nfs_nfsdstate.c revision 1.2.6.2
1 1.2.6.2 yamt /* $NetBSD: nfs_nfsdstate.c,v 1.2.6.2 2014/05/22 11:41:01 yamt Exp $ */ 2 1.2.6.2 yamt /*- 3 1.2.6.2 yamt * Copyright (c) 2009 Rick Macklem, University of Guelph 4 1.2.6.2 yamt * All rights reserved. 5 1.2.6.2 yamt * 6 1.2.6.2 yamt * Redistribution and use in source and binary forms, with or without 7 1.2.6.2 yamt * modification, are permitted provided that the following conditions 8 1.2.6.2 yamt * are met: 9 1.2.6.2 yamt * 1. Redistributions of source code must retain the above copyright 10 1.2.6.2 yamt * notice, this list of conditions and the following disclaimer. 11 1.2.6.2 yamt * 2. Redistributions in binary form must reproduce the above copyright 12 1.2.6.2 yamt * notice, this list of conditions and the following disclaimer in the 13 1.2.6.2 yamt * documentation and/or other materials provided with the distribution. 14 1.2.6.2 yamt * 15 1.2.6.2 yamt * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 1.2.6.2 yamt * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 1.2.6.2 yamt * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 1.2.6.2 yamt * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 1.2.6.2 yamt * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 1.2.6.2 yamt * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 1.2.6.2 yamt * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 1.2.6.2 yamt * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 1.2.6.2 yamt * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 1.2.6.2 yamt * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 1.2.6.2 yamt * SUCH DAMAGE. 26 1.2.6.2 yamt * 27 1.2.6.2 yamt */ 28 1.2.6.2 yamt 29 1.2.6.2 yamt #include <sys/cdefs.h> 30 1.2.6.2 yamt /* __FBSDID("FreeBSD: head/sys/fs/nfsserver/nfs_nfsdstate.c 245909 2013-01-25 15:25:24Z jhb "); */ 31 1.2.6.2 yamt __RCSID("$NetBSD: nfs_nfsdstate.c,v 1.2.6.2 2014/05/22 11:41:01 yamt Exp $"); 32 1.2.6.2 yamt 33 1.2.6.2 yamt #ifndef APPLEKEXT 34 1.2.6.2 yamt #include <fs/nfs/nfsport.h> 35 1.2.6.2 yamt 36 1.2.6.2 yamt struct nfsrv_stablefirst nfsrv_stablefirst; 37 1.2.6.2 yamt int nfsrv_issuedelegs = 0; 38 1.2.6.2 yamt int nfsrv_dolocallocks = 0; 39 1.2.6.2 yamt struct nfsv4lock nfsv4rootfs_lock; 40 1.2.6.2 yamt 41 1.2.6.2 yamt extern int newnfs_numnfsd; 42 1.2.6.2 yamt extern struct nfsstats newnfsstats; 43 1.2.6.2 yamt extern int nfsrv_lease; 44 1.2.6.2 yamt extern struct timeval nfsboottime; 45 1.2.6.2 yamt extern u_int32_t newnfs_true, newnfs_false; 46 1.2.6.2 yamt NFSV4ROOTLOCKMUTEX; 47 1.2.6.2 yamt NFSSTATESPINLOCK; 48 1.2.6.2 yamt 49 1.2.6.2 yamt /* 50 1.2.6.2 yamt * Hash lists for nfs V4. 51 1.2.6.2 yamt * (Some would put them in the .h file, but I don't like declaring storage 52 1.2.6.2 yamt * in a .h) 53 1.2.6.2 yamt */ 54 1.2.6.2 yamt struct nfsclienthashhead nfsclienthash[NFSCLIENTHASHSIZE]; 55 1.2.6.2 yamt struct nfslockhashhead nfslockhash[NFSLOCKHASHSIZE]; 56 1.2.6.2 yamt #endif /* !APPLEKEXT */ 57 1.2.6.2 yamt 58 1.2.6.2 yamt static u_int32_t nfsrv_openpluslock = 0, nfsrv_delegatecnt = 0; 59 1.2.6.2 yamt static time_t nfsrvboottime; 60 1.2.6.2 yamt static int nfsrv_writedelegifpos = 1; 61 1.2.6.2 yamt static int nfsrv_returnoldstateid = 0, nfsrv_clients = 0; 62 1.2.6.2 yamt static int nfsrv_clienthighwater = NFSRV_CLIENTHIGHWATER; 63 1.2.6.2 yamt static int nfsrv_nogsscallback = 0; 64 1.2.6.2 yamt 65 1.2.6.2 yamt /* local functions */ 66 1.2.6.2 yamt static void nfsrv_dumpaclient(struct nfsclient *clp, 67 1.2.6.2 yamt struct nfsd_dumpclients *dumpp); 68 1.2.6.2 yamt static void nfsrv_freeopenowner(struct nfsstate *stp, int cansleep, 69 1.2.6.2 yamt NFSPROC_T *p); 70 1.2.6.2 yamt static int nfsrv_freeopen(struct nfsstate *stp, vnode_t vp, int cansleep, 71 1.2.6.2 yamt NFSPROC_T *p); 72 1.2.6.2 yamt static void nfsrv_freelockowner(struct nfsstate *stp, vnode_t vp, int cansleep, 73 1.2.6.2 yamt NFSPROC_T *p); 74 1.2.6.2 yamt static void nfsrv_freeallnfslocks(struct nfsstate *stp, vnode_t vp, 75 1.2.6.2 yamt int cansleep, NFSPROC_T *p); 76 1.2.6.2 yamt static void nfsrv_freenfslock(struct nfslock *lop); 77 1.2.6.2 yamt static void nfsrv_freenfslockfile(struct nfslockfile *lfp); 78 1.2.6.2 yamt static void nfsrv_freedeleg(struct nfsstate *); 79 1.2.6.2 yamt static int nfsrv_getstate(struct nfsclient *clp, nfsv4stateid_t *stateidp, 80 1.2.6.2 yamt u_int32_t flags, struct nfsstate **stpp); 81 1.2.6.2 yamt static void nfsrv_getowner(struct nfsstatehead *hp, struct nfsstate *new_stp, 82 1.2.6.2 yamt struct nfsstate **stpp); 83 1.2.6.2 yamt static int nfsrv_getlockfh(vnode_t vp, u_short flags, 84 1.2.6.2 yamt struct nfslockfile **new_lfpp, fhandle_t *nfhp, NFSPROC_T *p); 85 1.2.6.2 yamt static int nfsrv_getlockfile(u_short flags, struct nfslockfile **new_lfpp, 86 1.2.6.2 yamt struct nfslockfile **lfpp, fhandle_t *nfhp, int lockit); 87 1.2.6.2 yamt static void nfsrv_insertlock(struct nfslock *new_lop, 88 1.2.6.2 yamt struct nfslock *insert_lop, struct nfsstate *stp, struct nfslockfile *lfp); 89 1.2.6.2 yamt static void nfsrv_updatelock(struct nfsstate *stp, struct nfslock **new_lopp, 90 1.2.6.2 yamt struct nfslock **other_lopp, struct nfslockfile *lfp); 91 1.2.6.2 yamt static int nfsrv_getipnumber(u_char *cp); 92 1.2.6.2 yamt static int nfsrv_checkrestart(nfsquad_t clientid, u_int32_t flags, 93 1.2.6.2 yamt nfsv4stateid_t *stateidp, int specialid); 94 1.2.6.2 yamt static int nfsrv_checkgrace(u_int32_t flags); 95 1.2.6.2 yamt static int nfsrv_docallback(struct nfsclient *clp, int procnum, 96 1.2.6.2 yamt nfsv4stateid_t *stateidp, int trunc, fhandle_t *fhp, 97 1.2.6.2 yamt struct nfsvattr *nap, nfsattrbit_t *attrbitp, NFSPROC_T *p); 98 1.2.6.2 yamt static u_int32_t nfsrv_nextclientindex(void); 99 1.2.6.2 yamt static u_int32_t nfsrv_nextstateindex(struct nfsclient *clp); 100 1.2.6.2 yamt static void nfsrv_markstable(struct nfsclient *clp); 101 1.2.6.2 yamt static int nfsrv_checkstable(struct nfsclient *clp); 102 1.2.6.2 yamt static int nfsrv_clientconflict(struct nfsclient *clp, int *haslockp, struct 103 1.2.6.2 yamt vnode *vp, NFSPROC_T *p); 104 1.2.6.2 yamt static int nfsrv_delegconflict(struct nfsstate *stp, int *haslockp, 105 1.2.6.2 yamt NFSPROC_T *p, vnode_t vp); 106 1.2.6.2 yamt static int nfsrv_cleandeleg(vnode_t vp, struct nfslockfile *lfp, 107 1.2.6.2 yamt struct nfsclient *clp, int *haslockp, NFSPROC_T *p); 108 1.2.6.2 yamt static int nfsrv_notsamecredname(struct nfsrv_descript *nd, 109 1.2.6.2 yamt struct nfsclient *clp); 110 1.2.6.2 yamt static time_t nfsrv_leaseexpiry(void); 111 1.2.6.2 yamt static void nfsrv_delaydelegtimeout(struct nfsstate *stp); 112 1.2.6.2 yamt static int nfsrv_checkseqid(struct nfsrv_descript *nd, u_int32_t seqid, 113 1.2.6.2 yamt struct nfsstate *stp, struct nfsrvcache *op); 114 1.2.6.2 yamt static int nfsrv_nootherstate(struct nfsstate *stp); 115 1.2.6.2 yamt static int nfsrv_locallock(vnode_t vp, struct nfslockfile *lfp, int flags, 116 1.2.6.2 yamt uint64_t first, uint64_t end, struct nfslockconflict *cfp, NFSPROC_T *p); 117 1.2.6.2 yamt static void nfsrv_localunlock(vnode_t vp, struct nfslockfile *lfp, 118 1.2.6.2 yamt uint64_t init_first, uint64_t init_end, NFSPROC_T *p); 119 1.2.6.2 yamt static int nfsrv_dolocal(vnode_t vp, struct nfslockfile *lfp, int flags, 120 1.2.6.2 yamt int oldflags, uint64_t first, uint64_t end, struct nfslockconflict *cfp, 121 1.2.6.2 yamt NFSPROC_T *p); 122 1.2.6.2 yamt static void nfsrv_locallock_rollback(vnode_t vp, struct nfslockfile *lfp, 123 1.2.6.2 yamt NFSPROC_T *p); 124 1.2.6.2 yamt static void nfsrv_locallock_commit(struct nfslockfile *lfp, int flags, 125 1.2.6.2 yamt uint64_t first, uint64_t end); 126 1.2.6.2 yamt static void nfsrv_locklf(struct nfslockfile *lfp); 127 1.2.6.2 yamt static void nfsrv_unlocklf(struct nfslockfile *lfp); 128 1.2.6.2 yamt 129 1.2.6.2 yamt /* 130 1.2.6.2 yamt * Scan the client list for a match and either return the current one, 131 1.2.6.2 yamt * create a new entry or return an error. 132 1.2.6.2 yamt * If returning a non-error, the clp structure must either be linked into 133 1.2.6.2 yamt * the client list or free'd. 134 1.2.6.2 yamt */ 135 1.2.6.2 yamt APPLESTATIC int 136 1.2.6.2 yamt nfsrv_setclient(struct nfsrv_descript *nd, struct nfsclient **new_clpp, 137 1.2.6.2 yamt nfsquad_t *clientidp, nfsquad_t *confirmp, NFSPROC_T *p) 138 1.2.6.2 yamt { 139 1.2.6.2 yamt struct nfsclient *clp = NULL, *new_clp = *new_clpp; 140 1.2.6.2 yamt int i, error = 0; 141 1.2.6.2 yamt struct nfsstate *stp, *tstp; 142 1.2.6.2 yamt struct sockaddr_in *sad, *rad; 143 1.2.6.2 yamt int zapit = 0, gotit, hasstate = 0, igotlock; 144 1.2.6.2 yamt static u_int64_t confirm_index = 0; 145 1.2.6.2 yamt 146 1.2.6.2 yamt /* 147 1.2.6.2 yamt * Check for state resource limit exceeded. 148 1.2.6.2 yamt */ 149 1.2.6.2 yamt if (nfsrv_openpluslock > NFSRV_V4STATELIMIT) { 150 1.2.6.2 yamt error = NFSERR_RESOURCE; 151 1.2.6.2 yamt goto out; 152 1.2.6.2 yamt } 153 1.2.6.2 yamt 154 1.2.6.2 yamt if (nfsrv_issuedelegs == 0 || 155 1.2.6.2 yamt ((nd->nd_flag & ND_GSS) != 0 && nfsrv_nogsscallback != 0)) 156 1.2.6.2 yamt /* 157 1.2.6.2 yamt * Don't do callbacks when delegations are disabled or 158 1.2.6.2 yamt * for AUTH_GSS unless enabled via nfsrv_nogsscallback. 159 1.2.6.2 yamt * If establishing a callback connection is attempted 160 1.2.6.2 yamt * when a firewall is blocking the callback path, the 161 1.2.6.2 yamt * server may wait too long for the connect attempt to 162 1.2.6.2 yamt * succeed during the Open. Some clients, such as Linux, 163 1.2.6.2 yamt * may timeout and give up on the Open before the server 164 1.2.6.2 yamt * replies. Also, since AUTH_GSS callbacks are not 165 1.2.6.2 yamt * yet interoperability tested, they might cause the 166 1.2.6.2 yamt * server to crap out, if they get past the Init call to 167 1.2.6.2 yamt * the client. 168 1.2.6.2 yamt */ 169 1.2.6.2 yamt new_clp->lc_program = 0; 170 1.2.6.2 yamt 171 1.2.6.2 yamt /* Lock out other nfsd threads */ 172 1.2.6.2 yamt NFSLOCKV4ROOTMUTEX(); 173 1.2.6.2 yamt nfsv4_relref(&nfsv4rootfs_lock); 174 1.2.6.2 yamt do { 175 1.2.6.2 yamt igotlock = nfsv4_lock(&nfsv4rootfs_lock, 1, NULL, 176 1.2.6.2 yamt NFSV4ROOTLOCKMUTEXPTR, NULL); 177 1.2.6.2 yamt } while (!igotlock); 178 1.2.6.2 yamt NFSUNLOCKV4ROOTMUTEX(); 179 1.2.6.2 yamt 180 1.2.6.2 yamt /* 181 1.2.6.2 yamt * Search for a match in the client list. 182 1.2.6.2 yamt */ 183 1.2.6.2 yamt gotit = i = 0; 184 1.2.6.2 yamt while (i < NFSCLIENTHASHSIZE && !gotit) { 185 1.2.6.2 yamt LIST_FOREACH(clp, &nfsclienthash[i], lc_hash) { 186 1.2.6.2 yamt if (new_clp->lc_idlen == clp->lc_idlen && 187 1.2.6.2 yamt !NFSBCMP(new_clp->lc_id, clp->lc_id, clp->lc_idlen)) { 188 1.2.6.2 yamt gotit = 1; 189 1.2.6.2 yamt break; 190 1.2.6.2 yamt } 191 1.2.6.2 yamt } 192 1.2.6.2 yamt i++; 193 1.2.6.2 yamt } 194 1.2.6.2 yamt if (!gotit || 195 1.2.6.2 yamt (clp->lc_flags & (LCL_NEEDSCONFIRM | LCL_ADMINREVOKED))) { 196 1.2.6.2 yamt /* 197 1.2.6.2 yamt * Get rid of the old one. 198 1.2.6.2 yamt */ 199 1.2.6.2 yamt if (i != NFSCLIENTHASHSIZE) { 200 1.2.6.2 yamt LIST_REMOVE(clp, lc_hash); 201 1.2.6.2 yamt nfsrv_cleanclient(clp, p); 202 1.2.6.2 yamt nfsrv_freedeleglist(&clp->lc_deleg); 203 1.2.6.2 yamt nfsrv_freedeleglist(&clp->lc_olddeleg); 204 1.2.6.2 yamt zapit = 1; 205 1.2.6.2 yamt } 206 1.2.6.2 yamt /* 207 1.2.6.2 yamt * Add it after assigning a client id to it. 208 1.2.6.2 yamt */ 209 1.2.6.2 yamt new_clp->lc_flags |= LCL_NEEDSCONFIRM; 210 1.2.6.2 yamt confirmp->qval = new_clp->lc_confirm.qval = ++confirm_index; 211 1.2.6.2 yamt clientidp->lval[0] = new_clp->lc_clientid.lval[0] = 212 1.2.6.2 yamt (u_int32_t)nfsrvboottime; 213 1.2.6.2 yamt clientidp->lval[1] = new_clp->lc_clientid.lval[1] = 214 1.2.6.2 yamt nfsrv_nextclientindex(); 215 1.2.6.2 yamt new_clp->lc_stateindex = 0; 216 1.2.6.2 yamt new_clp->lc_statemaxindex = 0; 217 1.2.6.2 yamt new_clp->lc_cbref = 0; 218 1.2.6.2 yamt new_clp->lc_expiry = nfsrv_leaseexpiry(); 219 1.2.6.2 yamt LIST_INIT(&new_clp->lc_open); 220 1.2.6.2 yamt LIST_INIT(&new_clp->lc_deleg); 221 1.2.6.2 yamt LIST_INIT(&new_clp->lc_olddeleg); 222 1.2.6.2 yamt for (i = 0; i < NFSSTATEHASHSIZE; i++) 223 1.2.6.2 yamt LIST_INIT(&new_clp->lc_stateid[i]); 224 1.2.6.2 yamt LIST_INSERT_HEAD(NFSCLIENTHASH(new_clp->lc_clientid), new_clp, 225 1.2.6.2 yamt lc_hash); 226 1.2.6.2 yamt newnfsstats.srvclients++; 227 1.2.6.2 yamt nfsrv_openpluslock++; 228 1.2.6.2 yamt nfsrv_clients++; 229 1.2.6.2 yamt NFSLOCKV4ROOTMUTEX(); 230 1.2.6.2 yamt nfsv4_unlock(&nfsv4rootfs_lock, 1); 231 1.2.6.2 yamt NFSUNLOCKV4ROOTMUTEX(); 232 1.2.6.2 yamt if (zapit) 233 1.2.6.2 yamt nfsrv_zapclient(clp, p); 234 1.2.6.2 yamt *new_clpp = NULL; 235 1.2.6.2 yamt goto out; 236 1.2.6.2 yamt } 237 1.2.6.2 yamt 238 1.2.6.2 yamt /* 239 1.2.6.2 yamt * Now, handle the cases where the id is already issued. 240 1.2.6.2 yamt */ 241 1.2.6.2 yamt if (nfsrv_notsamecredname(nd, clp)) { 242 1.2.6.2 yamt /* 243 1.2.6.2 yamt * Check to see if there is expired state that should go away. 244 1.2.6.2 yamt */ 245 1.2.6.2 yamt if (clp->lc_expiry < NFSD_MONOSEC && 246 1.2.6.2 yamt (!LIST_EMPTY(&clp->lc_open) || !LIST_EMPTY(&clp->lc_deleg))) { 247 1.2.6.2 yamt nfsrv_cleanclient(clp, p); 248 1.2.6.2 yamt nfsrv_freedeleglist(&clp->lc_deleg); 249 1.2.6.2 yamt } 250 1.2.6.2 yamt 251 1.2.6.2 yamt /* 252 1.2.6.2 yamt * If there is outstanding state, then reply NFSERR_CLIDINUSE per 253 1.2.6.2 yamt * RFC3530 Sec. 8.1.2 last para. 254 1.2.6.2 yamt */ 255 1.2.6.2 yamt if (!LIST_EMPTY(&clp->lc_deleg)) { 256 1.2.6.2 yamt hasstate = 1; 257 1.2.6.2 yamt } else if (LIST_EMPTY(&clp->lc_open)) { 258 1.2.6.2 yamt hasstate = 0; 259 1.2.6.2 yamt } else { 260 1.2.6.2 yamt hasstate = 0; 261 1.2.6.2 yamt /* Look for an Open on the OpenOwner */ 262 1.2.6.2 yamt LIST_FOREACH(stp, &clp->lc_open, ls_list) { 263 1.2.6.2 yamt if (!LIST_EMPTY(&stp->ls_open)) { 264 1.2.6.2 yamt hasstate = 1; 265 1.2.6.2 yamt break; 266 1.2.6.2 yamt } 267 1.2.6.2 yamt } 268 1.2.6.2 yamt } 269 1.2.6.2 yamt if (hasstate) { 270 1.2.6.2 yamt /* 271 1.2.6.2 yamt * If the uid doesn't match, return NFSERR_CLIDINUSE after 272 1.2.6.2 yamt * filling out the correct ipaddr and portnum. 273 1.2.6.2 yamt */ 274 1.2.6.2 yamt sad = NFSSOCKADDR(new_clp->lc_req.nr_nam, struct sockaddr_in *); 275 1.2.6.2 yamt rad = NFSSOCKADDR(clp->lc_req.nr_nam, struct sockaddr_in *); 276 1.2.6.2 yamt sad->sin_addr.s_addr = rad->sin_addr.s_addr; 277 1.2.6.2 yamt sad->sin_port = rad->sin_port; 278 1.2.6.2 yamt NFSLOCKV4ROOTMUTEX(); 279 1.2.6.2 yamt nfsv4_unlock(&nfsv4rootfs_lock, 1); 280 1.2.6.2 yamt NFSUNLOCKV4ROOTMUTEX(); 281 1.2.6.2 yamt error = NFSERR_CLIDINUSE; 282 1.2.6.2 yamt goto out; 283 1.2.6.2 yamt } 284 1.2.6.2 yamt } 285 1.2.6.2 yamt 286 1.2.6.2 yamt if (NFSBCMP(new_clp->lc_verf, clp->lc_verf, NFSX_VERF)) { 287 1.2.6.2 yamt /* 288 1.2.6.2 yamt * If the verifier has changed, the client has rebooted 289 1.2.6.2 yamt * and a new client id is issued. The old state info 290 1.2.6.2 yamt * can be thrown away once the SETCLIENTID_CONFIRM occurs. 291 1.2.6.2 yamt */ 292 1.2.6.2 yamt LIST_REMOVE(clp, lc_hash); 293 1.2.6.2 yamt new_clp->lc_flags |= LCL_NEEDSCONFIRM; 294 1.2.6.2 yamt confirmp->qval = new_clp->lc_confirm.qval = ++confirm_index; 295 1.2.6.2 yamt clientidp->lval[0] = new_clp->lc_clientid.lval[0] = 296 1.2.6.2 yamt nfsrvboottime; 297 1.2.6.2 yamt clientidp->lval[1] = new_clp->lc_clientid.lval[1] = 298 1.2.6.2 yamt nfsrv_nextclientindex(); 299 1.2.6.2 yamt new_clp->lc_stateindex = 0; 300 1.2.6.2 yamt new_clp->lc_statemaxindex = 0; 301 1.2.6.2 yamt new_clp->lc_cbref = 0; 302 1.2.6.2 yamt new_clp->lc_expiry = nfsrv_leaseexpiry(); 303 1.2.6.2 yamt 304 1.2.6.2 yamt /* 305 1.2.6.2 yamt * Save the state until confirmed. 306 1.2.6.2 yamt */ 307 1.2.6.2 yamt LIST_NEWHEAD(&new_clp->lc_open, &clp->lc_open, ls_list); 308 1.2.6.2 yamt LIST_FOREACH(tstp, &new_clp->lc_open, ls_list) 309 1.2.6.2 yamt tstp->ls_clp = new_clp; 310 1.2.6.2 yamt LIST_NEWHEAD(&new_clp->lc_deleg, &clp->lc_deleg, ls_list); 311 1.2.6.2 yamt LIST_FOREACH(tstp, &new_clp->lc_deleg, ls_list) 312 1.2.6.2 yamt tstp->ls_clp = new_clp; 313 1.2.6.2 yamt LIST_NEWHEAD(&new_clp->lc_olddeleg, &clp->lc_olddeleg, 314 1.2.6.2 yamt ls_list); 315 1.2.6.2 yamt LIST_FOREACH(tstp, &new_clp->lc_olddeleg, ls_list) 316 1.2.6.2 yamt tstp->ls_clp = new_clp; 317 1.2.6.2 yamt for (i = 0; i < NFSSTATEHASHSIZE; i++) { 318 1.2.6.2 yamt LIST_NEWHEAD(&new_clp->lc_stateid[i], 319 1.2.6.2 yamt &clp->lc_stateid[i], ls_hash); 320 1.2.6.2 yamt LIST_FOREACH(tstp, &new_clp->lc_stateid[i], ls_hash) 321 1.2.6.2 yamt tstp->ls_clp = new_clp; 322 1.2.6.2 yamt } 323 1.2.6.2 yamt LIST_INSERT_HEAD(NFSCLIENTHASH(new_clp->lc_clientid), new_clp, 324 1.2.6.2 yamt lc_hash); 325 1.2.6.2 yamt newnfsstats.srvclients++; 326 1.2.6.2 yamt nfsrv_openpluslock++; 327 1.2.6.2 yamt nfsrv_clients++; 328 1.2.6.2 yamt NFSLOCKV4ROOTMUTEX(); 329 1.2.6.2 yamt nfsv4_unlock(&nfsv4rootfs_lock, 1); 330 1.2.6.2 yamt NFSUNLOCKV4ROOTMUTEX(); 331 1.2.6.2 yamt 332 1.2.6.2 yamt /* 333 1.2.6.2 yamt * Must wait until any outstanding callback on the old clp 334 1.2.6.2 yamt * completes. 335 1.2.6.2 yamt */ 336 1.2.6.2 yamt NFSLOCKSTATE(); 337 1.2.6.2 yamt while (clp->lc_cbref) { 338 1.2.6.2 yamt clp->lc_flags |= LCL_WAKEUPWANTED; 339 1.2.6.2 yamt (void)mtx_sleep(clp, NFSSTATEMUTEXPTR, PZERO - 1, 340 1.2.6.2 yamt "nfsd clp", 10 * hz); 341 1.2.6.2 yamt } 342 1.2.6.2 yamt NFSUNLOCKSTATE(); 343 1.2.6.2 yamt nfsrv_zapclient(clp, p); 344 1.2.6.2 yamt *new_clpp = NULL; 345 1.2.6.2 yamt goto out; 346 1.2.6.2 yamt } 347 1.2.6.2 yamt /* 348 1.2.6.2 yamt * id and verifier match, so update the net address info 349 1.2.6.2 yamt * and get rid of any existing callback authentication 350 1.2.6.2 yamt * handle, so a new one will be acquired. 351 1.2.6.2 yamt */ 352 1.2.6.2 yamt LIST_REMOVE(clp, lc_hash); 353 1.2.6.2 yamt new_clp->lc_flags |= (LCL_NEEDSCONFIRM | LCL_DONTCLEAN); 354 1.2.6.2 yamt new_clp->lc_expiry = nfsrv_leaseexpiry(); 355 1.2.6.2 yamt confirmp->qval = new_clp->lc_confirm.qval = ++confirm_index; 356 1.2.6.2 yamt clientidp->lval[0] = new_clp->lc_clientid.lval[0] = 357 1.2.6.2 yamt clp->lc_clientid.lval[0]; 358 1.2.6.2 yamt clientidp->lval[1] = new_clp->lc_clientid.lval[1] = 359 1.2.6.2 yamt clp->lc_clientid.lval[1]; 360 1.2.6.2 yamt new_clp->lc_delegtime = clp->lc_delegtime; 361 1.2.6.2 yamt new_clp->lc_stateindex = clp->lc_stateindex; 362 1.2.6.2 yamt new_clp->lc_statemaxindex = clp->lc_statemaxindex; 363 1.2.6.2 yamt new_clp->lc_cbref = 0; 364 1.2.6.2 yamt LIST_NEWHEAD(&new_clp->lc_open, &clp->lc_open, ls_list); 365 1.2.6.2 yamt LIST_FOREACH(tstp, &new_clp->lc_open, ls_list) 366 1.2.6.2 yamt tstp->ls_clp = new_clp; 367 1.2.6.2 yamt LIST_NEWHEAD(&new_clp->lc_deleg, &clp->lc_deleg, ls_list); 368 1.2.6.2 yamt LIST_FOREACH(tstp, &new_clp->lc_deleg, ls_list) 369 1.2.6.2 yamt tstp->ls_clp = new_clp; 370 1.2.6.2 yamt LIST_NEWHEAD(&new_clp->lc_olddeleg, &clp->lc_olddeleg, ls_list); 371 1.2.6.2 yamt LIST_FOREACH(tstp, &new_clp->lc_olddeleg, ls_list) 372 1.2.6.2 yamt tstp->ls_clp = new_clp; 373 1.2.6.2 yamt for (i = 0; i < NFSSTATEHASHSIZE; i++) { 374 1.2.6.2 yamt LIST_NEWHEAD(&new_clp->lc_stateid[i], &clp->lc_stateid[i], 375 1.2.6.2 yamt ls_hash); 376 1.2.6.2 yamt LIST_FOREACH(tstp, &new_clp->lc_stateid[i], ls_hash) 377 1.2.6.2 yamt tstp->ls_clp = new_clp; 378 1.2.6.2 yamt } 379 1.2.6.2 yamt LIST_INSERT_HEAD(NFSCLIENTHASH(new_clp->lc_clientid), new_clp, 380 1.2.6.2 yamt lc_hash); 381 1.2.6.2 yamt newnfsstats.srvclients++; 382 1.2.6.2 yamt nfsrv_openpluslock++; 383 1.2.6.2 yamt nfsrv_clients++; 384 1.2.6.2 yamt NFSLOCKV4ROOTMUTEX(); 385 1.2.6.2 yamt nfsv4_unlock(&nfsv4rootfs_lock, 1); 386 1.2.6.2 yamt NFSUNLOCKV4ROOTMUTEX(); 387 1.2.6.2 yamt 388 1.2.6.2 yamt /* 389 1.2.6.2 yamt * Must wait until any outstanding callback on the old clp 390 1.2.6.2 yamt * completes. 391 1.2.6.2 yamt */ 392 1.2.6.2 yamt NFSLOCKSTATE(); 393 1.2.6.2 yamt while (clp->lc_cbref) { 394 1.2.6.2 yamt clp->lc_flags |= LCL_WAKEUPWANTED; 395 1.2.6.2 yamt (void)mtx_sleep(clp, NFSSTATEMUTEXPTR, PZERO - 1, "nfsd clp", 396 1.2.6.2 yamt 10 * hz); 397 1.2.6.2 yamt } 398 1.2.6.2 yamt NFSUNLOCKSTATE(); 399 1.2.6.2 yamt nfsrv_zapclient(clp, p); 400 1.2.6.2 yamt *new_clpp = NULL; 401 1.2.6.2 yamt 402 1.2.6.2 yamt out: 403 1.2.6.2 yamt NFSEXITCODE2(error, nd); 404 1.2.6.2 yamt return (error); 405 1.2.6.2 yamt } 406 1.2.6.2 yamt 407 1.2.6.2 yamt /* 408 1.2.6.2 yamt * Check to see if the client id exists and optionally confirm it. 409 1.2.6.2 yamt */ 410 1.2.6.2 yamt APPLESTATIC int 411 1.2.6.2 yamt nfsrv_getclient(nfsquad_t clientid, int opflags, struct nfsclient **clpp, 412 1.2.6.2 yamt nfsquad_t confirm, struct nfsrv_descript *nd, NFSPROC_T *p) 413 1.2.6.2 yamt { 414 1.2.6.2 yamt struct nfsclient *clp; 415 1.2.6.2 yamt struct nfsstate *stp; 416 1.2.6.2 yamt int i; 417 1.2.6.2 yamt struct nfsclienthashhead *hp; 418 1.2.6.2 yamt int error = 0, igotlock, doneok; 419 1.2.6.2 yamt 420 1.2.6.2 yamt if (clpp) 421 1.2.6.2 yamt *clpp = NULL; 422 1.2.6.2 yamt if (nfsrvboottime != clientid.lval[0]) { 423 1.2.6.2 yamt error = NFSERR_STALECLIENTID; 424 1.2.6.2 yamt goto out; 425 1.2.6.2 yamt } 426 1.2.6.2 yamt 427 1.2.6.2 yamt /* 428 1.2.6.2 yamt * If called with opflags == CLOPS_RENEW, the State Lock is 429 1.2.6.2 yamt * already held. Otherwise, we need to get either that or, 430 1.2.6.2 yamt * for the case of Confirm, lock out the nfsd threads. 431 1.2.6.2 yamt */ 432 1.2.6.2 yamt if (opflags & CLOPS_CONFIRM) { 433 1.2.6.2 yamt NFSLOCKV4ROOTMUTEX(); 434 1.2.6.2 yamt nfsv4_relref(&nfsv4rootfs_lock); 435 1.2.6.2 yamt do { 436 1.2.6.2 yamt igotlock = nfsv4_lock(&nfsv4rootfs_lock, 1, NULL, 437 1.2.6.2 yamt NFSV4ROOTLOCKMUTEXPTR, NULL); 438 1.2.6.2 yamt } while (!igotlock); 439 1.2.6.2 yamt NFSUNLOCKV4ROOTMUTEX(); 440 1.2.6.2 yamt } else if (opflags != CLOPS_RENEW) { 441 1.2.6.2 yamt NFSLOCKSTATE(); 442 1.2.6.2 yamt } 443 1.2.6.2 yamt 444 1.2.6.2 yamt hp = NFSCLIENTHASH(clientid); 445 1.2.6.2 yamt LIST_FOREACH(clp, hp, lc_hash) { 446 1.2.6.2 yamt if (clp->lc_clientid.lval[1] == clientid.lval[1]) 447 1.2.6.2 yamt break; 448 1.2.6.2 yamt } 449 1.2.6.2 yamt if (clp == NULL) { 450 1.2.6.2 yamt if (opflags & CLOPS_CONFIRM) 451 1.2.6.2 yamt error = NFSERR_STALECLIENTID; 452 1.2.6.2 yamt else 453 1.2.6.2 yamt error = NFSERR_EXPIRED; 454 1.2.6.2 yamt } else if (clp->lc_flags & LCL_ADMINREVOKED) { 455 1.2.6.2 yamt /* 456 1.2.6.2 yamt * If marked admin revoked, just return the error. 457 1.2.6.2 yamt */ 458 1.2.6.2 yamt error = NFSERR_ADMINREVOKED; 459 1.2.6.2 yamt } 460 1.2.6.2 yamt if (error) { 461 1.2.6.2 yamt if (opflags & CLOPS_CONFIRM) { 462 1.2.6.2 yamt NFSLOCKV4ROOTMUTEX(); 463 1.2.6.2 yamt nfsv4_unlock(&nfsv4rootfs_lock, 1); 464 1.2.6.2 yamt NFSUNLOCKV4ROOTMUTEX(); 465 1.2.6.2 yamt } else if (opflags != CLOPS_RENEW) { 466 1.2.6.2 yamt NFSUNLOCKSTATE(); 467 1.2.6.2 yamt } 468 1.2.6.2 yamt goto out; 469 1.2.6.2 yamt } 470 1.2.6.2 yamt 471 1.2.6.2 yamt /* 472 1.2.6.2 yamt * Perform any operations specified by the opflags. 473 1.2.6.2 yamt */ 474 1.2.6.2 yamt if (opflags & CLOPS_CONFIRM) { 475 1.2.6.2 yamt if (clp->lc_confirm.qval != confirm.qval) 476 1.2.6.2 yamt error = NFSERR_STALECLIENTID; 477 1.2.6.2 yamt else if (nfsrv_notsamecredname(nd, clp)) 478 1.2.6.2 yamt error = NFSERR_CLIDINUSE; 479 1.2.6.2 yamt 480 1.2.6.2 yamt if (!error) { 481 1.2.6.2 yamt if ((clp->lc_flags & (LCL_NEEDSCONFIRM | LCL_DONTCLEAN)) == 482 1.2.6.2 yamt LCL_NEEDSCONFIRM) { 483 1.2.6.2 yamt /* 484 1.2.6.2 yamt * Hang onto the delegations (as old delegations) 485 1.2.6.2 yamt * for an Open with CLAIM_DELEGATE_PREV unless in 486 1.2.6.2 yamt * grace, but get rid of the rest of the state. 487 1.2.6.2 yamt */ 488 1.2.6.2 yamt nfsrv_cleanclient(clp, p); 489 1.2.6.2 yamt nfsrv_freedeleglist(&clp->lc_olddeleg); 490 1.2.6.2 yamt if (nfsrv_checkgrace(0)) { 491 1.2.6.2 yamt /* In grace, so just delete delegations */ 492 1.2.6.2 yamt nfsrv_freedeleglist(&clp->lc_deleg); 493 1.2.6.2 yamt } else { 494 1.2.6.2 yamt LIST_FOREACH(stp, &clp->lc_deleg, ls_list) 495 1.2.6.2 yamt stp->ls_flags |= NFSLCK_OLDDELEG; 496 1.2.6.2 yamt clp->lc_delegtime = NFSD_MONOSEC + 497 1.2.6.2 yamt nfsrv_lease + NFSRV_LEASEDELTA; 498 1.2.6.2 yamt LIST_NEWHEAD(&clp->lc_olddeleg, &clp->lc_deleg, 499 1.2.6.2 yamt ls_list); 500 1.2.6.2 yamt } 501 1.2.6.2 yamt } 502 1.2.6.2 yamt clp->lc_flags &= ~(LCL_NEEDSCONFIRM | LCL_DONTCLEAN); 503 1.2.6.2 yamt if (clp->lc_program) 504 1.2.6.2 yamt clp->lc_flags |= LCL_NEEDSCBNULL; 505 1.2.6.2 yamt } 506 1.2.6.2 yamt } else if (clp->lc_flags & LCL_NEEDSCONFIRM) { 507 1.2.6.2 yamt error = NFSERR_EXPIRED; 508 1.2.6.2 yamt } 509 1.2.6.2 yamt 510 1.2.6.2 yamt /* 511 1.2.6.2 yamt * If called by the Renew Op, we must check the principal. 512 1.2.6.2 yamt */ 513 1.2.6.2 yamt if (!error && (opflags & CLOPS_RENEWOP)) { 514 1.2.6.2 yamt if (nfsrv_notsamecredname(nd, clp)) { 515 1.2.6.2 yamt doneok = 0; 516 1.2.6.2 yamt for (i = 0; i < NFSSTATEHASHSIZE && doneok == 0; i++) { 517 1.2.6.2 yamt LIST_FOREACH(stp, &clp->lc_stateid[i], ls_hash) { 518 1.2.6.2 yamt if ((stp->ls_flags & NFSLCK_OPEN) && 519 1.2.6.2 yamt stp->ls_uid == nd->nd_cred->cr_uid) { 520 1.2.6.2 yamt doneok = 1; 521 1.2.6.2 yamt break; 522 1.2.6.2 yamt } 523 1.2.6.2 yamt } 524 1.2.6.2 yamt } 525 1.2.6.2 yamt if (!doneok) 526 1.2.6.2 yamt error = NFSERR_ACCES; 527 1.2.6.2 yamt } 528 1.2.6.2 yamt if (!error && (clp->lc_flags & LCL_CBDOWN)) 529 1.2.6.2 yamt error = NFSERR_CBPATHDOWN; 530 1.2.6.2 yamt } 531 1.2.6.2 yamt if ((!error || error == NFSERR_CBPATHDOWN) && 532 1.2.6.2 yamt (opflags & CLOPS_RENEW)) { 533 1.2.6.2 yamt clp->lc_expiry = nfsrv_leaseexpiry(); 534 1.2.6.2 yamt } 535 1.2.6.2 yamt if (opflags & CLOPS_CONFIRM) { 536 1.2.6.2 yamt NFSLOCKV4ROOTMUTEX(); 537 1.2.6.2 yamt nfsv4_unlock(&nfsv4rootfs_lock, 1); 538 1.2.6.2 yamt NFSUNLOCKV4ROOTMUTEX(); 539 1.2.6.2 yamt } else if (opflags != CLOPS_RENEW) { 540 1.2.6.2 yamt NFSUNLOCKSTATE(); 541 1.2.6.2 yamt } 542 1.2.6.2 yamt if (clpp) 543 1.2.6.2 yamt *clpp = clp; 544 1.2.6.2 yamt 545 1.2.6.2 yamt out: 546 1.2.6.2 yamt NFSEXITCODE2(error, nd); 547 1.2.6.2 yamt return (error); 548 1.2.6.2 yamt } 549 1.2.6.2 yamt 550 1.2.6.2 yamt /* 551 1.2.6.2 yamt * Called from the new nfssvc syscall to admin revoke a clientid. 552 1.2.6.2 yamt * Returns 0 for success, error otherwise. 553 1.2.6.2 yamt */ 554 1.2.6.2 yamt APPLESTATIC int 555 1.2.6.2 yamt nfsrv_adminrevoke(struct nfsd_clid *revokep, NFSPROC_T *p) 556 1.2.6.2 yamt { 557 1.2.6.2 yamt struct nfsclient *clp = NULL; 558 1.2.6.2 yamt int i, error = 0; 559 1.2.6.2 yamt int gotit, igotlock; 560 1.2.6.2 yamt 561 1.2.6.2 yamt /* 562 1.2.6.2 yamt * First, lock out the nfsd so that state won't change while the 563 1.2.6.2 yamt * revocation record is being written to the stable storage restart 564 1.2.6.2 yamt * file. 565 1.2.6.2 yamt */ 566 1.2.6.2 yamt NFSLOCKV4ROOTMUTEX(); 567 1.2.6.2 yamt do { 568 1.2.6.2 yamt igotlock = nfsv4_lock(&nfsv4rootfs_lock, 1, NULL, 569 1.2.6.2 yamt NFSV4ROOTLOCKMUTEXPTR, NULL); 570 1.2.6.2 yamt } while (!igotlock); 571 1.2.6.2 yamt NFSUNLOCKV4ROOTMUTEX(); 572 1.2.6.2 yamt 573 1.2.6.2 yamt /* 574 1.2.6.2 yamt * Search for a match in the client list. 575 1.2.6.2 yamt */ 576 1.2.6.2 yamt gotit = i = 0; 577 1.2.6.2 yamt while (i < NFSCLIENTHASHSIZE && !gotit) { 578 1.2.6.2 yamt LIST_FOREACH(clp, &nfsclienthash[i], lc_hash) { 579 1.2.6.2 yamt if (revokep->nclid_idlen == clp->lc_idlen && 580 1.2.6.2 yamt !NFSBCMP(revokep->nclid_id, clp->lc_id, clp->lc_idlen)) { 581 1.2.6.2 yamt gotit = 1; 582 1.2.6.2 yamt break; 583 1.2.6.2 yamt } 584 1.2.6.2 yamt } 585 1.2.6.2 yamt i++; 586 1.2.6.2 yamt } 587 1.2.6.2 yamt if (!gotit) { 588 1.2.6.2 yamt NFSLOCKV4ROOTMUTEX(); 589 1.2.6.2 yamt nfsv4_unlock(&nfsv4rootfs_lock, 0); 590 1.2.6.2 yamt NFSUNLOCKV4ROOTMUTEX(); 591 1.2.6.2 yamt error = EPERM; 592 1.2.6.2 yamt goto out; 593 1.2.6.2 yamt } 594 1.2.6.2 yamt 595 1.2.6.2 yamt /* 596 1.2.6.2 yamt * Now, write out the revocation record 597 1.2.6.2 yamt */ 598 1.2.6.2 yamt nfsrv_writestable(clp->lc_id, clp->lc_idlen, NFSNST_REVOKE, p); 599 1.2.6.2 yamt nfsrv_backupstable(); 600 1.2.6.2 yamt 601 1.2.6.2 yamt /* 602 1.2.6.2 yamt * and clear out the state, marking the clientid revoked. 603 1.2.6.2 yamt */ 604 1.2.6.2 yamt clp->lc_flags &= ~LCL_CALLBACKSON; 605 1.2.6.2 yamt clp->lc_flags |= LCL_ADMINREVOKED; 606 1.2.6.2 yamt nfsrv_cleanclient(clp, p); 607 1.2.6.2 yamt nfsrv_freedeleglist(&clp->lc_deleg); 608 1.2.6.2 yamt nfsrv_freedeleglist(&clp->lc_olddeleg); 609 1.2.6.2 yamt NFSLOCKV4ROOTMUTEX(); 610 1.2.6.2 yamt nfsv4_unlock(&nfsv4rootfs_lock, 0); 611 1.2.6.2 yamt NFSUNLOCKV4ROOTMUTEX(); 612 1.2.6.2 yamt 613 1.2.6.2 yamt out: 614 1.2.6.2 yamt NFSEXITCODE(error); 615 1.2.6.2 yamt return (error); 616 1.2.6.2 yamt } 617 1.2.6.2 yamt 618 1.2.6.2 yamt /* 619 1.2.6.2 yamt * Dump out stats for all clients. Called from nfssvc(2), that is used 620 1.2.6.2 yamt * newnfsstats. 621 1.2.6.2 yamt */ 622 1.2.6.2 yamt APPLESTATIC void 623 1.2.6.2 yamt nfsrv_dumpclients(struct nfsd_dumpclients *dumpp, int maxcnt) 624 1.2.6.2 yamt { 625 1.2.6.2 yamt struct nfsclient *clp; 626 1.2.6.2 yamt int i = 0, cnt = 0; 627 1.2.6.2 yamt 628 1.2.6.2 yamt /* 629 1.2.6.2 yamt * First, get a reference on the nfsv4rootfs_lock so that an 630 1.2.6.2 yamt * exclusive lock cannot be acquired while dumping the clients. 631 1.2.6.2 yamt */ 632 1.2.6.2 yamt NFSLOCKV4ROOTMUTEX(); 633 1.2.6.2 yamt nfsv4_getref(&nfsv4rootfs_lock, NULL, NFSV4ROOTLOCKMUTEXPTR, NULL); 634 1.2.6.2 yamt NFSUNLOCKV4ROOTMUTEX(); 635 1.2.6.2 yamt NFSLOCKSTATE(); 636 1.2.6.2 yamt /* 637 1.2.6.2 yamt * Rattle through the client lists until done. 638 1.2.6.2 yamt */ 639 1.2.6.2 yamt while (i < NFSCLIENTHASHSIZE && cnt < maxcnt) { 640 1.2.6.2 yamt clp = LIST_FIRST(&nfsclienthash[i]); 641 1.2.6.2 yamt while (clp != NULL && cnt < maxcnt) { 642 1.2.6.2 yamt nfsrv_dumpaclient(clp, &dumpp[cnt]); 643 1.2.6.2 yamt cnt++; 644 1.2.6.2 yamt clp = LIST_NEXT(clp, lc_hash); 645 1.2.6.2 yamt } 646 1.2.6.2 yamt i++; 647 1.2.6.2 yamt } 648 1.2.6.2 yamt if (cnt < maxcnt) 649 1.2.6.2 yamt dumpp[cnt].ndcl_clid.nclid_idlen = 0; 650 1.2.6.2 yamt NFSUNLOCKSTATE(); 651 1.2.6.2 yamt NFSLOCKV4ROOTMUTEX(); 652 1.2.6.2 yamt nfsv4_relref(&nfsv4rootfs_lock); 653 1.2.6.2 yamt NFSUNLOCKV4ROOTMUTEX(); 654 1.2.6.2 yamt } 655 1.2.6.2 yamt 656 1.2.6.2 yamt /* 657 1.2.6.2 yamt * Dump stats for a client. Must be called with the NFSSTATELOCK and spl'd. 658 1.2.6.2 yamt */ 659 1.2.6.2 yamt static void 660 1.2.6.2 yamt nfsrv_dumpaclient(struct nfsclient *clp, struct nfsd_dumpclients *dumpp) 661 1.2.6.2 yamt { 662 1.2.6.2 yamt struct nfsstate *stp, *openstp, *lckownstp; 663 1.2.6.2 yamt struct nfslock *lop; 664 1.2.6.2 yamt struct sockaddr *sad; 665 1.2.6.2 yamt struct sockaddr_in *rad; 666 1.2.6.2 yamt struct sockaddr_in6 *rad6; 667 1.2.6.2 yamt 668 1.2.6.2 yamt dumpp->ndcl_nopenowners = dumpp->ndcl_nlockowners = 0; 669 1.2.6.2 yamt dumpp->ndcl_nopens = dumpp->ndcl_nlocks = 0; 670 1.2.6.2 yamt dumpp->ndcl_ndelegs = dumpp->ndcl_nolddelegs = 0; 671 1.2.6.2 yamt dumpp->ndcl_flags = clp->lc_flags; 672 1.2.6.2 yamt dumpp->ndcl_clid.nclid_idlen = clp->lc_idlen; 673 1.2.6.2 yamt NFSBCOPY(clp->lc_id, dumpp->ndcl_clid.nclid_id, clp->lc_idlen); 674 1.2.6.2 yamt sad = NFSSOCKADDR(clp->lc_req.nr_nam, struct sockaddr *); 675 1.2.6.2 yamt dumpp->ndcl_addrfam = sad->sa_family; 676 1.2.6.2 yamt if (sad->sa_family == AF_INET) { 677 1.2.6.2 yamt rad = (struct sockaddr_in *)sad; 678 1.2.6.2 yamt dumpp->ndcl_cbaddr.sin_addr = rad->sin_addr; 679 1.2.6.2 yamt } else { 680 1.2.6.2 yamt rad6 = (struct sockaddr_in6 *)sad; 681 1.2.6.2 yamt dumpp->ndcl_cbaddr.sin6_addr = rad6->sin6_addr; 682 1.2.6.2 yamt } 683 1.2.6.2 yamt 684 1.2.6.2 yamt /* 685 1.2.6.2 yamt * Now, scan the state lists and total up the opens and locks. 686 1.2.6.2 yamt */ 687 1.2.6.2 yamt LIST_FOREACH(stp, &clp->lc_open, ls_list) { 688 1.2.6.2 yamt dumpp->ndcl_nopenowners++; 689 1.2.6.2 yamt LIST_FOREACH(openstp, &stp->ls_open, ls_list) { 690 1.2.6.2 yamt dumpp->ndcl_nopens++; 691 1.2.6.2 yamt LIST_FOREACH(lckownstp, &openstp->ls_open, ls_list) { 692 1.2.6.2 yamt dumpp->ndcl_nlockowners++; 693 1.2.6.2 yamt LIST_FOREACH(lop, &lckownstp->ls_lock, lo_lckowner) { 694 1.2.6.2 yamt dumpp->ndcl_nlocks++; 695 1.2.6.2 yamt } 696 1.2.6.2 yamt } 697 1.2.6.2 yamt } 698 1.2.6.2 yamt } 699 1.2.6.2 yamt 700 1.2.6.2 yamt /* 701 1.2.6.2 yamt * and the delegation lists. 702 1.2.6.2 yamt */ 703 1.2.6.2 yamt LIST_FOREACH(stp, &clp->lc_deleg, ls_list) { 704 1.2.6.2 yamt dumpp->ndcl_ndelegs++; 705 1.2.6.2 yamt } 706 1.2.6.2 yamt LIST_FOREACH(stp, &clp->lc_olddeleg, ls_list) { 707 1.2.6.2 yamt dumpp->ndcl_nolddelegs++; 708 1.2.6.2 yamt } 709 1.2.6.2 yamt } 710 1.2.6.2 yamt 711 1.2.6.2 yamt /* 712 1.2.6.2 yamt * Dump out lock stats for a file. 713 1.2.6.2 yamt */ 714 1.2.6.2 yamt APPLESTATIC void 715 1.2.6.2 yamt nfsrv_dumplocks(vnode_t vp, struct nfsd_dumplocks *ldumpp, int maxcnt, 716 1.2.6.2 yamt NFSPROC_T *p) 717 1.2.6.2 yamt { 718 1.2.6.2 yamt struct nfsstate *stp; 719 1.2.6.2 yamt struct nfslock *lop; 720 1.2.6.2 yamt int cnt = 0; 721 1.2.6.2 yamt struct nfslockfile *lfp; 722 1.2.6.2 yamt struct sockaddr *sad; 723 1.2.6.2 yamt struct sockaddr_in *rad; 724 1.2.6.2 yamt struct sockaddr_in6 *rad6; 725 1.2.6.2 yamt int ret; 726 1.2.6.2 yamt fhandle_t nfh; 727 1.2.6.2 yamt 728 1.2.6.2 yamt ret = nfsrv_getlockfh(vp, 0, NULL, &nfh, p); 729 1.2.6.2 yamt /* 730 1.2.6.2 yamt * First, get a reference on the nfsv4rootfs_lock so that an 731 1.2.6.2 yamt * exclusive lock on it cannot be acquired while dumping the locks. 732 1.2.6.2 yamt */ 733 1.2.6.2 yamt NFSLOCKV4ROOTMUTEX(); 734 1.2.6.2 yamt nfsv4_getref(&nfsv4rootfs_lock, NULL, NFSV4ROOTLOCKMUTEXPTR, NULL); 735 1.2.6.2 yamt NFSUNLOCKV4ROOTMUTEX(); 736 1.2.6.2 yamt NFSLOCKSTATE(); 737 1.2.6.2 yamt if (!ret) 738 1.2.6.2 yamt ret = nfsrv_getlockfile(0, NULL, &lfp, &nfh, 0); 739 1.2.6.2 yamt if (ret) { 740 1.2.6.2 yamt ldumpp[0].ndlck_clid.nclid_idlen = 0; 741 1.2.6.2 yamt NFSUNLOCKSTATE(); 742 1.2.6.2 yamt NFSLOCKV4ROOTMUTEX(); 743 1.2.6.2 yamt nfsv4_relref(&nfsv4rootfs_lock); 744 1.2.6.2 yamt NFSUNLOCKV4ROOTMUTEX(); 745 1.2.6.2 yamt return; 746 1.2.6.2 yamt } 747 1.2.6.2 yamt 748 1.2.6.2 yamt /* 749 1.2.6.2 yamt * For each open share on file, dump it out. 750 1.2.6.2 yamt */ 751 1.2.6.2 yamt stp = LIST_FIRST(&lfp->lf_open); 752 1.2.6.2 yamt while (stp != NULL && cnt < maxcnt) { 753 1.2.6.2 yamt ldumpp[cnt].ndlck_flags = stp->ls_flags; 754 1.2.6.2 yamt ldumpp[cnt].ndlck_stateid.seqid = stp->ls_stateid.seqid; 755 1.2.6.2 yamt ldumpp[cnt].ndlck_stateid.other[0] = stp->ls_stateid.other[0]; 756 1.2.6.2 yamt ldumpp[cnt].ndlck_stateid.other[1] = stp->ls_stateid.other[1]; 757 1.2.6.2 yamt ldumpp[cnt].ndlck_stateid.other[2] = stp->ls_stateid.other[2]; 758 1.2.6.2 yamt ldumpp[cnt].ndlck_owner.nclid_idlen = 759 1.2.6.2 yamt stp->ls_openowner->ls_ownerlen; 760 1.2.6.2 yamt NFSBCOPY(stp->ls_openowner->ls_owner, 761 1.2.6.2 yamt ldumpp[cnt].ndlck_owner.nclid_id, 762 1.2.6.2 yamt stp->ls_openowner->ls_ownerlen); 763 1.2.6.2 yamt ldumpp[cnt].ndlck_clid.nclid_idlen = stp->ls_clp->lc_idlen; 764 1.2.6.2 yamt NFSBCOPY(stp->ls_clp->lc_id, ldumpp[cnt].ndlck_clid.nclid_id, 765 1.2.6.2 yamt stp->ls_clp->lc_idlen); 766 1.2.6.2 yamt sad=NFSSOCKADDR(stp->ls_clp->lc_req.nr_nam, struct sockaddr *); 767 1.2.6.2 yamt ldumpp[cnt].ndlck_addrfam = sad->sa_family; 768 1.2.6.2 yamt if (sad->sa_family == AF_INET) { 769 1.2.6.2 yamt rad = (struct sockaddr_in *)sad; 770 1.2.6.2 yamt ldumpp[cnt].ndlck_cbaddr.sin_addr = rad->sin_addr; 771 1.2.6.2 yamt } else { 772 1.2.6.2 yamt rad6 = (struct sockaddr_in6 *)sad; 773 1.2.6.2 yamt ldumpp[cnt].ndlck_cbaddr.sin6_addr = rad6->sin6_addr; 774 1.2.6.2 yamt } 775 1.2.6.2 yamt stp = LIST_NEXT(stp, ls_file); 776 1.2.6.2 yamt cnt++; 777 1.2.6.2 yamt } 778 1.2.6.2 yamt 779 1.2.6.2 yamt /* 780 1.2.6.2 yamt * and all locks. 781 1.2.6.2 yamt */ 782 1.2.6.2 yamt lop = LIST_FIRST(&lfp->lf_lock); 783 1.2.6.2 yamt while (lop != NULL && cnt < maxcnt) { 784 1.2.6.2 yamt stp = lop->lo_stp; 785 1.2.6.2 yamt ldumpp[cnt].ndlck_flags = lop->lo_flags; 786 1.2.6.2 yamt ldumpp[cnt].ndlck_first = lop->lo_first; 787 1.2.6.2 yamt ldumpp[cnt].ndlck_end = lop->lo_end; 788 1.2.6.2 yamt ldumpp[cnt].ndlck_stateid.seqid = stp->ls_stateid.seqid; 789 1.2.6.2 yamt ldumpp[cnt].ndlck_stateid.other[0] = stp->ls_stateid.other[0]; 790 1.2.6.2 yamt ldumpp[cnt].ndlck_stateid.other[1] = stp->ls_stateid.other[1]; 791 1.2.6.2 yamt ldumpp[cnt].ndlck_stateid.other[2] = stp->ls_stateid.other[2]; 792 1.2.6.2 yamt ldumpp[cnt].ndlck_owner.nclid_idlen = stp->ls_ownerlen; 793 1.2.6.2 yamt NFSBCOPY(stp->ls_owner, ldumpp[cnt].ndlck_owner.nclid_id, 794 1.2.6.2 yamt stp->ls_ownerlen); 795 1.2.6.2 yamt ldumpp[cnt].ndlck_clid.nclid_idlen = stp->ls_clp->lc_idlen; 796 1.2.6.2 yamt NFSBCOPY(stp->ls_clp->lc_id, ldumpp[cnt].ndlck_clid.nclid_id, 797 1.2.6.2 yamt stp->ls_clp->lc_idlen); 798 1.2.6.2 yamt sad=NFSSOCKADDR(stp->ls_clp->lc_req.nr_nam, struct sockaddr *); 799 1.2.6.2 yamt ldumpp[cnt].ndlck_addrfam = sad->sa_family; 800 1.2.6.2 yamt if (sad->sa_family == AF_INET) { 801 1.2.6.2 yamt rad = (struct sockaddr_in *)sad; 802 1.2.6.2 yamt ldumpp[cnt].ndlck_cbaddr.sin_addr = rad->sin_addr; 803 1.2.6.2 yamt } else { 804 1.2.6.2 yamt rad6 = (struct sockaddr_in6 *)sad; 805 1.2.6.2 yamt ldumpp[cnt].ndlck_cbaddr.sin6_addr = rad6->sin6_addr; 806 1.2.6.2 yamt } 807 1.2.6.2 yamt lop = LIST_NEXT(lop, lo_lckfile); 808 1.2.6.2 yamt cnt++; 809 1.2.6.2 yamt } 810 1.2.6.2 yamt 811 1.2.6.2 yamt /* 812 1.2.6.2 yamt * and the delegations. 813 1.2.6.2 yamt */ 814 1.2.6.2 yamt stp = LIST_FIRST(&lfp->lf_deleg); 815 1.2.6.2 yamt while (stp != NULL && cnt < maxcnt) { 816 1.2.6.2 yamt ldumpp[cnt].ndlck_flags = stp->ls_flags; 817 1.2.6.2 yamt ldumpp[cnt].ndlck_stateid.seqid = stp->ls_stateid.seqid; 818 1.2.6.2 yamt ldumpp[cnt].ndlck_stateid.other[0] = stp->ls_stateid.other[0]; 819 1.2.6.2 yamt ldumpp[cnt].ndlck_stateid.other[1] = stp->ls_stateid.other[1]; 820 1.2.6.2 yamt ldumpp[cnt].ndlck_stateid.other[2] = stp->ls_stateid.other[2]; 821 1.2.6.2 yamt ldumpp[cnt].ndlck_owner.nclid_idlen = 0; 822 1.2.6.2 yamt ldumpp[cnt].ndlck_clid.nclid_idlen = stp->ls_clp->lc_idlen; 823 1.2.6.2 yamt NFSBCOPY(stp->ls_clp->lc_id, ldumpp[cnt].ndlck_clid.nclid_id, 824 1.2.6.2 yamt stp->ls_clp->lc_idlen); 825 1.2.6.2 yamt sad=NFSSOCKADDR(stp->ls_clp->lc_req.nr_nam, struct sockaddr *); 826 1.2.6.2 yamt ldumpp[cnt].ndlck_addrfam = sad->sa_family; 827 1.2.6.2 yamt if (sad->sa_family == AF_INET) { 828 1.2.6.2 yamt rad = (struct sockaddr_in *)sad; 829 1.2.6.2 yamt ldumpp[cnt].ndlck_cbaddr.sin_addr = rad->sin_addr; 830 1.2.6.2 yamt } else { 831 1.2.6.2 yamt rad6 = (struct sockaddr_in6 *)sad; 832 1.2.6.2 yamt ldumpp[cnt].ndlck_cbaddr.sin6_addr = rad6->sin6_addr; 833 1.2.6.2 yamt } 834 1.2.6.2 yamt stp = LIST_NEXT(stp, ls_file); 835 1.2.6.2 yamt cnt++; 836 1.2.6.2 yamt } 837 1.2.6.2 yamt 838 1.2.6.2 yamt /* 839 1.2.6.2 yamt * If list isn't full, mark end of list by setting the client name 840 1.2.6.2 yamt * to zero length. 841 1.2.6.2 yamt */ 842 1.2.6.2 yamt if (cnt < maxcnt) 843 1.2.6.2 yamt ldumpp[cnt].ndlck_clid.nclid_idlen = 0; 844 1.2.6.2 yamt NFSUNLOCKSTATE(); 845 1.2.6.2 yamt NFSLOCKV4ROOTMUTEX(); 846 1.2.6.2 yamt nfsv4_relref(&nfsv4rootfs_lock); 847 1.2.6.2 yamt NFSUNLOCKV4ROOTMUTEX(); 848 1.2.6.2 yamt } 849 1.2.6.2 yamt 850 1.2.6.2 yamt /* 851 1.2.6.2 yamt * Server timer routine. It can scan any linked list, so long 852 1.2.6.2 yamt * as it holds the spin/mutex lock and there is no exclusive lock on 853 1.2.6.2 yamt * nfsv4rootfs_lock. 854 1.2.6.2 yamt * (For OpenBSD, a kthread is ok. For FreeBSD, I think it is ok 855 1.2.6.2 yamt * to do this from a callout, since the spin locks work. For 856 1.2.6.2 yamt * Darwin, I'm not sure what will work correctly yet.) 857 1.2.6.2 yamt * Should be called once per second. 858 1.2.6.2 yamt */ 859 1.2.6.2 yamt APPLESTATIC void 860 1.2.6.2 yamt nfsrv_servertimer(void) 861 1.2.6.2 yamt { 862 1.2.6.2 yamt struct nfsclient *clp, *nclp; 863 1.2.6.2 yamt struct nfsstate *stp, *nstp; 864 1.2.6.2 yamt int got_ref, i; 865 1.2.6.2 yamt 866 1.2.6.2 yamt /* 867 1.2.6.2 yamt * Make sure nfsboottime is set. This is used by V3 as well 868 1.2.6.2 yamt * as V4. Note that nfsboottime is not nfsrvboottime, which is 869 1.2.6.2 yamt * only used by the V4 server for leases. 870 1.2.6.2 yamt */ 871 1.2.6.2 yamt if (nfsboottime.tv_sec == 0) 872 1.2.6.2 yamt NFSSETBOOTTIME(nfsboottime); 873 1.2.6.2 yamt 874 1.2.6.2 yamt /* 875 1.2.6.2 yamt * If server hasn't started yet, just return. 876 1.2.6.2 yamt */ 877 1.2.6.2 yamt NFSLOCKSTATE(); 878 1.2.6.2 yamt if (nfsrv_stablefirst.nsf_eograce == 0) { 879 1.2.6.2 yamt NFSUNLOCKSTATE(); 880 1.2.6.2 yamt return; 881 1.2.6.2 yamt } 882 1.2.6.2 yamt if (!(nfsrv_stablefirst.nsf_flags & NFSNSF_UPDATEDONE)) { 883 1.2.6.2 yamt if (!(nfsrv_stablefirst.nsf_flags & NFSNSF_GRACEOVER) && 884 1.2.6.2 yamt NFSD_MONOSEC > nfsrv_stablefirst.nsf_eograce) 885 1.2.6.2 yamt nfsrv_stablefirst.nsf_flags |= 886 1.2.6.2 yamt (NFSNSF_GRACEOVER | NFSNSF_NEEDLOCK); 887 1.2.6.2 yamt NFSUNLOCKSTATE(); 888 1.2.6.2 yamt return; 889 1.2.6.2 yamt } 890 1.2.6.2 yamt 891 1.2.6.2 yamt /* 892 1.2.6.2 yamt * Try and get a reference count on the nfsv4rootfs_lock so that 893 1.2.6.2 yamt * no nfsd thread can acquire an exclusive lock on it before this 894 1.2.6.2 yamt * call is done. If it is already exclusively locked, just return. 895 1.2.6.2 yamt */ 896 1.2.6.2 yamt NFSLOCKV4ROOTMUTEX(); 897 1.2.6.2 yamt got_ref = nfsv4_getref_nonblock(&nfsv4rootfs_lock); 898 1.2.6.2 yamt NFSUNLOCKV4ROOTMUTEX(); 899 1.2.6.2 yamt if (got_ref == 0) { 900 1.2.6.2 yamt NFSUNLOCKSTATE(); 901 1.2.6.2 yamt return; 902 1.2.6.2 yamt } 903 1.2.6.2 yamt 904 1.2.6.2 yamt /* 905 1.2.6.2 yamt * For each client... 906 1.2.6.2 yamt */ 907 1.2.6.2 yamt for (i = 0; i < NFSCLIENTHASHSIZE; i++) { 908 1.2.6.2 yamt clp = LIST_FIRST(&nfsclienthash[i]); 909 1.2.6.2 yamt while (clp != NULL) { 910 1.2.6.2 yamt nclp = LIST_NEXT(clp, lc_hash); 911 1.2.6.2 yamt if (!(clp->lc_flags & LCL_EXPIREIT)) { 912 1.2.6.2 yamt if (((clp->lc_expiry + NFSRV_STALELEASE) < NFSD_MONOSEC 913 1.2.6.2 yamt && ((LIST_EMPTY(&clp->lc_deleg) 914 1.2.6.2 yamt && LIST_EMPTY(&clp->lc_open)) || 915 1.2.6.2 yamt nfsrv_clients > nfsrv_clienthighwater)) || 916 1.2.6.2 yamt (clp->lc_expiry + NFSRV_MOULDYLEASE) < NFSD_MONOSEC || 917 1.2.6.2 yamt (clp->lc_expiry < NFSD_MONOSEC && 918 1.2.6.2 yamt (nfsrv_openpluslock * 10 / 9) > NFSRV_V4STATELIMIT)) { 919 1.2.6.2 yamt /* 920 1.2.6.2 yamt * Lease has expired several nfsrv_lease times ago: 921 1.2.6.2 yamt * PLUS 922 1.2.6.2 yamt * - no state is associated with it 923 1.2.6.2 yamt * OR 924 1.2.6.2 yamt * - above high water mark for number of clients 925 1.2.6.2 yamt * (nfsrv_clienthighwater should be large enough 926 1.2.6.2 yamt * that this only occurs when clients fail to 927 1.2.6.2 yamt * use the same nfs_client_id4.id. Maybe somewhat 928 1.2.6.2 yamt * higher that the maximum number of clients that 929 1.2.6.2 yamt * will mount this server?) 930 1.2.6.2 yamt * OR 931 1.2.6.2 yamt * Lease has expired a very long time ago 932 1.2.6.2 yamt * OR 933 1.2.6.2 yamt * Lease has expired PLUS the number of opens + locks 934 1.2.6.2 yamt * has exceeded 90% of capacity 935 1.2.6.2 yamt * 936 1.2.6.2 yamt * --> Mark for expiry. The actual expiry will be done 937 1.2.6.2 yamt * by an nfsd sometime soon. 938 1.2.6.2 yamt */ 939 1.2.6.2 yamt clp->lc_flags |= LCL_EXPIREIT; 940 1.2.6.2 yamt nfsrv_stablefirst.nsf_flags |= 941 1.2.6.2 yamt (NFSNSF_NEEDLOCK | NFSNSF_EXPIREDCLIENT); 942 1.2.6.2 yamt } else { 943 1.2.6.2 yamt /* 944 1.2.6.2 yamt * If there are no opens, increment no open tick cnt 945 1.2.6.2 yamt * If time exceeds NFSNOOPEN, mark it to be thrown away 946 1.2.6.2 yamt * otherwise, if there is an open, reset no open time 947 1.2.6.2 yamt * Hopefully, this will avoid excessive re-creation 948 1.2.6.2 yamt * of open owners and subsequent open confirms. 949 1.2.6.2 yamt */ 950 1.2.6.2 yamt stp = LIST_FIRST(&clp->lc_open); 951 1.2.6.2 yamt while (stp != NULL) { 952 1.2.6.2 yamt nstp = LIST_NEXT(stp, ls_list); 953 1.2.6.2 yamt if (LIST_EMPTY(&stp->ls_open)) { 954 1.2.6.2 yamt stp->ls_noopens++; 955 1.2.6.2 yamt if (stp->ls_noopens > NFSNOOPEN || 956 1.2.6.2 yamt (nfsrv_openpluslock * 2) > 957 1.2.6.2 yamt NFSRV_V4STATELIMIT) 958 1.2.6.2 yamt nfsrv_stablefirst.nsf_flags |= 959 1.2.6.2 yamt NFSNSF_NOOPENS; 960 1.2.6.2 yamt } else { 961 1.2.6.2 yamt stp->ls_noopens = 0; 962 1.2.6.2 yamt } 963 1.2.6.2 yamt stp = nstp; 964 1.2.6.2 yamt } 965 1.2.6.2 yamt } 966 1.2.6.2 yamt } 967 1.2.6.2 yamt clp = nclp; 968 1.2.6.2 yamt } 969 1.2.6.2 yamt } 970 1.2.6.2 yamt NFSUNLOCKSTATE(); 971 1.2.6.2 yamt NFSLOCKV4ROOTMUTEX(); 972 1.2.6.2 yamt nfsv4_relref(&nfsv4rootfs_lock); 973 1.2.6.2 yamt NFSUNLOCKV4ROOTMUTEX(); 974 1.2.6.2 yamt } 975 1.2.6.2 yamt 976 1.2.6.2 yamt /* 977 1.2.6.2 yamt * The following set of functions free up the various data structures. 978 1.2.6.2 yamt */ 979 1.2.6.2 yamt /* 980 1.2.6.2 yamt * Clear out all open/lock state related to this nfsclient. 981 1.2.6.2 yamt * Caller must hold an exclusive lock on nfsv4rootfs_lock, so that 982 1.2.6.2 yamt * there are no other active nfsd threads. 983 1.2.6.2 yamt */ 984 1.2.6.2 yamt APPLESTATIC void 985 1.2.6.2 yamt nfsrv_cleanclient(struct nfsclient *clp, NFSPROC_T *p) 986 1.2.6.2 yamt { 987 1.2.6.2 yamt struct nfsstate *stp, *nstp; 988 1.2.6.2 yamt 989 1.2.6.2 yamt LIST_FOREACH_SAFE(stp, &clp->lc_open, ls_list, nstp) 990 1.2.6.2 yamt nfsrv_freeopenowner(stp, 1, p); 991 1.2.6.2 yamt } 992 1.2.6.2 yamt 993 1.2.6.2 yamt /* 994 1.2.6.2 yamt * Free a client that has been cleaned. It should also already have been 995 1.2.6.2 yamt * removed from the lists. 996 1.2.6.2 yamt * (Just to be safe w.r.t. newnfs_disconnect(), call this function when 997 1.2.6.2 yamt * softclock interrupts are enabled.) 998 1.2.6.2 yamt */ 999 1.2.6.2 yamt APPLESTATIC void 1000 1.2.6.2 yamt nfsrv_zapclient(struct nfsclient *clp, NFSPROC_T *p) 1001 1.2.6.2 yamt { 1002 1.2.6.2 yamt 1003 1.2.6.2 yamt #ifdef notyet 1004 1.2.6.2 yamt if ((clp->lc_flags & (LCL_GSS | LCL_CALLBACKSON)) == 1005 1.2.6.2 yamt (LCL_GSS | LCL_CALLBACKSON) && 1006 1.2.6.2 yamt (clp->lc_hand.nfsh_flag & NFSG_COMPLETE) && 1007 1.2.6.2 yamt clp->lc_handlelen > 0) { 1008 1.2.6.2 yamt clp->lc_hand.nfsh_flag &= ~NFSG_COMPLETE; 1009 1.2.6.2 yamt clp->lc_hand.nfsh_flag |= NFSG_DESTROYED; 1010 1.2.6.2 yamt (void) nfsrv_docallback(clp, NFSV4PROC_CBNULL, 1011 1.2.6.2 yamt NULL, 0, NULL, NULL, NULL, p); 1012 1.2.6.2 yamt } 1013 1.2.6.2 yamt #endif 1014 1.2.6.2 yamt newnfs_disconnect(&clp->lc_req); 1015 1.2.6.2 yamt NFSSOCKADDRFREE(clp->lc_req.nr_nam); 1016 1.2.6.2 yamt NFSFREEMUTEX(&clp->lc_req.nr_mtx); 1017 1.2.6.2 yamt free((caddr_t)clp, M_NFSDCLIENT); 1018 1.2.6.2 yamt NFSLOCKSTATE(); 1019 1.2.6.2 yamt newnfsstats.srvclients--; 1020 1.2.6.2 yamt nfsrv_openpluslock--; 1021 1.2.6.2 yamt nfsrv_clients--; 1022 1.2.6.2 yamt NFSUNLOCKSTATE(); 1023 1.2.6.2 yamt } 1024 1.2.6.2 yamt 1025 1.2.6.2 yamt /* 1026 1.2.6.2 yamt * Free a list of delegation state structures. 1027 1.2.6.2 yamt * (This function will also free all nfslockfile structures that no 1028 1.2.6.2 yamt * longer have associated state.) 1029 1.2.6.2 yamt */ 1030 1.2.6.2 yamt APPLESTATIC void 1031 1.2.6.2 yamt nfsrv_freedeleglist(struct nfsstatehead *sthp) 1032 1.2.6.2 yamt { 1033 1.2.6.2 yamt struct nfsstate *stp, *nstp; 1034 1.2.6.2 yamt 1035 1.2.6.2 yamt LIST_FOREACH_SAFE(stp, sthp, ls_list, nstp) { 1036 1.2.6.2 yamt nfsrv_freedeleg(stp); 1037 1.2.6.2 yamt } 1038 1.2.6.2 yamt LIST_INIT(sthp); 1039 1.2.6.2 yamt } 1040 1.2.6.2 yamt 1041 1.2.6.2 yamt /* 1042 1.2.6.2 yamt * Free up a delegation. 1043 1.2.6.2 yamt */ 1044 1.2.6.2 yamt static void 1045 1.2.6.2 yamt nfsrv_freedeleg(struct nfsstate *stp) 1046 1.2.6.2 yamt { 1047 1.2.6.2 yamt struct nfslockfile *lfp; 1048 1.2.6.2 yamt 1049 1.2.6.2 yamt LIST_REMOVE(stp, ls_hash); 1050 1.2.6.2 yamt LIST_REMOVE(stp, ls_list); 1051 1.2.6.2 yamt LIST_REMOVE(stp, ls_file); 1052 1.2.6.2 yamt lfp = stp->ls_lfp; 1053 1.2.6.2 yamt if (LIST_EMPTY(&lfp->lf_open) && 1054 1.2.6.2 yamt LIST_EMPTY(&lfp->lf_lock) && LIST_EMPTY(&lfp->lf_deleg) && 1055 1.2.6.2 yamt LIST_EMPTY(&lfp->lf_locallock) && LIST_EMPTY(&lfp->lf_rollback) && 1056 1.2.6.2 yamt lfp->lf_usecount == 0 && 1057 1.2.6.2 yamt nfsv4_testlock(&lfp->lf_locallock_lck) == 0) 1058 1.2.6.2 yamt nfsrv_freenfslockfile(lfp); 1059 1.2.6.2 yamt FREE((caddr_t)stp, M_NFSDSTATE); 1060 1.2.6.2 yamt newnfsstats.srvdelegates--; 1061 1.2.6.2 yamt nfsrv_openpluslock--; 1062 1.2.6.2 yamt nfsrv_delegatecnt--; 1063 1.2.6.2 yamt } 1064 1.2.6.2 yamt 1065 1.2.6.2 yamt /* 1066 1.2.6.2 yamt * This function frees an open owner and all associated opens. 1067 1.2.6.2 yamt */ 1068 1.2.6.2 yamt static void 1069 1.2.6.2 yamt nfsrv_freeopenowner(struct nfsstate *stp, int cansleep, NFSPROC_T *p) 1070 1.2.6.2 yamt { 1071 1.2.6.2 yamt struct nfsstate *nstp, *tstp; 1072 1.2.6.2 yamt 1073 1.2.6.2 yamt LIST_REMOVE(stp, ls_list); 1074 1.2.6.2 yamt /* 1075 1.2.6.2 yamt * Now, free all associated opens. 1076 1.2.6.2 yamt */ 1077 1.2.6.2 yamt nstp = LIST_FIRST(&stp->ls_open); 1078 1.2.6.2 yamt while (nstp != NULL) { 1079 1.2.6.2 yamt tstp = nstp; 1080 1.2.6.2 yamt nstp = LIST_NEXT(nstp, ls_list); 1081 1.2.6.2 yamt (void) nfsrv_freeopen(tstp, NULL, cansleep, p); 1082 1.2.6.2 yamt } 1083 1.2.6.2 yamt if (stp->ls_op) 1084 1.2.6.2 yamt nfsrvd_derefcache(stp->ls_op); 1085 1.2.6.2 yamt FREE((caddr_t)stp, M_NFSDSTATE); 1086 1.2.6.2 yamt newnfsstats.srvopenowners--; 1087 1.2.6.2 yamt nfsrv_openpluslock--; 1088 1.2.6.2 yamt } 1089 1.2.6.2 yamt 1090 1.2.6.2 yamt /* 1091 1.2.6.2 yamt * This function frees an open (nfsstate open structure) with all associated 1092 1.2.6.2 yamt * lock_owners and locks. It also frees the nfslockfile structure iff there 1093 1.2.6.2 yamt * are no other opens on the file. 1094 1.2.6.2 yamt * Returns 1 if it free'd the nfslockfile, 0 otherwise. 1095 1.2.6.2 yamt */ 1096 1.2.6.2 yamt static int 1097 1.2.6.2 yamt nfsrv_freeopen(struct nfsstate *stp, vnode_t vp, int cansleep, NFSPROC_T *p) 1098 1.2.6.2 yamt { 1099 1.2.6.2 yamt struct nfsstate *nstp, *tstp; 1100 1.2.6.2 yamt struct nfslockfile *lfp; 1101 1.2.6.2 yamt int ret; 1102 1.2.6.2 yamt 1103 1.2.6.2 yamt LIST_REMOVE(stp, ls_hash); 1104 1.2.6.2 yamt LIST_REMOVE(stp, ls_list); 1105 1.2.6.2 yamt LIST_REMOVE(stp, ls_file); 1106 1.2.6.2 yamt 1107 1.2.6.2 yamt lfp = stp->ls_lfp; 1108 1.2.6.2 yamt /* 1109 1.2.6.2 yamt * Now, free all lockowners associated with this open. 1110 1.2.6.2 yamt */ 1111 1.2.6.2 yamt LIST_FOREACH_SAFE(tstp, &stp->ls_open, ls_list, nstp) 1112 1.2.6.2 yamt nfsrv_freelockowner(tstp, vp, cansleep, p); 1113 1.2.6.2 yamt 1114 1.2.6.2 yamt /* 1115 1.2.6.2 yamt * The nfslockfile is freed here if there are no locks 1116 1.2.6.2 yamt * associated with the open. 1117 1.2.6.2 yamt * If there are locks associated with the open, the 1118 1.2.6.2 yamt * nfslockfile structure can be freed via nfsrv_freelockowner(). 1119 1.2.6.2 yamt * Acquire the state mutex to avoid races with calls to 1120 1.2.6.2 yamt * nfsrv_getlockfile(). 1121 1.2.6.2 yamt */ 1122 1.2.6.2 yamt if (cansleep != 0) 1123 1.2.6.2 yamt NFSLOCKSTATE(); 1124 1.2.6.2 yamt if (lfp != NULL && LIST_EMPTY(&lfp->lf_open) && 1125 1.2.6.2 yamt LIST_EMPTY(&lfp->lf_deleg) && LIST_EMPTY(&lfp->lf_lock) && 1126 1.2.6.2 yamt LIST_EMPTY(&lfp->lf_locallock) && LIST_EMPTY(&lfp->lf_rollback) && 1127 1.2.6.2 yamt lfp->lf_usecount == 0 && 1128 1.2.6.2 yamt (cansleep != 0 || nfsv4_testlock(&lfp->lf_locallock_lck) == 0)) { 1129 1.2.6.2 yamt nfsrv_freenfslockfile(lfp); 1130 1.2.6.2 yamt ret = 1; 1131 1.2.6.2 yamt } else 1132 1.2.6.2 yamt ret = 0; 1133 1.2.6.2 yamt if (cansleep != 0) 1134 1.2.6.2 yamt NFSUNLOCKSTATE(); 1135 1.2.6.2 yamt FREE((caddr_t)stp, M_NFSDSTATE); 1136 1.2.6.2 yamt newnfsstats.srvopens--; 1137 1.2.6.2 yamt nfsrv_openpluslock--; 1138 1.2.6.2 yamt return (ret); 1139 1.2.6.2 yamt } 1140 1.2.6.2 yamt 1141 1.2.6.2 yamt /* 1142 1.2.6.2 yamt * Frees a lockowner and all associated locks. 1143 1.2.6.2 yamt */ 1144 1.2.6.2 yamt static void 1145 1.2.6.2 yamt nfsrv_freelockowner(struct nfsstate *stp, vnode_t vp, int cansleep, 1146 1.2.6.2 yamt NFSPROC_T *p) 1147 1.2.6.2 yamt { 1148 1.2.6.2 yamt 1149 1.2.6.2 yamt LIST_REMOVE(stp, ls_hash); 1150 1.2.6.2 yamt LIST_REMOVE(stp, ls_list); 1151 1.2.6.2 yamt nfsrv_freeallnfslocks(stp, vp, cansleep, p); 1152 1.2.6.2 yamt if (stp->ls_op) 1153 1.2.6.2 yamt nfsrvd_derefcache(stp->ls_op); 1154 1.2.6.2 yamt FREE((caddr_t)stp, M_NFSDSTATE); 1155 1.2.6.2 yamt newnfsstats.srvlockowners--; 1156 1.2.6.2 yamt nfsrv_openpluslock--; 1157 1.2.6.2 yamt } 1158 1.2.6.2 yamt 1159 1.2.6.2 yamt /* 1160 1.2.6.2 yamt * Free all the nfs locks on a lockowner. 1161 1.2.6.2 yamt */ 1162 1.2.6.2 yamt static void 1163 1.2.6.2 yamt nfsrv_freeallnfslocks(struct nfsstate *stp, vnode_t vp, int cansleep, 1164 1.2.6.2 yamt NFSPROC_T *p) 1165 1.2.6.2 yamt { 1166 1.2.6.2 yamt struct nfslock *lop, *nlop; 1167 1.2.6.2 yamt struct nfsrollback *rlp, *nrlp; 1168 1.2.6.2 yamt struct nfslockfile *lfp = NULL; 1169 1.2.6.2 yamt int gottvp = 0; 1170 1.2.6.2 yamt vnode_t tvp = NULL; 1171 1.2.6.2 yamt uint64_t first, end; 1172 1.2.6.2 yamt 1173 1.2.6.2 yamt lop = LIST_FIRST(&stp->ls_lock); 1174 1.2.6.2 yamt while (lop != NULL) { 1175 1.2.6.2 yamt nlop = LIST_NEXT(lop, lo_lckowner); 1176 1.2.6.2 yamt /* 1177 1.2.6.2 yamt * Since all locks should be for the same file, lfp should 1178 1.2.6.2 yamt * not change. 1179 1.2.6.2 yamt */ 1180 1.2.6.2 yamt if (lfp == NULL) 1181 1.2.6.2 yamt lfp = lop->lo_lfp; 1182 1.2.6.2 yamt else if (lfp != lop->lo_lfp) 1183 1.2.6.2 yamt panic("allnfslocks"); 1184 1.2.6.2 yamt /* 1185 1.2.6.2 yamt * If vp is NULL and cansleep != 0, a vnode must be acquired 1186 1.2.6.2 yamt * from the file handle. This only occurs when called from 1187 1.2.6.2 yamt * nfsrv_cleanclient(). 1188 1.2.6.2 yamt */ 1189 1.2.6.2 yamt if (gottvp == 0) { 1190 1.2.6.2 yamt if (nfsrv_dolocallocks == 0) 1191 1.2.6.2 yamt tvp = NULL; 1192 1.2.6.2 yamt else if (vp == NULL && cansleep != 0) 1193 1.2.6.2 yamt tvp = nfsvno_getvp(&lfp->lf_fh); 1194 1.2.6.2 yamt else 1195 1.2.6.2 yamt tvp = vp; 1196 1.2.6.2 yamt gottvp = 1; 1197 1.2.6.2 yamt } 1198 1.2.6.2 yamt 1199 1.2.6.2 yamt if (tvp != NULL) { 1200 1.2.6.2 yamt if (cansleep == 0) 1201 1.2.6.2 yamt panic("allnfs2"); 1202 1.2.6.2 yamt first = lop->lo_first; 1203 1.2.6.2 yamt end = lop->lo_end; 1204 1.2.6.2 yamt nfsrv_freenfslock(lop); 1205 1.2.6.2 yamt nfsrv_localunlock(tvp, lfp, first, end, p); 1206 1.2.6.2 yamt LIST_FOREACH_SAFE(rlp, &lfp->lf_rollback, rlck_list, 1207 1.2.6.2 yamt nrlp) 1208 1.2.6.2 yamt free(rlp, M_NFSDROLLBACK); 1209 1.2.6.2 yamt LIST_INIT(&lfp->lf_rollback); 1210 1.2.6.2 yamt } else 1211 1.2.6.2 yamt nfsrv_freenfslock(lop); 1212 1.2.6.2 yamt lop = nlop; 1213 1.2.6.2 yamt } 1214 1.2.6.2 yamt if (vp == NULL && tvp != NULL) 1215 1.2.6.2 yamt vput(tvp); 1216 1.2.6.2 yamt } 1217 1.2.6.2 yamt 1218 1.2.6.2 yamt /* 1219 1.2.6.2 yamt * Free an nfslock structure. 1220 1.2.6.2 yamt */ 1221 1.2.6.2 yamt static void 1222 1.2.6.2 yamt nfsrv_freenfslock(struct nfslock *lop) 1223 1.2.6.2 yamt { 1224 1.2.6.2 yamt 1225 1.2.6.2 yamt if (lop->lo_lckfile.le_prev != NULL) { 1226 1.2.6.2 yamt LIST_REMOVE(lop, lo_lckfile); 1227 1.2.6.2 yamt newnfsstats.srvlocks--; 1228 1.2.6.2 yamt nfsrv_openpluslock--; 1229 1.2.6.2 yamt } 1230 1.2.6.2 yamt LIST_REMOVE(lop, lo_lckowner); 1231 1.2.6.2 yamt FREE((caddr_t)lop, M_NFSDLOCK); 1232 1.2.6.2 yamt } 1233 1.2.6.2 yamt 1234 1.2.6.2 yamt /* 1235 1.2.6.2 yamt * This function frees an nfslockfile structure. 1236 1.2.6.2 yamt */ 1237 1.2.6.2 yamt static void 1238 1.2.6.2 yamt nfsrv_freenfslockfile(struct nfslockfile *lfp) 1239 1.2.6.2 yamt { 1240 1.2.6.2 yamt 1241 1.2.6.2 yamt LIST_REMOVE(lfp, lf_hash); 1242 1.2.6.2 yamt FREE((caddr_t)lfp, M_NFSDLOCKFILE); 1243 1.2.6.2 yamt } 1244 1.2.6.2 yamt 1245 1.2.6.2 yamt /* 1246 1.2.6.2 yamt * This function looks up an nfsstate structure via stateid. 1247 1.2.6.2 yamt */ 1248 1.2.6.2 yamt static int 1249 1.2.6.2 yamt nfsrv_getstate(struct nfsclient *clp, nfsv4stateid_t *stateidp, __unused u_int32_t flags, 1250 1.2.6.2 yamt struct nfsstate **stpp) 1251 1.2.6.2 yamt { 1252 1.2.6.2 yamt struct nfsstate *stp; 1253 1.2.6.2 yamt struct nfsstatehead *hp; 1254 1.2.6.2 yamt int error = 0; 1255 1.2.6.2 yamt 1256 1.2.6.2 yamt *stpp = NULL; 1257 1.2.6.2 yamt hp = NFSSTATEHASH(clp, *stateidp); 1258 1.2.6.2 yamt LIST_FOREACH(stp, hp, ls_hash) { 1259 1.2.6.2 yamt if (!NFSBCMP(stp->ls_stateid.other, stateidp->other, 1260 1.2.6.2 yamt NFSX_STATEIDOTHER)) 1261 1.2.6.2 yamt break; 1262 1.2.6.2 yamt } 1263 1.2.6.2 yamt 1264 1.2.6.2 yamt /* 1265 1.2.6.2 yamt * If no state id in list, return NFSERR_BADSTATEID. 1266 1.2.6.2 yamt */ 1267 1.2.6.2 yamt if (stp == NULL) { 1268 1.2.6.2 yamt error = NFSERR_BADSTATEID; 1269 1.2.6.2 yamt goto out; 1270 1.2.6.2 yamt } 1271 1.2.6.2 yamt *stpp = stp; 1272 1.2.6.2 yamt 1273 1.2.6.2 yamt out: 1274 1.2.6.2 yamt NFSEXITCODE(error); 1275 1.2.6.2 yamt return (error); 1276 1.2.6.2 yamt } 1277 1.2.6.2 yamt 1278 1.2.6.2 yamt /* 1279 1.2.6.2 yamt * This function gets an nfsstate structure via owner string. 1280 1.2.6.2 yamt */ 1281 1.2.6.2 yamt static void 1282 1.2.6.2 yamt nfsrv_getowner(struct nfsstatehead *hp, struct nfsstate *new_stp, 1283 1.2.6.2 yamt struct nfsstate **stpp) 1284 1.2.6.2 yamt { 1285 1.2.6.2 yamt struct nfsstate *stp; 1286 1.2.6.2 yamt 1287 1.2.6.2 yamt *stpp = NULL; 1288 1.2.6.2 yamt LIST_FOREACH(stp, hp, ls_list) { 1289 1.2.6.2 yamt if (new_stp->ls_ownerlen == stp->ls_ownerlen && 1290 1.2.6.2 yamt !NFSBCMP(new_stp->ls_owner,stp->ls_owner,stp->ls_ownerlen)) { 1291 1.2.6.2 yamt *stpp = stp; 1292 1.2.6.2 yamt return; 1293 1.2.6.2 yamt } 1294 1.2.6.2 yamt } 1295 1.2.6.2 yamt } 1296 1.2.6.2 yamt 1297 1.2.6.2 yamt /* 1298 1.2.6.2 yamt * Lock control function called to update lock status. 1299 1.2.6.2 yamt * Returns 0 upon success, -1 if there is no lock and the flags indicate 1300 1.2.6.2 yamt * that one isn't to be created and an NFSERR_xxx for other errors. 1301 1.2.6.2 yamt * The structures new_stp and new_lop are passed in as pointers that should 1302 1.2.6.2 yamt * be set to NULL if the structure is used and shouldn't be free'd. 1303 1.2.6.2 yamt * For the NFSLCK_TEST and NFSLCK_CHECK cases, the structures are 1304 1.2.6.2 yamt * never used and can safely be allocated on the stack. For all other 1305 1.2.6.2 yamt * cases, *new_stpp and *new_lopp should be malloc'd before the call, 1306 1.2.6.2 yamt * in case they are used. 1307 1.2.6.2 yamt */ 1308 1.2.6.2 yamt APPLESTATIC int 1309 1.2.6.2 yamt nfsrv_lockctrl(vnode_t vp, struct nfsstate **new_stpp, 1310 1.2.6.2 yamt struct nfslock **new_lopp, struct nfslockconflict *cfp, 1311 1.2.6.2 yamt nfsquad_t clientid, nfsv4stateid_t *stateidp, 1312 1.2.6.2 yamt __unused struct nfsexstuff *exp, 1313 1.2.6.2 yamt struct nfsrv_descript *nd, NFSPROC_T *p) 1314 1.2.6.2 yamt { 1315 1.2.6.2 yamt struct nfslock *lop; 1316 1.2.6.2 yamt struct nfsstate *new_stp = *new_stpp; 1317 1.2.6.2 yamt struct nfslock *new_lop = *new_lopp; 1318 1.2.6.2 yamt struct nfsstate *tstp, *mystp, *nstp; 1319 1.2.6.2 yamt int specialid = 0; 1320 1.2.6.2 yamt struct nfslockfile *lfp; 1321 1.2.6.2 yamt struct nfslock *other_lop = NULL; 1322 1.2.6.2 yamt struct nfsstate *stp, *lckstp = NULL; 1323 1.2.6.2 yamt struct nfsclient *clp = NULL; 1324 1.2.6.2 yamt u_int32_t bits; 1325 1.2.6.2 yamt int error = 0, haslock = 0, ret, reterr; 1326 1.2.6.2 yamt int getlckret, delegation = 0, filestruct_locked; 1327 1.2.6.2 yamt fhandle_t nfh; 1328 1.2.6.2 yamt uint64_t first, end; 1329 1.2.6.2 yamt uint32_t lock_flags; 1330 1.2.6.2 yamt 1331 1.2.6.2 yamt if (new_stp->ls_flags & (NFSLCK_CHECK | NFSLCK_SETATTR)) { 1332 1.2.6.2 yamt /* 1333 1.2.6.2 yamt * Note the special cases of "all 1s" or "all 0s" stateids and 1334 1.2.6.2 yamt * let reads with all 1s go ahead. 1335 1.2.6.2 yamt */ 1336 1.2.6.2 yamt if (new_stp->ls_stateid.seqid == 0x0 && 1337 1.2.6.2 yamt new_stp->ls_stateid.other[0] == 0x0 && 1338 1.2.6.2 yamt new_stp->ls_stateid.other[1] == 0x0 && 1339 1.2.6.2 yamt new_stp->ls_stateid.other[2] == 0x0) 1340 1.2.6.2 yamt specialid = 1; 1341 1.2.6.2 yamt else if (new_stp->ls_stateid.seqid == 0xffffffff && 1342 1.2.6.2 yamt new_stp->ls_stateid.other[0] == 0xffffffff && 1343 1.2.6.2 yamt new_stp->ls_stateid.other[1] == 0xffffffff && 1344 1.2.6.2 yamt new_stp->ls_stateid.other[2] == 0xffffffff) 1345 1.2.6.2 yamt specialid = 2; 1346 1.2.6.2 yamt } 1347 1.2.6.2 yamt 1348 1.2.6.2 yamt /* 1349 1.2.6.2 yamt * Check for restart conditions (client and server). 1350 1.2.6.2 yamt */ 1351 1.2.6.2 yamt error = nfsrv_checkrestart(clientid, new_stp->ls_flags, 1352 1.2.6.2 yamt &new_stp->ls_stateid, specialid); 1353 1.2.6.2 yamt if (error) 1354 1.2.6.2 yamt goto out; 1355 1.2.6.2 yamt 1356 1.2.6.2 yamt /* 1357 1.2.6.2 yamt * Check for state resource limit exceeded. 1358 1.2.6.2 yamt */ 1359 1.2.6.2 yamt if ((new_stp->ls_flags & NFSLCK_LOCK) && 1360 1.2.6.2 yamt nfsrv_openpluslock > NFSRV_V4STATELIMIT) { 1361 1.2.6.2 yamt error = NFSERR_RESOURCE; 1362 1.2.6.2 yamt goto out; 1363 1.2.6.2 yamt } 1364 1.2.6.2 yamt 1365 1.2.6.2 yamt /* 1366 1.2.6.2 yamt * For the lock case, get another nfslock structure, 1367 1.2.6.2 yamt * just in case we need it. 1368 1.2.6.2 yamt * Malloc now, before we start sifting through the linked lists, 1369 1.2.6.2 yamt * in case we have to wait for memory. 1370 1.2.6.2 yamt */ 1371 1.2.6.2 yamt tryagain: 1372 1.2.6.2 yamt if (new_stp->ls_flags & NFSLCK_LOCK) 1373 1.2.6.2 yamt MALLOC(other_lop, struct nfslock *, sizeof (struct nfslock), 1374 1.2.6.2 yamt M_NFSDLOCK, M_WAITOK); 1375 1.2.6.2 yamt filestruct_locked = 0; 1376 1.2.6.2 yamt reterr = 0; 1377 1.2.6.2 yamt lfp = NULL; 1378 1.2.6.2 yamt 1379 1.2.6.2 yamt /* 1380 1.2.6.2 yamt * Get the lockfile structure for CFH now, so we can do a sanity 1381 1.2.6.2 yamt * check against the stateid, before incrementing the seqid#, since 1382 1.2.6.2 yamt * we want to return NFSERR_BADSTATEID on failure and the seqid# 1383 1.2.6.2 yamt * shouldn't be incremented for this case. 1384 1.2.6.2 yamt * If nfsrv_getlockfile() returns -1, it means "not found", which 1385 1.2.6.2 yamt * will be handled later. 1386 1.2.6.2 yamt * If we are doing Lock/LockU and local locking is enabled, sleep 1387 1.2.6.2 yamt * lock the nfslockfile structure. 1388 1.2.6.2 yamt */ 1389 1.2.6.2 yamt getlckret = nfsrv_getlockfh(vp, new_stp->ls_flags, NULL, &nfh, p); 1390 1.2.6.2 yamt NFSLOCKSTATE(); 1391 1.2.6.2 yamt if (getlckret == 0) { 1392 1.2.6.2 yamt if ((new_stp->ls_flags & (NFSLCK_LOCK | NFSLCK_UNLOCK)) != 0 && 1393 1.2.6.2 yamt nfsrv_dolocallocks != 0 && nd->nd_repstat == 0) { 1394 1.2.6.2 yamt getlckret = nfsrv_getlockfile(new_stp->ls_flags, NULL, 1395 1.2.6.2 yamt &lfp, &nfh, 1); 1396 1.2.6.2 yamt if (getlckret == 0) 1397 1.2.6.2 yamt filestruct_locked = 1; 1398 1.2.6.2 yamt } else 1399 1.2.6.2 yamt getlckret = nfsrv_getlockfile(new_stp->ls_flags, NULL, 1400 1.2.6.2 yamt &lfp, &nfh, 0); 1401 1.2.6.2 yamt } 1402 1.2.6.2 yamt if (getlckret != 0 && getlckret != -1) 1403 1.2.6.2 yamt reterr = getlckret; 1404 1.2.6.2 yamt 1405 1.2.6.2 yamt if (filestruct_locked != 0) { 1406 1.2.6.2 yamt LIST_INIT(&lfp->lf_rollback); 1407 1.2.6.2 yamt if ((new_stp->ls_flags & NFSLCK_LOCK)) { 1408 1.2.6.2 yamt /* 1409 1.2.6.2 yamt * For local locking, do the advisory locking now, so 1410 1.2.6.2 yamt * that any conflict can be detected. A failure later 1411 1.2.6.2 yamt * can be rolled back locally. If an error is returned, 1412 1.2.6.2 yamt * struct nfslockfile has been unlocked and any local 1413 1.2.6.2 yamt * locking rolled back. 1414 1.2.6.2 yamt */ 1415 1.2.6.2 yamt NFSUNLOCKSTATE(); 1416 1.2.6.2 yamt reterr = nfsrv_locallock(vp, lfp, 1417 1.2.6.2 yamt (new_lop->lo_flags & (NFSLCK_READ | NFSLCK_WRITE)), 1418 1.2.6.2 yamt new_lop->lo_first, new_lop->lo_end, cfp, p); 1419 1.2.6.2 yamt NFSLOCKSTATE(); 1420 1.2.6.2 yamt } 1421 1.2.6.2 yamt } 1422 1.2.6.2 yamt 1423 1.2.6.2 yamt if (specialid == 0) { 1424 1.2.6.2 yamt if (new_stp->ls_flags & NFSLCK_TEST) { 1425 1.2.6.2 yamt /* 1426 1.2.6.2 yamt * RFC 3530 does not list LockT as an op that renews a 1427 1.2.6.2 yamt * lease, but the concensus seems to be that it is ok 1428 1.2.6.2 yamt * for a server to do so. 1429 1.2.6.2 yamt */ 1430 1.2.6.2 yamt error = nfsrv_getclient(clientid, CLOPS_RENEW, &clp, 1431 1.2.6.2 yamt (nfsquad_t)((u_quad_t)0), NULL, p); 1432 1.2.6.2 yamt 1433 1.2.6.2 yamt /* 1434 1.2.6.2 yamt * Since NFSERR_EXPIRED, NFSERR_ADMINREVOKED are not valid 1435 1.2.6.2 yamt * error returns for LockT, just go ahead and test for a lock, 1436 1.2.6.2 yamt * since there are no locks for this client, but other locks 1437 1.2.6.2 yamt * can conflict. (ie. same client will always be false) 1438 1.2.6.2 yamt */ 1439 1.2.6.2 yamt if (error == NFSERR_EXPIRED || error == NFSERR_ADMINREVOKED) 1440 1.2.6.2 yamt error = 0; 1441 1.2.6.2 yamt lckstp = new_stp; 1442 1.2.6.2 yamt } else { 1443 1.2.6.2 yamt error = nfsrv_getclient(clientid, CLOPS_RENEW, &clp, 1444 1.2.6.2 yamt (nfsquad_t)((u_quad_t)0), NULL, p); 1445 1.2.6.2 yamt if (error == 0) 1446 1.2.6.2 yamt /* 1447 1.2.6.2 yamt * Look up the stateid 1448 1.2.6.2 yamt */ 1449 1.2.6.2 yamt error = nfsrv_getstate(clp, &new_stp->ls_stateid, 1450 1.2.6.2 yamt new_stp->ls_flags, &stp); 1451 1.2.6.2 yamt /* 1452 1.2.6.2 yamt * do some sanity checks for an unconfirmed open or a 1453 1.2.6.2 yamt * stateid that refers to the wrong file, for an open stateid 1454 1.2.6.2 yamt */ 1455 1.2.6.2 yamt if (error == 0 && (stp->ls_flags & NFSLCK_OPEN) && 1456 1.2.6.2 yamt ((stp->ls_openowner->ls_flags & NFSLCK_NEEDSCONFIRM) || 1457 1.2.6.2 yamt (getlckret == 0 && stp->ls_lfp != lfp))) 1458 1.2.6.2 yamt error = NFSERR_BADSTATEID; 1459 1.2.6.2 yamt if (error == 0 && 1460 1.2.6.2 yamt (stp->ls_flags & (NFSLCK_DELEGREAD | NFSLCK_DELEGWRITE)) && 1461 1.2.6.2 yamt getlckret == 0 && stp->ls_lfp != lfp) 1462 1.2.6.2 yamt error = NFSERR_BADSTATEID; 1463 1.2.6.2 yamt 1464 1.2.6.2 yamt /* 1465 1.2.6.2 yamt * If the lockowner stateid doesn't refer to the same file, 1466 1.2.6.2 yamt * I believe that is considered ok, since some clients will 1467 1.2.6.2 yamt * only create a single lockowner and use that for all locks 1468 1.2.6.2 yamt * on all files. 1469 1.2.6.2 yamt * For now, log it as a diagnostic, instead of considering it 1470 1.2.6.2 yamt * a BadStateid. 1471 1.2.6.2 yamt */ 1472 1.2.6.2 yamt if (error == 0 && (stp->ls_flags & 1473 1.2.6.2 yamt (NFSLCK_OPEN | NFSLCK_DELEGREAD | NFSLCK_DELEGWRITE)) == 0 && 1474 1.2.6.2 yamt getlckret == 0 && stp->ls_lfp != lfp) { 1475 1.2.6.2 yamt #ifdef DIAGNOSTIC 1476 1.2.6.2 yamt printf("Got a lock statid for different file open\n"); 1477 1.2.6.2 yamt #endif 1478 1.2.6.2 yamt /* 1479 1.2.6.2 yamt error = NFSERR_BADSTATEID; 1480 1.2.6.2 yamt */ 1481 1.2.6.2 yamt } 1482 1.2.6.2 yamt 1483 1.2.6.2 yamt if (error == 0) { 1484 1.2.6.2 yamt if (new_stp->ls_flags & NFSLCK_OPENTOLOCK) { 1485 1.2.6.2 yamt /* 1486 1.2.6.2 yamt * If haslock set, we've already checked the seqid. 1487 1.2.6.2 yamt */ 1488 1.2.6.2 yamt if (!haslock) { 1489 1.2.6.2 yamt if (stp->ls_flags & NFSLCK_OPEN) 1490 1.2.6.2 yamt error = nfsrv_checkseqid(nd, new_stp->ls_seq, 1491 1.2.6.2 yamt stp->ls_openowner, new_stp->ls_op); 1492 1.2.6.2 yamt else 1493 1.2.6.2 yamt error = NFSERR_BADSTATEID; 1494 1.2.6.2 yamt } 1495 1.2.6.2 yamt if (!error) 1496 1.2.6.2 yamt nfsrv_getowner(&stp->ls_open, new_stp, &lckstp); 1497 1.2.6.2 yamt if (lckstp) 1498 1.2.6.2 yamt /* 1499 1.2.6.2 yamt * I believe this should be an error, but it 1500 1.2.6.2 yamt * isn't obvious what NFSERR_xxx would be 1501 1.2.6.2 yamt * appropriate, so I'll use NFSERR_INVAL for now. 1502 1.2.6.2 yamt */ 1503 1.2.6.2 yamt error = NFSERR_INVAL; 1504 1.2.6.2 yamt else 1505 1.2.6.2 yamt lckstp = new_stp; 1506 1.2.6.2 yamt } else if (new_stp->ls_flags&(NFSLCK_LOCK|NFSLCK_UNLOCK)) { 1507 1.2.6.2 yamt /* 1508 1.2.6.2 yamt * If haslock set, ditto above. 1509 1.2.6.2 yamt */ 1510 1.2.6.2 yamt if (!haslock) { 1511 1.2.6.2 yamt if (stp->ls_flags & NFSLCK_OPEN) 1512 1.2.6.2 yamt error = NFSERR_BADSTATEID; 1513 1.2.6.2 yamt else 1514 1.2.6.2 yamt error = nfsrv_checkseqid(nd, new_stp->ls_seq, 1515 1.2.6.2 yamt stp, new_stp->ls_op); 1516 1.2.6.2 yamt } 1517 1.2.6.2 yamt lckstp = stp; 1518 1.2.6.2 yamt } else { 1519 1.2.6.2 yamt lckstp = stp; 1520 1.2.6.2 yamt } 1521 1.2.6.2 yamt } 1522 1.2.6.2 yamt /* 1523 1.2.6.2 yamt * If the seqid part of the stateid isn't the same, return 1524 1.2.6.2 yamt * NFSERR_OLDSTATEID for cases other than I/O Ops. 1525 1.2.6.2 yamt * For I/O Ops, only return NFSERR_OLDSTATEID if 1526 1.2.6.2 yamt * nfsrv_returnoldstateid is set. (The concensus on the email 1527 1.2.6.2 yamt * list was that most clients would prefer to not receive 1528 1.2.6.2 yamt * NFSERR_OLDSTATEID for I/O Ops, but the RFC suggests that that 1529 1.2.6.2 yamt * is what will happen, so I use the nfsrv_returnoldstateid to 1530 1.2.6.2 yamt * allow for either server configuration.) 1531 1.2.6.2 yamt */ 1532 1.2.6.2 yamt if (!error && stp->ls_stateid.seqid!=new_stp->ls_stateid.seqid && 1533 1.2.6.2 yamt (!(new_stp->ls_flags & NFSLCK_CHECK) || 1534 1.2.6.2 yamt nfsrv_returnoldstateid)) 1535 1.2.6.2 yamt error = NFSERR_OLDSTATEID; 1536 1.2.6.2 yamt } 1537 1.2.6.2 yamt } 1538 1.2.6.2 yamt 1539 1.2.6.2 yamt /* 1540 1.2.6.2 yamt * Now we can check for grace. 1541 1.2.6.2 yamt */ 1542 1.2.6.2 yamt if (!error) 1543 1.2.6.2 yamt error = nfsrv_checkgrace(new_stp->ls_flags); 1544 1.2.6.2 yamt if ((new_stp->ls_flags & NFSLCK_RECLAIM) && !error && 1545 1.2.6.2 yamt nfsrv_checkstable(clp)) 1546 1.2.6.2 yamt error = NFSERR_NOGRACE; 1547 1.2.6.2 yamt /* 1548 1.2.6.2 yamt * If we successfully Reclaimed state, note that. 1549 1.2.6.2 yamt */ 1550 1.2.6.2 yamt if ((new_stp->ls_flags & NFSLCK_RECLAIM) && !error) 1551 1.2.6.2 yamt nfsrv_markstable(clp); 1552 1.2.6.2 yamt 1553 1.2.6.2 yamt /* 1554 1.2.6.2 yamt * At this point, either error == NFSERR_BADSTATEID or the 1555 1.2.6.2 yamt * seqid# has been updated, so we can return any error. 1556 1.2.6.2 yamt * If error == 0, there may be an error in: 1557 1.2.6.2 yamt * nd_repstat - Set by the calling function. 1558 1.2.6.2 yamt * reterr - Set above, if getting the nfslockfile structure 1559 1.2.6.2 yamt * or acquiring the local lock failed. 1560 1.2.6.2 yamt * (If both of these are set, nd_repstat should probably be 1561 1.2.6.2 yamt * returned, since that error was detected before this 1562 1.2.6.2 yamt * function call.) 1563 1.2.6.2 yamt */ 1564 1.2.6.2 yamt if (error != 0 || nd->nd_repstat != 0 || reterr != 0) { 1565 1.2.6.2 yamt if (error == 0) { 1566 1.2.6.2 yamt if (nd->nd_repstat != 0) 1567 1.2.6.2 yamt error = nd->nd_repstat; 1568 1.2.6.2 yamt else 1569 1.2.6.2 yamt error = reterr; 1570 1.2.6.2 yamt } 1571 1.2.6.2 yamt if (filestruct_locked != 0) { 1572 1.2.6.2 yamt /* Roll back local locks. */ 1573 1.2.6.2 yamt NFSUNLOCKSTATE(); 1574 1.2.6.2 yamt nfsrv_locallock_rollback(vp, lfp, p); 1575 1.2.6.2 yamt NFSLOCKSTATE(); 1576 1.2.6.2 yamt nfsrv_unlocklf(lfp); 1577 1.2.6.2 yamt } 1578 1.2.6.2 yamt NFSUNLOCKSTATE(); 1579 1.2.6.2 yamt goto out; 1580 1.2.6.2 yamt } 1581 1.2.6.2 yamt 1582 1.2.6.2 yamt /* 1583 1.2.6.2 yamt * Check the nfsrv_getlockfile return. 1584 1.2.6.2 yamt * Returned -1 if no structure found. 1585 1.2.6.2 yamt */ 1586 1.2.6.2 yamt if (getlckret == -1) { 1587 1.2.6.2 yamt error = NFSERR_EXPIRED; 1588 1.2.6.2 yamt /* 1589 1.2.6.2 yamt * Called from lockt, so no lock is OK. 1590 1.2.6.2 yamt */ 1591 1.2.6.2 yamt if (new_stp->ls_flags & NFSLCK_TEST) { 1592 1.2.6.2 yamt error = 0; 1593 1.2.6.2 yamt } else if (new_stp->ls_flags & 1594 1.2.6.2 yamt (NFSLCK_CHECK | NFSLCK_SETATTR)) { 1595 1.2.6.2 yamt /* 1596 1.2.6.2 yamt * Called to check for a lock, OK if the stateid is all 1597 1.2.6.2 yamt * 1s or all 0s, but there should be an nfsstate 1598 1.2.6.2 yamt * otherwise. 1599 1.2.6.2 yamt * (ie. If there is no open, I'll assume no share 1600 1.2.6.2 yamt * deny bits.) 1601 1.2.6.2 yamt */ 1602 1.2.6.2 yamt if (specialid) 1603 1.2.6.2 yamt error = 0; 1604 1.2.6.2 yamt else 1605 1.2.6.2 yamt error = NFSERR_BADSTATEID; 1606 1.2.6.2 yamt } 1607 1.2.6.2 yamt NFSUNLOCKSTATE(); 1608 1.2.6.2 yamt goto out; 1609 1.2.6.2 yamt } 1610 1.2.6.2 yamt 1611 1.2.6.2 yamt /* 1612 1.2.6.2 yamt * For NFSLCK_CHECK and NFSLCK_LOCK, test for a share conflict. 1613 1.2.6.2 yamt * For NFSLCK_CHECK, allow a read if write access is granted, 1614 1.2.6.2 yamt * but check for a deny. For NFSLCK_LOCK, require correct access, 1615 1.2.6.2 yamt * which implies a conflicting deny can't exist. 1616 1.2.6.2 yamt */ 1617 1.2.6.2 yamt if (new_stp->ls_flags & (NFSLCK_CHECK | NFSLCK_LOCK)) { 1618 1.2.6.2 yamt /* 1619 1.2.6.2 yamt * Four kinds of state id: 1620 1.2.6.2 yamt * - specialid (all 0s or all 1s), only for NFSLCK_CHECK 1621 1.2.6.2 yamt * - stateid for an open 1622 1.2.6.2 yamt * - stateid for a delegation 1623 1.2.6.2 yamt * - stateid for a lock owner 1624 1.2.6.2 yamt */ 1625 1.2.6.2 yamt if (!specialid) { 1626 1.2.6.2 yamt if (stp->ls_flags & (NFSLCK_DELEGREAD | NFSLCK_DELEGWRITE)) { 1627 1.2.6.2 yamt delegation = 1; 1628 1.2.6.2 yamt mystp = stp; 1629 1.2.6.2 yamt nfsrv_delaydelegtimeout(stp); 1630 1.2.6.2 yamt } else if (stp->ls_flags & NFSLCK_OPEN) { 1631 1.2.6.2 yamt mystp = stp; 1632 1.2.6.2 yamt } else { 1633 1.2.6.2 yamt mystp = stp->ls_openstp; 1634 1.2.6.2 yamt } 1635 1.2.6.2 yamt /* 1636 1.2.6.2 yamt * If locking or checking, require correct access 1637 1.2.6.2 yamt * bit set. 1638 1.2.6.2 yamt */ 1639 1.2.6.2 yamt if (((new_stp->ls_flags & NFSLCK_LOCK) && 1640 1.2.6.2 yamt !((new_lop->lo_flags >> NFSLCK_LOCKSHIFT) & 1641 1.2.6.2 yamt mystp->ls_flags & NFSLCK_ACCESSBITS)) || 1642 1.2.6.2 yamt ((new_stp->ls_flags & (NFSLCK_CHECK|NFSLCK_READACCESS)) == 1643 1.2.6.2 yamt (NFSLCK_CHECK | NFSLCK_READACCESS) && 1644 1.2.6.2 yamt !(mystp->ls_flags & NFSLCK_READACCESS)) || 1645 1.2.6.2 yamt ((new_stp->ls_flags & (NFSLCK_CHECK|NFSLCK_WRITEACCESS)) == 1646 1.2.6.2 yamt (NFSLCK_CHECK | NFSLCK_WRITEACCESS) && 1647 1.2.6.2 yamt !(mystp->ls_flags & NFSLCK_WRITEACCESS))) { 1648 1.2.6.2 yamt if (filestruct_locked != 0) { 1649 1.2.6.2 yamt /* Roll back local locks. */ 1650 1.2.6.2 yamt NFSUNLOCKSTATE(); 1651 1.2.6.2 yamt nfsrv_locallock_rollback(vp, lfp, p); 1652 1.2.6.2 yamt NFSLOCKSTATE(); 1653 1.2.6.2 yamt nfsrv_unlocklf(lfp); 1654 1.2.6.2 yamt } 1655 1.2.6.2 yamt NFSUNLOCKSTATE(); 1656 1.2.6.2 yamt error = NFSERR_OPENMODE; 1657 1.2.6.2 yamt goto out; 1658 1.2.6.2 yamt } 1659 1.2.6.2 yamt } else 1660 1.2.6.2 yamt mystp = NULL; 1661 1.2.6.2 yamt if ((new_stp->ls_flags & NFSLCK_CHECK) && !delegation) { 1662 1.2.6.2 yamt /* 1663 1.2.6.2 yamt * Check for a conflicting deny bit. 1664 1.2.6.2 yamt */ 1665 1.2.6.2 yamt LIST_FOREACH(tstp, &lfp->lf_open, ls_file) { 1666 1.2.6.2 yamt if (tstp != mystp) { 1667 1.2.6.2 yamt bits = tstp->ls_flags; 1668 1.2.6.2 yamt bits >>= NFSLCK_SHIFT; 1669 1.2.6.2 yamt if (new_stp->ls_flags & bits & NFSLCK_ACCESSBITS) { 1670 1.2.6.2 yamt ret = nfsrv_clientconflict(tstp->ls_clp, &haslock, 1671 1.2.6.2 yamt vp, p); 1672 1.2.6.2 yamt if (ret == 1) { 1673 1.2.6.2 yamt /* 1674 1.2.6.2 yamt * nfsrv_clientconflict unlocks state 1675 1.2.6.2 yamt * when it returns non-zero. 1676 1.2.6.2 yamt */ 1677 1.2.6.2 yamt lckstp = NULL; 1678 1.2.6.2 yamt goto tryagain; 1679 1.2.6.2 yamt } 1680 1.2.6.2 yamt if (ret == 0) 1681 1.2.6.2 yamt NFSUNLOCKSTATE(); 1682 1.2.6.2 yamt if (ret == 2) 1683 1.2.6.2 yamt error = NFSERR_PERM; 1684 1.2.6.2 yamt else 1685 1.2.6.2 yamt error = NFSERR_OPENMODE; 1686 1.2.6.2 yamt goto out; 1687 1.2.6.2 yamt } 1688 1.2.6.2 yamt } 1689 1.2.6.2 yamt } 1690 1.2.6.2 yamt 1691 1.2.6.2 yamt /* We're outta here */ 1692 1.2.6.2 yamt NFSUNLOCKSTATE(); 1693 1.2.6.2 yamt goto out; 1694 1.2.6.2 yamt } 1695 1.2.6.2 yamt } 1696 1.2.6.2 yamt 1697 1.2.6.2 yamt /* 1698 1.2.6.2 yamt * For setattr, just get rid of all the Delegations for other clients. 1699 1.2.6.2 yamt */ 1700 1.2.6.2 yamt if (new_stp->ls_flags & NFSLCK_SETATTR) { 1701 1.2.6.2 yamt ret = nfsrv_cleandeleg(vp, lfp, clp, &haslock, p); 1702 1.2.6.2 yamt if (ret) { 1703 1.2.6.2 yamt /* 1704 1.2.6.2 yamt * nfsrv_cleandeleg() unlocks state when it 1705 1.2.6.2 yamt * returns non-zero. 1706 1.2.6.2 yamt */ 1707 1.2.6.2 yamt if (ret == -1) { 1708 1.2.6.2 yamt lckstp = NULL; 1709 1.2.6.2 yamt goto tryagain; 1710 1.2.6.2 yamt } 1711 1.2.6.2 yamt error = ret; 1712 1.2.6.2 yamt goto out; 1713 1.2.6.2 yamt } 1714 1.2.6.2 yamt if (!(new_stp->ls_flags & NFSLCK_CHECK) || 1715 1.2.6.2 yamt (LIST_EMPTY(&lfp->lf_open) && LIST_EMPTY(&lfp->lf_lock) && 1716 1.2.6.2 yamt LIST_EMPTY(&lfp->lf_deleg))) { 1717 1.2.6.2 yamt NFSUNLOCKSTATE(); 1718 1.2.6.2 yamt goto out; 1719 1.2.6.2 yamt } 1720 1.2.6.2 yamt } 1721 1.2.6.2 yamt 1722 1.2.6.2 yamt /* 1723 1.2.6.2 yamt * Check for a conflicting delegation. If one is found, call 1724 1.2.6.2 yamt * nfsrv_delegconflict() to handle it. If the v4root lock hasn't 1725 1.2.6.2 yamt * been set yet, it will get the lock. Otherwise, it will recall 1726 1.2.6.2 yamt * the delegation. Then, we try try again... 1727 1.2.6.2 yamt * I currently believe the conflict algorithm to be: 1728 1.2.6.2 yamt * For Lock Ops (Lock/LockT/LockU) 1729 1.2.6.2 yamt * - there is a conflict iff a different client has a write delegation 1730 1.2.6.2 yamt * For Reading (Read Op) 1731 1.2.6.2 yamt * - there is a conflict iff a different client has a write delegation 1732 1.2.6.2 yamt * (the specialids are always a different client) 1733 1.2.6.2 yamt * For Writing (Write/Setattr of size) 1734 1.2.6.2 yamt * - there is a conflict if a different client has any delegation 1735 1.2.6.2 yamt * - there is a conflict if the same client has a read delegation 1736 1.2.6.2 yamt * (I don't understand why this isn't allowed, but that seems to be 1737 1.2.6.2 yamt * the current concensus?) 1738 1.2.6.2 yamt */ 1739 1.2.6.2 yamt tstp = LIST_FIRST(&lfp->lf_deleg); 1740 1.2.6.2 yamt while (tstp != NULL) { 1741 1.2.6.2 yamt nstp = LIST_NEXT(tstp, ls_file); 1742 1.2.6.2 yamt if ((((new_stp->ls_flags&(NFSLCK_LOCK|NFSLCK_UNLOCK|NFSLCK_TEST))|| 1743 1.2.6.2 yamt ((new_stp->ls_flags & NFSLCK_CHECK) && 1744 1.2.6.2 yamt (new_lop->lo_flags & NFSLCK_READ))) && 1745 1.2.6.2 yamt clp != tstp->ls_clp && 1746 1.2.6.2 yamt (tstp->ls_flags & NFSLCK_DELEGWRITE)) || 1747 1.2.6.2 yamt ((new_stp->ls_flags & NFSLCK_CHECK) && 1748 1.2.6.2 yamt (new_lop->lo_flags & NFSLCK_WRITE) && 1749 1.2.6.2 yamt (clp != tstp->ls_clp || 1750 1.2.6.2 yamt (tstp->ls_flags & NFSLCK_DELEGREAD)))) { 1751 1.2.6.2 yamt if (filestruct_locked != 0) { 1752 1.2.6.2 yamt /* Roll back local locks. */ 1753 1.2.6.2 yamt NFSUNLOCKSTATE(); 1754 1.2.6.2 yamt nfsrv_locallock_rollback(vp, lfp, p); 1755 1.2.6.2 yamt NFSLOCKSTATE(); 1756 1.2.6.2 yamt nfsrv_unlocklf(lfp); 1757 1.2.6.2 yamt } 1758 1.2.6.2 yamt ret = nfsrv_delegconflict(tstp, &haslock, p, vp); 1759 1.2.6.2 yamt if (ret) { 1760 1.2.6.2 yamt /* 1761 1.2.6.2 yamt * nfsrv_delegconflict unlocks state when it 1762 1.2.6.2 yamt * returns non-zero, which it always does. 1763 1.2.6.2 yamt */ 1764 1.2.6.2 yamt if (other_lop) { 1765 1.2.6.2 yamt FREE((caddr_t)other_lop, M_NFSDLOCK); 1766 1.2.6.2 yamt other_lop = NULL; 1767 1.2.6.2 yamt } 1768 1.2.6.2 yamt if (ret == -1) { 1769 1.2.6.2 yamt lckstp = NULL; 1770 1.2.6.2 yamt goto tryagain; 1771 1.2.6.2 yamt } 1772 1.2.6.2 yamt error = ret; 1773 1.2.6.2 yamt goto out; 1774 1.2.6.2 yamt } 1775 1.2.6.2 yamt /* Never gets here. */ 1776 1.2.6.2 yamt } 1777 1.2.6.2 yamt tstp = nstp; 1778 1.2.6.2 yamt } 1779 1.2.6.2 yamt 1780 1.2.6.2 yamt /* 1781 1.2.6.2 yamt * Handle the unlock case by calling nfsrv_updatelock(). 1782 1.2.6.2 yamt * (Should I have done some access checking above for unlock? For now, 1783 1.2.6.2 yamt * just let it happen.) 1784 1.2.6.2 yamt */ 1785 1.2.6.2 yamt if (new_stp->ls_flags & NFSLCK_UNLOCK) { 1786 1.2.6.2 yamt first = new_lop->lo_first; 1787 1.2.6.2 yamt end = new_lop->lo_end; 1788 1.2.6.2 yamt nfsrv_updatelock(stp, new_lopp, &other_lop, lfp); 1789 1.2.6.2 yamt stateidp->seqid = ++(stp->ls_stateid.seqid); 1790 1.2.6.2 yamt stateidp->other[0] = stp->ls_stateid.other[0]; 1791 1.2.6.2 yamt stateidp->other[1] = stp->ls_stateid.other[1]; 1792 1.2.6.2 yamt stateidp->other[2] = stp->ls_stateid.other[2]; 1793 1.2.6.2 yamt if (filestruct_locked != 0) { 1794 1.2.6.2 yamt NFSUNLOCKSTATE(); 1795 1.2.6.2 yamt /* Update the local locks. */ 1796 1.2.6.2 yamt nfsrv_localunlock(vp, lfp, first, end, p); 1797 1.2.6.2 yamt NFSLOCKSTATE(); 1798 1.2.6.2 yamt nfsrv_unlocklf(lfp); 1799 1.2.6.2 yamt } 1800 1.2.6.2 yamt NFSUNLOCKSTATE(); 1801 1.2.6.2 yamt goto out; 1802 1.2.6.2 yamt } 1803 1.2.6.2 yamt 1804 1.2.6.2 yamt /* 1805 1.2.6.2 yamt * Search for a conflicting lock. A lock conflicts if: 1806 1.2.6.2 yamt * - the lock range overlaps and 1807 1.2.6.2 yamt * - at least one lock is a write lock and 1808 1.2.6.2 yamt * - it is not owned by the same lock owner 1809 1.2.6.2 yamt */ 1810 1.2.6.2 yamt if (!delegation) { 1811 1.2.6.2 yamt LIST_FOREACH(lop, &lfp->lf_lock, lo_lckfile) { 1812 1.2.6.2 yamt if (new_lop->lo_end > lop->lo_first && 1813 1.2.6.2 yamt new_lop->lo_first < lop->lo_end && 1814 1.2.6.2 yamt (new_lop->lo_flags == NFSLCK_WRITE || 1815 1.2.6.2 yamt lop->lo_flags == NFSLCK_WRITE) && 1816 1.2.6.2 yamt lckstp != lop->lo_stp && 1817 1.2.6.2 yamt (clp != lop->lo_stp->ls_clp || 1818 1.2.6.2 yamt lckstp->ls_ownerlen != lop->lo_stp->ls_ownerlen || 1819 1.2.6.2 yamt NFSBCMP(lckstp->ls_owner, lop->lo_stp->ls_owner, 1820 1.2.6.2 yamt lckstp->ls_ownerlen))) { 1821 1.2.6.2 yamt if (other_lop) { 1822 1.2.6.2 yamt FREE((caddr_t)other_lop, M_NFSDLOCK); 1823 1.2.6.2 yamt other_lop = NULL; 1824 1.2.6.2 yamt } 1825 1.2.6.2 yamt ret = nfsrv_clientconflict(lop->lo_stp->ls_clp,&haslock,vp,p); 1826 1.2.6.2 yamt if (ret == 1) { 1827 1.2.6.2 yamt if (filestruct_locked != 0) { 1828 1.2.6.2 yamt /* Roll back local locks. */ 1829 1.2.6.2 yamt nfsrv_locallock_rollback(vp, lfp, p); 1830 1.2.6.2 yamt NFSLOCKSTATE(); 1831 1.2.6.2 yamt nfsrv_unlocklf(lfp); 1832 1.2.6.2 yamt NFSUNLOCKSTATE(); 1833 1.2.6.2 yamt } 1834 1.2.6.2 yamt /* 1835 1.2.6.2 yamt * nfsrv_clientconflict() unlocks state when it 1836 1.2.6.2 yamt * returns non-zero. 1837 1.2.6.2 yamt */ 1838 1.2.6.2 yamt lckstp = NULL; 1839 1.2.6.2 yamt goto tryagain; 1840 1.2.6.2 yamt } 1841 1.2.6.2 yamt /* 1842 1.2.6.2 yamt * Found a conflicting lock, so record the conflict and 1843 1.2.6.2 yamt * return the error. 1844 1.2.6.2 yamt */ 1845 1.2.6.2 yamt if (cfp != NULL && ret == 0) { 1846 1.2.6.2 yamt cfp->cl_clientid.lval[0]=lop->lo_stp->ls_stateid.other[0]; 1847 1.2.6.2 yamt cfp->cl_clientid.lval[1]=lop->lo_stp->ls_stateid.other[1]; 1848 1.2.6.2 yamt cfp->cl_first = lop->lo_first; 1849 1.2.6.2 yamt cfp->cl_end = lop->lo_end; 1850 1.2.6.2 yamt cfp->cl_flags = lop->lo_flags; 1851 1.2.6.2 yamt cfp->cl_ownerlen = lop->lo_stp->ls_ownerlen; 1852 1.2.6.2 yamt NFSBCOPY(lop->lo_stp->ls_owner, cfp->cl_owner, 1853 1.2.6.2 yamt cfp->cl_ownerlen); 1854 1.2.6.2 yamt } 1855 1.2.6.2 yamt if (ret == 2) 1856 1.2.6.2 yamt error = NFSERR_PERM; 1857 1.2.6.2 yamt else if (new_stp->ls_flags & NFSLCK_RECLAIM) 1858 1.2.6.2 yamt error = NFSERR_RECLAIMCONFLICT; 1859 1.2.6.2 yamt else if (new_stp->ls_flags & NFSLCK_CHECK) 1860 1.2.6.2 yamt error = NFSERR_LOCKED; 1861 1.2.6.2 yamt else 1862 1.2.6.2 yamt error = NFSERR_DENIED; 1863 1.2.6.2 yamt if (filestruct_locked != 0 && ret == 0) { 1864 1.2.6.2 yamt /* Roll back local locks. */ 1865 1.2.6.2 yamt NFSUNLOCKSTATE(); 1866 1.2.6.2 yamt nfsrv_locallock_rollback(vp, lfp, p); 1867 1.2.6.2 yamt NFSLOCKSTATE(); 1868 1.2.6.2 yamt nfsrv_unlocklf(lfp); 1869 1.2.6.2 yamt } 1870 1.2.6.2 yamt if (ret == 0) 1871 1.2.6.2 yamt NFSUNLOCKSTATE(); 1872 1.2.6.2 yamt goto out; 1873 1.2.6.2 yamt } 1874 1.2.6.2 yamt } 1875 1.2.6.2 yamt } 1876 1.2.6.2 yamt 1877 1.2.6.2 yamt /* 1878 1.2.6.2 yamt * We only get here if there was no lock that conflicted. 1879 1.2.6.2 yamt */ 1880 1.2.6.2 yamt if (new_stp->ls_flags & (NFSLCK_TEST | NFSLCK_CHECK)) { 1881 1.2.6.2 yamt NFSUNLOCKSTATE(); 1882 1.2.6.2 yamt goto out; 1883 1.2.6.2 yamt } 1884 1.2.6.2 yamt 1885 1.2.6.2 yamt /* 1886 1.2.6.2 yamt * We only get here when we are creating or modifying a lock. 1887 1.2.6.2 yamt * There are two variants: 1888 1.2.6.2 yamt * - exist_lock_owner where lock_owner exists 1889 1.2.6.2 yamt * - open_to_lock_owner with new lock_owner 1890 1.2.6.2 yamt */ 1891 1.2.6.2 yamt first = new_lop->lo_first; 1892 1.2.6.2 yamt end = new_lop->lo_end; 1893 1.2.6.2 yamt lock_flags = new_lop->lo_flags; 1894 1.2.6.2 yamt if (!(new_stp->ls_flags & NFSLCK_OPENTOLOCK)) { 1895 1.2.6.2 yamt nfsrv_updatelock(lckstp, new_lopp, &other_lop, lfp); 1896 1.2.6.2 yamt stateidp->seqid = ++(lckstp->ls_stateid.seqid); 1897 1.2.6.2 yamt stateidp->other[0] = lckstp->ls_stateid.other[0]; 1898 1.2.6.2 yamt stateidp->other[1] = lckstp->ls_stateid.other[1]; 1899 1.2.6.2 yamt stateidp->other[2] = lckstp->ls_stateid.other[2]; 1900 1.2.6.2 yamt } else { 1901 1.2.6.2 yamt /* 1902 1.2.6.2 yamt * The new open_to_lock_owner case. 1903 1.2.6.2 yamt * Link the new nfsstate into the lists. 1904 1.2.6.2 yamt */ 1905 1.2.6.2 yamt new_stp->ls_seq = new_stp->ls_opentolockseq; 1906 1.2.6.2 yamt nfsrvd_refcache(new_stp->ls_op); 1907 1.2.6.2 yamt stateidp->seqid = new_stp->ls_stateid.seqid = 1; 1908 1.2.6.2 yamt stateidp->other[0] = new_stp->ls_stateid.other[0] = 1909 1.2.6.2 yamt clp->lc_clientid.lval[0]; 1910 1.2.6.2 yamt stateidp->other[1] = new_stp->ls_stateid.other[1] = 1911 1.2.6.2 yamt clp->lc_clientid.lval[1]; 1912 1.2.6.2 yamt stateidp->other[2] = new_stp->ls_stateid.other[2] = 1913 1.2.6.2 yamt nfsrv_nextstateindex(clp); 1914 1.2.6.2 yamt new_stp->ls_clp = clp; 1915 1.2.6.2 yamt LIST_INIT(&new_stp->ls_lock); 1916 1.2.6.2 yamt new_stp->ls_openstp = stp; 1917 1.2.6.2 yamt new_stp->ls_lfp = lfp; 1918 1.2.6.2 yamt nfsrv_insertlock(new_lop, (struct nfslock *)new_stp, new_stp, 1919 1.2.6.2 yamt lfp); 1920 1.2.6.2 yamt LIST_INSERT_HEAD(NFSSTATEHASH(clp, new_stp->ls_stateid), 1921 1.2.6.2 yamt new_stp, ls_hash); 1922 1.2.6.2 yamt LIST_INSERT_HEAD(&stp->ls_open, new_stp, ls_list); 1923 1.2.6.2 yamt *new_lopp = NULL; 1924 1.2.6.2 yamt *new_stpp = NULL; 1925 1.2.6.2 yamt newnfsstats.srvlockowners++; 1926 1.2.6.2 yamt nfsrv_openpluslock++; 1927 1.2.6.2 yamt } 1928 1.2.6.2 yamt if (filestruct_locked != 0) { 1929 1.2.6.2 yamt NFSUNLOCKSTATE(); 1930 1.2.6.2 yamt nfsrv_locallock_commit(lfp, lock_flags, first, end); 1931 1.2.6.2 yamt NFSLOCKSTATE(); 1932 1.2.6.2 yamt nfsrv_unlocklf(lfp); 1933 1.2.6.2 yamt } 1934 1.2.6.2 yamt NFSUNLOCKSTATE(); 1935 1.2.6.2 yamt 1936 1.2.6.2 yamt out: 1937 1.2.6.2 yamt if (haslock) { 1938 1.2.6.2 yamt NFSLOCKV4ROOTMUTEX(); 1939 1.2.6.2 yamt nfsv4_unlock(&nfsv4rootfs_lock, 1); 1940 1.2.6.2 yamt NFSUNLOCKV4ROOTMUTEX(); 1941 1.2.6.2 yamt } 1942 1.2.6.2 yamt if (other_lop) 1943 1.2.6.2 yamt FREE((caddr_t)other_lop, M_NFSDLOCK); 1944 1.2.6.2 yamt NFSEXITCODE2(error, nd); 1945 1.2.6.2 yamt return (error); 1946 1.2.6.2 yamt } 1947 1.2.6.2 yamt 1948 1.2.6.2 yamt /* 1949 1.2.6.2 yamt * Check for state errors for Open. 1950 1.2.6.2 yamt * repstat is passed back out as an error if more critical errors 1951 1.2.6.2 yamt * are not detected. 1952 1.2.6.2 yamt */ 1953 1.2.6.2 yamt APPLESTATIC int 1954 1.2.6.2 yamt nfsrv_opencheck(nfsquad_t clientid, nfsv4stateid_t *stateidp, 1955 1.2.6.2 yamt struct nfsstate *new_stp, vnode_t vp, struct nfsrv_descript *nd, 1956 1.2.6.2 yamt NFSPROC_T *p, int repstat) 1957 1.2.6.2 yamt { 1958 1.2.6.2 yamt struct nfsstate *stp, *nstp; 1959 1.2.6.2 yamt struct nfsclient *clp; 1960 1.2.6.2 yamt struct nfsstate *ownerstp; 1961 1.2.6.2 yamt struct nfslockfile *lfp, *new_lfp; 1962 1.2.6.2 yamt int error = 0, haslock = 0, ret, readonly = 0, getfhret = 0; 1963 1.2.6.2 yamt 1964 1.2.6.2 yamt if ((new_stp->ls_flags & NFSLCK_SHAREBITS) == NFSLCK_READACCESS) 1965 1.2.6.2 yamt readonly = 1; 1966 1.2.6.2 yamt /* 1967 1.2.6.2 yamt * Check for restart conditions (client and server). 1968 1.2.6.2 yamt */ 1969 1.2.6.2 yamt error = nfsrv_checkrestart(clientid, new_stp->ls_flags, 1970 1.2.6.2 yamt &new_stp->ls_stateid, 0); 1971 1.2.6.2 yamt if (error) 1972 1.2.6.2 yamt goto out; 1973 1.2.6.2 yamt 1974 1.2.6.2 yamt /* 1975 1.2.6.2 yamt * Check for state resource limit exceeded. 1976 1.2.6.2 yamt * Technically this should be SMP protected, but the worst 1977 1.2.6.2 yamt * case error is "out by one or two" on the count when it 1978 1.2.6.2 yamt * returns NFSERR_RESOURCE and the limit is just a rather 1979 1.2.6.2 yamt * arbitrary high water mark, so no harm is done. 1980 1.2.6.2 yamt */ 1981 1.2.6.2 yamt if (nfsrv_openpluslock > NFSRV_V4STATELIMIT) { 1982 1.2.6.2 yamt error = NFSERR_RESOURCE; 1983 1.2.6.2 yamt goto out; 1984 1.2.6.2 yamt } 1985 1.2.6.2 yamt 1986 1.2.6.2 yamt tryagain: 1987 1.2.6.2 yamt MALLOC(new_lfp, struct nfslockfile *, sizeof (struct nfslockfile), 1988 1.2.6.2 yamt M_NFSDLOCKFILE, M_WAITOK); 1989 1.2.6.2 yamt if (vp) 1990 1.2.6.2 yamt getfhret = nfsrv_getlockfh(vp, new_stp->ls_flags, &new_lfp, 1991 1.2.6.2 yamt NULL, p); 1992 1.2.6.2 yamt NFSLOCKSTATE(); 1993 1.2.6.2 yamt /* 1994 1.2.6.2 yamt * Get the nfsclient structure. 1995 1.2.6.2 yamt */ 1996 1.2.6.2 yamt error = nfsrv_getclient(clientid, CLOPS_RENEW, &clp, 1997 1.2.6.2 yamt (nfsquad_t)((u_quad_t)0), NULL, p); 1998 1.2.6.2 yamt 1999 1.2.6.2 yamt /* 2000 1.2.6.2 yamt * Look up the open owner. See if it needs confirmation and 2001 1.2.6.2 yamt * check the seq#, as required. 2002 1.2.6.2 yamt */ 2003 1.2.6.2 yamt if (!error) 2004 1.2.6.2 yamt nfsrv_getowner(&clp->lc_open, new_stp, &ownerstp); 2005 1.2.6.2 yamt 2006 1.2.6.2 yamt if (!error && ownerstp) { 2007 1.2.6.2 yamt error = nfsrv_checkseqid(nd, new_stp->ls_seq, ownerstp, 2008 1.2.6.2 yamt new_stp->ls_op); 2009 1.2.6.2 yamt /* 2010 1.2.6.2 yamt * If the OpenOwner hasn't been confirmed, assume the 2011 1.2.6.2 yamt * old one was a replay and this one is ok. 2012 1.2.6.2 yamt * See: RFC3530 Sec. 14.2.18. 2013 1.2.6.2 yamt */ 2014 1.2.6.2 yamt if (error == NFSERR_BADSEQID && 2015 1.2.6.2 yamt (ownerstp->ls_flags & NFSLCK_NEEDSCONFIRM)) 2016 1.2.6.2 yamt error = 0; 2017 1.2.6.2 yamt } 2018 1.2.6.2 yamt 2019 1.2.6.2 yamt /* 2020 1.2.6.2 yamt * Check for grace. 2021 1.2.6.2 yamt */ 2022 1.2.6.2 yamt if (!error) 2023 1.2.6.2 yamt error = nfsrv_checkgrace(new_stp->ls_flags); 2024 1.2.6.2 yamt if ((new_stp->ls_flags & NFSLCK_RECLAIM) && !error && 2025 1.2.6.2 yamt nfsrv_checkstable(clp)) 2026 1.2.6.2 yamt error = NFSERR_NOGRACE; 2027 1.2.6.2 yamt 2028 1.2.6.2 yamt /* 2029 1.2.6.2 yamt * If none of the above errors occurred, let repstat be 2030 1.2.6.2 yamt * returned. 2031 1.2.6.2 yamt */ 2032 1.2.6.2 yamt if (repstat && !error) 2033 1.2.6.2 yamt error = repstat; 2034 1.2.6.2 yamt if (error) { 2035 1.2.6.2 yamt NFSUNLOCKSTATE(); 2036 1.2.6.2 yamt if (haslock) { 2037 1.2.6.2 yamt NFSLOCKV4ROOTMUTEX(); 2038 1.2.6.2 yamt nfsv4_unlock(&nfsv4rootfs_lock, 1); 2039 1.2.6.2 yamt NFSUNLOCKV4ROOTMUTEX(); 2040 1.2.6.2 yamt } 2041 1.2.6.2 yamt free((caddr_t)new_lfp, M_NFSDLOCKFILE); 2042 1.2.6.2 yamt goto out; 2043 1.2.6.2 yamt } 2044 1.2.6.2 yamt 2045 1.2.6.2 yamt /* 2046 1.2.6.2 yamt * If vp == NULL, the file doesn't exist yet, so return ok. 2047 1.2.6.2 yamt * (This always happens on the first pass, so haslock must be 0.) 2048 1.2.6.2 yamt */ 2049 1.2.6.2 yamt if (vp == NULL) { 2050 1.2.6.2 yamt NFSUNLOCKSTATE(); 2051 1.2.6.2 yamt FREE((caddr_t)new_lfp, M_NFSDLOCKFILE); 2052 1.2.6.2 yamt goto out; 2053 1.2.6.2 yamt } 2054 1.2.6.2 yamt 2055 1.2.6.2 yamt /* 2056 1.2.6.2 yamt * Get the structure for the underlying file. 2057 1.2.6.2 yamt */ 2058 1.2.6.2 yamt if (getfhret) 2059 1.2.6.2 yamt error = getfhret; 2060 1.2.6.2 yamt else 2061 1.2.6.2 yamt error = nfsrv_getlockfile(new_stp->ls_flags, &new_lfp, &lfp, 2062 1.2.6.2 yamt NULL, 0); 2063 1.2.6.2 yamt if (new_lfp) 2064 1.2.6.2 yamt FREE((caddr_t)new_lfp, M_NFSDLOCKFILE); 2065 1.2.6.2 yamt if (error) { 2066 1.2.6.2 yamt NFSUNLOCKSTATE(); 2067 1.2.6.2 yamt if (haslock) { 2068 1.2.6.2 yamt NFSLOCKV4ROOTMUTEX(); 2069 1.2.6.2 yamt nfsv4_unlock(&nfsv4rootfs_lock, 1); 2070 1.2.6.2 yamt NFSUNLOCKV4ROOTMUTEX(); 2071 1.2.6.2 yamt } 2072 1.2.6.2 yamt goto out; 2073 1.2.6.2 yamt } 2074 1.2.6.2 yamt 2075 1.2.6.2 yamt /* 2076 1.2.6.2 yamt * Search for a conflicting open/share. 2077 1.2.6.2 yamt */ 2078 1.2.6.2 yamt if (new_stp->ls_flags & NFSLCK_DELEGCUR) { 2079 1.2.6.2 yamt /* 2080 1.2.6.2 yamt * For Delegate_Cur, search for the matching Delegation, 2081 1.2.6.2 yamt * which indicates no conflict. 2082 1.2.6.2 yamt * An old delegation should have been recovered by the 2083 1.2.6.2 yamt * client doing a Claim_DELEGATE_Prev, so I won't let 2084 1.2.6.2 yamt * it match and return NFSERR_EXPIRED. Should I let it 2085 1.2.6.2 yamt * match? 2086 1.2.6.2 yamt */ 2087 1.2.6.2 yamt LIST_FOREACH(stp, &lfp->lf_deleg, ls_file) { 2088 1.2.6.2 yamt if (!(stp->ls_flags & NFSLCK_OLDDELEG) && 2089 1.2.6.2 yamt stateidp->seqid == stp->ls_stateid.seqid && 2090 1.2.6.2 yamt !NFSBCMP(stateidp->other, stp->ls_stateid.other, 2091 1.2.6.2 yamt NFSX_STATEIDOTHER)) 2092 1.2.6.2 yamt break; 2093 1.2.6.2 yamt } 2094 1.2.6.2 yamt if (stp == NULL || 2095 1.2.6.2 yamt ((new_stp->ls_flags & NFSLCK_WRITEACCESS) && 2096 1.2.6.2 yamt (stp->ls_flags & NFSLCK_DELEGREAD))) { 2097 1.2.6.2 yamt NFSUNLOCKSTATE(); 2098 1.2.6.2 yamt if (haslock) { 2099 1.2.6.2 yamt NFSLOCKV4ROOTMUTEX(); 2100 1.2.6.2 yamt nfsv4_unlock(&nfsv4rootfs_lock, 1); 2101 1.2.6.2 yamt NFSUNLOCKV4ROOTMUTEX(); 2102 1.2.6.2 yamt } 2103 1.2.6.2 yamt error = NFSERR_EXPIRED; 2104 1.2.6.2 yamt goto out; 2105 1.2.6.2 yamt } 2106 1.2.6.2 yamt } 2107 1.2.6.2 yamt 2108 1.2.6.2 yamt /* 2109 1.2.6.2 yamt * Check for access/deny bit conflicts. I check for the same 2110 1.2.6.2 yamt * owner as well, in case the client didn't bother. 2111 1.2.6.2 yamt */ 2112 1.2.6.2 yamt LIST_FOREACH(stp, &lfp->lf_open, ls_file) { 2113 1.2.6.2 yamt if (!(new_stp->ls_flags & NFSLCK_DELEGCUR) && 2114 1.2.6.2 yamt (((new_stp->ls_flags & NFSLCK_ACCESSBITS) & 2115 1.2.6.2 yamt ((stp->ls_flags>>NFSLCK_SHIFT) & NFSLCK_ACCESSBITS))|| 2116 1.2.6.2 yamt ((stp->ls_flags & NFSLCK_ACCESSBITS) & 2117 1.2.6.2 yamt ((new_stp->ls_flags>>NFSLCK_SHIFT)&NFSLCK_ACCESSBITS)))){ 2118 1.2.6.2 yamt ret = nfsrv_clientconflict(stp->ls_clp,&haslock,vp,p); 2119 1.2.6.2 yamt if (ret == 1) { 2120 1.2.6.2 yamt /* 2121 1.2.6.2 yamt * nfsrv_clientconflict() unlocks 2122 1.2.6.2 yamt * state when it returns non-zero. 2123 1.2.6.2 yamt */ 2124 1.2.6.2 yamt goto tryagain; 2125 1.2.6.2 yamt } 2126 1.2.6.2 yamt if (ret == 2) 2127 1.2.6.2 yamt error = NFSERR_PERM; 2128 1.2.6.2 yamt else if (new_stp->ls_flags & NFSLCK_RECLAIM) 2129 1.2.6.2 yamt error = NFSERR_RECLAIMCONFLICT; 2130 1.2.6.2 yamt else 2131 1.2.6.2 yamt error = NFSERR_SHAREDENIED; 2132 1.2.6.2 yamt if (ret == 0) 2133 1.2.6.2 yamt NFSUNLOCKSTATE(); 2134 1.2.6.2 yamt if (haslock) { 2135 1.2.6.2 yamt NFSLOCKV4ROOTMUTEX(); 2136 1.2.6.2 yamt nfsv4_unlock(&nfsv4rootfs_lock, 1); 2137 1.2.6.2 yamt NFSUNLOCKV4ROOTMUTEX(); 2138 1.2.6.2 yamt } 2139 1.2.6.2 yamt goto out; 2140 1.2.6.2 yamt } 2141 1.2.6.2 yamt } 2142 1.2.6.2 yamt 2143 1.2.6.2 yamt /* 2144 1.2.6.2 yamt * Check for a conflicting delegation. If one is found, call 2145 1.2.6.2 yamt * nfsrv_delegconflict() to handle it. If the v4root lock hasn't 2146 1.2.6.2 yamt * been set yet, it will get the lock. Otherwise, it will recall 2147 1.2.6.2 yamt * the delegation. Then, we try try again... 2148 1.2.6.2 yamt * (If NFSLCK_DELEGCUR is set, it has a delegation, so there 2149 1.2.6.2 yamt * isn't a conflict.) 2150 1.2.6.2 yamt * I currently believe the conflict algorithm to be: 2151 1.2.6.2 yamt * For Open with Read Access and Deny None 2152 1.2.6.2 yamt * - there is a conflict iff a different client has a write delegation 2153 1.2.6.2 yamt * For Open with other Write Access or any Deny except None 2154 1.2.6.2 yamt * - there is a conflict if a different client has any delegation 2155 1.2.6.2 yamt * - there is a conflict if the same client has a read delegation 2156 1.2.6.2 yamt * (The current concensus is that this last case should be 2157 1.2.6.2 yamt * considered a conflict since the client with a read delegation 2158 1.2.6.2 yamt * could have done an Open with ReadAccess and WriteDeny 2159 1.2.6.2 yamt * locally and then not have checked for the WriteDeny.) 2160 1.2.6.2 yamt * Don't check for a Reclaim, since that will be dealt with 2161 1.2.6.2 yamt * by nfsrv_openctrl(). 2162 1.2.6.2 yamt */ 2163 1.2.6.2 yamt if (!(new_stp->ls_flags & 2164 1.2.6.2 yamt (NFSLCK_DELEGPREV | NFSLCK_DELEGCUR | NFSLCK_RECLAIM))) { 2165 1.2.6.2 yamt stp = LIST_FIRST(&lfp->lf_deleg); 2166 1.2.6.2 yamt while (stp != NULL) { 2167 1.2.6.2 yamt nstp = LIST_NEXT(stp, ls_file); 2168 1.2.6.2 yamt if ((readonly && stp->ls_clp != clp && 2169 1.2.6.2 yamt (stp->ls_flags & NFSLCK_DELEGWRITE)) || 2170 1.2.6.2 yamt (!readonly && (stp->ls_clp != clp || 2171 1.2.6.2 yamt (stp->ls_flags & NFSLCK_DELEGREAD)))) { 2172 1.2.6.2 yamt ret = nfsrv_delegconflict(stp, &haslock, p, vp); 2173 1.2.6.2 yamt if (ret) { 2174 1.2.6.2 yamt /* 2175 1.2.6.2 yamt * nfsrv_delegconflict() unlocks state 2176 1.2.6.2 yamt * when it returns non-zero. 2177 1.2.6.2 yamt */ 2178 1.2.6.2 yamt if (ret == -1) 2179 1.2.6.2 yamt goto tryagain; 2180 1.2.6.2 yamt error = ret; 2181 1.2.6.2 yamt goto out; 2182 1.2.6.2 yamt } 2183 1.2.6.2 yamt } 2184 1.2.6.2 yamt stp = nstp; 2185 1.2.6.2 yamt } 2186 1.2.6.2 yamt } 2187 1.2.6.2 yamt NFSUNLOCKSTATE(); 2188 1.2.6.2 yamt if (haslock) { 2189 1.2.6.2 yamt NFSLOCKV4ROOTMUTEX(); 2190 1.2.6.2 yamt nfsv4_unlock(&nfsv4rootfs_lock, 1); 2191 1.2.6.2 yamt NFSUNLOCKV4ROOTMUTEX(); 2192 1.2.6.2 yamt } 2193 1.2.6.2 yamt 2194 1.2.6.2 yamt out: 2195 1.2.6.2 yamt NFSEXITCODE2(error, nd); 2196 1.2.6.2 yamt return (error); 2197 1.2.6.2 yamt } 2198 1.2.6.2 yamt 2199 1.2.6.2 yamt /* 2200 1.2.6.2 yamt * Open control function to create/update open state for an open. 2201 1.2.6.2 yamt */ 2202 1.2.6.2 yamt APPLESTATIC int 2203 1.2.6.2 yamt nfsrv_openctrl(struct nfsrv_descript *nd, vnode_t vp, 2204 1.2.6.2 yamt struct nfsstate **new_stpp, nfsquad_t clientid, nfsv4stateid_t *stateidp, 2205 1.2.6.2 yamt nfsv4stateid_t *delegstateidp, u_int32_t *rflagsp, struct nfsexstuff *exp, 2206 1.2.6.2 yamt NFSPROC_T *p, u_quad_t filerev) 2207 1.2.6.2 yamt { 2208 1.2.6.2 yamt struct nfsstate *new_stp = *new_stpp; 2209 1.2.6.2 yamt struct nfsstate *stp, *nstp; 2210 1.2.6.2 yamt struct nfsstate *openstp = NULL, *new_open, *ownerstp, *new_deleg; 2211 1.2.6.2 yamt struct nfslockfile *lfp, *new_lfp; 2212 1.2.6.2 yamt struct nfsclient *clp; 2213 1.2.6.2 yamt int error = 0, haslock = 0, ret, delegate = 1, writedeleg = 1; 2214 1.2.6.2 yamt int readonly = 0, cbret = 1, getfhret = 0; 2215 1.2.6.2 yamt 2216 1.2.6.2 yamt if ((new_stp->ls_flags & NFSLCK_SHAREBITS) == NFSLCK_READACCESS) 2217 1.2.6.2 yamt readonly = 1; 2218 1.2.6.2 yamt /* 2219 1.2.6.2 yamt * Check for restart conditions (client and server). 2220 1.2.6.2 yamt * (Paranoia, should have been detected by nfsrv_opencheck().) 2221 1.2.6.2 yamt * If an error does show up, return NFSERR_EXPIRED, since the 2222 1.2.6.2 yamt * the seqid# has already been incremented. 2223 1.2.6.2 yamt */ 2224 1.2.6.2 yamt error = nfsrv_checkrestart(clientid, new_stp->ls_flags, 2225 1.2.6.2 yamt &new_stp->ls_stateid, 0); 2226 1.2.6.2 yamt if (error) { 2227 1.2.6.2 yamt printf("Nfsd: openctrl unexpected restart err=%d\n", 2228 1.2.6.2 yamt error); 2229 1.2.6.2 yamt error = NFSERR_EXPIRED; 2230 1.2.6.2 yamt goto out; 2231 1.2.6.2 yamt } 2232 1.2.6.2 yamt 2233 1.2.6.2 yamt tryagain: 2234 1.2.6.2 yamt MALLOC(new_lfp, struct nfslockfile *, sizeof (struct nfslockfile), 2235 1.2.6.2 yamt M_NFSDLOCKFILE, M_WAITOK); 2236 1.2.6.2 yamt MALLOC(new_open, struct nfsstate *, sizeof (struct nfsstate), 2237 1.2.6.2 yamt M_NFSDSTATE, M_WAITOK); 2238 1.2.6.2 yamt MALLOC(new_deleg, struct nfsstate *, sizeof (struct nfsstate), 2239 1.2.6.2 yamt M_NFSDSTATE, M_WAITOK); 2240 1.2.6.2 yamt getfhret = nfsrv_getlockfh(vp, new_stp->ls_flags, &new_lfp, 2241 1.2.6.2 yamt NULL, p); 2242 1.2.6.2 yamt NFSLOCKSTATE(); 2243 1.2.6.2 yamt /* 2244 1.2.6.2 yamt * Get the client structure. Since the linked lists could be changed 2245 1.2.6.2 yamt * by other nfsd processes if this process does a tsleep(), one of 2246 1.2.6.2 yamt * two things must be done. 2247 1.2.6.2 yamt * 1 - don't tsleep() 2248 1.2.6.2 yamt * or 2249 1.2.6.2 yamt * 2 - get the nfsv4_lock() { indicated by haslock == 1 } 2250 1.2.6.2 yamt * before using the lists, since this lock stops the other 2251 1.2.6.2 yamt * nfsd. This should only be used for rare cases, since it 2252 1.2.6.2 yamt * essentially single threads the nfsd. 2253 1.2.6.2 yamt * At this time, it is only done for cases where the stable 2254 1.2.6.2 yamt * storage file must be written prior to completion of state 2255 1.2.6.2 yamt * expiration. 2256 1.2.6.2 yamt */ 2257 1.2.6.2 yamt error = nfsrv_getclient(clientid, CLOPS_RENEW, &clp, 2258 1.2.6.2 yamt (nfsquad_t)((u_quad_t)0), NULL, p); 2259 1.2.6.2 yamt if (!error && (clp->lc_flags & LCL_NEEDSCBNULL) && 2260 1.2.6.2 yamt clp->lc_program) { 2261 1.2.6.2 yamt /* 2262 1.2.6.2 yamt * This happens on the first open for a client 2263 1.2.6.2 yamt * that supports callbacks. 2264 1.2.6.2 yamt */ 2265 1.2.6.2 yamt NFSUNLOCKSTATE(); 2266 1.2.6.2 yamt /* 2267 1.2.6.2 yamt * Although nfsrv_docallback() will sleep, clp won't 2268 1.2.6.2 yamt * go away, since they are only removed when the 2269 1.2.6.2 yamt * nfsv4_lock() has blocked the nfsd threads. The 2270 1.2.6.2 yamt * fields in clp can change, but having multiple 2271 1.2.6.2 yamt * threads do this Null callback RPC should be 2272 1.2.6.2 yamt * harmless. 2273 1.2.6.2 yamt */ 2274 1.2.6.2 yamt cbret = nfsrv_docallback(clp, NFSV4PROC_CBNULL, 2275 1.2.6.2 yamt NULL, 0, NULL, NULL, NULL, p); 2276 1.2.6.2 yamt NFSLOCKSTATE(); 2277 1.2.6.2 yamt clp->lc_flags &= ~LCL_NEEDSCBNULL; 2278 1.2.6.2 yamt if (!cbret) 2279 1.2.6.2 yamt clp->lc_flags |= LCL_CALLBACKSON; 2280 1.2.6.2 yamt } 2281 1.2.6.2 yamt 2282 1.2.6.2 yamt /* 2283 1.2.6.2 yamt * Look up the open owner. See if it needs confirmation and 2284 1.2.6.2 yamt * check the seq#, as required. 2285 1.2.6.2 yamt */ 2286 1.2.6.2 yamt if (!error) 2287 1.2.6.2 yamt nfsrv_getowner(&clp->lc_open, new_stp, &ownerstp); 2288 1.2.6.2 yamt 2289 1.2.6.2 yamt if (error) { 2290 1.2.6.2 yamt NFSUNLOCKSTATE(); 2291 1.2.6.2 yamt printf("Nfsd: openctrl unexpected state err=%d\n", 2292 1.2.6.2 yamt error); 2293 1.2.6.2 yamt free((caddr_t)new_lfp, M_NFSDLOCKFILE); 2294 1.2.6.2 yamt free((caddr_t)new_open, M_NFSDSTATE); 2295 1.2.6.2 yamt free((caddr_t)new_deleg, M_NFSDSTATE); 2296 1.2.6.2 yamt if (haslock) { 2297 1.2.6.2 yamt NFSLOCKV4ROOTMUTEX(); 2298 1.2.6.2 yamt nfsv4_unlock(&nfsv4rootfs_lock, 1); 2299 1.2.6.2 yamt NFSUNLOCKV4ROOTMUTEX(); 2300 1.2.6.2 yamt } 2301 1.2.6.2 yamt error = NFSERR_EXPIRED; 2302 1.2.6.2 yamt goto out; 2303 1.2.6.2 yamt } 2304 1.2.6.2 yamt 2305 1.2.6.2 yamt if (new_stp->ls_flags & NFSLCK_RECLAIM) 2306 1.2.6.2 yamt nfsrv_markstable(clp); 2307 1.2.6.2 yamt 2308 1.2.6.2 yamt /* 2309 1.2.6.2 yamt * Get the structure for the underlying file. 2310 1.2.6.2 yamt */ 2311 1.2.6.2 yamt if (getfhret) 2312 1.2.6.2 yamt error = getfhret; 2313 1.2.6.2 yamt else 2314 1.2.6.2 yamt error = nfsrv_getlockfile(new_stp->ls_flags, &new_lfp, &lfp, 2315 1.2.6.2 yamt NULL, 0); 2316 1.2.6.2 yamt if (new_lfp) 2317 1.2.6.2 yamt FREE((caddr_t)new_lfp, M_NFSDLOCKFILE); 2318 1.2.6.2 yamt if (error) { 2319 1.2.6.2 yamt NFSUNLOCKSTATE(); 2320 1.2.6.2 yamt printf("Nfsd openctrl unexpected getlockfile err=%d\n", 2321 1.2.6.2 yamt error); 2322 1.2.6.2 yamt free((caddr_t)new_open, M_NFSDSTATE); 2323 1.2.6.2 yamt free((caddr_t)new_deleg, M_NFSDSTATE); 2324 1.2.6.2 yamt if (haslock) { 2325 1.2.6.2 yamt NFSLOCKV4ROOTMUTEX(); 2326 1.2.6.2 yamt nfsv4_unlock(&nfsv4rootfs_lock, 1); 2327 1.2.6.2 yamt NFSUNLOCKV4ROOTMUTEX(); 2328 1.2.6.2 yamt } 2329 1.2.6.2 yamt goto out; 2330 1.2.6.2 yamt } 2331 1.2.6.2 yamt 2332 1.2.6.2 yamt /* 2333 1.2.6.2 yamt * Search for a conflicting open/share. 2334 1.2.6.2 yamt */ 2335 1.2.6.2 yamt if (new_stp->ls_flags & NFSLCK_DELEGCUR) { 2336 1.2.6.2 yamt /* 2337 1.2.6.2 yamt * For Delegate_Cur, search for the matching Delegation, 2338 1.2.6.2 yamt * which indicates no conflict. 2339 1.2.6.2 yamt * An old delegation should have been recovered by the 2340 1.2.6.2 yamt * client doing a Claim_DELEGATE_Prev, so I won't let 2341 1.2.6.2 yamt * it match and return NFSERR_EXPIRED. Should I let it 2342 1.2.6.2 yamt * match? 2343 1.2.6.2 yamt */ 2344 1.2.6.2 yamt LIST_FOREACH(stp, &lfp->lf_deleg, ls_file) { 2345 1.2.6.2 yamt if (!(stp->ls_flags & NFSLCK_OLDDELEG) && 2346 1.2.6.2 yamt stateidp->seqid == stp->ls_stateid.seqid && 2347 1.2.6.2 yamt !NFSBCMP(stateidp->other, stp->ls_stateid.other, 2348 1.2.6.2 yamt NFSX_STATEIDOTHER)) 2349 1.2.6.2 yamt break; 2350 1.2.6.2 yamt } 2351 1.2.6.2 yamt if (stp == NULL || 2352 1.2.6.2 yamt ((new_stp->ls_flags & NFSLCK_WRITEACCESS) && 2353 1.2.6.2 yamt (stp->ls_flags & NFSLCK_DELEGREAD))) { 2354 1.2.6.2 yamt NFSUNLOCKSTATE(); 2355 1.2.6.2 yamt printf("Nfsd openctrl unexpected expiry\n"); 2356 1.2.6.2 yamt free((caddr_t)new_open, M_NFSDSTATE); 2357 1.2.6.2 yamt free((caddr_t)new_deleg, M_NFSDSTATE); 2358 1.2.6.2 yamt if (haslock) { 2359 1.2.6.2 yamt NFSLOCKV4ROOTMUTEX(); 2360 1.2.6.2 yamt nfsv4_unlock(&nfsv4rootfs_lock, 1); 2361 1.2.6.2 yamt NFSUNLOCKV4ROOTMUTEX(); 2362 1.2.6.2 yamt } 2363 1.2.6.2 yamt error = NFSERR_EXPIRED; 2364 1.2.6.2 yamt goto out; 2365 1.2.6.2 yamt } 2366 1.2.6.2 yamt 2367 1.2.6.2 yamt /* 2368 1.2.6.2 yamt * Don't issue a Delegation, since one already exists and 2369 1.2.6.2 yamt * delay delegation timeout, as required. 2370 1.2.6.2 yamt */ 2371 1.2.6.2 yamt delegate = 0; 2372 1.2.6.2 yamt nfsrv_delaydelegtimeout(stp); 2373 1.2.6.2 yamt } 2374 1.2.6.2 yamt 2375 1.2.6.2 yamt /* 2376 1.2.6.2 yamt * Check for access/deny bit conflicts. I also check for the 2377 1.2.6.2 yamt * same owner, since the client might not have bothered to check. 2378 1.2.6.2 yamt * Also, note an open for the same file and owner, if found, 2379 1.2.6.2 yamt * which is all we do here for Delegate_Cur, since conflict 2380 1.2.6.2 yamt * checking is already done. 2381 1.2.6.2 yamt */ 2382 1.2.6.2 yamt LIST_FOREACH(stp, &lfp->lf_open, ls_file) { 2383 1.2.6.2 yamt if (ownerstp && stp->ls_openowner == ownerstp) 2384 1.2.6.2 yamt openstp = stp; 2385 1.2.6.2 yamt if (!(new_stp->ls_flags & NFSLCK_DELEGCUR)) { 2386 1.2.6.2 yamt /* 2387 1.2.6.2 yamt * If another client has the file open, the only 2388 1.2.6.2 yamt * delegation that can be issued is a Read delegation 2389 1.2.6.2 yamt * and only if it is a Read open with Deny none. 2390 1.2.6.2 yamt */ 2391 1.2.6.2 yamt if (clp != stp->ls_clp) { 2392 1.2.6.2 yamt if ((stp->ls_flags & NFSLCK_SHAREBITS) == 2393 1.2.6.2 yamt NFSLCK_READACCESS) 2394 1.2.6.2 yamt writedeleg = 0; 2395 1.2.6.2 yamt else 2396 1.2.6.2 yamt delegate = 0; 2397 1.2.6.2 yamt } 2398 1.2.6.2 yamt if(((new_stp->ls_flags & NFSLCK_ACCESSBITS) & 2399 1.2.6.2 yamt ((stp->ls_flags>>NFSLCK_SHIFT) & NFSLCK_ACCESSBITS))|| 2400 1.2.6.2 yamt ((stp->ls_flags & NFSLCK_ACCESSBITS) & 2401 1.2.6.2 yamt ((new_stp->ls_flags>>NFSLCK_SHIFT)&NFSLCK_ACCESSBITS))){ 2402 1.2.6.2 yamt ret = nfsrv_clientconflict(stp->ls_clp,&haslock,vp,p); 2403 1.2.6.2 yamt if (ret == 1) { 2404 1.2.6.2 yamt /* 2405 1.2.6.2 yamt * nfsrv_clientconflict() unlocks state 2406 1.2.6.2 yamt * when it returns non-zero. 2407 1.2.6.2 yamt */ 2408 1.2.6.2 yamt free((caddr_t)new_open, M_NFSDSTATE); 2409 1.2.6.2 yamt free((caddr_t)new_deleg, M_NFSDSTATE); 2410 1.2.6.2 yamt openstp = NULL; 2411 1.2.6.2 yamt goto tryagain; 2412 1.2.6.2 yamt } 2413 1.2.6.2 yamt if (ret == 2) 2414 1.2.6.2 yamt error = NFSERR_PERM; 2415 1.2.6.2 yamt else if (new_stp->ls_flags & NFSLCK_RECLAIM) 2416 1.2.6.2 yamt error = NFSERR_RECLAIMCONFLICT; 2417 1.2.6.2 yamt else 2418 1.2.6.2 yamt error = NFSERR_SHAREDENIED; 2419 1.2.6.2 yamt if (ret == 0) 2420 1.2.6.2 yamt NFSUNLOCKSTATE(); 2421 1.2.6.2 yamt if (haslock) { 2422 1.2.6.2 yamt NFSLOCKV4ROOTMUTEX(); 2423 1.2.6.2 yamt nfsv4_unlock(&nfsv4rootfs_lock, 1); 2424 1.2.6.2 yamt NFSUNLOCKV4ROOTMUTEX(); 2425 1.2.6.2 yamt } 2426 1.2.6.2 yamt free((caddr_t)new_open, M_NFSDSTATE); 2427 1.2.6.2 yamt free((caddr_t)new_deleg, M_NFSDSTATE); 2428 1.2.6.2 yamt printf("nfsd openctrl unexpected client cnfl\n"); 2429 1.2.6.2 yamt goto out; 2430 1.2.6.2 yamt } 2431 1.2.6.2 yamt } 2432 1.2.6.2 yamt } 2433 1.2.6.2 yamt 2434 1.2.6.2 yamt /* 2435 1.2.6.2 yamt * Check for a conflicting delegation. If one is found, call 2436 1.2.6.2 yamt * nfsrv_delegconflict() to handle it. If the v4root lock hasn't 2437 1.2.6.2 yamt * been set yet, it will get the lock. Otherwise, it will recall 2438 1.2.6.2 yamt * the delegation. Then, we try try again... 2439 1.2.6.2 yamt * (If NFSLCK_DELEGCUR is set, it has a delegation, so there 2440 1.2.6.2 yamt * isn't a conflict.) 2441 1.2.6.2 yamt * I currently believe the conflict algorithm to be: 2442 1.2.6.2 yamt * For Open with Read Access and Deny None 2443 1.2.6.2 yamt * - there is a conflict iff a different client has a write delegation 2444 1.2.6.2 yamt * For Open with other Write Access or any Deny except None 2445 1.2.6.2 yamt * - there is a conflict if a different client has any delegation 2446 1.2.6.2 yamt * - there is a conflict if the same client has a read delegation 2447 1.2.6.2 yamt * (The current concensus is that this last case should be 2448 1.2.6.2 yamt * considered a conflict since the client with a read delegation 2449 1.2.6.2 yamt * could have done an Open with ReadAccess and WriteDeny 2450 1.2.6.2 yamt * locally and then not have checked for the WriteDeny.) 2451 1.2.6.2 yamt */ 2452 1.2.6.2 yamt if (!(new_stp->ls_flags & (NFSLCK_DELEGPREV | NFSLCK_DELEGCUR))) { 2453 1.2.6.2 yamt stp = LIST_FIRST(&lfp->lf_deleg); 2454 1.2.6.2 yamt while (stp != NULL) { 2455 1.2.6.2 yamt nstp = LIST_NEXT(stp, ls_file); 2456 1.2.6.2 yamt if (stp->ls_clp != clp && (stp->ls_flags & NFSLCK_DELEGREAD)) 2457 1.2.6.2 yamt writedeleg = 0; 2458 1.2.6.2 yamt else 2459 1.2.6.2 yamt delegate = 0; 2460 1.2.6.2 yamt if ((readonly && stp->ls_clp != clp && 2461 1.2.6.2 yamt (stp->ls_flags & NFSLCK_DELEGWRITE)) || 2462 1.2.6.2 yamt (!readonly && (stp->ls_clp != clp || 2463 1.2.6.2 yamt (stp->ls_flags & NFSLCK_DELEGREAD)))) { 2464 1.2.6.2 yamt if (new_stp->ls_flags & NFSLCK_RECLAIM) { 2465 1.2.6.2 yamt delegate = 2; 2466 1.2.6.2 yamt } else { 2467 1.2.6.2 yamt ret = nfsrv_delegconflict(stp, &haslock, p, vp); 2468 1.2.6.2 yamt if (ret) { 2469 1.2.6.2 yamt /* 2470 1.2.6.2 yamt * nfsrv_delegconflict() unlocks state 2471 1.2.6.2 yamt * when it returns non-zero. 2472 1.2.6.2 yamt */ 2473 1.2.6.2 yamt printf("Nfsd openctrl unexpected deleg cnfl\n"); 2474 1.2.6.2 yamt free((caddr_t)new_open, M_NFSDSTATE); 2475 1.2.6.2 yamt free((caddr_t)new_deleg, M_NFSDSTATE); 2476 1.2.6.2 yamt if (ret == -1) { 2477 1.2.6.2 yamt openstp = NULL; 2478 1.2.6.2 yamt goto tryagain; 2479 1.2.6.2 yamt } 2480 1.2.6.2 yamt error = ret; 2481 1.2.6.2 yamt goto out; 2482 1.2.6.2 yamt } 2483 1.2.6.2 yamt } 2484 1.2.6.2 yamt } 2485 1.2.6.2 yamt stp = nstp; 2486 1.2.6.2 yamt } 2487 1.2.6.2 yamt } 2488 1.2.6.2 yamt 2489 1.2.6.2 yamt /* 2490 1.2.6.2 yamt * We only get here if there was no open that conflicted. 2491 1.2.6.2 yamt * If an open for the owner exists, or in the access/deny bits. 2492 1.2.6.2 yamt * Otherwise it is a new open. If the open_owner hasn't been 2493 1.2.6.2 yamt * confirmed, replace the open with the new one needing confirmation, 2494 1.2.6.2 yamt * otherwise add the open. 2495 1.2.6.2 yamt */ 2496 1.2.6.2 yamt if (new_stp->ls_flags & NFSLCK_DELEGPREV) { 2497 1.2.6.2 yamt /* 2498 1.2.6.2 yamt * Handle NFSLCK_DELEGPREV by searching the old delegations for 2499 1.2.6.2 yamt * a match. If found, just move the old delegation to the current 2500 1.2.6.2 yamt * delegation list and issue open. If not found, return 2501 1.2.6.2 yamt * NFSERR_EXPIRED. 2502 1.2.6.2 yamt */ 2503 1.2.6.2 yamt LIST_FOREACH(stp, &clp->lc_olddeleg, ls_list) { 2504 1.2.6.2 yamt if (stp->ls_lfp == lfp) { 2505 1.2.6.2 yamt /* Found it */ 2506 1.2.6.2 yamt if (stp->ls_clp != clp) 2507 1.2.6.2 yamt panic("olddeleg clp"); 2508 1.2.6.2 yamt LIST_REMOVE(stp, ls_list); 2509 1.2.6.2 yamt LIST_REMOVE(stp, ls_hash); 2510 1.2.6.2 yamt stp->ls_flags &= ~NFSLCK_OLDDELEG; 2511 1.2.6.2 yamt stp->ls_stateid.seqid = delegstateidp->seqid = 0; 2512 1.2.6.2 yamt stp->ls_stateid.other[0] = delegstateidp->other[0] = 2513 1.2.6.2 yamt clp->lc_clientid.lval[0]; 2514 1.2.6.2 yamt stp->ls_stateid.other[1] = delegstateidp->other[1] = 2515 1.2.6.2 yamt clp->lc_clientid.lval[1]; 2516 1.2.6.2 yamt stp->ls_stateid.other[2] = delegstateidp->other[2] = 2517 1.2.6.2 yamt nfsrv_nextstateindex(clp); 2518 1.2.6.2 yamt stp->ls_compref = nd->nd_compref; 2519 1.2.6.2 yamt LIST_INSERT_HEAD(&clp->lc_deleg, stp, ls_list); 2520 1.2.6.2 yamt LIST_INSERT_HEAD(NFSSTATEHASH(clp, 2521 1.2.6.2 yamt stp->ls_stateid), stp, ls_hash); 2522 1.2.6.2 yamt if (stp->ls_flags & NFSLCK_DELEGWRITE) 2523 1.2.6.2 yamt *rflagsp |= NFSV4OPEN_WRITEDELEGATE; 2524 1.2.6.2 yamt else 2525 1.2.6.2 yamt *rflagsp |= NFSV4OPEN_READDELEGATE; 2526 1.2.6.2 yamt clp->lc_delegtime = NFSD_MONOSEC + 2527 1.2.6.2 yamt nfsrv_lease + NFSRV_LEASEDELTA; 2528 1.2.6.2 yamt 2529 1.2.6.2 yamt /* 2530 1.2.6.2 yamt * Now, do the associated open. 2531 1.2.6.2 yamt */ 2532 1.2.6.2 yamt new_open->ls_stateid.seqid = 0; 2533 1.2.6.2 yamt new_open->ls_stateid.other[0] = clp->lc_clientid.lval[0]; 2534 1.2.6.2 yamt new_open->ls_stateid.other[1] = clp->lc_clientid.lval[1]; 2535 1.2.6.2 yamt new_open->ls_stateid.other[2] = nfsrv_nextstateindex(clp); 2536 1.2.6.2 yamt new_open->ls_flags = (new_stp->ls_flags&NFSLCK_DENYBITS)| 2537 1.2.6.2 yamt NFSLCK_OPEN; 2538 1.2.6.2 yamt if (stp->ls_flags & NFSLCK_DELEGWRITE) 2539 1.2.6.2 yamt new_open->ls_flags |= (NFSLCK_READACCESS | 2540 1.2.6.2 yamt NFSLCK_WRITEACCESS); 2541 1.2.6.2 yamt else 2542 1.2.6.2 yamt new_open->ls_flags |= NFSLCK_READACCESS; 2543 1.2.6.2 yamt new_open->ls_uid = new_stp->ls_uid; 2544 1.2.6.2 yamt new_open->ls_lfp = lfp; 2545 1.2.6.2 yamt new_open->ls_clp = clp; 2546 1.2.6.2 yamt LIST_INIT(&new_open->ls_open); 2547 1.2.6.2 yamt LIST_INSERT_HEAD(&lfp->lf_open, new_open, ls_file); 2548 1.2.6.2 yamt LIST_INSERT_HEAD(NFSSTATEHASH(clp, new_open->ls_stateid), 2549 1.2.6.2 yamt new_open, ls_hash); 2550 1.2.6.2 yamt /* 2551 1.2.6.2 yamt * and handle the open owner 2552 1.2.6.2 yamt */ 2553 1.2.6.2 yamt if (ownerstp) { 2554 1.2.6.2 yamt new_open->ls_openowner = ownerstp; 2555 1.2.6.2 yamt LIST_INSERT_HEAD(&ownerstp->ls_open,new_open,ls_list); 2556 1.2.6.2 yamt } else { 2557 1.2.6.2 yamt new_open->ls_openowner = new_stp; 2558 1.2.6.2 yamt new_stp->ls_flags = 0; 2559 1.2.6.2 yamt nfsrvd_refcache(new_stp->ls_op); 2560 1.2.6.2 yamt new_stp->ls_noopens = 0; 2561 1.2.6.2 yamt LIST_INIT(&new_stp->ls_open); 2562 1.2.6.2 yamt LIST_INSERT_HEAD(&new_stp->ls_open, new_open, ls_list); 2563 1.2.6.2 yamt LIST_INSERT_HEAD(&clp->lc_open, new_stp, ls_list); 2564 1.2.6.2 yamt *new_stpp = NULL; 2565 1.2.6.2 yamt newnfsstats.srvopenowners++; 2566 1.2.6.2 yamt nfsrv_openpluslock++; 2567 1.2.6.2 yamt } 2568 1.2.6.2 yamt openstp = new_open; 2569 1.2.6.2 yamt new_open = NULL; 2570 1.2.6.2 yamt newnfsstats.srvopens++; 2571 1.2.6.2 yamt nfsrv_openpluslock++; 2572 1.2.6.2 yamt break; 2573 1.2.6.2 yamt } 2574 1.2.6.2 yamt } 2575 1.2.6.2 yamt if (stp == NULL) 2576 1.2.6.2 yamt error = NFSERR_EXPIRED; 2577 1.2.6.2 yamt } else if (new_stp->ls_flags & (NFSLCK_DELEGREAD | NFSLCK_DELEGWRITE)) { 2578 1.2.6.2 yamt /* 2579 1.2.6.2 yamt * Scan to see that no delegation for this client and file 2580 1.2.6.2 yamt * doesn't already exist. 2581 1.2.6.2 yamt * There also shouldn't yet be an Open for this file and 2582 1.2.6.2 yamt * openowner. 2583 1.2.6.2 yamt */ 2584 1.2.6.2 yamt LIST_FOREACH(stp, &lfp->lf_deleg, ls_file) { 2585 1.2.6.2 yamt if (stp->ls_clp == clp) 2586 1.2.6.2 yamt break; 2587 1.2.6.2 yamt } 2588 1.2.6.2 yamt if (stp == NULL && openstp == NULL) { 2589 1.2.6.2 yamt /* 2590 1.2.6.2 yamt * This is the Claim_Previous case with a delegation 2591 1.2.6.2 yamt * type != Delegate_None. 2592 1.2.6.2 yamt */ 2593 1.2.6.2 yamt /* 2594 1.2.6.2 yamt * First, add the delegation. (Although we must issue the 2595 1.2.6.2 yamt * delegation, we can also ask for an immediate return.) 2596 1.2.6.2 yamt */ 2597 1.2.6.2 yamt new_deleg->ls_stateid.seqid = delegstateidp->seqid = 0; 2598 1.2.6.2 yamt new_deleg->ls_stateid.other[0] = delegstateidp->other[0] = 2599 1.2.6.2 yamt clp->lc_clientid.lval[0]; 2600 1.2.6.2 yamt new_deleg->ls_stateid.other[1] = delegstateidp->other[1] = 2601 1.2.6.2 yamt clp->lc_clientid.lval[1]; 2602 1.2.6.2 yamt new_deleg->ls_stateid.other[2] = delegstateidp->other[2] = 2603 1.2.6.2 yamt nfsrv_nextstateindex(clp); 2604 1.2.6.2 yamt if (new_stp->ls_flags & NFSLCK_DELEGWRITE) { 2605 1.2.6.2 yamt new_deleg->ls_flags = (NFSLCK_DELEGWRITE | 2606 1.2.6.2 yamt NFSLCK_READACCESS | NFSLCK_WRITEACCESS); 2607 1.2.6.2 yamt *rflagsp |= NFSV4OPEN_WRITEDELEGATE; 2608 1.2.6.2 yamt } else { 2609 1.2.6.2 yamt new_deleg->ls_flags = (NFSLCK_DELEGREAD | 2610 1.2.6.2 yamt NFSLCK_READACCESS); 2611 1.2.6.2 yamt *rflagsp |= NFSV4OPEN_READDELEGATE; 2612 1.2.6.2 yamt } 2613 1.2.6.2 yamt new_deleg->ls_uid = new_stp->ls_uid; 2614 1.2.6.2 yamt new_deleg->ls_lfp = lfp; 2615 1.2.6.2 yamt new_deleg->ls_clp = clp; 2616 1.2.6.2 yamt new_deleg->ls_filerev = filerev; 2617 1.2.6.2 yamt new_deleg->ls_compref = nd->nd_compref; 2618 1.2.6.2 yamt LIST_INSERT_HEAD(&lfp->lf_deleg, new_deleg, ls_file); 2619 1.2.6.2 yamt LIST_INSERT_HEAD(NFSSTATEHASH(clp, 2620 1.2.6.2 yamt new_deleg->ls_stateid), new_deleg, ls_hash); 2621 1.2.6.2 yamt LIST_INSERT_HEAD(&clp->lc_deleg, new_deleg, ls_list); 2622 1.2.6.2 yamt new_deleg = NULL; 2623 1.2.6.2 yamt if (delegate == 2 || nfsrv_issuedelegs == 0 || 2624 1.2.6.2 yamt (clp->lc_flags & (LCL_CALLBACKSON | LCL_CBDOWN)) != 2625 1.2.6.2 yamt LCL_CALLBACKSON || 2626 1.2.6.2 yamt NFSRV_V4DELEGLIMIT(nfsrv_delegatecnt) || 2627 1.2.6.2 yamt !NFSVNO_DELEGOK(vp)) 2628 1.2.6.2 yamt *rflagsp |= NFSV4OPEN_RECALL; 2629 1.2.6.2 yamt newnfsstats.srvdelegates++; 2630 1.2.6.2 yamt nfsrv_openpluslock++; 2631 1.2.6.2 yamt nfsrv_delegatecnt++; 2632 1.2.6.2 yamt 2633 1.2.6.2 yamt /* 2634 1.2.6.2 yamt * Now, do the associated open. 2635 1.2.6.2 yamt */ 2636 1.2.6.2 yamt new_open->ls_stateid.seqid = 0; 2637 1.2.6.2 yamt new_open->ls_stateid.other[0] = clp->lc_clientid.lval[0]; 2638 1.2.6.2 yamt new_open->ls_stateid.other[1] = clp->lc_clientid.lval[1]; 2639 1.2.6.2 yamt new_open->ls_stateid.other[2] = nfsrv_nextstateindex(clp); 2640 1.2.6.2 yamt new_open->ls_flags = (new_stp->ls_flags & NFSLCK_DENYBITS) | 2641 1.2.6.2 yamt NFSLCK_OPEN; 2642 1.2.6.2 yamt if (new_stp->ls_flags & NFSLCK_DELEGWRITE) 2643 1.2.6.2 yamt new_open->ls_flags |= (NFSLCK_READACCESS | 2644 1.2.6.2 yamt NFSLCK_WRITEACCESS); 2645 1.2.6.2 yamt else 2646 1.2.6.2 yamt new_open->ls_flags |= NFSLCK_READACCESS; 2647 1.2.6.2 yamt new_open->ls_uid = new_stp->ls_uid; 2648 1.2.6.2 yamt new_open->ls_lfp = lfp; 2649 1.2.6.2 yamt new_open->ls_clp = clp; 2650 1.2.6.2 yamt LIST_INIT(&new_open->ls_open); 2651 1.2.6.2 yamt LIST_INSERT_HEAD(&lfp->lf_open, new_open, ls_file); 2652 1.2.6.2 yamt LIST_INSERT_HEAD(NFSSTATEHASH(clp, new_open->ls_stateid), 2653 1.2.6.2 yamt new_open, ls_hash); 2654 1.2.6.2 yamt /* 2655 1.2.6.2 yamt * and handle the open owner 2656 1.2.6.2 yamt */ 2657 1.2.6.2 yamt if (ownerstp) { 2658 1.2.6.2 yamt new_open->ls_openowner = ownerstp; 2659 1.2.6.2 yamt LIST_INSERT_HEAD(&ownerstp->ls_open, new_open, ls_list); 2660 1.2.6.2 yamt } else { 2661 1.2.6.2 yamt new_open->ls_openowner = new_stp; 2662 1.2.6.2 yamt new_stp->ls_flags = 0; 2663 1.2.6.2 yamt nfsrvd_refcache(new_stp->ls_op); 2664 1.2.6.2 yamt new_stp->ls_noopens = 0; 2665 1.2.6.2 yamt LIST_INIT(&new_stp->ls_open); 2666 1.2.6.2 yamt LIST_INSERT_HEAD(&new_stp->ls_open, new_open, ls_list); 2667 1.2.6.2 yamt LIST_INSERT_HEAD(&clp->lc_open, new_stp, ls_list); 2668 1.2.6.2 yamt *new_stpp = NULL; 2669 1.2.6.2 yamt newnfsstats.srvopenowners++; 2670 1.2.6.2 yamt nfsrv_openpluslock++; 2671 1.2.6.2 yamt } 2672 1.2.6.2 yamt openstp = new_open; 2673 1.2.6.2 yamt new_open = NULL; 2674 1.2.6.2 yamt newnfsstats.srvopens++; 2675 1.2.6.2 yamt nfsrv_openpluslock++; 2676 1.2.6.2 yamt } else { 2677 1.2.6.2 yamt error = NFSERR_RECLAIMCONFLICT; 2678 1.2.6.2 yamt } 2679 1.2.6.2 yamt } else if (ownerstp) { 2680 1.2.6.2 yamt if (ownerstp->ls_flags & NFSLCK_NEEDSCONFIRM) { 2681 1.2.6.2 yamt /* Replace the open */ 2682 1.2.6.2 yamt if (ownerstp->ls_op) 2683 1.2.6.2 yamt nfsrvd_derefcache(ownerstp->ls_op); 2684 1.2.6.2 yamt ownerstp->ls_op = new_stp->ls_op; 2685 1.2.6.2 yamt nfsrvd_refcache(ownerstp->ls_op); 2686 1.2.6.2 yamt ownerstp->ls_seq = new_stp->ls_seq; 2687 1.2.6.2 yamt *rflagsp |= NFSV4OPEN_RESULTCONFIRM; 2688 1.2.6.2 yamt stp = LIST_FIRST(&ownerstp->ls_open); 2689 1.2.6.2 yamt stp->ls_flags = (new_stp->ls_flags & NFSLCK_SHAREBITS) | 2690 1.2.6.2 yamt NFSLCK_OPEN; 2691 1.2.6.2 yamt stp->ls_stateid.seqid = 0; 2692 1.2.6.2 yamt stp->ls_uid = new_stp->ls_uid; 2693 1.2.6.2 yamt if (lfp != stp->ls_lfp) { 2694 1.2.6.2 yamt LIST_REMOVE(stp, ls_file); 2695 1.2.6.2 yamt LIST_INSERT_HEAD(&lfp->lf_open, stp, ls_file); 2696 1.2.6.2 yamt stp->ls_lfp = lfp; 2697 1.2.6.2 yamt } 2698 1.2.6.2 yamt openstp = stp; 2699 1.2.6.2 yamt } else if (openstp) { 2700 1.2.6.2 yamt openstp->ls_flags |= (new_stp->ls_flags & NFSLCK_SHAREBITS); 2701 1.2.6.2 yamt openstp->ls_stateid.seqid++; 2702 1.2.6.2 yamt 2703 1.2.6.2 yamt /* 2704 1.2.6.2 yamt * This is where we can choose to issue a delegation. 2705 1.2.6.2 yamt */ 2706 1.2.6.2 yamt if (delegate && nfsrv_issuedelegs && 2707 1.2.6.2 yamt writedeleg && !NFSVNO_EXRDONLY(exp) && 2708 1.2.6.2 yamt (nfsrv_writedelegifpos || !readonly) && 2709 1.2.6.2 yamt (clp->lc_flags & (LCL_CALLBACKSON | LCL_CBDOWN)) == 2710 1.2.6.2 yamt LCL_CALLBACKSON && 2711 1.2.6.2 yamt !NFSRV_V4DELEGLIMIT(nfsrv_delegatecnt) && 2712 1.2.6.2 yamt NFSVNO_DELEGOK(vp)) { 2713 1.2.6.2 yamt new_deleg->ls_stateid.seqid = delegstateidp->seqid = 0; 2714 1.2.6.2 yamt new_deleg->ls_stateid.other[0] = delegstateidp->other[0] 2715 1.2.6.2 yamt = clp->lc_clientid.lval[0]; 2716 1.2.6.2 yamt new_deleg->ls_stateid.other[1] = delegstateidp->other[1] 2717 1.2.6.2 yamt = clp->lc_clientid.lval[1]; 2718 1.2.6.2 yamt new_deleg->ls_stateid.other[2] = delegstateidp->other[2] 2719 1.2.6.2 yamt = nfsrv_nextstateindex(clp); 2720 1.2.6.2 yamt new_deleg->ls_flags = (NFSLCK_DELEGWRITE | 2721 1.2.6.2 yamt NFSLCK_READACCESS | NFSLCK_WRITEACCESS); 2722 1.2.6.2 yamt *rflagsp |= NFSV4OPEN_WRITEDELEGATE; 2723 1.2.6.2 yamt new_deleg->ls_uid = new_stp->ls_uid; 2724 1.2.6.2 yamt new_deleg->ls_lfp = lfp; 2725 1.2.6.2 yamt new_deleg->ls_clp = clp; 2726 1.2.6.2 yamt new_deleg->ls_filerev = filerev; 2727 1.2.6.2 yamt new_deleg->ls_compref = nd->nd_compref; 2728 1.2.6.2 yamt LIST_INSERT_HEAD(&lfp->lf_deleg, new_deleg, ls_file); 2729 1.2.6.2 yamt LIST_INSERT_HEAD(NFSSTATEHASH(clp, 2730 1.2.6.2 yamt new_deleg->ls_stateid), new_deleg, ls_hash); 2731 1.2.6.2 yamt LIST_INSERT_HEAD(&clp->lc_deleg, new_deleg, ls_list); 2732 1.2.6.2 yamt new_deleg = NULL; 2733 1.2.6.2 yamt newnfsstats.srvdelegates++; 2734 1.2.6.2 yamt nfsrv_openpluslock++; 2735 1.2.6.2 yamt nfsrv_delegatecnt++; 2736 1.2.6.2 yamt } 2737 1.2.6.2 yamt } else { 2738 1.2.6.2 yamt new_open->ls_stateid.seqid = 0; 2739 1.2.6.2 yamt new_open->ls_stateid.other[0] = clp->lc_clientid.lval[0]; 2740 1.2.6.2 yamt new_open->ls_stateid.other[1] = clp->lc_clientid.lval[1]; 2741 1.2.6.2 yamt new_open->ls_stateid.other[2] = nfsrv_nextstateindex(clp); 2742 1.2.6.2 yamt new_open->ls_flags = (new_stp->ls_flags & NFSLCK_SHAREBITS)| 2743 1.2.6.2 yamt NFSLCK_OPEN; 2744 1.2.6.2 yamt new_open->ls_uid = new_stp->ls_uid; 2745 1.2.6.2 yamt new_open->ls_openowner = ownerstp; 2746 1.2.6.2 yamt new_open->ls_lfp = lfp; 2747 1.2.6.2 yamt new_open->ls_clp = clp; 2748 1.2.6.2 yamt LIST_INIT(&new_open->ls_open); 2749 1.2.6.2 yamt LIST_INSERT_HEAD(&lfp->lf_open, new_open, ls_file); 2750 1.2.6.2 yamt LIST_INSERT_HEAD(&ownerstp->ls_open, new_open, ls_list); 2751 1.2.6.2 yamt LIST_INSERT_HEAD(NFSSTATEHASH(clp, new_open->ls_stateid), 2752 1.2.6.2 yamt new_open, ls_hash); 2753 1.2.6.2 yamt openstp = new_open; 2754 1.2.6.2 yamt new_open = NULL; 2755 1.2.6.2 yamt newnfsstats.srvopens++; 2756 1.2.6.2 yamt nfsrv_openpluslock++; 2757 1.2.6.2 yamt 2758 1.2.6.2 yamt /* 2759 1.2.6.2 yamt * This is where we can choose to issue a delegation. 2760 1.2.6.2 yamt */ 2761 1.2.6.2 yamt if (delegate && nfsrv_issuedelegs && 2762 1.2.6.2 yamt (writedeleg || readonly) && 2763 1.2.6.2 yamt (clp->lc_flags & (LCL_CALLBACKSON | LCL_CBDOWN)) == 2764 1.2.6.2 yamt LCL_CALLBACKSON && 2765 1.2.6.2 yamt !NFSRV_V4DELEGLIMIT(nfsrv_delegatecnt) && 2766 1.2.6.2 yamt NFSVNO_DELEGOK(vp)) { 2767 1.2.6.2 yamt new_deleg->ls_stateid.seqid = delegstateidp->seqid = 0; 2768 1.2.6.2 yamt new_deleg->ls_stateid.other[0] = delegstateidp->other[0] 2769 1.2.6.2 yamt = clp->lc_clientid.lval[0]; 2770 1.2.6.2 yamt new_deleg->ls_stateid.other[1] = delegstateidp->other[1] 2771 1.2.6.2 yamt = clp->lc_clientid.lval[1]; 2772 1.2.6.2 yamt new_deleg->ls_stateid.other[2] = delegstateidp->other[2] 2773 1.2.6.2 yamt = nfsrv_nextstateindex(clp); 2774 1.2.6.2 yamt if (writedeleg && !NFSVNO_EXRDONLY(exp) && 2775 1.2.6.2 yamt (nfsrv_writedelegifpos || !readonly)) { 2776 1.2.6.2 yamt new_deleg->ls_flags = (NFSLCK_DELEGWRITE | 2777 1.2.6.2 yamt NFSLCK_READACCESS | NFSLCK_WRITEACCESS); 2778 1.2.6.2 yamt *rflagsp |= NFSV4OPEN_WRITEDELEGATE; 2779 1.2.6.2 yamt } else { 2780 1.2.6.2 yamt new_deleg->ls_flags = (NFSLCK_DELEGREAD | 2781 1.2.6.2 yamt NFSLCK_READACCESS); 2782 1.2.6.2 yamt *rflagsp |= NFSV4OPEN_READDELEGATE; 2783 1.2.6.2 yamt } 2784 1.2.6.2 yamt new_deleg->ls_uid = new_stp->ls_uid; 2785 1.2.6.2 yamt new_deleg->ls_lfp = lfp; 2786 1.2.6.2 yamt new_deleg->ls_clp = clp; 2787 1.2.6.2 yamt new_deleg->ls_filerev = filerev; 2788 1.2.6.2 yamt new_deleg->ls_compref = nd->nd_compref; 2789 1.2.6.2 yamt LIST_INSERT_HEAD(&lfp->lf_deleg, new_deleg, ls_file); 2790 1.2.6.2 yamt LIST_INSERT_HEAD(NFSSTATEHASH(clp, 2791 1.2.6.2 yamt new_deleg->ls_stateid), new_deleg, ls_hash); 2792 1.2.6.2 yamt LIST_INSERT_HEAD(&clp->lc_deleg, new_deleg, ls_list); 2793 1.2.6.2 yamt new_deleg = NULL; 2794 1.2.6.2 yamt newnfsstats.srvdelegates++; 2795 1.2.6.2 yamt nfsrv_openpluslock++; 2796 1.2.6.2 yamt nfsrv_delegatecnt++; 2797 1.2.6.2 yamt } 2798 1.2.6.2 yamt } 2799 1.2.6.2 yamt } else { 2800 1.2.6.2 yamt /* 2801 1.2.6.2 yamt * New owner case. Start the open_owner sequence with a 2802 1.2.6.2 yamt * Needs confirmation (unless a reclaim) and hang the 2803 1.2.6.2 yamt * new open off it. 2804 1.2.6.2 yamt */ 2805 1.2.6.2 yamt new_open->ls_stateid.seqid = 0; 2806 1.2.6.2 yamt new_open->ls_stateid.other[0] = clp->lc_clientid.lval[0]; 2807 1.2.6.2 yamt new_open->ls_stateid.other[1] = clp->lc_clientid.lval[1]; 2808 1.2.6.2 yamt new_open->ls_stateid.other[2] = nfsrv_nextstateindex(clp); 2809 1.2.6.2 yamt new_open->ls_flags = (new_stp->ls_flags & NFSLCK_SHAREBITS) | 2810 1.2.6.2 yamt NFSLCK_OPEN; 2811 1.2.6.2 yamt new_open->ls_uid = new_stp->ls_uid; 2812 1.2.6.2 yamt LIST_INIT(&new_open->ls_open); 2813 1.2.6.2 yamt new_open->ls_openowner = new_stp; 2814 1.2.6.2 yamt new_open->ls_lfp = lfp; 2815 1.2.6.2 yamt new_open->ls_clp = clp; 2816 1.2.6.2 yamt LIST_INSERT_HEAD(&lfp->lf_open, new_open, ls_file); 2817 1.2.6.2 yamt if (new_stp->ls_flags & NFSLCK_RECLAIM) { 2818 1.2.6.2 yamt new_stp->ls_flags = 0; 2819 1.2.6.2 yamt } else { 2820 1.2.6.2 yamt *rflagsp |= NFSV4OPEN_RESULTCONFIRM; 2821 1.2.6.2 yamt new_stp->ls_flags = NFSLCK_NEEDSCONFIRM; 2822 1.2.6.2 yamt } 2823 1.2.6.2 yamt nfsrvd_refcache(new_stp->ls_op); 2824 1.2.6.2 yamt new_stp->ls_noopens = 0; 2825 1.2.6.2 yamt LIST_INIT(&new_stp->ls_open); 2826 1.2.6.2 yamt LIST_INSERT_HEAD(&new_stp->ls_open, new_open, ls_list); 2827 1.2.6.2 yamt LIST_INSERT_HEAD(&clp->lc_open, new_stp, ls_list); 2828 1.2.6.2 yamt LIST_INSERT_HEAD(NFSSTATEHASH(clp, new_open->ls_stateid), 2829 1.2.6.2 yamt new_open, ls_hash); 2830 1.2.6.2 yamt openstp = new_open; 2831 1.2.6.2 yamt new_open = NULL; 2832 1.2.6.2 yamt *new_stpp = NULL; 2833 1.2.6.2 yamt newnfsstats.srvopens++; 2834 1.2.6.2 yamt nfsrv_openpluslock++; 2835 1.2.6.2 yamt newnfsstats.srvopenowners++; 2836 1.2.6.2 yamt nfsrv_openpluslock++; 2837 1.2.6.2 yamt } 2838 1.2.6.2 yamt if (!error) { 2839 1.2.6.2 yamt stateidp->seqid = openstp->ls_stateid.seqid; 2840 1.2.6.2 yamt stateidp->other[0] = openstp->ls_stateid.other[0]; 2841 1.2.6.2 yamt stateidp->other[1] = openstp->ls_stateid.other[1]; 2842 1.2.6.2 yamt stateidp->other[2] = openstp->ls_stateid.other[2]; 2843 1.2.6.2 yamt } 2844 1.2.6.2 yamt NFSUNLOCKSTATE(); 2845 1.2.6.2 yamt if (haslock) { 2846 1.2.6.2 yamt NFSLOCKV4ROOTMUTEX(); 2847 1.2.6.2 yamt nfsv4_unlock(&nfsv4rootfs_lock, 1); 2848 1.2.6.2 yamt NFSUNLOCKV4ROOTMUTEX(); 2849 1.2.6.2 yamt } 2850 1.2.6.2 yamt if (new_open) 2851 1.2.6.2 yamt FREE((caddr_t)new_open, M_NFSDSTATE); 2852 1.2.6.2 yamt if (new_deleg) 2853 1.2.6.2 yamt FREE((caddr_t)new_deleg, M_NFSDSTATE); 2854 1.2.6.2 yamt 2855 1.2.6.2 yamt out: 2856 1.2.6.2 yamt NFSEXITCODE2(error, nd); 2857 1.2.6.2 yamt return (error); 2858 1.2.6.2 yamt } 2859 1.2.6.2 yamt 2860 1.2.6.2 yamt /* 2861 1.2.6.2 yamt * Open update. Does the confirm, downgrade and close. 2862 1.2.6.2 yamt */ 2863 1.2.6.2 yamt APPLESTATIC int 2864 1.2.6.2 yamt nfsrv_openupdate(vnode_t vp, struct nfsstate *new_stp, nfsquad_t clientid, 2865 1.2.6.2 yamt nfsv4stateid_t *stateidp, struct nfsrv_descript *nd, NFSPROC_T *p) 2866 1.2.6.2 yamt { 2867 1.2.6.2 yamt struct nfsstate *stp, *ownerstp; 2868 1.2.6.2 yamt struct nfsclient *clp; 2869 1.2.6.2 yamt struct nfslockfile *lfp; 2870 1.2.6.2 yamt u_int32_t bits; 2871 1.2.6.2 yamt int error = 0, gotstate = 0, len = 0; 2872 1.2.6.2 yamt u_char client[NFSV4_OPAQUELIMIT]; 2873 1.2.6.2 yamt 2874 1.2.6.2 yamt /* 2875 1.2.6.2 yamt * Check for restart conditions (client and server). 2876 1.2.6.2 yamt */ 2877 1.2.6.2 yamt error = nfsrv_checkrestart(clientid, new_stp->ls_flags, 2878 1.2.6.2 yamt &new_stp->ls_stateid, 0); 2879 1.2.6.2 yamt if (error) 2880 1.2.6.2 yamt goto out; 2881 1.2.6.2 yamt 2882 1.2.6.2 yamt NFSLOCKSTATE(); 2883 1.2.6.2 yamt /* 2884 1.2.6.2 yamt * Get the open structure via clientid and stateid. 2885 1.2.6.2 yamt */ 2886 1.2.6.2 yamt error = nfsrv_getclient(clientid, CLOPS_RENEW, &clp, 2887 1.2.6.2 yamt (nfsquad_t)((u_quad_t)0), NULL, p); 2888 1.2.6.2 yamt if (!error) 2889 1.2.6.2 yamt error = nfsrv_getstate(clp, &new_stp->ls_stateid, 2890 1.2.6.2 yamt new_stp->ls_flags, &stp); 2891 1.2.6.2 yamt 2892 1.2.6.2 yamt /* 2893 1.2.6.2 yamt * Sanity check the open. 2894 1.2.6.2 yamt */ 2895 1.2.6.2 yamt if (!error && (!(stp->ls_flags & NFSLCK_OPEN) || 2896 1.2.6.2 yamt (!(new_stp->ls_flags & NFSLCK_CONFIRM) && 2897 1.2.6.2 yamt (stp->ls_openowner->ls_flags & NFSLCK_NEEDSCONFIRM)) || 2898 1.2.6.2 yamt ((new_stp->ls_flags & NFSLCK_CONFIRM) && 2899 1.2.6.2 yamt (!(stp->ls_openowner->ls_flags & NFSLCK_NEEDSCONFIRM))))) 2900 1.2.6.2 yamt error = NFSERR_BADSTATEID; 2901 1.2.6.2 yamt 2902 1.2.6.2 yamt if (!error) 2903 1.2.6.2 yamt error = nfsrv_checkseqid(nd, new_stp->ls_seq, 2904 1.2.6.2 yamt stp->ls_openowner, new_stp->ls_op); 2905 1.2.6.2 yamt if (!error && stp->ls_stateid.seqid != new_stp->ls_stateid.seqid && 2906 1.2.6.2 yamt !(new_stp->ls_flags & NFSLCK_CONFIRM)) 2907 1.2.6.2 yamt error = NFSERR_OLDSTATEID; 2908 1.2.6.2 yamt if (!error && vnode_vtype(vp) != VREG) { 2909 1.2.6.2 yamt if (vnode_vtype(vp) == VDIR) 2910 1.2.6.2 yamt error = NFSERR_ISDIR; 2911 1.2.6.2 yamt else 2912 1.2.6.2 yamt error = NFSERR_INVAL; 2913 1.2.6.2 yamt } 2914 1.2.6.2 yamt 2915 1.2.6.2 yamt if (error) { 2916 1.2.6.2 yamt /* 2917 1.2.6.2 yamt * If a client tries to confirm an Open with a bad 2918 1.2.6.2 yamt * seqid# and there are no byte range locks or other Opens 2919 1.2.6.2 yamt * on the openowner, just throw it away, so the next use of the 2920 1.2.6.2 yamt * openowner will start a fresh seq#. 2921 1.2.6.2 yamt */ 2922 1.2.6.2 yamt if (error == NFSERR_BADSEQID && 2923 1.2.6.2 yamt (new_stp->ls_flags & NFSLCK_CONFIRM) && 2924 1.2.6.2 yamt nfsrv_nootherstate(stp)) 2925 1.2.6.2 yamt nfsrv_freeopenowner(stp->ls_openowner, 0, p); 2926 1.2.6.2 yamt NFSUNLOCKSTATE(); 2927 1.2.6.2 yamt goto out; 2928 1.2.6.2 yamt } 2929 1.2.6.2 yamt 2930 1.2.6.2 yamt /* 2931 1.2.6.2 yamt * Set the return stateid. 2932 1.2.6.2 yamt */ 2933 1.2.6.2 yamt stateidp->seqid = stp->ls_stateid.seqid + 1; 2934 1.2.6.2 yamt stateidp->other[0] = stp->ls_stateid.other[0]; 2935 1.2.6.2 yamt stateidp->other[1] = stp->ls_stateid.other[1]; 2936 1.2.6.2 yamt stateidp->other[2] = stp->ls_stateid.other[2]; 2937 1.2.6.2 yamt /* 2938 1.2.6.2 yamt * Now, handle the three cases. 2939 1.2.6.2 yamt */ 2940 1.2.6.2 yamt if (new_stp->ls_flags & NFSLCK_CONFIRM) { 2941 1.2.6.2 yamt /* 2942 1.2.6.2 yamt * If the open doesn't need confirmation, it seems to me that 2943 1.2.6.2 yamt * there is a client error, but I'll just log it and keep going? 2944 1.2.6.2 yamt */ 2945 1.2.6.2 yamt if (!(stp->ls_openowner->ls_flags & NFSLCK_NEEDSCONFIRM)) 2946 1.2.6.2 yamt printf("Nfsv4d: stray open confirm\n"); 2947 1.2.6.2 yamt stp->ls_openowner->ls_flags = 0; 2948 1.2.6.2 yamt stp->ls_stateid.seqid++; 2949 1.2.6.2 yamt if (!(clp->lc_flags & LCL_STAMPEDSTABLE)) { 2950 1.2.6.2 yamt clp->lc_flags |= LCL_STAMPEDSTABLE; 2951 1.2.6.2 yamt len = clp->lc_idlen; 2952 1.2.6.2 yamt NFSBCOPY(clp->lc_id, client, len); 2953 1.2.6.2 yamt gotstate = 1; 2954 1.2.6.2 yamt } 2955 1.2.6.2 yamt NFSUNLOCKSTATE(); 2956 1.2.6.2 yamt } else if (new_stp->ls_flags & NFSLCK_CLOSE) { 2957 1.2.6.2 yamt ownerstp = stp->ls_openowner; 2958 1.2.6.2 yamt lfp = stp->ls_lfp; 2959 1.2.6.2 yamt if (nfsrv_dolocallocks != 0 && !LIST_EMPTY(&stp->ls_open)) { 2960 1.2.6.2 yamt /* Get the lf lock */ 2961 1.2.6.2 yamt nfsrv_locklf(lfp); 2962 1.2.6.2 yamt NFSUNLOCKSTATE(); 2963 1.2.6.2 yamt if (nfsrv_freeopen(stp, vp, 1, p) == 0) { 2964 1.2.6.2 yamt NFSLOCKSTATE(); 2965 1.2.6.2 yamt nfsrv_unlocklf(lfp); 2966 1.2.6.2 yamt NFSUNLOCKSTATE(); 2967 1.2.6.2 yamt } 2968 1.2.6.2 yamt } else { 2969 1.2.6.2 yamt (void) nfsrv_freeopen(stp, NULL, 0, p); 2970 1.2.6.2 yamt NFSUNLOCKSTATE(); 2971 1.2.6.2 yamt } 2972 1.2.6.2 yamt } else { 2973 1.2.6.2 yamt /* 2974 1.2.6.2 yamt * Update the share bits, making sure that the new set are a 2975 1.2.6.2 yamt * subset of the old ones. 2976 1.2.6.2 yamt */ 2977 1.2.6.2 yamt bits = (new_stp->ls_flags & NFSLCK_SHAREBITS); 2978 1.2.6.2 yamt if (~(stp->ls_flags) & bits) { 2979 1.2.6.2 yamt NFSUNLOCKSTATE(); 2980 1.2.6.2 yamt error = NFSERR_INVAL; 2981 1.2.6.2 yamt goto out; 2982 1.2.6.2 yamt } 2983 1.2.6.2 yamt stp->ls_flags = (bits | NFSLCK_OPEN); 2984 1.2.6.2 yamt stp->ls_stateid.seqid++; 2985 1.2.6.2 yamt NFSUNLOCKSTATE(); 2986 1.2.6.2 yamt } 2987 1.2.6.2 yamt 2988 1.2.6.2 yamt /* 2989 1.2.6.2 yamt * If the client just confirmed its first open, write a timestamp 2990 1.2.6.2 yamt * to the stable storage file. 2991 1.2.6.2 yamt */ 2992 1.2.6.2 yamt if (gotstate != 0) { 2993 1.2.6.2 yamt nfsrv_writestable(client, len, NFSNST_NEWSTATE, p); 2994 1.2.6.2 yamt nfsrv_backupstable(); 2995 1.2.6.2 yamt } 2996 1.2.6.2 yamt 2997 1.2.6.2 yamt out: 2998 1.2.6.2 yamt NFSEXITCODE2(error, nd); 2999 1.2.6.2 yamt return (error); 3000 1.2.6.2 yamt } 3001 1.2.6.2 yamt 3002 1.2.6.2 yamt /* 3003 1.2.6.2 yamt * Delegation update. Does the purge and return. 3004 1.2.6.2 yamt */ 3005 1.2.6.2 yamt APPLESTATIC int 3006 1.2.6.2 yamt nfsrv_delegupdate(nfsquad_t clientid, nfsv4stateid_t *stateidp, 3007 1.2.6.2 yamt vnode_t vp, int op, struct ucred *cred, NFSPROC_T *p) 3008 1.2.6.2 yamt { 3009 1.2.6.2 yamt struct nfsstate *stp; 3010 1.2.6.2 yamt struct nfsclient *clp; 3011 1.2.6.2 yamt int error = 0; 3012 1.2.6.2 yamt fhandle_t fh; 3013 1.2.6.2 yamt 3014 1.2.6.2 yamt /* 3015 1.2.6.2 yamt * Do a sanity check against the file handle for DelegReturn. 3016 1.2.6.2 yamt */ 3017 1.2.6.2 yamt if (vp) { 3018 1.2.6.2 yamt error = nfsvno_getfh(vp, &fh, p); 3019 1.2.6.2 yamt if (error) 3020 1.2.6.2 yamt goto out; 3021 1.2.6.2 yamt } 3022 1.2.6.2 yamt /* 3023 1.2.6.2 yamt * Check for restart conditions (client and server). 3024 1.2.6.2 yamt */ 3025 1.2.6.2 yamt if (op == NFSV4OP_DELEGRETURN) 3026 1.2.6.2 yamt error = nfsrv_checkrestart(clientid, NFSLCK_DELEGRETURN, 3027 1.2.6.2 yamt stateidp, 0); 3028 1.2.6.2 yamt else 3029 1.2.6.2 yamt error = nfsrv_checkrestart(clientid, NFSLCK_DELEGPURGE, 3030 1.2.6.2 yamt stateidp, 0); 3031 1.2.6.2 yamt 3032 1.2.6.2 yamt NFSLOCKSTATE(); 3033 1.2.6.2 yamt /* 3034 1.2.6.2 yamt * Get the open structure via clientid and stateid. 3035 1.2.6.2 yamt */ 3036 1.2.6.2 yamt if (!error) 3037 1.2.6.2 yamt error = nfsrv_getclient(clientid, CLOPS_RENEW, &clp, 3038 1.2.6.2 yamt (nfsquad_t)((u_quad_t)0), NULL, p); 3039 1.2.6.2 yamt if (error) { 3040 1.2.6.2 yamt if (error == NFSERR_CBPATHDOWN) 3041 1.2.6.2 yamt error = 0; 3042 1.2.6.2 yamt if (error == NFSERR_STALECLIENTID && op == NFSV4OP_DELEGRETURN) 3043 1.2.6.2 yamt error = NFSERR_STALESTATEID; 3044 1.2.6.2 yamt } 3045 1.2.6.2 yamt if (!error && op == NFSV4OP_DELEGRETURN) { 3046 1.2.6.2 yamt error = nfsrv_getstate(clp, stateidp, NFSLCK_DELEGRETURN, &stp); 3047 1.2.6.2 yamt if (!error && stp->ls_stateid.seqid != stateidp->seqid) 3048 1.2.6.2 yamt error = NFSERR_OLDSTATEID; 3049 1.2.6.2 yamt } 3050 1.2.6.2 yamt /* 3051 1.2.6.2 yamt * NFSERR_EXPIRED means that the state has gone away, 3052 1.2.6.2 yamt * so Delegations have been purged. Just return ok. 3053 1.2.6.2 yamt */ 3054 1.2.6.2 yamt if (error == NFSERR_EXPIRED && op == NFSV4OP_DELEGPURGE) { 3055 1.2.6.2 yamt NFSUNLOCKSTATE(); 3056 1.2.6.2 yamt error = 0; 3057 1.2.6.2 yamt goto out; 3058 1.2.6.2 yamt } 3059 1.2.6.2 yamt if (error) { 3060 1.2.6.2 yamt NFSUNLOCKSTATE(); 3061 1.2.6.2 yamt goto out; 3062 1.2.6.2 yamt } 3063 1.2.6.2 yamt 3064 1.2.6.2 yamt if (op == NFSV4OP_DELEGRETURN) { 3065 1.2.6.2 yamt if (NFSBCMP((caddr_t)&fh, (caddr_t)&stp->ls_lfp->lf_fh, 3066 1.2.6.2 yamt sizeof (fhandle_t))) { 3067 1.2.6.2 yamt NFSUNLOCKSTATE(); 3068 1.2.6.2 yamt error = NFSERR_BADSTATEID; 3069 1.2.6.2 yamt goto out; 3070 1.2.6.2 yamt } 3071 1.2.6.2 yamt nfsrv_freedeleg(stp); 3072 1.2.6.2 yamt } else { 3073 1.2.6.2 yamt nfsrv_freedeleglist(&clp->lc_olddeleg); 3074 1.2.6.2 yamt } 3075 1.2.6.2 yamt NFSUNLOCKSTATE(); 3076 1.2.6.2 yamt error = 0; 3077 1.2.6.2 yamt 3078 1.2.6.2 yamt out: 3079 1.2.6.2 yamt NFSEXITCODE(error); 3080 1.2.6.2 yamt return (error); 3081 1.2.6.2 yamt } 3082 1.2.6.2 yamt 3083 1.2.6.2 yamt /* 3084 1.2.6.2 yamt * Release lock owner. 3085 1.2.6.2 yamt */ 3086 1.2.6.2 yamt APPLESTATIC int 3087 1.2.6.2 yamt nfsrv_releaselckown(struct nfsstate *new_stp, nfsquad_t clientid, 3088 1.2.6.2 yamt NFSPROC_T *p) 3089 1.2.6.2 yamt { 3090 1.2.6.2 yamt struct nfsstate *stp, *nstp, *openstp, *ownstp; 3091 1.2.6.2 yamt struct nfsclient *clp; 3092 1.2.6.2 yamt int error = 0; 3093 1.2.6.2 yamt 3094 1.2.6.2 yamt /* 3095 1.2.6.2 yamt * Check for restart conditions (client and server). 3096 1.2.6.2 yamt */ 3097 1.2.6.2 yamt error = nfsrv_checkrestart(clientid, new_stp->ls_flags, 3098 1.2.6.2 yamt &new_stp->ls_stateid, 0); 3099 1.2.6.2 yamt if (error) 3100 1.2.6.2 yamt goto out; 3101 1.2.6.2 yamt 3102 1.2.6.2 yamt NFSLOCKSTATE(); 3103 1.2.6.2 yamt /* 3104 1.2.6.2 yamt * Get the lock owner by name. 3105 1.2.6.2 yamt */ 3106 1.2.6.2 yamt error = nfsrv_getclient(clientid, CLOPS_RENEW, &clp, 3107 1.2.6.2 yamt (nfsquad_t)((u_quad_t)0), NULL, p); 3108 1.2.6.2 yamt if (error) { 3109 1.2.6.2 yamt NFSUNLOCKSTATE(); 3110 1.2.6.2 yamt goto out; 3111 1.2.6.2 yamt } 3112 1.2.6.2 yamt LIST_FOREACH(ownstp, &clp->lc_open, ls_list) { 3113 1.2.6.2 yamt LIST_FOREACH(openstp, &ownstp->ls_open, ls_list) { 3114 1.2.6.2 yamt stp = LIST_FIRST(&openstp->ls_open); 3115 1.2.6.2 yamt while (stp != NULL) { 3116 1.2.6.2 yamt nstp = LIST_NEXT(stp, ls_list); 3117 1.2.6.2 yamt /* 3118 1.2.6.2 yamt * If the owner matches, check for locks and 3119 1.2.6.2 yamt * then free or return an error. 3120 1.2.6.2 yamt */ 3121 1.2.6.2 yamt if (stp->ls_ownerlen == new_stp->ls_ownerlen && 3122 1.2.6.2 yamt !NFSBCMP(stp->ls_owner, new_stp->ls_owner, 3123 1.2.6.2 yamt stp->ls_ownerlen)){ 3124 1.2.6.2 yamt if (LIST_EMPTY(&stp->ls_lock)) { 3125 1.2.6.2 yamt nfsrv_freelockowner(stp, NULL, 0, p); 3126 1.2.6.2 yamt } else { 3127 1.2.6.2 yamt NFSUNLOCKSTATE(); 3128 1.2.6.2 yamt error = NFSERR_LOCKSHELD; 3129 1.2.6.2 yamt goto out; 3130 1.2.6.2 yamt } 3131 1.2.6.2 yamt } 3132 1.2.6.2 yamt stp = nstp; 3133 1.2.6.2 yamt } 3134 1.2.6.2 yamt } 3135 1.2.6.2 yamt } 3136 1.2.6.2 yamt NFSUNLOCKSTATE(); 3137 1.2.6.2 yamt 3138 1.2.6.2 yamt out: 3139 1.2.6.2 yamt NFSEXITCODE(error); 3140 1.2.6.2 yamt return (error); 3141 1.2.6.2 yamt } 3142 1.2.6.2 yamt 3143 1.2.6.2 yamt /* 3144 1.2.6.2 yamt * Get the file handle for a lock structure. 3145 1.2.6.2 yamt */ 3146 1.2.6.2 yamt static int 3147 1.2.6.2 yamt nfsrv_getlockfh(vnode_t vp, u_short flags, 3148 1.2.6.2 yamt struct nfslockfile **new_lfpp, fhandle_t *nfhp, NFSPROC_T *p) 3149 1.2.6.2 yamt { 3150 1.2.6.2 yamt fhandle_t *fhp = NULL; 3151 1.2.6.2 yamt struct nfslockfile *new_lfp; 3152 1.2.6.2 yamt int error; 3153 1.2.6.2 yamt 3154 1.2.6.2 yamt /* 3155 1.2.6.2 yamt * For lock, use the new nfslock structure, otherwise just 3156 1.2.6.2 yamt * a fhandle_t on the stack. 3157 1.2.6.2 yamt */ 3158 1.2.6.2 yamt if (flags & NFSLCK_OPEN) { 3159 1.2.6.2 yamt new_lfp = *new_lfpp; 3160 1.2.6.2 yamt fhp = &new_lfp->lf_fh; 3161 1.2.6.2 yamt } else if (nfhp) { 3162 1.2.6.2 yamt fhp = nfhp; 3163 1.2.6.2 yamt } else { 3164 1.2.6.2 yamt panic("nfsrv_getlockfh"); 3165 1.2.6.2 yamt } 3166 1.2.6.2 yamt error = nfsvno_getfh(vp, fhp, p); 3167 1.2.6.2 yamt NFSEXITCODE(error); 3168 1.2.6.2 yamt return (error); 3169 1.2.6.2 yamt } 3170 1.2.6.2 yamt 3171 1.2.6.2 yamt /* 3172 1.2.6.2 yamt * Get an nfs lock structure. Allocate one, as required, and return a 3173 1.2.6.2 yamt * pointer to it. 3174 1.2.6.2 yamt * Returns an NFSERR_xxx upon failure or -1 to indicate no current lock. 3175 1.2.6.2 yamt */ 3176 1.2.6.2 yamt static int 3177 1.2.6.2 yamt nfsrv_getlockfile(u_short flags, struct nfslockfile **new_lfpp, 3178 1.2.6.2 yamt struct nfslockfile **lfpp, fhandle_t *nfhp, int lockit) 3179 1.2.6.2 yamt { 3180 1.2.6.2 yamt struct nfslockfile *lfp; 3181 1.2.6.2 yamt fhandle_t *fhp = NULL, *tfhp; 3182 1.2.6.2 yamt struct nfslockhashhead *hp; 3183 1.2.6.2 yamt struct nfslockfile *new_lfp = NULL; 3184 1.2.6.2 yamt 3185 1.2.6.2 yamt /* 3186 1.2.6.2 yamt * For lock, use the new nfslock structure, otherwise just 3187 1.2.6.2 yamt * a fhandle_t on the stack. 3188 1.2.6.2 yamt */ 3189 1.2.6.2 yamt if (flags & NFSLCK_OPEN) { 3190 1.2.6.2 yamt new_lfp = *new_lfpp; 3191 1.2.6.2 yamt fhp = &new_lfp->lf_fh; 3192 1.2.6.2 yamt } else if (nfhp) { 3193 1.2.6.2 yamt fhp = nfhp; 3194 1.2.6.2 yamt } else { 3195 1.2.6.2 yamt panic("nfsrv_getlockfile"); 3196 1.2.6.2 yamt } 3197 1.2.6.2 yamt 3198 1.2.6.2 yamt hp = NFSLOCKHASH(fhp); 3199 1.2.6.2 yamt LIST_FOREACH(lfp, hp, lf_hash) { 3200 1.2.6.2 yamt tfhp = &lfp->lf_fh; 3201 1.2.6.2 yamt if (NFSVNO_CMPFH(fhp, tfhp)) { 3202 1.2.6.2 yamt if (lockit) 3203 1.2.6.2 yamt nfsrv_locklf(lfp); 3204 1.2.6.2 yamt *lfpp = lfp; 3205 1.2.6.2 yamt return (0); 3206 1.2.6.2 yamt } 3207 1.2.6.2 yamt } 3208 1.2.6.2 yamt if (!(flags & NFSLCK_OPEN)) 3209 1.2.6.2 yamt return (-1); 3210 1.2.6.2 yamt 3211 1.2.6.2 yamt /* 3212 1.2.6.2 yamt * No match, so chain the new one into the list. 3213 1.2.6.2 yamt */ 3214 1.2.6.2 yamt LIST_INIT(&new_lfp->lf_open); 3215 1.2.6.2 yamt LIST_INIT(&new_lfp->lf_lock); 3216 1.2.6.2 yamt LIST_INIT(&new_lfp->lf_deleg); 3217 1.2.6.2 yamt LIST_INIT(&new_lfp->lf_locallock); 3218 1.2.6.2 yamt LIST_INIT(&new_lfp->lf_rollback); 3219 1.2.6.2 yamt new_lfp->lf_locallock_lck.nfslock_usecnt = 0; 3220 1.2.6.2 yamt new_lfp->lf_locallock_lck.nfslock_lock = 0; 3221 1.2.6.2 yamt new_lfp->lf_usecount = 0; 3222 1.2.6.2 yamt LIST_INSERT_HEAD(hp, new_lfp, lf_hash); 3223 1.2.6.2 yamt *lfpp = new_lfp; 3224 1.2.6.2 yamt *new_lfpp = NULL; 3225 1.2.6.2 yamt return (0); 3226 1.2.6.2 yamt } 3227 1.2.6.2 yamt 3228 1.2.6.2 yamt /* 3229 1.2.6.2 yamt * This function adds a nfslock lock structure to the list for the associated 3230 1.2.6.2 yamt * nfsstate and nfslockfile structures. It will be inserted after the 3231 1.2.6.2 yamt * entry pointed at by insert_lop. 3232 1.2.6.2 yamt */ 3233 1.2.6.2 yamt static void 3234 1.2.6.2 yamt nfsrv_insertlock(struct nfslock *new_lop, struct nfslock *insert_lop, 3235 1.2.6.2 yamt struct nfsstate *stp, struct nfslockfile *lfp) 3236 1.2.6.2 yamt { 3237 1.2.6.2 yamt struct nfslock *lop, *nlop; 3238 1.2.6.2 yamt 3239 1.2.6.2 yamt new_lop->lo_stp = stp; 3240 1.2.6.2 yamt new_lop->lo_lfp = lfp; 3241 1.2.6.2 yamt 3242 1.2.6.2 yamt if (stp != NULL) { 3243 1.2.6.2 yamt /* Insert in increasing lo_first order */ 3244 1.2.6.2 yamt lop = LIST_FIRST(&lfp->lf_lock); 3245 1.2.6.2 yamt if (lop == NULL || 3246 1.2.6.2 yamt new_lop->lo_first <= lop->lo_first) { 3247 1.2.6.2 yamt LIST_INSERT_HEAD(&lfp->lf_lock, new_lop, lo_lckfile); 3248 1.2.6.2 yamt } else { 3249 1.2.6.2 yamt nlop = LIST_NEXT(lop, lo_lckfile); 3250 1.2.6.2 yamt while (nlop != NULL && 3251 1.2.6.2 yamt nlop->lo_first < new_lop->lo_first) { 3252 1.2.6.2 yamt lop = nlop; 3253 1.2.6.2 yamt nlop = LIST_NEXT(lop, lo_lckfile); 3254 1.2.6.2 yamt } 3255 1.2.6.2 yamt LIST_INSERT_AFTER(lop, new_lop, lo_lckfile); 3256 1.2.6.2 yamt } 3257 1.2.6.2 yamt } else { 3258 1.2.6.2 yamt new_lop->lo_lckfile.le_prev = NULL; /* list not used */ 3259 1.2.6.2 yamt } 3260 1.2.6.2 yamt 3261 1.2.6.2 yamt /* 3262 1.2.6.2 yamt * Insert after insert_lop, which is overloaded as stp or lfp for 3263 1.2.6.2 yamt * an empty list. 3264 1.2.6.2 yamt */ 3265 1.2.6.2 yamt if (stp == NULL && (struct nfslockfile *)insert_lop == lfp) 3266 1.2.6.2 yamt LIST_INSERT_HEAD(&lfp->lf_locallock, new_lop, lo_lckowner); 3267 1.2.6.2 yamt else if ((struct nfsstate *)insert_lop == stp) 3268 1.2.6.2 yamt LIST_INSERT_HEAD(&stp->ls_lock, new_lop, lo_lckowner); 3269 1.2.6.2 yamt else 3270 1.2.6.2 yamt LIST_INSERT_AFTER(insert_lop, new_lop, lo_lckowner); 3271 1.2.6.2 yamt if (stp != NULL) { 3272 1.2.6.2 yamt newnfsstats.srvlocks++; 3273 1.2.6.2 yamt nfsrv_openpluslock++; 3274 1.2.6.2 yamt } 3275 1.2.6.2 yamt } 3276 1.2.6.2 yamt 3277 1.2.6.2 yamt /* 3278 1.2.6.2 yamt * This function updates the locking for a lock owner and given file. It 3279 1.2.6.2 yamt * maintains a list of lock ranges ordered on increasing file offset that 3280 1.2.6.2 yamt * are NFSLCK_READ or NFSLCK_WRITE and non-overlapping (aka POSIX style). 3281 1.2.6.2 yamt * It always adds new_lop to the list and sometimes uses the one pointed 3282 1.2.6.2 yamt * at by other_lopp. 3283 1.2.6.2 yamt */ 3284 1.2.6.2 yamt static void 3285 1.2.6.2 yamt nfsrv_updatelock(struct nfsstate *stp, struct nfslock **new_lopp, 3286 1.2.6.2 yamt struct nfslock **other_lopp, struct nfslockfile *lfp) 3287 1.2.6.2 yamt { 3288 1.2.6.2 yamt struct nfslock *new_lop = *new_lopp; 3289 1.2.6.2 yamt struct nfslock *lop, *tlop, *ilop; 3290 1.2.6.2 yamt struct nfslock *other_lop = *other_lopp; 3291 1.2.6.2 yamt int unlock = 0, myfile = 0; 3292 1.2.6.2 yamt u_int64_t tmp; 3293 1.2.6.2 yamt 3294 1.2.6.2 yamt /* 3295 1.2.6.2 yamt * Work down the list until the lock is merged. 3296 1.2.6.2 yamt */ 3297 1.2.6.2 yamt if (new_lop->lo_flags & NFSLCK_UNLOCK) 3298 1.2.6.2 yamt unlock = 1; 3299 1.2.6.2 yamt if (stp != NULL) { 3300 1.2.6.2 yamt ilop = (struct nfslock *)stp; 3301 1.2.6.2 yamt lop = LIST_FIRST(&stp->ls_lock); 3302 1.2.6.2 yamt } else { 3303 1.2.6.2 yamt ilop = (struct nfslock *)lfp; 3304 1.2.6.2 yamt lop = LIST_FIRST(&lfp->lf_locallock); 3305 1.2.6.2 yamt } 3306 1.2.6.2 yamt while (lop != NULL) { 3307 1.2.6.2 yamt /* 3308 1.2.6.2 yamt * Only check locks for this file that aren't before the start of 3309 1.2.6.2 yamt * new lock's range. 3310 1.2.6.2 yamt */ 3311 1.2.6.2 yamt if (lop->lo_lfp == lfp) { 3312 1.2.6.2 yamt myfile = 1; 3313 1.2.6.2 yamt if (lop->lo_end >= new_lop->lo_first) { 3314 1.2.6.2 yamt if (new_lop->lo_end < lop->lo_first) { 3315 1.2.6.2 yamt /* 3316 1.2.6.2 yamt * If the new lock ends before the start of the 3317 1.2.6.2 yamt * current lock's range, no merge, just insert 3318 1.2.6.2 yamt * the new lock. 3319 1.2.6.2 yamt */ 3320 1.2.6.2 yamt break; 3321 1.2.6.2 yamt } 3322 1.2.6.2 yamt if (new_lop->lo_flags == lop->lo_flags || 3323 1.2.6.2 yamt (new_lop->lo_first <= lop->lo_first && 3324 1.2.6.2 yamt new_lop->lo_end >= lop->lo_end)) { 3325 1.2.6.2 yamt /* 3326 1.2.6.2 yamt * This lock can be absorbed by the new lock/unlock. 3327 1.2.6.2 yamt * This happens when it covers the entire range 3328 1.2.6.2 yamt * of the old lock or is contiguous 3329 1.2.6.2 yamt * with the old lock and is of the same type or an 3330 1.2.6.2 yamt * unlock. 3331 1.2.6.2 yamt */ 3332 1.2.6.2 yamt if (lop->lo_first < new_lop->lo_first) 3333 1.2.6.2 yamt new_lop->lo_first = lop->lo_first; 3334 1.2.6.2 yamt if (lop->lo_end > new_lop->lo_end) 3335 1.2.6.2 yamt new_lop->lo_end = lop->lo_end; 3336 1.2.6.2 yamt tlop = lop; 3337 1.2.6.2 yamt lop = LIST_NEXT(lop, lo_lckowner); 3338 1.2.6.2 yamt nfsrv_freenfslock(tlop); 3339 1.2.6.2 yamt continue; 3340 1.2.6.2 yamt } 3341 1.2.6.2 yamt 3342 1.2.6.2 yamt /* 3343 1.2.6.2 yamt * All these cases are for contiguous locks that are not the 3344 1.2.6.2 yamt * same type, so they can't be merged. 3345 1.2.6.2 yamt */ 3346 1.2.6.2 yamt if (new_lop->lo_first <= lop->lo_first) { 3347 1.2.6.2 yamt /* 3348 1.2.6.2 yamt * This case is where the new lock overlaps with the 3349 1.2.6.2 yamt * first part of the old lock. Move the start of the 3350 1.2.6.2 yamt * old lock to just past the end of the new lock. The 3351 1.2.6.2 yamt * new lock will be inserted in front of the old, since 3352 1.2.6.2 yamt * ilop hasn't been updated. (We are done now.) 3353 1.2.6.2 yamt */ 3354 1.2.6.2 yamt lop->lo_first = new_lop->lo_end; 3355 1.2.6.2 yamt break; 3356 1.2.6.2 yamt } 3357 1.2.6.2 yamt if (new_lop->lo_end >= lop->lo_end) { 3358 1.2.6.2 yamt /* 3359 1.2.6.2 yamt * This case is where the new lock overlaps with the 3360 1.2.6.2 yamt * end of the old lock's range. Move the old lock's 3361 1.2.6.2 yamt * end to just before the new lock's first and insert 3362 1.2.6.2 yamt * the new lock after the old lock. 3363 1.2.6.2 yamt * Might not be done yet, since the new lock could 3364 1.2.6.2 yamt * overlap further locks with higher ranges. 3365 1.2.6.2 yamt */ 3366 1.2.6.2 yamt lop->lo_end = new_lop->lo_first; 3367 1.2.6.2 yamt ilop = lop; 3368 1.2.6.2 yamt lop = LIST_NEXT(lop, lo_lckowner); 3369 1.2.6.2 yamt continue; 3370 1.2.6.2 yamt } 3371 1.2.6.2 yamt /* 3372 1.2.6.2 yamt * The final case is where the new lock's range is in the 3373 1.2.6.2 yamt * middle of the current lock's and splits the current lock 3374 1.2.6.2 yamt * up. Use *other_lopp to handle the second part of the 3375 1.2.6.2 yamt * split old lock range. (We are done now.) 3376 1.2.6.2 yamt * For unlock, we use new_lop as other_lop and tmp, since 3377 1.2.6.2 yamt * other_lop and new_lop are the same for this case. 3378 1.2.6.2 yamt * We noted the unlock case above, so we don't need 3379 1.2.6.2 yamt * new_lop->lo_flags any longer. 3380 1.2.6.2 yamt */ 3381 1.2.6.2 yamt tmp = new_lop->lo_first; 3382 1.2.6.2 yamt if (other_lop == NULL) { 3383 1.2.6.2 yamt if (!unlock) 3384 1.2.6.2 yamt panic("nfsd srv update unlock"); 3385 1.2.6.2 yamt other_lop = new_lop; 3386 1.2.6.2 yamt *new_lopp = NULL; 3387 1.2.6.2 yamt } 3388 1.2.6.2 yamt other_lop->lo_first = new_lop->lo_end; 3389 1.2.6.2 yamt other_lop->lo_end = lop->lo_end; 3390 1.2.6.2 yamt other_lop->lo_flags = lop->lo_flags; 3391 1.2.6.2 yamt other_lop->lo_stp = stp; 3392 1.2.6.2 yamt other_lop->lo_lfp = lfp; 3393 1.2.6.2 yamt lop->lo_end = tmp; 3394 1.2.6.2 yamt nfsrv_insertlock(other_lop, lop, stp, lfp); 3395 1.2.6.2 yamt *other_lopp = NULL; 3396 1.2.6.2 yamt ilop = lop; 3397 1.2.6.2 yamt break; 3398 1.2.6.2 yamt } 3399 1.2.6.2 yamt } 3400 1.2.6.2 yamt ilop = lop; 3401 1.2.6.2 yamt lop = LIST_NEXT(lop, lo_lckowner); 3402 1.2.6.2 yamt if (myfile && (lop == NULL || lop->lo_lfp != lfp)) 3403 1.2.6.2 yamt break; 3404 1.2.6.2 yamt } 3405 1.2.6.2 yamt 3406 1.2.6.2 yamt /* 3407 1.2.6.2 yamt * Insert the new lock in the list at the appropriate place. 3408 1.2.6.2 yamt */ 3409 1.2.6.2 yamt if (!unlock) { 3410 1.2.6.2 yamt nfsrv_insertlock(new_lop, ilop, stp, lfp); 3411 1.2.6.2 yamt *new_lopp = NULL; 3412 1.2.6.2 yamt } 3413 1.2.6.2 yamt } 3414 1.2.6.2 yamt 3415 1.2.6.2 yamt /* 3416 1.2.6.2 yamt * This function handles sequencing of locks, etc. 3417 1.2.6.2 yamt * It returns an error that indicates what the caller should do. 3418 1.2.6.2 yamt */ 3419 1.2.6.2 yamt static int 3420 1.2.6.2 yamt nfsrv_checkseqid(struct nfsrv_descript *nd, u_int32_t seqid, 3421 1.2.6.2 yamt struct nfsstate *stp, struct nfsrvcache *op) 3422 1.2.6.2 yamt { 3423 1.2.6.2 yamt int error = 0; 3424 1.2.6.2 yamt 3425 1.2.6.2 yamt if (op != nd->nd_rp) 3426 1.2.6.2 yamt panic("nfsrvstate checkseqid"); 3427 1.2.6.2 yamt if (!(op->rc_flag & RC_INPROG)) 3428 1.2.6.2 yamt panic("nfsrvstate not inprog"); 3429 1.2.6.2 yamt if (stp->ls_op && stp->ls_op->rc_refcnt <= 0) { 3430 1.2.6.2 yamt printf("refcnt=%d\n", stp->ls_op->rc_refcnt); 3431 1.2.6.2 yamt panic("nfsrvstate op refcnt"); 3432 1.2.6.2 yamt } 3433 1.2.6.2 yamt if ((stp->ls_seq + 1) == seqid) { 3434 1.2.6.2 yamt if (stp->ls_op) 3435 1.2.6.2 yamt nfsrvd_derefcache(stp->ls_op); 3436 1.2.6.2 yamt stp->ls_op = op; 3437 1.2.6.2 yamt nfsrvd_refcache(op); 3438 1.2.6.2 yamt stp->ls_seq = seqid; 3439 1.2.6.2 yamt goto out; 3440 1.2.6.2 yamt } else if (stp->ls_seq == seqid && stp->ls_op && 3441 1.2.6.2 yamt op->rc_xid == stp->ls_op->rc_xid && 3442 1.2.6.2 yamt op->rc_refcnt == 0 && 3443 1.2.6.2 yamt op->rc_reqlen == stp->ls_op->rc_reqlen && 3444 1.2.6.2 yamt op->rc_cksum == stp->ls_op->rc_cksum) { 3445 1.2.6.2 yamt if (stp->ls_op->rc_flag & RC_INPROG) { 3446 1.2.6.2 yamt error = NFSERR_DONTREPLY; 3447 1.2.6.2 yamt goto out; 3448 1.2.6.2 yamt } 3449 1.2.6.2 yamt nd->nd_rp = stp->ls_op; 3450 1.2.6.2 yamt nd->nd_rp->rc_flag |= RC_INPROG; 3451 1.2.6.2 yamt nfsrvd_delcache(op); 3452 1.2.6.2 yamt error = NFSERR_REPLYFROMCACHE; 3453 1.2.6.2 yamt goto out; 3454 1.2.6.2 yamt } 3455 1.2.6.2 yamt error = NFSERR_BADSEQID; 3456 1.2.6.2 yamt 3457 1.2.6.2 yamt out: 3458 1.2.6.2 yamt NFSEXITCODE2(error, nd); 3459 1.2.6.2 yamt return (error); 3460 1.2.6.2 yamt } 3461 1.2.6.2 yamt 3462 1.2.6.2 yamt /* 3463 1.2.6.2 yamt * Get the client ip address for callbacks. If the strings can't be parsed, 3464 1.2.6.2 yamt * just set lc_program to 0 to indicate no callbacks are possible. 3465 1.2.6.2 yamt * (For cases where the address can't be parsed or is 0.0.0.0.0.0, set 3466 1.2.6.2 yamt * the address to the client's transport address. This won't be used 3467 1.2.6.2 yamt * for callbacks, but can be printed out by newnfsstats for info.) 3468 1.2.6.2 yamt * Return error if the xdr can't be parsed, 0 otherwise. 3469 1.2.6.2 yamt */ 3470 1.2.6.2 yamt APPLESTATIC int 3471 1.2.6.2 yamt nfsrv_getclientipaddr(struct nfsrv_descript *nd, struct nfsclient *clp) 3472 1.2.6.2 yamt { 3473 1.2.6.2 yamt u_int32_t *tl; 3474 1.2.6.2 yamt u_char *cp, *cp2; 3475 1.2.6.2 yamt int i, j; 3476 1.2.6.2 yamt struct sockaddr_in *rad, *sad; 3477 1.2.6.2 yamt u_char protocol[5], addr[24]; 3478 1.2.6.2 yamt int error = 0, cantparse = 0; 3479 1.2.6.2 yamt union { 3480 1.2.6.2 yamt u_long ival; 3481 1.2.6.2 yamt u_char cval[4]; 3482 1.2.6.2 yamt } ip; 3483 1.2.6.2 yamt union { 3484 1.2.6.2 yamt u_short sval; 3485 1.2.6.2 yamt u_char cval[2]; 3486 1.2.6.2 yamt } port; 3487 1.2.6.2 yamt 3488 1.2.6.2 yamt rad = NFSSOCKADDR(clp->lc_req.nr_nam, struct sockaddr_in *); 3489 1.2.6.2 yamt rad->sin_family = AF_INET; 3490 1.2.6.2 yamt rad->sin_len = sizeof (struct sockaddr_in); 3491 1.2.6.2 yamt rad->sin_addr.s_addr = 0; 3492 1.2.6.2 yamt rad->sin_port = 0; 3493 1.2.6.2 yamt clp->lc_req.nr_client = NULL; 3494 1.2.6.2 yamt clp->lc_req.nr_lock = 0; 3495 1.2.6.2 yamt NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3496 1.2.6.2 yamt i = fxdr_unsigned(int, *tl); 3497 1.2.6.2 yamt if (i >= 3 && i <= 4) { 3498 1.2.6.2 yamt error = nfsrv_mtostr(nd, protocol, i); 3499 1.2.6.2 yamt if (error) 3500 1.2.6.2 yamt goto nfsmout; 3501 1.2.6.2 yamt if (!strcmp(protocol, "tcp")) { 3502 1.2.6.2 yamt clp->lc_flags |= LCL_TCPCALLBACK; 3503 1.2.6.2 yamt clp->lc_req.nr_sotype = SOCK_STREAM; 3504 1.2.6.2 yamt clp->lc_req.nr_soproto = IPPROTO_TCP; 3505 1.2.6.2 yamt } else if (!strcmp(protocol, "udp")) { 3506 1.2.6.2 yamt clp->lc_req.nr_sotype = SOCK_DGRAM; 3507 1.2.6.2 yamt clp->lc_req.nr_soproto = IPPROTO_UDP; 3508 1.2.6.2 yamt } else { 3509 1.2.6.2 yamt cantparse = 1; 3510 1.2.6.2 yamt } 3511 1.2.6.2 yamt } else { 3512 1.2.6.2 yamt cantparse = 1; 3513 1.2.6.2 yamt if (i > 0) { 3514 1.2.6.2 yamt error = nfsm_advance(nd, NFSM_RNDUP(i), -1); 3515 1.2.6.2 yamt if (error) 3516 1.2.6.2 yamt goto nfsmout; 3517 1.2.6.2 yamt } 3518 1.2.6.2 yamt } 3519 1.2.6.2 yamt NFSM_DISSECT(tl, u_int32_t *, NFSX_UNSIGNED); 3520 1.2.6.2 yamt i = fxdr_unsigned(int, *tl); 3521 1.2.6.2 yamt if (i < 0) { 3522 1.2.6.2 yamt error = NFSERR_BADXDR; 3523 1.2.6.2 yamt goto nfsmout; 3524 1.2.6.2 yamt } else if (i == 0) { 3525 1.2.6.2 yamt cantparse = 1; 3526 1.2.6.2 yamt } else if (!cantparse && i <= 23 && i >= 11) { 3527 1.2.6.2 yamt error = nfsrv_mtostr(nd, addr, i); 3528 1.2.6.2 yamt if (error) 3529 1.2.6.2 yamt goto nfsmout; 3530 1.2.6.2 yamt 3531 1.2.6.2 yamt /* 3532 1.2.6.2 yamt * Parse out the address fields. We expect 6 decimal numbers 3533 1.2.6.2 yamt * separated by '.'s. 3534 1.2.6.2 yamt */ 3535 1.2.6.2 yamt cp = addr; 3536 1.2.6.2 yamt i = 0; 3537 1.2.6.2 yamt while (*cp && i < 6) { 3538 1.2.6.2 yamt cp2 = cp; 3539 1.2.6.2 yamt while (*cp2 && *cp2 != '.') 3540 1.2.6.2 yamt cp2++; 3541 1.2.6.2 yamt if (*cp2) 3542 1.2.6.2 yamt *cp2++ = '\0'; 3543 1.2.6.2 yamt else if (i != 5) { 3544 1.2.6.2 yamt cantparse = 1; 3545 1.2.6.2 yamt break; 3546 1.2.6.2 yamt } 3547 1.2.6.2 yamt j = nfsrv_getipnumber(cp); 3548 1.2.6.2 yamt if (j >= 0) { 3549 1.2.6.2 yamt if (i < 4) 3550 1.2.6.2 yamt ip.cval[3 - i] = j; 3551 1.2.6.2 yamt else 3552 1.2.6.2 yamt port.cval[5 - i] = j; 3553 1.2.6.2 yamt } else { 3554 1.2.6.2 yamt cantparse = 1; 3555 1.2.6.2 yamt break; 3556 1.2.6.2 yamt } 3557 1.2.6.2 yamt cp = cp2; 3558 1.2.6.2 yamt i++; 3559 1.2.6.2 yamt } 3560 1.2.6.2 yamt if (!cantparse) { 3561 1.2.6.2 yamt if (ip.ival != 0x0) { 3562 1.2.6.2 yamt rad->sin_addr.s_addr = htonl(ip.ival); 3563 1.2.6.2 yamt rad->sin_port = htons(port.sval); 3564 1.2.6.2 yamt } else { 3565 1.2.6.2 yamt cantparse = 1; 3566 1.2.6.2 yamt } 3567 1.2.6.2 yamt } 3568 1.2.6.2 yamt } else { 3569 1.2.6.2 yamt cantparse = 1; 3570 1.2.6.2 yamt if (i > 0) { 3571 1.2.6.2 yamt error = nfsm_advance(nd, NFSM_RNDUP(i), -1); 3572 1.2.6.2 yamt if (error) 3573 1.2.6.2 yamt goto nfsmout; 3574 1.2.6.2 yamt } 3575 1.2.6.2 yamt } 3576 1.2.6.2 yamt if (cantparse) { 3577 1.2.6.2 yamt sad = NFSSOCKADDR(nd->nd_nam, struct sockaddr_in *); 3578 1.2.6.2 yamt rad->sin_addr.s_addr = sad->sin_addr.s_addr; 3579 1.2.6.2 yamt rad->sin_port = 0x0; 3580 1.2.6.2 yamt clp->lc_program = 0; 3581 1.2.6.2 yamt } 3582 1.2.6.2 yamt nfsmout: 3583 1.2.6.2 yamt NFSEXITCODE2(error, nd); 3584 1.2.6.2 yamt return (error); 3585 1.2.6.2 yamt } 3586 1.2.6.2 yamt 3587 1.2.6.2 yamt /* 3588 1.2.6.2 yamt * Turn a string of up to three decimal digits into a number. Return -1 upon 3589 1.2.6.2 yamt * error. 3590 1.2.6.2 yamt */ 3591 1.2.6.2 yamt static int 3592 1.2.6.2 yamt nfsrv_getipnumber(u_char *cp) 3593 1.2.6.2 yamt { 3594 1.2.6.2 yamt int i = 0, j = 0; 3595 1.2.6.2 yamt 3596 1.2.6.2 yamt while (*cp) { 3597 1.2.6.2 yamt if (j > 2 || *cp < '0' || *cp > '9') 3598 1.2.6.2 yamt return (-1); 3599 1.2.6.2 yamt i *= 10; 3600 1.2.6.2 yamt i += (*cp - '0'); 3601 1.2.6.2 yamt cp++; 3602 1.2.6.2 yamt j++; 3603 1.2.6.2 yamt } 3604 1.2.6.2 yamt if (i < 256) 3605 1.2.6.2 yamt return (i); 3606 1.2.6.2 yamt return (-1); 3607 1.2.6.2 yamt } 3608 1.2.6.2 yamt 3609 1.2.6.2 yamt /* 3610 1.2.6.2 yamt * This function checks for restart conditions. 3611 1.2.6.2 yamt */ 3612 1.2.6.2 yamt static int 3613 1.2.6.2 yamt nfsrv_checkrestart(nfsquad_t clientid, u_int32_t flags, 3614 1.2.6.2 yamt nfsv4stateid_t *stateidp, int specialid) 3615 1.2.6.2 yamt { 3616 1.2.6.2 yamt int ret = 0; 3617 1.2.6.2 yamt 3618 1.2.6.2 yamt /* 3619 1.2.6.2 yamt * First check for a server restart. Open, LockT, ReleaseLockOwner 3620 1.2.6.2 yamt * and DelegPurge have a clientid, the rest a stateid. 3621 1.2.6.2 yamt */ 3622 1.2.6.2 yamt if (flags & 3623 1.2.6.2 yamt (NFSLCK_OPEN | NFSLCK_TEST | NFSLCK_RELEASE | NFSLCK_DELEGPURGE)) { 3624 1.2.6.2 yamt if (clientid.lval[0] != nfsrvboottime) { 3625 1.2.6.2 yamt ret = NFSERR_STALECLIENTID; 3626 1.2.6.2 yamt goto out; 3627 1.2.6.2 yamt } 3628 1.2.6.2 yamt } else if (stateidp->other[0] != nfsrvboottime && 3629 1.2.6.2 yamt specialid == 0) { 3630 1.2.6.2 yamt ret = NFSERR_STALESTATEID; 3631 1.2.6.2 yamt goto out; 3632 1.2.6.2 yamt } 3633 1.2.6.2 yamt 3634 1.2.6.2 yamt /* 3635 1.2.6.2 yamt * Read, Write, Setattr and LockT can return NFSERR_GRACE and do 3636 1.2.6.2 yamt * not use a lock/open owner seqid#, so the check can be done now. 3637 1.2.6.2 yamt * (The others will be checked, as required, later.) 3638 1.2.6.2 yamt */ 3639 1.2.6.2 yamt if (!(flags & (NFSLCK_CHECK | NFSLCK_TEST))) 3640 1.2.6.2 yamt goto out; 3641 1.2.6.2 yamt 3642 1.2.6.2 yamt NFSLOCKSTATE(); 3643 1.2.6.2 yamt ret = nfsrv_checkgrace(flags); 3644 1.2.6.2 yamt NFSUNLOCKSTATE(); 3645 1.2.6.2 yamt 3646 1.2.6.2 yamt out: 3647 1.2.6.2 yamt NFSEXITCODE(ret); 3648 1.2.6.2 yamt return (ret); 3649 1.2.6.2 yamt } 3650 1.2.6.2 yamt 3651 1.2.6.2 yamt /* 3652 1.2.6.2 yamt * Check for grace. 3653 1.2.6.2 yamt */ 3654 1.2.6.2 yamt static int 3655 1.2.6.2 yamt nfsrv_checkgrace(u_int32_t flags) 3656 1.2.6.2 yamt { 3657 1.2.6.2 yamt int error = 0; 3658 1.2.6.2 yamt 3659 1.2.6.2 yamt if (nfsrv_stablefirst.nsf_flags & NFSNSF_GRACEOVER) { 3660 1.2.6.2 yamt if (flags & NFSLCK_RECLAIM) { 3661 1.2.6.2 yamt error = NFSERR_NOGRACE; 3662 1.2.6.2 yamt goto out; 3663 1.2.6.2 yamt } 3664 1.2.6.2 yamt } else { 3665 1.2.6.2 yamt if (!(flags & NFSLCK_RECLAIM)) { 3666 1.2.6.2 yamt error = NFSERR_GRACE; 3667 1.2.6.2 yamt goto out; 3668 1.2.6.2 yamt } 3669 1.2.6.2 yamt 3670 1.2.6.2 yamt /* 3671 1.2.6.2 yamt * If grace is almost over and we are still getting Reclaims, 3672 1.2.6.2 yamt * extend grace a bit. 3673 1.2.6.2 yamt */ 3674 1.2.6.2 yamt if ((NFSD_MONOSEC + NFSRV_LEASEDELTA) > 3675 1.2.6.2 yamt nfsrv_stablefirst.nsf_eograce) 3676 1.2.6.2 yamt nfsrv_stablefirst.nsf_eograce = NFSD_MONOSEC + 3677 1.2.6.2 yamt NFSRV_LEASEDELTA; 3678 1.2.6.2 yamt } 3679 1.2.6.2 yamt 3680 1.2.6.2 yamt out: 3681 1.2.6.2 yamt NFSEXITCODE(error); 3682 1.2.6.2 yamt return (error); 3683 1.2.6.2 yamt } 3684 1.2.6.2 yamt 3685 1.2.6.2 yamt /* 3686 1.2.6.2 yamt * Do a server callback. 3687 1.2.6.2 yamt */ 3688 1.2.6.2 yamt static int 3689 1.2.6.2 yamt nfsrv_docallback(struct nfsclient *clp, int procnum, 3690 1.2.6.2 yamt nfsv4stateid_t *stateidp, int trunc, fhandle_t *fhp, 3691 1.2.6.2 yamt struct nfsvattr *nap, nfsattrbit_t *attrbitp, NFSPROC_T *p) 3692 1.2.6.2 yamt { 3693 1.2.6.2 yamt mbuf_t m; 3694 1.2.6.2 yamt u_int32_t *tl; 3695 1.2.6.2 yamt struct nfsrv_descript nfsd, *nd = &nfsd; 3696 1.2.6.2 yamt struct ucred *cred; 3697 1.2.6.2 yamt int error = 0; 3698 1.2.6.2 yamt u_int32_t callback; 3699 1.2.6.2 yamt 3700 1.2.6.2 yamt cred = newnfs_getcred(); 3701 1.2.6.2 yamt NFSLOCKSTATE(); /* mostly for lc_cbref++ */ 3702 1.2.6.2 yamt if (clp->lc_flags & LCL_NEEDSCONFIRM) { 3703 1.2.6.2 yamt NFSUNLOCKSTATE(); 3704 1.2.6.2 yamt panic("docallb"); 3705 1.2.6.2 yamt } 3706 1.2.6.2 yamt clp->lc_cbref++; 3707 1.2.6.2 yamt 3708 1.2.6.2 yamt /* 3709 1.2.6.2 yamt * Fill the callback program# and version into the request 3710 1.2.6.2 yamt * structure for newnfs_connect() to use. 3711 1.2.6.2 yamt */ 3712 1.2.6.2 yamt clp->lc_req.nr_prog = clp->lc_program; 3713 1.2.6.2 yamt clp->lc_req.nr_vers = NFSV4_CBVERS; 3714 1.2.6.2 yamt 3715 1.2.6.2 yamt /* 3716 1.2.6.2 yamt * First, fill in some of the fields of nd and cr. 3717 1.2.6.2 yamt */ 3718 1.2.6.2 yamt nd->nd_flag = ND_NFSV4; 3719 1.2.6.2 yamt if (clp->lc_flags & LCL_GSS) 3720 1.2.6.2 yamt nd->nd_flag |= ND_KERBV; 3721 1.2.6.2 yamt nd->nd_repstat = 0; 3722 1.2.6.2 yamt cred->cr_uid = clp->lc_uid; 3723 1.2.6.2 yamt cred->cr_gid = clp->lc_gid; 3724 1.2.6.2 yamt callback = clp->lc_callback; 3725 1.2.6.2 yamt NFSUNLOCKSTATE(); 3726 1.2.6.2 yamt cred->cr_ngroups = 1; 3727 1.2.6.2 yamt 3728 1.2.6.2 yamt /* 3729 1.2.6.2 yamt * Get the first mbuf for the request. 3730 1.2.6.2 yamt */ 3731 1.2.6.2 yamt MGET(m, M_WAITOK, MT_DATA); 3732 1.2.6.2 yamt mbuf_setlen(m, 0); 3733 1.2.6.2 yamt nd->nd_mreq = nd->nd_mb = m; 3734 1.2.6.2 yamt nd->nd_bpos = NFSMTOD(m, caddr_t); 3735 1.2.6.2 yamt 3736 1.2.6.2 yamt /* 3737 1.2.6.2 yamt * and build the callback request. 3738 1.2.6.2 yamt */ 3739 1.2.6.2 yamt if (procnum == NFSV4OP_CBGETATTR) { 3740 1.2.6.2 yamt nd->nd_procnum = NFSV4PROC_CBCOMPOUND; 3741 1.2.6.2 yamt (void) nfsm_strtom(nd, "CB Getattr", 10); 3742 1.2.6.2 yamt NFSM_BUILD(tl, u_int32_t *, 4 * NFSX_UNSIGNED); 3743 1.2.6.2 yamt *tl++ = txdr_unsigned(NFSV4_MINORVERSION); 3744 1.2.6.2 yamt *tl++ = txdr_unsigned(callback); 3745 1.2.6.2 yamt *tl++ = txdr_unsigned(1); 3746 1.2.6.2 yamt *tl = txdr_unsigned(NFSV4OP_CBGETATTR); 3747 1.2.6.2 yamt (void) nfsm_fhtom(nd, (u_int8_t *)fhp, NFSX_MYFH, 0); 3748 1.2.6.2 yamt (void) nfsrv_putattrbit(nd, attrbitp); 3749 1.2.6.2 yamt } else if (procnum == NFSV4OP_CBRECALL) { 3750 1.2.6.2 yamt nd->nd_procnum = NFSV4PROC_CBCOMPOUND; 3751 1.2.6.2 yamt (void) nfsm_strtom(nd, "CB Recall", 9); 3752 1.2.6.2 yamt NFSM_BUILD(tl, u_int32_t *, 5 * NFSX_UNSIGNED + NFSX_STATEID); 3753 1.2.6.2 yamt *tl++ = txdr_unsigned(NFSV4_MINORVERSION); 3754 1.2.6.2 yamt *tl++ = txdr_unsigned(callback); 3755 1.2.6.2 yamt *tl++ = txdr_unsigned(1); 3756 1.2.6.2 yamt *tl++ = txdr_unsigned(NFSV4OP_CBRECALL); 3757 1.2.6.2 yamt *tl++ = txdr_unsigned(stateidp->seqid); 3758 1.2.6.2 yamt NFSBCOPY((caddr_t)stateidp->other, (caddr_t)tl, 3759 1.2.6.2 yamt NFSX_STATEIDOTHER); 3760 1.2.6.2 yamt tl += (NFSX_STATEIDOTHER / NFSX_UNSIGNED); 3761 1.2.6.2 yamt if (trunc) 3762 1.2.6.2 yamt *tl = newnfs_true; 3763 1.2.6.2 yamt else 3764 1.2.6.2 yamt *tl = newnfs_false; 3765 1.2.6.2 yamt (void) nfsm_fhtom(nd, (u_int8_t *)fhp, NFSX_MYFH, 0); 3766 1.2.6.2 yamt } else { 3767 1.2.6.2 yamt nd->nd_procnum = NFSV4PROC_CBNULL; 3768 1.2.6.2 yamt } 3769 1.2.6.2 yamt 3770 1.2.6.2 yamt /* 3771 1.2.6.2 yamt * Call newnfs_connect(), as required, and then newnfs_request(). 3772 1.2.6.2 yamt */ 3773 1.2.6.2 yamt (void) newnfs_sndlock(&clp->lc_req.nr_lock); 3774 1.2.6.2 yamt if (clp->lc_req.nr_client == NULL) { 3775 1.2.6.2 yamt if (nd->nd_procnum == NFSV4PROC_CBNULL) 3776 1.2.6.2 yamt error = newnfs_connect(NULL, &clp->lc_req, cred, 3777 1.2.6.2 yamt NULL, 1); 3778 1.2.6.2 yamt else 3779 1.2.6.2 yamt error = newnfs_connect(NULL, &clp->lc_req, cred, 3780 1.2.6.2 yamt NULL, 3); 3781 1.2.6.2 yamt } 3782 1.2.6.2 yamt newnfs_sndunlock(&clp->lc_req.nr_lock); 3783 1.2.6.2 yamt if (!error) { 3784 1.2.6.2 yamt error = newnfs_request(nd, NULL, clp, &clp->lc_req, NULL, 3785 1.2.6.2 yamt NULL, cred, clp->lc_program, NFSV4_CBVERS, NULL, 1, NULL, 3786 1.2.6.2 yamt NULL); 3787 1.2.6.2 yamt } 3788 1.2.6.2 yamt NFSFREECRED(cred); 3789 1.2.6.2 yamt 3790 1.2.6.2 yamt /* 3791 1.2.6.2 yamt * If error is set here, the Callback path isn't working 3792 1.2.6.2 yamt * properly, so twiddle the appropriate LCL_ flags. 3793 1.2.6.2 yamt * (nd_repstat != 0 indicates the Callback path is working, 3794 1.2.6.2 yamt * but the callback failed on the client.) 3795 1.2.6.2 yamt */ 3796 1.2.6.2 yamt if (error) { 3797 1.2.6.2 yamt /* 3798 1.2.6.2 yamt * Mark the callback pathway down, which disabled issuing 3799 1.2.6.2 yamt * of delegations and gets Renew to return NFSERR_CBPATHDOWN. 3800 1.2.6.2 yamt */ 3801 1.2.6.2 yamt NFSLOCKSTATE(); 3802 1.2.6.2 yamt clp->lc_flags |= LCL_CBDOWN; 3803 1.2.6.2 yamt NFSUNLOCKSTATE(); 3804 1.2.6.2 yamt } else { 3805 1.2.6.2 yamt /* 3806 1.2.6.2 yamt * Callback worked. If the callback path was down, disable 3807 1.2.6.2 yamt * callbacks, so no more delegations will be issued. (This 3808 1.2.6.2 yamt * is done on the assumption that the callback pathway is 3809 1.2.6.2 yamt * flakey.) 3810 1.2.6.2 yamt */ 3811 1.2.6.2 yamt NFSLOCKSTATE(); 3812 1.2.6.2 yamt if (clp->lc_flags & LCL_CBDOWN) 3813 1.2.6.2 yamt clp->lc_flags &= ~(LCL_CBDOWN | LCL_CALLBACKSON); 3814 1.2.6.2 yamt NFSUNLOCKSTATE(); 3815 1.2.6.2 yamt if (nd->nd_repstat) 3816 1.2.6.2 yamt error = nd->nd_repstat; 3817 1.2.6.2 yamt else if (procnum == NFSV4OP_CBGETATTR) 3818 1.2.6.2 yamt error = nfsv4_loadattr(nd, NULL, nap, NULL, NULL, 0, 3819 1.2.6.2 yamt NULL, NULL, NULL, NULL, NULL, 0, NULL, NULL, NULL, 3820 1.2.6.2 yamt p, NULL); 3821 1.2.6.2 yamt mbuf_freem(nd->nd_mrep); 3822 1.2.6.2 yamt } 3823 1.2.6.2 yamt NFSLOCKSTATE(); 3824 1.2.6.2 yamt clp->lc_cbref--; 3825 1.2.6.2 yamt if ((clp->lc_flags & LCL_WAKEUPWANTED) && clp->lc_cbref == 0) { 3826 1.2.6.2 yamt clp->lc_flags &= ~LCL_WAKEUPWANTED; 3827 1.2.6.2 yamt wakeup(clp); 3828 1.2.6.2 yamt } 3829 1.2.6.2 yamt NFSUNLOCKSTATE(); 3830 1.2.6.2 yamt 3831 1.2.6.2 yamt NFSEXITCODE(error); 3832 1.2.6.2 yamt return (error); 3833 1.2.6.2 yamt } 3834 1.2.6.2 yamt 3835 1.2.6.2 yamt /* 3836 1.2.6.2 yamt * Return the next index# for a clientid. Mostly just increment and return 3837 1.2.6.2 yamt * the next one, but... if the 32bit unsigned does actually wrap around, 3838 1.2.6.2 yamt * it should be rebooted. 3839 1.2.6.2 yamt * At an average rate of one new client per second, it will wrap around in 3840 1.2.6.2 yamt * approximately 136 years. (I think the server will have been shut 3841 1.2.6.2 yamt * down or rebooted before then.) 3842 1.2.6.2 yamt */ 3843 1.2.6.2 yamt static u_int32_t 3844 1.2.6.2 yamt nfsrv_nextclientindex(void) 3845 1.2.6.2 yamt { 3846 1.2.6.2 yamt static u_int32_t client_index = 0; 3847 1.2.6.2 yamt 3848 1.2.6.2 yamt client_index++; 3849 1.2.6.2 yamt if (client_index != 0) 3850 1.2.6.2 yamt return (client_index); 3851 1.2.6.2 yamt 3852 1.2.6.2 yamt printf("%s: out of clientids\n", __func__); 3853 1.2.6.2 yamt return (client_index); 3854 1.2.6.2 yamt } 3855 1.2.6.2 yamt 3856 1.2.6.2 yamt /* 3857 1.2.6.2 yamt * Return the next index# for a stateid. Mostly just increment and return 3858 1.2.6.2 yamt * the next one, but... if the 32bit unsigned does actually wrap around 3859 1.2.6.2 yamt * (will a BSD server stay up that long?), find 3860 1.2.6.2 yamt * new start and end values. 3861 1.2.6.2 yamt */ 3862 1.2.6.2 yamt static u_int32_t 3863 1.2.6.2 yamt nfsrv_nextstateindex(struct nfsclient *clp) 3864 1.2.6.2 yamt { 3865 1.2.6.2 yamt struct nfsstate *stp; 3866 1.2.6.2 yamt int i; 3867 1.2.6.2 yamt u_int32_t canuse, min_index, max_index; 3868 1.2.6.2 yamt 3869 1.2.6.2 yamt if (!(clp->lc_flags & LCL_INDEXNOTOK)) { 3870 1.2.6.2 yamt clp->lc_stateindex++; 3871 1.2.6.2 yamt if (clp->lc_stateindex != clp->lc_statemaxindex) 3872 1.2.6.2 yamt return (clp->lc_stateindex); 3873 1.2.6.2 yamt } 3874 1.2.6.2 yamt 3875 1.2.6.2 yamt /* 3876 1.2.6.2 yamt * Yuck, we've hit the end. 3877 1.2.6.2 yamt * Look for a new min and max. 3878 1.2.6.2 yamt */ 3879 1.2.6.2 yamt min_index = 0; 3880 1.2.6.2 yamt max_index = 0xffffffff; 3881 1.2.6.2 yamt for (i = 0; i < NFSSTATEHASHSIZE; i++) { 3882 1.2.6.2 yamt LIST_FOREACH(stp, &clp->lc_stateid[i], ls_hash) { 3883 1.2.6.2 yamt if (stp->ls_stateid.other[2] > 0x80000000) { 3884 1.2.6.2 yamt if (stp->ls_stateid.other[2] < max_index) 3885 1.2.6.2 yamt max_index = stp->ls_stateid.other[2]; 3886 1.2.6.2 yamt } else { 3887 1.2.6.2 yamt if (stp->ls_stateid.other[2] > min_index) 3888 1.2.6.2 yamt min_index = stp->ls_stateid.other[2]; 3889 1.2.6.2 yamt } 3890 1.2.6.2 yamt } 3891 1.2.6.2 yamt } 3892 1.2.6.2 yamt 3893 1.2.6.2 yamt /* 3894 1.2.6.2 yamt * Yikes, highly unlikely, but I'll handle it anyhow. 3895 1.2.6.2 yamt */ 3896 1.2.6.2 yamt if (min_index == 0x80000000 && max_index == 0x80000001) { 3897 1.2.6.2 yamt canuse = 0; 3898 1.2.6.2 yamt /* 3899 1.2.6.2 yamt * Loop around until we find an unused entry. Return that 3900 1.2.6.2 yamt * and set LCL_INDEXNOTOK, so the search will continue next time. 3901 1.2.6.2 yamt * (This is one of those rare cases where a goto is the 3902 1.2.6.2 yamt * cleanest way to code the loop.) 3903 1.2.6.2 yamt */ 3904 1.2.6.2 yamt tryagain: 3905 1.2.6.2 yamt for (i = 0; i < NFSSTATEHASHSIZE; i++) { 3906 1.2.6.2 yamt LIST_FOREACH(stp, &clp->lc_stateid[i], ls_hash) { 3907 1.2.6.2 yamt if (stp->ls_stateid.other[2] == canuse) { 3908 1.2.6.2 yamt canuse++; 3909 1.2.6.2 yamt goto tryagain; 3910 1.2.6.2 yamt } 3911 1.2.6.2 yamt } 3912 1.2.6.2 yamt } 3913 1.2.6.2 yamt clp->lc_flags |= LCL_INDEXNOTOK; 3914 1.2.6.2 yamt return (canuse); 3915 1.2.6.2 yamt } 3916 1.2.6.2 yamt 3917 1.2.6.2 yamt /* 3918 1.2.6.2 yamt * Ok to start again from min + 1. 3919 1.2.6.2 yamt */ 3920 1.2.6.2 yamt clp->lc_stateindex = min_index + 1; 3921 1.2.6.2 yamt clp->lc_statemaxindex = max_index; 3922 1.2.6.2 yamt clp->lc_flags &= ~LCL_INDEXNOTOK; 3923 1.2.6.2 yamt return (clp->lc_stateindex); 3924 1.2.6.2 yamt } 3925 1.2.6.2 yamt 3926 1.2.6.2 yamt /* 3927 1.2.6.2 yamt * The following functions handle the stable storage file that deals with 3928 1.2.6.2 yamt * the edge conditions described in RFC3530 Sec. 8.6.3. 3929 1.2.6.2 yamt * The file is as follows: 3930 1.2.6.2 yamt * - a single record at the beginning that has the lease time of the 3931 1.2.6.2 yamt * previous server instance (before the last reboot) and the nfsrvboottime 3932 1.2.6.2 yamt * values for the previous server boots. 3933 1.2.6.2 yamt * These previous boot times are used to ensure that the current 3934 1.2.6.2 yamt * nfsrvboottime does not, somehow, get set to a previous one. 3935 1.2.6.2 yamt * (This is important so that Stale ClientIDs and StateIDs can 3936 1.2.6.2 yamt * be recognized.) 3937 1.2.6.2 yamt * The number of previous nfsvrboottime values preceeds the list. 3938 1.2.6.2 yamt * - followed by some number of appended records with: 3939 1.2.6.2 yamt * - client id string 3940 1.2.6.2 yamt * - flag that indicates it is a record revoking state via lease 3941 1.2.6.2 yamt * expiration or similar 3942 1.2.6.2 yamt * OR has successfully acquired state. 3943 1.2.6.2 yamt * These structures vary in length, with the client string at the end, up 3944 1.2.6.2 yamt * to NFSV4_OPAQUELIMIT in size. 3945 1.2.6.2 yamt * 3946 1.2.6.2 yamt * At the end of the grace period, the file is truncated, the first 3947 1.2.6.2 yamt * record is rewritten with updated information and any acquired state 3948 1.2.6.2 yamt * records for successful reclaims of state are written. 3949 1.2.6.2 yamt * 3950 1.2.6.2 yamt * Subsequent records are appended when the first state is issued to 3951 1.2.6.2 yamt * a client and when state is revoked for a client. 3952 1.2.6.2 yamt * 3953 1.2.6.2 yamt * When reading the file in, state issued records that come later in 3954 1.2.6.2 yamt * the file override older ones, since the append log is in cronological order. 3955 1.2.6.2 yamt * If, for some reason, the file can't be read, the grace period is 3956 1.2.6.2 yamt * immediately terminated and all reclaims get NFSERR_NOGRACE. 3957 1.2.6.2 yamt */ 3958 1.2.6.2 yamt 3959 1.2.6.2 yamt /* 3960 1.2.6.2 yamt * Read in the stable storage file. Called by nfssvc() before the nfsd 3961 1.2.6.2 yamt * processes start servicing requests. 3962 1.2.6.2 yamt */ 3963 1.2.6.2 yamt APPLESTATIC void 3964 1.2.6.2 yamt nfsrv_setupstable(NFSPROC_T *p) 3965 1.2.6.2 yamt { 3966 1.2.6.2 yamt struct nfsrv_stablefirst *sf = &nfsrv_stablefirst; 3967 1.2.6.2 yamt struct nfsrv_stable *sp, *nsp; 3968 1.2.6.2 yamt struct nfst_rec *tsp; 3969 1.2.6.2 yamt int error, i, tryagain; 3970 1.2.6.2 yamt off_t off = 0; 3971 1.2.6.2 yamt ssize_t aresid, len; 3972 1.2.6.2 yamt 3973 1.2.6.2 yamt /* 3974 1.2.6.2 yamt * If NFSNSF_UPDATEDONE is set, this is a restart of the nfsds without 3975 1.2.6.2 yamt * a reboot, so state has not been lost. 3976 1.2.6.2 yamt */ 3977 1.2.6.2 yamt if (sf->nsf_flags & NFSNSF_UPDATEDONE) 3978 1.2.6.2 yamt return; 3979 1.2.6.2 yamt /* 3980 1.2.6.2 yamt * Set Grace over just until the file reads successfully. 3981 1.2.6.2 yamt */ 3982 1.2.6.2 yamt nfsrvboottime = time_second; 3983 1.2.6.2 yamt LIST_INIT(&sf->nsf_head); 3984 1.2.6.2 yamt sf->nsf_flags = (NFSNSF_GRACEOVER | NFSNSF_NEEDLOCK); 3985 1.2.6.2 yamt sf->nsf_eograce = NFSD_MONOSEC + NFSRV_LEASEDELTA; 3986 1.2.6.2 yamt if (sf->nsf_fp == NULL) 3987 1.2.6.2 yamt return; 3988 1.2.6.2 yamt error = NFSD_RDWR(UIO_READ, NFSFPVNODE(sf->nsf_fp), 3989 1.2.6.2 yamt (caddr_t)&sf->nsf_rec, sizeof (struct nfsf_rec), off, UIO_SYSSPACE, 3990 1.2.6.2 yamt 0, NFSFPCRED(sf->nsf_fp), &aresid, p); 3991 1.2.6.2 yamt if (error || aresid || sf->nsf_numboots == 0 || 3992 1.2.6.2 yamt sf->nsf_numboots > NFSNSF_MAXNUMBOOTS) 3993 1.2.6.2 yamt return; 3994 1.2.6.2 yamt 3995 1.2.6.2 yamt /* 3996 1.2.6.2 yamt * Now, read in the boottimes. 3997 1.2.6.2 yamt */ 3998 1.2.6.2 yamt sf->nsf_bootvals = (time_t *)malloc((sf->nsf_numboots + 1) * 3999 1.2.6.2 yamt sizeof (time_t), M_TEMP, M_WAITOK); 4000 1.2.6.2 yamt off = sizeof (struct nfsf_rec); 4001 1.2.6.2 yamt error = NFSD_RDWR(UIO_READ, NFSFPVNODE(sf->nsf_fp), 4002 1.2.6.2 yamt (caddr_t)sf->nsf_bootvals, sf->nsf_numboots * sizeof (time_t), off, 4003 1.2.6.2 yamt UIO_SYSSPACE, 0, NFSFPCRED(sf->nsf_fp), &aresid, p); 4004 1.2.6.2 yamt if (error || aresid) { 4005 1.2.6.2 yamt free((caddr_t)sf->nsf_bootvals, M_TEMP); 4006 1.2.6.2 yamt sf->nsf_bootvals = NULL; 4007 1.2.6.2 yamt return; 4008 1.2.6.2 yamt } 4009 1.2.6.2 yamt 4010 1.2.6.2 yamt /* 4011 1.2.6.2 yamt * Make sure this nfsrvboottime is different from all recorded 4012 1.2.6.2 yamt * previous ones. 4013 1.2.6.2 yamt */ 4014 1.2.6.2 yamt do { 4015 1.2.6.2 yamt tryagain = 0; 4016 1.2.6.2 yamt for (i = 0; i < sf->nsf_numboots; i++) { 4017 1.2.6.2 yamt if (nfsrvboottime == sf->nsf_bootvals[i]) { 4018 1.2.6.2 yamt nfsrvboottime++; 4019 1.2.6.2 yamt tryagain = 1; 4020 1.2.6.2 yamt break; 4021 1.2.6.2 yamt } 4022 1.2.6.2 yamt } 4023 1.2.6.2 yamt } while (tryagain); 4024 1.2.6.2 yamt 4025 1.2.6.2 yamt sf->nsf_flags |= NFSNSF_OK; 4026 1.2.6.2 yamt off += (sf->nsf_numboots * sizeof (time_t)); 4027 1.2.6.2 yamt 4028 1.2.6.2 yamt /* 4029 1.2.6.2 yamt * Read through the file, building a list of records for grace 4030 1.2.6.2 yamt * checking. 4031 1.2.6.2 yamt * Each record is between sizeof (struct nfst_rec) and 4032 1.2.6.2 yamt * sizeof (struct nfst_rec) + NFSV4_OPAQUELIMIT - 1 4033 1.2.6.2 yamt * and is actually sizeof (struct nfst_rec) + nst_len - 1. 4034 1.2.6.2 yamt */ 4035 1.2.6.2 yamt tsp = (struct nfst_rec *)malloc(sizeof (struct nfst_rec) + 4036 1.2.6.2 yamt NFSV4_OPAQUELIMIT - 1, M_TEMP, M_WAITOK); 4037 1.2.6.2 yamt do { 4038 1.2.6.2 yamt error = NFSD_RDWR(UIO_READ, NFSFPVNODE(sf->nsf_fp), 4039 1.2.6.2 yamt (caddr_t)tsp, sizeof (struct nfst_rec) + NFSV4_OPAQUELIMIT - 1, 4040 1.2.6.2 yamt off, UIO_SYSSPACE, 0, NFSFPCRED(sf->nsf_fp), &aresid, p); 4041 1.2.6.2 yamt len = (sizeof (struct nfst_rec) + NFSV4_OPAQUELIMIT - 1) - aresid; 4042 1.2.6.2 yamt if (error || (len > 0 && (len < sizeof (struct nfst_rec) || 4043 1.2.6.2 yamt len < (sizeof (struct nfst_rec) + tsp->len - 1)))) { 4044 1.2.6.2 yamt /* 4045 1.2.6.2 yamt * Yuck, the file has been corrupted, so just return 4046 1.2.6.2 yamt * after clearing out any restart state, so the grace period 4047 1.2.6.2 yamt * is over. 4048 1.2.6.2 yamt */ 4049 1.2.6.2 yamt LIST_FOREACH_SAFE(sp, &sf->nsf_head, nst_list, nsp) { 4050 1.2.6.2 yamt LIST_REMOVE(sp, nst_list); 4051 1.2.6.2 yamt free((caddr_t)sp, M_TEMP); 4052 1.2.6.2 yamt } 4053 1.2.6.2 yamt free((caddr_t)tsp, M_TEMP); 4054 1.2.6.2 yamt sf->nsf_flags &= ~NFSNSF_OK; 4055 1.2.6.2 yamt free((caddr_t)sf->nsf_bootvals, M_TEMP); 4056 1.2.6.2 yamt sf->nsf_bootvals = NULL; 4057 1.2.6.2 yamt return; 4058 1.2.6.2 yamt } 4059 1.2.6.2 yamt if (len > 0) { 4060 1.2.6.2 yamt off += sizeof (struct nfst_rec) + tsp->len - 1; 4061 1.2.6.2 yamt /* 4062 1.2.6.2 yamt * Search the list for a matching client. 4063 1.2.6.2 yamt */ 4064 1.2.6.2 yamt LIST_FOREACH(sp, &sf->nsf_head, nst_list) { 4065 1.2.6.2 yamt if (tsp->len == sp->nst_len && 4066 1.2.6.2 yamt !NFSBCMP(tsp->client, sp->nst_client, tsp->len)) 4067 1.2.6.2 yamt break; 4068 1.2.6.2 yamt } 4069 1.2.6.2 yamt if (sp == NULL) { 4070 1.2.6.2 yamt sp = (struct nfsrv_stable *)malloc(tsp->len + 4071 1.2.6.2 yamt sizeof (struct nfsrv_stable) - 1, M_TEMP, 4072 1.2.6.2 yamt M_WAITOK); 4073 1.2.6.2 yamt NFSBCOPY((caddr_t)tsp, (caddr_t)&sp->nst_rec, 4074 1.2.6.2 yamt sizeof (struct nfst_rec) + tsp->len - 1); 4075 1.2.6.2 yamt LIST_INSERT_HEAD(&sf->nsf_head, sp, nst_list); 4076 1.2.6.2 yamt } else { 4077 1.2.6.2 yamt if (tsp->flag == NFSNST_REVOKE) 4078 1.2.6.2 yamt sp->nst_flag |= NFSNST_REVOKE; 4079 1.2.6.2 yamt else 4080 1.2.6.2 yamt /* 4081 1.2.6.2 yamt * A subsequent timestamp indicates the client 4082 1.2.6.2 yamt * did a setclientid/confirm and any previous 4083 1.2.6.2 yamt * revoke is no longer relevant. 4084 1.2.6.2 yamt */ 4085 1.2.6.2 yamt sp->nst_flag &= ~NFSNST_REVOKE; 4086 1.2.6.2 yamt } 4087 1.2.6.2 yamt } 4088 1.2.6.2 yamt } while (len > 0); 4089 1.2.6.2 yamt free((caddr_t)tsp, M_TEMP); 4090 1.2.6.2 yamt sf->nsf_flags = NFSNSF_OK; 4091 1.2.6.2 yamt sf->nsf_eograce = NFSD_MONOSEC + sf->nsf_lease + 4092 1.2.6.2 yamt NFSRV_LEASEDELTA; 4093 1.2.6.2 yamt } 4094 1.2.6.2 yamt 4095 1.2.6.2 yamt /* 4096 1.2.6.2 yamt * Update the stable storage file, now that the grace period is over. 4097 1.2.6.2 yamt */ 4098 1.2.6.2 yamt APPLESTATIC void 4099 1.2.6.2 yamt nfsrv_updatestable(NFSPROC_T *p) 4100 1.2.6.2 yamt { 4101 1.2.6.2 yamt struct nfsrv_stablefirst *sf = &nfsrv_stablefirst; 4102 1.2.6.2 yamt struct nfsrv_stable *sp, *nsp; 4103 1.2.6.2 yamt int i; 4104 1.2.6.2 yamt struct nfsvattr nva; 4105 1.2.6.2 yamt vnode_t vp; 4106 1.2.6.2 yamt #if defined(__FreeBSD_version) && (__FreeBSD_version >= 500000) 4107 1.2.6.2 yamt mount_t mp = NULL; 4108 1.2.6.2 yamt #endif 4109 1.2.6.2 yamt int error; 4110 1.2.6.2 yamt 4111 1.2.6.2 yamt if (sf->nsf_fp == NULL || (sf->nsf_flags & NFSNSF_UPDATEDONE)) 4112 1.2.6.2 yamt return; 4113 1.2.6.2 yamt sf->nsf_flags |= NFSNSF_UPDATEDONE; 4114 1.2.6.2 yamt /* 4115 1.2.6.2 yamt * Ok, we need to rewrite the stable storage file. 4116 1.2.6.2 yamt * - truncate to 0 length 4117 1.2.6.2 yamt * - write the new first structure 4118 1.2.6.2 yamt * - loop through the data structures, writing out any that 4119 1.2.6.2 yamt * have timestamps older than the old boot 4120 1.2.6.2 yamt */ 4121 1.2.6.2 yamt if (sf->nsf_bootvals) { 4122 1.2.6.2 yamt sf->nsf_numboots++; 4123 1.2.6.2 yamt for (i = sf->nsf_numboots - 2; i >= 0; i--) 4124 1.2.6.2 yamt sf->nsf_bootvals[i + 1] = sf->nsf_bootvals[i]; 4125 1.2.6.2 yamt } else { 4126 1.2.6.2 yamt sf->nsf_numboots = 1; 4127 1.2.6.2 yamt sf->nsf_bootvals = (time_t *)malloc(sizeof (time_t), 4128 1.2.6.2 yamt M_TEMP, M_WAITOK); 4129 1.2.6.2 yamt } 4130 1.2.6.2 yamt sf->nsf_bootvals[0] = nfsrvboottime; 4131 1.2.6.2 yamt sf->nsf_lease = nfsrv_lease; 4132 1.2.6.2 yamt NFSVNO_ATTRINIT(&nva); 4133 1.2.6.2 yamt NFSVNO_SETATTRVAL(&nva, size, 0); 4134 1.2.6.2 yamt vp = NFSFPVNODE(sf->nsf_fp); 4135 1.2.6.2 yamt vn_start_write(vp, &mp, V_WAIT); 4136 1.2.6.2 yamt if (NFSVOPLOCK(vp, LK_EXCLUSIVE) == 0) { 4137 1.2.6.2 yamt error = nfsvno_setattr(vp, &nva, NFSFPCRED(sf->nsf_fp), p, 4138 1.2.6.2 yamt NULL); 4139 1.2.6.2 yamt NFSVOPUNLOCK(vp, 0); 4140 1.2.6.2 yamt } else 4141 1.2.6.2 yamt error = EPERM; 4142 1.2.6.2 yamt vn_finished_write(mp); 4143 1.2.6.2 yamt if (!error) 4144 1.2.6.2 yamt error = NFSD_RDWR(UIO_WRITE, vp, 4145 1.2.6.2 yamt (caddr_t)&sf->nsf_rec, sizeof (struct nfsf_rec), (off_t)0, 4146 1.2.6.2 yamt UIO_SYSSPACE, IO_SYNC, NFSFPCRED(sf->nsf_fp), NULL, p); 4147 1.2.6.2 yamt if (!error) 4148 1.2.6.2 yamt error = NFSD_RDWR(UIO_WRITE, vp, 4149 1.2.6.2 yamt (caddr_t)sf->nsf_bootvals, 4150 1.2.6.2 yamt sf->nsf_numboots * sizeof (time_t), 4151 1.2.6.2 yamt (off_t)(sizeof (struct nfsf_rec)), 4152 1.2.6.2 yamt UIO_SYSSPACE, IO_SYNC, NFSFPCRED(sf->nsf_fp), NULL, p); 4153 1.2.6.2 yamt free((caddr_t)sf->nsf_bootvals, M_TEMP); 4154 1.2.6.2 yamt sf->nsf_bootvals = NULL; 4155 1.2.6.2 yamt if (error) { 4156 1.2.6.2 yamt sf->nsf_flags &= ~NFSNSF_OK; 4157 1.2.6.2 yamt printf("EEK! Can't write NfsV4 stable storage file\n"); 4158 1.2.6.2 yamt return; 4159 1.2.6.2 yamt } 4160 1.2.6.2 yamt sf->nsf_flags |= NFSNSF_OK; 4161 1.2.6.2 yamt 4162 1.2.6.2 yamt /* 4163 1.2.6.2 yamt * Loop through the list and write out timestamp records for 4164 1.2.6.2 yamt * any clients that successfully reclaimed state. 4165 1.2.6.2 yamt */ 4166 1.2.6.2 yamt LIST_FOREACH_SAFE(sp, &sf->nsf_head, nst_list, nsp) { 4167 1.2.6.2 yamt if (sp->nst_flag & NFSNST_GOTSTATE) { 4168 1.2.6.2 yamt nfsrv_writestable(sp->nst_client, sp->nst_len, 4169 1.2.6.2 yamt NFSNST_NEWSTATE, p); 4170 1.2.6.2 yamt sp->nst_clp->lc_flags |= LCL_STAMPEDSTABLE; 4171 1.2.6.2 yamt } 4172 1.2.6.2 yamt LIST_REMOVE(sp, nst_list); 4173 1.2.6.2 yamt free((caddr_t)sp, M_TEMP); 4174 1.2.6.2 yamt } 4175 1.2.6.2 yamt nfsrv_backupstable(); 4176 1.2.6.2 yamt } 4177 1.2.6.2 yamt 4178 1.2.6.2 yamt /* 4179 1.2.6.2 yamt * Append a record to the stable storage file. 4180 1.2.6.2 yamt */ 4181 1.2.6.2 yamt APPLESTATIC void 4182 1.2.6.2 yamt nfsrv_writestable(u_char *client, int len, int flag, NFSPROC_T *p) 4183 1.2.6.2 yamt { 4184 1.2.6.2 yamt struct nfsrv_stablefirst *sf = &nfsrv_stablefirst; 4185 1.2.6.2 yamt struct nfst_rec *sp; 4186 1.2.6.2 yamt int error; 4187 1.2.6.2 yamt 4188 1.2.6.2 yamt if (!(sf->nsf_flags & NFSNSF_OK) || sf->nsf_fp == NULL) 4189 1.2.6.2 yamt return; 4190 1.2.6.2 yamt sp = (struct nfst_rec *)malloc(sizeof (struct nfst_rec) + 4191 1.2.6.2 yamt len - 1, M_TEMP, M_WAITOK); 4192 1.2.6.2 yamt sp->len = len; 4193 1.2.6.2 yamt NFSBCOPY(client, sp->client, len); 4194 1.2.6.2 yamt sp->flag = flag; 4195 1.2.6.2 yamt error = NFSD_RDWR(UIO_WRITE, NFSFPVNODE(sf->nsf_fp), 4196 1.2.6.2 yamt (caddr_t)sp, sizeof (struct nfst_rec) + len - 1, (off_t)0, 4197 1.2.6.2 yamt UIO_SYSSPACE, (IO_SYNC | IO_APPEND), NFSFPCRED(sf->nsf_fp), NULL, p); 4198 1.2.6.2 yamt free((caddr_t)sp, M_TEMP); 4199 1.2.6.2 yamt if (error) { 4200 1.2.6.2 yamt sf->nsf_flags &= ~NFSNSF_OK; 4201 1.2.6.2 yamt printf("EEK! Can't write NfsV4 stable storage file\n"); 4202 1.2.6.2 yamt } 4203 1.2.6.2 yamt } 4204 1.2.6.2 yamt 4205 1.2.6.2 yamt /* 4206 1.2.6.2 yamt * This function is called during the grace period to mark a client 4207 1.2.6.2 yamt * that successfully reclaimed state. 4208 1.2.6.2 yamt */ 4209 1.2.6.2 yamt static void 4210 1.2.6.2 yamt nfsrv_markstable(struct nfsclient *clp) 4211 1.2.6.2 yamt { 4212 1.2.6.2 yamt struct nfsrv_stable *sp; 4213 1.2.6.2 yamt 4214 1.2.6.2 yamt /* 4215 1.2.6.2 yamt * First find the client structure. 4216 1.2.6.2 yamt */ 4217 1.2.6.2 yamt LIST_FOREACH(sp, &nfsrv_stablefirst.nsf_head, nst_list) { 4218 1.2.6.2 yamt if (sp->nst_len == clp->lc_idlen && 4219 1.2.6.2 yamt !NFSBCMP(sp->nst_client, clp->lc_id, sp->nst_len)) 4220 1.2.6.2 yamt break; 4221 1.2.6.2 yamt } 4222 1.2.6.2 yamt if (sp == NULL) 4223 1.2.6.2 yamt return; 4224 1.2.6.2 yamt 4225 1.2.6.2 yamt /* 4226 1.2.6.2 yamt * Now, just mark it and set the nfsclient back pointer. 4227 1.2.6.2 yamt */ 4228 1.2.6.2 yamt sp->nst_flag |= NFSNST_GOTSTATE; 4229 1.2.6.2 yamt sp->nst_clp = clp; 4230 1.2.6.2 yamt } 4231 1.2.6.2 yamt 4232 1.2.6.2 yamt /* 4233 1.2.6.2 yamt * This function is called for a reclaim, to see if it gets grace. 4234 1.2.6.2 yamt * It returns 0 if a reclaim is allowed, 1 otherwise. 4235 1.2.6.2 yamt */ 4236 1.2.6.2 yamt static int 4237 1.2.6.2 yamt nfsrv_checkstable(struct nfsclient *clp) 4238 1.2.6.2 yamt { 4239 1.2.6.2 yamt struct nfsrv_stable *sp; 4240 1.2.6.2 yamt 4241 1.2.6.2 yamt /* 4242 1.2.6.2 yamt * First, find the entry for the client. 4243 1.2.6.2 yamt */ 4244 1.2.6.2 yamt LIST_FOREACH(sp, &nfsrv_stablefirst.nsf_head, nst_list) { 4245 1.2.6.2 yamt if (sp->nst_len == clp->lc_idlen && 4246 1.2.6.2 yamt !NFSBCMP(sp->nst_client, clp->lc_id, sp->nst_len)) 4247 1.2.6.2 yamt break; 4248 1.2.6.2 yamt } 4249 1.2.6.2 yamt 4250 1.2.6.2 yamt /* 4251 1.2.6.2 yamt * If not in the list, state was revoked or no state was issued 4252 1.2.6.2 yamt * since the previous reboot, a reclaim is denied. 4253 1.2.6.2 yamt */ 4254 1.2.6.2 yamt if (sp == NULL || 4255 1.2.6.2 yamt (sp->nst_flag & NFSNST_REVOKE) || 4256 1.2.6.2 yamt !(nfsrv_stablefirst.nsf_flags & NFSNSF_OK)) 4257 1.2.6.2 yamt return (1); 4258 1.2.6.2 yamt return (0); 4259 1.2.6.2 yamt } 4260 1.2.6.2 yamt 4261 1.2.6.2 yamt /* 4262 1.2.6.2 yamt * Test for and try to clear out a conflicting client. This is called by 4263 1.2.6.2 yamt * nfsrv_lockctrl() and nfsrv_openctrl() when conflicts with other clients 4264 1.2.6.2 yamt * a found. 4265 1.2.6.2 yamt * The trick here is that it can't revoke a conflicting client with an 4266 1.2.6.2 yamt * expired lease unless it holds the v4root lock, so... 4267 1.2.6.2 yamt * If no v4root lock, get the lock and return 1 to indicate "try again". 4268 1.2.6.2 yamt * Return 0 to indicate the conflict can't be revoked and 1 to indicate 4269 1.2.6.2 yamt * the revocation worked and the conflicting client is "bye, bye", so it 4270 1.2.6.2 yamt * can be tried again. 4271 1.2.6.2 yamt * Return 2 to indicate that the vnode is VI_DOOMED after NFSVOPLOCK(). 4272 1.2.6.2 yamt * Unlocks State before a non-zero value is returned. 4273 1.2.6.2 yamt */ 4274 1.2.6.2 yamt static int 4275 1.2.6.2 yamt nfsrv_clientconflict(struct nfsclient *clp, int *haslockp, vnode_t vp, 4276 1.2.6.2 yamt NFSPROC_T *p) 4277 1.2.6.2 yamt { 4278 1.2.6.2 yamt int gotlock, lktype; 4279 1.2.6.2 yamt 4280 1.2.6.2 yamt /* 4281 1.2.6.2 yamt * If lease hasn't expired, we can't fix it. 4282 1.2.6.2 yamt */ 4283 1.2.6.2 yamt if (clp->lc_expiry >= NFSD_MONOSEC || 4284 1.2.6.2 yamt !(nfsrv_stablefirst.nsf_flags & NFSNSF_UPDATEDONE)) 4285 1.2.6.2 yamt return (0); 4286 1.2.6.2 yamt if (*haslockp == 0) { 4287 1.2.6.2 yamt NFSUNLOCKSTATE(); 4288 1.2.6.2 yamt lktype = NFSVOPISLOCKED(vp); 4289 1.2.6.2 yamt NFSVOPUNLOCK(vp, 0); 4290 1.2.6.2 yamt NFSLOCKV4ROOTMUTEX(); 4291 1.2.6.2 yamt nfsv4_relref(&nfsv4rootfs_lock); 4292 1.2.6.2 yamt do { 4293 1.2.6.2 yamt gotlock = nfsv4_lock(&nfsv4rootfs_lock, 1, NULL, 4294 1.2.6.2 yamt NFSV4ROOTLOCKMUTEXPTR, NULL); 4295 1.2.6.2 yamt } while (!gotlock); 4296 1.2.6.2 yamt NFSUNLOCKV4ROOTMUTEX(); 4297 1.2.6.2 yamt *haslockp = 1; 4298 1.2.6.2 yamt NFSVOPLOCK(vp, lktype | LK_RETRY); 4299 1.2.6.2 yamt if ((vp->v_iflag & VI_DOOMED) != 0) 4300 1.2.6.2 yamt return (2); 4301 1.2.6.2 yamt else 4302 1.2.6.2 yamt return (1); 4303 1.2.6.2 yamt } 4304 1.2.6.2 yamt NFSUNLOCKSTATE(); 4305 1.2.6.2 yamt 4306 1.2.6.2 yamt /* 4307 1.2.6.2 yamt * Ok, we can expire the conflicting client. 4308 1.2.6.2 yamt */ 4309 1.2.6.2 yamt nfsrv_writestable(clp->lc_id, clp->lc_idlen, NFSNST_REVOKE, p); 4310 1.2.6.2 yamt nfsrv_backupstable(); 4311 1.2.6.2 yamt nfsrv_cleanclient(clp, p); 4312 1.2.6.2 yamt nfsrv_freedeleglist(&clp->lc_deleg); 4313 1.2.6.2 yamt nfsrv_freedeleglist(&clp->lc_olddeleg); 4314 1.2.6.2 yamt LIST_REMOVE(clp, lc_hash); 4315 1.2.6.2 yamt nfsrv_zapclient(clp, p); 4316 1.2.6.2 yamt return (1); 4317 1.2.6.2 yamt } 4318 1.2.6.2 yamt 4319 1.2.6.2 yamt /* 4320 1.2.6.2 yamt * Resolve a delegation conflict. 4321 1.2.6.2 yamt * Returns 0 to indicate the conflict was resolved without sleeping. 4322 1.2.6.2 yamt * Return -1 to indicate that the caller should check for conflicts again. 4323 1.2.6.2 yamt * Return > 0 for an error that should be returned, normally NFSERR_DELAY. 4324 1.2.6.2 yamt * 4325 1.2.6.2 yamt * Also, manipulate the nfsv4root_lock, as required. It isn't changed 4326 1.2.6.2 yamt * for a return of 0, since there was no sleep and it could be required 4327 1.2.6.2 yamt * later. It is released for a return of NFSERR_DELAY, since the caller 4328 1.2.6.2 yamt * will return that error. It is released when a sleep was done waiting 4329 1.2.6.2 yamt * for the delegation to be returned or expire (so that other nfsds can 4330 1.2.6.2 yamt * handle ops). Then, it must be acquired for the write to stable storage. 4331 1.2.6.2 yamt * (This function is somewhat similar to nfsrv_clientconflict(), but 4332 1.2.6.2 yamt * the semantics differ in a couple of subtle ways. The return of 0 4333 1.2.6.2 yamt * indicates the conflict was resolved without sleeping here, not 4334 1.2.6.2 yamt * that the conflict can't be resolved and the handling of nfsv4root_lock 4335 1.2.6.2 yamt * differs, as noted above.) 4336 1.2.6.2 yamt * Unlocks State before returning a non-zero value. 4337 1.2.6.2 yamt */ 4338 1.2.6.2 yamt static int 4339 1.2.6.2 yamt nfsrv_delegconflict(struct nfsstate *stp, int *haslockp, NFSPROC_T *p, 4340 1.2.6.2 yamt vnode_t vp) 4341 1.2.6.2 yamt { 4342 1.2.6.2 yamt struct nfsclient *clp = stp->ls_clp; 4343 1.2.6.2 yamt int gotlock, error, lktype, retrycnt, zapped_clp; 4344 1.2.6.2 yamt nfsv4stateid_t tstateid; 4345 1.2.6.2 yamt fhandle_t tfh; 4346 1.2.6.2 yamt 4347 1.2.6.2 yamt /* 4348 1.2.6.2 yamt * If the conflict is with an old delegation... 4349 1.2.6.2 yamt */ 4350 1.2.6.2 yamt if (stp->ls_flags & NFSLCK_OLDDELEG) { 4351 1.2.6.2 yamt /* 4352 1.2.6.2 yamt * You can delete it, if it has expired. 4353 1.2.6.2 yamt */ 4354 1.2.6.2 yamt if (clp->lc_delegtime < NFSD_MONOSEC) { 4355 1.2.6.2 yamt nfsrv_freedeleg(stp); 4356 1.2.6.2 yamt NFSUNLOCKSTATE(); 4357 1.2.6.2 yamt error = -1; 4358 1.2.6.2 yamt goto out; 4359 1.2.6.2 yamt } 4360 1.2.6.2 yamt NFSUNLOCKSTATE(); 4361 1.2.6.2 yamt /* 4362 1.2.6.2 yamt * During this delay, the old delegation could expire or it 4363 1.2.6.2 yamt * could be recovered by the client via an Open with 4364 1.2.6.2 yamt * CLAIM_DELEGATE_PREV. 4365 1.2.6.2 yamt * Release the nfsv4root_lock, if held. 4366 1.2.6.2 yamt */ 4367 1.2.6.2 yamt if (*haslockp) { 4368 1.2.6.2 yamt *haslockp = 0; 4369 1.2.6.2 yamt NFSLOCKV4ROOTMUTEX(); 4370 1.2.6.2 yamt nfsv4_unlock(&nfsv4rootfs_lock, 1); 4371 1.2.6.2 yamt NFSUNLOCKV4ROOTMUTEX(); 4372 1.2.6.2 yamt } 4373 1.2.6.2 yamt error = NFSERR_DELAY; 4374 1.2.6.2 yamt goto out; 4375 1.2.6.2 yamt } 4376 1.2.6.2 yamt 4377 1.2.6.2 yamt /* 4378 1.2.6.2 yamt * It's a current delegation, so: 4379 1.2.6.2 yamt * - check to see if the delegation has expired 4380 1.2.6.2 yamt * - if so, get the v4root lock and then expire it 4381 1.2.6.2 yamt */ 4382 1.2.6.2 yamt if (!(stp->ls_flags & NFSLCK_DELEGRECALL)) { 4383 1.2.6.2 yamt /* 4384 1.2.6.2 yamt * - do a recall callback, since not yet done 4385 1.2.6.2 yamt * For now, never allow truncate to be set. To use 4386 1.2.6.2 yamt * truncate safely, it must be guaranteed that the 4387 1.2.6.2 yamt * Remove, Rename or Setattr with size of 0 will 4388 1.2.6.2 yamt * succeed and that would require major changes to 4389 1.2.6.2 yamt * the VFS/Vnode OPs. 4390 1.2.6.2 yamt * Set the expiry time large enough so that it won't expire 4391 1.2.6.2 yamt * until after the callback, then set it correctly, once 4392 1.2.6.2 yamt * the callback is done. (The delegation will now time 4393 1.2.6.2 yamt * out whether or not the Recall worked ok. The timeout 4394 1.2.6.2 yamt * will be extended when ops are done on the delegation 4395 1.2.6.2 yamt * stateid, up to the timelimit.) 4396 1.2.6.2 yamt */ 4397 1.2.6.2 yamt stp->ls_delegtime = NFSD_MONOSEC + (2 * nfsrv_lease) + 4398 1.2.6.2 yamt NFSRV_LEASEDELTA; 4399 1.2.6.2 yamt stp->ls_delegtimelimit = NFSD_MONOSEC + (6 * nfsrv_lease) + 4400 1.2.6.2 yamt NFSRV_LEASEDELTA; 4401 1.2.6.2 yamt stp->ls_flags |= NFSLCK_DELEGRECALL; 4402 1.2.6.2 yamt 4403 1.2.6.2 yamt /* 4404 1.2.6.2 yamt * Loop NFSRV_CBRETRYCNT times while the CBRecall replies 4405 1.2.6.2 yamt * NFSERR_BADSTATEID or NFSERR_BADHANDLE. This is done 4406 1.2.6.2 yamt * in order to try and avoid a race that could happen 4407 1.2.6.2 yamt * when a CBRecall request passed the Open reply with 4408 1.2.6.2 yamt * the delegation in it when transitting the network. 4409 1.2.6.2 yamt * Since nfsrv_docallback will sleep, don't use stp after 4410 1.2.6.2 yamt * the call. 4411 1.2.6.2 yamt */ 4412 1.2.6.2 yamt NFSBCOPY((caddr_t)&stp->ls_stateid, (caddr_t)&tstateid, 4413 1.2.6.2 yamt sizeof (tstateid)); 4414 1.2.6.2 yamt NFSBCOPY((caddr_t)&stp->ls_lfp->lf_fh, (caddr_t)&tfh, 4415 1.2.6.2 yamt sizeof (tfh)); 4416 1.2.6.2 yamt NFSUNLOCKSTATE(); 4417 1.2.6.2 yamt if (*haslockp) { 4418 1.2.6.2 yamt *haslockp = 0; 4419 1.2.6.2 yamt NFSLOCKV4ROOTMUTEX(); 4420 1.2.6.2 yamt nfsv4_unlock(&nfsv4rootfs_lock, 1); 4421 1.2.6.2 yamt NFSUNLOCKV4ROOTMUTEX(); 4422 1.2.6.2 yamt } 4423 1.2.6.2 yamt retrycnt = 0; 4424 1.2.6.2 yamt do { 4425 1.2.6.2 yamt error = nfsrv_docallback(clp, NFSV4OP_CBRECALL, 4426 1.2.6.2 yamt &tstateid, 0, &tfh, NULL, NULL, p); 4427 1.2.6.2 yamt retrycnt++; 4428 1.2.6.2 yamt } while ((error == NFSERR_BADSTATEID || 4429 1.2.6.2 yamt error == NFSERR_BADHANDLE) && retrycnt < NFSV4_CBRETRYCNT); 4430 1.2.6.2 yamt error = NFSERR_DELAY; 4431 1.2.6.2 yamt goto out; 4432 1.2.6.2 yamt } 4433 1.2.6.2 yamt 4434 1.2.6.2 yamt if (clp->lc_expiry >= NFSD_MONOSEC && 4435 1.2.6.2 yamt stp->ls_delegtime >= NFSD_MONOSEC) { 4436 1.2.6.2 yamt NFSUNLOCKSTATE(); 4437 1.2.6.2 yamt /* 4438 1.2.6.2 yamt * A recall has been done, but it has not yet expired. 4439 1.2.6.2 yamt * So, RETURN_DELAY. 4440 1.2.6.2 yamt */ 4441 1.2.6.2 yamt if (*haslockp) { 4442 1.2.6.2 yamt *haslockp = 0; 4443 1.2.6.2 yamt NFSLOCKV4ROOTMUTEX(); 4444 1.2.6.2 yamt nfsv4_unlock(&nfsv4rootfs_lock, 1); 4445 1.2.6.2 yamt NFSUNLOCKV4ROOTMUTEX(); 4446 1.2.6.2 yamt } 4447 1.2.6.2 yamt error = NFSERR_DELAY; 4448 1.2.6.2 yamt goto out; 4449 1.2.6.2 yamt } 4450 1.2.6.2 yamt 4451 1.2.6.2 yamt /* 4452 1.2.6.2 yamt * If we don't yet have the lock, just get it and then return, 4453 1.2.6.2 yamt * since we need that before deleting expired state, such as 4454 1.2.6.2 yamt * this delegation. 4455 1.2.6.2 yamt * When getting the lock, unlock the vnode, so other nfsds that 4456 1.2.6.2 yamt * are in progress, won't get stuck waiting for the vnode lock. 4457 1.2.6.2 yamt */ 4458 1.2.6.2 yamt if (*haslockp == 0) { 4459 1.2.6.2 yamt NFSUNLOCKSTATE(); 4460 1.2.6.2 yamt lktype = NFSVOPISLOCKED(vp); 4461 1.2.6.2 yamt NFSVOPUNLOCK(vp, 0); 4462 1.2.6.2 yamt NFSLOCKV4ROOTMUTEX(); 4463 1.2.6.2 yamt nfsv4_relref(&nfsv4rootfs_lock); 4464 1.2.6.2 yamt do { 4465 1.2.6.2 yamt gotlock = nfsv4_lock(&nfsv4rootfs_lock, 1, NULL, 4466 1.2.6.2 yamt NFSV4ROOTLOCKMUTEXPTR, NULL); 4467 1.2.6.2 yamt } while (!gotlock); 4468 1.2.6.2 yamt NFSUNLOCKV4ROOTMUTEX(); 4469 1.2.6.2 yamt *haslockp = 1; 4470 1.2.6.2 yamt NFSVOPLOCK(vp, lktype | LK_RETRY); 4471 1.2.6.2 yamt if ((vp->v_iflag & VI_DOOMED) != 0) { 4472 1.2.6.2 yamt *haslockp = 0; 4473 1.2.6.2 yamt NFSLOCKV4ROOTMUTEX(); 4474 1.2.6.2 yamt nfsv4_unlock(&nfsv4rootfs_lock, 1); 4475 1.2.6.2 yamt NFSUNLOCKV4ROOTMUTEX(); 4476 1.2.6.2 yamt error = NFSERR_PERM; 4477 1.2.6.2 yamt goto out; 4478 1.2.6.2 yamt } 4479 1.2.6.2 yamt error = -1; 4480 1.2.6.2 yamt goto out; 4481 1.2.6.2 yamt } 4482 1.2.6.2 yamt 4483 1.2.6.2 yamt NFSUNLOCKSTATE(); 4484 1.2.6.2 yamt /* 4485 1.2.6.2 yamt * Ok, we can delete the expired delegation. 4486 1.2.6.2 yamt * First, write the Revoke record to stable storage and then 4487 1.2.6.2 yamt * clear out the conflict. 4488 1.2.6.2 yamt * Since all other nfsd threads are now blocked, we can safely 4489 1.2.6.2 yamt * sleep without the state changing. 4490 1.2.6.2 yamt */ 4491 1.2.6.2 yamt nfsrv_writestable(clp->lc_id, clp->lc_idlen, NFSNST_REVOKE, p); 4492 1.2.6.2 yamt nfsrv_backupstable(); 4493 1.2.6.2 yamt if (clp->lc_expiry < NFSD_MONOSEC) { 4494 1.2.6.2 yamt nfsrv_cleanclient(clp, p); 4495 1.2.6.2 yamt nfsrv_freedeleglist(&clp->lc_deleg); 4496 1.2.6.2 yamt nfsrv_freedeleglist(&clp->lc_olddeleg); 4497 1.2.6.2 yamt LIST_REMOVE(clp, lc_hash); 4498 1.2.6.2 yamt zapped_clp = 1; 4499 1.2.6.2 yamt } else { 4500 1.2.6.2 yamt nfsrv_freedeleg(stp); 4501 1.2.6.2 yamt zapped_clp = 0; 4502 1.2.6.2 yamt } 4503 1.2.6.2 yamt if (zapped_clp) 4504 1.2.6.2 yamt nfsrv_zapclient(clp, p); 4505 1.2.6.2 yamt error = -1; 4506 1.2.6.2 yamt 4507 1.2.6.2 yamt out: 4508 1.2.6.2 yamt NFSEXITCODE(error); 4509 1.2.6.2 yamt return (error); 4510 1.2.6.2 yamt } 4511 1.2.6.2 yamt 4512 1.2.6.2 yamt /* 4513 1.2.6.2 yamt * Check for a remove allowed, if remove is set to 1 and get rid of 4514 1.2.6.2 yamt * delegations. 4515 1.2.6.2 yamt */ 4516 1.2.6.2 yamt APPLESTATIC int 4517 1.2.6.2 yamt nfsrv_checkremove(vnode_t vp, int remove, NFSPROC_T *p) 4518 1.2.6.2 yamt { 4519 1.2.6.2 yamt struct nfsstate *stp; 4520 1.2.6.2 yamt struct nfslockfile *lfp; 4521 1.2.6.2 yamt int error, haslock = 0; 4522 1.2.6.2 yamt fhandle_t nfh; 4523 1.2.6.2 yamt 4524 1.2.6.2 yamt /* 4525 1.2.6.2 yamt * First, get the lock file structure. 4526 1.2.6.2 yamt * (A return of -1 means no associated state, so remove ok.) 4527 1.2.6.2 yamt */ 4528 1.2.6.2 yamt error = nfsrv_getlockfh(vp, NFSLCK_CHECK, NULL, &nfh, p); 4529 1.2.6.2 yamt tryagain: 4530 1.2.6.2 yamt NFSLOCKSTATE(); 4531 1.2.6.2 yamt if (!error) 4532 1.2.6.2 yamt error = nfsrv_getlockfile(NFSLCK_CHECK, NULL, &lfp, &nfh, 0); 4533 1.2.6.2 yamt if (error) { 4534 1.2.6.2 yamt NFSUNLOCKSTATE(); 4535 1.2.6.2 yamt if (haslock) { 4536 1.2.6.2 yamt NFSLOCKV4ROOTMUTEX(); 4537 1.2.6.2 yamt nfsv4_unlock(&nfsv4rootfs_lock, 1); 4538 1.2.6.2 yamt NFSUNLOCKV4ROOTMUTEX(); 4539 1.2.6.2 yamt } 4540 1.2.6.2 yamt if (error == -1) 4541 1.2.6.2 yamt error = 0; 4542 1.2.6.2 yamt goto out; 4543 1.2.6.2 yamt } 4544 1.2.6.2 yamt 4545 1.2.6.2 yamt /* 4546 1.2.6.2 yamt * Now, we must Recall any delegations. 4547 1.2.6.2 yamt */ 4548 1.2.6.2 yamt error = nfsrv_cleandeleg(vp, lfp, NULL, &haslock, p); 4549 1.2.6.2 yamt if (error) { 4550 1.2.6.2 yamt /* 4551 1.2.6.2 yamt * nfsrv_cleandeleg() unlocks state for non-zero 4552 1.2.6.2 yamt * return. 4553 1.2.6.2 yamt */ 4554 1.2.6.2 yamt if (error == -1) 4555 1.2.6.2 yamt goto tryagain; 4556 1.2.6.2 yamt if (haslock) { 4557 1.2.6.2 yamt NFSLOCKV4ROOTMUTEX(); 4558 1.2.6.2 yamt nfsv4_unlock(&nfsv4rootfs_lock, 1); 4559 1.2.6.2 yamt NFSUNLOCKV4ROOTMUTEX(); 4560 1.2.6.2 yamt } 4561 1.2.6.2 yamt goto out; 4562 1.2.6.2 yamt } 4563 1.2.6.2 yamt 4564 1.2.6.2 yamt /* 4565 1.2.6.2 yamt * Now, look for a conflicting open share. 4566 1.2.6.2 yamt */ 4567 1.2.6.2 yamt if (remove) { 4568 1.2.6.2 yamt LIST_FOREACH(stp, &lfp->lf_open, ls_file) { 4569 1.2.6.2 yamt if (stp->ls_flags & NFSLCK_WRITEDENY) { 4570 1.2.6.2 yamt error = NFSERR_FILEOPEN; 4571 1.2.6.2 yamt break; 4572 1.2.6.2 yamt } 4573 1.2.6.2 yamt } 4574 1.2.6.2 yamt } 4575 1.2.6.2 yamt 4576 1.2.6.2 yamt NFSUNLOCKSTATE(); 4577 1.2.6.2 yamt if (haslock) { 4578 1.2.6.2 yamt NFSLOCKV4ROOTMUTEX(); 4579 1.2.6.2 yamt nfsv4_unlock(&nfsv4rootfs_lock, 1); 4580 1.2.6.2 yamt NFSUNLOCKV4ROOTMUTEX(); 4581 1.2.6.2 yamt } 4582 1.2.6.2 yamt 4583 1.2.6.2 yamt out: 4584 1.2.6.2 yamt NFSEXITCODE(error); 4585 1.2.6.2 yamt return (error); 4586 1.2.6.2 yamt } 4587 1.2.6.2 yamt 4588 1.2.6.2 yamt /* 4589 1.2.6.2 yamt * Clear out all delegations for the file referred to by lfp. 4590 1.2.6.2 yamt * May return NFSERR_DELAY, if there will be a delay waiting for 4591 1.2.6.2 yamt * delegations to expire. 4592 1.2.6.2 yamt * Returns -1 to indicate it slept while recalling a delegation. 4593 1.2.6.2 yamt * This function has the side effect of deleting the nfslockfile structure, 4594 1.2.6.2 yamt * if it no longer has associated state and didn't have to sleep. 4595 1.2.6.2 yamt * Unlocks State before a non-zero value is returned. 4596 1.2.6.2 yamt */ 4597 1.2.6.2 yamt static int 4598 1.2.6.2 yamt nfsrv_cleandeleg(vnode_t vp, struct nfslockfile *lfp, 4599 1.2.6.2 yamt struct nfsclient *clp, int *haslockp, NFSPROC_T *p) 4600 1.2.6.2 yamt { 4601 1.2.6.2 yamt struct nfsstate *stp, *nstp; 4602 1.2.6.2 yamt int ret = 0; 4603 1.2.6.2 yamt 4604 1.2.6.2 yamt stp = LIST_FIRST(&lfp->lf_deleg); 4605 1.2.6.2 yamt while (stp != NULL) { 4606 1.2.6.2 yamt nstp = LIST_NEXT(stp, ls_file); 4607 1.2.6.2 yamt if (stp->ls_clp != clp) { 4608 1.2.6.2 yamt ret = nfsrv_delegconflict(stp, haslockp, p, vp); 4609 1.2.6.2 yamt if (ret) { 4610 1.2.6.2 yamt /* 4611 1.2.6.2 yamt * nfsrv_delegconflict() unlocks state 4612 1.2.6.2 yamt * when it returns non-zero. 4613 1.2.6.2 yamt */ 4614 1.2.6.2 yamt goto out; 4615 1.2.6.2 yamt } 4616 1.2.6.2 yamt } 4617 1.2.6.2 yamt stp = nstp; 4618 1.2.6.2 yamt } 4619 1.2.6.2 yamt out: 4620 1.2.6.2 yamt NFSEXITCODE(ret); 4621 1.2.6.2 yamt return (ret); 4622 1.2.6.2 yamt } 4623 1.2.6.2 yamt 4624 1.2.6.2 yamt /* 4625 1.2.6.2 yamt * There are certain operations that, when being done outside of NFSv4, 4626 1.2.6.2 yamt * require that any NFSv4 delegation for the file be recalled. 4627 1.2.6.2 yamt * This function is to be called for those cases: 4628 1.2.6.2 yamt * VOP_RENAME() - When a delegation is being recalled for any reason, 4629 1.2.6.2 yamt * the client may have to do Opens against the server, using the file's 4630 1.2.6.2 yamt * final component name. If the file has been renamed on the server, 4631 1.2.6.2 yamt * that component name will be incorrect and the Open will fail. 4632 1.2.6.2 yamt * VOP_REMOVE() - Theoretically, a client could Open a file after it has 4633 1.2.6.2 yamt * been removed on the server, if there is a delegation issued to 4634 1.2.6.2 yamt * that client for the file. I say "theoretically" since clients 4635 1.2.6.2 yamt * normally do an Access Op before the Open and that Access Op will 4636 1.2.6.2 yamt * fail with ESTALE. Note that NFSv2 and 3 don't even do Opens, so 4637 1.2.6.2 yamt * they will detect the file's removal in the same manner. (There is 4638 1.2.6.2 yamt * one case where RFC3530 allows a client to do an Open without first 4639 1.2.6.2 yamt * doing an Access Op, which is passage of a check against the ACE 4640 1.2.6.2 yamt * returned with a Write delegation, but current practice is to ignore 4641 1.2.6.2 yamt * the ACE and always do an Access Op.) 4642 1.2.6.2 yamt * Since the functions can only be called with an unlocked vnode, this 4643 1.2.6.2 yamt * can't be done at this time. 4644 1.2.6.2 yamt * VOP_ADVLOCK() - When a client holds a delegation, it can issue byte range 4645 1.2.6.2 yamt * locks locally in the client, which are not visible to the server. To 4646 1.2.6.2 yamt * deal with this, issuing of delegations for a vnode must be disabled 4647 1.2.6.2 yamt * and all delegations for the vnode recalled. This is done via the 4648 1.2.6.2 yamt * second function, using the VV_DISABLEDELEG vflag on the vnode. 4649 1.2.6.2 yamt */ 4650 1.2.6.2 yamt APPLESTATIC void 4651 1.2.6.2 yamt nfsd_recalldelegation(vnode_t vp, NFSPROC_T *p) 4652 1.2.6.2 yamt { 4653 1.2.6.2 yamt time_t starttime; 4654 1.2.6.2 yamt int error; 4655 1.2.6.2 yamt 4656 1.2.6.2 yamt /* 4657 1.2.6.2 yamt * First, check to see if the server is currently running and it has 4658 1.2.6.2 yamt * been called for a regular file when issuing delegations. 4659 1.2.6.2 yamt */ 4660 1.2.6.2 yamt if (newnfs_numnfsd == 0 || vp->v_type != VREG || 4661 1.2.6.2 yamt nfsrv_issuedelegs == 0) 4662 1.2.6.2 yamt return; 4663 1.2.6.2 yamt 4664 1.2.6.2 yamt KASSERT((NFSVOPISLOCKED(vp) != LK_EXCLUSIVE), ("vp %p is locked", vp)); 4665 1.2.6.2 yamt /* 4666 1.2.6.2 yamt * First, get a reference on the nfsv4rootfs_lock so that an 4667 1.2.6.2 yamt * exclusive lock cannot be acquired by another thread. 4668 1.2.6.2 yamt */ 4669 1.2.6.2 yamt NFSLOCKV4ROOTMUTEX(); 4670 1.2.6.2 yamt nfsv4_getref(&nfsv4rootfs_lock, NULL, NFSV4ROOTLOCKMUTEXPTR, NULL); 4671 1.2.6.2 yamt NFSUNLOCKV4ROOTMUTEX(); 4672 1.2.6.2 yamt 4673 1.2.6.2 yamt /* 4674 1.2.6.2 yamt * Now, call nfsrv_checkremove() in a loop while it returns 4675 1.2.6.2 yamt * NFSERR_DELAY. Return upon any other error or when timed out. 4676 1.2.6.2 yamt */ 4677 1.2.6.2 yamt starttime = NFSD_MONOSEC; 4678 1.2.6.2 yamt do { 4679 1.2.6.2 yamt if (NFSVOPLOCK(vp, LK_EXCLUSIVE) == 0) { 4680 1.2.6.2 yamt error = nfsrv_checkremove(vp, 0, p); 4681 1.2.6.2 yamt NFSVOPUNLOCK(vp, 0); 4682 1.2.6.2 yamt } else 4683 1.2.6.2 yamt error = EPERM; 4684 1.2.6.2 yamt if (error == NFSERR_DELAY) { 4685 1.2.6.2 yamt if (NFSD_MONOSEC - starttime > NFS_REMOVETIMEO) 4686 1.2.6.2 yamt break; 4687 1.2.6.2 yamt /* Sleep for a short period of time */ 4688 1.2.6.2 yamt (void) nfs_catnap(PZERO, 0, "nfsremove"); 4689 1.2.6.2 yamt } 4690 1.2.6.2 yamt } while (error == NFSERR_DELAY); 4691 1.2.6.2 yamt NFSLOCKV4ROOTMUTEX(); 4692 1.2.6.2 yamt nfsv4_relref(&nfsv4rootfs_lock); 4693 1.2.6.2 yamt NFSUNLOCKV4ROOTMUTEX(); 4694 1.2.6.2 yamt } 4695 1.2.6.2 yamt 4696 1.2.6.2 yamt APPLESTATIC void 4697 1.2.6.2 yamt nfsd_disabledelegation(vnode_t vp, NFSPROC_T *p) 4698 1.2.6.2 yamt { 4699 1.2.6.2 yamt 4700 1.2.6.2 yamt #ifdef VV_DISABLEDELEG 4701 1.2.6.2 yamt /* 4702 1.2.6.2 yamt * First, flag issuance of delegations disabled. 4703 1.2.6.2 yamt */ 4704 1.2.6.2 yamt atomic_set_long(&vp->v_vflag, VV_DISABLEDELEG); 4705 1.2.6.2 yamt #endif 4706 1.2.6.2 yamt 4707 1.2.6.2 yamt /* 4708 1.2.6.2 yamt * Then call nfsd_recalldelegation() to get rid of all extant 4709 1.2.6.2 yamt * delegations. 4710 1.2.6.2 yamt */ 4711 1.2.6.2 yamt nfsd_recalldelegation(vp, p); 4712 1.2.6.2 yamt } 4713 1.2.6.2 yamt 4714 1.2.6.2 yamt /* 4715 1.2.6.2 yamt * Check for conflicting locks, etc. and then get rid of delegations. 4716 1.2.6.2 yamt * (At one point I thought that I should get rid of delegations for any 4717 1.2.6.2 yamt * Setattr, since it could potentially disallow the I/O op (read or write) 4718 1.2.6.2 yamt * allowed by the delegation. However, Setattr Ops that aren't changing 4719 1.2.6.2 yamt * the size get a stateid of all 0s, so you can't tell if it is a delegation 4720 1.2.6.2 yamt * for the same client or a different one, so I decided to only get rid 4721 1.2.6.2 yamt * of delegations for other clients when the size is being changed.) 4722 1.2.6.2 yamt * In general, a Setattr can disable NFS I/O Ops that are outstanding, such 4723 1.2.6.2 yamt * as Write backs, even if there is no delegation, so it really isn't any 4724 1.2.6.2 yamt * different?) 4725 1.2.6.2 yamt */ 4726 1.2.6.2 yamt APPLESTATIC int 4727 1.2.6.2 yamt nfsrv_checksetattr(vnode_t vp, struct nfsrv_descript *nd, 4728 1.2.6.2 yamt nfsv4stateid_t *stateidp, struct nfsvattr *nvap, nfsattrbit_t *attrbitp, 4729 1.2.6.2 yamt struct nfsexstuff *exp, NFSPROC_T *p) 4730 1.2.6.2 yamt { 4731 1.2.6.2 yamt struct nfsstate st, *stp = &st; 4732 1.2.6.2 yamt struct nfslock lo, *lop = &lo; 4733 1.2.6.2 yamt int error = 0; 4734 1.2.6.2 yamt nfsquad_t clientid; 4735 1.2.6.2 yamt 4736 1.2.6.2 yamt if (NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_SIZE)) { 4737 1.2.6.2 yamt stp->ls_flags = (NFSLCK_CHECK | NFSLCK_WRITEACCESS); 4738 1.2.6.2 yamt lop->lo_first = nvap->na_size; 4739 1.2.6.2 yamt } else { 4740 1.2.6.2 yamt stp->ls_flags = 0; 4741 1.2.6.2 yamt lop->lo_first = 0; 4742 1.2.6.2 yamt } 4743 1.2.6.2 yamt if (NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_OWNER) || 4744 1.2.6.2 yamt NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_OWNERGROUP) || 4745 1.2.6.2 yamt NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_MODE) || 4746 1.2.6.2 yamt NFSISSET_ATTRBIT(attrbitp, NFSATTRBIT_ACL)) 4747 1.2.6.2 yamt stp->ls_flags |= NFSLCK_SETATTR; 4748 1.2.6.2 yamt if (stp->ls_flags == 0) 4749 1.2.6.2 yamt goto out; 4750 1.2.6.2 yamt lop->lo_end = NFS64BITSSET; 4751 1.2.6.2 yamt lop->lo_flags = NFSLCK_WRITE; 4752 1.2.6.2 yamt stp->ls_ownerlen = 0; 4753 1.2.6.2 yamt stp->ls_op = NULL; 4754 1.2.6.2 yamt stp->ls_uid = nd->nd_cred->cr_uid; 4755 1.2.6.2 yamt stp->ls_stateid.seqid = stateidp->seqid; 4756 1.2.6.2 yamt clientid.lval[0] = stp->ls_stateid.other[0] = stateidp->other[0]; 4757 1.2.6.2 yamt clientid.lval[1] = stp->ls_stateid.other[1] = stateidp->other[1]; 4758 1.2.6.2 yamt stp->ls_stateid.other[2] = stateidp->other[2]; 4759 1.2.6.2 yamt error = nfsrv_lockctrl(vp, &stp, &lop, NULL, clientid, 4760 1.2.6.2 yamt stateidp, exp, nd, p); 4761 1.2.6.2 yamt 4762 1.2.6.2 yamt out: 4763 1.2.6.2 yamt NFSEXITCODE2(error, nd); 4764 1.2.6.2 yamt return (error); 4765 1.2.6.2 yamt } 4766 1.2.6.2 yamt 4767 1.2.6.2 yamt /* 4768 1.2.6.2 yamt * Check for a write delegation and do a CBGETATTR if there is one, updating 4769 1.2.6.2 yamt * the attributes, as required. 4770 1.2.6.2 yamt * Should I return an error if I can't get the attributes? (For now, I'll 4771 1.2.6.2 yamt * just return ok. 4772 1.2.6.2 yamt */ 4773 1.2.6.2 yamt APPLESTATIC int 4774 1.2.6.2 yamt nfsrv_checkgetattr(struct nfsrv_descript *nd, vnode_t vp, 4775 1.2.6.2 yamt struct nfsvattr *nvap, nfsattrbit_t *attrbitp, struct ucred *cred, 4776 1.2.6.2 yamt NFSPROC_T *p) 4777 1.2.6.2 yamt { 4778 1.2.6.2 yamt struct nfsstate *stp; 4779 1.2.6.2 yamt struct nfslockfile *lfp; 4780 1.2.6.2 yamt struct nfsclient *clp; 4781 1.2.6.2 yamt struct nfsvattr nva; 4782 1.2.6.2 yamt fhandle_t nfh; 4783 1.2.6.2 yamt int error = 0; 4784 1.2.6.2 yamt nfsattrbit_t cbbits; 4785 1.2.6.2 yamt u_quad_t delegfilerev; 4786 1.2.6.2 yamt 4787 1.2.6.2 yamt NFSCBGETATTR_ATTRBIT(attrbitp, &cbbits); 4788 1.2.6.2 yamt if (!NFSNONZERO_ATTRBIT(&cbbits)) 4789 1.2.6.2 yamt goto out; 4790 1.2.6.2 yamt 4791 1.2.6.2 yamt /* 4792 1.2.6.2 yamt * Get the lock file structure. 4793 1.2.6.2 yamt * (A return of -1 means no associated state, so return ok.) 4794 1.2.6.2 yamt */ 4795 1.2.6.2 yamt error = nfsrv_getlockfh(vp, NFSLCK_CHECK, NULL, &nfh, p); 4796 1.2.6.2 yamt NFSLOCKSTATE(); 4797 1.2.6.2 yamt if (!error) 4798 1.2.6.2 yamt error = nfsrv_getlockfile(NFSLCK_CHECK, NULL, &lfp, &nfh, 0); 4799 1.2.6.2 yamt if (error) { 4800 1.2.6.2 yamt NFSUNLOCKSTATE(); 4801 1.2.6.2 yamt if (error == -1) 4802 1.2.6.2 yamt error = 0; 4803 1.2.6.2 yamt goto out; 4804 1.2.6.2 yamt } 4805 1.2.6.2 yamt 4806 1.2.6.2 yamt /* 4807 1.2.6.2 yamt * Now, look for a write delegation. 4808 1.2.6.2 yamt */ 4809 1.2.6.2 yamt LIST_FOREACH(stp, &lfp->lf_deleg, ls_file) { 4810 1.2.6.2 yamt if (stp->ls_flags & NFSLCK_DELEGWRITE) 4811 1.2.6.2 yamt break; 4812 1.2.6.2 yamt } 4813 1.2.6.2 yamt if (stp == NULL) { 4814 1.2.6.2 yamt NFSUNLOCKSTATE(); 4815 1.2.6.2 yamt goto out; 4816 1.2.6.2 yamt } 4817 1.2.6.2 yamt clp = stp->ls_clp; 4818 1.2.6.2 yamt delegfilerev = stp->ls_filerev; 4819 1.2.6.2 yamt 4820 1.2.6.2 yamt /* 4821 1.2.6.2 yamt * If the Write delegation was issued as a part of this Compound RPC 4822 1.2.6.2 yamt * or if we have an Implied Clientid (used in a previous Op in this 4823 1.2.6.2 yamt * compound) and it is the client the delegation was issued to, 4824 1.2.6.2 yamt * just return ok. 4825 1.2.6.2 yamt * I also assume that it is from the same client iff the network 4826 1.2.6.2 yamt * host IP address is the same as the callback address. (Not 4827 1.2.6.2 yamt * exactly correct by the RFC, but avoids a lot of Getattr 4828 1.2.6.2 yamt * callbacks.) 4829 1.2.6.2 yamt */ 4830 1.2.6.2 yamt if (nd->nd_compref == stp->ls_compref || 4831 1.2.6.2 yamt ((nd->nd_flag & ND_IMPLIEDCLID) && 4832 1.2.6.2 yamt clp->lc_clientid.qval == nd->nd_clientid.qval) || 4833 1.2.6.2 yamt nfsaddr2_match(clp->lc_req.nr_nam, nd->nd_nam)) { 4834 1.2.6.2 yamt NFSUNLOCKSTATE(); 4835 1.2.6.2 yamt goto out; 4836 1.2.6.2 yamt } 4837 1.2.6.2 yamt 4838 1.2.6.2 yamt /* 4839 1.2.6.2 yamt * We are now done with the delegation state structure, 4840 1.2.6.2 yamt * so the statelock can be released and we can now tsleep(). 4841 1.2.6.2 yamt */ 4842 1.2.6.2 yamt 4843 1.2.6.2 yamt /* 4844 1.2.6.2 yamt * Now, we must do the CB Getattr callback, to see if Change or Size 4845 1.2.6.2 yamt * has changed. 4846 1.2.6.2 yamt */ 4847 1.2.6.2 yamt if (clp->lc_expiry >= NFSD_MONOSEC) { 4848 1.2.6.2 yamt NFSUNLOCKSTATE(); 4849 1.2.6.2 yamt NFSVNO_ATTRINIT(&nva); 4850 1.2.6.2 yamt nva.na_filerev = NFS64BITSSET; 4851 1.2.6.2 yamt error = nfsrv_docallback(clp, NFSV4OP_CBGETATTR, NULL, 4852 1.2.6.2 yamt 0, &nfh, &nva, &cbbits, p); 4853 1.2.6.2 yamt if (!error) { 4854 1.2.6.2 yamt if ((nva.na_filerev != NFS64BITSSET && 4855 1.2.6.2 yamt nva.na_filerev > delegfilerev) || 4856 1.2.6.2 yamt (NFSVNO_ISSETSIZE(&nva) && 4857 1.2.6.2 yamt nva.na_size != nvap->na_size)) { 4858 1.2.6.2 yamt nfsvno_updfilerev(vp, nvap, cred, p); 4859 1.2.6.2 yamt if (NFSVNO_ISSETSIZE(&nva)) 4860 1.2.6.2 yamt nvap->na_size = nva.na_size; 4861 1.2.6.2 yamt } 4862 1.2.6.2 yamt } 4863 1.2.6.2 yamt } else { 4864 1.2.6.2 yamt NFSUNLOCKSTATE(); 4865 1.2.6.2 yamt } 4866 1.2.6.2 yamt error = 0; 4867 1.2.6.2 yamt 4868 1.2.6.2 yamt out: 4869 1.2.6.2 yamt NFSEXITCODE2(error, nd); 4870 1.2.6.2 yamt return (error); 4871 1.2.6.2 yamt } 4872 1.2.6.2 yamt 4873 1.2.6.2 yamt /* 4874 1.2.6.2 yamt * This function looks for openowners that haven't had any opens for 4875 1.2.6.2 yamt * a while and throws them away. Called by an nfsd when NFSNSF_NOOPENS 4876 1.2.6.2 yamt * is set. 4877 1.2.6.2 yamt */ 4878 1.2.6.2 yamt APPLESTATIC void 4879 1.2.6.2 yamt nfsrv_throwawayopens(NFSPROC_T *p) 4880 1.2.6.2 yamt { 4881 1.2.6.2 yamt struct nfsclient *clp, *nclp; 4882 1.2.6.2 yamt struct nfsstate *stp, *nstp; 4883 1.2.6.2 yamt int i; 4884 1.2.6.2 yamt 4885 1.2.6.2 yamt NFSLOCKSTATE(); 4886 1.2.6.2 yamt nfsrv_stablefirst.nsf_flags &= ~NFSNSF_NOOPENS; 4887 1.2.6.2 yamt /* 4888 1.2.6.2 yamt * For each client... 4889 1.2.6.2 yamt */ 4890 1.2.6.2 yamt for (i = 0; i < NFSCLIENTHASHSIZE; i++) { 4891 1.2.6.2 yamt LIST_FOREACH_SAFE(clp, &nfsclienthash[i], lc_hash, nclp) { 4892 1.2.6.2 yamt LIST_FOREACH_SAFE(stp, &clp->lc_open, ls_list, nstp) { 4893 1.2.6.2 yamt if (LIST_EMPTY(&stp->ls_open) && 4894 1.2.6.2 yamt (stp->ls_noopens > NFSNOOPEN || 4895 1.2.6.2 yamt (nfsrv_openpluslock * 2) > 4896 1.2.6.2 yamt NFSRV_V4STATELIMIT)) 4897 1.2.6.2 yamt nfsrv_freeopenowner(stp, 0, p); 4898 1.2.6.2 yamt } 4899 1.2.6.2 yamt } 4900 1.2.6.2 yamt } 4901 1.2.6.2 yamt NFSUNLOCKSTATE(); 4902 1.2.6.2 yamt } 4903 1.2.6.2 yamt 4904 1.2.6.2 yamt /* 4905 1.2.6.2 yamt * This function checks to see if the credentials are the same. 4906 1.2.6.2 yamt * Returns 1 for not same, 0 otherwise. 4907 1.2.6.2 yamt */ 4908 1.2.6.2 yamt static int 4909 1.2.6.2 yamt nfsrv_notsamecredname(struct nfsrv_descript *nd, struct nfsclient *clp) 4910 1.2.6.2 yamt { 4911 1.2.6.2 yamt 4912 1.2.6.2 yamt if (nd->nd_flag & ND_GSS) { 4913 1.2.6.2 yamt if (!(clp->lc_flags & LCL_GSS)) 4914 1.2.6.2 yamt return (1); 4915 1.2.6.2 yamt if (clp->lc_flags & LCL_NAME) { 4916 1.2.6.2 yamt if (nd->nd_princlen != clp->lc_namelen || 4917 1.2.6.2 yamt NFSBCMP(nd->nd_principal, clp->lc_name, 4918 1.2.6.2 yamt clp->lc_namelen)) 4919 1.2.6.2 yamt return (1); 4920 1.2.6.2 yamt else 4921 1.2.6.2 yamt return (0); 4922 1.2.6.2 yamt } 4923 1.2.6.2 yamt if (nd->nd_cred->cr_uid == clp->lc_uid) 4924 1.2.6.2 yamt return (0); 4925 1.2.6.2 yamt else 4926 1.2.6.2 yamt return (1); 4927 1.2.6.2 yamt } else if (clp->lc_flags & LCL_GSS) 4928 1.2.6.2 yamt return (1); 4929 1.2.6.2 yamt /* 4930 1.2.6.2 yamt * For AUTH_SYS, allow the same uid or root. (This is underspecified 4931 1.2.6.2 yamt * in RFC3530, which talks about principals, but doesn't say anything 4932 1.2.6.2 yamt * about uids for AUTH_SYS.) 4933 1.2.6.2 yamt */ 4934 1.2.6.2 yamt if (nd->nd_cred->cr_uid == clp->lc_uid || nd->nd_cred->cr_uid == 0) 4935 1.2.6.2 yamt return (0); 4936 1.2.6.2 yamt else 4937 1.2.6.2 yamt return (1); 4938 1.2.6.2 yamt } 4939 1.2.6.2 yamt 4940 1.2.6.2 yamt /* 4941 1.2.6.2 yamt * Calculate the lease expiry time. 4942 1.2.6.2 yamt */ 4943 1.2.6.2 yamt static time_t 4944 1.2.6.2 yamt nfsrv_leaseexpiry(void) 4945 1.2.6.2 yamt { 4946 1.2.6.2 yamt 4947 1.2.6.2 yamt if (nfsrv_stablefirst.nsf_eograce > NFSD_MONOSEC) 4948 1.2.6.2 yamt return (NFSD_MONOSEC + 2 * (nfsrv_lease + NFSRV_LEASEDELTA)); 4949 1.2.6.2 yamt return (NFSD_MONOSEC + nfsrv_lease + NFSRV_LEASEDELTA); 4950 1.2.6.2 yamt } 4951 1.2.6.2 yamt 4952 1.2.6.2 yamt /* 4953 1.2.6.2 yamt * Delay the delegation timeout as far as ls_delegtimelimit, as required. 4954 1.2.6.2 yamt */ 4955 1.2.6.2 yamt static void 4956 1.2.6.2 yamt nfsrv_delaydelegtimeout(struct nfsstate *stp) 4957 1.2.6.2 yamt { 4958 1.2.6.2 yamt 4959 1.2.6.2 yamt if ((stp->ls_flags & NFSLCK_DELEGRECALL) == 0) 4960 1.2.6.2 yamt return; 4961 1.2.6.2 yamt 4962 1.2.6.2 yamt if ((stp->ls_delegtime + 15) > NFSD_MONOSEC && 4963 1.2.6.2 yamt stp->ls_delegtime < stp->ls_delegtimelimit) { 4964 1.2.6.2 yamt stp->ls_delegtime += nfsrv_lease; 4965 1.2.6.2 yamt if (stp->ls_delegtime > stp->ls_delegtimelimit) 4966 1.2.6.2 yamt stp->ls_delegtime = stp->ls_delegtimelimit; 4967 1.2.6.2 yamt } 4968 1.2.6.2 yamt } 4969 1.2.6.2 yamt 4970 1.2.6.2 yamt /* 4971 1.2.6.2 yamt * This function checks to see if there is any other state associated 4972 1.2.6.2 yamt * with the openowner for this Open. 4973 1.2.6.2 yamt * It returns 1 if there is no other state, 0 otherwise. 4974 1.2.6.2 yamt */ 4975 1.2.6.2 yamt static int 4976 1.2.6.2 yamt nfsrv_nootherstate(struct nfsstate *stp) 4977 1.2.6.2 yamt { 4978 1.2.6.2 yamt struct nfsstate *tstp; 4979 1.2.6.2 yamt 4980 1.2.6.2 yamt LIST_FOREACH(tstp, &stp->ls_openowner->ls_open, ls_list) { 4981 1.2.6.2 yamt if (tstp != stp || !LIST_EMPTY(&tstp->ls_lock)) 4982 1.2.6.2 yamt return (0); 4983 1.2.6.2 yamt } 4984 1.2.6.2 yamt return (1); 4985 1.2.6.2 yamt } 4986 1.2.6.2 yamt 4987 1.2.6.2 yamt /* 4988 1.2.6.2 yamt * Create a list of lock deltas (changes to local byte range locking 4989 1.2.6.2 yamt * that can be rolled back using the list) and apply the changes via 4990 1.2.6.2 yamt * nfsvno_advlock(). Optionally, lock the list. It is expected that either 4991 1.2.6.2 yamt * the rollback or update function will be called after this. 4992 1.2.6.2 yamt * It returns an error (and rolls back, as required), if any nfsvno_advlock() 4993 1.2.6.2 yamt * call fails. If it returns an error, it will unlock the list. 4994 1.2.6.2 yamt */ 4995 1.2.6.2 yamt static int 4996 1.2.6.2 yamt nfsrv_locallock(vnode_t vp, struct nfslockfile *lfp, int flags, 4997 1.2.6.2 yamt uint64_t first, uint64_t end, struct nfslockconflict *cfp, NFSPROC_T *p) 4998 1.2.6.2 yamt { 4999 1.2.6.2 yamt struct nfslock *lop, *nlop; 5000 1.2.6.2 yamt int error = 0; 5001 1.2.6.2 yamt 5002 1.2.6.2 yamt /* Loop through the list of locks. */ 5003 1.2.6.2 yamt lop = LIST_FIRST(&lfp->lf_locallock); 5004 1.2.6.2 yamt while (first < end && lop != NULL) { 5005 1.2.6.2 yamt nlop = LIST_NEXT(lop, lo_lckowner); 5006 1.2.6.2 yamt if (first >= lop->lo_end) { 5007 1.2.6.2 yamt /* not there yet */ 5008 1.2.6.2 yamt lop = nlop; 5009 1.2.6.2 yamt } else if (first < lop->lo_first) { 5010 1.2.6.2 yamt /* new one starts before entry in list */ 5011 1.2.6.2 yamt if (end <= lop->lo_first) { 5012 1.2.6.2 yamt /* no overlap between old and new */ 5013 1.2.6.2 yamt error = nfsrv_dolocal(vp, lfp, flags, 5014 1.2.6.2 yamt NFSLCK_UNLOCK, first, end, cfp, p); 5015 1.2.6.2 yamt if (error != 0) 5016 1.2.6.2 yamt break; 5017 1.2.6.2 yamt first = end; 5018 1.2.6.2 yamt } else { 5019 1.2.6.2 yamt /* handle fragment overlapped with new one */ 5020 1.2.6.2 yamt error = nfsrv_dolocal(vp, lfp, flags, 5021 1.2.6.2 yamt NFSLCK_UNLOCK, first, lop->lo_first, cfp, 5022 1.2.6.2 yamt p); 5023 1.2.6.2 yamt if (error != 0) 5024 1.2.6.2 yamt break; 5025 1.2.6.2 yamt first = lop->lo_first; 5026 1.2.6.2 yamt } 5027 1.2.6.2 yamt } else { 5028 1.2.6.2 yamt /* new one overlaps this entry in list */ 5029 1.2.6.2 yamt if (end <= lop->lo_end) { 5030 1.2.6.2 yamt /* overlaps all of new one */ 5031 1.2.6.2 yamt error = nfsrv_dolocal(vp, lfp, flags, 5032 1.2.6.2 yamt lop->lo_flags, first, end, cfp, p); 5033 1.2.6.2 yamt if (error != 0) 5034 1.2.6.2 yamt break; 5035 1.2.6.2 yamt first = end; 5036 1.2.6.2 yamt } else { 5037 1.2.6.2 yamt /* handle fragment overlapped with new one */ 5038 1.2.6.2 yamt error = nfsrv_dolocal(vp, lfp, flags, 5039 1.2.6.2 yamt lop->lo_flags, first, lop->lo_end, cfp, p); 5040 1.2.6.2 yamt if (error != 0) 5041 1.2.6.2 yamt break; 5042 1.2.6.2 yamt first = lop->lo_end; 5043 1.2.6.2 yamt lop = nlop; 5044 1.2.6.2 yamt } 5045 1.2.6.2 yamt } 5046 1.2.6.2 yamt } 5047 1.2.6.2 yamt if (first < end && error == 0) 5048 1.2.6.2 yamt /* handle fragment past end of list */ 5049 1.2.6.2 yamt error = nfsrv_dolocal(vp, lfp, flags, NFSLCK_UNLOCK, first, 5050 1.2.6.2 yamt end, cfp, p); 5051 1.2.6.2 yamt 5052 1.2.6.2 yamt NFSEXITCODE(error); 5053 1.2.6.2 yamt return (error); 5054 1.2.6.2 yamt } 5055 1.2.6.2 yamt 5056 1.2.6.2 yamt /* 5057 1.2.6.2 yamt * Local lock unlock. Unlock all byte ranges that are no longer locked 5058 1.2.6.2 yamt * by NFSv4. To do this, unlock any subranges of first-->end that 5059 1.2.6.2 yamt * do not overlap with the byte ranges of any lock in the lfp->lf_lock 5060 1.2.6.2 yamt * list. This list has all locks for the file held by other 5061 1.2.6.2 yamt * <clientid, lockowner> tuples. The list is ordered by increasing 5062 1.2.6.2 yamt * lo_first value, but may have entries that overlap each other, for 5063 1.2.6.2 yamt * the case of read locks. 5064 1.2.6.2 yamt */ 5065 1.2.6.2 yamt static void 5066 1.2.6.2 yamt nfsrv_localunlock(vnode_t vp, struct nfslockfile *lfp, uint64_t init_first, 5067 1.2.6.2 yamt uint64_t init_end, NFSPROC_T *p) 5068 1.2.6.2 yamt { 5069 1.2.6.2 yamt struct nfslock *lop; 5070 1.2.6.2 yamt uint64_t first, end, prevfirst; 5071 1.2.6.2 yamt 5072 1.2.6.2 yamt first = init_first; 5073 1.2.6.2 yamt end = init_end; 5074 1.2.6.2 yamt while (first < init_end) { 5075 1.2.6.2 yamt /* Loop through all nfs locks, adjusting first and end */ 5076 1.2.6.2 yamt prevfirst = 0; 5077 1.2.6.2 yamt LIST_FOREACH(lop, &lfp->lf_lock, lo_lckfile) { 5078 1.2.6.2 yamt KASSERT(prevfirst <= lop->lo_first, 5079 1.2.6.2 yamt ("nfsv4 locks out of order")); 5080 1.2.6.2 yamt KASSERT(lop->lo_first < lop->lo_end, 5081 1.2.6.2 yamt ("nfsv4 bogus lock")); 5082 1.2.6.2 yamt prevfirst = lop->lo_first; 5083 1.2.6.2 yamt if (first >= lop->lo_first && 5084 1.2.6.2 yamt first < lop->lo_end) 5085 1.2.6.2 yamt /* 5086 1.2.6.2 yamt * Overlaps with initial part, so trim 5087 1.2.6.2 yamt * off that initial part by moving first past 5088 1.2.6.2 yamt * it. 5089 1.2.6.2 yamt */ 5090 1.2.6.2 yamt first = lop->lo_end; 5091 1.2.6.2 yamt else if (end > lop->lo_first && 5092 1.2.6.2 yamt lop->lo_first > first) { 5093 1.2.6.2 yamt /* 5094 1.2.6.2 yamt * This lock defines the end of the 5095 1.2.6.2 yamt * segment to unlock, so set end to the 5096 1.2.6.2 yamt * start of it and break out of the loop. 5097 1.2.6.2 yamt */ 5098 1.2.6.2 yamt end = lop->lo_first; 5099 1.2.6.2 yamt break; 5100 1.2.6.2 yamt } 5101 1.2.6.2 yamt if (first >= end) 5102 1.2.6.2 yamt /* 5103 1.2.6.2 yamt * There is no segment left to do, so 5104 1.2.6.2 yamt * break out of this loop and then exit 5105 1.2.6.2 yamt * the outer while() since first will be set 5106 1.2.6.2 yamt * to end, which must equal init_end here. 5107 1.2.6.2 yamt */ 5108 1.2.6.2 yamt break; 5109 1.2.6.2 yamt } 5110 1.2.6.2 yamt if (first < end) { 5111 1.2.6.2 yamt /* Unlock this segment */ 5112 1.2.6.2 yamt (void) nfsrv_dolocal(vp, lfp, NFSLCK_UNLOCK, 5113 1.2.6.2 yamt NFSLCK_READ, first, end, NULL, p); 5114 1.2.6.2 yamt nfsrv_locallock_commit(lfp, NFSLCK_UNLOCK, 5115 1.2.6.2 yamt first, end); 5116 1.2.6.2 yamt } 5117 1.2.6.2 yamt /* 5118 1.2.6.2 yamt * Now move past this segment and look for any further 5119 1.2.6.2 yamt * segment in the range, if there is one. 5120 1.2.6.2 yamt */ 5121 1.2.6.2 yamt first = end; 5122 1.2.6.2 yamt end = init_end; 5123 1.2.6.2 yamt } 5124 1.2.6.2 yamt } 5125 1.2.6.2 yamt 5126 1.2.6.2 yamt /* 5127 1.2.6.2 yamt * Do the local lock operation and update the rollback list, as required. 5128 1.2.6.2 yamt * Perform the rollback and return the error if nfsvno_advlock() fails. 5129 1.2.6.2 yamt */ 5130 1.2.6.2 yamt static int 5131 1.2.6.2 yamt nfsrv_dolocal(vnode_t vp, struct nfslockfile *lfp, int flags, int oldflags, 5132 1.2.6.2 yamt uint64_t first, uint64_t end, struct nfslockconflict *cfp, NFSPROC_T *p) 5133 1.2.6.2 yamt { 5134 1.2.6.2 yamt struct nfsrollback *rlp; 5135 1.2.6.2 yamt int error = 0, ltype, oldltype; 5136 1.2.6.2 yamt 5137 1.2.6.2 yamt if (flags & NFSLCK_WRITE) 5138 1.2.6.2 yamt ltype = F_WRLCK; 5139 1.2.6.2 yamt else if (flags & NFSLCK_READ) 5140 1.2.6.2 yamt ltype = F_RDLCK; 5141 1.2.6.2 yamt else 5142 1.2.6.2 yamt ltype = F_UNLCK; 5143 1.2.6.2 yamt if (oldflags & NFSLCK_WRITE) 5144 1.2.6.2 yamt oldltype = F_WRLCK; 5145 1.2.6.2 yamt else if (oldflags & NFSLCK_READ) 5146 1.2.6.2 yamt oldltype = F_RDLCK; 5147 1.2.6.2 yamt else 5148 1.2.6.2 yamt oldltype = F_UNLCK; 5149 1.2.6.2 yamt if (ltype == oldltype || (oldltype == F_WRLCK && ltype == F_RDLCK)) 5150 1.2.6.2 yamt /* nothing to do */ 5151 1.2.6.2 yamt goto out; 5152 1.2.6.2 yamt error = nfsvno_advlock(vp, ltype, first, end, p); 5153 1.2.6.2 yamt if (error != 0) { 5154 1.2.6.2 yamt if (cfp != NULL) { 5155 1.2.6.2 yamt cfp->cl_clientid.lval[0] = 0; 5156 1.2.6.2 yamt cfp->cl_clientid.lval[1] = 0; 5157 1.2.6.2 yamt cfp->cl_first = 0; 5158 1.2.6.2 yamt cfp->cl_end = NFS64BITSSET; 5159 1.2.6.2 yamt cfp->cl_flags = NFSLCK_WRITE; 5160 1.2.6.2 yamt cfp->cl_ownerlen = 5; 5161 1.2.6.2 yamt NFSBCOPY("LOCAL", cfp->cl_owner, 5); 5162 1.2.6.2 yamt } 5163 1.2.6.2 yamt nfsrv_locallock_rollback(vp, lfp, p); 5164 1.2.6.2 yamt } else if (ltype != F_UNLCK) { 5165 1.2.6.2 yamt rlp = malloc(sizeof (struct nfsrollback), M_NFSDROLLBACK, 5166 1.2.6.2 yamt M_WAITOK); 5167 1.2.6.2 yamt rlp->rlck_first = first; 5168 1.2.6.2 yamt rlp->rlck_end = end; 5169 1.2.6.2 yamt rlp->rlck_type = oldltype; 5170 1.2.6.2 yamt LIST_INSERT_HEAD(&lfp->lf_rollback, rlp, rlck_list); 5171 1.2.6.2 yamt } 5172 1.2.6.2 yamt 5173 1.2.6.2 yamt out: 5174 1.2.6.2 yamt NFSEXITCODE(error); 5175 1.2.6.2 yamt return (error); 5176 1.2.6.2 yamt } 5177 1.2.6.2 yamt 5178 1.2.6.2 yamt /* 5179 1.2.6.2 yamt * Roll back local lock changes and free up the rollback list. 5180 1.2.6.2 yamt */ 5181 1.2.6.2 yamt static void 5182 1.2.6.2 yamt nfsrv_locallock_rollback(vnode_t vp, struct nfslockfile *lfp, NFSPROC_T *p) 5183 1.2.6.2 yamt { 5184 1.2.6.2 yamt struct nfsrollback *rlp, *nrlp; 5185 1.2.6.2 yamt 5186 1.2.6.2 yamt LIST_FOREACH_SAFE(rlp, &lfp->lf_rollback, rlck_list, nrlp) { 5187 1.2.6.2 yamt (void) nfsvno_advlock(vp, rlp->rlck_type, rlp->rlck_first, 5188 1.2.6.2 yamt rlp->rlck_end, p); 5189 1.2.6.2 yamt free(rlp, M_NFSDROLLBACK); 5190 1.2.6.2 yamt } 5191 1.2.6.2 yamt LIST_INIT(&lfp->lf_rollback); 5192 1.2.6.2 yamt } 5193 1.2.6.2 yamt 5194 1.2.6.2 yamt /* 5195 1.2.6.2 yamt * Update local lock list and delete rollback list (ie now committed to the 5196 1.2.6.2 yamt * local locks). Most of the work is done by the internal function. 5197 1.2.6.2 yamt */ 5198 1.2.6.2 yamt static void 5199 1.2.6.2 yamt nfsrv_locallock_commit(struct nfslockfile *lfp, int flags, uint64_t first, 5200 1.2.6.2 yamt uint64_t end) 5201 1.2.6.2 yamt { 5202 1.2.6.2 yamt struct nfsrollback *rlp, *nrlp; 5203 1.2.6.2 yamt struct nfslock *new_lop, *other_lop; 5204 1.2.6.2 yamt 5205 1.2.6.2 yamt new_lop = malloc(sizeof (struct nfslock), M_NFSDLOCK, M_WAITOK); 5206 1.2.6.2 yamt if (flags & (NFSLCK_READ | NFSLCK_WRITE)) 5207 1.2.6.2 yamt other_lop = malloc(sizeof (struct nfslock), M_NFSDLOCK, 5208 1.2.6.2 yamt M_WAITOK); 5209 1.2.6.2 yamt else 5210 1.2.6.2 yamt other_lop = NULL; 5211 1.2.6.2 yamt new_lop->lo_flags = flags; 5212 1.2.6.2 yamt new_lop->lo_first = first; 5213 1.2.6.2 yamt new_lop->lo_end = end; 5214 1.2.6.2 yamt nfsrv_updatelock(NULL, &new_lop, &other_lop, lfp); 5215 1.2.6.2 yamt if (new_lop != NULL) 5216 1.2.6.2 yamt free(new_lop, M_NFSDLOCK); 5217 1.2.6.2 yamt if (other_lop != NULL) 5218 1.2.6.2 yamt free(other_lop, M_NFSDLOCK); 5219 1.2.6.2 yamt 5220 1.2.6.2 yamt /* and get rid of the rollback list */ 5221 1.2.6.2 yamt LIST_FOREACH_SAFE(rlp, &lfp->lf_rollback, rlck_list, nrlp) 5222 1.2.6.2 yamt free(rlp, M_NFSDROLLBACK); 5223 1.2.6.2 yamt LIST_INIT(&lfp->lf_rollback); 5224 1.2.6.2 yamt } 5225 1.2.6.2 yamt 5226 1.2.6.2 yamt /* 5227 1.2.6.2 yamt * Lock the struct nfslockfile for local lock updating. 5228 1.2.6.2 yamt */ 5229 1.2.6.2 yamt static void 5230 1.2.6.2 yamt nfsrv_locklf(struct nfslockfile *lfp) 5231 1.2.6.2 yamt { 5232 1.2.6.2 yamt int gotlock; 5233 1.2.6.2 yamt 5234 1.2.6.2 yamt /* lf_usecount ensures *lfp won't be free'd */ 5235 1.2.6.2 yamt lfp->lf_usecount++; 5236 1.2.6.2 yamt do { 5237 1.2.6.2 yamt gotlock = nfsv4_lock(&lfp->lf_locallock_lck, 1, NULL, 5238 1.2.6.2 yamt NFSSTATEMUTEXPTR, NULL); 5239 1.2.6.2 yamt } while (gotlock == 0); 5240 1.2.6.2 yamt lfp->lf_usecount--; 5241 1.2.6.2 yamt } 5242 1.2.6.2 yamt 5243 1.2.6.2 yamt /* 5244 1.2.6.2 yamt * Unlock the struct nfslockfile after local lock updating. 5245 1.2.6.2 yamt */ 5246 1.2.6.2 yamt static void 5247 1.2.6.2 yamt nfsrv_unlocklf(struct nfslockfile *lfp) 5248 1.2.6.2 yamt { 5249 1.2.6.2 yamt 5250 1.2.6.2 yamt nfsv4_unlock(&lfp->lf_locallock_lck, 0); 5251 1.2.6.2 yamt } 5252 1.2.6.2 yamt 5253 1.2.6.2 yamt /* 5254 1.2.6.2 yamt * Clear out all state for the NFSv4 server. 5255 1.2.6.2 yamt * Must be called by a thread that can sleep when no nfsds are running. 5256 1.2.6.2 yamt */ 5257 1.2.6.2 yamt void 5258 1.2.6.2 yamt nfsrv_throwawayallstate(NFSPROC_T *p) 5259 1.2.6.2 yamt { 5260 1.2.6.2 yamt struct nfsclient *clp, *nclp; 5261 1.2.6.2 yamt struct nfslockfile *lfp, *nlfp; 5262 1.2.6.2 yamt int i; 5263 1.2.6.2 yamt 5264 1.2.6.2 yamt /* 5265 1.2.6.2 yamt * For each client, clean out the state and then free the structure. 5266 1.2.6.2 yamt */ 5267 1.2.6.2 yamt for (i = 0; i < NFSCLIENTHASHSIZE; i++) { 5268 1.2.6.2 yamt LIST_FOREACH_SAFE(clp, &nfsclienthash[i], lc_hash, nclp) { 5269 1.2.6.2 yamt nfsrv_cleanclient(clp, p); 5270 1.2.6.2 yamt nfsrv_freedeleglist(&clp->lc_deleg); 5271 1.2.6.2 yamt nfsrv_freedeleglist(&clp->lc_olddeleg); 5272 1.2.6.2 yamt free(clp, M_NFSDCLIENT); 5273 1.2.6.2 yamt } 5274 1.2.6.2 yamt } 5275 1.2.6.2 yamt 5276 1.2.6.2 yamt /* 5277 1.2.6.2 yamt * Also, free up any remaining lock file structures. 5278 1.2.6.2 yamt */ 5279 1.2.6.2 yamt for (i = 0; i < NFSLOCKHASHSIZE; i++) { 5280 1.2.6.2 yamt LIST_FOREACH_SAFE(lfp, &nfslockhash[i], lf_hash, nlfp) { 5281 1.2.6.2 yamt printf("nfsd unload: fnd a lock file struct\n"); 5282 1.2.6.2 yamt nfsrv_freenfslockfile(lfp); 5283 1.2.6.2 yamt } 5284 1.2.6.2 yamt } 5285 1.2.6.2 yamt } 5286 1.2.6.2 yamt 5287
Indexes created Thu Oct 02 14:10:14 GMT 2025