nfs_fha_new.c revision 1.1
1 /* $NetBSD: nfs_fha_new.c,v 1.1 2013/09/30 07:19:46 dholland Exp $ */ 2 /*- 3 * Copyright (c) 2008 Isilon Inc http://www.isilon.com/ 4 * Copyright (c) 2013 Spectra Logic Corporation 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 /* __FBSDID("FreeBSD: head/sys/fs/nfsserver/nfs_fha_new.c 249596 2013-04-17 22:42:43Z ken "); */ 30 __RCSID("$NetBSD: nfs_fha_new.c,v 1.1 2013/09/30 07:19:46 dholland Exp $"); 31 32 #include <fs/nfs/nfsport.h> 33 34 #include <rpc/rpc.h> 35 #include <nfs/nfs_fha.h> 36 #include <fs/nfs/xdr_subs.h> 37 #include <fs/nfs/nfs.h> 38 #include <fs/nfs/nfsproto.h> 39 #include <fs/nfs/nfsm_subs.h> 40 #include <fs/nfsserver/nfs_fha_new.h> 41 42 static void fhanew_init(void *foo); 43 static void fhanew_uninit(void *foo); 44 rpcproc_t fhanew_get_procnum(rpcproc_t procnum); 45 int fhanew_realign(struct mbuf **mb, int malloc_flags); 46 int fhanew_get_fh(fhandle_t *fh, int v3, struct mbuf **md, caddr_t *dpos); 47 int fhanew_is_read(rpcproc_t procnum); 48 int fhanew_is_write(rpcproc_t procnum); 49 int fhanew_get_offset(struct mbuf **md, caddr_t *dpos, int v3, 50 struct fha_info *info); 51 int fhanew_no_offset(rpcproc_t procnum); 52 void fhanew_set_locktype(rpcproc_t procnum, struct fha_info *info); 53 static int fhenew_stats_sysctl(SYSCTL_HANDLER_ARGS); 54 55 static struct fha_params fhanew_softc; 56 57 SYSCTL_DECL(_vfs_nfsd); 58 59 extern int newnfs_nfsv3_procid[]; 60 extern SVCPOOL *nfsrvd_pool; 61 62 SYSINIT(nfs_fhanew, SI_SUB_ROOT_CONF, SI_ORDER_ANY, fhanew_init, NULL); 63 SYSUNINIT(nfs_fhanew, SI_SUB_ROOT_CONF, SI_ORDER_ANY, fhanew_uninit, NULL); 64 65 static void 66 fhanew_init(void *foo) 67 { 68 struct fha_params *softc; 69 70 softc = &fhanew_softc; 71 72 bzero(softc, sizeof(*softc)); 73 74 /* 75 * Setup the callbacks for this FHA personality. 76 */ 77 softc->callbacks.get_procnum = fhanew_get_procnum; 78 softc->callbacks.realign = fhanew_realign; 79 softc->callbacks.get_fh = fhanew_get_fh; 80 softc->callbacks.is_read = fhanew_is_read; 81 softc->callbacks.is_write = fhanew_is_write; 82 softc->callbacks.get_offset = fhanew_get_offset; 83 softc->callbacks.no_offset = fhanew_no_offset; 84 softc->callbacks.set_locktype = fhanew_set_locktype; 85 softc->callbacks.fhe_stats_sysctl = fhenew_stats_sysctl; 86 87 snprintf(softc->server_name, sizeof(softc->server_name), 88 FHANEW_SERVER_NAME); 89 90 softc->pool = &nfsrvd_pool; 91 92 /* 93 * Initialize the sysctl context list for the fha module. 94 */ 95 sysctl_ctx_init(&softc->sysctl_ctx); 96 softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx, 97 SYSCTL_STATIC_CHILDREN(_vfs_nfsd), OID_AUTO, "fha", CTLFLAG_RD, 98 0, "fha node"); 99 if (softc->sysctl_tree == NULL) { 100 printf("%s: unable to allocate sysctl tree\n", __func__); 101 return; 102 } 103 104 fha_init(softc); 105 } 106 107 static void 108 fhanew_uninit(void *foo) 109 { 110 struct fha_params *softc; 111 112 softc = &fhanew_softc; 113 114 fha_uninit(softc); 115 } 116 117 rpcproc_t 118 fhanew_get_procnum(rpcproc_t procnum) 119 { 120 if (procnum > NFSV2PROC_STATFS) 121 return (-1); 122 123 return (newnfs_nfsv3_procid[procnum]); 124 } 125 126 int 127 fhanew_realign(struct mbuf **mb, int malloc_flags) 128 { 129 return (newnfs_realign(mb, malloc_flags)); 130 } 131 132 int 133 fhanew_get_fh(fhandle_t *fh, int v3, struct mbuf **md, caddr_t *dpos) 134 { 135 struct nfsrv_descript lnd, *nd; 136 uint32_t *tl; 137 int error, len; 138 139 error = 0; 140 len = 0; 141 nd = &lnd; 142 143 nd->nd_md = *md; 144 nd->nd_dpos = *dpos; 145 146 if (v3) { 147 NFSM_DISSECT_NONBLOCK(tl, uint32_t *, NFSX_UNSIGNED); 148 if ((len = fxdr_unsigned(int, *tl)) <= 0 || len > NFSX_FHMAX) { 149 error = EBADRPC; 150 goto nfsmout; 151 } 152 } else { 153 len = NFSX_V2FH; 154 } 155 156 if (len != 0) { 157 NFSM_DISSECT_NONBLOCK(tl, uint32_t *, len); 158 bcopy(tl, fh, len); 159 } else 160 bzero(fh, sizeof(*fh)); 161 162 nfsmout: 163 *md = nd->nd_md; 164 *dpos = nd->nd_dpos; 165 166 return (error); 167 } 168 169 int 170 fhanew_is_read(rpcproc_t procnum) 171 { 172 if (procnum == NFSPROC_READ) 173 return (1); 174 else 175 return (0); 176 } 177 178 int 179 fhanew_is_write(rpcproc_t procnum) 180 { 181 if (procnum == NFSPROC_WRITE) 182 return (1); 183 else 184 return (0); 185 } 186 187 int 188 fhanew_get_offset(struct mbuf **md, caddr_t *dpos, int v3, 189 struct fha_info *info) 190 { 191 struct nfsrv_descript lnd, *nd; 192 uint32_t *tl; 193 int error; 194 195 error = 0; 196 197 nd = &lnd; 198 nd->nd_md = *md; 199 nd->nd_dpos = *dpos; 200 201 if (v3) { 202 NFSM_DISSECT_NONBLOCK(tl, uint32_t *, 2 * NFSX_UNSIGNED); 203 info->offset = fxdr_hyper(tl); 204 } else { 205 NFSM_DISSECT_NONBLOCK(tl, uint32_t *, NFSX_UNSIGNED); 206 info->offset = fxdr_unsigned(uint32_t, *tl); 207 } 208 209 nfsmout: 210 *md = nd->nd_md; 211 *dpos = nd->nd_dpos; 212 213 return (error); 214 } 215 216 int 217 fhanew_no_offset(rpcproc_t procnum) 218 { 219 if (procnum == NFSPROC_FSSTAT || 220 procnum == NFSPROC_FSINFO || 221 procnum == NFSPROC_PATHCONF || 222 procnum == NFSPROC_NOOP || 223 procnum == NFSPROC_NULL) 224 return (1); 225 else 226 return (0); 227 } 228 229 void 230 fhanew_set_locktype(rpcproc_t procnum, struct fha_info *info) 231 { 232 switch (procnum) { 233 case NFSPROC_NULL: 234 case NFSPROC_GETATTR: 235 case NFSPROC_LOOKUP: 236 case NFSPROC_ACCESS: 237 case NFSPROC_READLINK: 238 case NFSPROC_READ: 239 case NFSPROC_READDIR: 240 case NFSPROC_READDIRPLUS: 241 case NFSPROC_WRITE: 242 info->locktype = LK_SHARED; 243 break; 244 case NFSPROC_SETATTR: 245 case NFSPROC_CREATE: 246 case NFSPROC_MKDIR: 247 case NFSPROC_SYMLINK: 248 case NFSPROC_MKNOD: 249 case NFSPROC_REMOVE: 250 case NFSPROC_RMDIR: 251 case NFSPROC_RENAME: 252 case NFSPROC_LINK: 253 case NFSPROC_FSSTAT: 254 case NFSPROC_FSINFO: 255 case NFSPROC_PATHCONF: 256 case NFSPROC_COMMIT: 257 case NFSPROC_NOOP: 258 info->locktype = LK_EXCLUSIVE; 259 break; 260 } 261 } 262 263 static int 264 fhenew_stats_sysctl(SYSCTL_HANDLER_ARGS) 265 { 266 return (fhe_stats_sysctl(oidp, arg1, arg2, req, &fhanew_softc)); 267 } 268 269 270 SVCTHREAD * 271 fhanew_assign(SVCTHREAD *this_thread, struct svc_req *req) 272 { 273 return (fha_assign(this_thread, req, &fhanew_softc)); 274 } 275
Indexes created Sun Sep 21 16:09:51 GMT 2025