1 /* $NetBSD: nfs_fha_new.c,v 1.2 2016/12/13 21:50:32 pgoyette 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 259765 2013-12-23 08:43:16Z mav "); */ 30 __RCSID("$NetBSD: nfs_fha_new.c,v 1.2 2016/12/13 21:50:32 pgoyette Exp $"); 31 32 #include <fs/nfs/common/nfsport.h> 33 34 #include <rpc/rpc.h> 35 #include <fs/nfs/common/nfs_fha.h> 36 #include <fs/nfs/common/xdr_subs.h> 37 #include <fs/nfs/common/nfs.h> 38 #include <fs/nfs/common/nfsproto.h> 39 #include <fs/nfs/common/nfsm_subs.h> 40 #include <fs/nfs/server/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(uint64_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(uint64_t *fh, int v3, struct mbuf **md, caddr_t *dpos) 134 { 135 struct nfsrv_descript lnd, *nd; 136 uint32_t *tl; 137 uint8_t *buf; 138 uint64_t t; 139 int error, len, i; 140 141 error = 0; 142 len = 0; 143 nd = &lnd; 144 145 nd->nd_md = *md; 146 nd->nd_dpos = *dpos; 147 148 if (v3) { 149 NFSM_DISSECT_NONBLOCK(tl, uint32_t *, NFSX_UNSIGNED); 150 if ((len = fxdr_unsigned(int, *tl)) <= 0 || len > NFSX_FHMAX) { 151 error = EBADRPC; 152 goto nfsmout; 153 } 154 } else { 155 len = NFSX_V2FH; 156 } 157 158 t = 0; 159 if (len != 0) { 160 NFSM_DISSECT_NONBLOCK(buf, uint8_t *, len); 161 for (i = 0; i < len; i++) 162 t ^= ((uint64_t)buf[i] << (i & 7) * 8); 163 } 164 *fh = t; 165 166 nfsmout: 167 *md = nd->nd_md; 168 *dpos = nd->nd_dpos; 169 170 return (error); 171 } 172 173 int 174 fhanew_is_read(rpcproc_t procnum) 175 { 176 if (procnum == NFSPROC_READ) 177 return (1); 178 else 179 return (0); 180 } 181 182 int 183 fhanew_is_write(rpcproc_t procnum) 184 { 185 if (procnum == NFSPROC_WRITE) 186 return (1); 187 else 188 return (0); 189 } 190 191 int 192 fhanew_get_offset(struct mbuf **md, caddr_t *dpos, int v3, 193 struct fha_info *info) 194 { 195 struct nfsrv_descript lnd, *nd; 196 uint32_t *tl; 197 int error; 198 199 error = 0; 200 201 nd = &lnd; 202 nd->nd_md = *md; 203 nd->nd_dpos = *dpos; 204 205 if (v3) { 206 NFSM_DISSECT_NONBLOCK(tl, uint32_t *, 2 * NFSX_UNSIGNED); 207 info->offset = fxdr_hyper(tl); 208 } else { 209 NFSM_DISSECT_NONBLOCK(tl, uint32_t *, NFSX_UNSIGNED); 210 info->offset = fxdr_unsigned(uint32_t, *tl); 211 } 212 213 nfsmout: 214 *md = nd->nd_md; 215 *dpos = nd->nd_dpos; 216 217 return (error); 218 } 219 220 int 221 fhanew_no_offset(rpcproc_t procnum) 222 { 223 if (procnum == NFSPROC_FSSTAT || 224 procnum == NFSPROC_FSINFO || 225 procnum == NFSPROC_PATHCONF || 226 procnum == NFSPROC_NOOP || 227 procnum == NFSPROC_NULL) 228 return (1); 229 else 230 return (0); 231 } 232 233 void 234 fhanew_set_locktype(rpcproc_t procnum, struct fha_info *info) 235 { 236 switch (procnum) { 237 case NFSPROC_NULL: 238 case NFSPROC_GETATTR: 239 case NFSPROC_LOOKUP: 240 case NFSPROC_ACCESS: 241 case NFSPROC_READLINK: 242 case NFSPROC_READ: 243 case NFSPROC_READDIR: 244 case NFSPROC_READDIRPLUS: 245 case NFSPROC_WRITE: 246 info->locktype = LK_SHARED; 247 break; 248 case NFSPROC_SETATTR: 249 case NFSPROC_CREATE: 250 case NFSPROC_MKDIR: 251 case NFSPROC_SYMLINK: 252 case NFSPROC_MKNOD: 253 case NFSPROC_REMOVE: 254 case NFSPROC_RMDIR: 255 case NFSPROC_RENAME: 256 case NFSPROC_LINK: 257 case NFSPROC_FSSTAT: 258 case NFSPROC_FSINFO: 259 case NFSPROC_PATHCONF: 260 case NFSPROC_COMMIT: 261 case NFSPROC_NOOP: 262 info->locktype = LK_EXCLUSIVE; 263 break; 264 } 265 } 266 267 static int 268 fhenew_stats_sysctl(SYSCTL_HANDLER_ARGS) 269 { 270 return (fhe_stats_sysctl(oidp, arg1, arg2, req, &fhanew_softc)); 271 } 272 273 274 SVCTHREAD * 275 fhanew_assign(SVCTHREAD *this_thread, struct svc_req *req) 276 { 277 return (fha_assign(this_thread, req, &fhanew_softc)); 278 } 279
Indexes created Sat Sep 20 22:09:52 GMT 2025