1/*- 2 * Copyright (c) 2008 Isilon Inc http://www.isilon.com/ 3 * Copyright (c) 2013 Spectra Logic Corporation 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> 28__FBSDID("$FreeBSD$"); 29 30#include <sys/param.h> 31#include <sys/systm.h> 32#include <sys/sysproto.h> 33#include <sys/kernel.h> 34#include <sys/vnode.h> 35#include <sys/malloc.h> 36#include <sys/mount.h> 37#include <sys/mbuf.h> 38#include <sys/sysctl.h> 39 40#include <rpc/rpc.h> 41#include <nfs/xdr_subs.h> 42#include <nfs/nfsproto.h> 43#include <nfs/nfs_fha.h> 44#include <nfsserver/nfs.h> 45#include <nfsserver/nfsm_subs.h> 46#include <nfsserver/nfs_fha_old.h> 47 48static void fhaold_init(void *foo); 49static void fhaold_uninit(void *foo); 50rpcproc_t fhaold_get_procnum(rpcproc_t procnum); 51int fhaold_realign(struct mbuf **mb, int malloc_flags); 52int fhaold_get_fh(uint64_t *fh, int v3, struct mbuf **md, caddr_t *dpos); 53int fhaold_is_read(rpcproc_t procnum); 54int fhaold_is_write(rpcproc_t procnum); 55int fhaold_get_offset(struct mbuf **md, caddr_t *dpos, int v3, 56 struct fha_info *info); 57int fhaold_no_offset(rpcproc_t procnum); 58void fhaold_set_locktype(rpcproc_t procnum, struct fha_info *info); 59static int fheold_stats_sysctl(SYSCTL_HANDLER_ARGS); 60 61static struct fha_params fhaold_softc; 62 63SYSCTL_DECL(_vfs_nfsrv); 64 65extern SVCPOOL *nfsrv_pool; 66 67SYSINIT(nfs_fhaold, SI_SUB_ROOT_CONF, SI_ORDER_ANY, fhaold_init, NULL); 68SYSUNINIT(nfs_fhaold, SI_SUB_ROOT_CONF, SI_ORDER_ANY, fhaold_uninit, NULL); 69 70static void 71fhaold_init(void *foo) 72{ 73 struct fha_params *softc; 74 75 softc = &fhaold_softc; 76 77 bzero(softc, sizeof(*softc)); 78 79 /* 80 * Setup the callbacks for this FHA personality. 81 */ 82 softc->callbacks.get_procnum = fhaold_get_procnum; 83 softc->callbacks.realign = fhaold_realign; 84 softc->callbacks.get_fh = fhaold_get_fh; 85 softc->callbacks.is_read = fhaold_is_read; 86 softc->callbacks.is_write = fhaold_is_write; 87 softc->callbacks.get_offset = fhaold_get_offset; 88 softc->callbacks.no_offset = fhaold_no_offset; 89 softc->callbacks.set_locktype = fhaold_set_locktype; 90 softc->callbacks.fhe_stats_sysctl = fheold_stats_sysctl; 91 92 snprintf(softc->server_name, sizeof(softc->server_name), 93 FHAOLD_SERVER_NAME); 94 95 softc->pool = &nfsrv_pool; 96 97 /* 98 * Initialize the sysctl context list for the fha module. 99 */ 100 sysctl_ctx_init(&softc->sysctl_ctx); 101 softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx, 102 SYSCTL_STATIC_CHILDREN(_vfs_nfsrv), OID_AUTO, "fha", CTLFLAG_RD, 103 0, "fha node"); 104 if (softc->sysctl_tree == NULL) { 105 printf("%s: unable to allocate sysctl tree\n", __func__); 106 return; 107 } 108 fha_init(softc); 109} 110 111static void 112fhaold_uninit(void *foo) 113{ 114 struct fha_params *softc; 115 116 softc = &fhaold_softc; 117 118 fha_uninit(softc); 119} 120 121 122rpcproc_t 123fhaold_get_procnum(rpcproc_t procnum) 124{ 125 if (procnum > NFSV2PROC_STATFS) 126 return (-1); 127 128 return (nfsrv_nfsv3_procid[procnum]); 129} 130 131int 132fhaold_realign(struct mbuf **mb, int malloc_flags) 133{ 134 return (nfs_realign(mb, malloc_flags)); 135} 136 137int 138fhaold_get_fh(uint64_t *fh, int v3, struct mbuf **md, caddr_t *dpos) 139{ 140 u_int32_t *tl; 141 uint8_t *buf; 142 uint64_t t; 143 int fhlen, i; 144 145 if (v3) { 146 tl = nfsm_dissect_xx_nonblock(NFSX_UNSIGNED, md, dpos); 147 if (tl == NULL) 148 return EBADRPC; 149 fhlen = fxdr_unsigned(int, *tl); 150 if (fhlen != 0 && fhlen != NFSX_V3FH) 151 return EBADRPC; 152 } else { 153 fhlen = NFSX_V2FH; 154 } 155 t = 0; 156 if (fhlen != 0) { 157 buf = nfsm_dissect_xx_nonblock(fhlen, md, dpos); 158 if (buf == NULL) 159 return EBADRPC; 160 for (i = 0; i < fhlen; i++) 161 t ^= ((uint64_t)buf[i] << (i & 7) * 8); 162 } 163 *fh = t; 164 return 0; 165} 166 167int 168fhaold_is_read(rpcproc_t procnum) 169{ 170 if (procnum == NFSPROC_READ) 171 return (1); 172 else 173 return (0); 174} 175 176int 177fhaold_is_write(rpcproc_t procnum) 178{ 179 if (procnum == NFSPROC_WRITE) 180 return (1); 181 else 182 return (0); 183} 184 185int 186fhaold_get_offset(struct mbuf **md, caddr_t *dpos, int v3, 187 struct fha_info *info) 188{ 189 uint32_t *tl; 190 191 if (v3) { 192 tl = nfsm_dissect_xx_nonblock(2 * NFSX_UNSIGNED, md, dpos); 193 if (tl == NULL) 194 goto out; 195 info->offset = fxdr_hyper(tl); 196 } else { 197 tl = nfsm_dissect_xx_nonblock(NFSX_UNSIGNED, md, dpos); 198 if (tl == NULL) 199 goto out; 200 info->offset = fxdr_unsigned(uint32_t, *tl); 201 } 202 203 return (0); 204out: 205 return (-1); 206} 207 208int 209fhaold_no_offset(rpcproc_t procnum) 210{ 211 if (procnum == NFSPROC_FSSTAT || 212 procnum == NFSPROC_FSINFO || 213 procnum == NFSPROC_PATHCONF || 214 procnum == NFSPROC_NOOP || 215 procnum == NFSPROC_NULL) 216 return (1); 217 else 218 return (0); 219} 220 221void 222fhaold_set_locktype(rpcproc_t procnum, struct fha_info *info) 223{ 224 switch (procnum) { 225 case NFSPROC_NULL: 226 case NFSPROC_GETATTR: 227 case NFSPROC_LOOKUP: 228 case NFSPROC_ACCESS: 229 case NFSPROC_READLINK: 230 case NFSPROC_READ: 231 case NFSPROC_READDIR: 232 case NFSPROC_READDIRPLUS: 233 case NFSPROC_WRITE: 234 info->locktype = LK_SHARED; 235 break; 236 case NFSPROC_SETATTR: 237 case NFSPROC_CREATE: 238 case NFSPROC_MKDIR: 239 case NFSPROC_SYMLINK: 240 case NFSPROC_MKNOD: 241 case NFSPROC_REMOVE: 242 case NFSPROC_RMDIR: 243 case NFSPROC_RENAME: 244 case NFSPROC_LINK: 245 case NFSPROC_FSSTAT: 246 case NFSPROC_FSINFO: 247 case NFSPROC_PATHCONF: 248 case NFSPROC_COMMIT: 249 case NFSPROC_NOOP: 250 info->locktype = LK_EXCLUSIVE; 251 break; 252 } 253} 254 255static int 256fheold_stats_sysctl(SYSCTL_HANDLER_ARGS) 257{ 258 return (fhe_stats_sysctl(oidp, arg1, arg2, req, &fhaold_softc)); 259} 260 261SVCTHREAD * 262fhaold_assign(SVCTHREAD *this_thread, struct svc_req *req) 263{ 264 return (fha_assign(this_thread, req, &fhaold_softc)); 265} 266