Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/fs/nwfs/nwfs_vfsops.c
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1 /*- 2 * Copyright (c) 1999, 2000 Boris Popov 3 * All rights reserved. 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 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by Boris Popov. 16 * 4. Neither the name of the author nor the names of any co-contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * $FreeBSD: releng/6.0/sys/fs/nwfs/nwfs_vfsops.c 150786 2005-10-01 17:39:50Z phk $ 33 */ 34 #include "opt_ncp.h" 35 #ifndef NCP 36 #error "NWFS requires NCP protocol" 37 #endif 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/proc.h> 42 #include <sys/kernel.h> 43 #include <sys/sysctl.h> 44 #include <sys/vnode.h> 45 #include <sys/mount.h> 46 #include <sys/stat.h> 47 #include <sys/malloc.h> 48 #include <sys/bio.h> 49 #include <sys/buf.h> 50 51 #include <netncp/ncp.h> 52 #include <netncp/ncp_conn.h> 53 #include <netncp/ncp_subr.h> 54 #include <netncp/ncp_ncp.h> 55 #include <netncp/ncp_nls.h> 56 57 #include <fs/nwfs/nwfs.h> 58 #include <fs/nwfs/nwfs_node.h> 59 #include <fs/nwfs/nwfs_subr.h> 60 61 int nwfs_debuglevel = 0; 62 63 static int nwfs_version = NWFS_VERSION; 64 65 SYSCTL_DECL(_vfs_nwfs); 66 SYSCTL_NODE(_vfs, OID_AUTO, nwfs, CTLFLAG_RW, 0, "Netware filesystem"); 67 SYSCTL_INT(_vfs_nwfs, OID_AUTO, version, CTLFLAG_RD, &nwfs_version, 0, ""); 68 SYSCTL_INT(_vfs_nwfs, OID_AUTO, debuglevel, CTLFLAG_RW, &nwfs_debuglevel, 0, ""); 69 70 MODULE_DEPEND(nwfs, ncp, 1, 1, 1); 71 MODULE_DEPEND(nwfs, libmchain, 1, 1, 1); 72 73 static vfs_cmount_t nwfs_cmount; 74 static vfs_mount_t nwfs_mount; 75 static vfs_quotactl_t nwfs_quotactl; 76 static vfs_root_t nwfs_root; 77 static vfs_statfs_t nwfs_statfs; 78 static vfs_unmount_t nwfs_unmount; 79 static vfs_init_t nwfs_init; 80 static vfs_uninit_t nwfs_uninit; 81 82 static struct vfsops nwfs_vfsops = { 83 .vfs_init = nwfs_init, 84 .vfs_mount = nwfs_mount, 85 .vfs_cmount = nwfs_cmount, 86 .vfs_quotactl = nwfs_quotactl, 87 .vfs_root = nwfs_root, 88 .vfs_statfs = nwfs_statfs, 89 .vfs_sync = vfs_stdsync, 90 .vfs_uninit = nwfs_uninit, 91 .vfs_unmount = nwfs_unmount, 92 }; 93 94 95 VFS_SET(nwfs_vfsops, nwfs, VFCF_NETWORK); 96 97 int nwfs_pbuf_freecnt = -1; /* start out unlimited */ 98 static int nwfsid = 1; 99 100 static int 101 nwfs_initnls(struct nwmount *nmp) { 102 char *pc, *pe; 103 int error = 0; 104 #define COPY_TABLE(t,d) { \ 105 if (t) { \ 106 error = copyin((t), pc, 256); \ 107 if (error) break; \ 108 } else \ 109 bcopy(d, pc, 256); \ 110 (t) = pc; pc += 256; \ 111 } 112 113 nmp->m.nls.opt |= NWHP_NLS | NWHP_DOS; 114 if ((nmp->m.flags & NWFS_MOUNT_HAVE_NLS) == 0) { 115 nmp->m.nls.to_lower = ncp_defnls.to_lower; 116 nmp->m.nls.to_upper = ncp_defnls.to_upper; 117 nmp->m.nls.n2u = ncp_defnls.n2u; 118 nmp->m.nls.u2n = ncp_defnls.u2n; 119 return 0; 120 } 121 MALLOC(pe, char *, 256 * 4, M_NWFSDATA, M_WAITOK); 122 pc = pe; 123 do { 124 COPY_TABLE(nmp->m.nls.to_lower, ncp_defnls.to_lower); 125 COPY_TABLE(nmp->m.nls.to_upper, ncp_defnls.to_upper); 126 COPY_TABLE(nmp->m.nls.n2u, ncp_defnls.n2u); 127 COPY_TABLE(nmp->m.nls.u2n, ncp_defnls.u2n); 128 } while(0); 129 if (error) { 130 free(pe, M_NWFSDATA); 131 return error; 132 } 133 return 0; 134 } 135 136 static int nwfs_cmount(struct mntarg *ma, void *data, int flags, 137 struct thread *td) 138 { 139 struct nwfs_args args; /* will hold data from mount request */ 140 int error; 141 142 error = copyin(data, (caddr_t)&args, sizeof(struct nwfs_args)); 143 if (error) 144 return (error); 145 146 /* 147 * XXX: cheap cop-out here, args contains a structure I don't 148 * XXX: know how we should handle, and I don't see any immediate 149 * XXX: prospect of avoiding a mount_nwfs(8) binary anyway. 150 */ 151 ma = mount_arg(ma, "nwfs_args", &args, sizeof args); 152 153 error = kernel_mount(ma, flags); 154 155 return (error); 156 } 157 158 /* 159 * mp - path - addr in user space of mount point (ie /usr or whatever) 160 * data - addr in user space of mount params 161 */ 162 static int nwfs_mount(struct mount *mp, struct thread *td) 163 { 164 struct nwfs_args args; /* will hold data from mount request */ 165 int error; 166 struct nwmount *nmp = NULL; 167 struct ncp_conn *conn = NULL; 168 struct ncp_handle *handle = NULL; 169 struct vnode *vp; 170 char *pc,*pe; 171 172 if (mp->mnt_flag & MNT_ROOTFS) 173 return (EOPNOTSUPP); 174 if (mp->mnt_flag & MNT_UPDATE) { 175 nwfs_printf("MNT_UPDATE not implemented"); 176 return (EOPNOTSUPP); 177 } 178 error = vfs_copyopt(mp->mnt_optnew, "nwfs_args", &args, sizeof args); 179 if (error) 180 return (error); 181 if (args.version != NWFS_VERSION) { 182 nwfs_printf("mount version mismatch: kernel=%d, mount=%d\n",NWFS_VERSION,args.version); 183 return (1); 184 } 185 error = ncp_conn_getbyref(args.connRef, td , td->td_ucred,NCPM_EXECUTE,&conn); 186 if (error) { 187 nwfs_printf("invalid connection refernce %d\n",args.connRef); 188 return (error); 189 } 190 error = ncp_conn_gethandle(conn, NULL, &handle); 191 if (error) { 192 nwfs_printf("can't get connection handle\n"); 193 return (error); 194 } 195 ncp_conn_unlock(conn, td); /* we keep the ref */ 196 mp->mnt_stat.f_iosize = conn->buffer_size; 197 /* We must malloc our own mount info */ 198 MALLOC(nmp,struct nwmount *,sizeof(struct nwmount),M_NWFSDATA, 199 M_WAITOK | M_USE_RESERVE | M_ZERO); 200 if (nmp == NULL) { 201 nwfs_printf("could not alloc nwmount\n"); 202 error = ENOMEM; 203 goto bad; 204 } 205 mp->mnt_data = (qaddr_t)nmp; 206 nmp->connh = handle; 207 nmp->n_root = NULL; 208 nmp->n_id = nwfsid++; 209 nmp->m = args; 210 nmp->m.file_mode = (nmp->m.file_mode & 211 (S_IRWXU|S_IRWXG|S_IRWXO)) | S_IFREG; 212 nmp->m.dir_mode = (nmp->m.dir_mode & 213 (S_IRWXU|S_IRWXG|S_IRWXO)) | S_IFDIR; 214 if ((error = nwfs_initnls(nmp)) != 0) goto bad; 215 pc = mp->mnt_stat.f_mntfromname; 216 pe = pc+sizeof(mp->mnt_stat.f_mntfromname); 217 bzero(pc, MNAMELEN); 218 *(pc++) = '/'; 219 pc = index(strncpy(pc, conn->li.server, pe-pc-2),0); 220 if (pc < pe-1) { 221 *(pc++) = ':'; 222 pc=index(strncpy(pc, conn->li.user, pe-pc-2),0); 223 if (pc < pe-1) { 224 *(pc++) = '/'; 225 strncpy(pc, nmp->m.mounted_vol, pe-pc-2); 226 } 227 } 228 /* protect against invalid mount points */ 229 nmp->m.mount_point[sizeof(nmp->m.mount_point)-1] = '\0'; 230 vfs_getnewfsid(mp); 231 error = nwfs_root(mp, LK_EXCLUSIVE, &vp, td); 232 if (error) 233 goto bad; 234 /* 235 * Lose the lock but keep the ref. 236 */ 237 VOP_UNLOCK(vp, 0, curthread); 238 NCPVODEBUG("rootvp.vrefcnt=%d\n",vrefcnt(vp)); 239 return error; 240 bad: 241 if (nmp) 242 free(nmp, M_NWFSDATA); 243 if (handle) 244 ncp_conn_puthandle(handle, NULL, 0); 245 return error; 246 } 247 248 /* Unmount the filesystem described by mp. */ 249 static int 250 nwfs_unmount(struct mount *mp, int mntflags, struct thread *td) 251 { 252 struct nwmount *nmp = VFSTONWFS(mp); 253 struct ncp_conn *conn; 254 int error, flags; 255 256 NCPVODEBUG("nwfs_unmount: flags=%04x\n",mntflags); 257 flags = 0; 258 if (mntflags & MNT_FORCE) 259 flags |= FORCECLOSE; 260 /* There is 1 extra root vnode reference from nwfs_mount(). */ 261 error = vflush(mp, 1, flags, td); 262 if (error) 263 return (error); 264 conn = NWFSTOCONN(nmp); 265 ncp_conn_puthandle(nmp->connh,NULL,0); 266 if (ncp_conn_lock(conn, td, td->td_ucred,NCPM_WRITE | NCPM_EXECUTE) == 0) { 267 if(ncp_conn_free(conn)) 268 ncp_conn_unlock(conn, td); 269 } 270 mp->mnt_data = (qaddr_t)0; 271 if (nmp->m.flags & NWFS_MOUNT_HAVE_NLS) 272 free(nmp->m.nls.to_lower, M_NWFSDATA); 273 free(nmp, M_NWFSDATA); 274 mp->mnt_flag &= ~MNT_LOCAL; 275 return (error); 276 } 277 278 /* Return locked vnode to root of a filesystem */ 279 static int 280 nwfs_root(struct mount *mp, int flags, struct vnode **vpp, struct thread *td) { 281 struct vnode *vp; 282 struct nwmount *nmp; 283 struct nwnode *np; 284 struct ncp_conn *conn; 285 struct nw_entry_info fattr; 286 struct ucred *cred = td->td_ucred; 287 int error, nsf, opt; 288 u_char vol; 289 290 nmp = VFSTONWFS(mp); 291 conn = NWFSTOCONN(nmp); 292 if (nmp->n_root) { 293 *vpp = NWTOV(nmp->n_root); 294 while (vget(*vpp, LK_EXCLUSIVE, curthread) != 0) 295 ; 296 return 0; 297 } 298 error = ncp_lookup_volume(conn, nmp->m.mounted_vol, &vol, 299 &nmp->n_rootent.f_id, td, cred); 300 if (error) 301 return ENOENT; 302 nmp->n_volume = vol; 303 error = ncp_get_namespaces(conn, vol, &nsf, td, cred); 304 if (error) 305 return ENOENT; 306 if (nsf & NW_NSB_OS2) { 307 NCPVODEBUG("volume %s has os2 namespace\n",nmp->m.mounted_vol); 308 if ((nmp->m.flags & NWFS_MOUNT_NO_OS2) == 0) { 309 nmp->name_space = NW_NS_OS2; 310 nmp->m.nls.opt &= ~NWHP_DOS; 311 } 312 } 313 opt = nmp->m.nls.opt; 314 nsf = opt & (NWHP_UPPER | NWHP_LOWER); 315 if (opt & NWHP_DOS) { 316 if (nsf == (NWHP_UPPER | NWHP_LOWER)) { 317 nmp->m.nls.opt &= ~(NWHP_LOWER | NWHP_UPPER); 318 } else if (nsf == 0) { 319 nmp->m.nls.opt |= NWHP_LOWER; 320 } 321 } else { 322 if (nsf == (NWHP_UPPER | NWHP_LOWER)) { 323 nmp->m.nls.opt &= ~(NWHP_LOWER | NWHP_UPPER); 324 } 325 } 326 if (nmp->m.root_path[0]) { 327 nmp->m.root_path[0]--; 328 error = ncp_obtain_info(nmp, nmp->n_rootent.f_id, 329 -nmp->m.root_path[0], nmp->m.root_path, &fattr, td, cred); 330 if (error) { 331 NCPFATAL("Invalid root path specified\n"); 332 return ENOENT; 333 } 334 nmp->n_rootent.f_parent = fattr.dirEntNum; 335 nmp->m.root_path[0]++; 336 error = ncp_obtain_info(nmp, nmp->n_rootent.f_id, 337 -nmp->m.root_path[0], nmp->m.root_path, &fattr, td, cred); 338 if (error) { 339 NCPFATAL("Invalid root path specified\n"); 340 return ENOENT; 341 } 342 nmp->n_rootent.f_id = fattr.dirEntNum; 343 } else { 344 error = ncp_obtain_info(nmp, nmp->n_rootent.f_id, 345 0, NULL, &fattr, td, cred); 346 if (error) { 347 NCPFATAL("Can't obtain volume info\n"); 348 return ENOENT; 349 } 350 fattr.nameLen = strlen(strcpy(fattr.entryName, "#.ROOT")); 351 nmp->n_rootent.f_parent = nmp->n_rootent.f_id; 352 } 353 error = nwfs_nget(mp, nmp->n_rootent, &fattr, NULL, &vp); 354 if (error) 355 return (error); 356 vp->v_vflag |= VV_ROOT; 357 np = VTONW(vp); 358 if (nmp->m.root_path[0] == 0) 359 np->n_flag |= NVOLUME; 360 nmp->n_root = np; 361 /* error = VOP_GETATTR(vp, &vattr, cred, td); 362 if (error) { 363 vput(vp); 364 NCPFATAL("Can't get root directory entry\n"); 365 return error; 366 }*/ 367 *vpp = vp; 368 return (0); 369 } 370 371 /* 372 * Do operations associated with quotas, not supported 373 */ 374 /* ARGSUSED */ 375 static int 376 nwfs_quotactl(mp, cmd, uid, arg, td) 377 struct mount *mp; 378 int cmd; 379 uid_t uid; 380 caddr_t arg; 381 struct thread *td; 382 { 383 NCPVODEBUG("return EOPNOTSUPP\n"); 384 return (EOPNOTSUPP); 385 } 386 387 /*ARGSUSED*/ 388 int 389 nwfs_init(struct vfsconf *vfsp) 390 { 391 nwfs_hash_init(); 392 nwfs_pbuf_freecnt = nswbuf / 2 + 1; 393 NCPVODEBUG("always happy to load!\n"); 394 return (0); 395 } 396 397 /*ARGSUSED*/ 398 int 399 nwfs_uninit(struct vfsconf *vfsp) 400 { 401 402 nwfs_hash_free(); 403 NCPVODEBUG("unloaded\n"); 404 return (0); 405 } 406 407 /* 408 * nwfs_statfs call 409 */ 410 int 411 nwfs_statfs(mp, sbp, td) 412 struct mount *mp; 413 struct statfs *sbp; 414 struct thread *td; 415 { 416 struct nwmount *nmp = VFSTONWFS(mp); 417 int error = 0, secsize; 418 struct nwnode *np = nmp->n_root; 419 struct ncp_volume_info vi; 420 421 if (np == NULL) return EINVAL; 422 error = ncp_get_volume_info_with_number(NWFSTOCONN(nmp), 423 nmp->n_volume, &vi, td, td->td_ucred); 424 if (error) return error; 425 secsize = 512; /* XXX how to get real value ??? */ 426 /* fundamental filesystem block size */ 427 sbp->f_bsize = vi.sectors_per_block*secsize; 428 /* optimal transfer block size */ 429 sbp->f_iosize = NWFSTOCONN(nmp)->buffer_size; 430 /* total data blocks in filesystem */ 431 sbp->f_blocks= vi.total_blocks; 432 /* free blocks in fs */ 433 sbp->f_bfree = vi.free_blocks + vi.purgeable_blocks; 434 /* free blocks avail to non-superuser */ 435 sbp->f_bavail= vi.free_blocks+vi.purgeable_blocks; 436 /* total file nodes in filesystem */ 437 sbp->f_files = vi.total_dir_entries; 438 /* free file nodes in fs */ 439 sbp->f_ffree = vi.available_dir_entries; 440 sbp->f_flags = 0; /* copy of mount exported flags */ 441 return 0; 442 }
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