nwfs_vfsops.c revision 137479
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: head/sys/fs/nwfs/nwfs_vfsops.c 137479 2004-11-09 22:21:10Z 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 61int nwfs_debuglevel = 0; 62 63static int nwfs_version = NWFS_VERSION; 64 65SYSCTL_DECL(_vfs_nwfs); 66SYSCTL_NODE(_vfs, OID_AUTO, nwfs, CTLFLAG_RW, 0, "Netware filesystem"); 67SYSCTL_INT(_vfs_nwfs, OID_AUTO, version, CTLFLAG_RD, &nwfs_version, 0, ""); 68SYSCTL_INT(_vfs_nwfs, OID_AUTO, debuglevel, CTLFLAG_RW, &nwfs_debuglevel, 0, ""); 69 70MODULE_DEPEND(nwfs, ncp, 1, 1, 1); 71MODULE_DEPEND(nwfs, libmchain, 1, 1, 1); 72 73static vfs_omount_t nwfs_omount; 74static vfs_quotactl_t nwfs_quotactl; 75static vfs_root_t nwfs_root; 76static vfs_start_t nwfs_start; 77static vfs_statfs_t nwfs_statfs; 78static vfs_unmount_t nwfs_unmount; 79static vfs_init_t nwfs_init; 80static vfs_uninit_t nwfs_uninit; 81 82static struct vfsops nwfs_vfsops = { 83 .vfs_init = nwfs_init, 84 .vfs_omount = nwfs_omount, 85 .vfs_quotactl = nwfs_quotactl, 86 .vfs_root = nwfs_root, 87 .vfs_start = nwfs_start, 88 .vfs_statfs = nwfs_statfs, 89 .vfs_sync = vfs_stdsync, 90 .vfs_uninit = nwfs_uninit, 91 .vfs_unmount = nwfs_unmount, 92}; 93 94 95VFS_SET(nwfs_vfsops, nwfs, VFCF_NETWORK); 96 97int nwfs_pbuf_freecnt = -1; /* start out unlimited */ 98static int nwfsid = 1; 99 100static int 101nwfs_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 * mp - path - addr in user space of mount point (ie /usr or whatever) 137 * data - addr in user space of mount params 138 */ 139static int nwfs_omount(struct mount *mp, char *path, caddr_t data, 140 struct thread *td) 141{ 142 struct nwfs_args args; /* will hold data from mount request */ 143 int error; 144 struct nwmount *nmp = NULL; 145 struct ncp_conn *conn = NULL; 146 struct ncp_handle *handle = NULL; 147 struct vnode *vp; 148 char *pc,*pe; 149 150 if (mp->mnt_flag & MNT_ROOTFS) 151 return (EOPNOTSUPP); 152 if (data == NULL) { 153 nwfs_printf("missing data argument\n"); 154 return 1; 155 } 156 if (mp->mnt_flag & MNT_UPDATE) { 157 nwfs_printf("MNT_UPDATE not implemented"); 158 return (EOPNOTSUPP); 159 } 160 error = copyin(data, (caddr_t)&args, sizeof(struct nwfs_args)); 161 if (error) 162 return (error); 163 if (args.version != NWFS_VERSION) { 164 nwfs_printf("mount version mismatch: kernel=%d, mount=%d\n",NWFS_VERSION,args.version); 165 return (1); 166 } 167 error = ncp_conn_getbyref(args.connRef, td , td->td_ucred,NCPM_EXECUTE,&conn); 168 if (error) { 169 nwfs_printf("invalid connection refernce %d\n",args.connRef); 170 return (error); 171 } 172 error = ncp_conn_gethandle(conn, NULL, &handle); 173 if (error) { 174 nwfs_printf("can't get connection handle\n"); 175 return (error); 176 } 177 ncp_conn_unlock(conn, td); /* we keep the ref */ 178 mp->mnt_stat.f_iosize = conn->buffer_size; 179 /* We must malloc our own mount info */ 180 MALLOC(nmp,struct nwmount *,sizeof(struct nwmount),M_NWFSDATA, 181 M_WAITOK | M_USE_RESERVE | M_ZERO); 182 if (nmp == NULL) { 183 nwfs_printf("could not alloc nwmount\n"); 184 error = ENOMEM; 185 goto bad; 186 } 187 mp->mnt_data = (qaddr_t)nmp; 188 nmp->connh = handle; 189 nmp->n_root = NULL; 190 nmp->n_id = nwfsid++; 191 nmp->m = args; 192 nmp->m.file_mode = (nmp->m.file_mode & 193 (S_IRWXU|S_IRWXG|S_IRWXO)) | S_IFREG; 194 nmp->m.dir_mode = (nmp->m.dir_mode & 195 (S_IRWXU|S_IRWXG|S_IRWXO)) | S_IFDIR; 196 if ((error = nwfs_initnls(nmp)) != 0) goto bad; 197 pc = mp->mnt_stat.f_mntfromname; 198 pe = pc+sizeof(mp->mnt_stat.f_mntfromname); 199 bzero(pc, MNAMELEN); 200 *(pc++) = '/'; 201 pc = index(strncpy(pc, conn->li.server, pe-pc-2),0); 202 if (pc < pe-1) { 203 *(pc++) = ':'; 204 pc=index(strncpy(pc, conn->li.user, pe-pc-2),0); 205 if (pc < pe-1) { 206 *(pc++) = '/'; 207 strncpy(pc, nmp->m.mounted_vol, pe-pc-2); 208 } 209 } 210 /* protect against invalid mount points */ 211 nmp->m.mount_point[sizeof(nmp->m.mount_point)-1] = '\0'; 212 vfs_getnewfsid(mp); 213 error = nwfs_root(mp, &vp, td); 214 if (error) 215 goto bad; 216 /* 217 * Lose the lock but keep the ref. 218 */ 219 VOP_UNLOCK(vp, 0, curthread); 220 NCPVODEBUG("rootvp.vrefcnt=%d\n",vrefcnt(vp)); 221 return error; 222bad: 223 if (nmp) 224 free(nmp, M_NWFSDATA); 225 if (handle) 226 ncp_conn_puthandle(handle, NULL, 0); 227 return error; 228} 229 230/* Unmount the filesystem described by mp. */ 231static int 232nwfs_unmount(struct mount *mp, int mntflags, struct thread *td) 233{ 234 struct nwmount *nmp = VFSTONWFS(mp); 235 struct ncp_conn *conn; 236 int error, flags; 237 238 NCPVODEBUG("nwfs_unmount: flags=%04x\n",mntflags); 239 flags = 0; 240 if (mntflags & MNT_FORCE) 241 flags |= FORCECLOSE; 242 /* There is 1 extra root vnode reference from nwfs_mount(). */ 243 error = vflush(mp, 1, flags, td); 244 if (error) 245 return (error); 246 conn = NWFSTOCONN(nmp); 247 ncp_conn_puthandle(nmp->connh,NULL,0); 248 if (ncp_conn_lock(conn, td, td->td_ucred,NCPM_WRITE | NCPM_EXECUTE) == 0) { 249 if(ncp_conn_free(conn)) 250 ncp_conn_unlock(conn, td); 251 } 252 mp->mnt_data = (qaddr_t)0; 253 if (nmp->m.flags & NWFS_MOUNT_HAVE_NLS) 254 free(nmp->m.nls.to_lower, M_NWFSDATA); 255 free(nmp, M_NWFSDATA); 256 mp->mnt_flag &= ~MNT_LOCAL; 257 return (error); 258} 259 260/* Return locked vnode to root of a filesystem */ 261static int 262nwfs_root(struct mount *mp, struct vnode **vpp, struct thread *td) { 263 struct vnode *vp; 264 struct nwmount *nmp; 265 struct nwnode *np; 266 struct ncp_conn *conn; 267 struct nw_entry_info fattr; 268 struct ucred *cred = td->td_ucred; 269 int error, nsf, opt; 270 u_char vol; 271 272 nmp = VFSTONWFS(mp); 273 conn = NWFSTOCONN(nmp); 274 if (nmp->n_root) { 275 *vpp = NWTOV(nmp->n_root); 276 while (vget(*vpp, LK_EXCLUSIVE, curthread) != 0) 277 ; 278 return 0; 279 } 280 error = ncp_lookup_volume(conn, nmp->m.mounted_vol, &vol, 281 &nmp->n_rootent.f_id, td, cred); 282 if (error) 283 return ENOENT; 284 nmp->n_volume = vol; 285 error = ncp_get_namespaces(conn, vol, &nsf, td, cred); 286 if (error) 287 return ENOENT; 288 if (nsf & NW_NSB_OS2) { 289 NCPVODEBUG("volume %s has os2 namespace\n",nmp->m.mounted_vol); 290 if ((nmp->m.flags & NWFS_MOUNT_NO_OS2) == 0) { 291 nmp->name_space = NW_NS_OS2; 292 nmp->m.nls.opt &= ~NWHP_DOS; 293 } 294 } 295 opt = nmp->m.nls.opt; 296 nsf = opt & (NWHP_UPPER | NWHP_LOWER); 297 if (opt & NWHP_DOS) { 298 if (nsf == (NWHP_UPPER | NWHP_LOWER)) { 299 nmp->m.nls.opt &= ~(NWHP_LOWER | NWHP_UPPER); 300 } else if (nsf == 0) { 301 nmp->m.nls.opt |= NWHP_LOWER; 302 } 303 } else { 304 if (nsf == (NWHP_UPPER | NWHP_LOWER)) { 305 nmp->m.nls.opt &= ~(NWHP_LOWER | NWHP_UPPER); 306 } 307 } 308 if (nmp->m.root_path[0]) { 309 nmp->m.root_path[0]--; 310 error = ncp_obtain_info(nmp, nmp->n_rootent.f_id, 311 -nmp->m.root_path[0], nmp->m.root_path, &fattr, td, cred); 312 if (error) { 313 NCPFATAL("Invalid root path specified\n"); 314 return ENOENT; 315 } 316 nmp->n_rootent.f_parent = fattr.dirEntNum; 317 nmp->m.root_path[0]++; 318 error = ncp_obtain_info(nmp, nmp->n_rootent.f_id, 319 -nmp->m.root_path[0], nmp->m.root_path, &fattr, td, cred); 320 if (error) { 321 NCPFATAL("Invalid root path specified\n"); 322 return ENOENT; 323 } 324 nmp->n_rootent.f_id = fattr.dirEntNum; 325 } else { 326 error = ncp_obtain_info(nmp, nmp->n_rootent.f_id, 327 0, NULL, &fattr, td, cred); 328 if (error) { 329 NCPFATAL("Can't obtain volume info\n"); 330 return ENOENT; 331 } 332 fattr.nameLen = strlen(strcpy(fattr.entryName, "#.ROOT")); 333 nmp->n_rootent.f_parent = nmp->n_rootent.f_id; 334 } 335 error = nwfs_nget(mp, nmp->n_rootent, &fattr, NULL, &vp); 336 if (error) 337 return (error); 338 vp->v_vflag |= VV_ROOT; 339 np = VTONW(vp); 340 if (nmp->m.root_path[0] == 0) 341 np->n_flag |= NVOLUME; 342 nmp->n_root = np; 343/* error = VOP_GETATTR(vp, &vattr, cred, td); 344 if (error) { 345 vput(vp); 346 NCPFATAL("Can't get root directory entry\n"); 347 return error; 348 }*/ 349 *vpp = vp; 350 return (0); 351} 352 353/* 354 * Vfs start routine, a no-op. 355 */ 356/* ARGSUSED */ 357static int 358nwfs_start(mp, flags, td) 359 struct mount *mp; 360 int flags; 361 struct thread *td; 362{ 363 NCPVODEBUG("flags=%04x\n",flags); 364 return (0); 365} 366 367/* 368 * Do operations associated with quotas, not supported 369 */ 370/* ARGSUSED */ 371static int 372nwfs_quotactl(mp, cmd, uid, arg, td) 373 struct mount *mp; 374 int cmd; 375 uid_t uid; 376 caddr_t arg; 377 struct thread *td; 378{ 379 NCPVODEBUG("return EOPNOTSUPP\n"); 380 return (EOPNOTSUPP); 381} 382 383/*ARGSUSED*/ 384int 385nwfs_init(struct vfsconf *vfsp) 386{ 387 nwfs_hash_init(); 388 nwfs_pbuf_freecnt = nswbuf / 2 + 1; 389 NCPVODEBUG("always happy to load!\n"); 390 return (0); 391} 392 393/*ARGSUSED*/ 394int 395nwfs_uninit(struct vfsconf *vfsp) 396{ 397 398 nwfs_hash_free(); 399 NCPVODEBUG("unloaded\n"); 400 return (0); 401} 402 403/* 404 * nwfs_statfs call 405 */ 406int 407nwfs_statfs(mp, sbp, td) 408 struct mount *mp; 409 struct statfs *sbp; 410 struct thread *td; 411{ 412 struct nwmount *nmp = VFSTONWFS(mp); 413 int error = 0, secsize; 414 struct nwnode *np = nmp->n_root; 415 struct ncp_volume_info vi; 416 417 if (np == NULL) return EINVAL; 418 error = ncp_get_volume_info_with_number(NWFSTOCONN(nmp), 419 nmp->n_volume, &vi, td, td->td_ucred); 420 if (error) return error; 421 secsize = 512; /* XXX how to get real value ??? */ 422 /* fundamental filesystem block size */ 423 sbp->f_bsize = vi.sectors_per_block*secsize; 424 /* optimal transfer block size */ 425 sbp->f_iosize = NWFSTOCONN(nmp)->buffer_size; 426 /* total data blocks in filesystem */ 427 sbp->f_blocks= vi.total_blocks; 428 /* free blocks in fs */ 429 sbp->f_bfree = vi.free_blocks + vi.purgeable_blocks; 430 /* free blocks avail to non-superuser */ 431 sbp->f_bavail= vi.free_blocks+vi.purgeable_blocks; 432 /* total file nodes in filesystem */ 433 sbp->f_files = vi.total_dir_entries; 434 /* free file nodes in fs */ 435 sbp->f_ffree = vi.available_dir_entries; 436 sbp->f_flags = 0; /* copy of mount exported flags */ 437 if (sbp != &mp->mnt_stat) { 438 sbp->f_fsid = mp->mnt_stat.f_fsid; /* filesystem id */ 439 sbp->f_owner = mp->mnt_stat.f_owner; /* user that mounted the filesystem */ 440 sbp->f_type = mp->mnt_vfc->vfc_typenum; /* type of filesystem */ 441 bcopy(mp->mnt_stat.f_mntonname, sbp->f_mntonname, MNAMELEN); 442 bcopy(mp->mnt_stat.f_mntfromname, sbp->f_mntfromname, MNAMELEN); 443 } 444 strncpy(sbp->f_fstypename, mp->mnt_vfc->vfc_name, MFSNAMELEN); 445 return 0; 446} 447