2 * Copyright (c) 2000-2001, Boris Popov
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
32 * $FreeBSD: src/sys/fs/smbfs/smbfs_vfsops.c,v 1.2.2.5 2003/01/17 08:20:26 tjr Exp $
33 * $DragonFly: src/sys/vfs/smbfs/smbfs_vfsops.c,v 1.18 2005/02/12 01:32:49 joerg Exp $
35 #include "opt_netsmb.h"
37 #error "SMBFS requires option NETSMB"
40 #include <sys/param.h>
41 #include <sys/systm.h>
43 #include <sys/kernel.h>
44 #include <sys/sysctl.h>
45 #include <sys/vnode.h>
46 #include <sys/mount.h>
48 #include <sys/malloc.h>
49 #include <sys/module.h>
52 #include <netproto/smb/smb.h>
53 #include <netproto/smb/smb_conn.h>
54 #include <netproto/smb/smb_subr.h>
55 #include <netproto/smb/smb_dev.h>
58 #include "smbfs_node.h"
59 #include "smbfs_subr.h"
63 extern struct vnodeopv_entry_desc smbfs_vnodeop_entries[];
65 int smbfs_debuglevel = 0;
67 static int smbfs_version = SMBFS_VERSION;
71 #include <vm/vm_extern.h>
72 #include <vm/vm_zone.h>
74 vm_zone_t smbfsmount_zone;
77 SYSCTL_NODE(_vfs, OID_AUTO, smbfs, CTLFLAG_RW, 0, "SMB/CIFS file system");
78 SYSCTL_INT(_vfs_smbfs, OID_AUTO, version, CTLFLAG_RD, &smbfs_version, 0, "");
79 SYSCTL_INT(_vfs_smbfs, OID_AUTO, debuglevel, CTLFLAG_RW, &smbfs_debuglevel, 0, "");
81 static MALLOC_DEFINE(M_SMBFSHASH, "SMBFS hash", "SMBFS hash table");
84 static int smbfs_mount(struct mount *, char *, caddr_t, struct thread *);
85 static int smbfs_quotactl(struct mount *, int, uid_t, caddr_t, struct thread *);
86 static int smbfs_root(struct mount *, struct vnode **);
87 static int smbfs_start(struct mount *, int, struct thread *);
88 static int smbfs_statfs(struct mount *, struct statfs *, struct thread *);
89 static int smbfs_sync(struct mount *, int, struct thread *);
90 static int smbfs_unmount(struct mount *, int, struct thread *);
91 static int smbfs_init(struct vfsconf *vfsp);
92 static int smbfs_uninit(struct vfsconf *vfsp);
94 #if defined(__FreeBSD__) && __FreeBSD_version < 400009
95 static int smbfs_vget(struct mount *mp, ino_t ino, struct vnode **vpp);
96 static int smbfs_fhtovp(struct mount *, struct fid *,
97 struct sockaddr *, struct vnode **, int *,
99 static int smbfs_vptofh(struct vnode *, struct fid *);
102 static struct vfsops smbfs_vfsops = {
110 #if defined(__DragonFly__) || __FreeBSD_version > 400008
112 vfs_stdfhtovp, /* shouldn't happen */
114 vfs_stdvptofh, /* shouldn't happen */
126 VFS_SET(smbfs_vfsops, smbfs, VFCF_NETWORK);
128 MODULE_DEPEND(smbfs, netsmb, NSMB_VERSION, NSMB_VERSION, NSMB_VERSION);
129 MODULE_DEPEND(smbfs, libiconv, 1, 1, 1);
130 MODULE_DEPEND(smbfs, libmchain, 1, 1, 1);
132 int smbfs_pbuf_freecnt = -1; /* start out unlimited */
135 smbfs_mount(struct mount *mp, char *path, caddr_t data, struct thread *td)
137 struct smbfs_args args; /* will hold data from mount request */
138 struct smbmount *smp = NULL;
140 struct smb_share *ssp = NULL;
142 struct smb_cred scred;
147 KKASSERT(td->td_proc);
148 cred = td->td_proc->p_ucred;
151 printf("missing data argument\n");
154 if (mp->mnt_flag & MNT_UPDATE) {
155 printf("MNT_UPDATE not implemented");
158 error = copyin(data, (caddr_t)&args, sizeof(struct smbfs_args));
161 if (args.version != SMBFS_VERSION) {
162 printf("mount version mismatch: kernel=%d, mount=%d\n",
163 SMBFS_VERSION, args.version);
166 smb_makescred(&scred, td, cred);
167 error = smb_dev2share(args.dev, SMBM_EXEC, &scred, &ssp);
169 printf("invalid device handle %d (%d)\n", args.dev, error);
173 smb_share_unlock(ssp, 0, td);
174 mp->mnt_stat.f_iosize = SSTOVC(ssp)->vc_txmax;
177 smp = zalloc(smbfsmount_zone);
179 MALLOC(smp, struct smbmount*, sizeof(*smp), M_SMBFSDATA, M_WAITOK|M_USE_RESERVE);
182 printf("could not alloc smbmount\n");
186 bzero(smp, sizeof(*smp));
187 mp->mnt_data = (qaddr_t)smp;
188 smp->sm_hash = hashinit(desiredvnodes, M_SMBFSHASH, &smp->sm_hashlen);
189 if (smp->sm_hash == NULL)
191 lockinit(&smp->sm_hashlock, 0, "smbfsh", 0, 0);
195 smp->sm_caseopt = args.caseopt;
196 smp->sm_args.file_mode = (smp->sm_args.file_mode &
197 (S_IRWXU|S_IRWXG|S_IRWXO)) | S_IFREG;
198 smp->sm_args.dir_mode = (smp->sm_args.dir_mode &
199 (S_IRWXU|S_IRWXG|S_IRWXO)) | S_IFDIR;
201 /* simple_lock_init(&smp->sm_npslock);*/
202 pc = mp->mnt_stat.f_mntfromname;
203 pe = pc + sizeof(mp->mnt_stat.f_mntfromname);
207 pc=index(strncpy(pc, vcp->vc_username, pe - pc - 2), 0);
210 pc = index(strncpy(pc, vcp->vc_srvname, pe - pc - 2), 0);
213 strncpy(pc, ssp->ss_name, pe - pc - 2);
216 /* protect against invalid mount points */
217 smp->sm_args.mount_point[sizeof(smp->sm_args.mount_point) - 1] = '\0';
220 vfs_add_vnodeops(mp, &mp->mnt_vn_norm_ops, smbfs_vnodeop_entries);
222 error = smbfs_root(mp, &vp);
225 VOP_UNLOCK(vp, 0, td);
226 SMBVDEBUG("root.v_usecount = %d\n", vp->v_usecount);
229 SMBERROR("mp=%p\n", mp);
235 free(smp->sm_hash, M_SMBFSHASH);
236 lockdestroy(&smp->sm_hashlock);
238 zfree(smbfsmount_zone, smp);
240 free(smp, M_SMBFSDATA);
244 smb_share_put(ssp, &scred);
248 /* Unmount the filesystem described by mp. */
250 smbfs_unmount(struct mount *mp, int mntflags, struct thread *td)
252 struct smbmount *smp = VFSTOSMBFS(mp);
253 struct smb_cred scred;
257 KKASSERT(td->td_proc);
258 cred = td->td_proc->p_ucred;
260 SMBVDEBUG("smbfs_unmount: flags=%04x\n", mntflags);
262 if (mntflags & MNT_FORCE)
265 * Keep trying to flush the vnode list for the mount while
266 * some are still busy and we are making progress towards
267 * making them not busy. This is needed because smbfs vnodes
268 * reference their parent directory but may appear after their
269 * parent in the list; one pass over the vnode list is not
270 * sufficient in this case.
274 /* There is 1 extra root vnode reference from smbfs_mount(). */
275 error = vflush(mp, 1, flags);
276 } while (error == EBUSY && smp->sm_didrele != 0);
279 smb_makescred(&scred, td, cred);
280 smb_share_put(smp->sm_share, &scred);
281 mp->mnt_data = (qaddr_t)0;
284 free(smp->sm_hash, M_SMBFSHASH);
285 lockdestroy(&smp->sm_hashlock);
287 zfree(smbfsmount_zone, smp);
289 free(smp, M_SMBFSDATA);
291 mp->mnt_flag &= ~MNT_LOCAL;
296 * Return locked root vnode of a filesystem
299 smbfs_root(struct mount *mp, struct vnode **vpp)
301 struct thread *td = curthread; /* XXX */
302 struct smbmount *smp = VFSTOSMBFS(mp);
305 struct smbfattr fattr;
307 struct smb_cred scred;
310 KKASSERT(td->td_proc);
311 cred = td->td_proc->p_ucred;
314 SMBERROR("smp == NULL (bug in umount)\n");
318 *vpp = SMBTOV(smp->sm_root);
319 return vget(*vpp, LK_EXCLUSIVE | LK_RETRY, td);
321 smb_makescred(&scred, td, cred);
322 error = smbfs_smb_lookup(NULL, NULL, 0, &fattr, &scred);
325 error = smbfs_nget(mp, NULL, "TheRooT", 7, &fattr, &vp);
336 * Vfs start routine, a no-op.
340 smbfs_start(struct mount *mp, int flags, struct thread *td)
342 SMBVDEBUG("flags=%04x\n", flags);
347 * Do operations associated with quotas, not supported
351 smbfs_quotactl(struct mount *mp, int cmd, uid_t uid, caddr_t arg,
354 SMBVDEBUG("return EOPNOTSUPP\n");
360 smbfs_init(struct vfsconf *vfsp)
363 smbfsmount_zone = zinit("SMBFSMOUNT", sizeof(struct smbmount), 0, 0, 1);
365 smbfs_pbuf_freecnt = nswbuf / 2 + 1;
366 SMBVDEBUG("done.\n");
372 smbfs_uninit(struct vfsconf *vfsp)
374 SMBVDEBUG("done.\n");
382 smbfs_statfs(struct mount *mp, struct statfs *sbp, struct thread *td)
384 struct smbmount *smp = VFSTOSMBFS(mp);
385 struct smbnode *np = smp->sm_root;
386 struct smb_share *ssp = smp->sm_share;
387 struct smb_cred scred;
391 KKASSERT(td->td_proc);
392 cred = td->td_proc->p_ucred;
397 sbp->f_iosize = SSTOVC(ssp)->vc_txmax; /* optimal transfer block size */
398 sbp->f_spare2 = 0; /* placeholder */
399 smb_makescred(&scred, td, cred);
401 if (SMB_DIALECT(SSTOVC(ssp)) >= SMB_DIALECT_LANMAN2_0)
402 error = smbfs_smb_statfs2(ssp, sbp, &scred);
404 error = smbfs_smb_statfs(ssp, sbp, &scred);
407 sbp->f_flags = 0; /* copy of mount exported flags */
408 if (sbp != &mp->mnt_stat) {
409 sbp->f_fsid = mp->mnt_stat.f_fsid; /* file system id */
410 sbp->f_owner = mp->mnt_stat.f_owner; /* user that mounted the filesystem */
411 sbp->f_type = mp->mnt_vfc->vfc_typenum; /* type of filesystem */
412 bcopy(mp->mnt_stat.f_mntfromname, sbp->f_mntfromname, MNAMELEN);
414 strncpy(sbp->f_fstypename, mp->mnt_vfc->vfc_name, MFSNAMELEN);
419 * Flush out the buffer cache
423 smbfs_sync(struct mount *mp, int waitfor, struct thread *td)
426 int error, allerror = 0;
428 * Force stale buffer cache information to be flushed.
431 for (vp = TAILQ_FIRST(&mp->mnt_nvnodelist);
433 vp = TAILQ_NEXT(vp, v_nmntvnodes)) {
434 if (vp->v_flag & VPLACEMARKER) /* ZZZ */
437 * If the vnode that we are about to sync is no longer
438 * associated with this mount point, start over.
440 if (vp->v_mount != mp)
442 if (VOP_ISLOCKED(vp, NULL) || TAILQ_EMPTY(&vp->v_dirtyblkhd) ||
445 if (vget(vp, LK_EXCLUSIVE, td))
447 error = VOP_FSYNC(vp, waitfor, td);
455 #if defined(__FreeBSD__) && __FreeBSD_version < 400009
457 * smbfs flat namespace lookup. Unsupported.
460 static int smbfs_vget(struct mount *mp, ino_t ino, struct vnode **vpp)
466 static int smbfs_fhtovp(struct mount *mp, struct fid *fhp,
467 struct sockaddr *nam, struct vnode **vpp,
468 int *exflagsp, struct ucred **credanonp)
474 * Vnode pointer to File handle, should never happen either
478 smbfs_vptofh(struct vnode *vp, struct fid *fhp)
483 #endif /* __FreeBSD_version < 400009 */