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 1.33 2007/05/06 19:23:35 dillon 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 vop_ops smbfs_vnode_vops;
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 ucred *);
85 static int smbfs_root(struct mount *, struct vnode **);
86 static int smbfs_statfs(struct mount *, struct statfs *, struct ucred *);
87 static int smbfs_sync(struct mount *, int);
88 static int smbfs_unmount(struct mount *, int);
89 static int smbfs_init(struct vfsconf *vfsp);
90 static int smbfs_uninit(struct vfsconf *vfsp);
92 #if defined(__FreeBSD__) && __FreeBSD_version < 400009
93 static int smbfs_vget(struct mount *mp, ino_t ino, struct vnode **vpp);
94 static int smbfs_fhtovp(struct mount *, struct fid *,
95 struct sockaddr *, struct vnode **, int *,
97 static int smbfs_vptofh(struct vnode *, struct fid *);
100 static struct vfsops smbfs_vfsops = {
101 .vfs_mount = smbfs_mount,
102 .vfs_unmount = smbfs_unmount,
103 .vfs_root = smbfs_root,
104 .vfs_statfs = smbfs_statfs,
105 .vfs_sync = smbfs_sync,
106 .vfs_init = smbfs_init,
107 .vfs_uninit = smbfs_uninit
111 VFS_SET(smbfs_vfsops, smbfs, VFCF_NETWORK);
113 MODULE_DEPEND(smbfs, netsmb, NSMB_VERSION, NSMB_VERSION, NSMB_VERSION);
114 MODULE_DEPEND(smbfs, libiconv, 1, 1, 1);
115 MODULE_DEPEND(smbfs, libmchain, 1, 1, 1);
117 int smbfs_pbuf_freecnt = -1; /* start out unlimited */
120 smbfs_mount(struct mount *mp, char *path, caddr_t data, struct ucred *cred)
122 struct smbfs_args args; /* will hold data from mount request */
123 struct smbmount *smp = NULL;
125 struct smb_share *ssp = NULL;
127 struct smb_cred scred;
132 kprintf("missing data argument\n");
135 if (mp->mnt_flag & MNT_UPDATE) {
136 kprintf("MNT_UPDATE not implemented");
139 error = copyin(data, (caddr_t)&args, sizeof(struct smbfs_args));
142 if (args.version != SMBFS_VERSION) {
143 kprintf("mount version mismatch: kernel=%d, mount=%d\n",
144 SMBFS_VERSION, args.version);
147 smb_makescred(&scred, curthread, cred);
148 error = smb_dev2share(args.dev, SMBM_EXEC, &scred, &ssp);
150 kprintf("invalid device handle %d (%d)\n", args.dev, error);
154 smb_share_unlock(ssp, 0);
155 mp->mnt_stat.f_iosize = SSTOVC(ssp)->vc_txmax;
158 smp = zalloc(smbfsmount_zone);
160 MALLOC(smp, struct smbmount*, sizeof(*smp), M_SMBFSDATA, M_WAITOK|M_USE_RESERVE);
163 kprintf("could not alloc smbmount\n");
167 bzero(smp, sizeof(*smp));
168 mp->mnt_data = (qaddr_t)smp;
169 smp->sm_cred = crhold(cred);
170 smp->sm_hash = hashinit(desiredvnodes, M_SMBFSHASH, &smp->sm_hashlen);
171 if (smp->sm_hash == NULL)
173 lockinit(&smp->sm_hashlock, "smbfsh", 0, 0);
177 smp->sm_caseopt = args.caseopt;
178 smp->sm_args.file_mode = (smp->sm_args.file_mode &
179 (S_IRWXU|S_IRWXG|S_IRWXO)) | S_IFREG;
180 smp->sm_args.dir_mode = (smp->sm_args.dir_mode &
181 (S_IRWXU|S_IRWXG|S_IRWXO)) | S_IFDIR;
183 /* simple_lock_init(&smp->sm_npslock);*/
184 pc = mp->mnt_stat.f_mntfromname;
185 pe = pc + sizeof(mp->mnt_stat.f_mntfromname);
189 pc=index(strncpy(pc, vcp->vc_username, pe - pc - 2), 0);
192 pc = index(strncpy(pc, vcp->vc_srvname, pe - pc - 2), 0);
195 strncpy(pc, ssp->ss_name, pe - pc - 2);
198 /* protect against invalid mount points */
199 smp->sm_args.mount_point[sizeof(smp->sm_args.mount_point) - 1] = '\0';
202 vfs_add_vnodeops(mp, &smbfs_vnode_vops, &mp->mnt_vn_norm_ops);
204 error = smbfs_root(mp, &vp);
208 SMBVDEBUG("root.v_sysrefs = %d\n", vp->v_sysref.refcnt);
211 SMBERROR("mp=%p\n", mp);
217 crfree(smp->sm_cred);
219 kfree(smp->sm_hash, M_SMBFSHASH);
220 lockdestroy(&smp->sm_hashlock);
222 zfree(smbfsmount_zone, smp);
224 kfree(smp, M_SMBFSDATA);
228 smb_share_put(ssp, &scred);
232 /* Unmount the filesystem described by mp. */
234 smbfs_unmount(struct mount *mp, int mntflags)
236 struct smbmount *smp = VFSTOSMBFS(mp);
237 struct smb_cred scred;
240 SMBVDEBUG("smbfs_unmount: flags=%04x\n", mntflags);
242 if (mntflags & MNT_FORCE)
245 * Keep trying to flush the vnode list for the mount while
246 * some are still busy and we are making progress towards
247 * making them not busy. This is needed because smbfs vnodes
248 * reference their parent directory but may appear after their
249 * parent in the list; one pass over the vnode list is not
250 * sufficient in this case.
254 /* There is 1 extra root vnode reference from smbfs_mount(). */
255 error = vflush(mp, 1, flags);
256 } while (error == EBUSY && smp->sm_didrele != 0);
259 smb_makescred(&scred, curthread, smp->sm_cred);
260 smb_share_put(smp->sm_share, &scred);
261 mp->mnt_data = (qaddr_t)0;
264 crfree(smp->sm_cred);
266 kfree(smp->sm_hash, M_SMBFSHASH);
267 lockdestroy(&smp->sm_hashlock);
269 zfree(smbfsmount_zone, smp);
271 kfree(smp, M_SMBFSDATA);
273 mp->mnt_flag &= ~MNT_LOCAL;
278 * Return locked root vnode of a filesystem
281 smbfs_root(struct mount *mp, struct vnode **vpp)
283 struct thread *td = curthread; /* XXX */
284 struct smbmount *smp = VFSTOSMBFS(mp);
287 struct smbfattr fattr;
289 struct smb_cred scred;
293 SMBERROR("smp == NULL (bug in umount)\n");
297 *vpp = SMBTOV(smp->sm_root);
298 return vget(*vpp, LK_EXCLUSIVE | LK_RETRY);
301 cred = td->td_proc->p_ucred;
303 cred = proc0.p_ucred;
305 smb_makescred(&scred, td, cred);
306 error = smbfs_smb_lookup(NULL, NULL, 0, &fattr, &scred);
309 error = smbfs_nget(mp, NULL, "TheRooT", 7, &fattr, &vp);
321 smbfs_init(struct vfsconf *vfsp)
324 smbfsmount_zone = zinit("SMBFSMOUNT", sizeof(struct smbmount), 0, 0, 1);
326 smbfs_pbuf_freecnt = nswbuf / 2 + 1;
327 SMBVDEBUG("done.\n");
333 smbfs_uninit(struct vfsconf *vfsp)
335 SMBVDEBUG("done.\n");
343 smbfs_statfs(struct mount *mp, struct statfs *sbp, struct ucred *cred)
345 struct smbmount *smp = VFSTOSMBFS(mp);
346 struct smbnode *np = smp->sm_root;
347 struct smb_share *ssp = smp->sm_share;
348 struct smb_cred scred;
354 sbp->f_iosize = SSTOVC(ssp)->vc_txmax; /* optimal transfer block size */
355 sbp->f_spare2 = 0; /* placeholder */
356 smb_makescred(&scred, curthread, cred);
358 if (SMB_DIALECT(SSTOVC(ssp)) >= SMB_DIALECT_LANMAN2_0)
359 error = smbfs_smb_statfs2(ssp, sbp, &scred);
361 error = smbfs_smb_statfs(ssp, sbp, &scred);
364 sbp->f_flags = 0; /* copy of mount exported flags */
365 if (sbp != &mp->mnt_stat) {
366 sbp->f_fsid = mp->mnt_stat.f_fsid; /* file system id */
367 sbp->f_owner = mp->mnt_stat.f_owner; /* user that mounted the filesystem */
368 sbp->f_type = mp->mnt_vfc->vfc_typenum; /* type of filesystem */
369 bcopy(mp->mnt_stat.f_mntfromname, sbp->f_mntfromname, MNAMELEN);
371 strncpy(sbp->f_fstypename, mp->mnt_vfc->vfc_name, MFSNAMELEN);
376 * Flush out the buffer cache
380 smbfs_sync(struct mount *mp, int waitfor)
383 int error, allerror = 0;
385 * Force stale buffer cache information to be flushed.
388 for (vp = TAILQ_FIRST(&mp->mnt_nvnodelist);
390 vp = TAILQ_NEXT(vp, v_nmntvnodes)) {
392 * If the vnode that we are about to sync is no longer
393 * associated with this mount point, start over.
395 if (vp->v_mount != mp)
397 if (vn_islocked(vp) || RB_EMPTY(&vp->v_rbdirty_tree) ||
400 if (vget(vp, LK_EXCLUSIVE))
402 error = VOP_FSYNC(vp, waitfor);
410 #if defined(__FreeBSD__) && __FreeBSD_version < 400009
412 * smbfs flat namespace lookup. Unsupported.
415 static int smbfs_vget(struct mount *mp, ino_t ino, struct vnode **vpp)
421 static int smbfs_fhtovp(struct mount *mp, struct fid *fhp,
422 struct sockaddr *nam, struct vnode **vpp,
423 int *exflagsp, struct ucred **credanonp)
429 * Vnode pointer to File handle, should never happen either
433 smbfs_vptofh(struct vnode *vp, struct fid *fhp)
438 #endif /* __FreeBSD_version < 400009 */