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 $
36 #include "opt_netsmb.h"
38 #error "SMBFS requires option NETSMB"
42 #include <sys/param.h>
43 #include <sys/systm.h>
45 #include <sys/kernel.h>
46 #include <sys/sysctl.h>
47 #include <sys/vnode.h>
48 #include <sys/mount.h>
50 #include <sys/malloc.h>
51 #include <sys/module.h>
54 #include <netproto/smb/smb.h>
55 #include <netproto/smb/smb_conn.h>
56 #include <netproto/smb/smb_subr.h>
57 #include <netproto/smb/smb_dev.h>
60 #include "smbfs_node.h"
61 #include "smbfs_subr.h"
65 extern struct vop_ops smbfs_vnode_vops;
67 int smbfs_debuglevel = 0;
69 static int smbfs_version = SMBFS_VERSION;
73 #include <vm/vm_extern.h>
74 #include <vm/vm_zone.h>
76 vm_zone_t smbfsmount_zone;
79 SYSCTL_NODE(_vfs, OID_AUTO, smbfs, CTLFLAG_RW, 0, "SMB/CIFS file system");
80 SYSCTL_INT(_vfs_smbfs, OID_AUTO, version, CTLFLAG_RD, &smbfs_version, 0, "");
81 SYSCTL_INT(_vfs_smbfs, OID_AUTO, debuglevel, CTLFLAG_RW, &smbfs_debuglevel, 0, "");
83 static MALLOC_DEFINE(M_SMBFSHASH, "SMBFS hash", "SMBFS hash table");
86 static int smbfs_mount(struct mount *, char *, caddr_t, struct ucred *);
87 static int smbfs_root(struct mount *, struct vnode **);
88 static int smbfs_statfs(struct mount *, struct statfs *, struct ucred *);
89 static int smbfs_sync(struct mount *, int);
90 static int smbfs_unmount(struct mount *, int);
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 = {
103 .vfs_mount = smbfs_mount,
104 .vfs_unmount = smbfs_unmount,
105 .vfs_root = smbfs_root,
106 .vfs_statfs = smbfs_statfs,
107 .vfs_sync = smbfs_sync,
108 .vfs_init = smbfs_init,
109 .vfs_uninit = smbfs_uninit
113 VFS_SET(smbfs_vfsops, smbfs, VFCF_NETWORK);
114 MODULE_VERSION(smbfs, 1);
116 MODULE_DEPEND(smbfs, netsmb, NSMB_VERSION, NSMB_VERSION, NSMB_VERSION);
117 MODULE_DEPEND(smbfs, libiconv, 1, 1, 2);
118 MODULE_DEPEND(smbfs, libmchain, 1, 1, 1);
120 int smbfs_pbuf_freecnt = -1; /* start out unlimited */
123 smbfs_mount(struct mount *mp, char *path, caddr_t data, struct ucred *cred)
125 struct smbfs_args args; /* will hold data from mount request */
126 struct smbmount *smp = NULL;
128 struct smb_share *ssp = NULL;
130 struct smb_cred scred;
135 kprintf("missing data argument\n");
138 if (mp->mnt_flag & MNT_UPDATE) {
139 kprintf("MNT_UPDATE not implemented");
142 error = copyin(data, (caddr_t)&args, sizeof(struct smbfs_args));
145 if (args.version != SMBFS_VERSION) {
146 kprintf("mount version mismatch: kernel=%d, mount=%d\n",
147 SMBFS_VERSION, args.version);
150 smb_makescred(&scred, curthread, cred);
151 error = smb_dev2share(args.dev, SMBM_EXEC, &scred, &ssp);
153 kprintf("invalid device handle %d (%d)\n", args.dev, error);
157 smb_share_unlock(ssp, 0);
158 mp->mnt_stat.f_iosize = SSTOVC(ssp)->vc_txmax;
161 smp = zalloc(smbfsmount_zone);
163 smp = kmalloc(sizeof(*smp), M_SMBFSDATA, M_WAITOK | M_USE_RESERVE);
166 kprintf("could not alloc smbmount\n");
170 bzero(smp, sizeof(*smp));
171 mp->mnt_data = (qaddr_t)smp;
172 smp->sm_cred = crhold(cred);
173 smp->sm_hash = hashinit(desiredvnodes, M_SMBFSHASH, &smp->sm_hashlen);
174 if (smp->sm_hash == NULL)
176 lockinit(&smp->sm_hashlock, "smbfsh", 0, 0);
180 smp->sm_caseopt = args.caseopt;
181 smp->sm_args.file_mode = (smp->sm_args.file_mode &
182 (S_IRWXU|S_IRWXG|S_IRWXO)) | S_IFREG;
183 smp->sm_args.dir_mode = (smp->sm_args.dir_mode &
184 (S_IRWXU|S_IRWXG|S_IRWXO)) | S_IFDIR;
186 /* simple_lock_init(&smp->sm_npslock);*/
187 pc = mp->mnt_stat.f_mntfromname;
188 pe = pc + sizeof(mp->mnt_stat.f_mntfromname);
192 pc=index(strncpy(pc, vcp->vc_username, pe - pc - 2), 0);
195 pc = index(strncpy(pc, vcp->vc_srvname, pe - pc - 2), 0);
198 strncpy(pc, ssp->ss_name, pe - pc - 2);
201 /* protect against invalid mount points */
202 smp->sm_args.mount_point[sizeof(smp->sm_args.mount_point) - 1] = '\0';
205 vfs_add_vnodeops(mp, &smbfs_vnode_vops, &mp->mnt_vn_norm_ops);
207 error = smbfs_root(mp, &vp);
211 SMBVDEBUG("root.v_sysrefs = %d\n", vp->v_sysref.refcnt);
214 SMBERROR("mp=%p\n", mp);
220 crfree(smp->sm_cred);
222 hashdestroy(smp->sm_hash, M_SMBFSHASH,
224 lockdestroy(&smp->sm_hashlock);
226 zfree(smbfsmount_zone, smp);
228 kfree(smp, M_SMBFSDATA);
232 smb_share_put(ssp, &scred);
236 /* Unmount the filesystem described by mp. */
238 smbfs_unmount(struct mount *mp, int mntflags)
240 struct smbmount *smp = VFSTOSMBFS(mp);
241 struct smb_cred scred;
244 SMBVDEBUG("smbfs_unmount: flags=%04x\n", mntflags);
246 if (mntflags & MNT_FORCE)
249 * Keep trying to flush the vnode list for the mount while
250 * some are still busy and we are making progress towards
251 * making them not busy. This is needed because smbfs vnodes
252 * reference their parent directory but may appear after their
253 * parent in the list; one pass over the vnode list is not
254 * sufficient in this case.
258 /* There is 1 extra root vnode reference from smbfs_mount(). */
259 error = vflush(mp, 1, flags);
260 } while (error == EBUSY && smp->sm_didrele != 0);
263 smb_makescred(&scred, curthread, smp->sm_cred);
264 smb_share_put(smp->sm_share, &scred);
265 mp->mnt_data = (qaddr_t)0;
268 crfree(smp->sm_cred);
270 hashdestroy(smp->sm_hash, M_SMBFSHASH, smp->sm_hashlen);
271 lockdestroy(&smp->sm_hashlock);
273 zfree(smbfsmount_zone, smp);
275 kfree(smp, M_SMBFSDATA);
277 mp->mnt_flag &= ~MNT_LOCAL;
282 * Return locked root vnode of a filesystem
285 smbfs_root(struct mount *mp, struct vnode **vpp)
287 struct thread *td = curthread; /* XXX */
288 struct smbmount *smp = VFSTOSMBFS(mp);
291 struct smbfattr fattr;
293 struct smb_cred scred;
297 SMBERROR("smp == NULL (bug in umount)\n");
301 *vpp = SMBTOV(smp->sm_root);
302 return vget(*vpp, LK_EXCLUSIVE | LK_RETRY);
305 cred = td->td_proc->p_ucred;
307 cred = proc0.p_ucred;
309 smb_makescred(&scred, td, cred);
310 error = smbfs_smb_lookup(NULL, NULL, 0, &fattr, &scred);
313 error = smbfs_nget(mp, NULL, "TheRooT", 7, &fattr, &vp);
316 vsetflags(vp, VROOT);
325 smbfs_init(struct vfsconf *vfsp)
328 smbfsmount_zone = zinit("SMBFSMOUNT", sizeof(struct smbmount), 0, 0, 1);
330 smbfs_pbuf_freecnt = nswbuf / 2 + 1;
331 SMBVDEBUG("done.\n");
337 smbfs_uninit(struct vfsconf *vfsp)
339 SMBVDEBUG("done.\n");
347 smbfs_statfs(struct mount *mp, struct statfs *sbp, struct ucred *cred)
349 struct smbmount *smp = VFSTOSMBFS(mp);
350 struct smbnode *np = smp->sm_root;
351 struct smb_share *ssp = smp->sm_share;
352 struct smb_cred scred;
358 sbp->f_iosize = SSTOVC(ssp)->vc_txmax; /* optimal transfer block size */
359 sbp->f_spare2 = 0; /* placeholder */
360 smb_makescred(&scred, curthread, cred);
362 if (SMB_DIALECT(SSTOVC(ssp)) >= SMB_DIALECT_LANMAN2_0)
363 error = smbfs_smb_statfs2(ssp, sbp, &scred);
365 error = smbfs_smb_statfs(ssp, sbp, &scred);
368 sbp->f_flags = 0; /* copy of mount exported flags */
369 if (sbp != &mp->mnt_stat) {
370 sbp->f_fsid = mp->mnt_stat.f_fsid; /* file system id */
371 sbp->f_owner = mp->mnt_stat.f_owner; /* user that mounted the filesystem */
372 sbp->f_type = mp->mnt_vfc->vfc_typenum; /* type of filesystem */
373 bcopy(mp->mnt_stat.f_mntfromname, sbp->f_mntfromname, MNAMELEN);
375 strncpy(sbp->f_fstypename, mp->mnt_vfc->vfc_name, MFSNAMELEN);
380 * Flush out the buffer cache
384 smbfs_sync(struct mount *mp, int waitfor)
387 int error, allerror = 0;
389 * Force stale buffer cache information to be flushed.
392 for (vp = TAILQ_FIRST(&mp->mnt_nvnodelist);
394 vp = TAILQ_NEXT(vp, v_nmntvnodes)) {
396 * If the vnode that we are about to sync is no longer
397 * associated with this mount point, start over.
399 if (vp->v_mount != mp)
401 if (vn_islocked(vp) || RB_EMPTY(&vp->v_rbdirty_tree) ||
402 (waitfor & MNT_LAZY))
404 if (vget(vp, LK_EXCLUSIVE))
406 error = VOP_FSYNC(vp, waitfor, 0);
414 #if defined(__FreeBSD__) && __FreeBSD_version < 400009
416 * smbfs flat namespace lookup. Unsupported.
419 static int smbfs_vget(struct mount *mp, ino_t ino, struct vnode **vpp)
425 static int smbfs_fhtovp(struct mount *mp, struct fid *fhp,
426 struct sockaddr *nam, struct vnode **vpp,
427 int *exflagsp, struct ucred **credanonp)
433 * Vnode pointer to File handle, should never happen either
437 smbfs_vptofh(struct vnode *vp, struct fid *fhp)
442 #endif /* __FreeBSD_version < 400009 */