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;
71 SYSCTL_NODE(_vfs, OID_AUTO, smbfs, CTLFLAG_RW, 0, "SMB/CIFS file system");
72 SYSCTL_INT(_vfs_smbfs, OID_AUTO, version, CTLFLAG_RD, &smbfs_version, 0, "");
73 SYSCTL_INT(_vfs_smbfs, OID_AUTO, debuglevel, CTLFLAG_RW, &smbfs_debuglevel, 0, "");
75 static MALLOC_DEFINE(M_SMBFSHASH, "SMBFS hash", "SMBFS hash table");
78 static int smbfs_mount(struct mount *, char *, caddr_t, struct ucred *);
79 static int smbfs_root(struct mount *, struct vnode **);
80 static int smbfs_statfs(struct mount *, struct statfs *, struct ucred *);
81 static int smbfs_sync(struct mount *, int);
82 static int smbfs_unmount(struct mount *, int);
83 static int smbfs_init(struct vfsconf *vfsp);
84 static int smbfs_uninit(struct vfsconf *vfsp);
86 static struct vfsops smbfs_vfsops = {
87 .vfs_mount = smbfs_mount,
88 .vfs_unmount = smbfs_unmount,
89 .vfs_root = smbfs_root,
90 .vfs_statfs = smbfs_statfs,
91 .vfs_sync = smbfs_sync,
92 .vfs_init = smbfs_init,
93 .vfs_uninit = smbfs_uninit
97 VFS_SET(smbfs_vfsops, smbfs, VFCF_NETWORK);
98 MODULE_VERSION(smbfs, 1);
100 MODULE_DEPEND(smbfs, netsmb, NSMB_VERSION, NSMB_VERSION, NSMB_VERSION);
101 MODULE_DEPEND(smbfs, libiconv, 1, 1, 2);
102 MODULE_DEPEND(smbfs, libmchain, 1, 1, 1);
104 long smbfs_pbuf_freecnt = -1; /* start out unlimited */
107 smbfs_mount(struct mount *mp, char *path, caddr_t data, struct ucred *cred)
109 struct smbfs_args args; /* will hold data from mount request */
110 struct smbmount *smp = NULL;
112 struct smb_share *ssp = NULL;
114 struct smb_cred scred;
119 kprintf("missing data argument\n");
122 if (mp->mnt_flag & MNT_UPDATE) {
123 kprintf("MNT_UPDATE not implemented");
126 error = copyin(data, (caddr_t)&args, sizeof(struct smbfs_args));
129 if (args.version != SMBFS_VERSION) {
130 kprintf("mount version mismatch: kernel=%d, mount=%d\n",
131 SMBFS_VERSION, args.version);
134 smb_makescred(&scred, curthread, cred);
135 error = smb_dev2share(args.dev, SMBM_EXEC, &scred, &ssp);
137 kprintf("invalid device handle %d (%d)\n", args.dev, error);
141 smb_share_unlock(ssp, 0);
142 mp->mnt_stat.f_iosize = SSTOVC(ssp)->vc_txmax;
144 smp = kmalloc(sizeof(*smp), M_SMBFSDATA, M_WAITOK | M_USE_RESERVE | M_ZERO);
145 mp->mnt_data = (qaddr_t)smp;
146 smp->sm_cred = crhold(cred);
147 smp->sm_hash = hashinit(desiredvnodes, M_SMBFSHASH, &smp->sm_hashlen);
148 if (smp->sm_hash == NULL)
150 lockinit(&smp->sm_hashlock, "smbfsh", 0, 0);
154 smp->sm_caseopt = args.caseopt;
155 smp->sm_args.file_mode = (smp->sm_args.file_mode &
156 (S_IRWXU|S_IRWXG|S_IRWXO)) | S_IFREG;
157 smp->sm_args.dir_mode = (smp->sm_args.dir_mode &
158 (S_IRWXU|S_IRWXG|S_IRWXO)) | S_IFDIR;
160 /* simple_lock_init(&smp->sm_npslock);*/
161 pc = mp->mnt_stat.f_mntfromname;
162 pe = pc + sizeof(mp->mnt_stat.f_mntfromname);
166 pc=index(strncpy(pc, vcp->vc_username, pe - pc - 2), 0);
169 pc = index(strncpy(pc, vcp->vc_srvname, pe - pc - 2), 0);
172 strncpy(pc, ssp->ss_name, pe - pc - 2);
175 /* protect against invalid mount points */
176 smp->sm_args.mount_point[sizeof(smp->sm_args.mount_point) - 1] = '\0';
179 vfs_add_vnodeops(mp, &smbfs_vnode_vops, &mp->mnt_vn_norm_ops);
181 error = smbfs_root(mp, &vp);
185 SMBVDEBUG("root.v_refcnt = %08x\n", vp->v_refcnt);
188 SMBERROR("mp=%p\n", mp);
194 crfree(smp->sm_cred);
196 hashdestroy(smp->sm_hash, M_SMBFSHASH,
198 lockdestroy(&smp->sm_hashlock);
199 kfree(smp, M_SMBFSDATA);
202 smb_share_put(ssp, &scred);
206 /* Unmount the filesystem described by mp. */
208 smbfs_unmount(struct mount *mp, int mntflags)
210 struct smbmount *smp = VFSTOSMBFS(mp);
211 struct smb_cred scred;
214 SMBVDEBUG("smbfs_unmount: flags=%04x\n", mntflags);
216 if (mntflags & MNT_FORCE)
219 * Keep trying to flush the vnode list for the mount while
220 * some are still busy and we are making progress towards
221 * making them not busy. This is needed because smbfs vnodes
222 * reference their parent directory but may appear after their
223 * parent in the list; one pass over the vnode list is not
224 * sufficient in this case.
228 /* There is 1 extra root vnode reference from smbfs_mount(). */
229 error = vflush(mp, 1, flags);
230 } while (error == EBUSY && smp->sm_didrele != 0);
233 smb_makescred(&scred, curthread, smp->sm_cred);
234 smb_share_put(smp->sm_share, &scred);
235 mp->mnt_data = (qaddr_t)0;
238 crfree(smp->sm_cred);
240 hashdestroy(smp->sm_hash, M_SMBFSHASH, smp->sm_hashlen);
241 lockdestroy(&smp->sm_hashlock);
242 kfree(smp, M_SMBFSDATA);
243 mp->mnt_flag &= ~MNT_LOCAL;
248 * Return locked root vnode of a filesystem
251 smbfs_root(struct mount *mp, struct vnode **vpp)
253 struct thread *td = curthread; /* XXX */
254 struct smbmount *smp = VFSTOSMBFS(mp);
257 struct smbfattr fattr;
259 struct smb_cred scred;
263 SMBERROR("smp == NULL (bug in umount)\n");
267 *vpp = SMBTOV(smp->sm_root);
268 return vget(*vpp, LK_EXCLUSIVE | LK_RETRY);
271 cred = td->td_proc->p_ucred;
273 cred = proc0.p_ucred;
275 smb_makescred(&scred, td, cred);
276 error = smbfs_smb_lookup(NULL, NULL, 0, &fattr, &scred);
279 error = smbfs_nget(mp, NULL, "TheRooT", 7, &fattr, &vp);
282 vsetflags(vp, VROOT);
291 smbfs_init(struct vfsconf *vfsp)
293 smbfs_pbuf_freecnt = nswbuf_kva / 2 + 1;
294 SMBVDEBUG("done.\n");
300 smbfs_uninit(struct vfsconf *vfsp)
302 SMBVDEBUG("done.\n");
310 smbfs_statfs(struct mount *mp, struct statfs *sbp, struct ucred *cred)
312 struct smbmount *smp = VFSTOSMBFS(mp);
313 struct smbnode *np = smp->sm_root;
314 struct smb_share *ssp = smp->sm_share;
315 struct smb_cred scred;
321 sbp->f_iosize = SSTOVC(ssp)->vc_txmax; /* optimal transfer block size */
322 sbp->f_spare2 = 0; /* placeholder */
323 smb_makescred(&scred, curthread, cred);
325 if (SMB_DIALECT(SSTOVC(ssp)) >= SMB_DIALECT_LANMAN2_0)
326 error = smbfs_smb_statfs2(ssp, sbp, &scred);
328 error = smbfs_smb_statfs(ssp, sbp, &scred);
331 sbp->f_flags = 0; /* copy of mount exported flags */
332 if (sbp != &mp->mnt_stat) {
333 sbp->f_fsid = mp->mnt_stat.f_fsid; /* file system id */
334 sbp->f_owner = mp->mnt_stat.f_owner; /* user that mounted the filesystem */
335 sbp->f_type = mp->mnt_vfc->vfc_typenum; /* type of filesystem */
336 bcopy(mp->mnt_stat.f_mntfromname, sbp->f_mntfromname, MNAMELEN);
338 strncpy(sbp->f_fstypename, mp->mnt_vfc->vfc_name, MFSNAMELEN);
343 * Flush out the buffer cache
347 smbfs_sync(struct mount *mp, int waitfor)
350 int error, allerror = 0;
352 * Force stale buffer cache information to be flushed.
355 for (vp = TAILQ_FIRST(&mp->mnt_nvnodelist);
357 vp = TAILQ_NEXT(vp, v_nmntvnodes)) {
359 * If the vnode that we are about to sync is no longer
360 * associated with this mount point, start over.
362 if (vp->v_mount != mp)
364 if (vn_islocked(vp) || RB_EMPTY(&vp->v_rbdirty_tree) ||
365 (waitfor & MNT_LAZY))
367 if (vget(vp, LK_EXCLUSIVE))
369 error = VOP_FSYNC(vp, waitfor, 0);