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
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/kernel.h>
38 #include <sys/malloc.h>
39 #include <sys/mount.h>
41 #include <sys/queue.h>
44 #include <sys/sysctl.h>
46 #include <sys/vnode.h>
48 #include <netsmb/smb.h>
49 #include <netsmb/smb_conn.h>
50 #include <netsmb/smb_subr.h>
53 #include <vm/vm_extern.h>
54 /*#include <vm/vm_page.h>
55 #include <vm/vm_object.h>*/
57 #include <fs/smbfs/smbfs.h>
58 #include <fs/smbfs/smbfs_node.h>
59 #include <fs/smbfs/smbfs_subr.h>
61 #define SMBFS_NOHASH(smp, hval) (&(smp)->sm_hash[(hval) & (smp)->sm_hashlen])
62 #define smbfs_hash_lock(smp) sx_xlock(&smp->sm_hashlock)
63 #define smbfs_hash_unlock(smp) sx_xunlock(&smp->sm_hashlock)
65 extern struct vop_vector smbfs_vnodeops; /* XXX -> .h file */
67 MALLOC_DEFINE(M_SMBNODE, "smbufs_node", "SMBFS vnode private part");
68 static MALLOC_DEFINE(M_SMBNODENAME, "smbufs_nname", "SMBFS node name");
70 int smbfs_hashprint(struct mount *mp);
74 SYSCTL_DECL(_vfs_smbfs);
76 SYSCTL_PROC(_vfs_smbfs, OID_AUTO, vnprint, CTLFLAG_WR|CTLTYPE_OPAQUE,
77 NULL, 0, smbfs_hashprint, "S,vnlist", "vnode hash");
80 #define FNV_32_PRIME ((u_int32_t) 0x01000193UL)
81 #define FNV1_32_INIT ((u_int32_t) 33554467UL)
84 smbfs_hash(const u_char *name, int nmlen)
88 for (v = FNV1_32_INIT; nmlen; name++, nmlen--) {
90 v ^= (u_int32_t)*name;
96 smbfs_hashprint(struct mount *mp)
98 struct smbmount *smp = VFSTOSMBFS(mp);
99 struct smbnode_hashhead *nhpp;
103 for(i = 0; i <= smp->sm_hashlen; i++) {
104 nhpp = &smp->sm_hash[i];
105 LIST_FOREACH(np, nhpp, n_hash)
106 vprint("", SMBTOV(np));
112 smbfs_name_alloc(const u_char *name, int nmlen)
117 #ifdef SMBFS_NAME_DEBUG
118 cp = malloc(nmlen + 2 + sizeof(int), M_SMBNODENAME, M_WAITOK);
123 bcopy(name, cp, nmlen - 1);
126 cp = malloc(nmlen, M_SMBNODENAME, M_WAITOK);
127 bcopy(name, cp, nmlen - 1);
134 smbfs_name_free(u_char *name)
136 #ifdef SMBFS_NAME_DEBUG
143 panic("First byte of name entry '%s' corrupted", name);
146 slen = strlen(name) + 1;
148 panic("Name length mismatch: was %d, now %d name '%s'",
150 if (name[nmlen] != 0xfe)
151 panic("Last byte of name entry '%s' corrupted\n", name);
152 free(cp, M_SMBNODENAME);
154 free(name, M_SMBNODENAME);
159 smbfs_node_alloc(struct mount *mp, struct vnode *dvp,
160 const char *name, int nmlen, struct smbfattr *fap, struct vnode **vpp)
163 struct thread *td = curthread; /* XXX */
164 struct smbmount *smp = VFSTOSMBFS(mp);
165 struct smbnode_hashhead *nhpp;
166 struct smbnode *np, *np2, *dnp;
172 if (smp->sm_root != NULL && dvp == NULL) {
173 SMBERROR("do not allocate root vnode twice!\n");
176 if (nmlen == 2 && bcmp(name, "..", 2) == 0) {
179 vp = VTOSMB(VTOSMB(dvp)->n_parent)->n_vnode;
180 error = vget(vp, LK_EXCLUSIVE, td);
184 } else if (nmlen == 1 && name[0] == '.') {
185 SMBERROR("do not call me with dot!\n");
188 dnp = dvp ? VTOSMB(dvp) : NULL;
189 if (dnp == NULL && dvp != NULL) {
190 vprint("smbfs_node_alloc: dead parent vnode", dvp);
193 hashval = smbfs_hash(name, nmlen);
195 smbfs_hash_lock(smp);
197 nhpp = SMBFS_NOHASH(smp, hashval);
198 LIST_FOREACH(np, nhpp, n_hash) {
200 if (np->n_parent != dvp ||
201 np->n_nmlen != nmlen || bcmp(name, np->n_name, nmlen) != 0)
204 smbfs_hash_unlock(smp);
205 if (vget(vp, LK_EXCLUSIVE | LK_INTERLOCK, td) != 0)
207 /* Force cached attributes to be refreshed if stale. */
208 (void)VOP_GETATTR(vp, &vattr, td->td_ucred);
210 * If the file type on the server is inconsistent with
211 * what it was when we created the vnode, kill the
212 * bogus vnode now and fall through to the code below
213 * to create a new one with the right type.
215 if ((vp->v_type == VDIR && (np->n_dosattr & SMB_FA_DIR) == 0) ||
216 (vp->v_type == VREG && (np->n_dosattr & SMB_FA_DIR) != 0)) {
224 smbfs_hash_unlock(smp);
226 * If we don't have node attributes, then it is an explicit lookup
227 * for an existing vnode.
232 MALLOC(np, struct smbnode *, sizeof *np, M_SMBNODE, M_WAITOK);
233 error = getnewvnode("smbfs", mp, &smbfs_vnodeops, &vp);
238 error = insmntque(vp, mp); /* XXX: Too early for mpsafe fs */
243 vp->v_type = fap->fa_attr & SMB_FA_DIR ? VDIR : VREG;
244 bzero(np, sizeof(*np));
247 np->n_mount = VFSTOSMBFS(mp);
249 np->n_name = smbfs_name_alloc(name, nmlen);
250 np->n_ino = fap->fa_ino;
253 ASSERT_VOP_LOCKED(dvp, "smbfs_node_alloc");
255 if (/*vp->v_type == VDIR &&*/ (dvp->v_vflag & VV_ROOT) == 0) {
257 np->n_flag |= NREFPARENT;
259 } else if (vp->v_type == VREG)
260 SMBERROR("new vnode '%s' born without parent ?\n", np->n_name);
263 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
265 smbfs_hash_lock(smp);
266 LIST_FOREACH(np2, nhpp, n_hash) {
267 if (np2->n_parent != dvp ||
268 np2->n_nmlen != nmlen || bcmp(name, np2->n_name, nmlen) != 0)
271 /* smb_name_free(np->n_name);
272 FREE(np, M_SMBNODE);*/
275 LIST_INSERT_HEAD(nhpp, np, n_hash);
276 smbfs_hash_unlock(smp);
282 smbfs_nget(struct mount *mp, struct vnode *dvp, const char *name, int nmlen,
283 struct smbfattr *fap, struct vnode **vpp)
290 error = smbfs_node_alloc(mp, dvp, name, nmlen, fap, &vp);
295 smbfs_attr_cacheenter(vp, fap);
301 * Free smbnode, and give vnode back to system
305 struct vop_reclaim_args /* {
310 struct vnode *vp = ap->a_vp;
312 struct smbnode *np = VTOSMB(vp);
313 struct smbmount *smp = VTOSMBFS(vp);
315 SMBVDEBUG("%s,%d\n", np->n_name, vrefcnt(vp));
317 KASSERT((np->n_flag & NOPEN) == 0, ("file not closed before reclaim"));
319 smbfs_hash_lock(smp);
321 * Destroy the vm object and flush associated pages.
323 vnode_destroy_vobject(vp);
325 dvp = (np->n_parent && (np->n_flag & NREFPARENT)) ?
328 if (np->n_hash.le_prev)
329 LIST_REMOVE(np, n_hash);
330 if (smp->sm_root == np) {
331 SMBVDEBUG("root vnode\n");
335 smbfs_hash_unlock(smp);
337 smbfs_name_free(np->n_name);
342 * Indicate that we released something; see comment
343 * in smbfs_unmount().
352 struct vop_inactive_args /* {
357 struct thread *td = ap->a_td;
358 struct ucred *cred = td->td_ucred;
359 struct vnode *vp = ap->a_vp;
360 struct smbnode *np = VTOSMB(vp);
361 struct smb_cred scred;
364 SMBVDEBUG("%s: %d\n", VTOSMB(vp)->n_name, vrefcnt(vp));
365 if ((np->n_flag & NOPEN) != 0) {
366 smb_makescred(&scred, td, cred);
367 smbfs_vinvalbuf(vp, td);
368 if (vp->v_type == VREG) {
369 VOP_GETATTR(vp, &va, cred);
370 smbfs_smb_close(np->n_mount->sm_share, np->n_fid,
371 &np->n_mtime, &scred);
372 } else if (vp->v_type == VDIR) {
373 if (np->n_dirseq != NULL) {
374 smbfs_findclose(np->n_dirseq, &scred);
378 np->n_flag &= ~NOPEN;
379 smbfs_attr_cacheremove(vp);
381 if (np->n_flag & NGONE)
386 * routines to maintain vnode attributes cache
387 * smbfs_attr_cacheenter: unpack np.i to vattr structure
390 smbfs_attr_cacheenter(struct vnode *vp, struct smbfattr *fap)
392 struct smbnode *np = VTOSMB(vp);
394 if (vp->v_type == VREG) {
395 if (np->n_size != fap->fa_size) {
396 np->n_size = fap->fa_size;
397 vnode_pager_setsize(vp, np->n_size);
399 } else if (vp->v_type == VDIR) {
400 np->n_size = 16384; /* should be a better way ... */
403 np->n_mtime = fap->fa_mtime;
404 np->n_dosattr = fap->fa_attr;
405 np->n_attrage = time_second;
410 smbfs_attr_cachelookup(struct vnode *vp, struct vattr *va)
412 struct smbnode *np = VTOSMB(vp);
413 struct smbmount *smp = VTOSMBFS(vp);
416 diff = time_second - np->n_attrage;
417 if (diff > 2) /* XXX should be configurable */
419 va->va_type = vp->v_type; /* vnode type (for create) */
420 if (vp->v_type == VREG) {
421 va->va_mode = smp->sm_file_mode; /* files access mode and type */
422 if (np->n_dosattr & SMB_FA_RDONLY)
423 va->va_mode &= ~(S_IWUSR|S_IWGRP|S_IWOTH);
424 } else if (vp->v_type == VDIR) {
425 va->va_mode = smp->sm_dir_mode; /* files access mode and type */
428 va->va_size = np->n_size;
429 va->va_nlink = 1; /* number of references to file */
430 va->va_uid = smp->sm_uid; /* owner user id */
431 va->va_gid = smp->sm_gid; /* owner group id */
432 va->va_fsid = vp->v_mount->mnt_stat.f_fsid.val[0];
433 va->va_fileid = np->n_ino; /* file id */
434 if (va->va_fileid == 0)
436 va->va_blocksize = SSTOVC(smp->sm_share)->vc_txmax;
437 va->va_mtime = np->n_mtime;
438 va->va_atime = va->va_ctime = va->va_mtime; /* time file changed */
439 va->va_gen = VNOVAL; /* generation number of file */
440 va->va_flags = 0; /* flags defined for file */
441 va->va_rdev = NODEV; /* device the special file represents */
442 va->va_bytes = va->va_size; /* bytes of disk space held by file */
443 va->va_filerev = 0; /* file modification number */
444 va->va_vaflags = 0; /* operations flags */