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.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 #include <sys/param.h>
29 #include <sys/systm.h>
30 #include <sys/kernel.h>
32 #include <sys/malloc.h>
33 #include <sys/mount.h>
35 #include <sys/queue.h>
38 #include <sys/sysctl.h>
40 #include <sys/vnode.h>
42 #include <netsmb/smb.h>
43 #include <netsmb/smb_conn.h>
44 #include <netsmb/smb_subr.h>
47 #include <vm/vm_extern.h>
48 /*#include <vm/vm_page.h>
49 #include <vm/vm_object.h>*/
51 #include <fs/smbfs/smbfs.h>
52 #include <fs/smbfs/smbfs_node.h>
53 #include <fs/smbfs/smbfs_subr.h>
55 #define SMBFS_NOHASH(smp, hval) (&(smp)->sm_hash[(hval) & (smp)->sm_hashlen])
56 #define smbfs_hash_lock(smp) sx_xlock(&smp->sm_hashlock)
57 #define smbfs_hash_unlock(smp) sx_xunlock(&smp->sm_hashlock)
59 extern struct vop_vector smbfs_vnodeops; /* XXX -> .h file */
61 static MALLOC_DEFINE(M_SMBNODE, "smbufs_node", "SMBFS vnode private part");
62 static MALLOC_DEFINE(M_SMBNODENAME, "smbufs_nname", "SMBFS node name");
64 int smbfs_hashprint(struct mount *mp);
68 SYSCTL_DECL(_vfs_smbfs);
70 SYSCTL_PROC(_vfs_smbfs, OID_AUTO, vnprint, CTLFLAG_WR|CTLTYPE_OPAQUE,
71 NULL, 0, smbfs_hashprint, "S,vnlist", "vnode hash");
74 #define FNV_32_PRIME ((u_int32_t) 0x01000193UL)
75 #define FNV1_32_INIT ((u_int32_t) 33554467UL)
78 smbfs_hash(const u_char *name, int nmlen)
82 for (v = FNV1_32_INIT; nmlen; name++, nmlen--) {
84 v ^= (u_int32_t)*name;
90 smbfs_hashprint(struct mount *mp)
92 struct smbmount *smp = VFSTOSMBFS(mp);
93 struct smbnode_hashhead *nhpp;
97 for(i = 0; i <= smp->sm_hashlen; i++) {
98 nhpp = &smp->sm_hash[i];
99 LIST_FOREACH(np, nhpp, n_hash)
100 vprint("", SMBTOV(np));
106 smbfs_name_alloc(const u_char *name, int nmlen)
111 #ifdef SMBFS_NAME_DEBUG
112 cp = malloc(nmlen + 2 + sizeof(int), M_SMBNODENAME, M_WAITOK);
117 bcopy(name, cp, nmlen - 1);
120 cp = malloc(nmlen, M_SMBNODENAME, M_WAITOK);
121 bcopy(name, cp, nmlen - 1);
128 smbfs_name_free(u_char *name)
130 #ifdef SMBFS_NAME_DEBUG
137 panic("First byte of name entry '%s' corrupted", name);
140 slen = strlen(name) + 1;
142 panic("Name length mismatch: was %d, now %d name '%s'",
144 if (name[nmlen] != 0xfe)
145 panic("Last byte of name entry '%s' corrupted\n", name);
146 free(cp, M_SMBNODENAME);
148 free(name, M_SMBNODENAME);
153 smbfs_node_alloc(struct mount *mp, struct vnode *dvp,
154 const char *name, int nmlen, struct smbfattr *fap, struct vnode **vpp)
157 struct thread *td = curthread; /* XXX */
158 struct smbmount *smp = VFSTOSMBFS(mp);
159 struct smbnode_hashhead *nhpp;
160 struct smbnode *np, *np2, *dnp;
166 if (smp->sm_root != NULL && dvp == NULL) {
167 SMBERROR("do not allocate root vnode twice!\n");
170 if (nmlen == 2 && bcmp(name, "..", 2) == 0) {
173 vp = VTOSMB(VTOSMB(dvp)->n_parent)->n_vnode;
174 error = vget(vp, LK_EXCLUSIVE, td);
178 } else if (nmlen == 1 && name[0] == '.') {
179 SMBERROR("do not call me with dot!\n");
182 dnp = dvp ? VTOSMB(dvp) : NULL;
183 if (dnp == NULL && dvp != NULL) {
184 vprint("smbfs_node_alloc: dead parent vnode", dvp);
187 hashval = smbfs_hash(name, nmlen);
189 smbfs_hash_lock(smp);
191 nhpp = SMBFS_NOHASH(smp, hashval);
192 LIST_FOREACH(np, nhpp, n_hash) {
194 if (np->n_parent != dvp ||
195 np->n_nmlen != nmlen || bcmp(name, np->n_name, nmlen) != 0)
198 smbfs_hash_unlock(smp);
199 if (vget(vp, LK_EXCLUSIVE | LK_INTERLOCK, td) != 0)
201 /* Force cached attributes to be refreshed if stale. */
202 (void)VOP_GETATTR(vp, &vattr, td->td_ucred);
204 * If the file type on the server is inconsistent with
205 * what it was when we created the vnode, kill the
206 * bogus vnode now and fall through to the code below
207 * to create a new one with the right type.
209 if ((vp->v_type == VDIR && (np->n_dosattr & SMB_FA_DIR) == 0) ||
210 (vp->v_type == VREG && (np->n_dosattr & SMB_FA_DIR) != 0)) {
218 smbfs_hash_unlock(smp);
220 * If we don't have node attributes, then it is an explicit lookup
221 * for an existing vnode.
226 np = malloc(sizeof *np, M_SMBNODE, M_WAITOK);
227 error = getnewvnode("smbfs", mp, &smbfs_vnodeops, &vp);
232 error = insmntque(vp, mp); /* XXX: Too early for mpsafe fs */
237 vp->v_type = fap->fa_attr & SMB_FA_DIR ? VDIR : VREG;
238 bzero(np, sizeof(*np));
241 np->n_mount = VFSTOSMBFS(mp);
243 np->n_name = smbfs_name_alloc(name, nmlen);
244 np->n_ino = fap->fa_ino;
247 ASSERT_VOP_LOCKED(dvp, "smbfs_node_alloc");
249 if (/*vp->v_type == VDIR &&*/ (dvp->v_vflag & VV_ROOT) == 0) {
251 np->n_flag |= NREFPARENT;
253 } else if (vp->v_type == VREG)
254 SMBERROR("new vnode '%s' born without parent ?\n", np->n_name);
256 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
259 smbfs_hash_lock(smp);
260 LIST_FOREACH(np2, nhpp, n_hash) {
261 if (np2->n_parent != dvp ||
262 np2->n_nmlen != nmlen || bcmp(name, np2->n_name, nmlen) != 0)
265 /* smb_name_free(np->n_name);
266 free(np, M_SMBNODE);*/
269 LIST_INSERT_HEAD(nhpp, np, n_hash);
270 smbfs_hash_unlock(smp);
276 smbfs_nget(struct mount *mp, struct vnode *dvp, const char *name, int nmlen,
277 struct smbfattr *fap, struct vnode **vpp)
284 error = smbfs_node_alloc(mp, dvp, name, nmlen, fap, &vp);
289 smbfs_attr_cacheenter(vp, fap);
295 * Free smbnode, and give vnode back to system
299 struct vop_reclaim_args /* {
304 struct vnode *vp = ap->a_vp;
306 struct smbnode *np = VTOSMB(vp);
307 struct smbmount *smp = VTOSMBFS(vp);
309 SMBVDEBUG("%s,%d\n", np->n_name, vrefcnt(vp));
311 KASSERT((np->n_flag & NOPEN) == 0, ("file not closed before reclaim"));
313 smbfs_hash_lock(smp);
315 * Destroy the vm object and flush associated pages.
317 vnode_destroy_vobject(vp);
319 dvp = (np->n_parent && (np->n_flag & NREFPARENT)) ?
322 if (np->n_hash.le_prev)
323 LIST_REMOVE(np, n_hash);
324 if (smp->sm_root == np) {
325 SMBVDEBUG("root vnode\n");
329 smbfs_hash_unlock(smp);
331 smbfs_name_free(np->n_name);
336 * Indicate that we released something; see comment
337 * in smbfs_unmount().
346 struct vop_inactive_args /* {
351 struct thread *td = ap->a_td;
352 struct ucred *cred = td->td_ucred;
353 struct vnode *vp = ap->a_vp;
354 struct smbnode *np = VTOSMB(vp);
355 struct smb_cred scred;
358 SMBVDEBUG("%s: %d\n", VTOSMB(vp)->n_name, vrefcnt(vp));
359 if ((np->n_flag & NOPEN) != 0) {
360 smb_makescred(&scred, td, cred);
361 smbfs_vinvalbuf(vp, td);
362 if (vp->v_type == VREG) {
363 VOP_GETATTR(vp, &va, cred);
364 smbfs_smb_close(np->n_mount->sm_share, np->n_fid,
365 &np->n_mtime, &scred);
366 } else if (vp->v_type == VDIR) {
367 if (np->n_dirseq != NULL) {
368 smbfs_findclose(np->n_dirseq, &scred);
372 np->n_flag &= ~NOPEN;
373 smbfs_attr_cacheremove(vp);
375 if (np->n_flag & NGONE)
380 * routines to maintain vnode attributes cache
381 * smbfs_attr_cacheenter: unpack np.i to vattr structure
384 smbfs_attr_cacheenter(struct vnode *vp, struct smbfattr *fap)
386 struct smbnode *np = VTOSMB(vp);
388 if (vp->v_type == VREG) {
389 if (np->n_size != fap->fa_size) {
390 np->n_size = fap->fa_size;
391 vnode_pager_setsize(vp, np->n_size);
393 } else if (vp->v_type == VDIR) {
394 np->n_size = 16384; /* should be a better way ... */
397 np->n_mtime = fap->fa_mtime;
398 np->n_dosattr = fap->fa_attr;
399 np->n_attrage = time_second;
404 smbfs_attr_cachelookup(struct vnode *vp, struct vattr *va)
406 struct smbnode *np = VTOSMB(vp);
407 struct smbmount *smp = VTOSMBFS(vp);
410 diff = time_second - np->n_attrage;
411 if (diff > 2) /* XXX should be configurable */
413 va->va_type = vp->v_type; /* vnode type (for create) */
414 if (vp->v_type == VREG) {
415 va->va_mode = smp->sm_file_mode; /* files access mode and type */
416 if (np->n_dosattr & SMB_FA_RDONLY)
417 va->va_mode &= ~(S_IWUSR|S_IWGRP|S_IWOTH);
418 } else if (vp->v_type == VDIR) {
419 va->va_mode = smp->sm_dir_mode; /* files access mode and type */
422 va->va_size = np->n_size;
423 va->va_nlink = 1; /* number of references to file */
424 va->va_uid = smp->sm_uid; /* owner user id */
425 va->va_gid = smp->sm_gid; /* owner group id */
426 va->va_fsid = vp->v_mount->mnt_stat.f_fsid.val[0];
427 va->va_fileid = np->n_ino; /* file id */
428 if (va->va_fileid == 0)
430 va->va_blocksize = SSTOVC(smp->sm_share)->vc_txmax;
431 va->va_mtime = np->n_mtime;
432 va->va_atime = va->va_ctime = va->va_mtime; /* time file changed */
433 va->va_gen = VNOVAL; /* generation number of file */
434 va->va_flags = 0; /* flags defined for file */
435 va->va_rdev = NODEV; /* device the special file represents */
436 va->va_bytes = va->va_size; /* bytes of disk space held by file */
437 va->va_filerev = 0; /* file modification number */
438 va->va_vaflags = 0; /* operations flags */