2 * Copyright (c) 1999, 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>
39 #include <sys/mount.h>
40 #include <sys/namei.h>
41 #include <sys/vnode.h>
42 #include <sys/malloc.h>
43 #include <sys/sysctl.h>
45 #include <vm/vm_extern.h>
46 #include <vm/vm_prot.h>
47 #include <vm/vm_page.h>
48 #include <vm/vm_object.h>
49 #include <vm/vm_pager.h>
50 #include <vm/vnode_pager.h>
51 #include <vm/vm_zone.h>
52 #include <sys/queue.h>
54 #include <netncp/ncp.h>
55 #include <netncp/ncp_conn.h>
56 #include <netncp/ncp_subr.h>
58 #include <nwfs/nwfs.h>
59 #include <nwfs/nwfs_mount.h>
60 #include <nwfs/nwfs_node.h>
61 #include <nwfs/nwfs_subr.h>
63 #define NWNOHASH(fhsum) (&nwhashtbl[(fhsum.f_id) & nwnodehash])
65 extern vop_t **nwfs_vnodeop_p;
67 static LIST_HEAD(nwnode_hash_head,nwnode) *nwhashtbl;
68 static u_long nwnodehash;
69 static int nwhashlock = 0;
71 MALLOC_DEFINE(M_NWNODE, "NWFS node", "NWFS vnode private part");
72 MALLOC_DEFINE(M_NWFSHASH, "NWFS hash", "NWFS has table");
74 static int nwfs_sysctl_vnprint SYSCTL_HANDLER_ARGS;
76 extern struct linker_set sysctl_vfs_nwfs;
78 SYSCTL_DECL(_vfs_nwfs);
80 SYSCTL_PROC(_vfs_nwfs, OID_AUTO, vnprint, CTLFLAG_WR|CTLTYPE_OPAQUE,
81 NULL, 0, nwfs_sysctl_vnprint, "S,vnlist", "vnode hash");
84 nwfs_hash_init(void) {
85 nwhashtbl = hashinit(desiredvnodes, M_NWFSHASH, &nwnodehash);
89 nwfs_hash_free(void) {
90 free(nwhashtbl, M_NWFSHASH);
94 nwfs_sysctl_vnprint SYSCTL_HANDLER_ARGS {
96 struct nwnode_hash_head *nhpp;
100 if (nwfs_debuglevel == 0)
102 printf("Name:uc:hc:fid:pfid\n");
103 for(i = 0; i <= nwnodehash; i++) {
104 nhpp = &nwhashtbl[i];
105 for (np = nhpp->lh_first; np != 0; np = np->n_hash.le_next) {
107 printf("%s:%d:%d:%d:%d\n",np->n_name,vp->v_usecount,vp->v_holdcnt,
108 np->n_fid.f_id, np->n_fid.f_parent);
115 * Allocate new nwfsnode/vnode from given nwnode.
116 * Vnode referenced and not locked.
119 nwfs_allocvp(struct mount *mp, ncpfid fid, struct vnode **vpp) {
120 struct proc *p = curproc; /* XXX */
121 struct nwnode *np, *np2;
122 struct nwnode_hash_head *nhpp;
127 nhpp = NWNOHASH(fid);
129 for (np = nhpp->lh_first; np != 0; np = np->n_hash.le_next) {
131 if (mp != vp->v_mount || !NWCMPF(&fid, &np->n_fid))
133 if (vget(vp, LK_EXCLUSIVE, p))
139 /* lock list, or waiting in malloc can cause problems */
143 tsleep((caddr_t) &nwhashlock, PVM, "nwfsvp", 0);
149 * Do the MALLOC before the getnewvnode since doing so afterward
150 * might cause a bogus v_data pointer to get dereferenced
151 * elsewhere if MALLOC should block.
153 MALLOC(np, struct nwnode *, sizeof *np, M_NWNODE, M_WAITOK);
154 error = getnewvnode(VT_NWFS, mp, nwfs_vnodeop_p, &vp);
164 bzero(np,sizeof(*np));
167 np->n_mount = VFSTONWFS(mp);
169 for (np2 = nhpp->lh_first; np2 != 0; np2 = np->n_hash.le_next) {
170 if (mp != NWTOV(np2)->v_mount || !NWCMPF(&fid, &np2->n_fid))
179 LIST_INSERT_HEAD(nhpp, np, n_hash);
183 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, p);
189 nwfs_lookupnp(struct nwmount *nmp, ncpfid fid, struct nwnode **npp) {
191 struct nwnode_hash_head *nhpp;
193 nhpp = NWNOHASH(fid);
194 for (np = nhpp->lh_first; np != 0; np = np->n_hash.le_next) {
195 if (nmp != np->n_mount || !NWCMPF(&fid, &np->n_fid))
204 * Free nwnode, and give vnode back to system
208 struct vop_reclaim_args /* {
212 struct vnode *dvp = NULL, *vp = ap->a_vp;
213 struct nwnode *dnp, *np = VTONW(vp);
214 struct nwmount *nmp=VTONWFS(vp);
216 NCPVNDEBUG("%s,%d\n", np->n_name, vp->v_usecount);
217 if (np->n_refparent) {
219 if (nwfs_lookupnp(nmp, np->n_parent, &dnp) == 0) {
222 NCPVNDEBUG("%s: has no parent ?\n",np->n_name);
225 LIST_REMOVE(np, n_hash);
227 if (nmp->n_root == np) {
240 struct vop_inactive_args /* {
245 struct proc *p = ap->a_p;
246 struct ucred *cred = p->p_ucred;
247 struct vnode *vp = ap->a_vp;
248 struct nwnode *np = VTONW(vp);
251 NCPVNDEBUG("%s: %d\n", VTONW(vp)->n_name, vp->v_usecount);
253 error = nwfs_vinvalbuf(vp, V_SAVE, cred, p, 1);
254 error = ncp_close_file(NWFSTOCONN(VTONWFS(vp)), &np->n_fh, p, cred);
257 VOP_UNLOCK(vp, 0, p);
261 * routines to maintain vnode attributes cache
262 * nwfs_attr_cacheenter: unpack np.i to va structure
265 nwfs_attr_cacheenter(struct vnode *vp, struct nw_entry_info *fi) {
266 struct nwnode *np = VTONW(vp);
267 struct nwmount *nmp = VTONWFS(vp);
268 register struct vattr *va = &np->n_vattr;
270 va->va_type = vp->v_type; /* vnode type (for create) */
271 if (vp->v_type == VREG) {
272 if (va->va_size != fi->dataStreamSize) {
273 va->va_size = fi->dataStreamSize;
274 vnode_pager_setsize(vp, va->va_size);
276 va->va_mode = nmp->m.file_mode; /* files access mode and type */
277 } else if (vp->v_type == VDIR) {
278 va->va_size = 16384; /* should be a better way ... */
279 va->va_mode = nmp->m.dir_mode; /* files access mode and type */
282 np->n_size = va->va_size;
283 va->va_nlink = 1; /* number of references to file */
284 va->va_uid = nmp->m.uid; /* owner user id */
285 va->va_gid = nmp->m.gid; /* owner group id */
286 va->va_fsid = vp->v_mount->mnt_stat.f_fsid.val[0];
287 va->va_fileid = np->n_fid.f_id; /* file id */
288 if (va->va_fileid == 0)
289 va->va_fileid = NWFS_ROOT_INO;
290 va->va_blocksize=nmp->connh->nh_conn->buffer_size;/* blocksize preferred for i/o */
291 /* time of last modification */
292 ncp_dos2unixtime(fi->modifyDate, fi->modifyTime, 0, &va->va_mtime);
293 /* time of last access */
294 ncp_dos2unixtime(fi->lastAccessDate, 0, 0, &va->va_atime);
295 va->va_ctime = va->va_mtime; /* time file changed */
296 va->va_gen = VNOVAL; /* generation number of file */
297 va->va_flags = 0; /* flags defined for file */
298 va->va_rdev = VNOVAL; /* device the special file represents */
299 va->va_bytes = va->va_size; /* bytes of disk space held by file */
300 va->va_filerev = 0; /* file modification number */
301 va->va_vaflags = 0; /* operations flags */
303 if (np->n_mtime == 0) {
304 np->n_mtime = va->va_mtime.tv_sec;
306 np->n_atime = time_second;
311 nwfs_attr_cachelookup(struct vnode *vp, struct vattr *va) {
312 struct nwnode *np = VTONW(vp);
315 diff = time_second - np->n_atime;
316 if (diff > 2) { /* XXX should be configurable */