2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
6 * Rick Macklem at The University of Guelph.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 4. Neither the name of the University nor the names of its 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 REGENTS 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 REGENTS 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 * from nfs_node.c 8.6 (Berkeley) 5/22/95
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
38 #include <sys/param.h>
39 #include <sys/systm.h>
41 #include <sys/malloc.h>
42 #include <sys/mount.h>
43 #include <sys/namei.h>
45 #include <sys/socket.h>
46 #include <sys/sysctl.h>
47 #include <sys/vnode.h>
51 #include <fs/nfs/nfsport.h>
52 #include <fs/nfsclient/nfsnode.h>
53 #include <fs/nfsclient/nfsmount.h>
54 #include <fs/nfsclient/nfs.h>
56 extern struct vop_vector newnfs_vnodeops;
57 extern struct buf_ops buf_ops_newnfs;
58 MALLOC_DECLARE(M_NEWNFSREQ);
60 uma_zone_t newnfsnode_zone;
61 vop_reclaim_t *ncl_reclaim_p = NULL;
67 newnfsnode_zone = uma_zcreate("NCLNODE", sizeof(struct nfsnode), NULL,
68 NULL, NULL, NULL, UMA_ALIGN_PTR, 0);
74 uma_zdestroy(newnfsnode_zone);
78 * ONLY USED FOR THE ROOT DIRECTORY. nfscl_nget() does the rest. If this
79 * function is going to be used to get Regular Files, code must be added
80 * to fill in the "struct nfsv4node".
81 * Look up a vnode/nfsnode by file handle.
82 * Callers must check for mount points!!
83 * In all cases, a pointer to a
84 * nfsnode structure is returned.
87 ncl_nget(struct mount *mntp, u_int8_t *fhp, int fhsize, struct nfsnode **npp)
89 struct thread *td = curthread; /* XXX */
101 hash = fnv_32_buf(fhp, fhsize, FNV1_32_INIT);
103 MALLOC(nfhp, struct nfsfh *, sizeof (struct nfsfh) + fhsize,
105 bcopy(fhp, &nfhp->nfh_fh[0], fhsize);
106 nfhp->nfh_len = fhsize;
107 error = vfs_hash_get(mntp, hash, LK_EXCLUSIVE,
108 td, &nvp, newnfs_vncmpf, nfhp);
118 * Allocate before getnewvnode since doing so afterward
119 * might cause a bogus v_data pointer to get dereferenced
120 * elsewhere if zalloc should block.
122 np = uma_zalloc(newnfsnode_zone, M_WAITOK | M_ZERO);
124 error = getnewvnode("newnfs", mntp, &newnfs_vnodeops, &nvp);
126 uma_zfree(newnfsnode_zone, np);
130 vp->v_bufobj.bo_ops = &buf_ops_newnfs;
134 * Initialize the mutex even if the vnode is going to be a loser.
135 * This simplifies the logic in reclaim, which can then unconditionally
136 * destroy the mutex (in the case of the loser, or if hash_insert
137 * happened to return an error no special casing is needed).
139 mtx_init(&np->n_mtx, "NEWNFSnode lock", NULL, MTX_DEF | MTX_DUPOK);
141 * NFS supports recursive and shared locking.
146 * Are we getting the root? If so, make sure the vnode flags
149 if ((fhsize == nmp->nm_fhsize) &&
150 !bcmp(fhp, nmp->nm_fh, fhsize)) {
151 if (vp->v_type == VNON)
153 vp->v_vflag |= VV_ROOT;
156 MALLOC(np->n_fhp, struct nfsfh *, sizeof (struct nfsfh) + fhsize,
158 bcopy(fhp, np->n_fhp->nfh_fh, fhsize);
159 np->n_fhp->nfh_len = fhsize;
160 lockmgr(vp->v_vnlock, LK_EXCLUSIVE, NULL);
161 error = insmntque(vp, mntp);
164 FREE((caddr_t)np->n_fhp, M_NFSFH);
165 mtx_destroy(&np->n_mtx);
166 uma_zfree(newnfsnode_zone, np);
169 error = vfs_hash_insert(vp, hash, LK_EXCLUSIVE,
170 td, &nvp, newnfs_vncmpf, np->n_fhp);
175 /* vfs_hash_insert() vput()'s the losing vnode */
184 ncl_inactive(struct vop_inactive_args *ap)
187 struct sillyrename *sp;
188 struct vnode *vp = ap->a_vp;
191 if (prtactive && vrefcnt(vp) != 0)
192 vprint("ncl_inactive: pushing active", vp);
194 if (NFS_ISV4(vp) && vp->v_type == VREG) {
196 * Since mmap()'d files do I/O after VOP_CLOSE(), the NFSv4
197 * Close operations are delayed until now. Any dirty buffers
198 * must be flushed before the close, so that the stateid is
199 * available for the writes.
201 if (nfscl_mustflush(vp))
202 (void) ncl_flush(vp, MNT_WAIT, NULL, ap->a_td, 1);
203 (void) nfsrpc_close(vp, 1, ap->a_td);
206 if (vp->v_type != VDIR) {
207 sp = np->n_sillyrename;
208 np->n_sillyrename = NULL;
212 (void) ncl_vinvalbuf(vp, 0, ap->a_td, 1);
214 * Remove the silly file that was rename'd earlier
216 ncl_removeit(sp, vp);
219 FREE((caddr_t)sp, M_NEWNFSREQ);
221 np->n_flag &= NMODIFIED;
226 * Reclaim an nfsnode so that it can be used for other purposes.
229 ncl_reclaim(struct vop_reclaim_args *ap)
231 struct vnode *vp = ap->a_vp;
232 struct nfsnode *np = VTONFS(vp);
233 struct nfsdmap *dp, *dp2;
235 if (prtactive && vrefcnt(vp) != 0)
236 vprint("ncl_reclaim: pushing active", vp);
239 * If the NLM is running, give it a chance to abort pending
246 * Destroy the vm object and flush associated pages.
248 vnode_destroy_vobject(vp);
253 * Call nfscl_reclaimnode() to save attributes in the delegation,
256 if (vp->v_type == VREG)
257 nfscl_reclaimnode(vp);
260 * Free up any directory cookie structures and
261 * large file handle structures that might be associated with
264 if (vp->v_type == VDIR) {
265 dp = LIST_FIRST(&np->n_cookies);
268 dp = LIST_NEXT(dp, ndm_list);
269 FREE((caddr_t)dp2, M_NFSDIROFF);
272 FREE((caddr_t)np->n_fhp, M_NFSFH);
273 if (np->n_v4 != NULL)
274 FREE((caddr_t)np->n_v4, M_NFSV4NODE);
275 mtx_destroy(&np->n_mtx);
276 uma_zfree(newnfsnode_zone, vp->v_data);
282 * Invalidate both the access and attribute caches for this vnode.
285 ncl_invalcaches(struct vnode *vp)
287 struct nfsnode *np = VTONFS(vp);
290 mtx_lock(&np->n_mtx);
291 for (i = 0; i < NFS_ACCESSCACHESIZE; i++)
292 np->n_accesscache[i].stamp = 0;
294 mtx_unlock(&np->n_mtx);