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
34 #include <sys/cdefs.h>
35 __FBSDID("$FreeBSD$");
38 * Functions that need to be different for different versions of BSD
39 * kernel should be kept here, along with any global storage specific
40 * to this BSD variant.
42 #include <fs/nfs/nfsport.h>
43 #include <sys/sysctl.h>
45 #include <vm/vm_object.h>
46 #include <vm/vm_page.h>
47 #include <vm/vm_param.h>
48 #include <vm/vm_map.h>
49 #include <vm/vm_kern.h>
50 #include <vm/vm_extern.h>
52 #include <vm/uma_int.h>
54 extern int nfscl_ticks;
55 extern int nfsrv_nfsuserd;
56 extern struct nfssockreq nfsrv_nfsuserdsock;
57 extern void (*nfsd_call_recall)(struct vnode *, int, struct ucred *,
59 extern int nfsrv_useacl;
60 struct mount nfsv4root_mnt;
61 int newnfs_numnfsd = 0;
62 struct nfsstats newnfsstats;
63 int nfs_numnfscbd = 0;
64 char nfsv4_callbackaddr[INET6_ADDRSTRLEN];
65 struct callout newnfsd_callout;
66 void (*nfsd_call_servertimer)(void) = NULL;
67 void (*ncl_call_invalcaches)(struct vnode *) = NULL;
69 static int nfs_realign_test;
70 static int nfs_realign_count;
72 SYSCTL_NODE(_vfs, OID_AUTO, newnfs, CTLFLAG_RW, 0, "New NFS filesystem");
73 SYSCTL_INT(_vfs_newnfs, OID_AUTO, newnfs_realign_test, CTLFLAG_RW, &nfs_realign_test, 0, "");
74 SYSCTL_INT(_vfs_newnfs, OID_AUTO, newnfs_realign_count, CTLFLAG_RW, &nfs_realign_count, 0, "");
75 SYSCTL_INT(_vfs_newnfs, OID_AUTO, nfs4acl_enable, CTLFLAG_RW, &nfsrv_useacl, 0, "");
76 SYSCTL_STRING(_vfs_newnfs, OID_AUTO, callback_addr, CTLFLAG_RW,
77 nfsv4_callbackaddr, sizeof(nfsv4_callbackaddr), "");
81 * (Here for FreeBSD, since they allocate storage.)
83 MALLOC_DEFINE(M_NEWNFSRVCACHE, "NFSD srvcache", "NFSD Server Request Cache");
84 MALLOC_DEFINE(M_NEWNFSDCLIENT, "NFSD V4client", "NFSD V4 Client Id");
85 MALLOC_DEFINE(M_NEWNFSDSTATE, "NFSD V4state",
86 "NFSD V4 State (Openowner, Open, Lockowner, Delegation");
87 MALLOC_DEFINE(M_NEWNFSDLOCK, "NFSD V4lock", "NFSD V4 byte range lock");
88 MALLOC_DEFINE(M_NEWNFSDLOCKFILE, "NFSD lckfile", "NFSD Open/Lock file");
89 MALLOC_DEFINE(M_NEWNFSSTRING, "NFSD string", "NFSD V4 long string");
90 MALLOC_DEFINE(M_NEWNFSUSERGROUP, "NFSD usrgroup", "NFSD V4 User/group map");
91 MALLOC_DEFINE(M_NEWNFSDREQ, "NFS req", "NFS request header");
92 MALLOC_DEFINE(M_NEWNFSFH, "NFS fh", "NFS file handle");
93 MALLOC_DEFINE(M_NEWNFSCLOWNER, "NFSCL owner", "NFSCL Open Owner");
94 MALLOC_DEFINE(M_NEWNFSCLOPEN, "NFSCL open", "NFSCL Open");
95 MALLOC_DEFINE(M_NEWNFSCLDELEG, "NFSCL deleg", "NFSCL Delegation");
96 MALLOC_DEFINE(M_NEWNFSCLCLIENT, "NFSCL client", "NFSCL Client");
97 MALLOC_DEFINE(M_NEWNFSCLLOCKOWNER, "NFSCL lckown", "NFSCL Lock Owner");
98 MALLOC_DEFINE(M_NEWNFSCLLOCK, "NFSCL lck", "NFSCL Lock");
99 MALLOC_DEFINE(M_NEWNFSV4NODE, "NEWNFSnode", "New nfs vnode");
100 MALLOC_DEFINE(M_NEWNFSDIRECTIO, "NEWdirectio", "New nfs Direct IO buffer");
101 MALLOC_DEFINE(M_NEWNFSDIROFF, "NFSCL diroffdiroff",
102 "New NFS directory offset data");
103 MALLOC_DEFINE(M_NEWNFSDROLLBACK, "NFSD rollback",
104 "New NFS local lock rollback");
107 * Definition of mutex locks.
108 * newnfsd_mtx is used in nfsrvd_nfsd() to protect the nfs socket list
109 * and assorted other nfsd structures.
110 * Giant is used to protect the nfsd list and count, which is just
111 * updated when nfsd's start/stop and is grabbed for nfsrvd_dorpc()
114 struct mtx newnfsd_mtx;
115 struct mtx nfs_sockl_mutex;
116 struct mtx nfs_state_mutex;
117 struct mtx nfs_nameid_mutex;
118 struct mtx nfs_req_mutex;
119 struct mtx nfs_slock_mutex;
121 /* local functions */
122 static int nfssvc_call(struct thread *, struct nfssvc_args *, struct ucred *);
124 #ifdef __NO_STRICT_ALIGNMENT
126 * These architectures don't need re-alignment, so just return.
129 newnfs_realign(struct mbuf **pm)
134 #else /* !__NO_STRICT_ALIGNMENT */
138 * Check for badly aligned mbuf data and realign by copying the unaligned
139 * portion of the data into a new mbuf chain and freeing the portions
140 * of the old chain that were replaced.
142 * We cannot simply realign the data within the existing mbuf chain
143 * because the underlying buffers may contain other rpc commands and
144 * we cannot afford to overwrite them.
146 * We would prefer to avoid this situation entirely. The situation does
147 * not occur with NFS/UDP and is supposed to only occassionally occur
148 * with TCP. Use vfs.nfs.realign_count and realign_test to check this.
152 newnfs_realign(struct mbuf **pm)
158 while ((m = *pm) != NULL) {
159 if ((m->m_len & 0x3) || (mtod(m, intptr_t) & 0x3)) {
161 * NB: we can't depend on m_pkthdr.len to help us
162 * decide what to do here. May not be worth doing
163 * the m_length calculation as m_copyback will
164 * expand the mbuf chain below as needed.
166 space = m_length(m, NULL);
167 if (space >= MINCLSIZE) {
168 /* NB: m_copyback handles space > MCLBYTES */
169 n = m_getcl(M_WAITOK, MT_DATA, 0);
171 n = m_get(M_WAITOK, MT_DATA);
175 * Align the remainder of the mbuf chain.
180 m_copyback(n, off, m->m_len, mtod(m, caddr_t));
192 #endif /* __NO_STRICT_ALIGNMENT */
196 nfsrv_object_create(struct vnode *vp, struct thread *td)
199 if (vp == NULL || vp->v_type != VREG)
201 (void) vfs_object_create(vp, td, td->td_ucred);
206 * Look up a file name. Basically just initialize stuff and call namei().
209 nfsrv_lookupfilename(struct nameidata *ndp, char *fname, NFSPROC_T *p)
213 NDINIT(ndp, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, fname, p);
216 NDFREE(ndp, NDF_ONLY_PNBUF);
222 * Copy NFS uid, gids to the cred structure.
225 newnfs_copycred(struct nfscred *nfscr, struct ucred *cr)
228 KASSERT(nfscr->nfsc_ngroups >= 0,
229 ("newnfs_copycred: negative nfsc_ngroups"));
230 cr->cr_uid = nfscr->nfsc_uid;
231 crsetgroups(cr, nfscr->nfsc_ngroups, nfscr->nfsc_groups);
235 * Map args from nfsmsleep() to msleep().
238 nfsmsleep(void *chan, void *mutex, int prio, const char *wmesg,
245 timeo = hz * ts->tv_sec;
246 nsecval = (u_int64_t)ts->tv_nsec;
247 nsecval = ((nsecval * ((u_int64_t)hz)) + 500000000) /
249 timeo += (int)nsecval;
253 error = msleep(chan, (struct mtx *)mutex, prio, wmesg, timeo);
258 * Get the file system info for the server. For now, just assume FFS.
261 nfsvno_getfs(struct nfsfsinfo *sip, int isdgram)
267 * There should be file system VFS OP(s) to get this information.
268 * For now, assume ufs.
271 pref = NFS_MAXDGRAMDATA;
274 sip->fs_rtmax = NFS_MAXDATA;
275 sip->fs_rtpref = pref;
276 sip->fs_rtmult = NFS_FABLKSIZE;
277 sip->fs_wtmax = NFS_MAXDATA;
278 sip->fs_wtpref = pref;
279 sip->fs_wtmult = NFS_FABLKSIZE;
280 sip->fs_dtpref = pref;
281 sip->fs_maxfilesize = 0xffffffffffffffffull;
282 sip->fs_timedelta.tv_sec = 0;
283 sip->fs_timedelta.tv_nsec = 1;
284 sip->fs_properties = (NFSV3FSINFO_LINK |
285 NFSV3FSINFO_SYMLINK | NFSV3FSINFO_HOMOGENEOUS |
286 NFSV3FSINFO_CANSETTIME);
289 /* Fake nfsrv_atroot. Just return 0 */
291 nfsrv_atroot(struct vnode *vp, long *retp)
298 * Set the credentials to refer to root.
299 * If only the various BSDen could agree on whether cr_gid is a separate
300 * field or cr_groups[0]...
303 newnfs_setroot(struct ucred *cred)
307 cred->cr_groups[0] = 0;
308 cred->cr_ngroups = 1;
312 * Get the client credential. Used for Renew and recovery.
318 struct thread *td = curthread;
320 cred = crdup(td->td_ucred);
321 newnfs_setroot(cred);
327 * Call the nfsd's timer function once/sec.
330 newnfs_timer(void *arg)
332 static time_t lasttime = 0;
334 * Call the server timer, if set up.
335 * The argument indicates if it is the next second and therefore
336 * leases should be checked.
338 if (lasttime != NFSD_MONOSEC) {
339 lasttime = NFSD_MONOSEC;
340 if (nfsd_call_servertimer != NULL)
341 (*nfsd_call_servertimer)();
343 callout_reset(&newnfsd_callout, nfscl_ticks, newnfs_timer, NULL);
348 * Sleep for a short period of time unless errval == NFSERR_GRACE, where
349 * the sleep should be for 5 seconds.
350 * Since lbolt doesn't exist in FreeBSD-CURRENT, just use a timeout on
351 * an event that never gets a wakeup. Only return EINTR or 0.
354 nfs_catnap(int prio, int errval, const char *wmesg)
356 static int non_event;
359 if (errval == NFSERR_GRACE)
360 ret = tsleep(&non_event, prio, wmesg, 5 * hz);
362 ret = tsleep(&non_event, prio, wmesg, 1);
369 * Get referral. For now, just fail.
372 nfsv4root_getreferral(struct vnode *vp, struct vnode *dvp, u_int32_t fileno)
379 nfssvc_nfscommon(struct thread *td, struct nfssvc_args *uap)
383 error = nfssvc_call(td, uap, td->td_ucred);
388 nfssvc_call(struct thread *p, struct nfssvc_args *uap, struct ucred *cred)
391 struct nfsd_idargs nid;
393 if (uap->flag & NFSSVC_IDNAME) {
394 error = copyin(uap->argp, (caddr_t)&nid, sizeof (nid));
397 error = nfssvc_idname(&nid);
399 } else if (uap->flag & NFSSVC_GETSTATS) {
400 error = copyout(&newnfsstats,
401 CAST_USER_ADDR_T(uap->argp), sizeof (newnfsstats));
403 } else if (uap->flag & NFSSVC_NFSUSERDPORT) {
406 error = copyin(uap->argp, (caddr_t)&sockport,
409 error = nfsrv_nfsuserdport(sockport, p);
410 } else if (uap->flag & NFSSVC_NFSUSERDDELPORT) {
411 nfsrv_nfsuserddelport();
418 * called by all three modevent routines, so that it gets things
419 * initialized soon enough.
422 newnfs_portinit(void)
424 static int inited = 0;
429 /* Initialize SMP locks used by both client and server. */
430 mtx_init(&newnfsd_mtx, "newnfsd_mtx", NULL, MTX_DEF);
431 mtx_init(&nfs_state_mutex, "nfs_state_mutex", NULL, MTX_DEF);
434 #ifdef NFS4_ACL_EXTATTR_NAME
436 * Determine if the file system supports NFSv4 ACLs.
437 * Return 1 if it does, 0 otherwise.
440 nfs_supportsnfsv4acls(struct mount *mp)
443 if (mp->mnt_stat.f_fstypename == NULL)
445 if (strcmp(mp->mnt_stat.f_fstypename, "ufs") == 0) {
448 } else if (strcmp(mp->mnt_stat.f_fstypename, "zfs") == 0) {
449 /* Always supports them */
454 #endif /* NFS4_ACL_EXTATTR_NAME */
456 extern int (*nfsd_call_nfscommon)(struct thread *, struct nfssvc_args *);
459 * Called once to initialize data structures...
462 nfscommon_modevent(module_t mod, int type, void *data)
465 static int loaded = 0;
472 mtx_init(&nfs_nameid_mutex, "nfs_nameid_mutex", NULL, MTX_DEF);
473 mtx_init(&nfs_sockl_mutex, "nfs_sockl_mutex", NULL, MTX_DEF);
474 mtx_init(&nfs_slock_mutex, "nfs_slock_mutex", NULL, MTX_DEF);
475 mtx_init(&nfs_req_mutex, "nfs_req_mutex", NULL, MTX_DEF);
476 mtx_init(&nfsrv_nfsuserdsock.nr_mtx, "nfsuserd", NULL,
478 callout_init(&newnfsd_callout, CALLOUT_MPSAFE);
480 nfsd_call_nfscommon = nfssvc_nfscommon;
485 if (newnfs_numnfsd != 0 || nfsrv_nfsuserd != 0 ||
486 nfs_numnfscbd != 0) {
491 nfsd_call_nfscommon = NULL;
492 callout_drain(&newnfsd_callout);
493 /* and get rid of the mutexes */
494 mtx_destroy(&nfs_nameid_mutex);
495 mtx_destroy(&newnfsd_mtx);
496 mtx_destroy(&nfs_state_mutex);
497 mtx_destroy(&nfs_sockl_mutex);
498 mtx_destroy(&nfs_slock_mutex);
499 mtx_destroy(&nfs_req_mutex);
500 mtx_destroy(&nfsrv_nfsuserdsock.nr_mtx);
509 static moduledata_t nfscommon_mod = {
514 DECLARE_MODULE(nfscommon, nfscommon_mod, SI_SUB_VFS, SI_ORDER_ANY);
516 /* So that loader and kldload(2) can find us, wherever we are.. */
517 MODULE_VERSION(nfscommon, 1);
518 MODULE_DEPEND(nfscommon, nfssvc, 1, 1, 1);
519 MODULE_DEPEND(nfscommon, krpc, 1, 1, 1);