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", "NFSD V4 State (Openowner, Open, Lockowner, Delegation");
86 MALLOC_DEFINE(M_NEWNFSDLOCK, "NFSD V4lock", "NFSD V4 byte range lock");
87 MALLOC_DEFINE(M_NEWNFSDLOCKFILE, "NFSD lckfile", "NFSD Open/Lock file");
88 MALLOC_DEFINE(M_NEWNFSSTRING, "NFSD string", "NFSD V4 long string");
89 MALLOC_DEFINE(M_NEWNFSUSERGROUP, "NFSD usrgroup", "NFSD V4 User/group map");
90 MALLOC_DEFINE(M_NEWNFSDREQ, "NFS req", "NFS request header");
91 MALLOC_DEFINE(M_NEWNFSFH, "NFS fh", "NFS file handle");
92 MALLOC_DEFINE(M_NEWNFSCLOWNER, "NFSCL owner", "NFSCL Open Owner");
93 MALLOC_DEFINE(M_NEWNFSCLOPEN, "NFSCL open", "NFSCL Open");
94 MALLOC_DEFINE(M_NEWNFSCLDELEG, "NFSCL deleg", "NFSCL Delegation");
95 MALLOC_DEFINE(M_NEWNFSCLCLIENT, "NFSCL client", "NFSCL Client");
96 MALLOC_DEFINE(M_NEWNFSCLLOCKOWNER, "NFSCL lckown", "NFSCL Lock Owner");
97 MALLOC_DEFINE(M_NEWNFSCLLOCK, "NFSCL lck", "NFSCL Lock");
98 MALLOC_DEFINE(M_NEWNFSV4NODE, "NEWNFSnode", "New nfs vnode");
99 MALLOC_DEFINE(M_NEWNFSDIRECTIO, "NEWdirectio", "New nfs Direct IO buffer");
100 MALLOC_DEFINE(M_NEWNFSDIROFF, "Newnfscl_diroff", "New NFS directory offset data");
103 * Definition of mutex locks.
104 * newnfsd_mtx is used in nfsrvd_nfsd() to protect the nfs socket list
105 * and assorted other nfsd structures.
106 * Giant is used to protect the nfsd list and count, which is just
107 * updated when nfsd's start/stop and is grabbed for nfsrvd_dorpc()
110 struct mtx newnfsd_mtx;
111 struct mtx nfs_sockl_mutex;
112 struct mtx nfs_state_mutex;
113 struct mtx nfs_nameid_mutex;
114 struct mtx nfs_req_mutex;
115 struct mtx nfs_slock_mutex;
117 /* local functions */
118 static int nfssvc_call(struct thread *, struct nfssvc_args *, struct ucred *);
120 #if defined(__i386__)
122 * These architectures don't need re-alignment, so just return.
125 newnfs_realign(struct mbuf **pm)
134 * Check for badly aligned mbuf data and realign by copying the unaligned
135 * portion of the data into a new mbuf chain and freeing the portions
136 * of the old chain that were replaced.
138 * We cannot simply realign the data within the existing mbuf chain
139 * because the underlying buffers may contain other rpc commands and
140 * we cannot afford to overwrite them.
142 * We would prefer to avoid this situation entirely. The situation does
143 * not occur with NFS/UDP and is supposed to only occassionally occur
144 * with TCP. Use vfs.nfs.realign_count and realign_test to check this.
148 newnfs_realign(struct mbuf **pm)
154 while ((m = *pm) != NULL) {
155 if ((m->m_len & 0x3) || (mtod(m, intptr_t) & 0x3)) {
157 * NB: we can't depend on m_pkthdr.len to help us
158 * decide what to do here. May not be worth doing
159 * the m_length calculation as m_copyback will
160 * expand the mbuf chain below as needed.
162 space = m_length(m, NULL);
163 if (space >= MINCLSIZE) {
164 /* NB: m_copyback handles space > MCLBYTES */
165 n = m_getcl(M_WAITOK, MT_DATA, 0);
167 n = m_get(M_WAITOK, MT_DATA);
171 * Align the remainder of the mbuf chain.
176 m_copyback(n, off, m->m_len, mtod(m, caddr_t));
188 #endif /* !__i386__ */
192 nfsrv_object_create(struct vnode *vp, struct thread *td)
195 if (vp == NULL || vp->v_type != VREG)
197 (void) vfs_object_create(vp, td, td->td_ucred);
202 * Look up a file name. Basically just initialize stuff and call namei().
205 nfsrv_lookupfilename(struct nameidata *ndp, char *fname, NFSPROC_T *p)
209 NDINIT(ndp, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, fname, p);
212 NDFREE(ndp, NDF_ONLY_PNBUF);
218 * Copy NFS uid, gids to the cred structure.
221 newnfs_copycred(struct nfscred *nfscr, struct ucred *cr)
224 cr->cr_uid = nfscr->nfsc_uid;
225 crsetgroups(cr, nfscr->nfsc_ngroups, nfscr->nfsc_groups);
229 * Map args from nfsmsleep() to msleep().
232 nfsmsleep(void *chan, void *mutex, int prio, const char *wmesg,
239 timeo = hz * ts->tv_sec;
240 nsecval = (u_int64_t)ts->tv_nsec;
241 nsecval = ((nsecval * ((u_int64_t)hz)) + 500000000) /
243 timeo += (int)nsecval;
247 error = msleep(chan, (struct mtx *)mutex, prio, wmesg, timeo);
252 * Get the file system info for the server. For now, just assume FFS.
255 nfsvno_getfs(struct nfsfsinfo *sip, int isdgram)
261 * There should be file system VFS OP(s) to get this information.
262 * For now, assume ufs.
265 pref = NFS_MAXDGRAMDATA;
268 sip->fs_rtmax = NFS_MAXDATA;
269 sip->fs_rtpref = pref;
270 sip->fs_rtmult = NFS_FABLKSIZE;
271 sip->fs_wtmax = NFS_MAXDATA;
272 sip->fs_wtpref = pref;
273 sip->fs_wtmult = NFS_FABLKSIZE;
274 sip->fs_dtpref = pref;
275 sip->fs_maxfilesize = 0xffffffffffffffffull;
276 sip->fs_timedelta.tv_sec = 0;
277 sip->fs_timedelta.tv_nsec = 1;
278 sip->fs_properties = (NFSV3FSINFO_LINK |
279 NFSV3FSINFO_SYMLINK | NFSV3FSINFO_HOMOGENEOUS |
280 NFSV3FSINFO_CANSETTIME);
283 /* Fake nfsrv_atroot. Just return 0 */
285 nfsrv_atroot(struct vnode *vp, long *retp)
292 * Set the credentials to refer to root.
293 * If only the various BSDen could agree on whether cr_gid is a separate
294 * field or cr_groups[0]...
297 newnfs_setroot(struct ucred *cred)
301 cred->cr_groups[0] = 0;
302 cred->cr_ngroups = 1;
306 * Get the client credential. Used for Renew and recovery.
312 struct thread *td = curthread;
314 cred = crdup(td->td_ucred);
315 newnfs_setroot(cred);
321 * Call the nfsd's timer function once/sec.
324 newnfs_timer(void *arg)
326 static time_t lasttime = 0;
328 * Call the server timer, if set up.
329 * The argument indicates if it is the next second and therefore
330 * leases should be checked.
332 if (lasttime != NFSD_MONOSEC) {
333 lasttime = NFSD_MONOSEC;
334 if (nfsd_call_servertimer != NULL)
335 (*nfsd_call_servertimer)();
337 callout_reset(&newnfsd_callout, nfscl_ticks, newnfs_timer, NULL);
342 * sleep for a short period of time.
343 * Since lbolt doesn't exist in FreeBSD-CURRENT, just use a timeout on
344 * an event that never gets a wakeup. Only return EINTR or 0.
347 nfs_catnap(int prio, const char *wmesg)
349 static int non_event;
352 ret = tsleep(&non_event, prio, wmesg, 1);
359 * Get referral. For now, just fail.
362 nfsv4root_getreferral(struct vnode *vp, struct vnode *dvp, u_int32_t fileno)
369 nfssvc_nfscommon(struct thread *td, struct nfssvc_args *uap)
373 error = nfssvc_call(td, uap, td->td_ucred);
378 nfssvc_call(struct thread *p, struct nfssvc_args *uap, struct ucred *cred)
381 struct nfsd_idargs nid;
383 if (uap->flag & NFSSVC_IDNAME) {
384 error = copyin(uap->argp, (caddr_t)&nid, sizeof (nid));
387 error = nfssvc_idname(&nid);
389 } else if (uap->flag & NFSSVC_GETSTATS) {
390 error = copyout(&newnfsstats,
391 CAST_USER_ADDR_T(uap->argp), sizeof (newnfsstats));
393 } else if (uap->flag & NFSSVC_NFSUSERDPORT) {
396 error = copyin(uap->argp, (caddr_t)&sockport,
399 error = nfsrv_nfsuserdport(sockport, p);
400 } else if (uap->flag & NFSSVC_NFSUSERDDELPORT) {
401 nfsrv_nfsuserddelport();
408 * called by all three modevent routines, so that it gets things
409 * initialized soon enough.
412 newnfs_portinit(void)
414 static int inited = 0;
419 /* Initialize SMP locks used by both client and server. */
420 mtx_init(&newnfsd_mtx, "newnfsd_mtx", NULL, MTX_DEF);
421 mtx_init(&nfs_state_mutex, "nfs_state_mutex", NULL, MTX_DEF);
424 #ifdef NFS4_ACL_EXTATTR_NAME
426 * Determine if the file system supports NFSv4 ACLs.
427 * Return 1 if it does, 0 otherwise.
430 nfs_supportsnfsv4acls(struct mount *mp)
433 if (mp->mnt_stat.f_fstypename == NULL)
435 if (strcmp(mp->mnt_stat.f_fstypename, "ufs") == 0) {
438 } else if (strcmp(mp->mnt_stat.f_fstypename, "zfs") == 0) {
439 /* Always supports them */
444 #endif /* NFS4_ACL_EXTATTR_NAME */
446 extern int (*nfsd_call_nfscommon)(struct thread *, struct nfssvc_args *);
449 * Called once to initialize data structures...
452 nfscommon_modevent(module_t mod, int type, void *data)
455 static int loaded = 0;
462 mtx_init(&nfs_nameid_mutex, "nfs_nameid_mutex", NULL, MTX_DEF);
463 mtx_init(&nfs_sockl_mutex, "nfs_sockl_mutex", NULL, MTX_DEF);
464 mtx_init(&nfs_slock_mutex, "nfs_slock_mutex", NULL, MTX_DEF);
465 mtx_init(&nfs_req_mutex, "nfs_req_mutex", NULL, MTX_DEF);
466 mtx_init(&nfsrv_nfsuserdsock.nr_mtx, "nfsuserd", NULL,
468 callout_init(&newnfsd_callout, CALLOUT_MPSAFE);
470 nfsd_call_nfscommon = nfssvc_nfscommon;
475 if (newnfs_numnfsd != 0 || nfsrv_nfsuserd != 0 ||
476 nfs_numnfscbd != 0) {
481 nfsd_call_nfscommon = NULL;
482 callout_drain(&newnfsd_callout);
483 /* and get rid of the mutexes */
484 mtx_destroy(&nfs_nameid_mutex);
485 mtx_destroy(&newnfsd_mtx);
486 mtx_destroy(&nfs_state_mutex);
487 mtx_destroy(&nfs_sockl_mutex);
488 mtx_destroy(&nfs_slock_mutex);
489 mtx_destroy(&nfs_req_mutex);
490 mtx_destroy(&nfsrv_nfsuserdsock.nr_mtx);
499 static moduledata_t nfscommon_mod = {
504 DECLARE_MODULE(nfscommon, nfscommon_mod, SI_SUB_VFS, SI_ORDER_ANY);
506 /* So that loader and kldload(2) can find us, wherever we are.. */
507 MODULE_VERSION(nfscommon, 1);
508 MODULE_DEPEND(nfscommon, nfssvc, 1, 1, 1);
509 MODULE_DEPEND(nfscommon, krpc, 1, 1, 1);