1/*
2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Rick Macklem at The University of Guelph.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
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 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * @(#)nfs_syscalls.c 8.5 (Berkeley) 3/30/95
| 1/*
2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Rick Macklem at The University of Guelph.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
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 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * @(#)nfs_syscalls.c 8.5 (Berkeley) 3/30/95
|
37 * $Id: nfs_syscalls.c,v 1.22 1997/04/30 09:51:37 dfr Exp $
| 37 * $Id: nfs_syscalls.c,v 1.23 1997/05/10 16:59:36 dfr Exp $
|
38 */
39
40#include <sys/param.h>
41#include <sys/systm.h>
42#include <sys/sysproto.h>
43#include <sys/kernel.h>
44#include <sys/sysctl.h>
45#include <sys/file.h>
46#include <sys/filedesc.h>
47#include <sys/stat.h>
48#include <sys/vnode.h>
49#include <sys/mount.h>
50#include <sys/proc.h>
51#include <sys/uio.h>
52#include <sys/malloc.h>
53#include <sys/buf.h>
54#include <sys/mbuf.h>
55#include <sys/socket.h>
56#include <sys/socketvar.h>
57#include <sys/domain.h>
58#include <sys/protosw.h>
59#include <sys/namei.h>
60#include <sys/syslog.h>
61
62#include <netinet/in.h>
63#include <netinet/tcp.h>
64#ifdef ISO
65#include <netiso/iso.h>
66#endif
67#include <nfs/xdr_subs.h>
68#include <nfs/rpcv2.h>
69#include <nfs/nfsproto.h>
70#include <nfs/nfs.h>
71#include <nfs/nfsm_subs.h>
72#include <nfs/nfsrvcache.h>
73#include <nfs/nfsmount.h>
74#include <nfs/nfsnode.h>
75#include <nfs/nqnfs.h>
76#include <nfs/nfsrtt.h>
77
78/* Global defs. */
79extern int (*nfsrv3_procs[NFS_NPROCS]) __P((struct nfsrv_descript *nd,
80 struct nfssvc_sock *slp,
81 struct proc *procp,
82 struct mbuf **mreqp));
83extern int nfs_numasync;
84extern time_t nqnfsstarttime;
85extern int nqsrv_writeslack;
86extern int nfsrtton;
87extern struct nfsstats nfsstats;
88extern int nfsrvw_procrastinate;
89extern int nfsrvw_procrastinate_v3;
90struct nfssvc_sock *nfs_udpsock, *nfs_cltpsock;
91static int nuidhash_max = NFS_MAXUIDHASH;
92
93static void nfsrv_zapsock __P((struct nfssvc_sock *slp));
94static int nfssvc_iod __P((struct proc *));
95
96#define TRUE 1
97#define FALSE 0
98
99static int nfs_asyncdaemon[NFS_MAXASYNCDAEMON];
100
101#ifndef NFS_NOSERVER
102int nfsd_waiting = 0;
103static struct nfsdrt nfsdrt;
104static int nfs_numnfsd = 0;
105static int notstarted = 1;
106static int modify_flag = 0;
107static void nfsd_rt __P((int sotype, struct nfsrv_descript *nd,
108 int cacherep));
109static int nfssvc_addsock __P((struct file *, struct mbuf *,
110 struct proc *));
111static int nfssvc_nfsd __P((struct nfsd_srvargs *,caddr_t,struct proc *));
112
113static int nfs_privport = 0;
114SYSCTL_INT(_vfs_nfs, NFS_NFSPRIVPORT, nfs_privport, CTLFLAG_RW, &nfs_privport, 0, "");
115SYSCTL_INT(_vfs_nfs, OID_AUTO, gatherdelay, CTLFLAG_RW, &nfsrvw_procrastinate, 0, "");
116SYSCTL_INT(_vfs_nfs, OID_AUTO, gatherdelay_v3, CTLFLAG_RW, &nfsrvw_procrastinate_v3, 0, "");
117
118/*
119 * NFS server system calls
120 * getfh() lives here too, but maybe should move to kern/vfs_syscalls.c
121 */
122
123/*
124 * Get file handle system call
125 */
126#ifndef _SYS_SYSPROTO_H_
127struct getfh_args {
128 char *fname;
129 fhandle_t *fhp;
130};
131#endif
132int
133getfh(p, uap, retval)
134 struct proc *p;
135 register struct getfh_args *uap;
136 int *retval;
137{
138 register struct vnode *vp;
139 fhandle_t fh;
140 int error;
141 struct nameidata nd;
142
143 /*
144 * Must be super user
145 */
146 error = suser(p->p_ucred, &p->p_acflag);
147 if(error)
148 return (error);
149 NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->fname, p);
150 error = namei(&nd);
151 if (error)
152 return (error);
153 vp = nd.ni_vp;
154 bzero((caddr_t)&fh, sizeof(fh));
155 fh.fh_fsid = vp->v_mount->mnt_stat.f_fsid;
156 error = VFS_VPTOFH(vp, &fh.fh_fid);
157 vput(vp);
158 if (error)
159 return (error);
160 error = copyout((caddr_t)&fh, (caddr_t)uap->fhp, sizeof (fh));
161 return (error);
162}
163
164#endif /* NFS_NOSERVER */
165/*
166 * Nfs server psuedo system call for the nfsd's
167 * Based on the flag value it either:
168 * - adds a socket to the selection list
169 * - remains in the kernel as an nfsd
170 * - remains in the kernel as an nfsiod
171 */
172#ifndef _SYS_SYSPROTO_H_
173struct nfssvc_args {
174 int flag;
175 caddr_t argp;
176};
177#endif
178int
179nfssvc(p, uap, retval)
180 struct proc *p;
181 register struct nfssvc_args *uap;
182 int *retval;
183{
184#ifndef NFS_NOSERVER
185 struct nameidata nd;
186 struct file *fp;
187 struct mbuf *nam;
188 struct nfsd_args nfsdarg;
189 struct nfsd_srvargs nfsd_srvargs, *nsd = &nfsd_srvargs;
190 struct nfsd_cargs ncd;
191 struct nfsd *nfsd;
192 struct nfssvc_sock *slp;
193 struct nfsuid *nuidp;
194 struct nfsmount *nmp;
195#endif /* NFS_NOSERVER */
196 int error;
197
198 /*
199 * Must be super user
200 */
201 error = suser(p->p_ucred, &p->p_acflag);
202 if(error)
203 return (error);
204 while (nfssvc_sockhead_flag & SLP_INIT) {
205 nfssvc_sockhead_flag |= SLP_WANTINIT;
206 (void) tsleep((caddr_t)&nfssvc_sockhead, PSOCK, "nfsd init", 0);
207 }
208 if (uap->flag & NFSSVC_BIOD)
209 error = nfssvc_iod(p);
210#ifdef NFS_NOSERVER
211 else
212 error = ENXIO;
213#else /* !NFS_NOSERVER */
214 else if (uap->flag & NFSSVC_MNTD) {
215 error = copyin(uap->argp, (caddr_t)&ncd, sizeof (ncd));
216 if (error)
217 return (error);
218 NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE,
219 ncd.ncd_dirp, p);
220 error = namei(&nd);
221 if (error)
222 return (error);
223 if ((nd.ni_vp->v_flag & VROOT) == 0)
224 error = EINVAL;
225 nmp = VFSTONFS(nd.ni_vp->v_mount);
226 vput(nd.ni_vp);
227 if (error)
228 return (error);
229 if ((nmp->nm_flag & NFSMNT_MNTD) &&
230 (uap->flag & NFSSVC_GOTAUTH) == 0)
231 return (0);
232 nmp->nm_flag |= NFSMNT_MNTD;
233 error = nqnfs_clientd(nmp, p->p_ucred, &ncd, uap->flag,
234 uap->argp, p);
235 } else if (uap->flag & NFSSVC_ADDSOCK) {
236 error = copyin(uap->argp, (caddr_t)&nfsdarg, sizeof(nfsdarg));
237 if (error)
238 return (error);
239 error = getsock(p->p_fd, nfsdarg.sock, &fp);
240 if (error)
241 return (error);
242 /*
243 * Get the client address for connected sockets.
244 */
245 if (nfsdarg.name == NULL || nfsdarg.namelen == 0)
246 nam = (struct mbuf *)0;
247 else {
248 error = sockargs(&nam, nfsdarg.name, nfsdarg.namelen,
249 MT_SONAME);
250 if (error)
251 return (error);
252 }
253 error = nfssvc_addsock(fp, nam, p);
254 } else {
255 error = copyin(uap->argp, (caddr_t)nsd, sizeof (*nsd));
256 if (error)
257 return (error);
258 if ((uap->flag & NFSSVC_AUTHIN) && ((nfsd = nsd->nsd_nfsd)) &&
259 (nfsd->nfsd_slp->ns_flag & SLP_VALID)) {
260 slp = nfsd->nfsd_slp;
261
262 /*
263 * First check to see if another nfsd has already
264 * added this credential.
265 */
266 for (nuidp = NUIDHASH(slp,nsd->nsd_cr.cr_uid)->lh_first;
267 nuidp != 0; nuidp = nuidp->nu_hash.le_next) {
268 if (nuidp->nu_cr.cr_uid == nsd->nsd_cr.cr_uid &&
269 (!nfsd->nfsd_nd->nd_nam2 ||
270 netaddr_match(NU_NETFAM(nuidp),
271 &nuidp->nu_haddr, nfsd->nfsd_nd->nd_nam2)))
272 break;
273 }
274 if (nuidp) {
275 nfsrv_setcred(&nuidp->nu_cr,&nfsd->nfsd_nd->nd_cr);
276 nfsd->nfsd_nd->nd_flag |= ND_KERBFULL;
277 } else {
278 /*
279 * Nope, so we will.
280 */
281 if (slp->ns_numuids < nuidhash_max) {
282 slp->ns_numuids++;
283 nuidp = (struct nfsuid *)
284 malloc(sizeof (struct nfsuid), M_NFSUID,
285 M_WAITOK);
286 } else
287 nuidp = (struct nfsuid *)0;
288 if ((slp->ns_flag & SLP_VALID) == 0) {
289 if (nuidp)
290 free((caddr_t)nuidp, M_NFSUID);
291 } else {
292 if (nuidp == (struct nfsuid *)0) {
293 nuidp = slp->ns_uidlruhead.tqh_first;
294 LIST_REMOVE(nuidp, nu_hash);
295 TAILQ_REMOVE(&slp->ns_uidlruhead, nuidp,
296 nu_lru);
297 if (nuidp->nu_flag & NU_NAM)
298 m_freem(nuidp->nu_nam);
299 }
300 nuidp->nu_flag = 0;
301 nuidp->nu_cr = nsd->nsd_cr;
302 if (nuidp->nu_cr.cr_ngroups > NGROUPS)
303 nuidp->nu_cr.cr_ngroups = NGROUPS;
304 nuidp->nu_cr.cr_ref = 1;
305 nuidp->nu_timestamp = nsd->nsd_timestamp;
306 nuidp->nu_expire = time.tv_sec + nsd->nsd_ttl;
307 /*
308 * and save the session key in nu_key.
309 */
310 bcopy(nsd->nsd_key, nuidp->nu_key,
311 sizeof (nsd->nsd_key));
312 if (nfsd->nfsd_nd->nd_nam2) {
313 struct sockaddr_in *saddr;
314
315 saddr = mtod(nfsd->nfsd_nd->nd_nam2,
316 struct sockaddr_in *);
317 switch (saddr->sin_family) {
318 case AF_INET:
319 nuidp->nu_flag |= NU_INETADDR;
320 nuidp->nu_inetaddr =
321 saddr->sin_addr.s_addr;
322 break;
323 case AF_ISO:
324 default:
325 nuidp->nu_flag |= NU_NAM;
326 nuidp->nu_nam = m_copym(
327 nfsd->nfsd_nd->nd_nam2, 0,
328 M_COPYALL, M_WAIT);
329 break;
330 };
331 }
332 TAILQ_INSERT_TAIL(&slp->ns_uidlruhead, nuidp,
333 nu_lru);
334 LIST_INSERT_HEAD(NUIDHASH(slp, nsd->nsd_uid),
335 nuidp, nu_hash);
336 nfsrv_setcred(&nuidp->nu_cr,
337 &nfsd->nfsd_nd->nd_cr);
338 nfsd->nfsd_nd->nd_flag |= ND_KERBFULL;
339 }
340 }
341 }
342 if ((uap->flag & NFSSVC_AUTHINFAIL) && (nfsd = nsd->nsd_nfsd))
343 nfsd->nfsd_flag |= NFSD_AUTHFAIL;
344 error = nfssvc_nfsd(nsd, uap->argp, p);
345 }
346#endif /* NFS_NOSERVER */
347 if (error == EINTR || error == ERESTART)
348 error = 0;
349 return (error);
350}
351
352#ifndef NFS_NOSERVER
353/*
354 * Adds a socket to the list for servicing by nfsds.
355 */
356static int
357nfssvc_addsock(fp, mynam, p)
358 struct file *fp;
359 struct mbuf *mynam;
360 struct proc *p;
361{
362 register struct mbuf *m;
363 register int siz;
364 register struct nfssvc_sock *slp;
365 register struct socket *so;
366 struct nfssvc_sock *tslp;
367 int error, s;
368
369 so = (struct socket *)fp->f_data;
370 tslp = (struct nfssvc_sock *)0;
371 /*
372 * Add it to the list, as required.
373 */
374 if (so->so_proto->pr_protocol == IPPROTO_UDP) {
375 tslp = nfs_udpsock;
376 if (tslp->ns_flag & SLP_VALID) {
377 m_freem(mynam);
378 return (EPERM);
379 }
380#ifdef ISO
381 } else if (so->so_proto->pr_protocol == ISOPROTO_CLTP) {
382 tslp = nfs_cltpsock;
383 if (tslp->ns_flag & SLP_VALID) {
384 m_freem(mynam);
385 return (EPERM);
386 }
387#endif /* ISO */
388 }
389 if (so->so_type == SOCK_STREAM)
390 siz = NFS_MAXPACKET + sizeof (u_long);
391 else
392 siz = NFS_MAXPACKET;
393 error = soreserve(so, siz, siz);
394 if (error) {
395 m_freem(mynam);
396 return (error);
397 }
398
399 /*
400 * Set protocol specific options { for now TCP only } and
401 * reserve some space. For datagram sockets, this can get called
402 * repeatedly for the same socket, but that isn't harmful.
403 */
404 if (so->so_type == SOCK_STREAM) {
405 MGET(m, M_WAIT, MT_SOOPTS);
406 *mtod(m, int *) = 1;
407 m->m_len = sizeof(int);
408 sosetopt(so, SOL_SOCKET, SO_KEEPALIVE, m, p);
409 }
410 if (so->so_proto->pr_domain->dom_family == AF_INET &&
411 so->so_proto->pr_protocol == IPPROTO_TCP) {
412 MGET(m, M_WAIT, MT_SOOPTS);
413 *mtod(m, int *) = 1;
414 m->m_len = sizeof(int);
415 sosetopt(so, IPPROTO_TCP, TCP_NODELAY, m, p);
416 }
417 so->so_rcv.sb_flags &= ~SB_NOINTR;
418 so->so_rcv.sb_timeo = 0;
419 so->so_snd.sb_flags &= ~SB_NOINTR;
420 so->so_snd.sb_timeo = 0;
421 if (tslp)
422 slp = tslp;
423 else {
424 slp = (struct nfssvc_sock *)
425 malloc(sizeof (struct nfssvc_sock), M_NFSSVC, M_WAITOK);
426 bzero((caddr_t)slp, sizeof (struct nfssvc_sock));
| 38 */
39
40#include <sys/param.h>
41#include <sys/systm.h>
42#include <sys/sysproto.h>
43#include <sys/kernel.h>
44#include <sys/sysctl.h>
45#include <sys/file.h>
46#include <sys/filedesc.h>
47#include <sys/stat.h>
48#include <sys/vnode.h>
49#include <sys/mount.h>
50#include <sys/proc.h>
51#include <sys/uio.h>
52#include <sys/malloc.h>
53#include <sys/buf.h>
54#include <sys/mbuf.h>
55#include <sys/socket.h>
56#include <sys/socketvar.h>
57#include <sys/domain.h>
58#include <sys/protosw.h>
59#include <sys/namei.h>
60#include <sys/syslog.h>
61
62#include <netinet/in.h>
63#include <netinet/tcp.h>
64#ifdef ISO
65#include <netiso/iso.h>
66#endif
67#include <nfs/xdr_subs.h>
68#include <nfs/rpcv2.h>
69#include <nfs/nfsproto.h>
70#include <nfs/nfs.h>
71#include <nfs/nfsm_subs.h>
72#include <nfs/nfsrvcache.h>
73#include <nfs/nfsmount.h>
74#include <nfs/nfsnode.h>
75#include <nfs/nqnfs.h>
76#include <nfs/nfsrtt.h>
77
78/* Global defs. */
79extern int (*nfsrv3_procs[NFS_NPROCS]) __P((struct nfsrv_descript *nd,
80 struct nfssvc_sock *slp,
81 struct proc *procp,
82 struct mbuf **mreqp));
83extern int nfs_numasync;
84extern time_t nqnfsstarttime;
85extern int nqsrv_writeslack;
86extern int nfsrtton;
87extern struct nfsstats nfsstats;
88extern int nfsrvw_procrastinate;
89extern int nfsrvw_procrastinate_v3;
90struct nfssvc_sock *nfs_udpsock, *nfs_cltpsock;
91static int nuidhash_max = NFS_MAXUIDHASH;
92
93static void nfsrv_zapsock __P((struct nfssvc_sock *slp));
94static int nfssvc_iod __P((struct proc *));
95
96#define TRUE 1
97#define FALSE 0
98
99static int nfs_asyncdaemon[NFS_MAXASYNCDAEMON];
100
101#ifndef NFS_NOSERVER
102int nfsd_waiting = 0;
103static struct nfsdrt nfsdrt;
104static int nfs_numnfsd = 0;
105static int notstarted = 1;
106static int modify_flag = 0;
107static void nfsd_rt __P((int sotype, struct nfsrv_descript *nd,
108 int cacherep));
109static int nfssvc_addsock __P((struct file *, struct mbuf *,
110 struct proc *));
111static int nfssvc_nfsd __P((struct nfsd_srvargs *,caddr_t,struct proc *));
112
113static int nfs_privport = 0;
114SYSCTL_INT(_vfs_nfs, NFS_NFSPRIVPORT, nfs_privport, CTLFLAG_RW, &nfs_privport, 0, "");
115SYSCTL_INT(_vfs_nfs, OID_AUTO, gatherdelay, CTLFLAG_RW, &nfsrvw_procrastinate, 0, "");
116SYSCTL_INT(_vfs_nfs, OID_AUTO, gatherdelay_v3, CTLFLAG_RW, &nfsrvw_procrastinate_v3, 0, "");
117
118/*
119 * NFS server system calls
120 * getfh() lives here too, but maybe should move to kern/vfs_syscalls.c
121 */
122
123/*
124 * Get file handle system call
125 */
126#ifndef _SYS_SYSPROTO_H_
127struct getfh_args {
128 char *fname;
129 fhandle_t *fhp;
130};
131#endif
132int
133getfh(p, uap, retval)
134 struct proc *p;
135 register struct getfh_args *uap;
136 int *retval;
137{
138 register struct vnode *vp;
139 fhandle_t fh;
140 int error;
141 struct nameidata nd;
142
143 /*
144 * Must be super user
145 */
146 error = suser(p->p_ucred, &p->p_acflag);
147 if(error)
148 return (error);
149 NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE, uap->fname, p);
150 error = namei(&nd);
151 if (error)
152 return (error);
153 vp = nd.ni_vp;
154 bzero((caddr_t)&fh, sizeof(fh));
155 fh.fh_fsid = vp->v_mount->mnt_stat.f_fsid;
156 error = VFS_VPTOFH(vp, &fh.fh_fid);
157 vput(vp);
158 if (error)
159 return (error);
160 error = copyout((caddr_t)&fh, (caddr_t)uap->fhp, sizeof (fh));
161 return (error);
162}
163
164#endif /* NFS_NOSERVER */
165/*
166 * Nfs server psuedo system call for the nfsd's
167 * Based on the flag value it either:
168 * - adds a socket to the selection list
169 * - remains in the kernel as an nfsd
170 * - remains in the kernel as an nfsiod
171 */
172#ifndef _SYS_SYSPROTO_H_
173struct nfssvc_args {
174 int flag;
175 caddr_t argp;
176};
177#endif
178int
179nfssvc(p, uap, retval)
180 struct proc *p;
181 register struct nfssvc_args *uap;
182 int *retval;
183{
184#ifndef NFS_NOSERVER
185 struct nameidata nd;
186 struct file *fp;
187 struct mbuf *nam;
188 struct nfsd_args nfsdarg;
189 struct nfsd_srvargs nfsd_srvargs, *nsd = &nfsd_srvargs;
190 struct nfsd_cargs ncd;
191 struct nfsd *nfsd;
192 struct nfssvc_sock *slp;
193 struct nfsuid *nuidp;
194 struct nfsmount *nmp;
195#endif /* NFS_NOSERVER */
196 int error;
197
198 /*
199 * Must be super user
200 */
201 error = suser(p->p_ucred, &p->p_acflag);
202 if(error)
203 return (error);
204 while (nfssvc_sockhead_flag & SLP_INIT) {
205 nfssvc_sockhead_flag |= SLP_WANTINIT;
206 (void) tsleep((caddr_t)&nfssvc_sockhead, PSOCK, "nfsd init", 0);
207 }
208 if (uap->flag & NFSSVC_BIOD)
209 error = nfssvc_iod(p);
210#ifdef NFS_NOSERVER
211 else
212 error = ENXIO;
213#else /* !NFS_NOSERVER */
214 else if (uap->flag & NFSSVC_MNTD) {
215 error = copyin(uap->argp, (caddr_t)&ncd, sizeof (ncd));
216 if (error)
217 return (error);
218 NDINIT(&nd, LOOKUP, FOLLOW | LOCKLEAF, UIO_USERSPACE,
219 ncd.ncd_dirp, p);
220 error = namei(&nd);
221 if (error)
222 return (error);
223 if ((nd.ni_vp->v_flag & VROOT) == 0)
224 error = EINVAL;
225 nmp = VFSTONFS(nd.ni_vp->v_mount);
226 vput(nd.ni_vp);
227 if (error)
228 return (error);
229 if ((nmp->nm_flag & NFSMNT_MNTD) &&
230 (uap->flag & NFSSVC_GOTAUTH) == 0)
231 return (0);
232 nmp->nm_flag |= NFSMNT_MNTD;
233 error = nqnfs_clientd(nmp, p->p_ucred, &ncd, uap->flag,
234 uap->argp, p);
235 } else if (uap->flag & NFSSVC_ADDSOCK) {
236 error = copyin(uap->argp, (caddr_t)&nfsdarg, sizeof(nfsdarg));
237 if (error)
238 return (error);
239 error = getsock(p->p_fd, nfsdarg.sock, &fp);
240 if (error)
241 return (error);
242 /*
243 * Get the client address for connected sockets.
244 */
245 if (nfsdarg.name == NULL || nfsdarg.namelen == 0)
246 nam = (struct mbuf *)0;
247 else {
248 error = sockargs(&nam, nfsdarg.name, nfsdarg.namelen,
249 MT_SONAME);
250 if (error)
251 return (error);
252 }
253 error = nfssvc_addsock(fp, nam, p);
254 } else {
255 error = copyin(uap->argp, (caddr_t)nsd, sizeof (*nsd));
256 if (error)
257 return (error);
258 if ((uap->flag & NFSSVC_AUTHIN) && ((nfsd = nsd->nsd_nfsd)) &&
259 (nfsd->nfsd_slp->ns_flag & SLP_VALID)) {
260 slp = nfsd->nfsd_slp;
261
262 /*
263 * First check to see if another nfsd has already
264 * added this credential.
265 */
266 for (nuidp = NUIDHASH(slp,nsd->nsd_cr.cr_uid)->lh_first;
267 nuidp != 0; nuidp = nuidp->nu_hash.le_next) {
268 if (nuidp->nu_cr.cr_uid == nsd->nsd_cr.cr_uid &&
269 (!nfsd->nfsd_nd->nd_nam2 ||
270 netaddr_match(NU_NETFAM(nuidp),
271 &nuidp->nu_haddr, nfsd->nfsd_nd->nd_nam2)))
272 break;
273 }
274 if (nuidp) {
275 nfsrv_setcred(&nuidp->nu_cr,&nfsd->nfsd_nd->nd_cr);
276 nfsd->nfsd_nd->nd_flag |= ND_KERBFULL;
277 } else {
278 /*
279 * Nope, so we will.
280 */
281 if (slp->ns_numuids < nuidhash_max) {
282 slp->ns_numuids++;
283 nuidp = (struct nfsuid *)
284 malloc(sizeof (struct nfsuid), M_NFSUID,
285 M_WAITOK);
286 } else
287 nuidp = (struct nfsuid *)0;
288 if ((slp->ns_flag & SLP_VALID) == 0) {
289 if (nuidp)
290 free((caddr_t)nuidp, M_NFSUID);
291 } else {
292 if (nuidp == (struct nfsuid *)0) {
293 nuidp = slp->ns_uidlruhead.tqh_first;
294 LIST_REMOVE(nuidp, nu_hash);
295 TAILQ_REMOVE(&slp->ns_uidlruhead, nuidp,
296 nu_lru);
297 if (nuidp->nu_flag & NU_NAM)
298 m_freem(nuidp->nu_nam);
299 }
300 nuidp->nu_flag = 0;
301 nuidp->nu_cr = nsd->nsd_cr;
302 if (nuidp->nu_cr.cr_ngroups > NGROUPS)
303 nuidp->nu_cr.cr_ngroups = NGROUPS;
304 nuidp->nu_cr.cr_ref = 1;
305 nuidp->nu_timestamp = nsd->nsd_timestamp;
306 nuidp->nu_expire = time.tv_sec + nsd->nsd_ttl;
307 /*
308 * and save the session key in nu_key.
309 */
310 bcopy(nsd->nsd_key, nuidp->nu_key,
311 sizeof (nsd->nsd_key));
312 if (nfsd->nfsd_nd->nd_nam2) {
313 struct sockaddr_in *saddr;
314
315 saddr = mtod(nfsd->nfsd_nd->nd_nam2,
316 struct sockaddr_in *);
317 switch (saddr->sin_family) {
318 case AF_INET:
319 nuidp->nu_flag |= NU_INETADDR;
320 nuidp->nu_inetaddr =
321 saddr->sin_addr.s_addr;
322 break;
323 case AF_ISO:
324 default:
325 nuidp->nu_flag |= NU_NAM;
326 nuidp->nu_nam = m_copym(
327 nfsd->nfsd_nd->nd_nam2, 0,
328 M_COPYALL, M_WAIT);
329 break;
330 };
331 }
332 TAILQ_INSERT_TAIL(&slp->ns_uidlruhead, nuidp,
333 nu_lru);
334 LIST_INSERT_HEAD(NUIDHASH(slp, nsd->nsd_uid),
335 nuidp, nu_hash);
336 nfsrv_setcred(&nuidp->nu_cr,
337 &nfsd->nfsd_nd->nd_cr);
338 nfsd->nfsd_nd->nd_flag |= ND_KERBFULL;
339 }
340 }
341 }
342 if ((uap->flag & NFSSVC_AUTHINFAIL) && (nfsd = nsd->nsd_nfsd))
343 nfsd->nfsd_flag |= NFSD_AUTHFAIL;
344 error = nfssvc_nfsd(nsd, uap->argp, p);
345 }
346#endif /* NFS_NOSERVER */
347 if (error == EINTR || error == ERESTART)
348 error = 0;
349 return (error);
350}
351
352#ifndef NFS_NOSERVER
353/*
354 * Adds a socket to the list for servicing by nfsds.
355 */
356static int
357nfssvc_addsock(fp, mynam, p)
358 struct file *fp;
359 struct mbuf *mynam;
360 struct proc *p;
361{
362 register struct mbuf *m;
363 register int siz;
364 register struct nfssvc_sock *slp;
365 register struct socket *so;
366 struct nfssvc_sock *tslp;
367 int error, s;
368
369 so = (struct socket *)fp->f_data;
370 tslp = (struct nfssvc_sock *)0;
371 /*
372 * Add it to the list, as required.
373 */
374 if (so->so_proto->pr_protocol == IPPROTO_UDP) {
375 tslp = nfs_udpsock;
376 if (tslp->ns_flag & SLP_VALID) {
377 m_freem(mynam);
378 return (EPERM);
379 }
380#ifdef ISO
381 } else if (so->so_proto->pr_protocol == ISOPROTO_CLTP) {
382 tslp = nfs_cltpsock;
383 if (tslp->ns_flag & SLP_VALID) {
384 m_freem(mynam);
385 return (EPERM);
386 }
387#endif /* ISO */
388 }
389 if (so->so_type == SOCK_STREAM)
390 siz = NFS_MAXPACKET + sizeof (u_long);
391 else
392 siz = NFS_MAXPACKET;
393 error = soreserve(so, siz, siz);
394 if (error) {
395 m_freem(mynam);
396 return (error);
397 }
398
399 /*
400 * Set protocol specific options { for now TCP only } and
401 * reserve some space. For datagram sockets, this can get called
402 * repeatedly for the same socket, but that isn't harmful.
403 */
404 if (so->so_type == SOCK_STREAM) {
405 MGET(m, M_WAIT, MT_SOOPTS);
406 *mtod(m, int *) = 1;
407 m->m_len = sizeof(int);
408 sosetopt(so, SOL_SOCKET, SO_KEEPALIVE, m, p);
409 }
410 if (so->so_proto->pr_domain->dom_family == AF_INET &&
411 so->so_proto->pr_protocol == IPPROTO_TCP) {
412 MGET(m, M_WAIT, MT_SOOPTS);
413 *mtod(m, int *) = 1;
414 m->m_len = sizeof(int);
415 sosetopt(so, IPPROTO_TCP, TCP_NODELAY, m, p);
416 }
417 so->so_rcv.sb_flags &= ~SB_NOINTR;
418 so->so_rcv.sb_timeo = 0;
419 so->so_snd.sb_flags &= ~SB_NOINTR;
420 so->so_snd.sb_timeo = 0;
421 if (tslp)
422 slp = tslp;
423 else {
424 slp = (struct nfssvc_sock *)
425 malloc(sizeof (struct nfssvc_sock), M_NFSSVC, M_WAITOK);
426 bzero((caddr_t)slp, sizeof (struct nfssvc_sock));
|
| 427 STAILQ_INIT(&slp->ns_rec);
|
427 TAILQ_INIT(&slp->ns_uidlruhead);
428 TAILQ_INSERT_TAIL(&nfssvc_sockhead, slp, ns_chain);
429 }
430 slp->ns_so = so;
431 slp->ns_nam = mynam;
432 fp->f_count++;
433 slp->ns_fp = fp;
434 s = splnet();
435 so->so_upcallarg = (caddr_t)slp;
436 so->so_upcall = nfsrv_rcv;
437 slp->ns_flag = (SLP_VALID | SLP_NEEDQ);
438 nfsrv_wakenfsd(slp);
439 splx(s);
440 return (0);
441}
442
443/*
444 * Called by nfssvc() for nfsds. Just loops around servicing rpc requests
445 * until it is killed by a signal.
446 */
447static int
448nfssvc_nfsd(nsd, argp, p)
449 struct nfsd_srvargs *nsd;
450 caddr_t argp;
451 struct proc *p;
452{
453 register struct mbuf *m;
454 register int siz;
455 register struct nfssvc_sock *slp;
456 register struct socket *so;
457 register int *solockp;
458 struct nfsd *nfsd = nsd->nsd_nfsd;
459 struct nfsrv_descript *nd = NULL;
460 struct mbuf *mreq;
461 int error = 0, cacherep, s, sotype, writes_todo;
462 int procrastinate;
463 u_quad_t cur_usec;
464
465#ifndef nolint
466 cacherep = RC_DOIT;
467 writes_todo = 0;
468#endif
469 s = splnet();
470 if (nfsd == (struct nfsd *)0) {
471 nsd->nsd_nfsd = nfsd = (struct nfsd *)
472 malloc(sizeof (struct nfsd), M_NFSD, M_WAITOK);
473 bzero((caddr_t)nfsd, sizeof (struct nfsd));
474 nfsd->nfsd_procp = p;
475 TAILQ_INSERT_TAIL(&nfsd_head, nfsd, nfsd_chain);
476 nfs_numnfsd++;
477 }
478 /*
479 * Loop getting rpc requests until SIGKILL.
480 */
481 for (;;) {
482 if ((nfsd->nfsd_flag & NFSD_REQINPROG) == 0) {
483 while (nfsd->nfsd_slp == (struct nfssvc_sock *)0 &&
484 (nfsd_head_flag & NFSD_CHECKSLP) == 0) {
485 nfsd->nfsd_flag |= NFSD_WAITING;
486 nfsd_waiting++;
487 error = tsleep((caddr_t)nfsd, PSOCK | PCATCH,
488 "nfsd", 0);
489 nfsd_waiting--;
490 if (error)
491 goto done;
492 }
493 if (nfsd->nfsd_slp == (struct nfssvc_sock *)0 &&
494 (nfsd_head_flag & NFSD_CHECKSLP) != 0) {
495 for (slp = nfssvc_sockhead.tqh_first; slp != 0;
496 slp = slp->ns_chain.tqe_next) {
497 if ((slp->ns_flag & (SLP_VALID | SLP_DOREC))
498 == (SLP_VALID | SLP_DOREC)) {
499 slp->ns_flag &= ~SLP_DOREC;
500 slp->ns_sref++;
501 nfsd->nfsd_slp = slp;
502 break;
503 }
504 }
505 if (slp == 0)
506 nfsd_head_flag &= ~NFSD_CHECKSLP;
507 }
508 if ((slp = nfsd->nfsd_slp) == (struct nfssvc_sock *)0)
509 continue;
510 if (slp->ns_flag & SLP_VALID) {
511 if (slp->ns_flag & SLP_DISCONN)
512 nfsrv_zapsock(slp);
513 else if (slp->ns_flag & SLP_NEEDQ) {
514 slp->ns_flag &= ~SLP_NEEDQ;
515 (void) nfs_sndlock(&slp->ns_solock,
516 (struct nfsreq *)0);
517 nfsrv_rcv(slp->ns_so, (caddr_t)slp,
518 M_WAIT);
519 nfs_sndunlock(&slp->ns_solock);
520 }
521 error = nfsrv_dorec(slp, nfsd, &nd);
522 cur_usec = (u_quad_t)time.tv_sec * 1000000 +
523 (u_quad_t)time.tv_usec;
524 if (error && slp->ns_tq.lh_first &&
525 slp->ns_tq.lh_first->nd_time <= cur_usec) {
526 error = 0;
527 cacherep = RC_DOIT;
528 writes_todo = 1;
529 } else
530 writes_todo = 0;
531 nfsd->nfsd_flag |= NFSD_REQINPROG;
532 }
533 } else {
534 error = 0;
535 slp = nfsd->nfsd_slp;
536 }
537 if (error || (slp->ns_flag & SLP_VALID) == 0) {
538 if (nd) {
539 free((caddr_t)nd, M_NFSRVDESC);
540 nd = NULL;
541 }
542 nfsd->nfsd_slp = (struct nfssvc_sock *)0;
543 nfsd->nfsd_flag &= ~NFSD_REQINPROG;
544 nfsrv_slpderef(slp);
545 continue;
546 }
547 splx(s);
548 so = slp->ns_so;
549 sotype = so->so_type;
550 if (so->so_proto->pr_flags & PR_CONNREQUIRED)
551 solockp = &slp->ns_solock;
552 else
553 solockp = (int *)0;
554 if (nd) {
555 gettime(&nd->nd_starttime);
556 if (nd->nd_nam2)
557 nd->nd_nam = nd->nd_nam2;
558 else
559 nd->nd_nam = slp->ns_nam;
560
561 /*
562 * Check to see if authorization is needed.
563 */
564 if (nfsd->nfsd_flag & NFSD_NEEDAUTH) {
565 nfsd->nfsd_flag &= ~NFSD_NEEDAUTH;
566 nsd->nsd_haddr = mtod(nd->nd_nam,
567 struct sockaddr_in *)->sin_addr.s_addr;
568 nsd->nsd_authlen = nfsd->nfsd_authlen;
569 nsd->nsd_verflen = nfsd->nfsd_verflen;
570 if (!copyout(nfsd->nfsd_authstr,nsd->nsd_authstr,
571 nfsd->nfsd_authlen) &&
572 !copyout(nfsd->nfsd_verfstr, nsd->nsd_verfstr,
573 nfsd->nfsd_verflen) &&
574 !copyout((caddr_t)nsd, argp, sizeof (*nsd)))
575 return (ENEEDAUTH);
576 cacherep = RC_DROPIT;
577 } else
578 cacherep = nfsrv_getcache(nd, slp, &mreq);
579
580 /*
581 * Check for just starting up for NQNFS and send
582 * fake "try again later" replies to the NQNFS clients.
583 */
584 if (notstarted && nqnfsstarttime <= time.tv_sec) {
585 if (modify_flag) {
586 nqnfsstarttime = time.tv_sec + nqsrv_writeslack;
587 modify_flag = 0;
588 } else
589 notstarted = 0;
590 }
591 if (notstarted) {
592 if ((nd->nd_flag & ND_NQNFS) == 0)
593 cacherep = RC_DROPIT;
594 else if (nd->nd_procnum != NFSPROC_WRITE) {
595 nd->nd_procnum = NFSPROC_NOOP;
596 nd->nd_repstat = NQNFS_TRYLATER;
597 cacherep = RC_DOIT;
598 } else
599 modify_flag = 1;
600 } else if (nfsd->nfsd_flag & NFSD_AUTHFAIL) {
601 nfsd->nfsd_flag &= ~NFSD_AUTHFAIL;
602 nd->nd_procnum = NFSPROC_NOOP;
603 nd->nd_repstat = (NFSERR_AUTHERR | AUTH_TOOWEAK);
604 cacherep = RC_DOIT;
605 } else if (nfs_privport) {
606 /* Check if source port is privileged */
607 u_short port;
608 u_long addr;
609 struct mbuf *nam = nd->nd_nam;
610 struct sockaddr_in *sin;
611
612 sin = mtod(nam, struct sockaddr_in *);
613 port = ntohs(sin->sin_port);
614 if (port >= IPPORT_RESERVED &&
615 nd->nd_procnum != NFSPROC_NULL) {
616 nd->nd_procnum = NFSPROC_NOOP;
617 nd->nd_repstat = (NFSERR_AUTHERR | AUTH_TOOWEAK);
618 cacherep = RC_DOIT;
619 printf("NFS request from unprivileged port (%s:%d)\n",
620 inet_ntoa(sin->sin_addr), port);
621 }
622 }
623
624 }
625
626 /*
627 * Loop to get all the write rpc relies that have been
628 * gathered together.
629 */
630 do {
631 switch (cacherep) {
632 case RC_DOIT:
633 if (nd && (nd->nd_flag & ND_NFSV3))
634 procrastinate = nfsrvw_procrastinate_v3;
635 else
636 procrastinate = nfsrvw_procrastinate;
637 if (writes_todo || (nd->nd_procnum == NFSPROC_WRITE &&
638 procrastinate > 0 && !notstarted))
639 error = nfsrv_writegather(&nd, slp,
640 nfsd->nfsd_procp, &mreq);
641 else
642 error = (*(nfsrv3_procs[nd->nd_procnum]))(nd,
643 slp, nfsd->nfsd_procp, &mreq);
644 if (mreq == NULL)
645 break;
646 if (error) {
647 if (nd->nd_procnum != NQNFSPROC_VACATED)
648 nfsstats.srv_errs++;
649 nfsrv_updatecache(nd, FALSE, mreq);
650 if (nd->nd_nam2)
651 m_freem(nd->nd_nam2);
652 break;
653 }
654 nfsstats.srvrpccnt[nd->nd_procnum]++;
655 nfsrv_updatecache(nd, TRUE, mreq);
656 nd->nd_mrep = (struct mbuf *)0;
657 case RC_REPLY:
658 m = mreq;
659 siz = 0;
660 while (m) {
661 siz += m->m_len;
662 m = m->m_next;
663 }
664 if (siz <= 0 || siz > NFS_MAXPACKET) {
665 printf("mbuf siz=%d\n",siz);
666 panic("Bad nfs svc reply");
667 }
668 m = mreq;
669 m->m_pkthdr.len = siz;
670 m->m_pkthdr.rcvif = (struct ifnet *)0;
671 /*
672 * For stream protocols, prepend a Sun RPC
673 * Record Mark.
674 */
675 if (sotype == SOCK_STREAM) {
676 M_PREPEND(m, NFSX_UNSIGNED, M_WAIT);
677 *mtod(m, u_long *) = htonl(0x80000000 | siz);
678 }
679 if (solockp)
680 (void) nfs_sndlock(solockp, (struct nfsreq *)0);
681 if (slp->ns_flag & SLP_VALID)
682 error = nfs_send(so, nd->nd_nam2, m, NULL);
683 else {
684 error = EPIPE;
685 m_freem(m);
686 }
687 if (nfsrtton)
688 nfsd_rt(sotype, nd, cacherep);
689 if (nd->nd_nam2)
690 MFREE(nd->nd_nam2, m);
691 if (nd->nd_mrep)
692 m_freem(nd->nd_mrep);
693 if (error == EPIPE)
694 nfsrv_zapsock(slp);
695 if (solockp)
696 nfs_sndunlock(solockp);
697 if (error == EINTR || error == ERESTART) {
698 free((caddr_t)nd, M_NFSRVDESC);
699 nfsrv_slpderef(slp);
700 s = splnet();
701 goto done;
702 }
703 break;
704 case RC_DROPIT:
705 if (nfsrtton)
706 nfsd_rt(sotype, nd, cacherep);
707 m_freem(nd->nd_mrep);
708 m_freem(nd->nd_nam2);
709 break;
710 };
711 if (nd) {
712 FREE((caddr_t)nd, M_NFSRVDESC);
713 nd = NULL;
714 }
715
716 /*
717 * Check to see if there are outstanding writes that
718 * need to be serviced.
719 */
720 cur_usec = (u_quad_t)time.tv_sec * 1000000 +
721 (u_quad_t)time.tv_usec;
722 s = splsoftclock();
723 if (slp->ns_tq.lh_first &&
724 slp->ns_tq.lh_first->nd_time <= cur_usec) {
725 cacherep = RC_DOIT;
726 writes_todo = 1;
727 } else
728 writes_todo = 0;
729 splx(s);
730 } while (writes_todo);
731 s = splnet();
732 if (nfsrv_dorec(slp, nfsd, &nd)) {
733 nfsd->nfsd_flag &= ~NFSD_REQINPROG;
734 nfsd->nfsd_slp = NULL;
735 nfsrv_slpderef(slp);
736 }
737 }
738done:
739 TAILQ_REMOVE(&nfsd_head, nfsd, nfsd_chain);
740 splx(s);
741 free((caddr_t)nfsd, M_NFSD);
742 nsd->nsd_nfsd = (struct nfsd *)0;
743 if (--nfs_numnfsd == 0)
744 nfsrv_init(TRUE); /* Reinitialize everything */
745 return (error);
746}
747#endif /* NFS_NOSERVER */
748
749int nfs_defect = 0;
750SYSCTL_INT(_vfs_nfs, OID_AUTO, defect, CTLFLAG_RW, &nfs_defect, 0, "");
751
752/*
753 * Asynchronous I/O daemons for client nfs.
754 * They do read-ahead and write-behind operations on the block I/O cache.
755 * Never returns unless it fails or gets killed.
756 */
757static int
758nfssvc_iod(p)
759 struct proc *p;
760{
761 register struct buf *bp, *nbp;
762 register int i, myiod;
763 struct vnode *vp;
764 struct nfsmount *nmp;
765 int error = 0, s;
766
767 /*
768 * Assign my position or return error if too many already running
769 */
770 myiod = -1;
771 for (i = 0; i < NFS_MAXASYNCDAEMON; i++)
772 if (nfs_asyncdaemon[i] == 0) {
773 nfs_asyncdaemon[i]++;
774 myiod = i;
775 break;
776 }
777 if (myiod == -1)
778 return (EBUSY);
779 nfs_numasync++;
780 /*
781 * Just loop around doin our stuff until SIGKILL
782 */
783 for (;;) {
784 while (((nmp = nfs_iodmount[myiod]) == NULL
785 || nmp->nm_bufq.tqh_first == NULL)
786 && error == 0) {
787 if (nmp)
788 nmp->nm_bufqiods--;
789 nfs_iodwant[myiod] = p;
790 nfs_iodmount[myiod] = NULL;
791 error = tsleep((caddr_t)&nfs_iodwant[myiod],
792 PWAIT | PCATCH, "nfsidl", 0);
793 }
794 if (error) {
795 nfs_asyncdaemon[myiod] = 0;
796 if (nmp) nmp->nm_bufqiods--;
797 nfs_iodmount[myiod] = NULL;
798 nfs_numasync--;
799 return (error);
800 }
801 while ((bp = nmp->nm_bufq.tqh_first) != NULL) {
802 /* Take one off the front of the list */
803 TAILQ_REMOVE(&nmp->nm_bufq, bp, b_freelist);
804 nmp->nm_bufqlen--;
805 if (nmp->nm_bufqwant && nmp->nm_bufqlen < 2 * nfs_numasync) {
806 nmp->nm_bufqwant = FALSE;
807 wakeup(&nmp->nm_bufq);
808 }
809 if (bp->b_flags & B_READ)
810 (void) nfs_doio(bp, bp->b_rcred, (struct proc *)0);
811 else
812 (void) nfs_doio(bp, bp->b_wcred, (struct proc *)0);
813
814 /*
815 * If there are more than one iod on this mount, then defect
816 * so that the iods can be shared out fairly between the mounts
817 */
818 if (nfs_defect && nmp->nm_bufqiods > 1) {
819 NFS_DPF(ASYNCIO,
820 ("nfssvc_iod: iod %d defecting from mount %p\n",
821 myiod, nmp));
822 nfs_iodmount[myiod] = NULL;
823 nmp->nm_bufqiods--;
824 break;
825 }
826 }
827 }
828}
829
830/*
831 * Shut down a socket associated with an nfssvc_sock structure.
832 * Should be called with the send lock set, if required.
833 * The trick here is to increment the sref at the start, so that the nfsds
834 * will stop using it and clear ns_flag at the end so that it will not be
835 * reassigned during cleanup.
836 */
837static void
838nfsrv_zapsock(slp)
839 register struct nfssvc_sock *slp;
840{
841 register struct nfsuid *nuidp, *nnuidp;
842 register struct nfsrv_descript *nwp, *nnwp;
843 struct socket *so;
844 struct file *fp;
845 struct mbuf *m;
| 428 TAILQ_INIT(&slp->ns_uidlruhead);
429 TAILQ_INSERT_TAIL(&nfssvc_sockhead, slp, ns_chain);
430 }
431 slp->ns_so = so;
432 slp->ns_nam = mynam;
433 fp->f_count++;
434 slp->ns_fp = fp;
435 s = splnet();
436 so->so_upcallarg = (caddr_t)slp;
437 so->so_upcall = nfsrv_rcv;
438 slp->ns_flag = (SLP_VALID | SLP_NEEDQ);
439 nfsrv_wakenfsd(slp);
440 splx(s);
441 return (0);
442}
443
444/*
445 * Called by nfssvc() for nfsds. Just loops around servicing rpc requests
446 * until it is killed by a signal.
447 */
448static int
449nfssvc_nfsd(nsd, argp, p)
450 struct nfsd_srvargs *nsd;
451 caddr_t argp;
452 struct proc *p;
453{
454 register struct mbuf *m;
455 register int siz;
456 register struct nfssvc_sock *slp;
457 register struct socket *so;
458 register int *solockp;
459 struct nfsd *nfsd = nsd->nsd_nfsd;
460 struct nfsrv_descript *nd = NULL;
461 struct mbuf *mreq;
462 int error = 0, cacherep, s, sotype, writes_todo;
463 int procrastinate;
464 u_quad_t cur_usec;
465
466#ifndef nolint
467 cacherep = RC_DOIT;
468 writes_todo = 0;
469#endif
470 s = splnet();
471 if (nfsd == (struct nfsd *)0) {
472 nsd->nsd_nfsd = nfsd = (struct nfsd *)
473 malloc(sizeof (struct nfsd), M_NFSD, M_WAITOK);
474 bzero((caddr_t)nfsd, sizeof (struct nfsd));
475 nfsd->nfsd_procp = p;
476 TAILQ_INSERT_TAIL(&nfsd_head, nfsd, nfsd_chain);
477 nfs_numnfsd++;
478 }
479 /*
480 * Loop getting rpc requests until SIGKILL.
481 */
482 for (;;) {
483 if ((nfsd->nfsd_flag & NFSD_REQINPROG) == 0) {
484 while (nfsd->nfsd_slp == (struct nfssvc_sock *)0 &&
485 (nfsd_head_flag & NFSD_CHECKSLP) == 0) {
486 nfsd->nfsd_flag |= NFSD_WAITING;
487 nfsd_waiting++;
488 error = tsleep((caddr_t)nfsd, PSOCK | PCATCH,
489 "nfsd", 0);
490 nfsd_waiting--;
491 if (error)
492 goto done;
493 }
494 if (nfsd->nfsd_slp == (struct nfssvc_sock *)0 &&
495 (nfsd_head_flag & NFSD_CHECKSLP) != 0) {
496 for (slp = nfssvc_sockhead.tqh_first; slp != 0;
497 slp = slp->ns_chain.tqe_next) {
498 if ((slp->ns_flag & (SLP_VALID | SLP_DOREC))
499 == (SLP_VALID | SLP_DOREC)) {
500 slp->ns_flag &= ~SLP_DOREC;
501 slp->ns_sref++;
502 nfsd->nfsd_slp = slp;
503 break;
504 }
505 }
506 if (slp == 0)
507 nfsd_head_flag &= ~NFSD_CHECKSLP;
508 }
509 if ((slp = nfsd->nfsd_slp) == (struct nfssvc_sock *)0)
510 continue;
511 if (slp->ns_flag & SLP_VALID) {
512 if (slp->ns_flag & SLP_DISCONN)
513 nfsrv_zapsock(slp);
514 else if (slp->ns_flag & SLP_NEEDQ) {
515 slp->ns_flag &= ~SLP_NEEDQ;
516 (void) nfs_sndlock(&slp->ns_solock,
517 (struct nfsreq *)0);
518 nfsrv_rcv(slp->ns_so, (caddr_t)slp,
519 M_WAIT);
520 nfs_sndunlock(&slp->ns_solock);
521 }
522 error = nfsrv_dorec(slp, nfsd, &nd);
523 cur_usec = (u_quad_t)time.tv_sec * 1000000 +
524 (u_quad_t)time.tv_usec;
525 if (error && slp->ns_tq.lh_first &&
526 slp->ns_tq.lh_first->nd_time <= cur_usec) {
527 error = 0;
528 cacherep = RC_DOIT;
529 writes_todo = 1;
530 } else
531 writes_todo = 0;
532 nfsd->nfsd_flag |= NFSD_REQINPROG;
533 }
534 } else {
535 error = 0;
536 slp = nfsd->nfsd_slp;
537 }
538 if (error || (slp->ns_flag & SLP_VALID) == 0) {
539 if (nd) {
540 free((caddr_t)nd, M_NFSRVDESC);
541 nd = NULL;
542 }
543 nfsd->nfsd_slp = (struct nfssvc_sock *)0;
544 nfsd->nfsd_flag &= ~NFSD_REQINPROG;
545 nfsrv_slpderef(slp);
546 continue;
547 }
548 splx(s);
549 so = slp->ns_so;
550 sotype = so->so_type;
551 if (so->so_proto->pr_flags & PR_CONNREQUIRED)
552 solockp = &slp->ns_solock;
553 else
554 solockp = (int *)0;
555 if (nd) {
556 gettime(&nd->nd_starttime);
557 if (nd->nd_nam2)
558 nd->nd_nam = nd->nd_nam2;
559 else
560 nd->nd_nam = slp->ns_nam;
561
562 /*
563 * Check to see if authorization is needed.
564 */
565 if (nfsd->nfsd_flag & NFSD_NEEDAUTH) {
566 nfsd->nfsd_flag &= ~NFSD_NEEDAUTH;
567 nsd->nsd_haddr = mtod(nd->nd_nam,
568 struct sockaddr_in *)->sin_addr.s_addr;
569 nsd->nsd_authlen = nfsd->nfsd_authlen;
570 nsd->nsd_verflen = nfsd->nfsd_verflen;
571 if (!copyout(nfsd->nfsd_authstr,nsd->nsd_authstr,
572 nfsd->nfsd_authlen) &&
573 !copyout(nfsd->nfsd_verfstr, nsd->nsd_verfstr,
574 nfsd->nfsd_verflen) &&
575 !copyout((caddr_t)nsd, argp, sizeof (*nsd)))
576 return (ENEEDAUTH);
577 cacherep = RC_DROPIT;
578 } else
579 cacherep = nfsrv_getcache(nd, slp, &mreq);
580
581 /*
582 * Check for just starting up for NQNFS and send
583 * fake "try again later" replies to the NQNFS clients.
584 */
585 if (notstarted && nqnfsstarttime <= time.tv_sec) {
586 if (modify_flag) {
587 nqnfsstarttime = time.tv_sec + nqsrv_writeslack;
588 modify_flag = 0;
589 } else
590 notstarted = 0;
591 }
592 if (notstarted) {
593 if ((nd->nd_flag & ND_NQNFS) == 0)
594 cacherep = RC_DROPIT;
595 else if (nd->nd_procnum != NFSPROC_WRITE) {
596 nd->nd_procnum = NFSPROC_NOOP;
597 nd->nd_repstat = NQNFS_TRYLATER;
598 cacherep = RC_DOIT;
599 } else
600 modify_flag = 1;
601 } else if (nfsd->nfsd_flag & NFSD_AUTHFAIL) {
602 nfsd->nfsd_flag &= ~NFSD_AUTHFAIL;
603 nd->nd_procnum = NFSPROC_NOOP;
604 nd->nd_repstat = (NFSERR_AUTHERR | AUTH_TOOWEAK);
605 cacherep = RC_DOIT;
606 } else if (nfs_privport) {
607 /* Check if source port is privileged */
608 u_short port;
609 u_long addr;
610 struct mbuf *nam = nd->nd_nam;
611 struct sockaddr_in *sin;
612
613 sin = mtod(nam, struct sockaddr_in *);
614 port = ntohs(sin->sin_port);
615 if (port >= IPPORT_RESERVED &&
616 nd->nd_procnum != NFSPROC_NULL) {
617 nd->nd_procnum = NFSPROC_NOOP;
618 nd->nd_repstat = (NFSERR_AUTHERR | AUTH_TOOWEAK);
619 cacherep = RC_DOIT;
620 printf("NFS request from unprivileged port (%s:%d)\n",
621 inet_ntoa(sin->sin_addr), port);
622 }
623 }
624
625 }
626
627 /*
628 * Loop to get all the write rpc relies that have been
629 * gathered together.
630 */
631 do {
632 switch (cacherep) {
633 case RC_DOIT:
634 if (nd && (nd->nd_flag & ND_NFSV3))
635 procrastinate = nfsrvw_procrastinate_v3;
636 else
637 procrastinate = nfsrvw_procrastinate;
638 if (writes_todo || (nd->nd_procnum == NFSPROC_WRITE &&
639 procrastinate > 0 && !notstarted))
640 error = nfsrv_writegather(&nd, slp,
641 nfsd->nfsd_procp, &mreq);
642 else
643 error = (*(nfsrv3_procs[nd->nd_procnum]))(nd,
644 slp, nfsd->nfsd_procp, &mreq);
645 if (mreq == NULL)
646 break;
647 if (error) {
648 if (nd->nd_procnum != NQNFSPROC_VACATED)
649 nfsstats.srv_errs++;
650 nfsrv_updatecache(nd, FALSE, mreq);
651 if (nd->nd_nam2)
652 m_freem(nd->nd_nam2);
653 break;
654 }
655 nfsstats.srvrpccnt[nd->nd_procnum]++;
656 nfsrv_updatecache(nd, TRUE, mreq);
657 nd->nd_mrep = (struct mbuf *)0;
658 case RC_REPLY:
659 m = mreq;
660 siz = 0;
661 while (m) {
662 siz += m->m_len;
663 m = m->m_next;
664 }
665 if (siz <= 0 || siz > NFS_MAXPACKET) {
666 printf("mbuf siz=%d\n",siz);
667 panic("Bad nfs svc reply");
668 }
669 m = mreq;
670 m->m_pkthdr.len = siz;
671 m->m_pkthdr.rcvif = (struct ifnet *)0;
672 /*
673 * For stream protocols, prepend a Sun RPC
674 * Record Mark.
675 */
676 if (sotype == SOCK_STREAM) {
677 M_PREPEND(m, NFSX_UNSIGNED, M_WAIT);
678 *mtod(m, u_long *) = htonl(0x80000000 | siz);
679 }
680 if (solockp)
681 (void) nfs_sndlock(solockp, (struct nfsreq *)0);
682 if (slp->ns_flag & SLP_VALID)
683 error = nfs_send(so, nd->nd_nam2, m, NULL);
684 else {
685 error = EPIPE;
686 m_freem(m);
687 }
688 if (nfsrtton)
689 nfsd_rt(sotype, nd, cacherep);
690 if (nd->nd_nam2)
691 MFREE(nd->nd_nam2, m);
692 if (nd->nd_mrep)
693 m_freem(nd->nd_mrep);
694 if (error == EPIPE)
695 nfsrv_zapsock(slp);
696 if (solockp)
697 nfs_sndunlock(solockp);
698 if (error == EINTR || error == ERESTART) {
699 free((caddr_t)nd, M_NFSRVDESC);
700 nfsrv_slpderef(slp);
701 s = splnet();
702 goto done;
703 }
704 break;
705 case RC_DROPIT:
706 if (nfsrtton)
707 nfsd_rt(sotype, nd, cacherep);
708 m_freem(nd->nd_mrep);
709 m_freem(nd->nd_nam2);
710 break;
711 };
712 if (nd) {
713 FREE((caddr_t)nd, M_NFSRVDESC);
714 nd = NULL;
715 }
716
717 /*
718 * Check to see if there are outstanding writes that
719 * need to be serviced.
720 */
721 cur_usec = (u_quad_t)time.tv_sec * 1000000 +
722 (u_quad_t)time.tv_usec;
723 s = splsoftclock();
724 if (slp->ns_tq.lh_first &&
725 slp->ns_tq.lh_first->nd_time <= cur_usec) {
726 cacherep = RC_DOIT;
727 writes_todo = 1;
728 } else
729 writes_todo = 0;
730 splx(s);
731 } while (writes_todo);
732 s = splnet();
733 if (nfsrv_dorec(slp, nfsd, &nd)) {
734 nfsd->nfsd_flag &= ~NFSD_REQINPROG;
735 nfsd->nfsd_slp = NULL;
736 nfsrv_slpderef(slp);
737 }
738 }
739done:
740 TAILQ_REMOVE(&nfsd_head, nfsd, nfsd_chain);
741 splx(s);
742 free((caddr_t)nfsd, M_NFSD);
743 nsd->nsd_nfsd = (struct nfsd *)0;
744 if (--nfs_numnfsd == 0)
745 nfsrv_init(TRUE); /* Reinitialize everything */
746 return (error);
747}
748#endif /* NFS_NOSERVER */
749
750int nfs_defect = 0;
751SYSCTL_INT(_vfs_nfs, OID_AUTO, defect, CTLFLAG_RW, &nfs_defect, 0, "");
752
753/*
754 * Asynchronous I/O daemons for client nfs.
755 * They do read-ahead and write-behind operations on the block I/O cache.
756 * Never returns unless it fails or gets killed.
757 */
758static int
759nfssvc_iod(p)
760 struct proc *p;
761{
762 register struct buf *bp, *nbp;
763 register int i, myiod;
764 struct vnode *vp;
765 struct nfsmount *nmp;
766 int error = 0, s;
767
768 /*
769 * Assign my position or return error if too many already running
770 */
771 myiod = -1;
772 for (i = 0; i < NFS_MAXASYNCDAEMON; i++)
773 if (nfs_asyncdaemon[i] == 0) {
774 nfs_asyncdaemon[i]++;
775 myiod = i;
776 break;
777 }
778 if (myiod == -1)
779 return (EBUSY);
780 nfs_numasync++;
781 /*
782 * Just loop around doin our stuff until SIGKILL
783 */
784 for (;;) {
785 while (((nmp = nfs_iodmount[myiod]) == NULL
786 || nmp->nm_bufq.tqh_first == NULL)
787 && error == 0) {
788 if (nmp)
789 nmp->nm_bufqiods--;
790 nfs_iodwant[myiod] = p;
791 nfs_iodmount[myiod] = NULL;
792 error = tsleep((caddr_t)&nfs_iodwant[myiod],
793 PWAIT | PCATCH, "nfsidl", 0);
794 }
795 if (error) {
796 nfs_asyncdaemon[myiod] = 0;
797 if (nmp) nmp->nm_bufqiods--;
798 nfs_iodmount[myiod] = NULL;
799 nfs_numasync--;
800 return (error);
801 }
802 while ((bp = nmp->nm_bufq.tqh_first) != NULL) {
803 /* Take one off the front of the list */
804 TAILQ_REMOVE(&nmp->nm_bufq, bp, b_freelist);
805 nmp->nm_bufqlen--;
806 if (nmp->nm_bufqwant && nmp->nm_bufqlen < 2 * nfs_numasync) {
807 nmp->nm_bufqwant = FALSE;
808 wakeup(&nmp->nm_bufq);
809 }
810 if (bp->b_flags & B_READ)
811 (void) nfs_doio(bp, bp->b_rcred, (struct proc *)0);
812 else
813 (void) nfs_doio(bp, bp->b_wcred, (struct proc *)0);
814
815 /*
816 * If there are more than one iod on this mount, then defect
817 * so that the iods can be shared out fairly between the mounts
818 */
819 if (nfs_defect && nmp->nm_bufqiods > 1) {
820 NFS_DPF(ASYNCIO,
821 ("nfssvc_iod: iod %d defecting from mount %p\n",
822 myiod, nmp));
823 nfs_iodmount[myiod] = NULL;
824 nmp->nm_bufqiods--;
825 break;
826 }
827 }
828 }
829}
830
831/*
832 * Shut down a socket associated with an nfssvc_sock structure.
833 * Should be called with the send lock set, if required.
834 * The trick here is to increment the sref at the start, so that the nfsds
835 * will stop using it and clear ns_flag at the end so that it will not be
836 * reassigned during cleanup.
837 */
838static void
839nfsrv_zapsock(slp)
840 register struct nfssvc_sock *slp;
841{
842 register struct nfsuid *nuidp, *nnuidp;
843 register struct nfsrv_descript *nwp, *nnwp;
844 struct socket *so;
845 struct file *fp;
846 struct mbuf *m;
|
| 847 struct nfsrv_rec *rec;
|
846 int s;
847
848 slp->ns_flag &= ~SLP_ALLFLAGS;
849 fp = slp->ns_fp;
850 if (fp) {
851 slp->ns_fp = (struct file *)0;
852 so = slp->ns_so;
853 so->so_upcall = NULL;
854 soshutdown(so, 2);
855 closef(fp, (struct proc *)0);
856 if (slp->ns_nam)
857 MFREE(slp->ns_nam, m);
858 m_freem(slp->ns_raw);
| 848 int s;
849
850 slp->ns_flag &= ~SLP_ALLFLAGS;
851 fp = slp->ns_fp;
852 if (fp) {
853 slp->ns_fp = (struct file *)0;
854 so = slp->ns_so;
855 so->so_upcall = NULL;
856 soshutdown(so, 2);
857 closef(fp, (struct proc *)0);
858 if (slp->ns_nam)
859 MFREE(slp->ns_nam, m);
860 m_freem(slp->ns_raw);
|
859 m_freem(slp->ns_rec);
| 861 while (rec = STAILQ_FIRST(&slp->ns_rec)) {
862 STAILQ_REMOVE_HEAD(&slp->ns_rec, nr_link);
863 if (rec->nr_address)
864 m_freem(rec->nr_address);
865 m_freem(rec->nr_packet);
866 free(rec, M_NFSRVDESC);
867 }
|
860 for (nuidp = slp->ns_uidlruhead.tqh_first; nuidp != 0;
861 nuidp = nnuidp) {
862 nnuidp = nuidp->nu_lru.tqe_next;
863 LIST_REMOVE(nuidp, nu_hash);
864 TAILQ_REMOVE(&slp->ns_uidlruhead, nuidp, nu_lru);
865 if (nuidp->nu_flag & NU_NAM)
866 m_freem(nuidp->nu_nam);
867 free((caddr_t)nuidp, M_NFSUID);
868 }
869 s = splsoftclock();
870 for (nwp = slp->ns_tq.lh_first; nwp; nwp = nnwp) {
871 nnwp = nwp->nd_tq.le_next;
872 LIST_REMOVE(nwp, nd_tq);
873 free((caddr_t)nwp, M_NFSRVDESC);
874 }
875 LIST_INIT(&slp->ns_tq);
876 splx(s);
877 }
878}
879
880/*
881 * Get an authorization string for the uid by having the mount_nfs sitting
882 * on this mount point porpous out of the kernel and do it.
883 */
884int
885nfs_getauth(nmp, rep, cred, auth_str, auth_len, verf_str, verf_len, key)
886 register struct nfsmount *nmp;
887 struct nfsreq *rep;
888 struct ucred *cred;
889 char **auth_str;
890 int *auth_len;
891 char *verf_str;
892 int *verf_len;
893 NFSKERBKEY_T key; /* return session key */
894{
895 int error = 0;
896
897 while ((nmp->nm_flag & NFSMNT_WAITAUTH) == 0) {
898 nmp->nm_flag |= NFSMNT_WANTAUTH;
899 (void) tsleep((caddr_t)&nmp->nm_authtype, PSOCK,
900 "nfsauth1", 2 * hz);
901 error = nfs_sigintr(nmp, rep, rep->r_procp);
902 if (error) {
903 nmp->nm_flag &= ~NFSMNT_WANTAUTH;
904 return (error);
905 }
906 }
907 nmp->nm_flag &= ~(NFSMNT_WAITAUTH | NFSMNT_WANTAUTH);
908 nmp->nm_authstr = *auth_str = (char *)malloc(RPCAUTH_MAXSIZ, M_TEMP, M_WAITOK);
909 nmp->nm_authlen = RPCAUTH_MAXSIZ;
910 nmp->nm_verfstr = verf_str;
911 nmp->nm_verflen = *verf_len;
912 nmp->nm_authuid = cred->cr_uid;
913 wakeup((caddr_t)&nmp->nm_authstr);
914
915 /*
916 * And wait for mount_nfs to do its stuff.
917 */
918 while ((nmp->nm_flag & NFSMNT_HASAUTH) == 0 && error == 0) {
919 (void) tsleep((caddr_t)&nmp->nm_authlen, PSOCK,
920 "nfsauth2", 2 * hz);
921 error = nfs_sigintr(nmp, rep, rep->r_procp);
922 }
923 if (nmp->nm_flag & NFSMNT_AUTHERR) {
924 nmp->nm_flag &= ~NFSMNT_AUTHERR;
925 error = EAUTH;
926 }
927 if (error)
928 free((caddr_t)*auth_str, M_TEMP);
929 else {
930 *auth_len = nmp->nm_authlen;
931 *verf_len = nmp->nm_verflen;
932 bcopy((caddr_t)nmp->nm_key, (caddr_t)key, sizeof (key));
933 }
934 nmp->nm_flag &= ~NFSMNT_HASAUTH;
935 nmp->nm_flag |= NFSMNT_WAITAUTH;
936 if (nmp->nm_flag & NFSMNT_WANTAUTH) {
937 nmp->nm_flag &= ~NFSMNT_WANTAUTH;
938 wakeup((caddr_t)&nmp->nm_authtype);
939 }
940 return (error);
941}
942
943/*
944 * Get a nickname authenticator and verifier.
945 */
946int
947nfs_getnickauth(nmp, cred, auth_str, auth_len, verf_str, verf_len)
948 struct nfsmount *nmp;
949 struct ucred *cred;
950 char **auth_str;
951 int *auth_len;
952 char *verf_str;
953 int verf_len;
954{
955 register struct nfsuid *nuidp;
956 register u_long *nickp, *verfp;
957 struct timeval ktvin, ktvout;
958
959#ifdef DIAGNOSTIC
960 if (verf_len < (4 * NFSX_UNSIGNED))
961 panic("nfs_getnickauth verf too small");
962#endif
963 for (nuidp = NMUIDHASH(nmp, cred->cr_uid)->lh_first;
964 nuidp != 0; nuidp = nuidp->nu_hash.le_next) {
965 if (nuidp->nu_cr.cr_uid == cred->cr_uid)
966 break;
967 }
968 if (!nuidp || nuidp->nu_expire < time.tv_sec)
969 return (EACCES);
970
971 /*
972 * Move to the end of the lru list (end of lru == most recently used).
973 */
974 TAILQ_REMOVE(&nmp->nm_uidlruhead, nuidp, nu_lru);
975 TAILQ_INSERT_TAIL(&nmp->nm_uidlruhead, nuidp, nu_lru);
976
977 nickp = (u_long *)malloc(2 * NFSX_UNSIGNED, M_TEMP, M_WAITOK);
978 *nickp++ = txdr_unsigned(RPCAKN_NICKNAME);
979 *nickp = txdr_unsigned(nuidp->nu_nickname);
980 *auth_str = (char *)nickp;
981 *auth_len = 2 * NFSX_UNSIGNED;
982
983 /*
984 * Now we must encrypt the verifier and package it up.
985 */
986 verfp = (u_long *)verf_str;
987 *verfp++ = txdr_unsigned(RPCAKN_NICKNAME);
988 if (time.tv_sec > nuidp->nu_timestamp.tv_sec ||
989 (time.tv_sec == nuidp->nu_timestamp.tv_sec &&
990 time.tv_usec > nuidp->nu_timestamp.tv_usec))
991 gettime(&nuidp->nu_timestamp);
992 else
993 nuidp->nu_timestamp.tv_usec++;
994 ktvin.tv_sec = txdr_unsigned(nuidp->nu_timestamp.tv_sec);
995 ktvin.tv_usec = txdr_unsigned(nuidp->nu_timestamp.tv_usec);
996
997 /*
998 * Now encrypt the timestamp verifier in ecb mode using the session
999 * key.
1000 */
1001#ifdef NFSKERB
1002 XXX
1003#endif
1004
1005 *verfp++ = ktvout.tv_sec;
1006 *verfp++ = ktvout.tv_usec;
1007 *verfp = 0;
1008 return (0);
1009}
1010
1011/*
1012 * Save the current nickname in a hash list entry on the mount point.
1013 */
1014int
1015nfs_savenickauth(nmp, cred, len, key, mdp, dposp, mrep)
1016 register struct nfsmount *nmp;
1017 struct ucred *cred;
1018 int len;
1019 NFSKERBKEY_T key;
1020 struct mbuf **mdp;
1021 char **dposp;
1022 struct mbuf *mrep;
1023{
1024 register struct nfsuid *nuidp;
1025 register u_long *tl;
1026 register long t1;
1027 struct mbuf *md = *mdp;
1028 struct timeval ktvin, ktvout;
1029 u_long nick;
1030 char *dpos = *dposp, *cp2;
1031 int deltasec, error = 0;
1032
1033 if (len == (3 * NFSX_UNSIGNED)) {
1034 nfsm_dissect(tl, u_long *, 3 * NFSX_UNSIGNED);
1035 ktvin.tv_sec = *tl++;
1036 ktvin.tv_usec = *tl++;
1037 nick = fxdr_unsigned(u_long, *tl);
1038
1039 /*
1040 * Decrypt the timestamp in ecb mode.
1041 */
1042#ifdef NFSKERB
1043 XXX
1044#endif
1045 ktvout.tv_sec = fxdr_unsigned(long, ktvout.tv_sec);
1046 ktvout.tv_usec = fxdr_unsigned(long, ktvout.tv_usec);
1047 deltasec = time.tv_sec - ktvout.tv_sec;
1048 if (deltasec < 0)
1049 deltasec = -deltasec;
1050 /*
1051 * If ok, add it to the hash list for the mount point.
1052 */
1053 if (deltasec <= NFS_KERBCLOCKSKEW) {
1054 if (nmp->nm_numuids < nuidhash_max) {
1055 nmp->nm_numuids++;
1056 nuidp = (struct nfsuid *)
1057 malloc(sizeof (struct nfsuid), M_NFSUID,
1058 M_WAITOK);
1059 } else {
1060 nuidp = nmp->nm_uidlruhead.tqh_first;
1061 LIST_REMOVE(nuidp, nu_hash);
1062 TAILQ_REMOVE(&nmp->nm_uidlruhead, nuidp,
1063 nu_lru);
1064 }
1065 nuidp->nu_flag = 0;
1066 nuidp->nu_cr.cr_uid = cred->cr_uid;
1067 nuidp->nu_expire = time.tv_sec + NFS_KERBTTL;
1068 nuidp->nu_timestamp = ktvout;
1069 nuidp->nu_nickname = nick;
1070 bcopy(key, nuidp->nu_key, sizeof (key));
1071 TAILQ_INSERT_TAIL(&nmp->nm_uidlruhead, nuidp,
1072 nu_lru);
1073 LIST_INSERT_HEAD(NMUIDHASH(nmp, cred->cr_uid),
1074 nuidp, nu_hash);
1075 }
1076 } else
1077 nfsm_adv(nfsm_rndup(len));
1078nfsmout:
1079 *mdp = md;
1080 *dposp = dpos;
1081 return (error);
1082}
1083
1084#ifndef NFS_NOSERVER
1085
1086/*
1087 * Derefence a server socket structure. If it has no more references and
1088 * is no longer valid, you can throw it away.
1089 */
1090void
1091nfsrv_slpderef(slp)
1092 register struct nfssvc_sock *slp;
1093{
1094 if (--(slp->ns_sref) == 0 && (slp->ns_flag & SLP_VALID) == 0) {
1095 TAILQ_REMOVE(&nfssvc_sockhead, slp, ns_chain);
1096 free((caddr_t)slp, M_NFSSVC);
1097 }
1098}
1099
1100/*
1101 * Initialize the data structures for the server.
1102 * Handshake with any new nfsds starting up to avoid any chance of
1103 * corruption.
1104 */
1105void
1106nfsrv_init(terminating)
1107 int terminating;
1108{
1109 register struct nfssvc_sock *slp, *nslp;
1110
1111 if (nfssvc_sockhead_flag & SLP_INIT)
1112 panic("nfsd init");
1113 nfssvc_sockhead_flag |= SLP_INIT;
1114 if (terminating) {
1115 for (slp = nfssvc_sockhead.tqh_first; slp != 0; slp = nslp) {
1116 nslp = slp->ns_chain.tqe_next;
1117 if (slp->ns_flag & SLP_VALID)
1118 nfsrv_zapsock(slp);
1119 TAILQ_REMOVE(&nfssvc_sockhead, slp, ns_chain);
1120 free((caddr_t)slp, M_NFSSVC);
1121 }
1122 nfsrv_cleancache(); /* And clear out server cache */
1123 }
1124
1125 TAILQ_INIT(&nfssvc_sockhead);
1126 nfssvc_sockhead_flag &= ~SLP_INIT;
1127 if (nfssvc_sockhead_flag & SLP_WANTINIT) {
1128 nfssvc_sockhead_flag &= ~SLP_WANTINIT;
1129 wakeup((caddr_t)&nfssvc_sockhead);
1130 }
1131
1132 TAILQ_INIT(&nfsd_head);
1133 nfsd_head_flag &= ~NFSD_CHECKSLP;
1134
1135 nfs_udpsock = (struct nfssvc_sock *)
1136 malloc(sizeof (struct nfssvc_sock), M_NFSSVC, M_WAITOK);
1137 bzero((caddr_t)nfs_udpsock, sizeof (struct nfssvc_sock));
| 868 for (nuidp = slp->ns_uidlruhead.tqh_first; nuidp != 0;
869 nuidp = nnuidp) {
870 nnuidp = nuidp->nu_lru.tqe_next;
871 LIST_REMOVE(nuidp, nu_hash);
872 TAILQ_REMOVE(&slp->ns_uidlruhead, nuidp, nu_lru);
873 if (nuidp->nu_flag & NU_NAM)
874 m_freem(nuidp->nu_nam);
875 free((caddr_t)nuidp, M_NFSUID);
876 }
877 s = splsoftclock();
878 for (nwp = slp->ns_tq.lh_first; nwp; nwp = nnwp) {
879 nnwp = nwp->nd_tq.le_next;
880 LIST_REMOVE(nwp, nd_tq);
881 free((caddr_t)nwp, M_NFSRVDESC);
882 }
883 LIST_INIT(&slp->ns_tq);
884 splx(s);
885 }
886}
887
888/*
889 * Get an authorization string for the uid by having the mount_nfs sitting
890 * on this mount point porpous out of the kernel and do it.
891 */
892int
893nfs_getauth(nmp, rep, cred, auth_str, auth_len, verf_str, verf_len, key)
894 register struct nfsmount *nmp;
895 struct nfsreq *rep;
896 struct ucred *cred;
897 char **auth_str;
898 int *auth_len;
899 char *verf_str;
900 int *verf_len;
901 NFSKERBKEY_T key; /* return session key */
902{
903 int error = 0;
904
905 while ((nmp->nm_flag & NFSMNT_WAITAUTH) == 0) {
906 nmp->nm_flag |= NFSMNT_WANTAUTH;
907 (void) tsleep((caddr_t)&nmp->nm_authtype, PSOCK,
908 "nfsauth1", 2 * hz);
909 error = nfs_sigintr(nmp, rep, rep->r_procp);
910 if (error) {
911 nmp->nm_flag &= ~NFSMNT_WANTAUTH;
912 return (error);
913 }
914 }
915 nmp->nm_flag &= ~(NFSMNT_WAITAUTH | NFSMNT_WANTAUTH);
916 nmp->nm_authstr = *auth_str = (char *)malloc(RPCAUTH_MAXSIZ, M_TEMP, M_WAITOK);
917 nmp->nm_authlen = RPCAUTH_MAXSIZ;
918 nmp->nm_verfstr = verf_str;
919 nmp->nm_verflen = *verf_len;
920 nmp->nm_authuid = cred->cr_uid;
921 wakeup((caddr_t)&nmp->nm_authstr);
922
923 /*
924 * And wait for mount_nfs to do its stuff.
925 */
926 while ((nmp->nm_flag & NFSMNT_HASAUTH) == 0 && error == 0) {
927 (void) tsleep((caddr_t)&nmp->nm_authlen, PSOCK,
928 "nfsauth2", 2 * hz);
929 error = nfs_sigintr(nmp, rep, rep->r_procp);
930 }
931 if (nmp->nm_flag & NFSMNT_AUTHERR) {
932 nmp->nm_flag &= ~NFSMNT_AUTHERR;
933 error = EAUTH;
934 }
935 if (error)
936 free((caddr_t)*auth_str, M_TEMP);
937 else {
938 *auth_len = nmp->nm_authlen;
939 *verf_len = nmp->nm_verflen;
940 bcopy((caddr_t)nmp->nm_key, (caddr_t)key, sizeof (key));
941 }
942 nmp->nm_flag &= ~NFSMNT_HASAUTH;
943 nmp->nm_flag |= NFSMNT_WAITAUTH;
944 if (nmp->nm_flag & NFSMNT_WANTAUTH) {
945 nmp->nm_flag &= ~NFSMNT_WANTAUTH;
946 wakeup((caddr_t)&nmp->nm_authtype);
947 }
948 return (error);
949}
950
951/*
952 * Get a nickname authenticator and verifier.
953 */
954int
955nfs_getnickauth(nmp, cred, auth_str, auth_len, verf_str, verf_len)
956 struct nfsmount *nmp;
957 struct ucred *cred;
958 char **auth_str;
959 int *auth_len;
960 char *verf_str;
961 int verf_len;
962{
963 register struct nfsuid *nuidp;
964 register u_long *nickp, *verfp;
965 struct timeval ktvin, ktvout;
966
967#ifdef DIAGNOSTIC
968 if (verf_len < (4 * NFSX_UNSIGNED))
969 panic("nfs_getnickauth verf too small");
970#endif
971 for (nuidp = NMUIDHASH(nmp, cred->cr_uid)->lh_first;
972 nuidp != 0; nuidp = nuidp->nu_hash.le_next) {
973 if (nuidp->nu_cr.cr_uid == cred->cr_uid)
974 break;
975 }
976 if (!nuidp || nuidp->nu_expire < time.tv_sec)
977 return (EACCES);
978
979 /*
980 * Move to the end of the lru list (end of lru == most recently used).
981 */
982 TAILQ_REMOVE(&nmp->nm_uidlruhead, nuidp, nu_lru);
983 TAILQ_INSERT_TAIL(&nmp->nm_uidlruhead, nuidp, nu_lru);
984
985 nickp = (u_long *)malloc(2 * NFSX_UNSIGNED, M_TEMP, M_WAITOK);
986 *nickp++ = txdr_unsigned(RPCAKN_NICKNAME);
987 *nickp = txdr_unsigned(nuidp->nu_nickname);
988 *auth_str = (char *)nickp;
989 *auth_len = 2 * NFSX_UNSIGNED;
990
991 /*
992 * Now we must encrypt the verifier and package it up.
993 */
994 verfp = (u_long *)verf_str;
995 *verfp++ = txdr_unsigned(RPCAKN_NICKNAME);
996 if (time.tv_sec > nuidp->nu_timestamp.tv_sec ||
997 (time.tv_sec == nuidp->nu_timestamp.tv_sec &&
998 time.tv_usec > nuidp->nu_timestamp.tv_usec))
999 gettime(&nuidp->nu_timestamp);
1000 else
1001 nuidp->nu_timestamp.tv_usec++;
1002 ktvin.tv_sec = txdr_unsigned(nuidp->nu_timestamp.tv_sec);
1003 ktvin.tv_usec = txdr_unsigned(nuidp->nu_timestamp.tv_usec);
1004
1005 /*
1006 * Now encrypt the timestamp verifier in ecb mode using the session
1007 * key.
1008 */
1009#ifdef NFSKERB
1010 XXX
1011#endif
1012
1013 *verfp++ = ktvout.tv_sec;
1014 *verfp++ = ktvout.tv_usec;
1015 *verfp = 0;
1016 return (0);
1017}
1018
1019/*
1020 * Save the current nickname in a hash list entry on the mount point.
1021 */
1022int
1023nfs_savenickauth(nmp, cred, len, key, mdp, dposp, mrep)
1024 register struct nfsmount *nmp;
1025 struct ucred *cred;
1026 int len;
1027 NFSKERBKEY_T key;
1028 struct mbuf **mdp;
1029 char **dposp;
1030 struct mbuf *mrep;
1031{
1032 register struct nfsuid *nuidp;
1033 register u_long *tl;
1034 register long t1;
1035 struct mbuf *md = *mdp;
1036 struct timeval ktvin, ktvout;
1037 u_long nick;
1038 char *dpos = *dposp, *cp2;
1039 int deltasec, error = 0;
1040
1041 if (len == (3 * NFSX_UNSIGNED)) {
1042 nfsm_dissect(tl, u_long *, 3 * NFSX_UNSIGNED);
1043 ktvin.tv_sec = *tl++;
1044 ktvin.tv_usec = *tl++;
1045 nick = fxdr_unsigned(u_long, *tl);
1046
1047 /*
1048 * Decrypt the timestamp in ecb mode.
1049 */
1050#ifdef NFSKERB
1051 XXX
1052#endif
1053 ktvout.tv_sec = fxdr_unsigned(long, ktvout.tv_sec);
1054 ktvout.tv_usec = fxdr_unsigned(long, ktvout.tv_usec);
1055 deltasec = time.tv_sec - ktvout.tv_sec;
1056 if (deltasec < 0)
1057 deltasec = -deltasec;
1058 /*
1059 * If ok, add it to the hash list for the mount point.
1060 */
1061 if (deltasec <= NFS_KERBCLOCKSKEW) {
1062 if (nmp->nm_numuids < nuidhash_max) {
1063 nmp->nm_numuids++;
1064 nuidp = (struct nfsuid *)
1065 malloc(sizeof (struct nfsuid), M_NFSUID,
1066 M_WAITOK);
1067 } else {
1068 nuidp = nmp->nm_uidlruhead.tqh_first;
1069 LIST_REMOVE(nuidp, nu_hash);
1070 TAILQ_REMOVE(&nmp->nm_uidlruhead, nuidp,
1071 nu_lru);
1072 }
1073 nuidp->nu_flag = 0;
1074 nuidp->nu_cr.cr_uid = cred->cr_uid;
1075 nuidp->nu_expire = time.tv_sec + NFS_KERBTTL;
1076 nuidp->nu_timestamp = ktvout;
1077 nuidp->nu_nickname = nick;
1078 bcopy(key, nuidp->nu_key, sizeof (key));
1079 TAILQ_INSERT_TAIL(&nmp->nm_uidlruhead, nuidp,
1080 nu_lru);
1081 LIST_INSERT_HEAD(NMUIDHASH(nmp, cred->cr_uid),
1082 nuidp, nu_hash);
1083 }
1084 } else
1085 nfsm_adv(nfsm_rndup(len));
1086nfsmout:
1087 *mdp = md;
1088 *dposp = dpos;
1089 return (error);
1090}
1091
1092#ifndef NFS_NOSERVER
1093
1094/*
1095 * Derefence a server socket structure. If it has no more references and
1096 * is no longer valid, you can throw it away.
1097 */
1098void
1099nfsrv_slpderef(slp)
1100 register struct nfssvc_sock *slp;
1101{
1102 if (--(slp->ns_sref) == 0 && (slp->ns_flag & SLP_VALID) == 0) {
1103 TAILQ_REMOVE(&nfssvc_sockhead, slp, ns_chain);
1104 free((caddr_t)slp, M_NFSSVC);
1105 }
1106}
1107
1108/*
1109 * Initialize the data structures for the server.
1110 * Handshake with any new nfsds starting up to avoid any chance of
1111 * corruption.
1112 */
1113void
1114nfsrv_init(terminating)
1115 int terminating;
1116{
1117 register struct nfssvc_sock *slp, *nslp;
1118
1119 if (nfssvc_sockhead_flag & SLP_INIT)
1120 panic("nfsd init");
1121 nfssvc_sockhead_flag |= SLP_INIT;
1122 if (terminating) {
1123 for (slp = nfssvc_sockhead.tqh_first; slp != 0; slp = nslp) {
1124 nslp = slp->ns_chain.tqe_next;
1125 if (slp->ns_flag & SLP_VALID)
1126 nfsrv_zapsock(slp);
1127 TAILQ_REMOVE(&nfssvc_sockhead, slp, ns_chain);
1128 free((caddr_t)slp, M_NFSSVC);
1129 }
1130 nfsrv_cleancache(); /* And clear out server cache */
1131 }
1132
1133 TAILQ_INIT(&nfssvc_sockhead);
1134 nfssvc_sockhead_flag &= ~SLP_INIT;
1135 if (nfssvc_sockhead_flag & SLP_WANTINIT) {
1136 nfssvc_sockhead_flag &= ~SLP_WANTINIT;
1137 wakeup((caddr_t)&nfssvc_sockhead);
1138 }
1139
1140 TAILQ_INIT(&nfsd_head);
1141 nfsd_head_flag &= ~NFSD_CHECKSLP;
1142
1143 nfs_udpsock = (struct nfssvc_sock *)
1144 malloc(sizeof (struct nfssvc_sock), M_NFSSVC, M_WAITOK);
1145 bzero((caddr_t)nfs_udpsock, sizeof (struct nfssvc_sock));
|
| 1146 STAILQ_INIT(&nfs_udpsock->ns_rec);
|
1138 TAILQ_INIT(&nfs_udpsock->ns_uidlruhead);
1139 TAILQ_INSERT_HEAD(&nfssvc_sockhead, nfs_udpsock, ns_chain);
1140
1141 nfs_cltpsock = (struct nfssvc_sock *)
1142 malloc(sizeof (struct nfssvc_sock), M_NFSSVC, M_WAITOK);
1143 bzero((caddr_t)nfs_cltpsock, sizeof (struct nfssvc_sock));
| 1147 TAILQ_INIT(&nfs_udpsock->ns_uidlruhead);
1148 TAILQ_INSERT_HEAD(&nfssvc_sockhead, nfs_udpsock, ns_chain);
1149
1150 nfs_cltpsock = (struct nfssvc_sock *)
1151 malloc(sizeof (struct nfssvc_sock), M_NFSSVC, M_WAITOK);
1152 bzero((caddr_t)nfs_cltpsock, sizeof (struct nfssvc_sock));
|
| 1153 STAILQ_INIT(&nfs_cltpsock->ns_rec);
|
1144 TAILQ_INIT(&nfs_cltpsock->ns_uidlruhead);
1145 TAILQ_INSERT_TAIL(&nfssvc_sockhead, nfs_cltpsock, ns_chain);
1146}
1147
1148/*
1149 * Add entries to the server monitor log.
1150 */
1151static void
1152nfsd_rt(sotype, nd, cacherep)
1153 int sotype;
1154 register struct nfsrv_descript *nd;
1155 int cacherep;
1156{
1157 register struct drt *rt;
1158
1159 rt = &nfsdrt.drt[nfsdrt.pos];
1160 if (cacherep == RC_DOIT)
1161 rt->flag = 0;
1162 else if (cacherep == RC_REPLY)
1163 rt->flag = DRT_CACHEREPLY;
1164 else
1165 rt->flag = DRT_CACHEDROP;
1166 if (sotype == SOCK_STREAM)
1167 rt->flag |= DRT_TCP;
1168 if (nd->nd_flag & ND_NQNFS)
1169 rt->flag |= DRT_NQNFS;
1170 else if (nd->nd_flag & ND_NFSV3)
1171 rt->flag |= DRT_NFSV3;
1172 rt->proc = nd->nd_procnum;
1173 if (mtod(nd->nd_nam, struct sockaddr *)->sa_family == AF_INET)
1174 rt->ipadr = mtod(nd->nd_nam, struct sockaddr_in *)->sin_addr.s_addr;
1175 else
1176 rt->ipadr = INADDR_ANY;
1177 rt->resptime = ((time.tv_sec - nd->nd_starttime.tv_sec) * 1000000) +
1178 (time.tv_usec - nd->nd_starttime.tv_usec);
1179 gettime(&rt->tstamp);
1180 nfsdrt.pos = (nfsdrt.pos + 1) % NFSRTTLOGSIZ;
1181}
1182#endif /* NFS_NOSERVER */
| 1154 TAILQ_INIT(&nfs_cltpsock->ns_uidlruhead);
1155 TAILQ_INSERT_TAIL(&nfssvc_sockhead, nfs_cltpsock, ns_chain);
1156}
1157
1158/*
1159 * Add entries to the server monitor log.
1160 */
1161static void
1162nfsd_rt(sotype, nd, cacherep)
1163 int sotype;
1164 register struct nfsrv_descript *nd;
1165 int cacherep;
1166{
1167 register struct drt *rt;
1168
1169 rt = &nfsdrt.drt[nfsdrt.pos];
1170 if (cacherep == RC_DOIT)
1171 rt->flag = 0;
1172 else if (cacherep == RC_REPLY)
1173 rt->flag = DRT_CACHEREPLY;
1174 else
1175 rt->flag = DRT_CACHEDROP;
1176 if (sotype == SOCK_STREAM)
1177 rt->flag |= DRT_TCP;
1178 if (nd->nd_flag & ND_NQNFS)
1179 rt->flag |= DRT_NQNFS;
1180 else if (nd->nd_flag & ND_NFSV3)
1181 rt->flag |= DRT_NFSV3;
1182 rt->proc = nd->nd_procnum;
1183 if (mtod(nd->nd_nam, struct sockaddr *)->sa_family == AF_INET)
1184 rt->ipadr = mtod(nd->nd_nam, struct sockaddr_in *)->sin_addr.s_addr;
1185 else
1186 rt->ipadr = INADDR_ANY;
1187 rt->resptime = ((time.tv_sec - nd->nd_starttime.tv_sec) * 1000000) +
1188 (time.tv_usec - nd->nd_starttime.tv_usec);
1189 gettime(&rt->tstamp);
1190 nfsdrt.pos = (nfsdrt.pos + 1) % NFSRTTLOGSIZ;
1191}
1192#endif /* NFS_NOSERVER */
|