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 * Herb Hasler and 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 * 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.
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
36 * @(#) Copyright (c) 1989, 1993 The Regents of the University of California. All rights reserved.
37 * @(#)mountd.c 8.15 (Berkeley) 5/1/95
38 * $FreeBSD: src/sbin/mountd/mountd.c,v 1.39.2.5 2002/09/13 15:57:43 joerg Exp $
39 * $DragonFly: src/sbin/mountd/mountd.c,v 1.9 2008/02/05 20:49:51 dillon Exp $
42 #include <sys/param.h>
43 #include <sys/mount.h>
44 #include <sys/mountctl.h>
45 #include <sys/fcntl.h>
47 #include <sys/syslog.h>
48 #include <sys/sysctl.h>
51 #include <rpc/pmap_clnt.h>
52 #include <rpc/pmap_prot.h>
53 #include <rpcsvc/mount.h>
54 #include <vfs/nfs/rpcv2.h>
55 #include <vfs/nfs/nfsproto.h>
56 #include <vfs/nfs/nfs.h>
57 #include <vfs/ufs/ufsmount.h>
58 #include <vfs/msdosfs/msdosfsmount.h>
59 #include <vfs/ntfs/ntfsmount.h>
60 #include <vfs/isofs/cd9660/cd9660_mount.h> /* XXX need isofs in include */
62 #include <arpa/inet.h>
75 #include "pathnames.h"
82 #define MOUNTDLOCK "/var/run/mountd.lock"
86 * Structures for keeping the mount list and export list
89 struct mountlist *ml_next;
90 char ml_host[RPCMNT_NAMELEN+1];
91 char ml_dirp[RPCMNT_PATHLEN+1];
95 struct dirlist *dp_left;
96 struct dirlist *dp_right;
98 struct hostlist *dp_hosts; /* List of hosts this dir exported to */
99 char dp_dirp[1]; /* Actually malloc'd to size of dir */
102 #define DP_DEFSET 0x1
103 #define DP_HOSTSET 0x2
107 struct exportlist *ex_next;
108 struct dirlist *ex_dirl;
109 struct dirlist *ex_defdir;
116 #define EX_LINKED 0x1
119 struct sockaddr_storage nt_net;
125 struct addrinfo *gt_addrinfo;
126 struct netmsk gt_net;
131 union grouptypes gr_ptr;
132 struct grouplist *gr_next;
138 #define GT_DEFAULT 0x3
139 #define GT_IGNORE 0x5
142 int ht_flag; /* Uses DP_xx bits */
143 struct grouplist *ht_grp;
144 struct hostlist *ht_next;
154 char *add_expdir(struct dirlist **, char *, int);
155 void add_dlist(struct dirlist **, struct dirlist *,
156 struct grouplist *, int);
157 void add_mlist(char *, char *);
158 int check_dirpath(char *);
159 int check_options(struct dirlist *);
160 int chk_host(struct dirlist *, struct sockaddr *, int *, int *);
161 void del_mlist(char *, char *);
162 struct dirlist *dirp_search(struct dirlist *, char *);
163 int do_mount(struct exportlist *, struct grouplist *, int,
164 struct ucred *, char *, int, struct statfs *);
165 int do_opt(char **, char **, struct exportlist *, struct grouplist *,
166 int *, int *, struct ucred *);
167 struct exportlist *ex_search(fsid_t *);
168 struct exportlist *get_exp(void);
169 void free_dir(struct dirlist *);
170 void free_exp(struct exportlist *);
171 void free_grp(struct grouplist *);
172 void free_host(struct hostlist *);
173 void get_exportlist(void);
174 int get_host(char *, struct grouplist *, struct grouplist *);
175 struct hostlist *get_ht(void);
177 void get_mountlist(void);
178 int get_net(char *, struct netmsk *, int);
179 void getexp_err(struct exportlist *, struct grouplist *);
180 struct grouplist *get_grp(void);
181 void hang_dirp(struct dirlist *, struct grouplist *,
182 struct exportlist *, int);
183 void huphandler(int sig);
184 void mntsrv(struct svc_req *, SVCXPRT *);
185 void nextfield(char **, char **);
186 void out_of_mem(void);
187 void parsecred(char *, struct ucred *);
188 int put_exlist(struct dirlist *, XDR *, struct dirlist *, int *);
189 int scan_tree(struct dirlist *, struct sockaddr *);
190 static void usage(void);
191 int xdr_dir(XDR *, char *);
192 int xdr_explist(XDR *, caddr_t);
193 int xdr_fhs(XDR *, caddr_t);
194 int xdr_mlist(XDR *, caddr_t);
197 static int allones(struct sockaddr_storage *, int);
198 static int bitcmp(void *, void *, int);
199 static int countones(struct sockaddr *);
200 static int netpartcmp(struct sockaddr *, struct sockaddr *, int);
201 static int sacmp(struct sockaddr *, struct sockaddr *);
203 struct exportlist *exphead;
204 struct mountlist *mlhead;
205 struct grouplist *grphead;
206 char exname[MAXPATHLEN];
207 struct ucred def_anon = {
214 int resvport_only = 1;
220 static int have_v6 = 1;
221 #ifdef NI_WITHSCOPEID
222 static const int ninumeric = NI_NUMERICHOST | NI_WITHSCOPEID;
224 static const int ninumeric = NI_NUMERICHOST;
229 #define OP_MAPROOT 0x01
230 #define OP_MAPALL 0x02
234 #define OP_ALLDIRS 0x40
235 /* 0x80 is OP_HAVEMASK in FreeBSD 5+ */
236 #define OP_QUIET 0x100
237 #define OP_MASKLEN 0x200
241 void SYSLOG(int, const char *, ...);
242 #define syslog SYSLOG
248 * Mountd server for NFS mount protocol as described in:
249 * NFS: Network File System Protocol Specification, RFC1094, Appendix A
250 * The optional arguments are the exports file name
251 * default: _PATH_EXPORTS
252 * and "-n" to allow nonroot mount.
255 main(int argc, char **argv)
258 SVCXPRT *udptransp, *tcptransp, *udp6transp, *tcp6transp;
259 struct netconfig *udpconf, *tcpconf, *udp6conf, *tcp6conf;
260 int udpsock, tcpsock, udp6sock, tcp6sock;
263 int c, error, mib[3];
266 udp6conf = tcp6conf = NULL;
267 udp6sock = tcp6sock = 0;
269 /* Check that another mountd isn't already running. */
270 if ((mountdlockfd = (open(MOUNTDLOCK, O_RDONLY|O_CREAT, 0444))) == -1)
271 err(1, "%s", MOUNTDLOCK);
273 if(flock(mountdlockfd, LOCK_EX|LOCK_NB) == -1 && errno == EWOULDBLOCK)
274 errx(1, "another rpc.mountd is already running. Aborting");
275 s = socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP);
280 error = getvfsbyname("nfs", &vfc);
281 if (error && vfsisloadable("nfs")) {
283 err(1, "vfsload(nfs)");
284 endvfsent(); /* flush cache */
285 error = getvfsbyname("nfs", &vfc);
288 errx(1, "NFS support is not available in the running kernel");
290 while ((c = getopt(argc, argv, "2dlnr")) != -1)
302 debug = debug ? 0 : 1;
316 strncpy(exname, *argv, MAXPATHLEN-1);
317 exname[MAXPATHLEN-1] = '\0';
319 strcpy(exname, _PATH_EXPORTS);
320 openlog("mountd", LOG_PID, LOG_DAEMON);
322 warnx("getting export list");
325 warnx("getting mount list");
331 signal(SIGINT, SIG_IGN);
332 signal(SIGQUIT, SIG_IGN);
334 signal(SIGHUP, huphandler);
335 signal(SIGTERM, terminate);
336 { FILE *pidfile = fopen(_PATH_MOUNTDPID, "w");
337 if (pidfile != NULL) {
338 fprintf(pidfile, "%d\n", getpid());
342 rpcb_unset(RPCPROG_MNT, RPCMNT_VER1, NULL);
343 rpcb_unset(RPCPROG_MNT, RPCMNT_VER3, NULL);
344 udpsock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
345 tcpsock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
346 udpconf = getnetconfigent("udp");
347 tcpconf = getnetconfigent("tcp");
350 udp6sock = socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP);
351 tcp6sock = socket(AF_INET6, SOCK_STREAM, IPPROTO_TCP);
353 * We're doing host-based access checks here, so don't allow
354 * v4-in-v6 to confuse things. The kernel will disable it
355 * by default on NFS sockets too.
357 if (udp6sock != -1 && setsockopt(udp6sock, IPPROTO_IPV6,
358 IPV6_BINDV6ONLY, &one, sizeof one) < 0){
359 syslog(LOG_ERR, "can't disable v4-in-v6 on UDP socket");
362 if (tcp6sock != -1 && setsockopt(tcp6sock, IPPROTO_IPV6,
363 IPV6_BINDV6ONLY, &one, sizeof one) < 0){
364 syslog(LOG_ERR, "can't disable v4-in-v6 on UDP socket");
367 udp6conf = getnetconfigent("udp6");
368 tcp6conf = getnetconfigent("tcp6");
371 if (!resvport_only) {
373 mib[1] = vfc.vfc_typenum;
374 mib[2] = NFS_NFSPRIVPORT;
375 if (sysctl(mib, 3, NULL, NULL, &resvport_only,
376 sizeof(resvport_only)) != 0 && errno != ENOENT) {
377 syslog(LOG_ERR, "sysctl: %m");
381 if ((udptransp = svcudp_create(RPC_ANYSOCK)) == NULL ||
382 (tcptransp = svctcp_create(RPC_ANYSOCK, 0, 0)) == NULL) {
383 syslog(LOG_ERR, "can't create socket");
386 if (udpsock != -1 && udpconf != NULL) {
387 bindresvport(udpsock, NULL);
388 udptransp = svc_dg_create(udpsock, 0, 0);
389 if (udptransp != NULL) {
390 if (!svc_reg(udptransp, RPCPROG_MNT, RPCMNT_VER1,
392 syslog(LOG_WARNING, "can't register UDP RPCMNT_VER1 service");
396 if (!svc_reg(udptransp, RPCPROG_MNT, RPCMNT_VER3,
398 syslog(LOG_WARNING, "can't register UDP RPCMNT_VER3 service");
403 syslog(LOG_WARNING, "can't create UDP services");
406 if (tcpsock != -1 && tcpconf != NULL) {
407 bindresvport(tcpsock, NULL);
408 listen(tcpsock, SOMAXCONN);
409 tcptransp = svc_vc_create(tcpsock, 0, 0);
410 if (tcptransp != NULL) {
411 if (!svc_reg(tcptransp, RPCPROG_MNT, RPCMNT_VER1,
413 syslog(LOG_WARNING, "can't register TCP RPCMNT_VER1 service");
417 if (!svc_reg(tcptransp, RPCPROG_MNT, RPCMNT_VER3,
419 syslog(LOG_WARNING, "can't register TCP RPCMNT_VER3 service");
424 syslog(LOG_WARNING, "can't create TCP service");
427 if (have_v6 && udp6sock != -1 && udp6conf != NULL) {
428 bindresvport(udp6sock, NULL);
429 udp6transp = svc_dg_create(udp6sock, 0, 0);
430 if (udp6transp != NULL) {
431 if (!svc_reg(udp6transp, RPCPROG_MNT, RPCMNT_VER1,
433 syslog(LOG_WARNING, "can't register UDP6 RPCMNT_VER1 service");
437 if (!svc_reg(udp6transp, RPCPROG_MNT, RPCMNT_VER3,
439 syslog(LOG_WARNING, "can't register UDP6 RPCMNT_VER3 service");
444 syslog(LOG_WARNING, "can't create UDP6 service");
447 if (have_v6 && tcp6sock != -1 && tcp6conf != NULL) {
448 bindresvport(tcp6sock, NULL);
449 listen(tcp6sock, SOMAXCONN);
450 tcp6transp = svc_vc_create(tcp6sock, 0, 0);
451 if (tcp6transp != NULL) {
452 if (!svc_reg(tcp6transp, RPCPROG_MNT, RPCMNT_VER1,
454 syslog(LOG_WARNING, "can't register TCP6 RPCMNT_VER1 service");
458 if (!svc_reg(tcp6transp, RPCPROG_MNT, RPCMNT_VER3,
460 syslog(LOG_WARNING, "can't register TCP6 RPCMNT_VER3 service");
465 syslog(LOG_WARNING, "can't create TCP6 service");
469 syslog(LOG_ERR, "could not create any services");
473 /* Expand svc_run() here so that we can call get_exportlist(). */
480 switch (select(svc_maxfd + 1, &readfds, NULL, NULL, NULL)) {
484 syslog(LOG_ERR, "mountd died: select: %m");
489 svc_getreqset(&readfds);
498 "usage: mountd [-2] [-d] [-l] [-n] [-r] [export_file]\n");
503 * The mount rpc service
506 mntsrv(struct svc_req *rqstp, SVCXPRT *transp)
508 struct exportlist *ep;
514 char host[NI_MAXHOST], numerichost[NI_MAXHOST];
515 int lookup_failed = 1;
516 struct sockaddr *saddr;
518 char rpcpath[RPCMNT_PATHLEN + 1], dirpath[MAXPATHLEN];
519 int bad = 0, defset, hostset;
520 sigset_t sighup_mask;
522 sigemptyset(&sighup_mask);
523 sigaddset(&sighup_mask, SIGHUP);
524 saddr = svc_getrpccaller(transp)->buf;
525 switch (saddr->sa_family) {
527 sport = ntohs(((struct sockaddr_in6 *)saddr)->sin6_port);
530 sport = ntohs(((struct sockaddr_in *)saddr)->sin_port);
533 syslog(LOG_ERR, "request from unknown address family");
536 lookup_failed = getnameinfo(saddr, saddr->sa_len, host, sizeof host,
538 getnameinfo(saddr, saddr->sa_len, numerichost,
539 sizeof numerichost, NULL, 0, NI_NUMERICHOST);
541 switch (rqstp->rq_proc) {
543 if (!svc_sendreply(transp, (xdrproc_t)xdr_void, NULL))
544 syslog(LOG_ERR, "can't send reply");
547 if (sport >= IPPORT_RESERVED && resvport_only) {
549 "mount request from %s from unprivileged port",
551 svcerr_weakauth(transp);
554 if (!svc_getargs(transp, (xdrproc_t)xdr_dir, rpcpath)) {
555 syslog(LOG_NOTICE, "undecodable mount request from %s",
557 svcerr_decode(transp);
562 * Get the real pathname and make sure it is a directory
563 * or a regular file if the -r option was specified
566 if (realpath(rpcpath, dirpath) == NULL ||
567 stat(dirpath, &stb) < 0 ||
568 (!S_ISDIR(stb.st_mode) &&
569 (dir_only || !S_ISREG(stb.st_mode))) ||
570 statfs(dirpath, &fsb) < 0) {
571 chdir("/"); /* Just in case realpath doesn't */
573 "mount request from %s for non existent path %s",
574 numerichost, dirpath);
576 warnx("stat failed on %s", dirpath);
577 bad = ENOENT; /* We will send error reply later */
580 /* Check in the exports list */
581 sigprocmask(SIG_BLOCK, &sighup_mask, NULL);
582 ep = ex_search(&fsb.f_fsid);
583 hostset = defset = 0;
584 if (ep && (chk_host(ep->ex_defdir, saddr, &defset, &hostset) ||
585 ((dp = dirp_search(ep->ex_dirl, dirpath)) &&
586 chk_host(dp, saddr, &defset, &hostset)) ||
587 (defset && scan_tree(ep->ex_defdir, saddr) == 0 &&
588 scan_tree(ep->ex_dirl, saddr) == 0))) {
590 if (!svc_sendreply(transp, (xdrproc_t)xdr_long,
592 syslog(LOG_ERR, "can't send reply");
593 sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
596 if (hostset & DP_HOSTSET)
597 fhr.fhr_flag = hostset;
599 fhr.fhr_flag = defset;
600 fhr.fhr_vers = rqstp->rq_vers;
601 /* Get the file handle */
602 memset(&fhr.fhr_fh, 0, sizeof(nfsfh_t));
603 if (getfh(dirpath, (fhandle_t *)&fhr.fhr_fh) < 0) {
605 syslog(LOG_ERR, "can't get fh for %s", dirpath);
606 if (!svc_sendreply(transp, (xdrproc_t)xdr_long,
608 syslog(LOG_ERR, "can't send reply");
609 sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
612 if (!svc_sendreply(transp, (xdrproc_t)xdr_fhs, &fhr))
613 syslog(LOG_ERR, "can't send reply");
615 add_mlist(host, dirpath);
617 add_mlist(numerichost, dirpath);
619 warnx("mount successful");
622 "mount request succeeded from %s for %s",
623 numerichost, dirpath);
627 "mount request denied from %s for %s",
628 numerichost, dirpath);
631 if (bad && !svc_sendreply(transp, (xdrproc_t)xdr_long, &bad))
632 syslog(LOG_ERR, "can't send reply");
633 sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
636 if (!svc_sendreply(transp, (xdrproc_t)xdr_mlist, NULL))
637 syslog(LOG_ERR, "can't send reply");
640 "dump request succeeded from %s",
644 if (sport >= IPPORT_RESERVED && resvport_only) {
646 "umount request from %s from unprivileged port",
648 svcerr_weakauth(transp);
651 if (!svc_getargs(transp, (xdrproc_t)xdr_dir, rpcpath)) {
652 syslog(LOG_NOTICE, "undecodable umount request from %s",
654 svcerr_decode(transp);
657 if (realpath(rpcpath, dirpath) == NULL) {
658 syslog(LOG_NOTICE, "umount request from %s "
659 "for non existent path %s",
660 numerichost, dirpath);
662 if (!svc_sendreply(transp, (xdrproc_t)xdr_void, NULL))
663 syslog(LOG_ERR, "can't send reply");
665 del_mlist(host, dirpath);
666 del_mlist(numerichost, dirpath);
669 "umount request succeeded from %s for %s",
670 numerichost, dirpath);
673 if (sport >= IPPORT_RESERVED && resvport_only) {
675 "umountall request from %s from unprivileged port",
677 svcerr_weakauth(transp);
680 if (!svc_sendreply(transp, (xdrproc_t)xdr_void, NULL))
681 syslog(LOG_ERR, "can't send reply");
683 del_mlist(host, NULL);
684 del_mlist(numerichost, NULL);
687 "umountall request succeeded from %s",
691 if (!svc_sendreply(transp, (xdrproc_t)xdr_explist, NULL))
692 syslog(LOG_ERR, "can't send reply");
695 "export request succeeded from %s",
699 svcerr_noproc(transp);
705 * Xdr conversion for a dirpath string
708 xdr_dir(XDR *xdrsp, char *dirp)
710 return (xdr_string(xdrsp, &dirp, RPCMNT_PATHLEN));
714 * Xdr routine to generate file handle reply
717 xdr_fhs(XDR *xdrsp, caddr_t cp)
719 struct fhreturn *fhrp = (struct fhreturn *)cp;
720 u_long ok = 0, len, auth;
722 if (!xdr_long(xdrsp, &ok))
724 switch (fhrp->fhr_vers) {
726 return (xdr_opaque(xdrsp, (caddr_t)&fhrp->fhr_fh, NFSX_V2FH));
729 if (!xdr_long(xdrsp, &len))
731 if (!xdr_opaque(xdrsp, (caddr_t)&fhrp->fhr_fh, len))
733 if (fhrp->fhr_flag & DP_KERB)
734 auth = RPCAUTH_KERB4;
738 if (!xdr_long(xdrsp, &len))
740 return (xdr_long(xdrsp, &auth));
746 xdr_mlist(XDR *xdrsp, caddr_t cp)
748 struct mountlist *mlp;
755 if (!xdr_bool(xdrsp, &true))
757 strp = &mlp->ml_host[0];
758 if (!xdr_string(xdrsp, &strp, RPCMNT_NAMELEN))
760 strp = &mlp->ml_dirp[0];
761 if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN))
765 if (!xdr_bool(xdrsp, &false))
771 * Xdr conversion for export list
774 xdr_explist(XDR *xdrsp, caddr_t cp)
776 struct exportlist *ep;
779 sigset_t sighup_mask;
781 sigemptyset(&sighup_mask);
782 sigaddset(&sighup_mask, SIGHUP);
783 sigprocmask(SIG_BLOCK, &sighup_mask, NULL);
787 if (put_exlist(ep->ex_dirl, xdrsp, ep->ex_defdir, &putdef))
789 if (ep->ex_defdir && putdef == 0 &&
790 put_exlist(ep->ex_defdir, xdrsp, NULL,
795 sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
796 if (!xdr_bool(xdrsp, &false))
800 sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
805 * Called from xdr_explist() to traverse the tree and export the
809 put_exlist(struct dirlist *dp, XDR *xdrsp, struct dirlist *adp, int *putdefp)
811 struct grouplist *grp;
819 if (put_exlist(dp->dp_left, xdrsp, adp, putdefp))
821 if (!xdr_bool(xdrsp, &true))
824 if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN))
826 if (adp && !strcmp(dp->dp_dirp, adp->dp_dirp)) {
830 if ((dp->dp_flag & DP_DEFSET) == 0 &&
831 (gotalldir == 0 || (adp->dp_flag & DP_DEFSET) == 0)) {
835 if (grp->gr_type == GT_HOST) {
836 if (!xdr_bool(xdrsp, &true))
838 strp = grp->gr_ptr.gt_addrinfo->ai_canonname;
839 if (!xdr_string(xdrsp, &strp,
842 } else if (grp->gr_type == GT_NET) {
843 if (!xdr_bool(xdrsp, &true))
845 strp = grp->gr_ptr.gt_net.nt_name;
846 if (!xdr_string(xdrsp, &strp,
851 if (gotalldir && hp == NULL) {
857 if (!xdr_bool(xdrsp, &false))
859 if (put_exlist(dp->dp_right, xdrsp, adp, putdefp))
865 #define LINESIZ 10240
870 * Get the export list
875 struct exportlist *ep, *ep2;
876 struct grouplist *grp, *tgrp;
877 struct exportlist **epp;
878 struct dirlist *dirhead;
879 struct statfs fsb, *fsp;
881 char *cp, *endcp, *dirp, *hst, *usr, *dom, savedc;
882 int len, has_host, exflags, got_nondir, dirplen, num, i, netgrp;
888 * First, get rid of the old list
907 * And delete exports that are in the kernel for all local
909 * XXX: Should know how to handle all local exportable file systems
910 * instead of just "ufs".
912 num = getmntinfo(&fsp, MNT_NOWAIT);
913 for (i = 0; i < num; i++) {
918 struct msdosfs_args da;
921 struct export_args export;
923 export.ex_flags = MNT_DELEXPORT;
924 if (mountctl(fsp->f_mntonname, MOUNTCTL_SET_EXPORT, -1,
925 &export, sizeof(export), NULL, 0) == 0) {
926 } else if (!strcmp(fsp->f_fstypename, "mfs") ||
927 !strcmp(fsp->f_fstypename, "ufs") ||
928 !strcmp(fsp->f_fstypename, "msdos") ||
929 !strcmp(fsp->f_fstypename, "ntfs") ||
930 !strcmp(fsp->f_fstypename, "cd9660")) {
931 targs.ua.fspec = NULL;
932 targs.ua.export.ex_flags = MNT_DELEXPORT;
933 if (mount(fsp->f_fstypename, fsp->f_mntonname,
934 fsp->f_flags | MNT_UPDATE,
935 (caddr_t)&targs) < 0)
936 syslog(LOG_ERR, "can't delete exports for %s",
943 * Read in the exports file and build the list, calling
944 * mount() as we go along to push the export rules into the kernel.
946 if ((exp_file = fopen(exname, "r")) == NULL) {
947 syslog(LOG_ERR, "can't open %s", exname);
953 warnx("got line %s", line);
955 nextfield(&cp, &endcp);
964 exflags = MNT_EXPORTED;
970 * Create new exports list entry
973 tgrp = grp = get_grp();
975 if (len > RPCMNT_NAMELEN) {
976 getexp_err(ep, tgrp);
981 getexp_err(ep, tgrp);
985 warnx("doing opt %s", cp);
987 if (do_opt(&cp, &endcp, ep, grp, &has_host,
989 getexp_err(ep, tgrp);
992 } else if (*cp == '/') {
995 if (check_dirpath(cp) &&
996 statfs(cp, &fsb) >= 0) {
998 syslog(LOG_ERR, "dirs must be first");
999 getexp_err(ep, tgrp);
1003 if (ep->ex_fs.val[0] != fsb.f_fsid.val[0] ||
1004 ep->ex_fs.val[1] != fsb.f_fsid.val[1]) {
1005 getexp_err(ep, tgrp);
1010 * See if this directory is already
1013 ep = ex_search(&fsb.f_fsid);
1016 ep->ex_fs = fsb.f_fsid;
1017 ep->ex_fsdir = (char *)
1018 malloc(strlen(fsb.f_mntonname) + 1);
1020 strcpy(ep->ex_fsdir,
1025 warnx("making new ep fs=0x%x,0x%x",
1029 warnx("found ep fs=0x%x,0x%x",
1035 * Add dirpath to export mount point.
1037 dirp = add_expdir(&dirhead, cp, len);
1040 getexp_err(ep, tgrp);
1049 getexp_err(ep, tgrp);
1054 * Get the host or netgroup.
1057 netgrp = getnetgrent(&hst, &usr, &dom);
1060 grp->gr_next = get_grp();
1066 "null hostname in netgroup %s, skipping", cp);
1067 grp->gr_type = GT_IGNORE;
1068 } else if (get_host(hst, grp, tgrp)) {
1070 "bad host %s in netgroup %s, skipping", hst, cp);
1071 grp->gr_type = GT_IGNORE;
1073 } else if (get_host(cp, grp, tgrp)) {
1074 syslog(LOG_ERR, "bad host %s, skipping", cp);
1075 grp->gr_type = GT_IGNORE;
1078 } while (netgrp && getnetgrent(&hst, &usr, &dom));
1083 nextfield(&cp, &endcp);
1086 if (check_options(dirhead)) {
1087 getexp_err(ep, tgrp);
1091 grp->gr_type = GT_DEFAULT;
1093 warnx("adding a default entry");
1096 * Don't allow a network export coincide with a list of
1097 * host(s) on the same line.
1099 } else if ((opt_flags & OP_NET) && tgrp->gr_next) {
1100 getexp_err(ep, tgrp);
1104 * If an export list was specified on this line, make sure
1105 * that we have at least one valid entry, otherwise skip it.
1109 while (grp && grp->gr_type == GT_IGNORE)
1112 getexp_err(ep, tgrp);
1118 * Loop through hosts, pushing the exports into the kernel.
1119 * After loop, tgrp points to the start of the list and
1120 * grp points to the last entry in the list.
1124 if (do_mount(ep, grp, exflags, &anon, dirp, dirplen,
1126 getexp_err(ep, tgrp);
1129 } while (grp->gr_next && (grp = grp->gr_next));
1132 * Success. Update the data structures.
1135 hang_dirp(dirhead, tgrp, ep, opt_flags);
1136 grp->gr_next = grphead;
1139 hang_dirp(dirhead, NULL, ep,
1144 if ((ep->ex_flag & EX_LINKED) == 0) {
1149 * Insert in the list in alphabetical order.
1151 while (ep2 && strcmp(ep2->ex_fsdir, ep->ex_fsdir) < 0) {
1152 epp = &ep2->ex_next;
1158 ep->ex_flag |= EX_LINKED;
1170 * Allocate an export list element
1175 struct exportlist *ep;
1177 ep = (struct exportlist *)malloc(sizeof (struct exportlist));
1180 memset(ep, 0, sizeof(struct exportlist));
1185 * Allocate a group list element
1190 struct grouplist *gp;
1192 gp = (struct grouplist *)malloc(sizeof (struct grouplist));
1195 memset(gp, 0, sizeof(struct grouplist));
1200 * Clean up upon an error in get_exportlist().
1203 getexp_err(struct exportlist *ep, struct grouplist *grp)
1205 struct grouplist *tgrp;
1207 if (!(opt_flags & OP_QUIET))
1208 syslog(LOG_ERR, "bad exports list line %s", line);
1209 if (ep && (ep->ex_flag & EX_LINKED) == 0)
1219 * Search the export list for a matching fs.
1222 ex_search(fsid_t *fsid)
1224 struct exportlist *ep;
1228 if (ep->ex_fs.val[0] == fsid->val[0] &&
1229 ep->ex_fs.val[1] == fsid->val[1])
1237 * Add a directory path to the list.
1240 add_expdir(struct dirlist **dpp, char *cp, int len)
1244 dp = (struct dirlist *)malloc(sizeof (struct dirlist) + len);
1248 dp->dp_right = NULL;
1250 dp->dp_hosts = NULL;
1251 strcpy(dp->dp_dirp, cp);
1253 return (dp->dp_dirp);
1257 * Hang the dir list element off the dirpath binary tree as required
1258 * and update the entry for host.
1261 hang_dirp(struct dirlist *dp, struct grouplist *grp, struct exportlist *ep,
1264 struct hostlist *hp;
1265 struct dirlist *dp2;
1267 if (flags & OP_ALLDIRS) {
1273 ep->ex_defdir->dp_flag |= DP_DEFSET;
1274 if (flags & OP_KERB)
1275 ep->ex_defdir->dp_flag |= DP_KERB;
1276 } else while (grp) {
1278 if (flags & OP_KERB)
1279 hp->ht_flag |= DP_KERB;
1281 hp->ht_next = ep->ex_defdir->dp_hosts;
1282 ep->ex_defdir->dp_hosts = hp;
1288 * Loop through the directories adding them to the tree.
1292 add_dlist(&ep->ex_dirl, dp, grp, flags);
1299 * Traverse the binary tree either updating a node that is already there
1300 * for the new directory or adding the new node.
1303 add_dlist(struct dirlist **dpp, struct dirlist *newdp, struct grouplist *grp,
1307 struct hostlist *hp;
1312 cmp = strcmp(dp->dp_dirp, newdp->dp_dirp);
1314 add_dlist(&dp->dp_left, newdp, grp, flags);
1316 } else if (cmp < 0) {
1317 add_dlist(&dp->dp_right, newdp, grp, flags);
1320 free((caddr_t)newdp);
1329 * Hang all of the host(s) off of the directory point.
1333 if (flags & OP_KERB)
1334 hp->ht_flag |= DP_KERB;
1336 hp->ht_next = dp->dp_hosts;
1341 dp->dp_flag |= DP_DEFSET;
1342 if (flags & OP_KERB)
1343 dp->dp_flag |= DP_KERB;
1348 * Search for a dirpath on the export point.
1351 dirp_search(struct dirlist *dp, char *dirp)
1356 cmp = strcmp(dp->dp_dirp, dirp);
1358 return (dirp_search(dp->dp_left, dirp));
1360 return (dirp_search(dp->dp_right, dirp));
1368 * Some helper functions for netmasks. They all assume masks in network
1369 * order (big endian).
1372 bitcmp(void *dst, void *src, int bitlen)
1375 u_int8_t *p1 = dst, *p2 = src;
1377 int bytelen, bitsleft;
1379 bytelen = bitlen / 8;
1380 bitsleft = bitlen % 8;
1383 printf("comparing:\n");
1384 for (i = 0; i < (bitsleft ? bytelen + 1 : bytelen); i++)
1385 printf("%02x", p1[i]);
1387 for (i = 0; i < (bitsleft ? bytelen + 1 : bytelen); i++)
1388 printf("%02x", p2[i]);
1392 for (i = 0; i < bytelen; i++) {
1399 for (i = 0; i < bitsleft; i++) {
1400 bitmask = 1 << (7 - i);
1401 if ((*p1 & bitmask) != (*p2 & bitmask))
1409 * Scan for a host match in a directory tree.
1412 chk_host(struct dirlist *dp, struct sockaddr *saddr, int *defsetp,
1415 struct hostlist *hp;
1416 struct grouplist *grp;
1417 struct addrinfo *ai;
1420 if (dp->dp_flag & DP_DEFSET)
1421 *defsetp = dp->dp_flag;
1425 switch (grp->gr_type) {
1427 ai = grp->gr_ptr.gt_addrinfo;
1428 for (; ai; ai = ai->ai_next) {
1429 if (!sacmp(ai->ai_addr, saddr)) {
1431 (hp->ht_flag | DP_HOSTSET);
1437 if (!netpartcmp(saddr,
1438 (struct sockaddr *) &grp->gr_ptr.gt_net.nt_net,
1439 grp->gr_ptr.gt_net.nt_mask)) {
1440 *hostsetp = (hp->ht_flag | DP_HOSTSET);
1452 * Scan tree for a host that matches the address.
1455 scan_tree(struct dirlist *dp, struct sockaddr *saddr)
1457 int defset, hostset;
1460 if (scan_tree(dp->dp_left, saddr))
1462 if (chk_host(dp, saddr, &defset, &hostset))
1464 if (scan_tree(dp->dp_right, saddr))
1471 * Traverse the dirlist tree and free it up.
1474 free_dir(struct dirlist *dp)
1478 free_dir(dp->dp_left);
1479 free_dir(dp->dp_right);
1480 free_host(dp->dp_hosts);
1486 * Parse the option string and update fields.
1487 * Option arguments may either be -<option>=<value> or
1491 do_opt(char **cpp, char **endcpp, struct exportlist *ep, struct grouplist *grp,
1492 int *has_hostp, int *exflagsp, struct ucred *cr)
1494 char *cpoptarg, *cpoptend;
1495 char *cp, *endcp, *cpopt, savedc, savedc2;
1496 int allflag, usedarg;
1504 while (cpopt && *cpopt) {
1507 if ((cpoptend = strchr(cpopt, ','))) {
1509 if ((cpoptarg = strchr(cpopt, '=')))
1512 if ((cpoptarg = strchr(cpopt, '=')))
1516 nextfield(&cp, &endcp);
1518 if (endcp > cp && *cp != '-') {
1526 if (!strcmp(cpopt, "ro") || !strcmp(cpopt, "o")) {
1527 *exflagsp |= MNT_EXRDONLY;
1528 } else if (cpoptarg && (!strcmp(cpopt, "maproot") ||
1529 !(allflag = strcmp(cpopt, "mapall")) ||
1530 !strcmp(cpopt, "root") || !strcmp(cpopt, "r"))) {
1532 parsecred(cpoptarg, cr);
1534 *exflagsp |= MNT_EXPORTANON;
1535 opt_flags |= OP_MAPALL;
1537 opt_flags |= OP_MAPROOT;
1538 } else if (!strcmp(cpopt, "kerb") || !strcmp(cpopt, "k")) {
1539 *exflagsp |= MNT_EXKERB;
1540 opt_flags |= OP_KERB;
1541 } else if (cpoptarg && (!strcmp(cpopt, "mask") ||
1542 !strcmp(cpopt, "m"))) {
1543 if (get_net(cpoptarg, &grp->gr_ptr.gt_net, 1)) {
1544 syslog(LOG_ERR, "bad mask: %s", cpoptarg);
1548 opt_flags |= OP_MASK;
1549 } else if (cpoptarg && (!strcmp(cpopt, "network") ||
1550 !strcmp(cpopt, "n"))) {
1551 if (strchr(cpoptarg, '/') != NULL) {
1553 fprintf(stderr, "setting OP_MASKLEN\n");
1554 opt_flags |= OP_MASKLEN;
1556 if (grp->gr_type != GT_NULL) {
1557 syslog(LOG_ERR, "network/host conflict");
1559 } else if (get_net(cpoptarg, &grp->gr_ptr.gt_net, 0)) {
1560 syslog(LOG_ERR, "bad net: %s", cpoptarg);
1563 grp->gr_type = GT_NET;
1566 opt_flags |= OP_NET;
1567 } else if (!strcmp(cpopt, "alldirs")) {
1568 opt_flags |= OP_ALLDIRS;
1569 } else if (!strcmp(cpopt, "public")) {
1570 *exflagsp |= MNT_EXPUBLIC;
1571 } else if (!strcmp(cpopt, "webnfs")) {
1572 *exflagsp |= (MNT_EXPUBLIC|MNT_EXRDONLY|MNT_EXPORTANON);
1573 opt_flags |= OP_MAPALL;
1574 } else if (cpoptarg && !strcmp(cpopt, "index")) {
1575 ep->ex_indexfile = strdup(cpoptarg);
1576 } else if (!strcmp(cpopt, "quiet")) {
1577 opt_flags |= OP_QUIET;
1579 syslog(LOG_ERR, "bad opt %s", cpopt);
1598 * Translate a character string to the corresponding list of network
1599 * addresses for a hostname.
1602 get_host(char *cp, struct grouplist *grp, struct grouplist *tgrp)
1604 struct grouplist *checkgrp;
1605 struct addrinfo *ai, *tai, hints;
1607 char host[NI_MAXHOST];
1609 if (grp->gr_type != GT_NULL) {
1610 syslog(LOG_ERR, "Bad netgroup type for ip host %s", cp);
1613 memset(&hints, 0, sizeof hints);
1614 hints.ai_flags = AI_CANONNAME;
1615 hints.ai_protocol = IPPROTO_UDP;
1616 ecode = getaddrinfo(cp, NULL, &hints, &ai);
1618 syslog(LOG_ERR,"can't get address info for host %s", cp);
1621 grp->gr_ptr.gt_addrinfo = ai;
1622 while (ai != NULL) {
1623 if (ai->ai_canonname == NULL) {
1624 if (getnameinfo(ai->ai_addr, ai->ai_addrlen, host,
1625 sizeof host, NULL, 0, ninumeric) != 0)
1626 strlcpy(host, "?", sizeof(host));
1627 ai->ai_canonname = strdup(host);
1628 ai->ai_flags |= AI_CANONNAME;
1631 fprintf(stderr, "got host %s\n", ai->ai_canonname);
1633 * Sanity check: make sure we don't already have an entry
1634 * for this host in the grouplist.
1636 for (checkgrp = tgrp; checkgrp != NULL;
1637 checkgrp = checkgrp->gr_next) {
1638 if (checkgrp->gr_type != GT_HOST)
1640 for (tai = checkgrp->gr_ptr.gt_addrinfo; tai != NULL;
1641 tai = tai->ai_next) {
1642 if (sacmp(tai->ai_addr, ai->ai_addr) != 0)
1646 "ignoring duplicate host %s\n",
1648 grp->gr_type = GT_IGNORE;
1654 grp->gr_type = GT_HOST;
1659 * Free up an exports list component
1662 free_exp(struct exportlist *ep)
1665 if (ep->ex_defdir) {
1666 free_host(ep->ex_defdir->dp_hosts);
1667 free((caddr_t)ep->ex_defdir);
1671 if (ep->ex_indexfile)
1672 free(ep->ex_indexfile);
1673 free_dir(ep->ex_dirl);
1681 free_host(struct hostlist *hp)
1683 struct hostlist *hp2;
1695 struct hostlist *hp;
1697 hp = (struct hostlist *)malloc(sizeof (struct hostlist));
1706 * Out of memory, fatal
1712 syslog(LOG_ERR, "out of memory");
1717 * Do the mount syscall with the update flag to push the export info into
1721 do_mount(struct exportlist *ep, struct grouplist *grp, int exflags,
1722 struct ucred *anoncrp, char *dirp, int dirplen, struct statfs *fsb)
1725 struct sockaddr_storage ss;
1726 struct addrinfo *ai;
1735 struct msdosfs_args da;
1736 struct adosfs_args aa;
1738 struct ntfs_args na;
1742 args.ua.export.ex_flags = exflags;
1743 args.ua.export.ex_anon = *anoncrp;
1744 args.ua.export.ex_indexfile = ep->ex_indexfile;
1745 if (grp->gr_type == GT_HOST)
1746 ai = grp->gr_ptr.gt_addrinfo;
1751 switch (grp->gr_type) {
1753 if (ai->ai_addr->sa_family == AF_INET6 && have_v6 == 0)
1755 args.ua.export.ex_addr = ai->ai_addr;
1756 args.ua.export.ex_addrlen = ai->ai_addrlen;
1757 args.ua.export.ex_masklen = 0;
1760 args.ua.export.ex_addr = (struct sockaddr *)
1761 &grp->gr_ptr.gt_net.nt_net;
1762 if (args.ua.export.ex_addr->sa_family == AF_INET6 &&
1765 args.ua.export.ex_addrlen =
1766 args.ua.export.ex_addr->sa_len;
1767 memset(&ss, 0, sizeof ss);
1768 ss.ss_family = args.ua.export.ex_addr->sa_family;
1769 ss.ss_len = args.ua.export.ex_addr->sa_len;
1770 if (allones(&ss, grp->gr_ptr.gt_net.nt_mask) != 0) {
1771 syslog(LOG_ERR, "Bad network flag");
1776 args.ua.export.ex_mask = (struct sockaddr *)&ss;
1777 args.ua.export.ex_masklen = ss.ss_len;
1780 args.ua.export.ex_addr = NULL;
1781 args.ua.export.ex_addrlen = 0;
1782 args.ua.export.ex_mask = NULL;
1783 args.ua.export.ex_masklen = 0;
1789 syslog(LOG_ERR, "bad grouptype");
1797 * Maybe I should just use the fsb->f_mntonname path instead
1798 * of looping back up the dirp to the mount point??
1799 * Also, needs to know how to export all types of local
1800 * exportable file systems and not just "ufs".
1805 r = mountctl(fsb->f_mntonname, MOUNTCTL_SET_EXPORT,
1807 &args.ua.export, sizeof(args.ua.export),
1809 if (r < 0 && errno == EOPNOTSUPP) {
1810 r = mount(fsb->f_fstypename, dirp,
1811 fsb->f_flags | MNT_UPDATE,
1819 cp = dirp + dirplen - 1;
1820 if (opt_flags & OP_QUIET)
1822 if (errno == EPERM) {
1824 warnx("can't change attributes for %s",
1827 "can't change attributes for %s", dirp);
1830 if (opt_flags & OP_ALLDIRS) {
1831 if (errno == EINVAL)
1833 "-alldirs requested but %s is not a filesystem mountpoint",
1837 "could not remount %s: %m",
1841 /* back up over the last component */
1842 while (*cp == '/' && cp > dirp)
1844 while (*(cp - 1) != '/' && cp > dirp)
1848 warnx("mnt unsucc");
1849 syslog(LOG_ERR, "can't export %s", dirp);
1854 /* Check that we're still on the same filesystem. */
1855 if (statfs(dirp, &fsb1) != 0 || bcmp(&fsb1.f_fsid,
1856 &fsb->f_fsid, sizeof(fsb1.f_fsid)) != 0) {
1858 syslog(LOG_ERR, "can't export %s", dirp);
1874 * Translate a net address.
1877 get_net(char *cp, struct netmsk *net, int maskflg)
1880 char *name, *p, *prefp;
1881 struct sockaddr_in sin, *sinp;
1882 struct sockaddr *sa;
1883 struct addrinfo hints, *ai = NULL;
1884 char netname[NI_MAXHOST];
1889 if ((opt_flags & OP_MASKLEN) && !maskflg) {
1890 p = strchr(cp, '/');
1895 if ((np = getnetbyname(cp)) != NULL) {
1896 sin.sin_family = AF_INET;
1897 sin.sin_len = sizeof sin;
1898 sin.sin_addr = inet_makeaddr(np->n_net, 0);
1899 sa = (struct sockaddr *)&sin;
1900 } else if (isdigit(*cp)) {
1901 memset(&hints, 0, sizeof hints);
1902 hints.ai_family = AF_UNSPEC;
1903 hints.ai_flags = AI_NUMERICHOST;
1904 if (getaddrinfo(cp, NULL, &hints, &ai) != 0) {
1906 * If getaddrinfo() failed, try the inet4 network
1907 * notation with less than 3 dots.
1909 sin.sin_family = AF_INET;
1910 sin.sin_len = sizeof sin;
1911 sin.sin_addr = inet_makeaddr(inet_network(cp),0);
1913 fprintf(stderr, "get_net: v4 addr %x\n",
1914 sin.sin_addr.s_addr);
1915 sa = (struct sockaddr *)&sin;
1918 } else if (isxdigit(*cp) || *cp == ':') {
1919 memset(&hints, 0, sizeof hints);
1920 hints.ai_family = AF_UNSPEC;
1921 hints.ai_flags = AI_NUMERICHOST;
1922 if (getaddrinfo(cp, NULL, &hints, &ai) == 0)
1929 ecode = getnameinfo(sa, sa->sa_len, netname, sizeof netname,
1930 NULL, 0, ninumeric);
1935 net->nt_mask = countones(sa);
1937 if (opt_flags & OP_MASKLEN) {
1938 preflen = strtol(prefp, NULL, 10);
1939 if (preflen == LONG_MIN && errno == ERANGE)
1941 net->nt_mask = (int)preflen;
1948 if (getnameinfo(sa, sa->sa_len, netname, sizeof netname,
1949 NULL, 0, ninumeric) != 0)
1950 strlcpy(netname, "?", sizeof(netname));
1953 net->nt_name = strdup(name);
1954 memcpy(&net->nt_net, sa, sa->sa_len);
1957 if (!maskflg && sa->sa_family == AF_INET &&
1958 !(opt_flags & (OP_MASK|OP_MASKLEN))) {
1959 sinp = (struct sockaddr_in *)sa;
1960 if (IN_CLASSA(sinp->sin_addr.s_addr))
1962 else if (IN_CLASSB(sinp->sin_addr.s_addr))
1964 else if (IN_CLASSC(sinp->sin_addr.s_addr))
1966 else if (IN_CLASSD(sinp->sin_addr.s_addr))
1969 net->nt_mask = 32; /* XXX */
1983 * Parse out the next white space separated field
1986 nextfield(char **cp, char **endcp)
1991 while (*p == ' ' || *p == '\t')
1993 if (*p == '\n' || *p == '\0')
1997 while (*p != ' ' && *p != '\t' && *p != '\n' && *p != '\0')
2004 * Get an exports file line. Skip over blank lines and handle line
2012 int totlen, cont_line;
2015 * Loop around ignoring blank lines and getting all continuation lines.
2020 if (fgets(p, LINESIZ - totlen, exp_file) == NULL)
2026 (*cp == ' ' || *cp == '\t' || *cp == '\n' || *cp == '\\')) {
2039 if (totlen >= LINESIZ) {
2040 syslog(LOG_ERR, "exports line too long");
2045 } while (totlen == 0 || cont_line);
2050 * Parse a description of a credential.
2053 parsecred(char *namelist, struct ucred *cr)
2060 int ngroups, groups[NGROUPS + 1];
2063 * Set up the unprivileged user.
2067 cr->cr_groups[0] = -2;
2070 * Get the user's password table entry.
2072 names = strsep(&namelist, " \t\n");
2073 name = strsep(&names, ":");
2074 if (isdigit(*name) || *name == '-')
2075 pw = getpwuid(atoi(name));
2077 pw = getpwnam(name);
2079 * Credentials specified as those of a user.
2081 if (names == NULL) {
2083 syslog(LOG_ERR, "unknown user: %s", name);
2086 cr->cr_uid = pw->pw_uid;
2087 ngroups = NGROUPS + 1;
2088 if (getgrouplist(pw->pw_name, pw->pw_gid, groups, &ngroups))
2089 syslog(LOG_ERR, "too many groups");
2091 * Convert from int's to gid_t's and compress out duplicate
2093 cr->cr_ngroups = ngroups - 1;
2094 cr->cr_groups[0] = groups[0];
2095 for (cnt = 2; cnt < ngroups; cnt++)
2096 cr->cr_groups[cnt - 1] = groups[cnt];
2100 * Explicit credential specified as a colon separated list:
2104 cr->cr_uid = pw->pw_uid;
2105 else if (isdigit(*name) || *name == '-')
2106 cr->cr_uid = atoi(name);
2108 syslog(LOG_ERR, "unknown user: %s", name);
2112 while (names != NULL && *names != '\0' && cr->cr_ngroups < NGROUPS) {
2113 name = strsep(&names, ":");
2114 if (isdigit(*name) || *name == '-') {
2115 cr->cr_groups[cr->cr_ngroups++] = atoi(name);
2117 if ((gr = getgrnam(name)) == NULL) {
2118 syslog(LOG_ERR, "unknown group: %s", name);
2121 cr->cr_groups[cr->cr_ngroups++] = gr->gr_gid;
2124 if (names != NULL && *names != '\0' && cr->cr_ngroups == NGROUPS)
2125 syslog(LOG_ERR, "too many groups");
2128 #define STRSIZ (RPCMNT_NAMELEN+RPCMNT_PATHLEN+50)
2130 * Routines that maintain the remote mounttab
2135 struct mountlist *mlp, **mlpp;
2136 char *host, *dirp, *cp;
2140 if ((mlfile = fopen(_PATH_RMOUNTLIST, "r")) == NULL) {
2141 if (errno == ENOENT)
2144 syslog(LOG_ERR, "can't open %s", _PATH_RMOUNTLIST);
2149 while (fgets(str, STRSIZ, mlfile) != NULL) {
2151 host = strsep(&cp, " \t\n");
2152 dirp = strsep(&cp, " \t\n");
2153 if (host == NULL || dirp == NULL)
2155 mlp = (struct mountlist *)malloc(sizeof (*mlp));
2158 strncpy(mlp->ml_host, host, RPCMNT_NAMELEN);
2159 mlp->ml_host[RPCMNT_NAMELEN] = '\0';
2160 strncpy(mlp->ml_dirp, dirp, RPCMNT_PATHLEN);
2161 mlp->ml_dirp[RPCMNT_PATHLEN] = '\0';
2162 mlp->ml_next = NULL;
2164 mlpp = &mlp->ml_next;
2170 del_mlist(char *hostp, char *dirp)
2172 struct mountlist *mlp, **mlpp;
2173 struct mountlist *mlp2;
2180 if (!strcmp(mlp->ml_host, hostp) &&
2181 (!dirp || !strcmp(mlp->ml_dirp, dirp))) {
2184 *mlpp = mlp = mlp->ml_next;
2185 free((caddr_t)mlp2);
2187 mlpp = &mlp->ml_next;
2192 if ((mlfile = fopen(_PATH_RMOUNTLIST, "w")) == NULL) {
2193 syslog(LOG_ERR,"can't update %s", _PATH_RMOUNTLIST);
2198 fprintf(mlfile, "%s %s\n", mlp->ml_host, mlp->ml_dirp);
2206 add_mlist(char *hostp, char *dirp)
2208 struct mountlist *mlp, **mlpp;
2214 if (!strcmp(mlp->ml_host, hostp) && !strcmp(mlp->ml_dirp, dirp))
2216 mlpp = &mlp->ml_next;
2219 mlp = (struct mountlist *)malloc(sizeof (*mlp));
2222 strncpy(mlp->ml_host, hostp, RPCMNT_NAMELEN);
2223 mlp->ml_host[RPCMNT_NAMELEN] = '\0';
2224 strncpy(mlp->ml_dirp, dirp, RPCMNT_PATHLEN);
2225 mlp->ml_dirp[RPCMNT_PATHLEN] = '\0';
2226 mlp->ml_next = NULL;
2228 if ((mlfile = fopen(_PATH_RMOUNTLIST, "a")) == NULL) {
2229 syslog(LOG_ERR, "can't update %s", _PATH_RMOUNTLIST);
2232 fprintf(mlfile, "%s %s\n", mlp->ml_host, mlp->ml_dirp);
2237 * Free up a group list.
2240 free_grp(struct grouplist *grp)
2242 if (grp->gr_type == GT_HOST) {
2243 if (grp->gr_ptr.gt_addrinfo != NULL)
2244 freeaddrinfo(grp->gr_ptr.gt_addrinfo);
2245 } else if (grp->gr_type == GT_NET) {
2246 if (grp->gr_ptr.gt_net.nt_name)
2247 free(grp->gr_ptr.gt_net.nt_name);
2254 SYSLOG(int pri, const char *fmt, ...)
2259 vfprintf(stderr, fmt, ap);
2265 * Check options for consistency.
2268 check_options(struct dirlist *dp)
2273 if ((opt_flags & (OP_MAPROOT | OP_MAPALL)) == (OP_MAPROOT | OP_MAPALL) ||
2274 (opt_flags & (OP_MAPROOT | OP_KERB)) == (OP_MAPROOT | OP_KERB) ||
2275 (opt_flags & (OP_MAPALL | OP_KERB)) == (OP_MAPALL | OP_KERB)) {
2276 syslog(LOG_ERR, "-mapall, -maproot and -kerb mutually exclusive");
2279 if ((opt_flags & OP_MASK) && (opt_flags & OP_NET) == 0) {
2280 syslog(LOG_ERR, "-mask requires -network");
2283 if ((opt_flags & OP_ALLDIRS) && dp->dp_left) {
2284 syslog(LOG_ERR, "-alldirs has multiple directories");
2291 * Check an absolute directory path for any symbolic links. Return true
2294 check_dirpath(char *dirp)
2301 while (*cp && ret) {
2304 if (lstat(dirp, &sb) < 0 || !S_ISDIR(sb.st_mode))
2310 if (lstat(dirp, &sb) < 0 || !S_ISDIR(sb.st_mode))
2316 netpartcmp(struct sockaddr *s1, struct sockaddr *s2, int bitlen)
2320 if (s1->sa_family != s2->sa_family)
2323 switch (s1->sa_family) {
2325 src = &((struct sockaddr_in *)s1)->sin_addr;
2326 dst = &((struct sockaddr_in *)s2)->sin_addr;
2327 if (bitlen > sizeof(((struct sockaddr_in *)s1)->sin_addr) * 8)
2331 src = &((struct sockaddr_in6 *)s1)->sin6_addr;
2332 dst = &((struct sockaddr_in6 *)s2)->sin6_addr;
2333 if (((struct sockaddr_in6 *)s1)->sin6_scope_id !=
2334 ((struct sockaddr_in6 *)s2)->sin6_scope_id)
2336 if (bitlen > sizeof(((struct sockaddr_in6 *)s1)->sin6_addr) * 8)
2343 return bitcmp(src, dst, bitlen);
2347 allones(struct sockaddr_storage *ssp, int bitlen)
2350 int bytelen, bitsleft, i;
2353 switch (ssp->ss_family) {
2355 p = (u_int8_t *)&((struct sockaddr_in *)ssp)->sin_addr;
2356 zerolen = sizeof (((struct sockaddr_in *)ssp)->sin_addr);
2359 p = (u_int8_t *)&((struct sockaddr_in6 *)ssp)->sin6_addr;
2360 zerolen = sizeof (((struct sockaddr_in6 *)ssp)->sin6_addr);
2366 memset(p, 0, zerolen);
2368 bytelen = bitlen / 8;
2369 bitsleft = bitlen % 8;
2371 if (bytelen > zerolen)
2374 for (i = 0; i < bytelen; i++)
2377 for (i = 0; i < bitsleft; i++)
2384 countones(struct sockaddr *sa)
2387 int i, bits = 0, bytelen;
2390 switch (sa->sa_family) {
2392 mask = (u_int8_t *)&((struct sockaddr_in *)sa)->sin_addr;
2396 mask = (u_int8_t *)&((struct sockaddr_in6 *)sa)->sin6_addr;
2405 for (i = 0; i < bytelen; i++, p++) {
2407 for (bits = 0; bits < 8; bits++) {
2408 if (!(*p & (1 << (7 - bits))))
2415 return (i * 8 + bits);
2419 sacmp(struct sockaddr *sa1, struct sockaddr *sa2)
2424 if (sa1->sa_family != sa2->sa_family)
2427 switch (sa1->sa_family) {
2429 p1 = &((struct sockaddr_in *)sa1)->sin_addr;
2430 p2 = &((struct sockaddr_in *)sa2)->sin_addr;
2434 p1 = &((struct sockaddr_in6 *)sa1)->sin6_addr;
2435 p2 = &((struct sockaddr_in6 *)sa2)->sin6_addr;
2437 if (((struct sockaddr_in6 *)sa1)->sin6_scope_id !=
2438 ((struct sockaddr_in6 *)sa2)->sin6_scope_id)
2445 return memcmp(p1, p2, len);
2457 close(mountdlockfd);
2459 rpcb_unset(RPCPROG_MNT, RPCMNT_VER1, NULL);
2460 rpcb_unset(RPCPROG_MNT, RPCMNT_VER3, NULL);