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. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * @(#) Copyright (c) 1989, 1993 The Regents of the University of California. All rights reserved.
33 * @(#)mountd.c 8.15 (Berkeley) 5/1/95
34 * $FreeBSD: src/sbin/mountd/mountd.c,v 1.39.2.5 2002/09/13 15:57:43 joerg Exp $
37 #include <sys/param.h>
38 #include <sys/mount.h>
39 #include <sys/mountctl.h>
40 #include <sys/fcntl.h>
42 #include <sys/syslog.h>
43 #include <sys/sysctl.h>
46 #include <rpc/pmap_clnt.h>
47 #include <rpc/pmap_prot.h>
48 #include <rpcsvc/mount.h>
49 #include <vfs/nfs/rpcv2.h>
50 #include <vfs/nfs/nfsproto.h>
51 #include <vfs/nfs/nfs.h>
52 #include <vfs/ufs/ufsmount.h>
53 #include <vfs/msdosfs/msdosfsmount.h>
54 #include <vfs/ntfs/ntfsmount.h>
55 #include <vfs/isofs/cd9660/cd9660_mount.h> /* XXX need isofs in include */
57 #include <arpa/inet.h>
71 #include "pathnames.h"
78 * Structures for keeping the mount list and export list
81 struct mountlist *ml_next;
82 char ml_host[RPCMNT_NAMELEN+1];
83 char ml_dirp[RPCMNT_PATHLEN+1];
87 struct dirlist *dp_left;
88 struct dirlist *dp_right;
90 struct hostlist *dp_hosts; /* List of hosts this dir exported to */
91 char dp_dirp[1]; /* Actually malloc'd to size of dir */
95 #define DP_HOSTSET 0x2
99 struct exportlist *ex_next;
100 struct dirlist *ex_dirl;
101 struct dirlist *ex_defdir;
108 #define EX_LINKED 0x1
111 struct sockaddr_storage nt_net;
117 struct addrinfo *gt_addrinfo;
118 struct netmsk gt_net;
123 union grouptypes gr_ptr;
124 struct grouplist *gr_next;
130 #define GT_DEFAULT 0x3
131 #define GT_IGNORE 0x5
134 int ht_flag; /* Uses DP_xx bits */
135 struct grouplist *ht_grp;
136 struct hostlist *ht_next;
146 char *add_expdir(struct dirlist **, char *, int);
147 void add_dlist(struct dirlist **, struct dirlist *,
148 struct grouplist *, int);
149 void add_mlist(char *, char *);
150 int check_dirpath(char *);
151 int check_options(struct dirlist *);
152 int chk_host(struct dirlist *, struct sockaddr *, int *, int *);
153 void del_mlist(char *, char *);
154 struct dirlist *dirp_search(struct dirlist *, char *);
155 int do_mount(struct exportlist *, struct grouplist *, int,
156 struct ucred *, char *, int, struct statfs *);
157 int do_opt(char **, char **, struct exportlist *, struct grouplist *,
158 int *, int *, struct ucred *);
159 struct exportlist *ex_search(fsid_t *);
160 struct exportlist *get_exp(void);
161 void free_dir(struct dirlist *);
162 void free_exp(struct exportlist *);
163 void free_grp(struct grouplist *);
164 void free_host(struct hostlist *);
165 void get_exportlist(void);
166 int get_host(char *, struct grouplist *, struct grouplist *);
167 struct hostlist *get_ht(void);
169 void get_mountlist(void);
170 int get_net(char *, struct netmsk *, int);
171 void getexp_err(struct exportlist *, struct grouplist *);
172 struct grouplist *get_grp(void);
173 void hang_dirp(struct dirlist *, struct grouplist *,
174 struct exportlist *, int);
175 void huphandler(int sig);
176 void mntsrv(struct svc_req *, SVCXPRT *);
177 void nextfield(char **, char **);
178 void out_of_mem(void);
179 void parsecred(char *, struct ucred *);
180 int put_exlist(struct dirlist *, XDR *, struct dirlist *, int *);
181 int scan_tree(struct dirlist *, struct sockaddr *);
182 static void usage(void);
183 int xdr_dir(XDR *, char *);
184 int xdr_explist(XDR *, caddr_t);
185 int xdr_fhs(XDR *, caddr_t);
186 int xdr_mlist(XDR *, caddr_t);
189 static int allones(struct sockaddr_storage *, int);
190 static int bitcmp(void *, void *, int);
191 static int countones(struct sockaddr *);
192 static int netpartcmp(struct sockaddr *, struct sockaddr *, int);
193 static int sacmp(struct sockaddr *, struct sockaddr *);
195 struct exportlist *exphead;
196 struct mountlist *mlhead;
197 struct grouplist *grphead;
198 char exname[MAXPATHLEN];
199 struct ucred def_anon = {
206 int resvport_only = 1;
212 static int have_v6 = 1;
213 #ifdef NI_WITHSCOPEID
214 static const int ninumeric = NI_NUMERICHOST | NI_WITHSCOPEID;
216 static const int ninumeric = NI_NUMERICHOST;
219 struct pidfh *pfh = NULL;
221 #define OP_MAPROOT 0x01
222 #define OP_MAPALL 0x02
226 #define OP_ALLDIRS 0x40
227 /* 0x80 is OP_HAVEMASK in FreeBSD 5+ */
228 #define OP_QUIET 0x100
229 #define OP_MASKLEN 0x200
233 void SYSLOG(int, const char *, ...);
234 #define syslog SYSLOG
240 * Mountd server for NFS mount protocol as described in:
241 * NFS: Network File System Protocol Specification, RFC1094, Appendix A
242 * The optional arguments are the exports file name
243 * default: _PATH_EXPORTS
244 * and "-n" to allow nonroot mount.
247 main(int argc, char **argv)
250 SVCXPRT *udptransp, *tcptransp, *udp6transp, *tcp6transp;
251 struct netconfig *udpconf, *tcpconf, *udp6conf, *tcp6conf;
253 int udpsock, tcpsock, udp6sock, tcp6sock;
256 int c, error, mib[3];
259 udp6conf = tcp6conf = NULL;
260 udp6sock = tcp6sock = 0;
262 /* Check that another mountd isn't already running. */
263 pfh = pidfile_open(_PATH_MOUNTDPID, 0600, &otherpid);
266 errx(1, "mountd already running, pid: %d.", otherpid);
267 warn("cannot open or create pidfile");
270 s = socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP);
275 error = getvfsbyname("nfs", &vfc);
276 if (error && vfsisloadable("nfs")) {
278 err(1, "vfsload(nfs)");
279 endvfsent(); /* flush cache */
280 error = getvfsbyname("nfs", &vfc);
283 errx(1, "NFS support is not available in the running kernel");
285 while ((c = getopt(argc, argv, "2dlnr")) != -1)
297 debug = debug ? 0 : 1;
311 strncpy(exname, *argv, MAXPATHLEN-1);
312 exname[MAXPATHLEN-1] = '\0';
314 strcpy(exname, _PATH_EXPORTS);
315 openlog("mountd", LOG_PID, LOG_DAEMON);
317 warnx("getting export list");
320 warnx("getting mount list");
326 signal(SIGINT, SIG_IGN);
327 signal(SIGQUIT, SIG_IGN);
329 signal(SIGHUP, huphandler);
330 signal(SIGTERM, terminate);
334 rpcb_unset(RPCPROG_MNT, RPCMNT_VER1, NULL);
335 rpcb_unset(RPCPROG_MNT, RPCMNT_VER3, NULL);
336 udpsock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
337 tcpsock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
338 udpconf = getnetconfigent("udp");
339 tcpconf = getnetconfigent("tcp");
342 udp6sock = socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP);
343 tcp6sock = socket(AF_INET6, SOCK_STREAM, IPPROTO_TCP);
345 * We're doing host-based access checks here, so don't allow
346 * v4-in-v6 to confuse things. The kernel will disable it
347 * by default on NFS sockets too.
349 if (udp6sock != -1 && setsockopt(udp6sock, IPPROTO_IPV6,
350 IPV6_BINDV6ONLY, &one, sizeof one) < 0){
351 syslog(LOG_ERR, "can't disable v4-in-v6 on UDP socket");
354 if (tcp6sock != -1 && setsockopt(tcp6sock, IPPROTO_IPV6,
355 IPV6_BINDV6ONLY, &one, sizeof one) < 0){
356 syslog(LOG_ERR, "can't disable v4-in-v6 on UDP socket");
359 udp6conf = getnetconfigent("udp6");
360 tcp6conf = getnetconfigent("tcp6");
363 if (!resvport_only) {
365 mib[1] = vfc.vfc_typenum;
366 mib[2] = NFS_NFSPRIVPORT;
367 if (sysctl(mib, 3, NULL, NULL, &resvport_only,
368 sizeof(resvport_only)) != 0 && errno != ENOENT) {
369 syslog(LOG_ERR, "sysctl: %m");
373 if ((udptransp = svcudp_create(RPC_ANYSOCK)) == NULL ||
374 (tcptransp = svctcp_create(RPC_ANYSOCK, 0, 0)) == NULL) {
375 syslog(LOG_ERR, "can't create socket");
378 if (udpsock != -1 && udpconf != NULL) {
379 bindresvport(udpsock, NULL);
380 udptransp = svc_dg_create(udpsock, 0, 0);
381 if (udptransp != NULL) {
382 if (!svc_reg(udptransp, RPCPROG_MNT, RPCMNT_VER1,
384 syslog(LOG_WARNING, "can't register UDP RPCMNT_VER1 service");
388 if (!svc_reg(udptransp, RPCPROG_MNT, RPCMNT_VER3,
390 syslog(LOG_WARNING, "can't register UDP RPCMNT_VER3 service");
395 syslog(LOG_WARNING, "can't create UDP services");
398 if (tcpsock != -1 && tcpconf != NULL) {
399 bindresvport(tcpsock, NULL);
400 listen(tcpsock, SOMAXCONN);
401 tcptransp = svc_vc_create(tcpsock, 0, 0);
402 if (tcptransp != NULL) {
403 if (!svc_reg(tcptransp, RPCPROG_MNT, RPCMNT_VER1,
405 syslog(LOG_WARNING, "can't register TCP RPCMNT_VER1 service");
409 if (!svc_reg(tcptransp, RPCPROG_MNT, RPCMNT_VER3,
411 syslog(LOG_WARNING, "can't register TCP RPCMNT_VER3 service");
416 syslog(LOG_WARNING, "can't create TCP service");
419 if (have_v6 && udp6sock != -1 && udp6conf != NULL) {
420 bindresvport(udp6sock, NULL);
421 udp6transp = svc_dg_create(udp6sock, 0, 0);
422 if (udp6transp != NULL) {
423 if (!svc_reg(udp6transp, RPCPROG_MNT, RPCMNT_VER1,
425 syslog(LOG_WARNING, "can't register UDP6 RPCMNT_VER1 service");
429 if (!svc_reg(udp6transp, RPCPROG_MNT, RPCMNT_VER3,
431 syslog(LOG_WARNING, "can't register UDP6 RPCMNT_VER3 service");
436 syslog(LOG_WARNING, "can't create UDP6 service");
439 if (have_v6 && tcp6sock != -1 && tcp6conf != NULL) {
440 bindresvport(tcp6sock, NULL);
441 listen(tcp6sock, SOMAXCONN);
442 tcp6transp = svc_vc_create(tcp6sock, 0, 0);
443 if (tcp6transp != NULL) {
444 if (!svc_reg(tcp6transp, RPCPROG_MNT, RPCMNT_VER1,
446 syslog(LOG_WARNING, "can't register TCP6 RPCMNT_VER1 service");
450 if (!svc_reg(tcp6transp, RPCPROG_MNT, RPCMNT_VER3,
452 syslog(LOG_WARNING, "can't register TCP6 RPCMNT_VER3 service");
457 syslog(LOG_WARNING, "can't create TCP6 service");
461 syslog(LOG_ERR, "could not create any services");
465 /* Expand svc_run() here so that we can call get_exportlist(). */
472 switch (select(svc_maxfd + 1, &readfds, NULL, NULL, NULL)) {
476 syslog(LOG_ERR, "mountd died: select: %m");
481 svc_getreqset(&readfds);
490 "usage: mountd [-2] [-d] [-l] [-n] [-r] [export_file]\n");
495 * The mount rpc service
498 mntsrv(struct svc_req *rqstp, SVCXPRT *transp)
500 struct exportlist *ep;
505 char host[NI_MAXHOST], numerichost[NI_MAXHOST];
506 int lookup_failed = 1;
507 struct sockaddr *saddr;
509 char rpcpath[RPCMNT_PATHLEN + 1], dirpath[MAXPATHLEN];
510 int bad = 0, defset, hostset;
511 sigset_t sighup_mask;
513 sigemptyset(&sighup_mask);
514 sigaddset(&sighup_mask, SIGHUP);
515 saddr = svc_getrpccaller(transp)->buf;
516 switch (saddr->sa_family) {
518 sport = ntohs(((struct sockaddr_in6 *)saddr)->sin6_port);
521 sport = ntohs(((struct sockaddr_in *)saddr)->sin_port);
524 syslog(LOG_ERR, "request from unknown address family");
527 lookup_failed = getnameinfo(saddr, saddr->sa_len, host, sizeof host,
529 getnameinfo(saddr, saddr->sa_len, numerichost,
530 sizeof numerichost, NULL, 0, NI_NUMERICHOST);
531 switch (rqstp->rq_proc) {
533 if (!svc_sendreply(transp, (xdrproc_t)xdr_void, NULL))
534 syslog(LOG_ERR, "can't send reply");
537 if (sport >= IPPORT_RESERVED && resvport_only) {
539 "mount request from %s from unprivileged port",
541 svcerr_weakauth(transp);
544 if (!svc_getargs(transp, (xdrproc_t)xdr_dir, rpcpath)) {
545 syslog(LOG_NOTICE, "undecodable mount request from %s",
547 svcerr_decode(transp);
552 * Get the real pathname and make sure it is a directory
553 * or a regular file if the -r option was specified
556 if (realpath(rpcpath, dirpath) == NULL ||
557 stat(dirpath, &stb) < 0 ||
558 (!S_ISDIR(stb.st_mode) &&
559 (dir_only || !S_ISREG(stb.st_mode))) ||
560 statfs(dirpath, &fsb) < 0) {
561 chdir("/"); /* Just in case realpath doesn't */
563 "mount request from %s for non existent path %s",
564 numerichost, dirpath);
566 warnx("stat failed on %s", dirpath);
567 bad = ENOENT; /* We will send error reply later */
570 /* Check in the exports list */
571 sigprocmask(SIG_BLOCK, &sighup_mask, NULL);
572 ep = ex_search(&fsb.f_fsid);
573 hostset = defset = 0;
574 if (ep && (chk_host(ep->ex_defdir, saddr, &defset, &hostset) ||
575 ((dp = dirp_search(ep->ex_dirl, dirpath)) &&
576 chk_host(dp, saddr, &defset, &hostset)) ||
577 (defset && scan_tree(ep->ex_defdir, saddr) == 0 &&
578 scan_tree(ep->ex_dirl, saddr) == 0))) {
580 if (!svc_sendreply(transp, (xdrproc_t)xdr_long,
582 syslog(LOG_ERR, "can't send reply");
583 sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
586 if (hostset & DP_HOSTSET)
587 fhr.fhr_flag = hostset;
589 fhr.fhr_flag = defset;
590 fhr.fhr_vers = rqstp->rq_vers;
591 /* Get the file handle */
592 memset(&fhr.fhr_fh, 0, sizeof(nfsfh_t));
593 if (getfh(dirpath, (fhandle_t *)&fhr.fhr_fh) < 0) {
595 syslog(LOG_ERR, "can't get fh for %s", dirpath);
596 if (!svc_sendreply(transp, (xdrproc_t)xdr_long,
598 syslog(LOG_ERR, "can't send reply");
599 sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
602 if (!svc_sendreply(transp, (xdrproc_t)xdr_fhs, &fhr))
603 syslog(LOG_ERR, "can't send reply");
605 add_mlist(host, dirpath);
607 add_mlist(numerichost, dirpath);
609 warnx("mount successful");
612 "mount request succeeded from %s for %s",
613 numerichost, dirpath);
617 "mount request denied from %s for %s",
618 numerichost, dirpath);
621 if (bad && !svc_sendreply(transp, (xdrproc_t)xdr_long, &bad))
622 syslog(LOG_ERR, "can't send reply");
623 sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
626 if (!svc_sendreply(transp, (xdrproc_t)xdr_mlist, NULL))
627 syslog(LOG_ERR, "can't send reply");
630 "dump request succeeded from %s",
634 if (sport >= IPPORT_RESERVED && resvport_only) {
636 "umount request from %s from unprivileged port",
638 svcerr_weakauth(transp);
641 if (!svc_getargs(transp, (xdrproc_t)xdr_dir, rpcpath)) {
642 syslog(LOG_NOTICE, "undecodable umount request from %s",
644 svcerr_decode(transp);
647 if (realpath(rpcpath, dirpath) == NULL) {
648 syslog(LOG_NOTICE, "umount request from %s "
649 "for non existent path %s",
650 numerichost, dirpath);
652 if (!svc_sendreply(transp, (xdrproc_t)xdr_void, NULL))
653 syslog(LOG_ERR, "can't send reply");
655 del_mlist(host, dirpath);
656 del_mlist(numerichost, dirpath);
659 "umount request succeeded from %s for %s",
660 numerichost, dirpath);
663 if (sport >= IPPORT_RESERVED && resvport_only) {
665 "umountall request from %s from unprivileged port",
667 svcerr_weakauth(transp);
670 if (!svc_sendreply(transp, (xdrproc_t)xdr_void, NULL))
671 syslog(LOG_ERR, "can't send reply");
673 del_mlist(host, NULL);
674 del_mlist(numerichost, NULL);
677 "umountall request succeeded from %s",
681 if (!svc_sendreply(transp, (xdrproc_t)xdr_explist, NULL))
682 syslog(LOG_ERR, "can't send reply");
685 "export request succeeded from %s",
689 svcerr_noproc(transp);
695 * Xdr conversion for a dirpath string
698 xdr_dir(XDR *xdrsp, char *dirp)
700 return (xdr_string(xdrsp, &dirp, RPCMNT_PATHLEN));
704 * Xdr routine to generate file handle reply
707 xdr_fhs(XDR *xdrsp, caddr_t cp)
709 struct fhreturn *fhrp = (struct fhreturn *)cp;
710 u_long ok = 0, len, auth;
712 if (!xdr_long(xdrsp, &ok))
714 switch (fhrp->fhr_vers) {
716 return (xdr_opaque(xdrsp, (caddr_t)&fhrp->fhr_fh, NFSX_V2FH));
719 if (!xdr_long(xdrsp, &len))
721 if (!xdr_opaque(xdrsp, (caddr_t)&fhrp->fhr_fh, len))
723 if (fhrp->fhr_flag & DP_KERB)
724 auth = RPCAUTH_KERB4;
728 if (!xdr_long(xdrsp, &len))
730 return (xdr_long(xdrsp, &auth));
736 xdr_mlist(XDR *xdrsp, caddr_t cp)
738 struct mountlist *mlp;
745 if (!xdr_bool(xdrsp, &true))
747 strp = &mlp->ml_host[0];
748 if (!xdr_string(xdrsp, &strp, RPCMNT_NAMELEN))
750 strp = &mlp->ml_dirp[0];
751 if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN))
755 if (!xdr_bool(xdrsp, &false))
761 * Xdr conversion for export list
764 xdr_explist(XDR *xdrsp, caddr_t cp)
766 struct exportlist *ep;
769 sigset_t sighup_mask;
771 sigemptyset(&sighup_mask);
772 sigaddset(&sighup_mask, SIGHUP);
773 sigprocmask(SIG_BLOCK, &sighup_mask, NULL);
777 if (put_exlist(ep->ex_dirl, xdrsp, ep->ex_defdir, &putdef))
779 if (ep->ex_defdir && putdef == 0 &&
780 put_exlist(ep->ex_defdir, xdrsp, NULL,
785 sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
786 if (!xdr_bool(xdrsp, &false))
790 sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
795 * Called from xdr_explist() to traverse the tree and export the
799 put_exlist(struct dirlist *dp, XDR *xdrsp, struct dirlist *adp, int *putdefp)
801 struct grouplist *grp;
809 if (put_exlist(dp->dp_left, xdrsp, adp, putdefp))
811 if (!xdr_bool(xdrsp, &true))
814 if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN))
816 if (adp && !strcmp(dp->dp_dirp, adp->dp_dirp)) {
820 if ((dp->dp_flag & DP_DEFSET) == 0 &&
821 (gotalldir == 0 || (adp->dp_flag & DP_DEFSET) == 0)) {
825 if (grp->gr_type == GT_HOST) {
826 if (!xdr_bool(xdrsp, &true))
828 strp = grp->gr_ptr.gt_addrinfo->ai_canonname;
829 if (!xdr_string(xdrsp, &strp,
832 } else if (grp->gr_type == GT_NET) {
833 if (!xdr_bool(xdrsp, &true))
835 strp = grp->gr_ptr.gt_net.nt_name;
836 if (!xdr_string(xdrsp, &strp,
841 if (gotalldir && hp == NULL) {
847 if (!xdr_bool(xdrsp, &false))
849 if (put_exlist(dp->dp_right, xdrsp, adp, putdefp))
855 #define LINESIZ 10240
860 * Get the export list
865 struct exportlist *ep, *ep2;
866 struct grouplist *grp, *tgrp;
867 struct exportlist **epp;
868 struct dirlist *dirhead;
869 struct statfs fsb, *fsp;
871 char *cp, *endcp, *dirp, *hst, *usr, *dom, savedc;
872 int len, has_host, exflags, got_nondir, dirplen, num, i, netgrp;
878 * First, get rid of the old list
897 * And delete exports that are in the kernel for all local
899 * XXX: Should know how to handle all local exportable file systems
900 * instead of just "ufs".
902 num = getmntinfo(&fsp, MNT_NOWAIT);
903 for (i = 0; i < num; i++) {
908 struct msdosfs_args da;
911 struct export_args export;
913 export.ex_flags = MNT_DELEXPORT;
914 if (mountctl(fsp->f_mntonname, MOUNTCTL_SET_EXPORT, -1,
915 &export, sizeof(export), NULL, 0) == 0) {
916 } else if (!strcmp(fsp->f_fstypename, "mfs") ||
917 !strcmp(fsp->f_fstypename, "ufs") ||
918 !strcmp(fsp->f_fstypename, "msdos") ||
919 !strcmp(fsp->f_fstypename, "ntfs") ||
920 !strcmp(fsp->f_fstypename, "cd9660")) {
921 targs.ua.fspec = NULL;
922 targs.ua.export.ex_flags = MNT_DELEXPORT;
923 if (mount(fsp->f_fstypename, fsp->f_mntonname,
924 fsp->f_flags | MNT_UPDATE,
925 (caddr_t)&targs) < 0)
926 syslog(LOG_ERR, "can't delete exports for %s",
933 * Read in the exports file and build the list, calling
934 * mount() as we go along to push the export rules into the kernel.
936 if ((exp_file = fopen(exname, "r")) == NULL) {
937 syslog(LOG_ERR, "can't open %s", exname);
943 warnx("got line %s", line);
945 nextfield(&cp, &endcp);
954 exflags = MNT_EXPORTED;
960 * Create new exports list entry
963 tgrp = grp = get_grp();
965 if (len > RPCMNT_NAMELEN) {
966 getexp_err(ep, tgrp);
971 getexp_err(ep, tgrp);
975 warnx("doing opt %s", cp);
977 if (do_opt(&cp, &endcp, ep, grp, &has_host,
979 getexp_err(ep, tgrp);
982 } else if (*cp == '/') {
985 if (check_dirpath(cp) &&
986 statfs(cp, &fsb) >= 0) {
988 syslog(LOG_ERR, "dirs must be first");
989 getexp_err(ep, tgrp);
993 if (ep->ex_fs.val[0] != fsb.f_fsid.val[0] ||
994 ep->ex_fs.val[1] != fsb.f_fsid.val[1]) {
995 getexp_err(ep, tgrp);
1000 * See if this directory is already
1003 ep = ex_search(&fsb.f_fsid);
1006 ep->ex_fs = fsb.f_fsid;
1007 ep->ex_fsdir = (char *)
1008 malloc(strlen(fsb.f_mntonname) + 1);
1010 strcpy(ep->ex_fsdir,
1015 warnx("making new ep fs=0x%x,0x%x",
1019 warnx("found ep fs=0x%x,0x%x",
1025 * Add dirpath to export mount point.
1027 dirp = add_expdir(&dirhead, cp, len);
1030 getexp_err(ep, tgrp);
1039 getexp_err(ep, tgrp);
1044 * Get the host or netgroup.
1047 netgrp = getnetgrent(&hst, &usr, &dom);
1050 grp->gr_next = get_grp();
1056 "null hostname in netgroup %s, skipping", cp);
1057 grp->gr_type = GT_IGNORE;
1058 } else if (get_host(hst, grp, tgrp)) {
1060 "bad host %s in netgroup %s, skipping", hst, cp);
1061 grp->gr_type = GT_IGNORE;
1063 } else if (get_host(cp, grp, tgrp)) {
1064 syslog(LOG_ERR, "bad host %s, skipping", cp);
1065 grp->gr_type = GT_IGNORE;
1068 } while (netgrp && getnetgrent(&hst, &usr, &dom));
1073 nextfield(&cp, &endcp);
1076 if (check_options(dirhead)) {
1077 getexp_err(ep, tgrp);
1081 grp->gr_type = GT_DEFAULT;
1083 warnx("adding a default entry");
1086 * Don't allow a network export coincide with a list of
1087 * host(s) on the same line.
1089 } else if ((opt_flags & OP_NET) && tgrp->gr_next) {
1090 getexp_err(ep, tgrp);
1094 * If an export list was specified on this line, make sure
1095 * that we have at least one valid entry, otherwise skip it.
1099 while (grp && grp->gr_type == GT_IGNORE)
1102 getexp_err(ep, tgrp);
1108 * Loop through hosts, pushing the exports into the kernel.
1109 * After loop, tgrp points to the start of the list and
1110 * grp points to the last entry in the list.
1114 if (do_mount(ep, grp, exflags, &anon, dirp, dirplen,
1116 getexp_err(ep, tgrp);
1119 } while (grp->gr_next && (grp = grp->gr_next));
1122 * Success. Update the data structures.
1125 hang_dirp(dirhead, tgrp, ep, opt_flags);
1126 grp->gr_next = grphead;
1129 hang_dirp(dirhead, NULL, ep,
1134 if ((ep->ex_flag & EX_LINKED) == 0) {
1139 * Insert in the list in alphabetical order.
1141 while (ep2 && strcmp(ep2->ex_fsdir, ep->ex_fsdir) < 0) {
1142 epp = &ep2->ex_next;
1148 ep->ex_flag |= EX_LINKED;
1160 * Allocate an export list element
1165 struct exportlist *ep;
1167 ep = (struct exportlist *)malloc(sizeof (struct exportlist));
1170 memset(ep, 0, sizeof(struct exportlist));
1175 * Allocate a group list element
1180 struct grouplist *gp;
1182 gp = (struct grouplist *)malloc(sizeof (struct grouplist));
1185 memset(gp, 0, sizeof(struct grouplist));
1190 * Clean up upon an error in get_exportlist().
1193 getexp_err(struct exportlist *ep, struct grouplist *grp)
1195 struct grouplist *tgrp;
1197 if (!(opt_flags & OP_QUIET))
1198 syslog(LOG_ERR, "bad exports list line %s", line);
1199 if (ep && (ep->ex_flag & EX_LINKED) == 0)
1209 * Search the export list for a matching fs.
1212 ex_search(fsid_t *fsid)
1214 struct exportlist *ep;
1218 if (ep->ex_fs.val[0] == fsid->val[0] &&
1219 ep->ex_fs.val[1] == fsid->val[1])
1227 * Add a directory path to the list.
1230 add_expdir(struct dirlist **dpp, char *cp, int len)
1234 dp = (struct dirlist *)malloc(sizeof (struct dirlist) + len);
1238 dp->dp_right = NULL;
1240 dp->dp_hosts = NULL;
1241 strcpy(dp->dp_dirp, cp);
1243 return (dp->dp_dirp);
1247 * Hang the dir list element off the dirpath binary tree as required
1248 * and update the entry for host.
1251 hang_dirp(struct dirlist *dp, struct grouplist *grp, struct exportlist *ep,
1254 struct hostlist *hp;
1255 struct dirlist *dp2;
1257 if (flags & OP_ALLDIRS) {
1263 ep->ex_defdir->dp_flag |= DP_DEFSET;
1264 if (flags & OP_KERB)
1265 ep->ex_defdir->dp_flag |= DP_KERB;
1266 } else while (grp) {
1268 if (flags & OP_KERB)
1269 hp->ht_flag |= DP_KERB;
1271 hp->ht_next = ep->ex_defdir->dp_hosts;
1272 ep->ex_defdir->dp_hosts = hp;
1278 * Loop through the directories adding them to the tree.
1282 add_dlist(&ep->ex_dirl, dp, grp, flags);
1289 * Traverse the binary tree either updating a node that is already there
1290 * for the new directory or adding the new node.
1293 add_dlist(struct dirlist **dpp, struct dirlist *newdp, struct grouplist *grp,
1297 struct hostlist *hp;
1302 cmp = strcmp(dp->dp_dirp, newdp->dp_dirp);
1304 add_dlist(&dp->dp_left, newdp, grp, flags);
1306 } else if (cmp < 0) {
1307 add_dlist(&dp->dp_right, newdp, grp, flags);
1310 free((caddr_t)newdp);
1319 * Hang all of the host(s) off of the directory point.
1323 if (flags & OP_KERB)
1324 hp->ht_flag |= DP_KERB;
1326 hp->ht_next = dp->dp_hosts;
1331 dp->dp_flag |= DP_DEFSET;
1332 if (flags & OP_KERB)
1333 dp->dp_flag |= DP_KERB;
1338 * Search for a dirpath on the export point.
1341 dirp_search(struct dirlist *dp, char *dirp)
1346 cmp = strcmp(dp->dp_dirp, dirp);
1348 return (dirp_search(dp->dp_left, dirp));
1350 return (dirp_search(dp->dp_right, dirp));
1358 * Some helper functions for netmasks. They all assume masks in network
1359 * order (big endian).
1362 bitcmp(void *dst, void *src, int bitlen)
1365 u_int8_t *p1 = dst, *p2 = src;
1367 int bytelen, bitsleft;
1369 bytelen = bitlen / 8;
1370 bitsleft = bitlen % 8;
1373 printf("comparing:\n");
1374 for (i = 0; i < (bitsleft ? bytelen + 1 : bytelen); i++)
1375 printf("%02x", p1[i]);
1377 for (i = 0; i < (bitsleft ? bytelen + 1 : bytelen); i++)
1378 printf("%02x", p2[i]);
1382 for (i = 0; i < bytelen; i++) {
1389 for (i = 0; i < bitsleft; i++) {
1390 bitmask = 1 << (7 - i);
1391 if ((*p1 & bitmask) != (*p2 & bitmask))
1399 * Scan for a host match in a directory tree.
1402 chk_host(struct dirlist *dp, struct sockaddr *saddr, int *defsetp,
1405 struct hostlist *hp;
1406 struct grouplist *grp;
1407 struct addrinfo *ai;
1410 if (dp->dp_flag & DP_DEFSET)
1411 *defsetp = dp->dp_flag;
1415 switch (grp->gr_type) {
1417 ai = grp->gr_ptr.gt_addrinfo;
1418 for (; ai; ai = ai->ai_next) {
1419 if (!sacmp(ai->ai_addr, saddr)) {
1421 (hp->ht_flag | DP_HOSTSET);
1427 if (!netpartcmp(saddr,
1428 (struct sockaddr *) &grp->gr_ptr.gt_net.nt_net,
1429 grp->gr_ptr.gt_net.nt_mask)) {
1430 *hostsetp = (hp->ht_flag | DP_HOSTSET);
1442 * Scan tree for a host that matches the address.
1445 scan_tree(struct dirlist *dp, struct sockaddr *saddr)
1447 int defset, hostset;
1450 if (scan_tree(dp->dp_left, saddr))
1452 if (chk_host(dp, saddr, &defset, &hostset))
1454 if (scan_tree(dp->dp_right, saddr))
1461 * Traverse the dirlist tree and free it up.
1464 free_dir(struct dirlist *dp)
1468 free_dir(dp->dp_left);
1469 free_dir(dp->dp_right);
1470 free_host(dp->dp_hosts);
1476 * Parse the option string and update fields.
1477 * Option arguments may either be -<option>=<value> or
1481 do_opt(char **cpp, char **endcpp, struct exportlist *ep, struct grouplist *grp,
1482 int *has_hostp, int *exflagsp, struct ucred *cr)
1484 char *cpoptarg, *cpoptend;
1485 char *cp, *endcp, *cpopt, savedc, savedc2;
1486 int allflag, usedarg;
1494 while (cpopt && *cpopt) {
1497 if ((cpoptend = strchr(cpopt, ','))) {
1499 if ((cpoptarg = strchr(cpopt, '=')))
1502 if ((cpoptarg = strchr(cpopt, '=')))
1506 nextfield(&cp, &endcp);
1508 if (endcp > cp && *cp != '-') {
1516 if (!strcmp(cpopt, "ro") || !strcmp(cpopt, "o")) {
1517 *exflagsp |= MNT_EXRDONLY;
1518 } else if (cpoptarg && (!strcmp(cpopt, "maproot") ||
1519 !(allflag = strcmp(cpopt, "mapall")) ||
1520 !strcmp(cpopt, "root") || !strcmp(cpopt, "r"))) {
1522 parsecred(cpoptarg, cr);
1524 *exflagsp |= MNT_EXPORTANON;
1525 opt_flags |= OP_MAPALL;
1527 opt_flags |= OP_MAPROOT;
1528 } else if (!strcmp(cpopt, "kerb") || !strcmp(cpopt, "k")) {
1529 *exflagsp |= MNT_EXKERB;
1530 opt_flags |= OP_KERB;
1531 } else if (cpoptarg && (!strcmp(cpopt, "mask") ||
1532 !strcmp(cpopt, "m"))) {
1533 if (get_net(cpoptarg, &grp->gr_ptr.gt_net, 1)) {
1534 syslog(LOG_ERR, "bad mask: %s", cpoptarg);
1538 opt_flags |= OP_MASK;
1539 } else if (cpoptarg && (!strcmp(cpopt, "network") ||
1540 !strcmp(cpopt, "n"))) {
1541 if (strchr(cpoptarg, '/') != NULL) {
1543 fprintf(stderr, "setting OP_MASKLEN\n");
1544 opt_flags |= OP_MASKLEN;
1546 if (grp->gr_type != GT_NULL) {
1547 syslog(LOG_ERR, "network/host conflict");
1549 } else if (get_net(cpoptarg, &grp->gr_ptr.gt_net, 0)) {
1550 syslog(LOG_ERR, "bad net: %s", cpoptarg);
1553 grp->gr_type = GT_NET;
1556 opt_flags |= OP_NET;
1557 } else if (!strcmp(cpopt, "alldirs")) {
1558 opt_flags |= OP_ALLDIRS;
1559 } else if (!strcmp(cpopt, "public")) {
1560 *exflagsp |= MNT_EXPUBLIC;
1561 } else if (!strcmp(cpopt, "webnfs")) {
1562 *exflagsp |= (MNT_EXPUBLIC|MNT_EXRDONLY|MNT_EXPORTANON);
1563 opt_flags |= OP_MAPALL;
1564 } else if (cpoptarg && !strcmp(cpopt, "index")) {
1565 ep->ex_indexfile = strdup(cpoptarg);
1566 } else if (!strcmp(cpopt, "quiet")) {
1567 opt_flags |= OP_QUIET;
1569 syslog(LOG_ERR, "bad opt %s", cpopt);
1588 * Translate a character string to the corresponding list of network
1589 * addresses for a hostname.
1592 get_host(char *cp, struct grouplist *grp, struct grouplist *tgrp)
1594 struct grouplist *checkgrp;
1595 struct addrinfo *ai, *tai, hints;
1597 char host[NI_MAXHOST];
1599 if (grp->gr_type != GT_NULL) {
1600 syslog(LOG_ERR, "Bad netgroup type for ip host %s", cp);
1603 memset(&hints, 0, sizeof hints);
1604 hints.ai_flags = AI_CANONNAME;
1605 hints.ai_protocol = IPPROTO_UDP;
1606 ecode = getaddrinfo(cp, NULL, &hints, &ai);
1608 syslog(LOG_ERR,"can't get address info for host %s", cp);
1611 grp->gr_ptr.gt_addrinfo = ai;
1612 while (ai != NULL) {
1613 if (ai->ai_canonname == NULL) {
1614 if (getnameinfo(ai->ai_addr, ai->ai_addrlen, host,
1615 sizeof host, NULL, 0, ninumeric) != 0)
1616 strlcpy(host, "?", sizeof(host));
1617 ai->ai_canonname = strdup(host);
1618 ai->ai_flags |= AI_CANONNAME;
1621 fprintf(stderr, "got host %s\n", ai->ai_canonname);
1623 * Sanity check: make sure we don't already have an entry
1624 * for this host in the grouplist.
1626 for (checkgrp = tgrp; checkgrp != NULL;
1627 checkgrp = checkgrp->gr_next) {
1628 if (checkgrp->gr_type != GT_HOST)
1630 for (tai = checkgrp->gr_ptr.gt_addrinfo; tai != NULL;
1631 tai = tai->ai_next) {
1632 if (sacmp(tai->ai_addr, ai->ai_addr) != 0)
1636 "ignoring duplicate host %s\n",
1638 grp->gr_type = GT_IGNORE;
1644 grp->gr_type = GT_HOST;
1649 * Free up an exports list component
1652 free_exp(struct exportlist *ep)
1655 if (ep->ex_defdir) {
1656 free_host(ep->ex_defdir->dp_hosts);
1657 free((caddr_t)ep->ex_defdir);
1661 if (ep->ex_indexfile)
1662 free(ep->ex_indexfile);
1663 free_dir(ep->ex_dirl);
1671 free_host(struct hostlist *hp)
1673 struct hostlist *hp2;
1685 struct hostlist *hp;
1687 hp = (struct hostlist *)malloc(sizeof (struct hostlist));
1696 * Out of memory, fatal
1702 syslog(LOG_ERR, "out of memory");
1707 * Do the mount syscall with the update flag to push the export info into
1711 do_mount(struct exportlist *ep, struct grouplist *grp, int exflags,
1712 struct ucred *anoncrp, char *dirp, int dirplen, struct statfs *fsb)
1715 struct sockaddr_storage ss;
1716 struct addrinfo *ai;
1725 struct msdosfs_args da;
1726 struct adosfs_args aa;
1728 struct ntfs_args na;
1732 args.ua.export.ex_flags = exflags;
1733 args.ua.export.ex_anon = *anoncrp;
1734 args.ua.export.ex_indexfile = ep->ex_indexfile;
1735 if (grp->gr_type == GT_HOST)
1736 ai = grp->gr_ptr.gt_addrinfo;
1741 switch (grp->gr_type) {
1743 if (ai->ai_addr->sa_family == AF_INET6 && have_v6 == 0)
1745 args.ua.export.ex_addr = ai->ai_addr;
1746 args.ua.export.ex_addrlen = ai->ai_addrlen;
1747 args.ua.export.ex_masklen = 0;
1750 args.ua.export.ex_addr = (struct sockaddr *)
1751 &grp->gr_ptr.gt_net.nt_net;
1752 if (args.ua.export.ex_addr->sa_family == AF_INET6 &&
1755 args.ua.export.ex_addrlen =
1756 args.ua.export.ex_addr->sa_len;
1757 memset(&ss, 0, sizeof ss);
1758 ss.ss_family = args.ua.export.ex_addr->sa_family;
1759 ss.ss_len = args.ua.export.ex_addr->sa_len;
1760 if (allones(&ss, grp->gr_ptr.gt_net.nt_mask) != 0) {
1761 syslog(LOG_ERR, "Bad network flag");
1766 args.ua.export.ex_mask = (struct sockaddr *)&ss;
1767 args.ua.export.ex_masklen = ss.ss_len;
1770 args.ua.export.ex_addr = NULL;
1771 args.ua.export.ex_addrlen = 0;
1772 args.ua.export.ex_mask = NULL;
1773 args.ua.export.ex_masklen = 0;
1779 syslog(LOG_ERR, "bad grouptype");
1787 * Maybe I should just use the fsb->f_mntonname path instead
1788 * of looping back up the dirp to the mount point??
1789 * Also, needs to know how to export all types of local
1790 * exportable file systems and not just "ufs".
1795 r = mountctl(fsb->f_mntonname, MOUNTCTL_SET_EXPORT,
1797 &args.ua.export, sizeof(args.ua.export),
1799 if (r < 0 && errno == EOPNOTSUPP) {
1800 r = mount(fsb->f_fstypename, dirp,
1801 fsb->f_flags | MNT_UPDATE,
1809 cp = dirp + dirplen - 1;
1810 if (opt_flags & OP_QUIET)
1812 if (errno == EPERM) {
1814 warnx("can't change attributes for %s",
1817 "can't change attributes for %s", dirp);
1820 if (opt_flags & OP_ALLDIRS) {
1821 if (errno == EINVAL)
1823 "-alldirs requested but %s is not a filesystem mountpoint",
1827 "could not remount %s: %m",
1831 /* back up over the last component */
1832 while (*cp == '/' && cp > dirp)
1834 while (*(cp - 1) != '/' && cp > dirp)
1838 warnx("mnt unsucc");
1839 syslog(LOG_ERR, "can't export %s", dirp);
1844 /* Check that we're still on the same filesystem. */
1845 if (statfs(dirp, &fsb1) != 0 || bcmp(&fsb1.f_fsid,
1846 &fsb->f_fsid, sizeof(fsb1.f_fsid)) != 0) {
1848 syslog(LOG_ERR, "can't export %s", dirp);
1864 * Translate a net address.
1867 get_net(char *cp, struct netmsk *net, int maskflg)
1870 char *name, *p, *prefp;
1871 struct sockaddr_in sin, *sinp;
1872 struct sockaddr *sa;
1873 struct addrinfo hints, *ai = NULL;
1874 char netname[NI_MAXHOST];
1879 if ((opt_flags & OP_MASKLEN) && !maskflg) {
1880 p = strchr(cp, '/');
1885 if ((np = getnetbyname(cp)) != NULL) {
1886 sin.sin_family = AF_INET;
1887 sin.sin_len = sizeof sin;
1888 sin.sin_addr = inet_makeaddr(np->n_net, 0);
1889 sa = (struct sockaddr *)&sin;
1890 } else if (isdigit(*cp)) {
1891 memset(&hints, 0, sizeof hints);
1892 hints.ai_family = AF_UNSPEC;
1893 hints.ai_flags = AI_NUMERICHOST;
1894 if (getaddrinfo(cp, NULL, &hints, &ai) != 0) {
1896 * If getaddrinfo() failed, try the inet4 network
1897 * notation with less than 3 dots.
1899 sin.sin_family = AF_INET;
1900 sin.sin_len = sizeof sin;
1901 sin.sin_addr = inet_makeaddr(inet_network(cp),0);
1903 fprintf(stderr, "get_net: v4 addr %x\n",
1904 sin.sin_addr.s_addr);
1905 sa = (struct sockaddr *)&sin;
1908 } else if (isxdigit(*cp) || *cp == ':') {
1909 memset(&hints, 0, sizeof hints);
1910 hints.ai_family = AF_UNSPEC;
1911 hints.ai_flags = AI_NUMERICHOST;
1912 if (getaddrinfo(cp, NULL, &hints, &ai) == 0)
1919 ecode = getnameinfo(sa, sa->sa_len, netname, sizeof netname,
1920 NULL, 0, ninumeric);
1925 net->nt_mask = countones(sa);
1927 if (opt_flags & OP_MASKLEN) {
1928 preflen = strtol(prefp, NULL, 10);
1929 if (preflen == LONG_MIN && errno == ERANGE)
1931 net->nt_mask = (int)preflen;
1938 if (getnameinfo(sa, sa->sa_len, netname, sizeof netname,
1939 NULL, 0, ninumeric) != 0)
1940 strlcpy(netname, "?", sizeof(netname));
1943 net->nt_name = strdup(name);
1944 memcpy(&net->nt_net, sa, sa->sa_len);
1947 if (!maskflg && sa->sa_family == AF_INET &&
1948 !(opt_flags & (OP_MASK|OP_MASKLEN))) {
1949 sinp = (struct sockaddr_in *)sa;
1950 if (IN_CLASSA(sinp->sin_addr.s_addr))
1952 else if (IN_CLASSB(sinp->sin_addr.s_addr))
1954 else if (IN_CLASSC(sinp->sin_addr.s_addr))
1956 else if (IN_CLASSD(sinp->sin_addr.s_addr))
1959 net->nt_mask = 32; /* XXX */
1973 * Parse out the next white space separated field
1976 nextfield(char **cp, char **endcp)
1981 while (*p == ' ' || *p == '\t')
1983 if (*p == '\n' || *p == '\0')
1987 while (*p != ' ' && *p != '\t' && *p != '\n' && *p != '\0')
1994 * Get an exports file line. Skip over blank lines and handle line
2002 int totlen, cont_line;
2005 * Loop around ignoring blank lines and getting all continuation lines.
2010 if (fgets(p, LINESIZ - totlen, exp_file) == NULL)
2016 (*cp == ' ' || *cp == '\t' || *cp == '\n' || *cp == '\\')) {
2029 if (totlen >= LINESIZ) {
2030 syslog(LOG_ERR, "exports line too long");
2035 } while (totlen == 0 || cont_line);
2040 * Parse a description of a credential.
2043 parsecred(char *namelist, struct ucred *cr)
2050 int ngroups, groups[NGROUPS + 1];
2053 * Set up the unprivileged user.
2057 cr->cr_groups[0] = -2;
2060 * Get the user's password table entry.
2062 names = strsep(&namelist, " \t\n");
2063 name = strsep(&names, ":");
2064 if (isdigit(*name) || *name == '-')
2065 pw = getpwuid(atoi(name));
2067 pw = getpwnam(name);
2069 * Credentials specified as those of a user.
2071 if (names == NULL) {
2073 syslog(LOG_ERR, "unknown user: %s", name);
2076 cr->cr_uid = pw->pw_uid;
2077 ngroups = NGROUPS + 1;
2078 if (getgrouplist(pw->pw_name, pw->pw_gid, groups, &ngroups))
2079 syslog(LOG_ERR, "too many groups");
2081 * Convert from int's to gid_t's and compress out duplicate
2083 cr->cr_ngroups = ngroups - 1;
2084 cr->cr_groups[0] = groups[0];
2085 for (cnt = 2; cnt < ngroups; cnt++)
2086 cr->cr_groups[cnt - 1] = groups[cnt];
2090 * Explicit credential specified as a colon separated list:
2094 cr->cr_uid = pw->pw_uid;
2095 else if (isdigit(*name) || *name == '-')
2096 cr->cr_uid = atoi(name);
2098 syslog(LOG_ERR, "unknown user: %s", name);
2102 while (names != NULL && *names != '\0' && cr->cr_ngroups < NGROUPS) {
2103 name = strsep(&names, ":");
2104 if (isdigit(*name) || *name == '-') {
2105 cr->cr_groups[cr->cr_ngroups++] = atoi(name);
2107 if ((gr = getgrnam(name)) == NULL) {
2108 syslog(LOG_ERR, "unknown group: %s", name);
2111 cr->cr_groups[cr->cr_ngroups++] = gr->gr_gid;
2114 if (names != NULL && *names != '\0' && cr->cr_ngroups == NGROUPS)
2115 syslog(LOG_ERR, "too many groups");
2118 #define STRSIZ (RPCMNT_NAMELEN+RPCMNT_PATHLEN+50)
2120 * Routines that maintain the remote mounttab
2125 struct mountlist *mlp, **mlpp;
2126 char *host, *dirp, *cp;
2130 if ((mlfile = fopen(_PATH_RMOUNTLIST, "r")) == NULL) {
2131 if (errno == ENOENT)
2134 syslog(LOG_ERR, "can't open %s", _PATH_RMOUNTLIST);
2139 while (fgets(str, STRSIZ, mlfile) != NULL) {
2141 host = strsep(&cp, " \t\n");
2142 dirp = strsep(&cp, " \t\n");
2143 if (host == NULL || dirp == NULL)
2145 mlp = (struct mountlist *)malloc(sizeof (*mlp));
2148 strncpy(mlp->ml_host, host, RPCMNT_NAMELEN);
2149 mlp->ml_host[RPCMNT_NAMELEN] = '\0';
2150 strncpy(mlp->ml_dirp, dirp, RPCMNT_PATHLEN);
2151 mlp->ml_dirp[RPCMNT_PATHLEN] = '\0';
2152 mlp->ml_next = NULL;
2154 mlpp = &mlp->ml_next;
2160 del_mlist(char *hostp, char *dirp)
2162 struct mountlist *mlp, **mlpp;
2163 struct mountlist *mlp2;
2170 if (!strcmp(mlp->ml_host, hostp) &&
2171 (!dirp || !strcmp(mlp->ml_dirp, dirp))) {
2174 *mlpp = mlp = mlp->ml_next;
2175 free((caddr_t)mlp2);
2177 mlpp = &mlp->ml_next;
2182 if ((mlfile = fopen(_PATH_RMOUNTLIST, "w")) == NULL) {
2183 syslog(LOG_ERR,"can't update %s", _PATH_RMOUNTLIST);
2188 fprintf(mlfile, "%s %s\n", mlp->ml_host, mlp->ml_dirp);
2196 add_mlist(char *hostp, char *dirp)
2198 struct mountlist *mlp, **mlpp;
2204 if (!strcmp(mlp->ml_host, hostp) && !strcmp(mlp->ml_dirp, dirp))
2206 mlpp = &mlp->ml_next;
2209 mlp = (struct mountlist *)malloc(sizeof (*mlp));
2212 strncpy(mlp->ml_host, hostp, RPCMNT_NAMELEN);
2213 mlp->ml_host[RPCMNT_NAMELEN] = '\0';
2214 strncpy(mlp->ml_dirp, dirp, RPCMNT_PATHLEN);
2215 mlp->ml_dirp[RPCMNT_PATHLEN] = '\0';
2216 mlp->ml_next = NULL;
2218 if ((mlfile = fopen(_PATH_RMOUNTLIST, "a")) == NULL) {
2219 syslog(LOG_ERR, "can't update %s", _PATH_RMOUNTLIST);
2222 fprintf(mlfile, "%s %s\n", mlp->ml_host, mlp->ml_dirp);
2227 * Free up a group list.
2230 free_grp(struct grouplist *grp)
2232 if (grp->gr_type == GT_HOST) {
2233 if (grp->gr_ptr.gt_addrinfo != NULL)
2234 freeaddrinfo(grp->gr_ptr.gt_addrinfo);
2235 } else if (grp->gr_type == GT_NET) {
2236 if (grp->gr_ptr.gt_net.nt_name)
2237 free(grp->gr_ptr.gt_net.nt_name);
2244 SYSLOG(int pri, const char *fmt, ...)
2249 vfprintf(stderr, fmt, ap);
2255 * Check options for consistency.
2258 check_options(struct dirlist *dp)
2263 if ((opt_flags & (OP_MAPROOT | OP_MAPALL)) == (OP_MAPROOT | OP_MAPALL) ||
2264 (opt_flags & (OP_MAPROOT | OP_KERB)) == (OP_MAPROOT | OP_KERB) ||
2265 (opt_flags & (OP_MAPALL | OP_KERB)) == (OP_MAPALL | OP_KERB)) {
2266 syslog(LOG_ERR, "-mapall, -maproot and -kerb mutually exclusive");
2269 if ((opt_flags & OP_MASK) && (opt_flags & OP_NET) == 0) {
2270 syslog(LOG_ERR, "-mask requires -network");
2273 if ((opt_flags & OP_ALLDIRS) && dp->dp_left) {
2274 syslog(LOG_ERR, "-alldirs has multiple directories");
2281 * Check an absolute directory path for any symbolic links. Return true
2284 check_dirpath(char *dirp)
2291 while (*cp && ret) {
2294 if (lstat(dirp, &sb) < 0 || !S_ISDIR(sb.st_mode))
2300 if (lstat(dirp, &sb) < 0 || !S_ISDIR(sb.st_mode))
2306 netpartcmp(struct sockaddr *s1, struct sockaddr *s2, int bitlen)
2310 if (s1->sa_family != s2->sa_family)
2313 switch (s1->sa_family) {
2315 src = &((struct sockaddr_in *)s1)->sin_addr;
2316 dst = &((struct sockaddr_in *)s2)->sin_addr;
2317 if (bitlen > sizeof(((struct sockaddr_in *)s1)->sin_addr) * 8)
2321 src = &((struct sockaddr_in6 *)s1)->sin6_addr;
2322 dst = &((struct sockaddr_in6 *)s2)->sin6_addr;
2323 if (((struct sockaddr_in6 *)s1)->sin6_scope_id !=
2324 ((struct sockaddr_in6 *)s2)->sin6_scope_id)
2326 if (bitlen > sizeof(((struct sockaddr_in6 *)s1)->sin6_addr) * 8)
2333 return bitcmp(src, dst, bitlen);
2337 allones(struct sockaddr_storage *ssp, int bitlen)
2340 int bytelen, bitsleft, i;
2343 switch (ssp->ss_family) {
2345 p = (u_int8_t *)&((struct sockaddr_in *)ssp)->sin_addr;
2346 zerolen = sizeof (((struct sockaddr_in *)ssp)->sin_addr);
2349 p = (u_int8_t *)&((struct sockaddr_in6 *)ssp)->sin6_addr;
2350 zerolen = sizeof (((struct sockaddr_in6 *)ssp)->sin6_addr);
2356 memset(p, 0, zerolen);
2358 bytelen = bitlen / 8;
2359 bitsleft = bitlen % 8;
2361 if (bytelen > zerolen)
2364 for (i = 0; i < bytelen; i++)
2367 for (i = 0; i < bitsleft; i++)
2374 countones(struct sockaddr *sa)
2377 int i, bits = 0, bytelen;
2380 switch (sa->sa_family) {
2382 mask = (u_int8_t *)&((struct sockaddr_in *)sa)->sin_addr;
2386 mask = (u_int8_t *)&((struct sockaddr_in6 *)sa)->sin6_addr;
2395 for (i = 0; i < bytelen; i++, p++) {
2397 for (bits = 0; bits < 8; bits++) {
2398 if (!(*p & (1 << (7 - bits))))
2405 return (i * 8 + bits);
2409 sacmp(struct sockaddr *sa1, struct sockaddr *sa2)
2414 if (sa1->sa_family != sa2->sa_family)
2417 switch (sa1->sa_family) {
2419 p1 = &((struct sockaddr_in *)sa1)->sin_addr;
2420 p2 = &((struct sockaddr_in *)sa2)->sin_addr;
2424 p1 = &((struct sockaddr_in6 *)sa1)->sin6_addr;
2425 p2 = &((struct sockaddr_in6 *)sa2)->sin6_addr;
2427 if (((struct sockaddr_in6 *)sa1)->sin6_scope_id !=
2428 ((struct sockaddr_in6 *)sa2)->sin6_scope_id)
2435 return memcmp(p1, p2, len);
2444 void terminate(int sig)
2446 pidfile_remove(pfh);
2447 rpcb_unset(RPCPROG_MNT, RPCMNT_VER1, NULL);
2448 rpcb_unset(RPCPROG_MNT, RPCMNT_VER3, NULL);