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 * 4. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 static const char copyright[] =
35 "@(#) Copyright (c) 1989, 1993\n\
36 The Regents of the University of California. All rights reserved.\n";
41 static char sccsid[] = "@(#)mountd.c 8.15 (Berkeley) 5/1/95";
45 #include <sys/cdefs.h>
46 __FBSDID("$FreeBSD$");
48 #include <sys/param.h>
49 #include <sys/fcntl.h>
50 #include <sys/linker.h>
51 #include <sys/module.h>
52 #include <sys/mount.h>
54 #include <sys/sysctl.h>
55 #include <sys/syslog.h>
58 #include <rpc/rpc_com.h>
59 #include <rpc/pmap_clnt.h>
60 #include <rpc/pmap_prot.h>
61 #include <rpcsvc/mount.h>
62 #include <nfs/nfsproto.h>
63 #include <nfs/nfssvc.h>
64 #include <nfsserver/nfs.h>
66 #include <fs/nfs/nfsport.h>
68 #include <arpa/inet.h>
83 #include "pathnames.h"
91 * Structures for keeping the mount list and export list
94 struct mountlist *ml_next;
95 char ml_host[MNTNAMLEN+1];
96 char ml_dirp[MNTPATHLEN+1];
100 struct dirlist *dp_left;
101 struct dirlist *dp_right;
103 struct hostlist *dp_hosts; /* List of hosts this dir exported to */
104 char dp_dirp[1]; /* Actually malloc'd to size of dir */
107 #define DP_DEFSET 0x1
108 #define DP_HOSTSET 0x2
111 struct exportlist *ex_next;
112 struct dirlist *ex_dirl;
113 struct dirlist *ex_defdir;
118 int ex_numsecflavors;
119 int ex_secflavors[MAXSECFLAVORS];
120 int ex_defnumsecflavors;
121 int ex_defsecflavors[MAXSECFLAVORS];
124 #define EX_LINKED 0x1
127 struct sockaddr_storage nt_net;
128 struct sockaddr_storage nt_mask;
133 struct addrinfo *gt_addrinfo;
134 struct netmsk gt_net;
139 union grouptypes gr_ptr;
140 struct grouplist *gr_next;
141 int gr_numsecflavors;
142 int gr_secflavors[MAXSECFLAVORS];
148 #define GT_DEFAULT 0x3
149 #define GT_IGNORE 0x5
152 int ht_flag; /* Uses DP_xx bits */
153 struct grouplist *ht_grp;
154 struct hostlist *ht_next;
161 int fhr_numsecflavors;
165 #define GETPORT_MAXTRY 20 /* Max tries to get a port # */
168 char *add_expdir(struct dirlist **, char *, int);
169 void add_dlist(struct dirlist **, struct dirlist *,
170 struct grouplist *, int, struct exportlist *);
171 void add_mlist(char *, char *);
172 int check_dirpath(char *);
173 int check_options(struct dirlist *);
174 int checkmask(struct sockaddr *sa);
175 int chk_host(struct dirlist *, struct sockaddr *, int *, int *, int *,
177 static char *strsep_quote(char **stringp, const char *delim);
178 static int create_service(struct netconfig *nconf);
179 static void complete_service(struct netconfig *nconf, char *port_str);
180 static void clearout_service(void);
181 void del_mlist(char *hostp, char *dirp);
182 struct dirlist *dirp_search(struct dirlist *, char *);
183 int do_mount(struct exportlist *, struct grouplist *, int,
184 struct xucred *, char *, int, struct statfs *);
185 int do_opt(char **, char **, struct exportlist *, struct grouplist *,
186 int *, int *, struct xucred *);
187 struct exportlist *ex_search(fsid_t *);
188 struct exportlist *get_exp(void);
189 void free_dir(struct dirlist *);
190 void free_exp(struct exportlist *);
191 void free_grp(struct grouplist *);
192 void free_host(struct hostlist *);
193 void get_exportlist(void);
194 int get_host(char *, struct grouplist *, struct grouplist *);
195 struct hostlist *get_ht(void);
197 void get_mountlist(void);
198 int get_net(char *, struct netmsk *, int);
199 void getexp_err(struct exportlist *, struct grouplist *);
200 struct grouplist *get_grp(void);
201 void hang_dirp(struct dirlist *, struct grouplist *,
202 struct exportlist *, int);
203 void huphandler(int sig);
204 int makemask(struct sockaddr_storage *ssp, int bitlen);
205 void mntsrv(struct svc_req *, SVCXPRT *);
206 void nextfield(char **, char **);
207 void out_of_mem(void);
208 void parsecred(char *, struct xucred *);
209 int parsesec(char *, struct exportlist *);
210 int put_exlist(struct dirlist *, XDR *, struct dirlist *, int *, int);
211 void *sa_rawaddr(struct sockaddr *sa, int *nbytes);
212 int sacmp(struct sockaddr *sa1, struct sockaddr *sa2,
213 struct sockaddr *samask);
214 int scan_tree(struct dirlist *, struct sockaddr *);
215 static void usage(void);
216 int xdr_dir(XDR *, char *);
217 int xdr_explist(XDR *, caddr_t);
218 int xdr_explist_brief(XDR *, caddr_t);
219 int xdr_explist_common(XDR *, caddr_t, int);
220 int xdr_fhs(XDR *, caddr_t);
221 int xdr_mlist(XDR *, caddr_t);
224 struct exportlist *exphead;
225 struct mountlist *mlhead;
226 struct grouplist *grphead;
227 char *exnames_default[2] = { _PATH_EXPORTS, NULL };
230 struct xucred def_anon = {
238 int resvport_only = 1;
245 char *svcport_str = NULL;
246 static int mallocd_svcport = 0;
248 static int sock_fdcnt;
249 static int sock_fdpos;
250 static int suspend_nfsd = 0;
253 static int have_v6 = 1;
255 int v4root_phase = 0;
256 char v4root_dirpath[PATH_MAX + 1];
257 int run_v4server = 1;
258 int has_publicfh = 0;
260 struct pidfh *pfh = NULL;
261 /* Bits for opt_flags above */
262 #define OP_MAPROOT 0x01
263 #define OP_MAPALL 0x02
267 #define OP_ALLDIRS 0x40
268 #define OP_HAVEMASK 0x80 /* A mask was specified or inferred. */
269 #define OP_QUIET 0x100
270 #define OP_MASKLEN 0x200
275 void SYSLOG(int, const char *, ...) __printflike(2, 3);
276 #define syslog SYSLOG
282 * Similar to strsep(), but it allows for quoted strings
283 * and escaped characters.
285 * It returns the string (or NULL, if *stringp is NULL),
286 * which is a de-quoted version of the string if necessary.
288 * It modifies *stringp in place.
291 strsep_quote(char **stringp, const char *delim)
293 char *srcptr, *dstptr, *retval;
296 if (stringp == NULL || *stringp == NULL)
299 srcptr = dstptr = retval = *stringp;
303 * We're looking for several edge cases here.
304 * First: if we're in quote state (quot != 0),
305 * then we ignore the delim characters, but otherwise
306 * process as normal, unless it is the quote character.
307 * Second: if the current character is a backslash,
308 * we take the next character as-is, without checking
309 * for delim, quote, or backslash. Exception: if the
310 * next character is a NUL, that's the end of the string.
311 * Third: if the character is a quote character, we toggle
313 * Otherwise: check the current character for NUL, or
314 * being in delim, and end the string if either is true.
316 if (*srcptr == '\\') {
319 * The edge case here is if the next character
320 * is NUL, we want to stop processing. But if
321 * it's not NUL, then we simply want to copy it.
324 *dstptr++ = *srcptr++;
328 if (quot == 0 && (*srcptr == '\'' || *srcptr == '"')) {
332 if (quot && *srcptr == quot) {
333 /* End of the quoted part */
338 if (!quot && strchr(delim, *srcptr))
340 *dstptr++ = *srcptr++;
343 *dstptr = 0; /* Terminate the string */
344 *stringp = (*srcptr == '\0') ? NULL : srcptr + 1;
349 * Mountd server for NFS mount protocol as described in:
350 * NFS: Network File System Protocol Specification, RFC1094, Appendix A
351 * The optional arguments are the exports file name
352 * default: _PATH_EXPORTS
353 * and "-n" to allow nonroot mount.
356 main(int argc, char **argv)
359 struct netconfig *nconf;
360 char *endptr, **hosts_bak;
365 int maxrec = RPC_MAXDATASIZE;
366 int attempt_cnt, port_len, port_pos, ret;
369 /* Check that another mountd isn't already running. */
370 pfh = pidfile_open(_PATH_MOUNTDPID, 0600, &otherpid);
373 errx(1, "mountd already running, pid: %d.", otherpid);
374 warn("cannot open or create pidfile");
377 s = socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP);
383 while ((c = getopt(argc, argv, "2deh:lnop:rS")) != -1)
389 /* now a no-op, since this is the default */
398 debug = debug ? 0 : 1;
408 svcport = (in_port_t)strtoul(optarg, &endptr, 10);
409 if (endptr == NULL || *endptr != '\0' ||
410 svcport == 0 || svcport >= IPPORT_MAX)
412 svcport_str = strdup(optarg);
417 hosts_bak = realloc(hosts, nhosts * sizeof(char *));
418 if (hosts_bak == NULL) {
420 for (k = 0; k < nhosts; k++)
427 hosts[nhosts - 1] = strdup(optarg);
428 if (hosts[nhosts - 1] == NULL) {
429 for (k = 0; k < (nhosts - 1); k++)
443 * Unless the "-o" option was specified, try and run "nfsd".
444 * If "-o" was specified, try and run "nfsserver".
446 if (run_v4server > 0) {
447 if (modfind("nfsd") < 0) {
448 /* Not present in kernel, try loading it */
449 if (kldload("nfsd") < 0 || modfind("nfsd") < 0)
450 errx(1, "NFS server is not available");
452 } else if (modfind("nfsserver") < 0) {
453 /* Not present in kernel, try loading it */
454 if (kldload("nfsserver") < 0 || modfind("nfsserver") < 0)
455 errx(1, "NFS server is not available");
460 grphead = (struct grouplist *)NULL;
461 exphead = (struct exportlist *)NULL;
462 mlhead = (struct mountlist *)NULL;
466 exnames = exnames_default;
467 openlog("mountd", LOG_PID, LOG_DAEMON);
469 warnx("getting export list");
472 warnx("getting mount list");
478 signal(SIGINT, SIG_IGN);
479 signal(SIGQUIT, SIG_IGN);
481 signal(SIGHUP, huphandler);
482 signal(SIGTERM, terminate);
483 signal(SIGPIPE, SIG_IGN);
487 rpcb_unset(MOUNTPROG, MOUNTVERS, NULL);
488 rpcb_unset(MOUNTPROG, MOUNTVERS3, NULL);
489 rpc_control(RPC_SVC_CONNMAXREC_SET, &maxrec);
491 if (!resvport_only) {
492 if (sysctlbyname("vfs.nfsrv.nfs_privport", NULL, NULL,
493 &resvport_only, sizeof(resvport_only)) != 0 &&
495 syslog(LOG_ERR, "sysctl: %m");
501 * If no hosts were specified, add a wildcard entry to bind to
502 * INADDR_ANY. Otherwise make sure 127.0.0.1 and ::1 are added to the
506 hosts = malloc(sizeof(char**));
514 hosts_bak = realloc(hosts, (nhosts + 2) *
516 if (hosts_bak == NULL) {
517 for (k = 0; k < nhosts; k++)
524 hosts[nhosts - 2] = "::1";
526 hosts_bak = realloc(hosts, (nhosts + 1) * sizeof(char *));
527 if (hosts_bak == NULL) {
528 for (k = 0; k < nhosts; k++)
538 hosts[nhosts - 1] = "127.0.0.1";
546 nc_handle = setnetconfig();
547 while ((nconf = getnetconfig(nc_handle))) {
548 if (nconf->nc_flag & NC_VISIBLE) {
549 if (have_v6 == 0 && strcmp(nconf->nc_protofmly,
553 ret = create_service(nconf);
555 /* Ignore this call */
559 * Failed to bind port, so close off
560 * all sockets created and try again
561 * if the port# was dynamically
562 * assigned via bind(2).
565 if (mallocd_svcport != 0 &&
566 attempt_cnt < GETPORT_MAXTRY) {
573 "bindresvport_sa: %m");
577 /* Start over at the first service. */
581 nc_handle = setnetconfig();
583 } else if (mallocd_svcport != 0 &&
584 attempt_cnt == GETPORT_MAXTRY) {
586 * For the last attempt, allow
587 * different port #s for each nconf
588 * by saving the svcport_str and
589 * setting it back to NULL.
591 port_list = realloc(port_list,
592 (port_len + 1) * sizeof(char *));
593 if (port_list == NULL)
595 port_list[port_len++] = svcport_str;
604 * Successfully bound the ports, so call complete_service() to
605 * do the rest of the setup on the service(s).
609 nc_handle = setnetconfig();
610 while ((nconf = getnetconfig(nc_handle))) {
611 if (nconf->nc_flag & NC_VISIBLE) {
612 if (have_v6 == 0 && strcmp(nconf->nc_protofmly,
615 } else if (port_list != NULL) {
616 if (port_pos >= port_len) {
617 syslog(LOG_ERR, "too many port#s");
620 complete_service(nconf, port_list[port_pos++]);
622 complete_service(nconf, svcport_str);
625 endnetconfig(nc_handle);
627 if (port_list != NULL) {
628 for (port_pos = 0; port_pos < port_len; port_pos++)
629 free(port_list[port_pos]);
634 syslog(LOG_ERR, "could not create any services");
638 /* Expand svc_run() here so that we can call get_exportlist(). */
645 switch (select(svc_maxfd + 1, &readfds, NULL, NULL, NULL)) {
649 syslog(LOG_ERR, "mountd died: select: %m");
654 svc_getreqset(&readfds);
660 * This routine creates and binds sockets on the appropriate
661 * addresses. It gets called one time for each transport.
662 * It returns 0 upon success, 1 for ingore the call and -1 to indicate
663 * bind failed with EADDRINUSE.
664 * Any file descriptors that have been created are stored in sock_fd and
665 * the total count of them is maintained in sock_fdcnt.
668 create_service(struct netconfig *nconf)
670 struct addrinfo hints, *res = NULL;
671 struct sockaddr_in *sin;
672 struct sockaddr_in6 *sin6;
673 struct __rpc_sockinfo si;
679 u_int32_t host_addr[4]; /* IPv4 or IPv6 */
682 if ((nconf->nc_semantics != NC_TPI_CLTS) &&
683 (nconf->nc_semantics != NC_TPI_COTS) &&
684 (nconf->nc_semantics != NC_TPI_COTS_ORD))
685 return (1); /* not my type */
688 * XXX - using RPC library internal functions.
690 if (!__rpc_nconf2sockinfo(nconf, &si)) {
691 syslog(LOG_ERR, "cannot get information for %s",
696 /* Get mountd's address on this transport */
697 memset(&hints, 0, sizeof hints);
698 hints.ai_family = si.si_af;
699 hints.ai_socktype = si.si_socktype;
700 hints.ai_protocol = si.si_proto;
703 * Bind to specific IPs if asked to
706 while (nhostsbak > 0) {
708 sock_fd = realloc(sock_fd, (sock_fdcnt + 1) * sizeof(int));
711 sock_fd[sock_fdcnt++] = -1; /* Set invalid for now. */
714 hints.ai_flags = AI_PASSIVE;
717 * XXX - using RPC library internal functions.
719 if ((fd = __rpc_nconf2fd(nconf)) < 0) {
721 if (errno == EAFNOSUPPORT &&
722 nconf->nc_semantics != NC_TPI_CLTS)
725 syslog(non_fatal ? LOG_DEBUG : LOG_ERR,
726 "cannot create socket for %s", nconf->nc_netid);
732 switch (hints.ai_family) {
734 if (inet_pton(AF_INET, hosts[nhostsbak],
736 hints.ai_flags |= AI_NUMERICHOST;
739 * Skip if we have an AF_INET6 address.
741 if (inet_pton(AF_INET6, hosts[nhostsbak],
749 if (inet_pton(AF_INET6, hosts[nhostsbak],
751 hints.ai_flags |= AI_NUMERICHOST;
754 * Skip if we have an AF_INET address.
756 if (inet_pton(AF_INET, hosts[nhostsbak],
764 * We're doing host-based access checks here, so don't
765 * allow v4-in-v6 to confuse things. The kernel will
766 * disable it by default on NFS sockets too.
768 if (setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &one,
771 "can't disable v4-in-v6 on IPv6 socket");
780 * If no hosts were specified, just bind to INADDR_ANY
782 if (strcmp("*", hosts[nhostsbak]) == 0) {
783 if (svcport_str == NULL) {
784 res = malloc(sizeof(struct addrinfo));
788 res->ai_flags = hints.ai_flags;
789 res->ai_family = hints.ai_family;
790 res->ai_protocol = hints.ai_protocol;
791 switch (res->ai_family) {
793 sin = malloc(sizeof(struct sockaddr_in));
796 sin->sin_family = AF_INET;
797 sin->sin_port = htons(0);
798 sin->sin_addr.s_addr = htonl(INADDR_ANY);
799 res->ai_addr = (struct sockaddr*) sin;
800 res->ai_addrlen = (socklen_t)
801 sizeof(struct sockaddr_in);
804 sin6 = malloc(sizeof(struct sockaddr_in6));
807 sin6->sin6_family = AF_INET6;
808 sin6->sin6_port = htons(0);
809 sin6->sin6_addr = in6addr_any;
810 res->ai_addr = (struct sockaddr*) sin6;
811 res->ai_addrlen = (socklen_t)
812 sizeof(struct sockaddr_in6);
815 syslog(LOG_ERR, "bad addr fam %d",
820 if ((aicode = getaddrinfo(NULL, svcport_str,
821 &hints, &res)) != 0) {
823 "cannot get local address for %s: %s",
825 gai_strerror(aicode));
831 if ((aicode = getaddrinfo(hosts[nhostsbak], svcport_str,
832 &hints, &res)) != 0) {
834 "cannot get local address for %s: %s",
835 nconf->nc_netid, gai_strerror(aicode));
842 sock_fd[sock_fdcnt - 1] = fd;
844 /* Now, attempt the bind. */
845 r = bindresvport_sa(fd, res->ai_addr);
847 if (errno == EADDRINUSE && mallocd_svcport != 0) {
848 if (mallocd_res != 0) {
855 syslog(LOG_ERR, "bindresvport_sa: %m");
859 if (svcport_str == NULL) {
860 svcport_str = malloc(NI_MAXSERV * sizeof(char));
861 if (svcport_str == NULL)
865 if (getnameinfo(res->ai_addr,
866 res->ai_addr->sa_len, NULL, NI_MAXHOST,
867 svcport_str, NI_MAXSERV * sizeof(char),
868 NI_NUMERICHOST | NI_NUMERICSERV))
869 errx(1, "Cannot get port number");
871 if (mallocd_res != 0) {
882 * Called after all the create_service() calls have succeeded, to complete
883 * the setup and registration.
886 complete_service(struct netconfig *nconf, char *port_str)
888 struct addrinfo hints, *res = NULL;
889 struct __rpc_sockinfo si;
890 struct netbuf servaddr;
891 SVCXPRT *transp = NULL;
892 int aicode, fd, nhostsbak;
895 if ((nconf->nc_semantics != NC_TPI_CLTS) &&
896 (nconf->nc_semantics != NC_TPI_COTS) &&
897 (nconf->nc_semantics != NC_TPI_COTS_ORD))
898 return; /* not my type */
901 * XXX - using RPC library internal functions.
903 if (!__rpc_nconf2sockinfo(nconf, &si)) {
904 syslog(LOG_ERR, "cannot get information for %s",
910 while (nhostsbak > 0) {
912 if (sock_fdpos >= sock_fdcnt) {
913 /* Should never happen. */
914 syslog(LOG_ERR, "Ran out of socket fd's");
917 fd = sock_fd[sock_fdpos++];
921 if (nconf->nc_semantics != NC_TPI_CLTS)
922 listen(fd, SOMAXCONN);
924 if (nconf->nc_semantics == NC_TPI_CLTS )
925 transp = svc_dg_create(fd, 0, 0);
927 transp = svc_vc_create(fd, RPC_MAXDATASIZE,
930 if (transp != (SVCXPRT *) NULL) {
931 if (!svc_reg(transp, MOUNTPROG, MOUNTVERS, mntsrv,
934 "can't register %s MOUNTVERS service",
937 if (!svc_reg(transp, MOUNTPROG, MOUNTVERS3,
940 "can't register %s MOUNTVERS3 service",
944 syslog(LOG_WARNING, "can't create %s services",
947 if (registered == 0) {
949 memset(&hints, 0, sizeof hints);
950 hints.ai_flags = AI_PASSIVE;
951 hints.ai_family = si.si_af;
952 hints.ai_socktype = si.si_socktype;
953 hints.ai_protocol = si.si_proto;
955 if ((aicode = getaddrinfo(NULL, port_str, &hints,
957 syslog(LOG_ERR, "cannot get local address: %s",
958 gai_strerror(aicode));
962 servaddr.buf = malloc(res->ai_addrlen);
963 memcpy(servaddr.buf, res->ai_addr, res->ai_addrlen);
964 servaddr.len = res->ai_addrlen;
966 rpcb_set(MOUNTPROG, MOUNTVERS, nconf, &servaddr);
967 rpcb_set(MOUNTPROG, MOUNTVERS3, nconf, &servaddr);
976 * Clear out sockets after a failure to bind one of them, so that the
977 * cycle of socket creation/binding can start anew.
980 clearout_service(void)
984 for (i = 0; i < sock_fdcnt; i++) {
985 if (sock_fd[i] >= 0) {
986 shutdown(sock_fd[i], SHUT_RDWR);
996 "usage: mountd [-2] [-d] [-e] [-l] [-n] [-p <port>] [-r] "
997 "[-S] [-h <bindip>] [export_file ...]\n");
1002 * The mount rpc service
1005 mntsrv(struct svc_req *rqstp, SVCXPRT *transp)
1007 struct exportlist *ep;
1009 struct fhreturn fhr;
1012 char host[NI_MAXHOST], numerichost[NI_MAXHOST];
1013 int lookup_failed = 1;
1014 struct sockaddr *saddr;
1016 char rpcpath[MNTPATHLEN + 1], dirpath[MAXPATHLEN];
1017 int bad = 0, defset, hostset;
1018 sigset_t sighup_mask;
1019 int numsecflavors, *secflavorsp;
1021 sigemptyset(&sighup_mask);
1022 sigaddset(&sighup_mask, SIGHUP);
1023 saddr = svc_getrpccaller(transp)->buf;
1024 switch (saddr->sa_family) {
1026 sport = ntohs(((struct sockaddr_in6 *)saddr)->sin6_port);
1029 sport = ntohs(((struct sockaddr_in *)saddr)->sin_port);
1032 syslog(LOG_ERR, "request from unknown address family");
1035 lookup_failed = getnameinfo(saddr, saddr->sa_len, host, sizeof host,
1037 getnameinfo(saddr, saddr->sa_len, numerichost,
1038 sizeof numerichost, NULL, 0, NI_NUMERICHOST);
1039 switch (rqstp->rq_proc) {
1041 if (!svc_sendreply(transp, (xdrproc_t)xdr_void, NULL))
1042 syslog(LOG_ERR, "can't send reply");
1045 if (sport >= IPPORT_RESERVED && resvport_only) {
1047 "mount request from %s from unprivileged port",
1049 svcerr_weakauth(transp);
1052 if (!svc_getargs(transp, (xdrproc_t)xdr_dir, rpcpath)) {
1053 syslog(LOG_NOTICE, "undecodable mount request from %s",
1055 svcerr_decode(transp);
1060 * Get the real pathname and make sure it is a directory
1061 * or a regular file if the -r option was specified
1064 if (realpath(rpcpath, dirpath) == NULL ||
1065 stat(dirpath, &stb) < 0 ||
1066 (!S_ISDIR(stb.st_mode) &&
1067 (dir_only || !S_ISREG(stb.st_mode))) ||
1068 statfs(dirpath, &fsb) < 0) {
1069 chdir("/"); /* Just in case realpath doesn't */
1071 "mount request from %s for non existent path %s",
1072 numerichost, dirpath);
1074 warnx("stat failed on %s", dirpath);
1075 bad = ENOENT; /* We will send error reply later */
1078 /* Check in the exports list */
1079 sigprocmask(SIG_BLOCK, &sighup_mask, NULL);
1080 ep = ex_search(&fsb.f_fsid);
1081 hostset = defset = 0;
1082 if (ep && (chk_host(ep->ex_defdir, saddr, &defset, &hostset,
1083 &numsecflavors, &secflavorsp) ||
1084 ((dp = dirp_search(ep->ex_dirl, dirpath)) &&
1085 chk_host(dp, saddr, &defset, &hostset, &numsecflavors,
1087 (defset && scan_tree(ep->ex_defdir, saddr) == 0 &&
1088 scan_tree(ep->ex_dirl, saddr) == 0))) {
1090 if (!svc_sendreply(transp, (xdrproc_t)xdr_long,
1092 syslog(LOG_ERR, "can't send reply");
1093 sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
1096 if (hostset & DP_HOSTSET) {
1097 fhr.fhr_flag = hostset;
1098 fhr.fhr_numsecflavors = numsecflavors;
1099 fhr.fhr_secflavors = secflavorsp;
1101 fhr.fhr_flag = defset;
1102 fhr.fhr_numsecflavors = ep->ex_defnumsecflavors;
1103 fhr.fhr_secflavors = ep->ex_defsecflavors;
1105 fhr.fhr_vers = rqstp->rq_vers;
1106 /* Get the file handle */
1107 memset(&fhr.fhr_fh, 0, sizeof(nfsfh_t));
1108 if (getfh(dirpath, (fhandle_t *)&fhr.fhr_fh) < 0) {
1110 syslog(LOG_ERR, "can't get fh for %s", dirpath);
1111 if (!svc_sendreply(transp, (xdrproc_t)xdr_long,
1113 syslog(LOG_ERR, "can't send reply");
1114 sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
1117 if (!svc_sendreply(transp, (xdrproc_t)xdr_fhs,
1119 syslog(LOG_ERR, "can't send reply");
1121 add_mlist(host, dirpath);
1123 add_mlist(numerichost, dirpath);
1125 warnx("mount successful");
1128 "mount request succeeded from %s for %s",
1129 numerichost, dirpath);
1133 "mount request denied from %s for %s",
1134 numerichost, dirpath);
1137 if (bad && !svc_sendreply(transp, (xdrproc_t)xdr_long,
1139 syslog(LOG_ERR, "can't send reply");
1140 sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
1142 case MOUNTPROC_DUMP:
1143 if (!svc_sendreply(transp, (xdrproc_t)xdr_mlist, (caddr_t)NULL))
1144 syslog(LOG_ERR, "can't send reply");
1147 "dump request succeeded from %s",
1150 case MOUNTPROC_UMNT:
1151 if (sport >= IPPORT_RESERVED && resvport_only) {
1153 "umount request from %s from unprivileged port",
1155 svcerr_weakauth(transp);
1158 if (!svc_getargs(transp, (xdrproc_t)xdr_dir, rpcpath)) {
1159 syslog(LOG_NOTICE, "undecodable umount request from %s",
1161 svcerr_decode(transp);
1164 if (realpath(rpcpath, dirpath) == NULL) {
1165 syslog(LOG_NOTICE, "umount request from %s "
1166 "for non existent path %s",
1167 numerichost, dirpath);
1169 if (!svc_sendreply(transp, (xdrproc_t)xdr_void, (caddr_t)NULL))
1170 syslog(LOG_ERR, "can't send reply");
1172 del_mlist(host, dirpath);
1173 del_mlist(numerichost, dirpath);
1176 "umount request succeeded from %s for %s",
1177 numerichost, dirpath);
1179 case MOUNTPROC_UMNTALL:
1180 if (sport >= IPPORT_RESERVED && resvport_only) {
1182 "umountall request from %s from unprivileged port",
1184 svcerr_weakauth(transp);
1187 if (!svc_sendreply(transp, (xdrproc_t)xdr_void, (caddr_t)NULL))
1188 syslog(LOG_ERR, "can't send reply");
1190 del_mlist(host, NULL);
1191 del_mlist(numerichost, NULL);
1194 "umountall request succeeded from %s",
1197 case MOUNTPROC_EXPORT:
1198 if (!svc_sendreply(transp, (xdrproc_t)xdr_explist, (caddr_t)NULL))
1199 if (!svc_sendreply(transp, (xdrproc_t)xdr_explist_brief,
1201 syslog(LOG_ERR, "can't send reply");
1204 "export request succeeded from %s",
1208 svcerr_noproc(transp);
1214 * Xdr conversion for a dirpath string
1217 xdr_dir(XDR *xdrsp, char *dirp)
1219 return (xdr_string(xdrsp, &dirp, MNTPATHLEN));
1223 * Xdr routine to generate file handle reply
1226 xdr_fhs(XDR *xdrsp, caddr_t cp)
1228 struct fhreturn *fhrp = (struct fhreturn *)cp;
1229 u_long ok = 0, len, auth;
1232 if (!xdr_long(xdrsp, &ok))
1234 switch (fhrp->fhr_vers) {
1236 return (xdr_opaque(xdrsp, (caddr_t)&fhrp->fhr_fh, NFSX_V2FH));
1239 if (!xdr_long(xdrsp, &len))
1241 if (!xdr_opaque(xdrsp, (caddr_t)&fhrp->fhr_fh, len))
1243 if (fhrp->fhr_numsecflavors) {
1244 if (!xdr_int(xdrsp, &fhrp->fhr_numsecflavors))
1246 for (i = 0; i < fhrp->fhr_numsecflavors; i++)
1247 if (!xdr_int(xdrsp, &fhrp->fhr_secflavors[i]))
1253 if (!xdr_long(xdrsp, &len))
1255 return (xdr_long(xdrsp, &auth));
1262 xdr_mlist(XDR *xdrsp, caddr_t cp __unused)
1264 struct mountlist *mlp;
1271 if (!xdr_bool(xdrsp, &true))
1273 strp = &mlp->ml_host[0];
1274 if (!xdr_string(xdrsp, &strp, MNTNAMLEN))
1276 strp = &mlp->ml_dirp[0];
1277 if (!xdr_string(xdrsp, &strp, MNTPATHLEN))
1281 if (!xdr_bool(xdrsp, &false))
1287 * Xdr conversion for export list
1290 xdr_explist_common(XDR *xdrsp, caddr_t cp __unused, int brief)
1292 struct exportlist *ep;
1295 sigset_t sighup_mask;
1297 sigemptyset(&sighup_mask);
1298 sigaddset(&sighup_mask, SIGHUP);
1299 sigprocmask(SIG_BLOCK, &sighup_mask, NULL);
1303 if (put_exlist(ep->ex_dirl, xdrsp, ep->ex_defdir,
1306 if (ep->ex_defdir && putdef == 0 &&
1307 put_exlist(ep->ex_defdir, xdrsp, (struct dirlist *)NULL,
1312 sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
1313 if (!xdr_bool(xdrsp, &false))
1317 sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
1322 * Called from xdr_explist() to traverse the tree and export the
1326 put_exlist(struct dirlist *dp, XDR *xdrsp, struct dirlist *adp, int *putdefp,
1329 struct grouplist *grp;
1330 struct hostlist *hp;
1337 if (put_exlist(dp->dp_left, xdrsp, adp, putdefp, brief))
1339 if (!xdr_bool(xdrsp, &true))
1342 if (!xdr_string(xdrsp, &strp, MNTPATHLEN))
1344 if (adp && !strcmp(dp->dp_dirp, adp->dp_dirp)) {
1349 if (!xdr_bool(xdrsp, &true))
1352 if (!xdr_string(xdrsp, &strp, MNTPATHLEN))
1354 } else if ((dp->dp_flag & DP_DEFSET) == 0 &&
1355 (gotalldir == 0 || (adp->dp_flag & DP_DEFSET) == 0)) {
1359 if (grp->gr_type == GT_HOST) {
1360 if (!xdr_bool(xdrsp, &true))
1362 strp = grp->gr_ptr.gt_addrinfo->ai_canonname;
1363 if (!xdr_string(xdrsp, &strp,
1366 } else if (grp->gr_type == GT_NET) {
1367 if (!xdr_bool(xdrsp, &true))
1369 strp = grp->gr_ptr.gt_net.nt_name;
1370 if (!xdr_string(xdrsp, &strp,
1375 if (gotalldir && hp == (struct hostlist *)NULL) {
1381 if (!xdr_bool(xdrsp, &false))
1383 if (put_exlist(dp->dp_right, xdrsp, adp, putdefp, brief))
1390 xdr_explist(XDR *xdrsp, caddr_t cp)
1393 return xdr_explist_common(xdrsp, cp, 0);
1397 xdr_explist_brief(XDR *xdrsp, caddr_t cp)
1400 return xdr_explist_common(xdrsp, cp, 1);
1408 * Get the export list from one, currently open file
1411 get_exportlist_one(void)
1413 struct exportlist *ep, *ep2;
1414 struct grouplist *grp, *tgrp;
1415 struct exportlist **epp;
1416 struct dirlist *dirhead;
1419 char *cp, *endcp, *dirp, *hst, *usr, *dom, savedc;
1420 int len, has_host, exflags, got_nondir, dirplen, netgrp;
1423 dirhead = (struct dirlist *)NULL;
1424 while (get_line()) {
1426 warnx("got line %s", line);
1428 nextfield(&cp, &endcp);
1437 exflags = MNT_EXPORTED;
1440 ep = (struct exportlist *)NULL;
1444 * Handle the V4 root dir.
1446 if (*cp == 'V' && *(cp + 1) == '4' && *(cp + 2) == ':') {
1448 * V4: just indicates that it is the v4 root point,
1449 * so skip over that and set v4root_phase.
1451 if (v4root_phase > 0) {
1452 syslog(LOG_ERR, "V4:duplicate line, ignored");
1457 nextfield(&cp, &endcp);
1461 * Create new exports list entry
1464 tgrp = grp = get_grp();
1466 if (len > MNTNAMLEN) {
1467 getexp_err(ep, tgrp);
1471 if (ep == (struct exportlist *)NULL) {
1472 getexp_err(ep, tgrp);
1476 warnx("doing opt %s", cp);
1478 if (do_opt(&cp, &endcp, ep, grp, &has_host,
1480 getexp_err(ep, tgrp);
1483 } else if (*cp == '/') {
1486 if (v4root_phase > 1) {
1488 syslog(LOG_ERR, "Multiple V4 dirs");
1489 getexp_err(ep, tgrp);
1493 if (check_dirpath(cp) &&
1494 statfs(cp, &fsb) >= 0) {
1495 if ((fsb.f_flags & MNT_AUTOMOUNTED) != 0)
1496 syslog(LOG_ERR, "Warning: exporting of "
1497 "automounted fs %s not supported", cp);
1499 syslog(LOG_ERR, "dirs must be first");
1500 getexp_err(ep, tgrp);
1503 if (v4root_phase == 1) {
1505 syslog(LOG_ERR, "Multiple V4 dirs");
1506 getexp_err(ep, tgrp);
1509 if (strlen(v4root_dirpath) == 0) {
1510 strlcpy(v4root_dirpath, cp,
1511 sizeof (v4root_dirpath));
1512 } else if (strcmp(v4root_dirpath, cp)
1515 "different V4 dirpath %s", cp);
1516 getexp_err(ep, tgrp);
1525 if (ep->ex_fs.val[0] !=
1526 fsb.f_fsid.val[0] ||
1528 fsb.f_fsid.val[1]) {
1529 getexp_err(ep, tgrp);
1534 * See if this directory is already
1537 ep = ex_search(&fsb.f_fsid);
1538 if (ep == (struct exportlist *)NULL) {
1540 ep->ex_fs = fsb.f_fsid;
1541 ep->ex_fsdir = (char *)malloc
1542 (strlen(fsb.f_mntonname) + 1);
1544 strcpy(ep->ex_fsdir,
1550 "making new ep fs=0x%x,0x%x",
1554 warnx("found ep fs=0x%x,0x%x",
1560 * Add dirpath to export mount point.
1562 dirp = add_expdir(&dirhead, cp, len);
1566 getexp_err(ep, tgrp);
1574 if (ep == (struct exportlist *)NULL) {
1575 getexp_err(ep, tgrp);
1580 * Get the host or netgroup.
1583 netgrp = getnetgrent(&hst, &usr, &dom);
1586 grp->gr_next = get_grp();
1592 "null hostname in netgroup %s, skipping", cp);
1593 grp->gr_type = GT_IGNORE;
1594 } else if (get_host(hst, grp, tgrp)) {
1596 "bad host %s in netgroup %s, skipping", hst, cp);
1597 grp->gr_type = GT_IGNORE;
1599 } else if (get_host(cp, grp, tgrp)) {
1600 syslog(LOG_ERR, "bad host %s, skipping", cp);
1601 grp->gr_type = GT_IGNORE;
1604 } while (netgrp && getnetgrent(&hst, &usr, &dom));
1609 nextfield(&cp, &endcp);
1612 if (check_options(dirhead)) {
1613 getexp_err(ep, tgrp);
1617 grp->gr_type = GT_DEFAULT;
1619 warnx("adding a default entry");
1622 * Don't allow a network export coincide with a list of
1623 * host(s) on the same line.
1625 } else if ((opt_flags & OP_NET) && tgrp->gr_next) {
1626 syslog(LOG_ERR, "network/host conflict");
1627 getexp_err(ep, tgrp);
1631 * If an export list was specified on this line, make sure
1632 * that we have at least one valid entry, otherwise skip it.
1636 while (grp && grp->gr_type == GT_IGNORE)
1639 getexp_err(ep, tgrp);
1644 if (v4root_phase == 1) {
1645 syslog(LOG_ERR, "V4:root, no dirp, ignored");
1646 getexp_err(ep, tgrp);
1651 * Loop through hosts, pushing the exports into the kernel.
1652 * After loop, tgrp points to the start of the list and
1653 * grp points to the last entry in the list.
1657 if (do_mount(ep, grp, exflags, &anon, dirp, dirplen,
1659 getexp_err(ep, tgrp);
1662 } while (grp->gr_next && (grp = grp->gr_next));
1665 * For V4: don't enter in mount lists.
1667 if (v4root_phase > 0 && v4root_phase <= 2) {
1669 * Since these structures aren't used by mountd,
1674 while (tgrp != NULL) {
1676 tgrp = tgrp->gr_next;
1683 * Success. Update the data structures.
1686 hang_dirp(dirhead, tgrp, ep, opt_flags);
1687 grp->gr_next = grphead;
1690 hang_dirp(dirhead, (struct grouplist *)NULL, ep,
1694 dirhead = (struct dirlist *)NULL;
1695 if ((ep->ex_flag & EX_LINKED) == 0) {
1700 * Insert in the list in alphabetical order.
1702 while (ep2 && strcmp(ep2->ex_fsdir, ep->ex_fsdir) < 0) {
1703 epp = &ep2->ex_next;
1709 ep->ex_flag |= EX_LINKED;
1715 dirhead = (struct dirlist *)NULL;
1721 * Get the export list from all specified files
1724 get_exportlist(void)
1726 struct exportlist *ep, *ep2;
1727 struct grouplist *grp, *tgrp;
1728 struct export_args export;
1730 struct statfs *fsp, *mntbufp;
1731 struct xvfsconf vfc;
1736 struct nfsex_args eargs;
1738 if (suspend_nfsd != 0)
1739 (void)nfssvc(NFSSVC_SUSPENDNFSD, NULL);
1740 v4root_dirpath[0] = '\0';
1741 bzero(&export, sizeof(export));
1742 export.ex_flags = MNT_DELEXPORT;
1745 bzero(errmsg, sizeof(errmsg));
1748 * First, get rid of the old list
1756 exphead = (struct exportlist *)NULL;
1764 grphead = (struct grouplist *)NULL;
1767 * and the old V4 root dir.
1769 bzero(&eargs, sizeof (eargs));
1770 eargs.export.ex_flags = MNT_DELEXPORT;
1771 if (run_v4server > 0 &&
1772 nfssvc(NFSSVC_V4ROOTEXPORT, (caddr_t)&eargs) < 0 &&
1774 syslog(LOG_ERR, "Can't delete exports for V4:");
1777 * and clear flag that notes if a public fh has been exported.
1782 * And delete exports that are in the kernel for all local
1784 * XXX: Should know how to handle all local exportable filesystems.
1786 num = getmntinfo(&mntbufp, MNT_NOWAIT);
1789 build_iovec(&iov, &iovlen, "fstype", NULL, 0);
1790 build_iovec(&iov, &iovlen, "fspath", NULL, 0);
1791 build_iovec(&iov, &iovlen, "from", NULL, 0);
1792 build_iovec(&iov, &iovlen, "update", NULL, 0);
1793 build_iovec(&iov, &iovlen, "export", &export, sizeof(export));
1794 build_iovec(&iov, &iovlen, "errmsg", errmsg, sizeof(errmsg));
1797 for (i = 0; i < num; i++) {
1799 if (getvfsbyname(fsp->f_fstypename, &vfc) != 0) {
1800 syslog(LOG_ERR, "getvfsbyname() failed for %s",
1806 * We do not need to delete "export" flag from
1807 * filesystems that do not have it set.
1809 if (!(fsp->f_flags & MNT_EXPORTED))
1812 * Do not delete export for network filesystem by
1813 * passing "export" arg to nmount().
1814 * It only makes sense to do this for local filesystems.
1816 if (vfc.vfc_flags & VFCF_NETWORK)
1819 iov[1].iov_base = fsp->f_fstypename;
1820 iov[1].iov_len = strlen(fsp->f_fstypename) + 1;
1821 iov[3].iov_base = fsp->f_mntonname;
1822 iov[3].iov_len = strlen(fsp->f_mntonname) + 1;
1823 iov[5].iov_base = fsp->f_mntfromname;
1824 iov[5].iov_len = strlen(fsp->f_mntfromname) + 1;
1828 * EXDEV is returned when path exists but is not a
1829 * mount point. May happens if raced with unmount.
1831 if (nmount(iov, iovlen, fsp->f_flags) < 0 &&
1832 errno != ENOENT && errno != ENOTSUP && errno != EXDEV) {
1834 "can't delete exports for %s: %m %s",
1835 fsp->f_mntonname, errmsg);
1840 /* Free strings allocated by strdup() in getmntopts.c */
1841 free(iov[0].iov_base); /* fstype */
1842 free(iov[2].iov_base); /* fspath */
1843 free(iov[4].iov_base); /* from */
1844 free(iov[6].iov_base); /* update */
1845 free(iov[8].iov_base); /* export */
1846 free(iov[10].iov_base); /* errmsg */
1848 /* free iov, allocated by realloc() */
1854 * Read in the exports file and build the list, calling
1855 * nmount() as we go along to push the export rules into the kernel.
1858 for (i = 0; exnames[i] != NULL; i++) {
1860 warnx("reading exports from %s", exnames[i]);
1861 if ((exp_file = fopen(exnames[i], "r")) == NULL) {
1862 syslog(LOG_WARNING, "can't open %s", exnames[i]);
1865 get_exportlist_one();
1870 syslog(LOG_ERR, "can't open any exports file");
1875 * If there was no public fh, clear any previous one set.
1877 if (run_v4server > 0 && has_publicfh == 0)
1878 (void) nfssvc(NFSSVC_NOPUBLICFH, NULL);
1880 /* Resume the nfsd. If they weren't suspended, this is harmless. */
1881 (void)nfssvc(NFSSVC_RESUMENFSD, NULL);
1885 * Allocate an export list element
1890 struct exportlist *ep;
1892 ep = (struct exportlist *)calloc(1, sizeof (struct exportlist));
1893 if (ep == (struct exportlist *)NULL)
1899 * Allocate a group list element
1904 struct grouplist *gp;
1906 gp = (struct grouplist *)calloc(1, sizeof (struct grouplist));
1907 if (gp == (struct grouplist *)NULL)
1913 * Clean up upon an error in get_exportlist().
1916 getexp_err(struct exportlist *ep, struct grouplist *grp)
1918 struct grouplist *tgrp;
1920 if (!(opt_flags & OP_QUIET))
1921 syslog(LOG_ERR, "bad exports list line %s", line);
1922 if (ep && (ep->ex_flag & EX_LINKED) == 0)
1932 * Search the export list for a matching fs.
1935 ex_search(fsid_t *fsid)
1937 struct exportlist *ep;
1941 if (ep->ex_fs.val[0] == fsid->val[0] &&
1942 ep->ex_fs.val[1] == fsid->val[1])
1950 * Add a directory path to the list.
1953 add_expdir(struct dirlist **dpp, char *cp, int len)
1957 dp = (struct dirlist *)malloc(sizeof (struct dirlist) + len);
1958 if (dp == (struct dirlist *)NULL)
1961 dp->dp_right = (struct dirlist *)NULL;
1963 dp->dp_hosts = (struct hostlist *)NULL;
1964 strcpy(dp->dp_dirp, cp);
1966 return (dp->dp_dirp);
1970 * Hang the dir list element off the dirpath binary tree as required
1971 * and update the entry for host.
1974 hang_dirp(struct dirlist *dp, struct grouplist *grp, struct exportlist *ep,
1977 struct hostlist *hp;
1978 struct dirlist *dp2;
1980 if (flags & OP_ALLDIRS) {
1985 if (grp == (struct grouplist *)NULL) {
1986 ep->ex_defdir->dp_flag |= DP_DEFSET;
1987 /* Save the default security flavors list. */
1988 ep->ex_defnumsecflavors = ep->ex_numsecflavors;
1989 if (ep->ex_numsecflavors > 0)
1990 memcpy(ep->ex_defsecflavors, ep->ex_secflavors,
1991 sizeof(ep->ex_secflavors));
1992 } else while (grp) {
1995 hp->ht_next = ep->ex_defdir->dp_hosts;
1996 ep->ex_defdir->dp_hosts = hp;
1997 /* Save the security flavors list for this host set. */
1998 grp->gr_numsecflavors = ep->ex_numsecflavors;
1999 if (ep->ex_numsecflavors > 0)
2000 memcpy(grp->gr_secflavors, ep->ex_secflavors,
2001 sizeof(ep->ex_secflavors));
2007 * Loop through the directories adding them to the tree.
2011 add_dlist(&ep->ex_dirl, dp, grp, flags, ep);
2018 * Traverse the binary tree either updating a node that is already there
2019 * for the new directory or adding the new node.
2022 add_dlist(struct dirlist **dpp, struct dirlist *newdp, struct grouplist *grp,
2023 int flags, struct exportlist *ep)
2026 struct hostlist *hp;
2031 cmp = strcmp(dp->dp_dirp, newdp->dp_dirp);
2033 add_dlist(&dp->dp_left, newdp, grp, flags, ep);
2035 } else if (cmp < 0) {
2036 add_dlist(&dp->dp_right, newdp, grp, flags, ep);
2039 free((caddr_t)newdp);
2042 dp->dp_left = (struct dirlist *)NULL;
2048 * Hang all of the host(s) off of the directory point.
2053 hp->ht_next = dp->dp_hosts;
2055 /* Save the security flavors list for this host set. */
2056 grp->gr_numsecflavors = ep->ex_numsecflavors;
2057 if (ep->ex_numsecflavors > 0)
2058 memcpy(grp->gr_secflavors, ep->ex_secflavors,
2059 sizeof(ep->ex_secflavors));
2063 dp->dp_flag |= DP_DEFSET;
2064 /* Save the default security flavors list. */
2065 ep->ex_defnumsecflavors = ep->ex_numsecflavors;
2066 if (ep->ex_numsecflavors > 0)
2067 memcpy(ep->ex_defsecflavors, ep->ex_secflavors,
2068 sizeof(ep->ex_secflavors));
2073 * Search for a dirpath on the export point.
2076 dirp_search(struct dirlist *dp, char *dirp)
2081 cmp = strcmp(dp->dp_dirp, dirp);
2083 return (dirp_search(dp->dp_left, dirp));
2085 return (dirp_search(dp->dp_right, dirp));
2093 * Scan for a host match in a directory tree.
2096 chk_host(struct dirlist *dp, struct sockaddr *saddr, int *defsetp,
2097 int *hostsetp, int *numsecflavors, int **secflavorsp)
2099 struct hostlist *hp;
2100 struct grouplist *grp;
2101 struct addrinfo *ai;
2104 if (dp->dp_flag & DP_DEFSET)
2105 *defsetp = dp->dp_flag;
2109 switch (grp->gr_type) {
2111 ai = grp->gr_ptr.gt_addrinfo;
2112 for (; ai; ai = ai->ai_next) {
2113 if (!sacmp(ai->ai_addr, saddr, NULL)) {
2115 (hp->ht_flag | DP_HOSTSET);
2116 if (numsecflavors != NULL) {
2118 grp->gr_numsecflavors;
2127 if (!sacmp(saddr, (struct sockaddr *)
2128 &grp->gr_ptr.gt_net.nt_net,
2130 &grp->gr_ptr.gt_net.nt_mask)) {
2131 *hostsetp = (hp->ht_flag | DP_HOSTSET);
2132 if (numsecflavors != NULL) {
2134 grp->gr_numsecflavors;
2149 * Scan tree for a host that matches the address.
2152 scan_tree(struct dirlist *dp, struct sockaddr *saddr)
2154 int defset, hostset;
2157 if (scan_tree(dp->dp_left, saddr))
2159 if (chk_host(dp, saddr, &defset, &hostset, NULL, NULL))
2161 if (scan_tree(dp->dp_right, saddr))
2168 * Traverse the dirlist tree and free it up.
2171 free_dir(struct dirlist *dp)
2175 free_dir(dp->dp_left);
2176 free_dir(dp->dp_right);
2177 free_host(dp->dp_hosts);
2183 * Parse a colon separated list of security flavors
2186 parsesec(char *seclist, struct exportlist *ep)
2191 ep->ex_numsecflavors = 0;
2193 cp = strchr(seclist, ':');
2199 if (!strcmp(seclist, "sys"))
2201 else if (!strcmp(seclist, "krb5"))
2202 flavor = RPCSEC_GSS_KRB5;
2203 else if (!strcmp(seclist, "krb5i"))
2204 flavor = RPCSEC_GSS_KRB5I;
2205 else if (!strcmp(seclist, "krb5p"))
2206 flavor = RPCSEC_GSS_KRB5P;
2210 syslog(LOG_ERR, "bad sec flavor: %s", seclist);
2213 if (ep->ex_numsecflavors == MAXSECFLAVORS) {
2216 syslog(LOG_ERR, "too many sec flavors: %s", seclist);
2219 ep->ex_secflavors[ep->ex_numsecflavors] = flavor;
2220 ep->ex_numsecflavors++;
2232 * Parse the option string and update fields.
2233 * Option arguments may either be -<option>=<value> or
2237 do_opt(char **cpp, char **endcpp, struct exportlist *ep, struct grouplist *grp,
2238 int *has_hostp, int *exflagsp, struct xucred *cr)
2240 char *cpoptarg, *cpoptend;
2241 char *cp, *endcp, *cpopt, savedc, savedc2;
2242 int allflag, usedarg;
2250 while (cpopt && *cpopt) {
2253 if ((cpoptend = strchr(cpopt, ','))) {
2255 if ((cpoptarg = strchr(cpopt, '=')))
2258 if ((cpoptarg = strchr(cpopt, '=')))
2262 nextfield(&cp, &endcp);
2264 if (endcp > cp && *cp != '-') {
2272 if (!strcmp(cpopt, "ro") || !strcmp(cpopt, "o")) {
2273 *exflagsp |= MNT_EXRDONLY;
2274 } else if (cpoptarg && (!strcmp(cpopt, "maproot") ||
2275 !(allflag = strcmp(cpopt, "mapall")) ||
2276 !strcmp(cpopt, "root") || !strcmp(cpopt, "r"))) {
2278 parsecred(cpoptarg, cr);
2280 *exflagsp |= MNT_EXPORTANON;
2281 opt_flags |= OP_MAPALL;
2283 opt_flags |= OP_MAPROOT;
2284 } else if (cpoptarg && (!strcmp(cpopt, "mask") ||
2285 !strcmp(cpopt, "m"))) {
2286 if (get_net(cpoptarg, &grp->gr_ptr.gt_net, 1)) {
2287 syslog(LOG_ERR, "bad mask: %s", cpoptarg);
2291 opt_flags |= OP_MASK;
2292 } else if (cpoptarg && (!strcmp(cpopt, "network") ||
2293 !strcmp(cpopt, "n"))) {
2294 if (strchr(cpoptarg, '/') != NULL) {
2296 fprintf(stderr, "setting OP_MASKLEN\n");
2297 opt_flags |= OP_MASKLEN;
2299 if (grp->gr_type != GT_NULL) {
2300 syslog(LOG_ERR, "network/host conflict");
2302 } else if (get_net(cpoptarg, &grp->gr_ptr.gt_net, 0)) {
2303 syslog(LOG_ERR, "bad net: %s", cpoptarg);
2306 grp->gr_type = GT_NET;
2309 opt_flags |= OP_NET;
2310 } else if (!strcmp(cpopt, "alldirs")) {
2311 opt_flags |= OP_ALLDIRS;
2312 } else if (!strcmp(cpopt, "public")) {
2313 *exflagsp |= MNT_EXPUBLIC;
2314 } else if (!strcmp(cpopt, "webnfs")) {
2315 *exflagsp |= (MNT_EXPUBLIC|MNT_EXRDONLY|MNT_EXPORTANON);
2316 opt_flags |= OP_MAPALL;
2317 } else if (cpoptarg && !strcmp(cpopt, "index")) {
2318 ep->ex_indexfile = strdup(cpoptarg);
2319 } else if (!strcmp(cpopt, "quiet")) {
2320 opt_flags |= OP_QUIET;
2321 } else if (cpoptarg && !strcmp(cpopt, "sec")) {
2322 if (parsesec(cpoptarg, ep))
2324 opt_flags |= OP_SEC;
2327 syslog(LOG_ERR, "bad opt %s", cpopt);
2346 * Translate a character string to the corresponding list of network
2347 * addresses for a hostname.
2350 get_host(char *cp, struct grouplist *grp, struct grouplist *tgrp)
2352 struct grouplist *checkgrp;
2353 struct addrinfo *ai, *tai, hints;
2355 char host[NI_MAXHOST];
2357 if (grp->gr_type != GT_NULL) {
2358 syslog(LOG_ERR, "Bad netgroup type for ip host %s", cp);
2361 memset(&hints, 0, sizeof hints);
2362 hints.ai_flags = AI_CANONNAME;
2363 hints.ai_protocol = IPPROTO_UDP;
2364 ecode = getaddrinfo(cp, NULL, &hints, &ai);
2366 syslog(LOG_ERR,"can't get address info for host %s", cp);
2369 grp->gr_ptr.gt_addrinfo = ai;
2370 while (ai != NULL) {
2371 if (ai->ai_canonname == NULL) {
2372 if (getnameinfo(ai->ai_addr, ai->ai_addrlen, host,
2373 sizeof host, NULL, 0, NI_NUMERICHOST) != 0)
2374 strlcpy(host, "?", sizeof(host));
2375 ai->ai_canonname = strdup(host);
2376 ai->ai_flags |= AI_CANONNAME;
2379 fprintf(stderr, "got host %s\n", ai->ai_canonname);
2381 * Sanity check: make sure we don't already have an entry
2382 * for this host in the grouplist.
2384 for (checkgrp = tgrp; checkgrp != NULL;
2385 checkgrp = checkgrp->gr_next) {
2386 if (checkgrp->gr_type != GT_HOST)
2388 for (tai = checkgrp->gr_ptr.gt_addrinfo; tai != NULL;
2389 tai = tai->ai_next) {
2390 if (sacmp(tai->ai_addr, ai->ai_addr, NULL) != 0)
2394 "ignoring duplicate host %s\n",
2396 grp->gr_type = GT_IGNORE;
2402 grp->gr_type = GT_HOST;
2407 * Free up an exports list component
2410 free_exp(struct exportlist *ep)
2413 if (ep->ex_defdir) {
2414 free_host(ep->ex_defdir->dp_hosts);
2415 free((caddr_t)ep->ex_defdir);
2419 if (ep->ex_indexfile)
2420 free(ep->ex_indexfile);
2421 free_dir(ep->ex_dirl);
2429 free_host(struct hostlist *hp)
2431 struct hostlist *hp2;
2443 struct hostlist *hp;
2445 hp = (struct hostlist *)malloc(sizeof (struct hostlist));
2446 if (hp == (struct hostlist *)NULL)
2448 hp->ht_next = (struct hostlist *)NULL;
2454 * Out of memory, fatal
2460 syslog(LOG_ERR, "out of memory");
2465 * Do the nmount() syscall with the update flag to push the export info into
2469 do_mount(struct exportlist *ep, struct grouplist *grp, int exflags,
2470 struct xucred *anoncrp, char *dirp, int dirplen, struct statfs *fsb)
2473 struct addrinfo *ai;
2474 struct export_args ea, *eap;
2482 struct nfsex_args nfsea;
2484 if (run_v4server > 0)
2485 eap = &nfsea.export;
2495 bzero(eap, sizeof (struct export_args));
2496 bzero(errmsg, sizeof(errmsg));
2497 eap->ex_flags = exflags;
2498 eap->ex_anon = *anoncrp;
2499 eap->ex_indexfile = ep->ex_indexfile;
2500 if (grp->gr_type == GT_HOST)
2501 ai = grp->gr_ptr.gt_addrinfo;
2504 eap->ex_numsecflavors = ep->ex_numsecflavors;
2505 for (i = 0; i < eap->ex_numsecflavors; i++)
2506 eap->ex_secflavors[i] = ep->ex_secflavors[i];
2507 if (eap->ex_numsecflavors == 0) {
2508 eap->ex_numsecflavors = 1;
2509 eap->ex_secflavors[0] = AUTH_SYS;
2513 if (v4root_phase == 0) {
2514 build_iovec(&iov, &iovlen, "fstype", NULL, 0);
2515 build_iovec(&iov, &iovlen, "fspath", NULL, 0);
2516 build_iovec(&iov, &iovlen, "from", NULL, 0);
2517 build_iovec(&iov, &iovlen, "update", NULL, 0);
2518 build_iovec(&iov, &iovlen, "export", eap,
2519 sizeof (struct export_args));
2520 build_iovec(&iov, &iovlen, "errmsg", errmsg, sizeof(errmsg));
2524 switch (grp->gr_type) {
2526 if (ai->ai_addr->sa_family == AF_INET6 && have_v6 == 0)
2528 eap->ex_addr = ai->ai_addr;
2529 eap->ex_addrlen = ai->ai_addrlen;
2530 eap->ex_masklen = 0;
2533 if (grp->gr_ptr.gt_net.nt_net.ss_family == AF_INET6 &&
2537 (struct sockaddr *)&grp->gr_ptr.gt_net.nt_net;
2539 ((struct sockaddr *)&grp->gr_ptr.gt_net.nt_net)->sa_len;
2541 (struct sockaddr *)&grp->gr_ptr.gt_net.nt_mask;
2542 eap->ex_masklen = ((struct sockaddr *)&grp->gr_ptr.gt_net.nt_mask)->sa_len;
2545 eap->ex_addr = NULL;
2546 eap->ex_addrlen = 0;
2547 eap->ex_mask = NULL;
2548 eap->ex_masklen = 0;
2555 syslog(LOG_ERR, "bad grouptype");
2563 * For V4:, use the nfssvc() syscall, instead of mount().
2565 if (v4root_phase == 2) {
2566 nfsea.fspec = v4root_dirpath;
2567 if (run_v4server > 0 &&
2568 nfssvc(NFSSVC_V4ROOTEXPORT, (caddr_t)&nfsea) < 0) {
2569 syslog(LOG_ERR, "Exporting V4: failed");
2575 * Maybe I should just use the fsb->f_mntonname path
2576 * instead of looping back up the dirp to the mount
2578 * Also, needs to know how to export all types of local
2579 * exportable filesystems and not just "ufs".
2581 iov[1].iov_base = fsb->f_fstypename; /* "fstype" */
2582 iov[1].iov_len = strlen(fsb->f_fstypename) + 1;
2583 iov[3].iov_base = fsb->f_mntonname; /* "fspath" */
2584 iov[3].iov_len = strlen(fsb->f_mntonname) + 1;
2585 iov[5].iov_base = fsb->f_mntfromname; /* "from" */
2586 iov[5].iov_len = strlen(fsb->f_mntfromname) + 1;
2589 while (nmount(iov, iovlen, fsb->f_flags) < 0) {
2593 cp = dirp + dirplen - 1;
2594 if (opt_flags & OP_QUIET) {
2598 if (errno == EPERM) {
2600 warnx("can't change attributes for %s: %s",
2603 "can't change attributes for %s: %s",
2608 if (opt_flags & OP_ALLDIRS) {
2609 if (errno == EINVAL)
2611 "-alldirs requested but %s is not a filesystem mountpoint",
2615 "could not remount %s: %m",
2620 /* back up over the last component */
2621 while (*cp == '/' && cp > dirp)
2623 while (*(cp - 1) != '/' && cp > dirp)
2627 warnx("mnt unsucc");
2628 syslog(LOG_ERR, "can't export %s %s",
2636 * Check that we're still on the same
2639 if (statfs(dirp, &fsb1) != 0 ||
2640 bcmp(&fsb1.f_fsid, &fsb->f_fsid,
2641 sizeof (fsb1.f_fsid)) != 0) {
2644 "can't export %s %s", dirp,
2653 * For the experimental server:
2654 * If this is the public directory, get the file handle
2655 * and load it into the kernel via the nfssvc() syscall.
2657 if (run_v4server > 0 && (exflags & MNT_EXPUBLIC) != 0) {
2661 if (eap->ex_indexfile != NULL)
2662 public_name = eap->ex_indexfile;
2665 if (getfh(public_name, &fh) < 0)
2667 "Can't get public fh for %s", public_name);
2668 else if (nfssvc(NFSSVC_PUBLICFH, (caddr_t)&fh) < 0)
2670 "Can't set public fh for %s", public_name);
2683 /* free strings allocated by strdup() in getmntopts.c */
2685 free(iov[0].iov_base); /* fstype */
2686 free(iov[2].iov_base); /* fspath */
2687 free(iov[4].iov_base); /* from */
2688 free(iov[6].iov_base); /* update */
2689 free(iov[8].iov_base); /* export */
2690 free(iov[10].iov_base); /* errmsg */
2692 /* free iov, allocated by realloc() */
2699 * Translate a net address.
2701 * If `maskflg' is nonzero, then `cp' is a netmask, not a network address.
2704 get_net(char *cp, struct netmsk *net, int maskflg)
2706 struct netent *np = NULL;
2707 char *name, *p, *prefp;
2708 struct sockaddr_in sin;
2709 struct sockaddr *sa = NULL;
2710 struct addrinfo hints, *ai = NULL;
2711 char netname[NI_MAXHOST];
2715 if ((opt_flags & OP_MASKLEN) && !maskflg) {
2716 p = strchr(cp, '/');
2722 * Check for a numeric address first. We wish to avoid
2723 * possible DNS lookups in getnetbyname().
2725 if (isxdigit(*cp) || *cp == ':') {
2726 memset(&hints, 0, sizeof hints);
2727 /* Ensure the mask and the network have the same family. */
2728 if (maskflg && (opt_flags & OP_NET))
2729 hints.ai_family = net->nt_net.ss_family;
2730 else if (!maskflg && (opt_flags & OP_HAVEMASK))
2731 hints.ai_family = net->nt_mask.ss_family;
2733 hints.ai_family = AF_UNSPEC;
2734 hints.ai_flags = AI_NUMERICHOST;
2735 if (getaddrinfo(cp, NULL, &hints, &ai) == 0)
2737 if (sa != NULL && ai->ai_family == AF_INET) {
2739 * The address in `cp' is really a network address, so
2740 * use inet_network() to re-interpret this correctly.
2741 * e.g. "127.1" means 127.1.0.0, not 127.0.0.1.
2743 bzero(&sin, sizeof sin);
2744 sin.sin_family = AF_INET;
2745 sin.sin_len = sizeof sin;
2746 sin.sin_addr = inet_makeaddr(inet_network(cp), 0);
2748 fprintf(stderr, "get_net: v4 addr %s\n",
2749 inet_ntoa(sin.sin_addr));
2750 sa = (struct sockaddr *)&sin;
2753 if (sa == NULL && (np = getnetbyname(cp)) != NULL) {
2754 bzero(&sin, sizeof sin);
2755 sin.sin_family = AF_INET;
2756 sin.sin_len = sizeof sin;
2757 sin.sin_addr = inet_makeaddr(np->n_net, 0);
2758 sa = (struct sockaddr *)&sin;
2764 /* The specified sockaddr is a mask. */
2765 if (checkmask(sa) != 0)
2767 bcopy(sa, &net->nt_mask, sa->sa_len);
2768 opt_flags |= OP_HAVEMASK;
2770 /* The specified sockaddr is a network address. */
2771 bcopy(sa, &net->nt_net, sa->sa_len);
2773 /* Get a network name for the export list. */
2776 } else if (getnameinfo(sa, sa->sa_len, netname, sizeof netname,
2777 NULL, 0, NI_NUMERICHOST) == 0) {
2782 if ((net->nt_name = strdup(name)) == NULL)
2786 * Extract a mask from either a "/<masklen>" suffix, or
2787 * from the class of an IPv4 address.
2789 if (opt_flags & OP_MASKLEN) {
2790 preflen = strtol(prefp, NULL, 10);
2791 if (preflen < 0L || preflen == LONG_MAX)
2793 bcopy(sa, &net->nt_mask, sa->sa_len);
2794 if (makemask(&net->nt_mask, (int)preflen) != 0)
2796 opt_flags |= OP_HAVEMASK;
2798 } else if (sa->sa_family == AF_INET &&
2799 (opt_flags & OP_MASK) == 0) {
2802 addr = ((struct sockaddr_in *)sa)->sin_addr.s_addr;
2803 if (IN_CLASSA(addr))
2805 else if (IN_CLASSB(addr))
2807 else if (IN_CLASSC(addr))
2809 else if (IN_CLASSD(addr))
2812 preflen = 32; /* XXX */
2814 bcopy(sa, &net->nt_mask, sa->sa_len);
2815 makemask(&net->nt_mask, (int)preflen);
2816 opt_flags |= OP_HAVEMASK;
2831 * Parse out the next white space separated field
2834 nextfield(char **cp, char **endcp)
2839 while (*p == ' ' || *p == '\t')
2841 if (*p == '\n' || *p == '\0')
2845 while (*p != ' ' && *p != '\t' && *p != '\n' && *p != '\0')
2852 * Get an exports file line. Skip over blank lines and handle line
2860 int totlen, cont_line;
2863 * Loop around ignoring blank lines and getting all continuation lines.
2868 if ((p = fgetln(exp_file, &len)) == NULL)
2873 (*cp == ' ' || *cp == '\t' || *cp == '\n' || *cp == '\\')) {
2883 if (linesize < len + totlen + 1) {
2884 linesize = len + totlen + 1;
2885 line = realloc(line, linesize);
2889 memcpy(line + totlen, p, len);
2891 line[totlen] = '\0';
2892 } while (totlen == 0 || cont_line);
2897 * Parse a description of a credential.
2900 parsecred(char *namelist, struct xucred *cr)
2907 gid_t groups[XU_NGROUPS + 1];
2910 cr->cr_version = XUCRED_VERSION;
2912 * Set up the unprivileged user.
2915 cr->cr_groups[0] = -2;
2918 * Get the user's password table entry.
2920 names = strsep_quote(&namelist, " \t\n");
2921 name = strsep(&names, ":");
2922 /* Bug? name could be NULL here */
2923 if (isdigit(*name) || *name == '-')
2924 pw = getpwuid(atoi(name));
2926 pw = getpwnam(name);
2928 * Credentials specified as those of a user.
2930 if (names == NULL) {
2932 syslog(LOG_ERR, "unknown user: %s", name);
2935 cr->cr_uid = pw->pw_uid;
2936 ngroups = XU_NGROUPS + 1;
2937 if (getgrouplist(pw->pw_name, pw->pw_gid, groups, &ngroups))
2938 syslog(LOG_ERR, "too many groups");
2940 * Compress out duplicate.
2942 cr->cr_ngroups = ngroups - 1;
2943 cr->cr_groups[0] = groups[0];
2944 for (cnt = 2; cnt < ngroups; cnt++)
2945 cr->cr_groups[cnt - 1] = groups[cnt];
2949 * Explicit credential specified as a colon separated list:
2953 cr->cr_uid = pw->pw_uid;
2954 else if (isdigit(*name) || *name == '-')
2955 cr->cr_uid = atoi(name);
2957 syslog(LOG_ERR, "unknown user: %s", name);
2961 while (names != NULL && *names != '\0' && cr->cr_ngroups < XU_NGROUPS) {
2962 name = strsep(&names, ":");
2963 if (isdigit(*name) || *name == '-') {
2964 cr->cr_groups[cr->cr_ngroups++] = atoi(name);
2966 if ((gr = getgrnam(name)) == NULL) {
2967 syslog(LOG_ERR, "unknown group: %s", name);
2970 cr->cr_groups[cr->cr_ngroups++] = gr->gr_gid;
2973 if (names != NULL && *names != '\0' && cr->cr_ngroups == XU_NGROUPS)
2974 syslog(LOG_ERR, "too many groups");
2977 #define STRSIZ (MNTNAMLEN+MNTPATHLEN+50)
2979 * Routines that maintain the remote mounttab
2984 struct mountlist *mlp, **mlpp;
2985 char *host, *dirp, *cp;
2989 if ((mlfile = fopen(_PATH_RMOUNTLIST, "r")) == NULL) {
2990 if (errno == ENOENT)
2993 syslog(LOG_ERR, "can't open %s", _PATH_RMOUNTLIST);
2998 while (fgets(str, STRSIZ, mlfile) != NULL) {
3000 host = strsep(&cp, " \t\n");
3001 dirp = strsep(&cp, " \t\n");
3002 if (host == NULL || dirp == NULL)
3004 mlp = (struct mountlist *)malloc(sizeof (*mlp));
3005 if (mlp == (struct mountlist *)NULL)
3007 strncpy(mlp->ml_host, host, MNTNAMLEN);
3008 mlp->ml_host[MNTNAMLEN] = '\0';
3009 strncpy(mlp->ml_dirp, dirp, MNTPATHLEN);
3010 mlp->ml_dirp[MNTPATHLEN] = '\0';
3011 mlp->ml_next = (struct mountlist *)NULL;
3013 mlpp = &mlp->ml_next;
3019 del_mlist(char *hostp, char *dirp)
3021 struct mountlist *mlp, **mlpp;
3022 struct mountlist *mlp2;
3029 if (!strcmp(mlp->ml_host, hostp) &&
3030 (!dirp || !strcmp(mlp->ml_dirp, dirp))) {
3033 *mlpp = mlp = mlp->ml_next;
3034 free((caddr_t)mlp2);
3036 mlpp = &mlp->ml_next;
3041 if ((mlfile = fopen(_PATH_RMOUNTLIST, "w")) == NULL) {
3042 syslog(LOG_ERR,"can't update %s", _PATH_RMOUNTLIST);
3047 fprintf(mlfile, "%s %s\n", mlp->ml_host, mlp->ml_dirp);
3055 add_mlist(char *hostp, char *dirp)
3057 struct mountlist *mlp, **mlpp;
3063 if (!strcmp(mlp->ml_host, hostp) && !strcmp(mlp->ml_dirp, dirp))
3065 mlpp = &mlp->ml_next;
3068 mlp = (struct mountlist *)malloc(sizeof (*mlp));
3069 if (mlp == (struct mountlist *)NULL)
3071 strncpy(mlp->ml_host, hostp, MNTNAMLEN);
3072 mlp->ml_host[MNTNAMLEN] = '\0';
3073 strncpy(mlp->ml_dirp, dirp, MNTPATHLEN);
3074 mlp->ml_dirp[MNTPATHLEN] = '\0';
3075 mlp->ml_next = (struct mountlist *)NULL;
3077 if ((mlfile = fopen(_PATH_RMOUNTLIST, "a")) == NULL) {
3078 syslog(LOG_ERR, "can't update %s", _PATH_RMOUNTLIST);
3081 fprintf(mlfile, "%s %s\n", mlp->ml_host, mlp->ml_dirp);
3086 * Free up a group list.
3089 free_grp(struct grouplist *grp)
3091 if (grp->gr_type == GT_HOST) {
3092 if (grp->gr_ptr.gt_addrinfo != NULL)
3093 freeaddrinfo(grp->gr_ptr.gt_addrinfo);
3094 } else if (grp->gr_type == GT_NET) {
3095 if (grp->gr_ptr.gt_net.nt_name)
3096 free(grp->gr_ptr.gt_net.nt_name);
3103 SYSLOG(int pri, const char *fmt, ...)
3108 vfprintf(stderr, fmt, ap);
3114 * Check options for consistency.
3117 check_options(struct dirlist *dp)
3120 if (v4root_phase == 0 && dp == NULL)
3122 if ((opt_flags & (OP_MAPROOT | OP_MAPALL)) == (OP_MAPROOT | OP_MAPALL)) {
3123 syslog(LOG_ERR, "-mapall and -maproot mutually exclusive");
3126 if ((opt_flags & OP_MASK) && (opt_flags & OP_NET) == 0) {
3127 syslog(LOG_ERR, "-mask requires -network");
3130 if ((opt_flags & OP_NET) && (opt_flags & OP_HAVEMASK) == 0) {
3131 syslog(LOG_ERR, "-network requires mask specification");
3134 if ((opt_flags & OP_MASK) && (opt_flags & OP_MASKLEN)) {
3135 syslog(LOG_ERR, "-mask and /masklen are mutually exclusive");
3138 if (v4root_phase > 0 &&
3140 ~(OP_SEC | OP_MASK | OP_NET | OP_HAVEMASK | OP_MASKLEN)) != 0) {
3141 syslog(LOG_ERR,"only -sec,-net,-mask options allowed on V4:");
3144 if ((opt_flags & OP_ALLDIRS) && dp->dp_left) {
3145 syslog(LOG_ERR, "-alldirs has multiple directories");
3152 * Check an absolute directory path for any symbolic links. Return true
3155 check_dirpath(char *dirp)
3162 while (*cp && ret) {
3165 if (lstat(dirp, &sb) < 0 || !S_ISDIR(sb.st_mode))
3171 if (lstat(dirp, &sb) < 0 || !S_ISDIR(sb.st_mode))
3177 * Make a netmask according to the specified prefix length. The ss_family
3178 * and other non-address fields must be initialised before calling this.
3181 makemask(struct sockaddr_storage *ssp, int bitlen)
3186 if ((p = sa_rawaddr((struct sockaddr *)ssp, &len)) == NULL)
3188 if (bitlen > len * CHAR_BIT)
3191 for (i = 0; i < len; i++) {
3192 bits = (bitlen > CHAR_BIT) ? CHAR_BIT : bitlen;
3193 *p++ = (u_char)~0 << (CHAR_BIT - bits);
3200 * Check that the sockaddr is a valid netmask. Returns 0 if the mask
3201 * is acceptable (i.e. of the form 1...10....0).
3204 checkmask(struct sockaddr *sa)
3209 if ((mask = sa_rawaddr(sa, &len)) == NULL)
3212 for (i = 0; i < len; i++)
3213 if (mask[i] != 0xff)
3216 if (~mask[i] & (u_char)(~mask[i] + 1))
3220 for (; i < len; i++)
3227 * Compare two sockaddrs according to a specified mask. Return zero if
3228 * `sa1' matches `sa2' when filtered by the netmask in `samask'.
3229 * If samask is NULL, perform a full comparison.
3232 sacmp(struct sockaddr *sa1, struct sockaddr *sa2, struct sockaddr *samask)
3234 unsigned char *p1, *p2, *mask;
3237 if (sa1->sa_family != sa2->sa_family ||
3238 (p1 = sa_rawaddr(sa1, &len)) == NULL ||
3239 (p2 = sa_rawaddr(sa2, NULL)) == NULL)
3242 switch (sa1->sa_family) {
3244 if (((struct sockaddr_in6 *)sa1)->sin6_scope_id !=
3245 ((struct sockaddr_in6 *)sa2)->sin6_scope_id)
3250 /* Simple binary comparison if no mask specified. */
3252 return (memcmp(p1, p2, len));
3254 /* Set up the mask, and do a mask-based comparison. */
3255 if (sa1->sa_family != samask->sa_family ||
3256 (mask = sa_rawaddr(samask, NULL)) == NULL)
3259 for (i = 0; i < len; i++)
3260 if ((p1[i] & mask[i]) != (p2[i] & mask[i]))
3266 * Return a pointer to the part of the sockaddr that contains the
3267 * raw address, and set *nbytes to its length in bytes. Returns
3268 * NULL if the address family is unknown.
3271 sa_rawaddr(struct sockaddr *sa, int *nbytes) {
3275 switch (sa->sa_family) {
3277 len = sizeof(((struct sockaddr_in *)sa)->sin_addr);
3278 p = &((struct sockaddr_in *)sa)->sin_addr;
3281 len = sizeof(((struct sockaddr_in6 *)sa)->sin6_addr);
3282 p = &((struct sockaddr_in6 *)sa)->sin6_addr;
3295 huphandler(int sig __unused)
3300 void terminate(int sig __unused)
3302 pidfile_remove(pfh);
3303 rpcb_unset(MOUNTPROG, MOUNTVERS, NULL);
3304 rpcb_unset(MOUNTPROG, MOUNTVERS3, NULL);