2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1989, 1993
5 * The Regents of the University of California. All rights reserved.
7 * This code is derived from software contributed to Berkeley by
8 * Herb Hasler and Rick Macklem at The University of Guelph.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 static const char copyright[] =
37 "@(#) Copyright (c) 1989, 1993\n\
38 The Regents of the University of California. All rights reserved.\n";
43 static char sccsid[] = "@(#)mountd.c 8.15 (Berkeley) 5/1/95";
47 #include <sys/cdefs.h>
48 __FBSDID("$FreeBSD$");
50 #include <sys/param.h>
52 #include <sys/fcntl.h>
53 #include <sys/fnv_hash.h>
54 #include <sys/linker.h>
55 #include <sys/module.h>
56 #include <sys/mount.h>
57 #include <sys/queue.h>
59 #include <sys/sysctl.h>
60 #include <sys/syslog.h>
63 #include <rpc/rpc_com.h>
64 #include <rpc/pmap_clnt.h>
65 #include <rpc/pmap_prot.h>
66 #include <rpcsvc/mount.h>
67 #include <nfs/nfsproto.h>
68 #include <nfs/nfssvc.h>
69 #include <nfsserver/nfs.h>
71 #include <fs/nfs/nfsport.h>
73 #include <arpa/inet.h>
88 #include "pathnames.h"
96 * Structures for keeping the mount list and export list
99 char ml_host[MNTNAMLEN+1];
100 char ml_dirp[MNTPATHLEN+1];
102 SLIST_ENTRY(mountlist) next;
106 struct dirlist *dp_left;
107 struct dirlist *dp_right;
109 struct hostlist *dp_hosts; /* List of hosts this dir exported to */
113 #define DP_DEFSET 0x1
114 #define DP_HOSTSET 0x2
117 * maproot/mapall credentials.
118 * cr_smallgrps can be used for a group list up to SMALLNGROUPS in size.
119 * Larger group lists are malloc'd/free'd.
121 #define SMALLNGROUPS 32
125 gid_t cr_smallgrps[SMALLNGROUPS];
130 struct dirlist *ex_dirl;
131 struct dirlist *ex_defdir;
132 struct grouplist *ex_grphead;
137 struct expcred ex_defanon;
138 uint64_t ex_defexflags;
139 int ex_numsecflavors;
140 int ex_secflavors[MAXSECFLAVORS];
141 int ex_defnumsecflavors;
142 int ex_defsecflavors[MAXSECFLAVORS];
144 SLIST_ENTRY(exportlist) entries;
147 #define EX_LINKED 0x1
149 #define EX_DEFSET 0x4
150 #define EX_PUBLICFH 0x8
152 SLIST_HEAD(exportlisthead, exportlist);
155 struct sockaddr_storage nt_net;
156 struct sockaddr_storage nt_mask;
161 struct addrinfo *gt_addrinfo;
162 struct netmsk gt_net;
167 union grouptypes gr_ptr;
168 struct grouplist *gr_next;
169 struct expcred gr_anon;
172 int gr_numsecflavors;
173 int gr_secflavors[MAXSECFLAVORS];
179 #define GT_DEFAULT 0x3
180 #define GT_IGNORE 0x5
186 int ht_flag; /* Uses DP_xx bits */
187 struct grouplist *ht_grp;
188 struct hostlist *ht_next;
195 int fhr_numsecflavors;
199 #define GETPORT_MAXTRY 20 /* Max tries to get a port # */
202 * How long to delay a reload of exports when there are RPC request(s)
203 * to process, in usec. Must be less than 1second.
205 #define RELOADDELAY 250000
208 static char *add_expdir(struct dirlist **, char *, int);
209 static void add_dlist(struct dirlist **, struct dirlist *,
210 struct grouplist *, int, struct exportlist *,
211 struct expcred *, uint64_t);
212 static void add_mlist(char *, char *);
213 static int check_dirpath(char *);
214 static int check_options(struct dirlist *);
215 static int checkmask(struct sockaddr *sa);
216 static int chk_host(struct dirlist *, struct sockaddr *, int *, int *,
218 static char *strsep_quote(char **stringp, const char *delim);
219 static int create_service(struct netconfig *nconf);
220 static void complete_service(struct netconfig *nconf, char *port_str);
221 static void clearout_service(void);
222 static void del_mlist(char *hostp, char *dirp);
223 static struct dirlist *dirp_search(struct dirlist *, char *);
224 static int do_export_mount(struct exportlist *, struct statfs *);
225 static int do_mount(struct exportlist *, struct grouplist *, uint64_t,
226 struct expcred *, char *, int, struct statfs *, int, int *);
227 static int do_opt(char **, char **, struct exportlist *,
228 struct grouplist *, int *, uint64_t *, struct expcred *);
229 static struct exportlist *ex_search(fsid_t *, struct exportlisthead *);
230 static struct exportlist *get_exp(void);
231 static void free_dir(struct dirlist *);
232 static void free_exp(struct exportlist *);
233 static void free_grp(struct grouplist *);
234 static void free_host(struct hostlist *);
235 static void free_v4rootexp(void);
236 static void get_exportlist_one(int);
237 static void get_exportlist(int);
238 static void insert_exports(struct exportlist *, struct exportlisthead *);
239 static void free_exports(struct exportlisthead *);
240 static void read_exportfile(int);
241 static int compare_nmount_exportlist(struct iovec *, int, char *);
242 static int compare_export(struct exportlist *, struct exportlist *);
243 static int compare_cred(struct expcred *, struct expcred *);
244 static int compare_secflavor(int *, int *, int);
245 static void delete_export(struct iovec *, int, struct statfs *, char *);
246 static int get_host(char *, struct grouplist *, struct grouplist *);
247 static struct hostlist *get_ht(void);
248 static int get_line(void);
249 static void get_mountlist(void);
250 static int get_net(char *, struct netmsk *, int);
251 static void getexp_err(struct exportlist *, struct grouplist *, const char *);
252 static struct grouplist *get_grp(void);
253 static void hang_dirp(struct dirlist *, struct grouplist *,
254 struct exportlist *, int, struct expcred *, uint64_t);
255 static void huphandler(int sig);
256 static int makemask(struct sockaddr_storage *ssp, int bitlen);
257 static void mntsrv(struct svc_req *, SVCXPRT *);
258 static void nextfield(char **, char **);
259 static void out_of_mem(void);
260 static void parsecred(char *, struct expcred *);
261 static int parsesec(char *, struct exportlist *);
262 static int put_exlist(struct dirlist *, XDR *, struct dirlist *,
264 static void *sa_rawaddr(struct sockaddr *sa, int *nbytes);
265 static int sacmp(struct sockaddr *sa1, struct sockaddr *sa2,
266 struct sockaddr *samask);
267 static int scan_tree(struct dirlist *, struct sockaddr *);
268 static void usage(void);
269 static int xdr_dir(XDR *, char *);
270 static int xdr_explist(XDR *, caddr_t);
271 static int xdr_explist_brief(XDR *, caddr_t);
272 static int xdr_explist_common(XDR *, caddr_t, int);
273 static int xdr_fhs(XDR *, caddr_t);
274 static int xdr_mlist(XDR *, caddr_t);
275 static void terminate(int);
276 static void cp_cred(struct expcred *, struct expcred *);
278 #define EXPHASH(f) (fnv_32_buf((f), sizeof(fsid_t), 0) % exphashsize)
279 static struct exportlisthead *exphead = NULL;
280 static struct exportlisthead *oldexphead = NULL;
281 static int exphashsize = 0;
282 static SLIST_HEAD(, mountlist) mlhead = SLIST_HEAD_INITIALIZER(&mlhead);
283 static char *exnames_default[2] = { _PATH_EXPORTS, NULL };
284 static char **exnames;
285 static char **hosts = NULL;
286 static int force_v2 = 0;
287 static int resvport_only = 1;
288 static int nhosts = 0;
289 static int dir_only = 1;
290 static int dolog = 0;
291 static int got_sighup = 0;
292 static int xcreated = 0;
294 static char *svcport_str = NULL;
295 static int mallocd_svcport = 0;
297 static int sock_fdcnt;
298 static int sock_fdpos;
299 static int suspend_nfsd = 0;
301 static int opt_flags;
302 static int have_v6 = 1;
304 static int v4root_phase = 0;
305 static char v4root_dirpath[PATH_MAX + 1];
306 static struct exportlist *v4root_ep = NULL;
307 static int has_publicfh = 0;
308 static int has_set_publicfh = 0;
310 static struct pidfh *pfh = NULL;
311 /* Bits for opt_flags above */
312 #define OP_MAPROOT 0x01
313 #define OP_MAPALL 0x02
317 #define OP_ALLDIRS 0x40
318 #define OP_HAVEMASK 0x80 /* A mask was specified or inferred. */
319 #define OP_QUIET 0x100
320 #define OP_MASKLEN 0x200
324 static int debug = 1;
325 static void SYSLOG(int, const char *, ...) __printflike(2, 3);
326 #define syslog SYSLOG
328 static int debug = 0;
332 * The LOGDEBUG() syslog() calls are always compiled into the daemon.
333 * To enable them, create a file at _PATH_MOUNTDDEBUG. This file can be empty.
334 * To disable the logging, just delete the file at _PATH_MOUNTDDEBUG.
336 static int logdebug = 0;
337 #define LOGDEBUG(format, ...) \
338 (logdebug ? syslog(LOG_DEBUG, format, ## __VA_ARGS__) : 0)
341 * Similar to strsep(), but it allows for quoted strings
342 * and escaped characters.
344 * It returns the string (or NULL, if *stringp is NULL),
345 * which is a de-quoted version of the string if necessary.
347 * It modifies *stringp in place.
350 strsep_quote(char **stringp, const char *delim)
352 char *srcptr, *dstptr, *retval;
355 if (stringp == NULL || *stringp == NULL)
358 srcptr = dstptr = retval = *stringp;
362 * We're looking for several edge cases here.
363 * First: if we're in quote state (quot != 0),
364 * then we ignore the delim characters, but otherwise
365 * process as normal, unless it is the quote character.
366 * Second: if the current character is a backslash,
367 * we take the next character as-is, without checking
368 * for delim, quote, or backslash. Exception: if the
369 * next character is a NUL, that's the end of the string.
370 * Third: if the character is a quote character, we toggle
372 * Otherwise: check the current character for NUL, or
373 * being in delim, and end the string if either is true.
375 if (*srcptr == '\\') {
378 * The edge case here is if the next character
379 * is NUL, we want to stop processing. But if
380 * it's not NUL, then we simply want to copy it.
383 *dstptr++ = *srcptr++;
387 if (quot == 0 && (*srcptr == '\'' || *srcptr == '"')) {
391 if (quot && *srcptr == quot) {
392 /* End of the quoted part */
397 if (!quot && strchr(delim, *srcptr))
399 *dstptr++ = *srcptr++;
402 *stringp = (*srcptr == '\0') ? NULL : srcptr + 1;
403 *dstptr = 0; /* Terminate the string */
408 * Mountd server for NFS mount protocol as described in:
409 * NFS: Network File System Protocol Specification, RFC1094, Appendix A
410 * The optional arguments are the exports file name
411 * default: _PATH_EXPORTS
412 * and "-n" to allow nonroot mount.
415 main(int argc, char **argv)
418 struct netconfig *nconf;
419 char *endptr, **hosts_bak;
424 int maxrec = RPC_MAXDATASIZE;
425 int attempt_cnt, port_len, port_pos, ret;
427 uint64_t curtime, nexttime;
430 sigset_t sighup_mask;
432 /* Check that another mountd isn't already running. */
433 pfh = pidfile_open(_PATH_MOUNTDPID, 0600, &otherpid);
436 errx(1, "mountd already running, pid: %d.", otherpid);
437 warn("cannot open or create pidfile");
440 s = socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP);
446 while ((c = getopt(argc, argv, "2deh:lnp:rS")) != -1)
452 /* now a no-op, since this is the default */
461 debug = debug ? 0 : 1;
468 svcport = (in_port_t)strtoul(optarg, &endptr, 10);
469 if (endptr == NULL || *endptr != '\0' ||
470 svcport == 0 || svcport >= IPPORT_MAX)
472 svcport_str = strdup(optarg);
477 hosts_bak = realloc(hosts, nhosts * sizeof(char *));
478 if (hosts_bak == NULL) {
480 for (k = 0; k < nhosts; k++)
487 hosts[nhosts - 1] = strdup(optarg);
488 if (hosts[nhosts - 1] == NULL) {
489 for (k = 0; k < (nhosts - 1); k++)
502 if (modfind("nfsd") < 0) {
503 /* Not present in kernel, try loading it */
504 if (kldload("nfsd") < 0 || modfind("nfsd") < 0)
505 errx(1, "NFS server is not available");
513 exnames = exnames_default;
514 openlog("mountd", LOG_PID, LOG_DAEMON);
516 warnx("getting export list");
519 warnx("getting mount list");
525 signal(SIGINT, SIG_IGN);
526 signal(SIGQUIT, SIG_IGN);
528 signal(SIGHUP, huphandler);
529 signal(SIGTERM, terminate);
530 signal(SIGPIPE, SIG_IGN);
534 rpcb_unset(MOUNTPROG, MOUNTVERS, NULL);
535 rpcb_unset(MOUNTPROG, MOUNTVERS3, NULL);
536 rpc_control(RPC_SVC_CONNMAXREC_SET, &maxrec);
538 if (!resvport_only) {
539 if (sysctlbyname("vfs.nfsd.nfs_privport", NULL, NULL,
540 &resvport_only, sizeof(resvport_only)) != 0 &&
542 syslog(LOG_ERR, "sysctl: %m");
548 * If no hosts were specified, add a wildcard entry to bind to
549 * INADDR_ANY. Otherwise make sure 127.0.0.1 and ::1 are added to the
553 hosts = malloc(sizeof(char *));
561 hosts_bak = realloc(hosts, (nhosts + 2) *
563 if (hosts_bak == NULL) {
564 for (k = 0; k < nhosts; k++)
571 hosts[nhosts - 2] = "::1";
573 hosts_bak = realloc(hosts, (nhosts + 1) * sizeof(char *));
574 if (hosts_bak == NULL) {
575 for (k = 0; k < nhosts; k++)
585 hosts[nhosts - 1] = "127.0.0.1";
593 nc_handle = setnetconfig();
594 while ((nconf = getnetconfig(nc_handle))) {
595 if (nconf->nc_flag & NC_VISIBLE) {
596 if (have_v6 == 0 && strcmp(nconf->nc_protofmly,
600 ret = create_service(nconf);
602 /* Ignore this call */
606 * Failed to bind port, so close off
607 * all sockets created and try again
608 * if the port# was dynamically
609 * assigned via bind(2).
612 if (mallocd_svcport != 0 &&
613 attempt_cnt < GETPORT_MAXTRY) {
620 "bindresvport_sa: %m");
624 /* Start over at the first service. */
628 nc_handle = setnetconfig();
630 } else if (mallocd_svcport != 0 &&
631 attempt_cnt == GETPORT_MAXTRY) {
633 * For the last attempt, allow
634 * different port #s for each nconf
635 * by saving the svcport_str and
636 * setting it back to NULL.
638 port_list = realloc(port_list,
639 (port_len + 1) * sizeof(char *));
640 if (port_list == NULL)
642 port_list[port_len++] = svcport_str;
651 * Successfully bound the ports, so call complete_service() to
652 * do the rest of the setup on the service(s).
656 nc_handle = setnetconfig();
657 while ((nconf = getnetconfig(nc_handle))) {
658 if (nconf->nc_flag & NC_VISIBLE) {
659 if (have_v6 == 0 && strcmp(nconf->nc_protofmly,
662 } else if (port_list != NULL) {
663 if (port_pos >= port_len) {
664 syslog(LOG_ERR, "too many port#s");
667 complete_service(nconf, port_list[port_pos++]);
669 complete_service(nconf, svcport_str);
672 endnetconfig(nc_handle);
674 if (port_list != NULL) {
675 for (port_pos = 0; port_pos < port_len; port_pos++)
676 free(port_list[port_pos]);
681 syslog(LOG_ERR, "could not create any services");
685 /* Expand svc_run() here so that we can call get_exportlist(). */
686 curtime = nexttime = 0;
687 sigemptyset(&sighup_mask);
688 sigaddset(&sighup_mask, SIGHUP);
690 clock_gettime(CLOCK_MONOTONIC, &tp);
692 curtime = curtime * 1000000 + tp.tv_nsec / 1000;
693 sigprocmask(SIG_BLOCK, &sighup_mask, NULL);
694 if (got_sighup && curtime >= nexttime) {
696 sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
698 clock_gettime(CLOCK_MONOTONIC, &tp);
699 nexttime = tp.tv_sec;
700 nexttime = nexttime * 1000000 + tp.tv_nsec / 1000 +
703 sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
706 * If a reload is pending, poll for received request(s),
707 * otherwise set a RELOADDELAY timeout, since a SIGHUP
708 * could be processed between the got_sighup test and
709 * the select() system call.
715 tv.tv_usec = RELOADDELAY;
717 switch (select(svc_maxfd + 1, &readfds, NULL, NULL, &tv)) {
719 if (errno == EINTR) {
720 /* Allow a reload now. */
724 syslog(LOG_ERR, "mountd died: select: %m");
727 /* Allow a reload now. */
731 svc_getreqset(&readfds);
737 * This routine creates and binds sockets on the appropriate
738 * addresses. It gets called one time for each transport.
739 * It returns 0 upon success, 1 for ingore the call and -1 to indicate
740 * bind failed with EADDRINUSE.
741 * Any file descriptors that have been created are stored in sock_fd and
742 * the total count of them is maintained in sock_fdcnt.
745 create_service(struct netconfig *nconf)
747 struct addrinfo hints, *res = NULL;
748 struct sockaddr_in *sin;
749 struct sockaddr_in6 *sin6;
750 struct __rpc_sockinfo si;
756 u_int32_t host_addr[4]; /* IPv4 or IPv6 */
759 if ((nconf->nc_semantics != NC_TPI_CLTS) &&
760 (nconf->nc_semantics != NC_TPI_COTS) &&
761 (nconf->nc_semantics != NC_TPI_COTS_ORD))
762 return (1); /* not my type */
765 * XXX - using RPC library internal functions.
767 if (!__rpc_nconf2sockinfo(nconf, &si)) {
768 syslog(LOG_ERR, "cannot get information for %s",
773 /* Get mountd's address on this transport */
774 memset(&hints, 0, sizeof hints);
775 hints.ai_family = si.si_af;
776 hints.ai_socktype = si.si_socktype;
777 hints.ai_protocol = si.si_proto;
780 * Bind to specific IPs if asked to
783 while (nhostsbak > 0) {
785 sock_fd = realloc(sock_fd, (sock_fdcnt + 1) * sizeof(int));
788 sock_fd[sock_fdcnt++] = -1; /* Set invalid for now. */
791 hints.ai_flags = AI_PASSIVE;
794 * XXX - using RPC library internal functions.
796 if ((fd = __rpc_nconf2fd(nconf)) < 0) {
798 if (errno == EAFNOSUPPORT &&
799 nconf->nc_semantics != NC_TPI_CLTS)
802 syslog(non_fatal ? LOG_DEBUG : LOG_ERR,
803 "cannot create socket for %s", nconf->nc_netid);
809 switch (hints.ai_family) {
811 if (inet_pton(AF_INET, hosts[nhostsbak],
813 hints.ai_flags |= AI_NUMERICHOST;
816 * Skip if we have an AF_INET6 address.
818 if (inet_pton(AF_INET6, hosts[nhostsbak],
826 if (inet_pton(AF_INET6, hosts[nhostsbak],
828 hints.ai_flags |= AI_NUMERICHOST;
831 * Skip if we have an AF_INET address.
833 if (inet_pton(AF_INET, hosts[nhostsbak],
841 * We're doing host-based access checks here, so don't
842 * allow v4-in-v6 to confuse things. The kernel will
843 * disable it by default on NFS sockets too.
845 if (setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &one,
848 "can't disable v4-in-v6 on IPv6 socket");
857 * If no hosts were specified, just bind to INADDR_ANY
859 if (strcmp("*", hosts[nhostsbak]) == 0) {
860 if (svcport_str == NULL) {
861 res = malloc(sizeof(struct addrinfo));
865 res->ai_flags = hints.ai_flags;
866 res->ai_family = hints.ai_family;
867 res->ai_protocol = hints.ai_protocol;
868 switch (res->ai_family) {
870 sin = malloc(sizeof(struct sockaddr_in));
873 sin->sin_family = AF_INET;
874 sin->sin_port = htons(0);
875 sin->sin_addr.s_addr = htonl(INADDR_ANY);
876 res->ai_addr = (struct sockaddr*) sin;
877 res->ai_addrlen = (socklen_t)
878 sizeof(struct sockaddr_in);
881 sin6 = malloc(sizeof(struct sockaddr_in6));
884 sin6->sin6_family = AF_INET6;
885 sin6->sin6_port = htons(0);
886 sin6->sin6_addr = in6addr_any;
887 res->ai_addr = (struct sockaddr*) sin6;
888 res->ai_addrlen = (socklen_t)
889 sizeof(struct sockaddr_in6);
892 syslog(LOG_ERR, "bad addr fam %d",
897 if ((aicode = getaddrinfo(NULL, svcport_str,
898 &hints, &res)) != 0) {
900 "cannot get local address for %s: %s",
902 gai_strerror(aicode));
908 if ((aicode = getaddrinfo(hosts[nhostsbak], svcport_str,
909 &hints, &res)) != 0) {
911 "cannot get local address for %s: %s",
912 nconf->nc_netid, gai_strerror(aicode));
919 sock_fd[sock_fdcnt - 1] = fd;
921 /* Now, attempt the bind. */
922 r = bindresvport_sa(fd, res->ai_addr);
924 if (errno == EADDRINUSE && mallocd_svcport != 0) {
925 if (mallocd_res != 0) {
932 syslog(LOG_ERR, "bindresvport_sa: %m");
936 if (svcport_str == NULL) {
937 svcport_str = malloc(NI_MAXSERV * sizeof(char));
938 if (svcport_str == NULL)
942 if (getnameinfo(res->ai_addr,
943 res->ai_addr->sa_len, NULL, NI_MAXHOST,
944 svcport_str, NI_MAXSERV * sizeof(char),
945 NI_NUMERICHOST | NI_NUMERICSERV))
946 errx(1, "Cannot get port number");
948 if (mallocd_res != 0) {
959 * Called after all the create_service() calls have succeeded, to complete
960 * the setup and registration.
963 complete_service(struct netconfig *nconf, char *port_str)
965 struct addrinfo hints, *res = NULL;
966 struct __rpc_sockinfo si;
967 struct netbuf servaddr;
968 SVCXPRT *transp = NULL;
969 int aicode, fd, nhostsbak;
972 if ((nconf->nc_semantics != NC_TPI_CLTS) &&
973 (nconf->nc_semantics != NC_TPI_COTS) &&
974 (nconf->nc_semantics != NC_TPI_COTS_ORD))
975 return; /* not my type */
978 * XXX - using RPC library internal functions.
980 if (!__rpc_nconf2sockinfo(nconf, &si)) {
981 syslog(LOG_ERR, "cannot get information for %s",
987 while (nhostsbak > 0) {
989 if (sock_fdpos >= sock_fdcnt) {
990 /* Should never happen. */
991 syslog(LOG_ERR, "Ran out of socket fd's");
994 fd = sock_fd[sock_fdpos++];
999 * Using -1 tells listen(2) to use
1000 * kern.ipc.soacceptqueue for the backlog.
1002 if (nconf->nc_semantics != NC_TPI_CLTS)
1005 if (nconf->nc_semantics == NC_TPI_CLTS )
1006 transp = svc_dg_create(fd, 0, 0);
1008 transp = svc_vc_create(fd, RPC_MAXDATASIZE,
1011 if (transp != (SVCXPRT *) NULL) {
1012 if (!svc_reg(transp, MOUNTPROG, MOUNTVERS, mntsrv,
1015 "can't register %s MOUNTVERS service",
1018 if (!svc_reg(transp, MOUNTPROG, MOUNTVERS3,
1021 "can't register %s MOUNTVERS3 service",
1025 syslog(LOG_WARNING, "can't create %s services",
1028 if (registered == 0) {
1030 memset(&hints, 0, sizeof hints);
1031 hints.ai_flags = AI_PASSIVE;
1032 hints.ai_family = si.si_af;
1033 hints.ai_socktype = si.si_socktype;
1034 hints.ai_protocol = si.si_proto;
1036 if ((aicode = getaddrinfo(NULL, port_str, &hints,
1038 syslog(LOG_ERR, "cannot get local address: %s",
1039 gai_strerror(aicode));
1043 servaddr.buf = malloc(res->ai_addrlen);
1044 memcpy(servaddr.buf, res->ai_addr, res->ai_addrlen);
1045 servaddr.len = res->ai_addrlen;
1047 rpcb_set(MOUNTPROG, MOUNTVERS, nconf, &servaddr);
1048 rpcb_set(MOUNTPROG, MOUNTVERS3, nconf, &servaddr);
1057 * Clear out sockets after a failure to bind one of them, so that the
1058 * cycle of socket creation/binding can start anew.
1061 clearout_service(void)
1065 for (i = 0; i < sock_fdcnt; i++) {
1066 if (sock_fd[i] >= 0) {
1067 shutdown(sock_fd[i], SHUT_RDWR);
1077 "usage: mountd [-2] [-d] [-e] [-l] [-n] [-p <port>] [-r] "
1078 "[-S] [-h <bindip>] [export_file ...]\n");
1083 * The mount rpc service
1086 mntsrv(struct svc_req *rqstp, SVCXPRT *transp)
1088 struct exportlist *ep;
1090 struct fhreturn fhr;
1093 char host[NI_MAXHOST], numerichost[NI_MAXHOST];
1094 int lookup_failed = 1;
1095 struct sockaddr *saddr;
1097 char rpcpath[MNTPATHLEN + 1], dirpath[MAXPATHLEN];
1098 int defset, hostset;
1100 sigset_t sighup_mask;
1101 int numsecflavors, *secflavorsp;
1103 sigemptyset(&sighup_mask);
1104 sigaddset(&sighup_mask, SIGHUP);
1105 saddr = svc_getrpccaller(transp)->buf;
1106 switch (saddr->sa_family) {
1108 sport = ntohs(((struct sockaddr_in6 *)saddr)->sin6_port);
1111 sport = ntohs(((struct sockaddr_in *)saddr)->sin_port);
1114 syslog(LOG_ERR, "request from unknown address family");
1117 switch (rqstp->rq_proc) {
1119 case MOUNTPROC_UMNT:
1120 case MOUNTPROC_UMNTALL:
1121 lookup_failed = getnameinfo(saddr, saddr->sa_len, host,
1122 sizeof host, NULL, 0, 0);
1124 getnameinfo(saddr, saddr->sa_len, numerichost,
1125 sizeof numerichost, NULL, 0, NI_NUMERICHOST);
1126 switch (rqstp->rq_proc) {
1128 if (!svc_sendreply(transp, (xdrproc_t)xdr_void, NULL))
1129 syslog(LOG_ERR, "can't send reply");
1132 if (sport >= IPPORT_RESERVED && resvport_only) {
1134 "mount request from %s from unprivileged port",
1136 svcerr_weakauth(transp);
1139 if (!svc_getargs(transp, (xdrproc_t)xdr_dir, rpcpath)) {
1140 syslog(LOG_NOTICE, "undecodable mount request from %s",
1142 svcerr_decode(transp);
1147 * Get the real pathname and make sure it is a directory
1148 * or a regular file if the -r option was specified
1151 if (realpath(rpcpath, dirpath) == NULL ||
1152 stat(dirpath, &stb) < 0 ||
1153 statfs(dirpath, &fsb) < 0) {
1154 chdir("/"); /* Just in case realpath doesn't */
1156 "mount request from %s for non existent path %s",
1157 numerichost, dirpath);
1159 warnx("stat failed on %s", dirpath);
1160 bad = ENOENT; /* We will send error reply later */
1163 !S_ISDIR(stb.st_mode) &&
1164 (dir_only || !S_ISREG(stb.st_mode))) {
1166 "mount request from %s for non-directory path %s",
1167 numerichost, dirpath);
1169 warnx("mounting non-directory %s", dirpath);
1170 bad = ENOTDIR; /* We will send error reply later */
1173 /* Check in the exports list */
1174 sigprocmask(SIG_BLOCK, &sighup_mask, NULL);
1178 ep = ex_search(&fsb.f_fsid, exphead);
1179 hostset = defset = 0;
1180 if (ep && (chk_host(ep->ex_defdir, saddr, &defset, &hostset,
1181 &numsecflavors, &secflavorsp) ||
1182 ((dp = dirp_search(ep->ex_dirl, dirpath)) &&
1183 chk_host(dp, saddr, &defset, &hostset, &numsecflavors,
1185 (defset && scan_tree(ep->ex_defdir, saddr) == 0 &&
1186 scan_tree(ep->ex_dirl, saddr) == 0))) {
1188 if (!svc_sendreply(transp, (xdrproc_t)xdr_long,
1190 syslog(LOG_ERR, "can't send reply");
1191 sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
1194 if (hostset & DP_HOSTSET) {
1195 fhr.fhr_flag = hostset;
1196 fhr.fhr_numsecflavors = numsecflavors;
1197 fhr.fhr_secflavors = secflavorsp;
1199 fhr.fhr_flag = defset;
1200 fhr.fhr_numsecflavors = ep->ex_defnumsecflavors;
1201 fhr.fhr_secflavors = ep->ex_defsecflavors;
1203 fhr.fhr_vers = rqstp->rq_vers;
1204 /* Get the file handle */
1205 memset(&fhr.fhr_fh, 0, sizeof(nfsfh_t));
1206 if (getfh(dirpath, (fhandle_t *)&fhr.fhr_fh) < 0) {
1208 syslog(LOG_ERR, "can't get fh for %s", dirpath);
1209 if (!svc_sendreply(transp, (xdrproc_t)xdr_long,
1211 syslog(LOG_ERR, "can't send reply");
1212 sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
1215 if (!svc_sendreply(transp, (xdrproc_t)xdr_fhs,
1217 syslog(LOG_ERR, "can't send reply");
1219 add_mlist(host, dirpath);
1221 add_mlist(numerichost, dirpath);
1223 warnx("mount successful");
1226 "mount request succeeded from %s for %s",
1227 numerichost, dirpath);
1232 "mount request denied from %s for %s",
1233 numerichost, dirpath);
1236 if (bad && !svc_sendreply(transp, (xdrproc_t)xdr_long,
1238 syslog(LOG_ERR, "can't send reply");
1239 sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
1241 case MOUNTPROC_DUMP:
1242 if (!svc_sendreply(transp, (xdrproc_t)xdr_mlist, (caddr_t)NULL))
1243 syslog(LOG_ERR, "can't send reply");
1246 "dump request succeeded from %s",
1249 case MOUNTPROC_UMNT:
1250 if (sport >= IPPORT_RESERVED && resvport_only) {
1252 "umount request from %s from unprivileged port",
1254 svcerr_weakauth(transp);
1257 if (!svc_getargs(transp, (xdrproc_t)xdr_dir, rpcpath)) {
1258 syslog(LOG_NOTICE, "undecodable umount request from %s",
1260 svcerr_decode(transp);
1263 if (realpath(rpcpath, dirpath) == NULL) {
1264 syslog(LOG_NOTICE, "umount request from %s "
1265 "for non existent path %s",
1266 numerichost, dirpath);
1268 if (!svc_sendreply(transp, (xdrproc_t)xdr_void, (caddr_t)NULL))
1269 syslog(LOG_ERR, "can't send reply");
1271 del_mlist(host, dirpath);
1272 del_mlist(numerichost, dirpath);
1275 "umount request succeeded from %s for %s",
1276 numerichost, dirpath);
1278 case MOUNTPROC_UMNTALL:
1279 if (sport >= IPPORT_RESERVED && resvport_only) {
1281 "umountall request from %s from unprivileged port",
1283 svcerr_weakauth(transp);
1286 if (!svc_sendreply(transp, (xdrproc_t)xdr_void, (caddr_t)NULL))
1287 syslog(LOG_ERR, "can't send reply");
1289 del_mlist(host, NULL);
1290 del_mlist(numerichost, NULL);
1293 "umountall request succeeded from %s",
1296 case MOUNTPROC_EXPORT:
1297 if (!svc_sendreply(transp, (xdrproc_t)xdr_explist, (caddr_t)NULL))
1298 if (!svc_sendreply(transp, (xdrproc_t)xdr_explist_brief,
1300 syslog(LOG_ERR, "can't send reply");
1303 "export request succeeded from %s",
1307 svcerr_noproc(transp);
1313 * Xdr conversion for a dirpath string
1316 xdr_dir(XDR *xdrsp, char *dirp)
1318 return (xdr_string(xdrsp, &dirp, MNTPATHLEN));
1322 * Xdr routine to generate file handle reply
1325 xdr_fhs(XDR *xdrsp, caddr_t cp)
1327 struct fhreturn *fhrp = (struct fhreturn *)cp;
1328 u_long ok = 0, len, auth;
1331 if (!xdr_long(xdrsp, &ok))
1333 switch (fhrp->fhr_vers) {
1335 return (xdr_opaque(xdrsp, (caddr_t)&fhrp->fhr_fh, NFSX_V2FH));
1338 if (!xdr_long(xdrsp, &len))
1340 if (!xdr_opaque(xdrsp, (caddr_t)&fhrp->fhr_fh, len))
1342 if (fhrp->fhr_numsecflavors) {
1343 if (!xdr_int(xdrsp, &fhrp->fhr_numsecflavors))
1345 for (i = 0; i < fhrp->fhr_numsecflavors; i++)
1346 if (!xdr_int(xdrsp, &fhrp->fhr_secflavors[i]))
1352 if (!xdr_long(xdrsp, &len))
1354 return (xdr_long(xdrsp, &auth));
1361 xdr_mlist(XDR *xdrsp, caddr_t cp __unused)
1363 struct mountlist *mlp;
1368 SLIST_FOREACH(mlp, &mlhead, next) {
1369 if (!xdr_bool(xdrsp, &true))
1371 strp = &mlp->ml_host[0];
1372 if (!xdr_string(xdrsp, &strp, MNTNAMLEN))
1374 strp = &mlp->ml_dirp[0];
1375 if (!xdr_string(xdrsp, &strp, MNTPATHLEN))
1378 if (!xdr_bool(xdrsp, &false))
1384 * Xdr conversion for export list
1387 xdr_explist_common(XDR *xdrsp, caddr_t cp __unused, int brief)
1389 struct exportlist *ep;
1392 sigset_t sighup_mask;
1395 sigemptyset(&sighup_mask);
1396 sigaddset(&sighup_mask, SIGHUP);
1397 sigprocmask(SIG_BLOCK, &sighup_mask, NULL);
1399 for (i = 0; i < exphashsize; i++)
1400 SLIST_FOREACH(ep, &exphead[i], entries) {
1402 if (put_exlist(ep->ex_dirl, xdrsp, ep->ex_defdir,
1405 if (ep->ex_defdir && putdef == 0 &&
1406 put_exlist(ep->ex_defdir, xdrsp, NULL,
1410 sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
1411 if (!xdr_bool(xdrsp, &false))
1415 sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
1420 * Called from xdr_explist() to traverse the tree and export the
1424 put_exlist(struct dirlist *dp, XDR *xdrsp, struct dirlist *adp, int *putdefp,
1427 struct grouplist *grp;
1428 struct hostlist *hp;
1435 if (put_exlist(dp->dp_left, xdrsp, adp, putdefp, brief))
1437 if (!xdr_bool(xdrsp, &true))
1440 if (!xdr_string(xdrsp, &strp, MNTPATHLEN))
1442 if (adp && !strcmp(dp->dp_dirp, adp->dp_dirp)) {
1447 if (!xdr_bool(xdrsp, &true))
1450 if (!xdr_string(xdrsp, &strp, MNTPATHLEN))
1452 } else if ((dp->dp_flag & DP_DEFSET) == 0 &&
1453 (gotalldir == 0 || (adp->dp_flag & DP_DEFSET) == 0)) {
1457 if (grp->gr_type == GT_HOST) {
1458 if (!xdr_bool(xdrsp, &true))
1460 strp = grp->gr_ptr.gt_addrinfo->ai_canonname;
1461 if (!xdr_string(xdrsp, &strp,
1464 } else if (grp->gr_type == GT_NET) {
1465 if (!xdr_bool(xdrsp, &true))
1467 strp = grp->gr_ptr.gt_net.nt_name;
1468 if (!xdr_string(xdrsp, &strp,
1473 if (gotalldir && hp == (struct hostlist *)NULL) {
1479 if (!xdr_bool(xdrsp, &false))
1481 if (put_exlist(dp->dp_right, xdrsp, adp, putdefp, brief))
1488 xdr_explist(XDR *xdrsp, caddr_t cp)
1491 return xdr_explist_common(xdrsp, cp, 0);
1495 xdr_explist_brief(XDR *xdrsp, caddr_t cp)
1498 return xdr_explist_common(xdrsp, cp, 1);
1502 static size_t linesize;
1503 static FILE *exp_file;
1506 * Get the export list from one, currently open file
1509 get_exportlist_one(int passno)
1511 struct exportlist *ep;
1512 struct grouplist *grp, *tgrp, *savgrp;
1513 struct dirlist *dirhead;
1515 struct expcred anon;
1516 char *cp, *endcp, *dirp, *hst, *usr, *dom, savedc;
1517 int len, has_host, got_nondir, dirplen, netgrp;
1521 anon.cr_groups = NULL;
1522 dirhead = (struct dirlist *)NULL;
1523 while (get_line()) {
1525 warnx("got line %s", line);
1527 nextfield(&cp, &endcp);
1535 anon.cr_groups = anon.cr_smallgrps;
1536 anon.cr_uid = UID_NOBODY;
1537 anon.cr_ngroups = 1;
1538 anon.cr_groups[0] = GID_NOGROUP;
1539 exflags = MNT_EXPORTED;
1542 ep = (struct exportlist *)NULL;
1546 * Handle the V4 root dir.
1548 if (*cp == 'V' && *(cp + 1) == '4' && *(cp + 2) == ':') {
1550 * V4: just indicates that it is the v4 root point,
1551 * so skip over that and set v4root_phase.
1553 if (v4root_phase > 0) {
1554 syslog(LOG_ERR, "V4:duplicate line, ignored");
1559 nextfield(&cp, &endcp);
1563 * Create new exports list entry
1566 tgrp = grp = get_grp();
1568 if (len > MNTNAMLEN) {
1569 getexp_err(ep, tgrp, "mountpoint too long");
1573 if (ep == (struct exportlist *)NULL) {
1574 getexp_err(ep, tgrp,
1575 "flag before export path definition");
1579 warnx("doing opt %s", cp);
1581 if (do_opt(&cp, &endcp, ep, grp, &has_host,
1583 getexp_err(ep, tgrp, NULL);
1586 } else if (*cp == '/') {
1589 if (v4root_phase > 1) {
1591 getexp_err(ep, tgrp, "Multiple V4 dirs");
1595 if (check_dirpath(cp) &&
1596 statfs(cp, &fsb) >= 0) {
1597 if ((fsb.f_flags & MNT_AUTOMOUNTED) != 0)
1598 syslog(LOG_ERR, "Warning: exporting of "
1599 "automounted fs %s not supported", cp);
1601 getexp_err(ep, tgrp, "dirs must be first");
1604 if (v4root_phase == 1) {
1606 getexp_err(ep, tgrp, "Multiple V4 dirs");
1609 if (strlen(v4root_dirpath) == 0) {
1610 strlcpy(v4root_dirpath, cp,
1611 sizeof (v4root_dirpath));
1612 } else if (strcmp(v4root_dirpath, cp)
1615 "different V4 dirpath %s", cp);
1616 getexp_err(ep, tgrp, NULL);
1625 if (fsidcmp(&ep->ex_fs, &fsb.f_fsid)
1627 getexp_err(ep, tgrp,
1633 * See if this directory is already
1636 ep = ex_search(&fsb.f_fsid, exphead);
1637 if (ep == (struct exportlist *)NULL) {
1639 ep->ex_fs = fsb.f_fsid;
1640 ep->ex_fsdir = strdup(fsb.f_mntonname);
1641 if (ep->ex_fsdir == NULL)
1645 "making new ep fs=0x%x,0x%x",
1649 warnx("found ep fs=0x%x,0x%x",
1655 * Add dirpath to export mount point.
1657 dirp = add_expdir(&dirhead, cp, len);
1661 getexp_err(ep, tgrp,
1662 "symbolic link in export path or statfs failed");
1670 if (ep == (struct exportlist *)NULL) {
1671 getexp_err(ep, tgrp,
1672 "host(s) before export path definition");
1677 * Get the host or netgroup.
1680 netgrp = getnetgrent(&hst, &usr, &dom);
1683 grp->gr_next = get_grp();
1689 "null hostname in netgroup %s, skipping", cp);
1690 grp->gr_type = GT_IGNORE;
1691 } else if (get_host(hst, grp, tgrp)) {
1693 "bad host %s in netgroup %s, skipping", hst, cp);
1694 grp->gr_type = GT_IGNORE;
1696 } else if (get_host(cp, grp, tgrp)) {
1697 syslog(LOG_ERR, "bad host %s, skipping", cp);
1698 grp->gr_type = GT_IGNORE;
1701 } while (netgrp && getnetgrent(&hst, &usr, &dom));
1706 nextfield(&cp, &endcp);
1709 if (check_options(dirhead)) {
1710 getexp_err(ep, tgrp, NULL);
1714 grp->gr_type = GT_DEFAULT;
1716 warnx("adding a default entry");
1719 * Don't allow a network export coincide with a list of
1720 * host(s) on the same line.
1722 } else if ((opt_flags & OP_NET) && tgrp->gr_next) {
1723 getexp_err(ep, tgrp, "network/host conflict");
1727 * If an export list was specified on this line, make sure
1728 * that we have at least one valid entry, otherwise skip it.
1732 while (grp && grp->gr_type == GT_IGNORE)
1735 getexp_err(ep, tgrp, "no valid entries");
1740 if (v4root_phase == 1) {
1741 getexp_err(ep, tgrp, "V4:root, no dirp, ignored");
1746 * Loop through hosts, pushing the exports into the kernel.
1747 * After loop, tgrp points to the start of the list and
1748 * grp points to the last entry in the list.
1749 * Do not do the do_mount() for passno == 1, since the
1750 * second pass will do it, as required.
1754 grp->gr_exflags = exflags;
1755 cp_cred(&grp->gr_anon, &anon);
1756 if (v4root_phase == 2 && passno == 0)
1757 LOGDEBUG("do_mount v4root");
1758 if (passno == 0 && do_mount(ep, grp, exflags, &anon,
1759 dirp, dirplen, &fsb, ep->ex_numsecflavors,
1760 ep->ex_secflavors)) {
1761 getexp_err(ep, tgrp, NULL);
1764 } while (grp->gr_next && (grp = grp->gr_next));
1767 * For V4: don't enter in mount lists.
1769 if (v4root_phase > 0 && v4root_phase <= 2) {
1771 * These structures are used for the reload,
1772 * so save them for that case. Otherwise, just
1775 if (passno == 1 && ep != NULL) {
1777 while (tgrp != NULL) {
1779 * Save the security flavors and exflags
1780 * for this host set in the groups.
1782 tgrp->gr_numsecflavors =
1783 ep->ex_numsecflavors;
1784 if (ep->ex_numsecflavors > 0)
1785 memcpy(tgrp->gr_secflavors,
1787 sizeof(ep->ex_secflavors));
1788 tgrp = tgrp->gr_next;
1790 if (v4root_ep == NULL) {
1792 ep = NULL; /* Don't free below. */
1794 grp->gr_next = v4root_ep->ex_grphead;
1795 v4root_ep->ex_grphead = savgrp;
1799 while (tgrp != NULL) {
1801 tgrp = tgrp->gr_next;
1808 * Success. Update the data structures.
1811 hang_dirp(dirhead, tgrp, ep, opt_flags, &anon, exflags);
1812 grp->gr_next = ep->ex_grphead;
1813 ep->ex_grphead = tgrp;
1815 hang_dirp(dirhead, (struct grouplist *)NULL, ep,
1816 opt_flags, &anon, exflags);
1819 dirhead = (struct dirlist *)NULL;
1820 if ((ep->ex_flag & EX_LINKED) == 0) {
1821 insert_exports(ep, exphead);
1823 ep->ex_flag |= EX_LINKED;
1829 dirhead = (struct dirlist *)NULL;
1831 if (anon.cr_groups != anon.cr_smallgrps) {
1832 free(anon.cr_groups);
1833 anon.cr_groups = NULL;
1839 * Get the export list from all specified files
1842 get_exportlist(int passno)
1844 struct export_args export;
1846 struct statfs *mntbufp;
1850 struct nfsex_args eargs;
1853 if ((debug_file = fopen(_PATH_MOUNTDDEBUG, "r")) != NULL) {
1858 LOGDEBUG("passno=%d", passno);
1859 v4root_dirpath[0] = '\0';
1863 * Save the current lists as old ones, so that the new lists
1864 * can be compared with the old ones in the 2nd pass.
1866 for (i = 0; i < exphashsize; i++) {
1867 SLIST_FIRST(&oldexphead[i]) = SLIST_FIRST(&exphead[i]);
1868 SLIST_INIT(&exphead[i]);
1871 /* Note that the public fh has not yet been set. */
1872 has_set_publicfh = 0;
1874 /* Read the export file(s) and process them */
1875 read_exportfile(passno);
1878 * Just make the old lists empty.
1879 * exphashsize == 0 for the first call, before oldexphead
1880 * has been initialized-->loop won't be executed.
1882 for (i = 0; i < exphashsize; i++)
1883 SLIST_INIT(&oldexphead[i]);
1886 bzero(&export, sizeof(export));
1887 export.ex_flags = MNT_DELEXPORT;
1890 bzero(errmsg, sizeof(errmsg));
1892 if (suspend_nfsd != 0)
1893 (void)nfssvc(NFSSVC_SUSPENDNFSD, NULL);
1895 * Delete the old V4 root dir.
1897 bzero(&eargs, sizeof (eargs));
1898 eargs.export.ex_flags = MNT_DELEXPORT;
1899 if (nfssvc(NFSSVC_V4ROOTEXPORT | NFSSVC_NEWSTRUCT, (caddr_t)&eargs) < 0 &&
1901 syslog(LOG_ERR, "Can't delete exports for V4:");
1903 build_iovec(&iov, &iovlen, "fstype", NULL, 0);
1904 build_iovec(&iov, &iovlen, "fspath", NULL, 0);
1905 build_iovec(&iov, &iovlen, "from", NULL, 0);
1906 build_iovec(&iov, &iovlen, "update", NULL, 0);
1907 build_iovec(&iov, &iovlen, "export", &export,
1909 build_iovec(&iov, &iovlen, "errmsg", errmsg,
1913 * For passno == 1, compare the old and new lists updating the kernel
1914 * exports for any cases that have changed.
1915 * This call is doing the second pass through the lists.
1916 * If it fails, fall back on the bulk reload.
1918 if (passno == 1 && compare_nmount_exportlist(iov, iovlen, errmsg) ==
1920 LOGDEBUG("compareok");
1921 /* Free up the old lists. */
1922 free_exports(oldexphead);
1924 LOGDEBUG("doing passno=0");
1926 * Clear flag that notes if a public fh has been exported.
1927 * It is set by do_mount() if MNT_EXPUBLIC is set for the entry.
1931 /* exphead == NULL if not yet allocated (first call). */
1932 if (exphead != NULL) {
1934 * First, get rid of the old lists.
1936 free_exports(exphead);
1937 free_exports(oldexphead);
1941 * And delete exports that are in the kernel for all local
1943 * XXX: Should know how to handle all local exportable
1946 num = getmntinfo(&mntbufp, MNT_NOWAIT);
1948 /* Allocate hash tables, for first call. */
1949 if (exphead == NULL) {
1950 /* Target an average linked list length of 10. */
1951 exphashsize = num / 10;
1952 if (exphashsize < 1)
1954 else if (exphashsize > 100000)
1955 exphashsize = 100000;
1956 exphead = malloc(exphashsize * sizeof(*exphead));
1957 oldexphead = malloc(exphashsize * sizeof(*oldexphead));
1958 if (exphead == NULL || oldexphead == NULL)
1959 errx(1, "Can't malloc hash tables");
1961 for (i = 0; i < exphashsize; i++) {
1962 SLIST_INIT(&exphead[i]);
1963 SLIST_INIT(&oldexphead[i]);
1967 for (i = 0; i < num; i++)
1968 delete_export(iov, iovlen, &mntbufp[i], errmsg);
1971 /* Read the export file(s) and process them */
1976 /* Free strings allocated by strdup() in getmntopts.c */
1977 free(iov[0].iov_base); /* fstype */
1978 free(iov[2].iov_base); /* fspath */
1979 free(iov[4].iov_base); /* from */
1980 free(iov[6].iov_base); /* update */
1981 free(iov[8].iov_base); /* export */
1982 free(iov[10].iov_base); /* errmsg */
1984 /* free iov, allocated by realloc() */
1990 * If there was no public fh, clear any previous one set.
1992 if (has_publicfh == 0) {
1993 LOGDEBUG("clear public fh");
1994 (void) nfssvc(NFSSVC_NOPUBLICFH, NULL);
1997 /* Resume the nfsd. If they weren't suspended, this is harmless. */
1998 (void)nfssvc(NFSSVC_RESUMENFSD, NULL);
1999 LOGDEBUG("eo get_exportlist");
2003 * Insert an export entry in the appropriate list.
2006 insert_exports(struct exportlist *ep, struct exportlisthead *exhp)
2010 i = EXPHASH(&ep->ex_fs);
2011 LOGDEBUG("fs=%s hash=%i", ep->ex_fsdir, i);
2012 SLIST_INSERT_HEAD(&exhp[i], ep, entries);
2016 * Free up the exports lists passed in as arguments.
2019 free_exports(struct exportlisthead *exhp)
2021 struct exportlist *ep, *ep2;
2024 for (i = 0; i < exphashsize; i++) {
2025 SLIST_FOREACH_SAFE(ep, &exhp[i], entries, ep2) {
2026 SLIST_REMOVE(&exhp[i], ep, exportlist, entries);
2029 SLIST_INIT(&exhp[i]);
2034 * Read the exports file(s) and call get_exportlist_one() for each line.
2037 read_exportfile(int passno)
2042 * Read in the exports file and build the list, calling
2043 * nmount() as we go along to push the export rules into the kernel.
2046 for (i = 0; exnames[i] != NULL; i++) {
2048 warnx("reading exports from %s", exnames[i]);
2049 if ((exp_file = fopen(exnames[i], "r")) == NULL) {
2050 syslog(LOG_WARNING, "can't open %s", exnames[i]);
2053 get_exportlist_one(passno);
2058 syslog(LOG_ERR, "can't open any exports file");
2064 * Compare the export lists against the old ones and do nmount() operations
2065 * for any cases that have changed. This avoids doing nmount() for entries
2066 * that have not changed.
2067 * Return 0 upon success, 1 otherwise.
2070 compare_nmount_exportlist(struct iovec *iov, int iovlen, char *errmsg)
2072 struct exportlist *ep, *oep;
2073 struct grouplist *grp;
2074 struct statfs fs, ofs;
2078 * Loop through the current list and look for an entry in the old
2080 * If found, check to see if it the same.
2081 * If it is not the same, delete and re-export.
2082 * Then mark it done on the old list.
2085 * Any entries left in the old list after processing must have their
2088 for (i = 0; i < exphashsize; i++)
2089 SLIST_FOREACH(ep, &exphead[i], entries) {
2090 LOGDEBUG("foreach ep=%s", ep->ex_fsdir);
2091 oep = ex_search(&ep->ex_fs, oldexphead);
2094 * Check the mount paths are the same.
2095 * If not, return 1 so that the reload of the
2096 * exports will be done in bulk, the
2099 LOGDEBUG("found old exp");
2100 if (strcmp(ep->ex_fsdir, oep->ex_fsdir) != 0)
2102 LOGDEBUG("same fsdir");
2104 * Test to see if the entry is the same.
2105 * If not the same delete exports and
2108 if (compare_export(ep, oep) != 0) {
2110 * Clear has_publicfh if if was set
2111 * in the old exports, but only if it
2112 * has not been set during processing of
2113 * the exports for this pass, as
2114 * indicated by has_set_publicfh.
2116 if (has_set_publicfh == 0 &&
2117 (oep->ex_flag & EX_PUBLICFH) != 0)
2120 /* Delete and re-export. */
2121 if (statfs(ep->ex_fsdir, &fs) < 0)
2123 delete_export(iov, iovlen, &fs, errmsg);
2124 ret = do_export_mount(ep, &fs);
2128 oep->ex_flag |= EX_DONE;
2131 LOGDEBUG("not found so export");
2132 /* Not found, so do export. */
2133 if (statfs(ep->ex_fsdir, &fs) < 0)
2135 ret = do_export_mount(ep, &fs);
2141 /* Delete exports not done. */
2142 for (i = 0; i < exphashsize; i++)
2143 SLIST_FOREACH(oep, &oldexphead[i], entries) {
2144 if ((oep->ex_flag & EX_DONE) == 0) {
2145 LOGDEBUG("not done delete=%s", oep->ex_fsdir);
2146 if (statfs(oep->ex_fsdir, &ofs) >= 0 &&
2147 fsidcmp(&oep->ex_fs, &ofs.f_fsid) == 0) {
2148 LOGDEBUG("do delete");
2150 * Clear has_publicfh if if was set
2151 * in the old exports, but only if it
2152 * has not been set during processing of
2153 * the exports for this pass, as
2154 * indicated by has_set_publicfh.
2156 if (has_set_publicfh == 0 &&
2157 (oep->ex_flag & EX_PUBLICFH) != 0)
2160 delete_export(iov, iovlen, &ofs,
2166 /* Do the V4 root exports, as required. */
2168 if (v4root_ep != NULL)
2169 grp = v4root_ep->ex_grphead;
2171 while (v4root_ep != NULL && grp != NULL) {
2172 LOGDEBUG("v4root expath=%s", v4root_dirpath);
2173 ret = do_mount(v4root_ep, grp, grp->gr_exflags, &grp->gr_anon,
2174 v4root_dirpath, strlen(v4root_dirpath), &fs,
2175 grp->gr_numsecflavors, grp->gr_secflavors);
2188 * Compare old and current exportlist entries for the fsid and return 0
2189 * if they are the same, 1 otherwise.
2192 compare_export(struct exportlist *ep, struct exportlist *oep)
2194 struct grouplist *grp, *ogrp;
2196 if (strcmp(ep->ex_fsdir, oep->ex_fsdir) != 0)
2198 if ((ep->ex_flag & EX_DEFSET) != (oep->ex_flag & EX_DEFSET))
2200 if ((ep->ex_defdir != NULL && oep->ex_defdir == NULL) ||
2201 (ep->ex_defdir == NULL && oep->ex_defdir != NULL))
2203 if (ep->ex_defdir != NULL && (ep->ex_defdir->dp_flag & DP_DEFSET) !=
2204 (oep->ex_defdir->dp_flag & DP_DEFSET))
2206 if ((ep->ex_flag & EX_DEFSET) != 0 && (ep->ex_defnumsecflavors !=
2207 oep->ex_defnumsecflavors || ep->ex_defexflags !=
2208 oep->ex_defexflags || compare_cred(&ep->ex_defanon,
2209 &oep->ex_defanon) != 0 || compare_secflavor(ep->ex_defsecflavors,
2210 oep->ex_defsecflavors, ep->ex_defnumsecflavors) != 0))
2213 /* Now, check all the groups. */
2214 for (ogrp = oep->ex_grphead; ogrp != NULL; ogrp = ogrp->gr_next)
2216 for (grp = ep->ex_grphead; grp != NULL; grp = grp->gr_next) {
2217 for (ogrp = oep->ex_grphead; ogrp != NULL; ogrp =
2219 if ((ogrp->gr_flag & GR_FND) == 0 &&
2220 grp->gr_numsecflavors == ogrp->gr_numsecflavors &&
2221 grp->gr_exflags == ogrp->gr_exflags &&
2222 compare_cred(&grp->gr_anon, &ogrp->gr_anon) == 0 &&
2223 compare_secflavor(grp->gr_secflavors,
2224 ogrp->gr_secflavors, grp->gr_numsecflavors) == 0)
2227 ogrp->gr_flag |= GR_FND;
2231 for (ogrp = oep->ex_grphead; ogrp != NULL; ogrp = ogrp->gr_next)
2232 if ((ogrp->gr_flag & GR_FND) == 0)
2238 * This algorithm compares two arrays of "n" items. It returns 0 if they are
2239 * the "same" and 1 otherwise. Although suboptimal, it is always safe to
2240 * return 1, which makes compare_nmount_export() reload the exports entry.
2241 * "same" refers to having the same set of values in the two arrays.
2242 * The arrays are in no particular order and duplicates (multiple entries
2243 * in an array with the same value) is allowed.
2244 * The algorithm is inefficient, but the common case of indentical arrays is
2245 * handled first and "n" is normally fairly small.
2246 * Since the two functions need the same algorithm but for arrays of
2247 * different types (gid_t vs int), this is done as a macro.
2249 #define COMPARE_ARRAYS(a1, a2, n) \
2251 int fnd, fndarray[(n)], i, j; \
2252 /* Handle common case of identical arrays. */ \
2253 for (i = 0; i < (n); i++) \
2254 if ((a1)[i] != (a2)[i]) \
2258 for (i = 0; i < (n); i++) \
2260 for (i = 0; i < (n); i++) { \
2262 for (j = 0; j < (n); j++) { \
2263 if ((a1)[i] == (a2)[j]) { \
2271 for (i = 0; i < (n); i++) \
2272 if (fndarray[i] == 0) \
2278 * Compare two struct expcred's. Return 0 if the same and 1 otherwise.
2281 compare_cred(struct expcred *cr0, struct expcred *cr1)
2284 if (cr0->cr_uid != cr1->cr_uid || cr0->cr_ngroups != cr1->cr_ngroups)
2287 COMPARE_ARRAYS(cr0->cr_groups, cr1->cr_groups, cr0->cr_ngroups);
2291 * Compare two lists of security flavors. Return 0 if the same and 1 otherwise.
2294 compare_secflavor(int *sec1, int *sec2, int nsec)
2297 COMPARE_ARRAYS(sec1, sec2, nsec);
2301 * Delete an exports entry.
2304 delete_export(struct iovec *iov, int iovlen, struct statfs *fsp, char *errmsg)
2306 struct xvfsconf vfc;
2308 if (getvfsbyname(fsp->f_fstypename, &vfc) != 0) {
2309 syslog(LOG_ERR, "getvfsbyname() failed for %s",
2315 * We do not need to delete "export" flag from
2316 * filesystems that do not have it set.
2318 if (!(fsp->f_flags & MNT_EXPORTED))
2321 * Do not delete export for network filesystem by
2322 * passing "export" arg to nmount().
2323 * It only makes sense to do this for local filesystems.
2325 if (vfc.vfc_flags & VFCF_NETWORK)
2328 iov[1].iov_base = fsp->f_fstypename;
2329 iov[1].iov_len = strlen(fsp->f_fstypename) + 1;
2330 iov[3].iov_base = fsp->f_mntonname;
2331 iov[3].iov_len = strlen(fsp->f_mntonname) + 1;
2332 iov[5].iov_base = fsp->f_mntfromname;
2333 iov[5].iov_len = strlen(fsp->f_mntfromname) + 1;
2337 * EXDEV is returned when path exists but is not a
2338 * mount point. May happens if raced with unmount.
2340 if (nmount(iov, iovlen, fsp->f_flags) < 0 && errno != ENOENT &&
2341 errno != ENOTSUP && errno != EXDEV) {
2343 "can't delete exports for %s: %m %s",
2344 fsp->f_mntonname, errmsg);
2349 * Allocate an export list element
2351 static struct exportlist *
2354 struct exportlist *ep;
2356 ep = (struct exportlist *)calloc(1, sizeof (struct exportlist));
2357 if (ep == (struct exportlist *)NULL)
2363 * Allocate a group list element
2365 static struct grouplist *
2368 struct grouplist *gp;
2370 gp = (struct grouplist *)calloc(1, sizeof (struct grouplist));
2371 if (gp == (struct grouplist *)NULL)
2377 * Clean up upon an error in get_exportlist().
2380 getexp_err(struct exportlist *ep, struct grouplist *grp, const char *reason)
2382 struct grouplist *tgrp;
2384 if (!(opt_flags & OP_QUIET)) {
2386 syslog(LOG_ERR, "bad exports list line '%s': %s", line,
2389 syslog(LOG_ERR, "bad exports list line '%s'", line);
2391 if (ep && (ep->ex_flag & EX_LINKED) == 0)
2401 * Search the export list for a matching fs.
2403 static struct exportlist *
2404 ex_search(fsid_t *fsid, struct exportlisthead *exhp)
2406 struct exportlist *ep;
2410 SLIST_FOREACH(ep, &exhp[i], entries) {
2411 if (fsidcmp(&ep->ex_fs, fsid) == 0)
2419 * Add a directory path to the list.
2422 add_expdir(struct dirlist **dpp, char *cp, int len)
2426 dp = malloc(sizeof (struct dirlist));
2427 if (dp == (struct dirlist *)NULL)
2430 dp->dp_right = (struct dirlist *)NULL;
2432 dp->dp_hosts = (struct hostlist *)NULL;
2433 dp->dp_dirp = strndup(cp, len);
2434 if (dp->dp_dirp == NULL)
2437 return (dp->dp_dirp);
2441 * Hang the dir list element off the dirpath binary tree as required
2442 * and update the entry for host.
2445 hang_dirp(struct dirlist *dp, struct grouplist *grp, struct exportlist *ep,
2446 int flags, struct expcred *anoncrp, uint64_t exflags)
2448 struct hostlist *hp;
2449 struct dirlist *dp2;
2451 if (flags & OP_ALLDIRS) {
2456 if (grp == (struct grouplist *)NULL) {
2457 ep->ex_flag |= EX_DEFSET;
2458 ep->ex_defdir->dp_flag |= DP_DEFSET;
2459 /* Save the default security flavors list. */
2460 ep->ex_defnumsecflavors = ep->ex_numsecflavors;
2461 if (ep->ex_numsecflavors > 0)
2462 memcpy(ep->ex_defsecflavors, ep->ex_secflavors,
2463 sizeof(ep->ex_secflavors));
2464 cp_cred(&ep->ex_defanon, anoncrp);
2465 ep->ex_defexflags = exflags;
2466 } else while (grp) {
2469 hp->ht_next = ep->ex_defdir->dp_hosts;
2470 ep->ex_defdir->dp_hosts = hp;
2471 /* Save the security flavors list for this host set. */
2472 grp->gr_numsecflavors = ep->ex_numsecflavors;
2473 if (ep->ex_numsecflavors > 0)
2474 memcpy(grp->gr_secflavors, ep->ex_secflavors,
2475 sizeof(ep->ex_secflavors));
2481 * Loop through the directories adding them to the tree.
2485 add_dlist(&ep->ex_dirl, dp, grp, flags, ep, anoncrp,
2493 * Traverse the binary tree either updating a node that is already there
2494 * for the new directory or adding the new node.
2497 add_dlist(struct dirlist **dpp, struct dirlist *newdp, struct grouplist *grp,
2498 int flags, struct exportlist *ep, struct expcred *anoncrp,
2502 struct hostlist *hp;
2507 cmp = strcmp(dp->dp_dirp, newdp->dp_dirp);
2509 add_dlist(&dp->dp_left, newdp, grp, flags, ep, anoncrp,
2512 } else if (cmp < 0) {
2513 add_dlist(&dp->dp_right, newdp, grp, flags, ep, anoncrp,
2517 free((caddr_t)newdp);
2520 dp->dp_left = (struct dirlist *)NULL;
2526 * Hang all of the host(s) off of the directory point.
2531 hp->ht_next = dp->dp_hosts;
2533 /* Save the security flavors list for this host set. */
2534 grp->gr_numsecflavors = ep->ex_numsecflavors;
2535 if (ep->ex_numsecflavors > 0)
2536 memcpy(grp->gr_secflavors, ep->ex_secflavors,
2537 sizeof(ep->ex_secflavors));
2541 ep->ex_flag |= EX_DEFSET;
2542 dp->dp_flag |= DP_DEFSET;
2543 /* Save the default security flavors list. */
2544 ep->ex_defnumsecflavors = ep->ex_numsecflavors;
2545 if (ep->ex_numsecflavors > 0)
2546 memcpy(ep->ex_defsecflavors, ep->ex_secflavors,
2547 sizeof(ep->ex_secflavors));
2548 cp_cred(&ep->ex_defanon, anoncrp);
2549 ep->ex_defexflags = exflags;
2554 * Search for a dirpath on the export point.
2556 static struct dirlist *
2557 dirp_search(struct dirlist *dp, char *dirp)
2562 cmp = strcmp(dp->dp_dirp, dirp);
2564 return (dirp_search(dp->dp_left, dirp));
2566 return (dirp_search(dp->dp_right, dirp));
2574 * Scan for a host match in a directory tree.
2577 chk_host(struct dirlist *dp, struct sockaddr *saddr, int *defsetp,
2578 int *hostsetp, int *numsecflavors, int **secflavorsp)
2580 struct hostlist *hp;
2581 struct grouplist *grp;
2582 struct addrinfo *ai;
2585 if (dp->dp_flag & DP_DEFSET)
2586 *defsetp = dp->dp_flag;
2590 switch (grp->gr_type) {
2592 ai = grp->gr_ptr.gt_addrinfo;
2593 for (; ai; ai = ai->ai_next) {
2594 if (!sacmp(ai->ai_addr, saddr, NULL)) {
2596 (hp->ht_flag | DP_HOSTSET);
2597 if (numsecflavors != NULL) {
2599 grp->gr_numsecflavors;
2608 if (!sacmp(saddr, (struct sockaddr *)
2609 &grp->gr_ptr.gt_net.nt_net,
2611 &grp->gr_ptr.gt_net.nt_mask)) {
2612 *hostsetp = (hp->ht_flag | DP_HOSTSET);
2613 if (numsecflavors != NULL) {
2615 grp->gr_numsecflavors;
2630 * Scan tree for a host that matches the address.
2633 scan_tree(struct dirlist *dp, struct sockaddr *saddr)
2635 int defset, hostset;
2638 if (scan_tree(dp->dp_left, saddr))
2640 if (chk_host(dp, saddr, &defset, &hostset, NULL, NULL))
2642 if (scan_tree(dp->dp_right, saddr))
2649 * Traverse the dirlist tree and free it up.
2652 free_dir(struct dirlist *dp)
2656 free_dir(dp->dp_left);
2657 free_dir(dp->dp_right);
2658 free_host(dp->dp_hosts);
2665 * Parse a colon separated list of security flavors
2668 parsesec(char *seclist, struct exportlist *ep)
2673 ep->ex_numsecflavors = 0;
2675 cp = strchr(seclist, ':');
2681 if (!strcmp(seclist, "sys"))
2683 else if (!strcmp(seclist, "krb5"))
2684 flavor = RPCSEC_GSS_KRB5;
2685 else if (!strcmp(seclist, "krb5i"))
2686 flavor = RPCSEC_GSS_KRB5I;
2687 else if (!strcmp(seclist, "krb5p"))
2688 flavor = RPCSEC_GSS_KRB5P;
2692 syslog(LOG_ERR, "bad sec flavor: %s", seclist);
2695 if (ep->ex_numsecflavors == MAXSECFLAVORS) {
2698 syslog(LOG_ERR, "too many sec flavors: %s", seclist);
2701 ep->ex_secflavors[ep->ex_numsecflavors] = flavor;
2702 ep->ex_numsecflavors++;
2714 * Parse the option string and update fields.
2715 * Option arguments may either be -<option>=<value> or
2719 do_opt(char **cpp, char **endcpp, struct exportlist *ep, struct grouplist *grp,
2720 int *has_hostp, uint64_t *exflagsp, struct expcred *cr)
2722 char *cpoptarg, *cpoptend;
2723 char *cp, *endcp, *cpopt, savedc, savedc2;
2724 int allflag, usedarg;
2732 while (cpopt && *cpopt) {
2735 if ((cpoptend = strchr(cpopt, ','))) {
2737 if ((cpoptarg = strchr(cpopt, '=')))
2740 if ((cpoptarg = strchr(cpopt, '=')))
2744 nextfield(&cp, &endcp);
2746 if (endcp > cp && *cp != '-') {
2754 if (!strcmp(cpopt, "ro") || !strcmp(cpopt, "o")) {
2755 *exflagsp |= MNT_EXRDONLY;
2756 } else if (cpoptarg && (!strcmp(cpopt, "maproot") ||
2757 !(allflag = strcmp(cpopt, "mapall")) ||
2758 !strcmp(cpopt, "root") || !strcmp(cpopt, "r"))) {
2760 parsecred(cpoptarg, cr);
2762 *exflagsp |= MNT_EXPORTANON;
2763 opt_flags |= OP_MAPALL;
2765 opt_flags |= OP_MAPROOT;
2766 } else if (cpoptarg && (!strcmp(cpopt, "mask") ||
2767 !strcmp(cpopt, "m"))) {
2768 if (get_net(cpoptarg, &grp->gr_ptr.gt_net, 1)) {
2769 syslog(LOG_ERR, "bad mask: %s", cpoptarg);
2773 opt_flags |= OP_MASK;
2774 } else if (cpoptarg && (!strcmp(cpopt, "network") ||
2775 !strcmp(cpopt, "n"))) {
2776 if (strchr(cpoptarg, '/') != NULL) {
2778 fprintf(stderr, "setting OP_MASKLEN\n");
2779 opt_flags |= OP_MASKLEN;
2781 if (grp->gr_type != GT_NULL) {
2782 syslog(LOG_ERR, "network/host conflict");
2784 } else if (get_net(cpoptarg, &grp->gr_ptr.gt_net, 0)) {
2785 syslog(LOG_ERR, "bad net: %s", cpoptarg);
2788 grp->gr_type = GT_NET;
2791 opt_flags |= OP_NET;
2792 } else if (!strcmp(cpopt, "alldirs")) {
2793 opt_flags |= OP_ALLDIRS;
2794 } else if (!strcmp(cpopt, "public")) {
2795 *exflagsp |= MNT_EXPUBLIC;
2796 } else if (!strcmp(cpopt, "webnfs")) {
2797 *exflagsp |= (MNT_EXPUBLIC|MNT_EXRDONLY|MNT_EXPORTANON);
2798 opt_flags |= OP_MAPALL;
2799 } else if (cpoptarg && !strcmp(cpopt, "index")) {
2800 ep->ex_indexfile = strdup(cpoptarg);
2801 } else if (!strcmp(cpopt, "quiet")) {
2802 opt_flags |= OP_QUIET;
2803 } else if (cpoptarg && !strcmp(cpopt, "sec")) {
2804 if (parsesec(cpoptarg, ep))
2806 opt_flags |= OP_SEC;
2808 } else if (!strcmp(cpopt, "tls")) {
2809 *exflagsp |= MNT_EXTLS;
2810 } else if (!strcmp(cpopt, "tlscert")) {
2811 *exflagsp |= (MNT_EXTLS | MNT_EXTLSCERT);
2812 } else if (!strcmp(cpopt, "tlscertuser")) {
2813 *exflagsp |= (MNT_EXTLS | MNT_EXTLSCERT |
2816 syslog(LOG_ERR, "bad opt %s", cpopt);
2835 * Translate a character string to the corresponding list of network
2836 * addresses for a hostname.
2839 get_host(char *cp, struct grouplist *grp, struct grouplist *tgrp)
2841 struct grouplist *checkgrp;
2842 struct addrinfo *ai, *tai, hints;
2844 char host[NI_MAXHOST];
2846 if (grp->gr_type != GT_NULL) {
2847 syslog(LOG_ERR, "Bad netgroup type for ip host %s", cp);
2850 memset(&hints, 0, sizeof hints);
2851 hints.ai_flags = AI_CANONNAME;
2852 hints.ai_protocol = IPPROTO_UDP;
2853 ecode = getaddrinfo(cp, NULL, &hints, &ai);
2855 syslog(LOG_ERR,"can't get address info for host %s", cp);
2858 grp->gr_ptr.gt_addrinfo = ai;
2859 while (ai != NULL) {
2860 if (ai->ai_canonname == NULL) {
2861 if (getnameinfo(ai->ai_addr, ai->ai_addrlen, host,
2862 sizeof host, NULL, 0, NI_NUMERICHOST) != 0)
2863 strlcpy(host, "?", sizeof(host));
2864 ai->ai_canonname = strdup(host);
2865 ai->ai_flags |= AI_CANONNAME;
2868 fprintf(stderr, "got host %s\n", ai->ai_canonname);
2870 * Sanity check: make sure we don't already have an entry
2871 * for this host in the grouplist.
2873 for (checkgrp = tgrp; checkgrp != NULL;
2874 checkgrp = checkgrp->gr_next) {
2875 if (checkgrp->gr_type != GT_HOST)
2877 for (tai = checkgrp->gr_ptr.gt_addrinfo; tai != NULL;
2878 tai = tai->ai_next) {
2879 if (sacmp(tai->ai_addr, ai->ai_addr, NULL) != 0)
2883 "ignoring duplicate host %s\n",
2885 grp->gr_type = GT_IGNORE;
2891 grp->gr_type = GT_HOST;
2896 * Free up an exports list component
2899 free_exp(struct exportlist *ep)
2901 struct grouplist *grp, *tgrp;
2903 if (ep->ex_defdir) {
2904 free_host(ep->ex_defdir->dp_hosts);
2905 free((caddr_t)ep->ex_defdir);
2909 if (ep->ex_indexfile)
2910 free(ep->ex_indexfile);
2911 free_dir(ep->ex_dirl);
2912 grp = ep->ex_grphead;
2918 if (ep->ex_defanon.cr_groups != ep->ex_defanon.cr_smallgrps)
2919 free(ep->ex_defanon.cr_groups);
2924 * Free up the v4root exports.
2927 free_v4rootexp(void)
2930 if (v4root_ep != NULL) {
2931 free_exp(v4root_ep);
2940 free_host(struct hostlist *hp)
2942 struct hostlist *hp2;
2951 static struct hostlist *
2954 struct hostlist *hp;
2956 hp = (struct hostlist *)malloc(sizeof (struct hostlist));
2957 if (hp == (struct hostlist *)NULL)
2959 hp->ht_next = (struct hostlist *)NULL;
2965 * Out of memory, fatal
2971 syslog(LOG_ERR, "out of memory");
2976 * Call do_mount() from the struct exportlist, for each case needed.
2979 do_export_mount(struct exportlist *ep, struct statfs *fsp)
2981 struct grouplist *grp, defgrp;
2985 LOGDEBUG("do_export_mount=%s", ep->ex_fsdir);
2986 dirlen = strlen(ep->ex_fsdir);
2987 if ((ep->ex_flag & EX_DEFSET) != 0) {
2988 defgrp.gr_type = GT_DEFAULT;
2989 defgrp.gr_next = NULL;
2990 /* We have an entry for all other hosts/nets. */
2991 LOGDEBUG("ex_defexflags=0x%jx", (uintmax_t)ep->ex_defexflags);
2992 ret = do_mount(ep, &defgrp, ep->ex_defexflags, &ep->ex_defanon,
2993 ep->ex_fsdir, dirlen, fsp, ep->ex_defnumsecflavors,
2994 ep->ex_defsecflavors);
2999 /* Do a mount for each group. */
3000 grp = ep->ex_grphead;
3001 while (grp != NULL) {
3002 LOGDEBUG("do mount gr_type=0x%x gr_exflags=0x%jx",
3003 grp->gr_type, (uintmax_t)grp->gr_exflags);
3004 ret = do_mount(ep, grp, grp->gr_exflags, &grp->gr_anon,
3005 ep->ex_fsdir, dirlen, fsp, grp->gr_numsecflavors,
3006 grp->gr_secflavors);
3015 * Do the nmount() syscall with the update flag to push the export info into
3019 do_mount(struct exportlist *ep, struct grouplist *grp, uint64_t exflags,
3020 struct expcred *anoncrp, char *dirp, int dirplen, struct statfs *fsb,
3021 int numsecflavors, int *secflavors)
3024 struct addrinfo *ai;
3025 struct export_args *eap;
3033 struct nfsex_args nfsea;
3035 eap = &nfsea.export;
3043 bzero(eap, sizeof (struct export_args));
3044 bzero(errmsg, sizeof(errmsg));
3045 eap->ex_flags = exflags;
3046 eap->ex_uid = anoncrp->cr_uid;
3047 eap->ex_ngroups = anoncrp->cr_ngroups;
3048 if (eap->ex_ngroups > 0) {
3049 eap->ex_groups = malloc(eap->ex_ngroups * sizeof(gid_t));
3050 memcpy(eap->ex_groups, anoncrp->cr_groups, eap->ex_ngroups *
3053 LOGDEBUG("do_mount exflags=0x%jx", (uintmax_t)exflags);
3054 eap->ex_indexfile = ep->ex_indexfile;
3055 if (grp->gr_type == GT_HOST)
3056 ai = grp->gr_ptr.gt_addrinfo;
3059 eap->ex_numsecflavors = numsecflavors;
3060 LOGDEBUG("do_mount numsec=%d", numsecflavors);
3061 for (i = 0; i < eap->ex_numsecflavors; i++)
3062 eap->ex_secflavors[i] = secflavors[i];
3063 if (eap->ex_numsecflavors == 0) {
3064 eap->ex_numsecflavors = 1;
3065 eap->ex_secflavors[0] = AUTH_SYS;
3069 if (v4root_phase == 0) {
3070 build_iovec(&iov, &iovlen, "fstype", NULL, 0);
3071 build_iovec(&iov, &iovlen, "fspath", NULL, 0);
3072 build_iovec(&iov, &iovlen, "from", NULL, 0);
3073 build_iovec(&iov, &iovlen, "update", NULL, 0);
3074 build_iovec(&iov, &iovlen, "export", eap,
3075 sizeof (struct export_args));
3076 build_iovec(&iov, &iovlen, "errmsg", errmsg, sizeof(errmsg));
3080 switch (grp->gr_type) {
3082 if (ai->ai_addr->sa_family == AF_INET6 && have_v6 == 0)
3084 eap->ex_addr = ai->ai_addr;
3085 eap->ex_addrlen = ai->ai_addrlen;
3086 eap->ex_masklen = 0;
3089 if (grp->gr_ptr.gt_net.nt_net.ss_family == AF_INET6 &&
3093 (struct sockaddr *)&grp->gr_ptr.gt_net.nt_net;
3095 ((struct sockaddr *)&grp->gr_ptr.gt_net.nt_net)->sa_len;
3097 (struct sockaddr *)&grp->gr_ptr.gt_net.nt_mask;
3098 eap->ex_masklen = ((struct sockaddr *)&grp->gr_ptr.gt_net.nt_mask)->sa_len;
3101 eap->ex_addr = NULL;
3102 eap->ex_addrlen = 0;
3103 eap->ex_mask = NULL;
3104 eap->ex_masklen = 0;
3111 syslog(LOG_ERR, "bad grouptype");
3119 * For V4:, use the nfssvc() syscall, instead of mount().
3121 if (v4root_phase == 2) {
3122 nfsea.fspec = v4root_dirpath;
3123 if (nfssvc(NFSSVC_V4ROOTEXPORT | NFSSVC_NEWSTRUCT,
3124 (caddr_t)&nfsea) < 0) {
3125 syslog(LOG_ERR, "Exporting V4: failed");
3132 * Maybe I should just use the fsb->f_mntonname path
3133 * instead of looping back up the dirp to the mount
3135 * Also, needs to know how to export all types of local
3136 * exportable filesystems and not just "ufs".
3138 iov[1].iov_base = fsb->f_fstypename; /* "fstype" */
3139 iov[1].iov_len = strlen(fsb->f_fstypename) + 1;
3140 iov[3].iov_base = fsb->f_mntonname; /* "fspath" */
3141 iov[3].iov_len = strlen(fsb->f_mntonname) + 1;
3142 iov[5].iov_base = fsb->f_mntfromname; /* "from" */
3143 iov[5].iov_len = strlen(fsb->f_mntfromname) + 1;
3146 while (nmount(iov, iovlen, fsb->f_flags) < 0) {
3150 cp = dirp + dirplen - 1;
3151 if (opt_flags & OP_QUIET) {
3155 if (errno == EPERM) {
3157 warnx("can't change attributes for %s: %s",
3160 "can't change attributes for %s: %s",
3165 if (opt_flags & OP_ALLDIRS) {
3166 if (errno == EINVAL)
3168 "-alldirs requested but %s is not a filesystem mountpoint",
3172 "could not remount %s: %m",
3177 /* back up over the last component */
3178 while (cp > dirp && *cp == '/')
3180 while (cp > dirp && *(cp - 1) != '/')
3184 warnx("mnt unsucc");
3185 syslog(LOG_ERR, "can't export %s %s",
3193 * Check that we're still on the same
3196 if (statfs(dirp, &fsb1) != 0 ||
3197 fsidcmp(&fsb1.f_fsid, &fsb->f_fsid) != 0) {
3200 "can't export %s %s", dirp,
3209 * For the experimental server:
3210 * If this is the public directory, get the file handle
3211 * and load it into the kernel via the nfssvc() syscall.
3213 if ((exflags & MNT_EXPUBLIC) != 0) {
3217 if (eap->ex_indexfile != NULL)
3218 public_name = eap->ex_indexfile;
3221 if (getfh(public_name, &fh) < 0)
3223 "Can't get public fh for %s", public_name);
3224 else if (nfssvc(NFSSVC_PUBLICFH, (caddr_t)&fh) < 0)
3226 "Can't set public fh for %s", public_name);
3229 has_set_publicfh = 1;
3230 ep->ex_flag |= EX_PUBLICFH;
3242 free(eap->ex_groups);
3243 /* free strings allocated by strdup() in getmntopts.c */
3245 free(iov[0].iov_base); /* fstype */
3246 free(iov[2].iov_base); /* fspath */
3247 free(iov[4].iov_base); /* from */
3248 free(iov[6].iov_base); /* update */
3249 free(iov[8].iov_base); /* export */
3250 free(iov[10].iov_base); /* errmsg */
3252 /* free iov, allocated by realloc() */
3259 * Translate a net address.
3261 * If `maskflg' is nonzero, then `cp' is a netmask, not a network address.
3264 get_net(char *cp, struct netmsk *net, int maskflg)
3266 struct netent *np = NULL;
3267 char *name, *p, *prefp;
3268 struct sockaddr_in sin;
3269 struct sockaddr *sa = NULL;
3270 struct addrinfo hints, *ai = NULL;
3271 char netname[NI_MAXHOST];
3275 if ((opt_flags & OP_MASKLEN) && !maskflg) {
3276 p = strchr(cp, '/');
3282 * Check for a numeric address first. We wish to avoid
3283 * possible DNS lookups in getnetbyname().
3285 if (isxdigit(*cp) || *cp == ':') {
3286 memset(&hints, 0, sizeof hints);
3287 /* Ensure the mask and the network have the same family. */
3288 if (maskflg && (opt_flags & OP_NET))
3289 hints.ai_family = net->nt_net.ss_family;
3290 else if (!maskflg && (opt_flags & OP_HAVEMASK))
3291 hints.ai_family = net->nt_mask.ss_family;
3293 hints.ai_family = AF_UNSPEC;
3294 hints.ai_flags = AI_NUMERICHOST;
3295 if (getaddrinfo(cp, NULL, &hints, &ai) == 0)
3297 if (sa != NULL && ai->ai_family == AF_INET) {
3299 * The address in `cp' is really a network address, so
3300 * use inet_network() to re-interpret this correctly.
3301 * e.g. "127.1" means 127.1.0.0, not 127.0.0.1.
3303 bzero(&sin, sizeof sin);
3304 sin.sin_family = AF_INET;
3305 sin.sin_len = sizeof sin;
3306 sin.sin_addr = inet_makeaddr(inet_network(cp), 0);
3308 fprintf(stderr, "get_net: v4 addr %s\n",
3309 inet_ntoa(sin.sin_addr));
3310 sa = (struct sockaddr *)&sin;
3313 if (sa == NULL && (np = getnetbyname(cp)) != NULL) {
3314 bzero(&sin, sizeof sin);
3315 sin.sin_family = AF_INET;
3316 sin.sin_len = sizeof sin;
3317 sin.sin_addr = inet_makeaddr(np->n_net, 0);
3318 sa = (struct sockaddr *)&sin;
3324 /* The specified sockaddr is a mask. */
3325 if (checkmask(sa) != 0)
3327 bcopy(sa, &net->nt_mask, sa->sa_len);
3328 opt_flags |= OP_HAVEMASK;
3330 /* The specified sockaddr is a network address. */
3331 bcopy(sa, &net->nt_net, sa->sa_len);
3333 /* Get a network name for the export list. */
3336 } else if (getnameinfo(sa, sa->sa_len, netname, sizeof netname,
3337 NULL, 0, NI_NUMERICHOST) == 0) {
3342 if ((net->nt_name = strdup(name)) == NULL)
3346 * Extract a mask from either a "/<masklen>" suffix, or
3347 * from the class of an IPv4 address.
3349 if (opt_flags & OP_MASKLEN) {
3350 preflen = strtol(prefp, NULL, 10);
3351 if (preflen < 0L || preflen == LONG_MAX)
3353 bcopy(sa, &net->nt_mask, sa->sa_len);
3354 if (makemask(&net->nt_mask, (int)preflen) != 0)
3356 opt_flags |= OP_HAVEMASK;
3358 } else if (sa->sa_family == AF_INET &&
3359 (opt_flags & OP_MASK) == 0) {
3362 addr = ((struct sockaddr_in *)sa)->sin_addr.s_addr;
3363 if (IN_CLASSA(addr))
3365 else if (IN_CLASSB(addr))
3367 else if (IN_CLASSC(addr))
3369 else if (IN_CLASSD(addr))
3372 preflen = 32; /* XXX */
3374 bcopy(sa, &net->nt_mask, sa->sa_len);
3375 makemask(&net->nt_mask, (int)preflen);
3376 opt_flags |= OP_HAVEMASK;
3391 * Parse out the next white space separated field
3394 nextfield(char **cp, char **endcp)
3400 while (*p == ' ' || *p == '\t')
3403 while (*p != '\0') {
3408 if (*p == '\\' && *(p + 1) != '\0')
3410 else if (*p == '\'' || *p == '"')
3412 else if (*p == ' ' || *p == '\t')
3421 * Get an exports file line. Skip over blank lines and handle line
3429 int totlen, cont_line;
3432 * Loop around ignoring blank lines and getting all continuation lines.
3437 if ((p = fgetln(exp_file, &len)) == NULL)
3442 (*cp == ' ' || *cp == '\t' || *cp == '\n' || *cp == '\\')) {
3452 if (linesize < len + totlen + 1) {
3453 linesize = len + totlen + 1;
3454 line = realloc(line, linesize);
3458 memcpy(line + totlen, p, len);
3460 line[totlen] = '\0';
3461 } while (totlen == 0 || cont_line);
3466 * Parse a description of a credential.
3469 parsecred(char *namelist, struct expcred *cr)
3476 gid_t groups[NGROUPS_MAX + 1];
3480 * Set up the unprivileged user.
3482 cr->cr_groups = cr->cr_smallgrps;
3483 cr->cr_uid = UID_NOBODY;
3484 cr->cr_groups[0] = GID_NOGROUP;
3487 * Get the user's password table entry.
3490 name = strsep_quote(&names, ":");
3491 /* Bug? name could be NULL here */
3492 if (isdigit(*name) || *name == '-')
3493 pw = getpwuid(atoi(name));
3495 pw = getpwnam(name);
3497 * Credentials specified as those of a user.
3499 if (names == NULL) {
3501 syslog(LOG_ERR, "unknown user: %s", name);
3504 cr->cr_uid = pw->pw_uid;
3505 ngroups = NGROUPS_MAX + 1;
3506 if (getgrouplist(pw->pw_name, pw->pw_gid, groups, &ngroups)) {
3507 syslog(LOG_ERR, "too many groups");
3508 ngroups = NGROUPS_MAX + 1;
3512 * Compress out duplicate.
3514 if (ngroups > 1 && groups[0] == groups[1]) {
3519 if (ngroups > NGROUPS_MAX)
3520 ngroups = NGROUPS_MAX;
3521 if (ngroups > SMALLNGROUPS)
3522 cr->cr_groups = malloc(ngroups * sizeof(gid_t));
3523 cr->cr_ngroups = ngroups;
3524 cr->cr_groups[0] = groups[0];
3525 memcpy(&cr->cr_groups[1], &groups[inpos], (ngroups - 1) *
3530 * Explicit credential specified as a colon separated list:
3534 cr->cr_uid = pw->pw_uid;
3535 else if (isdigit(*name) || *name == '-')
3536 cr->cr_uid = atoi(name);
3538 syslog(LOG_ERR, "unknown user: %s", name);
3542 while (names != NULL && *names != '\0' && cr->cr_ngroups < NGROUPS_MAX) {
3543 name = strsep_quote(&names, ":");
3544 if (isdigit(*name) || *name == '-') {
3545 groups[cr->cr_ngroups++] = atoi(name);
3547 if ((gr = getgrnam(name)) == NULL) {
3548 syslog(LOG_ERR, "unknown group: %s", name);
3551 groups[cr->cr_ngroups++] = gr->gr_gid;
3554 if (names != NULL && *names != '\0' && cr->cr_ngroups == NGROUPS_MAX)
3555 syslog(LOG_ERR, "too many groups");
3556 if (cr->cr_ngroups > SMALLNGROUPS)
3557 cr->cr_groups = malloc(cr->cr_ngroups * sizeof(gid_t));
3558 memcpy(cr->cr_groups, groups, cr->cr_ngroups * sizeof(gid_t));
3561 #define STRSIZ (MNTNAMLEN+MNTPATHLEN+50)
3563 * Routines that maintain the remote mounttab
3568 struct mountlist *mlp;
3569 char *host, *dirp, *cp;
3573 if ((mlfile = fopen(_PATH_RMOUNTLIST, "r")) == NULL) {
3574 if (errno == ENOENT)
3577 syslog(LOG_ERR, "can't open %s", _PATH_RMOUNTLIST);
3581 while (fgets(str, STRSIZ, mlfile) != NULL) {
3583 host = strsep(&cp, " \t\n");
3584 dirp = strsep(&cp, " \t\n");
3585 if (host == NULL || dirp == NULL)
3587 mlp = (struct mountlist *)malloc(sizeof (*mlp));
3588 if (mlp == (struct mountlist *)NULL)
3590 strncpy(mlp->ml_host, host, MNTNAMLEN);
3591 mlp->ml_host[MNTNAMLEN] = '\0';
3592 strncpy(mlp->ml_dirp, dirp, MNTPATHLEN);
3593 mlp->ml_dirp[MNTPATHLEN] = '\0';
3595 SLIST_INSERT_HEAD(&mlhead, mlp, next);
3601 del_mlist(char *hostp, char *dirp)
3603 struct mountlist *mlp, *mlp2;
3607 SLIST_FOREACH_SAFE(mlp, &mlhead, next, mlp2) {
3608 if (!strcmp(mlp->ml_host, hostp) &&
3609 (!dirp || !strcmp(mlp->ml_dirp, dirp))) {
3611 SLIST_REMOVE(&mlhead, mlp, mountlist, next);
3616 if ((mlfile = fopen(_PATH_RMOUNTLIST, "w")) == NULL) {
3617 syslog(LOG_ERR,"can't update %s", _PATH_RMOUNTLIST);
3620 SLIST_FOREACH(mlp, &mlhead, next) {
3621 fprintf(mlfile, "%s %s\n", mlp->ml_host, mlp->ml_dirp);
3628 add_mlist(char *hostp, char *dirp)
3630 struct mountlist *mlp;
3633 SLIST_FOREACH(mlp, &mlhead, next) {
3634 if (!strcmp(mlp->ml_host, hostp) && !strcmp(mlp->ml_dirp, dirp))
3638 mlp = (struct mountlist *)malloc(sizeof (*mlp));
3639 if (mlp == (struct mountlist *)NULL)
3641 strncpy(mlp->ml_host, hostp, MNTNAMLEN);
3642 mlp->ml_host[MNTNAMLEN] = '\0';
3643 strncpy(mlp->ml_dirp, dirp, MNTPATHLEN);
3644 mlp->ml_dirp[MNTPATHLEN] = '\0';
3645 SLIST_INSERT_HEAD(&mlhead, mlp, next);
3646 if ((mlfile = fopen(_PATH_RMOUNTLIST, "a")) == NULL) {
3647 syslog(LOG_ERR, "can't update %s", _PATH_RMOUNTLIST);
3650 fprintf(mlfile, "%s %s\n", mlp->ml_host, mlp->ml_dirp);
3655 * Free up a group list.
3658 free_grp(struct grouplist *grp)
3660 if (grp->gr_type == GT_HOST) {
3661 if (grp->gr_ptr.gt_addrinfo != NULL)
3662 freeaddrinfo(grp->gr_ptr.gt_addrinfo);
3663 } else if (grp->gr_type == GT_NET) {
3664 if (grp->gr_ptr.gt_net.nt_name)
3665 free(grp->gr_ptr.gt_net.nt_name);
3667 if (grp->gr_anon.cr_groups != grp->gr_anon.cr_smallgrps)
3668 free(grp->gr_anon.cr_groups);
3674 SYSLOG(int pri, const char *fmt, ...)
3679 vfprintf(stderr, fmt, ap);
3685 * Check options for consistency.
3688 check_options(struct dirlist *dp)
3691 if (v4root_phase == 0 && dp == NULL)
3693 if ((opt_flags & (OP_MAPROOT | OP_MAPALL)) == (OP_MAPROOT | OP_MAPALL)) {
3694 syslog(LOG_ERR, "-mapall and -maproot mutually exclusive");
3697 if ((opt_flags & OP_MASK) && (opt_flags & OP_NET) == 0) {
3698 syslog(LOG_ERR, "-mask requires -network");
3701 if ((opt_flags & OP_NET) && (opt_flags & OP_HAVEMASK) == 0) {
3702 syslog(LOG_ERR, "-network requires mask specification");
3705 if ((opt_flags & OP_MASK) && (opt_flags & OP_MASKLEN)) {
3706 syslog(LOG_ERR, "-mask and /masklen are mutually exclusive");
3709 if (v4root_phase > 0 &&
3711 ~(OP_SEC | OP_MASK | OP_NET | OP_HAVEMASK | OP_MASKLEN)) != 0) {
3712 syslog(LOG_ERR,"only -sec,-net,-mask options allowed on V4:");
3715 if ((opt_flags & OP_ALLDIRS) && dp->dp_left) {
3716 syslog(LOG_ERR, "-alldirs has multiple directories");
3723 * Check an absolute directory path for any symbolic links. Return true
3726 check_dirpath(char *dirp)
3733 while (*cp && ret) {
3736 if (lstat(dirp, &sb) < 0 || !S_ISDIR(sb.st_mode))
3742 if (lstat(dirp, &sb) < 0 || !S_ISDIR(sb.st_mode))
3748 * Make a netmask according to the specified prefix length. The ss_family
3749 * and other non-address fields must be initialised before calling this.
3752 makemask(struct sockaddr_storage *ssp, int bitlen)
3757 if ((p = sa_rawaddr((struct sockaddr *)ssp, &len)) == NULL)
3759 if (bitlen > len * CHAR_BIT)
3762 for (i = 0; i < len; i++) {
3763 bits = MIN(CHAR_BIT, bitlen);
3764 *p++ = (u_char)~0 << (CHAR_BIT - bits);
3771 * Check that the sockaddr is a valid netmask. Returns 0 if the mask
3772 * is acceptable (i.e. of the form 1...10....0).
3775 checkmask(struct sockaddr *sa)
3780 if ((mask = sa_rawaddr(sa, &len)) == NULL)
3783 for (i = 0; i < len; i++)
3784 if (mask[i] != 0xff)
3787 if (~mask[i] & (u_char)(~mask[i] + 1))
3791 for (; i < len; i++)
3798 * Compare two sockaddrs according to a specified mask. Return zero if
3799 * `sa1' matches `sa2' when filtered by the netmask in `samask'.
3800 * If samask is NULL, perform a full comparison.
3803 sacmp(struct sockaddr *sa1, struct sockaddr *sa2, struct sockaddr *samask)
3805 unsigned char *p1, *p2, *mask;
3808 if (sa1->sa_family != sa2->sa_family ||
3809 (p1 = sa_rawaddr(sa1, &len)) == NULL ||
3810 (p2 = sa_rawaddr(sa2, NULL)) == NULL)
3813 switch (sa1->sa_family) {
3815 if (((struct sockaddr_in6 *)sa1)->sin6_scope_id !=
3816 ((struct sockaddr_in6 *)sa2)->sin6_scope_id)
3821 /* Simple binary comparison if no mask specified. */
3823 return (memcmp(p1, p2, len));
3825 /* Set up the mask, and do a mask-based comparison. */
3826 if (sa1->sa_family != samask->sa_family ||
3827 (mask = sa_rawaddr(samask, NULL)) == NULL)
3830 for (i = 0; i < len; i++)
3831 if ((p1[i] & mask[i]) != (p2[i] & mask[i]))
3837 * Return a pointer to the part of the sockaddr that contains the
3838 * raw address, and set *nbytes to its length in bytes. Returns
3839 * NULL if the address family is unknown.
3842 sa_rawaddr(struct sockaddr *sa, int *nbytes) {
3846 switch (sa->sa_family) {
3848 len = sizeof(((struct sockaddr_in *)sa)->sin_addr);
3849 p = &((struct sockaddr_in *)sa)->sin_addr;
3852 len = sizeof(((struct sockaddr_in6 *)sa)->sin6_addr);
3853 p = &((struct sockaddr_in6 *)sa)->sin6_addr;
3866 huphandler(int sig __unused)
3873 terminate(int sig __unused)
3875 pidfile_remove(pfh);
3876 rpcb_unset(MOUNTPROG, MOUNTVERS, NULL);
3877 rpcb_unset(MOUNTPROG, MOUNTVERS3, NULL);
3882 cp_cred(struct expcred *outcr, struct expcred *incr)
3885 outcr->cr_uid = incr->cr_uid;
3886 outcr->cr_ngroups = incr->cr_ngroups;
3887 if (outcr->cr_ngroups > SMALLNGROUPS)
3888 outcr->cr_groups = malloc(outcr->cr_ngroups * sizeof(gid_t));
3890 outcr->cr_groups = outcr->cr_smallgrps;
3891 memcpy(outcr->cr_groups, incr->cr_groups, incr->cr_ngroups *