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>
53 #include <sys/queue.h>
55 #include <sys/sysctl.h>
56 #include <sys/syslog.h>
59 #include <rpc/rpc_com.h>
60 #include <rpc/pmap_clnt.h>
61 #include <rpc/pmap_prot.h>
62 #include <rpcsvc/mount.h>
63 #include <nfs/nfsproto.h>
64 #include <nfs/nfssvc.h>
65 #include <nfsserver/nfs.h>
67 #include <fs/nfs/nfsport.h>
69 #include <arpa/inet.h>
84 #include "pathnames.h"
92 * Structures for keeping the mount list and export list
95 char ml_host[MNTNAMLEN+1];
96 char ml_dirp[MNTPATHLEN+1];
98 SLIST_ENTRY(mountlist) next;
102 struct dirlist *dp_left;
103 struct dirlist *dp_right;
105 struct hostlist *dp_hosts; /* List of hosts this dir exported to */
109 #define DP_DEFSET 0x1
110 #define DP_HOSTSET 0x2
113 struct dirlist *ex_dirl;
114 struct dirlist *ex_defdir;
119 int ex_numsecflavors;
120 int ex_secflavors[MAXSECFLAVORS];
121 int ex_defnumsecflavors;
122 int ex_defsecflavors[MAXSECFLAVORS];
124 SLIST_ENTRY(exportlist) entries;
127 #define EX_LINKED 0x1
130 struct sockaddr_storage nt_net;
131 struct sockaddr_storage nt_mask;
136 struct addrinfo *gt_addrinfo;
137 struct netmsk gt_net;
142 union grouptypes gr_ptr;
143 struct grouplist *gr_next;
144 int gr_numsecflavors;
145 int gr_secflavors[MAXSECFLAVORS];
151 #define GT_DEFAULT 0x3
152 #define GT_IGNORE 0x5
155 int ht_flag; /* Uses DP_xx bits */
156 struct grouplist *ht_grp;
157 struct hostlist *ht_next;
164 int fhr_numsecflavors;
168 #define GETPORT_MAXTRY 20 /* Max tries to get a port # */
171 static char *add_expdir(struct dirlist **, char *, int);
172 static void add_dlist(struct dirlist **, struct dirlist *,
173 struct grouplist *, int, struct exportlist *);
174 static void add_mlist(char *, char *);
175 static int check_dirpath(char *);
176 static int check_options(struct dirlist *);
177 static int checkmask(struct sockaddr *sa);
178 static int chk_host(struct dirlist *, struct sockaddr *, int *, int *,
180 static char *strsep_quote(char **stringp, const char *delim);
181 static int create_service(struct netconfig *nconf);
182 static void complete_service(struct netconfig *nconf, char *port_str);
183 static void clearout_service(void);
184 static void del_mlist(char *hostp, char *dirp);
185 static struct dirlist *dirp_search(struct dirlist *, char *);
186 static int do_mount(struct exportlist *, struct grouplist *, int,
187 struct xucred *, char *, int, struct statfs *);
188 static int do_opt(char **, char **, struct exportlist *,
189 struct grouplist *, int *, int *, struct xucred *);
190 static struct exportlist *ex_search(fsid_t *);
191 static struct exportlist *get_exp(void);
192 static void free_dir(struct dirlist *);
193 static void free_exp(struct exportlist *);
194 static void free_grp(struct grouplist *);
195 static void free_host(struct hostlist *);
196 static void get_exportlist(void);
197 static int get_host(char *, struct grouplist *, struct grouplist *);
198 static struct hostlist *get_ht(void);
199 static int get_line(void);
200 static void get_mountlist(void);
201 static int get_net(char *, struct netmsk *, int);
202 static void getexp_err(struct exportlist *, struct grouplist *, const char *);
203 static struct grouplist *get_grp(void);
204 static void hang_dirp(struct dirlist *, struct grouplist *,
205 struct exportlist *, int);
206 static void huphandler(int sig);
207 static int makemask(struct sockaddr_storage *ssp, int bitlen);
208 static void mntsrv(struct svc_req *, SVCXPRT *);
209 static void nextfield(char **, char **);
210 static void out_of_mem(void);
211 static void parsecred(char *, struct xucred *);
212 static int parsesec(char *, struct exportlist *);
213 static int put_exlist(struct dirlist *, XDR *, struct dirlist *,
215 static void *sa_rawaddr(struct sockaddr *sa, int *nbytes);
216 static int sacmp(struct sockaddr *sa1, struct sockaddr *sa2,
217 struct sockaddr *samask);
218 static int scan_tree(struct dirlist *, struct sockaddr *);
219 static void usage(void);
220 static int xdr_dir(XDR *, char *);
221 static int xdr_explist(XDR *, caddr_t);
222 static int xdr_explist_brief(XDR *, caddr_t);
223 static int xdr_explist_common(XDR *, caddr_t, int);
224 static int xdr_fhs(XDR *, caddr_t);
225 static int xdr_mlist(XDR *, caddr_t);
226 static void terminate(int);
228 static SLIST_HEAD(, exportlist) exphead = SLIST_HEAD_INITIALIZER(exphead);
229 static SLIST_HEAD(, mountlist) mlhead = SLIST_HEAD_INITIALIZER(mlhead);
230 static struct grouplist *grphead;
231 static char *exnames_default[2] = { _PATH_EXPORTS, NULL };
232 static char **exnames;
233 static char **hosts = NULL;
234 static struct xucred def_anon = {
241 static int force_v2 = 0;
242 static int resvport_only = 1;
243 static int nhosts = 0;
244 static int dir_only = 1;
245 static int dolog = 0;
246 static int got_sighup = 0;
247 static int xcreated = 0;
249 static char *svcport_str = NULL;
250 static int mallocd_svcport = 0;
252 static int sock_fdcnt;
253 static int sock_fdpos;
254 static int suspend_nfsd = 0;
256 static int opt_flags;
257 static int have_v6 = 1;
259 static int v4root_phase = 0;
260 static char v4root_dirpath[PATH_MAX + 1];
261 static int has_publicfh = 0;
263 static struct pidfh *pfh = NULL;
264 /* Bits for opt_flags above */
265 #define OP_MAPROOT 0x01
266 #define OP_MAPALL 0x02
270 #define OP_ALLDIRS 0x40
271 #define OP_HAVEMASK 0x80 /* A mask was specified or inferred. */
272 #define OP_QUIET 0x100
273 #define OP_MASKLEN 0x200
277 static int debug = 1;
278 static void SYSLOG(int, const char *, ...) __printflike(2, 3);
279 #define syslog SYSLOG
281 static int debug = 0;
285 * Similar to strsep(), but it allows for quoted strings
286 * and escaped characters.
288 * It returns the string (or NULL, if *stringp is NULL),
289 * which is a de-quoted version of the string if necessary.
291 * It modifies *stringp in place.
294 strsep_quote(char **stringp, const char *delim)
296 char *srcptr, *dstptr, *retval;
299 if (stringp == NULL || *stringp == NULL)
302 srcptr = dstptr = retval = *stringp;
306 * We're looking for several edge cases here.
307 * First: if we're in quote state (quot != 0),
308 * then we ignore the delim characters, but otherwise
309 * process as normal, unless it is the quote character.
310 * Second: if the current character is a backslash,
311 * we take the next character as-is, without checking
312 * for delim, quote, or backslash. Exception: if the
313 * next character is a NUL, that's the end of the string.
314 * Third: if the character is a quote character, we toggle
316 * Otherwise: check the current character for NUL, or
317 * being in delim, and end the string if either is true.
319 if (*srcptr == '\\') {
322 * The edge case here is if the next character
323 * is NUL, we want to stop processing. But if
324 * it's not NUL, then we simply want to copy it.
327 *dstptr++ = *srcptr++;
331 if (quot == 0 && (*srcptr == '\'' || *srcptr == '"')) {
335 if (quot && *srcptr == quot) {
336 /* End of the quoted part */
341 if (!quot && strchr(delim, *srcptr))
343 *dstptr++ = *srcptr++;
346 *dstptr = 0; /* Terminate the string */
347 *stringp = (*srcptr == '\0') ? NULL : srcptr + 1;
352 * Mountd server for NFS mount protocol as described in:
353 * NFS: Network File System Protocol Specification, RFC1094, Appendix A
354 * The optional arguments are the exports file name
355 * default: _PATH_EXPORTS
356 * and "-n" to allow nonroot mount.
359 main(int argc, char **argv)
362 struct netconfig *nconf;
363 char *endptr, **hosts_bak;
368 int maxrec = RPC_MAXDATASIZE;
369 int attempt_cnt, port_len, port_pos, ret;
372 /* Check that another mountd isn't already running. */
373 pfh = pidfile_open(_PATH_MOUNTDPID, 0600, &otherpid);
376 errx(1, "mountd already running, pid: %d.", otherpid);
377 warn("cannot open or create pidfile");
380 s = socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP);
386 while ((c = getopt(argc, argv, "2deh:lnp:rS")) != -1)
392 /* now a no-op, since this is the default */
401 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++)
442 if (modfind("nfsd") < 0) {
443 /* Not present in kernel, try loading it */
444 if (kldload("nfsd") < 0 || modfind("nfsd") < 0)
445 errx(1, "NFS server is not available");
450 grphead = (struct grouplist *)NULL;
454 exnames = exnames_default;
455 openlog("mountd", LOG_PID, LOG_DAEMON);
457 warnx("getting export list");
460 warnx("getting mount list");
466 signal(SIGINT, SIG_IGN);
467 signal(SIGQUIT, SIG_IGN);
469 signal(SIGHUP, huphandler);
470 signal(SIGTERM, terminate);
471 signal(SIGPIPE, SIG_IGN);
475 rpcb_unset(MOUNTPROG, MOUNTVERS, NULL);
476 rpcb_unset(MOUNTPROG, MOUNTVERS3, NULL);
477 rpc_control(RPC_SVC_CONNMAXREC_SET, &maxrec);
479 if (!resvport_only) {
480 if (sysctlbyname("vfs.nfsd.nfs_privport", NULL, NULL,
481 &resvport_only, sizeof(resvport_only)) != 0 &&
483 syslog(LOG_ERR, "sysctl: %m");
489 * If no hosts were specified, add a wildcard entry to bind to
490 * INADDR_ANY. Otherwise make sure 127.0.0.1 and ::1 are added to the
494 hosts = malloc(sizeof(char *));
502 hosts_bak = realloc(hosts, (nhosts + 2) *
504 if (hosts_bak == NULL) {
505 for (k = 0; k < nhosts; k++)
512 hosts[nhosts - 2] = "::1";
514 hosts_bak = realloc(hosts, (nhosts + 1) * sizeof(char *));
515 if (hosts_bak == NULL) {
516 for (k = 0; k < nhosts; k++)
526 hosts[nhosts - 1] = "127.0.0.1";
534 nc_handle = setnetconfig();
535 while ((nconf = getnetconfig(nc_handle))) {
536 if (nconf->nc_flag & NC_VISIBLE) {
537 if (have_v6 == 0 && strcmp(nconf->nc_protofmly,
541 ret = create_service(nconf);
543 /* Ignore this call */
547 * Failed to bind port, so close off
548 * all sockets created and try again
549 * if the port# was dynamically
550 * assigned via bind(2).
553 if (mallocd_svcport != 0 &&
554 attempt_cnt < GETPORT_MAXTRY) {
561 "bindresvport_sa: %m");
565 /* Start over at the first service. */
569 nc_handle = setnetconfig();
571 } else if (mallocd_svcport != 0 &&
572 attempt_cnt == GETPORT_MAXTRY) {
574 * For the last attempt, allow
575 * different port #s for each nconf
576 * by saving the svcport_str and
577 * setting it back to NULL.
579 port_list = realloc(port_list,
580 (port_len + 1) * sizeof(char *));
581 if (port_list == NULL)
583 port_list[port_len++] = svcport_str;
592 * Successfully bound the ports, so call complete_service() to
593 * do the rest of the setup on the service(s).
597 nc_handle = setnetconfig();
598 while ((nconf = getnetconfig(nc_handle))) {
599 if (nconf->nc_flag & NC_VISIBLE) {
600 if (have_v6 == 0 && strcmp(nconf->nc_protofmly,
603 } else if (port_list != NULL) {
604 if (port_pos >= port_len) {
605 syslog(LOG_ERR, "too many port#s");
608 complete_service(nconf, port_list[port_pos++]);
610 complete_service(nconf, svcport_str);
613 endnetconfig(nc_handle);
615 if (port_list != NULL) {
616 for (port_pos = 0; port_pos < port_len; port_pos++)
617 free(port_list[port_pos]);
622 syslog(LOG_ERR, "could not create any services");
626 /* Expand svc_run() here so that we can call get_exportlist(). */
633 switch (select(svc_maxfd + 1, &readfds, NULL, NULL, NULL)) {
637 syslog(LOG_ERR, "mountd died: select: %m");
642 svc_getreqset(&readfds);
648 * This routine creates and binds sockets on the appropriate
649 * addresses. It gets called one time for each transport.
650 * It returns 0 upon success, 1 for ingore the call and -1 to indicate
651 * bind failed with EADDRINUSE.
652 * Any file descriptors that have been created are stored in sock_fd and
653 * the total count of them is maintained in sock_fdcnt.
656 create_service(struct netconfig *nconf)
658 struct addrinfo hints, *res = NULL;
659 struct sockaddr_in *sin;
660 struct sockaddr_in6 *sin6;
661 struct __rpc_sockinfo si;
667 u_int32_t host_addr[4]; /* IPv4 or IPv6 */
670 if ((nconf->nc_semantics != NC_TPI_CLTS) &&
671 (nconf->nc_semantics != NC_TPI_COTS) &&
672 (nconf->nc_semantics != NC_TPI_COTS_ORD))
673 return (1); /* not my type */
676 * XXX - using RPC library internal functions.
678 if (!__rpc_nconf2sockinfo(nconf, &si)) {
679 syslog(LOG_ERR, "cannot get information for %s",
684 /* Get mountd's address on this transport */
685 memset(&hints, 0, sizeof hints);
686 hints.ai_family = si.si_af;
687 hints.ai_socktype = si.si_socktype;
688 hints.ai_protocol = si.si_proto;
691 * Bind to specific IPs if asked to
694 while (nhostsbak > 0) {
696 sock_fd = realloc(sock_fd, (sock_fdcnt + 1) * sizeof(int));
699 sock_fd[sock_fdcnt++] = -1; /* Set invalid for now. */
702 hints.ai_flags = AI_PASSIVE;
705 * XXX - using RPC library internal functions.
707 if ((fd = __rpc_nconf2fd(nconf)) < 0) {
709 if (errno == EAFNOSUPPORT &&
710 nconf->nc_semantics != NC_TPI_CLTS)
713 syslog(non_fatal ? LOG_DEBUG : LOG_ERR,
714 "cannot create socket for %s", nconf->nc_netid);
720 switch (hints.ai_family) {
722 if (inet_pton(AF_INET, hosts[nhostsbak],
724 hints.ai_flags |= AI_NUMERICHOST;
727 * Skip if we have an AF_INET6 address.
729 if (inet_pton(AF_INET6, hosts[nhostsbak],
737 if (inet_pton(AF_INET6, hosts[nhostsbak],
739 hints.ai_flags |= AI_NUMERICHOST;
742 * Skip if we have an AF_INET address.
744 if (inet_pton(AF_INET, hosts[nhostsbak],
752 * We're doing host-based access checks here, so don't
753 * allow v4-in-v6 to confuse things. The kernel will
754 * disable it by default on NFS sockets too.
756 if (setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &one,
759 "can't disable v4-in-v6 on IPv6 socket");
768 * If no hosts were specified, just bind to INADDR_ANY
770 if (strcmp("*", hosts[nhostsbak]) == 0) {
771 if (svcport_str == NULL) {
772 res = malloc(sizeof(struct addrinfo));
776 res->ai_flags = hints.ai_flags;
777 res->ai_family = hints.ai_family;
778 res->ai_protocol = hints.ai_protocol;
779 switch (res->ai_family) {
781 sin = malloc(sizeof(struct sockaddr_in));
784 sin->sin_family = AF_INET;
785 sin->sin_port = htons(0);
786 sin->sin_addr.s_addr = htonl(INADDR_ANY);
787 res->ai_addr = (struct sockaddr*) sin;
788 res->ai_addrlen = (socklen_t)
789 sizeof(struct sockaddr_in);
792 sin6 = malloc(sizeof(struct sockaddr_in6));
795 sin6->sin6_family = AF_INET6;
796 sin6->sin6_port = htons(0);
797 sin6->sin6_addr = in6addr_any;
798 res->ai_addr = (struct sockaddr*) sin6;
799 res->ai_addrlen = (socklen_t)
800 sizeof(struct sockaddr_in6);
803 syslog(LOG_ERR, "bad addr fam %d",
808 if ((aicode = getaddrinfo(NULL, svcport_str,
809 &hints, &res)) != 0) {
811 "cannot get local address for %s: %s",
813 gai_strerror(aicode));
819 if ((aicode = getaddrinfo(hosts[nhostsbak], svcport_str,
820 &hints, &res)) != 0) {
822 "cannot get local address for %s: %s",
823 nconf->nc_netid, gai_strerror(aicode));
830 sock_fd[sock_fdcnt - 1] = fd;
832 /* Now, attempt the bind. */
833 r = bindresvport_sa(fd, res->ai_addr);
835 if (errno == EADDRINUSE && mallocd_svcport != 0) {
836 if (mallocd_res != 0) {
843 syslog(LOG_ERR, "bindresvport_sa: %m");
847 if (svcport_str == NULL) {
848 svcport_str = malloc(NI_MAXSERV * sizeof(char));
849 if (svcport_str == NULL)
853 if (getnameinfo(res->ai_addr,
854 res->ai_addr->sa_len, NULL, NI_MAXHOST,
855 svcport_str, NI_MAXSERV * sizeof(char),
856 NI_NUMERICHOST | NI_NUMERICSERV))
857 errx(1, "Cannot get port number");
859 if (mallocd_res != 0) {
870 * Called after all the create_service() calls have succeeded, to complete
871 * the setup and registration.
874 complete_service(struct netconfig *nconf, char *port_str)
876 struct addrinfo hints, *res = NULL;
877 struct __rpc_sockinfo si;
878 struct netbuf servaddr;
879 SVCXPRT *transp = NULL;
880 int aicode, fd, nhostsbak;
883 if ((nconf->nc_semantics != NC_TPI_CLTS) &&
884 (nconf->nc_semantics != NC_TPI_COTS) &&
885 (nconf->nc_semantics != NC_TPI_COTS_ORD))
886 return; /* not my type */
889 * XXX - using RPC library internal functions.
891 if (!__rpc_nconf2sockinfo(nconf, &si)) {
892 syslog(LOG_ERR, "cannot get information for %s",
898 while (nhostsbak > 0) {
900 if (sock_fdpos >= sock_fdcnt) {
901 /* Should never happen. */
902 syslog(LOG_ERR, "Ran out of socket fd's");
905 fd = sock_fd[sock_fdpos++];
910 * Using -1 tells listen(2) to use
911 * kern.ipc.soacceptqueue for the backlog.
913 if (nconf->nc_semantics != NC_TPI_CLTS)
916 if (nconf->nc_semantics == NC_TPI_CLTS )
917 transp = svc_dg_create(fd, 0, 0);
919 transp = svc_vc_create(fd, RPC_MAXDATASIZE,
922 if (transp != (SVCXPRT *) NULL) {
923 if (!svc_reg(transp, MOUNTPROG, MOUNTVERS, mntsrv,
926 "can't register %s MOUNTVERS service",
929 if (!svc_reg(transp, MOUNTPROG, MOUNTVERS3,
932 "can't register %s MOUNTVERS3 service",
936 syslog(LOG_WARNING, "can't create %s services",
939 if (registered == 0) {
941 memset(&hints, 0, sizeof hints);
942 hints.ai_flags = AI_PASSIVE;
943 hints.ai_family = si.si_af;
944 hints.ai_socktype = si.si_socktype;
945 hints.ai_protocol = si.si_proto;
947 if ((aicode = getaddrinfo(NULL, port_str, &hints,
949 syslog(LOG_ERR, "cannot get local address: %s",
950 gai_strerror(aicode));
954 servaddr.buf = malloc(res->ai_addrlen);
955 memcpy(servaddr.buf, res->ai_addr, res->ai_addrlen);
956 servaddr.len = res->ai_addrlen;
958 rpcb_set(MOUNTPROG, MOUNTVERS, nconf, &servaddr);
959 rpcb_set(MOUNTPROG, MOUNTVERS3, nconf, &servaddr);
968 * Clear out sockets after a failure to bind one of them, so that the
969 * cycle of socket creation/binding can start anew.
972 clearout_service(void)
976 for (i = 0; i < sock_fdcnt; i++) {
977 if (sock_fd[i] >= 0) {
978 shutdown(sock_fd[i], SHUT_RDWR);
988 "usage: mountd [-2] [-d] [-e] [-l] [-n] [-p <port>] [-r] "
989 "[-S] [-h <bindip>] [export_file ...]\n");
994 * The mount rpc service
997 mntsrv(struct svc_req *rqstp, SVCXPRT *transp)
999 struct exportlist *ep;
1001 struct fhreturn fhr;
1004 char host[NI_MAXHOST], numerichost[NI_MAXHOST];
1005 int lookup_failed = 1;
1006 struct sockaddr *saddr;
1008 char rpcpath[MNTPATHLEN + 1], dirpath[MAXPATHLEN];
1009 int bad = 0, defset, hostset;
1010 sigset_t sighup_mask;
1011 int numsecflavors, *secflavorsp;
1013 sigemptyset(&sighup_mask);
1014 sigaddset(&sighup_mask, SIGHUP);
1015 saddr = svc_getrpccaller(transp)->buf;
1016 switch (saddr->sa_family) {
1018 sport = ntohs(((struct sockaddr_in6 *)saddr)->sin6_port);
1021 sport = ntohs(((struct sockaddr_in *)saddr)->sin_port);
1024 syslog(LOG_ERR, "request from unknown address family");
1027 switch (rqstp->rq_proc) {
1029 case MOUNTPROC_UMNT:
1030 case MOUNTPROC_UMNTALL:
1031 lookup_failed = getnameinfo(saddr, saddr->sa_len, host,
1032 sizeof host, NULL, 0, 0);
1034 getnameinfo(saddr, saddr->sa_len, numerichost,
1035 sizeof numerichost, NULL, 0, NI_NUMERICHOST);
1036 switch (rqstp->rq_proc) {
1038 if (!svc_sendreply(transp, (xdrproc_t)xdr_void, NULL))
1039 syslog(LOG_ERR, "can't send reply");
1042 if (sport >= IPPORT_RESERVED && resvport_only) {
1044 "mount request from %s from unprivileged port",
1046 svcerr_weakauth(transp);
1049 if (!svc_getargs(transp, (xdrproc_t)xdr_dir, rpcpath)) {
1050 syslog(LOG_NOTICE, "undecodable mount request from %s",
1052 svcerr_decode(transp);
1057 * Get the real pathname and make sure it is a directory
1058 * or a regular file if the -r option was specified
1061 if (realpath(rpcpath, dirpath) == NULL ||
1062 stat(dirpath, &stb) < 0 ||
1063 statfs(dirpath, &fsb) < 0) {
1064 chdir("/"); /* Just in case realpath doesn't */
1066 "mount request from %s for non existent path %s",
1067 numerichost, dirpath);
1069 warnx("stat failed on %s", dirpath);
1070 bad = ENOENT; /* We will send error reply later */
1073 !S_ISDIR(stb.st_mode) &&
1074 (dir_only || !S_ISREG(stb.st_mode))) {
1076 "mount request from %s for non-directory path %s",
1077 numerichost, dirpath);
1079 warnx("mounting non-directory %s", dirpath);
1080 bad = ENOTDIR; /* We will send error reply later */
1083 /* Check in the exports list */
1084 sigprocmask(SIG_BLOCK, &sighup_mask, NULL);
1088 ep = ex_search(&fsb.f_fsid);
1089 hostset = defset = 0;
1090 if (ep && (chk_host(ep->ex_defdir, saddr, &defset, &hostset,
1091 &numsecflavors, &secflavorsp) ||
1092 ((dp = dirp_search(ep->ex_dirl, dirpath)) &&
1093 chk_host(dp, saddr, &defset, &hostset, &numsecflavors,
1095 (defset && scan_tree(ep->ex_defdir, saddr) == 0 &&
1096 scan_tree(ep->ex_dirl, saddr) == 0))) {
1098 if (!svc_sendreply(transp, (xdrproc_t)xdr_long,
1100 syslog(LOG_ERR, "can't send reply");
1101 sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
1104 if (hostset & DP_HOSTSET) {
1105 fhr.fhr_flag = hostset;
1106 fhr.fhr_numsecflavors = numsecflavors;
1107 fhr.fhr_secflavors = secflavorsp;
1109 fhr.fhr_flag = defset;
1110 fhr.fhr_numsecflavors = ep->ex_defnumsecflavors;
1111 fhr.fhr_secflavors = ep->ex_defsecflavors;
1113 fhr.fhr_vers = rqstp->rq_vers;
1114 /* Get the file handle */
1115 memset(&fhr.fhr_fh, 0, sizeof(nfsfh_t));
1116 if (getfh(dirpath, (fhandle_t *)&fhr.fhr_fh) < 0) {
1118 syslog(LOG_ERR, "can't get fh for %s", dirpath);
1119 if (!svc_sendreply(transp, (xdrproc_t)xdr_long,
1121 syslog(LOG_ERR, "can't send reply");
1122 sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
1125 if (!svc_sendreply(transp, (xdrproc_t)xdr_fhs,
1127 syslog(LOG_ERR, "can't send reply");
1129 add_mlist(host, dirpath);
1131 add_mlist(numerichost, dirpath);
1133 warnx("mount successful");
1136 "mount request succeeded from %s for %s",
1137 numerichost, dirpath);
1142 "mount request denied from %s for %s",
1143 numerichost, dirpath);
1146 if (bad && !svc_sendreply(transp, (xdrproc_t)xdr_long,
1148 syslog(LOG_ERR, "can't send reply");
1149 sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
1151 case MOUNTPROC_DUMP:
1152 if (!svc_sendreply(transp, (xdrproc_t)xdr_mlist, (caddr_t)NULL))
1153 syslog(LOG_ERR, "can't send reply");
1156 "dump request succeeded from %s",
1159 case MOUNTPROC_UMNT:
1160 if (sport >= IPPORT_RESERVED && resvport_only) {
1162 "umount request from %s from unprivileged port",
1164 svcerr_weakauth(transp);
1167 if (!svc_getargs(transp, (xdrproc_t)xdr_dir, rpcpath)) {
1168 syslog(LOG_NOTICE, "undecodable umount request from %s",
1170 svcerr_decode(transp);
1173 if (realpath(rpcpath, dirpath) == NULL) {
1174 syslog(LOG_NOTICE, "umount request from %s "
1175 "for non existent path %s",
1176 numerichost, dirpath);
1178 if (!svc_sendreply(transp, (xdrproc_t)xdr_void, (caddr_t)NULL))
1179 syslog(LOG_ERR, "can't send reply");
1181 del_mlist(host, dirpath);
1182 del_mlist(numerichost, dirpath);
1185 "umount request succeeded from %s for %s",
1186 numerichost, dirpath);
1188 case MOUNTPROC_UMNTALL:
1189 if (sport >= IPPORT_RESERVED && resvport_only) {
1191 "umountall request from %s from unprivileged port",
1193 svcerr_weakauth(transp);
1196 if (!svc_sendreply(transp, (xdrproc_t)xdr_void, (caddr_t)NULL))
1197 syslog(LOG_ERR, "can't send reply");
1199 del_mlist(host, NULL);
1200 del_mlist(numerichost, NULL);
1203 "umountall request succeeded from %s",
1206 case MOUNTPROC_EXPORT:
1207 if (!svc_sendreply(transp, (xdrproc_t)xdr_explist, (caddr_t)NULL))
1208 if (!svc_sendreply(transp, (xdrproc_t)xdr_explist_brief,
1210 syslog(LOG_ERR, "can't send reply");
1213 "export request succeeded from %s",
1217 svcerr_noproc(transp);
1223 * Xdr conversion for a dirpath string
1226 xdr_dir(XDR *xdrsp, char *dirp)
1228 return (xdr_string(xdrsp, &dirp, MNTPATHLEN));
1232 * Xdr routine to generate file handle reply
1235 xdr_fhs(XDR *xdrsp, caddr_t cp)
1237 struct fhreturn *fhrp = (struct fhreturn *)cp;
1238 u_long ok = 0, len, auth;
1241 if (!xdr_long(xdrsp, &ok))
1243 switch (fhrp->fhr_vers) {
1245 return (xdr_opaque(xdrsp, (caddr_t)&fhrp->fhr_fh, NFSX_V2FH));
1248 if (!xdr_long(xdrsp, &len))
1250 if (!xdr_opaque(xdrsp, (caddr_t)&fhrp->fhr_fh, len))
1252 if (fhrp->fhr_numsecflavors) {
1253 if (!xdr_int(xdrsp, &fhrp->fhr_numsecflavors))
1255 for (i = 0; i < fhrp->fhr_numsecflavors; i++)
1256 if (!xdr_int(xdrsp, &fhrp->fhr_secflavors[i]))
1262 if (!xdr_long(xdrsp, &len))
1264 return (xdr_long(xdrsp, &auth));
1271 xdr_mlist(XDR *xdrsp, caddr_t cp __unused)
1273 struct mountlist *mlp;
1278 SLIST_FOREACH(mlp, &mlhead, next) {
1279 if (!xdr_bool(xdrsp, &true))
1281 strp = &mlp->ml_host[0];
1282 if (!xdr_string(xdrsp, &strp, MNTNAMLEN))
1284 strp = &mlp->ml_dirp[0];
1285 if (!xdr_string(xdrsp, &strp, MNTPATHLEN))
1288 if (!xdr_bool(xdrsp, &false))
1294 * Xdr conversion for export list
1297 xdr_explist_common(XDR *xdrsp, caddr_t cp __unused, int brief)
1299 struct exportlist *ep;
1302 sigset_t sighup_mask;
1304 sigemptyset(&sighup_mask);
1305 sigaddset(&sighup_mask, SIGHUP);
1306 sigprocmask(SIG_BLOCK, &sighup_mask, NULL);
1308 SLIST_FOREACH(ep, &exphead, entries) {
1310 if (put_exlist(ep->ex_dirl, xdrsp, ep->ex_defdir,
1313 if (ep->ex_defdir && putdef == 0 &&
1314 put_exlist(ep->ex_defdir, xdrsp, (struct dirlist *)NULL,
1318 sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
1319 if (!xdr_bool(xdrsp, &false))
1323 sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
1328 * Called from xdr_explist() to traverse the tree and export the
1332 put_exlist(struct dirlist *dp, XDR *xdrsp, struct dirlist *adp, int *putdefp,
1335 struct grouplist *grp;
1336 struct hostlist *hp;
1343 if (put_exlist(dp->dp_left, xdrsp, adp, putdefp, brief))
1345 if (!xdr_bool(xdrsp, &true))
1348 if (!xdr_string(xdrsp, &strp, MNTPATHLEN))
1350 if (adp && !strcmp(dp->dp_dirp, adp->dp_dirp)) {
1355 if (!xdr_bool(xdrsp, &true))
1358 if (!xdr_string(xdrsp, &strp, MNTPATHLEN))
1360 } else if ((dp->dp_flag & DP_DEFSET) == 0 &&
1361 (gotalldir == 0 || (adp->dp_flag & DP_DEFSET) == 0)) {
1365 if (grp->gr_type == GT_HOST) {
1366 if (!xdr_bool(xdrsp, &true))
1368 strp = grp->gr_ptr.gt_addrinfo->ai_canonname;
1369 if (!xdr_string(xdrsp, &strp,
1372 } else if (grp->gr_type == GT_NET) {
1373 if (!xdr_bool(xdrsp, &true))
1375 strp = grp->gr_ptr.gt_net.nt_name;
1376 if (!xdr_string(xdrsp, &strp,
1381 if (gotalldir && hp == (struct hostlist *)NULL) {
1387 if (!xdr_bool(xdrsp, &false))
1389 if (put_exlist(dp->dp_right, xdrsp, adp, putdefp, brief))
1396 xdr_explist(XDR *xdrsp, caddr_t cp)
1399 return xdr_explist_common(xdrsp, cp, 0);
1403 xdr_explist_brief(XDR *xdrsp, caddr_t cp)
1406 return xdr_explist_common(xdrsp, cp, 1);
1410 static size_t linesize;
1411 static FILE *exp_file;
1414 * Get the export list from one, currently open file
1417 get_exportlist_one(void)
1419 struct exportlist *ep;
1420 struct grouplist *grp, *tgrp;
1421 struct dirlist *dirhead;
1424 char *cp, *endcp, *dirp, *hst, *usr, *dom, savedc;
1425 int len, has_host, exflags, got_nondir, dirplen, netgrp;
1428 dirhead = (struct dirlist *)NULL;
1429 while (get_line()) {
1431 warnx("got line %s", line);
1433 nextfield(&cp, &endcp);
1442 exflags = MNT_EXPORTED;
1445 ep = (struct exportlist *)NULL;
1449 * Handle the V4 root dir.
1451 if (*cp == 'V' && *(cp + 1) == '4' && *(cp + 2) == ':') {
1453 * V4: just indicates that it is the v4 root point,
1454 * so skip over that and set v4root_phase.
1456 if (v4root_phase > 0) {
1457 syslog(LOG_ERR, "V4:duplicate line, ignored");
1462 nextfield(&cp, &endcp);
1466 * Create new exports list entry
1469 tgrp = grp = get_grp();
1471 if (len > MNTNAMLEN) {
1472 getexp_err(ep, tgrp, "mountpoint too long");
1476 if (ep == (struct exportlist *)NULL) {
1477 getexp_err(ep, tgrp,
1478 "flag before export path definition");
1482 warnx("doing opt %s", cp);
1484 if (do_opt(&cp, &endcp, ep, grp, &has_host,
1486 getexp_err(ep, tgrp, NULL);
1489 } else if (*cp == '/') {
1492 if (v4root_phase > 1) {
1494 getexp_err(ep, tgrp, "Multiple V4 dirs");
1498 if (check_dirpath(cp) &&
1499 statfs(cp, &fsb) >= 0) {
1500 if ((fsb.f_flags & MNT_AUTOMOUNTED) != 0)
1501 syslog(LOG_ERR, "Warning: exporting of "
1502 "automounted fs %s not supported", cp);
1504 getexp_err(ep, tgrp, "dirs must be first");
1507 if (v4root_phase == 1) {
1509 getexp_err(ep, tgrp, "Multiple V4 dirs");
1512 if (strlen(v4root_dirpath) == 0) {
1513 strlcpy(v4root_dirpath, cp,
1514 sizeof (v4root_dirpath));
1515 } else if (strcmp(v4root_dirpath, cp)
1518 "different V4 dirpath %s", cp);
1519 getexp_err(ep, tgrp, NULL);
1528 if (ep->ex_fs.val[0] !=
1529 fsb.f_fsid.val[0] ||
1531 fsb.f_fsid.val[1]) {
1532 getexp_err(ep, tgrp,
1538 * See if this directory is already
1541 ep = ex_search(&fsb.f_fsid);
1542 if (ep == (struct exportlist *)NULL) {
1544 ep->ex_fs = fsb.f_fsid;
1545 ep->ex_fsdir = strdup(fsb.f_mntonname);
1546 if (ep->ex_fsdir == NULL)
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,
1567 "symbolic link in export path or statfs failed");
1575 if (ep == (struct exportlist *)NULL) {
1576 getexp_err(ep, tgrp,
1577 "host(s) before export path definition");
1582 * Get the host or netgroup.
1585 netgrp = getnetgrent(&hst, &usr, &dom);
1588 grp->gr_next = get_grp();
1594 "null hostname in netgroup %s, skipping", cp);
1595 grp->gr_type = GT_IGNORE;
1596 } else if (get_host(hst, grp, tgrp)) {
1598 "bad host %s in netgroup %s, skipping", hst, cp);
1599 grp->gr_type = GT_IGNORE;
1601 } else if (get_host(cp, grp, tgrp)) {
1602 syslog(LOG_ERR, "bad host %s, skipping", cp);
1603 grp->gr_type = GT_IGNORE;
1606 } while (netgrp && getnetgrent(&hst, &usr, &dom));
1611 nextfield(&cp, &endcp);
1614 if (check_options(dirhead)) {
1615 getexp_err(ep, tgrp, NULL);
1619 grp->gr_type = GT_DEFAULT;
1621 warnx("adding a default entry");
1624 * Don't allow a network export coincide with a list of
1625 * host(s) on the same line.
1627 } else if ((opt_flags & OP_NET) && tgrp->gr_next) {
1628 getexp_err(ep, tgrp, "network/host conflict");
1632 * If an export list was specified on this line, make sure
1633 * that we have at least one valid entry, otherwise skip it.
1637 while (grp && grp->gr_type == GT_IGNORE)
1640 getexp_err(ep, tgrp, "no valid entries");
1645 if (v4root_phase == 1) {
1646 getexp_err(ep, tgrp, "V4:root, no dirp, ignored");
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, NULL);
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) {
1696 SLIST_INSERT_HEAD(&exphead, ep, entries);
1698 ep->ex_flag |= EX_LINKED;
1704 dirhead = (struct dirlist *)NULL;
1710 * Get the export list from all specified files
1713 get_exportlist(void)
1715 struct exportlist *ep, *ep2;
1716 struct grouplist *grp, *tgrp;
1717 struct export_args export;
1719 struct statfs *fsp, *mntbufp;
1720 struct xvfsconf vfc;
1725 struct nfsex_args eargs;
1727 if (suspend_nfsd != 0)
1728 (void)nfssvc(NFSSVC_SUSPENDNFSD, NULL);
1729 v4root_dirpath[0] = '\0';
1730 bzero(&export, sizeof(export));
1731 export.ex_flags = MNT_DELEXPORT;
1734 bzero(errmsg, sizeof(errmsg));
1737 * First, get rid of the old list
1739 SLIST_FOREACH_SAFE(ep, &exphead, entries, ep2) {
1740 SLIST_REMOVE(&exphead, ep, exportlist, entries);
1750 grphead = (struct grouplist *)NULL;
1753 * and the old V4 root dir.
1755 bzero(&eargs, sizeof (eargs));
1756 eargs.export.ex_flags = MNT_DELEXPORT;
1757 if (nfssvc(NFSSVC_V4ROOTEXPORT, (caddr_t)&eargs) < 0 &&
1759 syslog(LOG_ERR, "Can't delete exports for V4:");
1762 * and clear flag that notes if a public fh has been exported.
1767 * And delete exports that are in the kernel for all local
1769 * XXX: Should know how to handle all local exportable filesystems.
1771 num = getmntinfo(&mntbufp, MNT_NOWAIT);
1774 build_iovec(&iov, &iovlen, "fstype", NULL, 0);
1775 build_iovec(&iov, &iovlen, "fspath", NULL, 0);
1776 build_iovec(&iov, &iovlen, "from", NULL, 0);
1777 build_iovec(&iov, &iovlen, "update", NULL, 0);
1778 build_iovec(&iov, &iovlen, "export", &export, sizeof(export));
1779 build_iovec(&iov, &iovlen, "errmsg", errmsg, sizeof(errmsg));
1782 for (i = 0; i < num; i++) {
1784 if (getvfsbyname(fsp->f_fstypename, &vfc) != 0) {
1785 syslog(LOG_ERR, "getvfsbyname() failed for %s",
1791 * We do not need to delete "export" flag from
1792 * filesystems that do not have it set.
1794 if (!(fsp->f_flags & MNT_EXPORTED))
1797 * Do not delete export for network filesystem by
1798 * passing "export" arg to nmount().
1799 * It only makes sense to do this for local filesystems.
1801 if (vfc.vfc_flags & VFCF_NETWORK)
1804 iov[1].iov_base = fsp->f_fstypename;
1805 iov[1].iov_len = strlen(fsp->f_fstypename) + 1;
1806 iov[3].iov_base = fsp->f_mntonname;
1807 iov[3].iov_len = strlen(fsp->f_mntonname) + 1;
1808 iov[5].iov_base = fsp->f_mntfromname;
1809 iov[5].iov_len = strlen(fsp->f_mntfromname) + 1;
1813 * EXDEV is returned when path exists but is not a
1814 * mount point. May happens if raced with unmount.
1816 if (nmount(iov, iovlen, fsp->f_flags) < 0 &&
1817 errno != ENOENT && errno != ENOTSUP && errno != EXDEV) {
1819 "can't delete exports for %s: %m %s",
1820 fsp->f_mntonname, errmsg);
1825 /* Free strings allocated by strdup() in getmntopts.c */
1826 free(iov[0].iov_base); /* fstype */
1827 free(iov[2].iov_base); /* fspath */
1828 free(iov[4].iov_base); /* from */
1829 free(iov[6].iov_base); /* update */
1830 free(iov[8].iov_base); /* export */
1831 free(iov[10].iov_base); /* errmsg */
1833 /* free iov, allocated by realloc() */
1839 * Read in the exports file and build the list, calling
1840 * nmount() as we go along to push the export rules into the kernel.
1843 for (i = 0; exnames[i] != NULL; i++) {
1845 warnx("reading exports from %s", exnames[i]);
1846 if ((exp_file = fopen(exnames[i], "r")) == NULL) {
1847 syslog(LOG_WARNING, "can't open %s", exnames[i]);
1850 get_exportlist_one();
1855 syslog(LOG_ERR, "can't open any exports file");
1860 * If there was no public fh, clear any previous one set.
1862 if (has_publicfh == 0)
1863 (void) nfssvc(NFSSVC_NOPUBLICFH, NULL);
1865 /* Resume the nfsd. If they weren't suspended, this is harmless. */
1866 (void)nfssvc(NFSSVC_RESUMENFSD, NULL);
1870 * Allocate an export list element
1872 static struct exportlist *
1875 struct exportlist *ep;
1877 ep = (struct exportlist *)calloc(1, sizeof (struct exportlist));
1878 if (ep == (struct exportlist *)NULL)
1884 * Allocate a group list element
1886 static struct grouplist *
1889 struct grouplist *gp;
1891 gp = (struct grouplist *)calloc(1, sizeof (struct grouplist));
1892 if (gp == (struct grouplist *)NULL)
1898 * Clean up upon an error in get_exportlist().
1901 getexp_err(struct exportlist *ep, struct grouplist *grp, const char *reason)
1903 struct grouplist *tgrp;
1905 if (!(opt_flags & OP_QUIET)) {
1907 syslog(LOG_ERR, "bad exports list line '%s': %s", line,
1910 syslog(LOG_ERR, "bad exports list line '%s'", line);
1912 if (ep && (ep->ex_flag & EX_LINKED) == 0)
1922 * Search the export list for a matching fs.
1924 static struct exportlist *
1925 ex_search(fsid_t *fsid)
1927 struct exportlist *ep;
1929 SLIST_FOREACH(ep, &exphead, entries) {
1930 if (ep->ex_fs.val[0] == fsid->val[0] &&
1931 ep->ex_fs.val[1] == fsid->val[1])
1939 * Add a directory path to the list.
1942 add_expdir(struct dirlist **dpp, char *cp, int len)
1946 dp = malloc(sizeof (struct dirlist));
1947 if (dp == (struct dirlist *)NULL)
1950 dp->dp_right = (struct dirlist *)NULL;
1952 dp->dp_hosts = (struct hostlist *)NULL;
1953 dp->dp_dirp = strndup(cp, len);
1954 if (dp->dp_dirp == NULL)
1957 return (dp->dp_dirp);
1961 * Hang the dir list element off the dirpath binary tree as required
1962 * and update the entry for host.
1965 hang_dirp(struct dirlist *dp, struct grouplist *grp, struct exportlist *ep,
1968 struct hostlist *hp;
1969 struct dirlist *dp2;
1971 if (flags & OP_ALLDIRS) {
1976 if (grp == (struct grouplist *)NULL) {
1977 ep->ex_defdir->dp_flag |= DP_DEFSET;
1978 /* Save the default security flavors list. */
1979 ep->ex_defnumsecflavors = ep->ex_numsecflavors;
1980 if (ep->ex_numsecflavors > 0)
1981 memcpy(ep->ex_defsecflavors, ep->ex_secflavors,
1982 sizeof(ep->ex_secflavors));
1983 } else while (grp) {
1986 hp->ht_next = ep->ex_defdir->dp_hosts;
1987 ep->ex_defdir->dp_hosts = hp;
1988 /* Save the security flavors list for this host set. */
1989 grp->gr_numsecflavors = ep->ex_numsecflavors;
1990 if (ep->ex_numsecflavors > 0)
1991 memcpy(grp->gr_secflavors, ep->ex_secflavors,
1992 sizeof(ep->ex_secflavors));
1998 * Loop through the directories adding them to the tree.
2002 add_dlist(&ep->ex_dirl, dp, grp, flags, ep);
2009 * Traverse the binary tree either updating a node that is already there
2010 * for the new directory or adding the new node.
2013 add_dlist(struct dirlist **dpp, struct dirlist *newdp, struct grouplist *grp,
2014 int flags, struct exportlist *ep)
2017 struct hostlist *hp;
2022 cmp = strcmp(dp->dp_dirp, newdp->dp_dirp);
2024 add_dlist(&dp->dp_left, newdp, grp, flags, ep);
2026 } else if (cmp < 0) {
2027 add_dlist(&dp->dp_right, newdp, grp, flags, ep);
2030 free((caddr_t)newdp);
2033 dp->dp_left = (struct dirlist *)NULL;
2039 * Hang all of the host(s) off of the directory point.
2044 hp->ht_next = dp->dp_hosts;
2046 /* Save the security flavors list for this host set. */
2047 grp->gr_numsecflavors = ep->ex_numsecflavors;
2048 if (ep->ex_numsecflavors > 0)
2049 memcpy(grp->gr_secflavors, ep->ex_secflavors,
2050 sizeof(ep->ex_secflavors));
2054 dp->dp_flag |= DP_DEFSET;
2055 /* Save the default security flavors list. */
2056 ep->ex_defnumsecflavors = ep->ex_numsecflavors;
2057 if (ep->ex_numsecflavors > 0)
2058 memcpy(ep->ex_defsecflavors, ep->ex_secflavors,
2059 sizeof(ep->ex_secflavors));
2064 * Search for a dirpath on the export point.
2066 static struct dirlist *
2067 dirp_search(struct dirlist *dp, char *dirp)
2072 cmp = strcmp(dp->dp_dirp, dirp);
2074 return (dirp_search(dp->dp_left, dirp));
2076 return (dirp_search(dp->dp_right, dirp));
2084 * Scan for a host match in a directory tree.
2087 chk_host(struct dirlist *dp, struct sockaddr *saddr, int *defsetp,
2088 int *hostsetp, int *numsecflavors, int **secflavorsp)
2090 struct hostlist *hp;
2091 struct grouplist *grp;
2092 struct addrinfo *ai;
2095 if (dp->dp_flag & DP_DEFSET)
2096 *defsetp = dp->dp_flag;
2100 switch (grp->gr_type) {
2102 ai = grp->gr_ptr.gt_addrinfo;
2103 for (; ai; ai = ai->ai_next) {
2104 if (!sacmp(ai->ai_addr, saddr, NULL)) {
2106 (hp->ht_flag | DP_HOSTSET);
2107 if (numsecflavors != NULL) {
2109 grp->gr_numsecflavors;
2118 if (!sacmp(saddr, (struct sockaddr *)
2119 &grp->gr_ptr.gt_net.nt_net,
2121 &grp->gr_ptr.gt_net.nt_mask)) {
2122 *hostsetp = (hp->ht_flag | DP_HOSTSET);
2123 if (numsecflavors != NULL) {
2125 grp->gr_numsecflavors;
2140 * Scan tree for a host that matches the address.
2143 scan_tree(struct dirlist *dp, struct sockaddr *saddr)
2145 int defset, hostset;
2148 if (scan_tree(dp->dp_left, saddr))
2150 if (chk_host(dp, saddr, &defset, &hostset, NULL, NULL))
2152 if (scan_tree(dp->dp_right, saddr))
2159 * Traverse the dirlist tree and free it up.
2162 free_dir(struct dirlist *dp)
2166 free_dir(dp->dp_left);
2167 free_dir(dp->dp_right);
2168 free_host(dp->dp_hosts);
2175 * Parse a colon separated list of security flavors
2178 parsesec(char *seclist, struct exportlist *ep)
2183 ep->ex_numsecflavors = 0;
2185 cp = strchr(seclist, ':');
2191 if (!strcmp(seclist, "sys"))
2193 else if (!strcmp(seclist, "krb5"))
2194 flavor = RPCSEC_GSS_KRB5;
2195 else if (!strcmp(seclist, "krb5i"))
2196 flavor = RPCSEC_GSS_KRB5I;
2197 else if (!strcmp(seclist, "krb5p"))
2198 flavor = RPCSEC_GSS_KRB5P;
2202 syslog(LOG_ERR, "bad sec flavor: %s", seclist);
2205 if (ep->ex_numsecflavors == MAXSECFLAVORS) {
2208 syslog(LOG_ERR, "too many sec flavors: %s", seclist);
2211 ep->ex_secflavors[ep->ex_numsecflavors] = flavor;
2212 ep->ex_numsecflavors++;
2224 * Parse the option string and update fields.
2225 * Option arguments may either be -<option>=<value> or
2229 do_opt(char **cpp, char **endcpp, struct exportlist *ep, struct grouplist *grp,
2230 int *has_hostp, int *exflagsp, struct xucred *cr)
2232 char *cpoptarg, *cpoptend;
2233 char *cp, *endcp, *cpopt, savedc, savedc2;
2234 int allflag, usedarg;
2242 while (cpopt && *cpopt) {
2245 if ((cpoptend = strchr(cpopt, ','))) {
2247 if ((cpoptarg = strchr(cpopt, '=')))
2250 if ((cpoptarg = strchr(cpopt, '=')))
2254 nextfield(&cp, &endcp);
2256 if (endcp > cp && *cp != '-') {
2264 if (!strcmp(cpopt, "ro") || !strcmp(cpopt, "o")) {
2265 *exflagsp |= MNT_EXRDONLY;
2266 } else if (cpoptarg && (!strcmp(cpopt, "maproot") ||
2267 !(allflag = strcmp(cpopt, "mapall")) ||
2268 !strcmp(cpopt, "root") || !strcmp(cpopt, "r"))) {
2270 parsecred(cpoptarg, cr);
2272 *exflagsp |= MNT_EXPORTANON;
2273 opt_flags |= OP_MAPALL;
2275 opt_flags |= OP_MAPROOT;
2276 } else if (cpoptarg && (!strcmp(cpopt, "mask") ||
2277 !strcmp(cpopt, "m"))) {
2278 if (get_net(cpoptarg, &grp->gr_ptr.gt_net, 1)) {
2279 syslog(LOG_ERR, "bad mask: %s", cpoptarg);
2283 opt_flags |= OP_MASK;
2284 } else if (cpoptarg && (!strcmp(cpopt, "network") ||
2285 !strcmp(cpopt, "n"))) {
2286 if (strchr(cpoptarg, '/') != NULL) {
2288 fprintf(stderr, "setting OP_MASKLEN\n");
2289 opt_flags |= OP_MASKLEN;
2291 if (grp->gr_type != GT_NULL) {
2292 syslog(LOG_ERR, "network/host conflict");
2294 } else if (get_net(cpoptarg, &grp->gr_ptr.gt_net, 0)) {
2295 syslog(LOG_ERR, "bad net: %s", cpoptarg);
2298 grp->gr_type = GT_NET;
2301 opt_flags |= OP_NET;
2302 } else if (!strcmp(cpopt, "alldirs")) {
2303 opt_flags |= OP_ALLDIRS;
2304 } else if (!strcmp(cpopt, "public")) {
2305 *exflagsp |= MNT_EXPUBLIC;
2306 } else if (!strcmp(cpopt, "webnfs")) {
2307 *exflagsp |= (MNT_EXPUBLIC|MNT_EXRDONLY|MNT_EXPORTANON);
2308 opt_flags |= OP_MAPALL;
2309 } else if (cpoptarg && !strcmp(cpopt, "index")) {
2310 ep->ex_indexfile = strdup(cpoptarg);
2311 } else if (!strcmp(cpopt, "quiet")) {
2312 opt_flags |= OP_QUIET;
2313 } else if (cpoptarg && !strcmp(cpopt, "sec")) {
2314 if (parsesec(cpoptarg, ep))
2316 opt_flags |= OP_SEC;
2319 syslog(LOG_ERR, "bad opt %s", cpopt);
2338 * Translate a character string to the corresponding list of network
2339 * addresses for a hostname.
2342 get_host(char *cp, struct grouplist *grp, struct grouplist *tgrp)
2344 struct grouplist *checkgrp;
2345 struct addrinfo *ai, *tai, hints;
2347 char host[NI_MAXHOST];
2349 if (grp->gr_type != GT_NULL) {
2350 syslog(LOG_ERR, "Bad netgroup type for ip host %s", cp);
2353 memset(&hints, 0, sizeof hints);
2354 hints.ai_flags = AI_CANONNAME;
2355 hints.ai_protocol = IPPROTO_UDP;
2356 ecode = getaddrinfo(cp, NULL, &hints, &ai);
2358 syslog(LOG_ERR,"can't get address info for host %s", cp);
2361 grp->gr_ptr.gt_addrinfo = ai;
2362 while (ai != NULL) {
2363 if (ai->ai_canonname == NULL) {
2364 if (getnameinfo(ai->ai_addr, ai->ai_addrlen, host,
2365 sizeof host, NULL, 0, NI_NUMERICHOST) != 0)
2366 strlcpy(host, "?", sizeof(host));
2367 ai->ai_canonname = strdup(host);
2368 ai->ai_flags |= AI_CANONNAME;
2371 fprintf(stderr, "got host %s\n", ai->ai_canonname);
2373 * Sanity check: make sure we don't already have an entry
2374 * for this host in the grouplist.
2376 for (checkgrp = tgrp; checkgrp != NULL;
2377 checkgrp = checkgrp->gr_next) {
2378 if (checkgrp->gr_type != GT_HOST)
2380 for (tai = checkgrp->gr_ptr.gt_addrinfo; tai != NULL;
2381 tai = tai->ai_next) {
2382 if (sacmp(tai->ai_addr, ai->ai_addr, NULL) != 0)
2386 "ignoring duplicate host %s\n",
2388 grp->gr_type = GT_IGNORE;
2394 grp->gr_type = GT_HOST;
2399 * Free up an exports list component
2402 free_exp(struct exportlist *ep)
2405 if (ep->ex_defdir) {
2406 free_host(ep->ex_defdir->dp_hosts);
2407 free((caddr_t)ep->ex_defdir);
2411 if (ep->ex_indexfile)
2412 free(ep->ex_indexfile);
2413 free_dir(ep->ex_dirl);
2421 free_host(struct hostlist *hp)
2423 struct hostlist *hp2;
2432 static struct hostlist *
2435 struct hostlist *hp;
2437 hp = (struct hostlist *)malloc(sizeof (struct hostlist));
2438 if (hp == (struct hostlist *)NULL)
2440 hp->ht_next = (struct hostlist *)NULL;
2446 * Out of memory, fatal
2452 syslog(LOG_ERR, "out of memory");
2457 * Do the nmount() syscall with the update flag to push the export info into
2461 do_mount(struct exportlist *ep, struct grouplist *grp, int exflags,
2462 struct xucred *anoncrp, char *dirp, int dirplen, struct statfs *fsb)
2465 struct addrinfo *ai;
2466 struct export_args *eap;
2474 struct nfsex_args nfsea;
2476 eap = &nfsea.export;
2484 bzero(eap, sizeof (struct export_args));
2485 bzero(errmsg, sizeof(errmsg));
2486 eap->ex_flags = exflags;
2487 eap->ex_anon = *anoncrp;
2488 eap->ex_indexfile = ep->ex_indexfile;
2489 if (grp->gr_type == GT_HOST)
2490 ai = grp->gr_ptr.gt_addrinfo;
2493 eap->ex_numsecflavors = ep->ex_numsecflavors;
2494 for (i = 0; i < eap->ex_numsecflavors; i++)
2495 eap->ex_secflavors[i] = ep->ex_secflavors[i];
2496 if (eap->ex_numsecflavors == 0) {
2497 eap->ex_numsecflavors = 1;
2498 eap->ex_secflavors[0] = AUTH_SYS;
2502 if (v4root_phase == 0) {
2503 build_iovec(&iov, &iovlen, "fstype", NULL, 0);
2504 build_iovec(&iov, &iovlen, "fspath", NULL, 0);
2505 build_iovec(&iov, &iovlen, "from", NULL, 0);
2506 build_iovec(&iov, &iovlen, "update", NULL, 0);
2507 build_iovec(&iov, &iovlen, "export", eap,
2508 sizeof (struct export_args));
2509 build_iovec(&iov, &iovlen, "errmsg", errmsg, sizeof(errmsg));
2513 switch (grp->gr_type) {
2515 if (ai->ai_addr->sa_family == AF_INET6 && have_v6 == 0)
2517 eap->ex_addr = ai->ai_addr;
2518 eap->ex_addrlen = ai->ai_addrlen;
2519 eap->ex_masklen = 0;
2522 if (grp->gr_ptr.gt_net.nt_net.ss_family == AF_INET6 &&
2526 (struct sockaddr *)&grp->gr_ptr.gt_net.nt_net;
2528 ((struct sockaddr *)&grp->gr_ptr.gt_net.nt_net)->sa_len;
2530 (struct sockaddr *)&grp->gr_ptr.gt_net.nt_mask;
2531 eap->ex_masklen = ((struct sockaddr *)&grp->gr_ptr.gt_net.nt_mask)->sa_len;
2534 eap->ex_addr = NULL;
2535 eap->ex_addrlen = 0;
2536 eap->ex_mask = NULL;
2537 eap->ex_masklen = 0;
2544 syslog(LOG_ERR, "bad grouptype");
2552 * For V4:, use the nfssvc() syscall, instead of mount().
2554 if (v4root_phase == 2) {
2555 nfsea.fspec = v4root_dirpath;
2556 if (nfssvc(NFSSVC_V4ROOTEXPORT, (caddr_t)&nfsea) < 0) {
2557 syslog(LOG_ERR, "Exporting V4: failed");
2563 * Maybe I should just use the fsb->f_mntonname path
2564 * instead of looping back up the dirp to the mount
2566 * Also, needs to know how to export all types of local
2567 * exportable filesystems and not just "ufs".
2569 iov[1].iov_base = fsb->f_fstypename; /* "fstype" */
2570 iov[1].iov_len = strlen(fsb->f_fstypename) + 1;
2571 iov[3].iov_base = fsb->f_mntonname; /* "fspath" */
2572 iov[3].iov_len = strlen(fsb->f_mntonname) + 1;
2573 iov[5].iov_base = fsb->f_mntfromname; /* "from" */
2574 iov[5].iov_len = strlen(fsb->f_mntfromname) + 1;
2577 while (nmount(iov, iovlen, fsb->f_flags) < 0) {
2581 cp = dirp + dirplen - 1;
2582 if (opt_flags & OP_QUIET) {
2586 if (errno == EPERM) {
2588 warnx("can't change attributes for %s: %s",
2591 "can't change attributes for %s: %s",
2596 if (opt_flags & OP_ALLDIRS) {
2597 if (errno == EINVAL)
2599 "-alldirs requested but %s is not a filesystem mountpoint",
2603 "could not remount %s: %m",
2608 /* back up over the last component */
2609 while (*cp == '/' && cp > dirp)
2611 while (*(cp - 1) != '/' && cp > dirp)
2615 warnx("mnt unsucc");
2616 syslog(LOG_ERR, "can't export %s %s",
2624 * Check that we're still on the same
2627 if (statfs(dirp, &fsb1) != 0 ||
2628 bcmp(&fsb1.f_fsid, &fsb->f_fsid,
2629 sizeof (fsb1.f_fsid)) != 0) {
2632 "can't export %s %s", dirp,
2641 * For the experimental server:
2642 * If this is the public directory, get the file handle
2643 * and load it into the kernel via the nfssvc() syscall.
2645 if ((exflags & MNT_EXPUBLIC) != 0) {
2649 if (eap->ex_indexfile != NULL)
2650 public_name = eap->ex_indexfile;
2653 if (getfh(public_name, &fh) < 0)
2655 "Can't get public fh for %s", public_name);
2656 else if (nfssvc(NFSSVC_PUBLICFH, (caddr_t)&fh) < 0)
2658 "Can't set public fh for %s", public_name);
2671 /* free strings allocated by strdup() in getmntopts.c */
2673 free(iov[0].iov_base); /* fstype */
2674 free(iov[2].iov_base); /* fspath */
2675 free(iov[4].iov_base); /* from */
2676 free(iov[6].iov_base); /* update */
2677 free(iov[8].iov_base); /* export */
2678 free(iov[10].iov_base); /* errmsg */
2680 /* free iov, allocated by realloc() */
2687 * Translate a net address.
2689 * If `maskflg' is nonzero, then `cp' is a netmask, not a network address.
2692 get_net(char *cp, struct netmsk *net, int maskflg)
2694 struct netent *np = NULL;
2695 char *name, *p, *prefp;
2696 struct sockaddr_in sin;
2697 struct sockaddr *sa = NULL;
2698 struct addrinfo hints, *ai = NULL;
2699 char netname[NI_MAXHOST];
2703 if ((opt_flags & OP_MASKLEN) && !maskflg) {
2704 p = strchr(cp, '/');
2710 * Check for a numeric address first. We wish to avoid
2711 * possible DNS lookups in getnetbyname().
2713 if (isxdigit(*cp) || *cp == ':') {
2714 memset(&hints, 0, sizeof hints);
2715 /* Ensure the mask and the network have the same family. */
2716 if (maskflg && (opt_flags & OP_NET))
2717 hints.ai_family = net->nt_net.ss_family;
2718 else if (!maskflg && (opt_flags & OP_HAVEMASK))
2719 hints.ai_family = net->nt_mask.ss_family;
2721 hints.ai_family = AF_UNSPEC;
2722 hints.ai_flags = AI_NUMERICHOST;
2723 if (getaddrinfo(cp, NULL, &hints, &ai) == 0)
2725 if (sa != NULL && ai->ai_family == AF_INET) {
2727 * The address in `cp' is really a network address, so
2728 * use inet_network() to re-interpret this correctly.
2729 * e.g. "127.1" means 127.1.0.0, not 127.0.0.1.
2731 bzero(&sin, sizeof sin);
2732 sin.sin_family = AF_INET;
2733 sin.sin_len = sizeof sin;
2734 sin.sin_addr = inet_makeaddr(inet_network(cp), 0);
2736 fprintf(stderr, "get_net: v4 addr %s\n",
2737 inet_ntoa(sin.sin_addr));
2738 sa = (struct sockaddr *)&sin;
2741 if (sa == NULL && (np = getnetbyname(cp)) != NULL) {
2742 bzero(&sin, sizeof sin);
2743 sin.sin_family = AF_INET;
2744 sin.sin_len = sizeof sin;
2745 sin.sin_addr = inet_makeaddr(np->n_net, 0);
2746 sa = (struct sockaddr *)&sin;
2752 /* The specified sockaddr is a mask. */
2753 if (checkmask(sa) != 0)
2755 bcopy(sa, &net->nt_mask, sa->sa_len);
2756 opt_flags |= OP_HAVEMASK;
2758 /* The specified sockaddr is a network address. */
2759 bcopy(sa, &net->nt_net, sa->sa_len);
2761 /* Get a network name for the export list. */
2764 } else if (getnameinfo(sa, sa->sa_len, netname, sizeof netname,
2765 NULL, 0, NI_NUMERICHOST) == 0) {
2770 if ((net->nt_name = strdup(name)) == NULL)
2774 * Extract a mask from either a "/<masklen>" suffix, or
2775 * from the class of an IPv4 address.
2777 if (opt_flags & OP_MASKLEN) {
2778 preflen = strtol(prefp, NULL, 10);
2779 if (preflen < 0L || preflen == LONG_MAX)
2781 bcopy(sa, &net->nt_mask, sa->sa_len);
2782 if (makemask(&net->nt_mask, (int)preflen) != 0)
2784 opt_flags |= OP_HAVEMASK;
2786 } else if (sa->sa_family == AF_INET &&
2787 (opt_flags & OP_MASK) == 0) {
2790 addr = ((struct sockaddr_in *)sa)->sin_addr.s_addr;
2791 if (IN_CLASSA(addr))
2793 else if (IN_CLASSB(addr))
2795 else if (IN_CLASSC(addr))
2797 else if (IN_CLASSD(addr))
2800 preflen = 32; /* XXX */
2802 bcopy(sa, &net->nt_mask, sa->sa_len);
2803 makemask(&net->nt_mask, (int)preflen);
2804 opt_flags |= OP_HAVEMASK;
2819 * Parse out the next white space separated field
2822 nextfield(char **cp, char **endcp)
2827 while (*p == ' ' || *p == '\t')
2829 if (*p == '\n' || *p == '\0')
2833 while (*p != ' ' && *p != '\t' && *p != '\n' && *p != '\0')
2840 * Get an exports file line. Skip over blank lines and handle line
2848 int totlen, cont_line;
2851 * Loop around ignoring blank lines and getting all continuation lines.
2856 if ((p = fgetln(exp_file, &len)) == NULL)
2861 (*cp == ' ' || *cp == '\t' || *cp == '\n' || *cp == '\\')) {
2871 if (linesize < len + totlen + 1) {
2872 linesize = len + totlen + 1;
2873 line = realloc(line, linesize);
2877 memcpy(line + totlen, p, len);
2879 line[totlen] = '\0';
2880 } while (totlen == 0 || cont_line);
2885 * Parse a description of a credential.
2888 parsecred(char *namelist, struct xucred *cr)
2895 gid_t groups[XU_NGROUPS + 1];
2898 cr->cr_version = XUCRED_VERSION;
2900 * Set up the unprivileged user.
2903 cr->cr_groups[0] = -2;
2906 * Get the user's password table entry.
2908 names = strsep_quote(&namelist, " \t\n");
2909 name = strsep(&names, ":");
2910 /* Bug? name could be NULL here */
2911 if (isdigit(*name) || *name == '-')
2912 pw = getpwuid(atoi(name));
2914 pw = getpwnam(name);
2916 * Credentials specified as those of a user.
2918 if (names == NULL) {
2920 syslog(LOG_ERR, "unknown user: %s", name);
2923 cr->cr_uid = pw->pw_uid;
2924 ngroups = XU_NGROUPS + 1;
2925 if (getgrouplist(pw->pw_name, pw->pw_gid, groups, &ngroups)) {
2926 syslog(LOG_ERR, "too many groups");
2927 ngroups = XU_NGROUPS + 1;
2931 * Compress out duplicate.
2933 cr->cr_ngroups = ngroups - 1;
2934 cr->cr_groups[0] = groups[0];
2935 for (cnt = 2; cnt < ngroups; cnt++)
2936 cr->cr_groups[cnt - 1] = groups[cnt];
2940 * Explicit credential specified as a colon separated list:
2944 cr->cr_uid = pw->pw_uid;
2945 else if (isdigit(*name) || *name == '-')
2946 cr->cr_uid = atoi(name);
2948 syslog(LOG_ERR, "unknown user: %s", name);
2952 while (names != NULL && *names != '\0' && cr->cr_ngroups < XU_NGROUPS) {
2953 name = strsep(&names, ":");
2954 if (isdigit(*name) || *name == '-') {
2955 cr->cr_groups[cr->cr_ngroups++] = atoi(name);
2957 if ((gr = getgrnam(name)) == NULL) {
2958 syslog(LOG_ERR, "unknown group: %s", name);
2961 cr->cr_groups[cr->cr_ngroups++] = gr->gr_gid;
2964 if (names != NULL && *names != '\0' && cr->cr_ngroups == XU_NGROUPS)
2965 syslog(LOG_ERR, "too many groups");
2968 #define STRSIZ (MNTNAMLEN+MNTPATHLEN+50)
2970 * Routines that maintain the remote mounttab
2975 struct mountlist *mlp;
2976 char *host, *dirp, *cp;
2980 if ((mlfile = fopen(_PATH_RMOUNTLIST, "r")) == NULL) {
2981 if (errno == ENOENT)
2984 syslog(LOG_ERR, "can't open %s", _PATH_RMOUNTLIST);
2988 while (fgets(str, STRSIZ, mlfile) != NULL) {
2990 host = strsep(&cp, " \t\n");
2991 dirp = strsep(&cp, " \t\n");
2992 if (host == NULL || dirp == NULL)
2994 mlp = (struct mountlist *)malloc(sizeof (*mlp));
2995 if (mlp == (struct mountlist *)NULL)
2997 strncpy(mlp->ml_host, host, MNTNAMLEN);
2998 mlp->ml_host[MNTNAMLEN] = '\0';
2999 strncpy(mlp->ml_dirp, dirp, MNTPATHLEN);
3000 mlp->ml_dirp[MNTPATHLEN] = '\0';
3002 SLIST_INSERT_HEAD(&mlhead, mlp, next);
3008 del_mlist(char *hostp, char *dirp)
3010 struct mountlist *mlp, *mlp2;
3014 SLIST_FOREACH_SAFE(mlp, &mlhead, next, mlp2) {
3015 if (!strcmp(mlp->ml_host, hostp) &&
3016 (!dirp || !strcmp(mlp->ml_dirp, dirp))) {
3018 SLIST_REMOVE(&mlhead, mlp, mountlist, next);
3023 if ((mlfile = fopen(_PATH_RMOUNTLIST, "w")) == NULL) {
3024 syslog(LOG_ERR,"can't update %s", _PATH_RMOUNTLIST);
3027 SLIST_FOREACH(mlp, &mlhead, next) {
3028 fprintf(mlfile, "%s %s\n", mlp->ml_host, mlp->ml_dirp);
3035 add_mlist(char *hostp, char *dirp)
3037 struct mountlist *mlp;
3040 SLIST_FOREACH(mlp, &mlhead, next) {
3041 if (!strcmp(mlp->ml_host, hostp) && !strcmp(mlp->ml_dirp, dirp))
3045 mlp = (struct mountlist *)malloc(sizeof (*mlp));
3046 if (mlp == (struct mountlist *)NULL)
3048 strncpy(mlp->ml_host, hostp, MNTNAMLEN);
3049 mlp->ml_host[MNTNAMLEN] = '\0';
3050 strncpy(mlp->ml_dirp, dirp, MNTPATHLEN);
3051 mlp->ml_dirp[MNTPATHLEN] = '\0';
3052 SLIST_INSERT_HEAD(&mlhead, mlp, next);
3053 if ((mlfile = fopen(_PATH_RMOUNTLIST, "a")) == NULL) {
3054 syslog(LOG_ERR, "can't update %s", _PATH_RMOUNTLIST);
3057 fprintf(mlfile, "%s %s\n", mlp->ml_host, mlp->ml_dirp);
3062 * Free up a group list.
3065 free_grp(struct grouplist *grp)
3067 if (grp->gr_type == GT_HOST) {
3068 if (grp->gr_ptr.gt_addrinfo != NULL)
3069 freeaddrinfo(grp->gr_ptr.gt_addrinfo);
3070 } else if (grp->gr_type == GT_NET) {
3071 if (grp->gr_ptr.gt_net.nt_name)
3072 free(grp->gr_ptr.gt_net.nt_name);
3079 SYSLOG(int pri, const char *fmt, ...)
3084 vfprintf(stderr, fmt, ap);
3090 * Check options for consistency.
3093 check_options(struct dirlist *dp)
3096 if (v4root_phase == 0 && dp == NULL)
3098 if ((opt_flags & (OP_MAPROOT | OP_MAPALL)) == (OP_MAPROOT | OP_MAPALL)) {
3099 syslog(LOG_ERR, "-mapall and -maproot mutually exclusive");
3102 if ((opt_flags & OP_MASK) && (opt_flags & OP_NET) == 0) {
3103 syslog(LOG_ERR, "-mask requires -network");
3106 if ((opt_flags & OP_NET) && (opt_flags & OP_HAVEMASK) == 0) {
3107 syslog(LOG_ERR, "-network requires mask specification");
3110 if ((opt_flags & OP_MASK) && (opt_flags & OP_MASKLEN)) {
3111 syslog(LOG_ERR, "-mask and /masklen are mutually exclusive");
3114 if (v4root_phase > 0 &&
3116 ~(OP_SEC | OP_MASK | OP_NET | OP_HAVEMASK | OP_MASKLEN)) != 0) {
3117 syslog(LOG_ERR,"only -sec,-net,-mask options allowed on V4:");
3120 if ((opt_flags & OP_ALLDIRS) && dp->dp_left) {
3121 syslog(LOG_ERR, "-alldirs has multiple directories");
3128 * Check an absolute directory path for any symbolic links. Return true
3131 check_dirpath(char *dirp)
3138 while (*cp && ret) {
3141 if (lstat(dirp, &sb) < 0 || !S_ISDIR(sb.st_mode))
3147 if (lstat(dirp, &sb) < 0 || !S_ISDIR(sb.st_mode))
3153 * Make a netmask according to the specified prefix length. The ss_family
3154 * and other non-address fields must be initialised before calling this.
3157 makemask(struct sockaddr_storage *ssp, int bitlen)
3162 if ((p = sa_rawaddr((struct sockaddr *)ssp, &len)) == NULL)
3164 if (bitlen > len * CHAR_BIT)
3167 for (i = 0; i < len; i++) {
3168 bits = MIN(CHAR_BIT, bitlen);
3169 *p++ = (u_char)~0 << (CHAR_BIT - bits);
3176 * Check that the sockaddr is a valid netmask. Returns 0 if the mask
3177 * is acceptable (i.e. of the form 1...10....0).
3180 checkmask(struct sockaddr *sa)
3185 if ((mask = sa_rawaddr(sa, &len)) == NULL)
3188 for (i = 0; i < len; i++)
3189 if (mask[i] != 0xff)
3192 if (~mask[i] & (u_char)(~mask[i] + 1))
3196 for (; i < len; i++)
3203 * Compare two sockaddrs according to a specified mask. Return zero if
3204 * `sa1' matches `sa2' when filtered by the netmask in `samask'.
3205 * If samask is NULL, perform a full comparison.
3208 sacmp(struct sockaddr *sa1, struct sockaddr *sa2, struct sockaddr *samask)
3210 unsigned char *p1, *p2, *mask;
3213 if (sa1->sa_family != sa2->sa_family ||
3214 (p1 = sa_rawaddr(sa1, &len)) == NULL ||
3215 (p2 = sa_rawaddr(sa2, NULL)) == NULL)
3218 switch (sa1->sa_family) {
3220 if (((struct sockaddr_in6 *)sa1)->sin6_scope_id !=
3221 ((struct sockaddr_in6 *)sa2)->sin6_scope_id)
3226 /* Simple binary comparison if no mask specified. */
3228 return (memcmp(p1, p2, len));
3230 /* Set up the mask, and do a mask-based comparison. */
3231 if (sa1->sa_family != samask->sa_family ||
3232 (mask = sa_rawaddr(samask, NULL)) == NULL)
3235 for (i = 0; i < len; i++)
3236 if ((p1[i] & mask[i]) != (p2[i] & mask[i]))
3242 * Return a pointer to the part of the sockaddr that contains the
3243 * raw address, and set *nbytes to its length in bytes. Returns
3244 * NULL if the address family is unknown.
3247 sa_rawaddr(struct sockaddr *sa, int *nbytes) {
3251 switch (sa->sa_family) {
3253 len = sizeof(((struct sockaddr_in *)sa)->sin_addr);
3254 p = &((struct sockaddr_in *)sa)->sin_addr;
3257 len = sizeof(((struct sockaddr_in6 *)sa)->sin6_addr);
3258 p = &((struct sockaddr_in6 *)sa)->sin6_addr;
3271 huphandler(int sig __unused)
3278 terminate(int sig __unused)
3280 pidfile_remove(pfh);
3281 rpcb_unset(MOUNTPROG, MOUNTVERS, NULL);
3282 rpcb_unset(MOUNTPROG, MOUNTVERS3, NULL);