2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
6 * Herb Hasler and Rick Macklem at The University of Guelph.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 4. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 static const char copyright[] =
35 "@(#) Copyright (c) 1989, 1993\n\
36 The Regents of the University of California. All rights reserved.\n";
41 static char sccsid[] = "@(#)mountd.c 8.15 (Berkeley) 5/1/95";
45 #include <sys/cdefs.h>
46 __FBSDID("$FreeBSD$");
48 #include <sys/param.h>
49 #include <sys/fcntl.h>
50 #include <sys/linker.h>
51 #include <sys/module.h>
52 #include <sys/mount.h>
54 #include <sys/sysctl.h>
55 #include <sys/syslog.h>
58 #include <rpc/rpc_com.h>
59 #include <rpc/pmap_clnt.h>
60 #include <rpc/pmap_prot.h>
61 #include <rpcsvc/mount.h>
62 #include <nfs/nfsproto.h>
63 #include <nfs/nfssvc.h>
64 #include <nfsserver/nfs.h>
66 #include <fs/nfs/nfsport.h>
68 #include <arpa/inet.h>
83 #include "pathnames.h"
91 * Structures for keeping the mount list and export list
94 struct mountlist *ml_next;
95 char ml_host[MNTNAMLEN+1];
96 char ml_dirp[MNTPATHLEN+1];
100 struct dirlist *dp_left;
101 struct dirlist *dp_right;
103 struct hostlist *dp_hosts; /* List of hosts this dir exported to */
104 char dp_dirp[1]; /* Actually malloc'd to size of dir */
107 #define DP_DEFSET 0x1
108 #define DP_HOSTSET 0x2
111 struct exportlist *ex_next;
112 struct dirlist *ex_dirl;
113 struct dirlist *ex_defdir;
118 int ex_numsecflavors;
119 int ex_secflavors[MAXSECFLAVORS];
120 int ex_defnumsecflavors;
121 int ex_defsecflavors[MAXSECFLAVORS];
124 #define EX_LINKED 0x1
127 struct sockaddr_storage nt_net;
128 struct sockaddr_storage nt_mask;
133 struct addrinfo *gt_addrinfo;
134 struct netmsk gt_net;
139 union grouptypes gr_ptr;
140 struct grouplist *gr_next;
141 int gr_numsecflavors;
142 int gr_secflavors[MAXSECFLAVORS];
148 #define GT_DEFAULT 0x3
149 #define GT_IGNORE 0x5
152 int ht_flag; /* Uses DP_xx bits */
153 struct grouplist *ht_grp;
154 struct hostlist *ht_next;
161 int fhr_numsecflavors;
165 #define GETPORT_MAXTRY 20 /* Max tries to get a port # */
168 char *add_expdir(struct dirlist **, char *, int);
169 void add_dlist(struct dirlist **, struct dirlist *,
170 struct grouplist *, int, struct exportlist *);
171 void add_mlist(char *, char *);
172 int check_dirpath(char *);
173 int check_options(struct dirlist *);
174 int checkmask(struct sockaddr *sa);
175 int chk_host(struct dirlist *, struct sockaddr *, int *, int *, int *,
177 static char *strsep_quote(char **stringp, const char *delim);
178 static int create_service(struct netconfig *nconf);
179 static void complete_service(struct netconfig *nconf, char *port_str);
180 static void clearout_service(void);
181 void del_mlist(char *hostp, char *dirp);
182 struct dirlist *dirp_search(struct dirlist *, char *);
183 int do_mount(struct exportlist *, struct grouplist *, int,
184 struct xucred *, char *, int, struct statfs *);
185 int do_opt(char **, char **, struct exportlist *, struct grouplist *,
186 int *, int *, struct xucred *);
187 struct exportlist *ex_search(fsid_t *);
188 struct exportlist *get_exp(void);
189 void free_dir(struct dirlist *);
190 void free_exp(struct exportlist *);
191 void free_grp(struct grouplist *);
192 void free_host(struct hostlist *);
193 void get_exportlist(void);
194 int get_host(char *, struct grouplist *, struct grouplist *);
195 struct hostlist *get_ht(void);
197 void get_mountlist(void);
198 int get_net(char *, struct netmsk *, int);
199 void getexp_err(struct exportlist *, struct grouplist *);
200 struct grouplist *get_grp(void);
201 void hang_dirp(struct dirlist *, struct grouplist *,
202 struct exportlist *, int);
203 void huphandler(int sig);
204 int makemask(struct sockaddr_storage *ssp, int bitlen);
205 void mntsrv(struct svc_req *, SVCXPRT *);
206 void nextfield(char **, char **);
207 void out_of_mem(void);
208 void parsecred(char *, struct xucred *);
209 int parsesec(char *, struct exportlist *);
210 int put_exlist(struct dirlist *, XDR *, struct dirlist *, int *, int);
211 void *sa_rawaddr(struct sockaddr *sa, int *nbytes);
212 int sacmp(struct sockaddr *sa1, struct sockaddr *sa2,
213 struct sockaddr *samask);
214 int scan_tree(struct dirlist *, struct sockaddr *);
215 static void usage(void);
216 int xdr_dir(XDR *, char *);
217 int xdr_explist(XDR *, caddr_t);
218 int xdr_explist_brief(XDR *, caddr_t);
219 int xdr_explist_common(XDR *, caddr_t, int);
220 int xdr_fhs(XDR *, caddr_t);
221 int xdr_mlist(XDR *, caddr_t);
224 struct exportlist *exphead;
225 struct mountlist *mlhead;
226 struct grouplist *grphead;
227 char *exnames_default[2] = { _PATH_EXPORTS, NULL };
230 struct xucred def_anon = {
238 int resvport_only = 1;
245 char *svcport_str = NULL;
246 static int mallocd_svcport = 0;
248 static int sock_fdcnt;
249 static int sock_fdpos;
250 static int suspend_nfsd = 0;
253 static int have_v6 = 1;
255 int v4root_phase = 0;
256 char v4root_dirpath[PATH_MAX + 1];
257 int run_v4server = 1;
258 int has_publicfh = 0;
260 struct pidfh *pfh = NULL;
261 /* Bits for opt_flags above */
262 #define OP_MAPROOT 0x01
263 #define OP_MAPALL 0x02
267 #define OP_ALLDIRS 0x40
268 #define OP_HAVEMASK 0x80 /* A mask was specified or inferred. */
269 #define OP_QUIET 0x100
270 #define OP_MASKLEN 0x200
275 void SYSLOG(int, const char *, ...) __printflike(2, 3);
276 #define syslog SYSLOG
282 * Similar to strsep(), but it allows for quoted strings
283 * and escaped characters.
285 * It returns the string (or NULL, if *stringp is NULL),
286 * which is a de-quoted version of the string if necessary.
288 * It modifies *stringp in place.
291 strsep_quote(char **stringp, const char *delim)
293 char *srcptr, *dstptr, *retval;
296 if (stringp == NULL || *stringp == NULL)
299 srcptr = dstptr = retval = *stringp;
303 * We're looking for several edge cases here.
304 * First: if we're in quote state (quot != 0),
305 * then we ignore the delim characters, but otherwise
306 * process as normal, unless it is the quote character.
307 * Second: if the current character is a backslash,
308 * we take the next character as-is, without checking
309 * for delim, quote, or backslash. Exception: if the
310 * next character is a NUL, that's the end of the string.
311 * Third: if the character is a quote character, we toggle
313 * Otherwise: check the current character for NUL, or
314 * being in delim, and end the string if either is true.
316 if (*srcptr == '\\') {
319 * The edge case here is if the next character
320 * is NUL, we want to stop processing. But if
321 * it's not NUL, then we simply want to copy it.
324 *dstptr++ = *srcptr++;
328 if (quot == 0 && (*srcptr == '\'' || *srcptr == '"')) {
332 if (quot && *srcptr == quot) {
333 /* End of the quoted part */
338 if (!quot && strchr(delim, *srcptr))
340 *dstptr++ = *srcptr++;
343 *dstptr = 0; /* Terminate the string */
344 *stringp = (*srcptr == '\0') ? NULL : srcptr + 1;
349 * Mountd server for NFS mount protocol as described in:
350 * NFS: Network File System Protocol Specification, RFC1094, Appendix A
351 * The optional arguments are the exports file name
352 * default: _PATH_EXPORTS
353 * and "-n" to allow nonroot mount.
356 main(int argc, char **argv)
359 struct netconfig *nconf;
360 char *endptr, **hosts_bak;
365 int maxrec = RPC_MAXDATASIZE;
366 int attempt_cnt, port_len, port_pos, ret;
369 /* Check that another mountd isn't already running. */
370 pfh = pidfile_open(_PATH_MOUNTDPID, 0600, &otherpid);
373 errx(1, "mountd already running, pid: %d.", otherpid);
374 warn("cannot open or create pidfile");
377 s = socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP);
383 while ((c = getopt(argc, argv, "2deh:lnop:rS")) != -1)
389 /* now a no-op, since this is the default */
398 debug = debug ? 0 : 1;
408 svcport = (in_port_t)strtoul(optarg, &endptr, 10);
409 if (endptr == NULL || *endptr != '\0' ||
410 svcport == 0 || svcport >= IPPORT_MAX)
412 svcport_str = strdup(optarg);
417 hosts_bak = realloc(hosts, nhosts * sizeof(char *));
418 if (hosts_bak == NULL) {
420 for (k = 0; k < nhosts; k++)
427 hosts[nhosts - 1] = strdup(optarg);
428 if (hosts[nhosts - 1] == NULL) {
429 for (k = 0; k < (nhosts - 1); k++)
443 * Unless the "-o" option was specified, try and run "nfsd".
444 * If "-o" was specified, try and run "nfsserver".
446 if (run_v4server > 0) {
447 if (modfind("nfsd") < 0) {
448 /* Not present in kernel, try loading it */
449 if (kldload("nfsd") < 0 || modfind("nfsd") < 0)
450 errx(1, "NFS server is not available");
452 } else if (modfind("nfsserver") < 0) {
453 /* Not present in kernel, try loading it */
454 if (kldload("nfsserver") < 0 || modfind("nfsserver") < 0)
455 errx(1, "NFS server is not available");
460 grphead = (struct grouplist *)NULL;
461 exphead = (struct exportlist *)NULL;
462 mlhead = (struct mountlist *)NULL;
466 exnames = exnames_default;
467 openlog("mountd", LOG_PID, LOG_DAEMON);
469 warnx("getting export list");
472 warnx("getting mount list");
478 signal(SIGINT, SIG_IGN);
479 signal(SIGQUIT, SIG_IGN);
481 signal(SIGHUP, huphandler);
482 signal(SIGTERM, terminate);
483 signal(SIGPIPE, SIG_IGN);
487 rpcb_unset(MOUNTPROG, MOUNTVERS, NULL);
488 rpcb_unset(MOUNTPROG, MOUNTVERS3, NULL);
489 rpc_control(RPC_SVC_CONNMAXREC_SET, &maxrec);
491 if (!resvport_only) {
492 if (run_v4server != 0) {
493 if (sysctlbyname("vfs.nfsd.nfs_privport", NULL, NULL,
494 &resvport_only, sizeof(resvport_only)) != 0 &&
496 syslog(LOG_ERR, "sysctl: %m");
500 if (sysctlbyname("vfs.nfsrv.nfs_privport", NULL, NULL,
501 &resvport_only, sizeof(resvport_only)) != 0 &&
503 syslog(LOG_ERR, "sysctl: %m");
510 * If no hosts were specified, add a wildcard entry to bind to
511 * INADDR_ANY. Otherwise make sure 127.0.0.1 and ::1 are added to the
515 hosts = malloc(sizeof(char**));
523 hosts_bak = realloc(hosts, (nhosts + 2) *
525 if (hosts_bak == NULL) {
526 for (k = 0; k < nhosts; k++)
533 hosts[nhosts - 2] = "::1";
535 hosts_bak = realloc(hosts, (nhosts + 1) * sizeof(char *));
536 if (hosts_bak == NULL) {
537 for (k = 0; k < nhosts; k++)
547 hosts[nhosts - 1] = "127.0.0.1";
555 nc_handle = setnetconfig();
556 while ((nconf = getnetconfig(nc_handle))) {
557 if (nconf->nc_flag & NC_VISIBLE) {
558 if (have_v6 == 0 && strcmp(nconf->nc_protofmly,
562 ret = create_service(nconf);
564 /* Ignore this call */
568 * Failed to bind port, so close off
569 * all sockets created and try again
570 * if the port# was dynamically
571 * assigned via bind(2).
574 if (mallocd_svcport != 0 &&
575 attempt_cnt < GETPORT_MAXTRY) {
582 "bindresvport_sa: %m");
586 /* Start over at the first service. */
590 nc_handle = setnetconfig();
592 } else if (mallocd_svcport != 0 &&
593 attempt_cnt == GETPORT_MAXTRY) {
595 * For the last attempt, allow
596 * different port #s for each nconf
597 * by saving the svcport_str and
598 * setting it back to NULL.
600 port_list = realloc(port_list,
601 (port_len + 1) * sizeof(char *));
602 if (port_list == NULL)
604 port_list[port_len++] = svcport_str;
613 * Successfully bound the ports, so call complete_service() to
614 * do the rest of the setup on the service(s).
618 nc_handle = setnetconfig();
619 while ((nconf = getnetconfig(nc_handle))) {
620 if (nconf->nc_flag & NC_VISIBLE) {
621 if (have_v6 == 0 && strcmp(nconf->nc_protofmly,
624 } else if (port_list != NULL) {
625 if (port_pos >= port_len) {
626 syslog(LOG_ERR, "too many port#s");
629 complete_service(nconf, port_list[port_pos++]);
631 complete_service(nconf, svcport_str);
634 endnetconfig(nc_handle);
636 if (port_list != NULL) {
637 for (port_pos = 0; port_pos < port_len; port_pos++)
638 free(port_list[port_pos]);
643 syslog(LOG_ERR, "could not create any services");
647 /* Expand svc_run() here so that we can call get_exportlist(). */
654 switch (select(svc_maxfd + 1, &readfds, NULL, NULL, NULL)) {
658 syslog(LOG_ERR, "mountd died: select: %m");
663 svc_getreqset(&readfds);
669 * This routine creates and binds sockets on the appropriate
670 * addresses. It gets called one time for each transport.
671 * It returns 0 upon success, 1 for ingore the call and -1 to indicate
672 * bind failed with EADDRINUSE.
673 * Any file descriptors that have been created are stored in sock_fd and
674 * the total count of them is maintained in sock_fdcnt.
677 create_service(struct netconfig *nconf)
679 struct addrinfo hints, *res = NULL;
680 struct sockaddr_in *sin;
681 struct sockaddr_in6 *sin6;
682 struct __rpc_sockinfo si;
688 u_int32_t host_addr[4]; /* IPv4 or IPv6 */
691 if ((nconf->nc_semantics != NC_TPI_CLTS) &&
692 (nconf->nc_semantics != NC_TPI_COTS) &&
693 (nconf->nc_semantics != NC_TPI_COTS_ORD))
694 return (1); /* not my type */
697 * XXX - using RPC library internal functions.
699 if (!__rpc_nconf2sockinfo(nconf, &si)) {
700 syslog(LOG_ERR, "cannot get information for %s",
705 /* Get mountd's address on this transport */
706 memset(&hints, 0, sizeof hints);
707 hints.ai_family = si.si_af;
708 hints.ai_socktype = si.si_socktype;
709 hints.ai_protocol = si.si_proto;
712 * Bind to specific IPs if asked to
715 while (nhostsbak > 0) {
717 sock_fd = realloc(sock_fd, (sock_fdcnt + 1) * sizeof(int));
720 sock_fd[sock_fdcnt++] = -1; /* Set invalid for now. */
723 hints.ai_flags = AI_PASSIVE;
726 * XXX - using RPC library internal functions.
728 if ((fd = __rpc_nconf2fd(nconf)) < 0) {
730 if (errno == EAFNOSUPPORT &&
731 nconf->nc_semantics != NC_TPI_CLTS)
734 syslog(non_fatal ? LOG_DEBUG : LOG_ERR,
735 "cannot create socket for %s", nconf->nc_netid);
741 switch (hints.ai_family) {
743 if (inet_pton(AF_INET, hosts[nhostsbak],
745 hints.ai_flags |= AI_NUMERICHOST;
748 * Skip if we have an AF_INET6 address.
750 if (inet_pton(AF_INET6, hosts[nhostsbak],
758 if (inet_pton(AF_INET6, hosts[nhostsbak],
760 hints.ai_flags |= AI_NUMERICHOST;
763 * Skip if we have an AF_INET address.
765 if (inet_pton(AF_INET, hosts[nhostsbak],
773 * We're doing host-based access checks here, so don't
774 * allow v4-in-v6 to confuse things. The kernel will
775 * disable it by default on NFS sockets too.
777 if (setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &one,
780 "can't disable v4-in-v6 on IPv6 socket");
789 * If no hosts were specified, just bind to INADDR_ANY
791 if (strcmp("*", hosts[nhostsbak]) == 0) {
792 if (svcport_str == NULL) {
793 res = malloc(sizeof(struct addrinfo));
797 res->ai_flags = hints.ai_flags;
798 res->ai_family = hints.ai_family;
799 res->ai_protocol = hints.ai_protocol;
800 switch (res->ai_family) {
802 sin = malloc(sizeof(struct sockaddr_in));
805 sin->sin_family = AF_INET;
806 sin->sin_port = htons(0);
807 sin->sin_addr.s_addr = htonl(INADDR_ANY);
808 res->ai_addr = (struct sockaddr*) sin;
809 res->ai_addrlen = (socklen_t)
810 sizeof(struct sockaddr_in);
813 sin6 = malloc(sizeof(struct sockaddr_in6));
816 sin6->sin6_family = AF_INET6;
817 sin6->sin6_port = htons(0);
818 sin6->sin6_addr = in6addr_any;
819 res->ai_addr = (struct sockaddr*) sin6;
820 res->ai_addrlen = (socklen_t)
821 sizeof(struct sockaddr_in6);
824 syslog(LOG_ERR, "bad addr fam %d",
829 if ((aicode = getaddrinfo(NULL, svcport_str,
830 &hints, &res)) != 0) {
832 "cannot get local address for %s: %s",
834 gai_strerror(aicode));
840 if ((aicode = getaddrinfo(hosts[nhostsbak], svcport_str,
841 &hints, &res)) != 0) {
843 "cannot get local address for %s: %s",
844 nconf->nc_netid, gai_strerror(aicode));
851 sock_fd[sock_fdcnt - 1] = fd;
853 /* Now, attempt the bind. */
854 r = bindresvport_sa(fd, res->ai_addr);
856 if (errno == EADDRINUSE && mallocd_svcport != 0) {
857 if (mallocd_res != 0) {
864 syslog(LOG_ERR, "bindresvport_sa: %m");
868 if (svcport_str == NULL) {
869 svcport_str = malloc(NI_MAXSERV * sizeof(char));
870 if (svcport_str == NULL)
874 if (getnameinfo(res->ai_addr,
875 res->ai_addr->sa_len, NULL, NI_MAXHOST,
876 svcport_str, NI_MAXSERV * sizeof(char),
877 NI_NUMERICHOST | NI_NUMERICSERV))
878 errx(1, "Cannot get port number");
880 if (mallocd_res != 0) {
891 * Called after all the create_service() calls have succeeded, to complete
892 * the setup and registration.
895 complete_service(struct netconfig *nconf, char *port_str)
897 struct addrinfo hints, *res = NULL;
898 struct __rpc_sockinfo si;
899 struct netbuf servaddr;
900 SVCXPRT *transp = NULL;
901 int aicode, fd, nhostsbak;
904 if ((nconf->nc_semantics != NC_TPI_CLTS) &&
905 (nconf->nc_semantics != NC_TPI_COTS) &&
906 (nconf->nc_semantics != NC_TPI_COTS_ORD))
907 return; /* not my type */
910 * XXX - using RPC library internal functions.
912 if (!__rpc_nconf2sockinfo(nconf, &si)) {
913 syslog(LOG_ERR, "cannot get information for %s",
919 while (nhostsbak > 0) {
921 if (sock_fdpos >= sock_fdcnt) {
922 /* Should never happen. */
923 syslog(LOG_ERR, "Ran out of socket fd's");
926 fd = sock_fd[sock_fdpos++];
930 if (nconf->nc_semantics != NC_TPI_CLTS)
931 listen(fd, SOMAXCONN);
933 if (nconf->nc_semantics == NC_TPI_CLTS )
934 transp = svc_dg_create(fd, 0, 0);
936 transp = svc_vc_create(fd, RPC_MAXDATASIZE,
939 if (transp != (SVCXPRT *) NULL) {
940 if (!svc_reg(transp, MOUNTPROG, MOUNTVERS, mntsrv,
943 "can't register %s MOUNTVERS service",
946 if (!svc_reg(transp, MOUNTPROG, MOUNTVERS3,
949 "can't register %s MOUNTVERS3 service",
953 syslog(LOG_WARNING, "can't create %s services",
956 if (registered == 0) {
958 memset(&hints, 0, sizeof hints);
959 hints.ai_flags = AI_PASSIVE;
960 hints.ai_family = si.si_af;
961 hints.ai_socktype = si.si_socktype;
962 hints.ai_protocol = si.si_proto;
964 if ((aicode = getaddrinfo(NULL, port_str, &hints,
966 syslog(LOG_ERR, "cannot get local address: %s",
967 gai_strerror(aicode));
971 servaddr.buf = malloc(res->ai_addrlen);
972 memcpy(servaddr.buf, res->ai_addr, res->ai_addrlen);
973 servaddr.len = res->ai_addrlen;
975 rpcb_set(MOUNTPROG, MOUNTVERS, nconf, &servaddr);
976 rpcb_set(MOUNTPROG, MOUNTVERS3, nconf, &servaddr);
985 * Clear out sockets after a failure to bind one of them, so that the
986 * cycle of socket creation/binding can start anew.
989 clearout_service(void)
993 for (i = 0; i < sock_fdcnt; i++) {
994 if (sock_fd[i] >= 0) {
995 shutdown(sock_fd[i], SHUT_RDWR);
1005 "usage: mountd [-2] [-d] [-e] [-l] [-n] [-p <port>] [-r] "
1006 "[-S] [-h <bindip>] [export_file ...]\n");
1011 * The mount rpc service
1014 mntsrv(struct svc_req *rqstp, SVCXPRT *transp)
1016 struct exportlist *ep;
1018 struct fhreturn fhr;
1021 char host[NI_MAXHOST], numerichost[NI_MAXHOST];
1022 int lookup_failed = 1;
1023 struct sockaddr *saddr;
1025 char rpcpath[MNTPATHLEN + 1], dirpath[MAXPATHLEN];
1026 int bad = 0, defset, hostset;
1027 sigset_t sighup_mask;
1028 int numsecflavors, *secflavorsp;
1030 sigemptyset(&sighup_mask);
1031 sigaddset(&sighup_mask, SIGHUP);
1032 saddr = svc_getrpccaller(transp)->buf;
1033 switch (saddr->sa_family) {
1035 sport = ntohs(((struct sockaddr_in6 *)saddr)->sin6_port);
1038 sport = ntohs(((struct sockaddr_in *)saddr)->sin_port);
1041 syslog(LOG_ERR, "request from unknown address family");
1044 lookup_failed = getnameinfo(saddr, saddr->sa_len, host, sizeof host,
1046 getnameinfo(saddr, saddr->sa_len, numerichost,
1047 sizeof numerichost, NULL, 0, NI_NUMERICHOST);
1048 switch (rqstp->rq_proc) {
1050 if (!svc_sendreply(transp, (xdrproc_t)xdr_void, NULL))
1051 syslog(LOG_ERR, "can't send reply");
1054 if (sport >= IPPORT_RESERVED && resvport_only) {
1056 "mount request from %s from unprivileged port",
1058 svcerr_weakauth(transp);
1061 if (!svc_getargs(transp, (xdrproc_t)xdr_dir, rpcpath)) {
1062 syslog(LOG_NOTICE, "undecodable mount request from %s",
1064 svcerr_decode(transp);
1069 * Get the real pathname and make sure it is a directory
1070 * or a regular file if the -r option was specified
1073 if (realpath(rpcpath, dirpath) == NULL ||
1074 stat(dirpath, &stb) < 0 ||
1075 (!S_ISDIR(stb.st_mode) &&
1076 (dir_only || !S_ISREG(stb.st_mode))) ||
1077 statfs(dirpath, &fsb) < 0) {
1078 chdir("/"); /* Just in case realpath doesn't */
1080 "mount request from %s for non existent path %s",
1081 numerichost, dirpath);
1083 warnx("stat failed on %s", dirpath);
1084 bad = ENOENT; /* We will send error reply later */
1087 /* Check in the exports list */
1088 sigprocmask(SIG_BLOCK, &sighup_mask, NULL);
1089 ep = ex_search(&fsb.f_fsid);
1090 hostset = defset = 0;
1091 if (ep && (chk_host(ep->ex_defdir, saddr, &defset, &hostset,
1092 &numsecflavors, &secflavorsp) ||
1093 ((dp = dirp_search(ep->ex_dirl, dirpath)) &&
1094 chk_host(dp, saddr, &defset, &hostset, &numsecflavors,
1096 (defset && scan_tree(ep->ex_defdir, saddr) == 0 &&
1097 scan_tree(ep->ex_dirl, saddr) == 0))) {
1099 if (!svc_sendreply(transp, (xdrproc_t)xdr_long,
1101 syslog(LOG_ERR, "can't send reply");
1102 sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
1105 if (hostset & DP_HOSTSET) {
1106 fhr.fhr_flag = hostset;
1107 fhr.fhr_numsecflavors = numsecflavors;
1108 fhr.fhr_secflavors = secflavorsp;
1110 fhr.fhr_flag = defset;
1111 fhr.fhr_numsecflavors = ep->ex_defnumsecflavors;
1112 fhr.fhr_secflavors = ep->ex_defsecflavors;
1114 fhr.fhr_vers = rqstp->rq_vers;
1115 /* Get the file handle */
1116 memset(&fhr.fhr_fh, 0, sizeof(nfsfh_t));
1117 if (getfh(dirpath, (fhandle_t *)&fhr.fhr_fh) < 0) {
1119 syslog(LOG_ERR, "can't get fh for %s", dirpath);
1120 if (!svc_sendreply(transp, (xdrproc_t)xdr_long,
1122 syslog(LOG_ERR, "can't send reply");
1123 sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
1126 if (!svc_sendreply(transp, (xdrproc_t)xdr_fhs,
1128 syslog(LOG_ERR, "can't send reply");
1130 add_mlist(host, dirpath);
1132 add_mlist(numerichost, dirpath);
1134 warnx("mount successful");
1137 "mount request succeeded from %s for %s",
1138 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;
1280 if (!xdr_bool(xdrsp, &true))
1282 strp = &mlp->ml_host[0];
1283 if (!xdr_string(xdrsp, &strp, MNTNAMLEN))
1285 strp = &mlp->ml_dirp[0];
1286 if (!xdr_string(xdrsp, &strp, MNTPATHLEN))
1290 if (!xdr_bool(xdrsp, &false))
1296 * Xdr conversion for export list
1299 xdr_explist_common(XDR *xdrsp, caddr_t cp __unused, int brief)
1301 struct exportlist *ep;
1304 sigset_t sighup_mask;
1306 sigemptyset(&sighup_mask);
1307 sigaddset(&sighup_mask, SIGHUP);
1308 sigprocmask(SIG_BLOCK, &sighup_mask, NULL);
1312 if (put_exlist(ep->ex_dirl, xdrsp, ep->ex_defdir,
1315 if (ep->ex_defdir && putdef == 0 &&
1316 put_exlist(ep->ex_defdir, xdrsp, (struct dirlist *)NULL,
1321 sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
1322 if (!xdr_bool(xdrsp, &false))
1326 sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL);
1331 * Called from xdr_explist() to traverse the tree and export the
1335 put_exlist(struct dirlist *dp, XDR *xdrsp, struct dirlist *adp, int *putdefp,
1338 struct grouplist *grp;
1339 struct hostlist *hp;
1346 if (put_exlist(dp->dp_left, xdrsp, adp, putdefp, brief))
1348 if (!xdr_bool(xdrsp, &true))
1351 if (!xdr_string(xdrsp, &strp, MNTPATHLEN))
1353 if (adp && !strcmp(dp->dp_dirp, adp->dp_dirp)) {
1358 if (!xdr_bool(xdrsp, &true))
1361 if (!xdr_string(xdrsp, &strp, MNTPATHLEN))
1363 } else if ((dp->dp_flag & DP_DEFSET) == 0 &&
1364 (gotalldir == 0 || (adp->dp_flag & DP_DEFSET) == 0)) {
1368 if (grp->gr_type == GT_HOST) {
1369 if (!xdr_bool(xdrsp, &true))
1371 strp = grp->gr_ptr.gt_addrinfo->ai_canonname;
1372 if (!xdr_string(xdrsp, &strp,
1375 } else if (grp->gr_type == GT_NET) {
1376 if (!xdr_bool(xdrsp, &true))
1378 strp = grp->gr_ptr.gt_net.nt_name;
1379 if (!xdr_string(xdrsp, &strp,
1384 if (gotalldir && hp == (struct hostlist *)NULL) {
1390 if (!xdr_bool(xdrsp, &false))
1392 if (put_exlist(dp->dp_right, xdrsp, adp, putdefp, brief))
1399 xdr_explist(XDR *xdrsp, caddr_t cp)
1402 return xdr_explist_common(xdrsp, cp, 0);
1406 xdr_explist_brief(XDR *xdrsp, caddr_t cp)
1409 return xdr_explist_common(xdrsp, cp, 1);
1417 * Get the export list from one, currently open file
1420 get_exportlist_one(void)
1422 struct exportlist *ep, *ep2;
1423 struct grouplist *grp, *tgrp;
1424 struct exportlist **epp;
1425 struct dirlist *dirhead;
1428 char *cp, *endcp, *dirp, *hst, *usr, *dom, savedc;
1429 int len, has_host, exflags, got_nondir, dirplen, netgrp;
1432 dirhead = (struct dirlist *)NULL;
1433 while (get_line()) {
1435 warnx("got line %s", line);
1437 nextfield(&cp, &endcp);
1446 exflags = MNT_EXPORTED;
1449 ep = (struct exportlist *)NULL;
1453 * Handle the V4 root dir.
1455 if (*cp == 'V' && *(cp + 1) == '4' && *(cp + 2) == ':') {
1457 * V4: just indicates that it is the v4 root point,
1458 * so skip over that and set v4root_phase.
1460 if (v4root_phase > 0) {
1461 syslog(LOG_ERR, "V4:duplicate line, ignored");
1466 nextfield(&cp, &endcp);
1470 * Create new exports list entry
1473 tgrp = grp = get_grp();
1475 if (len > MNTNAMLEN) {
1476 getexp_err(ep, tgrp);
1480 if (ep == (struct exportlist *)NULL) {
1481 getexp_err(ep, tgrp);
1485 warnx("doing opt %s", cp);
1487 if (do_opt(&cp, &endcp, ep, grp, &has_host,
1489 getexp_err(ep, tgrp);
1492 } else if (*cp == '/') {
1495 if (v4root_phase > 1) {
1497 syslog(LOG_ERR, "Multiple V4 dirs");
1498 getexp_err(ep, tgrp);
1502 if (check_dirpath(cp) &&
1503 statfs(cp, &fsb) >= 0) {
1504 if ((fsb.f_flags & MNT_AUTOMOUNTED) != 0)
1505 syslog(LOG_ERR, "Warning: exporting of "
1506 "automounted fs %s not supported", cp);
1508 syslog(LOG_ERR, "dirs must be first");
1509 getexp_err(ep, tgrp);
1512 if (v4root_phase == 1) {
1514 syslog(LOG_ERR, "Multiple V4 dirs");
1515 getexp_err(ep, tgrp);
1518 if (strlen(v4root_dirpath) == 0) {
1519 strlcpy(v4root_dirpath, cp,
1520 sizeof (v4root_dirpath));
1521 } else if (strcmp(v4root_dirpath, cp)
1524 "different V4 dirpath %s", cp);
1525 getexp_err(ep, tgrp);
1534 if (ep->ex_fs.val[0] !=
1535 fsb.f_fsid.val[0] ||
1537 fsb.f_fsid.val[1]) {
1538 getexp_err(ep, tgrp);
1543 * See if this directory is already
1546 ep = ex_search(&fsb.f_fsid);
1547 if (ep == (struct exportlist *)NULL) {
1549 ep->ex_fs = fsb.f_fsid;
1550 ep->ex_fsdir = (char *)malloc
1551 (strlen(fsb.f_mntonname) + 1);
1553 strcpy(ep->ex_fsdir,
1559 "making new ep fs=0x%x,0x%x",
1563 warnx("found ep fs=0x%x,0x%x",
1569 * Add dirpath to export mount point.
1571 dirp = add_expdir(&dirhead, cp, len);
1575 getexp_err(ep, tgrp);
1583 if (ep == (struct exportlist *)NULL) {
1584 getexp_err(ep, tgrp);
1589 * Get the host or netgroup.
1592 netgrp = getnetgrent(&hst, &usr, &dom);
1595 grp->gr_next = get_grp();
1601 "null hostname in netgroup %s, skipping", cp);
1602 grp->gr_type = GT_IGNORE;
1603 } else if (get_host(hst, grp, tgrp)) {
1605 "bad host %s in netgroup %s, skipping", hst, cp);
1606 grp->gr_type = GT_IGNORE;
1608 } else if (get_host(cp, grp, tgrp)) {
1609 syslog(LOG_ERR, "bad host %s, skipping", cp);
1610 grp->gr_type = GT_IGNORE;
1613 } while (netgrp && getnetgrent(&hst, &usr, &dom));
1618 nextfield(&cp, &endcp);
1621 if (check_options(dirhead)) {
1622 getexp_err(ep, tgrp);
1626 grp->gr_type = GT_DEFAULT;
1628 warnx("adding a default entry");
1631 * Don't allow a network export coincide with a list of
1632 * host(s) on the same line.
1634 } else if ((opt_flags & OP_NET) && tgrp->gr_next) {
1635 syslog(LOG_ERR, "network/host conflict");
1636 getexp_err(ep, tgrp);
1640 * If an export list was specified on this line, make sure
1641 * that we have at least one valid entry, otherwise skip it.
1645 while (grp && grp->gr_type == GT_IGNORE)
1648 getexp_err(ep, tgrp);
1653 if (v4root_phase == 1) {
1654 syslog(LOG_ERR, "V4:root, no dirp, ignored");
1655 getexp_err(ep, tgrp);
1660 * Loop through hosts, pushing the exports into the kernel.
1661 * After loop, tgrp points to the start of the list and
1662 * grp points to the last entry in the list.
1666 if (do_mount(ep, grp, exflags, &anon, dirp, dirplen,
1668 getexp_err(ep, tgrp);
1671 } while (grp->gr_next && (grp = grp->gr_next));
1674 * For V4: don't enter in mount lists.
1676 if (v4root_phase > 0 && v4root_phase <= 2) {
1678 * Since these structures aren't used by mountd,
1683 while (tgrp != NULL) {
1685 tgrp = tgrp->gr_next;
1692 * Success. Update the data structures.
1695 hang_dirp(dirhead, tgrp, ep, opt_flags);
1696 grp->gr_next = grphead;
1699 hang_dirp(dirhead, (struct grouplist *)NULL, ep,
1703 dirhead = (struct dirlist *)NULL;
1704 if ((ep->ex_flag & EX_LINKED) == 0) {
1709 * Insert in the list in alphabetical order.
1711 while (ep2 && strcmp(ep2->ex_fsdir, ep->ex_fsdir) < 0) {
1712 epp = &ep2->ex_next;
1718 ep->ex_flag |= EX_LINKED;
1724 dirhead = (struct dirlist *)NULL;
1730 * Get the export list from all specified files
1733 get_exportlist(void)
1735 struct exportlist *ep, *ep2;
1736 struct grouplist *grp, *tgrp;
1737 struct export_args export;
1739 struct statfs *fsp, *mntbufp;
1740 struct xvfsconf vfc;
1745 struct nfsex_args eargs;
1747 if (suspend_nfsd != 0)
1748 (void)nfssvc(NFSSVC_SUSPENDNFSD, NULL);
1749 v4root_dirpath[0] = '\0';
1750 bzero(&export, sizeof(export));
1751 export.ex_flags = MNT_DELEXPORT;
1754 bzero(errmsg, sizeof(errmsg));
1757 * First, get rid of the old list
1765 exphead = (struct exportlist *)NULL;
1773 grphead = (struct grouplist *)NULL;
1776 * and the old V4 root dir.
1778 bzero(&eargs, sizeof (eargs));
1779 eargs.export.ex_flags = MNT_DELEXPORT;
1780 if (run_v4server > 0 &&
1781 nfssvc(NFSSVC_V4ROOTEXPORT, (caddr_t)&eargs) < 0 &&
1783 syslog(LOG_ERR, "Can't delete exports for V4:");
1786 * and clear flag that notes if a public fh has been exported.
1791 * And delete exports that are in the kernel for all local
1793 * XXX: Should know how to handle all local exportable filesystems.
1795 num = getmntinfo(&mntbufp, MNT_NOWAIT);
1798 build_iovec(&iov, &iovlen, "fstype", NULL, 0);
1799 build_iovec(&iov, &iovlen, "fspath", NULL, 0);
1800 build_iovec(&iov, &iovlen, "from", NULL, 0);
1801 build_iovec(&iov, &iovlen, "update", NULL, 0);
1802 build_iovec(&iov, &iovlen, "export", &export, sizeof(export));
1803 build_iovec(&iov, &iovlen, "errmsg", errmsg, sizeof(errmsg));
1806 for (i = 0; i < num; i++) {
1808 if (getvfsbyname(fsp->f_fstypename, &vfc) != 0) {
1809 syslog(LOG_ERR, "getvfsbyname() failed for %s",
1815 * We do not need to delete "export" flag from
1816 * filesystems that do not have it set.
1818 if (!(fsp->f_flags & MNT_EXPORTED))
1821 * Do not delete export for network filesystem by
1822 * passing "export" arg to nmount().
1823 * It only makes sense to do this for local filesystems.
1825 if (vfc.vfc_flags & VFCF_NETWORK)
1828 iov[1].iov_base = fsp->f_fstypename;
1829 iov[1].iov_len = strlen(fsp->f_fstypename) + 1;
1830 iov[3].iov_base = fsp->f_mntonname;
1831 iov[3].iov_len = strlen(fsp->f_mntonname) + 1;
1832 iov[5].iov_base = fsp->f_mntfromname;
1833 iov[5].iov_len = strlen(fsp->f_mntfromname) + 1;
1837 * EXDEV is returned when path exists but is not a
1838 * mount point. May happens if raced with unmount.
1840 if (nmount(iov, iovlen, fsp->f_flags) < 0 &&
1841 errno != ENOENT && errno != ENOTSUP && errno != EXDEV) {
1843 "can't delete exports for %s: %m %s",
1844 fsp->f_mntonname, errmsg);
1849 /* Free strings allocated by strdup() in getmntopts.c */
1850 free(iov[0].iov_base); /* fstype */
1851 free(iov[2].iov_base); /* fspath */
1852 free(iov[4].iov_base); /* from */
1853 free(iov[6].iov_base); /* update */
1854 free(iov[8].iov_base); /* export */
1855 free(iov[10].iov_base); /* errmsg */
1857 /* free iov, allocated by realloc() */
1863 * Read in the exports file and build the list, calling
1864 * nmount() as we go along to push the export rules into the kernel.
1867 for (i = 0; exnames[i] != NULL; i++) {
1869 warnx("reading exports from %s", exnames[i]);
1870 if ((exp_file = fopen(exnames[i], "r")) == NULL) {
1871 syslog(LOG_WARNING, "can't open %s", exnames[i]);
1874 get_exportlist_one();
1879 syslog(LOG_ERR, "can't open any exports file");
1884 * If there was no public fh, clear any previous one set.
1886 if (run_v4server > 0 && has_publicfh == 0)
1887 (void) nfssvc(NFSSVC_NOPUBLICFH, NULL);
1889 /* Resume the nfsd. If they weren't suspended, this is harmless. */
1890 (void)nfssvc(NFSSVC_RESUMENFSD, NULL);
1894 * Allocate an export list element
1899 struct exportlist *ep;
1901 ep = (struct exportlist *)calloc(1, sizeof (struct exportlist));
1902 if (ep == (struct exportlist *)NULL)
1908 * Allocate a group list element
1913 struct grouplist *gp;
1915 gp = (struct grouplist *)calloc(1, sizeof (struct grouplist));
1916 if (gp == (struct grouplist *)NULL)
1922 * Clean up upon an error in get_exportlist().
1925 getexp_err(struct exportlist *ep, struct grouplist *grp)
1927 struct grouplist *tgrp;
1929 if (!(opt_flags & OP_QUIET))
1930 syslog(LOG_ERR, "bad exports list line %s", line);
1931 if (ep && (ep->ex_flag & EX_LINKED) == 0)
1941 * Search the export list for a matching fs.
1944 ex_search(fsid_t *fsid)
1946 struct exportlist *ep;
1950 if (ep->ex_fs.val[0] == fsid->val[0] &&
1951 ep->ex_fs.val[1] == fsid->val[1])
1959 * Add a directory path to the list.
1962 add_expdir(struct dirlist **dpp, char *cp, int len)
1966 dp = (struct dirlist *)malloc(sizeof (struct dirlist) + len);
1967 if (dp == (struct dirlist *)NULL)
1970 dp->dp_right = (struct dirlist *)NULL;
1972 dp->dp_hosts = (struct hostlist *)NULL;
1973 strcpy(dp->dp_dirp, cp);
1975 return (dp->dp_dirp);
1979 * Hang the dir list element off the dirpath binary tree as required
1980 * and update the entry for host.
1983 hang_dirp(struct dirlist *dp, struct grouplist *grp, struct exportlist *ep,
1986 struct hostlist *hp;
1987 struct dirlist *dp2;
1989 if (flags & OP_ALLDIRS) {
1994 if (grp == (struct grouplist *)NULL) {
1995 ep->ex_defdir->dp_flag |= DP_DEFSET;
1996 /* Save the default security flavors list. */
1997 ep->ex_defnumsecflavors = ep->ex_numsecflavors;
1998 if (ep->ex_numsecflavors > 0)
1999 memcpy(ep->ex_defsecflavors, ep->ex_secflavors,
2000 sizeof(ep->ex_secflavors));
2001 } else while (grp) {
2004 hp->ht_next = ep->ex_defdir->dp_hosts;
2005 ep->ex_defdir->dp_hosts = hp;
2006 /* Save the security flavors list for this host set. */
2007 grp->gr_numsecflavors = ep->ex_numsecflavors;
2008 if (ep->ex_numsecflavors > 0)
2009 memcpy(grp->gr_secflavors, ep->ex_secflavors,
2010 sizeof(ep->ex_secflavors));
2016 * Loop through the directories adding them to the tree.
2020 add_dlist(&ep->ex_dirl, dp, grp, flags, ep);
2027 * Traverse the binary tree either updating a node that is already there
2028 * for the new directory or adding the new node.
2031 add_dlist(struct dirlist **dpp, struct dirlist *newdp, struct grouplist *grp,
2032 int flags, struct exportlist *ep)
2035 struct hostlist *hp;
2040 cmp = strcmp(dp->dp_dirp, newdp->dp_dirp);
2042 add_dlist(&dp->dp_left, newdp, grp, flags, ep);
2044 } else if (cmp < 0) {
2045 add_dlist(&dp->dp_right, newdp, grp, flags, ep);
2048 free((caddr_t)newdp);
2051 dp->dp_left = (struct dirlist *)NULL;
2057 * Hang all of the host(s) off of the directory point.
2062 hp->ht_next = dp->dp_hosts;
2064 /* Save the security flavors list for this host set. */
2065 grp->gr_numsecflavors = ep->ex_numsecflavors;
2066 if (ep->ex_numsecflavors > 0)
2067 memcpy(grp->gr_secflavors, ep->ex_secflavors,
2068 sizeof(ep->ex_secflavors));
2072 dp->dp_flag |= DP_DEFSET;
2073 /* Save the default security flavors list. */
2074 ep->ex_defnumsecflavors = ep->ex_numsecflavors;
2075 if (ep->ex_numsecflavors > 0)
2076 memcpy(ep->ex_defsecflavors, ep->ex_secflavors,
2077 sizeof(ep->ex_secflavors));
2082 * Search for a dirpath on the export point.
2085 dirp_search(struct dirlist *dp, char *dirp)
2090 cmp = strcmp(dp->dp_dirp, dirp);
2092 return (dirp_search(dp->dp_left, dirp));
2094 return (dirp_search(dp->dp_right, dirp));
2102 * Scan for a host match in a directory tree.
2105 chk_host(struct dirlist *dp, struct sockaddr *saddr, int *defsetp,
2106 int *hostsetp, int *numsecflavors, int **secflavorsp)
2108 struct hostlist *hp;
2109 struct grouplist *grp;
2110 struct addrinfo *ai;
2113 if (dp->dp_flag & DP_DEFSET)
2114 *defsetp = dp->dp_flag;
2118 switch (grp->gr_type) {
2120 ai = grp->gr_ptr.gt_addrinfo;
2121 for (; ai; ai = ai->ai_next) {
2122 if (!sacmp(ai->ai_addr, saddr, NULL)) {
2124 (hp->ht_flag | DP_HOSTSET);
2125 if (numsecflavors != NULL) {
2127 grp->gr_numsecflavors;
2136 if (!sacmp(saddr, (struct sockaddr *)
2137 &grp->gr_ptr.gt_net.nt_net,
2139 &grp->gr_ptr.gt_net.nt_mask)) {
2140 *hostsetp = (hp->ht_flag | DP_HOSTSET);
2141 if (numsecflavors != NULL) {
2143 grp->gr_numsecflavors;
2158 * Scan tree for a host that matches the address.
2161 scan_tree(struct dirlist *dp, struct sockaddr *saddr)
2163 int defset, hostset;
2166 if (scan_tree(dp->dp_left, saddr))
2168 if (chk_host(dp, saddr, &defset, &hostset, NULL, NULL))
2170 if (scan_tree(dp->dp_right, saddr))
2177 * Traverse the dirlist tree and free it up.
2180 free_dir(struct dirlist *dp)
2184 free_dir(dp->dp_left);
2185 free_dir(dp->dp_right);
2186 free_host(dp->dp_hosts);
2192 * Parse a colon separated list of security flavors
2195 parsesec(char *seclist, struct exportlist *ep)
2200 ep->ex_numsecflavors = 0;
2202 cp = strchr(seclist, ':');
2208 if (!strcmp(seclist, "sys"))
2210 else if (!strcmp(seclist, "krb5"))
2211 flavor = RPCSEC_GSS_KRB5;
2212 else if (!strcmp(seclist, "krb5i"))
2213 flavor = RPCSEC_GSS_KRB5I;
2214 else if (!strcmp(seclist, "krb5p"))
2215 flavor = RPCSEC_GSS_KRB5P;
2219 syslog(LOG_ERR, "bad sec flavor: %s", seclist);
2222 if (ep->ex_numsecflavors == MAXSECFLAVORS) {
2225 syslog(LOG_ERR, "too many sec flavors: %s", seclist);
2228 ep->ex_secflavors[ep->ex_numsecflavors] = flavor;
2229 ep->ex_numsecflavors++;
2241 * Parse the option string and update fields.
2242 * Option arguments may either be -<option>=<value> or
2246 do_opt(char **cpp, char **endcpp, struct exportlist *ep, struct grouplist *grp,
2247 int *has_hostp, int *exflagsp, struct xucred *cr)
2249 char *cpoptarg, *cpoptend;
2250 char *cp, *endcp, *cpopt, savedc, savedc2;
2251 int allflag, usedarg;
2259 while (cpopt && *cpopt) {
2262 if ((cpoptend = strchr(cpopt, ','))) {
2264 if ((cpoptarg = strchr(cpopt, '=')))
2267 if ((cpoptarg = strchr(cpopt, '=')))
2271 nextfield(&cp, &endcp);
2273 if (endcp > cp && *cp != '-') {
2281 if (!strcmp(cpopt, "ro") || !strcmp(cpopt, "o")) {
2282 *exflagsp |= MNT_EXRDONLY;
2283 } else if (cpoptarg && (!strcmp(cpopt, "maproot") ||
2284 !(allflag = strcmp(cpopt, "mapall")) ||
2285 !strcmp(cpopt, "root") || !strcmp(cpopt, "r"))) {
2287 parsecred(cpoptarg, cr);
2289 *exflagsp |= MNT_EXPORTANON;
2290 opt_flags |= OP_MAPALL;
2292 opt_flags |= OP_MAPROOT;
2293 } else if (cpoptarg && (!strcmp(cpopt, "mask") ||
2294 !strcmp(cpopt, "m"))) {
2295 if (get_net(cpoptarg, &grp->gr_ptr.gt_net, 1)) {
2296 syslog(LOG_ERR, "bad mask: %s", cpoptarg);
2300 opt_flags |= OP_MASK;
2301 } else if (cpoptarg && (!strcmp(cpopt, "network") ||
2302 !strcmp(cpopt, "n"))) {
2303 if (strchr(cpoptarg, '/') != NULL) {
2305 fprintf(stderr, "setting OP_MASKLEN\n");
2306 opt_flags |= OP_MASKLEN;
2308 if (grp->gr_type != GT_NULL) {
2309 syslog(LOG_ERR, "network/host conflict");
2311 } else if (get_net(cpoptarg, &grp->gr_ptr.gt_net, 0)) {
2312 syslog(LOG_ERR, "bad net: %s", cpoptarg);
2315 grp->gr_type = GT_NET;
2318 opt_flags |= OP_NET;
2319 } else if (!strcmp(cpopt, "alldirs")) {
2320 opt_flags |= OP_ALLDIRS;
2321 } else if (!strcmp(cpopt, "public")) {
2322 *exflagsp |= MNT_EXPUBLIC;
2323 } else if (!strcmp(cpopt, "webnfs")) {
2324 *exflagsp |= (MNT_EXPUBLIC|MNT_EXRDONLY|MNT_EXPORTANON);
2325 opt_flags |= OP_MAPALL;
2326 } else if (cpoptarg && !strcmp(cpopt, "index")) {
2327 ep->ex_indexfile = strdup(cpoptarg);
2328 } else if (!strcmp(cpopt, "quiet")) {
2329 opt_flags |= OP_QUIET;
2330 } else if (cpoptarg && !strcmp(cpopt, "sec")) {
2331 if (parsesec(cpoptarg, ep))
2333 opt_flags |= OP_SEC;
2336 syslog(LOG_ERR, "bad opt %s", cpopt);
2355 * Translate a character string to the corresponding list of network
2356 * addresses for a hostname.
2359 get_host(char *cp, struct grouplist *grp, struct grouplist *tgrp)
2361 struct grouplist *checkgrp;
2362 struct addrinfo *ai, *tai, hints;
2364 char host[NI_MAXHOST];
2366 if (grp->gr_type != GT_NULL) {
2367 syslog(LOG_ERR, "Bad netgroup type for ip host %s", cp);
2370 memset(&hints, 0, sizeof hints);
2371 hints.ai_flags = AI_CANONNAME;
2372 hints.ai_protocol = IPPROTO_UDP;
2373 ecode = getaddrinfo(cp, NULL, &hints, &ai);
2375 syslog(LOG_ERR,"can't get address info for host %s", cp);
2378 grp->gr_ptr.gt_addrinfo = ai;
2379 while (ai != NULL) {
2380 if (ai->ai_canonname == NULL) {
2381 if (getnameinfo(ai->ai_addr, ai->ai_addrlen, host,
2382 sizeof host, NULL, 0, NI_NUMERICHOST) != 0)
2383 strlcpy(host, "?", sizeof(host));
2384 ai->ai_canonname = strdup(host);
2385 ai->ai_flags |= AI_CANONNAME;
2388 fprintf(stderr, "got host %s\n", ai->ai_canonname);
2390 * Sanity check: make sure we don't already have an entry
2391 * for this host in the grouplist.
2393 for (checkgrp = tgrp; checkgrp != NULL;
2394 checkgrp = checkgrp->gr_next) {
2395 if (checkgrp->gr_type != GT_HOST)
2397 for (tai = checkgrp->gr_ptr.gt_addrinfo; tai != NULL;
2398 tai = tai->ai_next) {
2399 if (sacmp(tai->ai_addr, ai->ai_addr, NULL) != 0)
2403 "ignoring duplicate host %s\n",
2405 grp->gr_type = GT_IGNORE;
2411 grp->gr_type = GT_HOST;
2416 * Free up an exports list component
2419 free_exp(struct exportlist *ep)
2422 if (ep->ex_defdir) {
2423 free_host(ep->ex_defdir->dp_hosts);
2424 free((caddr_t)ep->ex_defdir);
2428 if (ep->ex_indexfile)
2429 free(ep->ex_indexfile);
2430 free_dir(ep->ex_dirl);
2438 free_host(struct hostlist *hp)
2440 struct hostlist *hp2;
2452 struct hostlist *hp;
2454 hp = (struct hostlist *)malloc(sizeof (struct hostlist));
2455 if (hp == (struct hostlist *)NULL)
2457 hp->ht_next = (struct hostlist *)NULL;
2463 * Out of memory, fatal
2469 syslog(LOG_ERR, "out of memory");
2474 * Do the nmount() syscall with the update flag to push the export info into
2478 do_mount(struct exportlist *ep, struct grouplist *grp, int exflags,
2479 struct xucred *anoncrp, char *dirp, int dirplen, struct statfs *fsb)
2482 struct addrinfo *ai;
2483 struct export_args ea, *eap;
2491 struct nfsex_args nfsea;
2493 if (run_v4server > 0)
2494 eap = &nfsea.export;
2504 bzero(eap, sizeof (struct export_args));
2505 bzero(errmsg, sizeof(errmsg));
2506 eap->ex_flags = exflags;
2507 eap->ex_anon = *anoncrp;
2508 eap->ex_indexfile = ep->ex_indexfile;
2509 if (grp->gr_type == GT_HOST)
2510 ai = grp->gr_ptr.gt_addrinfo;
2513 eap->ex_numsecflavors = ep->ex_numsecflavors;
2514 for (i = 0; i < eap->ex_numsecflavors; i++)
2515 eap->ex_secflavors[i] = ep->ex_secflavors[i];
2516 if (eap->ex_numsecflavors == 0) {
2517 eap->ex_numsecflavors = 1;
2518 eap->ex_secflavors[0] = AUTH_SYS;
2522 if (v4root_phase == 0) {
2523 build_iovec(&iov, &iovlen, "fstype", NULL, 0);
2524 build_iovec(&iov, &iovlen, "fspath", NULL, 0);
2525 build_iovec(&iov, &iovlen, "from", NULL, 0);
2526 build_iovec(&iov, &iovlen, "update", NULL, 0);
2527 build_iovec(&iov, &iovlen, "export", eap,
2528 sizeof (struct export_args));
2529 build_iovec(&iov, &iovlen, "errmsg", errmsg, sizeof(errmsg));
2533 switch (grp->gr_type) {
2535 if (ai->ai_addr->sa_family == AF_INET6 && have_v6 == 0)
2537 eap->ex_addr = ai->ai_addr;
2538 eap->ex_addrlen = ai->ai_addrlen;
2539 eap->ex_masklen = 0;
2542 if (grp->gr_ptr.gt_net.nt_net.ss_family == AF_INET6 &&
2546 (struct sockaddr *)&grp->gr_ptr.gt_net.nt_net;
2548 ((struct sockaddr *)&grp->gr_ptr.gt_net.nt_net)->sa_len;
2550 (struct sockaddr *)&grp->gr_ptr.gt_net.nt_mask;
2551 eap->ex_masklen = ((struct sockaddr *)&grp->gr_ptr.gt_net.nt_mask)->sa_len;
2554 eap->ex_addr = NULL;
2555 eap->ex_addrlen = 0;
2556 eap->ex_mask = NULL;
2557 eap->ex_masklen = 0;
2564 syslog(LOG_ERR, "bad grouptype");
2572 * For V4:, use the nfssvc() syscall, instead of mount().
2574 if (v4root_phase == 2) {
2575 nfsea.fspec = v4root_dirpath;
2576 if (run_v4server > 0 &&
2577 nfssvc(NFSSVC_V4ROOTEXPORT, (caddr_t)&nfsea) < 0) {
2578 syslog(LOG_ERR, "Exporting V4: failed");
2584 * Maybe I should just use the fsb->f_mntonname path
2585 * instead of looping back up the dirp to the mount
2587 * Also, needs to know how to export all types of local
2588 * exportable filesystems and not just "ufs".
2590 iov[1].iov_base = fsb->f_fstypename; /* "fstype" */
2591 iov[1].iov_len = strlen(fsb->f_fstypename) + 1;
2592 iov[3].iov_base = fsb->f_mntonname; /* "fspath" */
2593 iov[3].iov_len = strlen(fsb->f_mntonname) + 1;
2594 iov[5].iov_base = fsb->f_mntfromname; /* "from" */
2595 iov[5].iov_len = strlen(fsb->f_mntfromname) + 1;
2598 while (nmount(iov, iovlen, fsb->f_flags) < 0) {
2602 cp = dirp + dirplen - 1;
2603 if (opt_flags & OP_QUIET) {
2607 if (errno == EPERM) {
2609 warnx("can't change attributes for %s: %s",
2612 "can't change attributes for %s: %s",
2617 if (opt_flags & OP_ALLDIRS) {
2618 if (errno == EINVAL)
2620 "-alldirs requested but %s is not a filesystem mountpoint",
2624 "could not remount %s: %m",
2629 /* back up over the last component */
2630 while (*cp == '/' && cp > dirp)
2632 while (*(cp - 1) != '/' && cp > dirp)
2636 warnx("mnt unsucc");
2637 syslog(LOG_ERR, "can't export %s %s",
2645 * Check that we're still on the same
2648 if (statfs(dirp, &fsb1) != 0 ||
2649 bcmp(&fsb1.f_fsid, &fsb->f_fsid,
2650 sizeof (fsb1.f_fsid)) != 0) {
2653 "can't export %s %s", dirp,
2662 * For the experimental server:
2663 * If this is the public directory, get the file handle
2664 * and load it into the kernel via the nfssvc() syscall.
2666 if (run_v4server > 0 && (exflags & MNT_EXPUBLIC) != 0) {
2670 if (eap->ex_indexfile != NULL)
2671 public_name = eap->ex_indexfile;
2674 if (getfh(public_name, &fh) < 0)
2676 "Can't get public fh for %s", public_name);
2677 else if (nfssvc(NFSSVC_PUBLICFH, (caddr_t)&fh) < 0)
2679 "Can't set public fh for %s", public_name);
2692 /* free strings allocated by strdup() in getmntopts.c */
2694 free(iov[0].iov_base); /* fstype */
2695 free(iov[2].iov_base); /* fspath */
2696 free(iov[4].iov_base); /* from */
2697 free(iov[6].iov_base); /* update */
2698 free(iov[8].iov_base); /* export */
2699 free(iov[10].iov_base); /* errmsg */
2701 /* free iov, allocated by realloc() */
2708 * Translate a net address.
2710 * If `maskflg' is nonzero, then `cp' is a netmask, not a network address.
2713 get_net(char *cp, struct netmsk *net, int maskflg)
2715 struct netent *np = NULL;
2716 char *name, *p, *prefp;
2717 struct sockaddr_in sin;
2718 struct sockaddr *sa = NULL;
2719 struct addrinfo hints, *ai = NULL;
2720 char netname[NI_MAXHOST];
2724 if ((opt_flags & OP_MASKLEN) && !maskflg) {
2725 p = strchr(cp, '/');
2731 * Check for a numeric address first. We wish to avoid
2732 * possible DNS lookups in getnetbyname().
2734 if (isxdigit(*cp) || *cp == ':') {
2735 memset(&hints, 0, sizeof hints);
2736 /* Ensure the mask and the network have the same family. */
2737 if (maskflg && (opt_flags & OP_NET))
2738 hints.ai_family = net->nt_net.ss_family;
2739 else if (!maskflg && (opt_flags & OP_HAVEMASK))
2740 hints.ai_family = net->nt_mask.ss_family;
2742 hints.ai_family = AF_UNSPEC;
2743 hints.ai_flags = AI_NUMERICHOST;
2744 if (getaddrinfo(cp, NULL, &hints, &ai) == 0)
2746 if (sa != NULL && ai->ai_family == AF_INET) {
2748 * The address in `cp' is really a network address, so
2749 * use inet_network() to re-interpret this correctly.
2750 * e.g. "127.1" means 127.1.0.0, not 127.0.0.1.
2752 bzero(&sin, sizeof sin);
2753 sin.sin_family = AF_INET;
2754 sin.sin_len = sizeof sin;
2755 sin.sin_addr = inet_makeaddr(inet_network(cp), 0);
2757 fprintf(stderr, "get_net: v4 addr %s\n",
2758 inet_ntoa(sin.sin_addr));
2759 sa = (struct sockaddr *)&sin;
2762 if (sa == NULL && (np = getnetbyname(cp)) != NULL) {
2763 bzero(&sin, sizeof sin);
2764 sin.sin_family = AF_INET;
2765 sin.sin_len = sizeof sin;
2766 sin.sin_addr = inet_makeaddr(np->n_net, 0);
2767 sa = (struct sockaddr *)&sin;
2773 /* The specified sockaddr is a mask. */
2774 if (checkmask(sa) != 0)
2776 bcopy(sa, &net->nt_mask, sa->sa_len);
2777 opt_flags |= OP_HAVEMASK;
2779 /* The specified sockaddr is a network address. */
2780 bcopy(sa, &net->nt_net, sa->sa_len);
2782 /* Get a network name for the export list. */
2785 } else if (getnameinfo(sa, sa->sa_len, netname, sizeof netname,
2786 NULL, 0, NI_NUMERICHOST) == 0) {
2791 if ((net->nt_name = strdup(name)) == NULL)
2795 * Extract a mask from either a "/<masklen>" suffix, or
2796 * from the class of an IPv4 address.
2798 if (opt_flags & OP_MASKLEN) {
2799 preflen = strtol(prefp, NULL, 10);
2800 if (preflen < 0L || preflen == LONG_MAX)
2802 bcopy(sa, &net->nt_mask, sa->sa_len);
2803 if (makemask(&net->nt_mask, (int)preflen) != 0)
2805 opt_flags |= OP_HAVEMASK;
2807 } else if (sa->sa_family == AF_INET &&
2808 (opt_flags & OP_MASK) == 0) {
2811 addr = ((struct sockaddr_in *)sa)->sin_addr.s_addr;
2812 if (IN_CLASSA(addr))
2814 else if (IN_CLASSB(addr))
2816 else if (IN_CLASSC(addr))
2818 else if (IN_CLASSD(addr))
2821 preflen = 32; /* XXX */
2823 bcopy(sa, &net->nt_mask, sa->sa_len);
2824 makemask(&net->nt_mask, (int)preflen);
2825 opt_flags |= OP_HAVEMASK;
2840 * Parse out the next white space separated field
2843 nextfield(char **cp, char **endcp)
2848 while (*p == ' ' || *p == '\t')
2850 if (*p == '\n' || *p == '\0')
2854 while (*p != ' ' && *p != '\t' && *p != '\n' && *p != '\0')
2861 * Get an exports file line. Skip over blank lines and handle line
2869 int totlen, cont_line;
2872 * Loop around ignoring blank lines and getting all continuation lines.
2877 if ((p = fgetln(exp_file, &len)) == NULL)
2882 (*cp == ' ' || *cp == '\t' || *cp == '\n' || *cp == '\\')) {
2892 if (linesize < len + totlen + 1) {
2893 linesize = len + totlen + 1;
2894 line = realloc(line, linesize);
2898 memcpy(line + totlen, p, len);
2900 line[totlen] = '\0';
2901 } while (totlen == 0 || cont_line);
2906 * Parse a description of a credential.
2909 parsecred(char *namelist, struct xucred *cr)
2916 gid_t groups[XU_NGROUPS + 1];
2919 cr->cr_version = XUCRED_VERSION;
2921 * Set up the unprivileged user.
2924 cr->cr_groups[0] = -2;
2927 * Get the user's password table entry.
2929 names = strsep_quote(&namelist, " \t\n");
2930 name = strsep(&names, ":");
2931 /* Bug? name could be NULL here */
2932 if (isdigit(*name) || *name == '-')
2933 pw = getpwuid(atoi(name));
2935 pw = getpwnam(name);
2937 * Credentials specified as those of a user.
2939 if (names == NULL) {
2941 syslog(LOG_ERR, "unknown user: %s", name);
2944 cr->cr_uid = pw->pw_uid;
2945 ngroups = XU_NGROUPS + 1;
2946 if (getgrouplist(pw->pw_name, pw->pw_gid, groups, &ngroups))
2947 syslog(LOG_ERR, "too many groups");
2949 * Compress out duplicate.
2951 cr->cr_ngroups = ngroups - 1;
2952 cr->cr_groups[0] = groups[0];
2953 for (cnt = 2; cnt < ngroups; cnt++)
2954 cr->cr_groups[cnt - 1] = groups[cnt];
2958 * Explicit credential specified as a colon separated list:
2962 cr->cr_uid = pw->pw_uid;
2963 else if (isdigit(*name) || *name == '-')
2964 cr->cr_uid = atoi(name);
2966 syslog(LOG_ERR, "unknown user: %s", name);
2970 while (names != NULL && *names != '\0' && cr->cr_ngroups < XU_NGROUPS) {
2971 name = strsep(&names, ":");
2972 if (isdigit(*name) || *name == '-') {
2973 cr->cr_groups[cr->cr_ngroups++] = atoi(name);
2975 if ((gr = getgrnam(name)) == NULL) {
2976 syslog(LOG_ERR, "unknown group: %s", name);
2979 cr->cr_groups[cr->cr_ngroups++] = gr->gr_gid;
2982 if (names != NULL && *names != '\0' && cr->cr_ngroups == XU_NGROUPS)
2983 syslog(LOG_ERR, "too many groups");
2986 #define STRSIZ (MNTNAMLEN+MNTPATHLEN+50)
2988 * Routines that maintain the remote mounttab
2993 struct mountlist *mlp, **mlpp;
2994 char *host, *dirp, *cp;
2998 if ((mlfile = fopen(_PATH_RMOUNTLIST, "r")) == NULL) {
2999 if (errno == ENOENT)
3002 syslog(LOG_ERR, "can't open %s", _PATH_RMOUNTLIST);
3007 while (fgets(str, STRSIZ, mlfile) != NULL) {
3009 host = strsep(&cp, " \t\n");
3010 dirp = strsep(&cp, " \t\n");
3011 if (host == NULL || dirp == NULL)
3013 mlp = (struct mountlist *)malloc(sizeof (*mlp));
3014 if (mlp == (struct mountlist *)NULL)
3016 strncpy(mlp->ml_host, host, MNTNAMLEN);
3017 mlp->ml_host[MNTNAMLEN] = '\0';
3018 strncpy(mlp->ml_dirp, dirp, MNTPATHLEN);
3019 mlp->ml_dirp[MNTPATHLEN] = '\0';
3020 mlp->ml_next = (struct mountlist *)NULL;
3022 mlpp = &mlp->ml_next;
3028 del_mlist(char *hostp, char *dirp)
3030 struct mountlist *mlp, **mlpp;
3031 struct mountlist *mlp2;
3038 if (!strcmp(mlp->ml_host, hostp) &&
3039 (!dirp || !strcmp(mlp->ml_dirp, dirp))) {
3042 *mlpp = mlp = mlp->ml_next;
3043 free((caddr_t)mlp2);
3045 mlpp = &mlp->ml_next;
3050 if ((mlfile = fopen(_PATH_RMOUNTLIST, "w")) == NULL) {
3051 syslog(LOG_ERR,"can't update %s", _PATH_RMOUNTLIST);
3056 fprintf(mlfile, "%s %s\n", mlp->ml_host, mlp->ml_dirp);
3064 add_mlist(char *hostp, char *dirp)
3066 struct mountlist *mlp, **mlpp;
3072 if (!strcmp(mlp->ml_host, hostp) && !strcmp(mlp->ml_dirp, dirp))
3074 mlpp = &mlp->ml_next;
3077 mlp = (struct mountlist *)malloc(sizeof (*mlp));
3078 if (mlp == (struct mountlist *)NULL)
3080 strncpy(mlp->ml_host, hostp, MNTNAMLEN);
3081 mlp->ml_host[MNTNAMLEN] = '\0';
3082 strncpy(mlp->ml_dirp, dirp, MNTPATHLEN);
3083 mlp->ml_dirp[MNTPATHLEN] = '\0';
3084 mlp->ml_next = (struct mountlist *)NULL;
3086 if ((mlfile = fopen(_PATH_RMOUNTLIST, "a")) == NULL) {
3087 syslog(LOG_ERR, "can't update %s", _PATH_RMOUNTLIST);
3090 fprintf(mlfile, "%s %s\n", mlp->ml_host, mlp->ml_dirp);
3095 * Free up a group list.
3098 free_grp(struct grouplist *grp)
3100 if (grp->gr_type == GT_HOST) {
3101 if (grp->gr_ptr.gt_addrinfo != NULL)
3102 freeaddrinfo(grp->gr_ptr.gt_addrinfo);
3103 } else if (grp->gr_type == GT_NET) {
3104 if (grp->gr_ptr.gt_net.nt_name)
3105 free(grp->gr_ptr.gt_net.nt_name);
3112 SYSLOG(int pri, const char *fmt, ...)
3117 vfprintf(stderr, fmt, ap);
3123 * Check options for consistency.
3126 check_options(struct dirlist *dp)
3129 if (v4root_phase == 0 && dp == NULL)
3131 if ((opt_flags & (OP_MAPROOT | OP_MAPALL)) == (OP_MAPROOT | OP_MAPALL)) {
3132 syslog(LOG_ERR, "-mapall and -maproot mutually exclusive");
3135 if ((opt_flags & OP_MASK) && (opt_flags & OP_NET) == 0) {
3136 syslog(LOG_ERR, "-mask requires -network");
3139 if ((opt_flags & OP_NET) && (opt_flags & OP_HAVEMASK) == 0) {
3140 syslog(LOG_ERR, "-network requires mask specification");
3143 if ((opt_flags & OP_MASK) && (opt_flags & OP_MASKLEN)) {
3144 syslog(LOG_ERR, "-mask and /masklen are mutually exclusive");
3147 if (v4root_phase > 0 &&
3149 ~(OP_SEC | OP_MASK | OP_NET | OP_HAVEMASK | OP_MASKLEN)) != 0) {
3150 syslog(LOG_ERR,"only -sec,-net,-mask options allowed on V4:");
3153 if ((opt_flags & OP_ALLDIRS) && dp->dp_left) {
3154 syslog(LOG_ERR, "-alldirs has multiple directories");
3161 * Check an absolute directory path for any symbolic links. Return true
3164 check_dirpath(char *dirp)
3171 while (*cp && ret) {
3174 if (lstat(dirp, &sb) < 0 || !S_ISDIR(sb.st_mode))
3180 if (lstat(dirp, &sb) < 0 || !S_ISDIR(sb.st_mode))
3186 * Make a netmask according to the specified prefix length. The ss_family
3187 * and other non-address fields must be initialised before calling this.
3190 makemask(struct sockaddr_storage *ssp, int bitlen)
3195 if ((p = sa_rawaddr((struct sockaddr *)ssp, &len)) == NULL)
3197 if (bitlen > len * CHAR_BIT)
3200 for (i = 0; i < len; i++) {
3201 bits = (bitlen > CHAR_BIT) ? CHAR_BIT : bitlen;
3202 *p++ = (u_char)~0 << (CHAR_BIT - bits);
3209 * Check that the sockaddr is a valid netmask. Returns 0 if the mask
3210 * is acceptable (i.e. of the form 1...10....0).
3213 checkmask(struct sockaddr *sa)
3218 if ((mask = sa_rawaddr(sa, &len)) == NULL)
3221 for (i = 0; i < len; i++)
3222 if (mask[i] != 0xff)
3225 if (~mask[i] & (u_char)(~mask[i] + 1))
3229 for (; i < len; i++)
3236 * Compare two sockaddrs according to a specified mask. Return zero if
3237 * `sa1' matches `sa2' when filtered by the netmask in `samask'.
3238 * If samask is NULL, perform a full comparison.
3241 sacmp(struct sockaddr *sa1, struct sockaddr *sa2, struct sockaddr *samask)
3243 unsigned char *p1, *p2, *mask;
3246 if (sa1->sa_family != sa2->sa_family ||
3247 (p1 = sa_rawaddr(sa1, &len)) == NULL ||
3248 (p2 = sa_rawaddr(sa2, NULL)) == NULL)
3251 switch (sa1->sa_family) {
3253 if (((struct sockaddr_in6 *)sa1)->sin6_scope_id !=
3254 ((struct sockaddr_in6 *)sa2)->sin6_scope_id)
3259 /* Simple binary comparison if no mask specified. */
3261 return (memcmp(p1, p2, len));
3263 /* Set up the mask, and do a mask-based comparison. */
3264 if (sa1->sa_family != samask->sa_family ||
3265 (mask = sa_rawaddr(samask, NULL)) == NULL)
3268 for (i = 0; i < len; i++)
3269 if ((p1[i] & mask[i]) != (p2[i] & mask[i]))
3275 * Return a pointer to the part of the sockaddr that contains the
3276 * raw address, and set *nbytes to its length in bytes. Returns
3277 * NULL if the address family is unknown.
3280 sa_rawaddr(struct sockaddr *sa, int *nbytes) {
3284 switch (sa->sa_family) {
3286 len = sizeof(((struct sockaddr_in *)sa)->sin_addr);
3287 p = &((struct sockaddr_in *)sa)->sin_addr;
3290 len = sizeof(((struct sockaddr_in6 *)sa)->sin6_addr);
3291 p = &((struct sockaddr_in6 *)sa)->sin6_addr;
3304 huphandler(int sig __unused)
3309 void terminate(int sig __unused)
3311 pidfile_remove(pfh);
3312 rpcb_unset(MOUNTPROG, MOUNTVERS, NULL);
3313 rpcb_unset(MOUNTPROG, MOUNTVERS3, NULL);