mountd.c revision 100336
11558Srgrimes/* 21558Srgrimes * Copyright (c) 1989, 1993 31558Srgrimes * The Regents of the University of California. All rights reserved. 41558Srgrimes * 51558Srgrimes * This code is derived from software contributed to Berkeley by 61558Srgrimes * Herb Hasler and Rick Macklem at The University of Guelph. 71558Srgrimes * 81558Srgrimes * Redistribution and use in source and binary forms, with or without 91558Srgrimes * modification, are permitted provided that the following conditions 101558Srgrimes * are met: 111558Srgrimes * 1. Redistributions of source code must retain the above copyright 121558Srgrimes * notice, this list of conditions and the following disclaimer. 131558Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 141558Srgrimes * notice, this list of conditions and the following disclaimer in the 151558Srgrimes * documentation and/or other materials provided with the distribution. 161558Srgrimes * 3. All advertising materials mentioning features or use of this software 171558Srgrimes * must display the following acknowledgement: 181558Srgrimes * This product includes software developed by the University of 191558Srgrimes * California, Berkeley and its contributors. 201558Srgrimes * 4. Neither the name of the University nor the names of its contributors 211558Srgrimes * may be used to endorse or promote products derived from this software 221558Srgrimes * without specific prior written permission. 231558Srgrimes * 241558Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 251558Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 261558Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 271558Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 281558Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 291558Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 301558Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 311558Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 321558Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 331558Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 341558Srgrimes * SUCH DAMAGE. 351558Srgrimes */ 361558Srgrimes 371558Srgrimes#ifndef lint 3837663Scharnierstatic const char copyright[] = 391558Srgrimes"@(#) Copyright (c) 1989, 1993\n\ 401558Srgrimes The Regents of the University of California. All rights reserved.\n"; 412999Swollman#endif /*not lint*/ 421558Srgrimes 431558Srgrimes#ifndef lint 4437663Scharnier#if 0 4537663Scharnierstatic char sccsid[] = "@(#)mountd.c 8.15 (Berkeley) 5/1/95"; 4637663Scharnier#endif 472999Swollmanstatic const char rcsid[] = 4850476Speter "$FreeBSD: head/usr.sbin/mountd/mountd.c 100336 2002-07-18 20:52:17Z joerg $"; 492999Swollman#endif /*not lint*/ 501558Srgrimes 511558Srgrimes#include <sys/param.h> 521558Srgrimes#include <sys/mount.h> 5374462Salfred#include <sys/fcntl.h> 541558Srgrimes#include <sys/stat.h> 551558Srgrimes#include <sys/syslog.h> 5624330Sguido#include <sys/sysctl.h> 5796622Siedowse#include <sys/linker.h> 5896622Siedowse#include <sys/module.h> 591558Srgrimes 601558Srgrimes#include <rpc/rpc.h> 611558Srgrimes#include <rpc/pmap_clnt.h> 6274462Salfred#include <rpc/pmap_prot.h> 6374462Salfred#include <rpcsvc/mount.h> 641558Srgrimes#include <nfs/rpcv2.h> 659336Sdfr#include <nfs/nfsproto.h> 6683653Speter#include <nfsserver/nfs.h> 6723681Speter#include <ufs/ufs/ufsmount.h> 6877162Sru#include <fs/msdosfs/msdosfsmount.h> 6977223Sru#include <fs/ntfs/ntfsmount.h> 7023681Speter#include <isofs/cd9660/cd9660_mount.h> /* XXX need isofs in include */ 711558Srgrimes 721558Srgrimes#include <arpa/inet.h> 731558Srgrimes 741558Srgrimes#include <ctype.h> 7537663Scharnier#include <err.h> 761558Srgrimes#include <errno.h> 771558Srgrimes#include <grp.h> 781558Srgrimes#include <netdb.h> 791558Srgrimes#include <pwd.h> 801558Srgrimes#include <signal.h> 811558Srgrimes#include <stdio.h> 821558Srgrimes#include <stdlib.h> 831558Srgrimes#include <string.h> 841558Srgrimes#include <unistd.h> 851558Srgrimes#include "pathnames.h" 861558Srgrimes 871558Srgrimes#ifdef DEBUG 881558Srgrimes#include <stdarg.h> 891558Srgrimes#endif 901558Srgrimes 9174462Salfred#ifndef MOUNTDLOCK 9274462Salfred#define MOUNTDLOCK "/var/run/mountd.lock" 9374462Salfred#endif 9474462Salfred 951558Srgrimes/* 961558Srgrimes * Structures for keeping the mount list and export list 971558Srgrimes */ 981558Srgrimesstruct mountlist { 991558Srgrimes struct mountlist *ml_next; 1001558Srgrimes char ml_host[RPCMNT_NAMELEN+1]; 1011558Srgrimes char ml_dirp[RPCMNT_PATHLEN+1]; 1021558Srgrimes}; 1031558Srgrimes 1041558Srgrimesstruct dirlist { 1051558Srgrimes struct dirlist *dp_left; 1061558Srgrimes struct dirlist *dp_right; 1071558Srgrimes int dp_flag; 1081558Srgrimes struct hostlist *dp_hosts; /* List of hosts this dir exported to */ 1091558Srgrimes char dp_dirp[1]; /* Actually malloc'd to size of dir */ 1101558Srgrimes}; 1111558Srgrimes/* dp_flag bits */ 1121558Srgrimes#define DP_DEFSET 0x1 1139336Sdfr#define DP_HOSTSET 0x2 1141558Srgrimes 1151558Srgrimesstruct exportlist { 1161558Srgrimes struct exportlist *ex_next; 1171558Srgrimes struct dirlist *ex_dirl; 1181558Srgrimes struct dirlist *ex_defdir; 1191558Srgrimes int ex_flag; 1201558Srgrimes fsid_t ex_fs; 1211558Srgrimes char *ex_fsdir; 12227447Sdfr char *ex_indexfile; 1231558Srgrimes}; 1241558Srgrimes/* ex_flag bits */ 1251558Srgrimes#define EX_LINKED 0x1 1261558Srgrimes 1271558Srgrimesstruct netmsk { 12874462Salfred struct sockaddr_storage nt_net; 12975801Siedowse struct sockaddr_storage nt_mask; 13042144Sdfr char *nt_name; 1311558Srgrimes}; 1321558Srgrimes 1331558Srgrimesunion grouptypes { 13474462Salfred struct addrinfo *gt_addrinfo; 1351558Srgrimes struct netmsk gt_net; 1361558Srgrimes}; 1371558Srgrimes 1381558Srgrimesstruct grouplist { 1391558Srgrimes int gr_type; 1401558Srgrimes union grouptypes gr_ptr; 1411558Srgrimes struct grouplist *gr_next; 1421558Srgrimes}; 1431558Srgrimes/* Group types */ 1441558Srgrimes#define GT_NULL 0x0 1451558Srgrimes#define GT_HOST 0x1 1461558Srgrimes#define GT_NET 0x2 14775641Siedowse#define GT_DEFAULT 0x3 1487401Swpaul#define GT_IGNORE 0x5 1491558Srgrimes 1501558Srgrimesstruct hostlist { 1519336Sdfr int ht_flag; /* Uses DP_xx bits */ 1521558Srgrimes struct grouplist *ht_grp; 1531558Srgrimes struct hostlist *ht_next; 1541558Srgrimes}; 1551558Srgrimes 1569336Sdfrstruct fhreturn { 1579336Sdfr int fhr_flag; 1589336Sdfr int fhr_vers; 1599336Sdfr nfsfh_t fhr_fh; 1609336Sdfr}; 1619336Sdfr 1621558Srgrimes/* Global defs */ 16392882Simpchar *add_expdir(struct dirlist **, char *, int); 16492882Simpvoid add_dlist(struct dirlist **, struct dirlist *, 16592882Simp struct grouplist *, int); 16692882Simpvoid add_mlist(char *, char *); 16792882Simpint check_dirpath(char *); 16892882Simpint check_options(struct dirlist *); 16975801Siedowseint checkmask(struct sockaddr *sa); 17092882Simpint chk_host(struct dirlist *, struct sockaddr *, int *, int *); 17175635Siedowsevoid del_mlist(char *hostp, char *dirp); 17292882Simpstruct dirlist *dirp_search(struct dirlist *, char *); 17392882Simpint do_mount(struct exportlist *, struct grouplist *, int, 17492882Simp struct xucred *, char *, int, struct statfs *); 17592882Simpint do_opt(char **, char **, struct exportlist *, struct grouplist *, 17692882Simp int *, int *, struct xucred *); 17792882Simpstruct exportlist *ex_search(fsid_t *); 17892882Simpstruct exportlist *get_exp(void); 17992882Simpvoid free_dir(struct dirlist *); 18092882Simpvoid free_exp(struct exportlist *); 18192882Simpvoid free_grp(struct grouplist *); 18292882Simpvoid free_host(struct hostlist *); 18392882Simpvoid get_exportlist(void); 18492882Simpint get_host(char *, struct grouplist *, struct grouplist *); 18592882Simpstruct hostlist *get_ht(void); 18692882Simpint get_line(void); 18792882Simpvoid get_mountlist(void); 18892882Simpint get_net(char *, struct netmsk *, int); 18992882Simpvoid getexp_err(struct exportlist *, struct grouplist *); 19092882Simpstruct grouplist *get_grp(void); 19192882Simpvoid hang_dirp(struct dirlist *, struct grouplist *, 19292882Simp struct exportlist *, int); 19375754Siedowsevoid huphandler(int sig); 19475801Siedowseint makemask(struct sockaddr_storage *ssp, int bitlen); 19592882Simpvoid mntsrv(struct svc_req *, SVCXPRT *); 19692882Simpvoid nextfield(char **, char **); 19792882Simpvoid out_of_mem(void); 19892882Simpvoid parsecred(char *, struct xucred *); 199100117Salfredint put_exlist(struct dirlist *, XDR *, struct dirlist *, int *, int); 20075801Siedowsevoid *sa_rawaddr(struct sockaddr *sa, int *nbytes); 20175801Siedowseint sacmp(struct sockaddr *sa1, struct sockaddr *sa2, 20275801Siedowse struct sockaddr *samask); 20392882Simpint scan_tree(struct dirlist *, struct sockaddr *); 20492882Simpstatic void usage(void); 20592882Simpint xdr_dir(XDR *, char *); 20692882Simpint xdr_explist(XDR *, caddr_t); 207100117Salfredint xdr_explist_brief(XDR *, caddr_t); 20892882Simpint xdr_fhs(XDR *, caddr_t); 20992882Simpint xdr_mlist(XDR *, caddr_t); 21092882Simpvoid terminate(int); 2111558Srgrimes 2121558Srgrimesstruct exportlist *exphead; 2131558Srgrimesstruct mountlist *mlhead; 2141558Srgrimesstruct grouplist *grphead; 2151558Srgrimeschar exname[MAXPATHLEN]; 21672650Sgreenstruct xucred def_anon = { 21791354Sdd XUCRED_VERSION, 21872650Sgreen (uid_t)-2, 2191558Srgrimes 1, 22072650Sgreen { (gid_t)-2 }, 22172650Sgreen NULL 2221558Srgrimes}; 22325087Sdfrint force_v2 = 0; 2249336Sdfrint resvport_only = 1; 2259336Sdfrint dir_only = 1; 22631705Sguidoint log = 0; 22775754Siedowseint got_sighup = 0; 22874462Salfred 2291558Srgrimesint opt_flags; 23074462Salfredstatic int have_v6 = 1; 23174462Salfred#ifdef NI_WITHSCOPEID 23274462Salfredstatic const int ninumeric = NI_NUMERICHOST | NI_WITHSCOPEID; 23374462Salfred#else 23474462Salfredstatic const int ninumeric = NI_NUMERICHOST; 23574462Salfred#endif 23674462Salfred 23774462Salfredint mountdlockfd; 23875801Siedowse/* Bits for opt_flags above */ 2391558Srgrimes#define OP_MAPROOT 0x01 2401558Srgrimes#define OP_MAPALL 0x02 24183653Speter/* 0x4 free */ 2421558Srgrimes#define OP_MASK 0x08 2431558Srgrimes#define OP_NET 0x10 2441558Srgrimes#define OP_ALLDIRS 0x40 24575801Siedowse#define OP_HAVEMASK 0x80 /* A mask was specified or inferred. */ 246100336Sjoerg#define OP_QUIET 0x100 24774462Salfred#define OP_MASKLEN 0x200 2481558Srgrimes 2491558Srgrimes#ifdef DEBUG 2501558Srgrimesint debug = 1; 25192882Simpvoid SYSLOG(int, const char *, ...) __printflike(2, 3); 2521558Srgrimes#define syslog SYSLOG 2531558Srgrimes#else 2541558Srgrimesint debug = 0; 2551558Srgrimes#endif 2561558Srgrimes 2571558Srgrimes/* 2581558Srgrimes * Mountd server for NFS mount protocol as described in: 2591558Srgrimes * NFS: Network File System Protocol Specification, RFC1094, Appendix A 2601558Srgrimes * The optional arguments are the exports file name 2611558Srgrimes * default: _PATH_EXPORTS 2621558Srgrimes * and "-n" to allow nonroot mount. 2631558Srgrimes */ 2641558Srgrimesint 2651558Srgrimesmain(argc, argv) 2661558Srgrimes int argc; 2671558Srgrimes char **argv; 2681558Srgrimes{ 26975754Siedowse fd_set readfds; 27074462Salfred SVCXPRT *udptransp, *tcptransp, *udp6transp, *tcp6transp; 27174462Salfred struct netconfig *udpconf, *tcpconf, *udp6conf, *tcp6conf; 27274462Salfred int udpsock, tcpsock, udp6sock, tcp6sock; 27374462Salfred int xcreated = 0, s; 27474462Salfred int one = 1; 27596622Siedowse int c; 2761558Srgrimes 27775635Siedowse udp6conf = tcp6conf = NULL; 27875635Siedowse udp6sock = tcp6sock = NULL; 27975635Siedowse 28074462Salfred /* Check that another mountd isn't already running. */ 28174462Salfred if ((mountdlockfd = (open(MOUNTDLOCK, O_RDONLY|O_CREAT, 0444))) == -1) 28274462Salfred err(1, "%s", MOUNTDLOCK); 28374462Salfred 28474462Salfred if(flock(mountdlockfd, LOCK_EX|LOCK_NB) == -1 && errno == EWOULDBLOCK) 28574462Salfred errx(1, "another rpc.mountd is already running. Aborting"); 28674462Salfred s = socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP); 28774462Salfred if (s < 0) 28874462Salfred have_v6 = 0; 28974462Salfred else 29074462Salfred close(s); 29183687Speter if (modfind("nfsserver") < 0) { 29283687Speter /* Not present in kernel, try loading it */ 29383687Speter if (kldload("nfsserver") < 0 || modfind("nfsserver") < 0) 29483687Speter errx(1, "NFS server is not available or loadable"); 2952999Swollman } 2962999Swollman 29731665Sguido while ((c = getopt(argc, argv, "2dlnr")) != -1) 2981558Srgrimes switch (c) { 29925087Sdfr case '2': 30025087Sdfr force_v2 = 1; 30125087Sdfr break; 3029336Sdfr case 'n': 3039336Sdfr resvport_only = 0; 3049336Sdfr break; 3059336Sdfr case 'r': 3069336Sdfr dir_only = 0; 3079336Sdfr break; 3088688Sphk case 'd': 3098688Sphk debug = debug ? 0 : 1; 3108688Sphk break; 31131656Sguido case 'l': 31231656Sguido log = 1; 31331656Sguido break; 3141558Srgrimes default: 31537663Scharnier usage(); 3161558Srgrimes }; 3171558Srgrimes argc -= optind; 3181558Srgrimes argv += optind; 3191558Srgrimes grphead = (struct grouplist *)NULL; 3201558Srgrimes exphead = (struct exportlist *)NULL; 3211558Srgrimes mlhead = (struct mountlist *)NULL; 3221558Srgrimes if (argc == 1) { 3231558Srgrimes strncpy(exname, *argv, MAXPATHLEN-1); 3241558Srgrimes exname[MAXPATHLEN-1] = '\0'; 3251558Srgrimes } else 3261558Srgrimes strcpy(exname, _PATH_EXPORTS); 3271558Srgrimes openlog("mountd", LOG_PID, LOG_DAEMON); 3281558Srgrimes if (debug) 32937663Scharnier warnx("getting export list"); 3301558Srgrimes get_exportlist(); 3311558Srgrimes if (debug) 33237663Scharnier warnx("getting mount list"); 3331558Srgrimes get_mountlist(); 3341558Srgrimes if (debug) 33537663Scharnier warnx("here we go"); 3361558Srgrimes if (debug == 0) { 3371558Srgrimes daemon(0, 0); 3381558Srgrimes signal(SIGINT, SIG_IGN); 3391558Srgrimes signal(SIGQUIT, SIG_IGN); 3401558Srgrimes } 34175754Siedowse signal(SIGHUP, huphandler); 34274462Salfred signal(SIGTERM, terminate); 3431558Srgrimes { FILE *pidfile = fopen(_PATH_MOUNTDPID, "w"); 3441558Srgrimes if (pidfile != NULL) { 3451558Srgrimes fprintf(pidfile, "%d\n", getpid()); 3461558Srgrimes fclose(pidfile); 3471558Srgrimes } 3481558Srgrimes } 34974462Salfred rpcb_unset(RPCPROG_MNT, RPCMNT_VER1, NULL); 35074462Salfred rpcb_unset(RPCPROG_MNT, RPCMNT_VER3, NULL); 35174462Salfred udpsock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); 35274462Salfred tcpsock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); 35374791Salfred udpconf = getnetconfigent("udp"); 35474791Salfred tcpconf = getnetconfigent("tcp"); 35574791Salfred if (!have_v6) 35674791Salfred goto skip_v6; 35774462Salfred udp6sock = socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP); 35874462Salfred tcp6sock = socket(AF_INET6, SOCK_STREAM, IPPROTO_TCP); 35974462Salfred /* 36074462Salfred * We're doing host-based access checks here, so don't allow 36174462Salfred * v4-in-v6 to confuse things. The kernel will disable it 36274462Salfred * by default on NFS sockets too. 36374462Salfred */ 36474462Salfred if (udp6sock != -1 && setsockopt(udp6sock, IPPROTO_IPV6, 36574462Salfred IPV6_BINDV6ONLY, &one, sizeof one) < 0){ 36674462Salfred syslog(LOG_ERR, "can't disable v4-in-v6 on UDP socket"); 36774462Salfred exit(1); 36874462Salfred } 36974462Salfred if (tcp6sock != -1 && setsockopt(tcp6sock, IPPROTO_IPV6, 37074462Salfred IPV6_BINDV6ONLY, &one, sizeof one) < 0){ 37174462Salfred syslog(LOG_ERR, "can't disable v4-in-v6 on UDP socket"); 37274462Salfred exit(1); 37374462Salfred } 37474462Salfred udp6conf = getnetconfigent("udp6"); 37574462Salfred tcp6conf = getnetconfigent("tcp6"); 37674791Salfred 37774791Salfredskip_v6: 37824759Sguido if (!resvport_only) { 37983687Speter if (sysctlbyname("vfs.nfsrv.nfs_privport", NULL, NULL, 38083687Speter &resvport_only, sizeof(resvport_only)) != 0 && 38183687Speter errno != ENOENT) { 38224759Sguido syslog(LOG_ERR, "sysctl: %m"); 38324759Sguido exit(1); 38424759Sguido } 38524330Sguido } 38674462Salfred if (udpsock != -1 && udpconf != NULL) { 38774462Salfred bindresvport(udpsock, NULL); 38874462Salfred udptransp = svc_dg_create(udpsock, 0, 0); 38974462Salfred if (udptransp != NULL) { 39074462Salfred if (!svc_reg(udptransp, RPCPROG_MNT, RPCMNT_VER1, 39174462Salfred mntsrv, udpconf)) 39274462Salfred syslog(LOG_WARNING, "can't register UDP RPCMNT_VER1 service"); 39374462Salfred else 39474462Salfred xcreated++; 39574462Salfred if (!force_v2) { 39674462Salfred if (!svc_reg(udptransp, RPCPROG_MNT, RPCMNT_VER3, 39774462Salfred mntsrv, udpconf)) 39874462Salfred syslog(LOG_WARNING, "can't register UDP RPCMNT_VER3 service"); 39974462Salfred else 40074462Salfred xcreated++; 40174462Salfred } 40274462Salfred } else 40374462Salfred syslog(LOG_WARNING, "can't create UDP services"); 40474462Salfred 40574462Salfred } 40674462Salfred if (tcpsock != -1 && tcpconf != NULL) { 40774462Salfred bindresvport(tcpsock, NULL); 40874462Salfred listen(tcpsock, SOMAXCONN); 40974462Salfred tcptransp = svc_vc_create(tcpsock, 0, 0); 41074462Salfred if (tcptransp != NULL) { 41174462Salfred if (!svc_reg(tcptransp, RPCPROG_MNT, RPCMNT_VER1, 41274462Salfred mntsrv, tcpconf)) 41374462Salfred syslog(LOG_WARNING, "can't register TCP RPCMNT_VER1 service"); 41474462Salfred else 41574462Salfred xcreated++; 41674462Salfred if (!force_v2) { 41774462Salfred if (!svc_reg(tcptransp, RPCPROG_MNT, RPCMNT_VER3, 41874462Salfred mntsrv, tcpconf)) 41974462Salfred syslog(LOG_WARNING, "can't register TCP RPCMNT_VER3 service"); 42074462Salfred else 42174462Salfred xcreated++; 42274462Salfred } 42374462Salfred } else 42474462Salfred syslog(LOG_WARNING, "can't create TCP service"); 42574462Salfred 42674462Salfred } 42774791Salfred if (have_v6 && udp6sock != -1 && udp6conf != NULL) { 42874462Salfred bindresvport(udp6sock, NULL); 42974462Salfred udp6transp = svc_dg_create(udp6sock, 0, 0); 43074462Salfred if (udp6transp != NULL) { 43174462Salfred if (!svc_reg(udp6transp, RPCPROG_MNT, RPCMNT_VER1, 43274462Salfred mntsrv, udp6conf)) 43374462Salfred syslog(LOG_WARNING, "can't register UDP6 RPCMNT_VER1 service"); 43474462Salfred else 43574462Salfred xcreated++; 43674462Salfred if (!force_v2) { 43774462Salfred if (!svc_reg(udp6transp, RPCPROG_MNT, RPCMNT_VER3, 43874462Salfred mntsrv, udp6conf)) 43974462Salfred syslog(LOG_WARNING, "can't register UDP6 RPCMNT_VER3 service"); 44074462Salfred else 44174462Salfred xcreated++; 44274462Salfred } 44374462Salfred } else 44474462Salfred syslog(LOG_WARNING, "can't create UDP6 service"); 44574462Salfred 44674462Salfred } 44774791Salfred if (have_v6 && tcp6sock != -1 && tcp6conf != NULL) { 44874462Salfred bindresvport(tcp6sock, NULL); 44974462Salfred listen(tcp6sock, SOMAXCONN); 45074462Salfred tcp6transp = svc_vc_create(tcp6sock, 0, 0); 45174462Salfred if (tcp6transp != NULL) { 45274462Salfred if (!svc_reg(tcp6transp, RPCPROG_MNT, RPCMNT_VER1, 45374462Salfred mntsrv, tcp6conf)) 45474462Salfred syslog(LOG_WARNING, "can't register TCP6 RPCMNT_VER1 service"); 45574462Salfred else 45674462Salfred xcreated++; 45774462Salfred if (!force_v2) { 45874462Salfred if (!svc_reg(tcp6transp, RPCPROG_MNT, RPCMNT_VER3, 45974462Salfred mntsrv, tcp6conf)) 46074462Salfred syslog(LOG_WARNING, "can't register TCP6 RPCMNT_VER3 service"); 46174462Salfred else 46274462Salfred xcreated++; 46374462Salfred } 46474462Salfred } else 46574462Salfred syslog(LOG_WARNING, "can't create TCP6 service"); 46674462Salfred 46774462Salfred } 46874462Salfred if (xcreated == 0) { 46974462Salfred syslog(LOG_ERR, "could not create any services"); 4701558Srgrimes exit(1); 4711558Srgrimes } 47275754Siedowse 47375754Siedowse /* Expand svc_run() here so that we can call get_exportlist(). */ 47475754Siedowse for (;;) { 47575754Siedowse if (got_sighup) { 47675754Siedowse get_exportlist(); 47775754Siedowse got_sighup = 0; 47875754Siedowse } 47975754Siedowse readfds = svc_fdset; 48075754Siedowse switch (select(svc_maxfd + 1, &readfds, NULL, NULL, NULL)) { 48175754Siedowse case -1: 48275754Siedowse if (errno == EINTR) 48375754Siedowse continue; 48475754Siedowse syslog(LOG_ERR, "mountd died: select: %m"); 48575754Siedowse exit(1); 48675754Siedowse case 0: 48775754Siedowse continue; 48875754Siedowse default: 48975754Siedowse svc_getreqset(&readfds); 49075754Siedowse } 49175754Siedowse } 4921558Srgrimes} 4931558Srgrimes 49437663Scharnierstatic void 49537663Scharnierusage() 49637663Scharnier{ 49737663Scharnier fprintf(stderr, 49837663Scharnier "usage: mountd [-2] [-d] [-l] [-n] [-r] [export_file]\n"); 49937663Scharnier exit(1); 50037663Scharnier} 50137663Scharnier 5021558Srgrimes/* 5031558Srgrimes * The mount rpc service 5041558Srgrimes */ 5051558Srgrimesvoid 5061558Srgrimesmntsrv(rqstp, transp) 5071558Srgrimes struct svc_req *rqstp; 5081558Srgrimes SVCXPRT *transp; 5091558Srgrimes{ 5101558Srgrimes struct exportlist *ep; 5111558Srgrimes struct dirlist *dp; 5129336Sdfr struct fhreturn fhr; 5131558Srgrimes struct stat stb; 5141558Srgrimes struct statfs fsb; 51574462Salfred struct addrinfo *ai; 51674462Salfred char host[NI_MAXHOST], numerichost[NI_MAXHOST]; 51774462Salfred int lookup_failed = 1; 51874462Salfred struct sockaddr *saddr; 5199336Sdfr u_short sport; 52023681Speter char rpcpath[RPCMNT_PATHLEN + 1], dirpath[MAXPATHLEN]; 52128911Sguido int bad = 0, defset, hostset; 5229336Sdfr sigset_t sighup_mask; 5231558Srgrimes 5249336Sdfr sigemptyset(&sighup_mask); 5259336Sdfr sigaddset(&sighup_mask, SIGHUP); 52674462Salfred saddr = svc_getrpccaller(transp)->buf; 52774462Salfred switch (saddr->sa_family) { 52874462Salfred case AF_INET6: 52975635Siedowse sport = ntohs(((struct sockaddr_in6 *)saddr)->sin6_port); 53074462Salfred break; 53174462Salfred case AF_INET: 53275635Siedowse sport = ntohs(((struct sockaddr_in *)saddr)->sin_port); 53374462Salfred break; 53474462Salfred default: 53574462Salfred syslog(LOG_ERR, "request from unknown address family"); 53674462Salfred return; 53774462Salfred } 53874462Salfred lookup_failed = getnameinfo(saddr, saddr->sa_len, host, sizeof host, 53974462Salfred NULL, 0, 0); 54074462Salfred getnameinfo(saddr, saddr->sa_len, numerichost, 54174462Salfred sizeof numerichost, NULL, 0, NI_NUMERICHOST); 54274462Salfred ai = NULL; 5431558Srgrimes switch (rqstp->rq_proc) { 5441558Srgrimes case NULLPROC: 545100117Salfred if (!svc_sendreply(transp, xdr_void, NULL)) 54637663Scharnier syslog(LOG_ERR, "can't send reply"); 5471558Srgrimes return; 5481558Srgrimes case RPCMNT_MOUNT: 5499336Sdfr if (sport >= IPPORT_RESERVED && resvport_only) { 55031656Sguido syslog(LOG_NOTICE, 55131656Sguido "mount request from %s from unprivileged port", 55274462Salfred numerichost); 5531558Srgrimes svcerr_weakauth(transp); 5541558Srgrimes return; 5551558Srgrimes } 5561558Srgrimes if (!svc_getargs(transp, xdr_dir, rpcpath)) { 55731656Sguido syslog(LOG_NOTICE, "undecodable mount request from %s", 55874462Salfred numerichost); 5591558Srgrimes svcerr_decode(transp); 5601558Srgrimes return; 5611558Srgrimes } 5621558Srgrimes 5631558Srgrimes /* 5641558Srgrimes * Get the real pathname and make sure it is a directory 5659336Sdfr * or a regular file if the -r option was specified 5669336Sdfr * and it exists. 5671558Srgrimes */ 56851968Salfred if (realpath(rpcpath, dirpath) == NULL || 5691558Srgrimes stat(dirpath, &stb) < 0 || 5709336Sdfr (!S_ISDIR(stb.st_mode) && 57174462Salfred (dir_only || !S_ISREG(stb.st_mode))) || 5721558Srgrimes statfs(dirpath, &fsb) < 0) { 5731558Srgrimes chdir("/"); /* Just in case realpath doesn't */ 57431656Sguido syslog(LOG_NOTICE, 57537663Scharnier "mount request from %s for non existent path %s", 57674462Salfred numerichost, dirpath); 5771558Srgrimes if (debug) 57837663Scharnier warnx("stat failed on %s", dirpath); 57928911Sguido bad = ENOENT; /* We will send error reply later */ 5801558Srgrimes } 5811558Srgrimes 5821558Srgrimes /* Check in the exports list */ 5839336Sdfr sigprocmask(SIG_BLOCK, &sighup_mask, NULL); 5841558Srgrimes ep = ex_search(&fsb.f_fsid); 5859336Sdfr hostset = defset = 0; 5869336Sdfr if (ep && (chk_host(ep->ex_defdir, saddr, &defset, &hostset) || 5871558Srgrimes ((dp = dirp_search(ep->ex_dirl, dirpath)) && 58874462Salfred chk_host(dp, saddr, &defset, &hostset)) || 58974462Salfred (defset && scan_tree(ep->ex_defdir, saddr) == 0 && 59074462Salfred scan_tree(ep->ex_dirl, saddr) == 0))) { 59128911Sguido if (bad) { 59228911Sguido if (!svc_sendreply(transp, xdr_long, 59328911Sguido (caddr_t)&bad)) 59437663Scharnier syslog(LOG_ERR, "can't send reply"); 59528911Sguido sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 59628911Sguido return; 59728911Sguido } 5989336Sdfr if (hostset & DP_HOSTSET) 5999336Sdfr fhr.fhr_flag = hostset; 6009336Sdfr else 6019336Sdfr fhr.fhr_flag = defset; 6029336Sdfr fhr.fhr_vers = rqstp->rq_vers; 6031558Srgrimes /* Get the file handle */ 60423681Speter memset(&fhr.fhr_fh, 0, sizeof(nfsfh_t)); 6059336Sdfr if (getfh(dirpath, (fhandle_t *)&fhr.fhr_fh) < 0) { 6061558Srgrimes bad = errno; 60737663Scharnier syslog(LOG_ERR, "can't get fh for %s", dirpath); 6081558Srgrimes if (!svc_sendreply(transp, xdr_long, 6091558Srgrimes (caddr_t)&bad)) 61037663Scharnier syslog(LOG_ERR, "can't send reply"); 6119336Sdfr sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 6121558Srgrimes return; 6131558Srgrimes } 6149336Sdfr if (!svc_sendreply(transp, xdr_fhs, (caddr_t)&fhr)) 61537663Scharnier syslog(LOG_ERR, "can't send reply"); 61674462Salfred if (!lookup_failed) 61774462Salfred add_mlist(host, dirpath); 6181558Srgrimes else 61974462Salfred add_mlist(numerichost, dirpath); 6201558Srgrimes if (debug) 62137663Scharnier warnx("mount successful"); 62231656Sguido if (log) 62331656Sguido syslog(LOG_NOTICE, 62431656Sguido "mount request succeeded from %s for %s", 62574462Salfred numerichost, dirpath); 62631656Sguido } else { 6271558Srgrimes bad = EACCES; 62831656Sguido syslog(LOG_NOTICE, 62931656Sguido "mount request denied from %s for %s", 63074462Salfred numerichost, dirpath); 63131656Sguido } 63228911Sguido 63328911Sguido if (bad && !svc_sendreply(transp, xdr_long, (caddr_t)&bad)) 63437663Scharnier syslog(LOG_ERR, "can't send reply"); 6359336Sdfr sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 6361558Srgrimes return; 6371558Srgrimes case RPCMNT_DUMP: 6381558Srgrimes if (!svc_sendreply(transp, xdr_mlist, (caddr_t)NULL)) 63937663Scharnier syslog(LOG_ERR, "can't send reply"); 64031656Sguido else if (log) 64131656Sguido syslog(LOG_NOTICE, 64231656Sguido "dump request succeeded from %s", 64374462Salfred numerichost); 6441558Srgrimes return; 6451558Srgrimes case RPCMNT_UMOUNT: 6469336Sdfr if (sport >= IPPORT_RESERVED && resvport_only) { 64731656Sguido syslog(LOG_NOTICE, 64831656Sguido "umount request from %s from unprivileged port", 64974462Salfred numerichost); 6501558Srgrimes svcerr_weakauth(transp); 6511558Srgrimes return; 6521558Srgrimes } 65351968Salfred if (!svc_getargs(transp, xdr_dir, rpcpath)) { 65431656Sguido syslog(LOG_NOTICE, "undecodable umount request from %s", 65574462Salfred numerichost); 6561558Srgrimes svcerr_decode(transp); 6571558Srgrimes return; 6581558Srgrimes } 65951968Salfred if (realpath(rpcpath, dirpath) == NULL) { 66051968Salfred syslog(LOG_NOTICE, "umount request from %s " 66151968Salfred "for non existent path %s", 66274462Salfred numerichost, dirpath); 66351968Salfred } 6641558Srgrimes if (!svc_sendreply(transp, xdr_void, (caddr_t)NULL)) 66537663Scharnier syslog(LOG_ERR, "can't send reply"); 66674462Salfred if (!lookup_failed) 66775635Siedowse del_mlist(host, dirpath); 66875635Siedowse del_mlist(numerichost, dirpath); 66931656Sguido if (log) 67031656Sguido syslog(LOG_NOTICE, 67131656Sguido "umount request succeeded from %s for %s", 67274462Salfred numerichost, dirpath); 6731558Srgrimes return; 6741558Srgrimes case RPCMNT_UMNTALL: 6759336Sdfr if (sport >= IPPORT_RESERVED && resvport_only) { 67631656Sguido syslog(LOG_NOTICE, 67731656Sguido "umountall request from %s from unprivileged port", 67874462Salfred numerichost); 6791558Srgrimes svcerr_weakauth(transp); 6801558Srgrimes return; 6811558Srgrimes } 6821558Srgrimes if (!svc_sendreply(transp, xdr_void, (caddr_t)NULL)) 68337663Scharnier syslog(LOG_ERR, "can't send reply"); 68474462Salfred if (!lookup_failed) 68575635Siedowse del_mlist(host, NULL); 68675635Siedowse del_mlist(numerichost, NULL); 68731656Sguido if (log) 68831656Sguido syslog(LOG_NOTICE, 68931656Sguido "umountall request succeeded from %s", 69074462Salfred numerichost); 6911558Srgrimes return; 6921558Srgrimes case RPCMNT_EXPORT: 6931558Srgrimes if (!svc_sendreply(transp, xdr_explist, (caddr_t)NULL)) 694100117Salfred if (!svc_sendreply(transp, xdr_explist_brief, (caddr_t)NULL)) 695100117Salfred syslog(LOG_ERR, "can't send reply"); 69631656Sguido if (log) 69731656Sguido syslog(LOG_NOTICE, 69831656Sguido "export request succeeded from %s", 69974462Salfred numerichost); 7001558Srgrimes return; 7011558Srgrimes default: 7021558Srgrimes svcerr_noproc(transp); 7031558Srgrimes return; 7041558Srgrimes } 7051558Srgrimes} 7061558Srgrimes 7071558Srgrimes/* 7081558Srgrimes * Xdr conversion for a dirpath string 7091558Srgrimes */ 7101558Srgrimesint 7111558Srgrimesxdr_dir(xdrsp, dirp) 7121558Srgrimes XDR *xdrsp; 7131558Srgrimes char *dirp; 7141558Srgrimes{ 7151558Srgrimes return (xdr_string(xdrsp, &dirp, RPCMNT_PATHLEN)); 7161558Srgrimes} 7171558Srgrimes 7181558Srgrimes/* 7199336Sdfr * Xdr routine to generate file handle reply 7201558Srgrimes */ 7211558Srgrimesint 7229336Sdfrxdr_fhs(xdrsp, cp) 7231558Srgrimes XDR *xdrsp; 7249336Sdfr caddr_t cp; 7251558Srgrimes{ 72692806Sobrien struct fhreturn *fhrp = (struct fhreturn *)cp; 7279336Sdfr u_long ok = 0, len, auth; 7281558Srgrimes 7291558Srgrimes if (!xdr_long(xdrsp, &ok)) 7301558Srgrimes return (0); 7319336Sdfr switch (fhrp->fhr_vers) { 7329336Sdfr case 1: 7339336Sdfr return (xdr_opaque(xdrsp, (caddr_t)&fhrp->fhr_fh, NFSX_V2FH)); 7349336Sdfr case 3: 7359336Sdfr len = NFSX_V3FH; 7369336Sdfr if (!xdr_long(xdrsp, &len)) 7379336Sdfr return (0); 7389336Sdfr if (!xdr_opaque(xdrsp, (caddr_t)&fhrp->fhr_fh, len)) 7399336Sdfr return (0); 74083653Speter auth = RPCAUTH_UNIX; 7419336Sdfr len = 1; 7429336Sdfr if (!xdr_long(xdrsp, &len)) 7439336Sdfr return (0); 7449336Sdfr return (xdr_long(xdrsp, &auth)); 7459336Sdfr }; 7469336Sdfr return (0); 7471558Srgrimes} 7481558Srgrimes 7491558Srgrimesint 7501558Srgrimesxdr_mlist(xdrsp, cp) 7511558Srgrimes XDR *xdrsp; 7521558Srgrimes caddr_t cp; 7531558Srgrimes{ 7541558Srgrimes struct mountlist *mlp; 7551558Srgrimes int true = 1; 7561558Srgrimes int false = 0; 7571558Srgrimes char *strp; 7581558Srgrimes 7591558Srgrimes mlp = mlhead; 7601558Srgrimes while (mlp) { 7611558Srgrimes if (!xdr_bool(xdrsp, &true)) 7621558Srgrimes return (0); 7631558Srgrimes strp = &mlp->ml_host[0]; 7641558Srgrimes if (!xdr_string(xdrsp, &strp, RPCMNT_NAMELEN)) 7651558Srgrimes return (0); 7661558Srgrimes strp = &mlp->ml_dirp[0]; 7671558Srgrimes if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN)) 7681558Srgrimes return (0); 7691558Srgrimes mlp = mlp->ml_next; 7701558Srgrimes } 7711558Srgrimes if (!xdr_bool(xdrsp, &false)) 7721558Srgrimes return (0); 7731558Srgrimes return (1); 7741558Srgrimes} 7751558Srgrimes 7761558Srgrimes/* 7771558Srgrimes * Xdr conversion for export list 7781558Srgrimes */ 7791558Srgrimesint 780100117Salfredxdr_explist_common(xdrsp, cp, brief) 7811558Srgrimes XDR *xdrsp; 7821558Srgrimes caddr_t cp; 783100117Salfred int brief; 7841558Srgrimes{ 7851558Srgrimes struct exportlist *ep; 7861558Srgrimes int false = 0; 7879336Sdfr int putdef; 7889336Sdfr sigset_t sighup_mask; 7891558Srgrimes 7909336Sdfr sigemptyset(&sighup_mask); 7919336Sdfr sigaddset(&sighup_mask, SIGHUP); 7929336Sdfr sigprocmask(SIG_BLOCK, &sighup_mask, NULL); 7931558Srgrimes ep = exphead; 7941558Srgrimes while (ep) { 7951558Srgrimes putdef = 0; 796100117Salfred if (put_exlist(ep->ex_dirl, xdrsp, ep->ex_defdir, 797100117Salfred &putdef, brief)) 7981558Srgrimes goto errout; 7991558Srgrimes if (ep->ex_defdir && putdef == 0 && 8001558Srgrimes put_exlist(ep->ex_defdir, xdrsp, (struct dirlist *)NULL, 801100117Salfred &putdef, brief)) 8021558Srgrimes goto errout; 8031558Srgrimes ep = ep->ex_next; 8041558Srgrimes } 8059336Sdfr sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 8061558Srgrimes if (!xdr_bool(xdrsp, &false)) 8071558Srgrimes return (0); 8081558Srgrimes return (1); 8091558Srgrimeserrout: 8109336Sdfr sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 8111558Srgrimes return (0); 8121558Srgrimes} 8131558Srgrimes 8141558Srgrimes/* 8151558Srgrimes * Called from xdr_explist() to traverse the tree and export the 8161558Srgrimes * directory paths. 8171558Srgrimes */ 8181558Srgrimesint 819100117Salfredput_exlist(dp, xdrsp, adp, putdefp, brief) 8201558Srgrimes struct dirlist *dp; 8211558Srgrimes XDR *xdrsp; 8221558Srgrimes struct dirlist *adp; 8231558Srgrimes int *putdefp; 824100117Salfred int brief; 8251558Srgrimes{ 8261558Srgrimes struct grouplist *grp; 8271558Srgrimes struct hostlist *hp; 8281558Srgrimes int true = 1; 8291558Srgrimes int false = 0; 8301558Srgrimes int gotalldir = 0; 8311558Srgrimes char *strp; 8321558Srgrimes 8331558Srgrimes if (dp) { 834100117Salfred if (put_exlist(dp->dp_left, xdrsp, adp, putdefp, brief)) 8351558Srgrimes return (1); 8361558Srgrimes if (!xdr_bool(xdrsp, &true)) 8371558Srgrimes return (1); 8381558Srgrimes strp = dp->dp_dirp; 8391558Srgrimes if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN)) 8401558Srgrimes return (1); 8411558Srgrimes if (adp && !strcmp(dp->dp_dirp, adp->dp_dirp)) { 8421558Srgrimes gotalldir = 1; 8431558Srgrimes *putdefp = 1; 8441558Srgrimes } 845100117Salfred if (brief) { 846100117Salfred if (!xdr_bool(xdrsp, &true)) 847100117Salfred return (1); 848100117Salfred strp = "(...)"; 849100117Salfred if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN)) 850100117Salfred return (1); 851100117Salfred } else if ((dp->dp_flag & DP_DEFSET) == 0 && 8521558Srgrimes (gotalldir == 0 || (adp->dp_flag & DP_DEFSET) == 0)) { 8531558Srgrimes hp = dp->dp_hosts; 8541558Srgrimes while (hp) { 8551558Srgrimes grp = hp->ht_grp; 8561558Srgrimes if (grp->gr_type == GT_HOST) { 8571558Srgrimes if (!xdr_bool(xdrsp, &true)) 8581558Srgrimes return (1); 85974462Salfred strp = grp->gr_ptr.gt_addrinfo->ai_canonname; 8608871Srgrimes if (!xdr_string(xdrsp, &strp, 8611558Srgrimes RPCMNT_NAMELEN)) 8621558Srgrimes return (1); 8631558Srgrimes } else if (grp->gr_type == GT_NET) { 8641558Srgrimes if (!xdr_bool(xdrsp, &true)) 8651558Srgrimes return (1); 8661558Srgrimes strp = grp->gr_ptr.gt_net.nt_name; 8678871Srgrimes if (!xdr_string(xdrsp, &strp, 8681558Srgrimes RPCMNT_NAMELEN)) 8691558Srgrimes return (1); 8701558Srgrimes } 8711558Srgrimes hp = hp->ht_next; 8721558Srgrimes if (gotalldir && hp == (struct hostlist *)NULL) { 8731558Srgrimes hp = adp->dp_hosts; 8741558Srgrimes gotalldir = 0; 8751558Srgrimes } 8761558Srgrimes } 8771558Srgrimes } 8781558Srgrimes if (!xdr_bool(xdrsp, &false)) 8791558Srgrimes return (1); 880100117Salfred if (put_exlist(dp->dp_right, xdrsp, adp, putdefp, brief)) 8811558Srgrimes return (1); 8821558Srgrimes } 8831558Srgrimes return (0); 8841558Srgrimes} 8851558Srgrimes 886100117Salfredint 887100117Salfredxdr_explist(xdrsp, cp) 888100117Salfred XDR *xdrsp; 889100117Salfred caddr_t cp; 890100117Salfred{ 891100117Salfred 892100117Salfred return xdr_explist_common(xdrsp, cp, 0); 893100117Salfred} 894100117Salfred 895100117Salfredint 896100117Salfredxdr_explist_brief(xdrsp, cp) 897100117Salfred XDR *xdrsp; 898100117Salfred caddr_t cp; 899100117Salfred{ 900100117Salfred 901100117Salfred return xdr_explist_common(xdrsp, cp, 1); 902100117Salfred} 903100117Salfred 90496622Siedowsechar *line; 90596622Siedowseint linesize; 9061558SrgrimesFILE *exp_file; 9071558Srgrimes 9081558Srgrimes/* 9091558Srgrimes * Get the export list 9101558Srgrimes */ 9111558Srgrimesvoid 9121558Srgrimesget_exportlist() 9131558Srgrimes{ 9141558Srgrimes struct exportlist *ep, *ep2; 9151558Srgrimes struct grouplist *grp, *tgrp; 9161558Srgrimes struct exportlist **epp; 9171558Srgrimes struct dirlist *dirhead; 9181558Srgrimes struct statfs fsb, *fsp; 91972650Sgreen struct xucred anon; 9201558Srgrimes char *cp, *endcp, *dirp, *hst, *usr, *dom, savedc; 9211558Srgrimes int len, has_host, exflags, got_nondir, dirplen, num, i, netgrp; 9221558Srgrimes 92351968Salfred dirp = NULL; 92451968Salfred dirplen = 0; 92551968Salfred 9261558Srgrimes /* 9271558Srgrimes * First, get rid of the old list 9281558Srgrimes */ 9291558Srgrimes ep = exphead; 9301558Srgrimes while (ep) { 9311558Srgrimes ep2 = ep; 9321558Srgrimes ep = ep->ex_next; 9331558Srgrimes free_exp(ep2); 9341558Srgrimes } 9351558Srgrimes exphead = (struct exportlist *)NULL; 9361558Srgrimes 9371558Srgrimes grp = grphead; 9381558Srgrimes while (grp) { 9391558Srgrimes tgrp = grp; 9401558Srgrimes grp = grp->gr_next; 9411558Srgrimes free_grp(tgrp); 9421558Srgrimes } 9431558Srgrimes grphead = (struct grouplist *)NULL; 9441558Srgrimes 9451558Srgrimes /* 9461558Srgrimes * And delete exports that are in the kernel for all local 94796707Strhodes * filesystems. 94896707Strhodes * XXX: Should know how to handle all local exportable filesystems 94923681Speter * instead of just "ufs". 9501558Srgrimes */ 9511558Srgrimes num = getmntinfo(&fsp, MNT_NOWAIT); 9521558Srgrimes for (i = 0; i < num; i++) { 9531558Srgrimes union { 9541558Srgrimes struct ufs_args ua; 9551558Srgrimes struct iso_args ia; 9569336Sdfr struct msdosfs_args da; 95754093Ssemenu struct ntfs_args na; 9581558Srgrimes } targs; 9591558Srgrimes 96077435Sphk if (!strcmp(fsp->f_fstypename, "ufs") || 96177577Sru !strcmp(fsp->f_fstypename, "msdosfs") || 96254093Ssemenu !strcmp(fsp->f_fstypename, "ntfs") || 96323681Speter !strcmp(fsp->f_fstypename, "cd9660")) { 9649336Sdfr targs.ua.fspec = NULL; 9659336Sdfr targs.ua.export.ex_flags = MNT_DELEXPORT; 9669336Sdfr if (mount(fsp->f_fstypename, fsp->f_mntonname, 96777405Siedowse fsp->f_flags | MNT_UPDATE, (caddr_t)&targs) < 0 && 96877405Siedowse errno != ENOENT) 96977405Siedowse syslog(LOG_ERR, 97077405Siedowse "can't delete exports for %s: %m", 97174462Salfred fsp->f_mntonname); 9721558Srgrimes } 9731558Srgrimes fsp++; 9741558Srgrimes } 9751558Srgrimes 9761558Srgrimes /* 9771558Srgrimes * Read in the exports file and build the list, calling 9781558Srgrimes * mount() as we go along to push the export rules into the kernel. 9791558Srgrimes */ 9801558Srgrimes if ((exp_file = fopen(exname, "r")) == NULL) { 98137663Scharnier syslog(LOG_ERR, "can't open %s", exname); 9821558Srgrimes exit(2); 9831558Srgrimes } 9841558Srgrimes dirhead = (struct dirlist *)NULL; 9851558Srgrimes while (get_line()) { 9861558Srgrimes if (debug) 98737663Scharnier warnx("got line %s", line); 9881558Srgrimes cp = line; 9891558Srgrimes nextfield(&cp, &endcp); 9901558Srgrimes if (*cp == '#') 9911558Srgrimes goto nextline; 9921558Srgrimes 9931558Srgrimes /* 9941558Srgrimes * Set defaults. 9951558Srgrimes */ 9961558Srgrimes has_host = FALSE; 9971558Srgrimes anon = def_anon; 9981558Srgrimes exflags = MNT_EXPORTED; 9991558Srgrimes got_nondir = 0; 10001558Srgrimes opt_flags = 0; 10011558Srgrimes ep = (struct exportlist *)NULL; 10021558Srgrimes 10031558Srgrimes /* 10041558Srgrimes * Create new exports list entry 10051558Srgrimes */ 10061558Srgrimes len = endcp-cp; 10071558Srgrimes tgrp = grp = get_grp(); 10081558Srgrimes while (len > 0) { 10091558Srgrimes if (len > RPCMNT_NAMELEN) { 10101558Srgrimes getexp_err(ep, tgrp); 10111558Srgrimes goto nextline; 10121558Srgrimes } 10131558Srgrimes if (*cp == '-') { 10141558Srgrimes if (ep == (struct exportlist *)NULL) { 10151558Srgrimes getexp_err(ep, tgrp); 10161558Srgrimes goto nextline; 10171558Srgrimes } 10181558Srgrimes if (debug) 101937663Scharnier warnx("doing opt %s", cp); 10201558Srgrimes got_nondir = 1; 10211558Srgrimes if (do_opt(&cp, &endcp, ep, grp, &has_host, 10221558Srgrimes &exflags, &anon)) { 10231558Srgrimes getexp_err(ep, tgrp); 10241558Srgrimes goto nextline; 10251558Srgrimes } 10261558Srgrimes } else if (*cp == '/') { 10271558Srgrimes savedc = *endcp; 10281558Srgrimes *endcp = '\0'; 10291558Srgrimes if (check_dirpath(cp) && 10301558Srgrimes statfs(cp, &fsb) >= 0) { 10311558Srgrimes if (got_nondir) { 103237663Scharnier syslog(LOG_ERR, "dirs must be first"); 10331558Srgrimes getexp_err(ep, tgrp); 10341558Srgrimes goto nextline; 10351558Srgrimes } 10361558Srgrimes if (ep) { 10371558Srgrimes if (ep->ex_fs.val[0] != fsb.f_fsid.val[0] || 10381558Srgrimes ep->ex_fs.val[1] != fsb.f_fsid.val[1]) { 10391558Srgrimes getexp_err(ep, tgrp); 10401558Srgrimes goto nextline; 10411558Srgrimes } 10421558Srgrimes } else { 10431558Srgrimes /* 10441558Srgrimes * See if this directory is already 10451558Srgrimes * in the list. 10461558Srgrimes */ 10471558Srgrimes ep = ex_search(&fsb.f_fsid); 10481558Srgrimes if (ep == (struct exportlist *)NULL) { 10491558Srgrimes ep = get_exp(); 10501558Srgrimes ep->ex_fs = fsb.f_fsid; 10511558Srgrimes ep->ex_fsdir = (char *) 10521558Srgrimes malloc(strlen(fsb.f_mntonname) + 1); 10531558Srgrimes if (ep->ex_fsdir) 10541558Srgrimes strcpy(ep->ex_fsdir, 10551558Srgrimes fsb.f_mntonname); 10561558Srgrimes else 10571558Srgrimes out_of_mem(); 10581558Srgrimes if (debug) 105974462Salfred warnx("making new ep fs=0x%x,0x%x", 106074462Salfred fsb.f_fsid.val[0], 106174462Salfred fsb.f_fsid.val[1]); 10621558Srgrimes } else if (debug) 106337663Scharnier warnx("found ep fs=0x%x,0x%x", 10641558Srgrimes fsb.f_fsid.val[0], 10651558Srgrimes fsb.f_fsid.val[1]); 10661558Srgrimes } 10671558Srgrimes 10681558Srgrimes /* 10691558Srgrimes * Add dirpath to export mount point. 10701558Srgrimes */ 10711558Srgrimes dirp = add_expdir(&dirhead, cp, len); 10721558Srgrimes dirplen = len; 10731558Srgrimes } else { 10741558Srgrimes getexp_err(ep, tgrp); 10751558Srgrimes goto nextline; 10761558Srgrimes } 10771558Srgrimes *endcp = savedc; 10781558Srgrimes } else { 10791558Srgrimes savedc = *endcp; 10801558Srgrimes *endcp = '\0'; 10811558Srgrimes got_nondir = 1; 10821558Srgrimes if (ep == (struct exportlist *)NULL) { 10831558Srgrimes getexp_err(ep, tgrp); 10841558Srgrimes goto nextline; 10851558Srgrimes } 10861558Srgrimes 10871558Srgrimes /* 10881558Srgrimes * Get the host or netgroup. 10891558Srgrimes */ 10901558Srgrimes setnetgrent(cp); 10911558Srgrimes netgrp = getnetgrent(&hst, &usr, &dom); 10921558Srgrimes do { 10931558Srgrimes if (has_host) { 10941558Srgrimes grp->gr_next = get_grp(); 10951558Srgrimes grp = grp->gr_next; 10961558Srgrimes } 10971558Srgrimes if (netgrp) { 109837003Sjoerg if (hst == 0) { 109937663Scharnier syslog(LOG_ERR, 110037663Scharnier "null hostname in netgroup %s, skipping", cp); 110137004Sjoerg grp->gr_type = GT_IGNORE; 110237003Sjoerg } else if (get_host(hst, grp, tgrp)) { 110337663Scharnier syslog(LOG_ERR, 110437663Scharnier "bad host %s in netgroup %s, skipping", hst, cp); 110529317Sjlemon grp->gr_type = GT_IGNORE; 11061558Srgrimes } 11077401Swpaul } else if (get_host(cp, grp, tgrp)) { 110837663Scharnier syslog(LOG_ERR, "bad host %s, skipping", cp); 110929317Sjlemon grp->gr_type = GT_IGNORE; 11101558Srgrimes } 11111558Srgrimes has_host = TRUE; 11121558Srgrimes } while (netgrp && getnetgrent(&hst, &usr, &dom)); 11131558Srgrimes endnetgrent(); 11141558Srgrimes *endcp = savedc; 11151558Srgrimes } 11161558Srgrimes cp = endcp; 11171558Srgrimes nextfield(&cp, &endcp); 11181558Srgrimes len = endcp - cp; 11191558Srgrimes } 11201558Srgrimes if (check_options(dirhead)) { 11211558Srgrimes getexp_err(ep, tgrp); 11221558Srgrimes goto nextline; 11231558Srgrimes } 11241558Srgrimes if (!has_host) { 112575641Siedowse grp->gr_type = GT_DEFAULT; 11261558Srgrimes if (debug) 112737663Scharnier warnx("adding a default entry"); 11281558Srgrimes 11291558Srgrimes /* 11301558Srgrimes * Don't allow a network export coincide with a list of 11311558Srgrimes * host(s) on the same line. 11321558Srgrimes */ 11331558Srgrimes } else if ((opt_flags & OP_NET) && tgrp->gr_next) { 113475801Siedowse syslog(LOG_ERR, "network/host conflict"); 11351558Srgrimes getexp_err(ep, tgrp); 11361558Srgrimes goto nextline; 113729317Sjlemon 113874462Salfred /* 113974462Salfred * If an export list was specified on this line, make sure 114029317Sjlemon * that we have at least one valid entry, otherwise skip it. 114129317Sjlemon */ 114229317Sjlemon } else { 114329317Sjlemon grp = tgrp; 114474462Salfred while (grp && grp->gr_type == GT_IGNORE) 114529317Sjlemon grp = grp->gr_next; 114629317Sjlemon if (! grp) { 114729317Sjlemon getexp_err(ep, tgrp); 114829317Sjlemon goto nextline; 114929317Sjlemon } 11501558Srgrimes } 11511558Srgrimes 11521558Srgrimes /* 11531558Srgrimes * Loop through hosts, pushing the exports into the kernel. 11541558Srgrimes * After loop, tgrp points to the start of the list and 11551558Srgrimes * grp points to the last entry in the list. 11561558Srgrimes */ 11571558Srgrimes grp = tgrp; 11581558Srgrimes do { 115975635Siedowse if (do_mount(ep, grp, exflags, &anon, dirp, dirplen, 116075635Siedowse &fsb)) { 116175635Siedowse getexp_err(ep, tgrp); 116275635Siedowse goto nextline; 116375635Siedowse } 11641558Srgrimes } while (grp->gr_next && (grp = grp->gr_next)); 11651558Srgrimes 11661558Srgrimes /* 11671558Srgrimes * Success. Update the data structures. 11681558Srgrimes */ 11691558Srgrimes if (has_host) { 11709336Sdfr hang_dirp(dirhead, tgrp, ep, opt_flags); 11711558Srgrimes grp->gr_next = grphead; 11721558Srgrimes grphead = tgrp; 11731558Srgrimes } else { 11741558Srgrimes hang_dirp(dirhead, (struct grouplist *)NULL, ep, 11759336Sdfr opt_flags); 11761558Srgrimes free_grp(grp); 11771558Srgrimes } 11781558Srgrimes dirhead = (struct dirlist *)NULL; 11791558Srgrimes if ((ep->ex_flag & EX_LINKED) == 0) { 11801558Srgrimes ep2 = exphead; 11811558Srgrimes epp = &exphead; 11821558Srgrimes 11831558Srgrimes /* 11841558Srgrimes * Insert in the list in alphabetical order. 11851558Srgrimes */ 11861558Srgrimes while (ep2 && strcmp(ep2->ex_fsdir, ep->ex_fsdir) < 0) { 11871558Srgrimes epp = &ep2->ex_next; 11881558Srgrimes ep2 = ep2->ex_next; 11891558Srgrimes } 11901558Srgrimes if (ep2) 11911558Srgrimes ep->ex_next = ep2; 11921558Srgrimes *epp = ep; 11931558Srgrimes ep->ex_flag |= EX_LINKED; 11941558Srgrimes } 11951558Srgrimesnextline: 11961558Srgrimes if (dirhead) { 11971558Srgrimes free_dir(dirhead); 11981558Srgrimes dirhead = (struct dirlist *)NULL; 11991558Srgrimes } 12001558Srgrimes } 12011558Srgrimes fclose(exp_file); 12021558Srgrimes} 12031558Srgrimes 12041558Srgrimes/* 12051558Srgrimes * Allocate an export list element 12061558Srgrimes */ 12071558Srgrimesstruct exportlist * 12081558Srgrimesget_exp() 12091558Srgrimes{ 12101558Srgrimes struct exportlist *ep; 12111558Srgrimes 12121558Srgrimes ep = (struct exportlist *)malloc(sizeof (struct exportlist)); 12131558Srgrimes if (ep == (struct exportlist *)NULL) 12141558Srgrimes out_of_mem(); 121523681Speter memset(ep, 0, sizeof(struct exportlist)); 12161558Srgrimes return (ep); 12171558Srgrimes} 12181558Srgrimes 12191558Srgrimes/* 12201558Srgrimes * Allocate a group list element 12211558Srgrimes */ 12221558Srgrimesstruct grouplist * 12231558Srgrimesget_grp() 12241558Srgrimes{ 12251558Srgrimes struct grouplist *gp; 12261558Srgrimes 12271558Srgrimes gp = (struct grouplist *)malloc(sizeof (struct grouplist)); 12281558Srgrimes if (gp == (struct grouplist *)NULL) 12291558Srgrimes out_of_mem(); 123023681Speter memset(gp, 0, sizeof(struct grouplist)); 12311558Srgrimes return (gp); 12321558Srgrimes} 12331558Srgrimes 12341558Srgrimes/* 12351558Srgrimes * Clean up upon an error in get_exportlist(). 12361558Srgrimes */ 12371558Srgrimesvoid 12381558Srgrimesgetexp_err(ep, grp) 12391558Srgrimes struct exportlist *ep; 12401558Srgrimes struct grouplist *grp; 12411558Srgrimes{ 12421558Srgrimes struct grouplist *tgrp; 12431558Srgrimes 1244100336Sjoerg if (!(opt_flags & OP_QUIET)) 1245100336Sjoerg syslog(LOG_ERR, "bad exports list line %s", line); 12461558Srgrimes if (ep && (ep->ex_flag & EX_LINKED) == 0) 12471558Srgrimes free_exp(ep); 12481558Srgrimes while (grp) { 12491558Srgrimes tgrp = grp; 12501558Srgrimes grp = grp->gr_next; 12511558Srgrimes free_grp(tgrp); 12521558Srgrimes } 12531558Srgrimes} 12541558Srgrimes 12551558Srgrimes/* 12561558Srgrimes * Search the export list for a matching fs. 12571558Srgrimes */ 12581558Srgrimesstruct exportlist * 12591558Srgrimesex_search(fsid) 12601558Srgrimes fsid_t *fsid; 12611558Srgrimes{ 12621558Srgrimes struct exportlist *ep; 12631558Srgrimes 12641558Srgrimes ep = exphead; 12651558Srgrimes while (ep) { 12661558Srgrimes if (ep->ex_fs.val[0] == fsid->val[0] && 12671558Srgrimes ep->ex_fs.val[1] == fsid->val[1]) 12681558Srgrimes return (ep); 12691558Srgrimes ep = ep->ex_next; 12701558Srgrimes } 12711558Srgrimes return (ep); 12721558Srgrimes} 12731558Srgrimes 12741558Srgrimes/* 12751558Srgrimes * Add a directory path to the list. 12761558Srgrimes */ 12771558Srgrimeschar * 12781558Srgrimesadd_expdir(dpp, cp, len) 12791558Srgrimes struct dirlist **dpp; 12801558Srgrimes char *cp; 12811558Srgrimes int len; 12821558Srgrimes{ 12831558Srgrimes struct dirlist *dp; 12841558Srgrimes 12851558Srgrimes dp = (struct dirlist *)malloc(sizeof (struct dirlist) + len); 128637663Scharnier if (dp == (struct dirlist *)NULL) 128737663Scharnier out_of_mem(); 12881558Srgrimes dp->dp_left = *dpp; 12891558Srgrimes dp->dp_right = (struct dirlist *)NULL; 12901558Srgrimes dp->dp_flag = 0; 12911558Srgrimes dp->dp_hosts = (struct hostlist *)NULL; 12921558Srgrimes strcpy(dp->dp_dirp, cp); 12931558Srgrimes *dpp = dp; 12941558Srgrimes return (dp->dp_dirp); 12951558Srgrimes} 12961558Srgrimes 12971558Srgrimes/* 12981558Srgrimes * Hang the dir list element off the dirpath binary tree as required 12991558Srgrimes * and update the entry for host. 13001558Srgrimes */ 13011558Srgrimesvoid 13029336Sdfrhang_dirp(dp, grp, ep, flags) 13031558Srgrimes struct dirlist *dp; 13041558Srgrimes struct grouplist *grp; 13051558Srgrimes struct exportlist *ep; 13069336Sdfr int flags; 13071558Srgrimes{ 13081558Srgrimes struct hostlist *hp; 13091558Srgrimes struct dirlist *dp2; 13101558Srgrimes 13119336Sdfr if (flags & OP_ALLDIRS) { 13121558Srgrimes if (ep->ex_defdir) 13131558Srgrimes free((caddr_t)dp); 13141558Srgrimes else 13151558Srgrimes ep->ex_defdir = dp; 13169336Sdfr if (grp == (struct grouplist *)NULL) { 13171558Srgrimes ep->ex_defdir->dp_flag |= DP_DEFSET; 13189336Sdfr } else while (grp) { 13191558Srgrimes hp = get_ht(); 13201558Srgrimes hp->ht_grp = grp; 13211558Srgrimes hp->ht_next = ep->ex_defdir->dp_hosts; 13221558Srgrimes ep->ex_defdir->dp_hosts = hp; 13231558Srgrimes grp = grp->gr_next; 13241558Srgrimes } 13251558Srgrimes } else { 13261558Srgrimes 13271558Srgrimes /* 132837663Scharnier * Loop through the directories adding them to the tree. 13291558Srgrimes */ 13301558Srgrimes while (dp) { 13311558Srgrimes dp2 = dp->dp_left; 13329336Sdfr add_dlist(&ep->ex_dirl, dp, grp, flags); 13331558Srgrimes dp = dp2; 13341558Srgrimes } 13351558Srgrimes } 13361558Srgrimes} 13371558Srgrimes 13381558Srgrimes/* 13391558Srgrimes * Traverse the binary tree either updating a node that is already there 13401558Srgrimes * for the new directory or adding the new node. 13411558Srgrimes */ 13421558Srgrimesvoid 13439336Sdfradd_dlist(dpp, newdp, grp, flags) 13441558Srgrimes struct dirlist **dpp; 13451558Srgrimes struct dirlist *newdp; 13461558Srgrimes struct grouplist *grp; 13479336Sdfr int flags; 13481558Srgrimes{ 13491558Srgrimes struct dirlist *dp; 13501558Srgrimes struct hostlist *hp; 13511558Srgrimes int cmp; 13521558Srgrimes 13531558Srgrimes dp = *dpp; 13541558Srgrimes if (dp) { 13551558Srgrimes cmp = strcmp(dp->dp_dirp, newdp->dp_dirp); 13561558Srgrimes if (cmp > 0) { 13579336Sdfr add_dlist(&dp->dp_left, newdp, grp, flags); 13581558Srgrimes return; 13591558Srgrimes } else if (cmp < 0) { 13609336Sdfr add_dlist(&dp->dp_right, newdp, grp, flags); 13611558Srgrimes return; 13621558Srgrimes } else 13631558Srgrimes free((caddr_t)newdp); 13641558Srgrimes } else { 13651558Srgrimes dp = newdp; 13661558Srgrimes dp->dp_left = (struct dirlist *)NULL; 13671558Srgrimes *dpp = dp; 13681558Srgrimes } 13691558Srgrimes if (grp) { 13701558Srgrimes 13711558Srgrimes /* 13721558Srgrimes * Hang all of the host(s) off of the directory point. 13731558Srgrimes */ 13741558Srgrimes do { 13751558Srgrimes hp = get_ht(); 13761558Srgrimes hp->ht_grp = grp; 13771558Srgrimes hp->ht_next = dp->dp_hosts; 13781558Srgrimes dp->dp_hosts = hp; 13791558Srgrimes grp = grp->gr_next; 13801558Srgrimes } while (grp); 13819336Sdfr } else { 13821558Srgrimes dp->dp_flag |= DP_DEFSET; 13839336Sdfr } 13841558Srgrimes} 13851558Srgrimes 13861558Srgrimes/* 13871558Srgrimes * Search for a dirpath on the export point. 13881558Srgrimes */ 13891558Srgrimesstruct dirlist * 139074462Salfreddirp_search(dp, dirp) 13911558Srgrimes struct dirlist *dp; 139274462Salfred char *dirp; 13931558Srgrimes{ 13941558Srgrimes int cmp; 13951558Srgrimes 13961558Srgrimes if (dp) { 139774462Salfred cmp = strcmp(dp->dp_dirp, dirp); 13981558Srgrimes if (cmp > 0) 139974462Salfred return (dirp_search(dp->dp_left, dirp)); 14001558Srgrimes else if (cmp < 0) 140174462Salfred return (dirp_search(dp->dp_right, dirp)); 14021558Srgrimes else 14031558Srgrimes return (dp); 14041558Srgrimes } 14051558Srgrimes return (dp); 14061558Srgrimes} 14071558Srgrimes 14081558Srgrimes/* 14091558Srgrimes * Scan for a host match in a directory tree. 14101558Srgrimes */ 14111558Srgrimesint 14129336Sdfrchk_host(dp, saddr, defsetp, hostsetp) 14131558Srgrimes struct dirlist *dp; 141474462Salfred struct sockaddr *saddr; 14151558Srgrimes int *defsetp; 14169336Sdfr int *hostsetp; 14171558Srgrimes{ 14181558Srgrimes struct hostlist *hp; 14191558Srgrimes struct grouplist *grp; 142074462Salfred struct addrinfo *ai; 14211558Srgrimes 14221558Srgrimes if (dp) { 14231558Srgrimes if (dp->dp_flag & DP_DEFSET) 14249336Sdfr *defsetp = dp->dp_flag; 14251558Srgrimes hp = dp->dp_hosts; 14261558Srgrimes while (hp) { 14271558Srgrimes grp = hp->ht_grp; 14281558Srgrimes switch (grp->gr_type) { 14291558Srgrimes case GT_HOST: 143074462Salfred ai = grp->gr_ptr.gt_addrinfo; 143174462Salfred for (; ai; ai = ai->ai_next) { 143275801Siedowse if (!sacmp(ai->ai_addr, saddr, NULL)) { 143374462Salfred *hostsetp = 143474462Salfred (hp->ht_flag | DP_HOSTSET); 143574462Salfred return (1); 143674462Salfred } 14379336Sdfr } 143875801Siedowse break; 14391558Srgrimes case GT_NET: 144075801Siedowse if (!sacmp(saddr, (struct sockaddr *) 144175801Siedowse &grp->gr_ptr.gt_net.nt_net, 144275801Siedowse (struct sockaddr *) 144375801Siedowse &grp->gr_ptr.gt_net.nt_mask)) { 144474462Salfred *hostsetp = (hp->ht_flag | DP_HOSTSET); 144574462Salfred return (1); 144674462Salfred } 144775801Siedowse break; 144875801Siedowse } 14491558Srgrimes hp = hp->ht_next; 14501558Srgrimes } 14511558Srgrimes } 14521558Srgrimes return (0); 14531558Srgrimes} 14541558Srgrimes 14551558Srgrimes/* 14561558Srgrimes * Scan tree for a host that matches the address. 14571558Srgrimes */ 14581558Srgrimesint 14591558Srgrimesscan_tree(dp, saddr) 14601558Srgrimes struct dirlist *dp; 146174462Salfred struct sockaddr *saddr; 14621558Srgrimes{ 14639336Sdfr int defset, hostset; 14641558Srgrimes 14651558Srgrimes if (dp) { 14661558Srgrimes if (scan_tree(dp->dp_left, saddr)) 14671558Srgrimes return (1); 14689336Sdfr if (chk_host(dp, saddr, &defset, &hostset)) 14691558Srgrimes return (1); 14701558Srgrimes if (scan_tree(dp->dp_right, saddr)) 14711558Srgrimes return (1); 14721558Srgrimes } 14731558Srgrimes return (0); 14741558Srgrimes} 14751558Srgrimes 14761558Srgrimes/* 14771558Srgrimes * Traverse the dirlist tree and free it up. 14781558Srgrimes */ 14791558Srgrimesvoid 14801558Srgrimesfree_dir(dp) 14811558Srgrimes struct dirlist *dp; 14821558Srgrimes{ 14831558Srgrimes 14841558Srgrimes if (dp) { 14851558Srgrimes free_dir(dp->dp_left); 14861558Srgrimes free_dir(dp->dp_right); 14871558Srgrimes free_host(dp->dp_hosts); 14881558Srgrimes free((caddr_t)dp); 14891558Srgrimes } 14901558Srgrimes} 14911558Srgrimes 14921558Srgrimes/* 14931558Srgrimes * Parse the option string and update fields. 14941558Srgrimes * Option arguments may either be -<option>=<value> or 14951558Srgrimes * -<option> <value> 14961558Srgrimes */ 14971558Srgrimesint 14981558Srgrimesdo_opt(cpp, endcpp, ep, grp, has_hostp, exflagsp, cr) 14991558Srgrimes char **cpp, **endcpp; 15001558Srgrimes struct exportlist *ep; 15011558Srgrimes struct grouplist *grp; 15021558Srgrimes int *has_hostp; 15031558Srgrimes int *exflagsp; 150472650Sgreen struct xucred *cr; 15051558Srgrimes{ 15061558Srgrimes char *cpoptarg, *cpoptend; 15071558Srgrimes char *cp, *endcp, *cpopt, savedc, savedc2; 15081558Srgrimes int allflag, usedarg; 15091558Srgrimes 151051968Salfred savedc2 = '\0'; 15111558Srgrimes cpopt = *cpp; 15121558Srgrimes cpopt++; 15131558Srgrimes cp = *endcpp; 15141558Srgrimes savedc = *cp; 15151558Srgrimes *cp = '\0'; 15161558Srgrimes while (cpopt && *cpopt) { 15171558Srgrimes allflag = 1; 15181558Srgrimes usedarg = -2; 151937663Scharnier if ((cpoptend = strchr(cpopt, ','))) { 15201558Srgrimes *cpoptend++ = '\0'; 152137663Scharnier if ((cpoptarg = strchr(cpopt, '='))) 15221558Srgrimes *cpoptarg++ = '\0'; 15231558Srgrimes } else { 152437663Scharnier if ((cpoptarg = strchr(cpopt, '='))) 15251558Srgrimes *cpoptarg++ = '\0'; 15261558Srgrimes else { 15271558Srgrimes *cp = savedc; 15281558Srgrimes nextfield(&cp, &endcp); 15291558Srgrimes **endcpp = '\0'; 15301558Srgrimes if (endcp > cp && *cp != '-') { 15311558Srgrimes cpoptarg = cp; 15321558Srgrimes savedc2 = *endcp; 15331558Srgrimes *endcp = '\0'; 15341558Srgrimes usedarg = 0; 15351558Srgrimes } 15361558Srgrimes } 15371558Srgrimes } 15381558Srgrimes if (!strcmp(cpopt, "ro") || !strcmp(cpopt, "o")) { 15391558Srgrimes *exflagsp |= MNT_EXRDONLY; 15401558Srgrimes } else if (cpoptarg && (!strcmp(cpopt, "maproot") || 15411558Srgrimes !(allflag = strcmp(cpopt, "mapall")) || 15421558Srgrimes !strcmp(cpopt, "root") || !strcmp(cpopt, "r"))) { 15431558Srgrimes usedarg++; 15441558Srgrimes parsecred(cpoptarg, cr); 15451558Srgrimes if (allflag == 0) { 15461558Srgrimes *exflagsp |= MNT_EXPORTANON; 15471558Srgrimes opt_flags |= OP_MAPALL; 15481558Srgrimes } else 15491558Srgrimes opt_flags |= OP_MAPROOT; 15501558Srgrimes } else if (cpoptarg && (!strcmp(cpopt, "mask") || 155175801Siedowse !strcmp(cpopt, "m"))) { 15521558Srgrimes if (get_net(cpoptarg, &grp->gr_ptr.gt_net, 1)) { 155337663Scharnier syslog(LOG_ERR, "bad mask: %s", cpoptarg); 15541558Srgrimes return (1); 15551558Srgrimes } 15561558Srgrimes usedarg++; 15571558Srgrimes opt_flags |= OP_MASK; 15581558Srgrimes } else if (cpoptarg && (!strcmp(cpopt, "network") || 15591558Srgrimes !strcmp(cpopt, "n"))) { 156074462Salfred if (strchr(cpoptarg, '/') != NULL) { 156174462Salfred if (debug) 156274462Salfred fprintf(stderr, "setting OP_MASKLEN\n"); 156374462Salfred opt_flags |= OP_MASKLEN; 156474462Salfred } 15651558Srgrimes if (grp->gr_type != GT_NULL) { 156637663Scharnier syslog(LOG_ERR, "network/host conflict"); 15671558Srgrimes return (1); 15681558Srgrimes } else if (get_net(cpoptarg, &grp->gr_ptr.gt_net, 0)) { 156937663Scharnier syslog(LOG_ERR, "bad net: %s", cpoptarg); 15701558Srgrimes return (1); 15711558Srgrimes } 15721558Srgrimes grp->gr_type = GT_NET; 15731558Srgrimes *has_hostp = 1; 15741558Srgrimes usedarg++; 15751558Srgrimes opt_flags |= OP_NET; 15761558Srgrimes } else if (!strcmp(cpopt, "alldirs")) { 15771558Srgrimes opt_flags |= OP_ALLDIRS; 157827447Sdfr } else if (!strcmp(cpopt, "public")) { 157927447Sdfr *exflagsp |= MNT_EXPUBLIC; 158027447Sdfr } else if (!strcmp(cpopt, "webnfs")) { 158127447Sdfr *exflagsp |= (MNT_EXPUBLIC|MNT_EXRDONLY|MNT_EXPORTANON); 158227447Sdfr opt_flags |= OP_MAPALL; 158327447Sdfr } else if (cpoptarg && !strcmp(cpopt, "index")) { 158427447Sdfr ep->ex_indexfile = strdup(cpoptarg); 1585100336Sjoerg } else if (!strcmp(cpopt, "quiet")) { 1586100336Sjoerg opt_flags |= OP_QUIET; 15871558Srgrimes } else { 158837663Scharnier syslog(LOG_ERR, "bad opt %s", cpopt); 15891558Srgrimes return (1); 15901558Srgrimes } 15911558Srgrimes if (usedarg >= 0) { 15921558Srgrimes *endcp = savedc2; 15931558Srgrimes **endcpp = savedc; 15941558Srgrimes if (usedarg > 0) { 15951558Srgrimes *cpp = cp; 15961558Srgrimes *endcpp = endcp; 15971558Srgrimes } 15981558Srgrimes return (0); 15991558Srgrimes } 16001558Srgrimes cpopt = cpoptend; 16011558Srgrimes } 16021558Srgrimes **endcpp = savedc; 16031558Srgrimes return (0); 16041558Srgrimes} 16051558Srgrimes 16061558Srgrimes/* 16071558Srgrimes * Translate a character string to the corresponding list of network 16081558Srgrimes * addresses for a hostname. 16091558Srgrimes */ 16101558Srgrimesint 16117401Swpaulget_host(cp, grp, tgrp) 16121558Srgrimes char *cp; 16131558Srgrimes struct grouplist *grp; 16147401Swpaul struct grouplist *tgrp; 16151558Srgrimes{ 16167401Swpaul struct grouplist *checkgrp; 161775635Siedowse struct addrinfo *ai, *tai, hints; 161874462Salfred int ecode; 161974462Salfred char host[NI_MAXHOST]; 16201558Srgrimes 162174462Salfred if (grp->gr_type != GT_NULL) { 162274462Salfred syslog(LOG_ERR, "Bad netgroup type for ip host %s", cp); 16231558Srgrimes return (1); 16241558Srgrimes } 162574462Salfred memset(&hints, 0, sizeof hints); 162674462Salfred hints.ai_flags = AI_CANONNAME; 162774462Salfred hints.ai_protocol = IPPROTO_UDP; 162874462Salfred ecode = getaddrinfo(cp, NULL, &hints, &ai); 162974462Salfred if (ecode != 0) { 163075635Siedowse syslog(LOG_ERR,"can't get address info for host %s", cp); 163174462Salfred return 1; 163274462Salfred } 163374462Salfred grp->gr_ptr.gt_addrinfo = ai; 163474462Salfred while (ai != NULL) { 163574462Salfred if (ai->ai_canonname == NULL) { 163674462Salfred if (getnameinfo(ai->ai_addr, ai->ai_addrlen, host, 163774462Salfred sizeof host, NULL, 0, ninumeric) != 0) 163874462Salfred strlcpy(host, "?", sizeof(host)); 163974462Salfred ai->ai_canonname = strdup(host); 164074462Salfred ai->ai_flags |= AI_CANONNAME; 164175641Siedowse } 164274462Salfred if (debug) 164375635Siedowse fprintf(stderr, "got host %s\n", ai->ai_canonname); 164475635Siedowse /* 164575635Siedowse * Sanity check: make sure we don't already have an entry 164675635Siedowse * for this host in the grouplist. 164775635Siedowse */ 164875635Siedowse for (checkgrp = tgrp; checkgrp != NULL; 164975635Siedowse checkgrp = checkgrp->gr_next) { 165075635Siedowse if (checkgrp->gr_type != GT_HOST) 165175635Siedowse continue; 165275635Siedowse for (tai = checkgrp->gr_ptr.gt_addrinfo; tai != NULL; 165375635Siedowse tai = tai->ai_next) { 165475801Siedowse if (sacmp(tai->ai_addr, ai->ai_addr, NULL) != 0) 165575635Siedowse continue; 165675635Siedowse if (debug) 165775635Siedowse fprintf(stderr, 165875635Siedowse "ignoring duplicate host %s\n", 165975635Siedowse ai->ai_canonname); 166075635Siedowse grp->gr_type = GT_IGNORE; 166175635Siedowse return (0); 166275635Siedowse } 166375635Siedowse } 166474462Salfred ai = ai->ai_next; 16651558Srgrimes } 166675635Siedowse grp->gr_type = GT_HOST; 16671558Srgrimes return (0); 16681558Srgrimes} 16691558Srgrimes 16701558Srgrimes/* 16711558Srgrimes * Free up an exports list component 16721558Srgrimes */ 16731558Srgrimesvoid 16741558Srgrimesfree_exp(ep) 16751558Srgrimes struct exportlist *ep; 16761558Srgrimes{ 16771558Srgrimes 16781558Srgrimes if (ep->ex_defdir) { 16791558Srgrimes free_host(ep->ex_defdir->dp_hosts); 16801558Srgrimes free((caddr_t)ep->ex_defdir); 16811558Srgrimes } 16821558Srgrimes if (ep->ex_fsdir) 16831558Srgrimes free(ep->ex_fsdir); 168427447Sdfr if (ep->ex_indexfile) 168527447Sdfr free(ep->ex_indexfile); 16861558Srgrimes free_dir(ep->ex_dirl); 16871558Srgrimes free((caddr_t)ep); 16881558Srgrimes} 16891558Srgrimes 16901558Srgrimes/* 16911558Srgrimes * Free hosts. 16921558Srgrimes */ 16931558Srgrimesvoid 16941558Srgrimesfree_host(hp) 16951558Srgrimes struct hostlist *hp; 16961558Srgrimes{ 16971558Srgrimes struct hostlist *hp2; 16981558Srgrimes 16991558Srgrimes while (hp) { 17001558Srgrimes hp2 = hp; 17011558Srgrimes hp = hp->ht_next; 17021558Srgrimes free((caddr_t)hp2); 17031558Srgrimes } 17041558Srgrimes} 17051558Srgrimes 17061558Srgrimesstruct hostlist * 17071558Srgrimesget_ht() 17081558Srgrimes{ 17091558Srgrimes struct hostlist *hp; 17101558Srgrimes 17111558Srgrimes hp = (struct hostlist *)malloc(sizeof (struct hostlist)); 17121558Srgrimes if (hp == (struct hostlist *)NULL) 17131558Srgrimes out_of_mem(); 17141558Srgrimes hp->ht_next = (struct hostlist *)NULL; 17159336Sdfr hp->ht_flag = 0; 17161558Srgrimes return (hp); 17171558Srgrimes} 17181558Srgrimes 17191558Srgrimes/* 17201558Srgrimes * Out of memory, fatal 17211558Srgrimes */ 17221558Srgrimesvoid 17231558Srgrimesout_of_mem() 17241558Srgrimes{ 17251558Srgrimes 172637663Scharnier syslog(LOG_ERR, "out of memory"); 17271558Srgrimes exit(2); 17281558Srgrimes} 17291558Srgrimes 17301558Srgrimes/* 17311558Srgrimes * Do the mount syscall with the update flag to push the export info into 17321558Srgrimes * the kernel. 17331558Srgrimes */ 17341558Srgrimesint 17351558Srgrimesdo_mount(ep, grp, exflags, anoncrp, dirp, dirplen, fsb) 17361558Srgrimes struct exportlist *ep; 17371558Srgrimes struct grouplist *grp; 17381558Srgrimes int exflags; 173972650Sgreen struct xucred *anoncrp; 17401558Srgrimes char *dirp; 17411558Srgrimes int dirplen; 17421558Srgrimes struct statfs *fsb; 17431558Srgrimes{ 174475841Siedowse struct statfs fsb1; 174574462Salfred struct addrinfo *ai; 174675801Siedowse struct export_args *eap; 174774462Salfred char *cp = NULL; 17481558Srgrimes int done; 17491558Srgrimes char savedc = '\0'; 17501558Srgrimes union { 17511558Srgrimes struct ufs_args ua; 17521558Srgrimes struct iso_args ia; 17539336Sdfr struct msdosfs_args da; 175454093Ssemenu struct ntfs_args na; 17551558Srgrimes } args; 17561558Srgrimes 175775801Siedowse bzero(&args, sizeof args); 175875801Siedowse /* XXX, we assume that all xx_args look like ufs_args. */ 17591558Srgrimes args.ua.fspec = 0; 176075801Siedowse eap = &args.ua.export; 176175801Siedowse 176275801Siedowse eap->ex_flags = exflags; 176375801Siedowse eap->ex_anon = *anoncrp; 176475801Siedowse eap->ex_indexfile = ep->ex_indexfile; 176575641Siedowse if (grp->gr_type == GT_HOST) 176674462Salfred ai = grp->gr_ptr.gt_addrinfo; 176775641Siedowse else 176875641Siedowse ai = NULL; 17691558Srgrimes done = FALSE; 17701558Srgrimes while (!done) { 17711558Srgrimes switch (grp->gr_type) { 17721558Srgrimes case GT_HOST: 177375641Siedowse if (ai->ai_addr->sa_family == AF_INET6 && have_v6 == 0) 177474462Salfred goto skip; 177575801Siedowse eap->ex_addr = ai->ai_addr; 177675801Siedowse eap->ex_addrlen = ai->ai_addrlen; 177775801Siedowse eap->ex_masklen = 0; 17781558Srgrimes break; 17791558Srgrimes case GT_NET: 178075801Siedowse if (grp->gr_ptr.gt_net.nt_net.ss_family == AF_INET6 && 178174462Salfred have_v6 == 0) 178274462Salfred goto skip; 178375801Siedowse eap->ex_addr = 178475801Siedowse (struct sockaddr *)&grp->gr_ptr.gt_net.nt_net; 178575801Siedowse eap->ex_addrlen = args.ua.export.ex_addr->sa_len; 178675801Siedowse eap->ex_mask = 178775801Siedowse (struct sockaddr *)&grp->gr_ptr.gt_net.nt_mask; 178875801Siedowse eap->ex_masklen = args.ua.export.ex_mask->sa_len; 17891558Srgrimes break; 179075641Siedowse case GT_DEFAULT: 179175801Siedowse eap->ex_addr = NULL; 179275801Siedowse eap->ex_addrlen = 0; 179375801Siedowse eap->ex_mask = NULL; 179475801Siedowse eap->ex_masklen = 0; 179575641Siedowse break; 17967401Swpaul case GT_IGNORE: 17977401Swpaul return(0); 17987401Swpaul break; 17991558Srgrimes default: 180037663Scharnier syslog(LOG_ERR, "bad grouptype"); 18011558Srgrimes if (cp) 18021558Srgrimes *cp = savedc; 18031558Srgrimes return (1); 18041558Srgrimes }; 18051558Srgrimes 18061558Srgrimes /* 18071558Srgrimes * XXX: 18081558Srgrimes * Maybe I should just use the fsb->f_mntonname path instead 18091558Srgrimes * of looping back up the dirp to the mount point?? 18101558Srgrimes * Also, needs to know how to export all types of local 181196707Strhodes * exportable filesystems and not just "ufs". 18121558Srgrimes */ 18139336Sdfr while (mount(fsb->f_fstypename, dirp, 181474462Salfred fsb->f_flags | MNT_UPDATE, (caddr_t)&args) < 0) { 18151558Srgrimes if (cp) 18161558Srgrimes *cp-- = savedc; 18171558Srgrimes else 18181558Srgrimes cp = dirp + dirplen - 1; 1819100336Sjoerg if (opt_flags & OP_QUIET) 1820100336Sjoerg return (1); 18211558Srgrimes if (errno == EPERM) { 182275635Siedowse if (debug) 182375635Siedowse warnx("can't change attributes for %s", 182475635Siedowse dirp); 18251558Srgrimes syslog(LOG_ERR, 182637663Scharnier "can't change attributes for %s", dirp); 18271558Srgrimes return (1); 18281558Srgrimes } 18291558Srgrimes if (opt_flags & OP_ALLDIRS) { 1830100336Sjoerg if (errno == EINVAL) 1831100336Sjoerg syslog(LOG_ERR, 1832100336Sjoerg "-alldirs requested but %s is not a filesystem mountpoint", 1833100336Sjoerg dirp); 1834100336Sjoerg else 1835100336Sjoerg syslog(LOG_ERR, 1836100336Sjoerg "could not remount %s: %m", 1837100336Sjoerg dirp); 18381558Srgrimes return (1); 18391558Srgrimes } 18401558Srgrimes /* back up over the last component */ 18411558Srgrimes while (*cp == '/' && cp > dirp) 18421558Srgrimes cp--; 18431558Srgrimes while (*(cp - 1) != '/' && cp > dirp) 18441558Srgrimes cp--; 18451558Srgrimes if (cp == dirp) { 18461558Srgrimes if (debug) 184737663Scharnier warnx("mnt unsucc"); 184837663Scharnier syslog(LOG_ERR, "can't export %s", dirp); 18491558Srgrimes return (1); 18501558Srgrimes } 18511558Srgrimes savedc = *cp; 18521558Srgrimes *cp = '\0'; 185375841Siedowse /* Check that we're still on the same filesystem. */ 185475841Siedowse if (statfs(dirp, &fsb1) != 0 || bcmp(&fsb1.f_fsid, 185575841Siedowse &fsb->f_fsid, sizeof(fsb1.f_fsid)) != 0) { 185675841Siedowse *cp = savedc; 185775841Siedowse syslog(LOG_ERR, "can't export %s", dirp); 185875841Siedowse return (1); 185975841Siedowse } 18601558Srgrimes } 186174462Salfredskip: 186275641Siedowse if (ai != NULL) 186374462Salfred ai = ai->ai_next; 186475641Siedowse if (ai == NULL) 18651558Srgrimes done = TRUE; 18661558Srgrimes } 18671558Srgrimes if (cp) 18681558Srgrimes *cp = savedc; 18691558Srgrimes return (0); 18701558Srgrimes} 18711558Srgrimes 18721558Srgrimes/* 18731558Srgrimes * Translate a net address. 187475801Siedowse * 187575801Siedowse * If `maskflg' is nonzero, then `cp' is a netmask, not a network address. 18761558Srgrimes */ 18771558Srgrimesint 18781558Srgrimesget_net(cp, net, maskflg) 18791558Srgrimes char *cp; 18801558Srgrimes struct netmsk *net; 18811558Srgrimes int maskflg; 18821558Srgrimes{ 188375861Siedowse struct netent *np = NULL; 188474462Salfred char *name, *p, *prefp; 188575801Siedowse struct sockaddr_in sin; 188675861Siedowse struct sockaddr *sa = NULL; 188774462Salfred struct addrinfo hints, *ai = NULL; 188874462Salfred char netname[NI_MAXHOST]; 188974462Salfred long preflen; 18901558Srgrimes 189175635Siedowse p = prefp = NULL; 189274462Salfred if ((opt_flags & OP_MASKLEN) && !maskflg) { 189374462Salfred p = strchr(cp, '/'); 189474462Salfred *p = '\0'; 189574462Salfred prefp = p + 1; 189674462Salfred } 189774462Salfred 189875861Siedowse /* 189975861Siedowse * Check for a numeric address first. We wish to avoid 190075861Siedowse * possible DNS lookups in getnetbyname(). 190175861Siedowse */ 190275861Siedowse if (isxdigit(*cp) || *cp == ':') { 190374462Salfred memset(&hints, 0, sizeof hints); 190475801Siedowse /* Ensure the mask and the network have the same family. */ 190575801Siedowse if (maskflg && (opt_flags & OP_NET)) 190675801Siedowse hints.ai_family = net->nt_net.ss_family; 190775801Siedowse else if (!maskflg && (opt_flags & OP_HAVEMASK)) 190875801Siedowse hints.ai_family = net->nt_mask.ss_family; 190975801Siedowse else 191075801Siedowse hints.ai_family = AF_UNSPEC; 191174462Salfred hints.ai_flags = AI_NUMERICHOST; 191275861Siedowse if (getaddrinfo(cp, NULL, &hints, &ai) == 0) 191375861Siedowse sa = ai->ai_addr; 191475861Siedowse if (sa != NULL && ai->ai_family == AF_INET) { 191574462Salfred /* 191675801Siedowse * The address in `cp' is really a network address, so 191775801Siedowse * use inet_network() to re-interpret this correctly. 191875801Siedowse * e.g. "127.1" means 127.1.0.0, not 127.0.0.1. 191974462Salfred */ 192075801Siedowse bzero(&sin, sizeof sin); 192174462Salfred sin.sin_family = AF_INET; 192274462Salfred sin.sin_len = sizeof sin; 192375801Siedowse sin.sin_addr = inet_makeaddr(inet_network(cp), 0); 192474462Salfred if (debug) 192575801Siedowse fprintf(stderr, "get_net: v4 addr %s\n", 192675801Siedowse inet_ntoa(sin.sin_addr)); 192774462Salfred sa = (struct sockaddr *)&sin; 192875861Siedowse } 192975861Siedowse } 193075861Siedowse if (sa == NULL && (np = getnetbyname(cp)) != NULL) { 193175861Siedowse bzero(&sin, sizeof sin); 193275861Siedowse sin.sin_family = AF_INET; 193375861Siedowse sin.sin_len = sizeof sin; 193475861Siedowse sin.sin_addr = inet_makeaddr(np->n_net, 0); 193575861Siedowse sa = (struct sockaddr *)&sin; 193675861Siedowse } 193775861Siedowse if (sa == NULL) 193874462Salfred goto fail; 193925318Spst 194075801Siedowse if (maskflg) { 194175801Siedowse /* The specified sockaddr is a mask. */ 194275801Siedowse if (checkmask(sa) != 0) 194375801Siedowse goto fail; 194475801Siedowse bcopy(sa, &net->nt_mask, sa->sa_len); 194575801Siedowse opt_flags |= OP_HAVEMASK; 194675801Siedowse } else { 194775801Siedowse /* The specified sockaddr is a network address. */ 194875801Siedowse bcopy(sa, &net->nt_net, sa->sa_len); 194974462Salfred 195075801Siedowse /* Get a network name for the export list. */ 195175801Siedowse if (np) { 195275801Siedowse name = np->n_name; 195375801Siedowse } else if (getnameinfo(sa, sa->sa_len, netname, sizeof netname, 195475801Siedowse NULL, 0, ninumeric) == 0) { 195575801Siedowse name = netname; 195675801Siedowse } else { 195775801Siedowse goto fail; 195875801Siedowse } 195975801Siedowse if ((net->nt_name = strdup(name)) == NULL) 196075801Siedowse out_of_mem(); 196175801Siedowse 196275801Siedowse /* 196375801Siedowse * Extract a mask from either a "/<masklen>" suffix, or 196475801Siedowse * from the class of an IPv4 address. 196575801Siedowse */ 196674462Salfred if (opt_flags & OP_MASKLEN) { 196774462Salfred preflen = strtol(prefp, NULL, 10); 196875801Siedowse if (preflen < 0L || preflen == LONG_MAX) 196974462Salfred goto fail; 197075801Siedowse bcopy(sa, &net->nt_mask, sa->sa_len); 197175801Siedowse if (makemask(&net->nt_mask, (int)preflen) != 0) 197275801Siedowse goto fail; 197375801Siedowse opt_flags |= OP_HAVEMASK; 197474462Salfred *p = '/'; 197575801Siedowse } else if (sa->sa_family == AF_INET && 197675801Siedowse (opt_flags & OP_MASK) == 0) { 197775801Siedowse in_addr_t addr; 197874462Salfred 197975801Siedowse addr = ((struct sockaddr_in *)sa)->sin_addr.s_addr; 198075801Siedowse if (IN_CLASSA(addr)) 198175801Siedowse preflen = 8; 198275801Siedowse else if (IN_CLASSB(addr)) 198375801Siedowse preflen = 16; 198475801Siedowse else if (IN_CLASSC(addr)) 198575801Siedowse preflen = 24; 198675801Siedowse else if (IN_CLASSD(addr)) 198775801Siedowse preflen = 28; 198875801Siedowse else 198975801Siedowse preflen = 32; /* XXX */ 199075801Siedowse 199175801Siedowse bcopy(sa, &net->nt_mask, sa->sa_len); 199275801Siedowse makemask(&net->nt_mask, (int)preflen); 199375801Siedowse opt_flags |= OP_HAVEMASK; 199474462Salfred } 199574462Salfred } 199674462Salfred 199774462Salfred if (ai) 199874462Salfred freeaddrinfo(ai); 199974462Salfred return 0; 200074462Salfred 200174462Salfredfail: 200274462Salfred if (ai) 200374462Salfred freeaddrinfo(ai); 200474462Salfred return 1; 20051558Srgrimes} 20061558Srgrimes 20071558Srgrimes/* 20081558Srgrimes * Parse out the next white space separated field 20091558Srgrimes */ 20101558Srgrimesvoid 20111558Srgrimesnextfield(cp, endcp) 20121558Srgrimes char **cp; 20131558Srgrimes char **endcp; 20141558Srgrimes{ 20151558Srgrimes char *p; 20161558Srgrimes 20171558Srgrimes p = *cp; 20181558Srgrimes while (*p == ' ' || *p == '\t') 20191558Srgrimes p++; 20201558Srgrimes if (*p == '\n' || *p == '\0') 20211558Srgrimes *cp = *endcp = p; 20221558Srgrimes else { 20231558Srgrimes *cp = p++; 20241558Srgrimes while (*p != ' ' && *p != '\t' && *p != '\n' && *p != '\0') 20251558Srgrimes p++; 20261558Srgrimes *endcp = p; 20271558Srgrimes } 20281558Srgrimes} 20291558Srgrimes 20301558Srgrimes/* 20311558Srgrimes * Get an exports file line. Skip over blank lines and handle line 20321558Srgrimes * continuations. 20331558Srgrimes */ 20341558Srgrimesint 20351558Srgrimesget_line() 20361558Srgrimes{ 20371558Srgrimes char *p, *cp; 203896622Siedowse size_t len; 20391558Srgrimes int totlen, cont_line; 20401558Srgrimes 20411558Srgrimes /* 20421558Srgrimes * Loop around ignoring blank lines and getting all continuation lines. 20431558Srgrimes */ 20441558Srgrimes p = line; 20451558Srgrimes totlen = 0; 20461558Srgrimes do { 204796622Siedowse if ((p = fgetln(exp_file, &len)) == NULL) 20481558Srgrimes return (0); 20491558Srgrimes cp = p + len - 1; 20501558Srgrimes cont_line = 0; 20511558Srgrimes while (cp >= p && 20521558Srgrimes (*cp == ' ' || *cp == '\t' || *cp == '\n' || *cp == '\\')) { 20531558Srgrimes if (*cp == '\\') 20541558Srgrimes cont_line = 1; 20551558Srgrimes cp--; 20561558Srgrimes len--; 20571558Srgrimes } 205879117Sdd if (cont_line) { 205979117Sdd *++cp = ' '; 206079117Sdd len++; 206179117Sdd } 206296622Siedowse if (linesize < len + totlen + 1) { 206396622Siedowse linesize = len + totlen + 1; 206496622Siedowse line = realloc(line, linesize); 206596622Siedowse if (line == NULL) 206696622Siedowse out_of_mem(); 20671558Srgrimes } 206896622Siedowse memcpy(line + totlen, p, len); 206996622Siedowse totlen += len; 207096622Siedowse line[totlen] = '\0'; 20711558Srgrimes } while (totlen == 0 || cont_line); 20721558Srgrimes return (1); 20731558Srgrimes} 20741558Srgrimes 20751558Srgrimes/* 20761558Srgrimes * Parse a description of a credential. 20771558Srgrimes */ 20781558Srgrimesvoid 20791558Srgrimesparsecred(namelist, cr) 20801558Srgrimes char *namelist; 208172650Sgreen struct xucred *cr; 20821558Srgrimes{ 20831558Srgrimes char *name; 20841558Srgrimes int cnt; 20851558Srgrimes char *names; 20861558Srgrimes struct passwd *pw; 20871558Srgrimes struct group *gr; 20881558Srgrimes int ngroups, groups[NGROUPS + 1]; 20891558Srgrimes 209091354Sdd cr->cr_version = XUCRED_VERSION; 20911558Srgrimes /* 209237663Scharnier * Set up the unprivileged user. 20931558Srgrimes */ 20941558Srgrimes cr->cr_uid = -2; 20951558Srgrimes cr->cr_groups[0] = -2; 20961558Srgrimes cr->cr_ngroups = 1; 20971558Srgrimes /* 20981558Srgrimes * Get the user's password table entry. 20991558Srgrimes */ 21001558Srgrimes names = strsep(&namelist, " \t\n"); 21011558Srgrimes name = strsep(&names, ":"); 21021558Srgrimes if (isdigit(*name) || *name == '-') 21031558Srgrimes pw = getpwuid(atoi(name)); 21041558Srgrimes else 21051558Srgrimes pw = getpwnam(name); 21061558Srgrimes /* 21071558Srgrimes * Credentials specified as those of a user. 21081558Srgrimes */ 21091558Srgrimes if (names == NULL) { 21101558Srgrimes if (pw == NULL) { 211137663Scharnier syslog(LOG_ERR, "unknown user: %s", name); 21121558Srgrimes return; 21131558Srgrimes } 21141558Srgrimes cr->cr_uid = pw->pw_uid; 21151558Srgrimes ngroups = NGROUPS + 1; 21161558Srgrimes if (getgrouplist(pw->pw_name, pw->pw_gid, groups, &ngroups)) 211737663Scharnier syslog(LOG_ERR, "too many groups"); 21181558Srgrimes /* 21191558Srgrimes * Convert from int's to gid_t's and compress out duplicate 21201558Srgrimes */ 21211558Srgrimes cr->cr_ngroups = ngroups - 1; 21221558Srgrimes cr->cr_groups[0] = groups[0]; 21231558Srgrimes for (cnt = 2; cnt < ngroups; cnt++) 21241558Srgrimes cr->cr_groups[cnt - 1] = groups[cnt]; 21251558Srgrimes return; 21261558Srgrimes } 21271558Srgrimes /* 21281558Srgrimes * Explicit credential specified as a colon separated list: 21291558Srgrimes * uid:gid:gid:... 21301558Srgrimes */ 21311558Srgrimes if (pw != NULL) 21321558Srgrimes cr->cr_uid = pw->pw_uid; 21331558Srgrimes else if (isdigit(*name) || *name == '-') 21341558Srgrimes cr->cr_uid = atoi(name); 21351558Srgrimes else { 213637663Scharnier syslog(LOG_ERR, "unknown user: %s", name); 21371558Srgrimes return; 21381558Srgrimes } 21391558Srgrimes cr->cr_ngroups = 0; 21401558Srgrimes while (names != NULL && *names != '\0' && cr->cr_ngroups < NGROUPS) { 21411558Srgrimes name = strsep(&names, ":"); 21421558Srgrimes if (isdigit(*name) || *name == '-') { 21431558Srgrimes cr->cr_groups[cr->cr_ngroups++] = atoi(name); 21441558Srgrimes } else { 21451558Srgrimes if ((gr = getgrnam(name)) == NULL) { 214637663Scharnier syslog(LOG_ERR, "unknown group: %s", name); 21471558Srgrimes continue; 21481558Srgrimes } 21491558Srgrimes cr->cr_groups[cr->cr_ngroups++] = gr->gr_gid; 21501558Srgrimes } 21511558Srgrimes } 21521558Srgrimes if (names != NULL && *names != '\0' && cr->cr_ngroups == NGROUPS) 215337663Scharnier syslog(LOG_ERR, "too many groups"); 21541558Srgrimes} 21551558Srgrimes 21561558Srgrimes#define STRSIZ (RPCMNT_NAMELEN+RPCMNT_PATHLEN+50) 21571558Srgrimes/* 21581558Srgrimes * Routines that maintain the remote mounttab 21591558Srgrimes */ 21601558Srgrimesvoid 21611558Srgrimesget_mountlist() 21621558Srgrimes{ 21631558Srgrimes struct mountlist *mlp, **mlpp; 216423681Speter char *host, *dirp, *cp; 21651558Srgrimes char str[STRSIZ]; 21661558Srgrimes FILE *mlfile; 21671558Srgrimes 21681558Srgrimes if ((mlfile = fopen(_PATH_RMOUNTLIST, "r")) == NULL) { 216953117Sbillf if (errno == ENOENT) 217053117Sbillf return; 217153117Sbillf else { 217253117Sbillf syslog(LOG_ERR, "can't open %s", _PATH_RMOUNTLIST); 217353117Sbillf return; 217453117Sbillf } 21751558Srgrimes } 21761558Srgrimes mlpp = &mlhead; 21771558Srgrimes while (fgets(str, STRSIZ, mlfile) != NULL) { 217823681Speter cp = str; 217923681Speter host = strsep(&cp, " \t\n"); 218023681Speter dirp = strsep(&cp, " \t\n"); 218123681Speter if (host == NULL || dirp == NULL) 21821558Srgrimes continue; 21831558Srgrimes mlp = (struct mountlist *)malloc(sizeof (*mlp)); 218437663Scharnier if (mlp == (struct mountlist *)NULL) 218537663Scharnier out_of_mem(); 218623681Speter strncpy(mlp->ml_host, host, RPCMNT_NAMELEN); 218723681Speter mlp->ml_host[RPCMNT_NAMELEN] = '\0'; 218823681Speter strncpy(mlp->ml_dirp, dirp, RPCMNT_PATHLEN); 218923681Speter mlp->ml_dirp[RPCMNT_PATHLEN] = '\0'; 21901558Srgrimes mlp->ml_next = (struct mountlist *)NULL; 21911558Srgrimes *mlpp = mlp; 21921558Srgrimes mlpp = &mlp->ml_next; 21931558Srgrimes } 21941558Srgrimes fclose(mlfile); 21951558Srgrimes} 21961558Srgrimes 219775635Siedowsevoid 219875635Siedowsedel_mlist(char *hostp, char *dirp) 21991558Srgrimes{ 22001558Srgrimes struct mountlist *mlp, **mlpp; 22011558Srgrimes struct mountlist *mlp2; 22021558Srgrimes FILE *mlfile; 22031558Srgrimes int fnd = 0; 22041558Srgrimes 22051558Srgrimes mlpp = &mlhead; 22061558Srgrimes mlp = mlhead; 22071558Srgrimes while (mlp) { 22081558Srgrimes if (!strcmp(mlp->ml_host, hostp) && 22091558Srgrimes (!dirp || !strcmp(mlp->ml_dirp, dirp))) { 22101558Srgrimes fnd = 1; 22111558Srgrimes mlp2 = mlp; 22121558Srgrimes *mlpp = mlp = mlp->ml_next; 22131558Srgrimes free((caddr_t)mlp2); 22141558Srgrimes } else { 22151558Srgrimes mlpp = &mlp->ml_next; 22161558Srgrimes mlp = mlp->ml_next; 22171558Srgrimes } 22181558Srgrimes } 22191558Srgrimes if (fnd) { 22201558Srgrimes if ((mlfile = fopen(_PATH_RMOUNTLIST, "w")) == NULL) { 222137663Scharnier syslog(LOG_ERR,"can't update %s", _PATH_RMOUNTLIST); 22221558Srgrimes return; 22231558Srgrimes } 22241558Srgrimes mlp = mlhead; 22251558Srgrimes while (mlp) { 22261558Srgrimes fprintf(mlfile, "%s %s\n", mlp->ml_host, mlp->ml_dirp); 22271558Srgrimes mlp = mlp->ml_next; 22281558Srgrimes } 22291558Srgrimes fclose(mlfile); 22301558Srgrimes } 22311558Srgrimes} 22321558Srgrimes 22331558Srgrimesvoid 22341558Srgrimesadd_mlist(hostp, dirp) 22351558Srgrimes char *hostp, *dirp; 22361558Srgrimes{ 22371558Srgrimes struct mountlist *mlp, **mlpp; 22381558Srgrimes FILE *mlfile; 22391558Srgrimes 22401558Srgrimes mlpp = &mlhead; 22411558Srgrimes mlp = mlhead; 22421558Srgrimes while (mlp) { 22431558Srgrimes if (!strcmp(mlp->ml_host, hostp) && !strcmp(mlp->ml_dirp, dirp)) 22441558Srgrimes return; 22451558Srgrimes mlpp = &mlp->ml_next; 22461558Srgrimes mlp = mlp->ml_next; 22471558Srgrimes } 22481558Srgrimes mlp = (struct mountlist *)malloc(sizeof (*mlp)); 224937663Scharnier if (mlp == (struct mountlist *)NULL) 225037663Scharnier out_of_mem(); 22511558Srgrimes strncpy(mlp->ml_host, hostp, RPCMNT_NAMELEN); 22521558Srgrimes mlp->ml_host[RPCMNT_NAMELEN] = '\0'; 22531558Srgrimes strncpy(mlp->ml_dirp, dirp, RPCMNT_PATHLEN); 22541558Srgrimes mlp->ml_dirp[RPCMNT_PATHLEN] = '\0'; 22551558Srgrimes mlp->ml_next = (struct mountlist *)NULL; 22561558Srgrimes *mlpp = mlp; 22571558Srgrimes if ((mlfile = fopen(_PATH_RMOUNTLIST, "a")) == NULL) { 225837663Scharnier syslog(LOG_ERR, "can't update %s", _PATH_RMOUNTLIST); 22591558Srgrimes return; 22601558Srgrimes } 22611558Srgrimes fprintf(mlfile, "%s %s\n", mlp->ml_host, mlp->ml_dirp); 22621558Srgrimes fclose(mlfile); 22631558Srgrimes} 22641558Srgrimes 22651558Srgrimes/* 22661558Srgrimes * Free up a group list. 22671558Srgrimes */ 22681558Srgrimesvoid 22691558Srgrimesfree_grp(grp) 22701558Srgrimes struct grouplist *grp; 22711558Srgrimes{ 22721558Srgrimes if (grp->gr_type == GT_HOST) { 227374462Salfred if (grp->gr_ptr.gt_addrinfo != NULL) 227474462Salfred freeaddrinfo(grp->gr_ptr.gt_addrinfo); 22751558Srgrimes } else if (grp->gr_type == GT_NET) { 22761558Srgrimes if (grp->gr_ptr.gt_net.nt_name) 22771558Srgrimes free(grp->gr_ptr.gt_net.nt_name); 22781558Srgrimes } 22791558Srgrimes free((caddr_t)grp); 22801558Srgrimes} 22811558Srgrimes 22821558Srgrimes#ifdef DEBUG 22831558Srgrimesvoid 22841558SrgrimesSYSLOG(int pri, const char *fmt, ...) 22851558Srgrimes{ 22861558Srgrimes va_list ap; 22871558Srgrimes 22881558Srgrimes va_start(ap, fmt); 22891558Srgrimes vfprintf(stderr, fmt, ap); 22901558Srgrimes va_end(ap); 22911558Srgrimes} 22921558Srgrimes#endif /* DEBUG */ 22931558Srgrimes 22941558Srgrimes/* 22951558Srgrimes * Check options for consistency. 22961558Srgrimes */ 22971558Srgrimesint 22981558Srgrimescheck_options(dp) 22991558Srgrimes struct dirlist *dp; 23001558Srgrimes{ 23011558Srgrimes 23021558Srgrimes if (dp == (struct dirlist *)NULL) 23031558Srgrimes return (1); 230483653Speter if ((opt_flags & (OP_MAPROOT | OP_MAPALL)) == (OP_MAPROOT | OP_MAPALL)) { 230583653Speter syslog(LOG_ERR, "-mapall and -maproot mutually exclusive"); 23061558Srgrimes return (1); 23071558Srgrimes } 23081558Srgrimes if ((opt_flags & OP_MASK) && (opt_flags & OP_NET) == 0) { 230975801Siedowse syslog(LOG_ERR, "-mask requires -network"); 231075801Siedowse return (1); 23111558Srgrimes } 231275801Siedowse if ((opt_flags & OP_NET) && (opt_flags & OP_HAVEMASK) == 0) { 231375801Siedowse syslog(LOG_ERR, "-network requires mask specification"); 231475801Siedowse return (1); 231575801Siedowse } 231675801Siedowse if ((opt_flags & OP_MASK) && (opt_flags & OP_MASKLEN)) { 231775801Siedowse syslog(LOG_ERR, "-mask and /masklen are mutually exclusive"); 231875801Siedowse return (1); 231975801Siedowse } 23201558Srgrimes if ((opt_flags & OP_ALLDIRS) && dp->dp_left) { 232145927Salex syslog(LOG_ERR, "-alldirs has multiple directories"); 23221558Srgrimes return (1); 23231558Srgrimes } 23241558Srgrimes return (0); 23251558Srgrimes} 23261558Srgrimes 23271558Srgrimes/* 23281558Srgrimes * Check an absolute directory path for any symbolic links. Return true 23291558Srgrimes */ 23301558Srgrimesint 23311558Srgrimescheck_dirpath(dirp) 23321558Srgrimes char *dirp; 23331558Srgrimes{ 23341558Srgrimes char *cp; 23351558Srgrimes int ret = 1; 23361558Srgrimes struct stat sb; 23371558Srgrimes 23381558Srgrimes cp = dirp + 1; 23391558Srgrimes while (*cp && ret) { 23401558Srgrimes if (*cp == '/') { 23411558Srgrimes *cp = '\0'; 23429336Sdfr if (lstat(dirp, &sb) < 0 || !S_ISDIR(sb.st_mode)) 23431558Srgrimes ret = 0; 23441558Srgrimes *cp = '/'; 23451558Srgrimes } 23461558Srgrimes cp++; 23471558Srgrimes } 23489336Sdfr if (lstat(dirp, &sb) < 0 || !S_ISDIR(sb.st_mode)) 23491558Srgrimes ret = 0; 23501558Srgrimes return (ret); 23511558Srgrimes} 23529336Sdfr 235375801Siedowse/* 235475801Siedowse * Make a netmask according to the specified prefix length. The ss_family 235575801Siedowse * and other non-address fields must be initialised before calling this. 235675801Siedowse */ 235775801Siedowseint 235875801Siedowsemakemask(struct sockaddr_storage *ssp, int bitlen) 235974462Salfred{ 236075801Siedowse u_char *p; 236175801Siedowse int bits, i, len; 236274462Salfred 236375801Siedowse if ((p = sa_rawaddr((struct sockaddr *)ssp, &len)) == NULL) 236475801Siedowse return (-1); 236575801Siedowse if (bitlen > len * NBBY) 236675801Siedowse return (-1); 236774462Salfred 236875801Siedowse for (i = 0; i < len; i++) { 236975801Siedowse bits = (bitlen > NBBY) ? NBBY : bitlen; 237075801Siedowse *p++ = (1 << bits) - 1; 237175801Siedowse bitlen -= bits; 237274462Salfred } 237375801Siedowse return 0; 237474462Salfred} 237574462Salfred 237675801Siedowse/* 237775801Siedowse * Check that the sockaddr is a valid netmask. Returns 0 if the mask 237875801Siedowse * is acceptable (i.e. of the form 1...10....0). 237975801Siedowse */ 238075801Siedowseint 238175801Siedowsecheckmask(struct sockaddr *sa) 238274462Salfred{ 238375801Siedowse u_char *mask; 238475801Siedowse int i, len; 238574462Salfred 238675801Siedowse if ((mask = sa_rawaddr(sa, &len)) == NULL) 238775801Siedowse return (-1); 238875801Siedowse 238975801Siedowse for (i = 0; i < len; i++) 239075801Siedowse if (mask[i] != 0xff) 239175801Siedowse break; 239275801Siedowse if (i < len) { 239375801Siedowse if (~mask[i] & (u_char)(~mask[i] + 1)) 239475801Siedowse return (-1); 239575801Siedowse i++; 239674462Salfred } 239775801Siedowse for (; i < len; i++) 239875801Siedowse if (mask[i] != 0) 239975801Siedowse return (-1); 240075801Siedowse return (0); 240174462Salfred} 240274462Salfred 240375801Siedowse/* 240475801Siedowse * Compare two sockaddrs according to a specified mask. Return zero if 240575801Siedowse * `sa1' matches `sa2' when filtered by the netmask in `samask'. 240675801Siedowse * If samask is NULL, perform a full comparision. 240775801Siedowse */ 240875801Siedowseint 240975801Siedowsesacmp(struct sockaddr *sa1, struct sockaddr *sa2, struct sockaddr *samask) 241074462Salfred{ 241175801Siedowse unsigned char *p1, *p2, *mask; 241275801Siedowse int len, i; 241374462Salfred 241475801Siedowse if (sa1->sa_family != sa2->sa_family || 241575801Siedowse (p1 = sa_rawaddr(sa1, &len)) == NULL || 241675801Siedowse (p2 = sa_rawaddr(sa2, NULL)) == NULL) 241775801Siedowse return (1); 241875801Siedowse 241975801Siedowse switch (sa1->sa_family) { 242074462Salfred case AF_INET6: 242175801Siedowse if (((struct sockaddr_in6 *)sa1)->sin6_scope_id != 242275801Siedowse ((struct sockaddr_in6 *)sa2)->sin6_scope_id) 242375801Siedowse return (1); 242474462Salfred break; 242574462Salfred } 242674462Salfred 242775801Siedowse /* Simple binary comparison if no mask specified. */ 242875801Siedowse if (samask == NULL) 242975801Siedowse return (memcmp(p1, p2, len)); 243074462Salfred 243175801Siedowse /* Set up the mask, and do a mask-based comparison. */ 243275801Siedowse if (sa1->sa_family != samask->sa_family || 243375801Siedowse (mask = sa_rawaddr(samask, NULL)) == NULL) 243475801Siedowse return (1); 243574462Salfred 243675801Siedowse for (i = 0; i < len; i++) 243775801Siedowse if ((p1[i] & mask[i]) != (p2[i] & mask[i])) 243875801Siedowse return (1); 243975801Siedowse return (0); 244074462Salfred} 244174462Salfred 244275801Siedowse/* 244375801Siedowse * Return a pointer to the part of the sockaddr that contains the 244475801Siedowse * raw address, and set *nbytes to its length in bytes. Returns 244575801Siedowse * NULL if the address family is unknown. 244675801Siedowse */ 244775801Siedowsevoid * 244875801Siedowsesa_rawaddr(struct sockaddr *sa, int *nbytes) { 244975801Siedowse void *p; 245074462Salfred int len; 245174462Salfred 245275801Siedowse switch (sa->sa_family) { 245374462Salfred case AF_INET: 245475801Siedowse len = sizeof(((struct sockaddr_in *)sa)->sin_addr); 245575801Siedowse p = &((struct sockaddr_in *)sa)->sin_addr; 245674462Salfred break; 245774462Salfred case AF_INET6: 245875801Siedowse len = sizeof(((struct sockaddr_in6 *)sa)->sin6_addr); 245975801Siedowse p = &((struct sockaddr_in6 *)sa)->sin6_addr; 246074462Salfred break; 246174462Salfred default: 246275801Siedowse p = NULL; 246375801Siedowse len = 0; 246474462Salfred } 246574462Salfred 246675801Siedowse if (nbytes != NULL) 246775801Siedowse *nbytes = len; 246875801Siedowse return (p); 246974462Salfred} 247074462Salfred 247175754Siedowsevoid 247275754Siedowsehuphandler(int sig) 247375754Siedowse{ 247475754Siedowse got_sighup = 1; 247575754Siedowse} 247675754Siedowse 247774462Salfredvoid terminate(sig) 247874462Salfredint sig; 247974462Salfred{ 248074462Salfred close(mountdlockfd); 248174462Salfred unlink(MOUNTDLOCK); 248274792Salfred rpcb_unset(RPCPROG_MNT, RPCMNT_VER1, NULL); 248374792Salfred rpcb_unset(RPCPROG_MNT, RPCMNT_VER3, NULL); 248474462Salfred exit (0); 248574462Salfred} 2486