mountd.c revision 103949
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 103949 2002-09-25 04:06:37Z mike $"; 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> 78103949Smike#include <limits.h> 791558Srgrimes#include <netdb.h> 801558Srgrimes#include <pwd.h> 811558Srgrimes#include <signal.h> 821558Srgrimes#include <stdio.h> 831558Srgrimes#include <stdlib.h> 841558Srgrimes#include <string.h> 851558Srgrimes#include <unistd.h> 861558Srgrimes#include "pathnames.h" 871558Srgrimes 881558Srgrimes#ifdef DEBUG 891558Srgrimes#include <stdarg.h> 901558Srgrimes#endif 911558Srgrimes 9274462Salfred#ifndef MOUNTDLOCK 9374462Salfred#define MOUNTDLOCK "/var/run/mountd.lock" 9474462Salfred#endif 9574462Salfred 961558Srgrimes/* 971558Srgrimes * Structures for keeping the mount list and export list 981558Srgrimes */ 991558Srgrimesstruct mountlist { 1001558Srgrimes struct mountlist *ml_next; 1011558Srgrimes char ml_host[RPCMNT_NAMELEN+1]; 1021558Srgrimes char ml_dirp[RPCMNT_PATHLEN+1]; 1031558Srgrimes}; 1041558Srgrimes 1051558Srgrimesstruct dirlist { 1061558Srgrimes struct dirlist *dp_left; 1071558Srgrimes struct dirlist *dp_right; 1081558Srgrimes int dp_flag; 1091558Srgrimes struct hostlist *dp_hosts; /* List of hosts this dir exported to */ 1101558Srgrimes char dp_dirp[1]; /* Actually malloc'd to size of dir */ 1111558Srgrimes}; 1121558Srgrimes/* dp_flag bits */ 1131558Srgrimes#define DP_DEFSET 0x1 1149336Sdfr#define DP_HOSTSET 0x2 1151558Srgrimes 1161558Srgrimesstruct exportlist { 1171558Srgrimes struct exportlist *ex_next; 1181558Srgrimes struct dirlist *ex_dirl; 1191558Srgrimes struct dirlist *ex_defdir; 1201558Srgrimes int ex_flag; 1211558Srgrimes fsid_t ex_fs; 1221558Srgrimes char *ex_fsdir; 12327447Sdfr char *ex_indexfile; 1241558Srgrimes}; 1251558Srgrimes/* ex_flag bits */ 1261558Srgrimes#define EX_LINKED 0x1 1271558Srgrimes 1281558Srgrimesstruct netmsk { 12974462Salfred struct sockaddr_storage nt_net; 13075801Siedowse struct sockaddr_storage nt_mask; 13142144Sdfr char *nt_name; 1321558Srgrimes}; 1331558Srgrimes 1341558Srgrimesunion grouptypes { 13574462Salfred struct addrinfo *gt_addrinfo; 1361558Srgrimes struct netmsk gt_net; 1371558Srgrimes}; 1381558Srgrimes 1391558Srgrimesstruct grouplist { 1401558Srgrimes int gr_type; 1411558Srgrimes union grouptypes gr_ptr; 1421558Srgrimes struct grouplist *gr_next; 1431558Srgrimes}; 1441558Srgrimes/* Group types */ 1451558Srgrimes#define GT_NULL 0x0 1461558Srgrimes#define GT_HOST 0x1 1471558Srgrimes#define GT_NET 0x2 14875641Siedowse#define GT_DEFAULT 0x3 1497401Swpaul#define GT_IGNORE 0x5 1501558Srgrimes 1511558Srgrimesstruct hostlist { 1529336Sdfr int ht_flag; /* Uses DP_xx bits */ 1531558Srgrimes struct grouplist *ht_grp; 1541558Srgrimes struct hostlist *ht_next; 1551558Srgrimes}; 1561558Srgrimes 1579336Sdfrstruct fhreturn { 1589336Sdfr int fhr_flag; 1599336Sdfr int fhr_vers; 1609336Sdfr nfsfh_t fhr_fh; 1619336Sdfr}; 1629336Sdfr 1631558Srgrimes/* Global defs */ 16492882Simpchar *add_expdir(struct dirlist **, char *, int); 16592882Simpvoid add_dlist(struct dirlist **, struct dirlist *, 16692882Simp struct grouplist *, int); 16792882Simpvoid add_mlist(char *, char *); 16892882Simpint check_dirpath(char *); 16992882Simpint check_options(struct dirlist *); 17075801Siedowseint checkmask(struct sockaddr *sa); 17192882Simpint chk_host(struct dirlist *, struct sockaddr *, int *, int *); 17275635Siedowsevoid del_mlist(char *hostp, char *dirp); 17392882Simpstruct dirlist *dirp_search(struct dirlist *, char *); 17492882Simpint do_mount(struct exportlist *, struct grouplist *, int, 17592882Simp struct xucred *, char *, int, struct statfs *); 17692882Simpint do_opt(char **, char **, struct exportlist *, struct grouplist *, 17792882Simp int *, int *, struct xucred *); 17892882Simpstruct exportlist *ex_search(fsid_t *); 17992882Simpstruct exportlist *get_exp(void); 18092882Simpvoid free_dir(struct dirlist *); 18192882Simpvoid free_exp(struct exportlist *); 18292882Simpvoid free_grp(struct grouplist *); 18392882Simpvoid free_host(struct hostlist *); 18492882Simpvoid get_exportlist(void); 18592882Simpint get_host(char *, struct grouplist *, struct grouplist *); 18692882Simpstruct hostlist *get_ht(void); 18792882Simpint get_line(void); 18892882Simpvoid get_mountlist(void); 18992882Simpint get_net(char *, struct netmsk *, int); 19092882Simpvoid getexp_err(struct exportlist *, struct grouplist *); 19192882Simpstruct grouplist *get_grp(void); 19292882Simpvoid hang_dirp(struct dirlist *, struct grouplist *, 19392882Simp struct exportlist *, int); 19475754Siedowsevoid huphandler(int sig); 19575801Siedowseint makemask(struct sockaddr_storage *ssp, int bitlen); 19692882Simpvoid mntsrv(struct svc_req *, SVCXPRT *); 19792882Simpvoid nextfield(char **, char **); 19892882Simpvoid out_of_mem(void); 19992882Simpvoid parsecred(char *, struct xucred *); 200100117Salfredint put_exlist(struct dirlist *, XDR *, struct dirlist *, int *, int); 20175801Siedowsevoid *sa_rawaddr(struct sockaddr *sa, int *nbytes); 20275801Siedowseint sacmp(struct sockaddr *sa1, struct sockaddr *sa2, 20375801Siedowse struct sockaddr *samask); 20492882Simpint scan_tree(struct dirlist *, struct sockaddr *); 20592882Simpstatic void usage(void); 20692882Simpint xdr_dir(XDR *, char *); 20792882Simpint xdr_explist(XDR *, caddr_t); 208100117Salfredint xdr_explist_brief(XDR *, caddr_t); 20992882Simpint xdr_fhs(XDR *, caddr_t); 21092882Simpint xdr_mlist(XDR *, caddr_t); 21192882Simpvoid terminate(int); 2121558Srgrimes 2131558Srgrimesstruct exportlist *exphead; 2141558Srgrimesstruct mountlist *mlhead; 2151558Srgrimesstruct grouplist *grphead; 2161558Srgrimeschar exname[MAXPATHLEN]; 21772650Sgreenstruct xucred def_anon = { 21891354Sdd XUCRED_VERSION, 21972650Sgreen (uid_t)-2, 2201558Srgrimes 1, 22172650Sgreen { (gid_t)-2 }, 22272650Sgreen NULL 2231558Srgrimes}; 22425087Sdfrint force_v2 = 0; 2259336Sdfrint resvport_only = 1; 2269336Sdfrint dir_only = 1; 22731705Sguidoint log = 0; 22875754Siedowseint got_sighup = 0; 22974462Salfred 2301558Srgrimesint opt_flags; 23174462Salfredstatic int have_v6 = 1; 23274462Salfred#ifdef NI_WITHSCOPEID 23374462Salfredstatic const int ninumeric = NI_NUMERICHOST | NI_WITHSCOPEID; 23474462Salfred#else 23574462Salfredstatic const int ninumeric = NI_NUMERICHOST; 23674462Salfred#endif 23774462Salfred 23874462Salfredint mountdlockfd; 23975801Siedowse/* Bits for opt_flags above */ 2401558Srgrimes#define OP_MAPROOT 0x01 2411558Srgrimes#define OP_MAPALL 0x02 24283653Speter/* 0x4 free */ 2431558Srgrimes#define OP_MASK 0x08 2441558Srgrimes#define OP_NET 0x10 2451558Srgrimes#define OP_ALLDIRS 0x40 24675801Siedowse#define OP_HAVEMASK 0x80 /* A mask was specified or inferred. */ 247100336Sjoerg#define OP_QUIET 0x100 24874462Salfred#define OP_MASKLEN 0x200 2491558Srgrimes 2501558Srgrimes#ifdef DEBUG 2511558Srgrimesint debug = 1; 25292882Simpvoid SYSLOG(int, const char *, ...) __printflike(2, 3); 2531558Srgrimes#define syslog SYSLOG 2541558Srgrimes#else 2551558Srgrimesint debug = 0; 2561558Srgrimes#endif 2571558Srgrimes 2581558Srgrimes/* 2591558Srgrimes * Mountd server for NFS mount protocol as described in: 2601558Srgrimes * NFS: Network File System Protocol Specification, RFC1094, Appendix A 2611558Srgrimes * The optional arguments are the exports file name 2621558Srgrimes * default: _PATH_EXPORTS 2631558Srgrimes * and "-n" to allow nonroot mount. 2641558Srgrimes */ 2651558Srgrimesint 2661558Srgrimesmain(argc, argv) 2671558Srgrimes int argc; 2681558Srgrimes char **argv; 2691558Srgrimes{ 27075754Siedowse fd_set readfds; 27174462Salfred SVCXPRT *udptransp, *tcptransp, *udp6transp, *tcp6transp; 27274462Salfred struct netconfig *udpconf, *tcpconf, *udp6conf, *tcp6conf; 27374462Salfred int udpsock, tcpsock, udp6sock, tcp6sock; 27474462Salfred int xcreated = 0, s; 27574462Salfred int one = 1; 27696622Siedowse int c; 2771558Srgrimes 27875635Siedowse udp6conf = tcp6conf = NULL; 27975635Siedowse udp6sock = tcp6sock = NULL; 28075635Siedowse 28174462Salfred /* Check that another mountd isn't already running. */ 28274462Salfred if ((mountdlockfd = (open(MOUNTDLOCK, O_RDONLY|O_CREAT, 0444))) == -1) 28374462Salfred err(1, "%s", MOUNTDLOCK); 28474462Salfred 28574462Salfred if(flock(mountdlockfd, LOCK_EX|LOCK_NB) == -1 && errno == EWOULDBLOCK) 28674462Salfred errx(1, "another rpc.mountd is already running. Aborting"); 28774462Salfred s = socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP); 28874462Salfred if (s < 0) 28974462Salfred have_v6 = 0; 29074462Salfred else 29174462Salfred close(s); 29283687Speter if (modfind("nfsserver") < 0) { 29383687Speter /* Not present in kernel, try loading it */ 29483687Speter if (kldload("nfsserver") < 0 || modfind("nfsserver") < 0) 29583687Speter errx(1, "NFS server is not available or loadable"); 2962999Swollman } 2972999Swollman 29831665Sguido while ((c = getopt(argc, argv, "2dlnr")) != -1) 2991558Srgrimes switch (c) { 30025087Sdfr case '2': 30125087Sdfr force_v2 = 1; 30225087Sdfr break; 3039336Sdfr case 'n': 3049336Sdfr resvport_only = 0; 3059336Sdfr break; 3069336Sdfr case 'r': 3079336Sdfr dir_only = 0; 3089336Sdfr break; 3098688Sphk case 'd': 3108688Sphk debug = debug ? 0 : 1; 3118688Sphk break; 31231656Sguido case 'l': 31331656Sguido log = 1; 31431656Sguido break; 3151558Srgrimes default: 31637663Scharnier usage(); 3171558Srgrimes }; 3181558Srgrimes argc -= optind; 3191558Srgrimes argv += optind; 3201558Srgrimes grphead = (struct grouplist *)NULL; 3211558Srgrimes exphead = (struct exportlist *)NULL; 3221558Srgrimes mlhead = (struct mountlist *)NULL; 3231558Srgrimes if (argc == 1) { 3241558Srgrimes strncpy(exname, *argv, MAXPATHLEN-1); 3251558Srgrimes exname[MAXPATHLEN-1] = '\0'; 3261558Srgrimes } else 3271558Srgrimes strcpy(exname, _PATH_EXPORTS); 3281558Srgrimes openlog("mountd", LOG_PID, LOG_DAEMON); 3291558Srgrimes if (debug) 33037663Scharnier warnx("getting export list"); 3311558Srgrimes get_exportlist(); 3321558Srgrimes if (debug) 33337663Scharnier warnx("getting mount list"); 3341558Srgrimes get_mountlist(); 3351558Srgrimes if (debug) 33637663Scharnier warnx("here we go"); 3371558Srgrimes if (debug == 0) { 3381558Srgrimes daemon(0, 0); 3391558Srgrimes signal(SIGINT, SIG_IGN); 3401558Srgrimes signal(SIGQUIT, SIG_IGN); 3411558Srgrimes } 34275754Siedowse signal(SIGHUP, huphandler); 34374462Salfred signal(SIGTERM, terminate); 3441558Srgrimes { FILE *pidfile = fopen(_PATH_MOUNTDPID, "w"); 3451558Srgrimes if (pidfile != NULL) { 3461558Srgrimes fprintf(pidfile, "%d\n", getpid()); 3471558Srgrimes fclose(pidfile); 3481558Srgrimes } 3491558Srgrimes } 35074462Salfred rpcb_unset(RPCPROG_MNT, RPCMNT_VER1, NULL); 35174462Salfred rpcb_unset(RPCPROG_MNT, RPCMNT_VER3, NULL); 35274462Salfred udpsock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); 35374462Salfred tcpsock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); 35474791Salfred udpconf = getnetconfigent("udp"); 35574791Salfred tcpconf = getnetconfigent("tcp"); 35674791Salfred if (!have_v6) 35774791Salfred goto skip_v6; 35874462Salfred udp6sock = socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP); 35974462Salfred tcp6sock = socket(AF_INET6, SOCK_STREAM, IPPROTO_TCP); 36074462Salfred /* 36174462Salfred * We're doing host-based access checks here, so don't allow 36274462Salfred * v4-in-v6 to confuse things. The kernel will disable it 36374462Salfred * by default on NFS sockets too. 36474462Salfred */ 36574462Salfred if (udp6sock != -1 && setsockopt(udp6sock, IPPROTO_IPV6, 366100505Sume IPV6_V6ONLY, &one, sizeof one) < 0){ 36774462Salfred syslog(LOG_ERR, "can't disable v4-in-v6 on UDP socket"); 36874462Salfred exit(1); 36974462Salfred } 37074462Salfred if (tcp6sock != -1 && setsockopt(tcp6sock, IPPROTO_IPV6, 371100505Sume IPV6_V6ONLY, &one, sizeof one) < 0){ 37274462Salfred syslog(LOG_ERR, "can't disable v4-in-v6 on UDP socket"); 37374462Salfred exit(1); 37474462Salfred } 37574462Salfred udp6conf = getnetconfigent("udp6"); 37674462Salfred tcp6conf = getnetconfigent("tcp6"); 37774791Salfred 37874791Salfredskip_v6: 37924759Sguido if (!resvport_only) { 38083687Speter if (sysctlbyname("vfs.nfsrv.nfs_privport", NULL, NULL, 38183687Speter &resvport_only, sizeof(resvport_only)) != 0 && 38283687Speter errno != ENOENT) { 38324759Sguido syslog(LOG_ERR, "sysctl: %m"); 38424759Sguido exit(1); 38524759Sguido } 38624330Sguido } 38774462Salfred if (udpsock != -1 && udpconf != NULL) { 38874462Salfred bindresvport(udpsock, NULL); 38974462Salfred udptransp = svc_dg_create(udpsock, 0, 0); 39074462Salfred if (udptransp != NULL) { 39174462Salfred if (!svc_reg(udptransp, RPCPROG_MNT, RPCMNT_VER1, 39274462Salfred mntsrv, udpconf)) 39374462Salfred syslog(LOG_WARNING, "can't register UDP RPCMNT_VER1 service"); 39474462Salfred else 39574462Salfred xcreated++; 39674462Salfred if (!force_v2) { 39774462Salfred if (!svc_reg(udptransp, RPCPROG_MNT, RPCMNT_VER3, 39874462Salfred mntsrv, udpconf)) 39974462Salfred syslog(LOG_WARNING, "can't register UDP RPCMNT_VER3 service"); 40074462Salfred else 40174462Salfred xcreated++; 40274462Salfred } 40374462Salfred } else 40474462Salfred syslog(LOG_WARNING, "can't create UDP services"); 40574462Salfred 40674462Salfred } 40774462Salfred if (tcpsock != -1 && tcpconf != NULL) { 40874462Salfred bindresvport(tcpsock, NULL); 40974462Salfred listen(tcpsock, SOMAXCONN); 41074462Salfred tcptransp = svc_vc_create(tcpsock, 0, 0); 41174462Salfred if (tcptransp != NULL) { 41274462Salfred if (!svc_reg(tcptransp, RPCPROG_MNT, RPCMNT_VER1, 41374462Salfred mntsrv, tcpconf)) 41474462Salfred syslog(LOG_WARNING, "can't register TCP RPCMNT_VER1 service"); 41574462Salfred else 41674462Salfred xcreated++; 41774462Salfred if (!force_v2) { 41874462Salfred if (!svc_reg(tcptransp, RPCPROG_MNT, RPCMNT_VER3, 41974462Salfred mntsrv, tcpconf)) 42074462Salfred syslog(LOG_WARNING, "can't register TCP RPCMNT_VER3 service"); 42174462Salfred else 42274462Salfred xcreated++; 42374462Salfred } 42474462Salfred } else 42574462Salfred syslog(LOG_WARNING, "can't create TCP service"); 42674462Salfred 42774462Salfred } 42874791Salfred if (have_v6 && udp6sock != -1 && udp6conf != NULL) { 42974462Salfred bindresvport(udp6sock, NULL); 43074462Salfred udp6transp = svc_dg_create(udp6sock, 0, 0); 43174462Salfred if (udp6transp != NULL) { 43274462Salfred if (!svc_reg(udp6transp, RPCPROG_MNT, RPCMNT_VER1, 43374462Salfred mntsrv, udp6conf)) 43474462Salfred syslog(LOG_WARNING, "can't register UDP6 RPCMNT_VER1 service"); 43574462Salfred else 43674462Salfred xcreated++; 43774462Salfred if (!force_v2) { 43874462Salfred if (!svc_reg(udp6transp, RPCPROG_MNT, RPCMNT_VER3, 43974462Salfred mntsrv, udp6conf)) 44074462Salfred syslog(LOG_WARNING, "can't register UDP6 RPCMNT_VER3 service"); 44174462Salfred else 44274462Salfred xcreated++; 44374462Salfred } 44474462Salfred } else 44574462Salfred syslog(LOG_WARNING, "can't create UDP6 service"); 44674462Salfred 44774462Salfred } 44874791Salfred if (have_v6 && tcp6sock != -1 && tcp6conf != NULL) { 44974462Salfred bindresvport(tcp6sock, NULL); 45074462Salfred listen(tcp6sock, SOMAXCONN); 45174462Salfred tcp6transp = svc_vc_create(tcp6sock, 0, 0); 45274462Salfred if (tcp6transp != NULL) { 45374462Salfred if (!svc_reg(tcp6transp, RPCPROG_MNT, RPCMNT_VER1, 45474462Salfred mntsrv, tcp6conf)) 45574462Salfred syslog(LOG_WARNING, "can't register TCP6 RPCMNT_VER1 service"); 45674462Salfred else 45774462Salfred xcreated++; 45874462Salfred if (!force_v2) { 45974462Salfred if (!svc_reg(tcp6transp, RPCPROG_MNT, RPCMNT_VER3, 46074462Salfred mntsrv, tcp6conf)) 46174462Salfred syslog(LOG_WARNING, "can't register TCP6 RPCMNT_VER3 service"); 46274462Salfred else 46374462Salfred xcreated++; 46474462Salfred } 46574462Salfred } else 46674462Salfred syslog(LOG_WARNING, "can't create TCP6 service"); 46774462Salfred 46874462Salfred } 46974462Salfred if (xcreated == 0) { 47074462Salfred syslog(LOG_ERR, "could not create any services"); 4711558Srgrimes exit(1); 4721558Srgrimes } 47375754Siedowse 47475754Siedowse /* Expand svc_run() here so that we can call get_exportlist(). */ 47575754Siedowse for (;;) { 47675754Siedowse if (got_sighup) { 47775754Siedowse get_exportlist(); 47875754Siedowse got_sighup = 0; 47975754Siedowse } 48075754Siedowse readfds = svc_fdset; 48175754Siedowse switch (select(svc_maxfd + 1, &readfds, NULL, NULL, NULL)) { 48275754Siedowse case -1: 48375754Siedowse if (errno == EINTR) 48475754Siedowse continue; 48575754Siedowse syslog(LOG_ERR, "mountd died: select: %m"); 48675754Siedowse exit(1); 48775754Siedowse case 0: 48875754Siedowse continue; 48975754Siedowse default: 49075754Siedowse svc_getreqset(&readfds); 49175754Siedowse } 49275754Siedowse } 4931558Srgrimes} 4941558Srgrimes 49537663Scharnierstatic void 49637663Scharnierusage() 49737663Scharnier{ 49837663Scharnier fprintf(stderr, 49937663Scharnier "usage: mountd [-2] [-d] [-l] [-n] [-r] [export_file]\n"); 50037663Scharnier exit(1); 50137663Scharnier} 50237663Scharnier 5031558Srgrimes/* 5041558Srgrimes * The mount rpc service 5051558Srgrimes */ 5061558Srgrimesvoid 5071558Srgrimesmntsrv(rqstp, transp) 5081558Srgrimes struct svc_req *rqstp; 5091558Srgrimes SVCXPRT *transp; 5101558Srgrimes{ 5111558Srgrimes struct exportlist *ep; 5121558Srgrimes struct dirlist *dp; 5139336Sdfr struct fhreturn fhr; 5141558Srgrimes struct stat stb; 5151558Srgrimes struct statfs fsb; 51674462Salfred struct addrinfo *ai; 51774462Salfred char host[NI_MAXHOST], numerichost[NI_MAXHOST]; 51874462Salfred int lookup_failed = 1; 51974462Salfred struct sockaddr *saddr; 5209336Sdfr u_short sport; 52123681Speter char rpcpath[RPCMNT_PATHLEN + 1], dirpath[MAXPATHLEN]; 52228911Sguido int bad = 0, defset, hostset; 5239336Sdfr sigset_t sighup_mask; 5241558Srgrimes 5259336Sdfr sigemptyset(&sighup_mask); 5269336Sdfr sigaddset(&sighup_mask, SIGHUP); 52774462Salfred saddr = svc_getrpccaller(transp)->buf; 52874462Salfred switch (saddr->sa_family) { 52974462Salfred case AF_INET6: 53075635Siedowse sport = ntohs(((struct sockaddr_in6 *)saddr)->sin6_port); 53174462Salfred break; 53274462Salfred case AF_INET: 53375635Siedowse sport = ntohs(((struct sockaddr_in *)saddr)->sin_port); 53474462Salfred break; 53574462Salfred default: 53674462Salfred syslog(LOG_ERR, "request from unknown address family"); 53774462Salfred return; 53874462Salfred } 53974462Salfred lookup_failed = getnameinfo(saddr, saddr->sa_len, host, sizeof host, 54074462Salfred NULL, 0, 0); 54174462Salfred getnameinfo(saddr, saddr->sa_len, numerichost, 54274462Salfred sizeof numerichost, NULL, 0, NI_NUMERICHOST); 54374462Salfred ai = NULL; 5441558Srgrimes switch (rqstp->rq_proc) { 5451558Srgrimes case NULLPROC: 546100117Salfred if (!svc_sendreply(transp, xdr_void, NULL)) 54737663Scharnier syslog(LOG_ERR, "can't send reply"); 5481558Srgrimes return; 5491558Srgrimes case RPCMNT_MOUNT: 5509336Sdfr if (sport >= IPPORT_RESERVED && resvport_only) { 55131656Sguido syslog(LOG_NOTICE, 55231656Sguido "mount request from %s from unprivileged port", 55374462Salfred numerichost); 5541558Srgrimes svcerr_weakauth(transp); 5551558Srgrimes return; 5561558Srgrimes } 5571558Srgrimes if (!svc_getargs(transp, xdr_dir, rpcpath)) { 55831656Sguido syslog(LOG_NOTICE, "undecodable mount request from %s", 55974462Salfred numerichost); 5601558Srgrimes svcerr_decode(transp); 5611558Srgrimes return; 5621558Srgrimes } 5631558Srgrimes 5641558Srgrimes /* 5651558Srgrimes * Get the real pathname and make sure it is a directory 5669336Sdfr * or a regular file if the -r option was specified 5679336Sdfr * and it exists. 5681558Srgrimes */ 56951968Salfred if (realpath(rpcpath, dirpath) == NULL || 5701558Srgrimes stat(dirpath, &stb) < 0 || 5719336Sdfr (!S_ISDIR(stb.st_mode) && 57274462Salfred (dir_only || !S_ISREG(stb.st_mode))) || 5731558Srgrimes statfs(dirpath, &fsb) < 0) { 5741558Srgrimes chdir("/"); /* Just in case realpath doesn't */ 57531656Sguido syslog(LOG_NOTICE, 57637663Scharnier "mount request from %s for non existent path %s", 57774462Salfred numerichost, dirpath); 5781558Srgrimes if (debug) 57937663Scharnier warnx("stat failed on %s", dirpath); 58028911Sguido bad = ENOENT; /* We will send error reply later */ 5811558Srgrimes } 5821558Srgrimes 5831558Srgrimes /* Check in the exports list */ 5849336Sdfr sigprocmask(SIG_BLOCK, &sighup_mask, NULL); 5851558Srgrimes ep = ex_search(&fsb.f_fsid); 5869336Sdfr hostset = defset = 0; 5879336Sdfr if (ep && (chk_host(ep->ex_defdir, saddr, &defset, &hostset) || 5881558Srgrimes ((dp = dirp_search(ep->ex_dirl, dirpath)) && 58974462Salfred chk_host(dp, saddr, &defset, &hostset)) || 59074462Salfred (defset && scan_tree(ep->ex_defdir, saddr) == 0 && 59174462Salfred scan_tree(ep->ex_dirl, saddr) == 0))) { 59228911Sguido if (bad) { 59328911Sguido if (!svc_sendreply(transp, xdr_long, 59428911Sguido (caddr_t)&bad)) 59537663Scharnier syslog(LOG_ERR, "can't send reply"); 59628911Sguido sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 59728911Sguido return; 59828911Sguido } 5999336Sdfr if (hostset & DP_HOSTSET) 6009336Sdfr fhr.fhr_flag = hostset; 6019336Sdfr else 6029336Sdfr fhr.fhr_flag = defset; 6039336Sdfr fhr.fhr_vers = rqstp->rq_vers; 6041558Srgrimes /* Get the file handle */ 60523681Speter memset(&fhr.fhr_fh, 0, sizeof(nfsfh_t)); 6069336Sdfr if (getfh(dirpath, (fhandle_t *)&fhr.fhr_fh) < 0) { 6071558Srgrimes bad = errno; 60837663Scharnier syslog(LOG_ERR, "can't get fh for %s", dirpath); 6091558Srgrimes if (!svc_sendreply(transp, xdr_long, 6101558Srgrimes (caddr_t)&bad)) 61137663Scharnier syslog(LOG_ERR, "can't send reply"); 6129336Sdfr sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 6131558Srgrimes return; 6141558Srgrimes } 6159336Sdfr if (!svc_sendreply(transp, xdr_fhs, (caddr_t)&fhr)) 61637663Scharnier syslog(LOG_ERR, "can't send reply"); 61774462Salfred if (!lookup_failed) 61874462Salfred add_mlist(host, dirpath); 6191558Srgrimes else 62074462Salfred add_mlist(numerichost, dirpath); 6211558Srgrimes if (debug) 62237663Scharnier warnx("mount successful"); 62331656Sguido if (log) 62431656Sguido syslog(LOG_NOTICE, 62531656Sguido "mount request succeeded from %s for %s", 62674462Salfred numerichost, dirpath); 62731656Sguido } else { 6281558Srgrimes bad = EACCES; 62931656Sguido syslog(LOG_NOTICE, 63031656Sguido "mount request denied from %s for %s", 63174462Salfred numerichost, dirpath); 63231656Sguido } 63328911Sguido 63428911Sguido if (bad && !svc_sendreply(transp, xdr_long, (caddr_t)&bad)) 63537663Scharnier syslog(LOG_ERR, "can't send reply"); 6369336Sdfr sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 6371558Srgrimes return; 6381558Srgrimes case RPCMNT_DUMP: 6391558Srgrimes if (!svc_sendreply(transp, xdr_mlist, (caddr_t)NULL)) 64037663Scharnier syslog(LOG_ERR, "can't send reply"); 64131656Sguido else if (log) 64231656Sguido syslog(LOG_NOTICE, 64331656Sguido "dump request succeeded from %s", 64474462Salfred numerichost); 6451558Srgrimes return; 6461558Srgrimes case RPCMNT_UMOUNT: 6479336Sdfr if (sport >= IPPORT_RESERVED && resvport_only) { 64831656Sguido syslog(LOG_NOTICE, 64931656Sguido "umount request from %s from unprivileged port", 65074462Salfred numerichost); 6511558Srgrimes svcerr_weakauth(transp); 6521558Srgrimes return; 6531558Srgrimes } 65451968Salfred if (!svc_getargs(transp, xdr_dir, rpcpath)) { 65531656Sguido syslog(LOG_NOTICE, "undecodable umount request from %s", 65674462Salfred numerichost); 6571558Srgrimes svcerr_decode(transp); 6581558Srgrimes return; 6591558Srgrimes } 66051968Salfred if (realpath(rpcpath, dirpath) == NULL) { 66151968Salfred syslog(LOG_NOTICE, "umount request from %s " 66251968Salfred "for non existent path %s", 66374462Salfred numerichost, dirpath); 66451968Salfred } 6651558Srgrimes if (!svc_sendreply(transp, xdr_void, (caddr_t)NULL)) 66637663Scharnier syslog(LOG_ERR, "can't send reply"); 66774462Salfred if (!lookup_failed) 66875635Siedowse del_mlist(host, dirpath); 66975635Siedowse del_mlist(numerichost, dirpath); 67031656Sguido if (log) 67131656Sguido syslog(LOG_NOTICE, 67231656Sguido "umount request succeeded from %s for %s", 67374462Salfred numerichost, dirpath); 6741558Srgrimes return; 6751558Srgrimes case RPCMNT_UMNTALL: 6769336Sdfr if (sport >= IPPORT_RESERVED && resvport_only) { 67731656Sguido syslog(LOG_NOTICE, 67831656Sguido "umountall request from %s from unprivileged port", 67974462Salfred numerichost); 6801558Srgrimes svcerr_weakauth(transp); 6811558Srgrimes return; 6821558Srgrimes } 6831558Srgrimes if (!svc_sendreply(transp, xdr_void, (caddr_t)NULL)) 68437663Scharnier syslog(LOG_ERR, "can't send reply"); 68574462Salfred if (!lookup_failed) 68675635Siedowse del_mlist(host, NULL); 68775635Siedowse del_mlist(numerichost, NULL); 68831656Sguido if (log) 68931656Sguido syslog(LOG_NOTICE, 69031656Sguido "umountall request succeeded from %s", 69174462Salfred numerichost); 6921558Srgrimes return; 6931558Srgrimes case RPCMNT_EXPORT: 6941558Srgrimes if (!svc_sendreply(transp, xdr_explist, (caddr_t)NULL)) 695100117Salfred if (!svc_sendreply(transp, xdr_explist_brief, (caddr_t)NULL)) 696100117Salfred syslog(LOG_ERR, "can't send reply"); 69731656Sguido if (log) 69831656Sguido syslog(LOG_NOTICE, 69931656Sguido "export request succeeded from %s", 70074462Salfred numerichost); 7011558Srgrimes return; 7021558Srgrimes default: 7031558Srgrimes svcerr_noproc(transp); 7041558Srgrimes return; 7051558Srgrimes } 7061558Srgrimes} 7071558Srgrimes 7081558Srgrimes/* 7091558Srgrimes * Xdr conversion for a dirpath string 7101558Srgrimes */ 7111558Srgrimesint 7121558Srgrimesxdr_dir(xdrsp, dirp) 7131558Srgrimes XDR *xdrsp; 7141558Srgrimes char *dirp; 7151558Srgrimes{ 7161558Srgrimes return (xdr_string(xdrsp, &dirp, RPCMNT_PATHLEN)); 7171558Srgrimes} 7181558Srgrimes 7191558Srgrimes/* 7209336Sdfr * Xdr routine to generate file handle reply 7211558Srgrimes */ 7221558Srgrimesint 7239336Sdfrxdr_fhs(xdrsp, cp) 7241558Srgrimes XDR *xdrsp; 7259336Sdfr caddr_t cp; 7261558Srgrimes{ 72792806Sobrien struct fhreturn *fhrp = (struct fhreturn *)cp; 7289336Sdfr u_long ok = 0, len, auth; 7291558Srgrimes 7301558Srgrimes if (!xdr_long(xdrsp, &ok)) 7311558Srgrimes return (0); 7329336Sdfr switch (fhrp->fhr_vers) { 7339336Sdfr case 1: 7349336Sdfr return (xdr_opaque(xdrsp, (caddr_t)&fhrp->fhr_fh, NFSX_V2FH)); 7359336Sdfr case 3: 7369336Sdfr len = NFSX_V3FH; 7379336Sdfr if (!xdr_long(xdrsp, &len)) 7389336Sdfr return (0); 7399336Sdfr if (!xdr_opaque(xdrsp, (caddr_t)&fhrp->fhr_fh, len)) 7409336Sdfr return (0); 74183653Speter auth = RPCAUTH_UNIX; 7429336Sdfr len = 1; 7439336Sdfr if (!xdr_long(xdrsp, &len)) 7449336Sdfr return (0); 7459336Sdfr return (xdr_long(xdrsp, &auth)); 7469336Sdfr }; 7479336Sdfr return (0); 7481558Srgrimes} 7491558Srgrimes 7501558Srgrimesint 7511558Srgrimesxdr_mlist(xdrsp, cp) 7521558Srgrimes XDR *xdrsp; 7531558Srgrimes caddr_t cp; 7541558Srgrimes{ 7551558Srgrimes struct mountlist *mlp; 7561558Srgrimes int true = 1; 7571558Srgrimes int false = 0; 7581558Srgrimes char *strp; 7591558Srgrimes 7601558Srgrimes mlp = mlhead; 7611558Srgrimes while (mlp) { 7621558Srgrimes if (!xdr_bool(xdrsp, &true)) 7631558Srgrimes return (0); 7641558Srgrimes strp = &mlp->ml_host[0]; 7651558Srgrimes if (!xdr_string(xdrsp, &strp, RPCMNT_NAMELEN)) 7661558Srgrimes return (0); 7671558Srgrimes strp = &mlp->ml_dirp[0]; 7681558Srgrimes if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN)) 7691558Srgrimes return (0); 7701558Srgrimes mlp = mlp->ml_next; 7711558Srgrimes } 7721558Srgrimes if (!xdr_bool(xdrsp, &false)) 7731558Srgrimes return (0); 7741558Srgrimes return (1); 7751558Srgrimes} 7761558Srgrimes 7771558Srgrimes/* 7781558Srgrimes * Xdr conversion for export list 7791558Srgrimes */ 7801558Srgrimesint 781100117Salfredxdr_explist_common(xdrsp, cp, brief) 7821558Srgrimes XDR *xdrsp; 7831558Srgrimes caddr_t cp; 784100117Salfred int brief; 7851558Srgrimes{ 7861558Srgrimes struct exportlist *ep; 7871558Srgrimes int false = 0; 7889336Sdfr int putdef; 7899336Sdfr sigset_t sighup_mask; 7901558Srgrimes 7919336Sdfr sigemptyset(&sighup_mask); 7929336Sdfr sigaddset(&sighup_mask, SIGHUP); 7939336Sdfr sigprocmask(SIG_BLOCK, &sighup_mask, NULL); 7941558Srgrimes ep = exphead; 7951558Srgrimes while (ep) { 7961558Srgrimes putdef = 0; 797100117Salfred if (put_exlist(ep->ex_dirl, xdrsp, ep->ex_defdir, 798100117Salfred &putdef, brief)) 7991558Srgrimes goto errout; 8001558Srgrimes if (ep->ex_defdir && putdef == 0 && 8011558Srgrimes put_exlist(ep->ex_defdir, xdrsp, (struct dirlist *)NULL, 802100117Salfred &putdef, brief)) 8031558Srgrimes goto errout; 8041558Srgrimes ep = ep->ex_next; 8051558Srgrimes } 8069336Sdfr sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 8071558Srgrimes if (!xdr_bool(xdrsp, &false)) 8081558Srgrimes return (0); 8091558Srgrimes return (1); 8101558Srgrimeserrout: 8119336Sdfr sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 8121558Srgrimes return (0); 8131558Srgrimes} 8141558Srgrimes 8151558Srgrimes/* 8161558Srgrimes * Called from xdr_explist() to traverse the tree and export the 8171558Srgrimes * directory paths. 8181558Srgrimes */ 8191558Srgrimesint 820100117Salfredput_exlist(dp, xdrsp, adp, putdefp, brief) 8211558Srgrimes struct dirlist *dp; 8221558Srgrimes XDR *xdrsp; 8231558Srgrimes struct dirlist *adp; 8241558Srgrimes int *putdefp; 825100117Salfred int brief; 8261558Srgrimes{ 8271558Srgrimes struct grouplist *grp; 8281558Srgrimes struct hostlist *hp; 8291558Srgrimes int true = 1; 8301558Srgrimes int false = 0; 8311558Srgrimes int gotalldir = 0; 8321558Srgrimes char *strp; 8331558Srgrimes 8341558Srgrimes if (dp) { 835100117Salfred if (put_exlist(dp->dp_left, xdrsp, adp, putdefp, brief)) 8361558Srgrimes return (1); 8371558Srgrimes if (!xdr_bool(xdrsp, &true)) 8381558Srgrimes return (1); 8391558Srgrimes strp = dp->dp_dirp; 8401558Srgrimes if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN)) 8411558Srgrimes return (1); 8421558Srgrimes if (adp && !strcmp(dp->dp_dirp, adp->dp_dirp)) { 8431558Srgrimes gotalldir = 1; 8441558Srgrimes *putdefp = 1; 8451558Srgrimes } 846100117Salfred if (brief) { 847100117Salfred if (!xdr_bool(xdrsp, &true)) 848100117Salfred return (1); 849100117Salfred strp = "(...)"; 850100117Salfred if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN)) 851100117Salfred return (1); 852100117Salfred } else if ((dp->dp_flag & DP_DEFSET) == 0 && 8531558Srgrimes (gotalldir == 0 || (adp->dp_flag & DP_DEFSET) == 0)) { 8541558Srgrimes hp = dp->dp_hosts; 8551558Srgrimes while (hp) { 8561558Srgrimes grp = hp->ht_grp; 8571558Srgrimes if (grp->gr_type == GT_HOST) { 8581558Srgrimes if (!xdr_bool(xdrsp, &true)) 8591558Srgrimes return (1); 86074462Salfred strp = grp->gr_ptr.gt_addrinfo->ai_canonname; 8618871Srgrimes if (!xdr_string(xdrsp, &strp, 8621558Srgrimes RPCMNT_NAMELEN)) 8631558Srgrimes return (1); 8641558Srgrimes } else if (grp->gr_type == GT_NET) { 8651558Srgrimes if (!xdr_bool(xdrsp, &true)) 8661558Srgrimes return (1); 8671558Srgrimes strp = grp->gr_ptr.gt_net.nt_name; 8688871Srgrimes if (!xdr_string(xdrsp, &strp, 8691558Srgrimes RPCMNT_NAMELEN)) 8701558Srgrimes return (1); 8711558Srgrimes } 8721558Srgrimes hp = hp->ht_next; 8731558Srgrimes if (gotalldir && hp == (struct hostlist *)NULL) { 8741558Srgrimes hp = adp->dp_hosts; 8751558Srgrimes gotalldir = 0; 8761558Srgrimes } 8771558Srgrimes } 8781558Srgrimes } 8791558Srgrimes if (!xdr_bool(xdrsp, &false)) 8801558Srgrimes return (1); 881100117Salfred if (put_exlist(dp->dp_right, xdrsp, adp, putdefp, brief)) 8821558Srgrimes return (1); 8831558Srgrimes } 8841558Srgrimes return (0); 8851558Srgrimes} 8861558Srgrimes 887100117Salfredint 888100117Salfredxdr_explist(xdrsp, cp) 889100117Salfred XDR *xdrsp; 890100117Salfred caddr_t cp; 891100117Salfred{ 892100117Salfred 893100117Salfred return xdr_explist_common(xdrsp, cp, 0); 894100117Salfred} 895100117Salfred 896100117Salfredint 897100117Salfredxdr_explist_brief(xdrsp, cp) 898100117Salfred XDR *xdrsp; 899100117Salfred caddr_t cp; 900100117Salfred{ 901100117Salfred 902100117Salfred return xdr_explist_common(xdrsp, cp, 1); 903100117Salfred} 904100117Salfred 90596622Siedowsechar *line; 90696622Siedowseint linesize; 9071558SrgrimesFILE *exp_file; 9081558Srgrimes 9091558Srgrimes/* 9101558Srgrimes * Get the export list 9111558Srgrimes */ 9121558Srgrimesvoid 9131558Srgrimesget_exportlist() 9141558Srgrimes{ 9151558Srgrimes struct exportlist *ep, *ep2; 9161558Srgrimes struct grouplist *grp, *tgrp; 9171558Srgrimes struct exportlist **epp; 9181558Srgrimes struct dirlist *dirhead; 9191558Srgrimes struct statfs fsb, *fsp; 92072650Sgreen struct xucred anon; 9211558Srgrimes char *cp, *endcp, *dirp, *hst, *usr, *dom, savedc; 9221558Srgrimes int len, has_host, exflags, got_nondir, dirplen, num, i, netgrp; 9231558Srgrimes 92451968Salfred dirp = NULL; 92551968Salfred dirplen = 0; 92651968Salfred 9271558Srgrimes /* 9281558Srgrimes * First, get rid of the old list 9291558Srgrimes */ 9301558Srgrimes ep = exphead; 9311558Srgrimes while (ep) { 9321558Srgrimes ep2 = ep; 9331558Srgrimes ep = ep->ex_next; 9341558Srgrimes free_exp(ep2); 9351558Srgrimes } 9361558Srgrimes exphead = (struct exportlist *)NULL; 9371558Srgrimes 9381558Srgrimes grp = grphead; 9391558Srgrimes while (grp) { 9401558Srgrimes tgrp = grp; 9411558Srgrimes grp = grp->gr_next; 9421558Srgrimes free_grp(tgrp); 9431558Srgrimes } 9441558Srgrimes grphead = (struct grouplist *)NULL; 9451558Srgrimes 9461558Srgrimes /* 9471558Srgrimes * And delete exports that are in the kernel for all local 94896707Strhodes * filesystems. 94996707Strhodes * XXX: Should know how to handle all local exportable filesystems 95023681Speter * instead of just "ufs". 9511558Srgrimes */ 9521558Srgrimes num = getmntinfo(&fsp, MNT_NOWAIT); 9531558Srgrimes for (i = 0; i < num; i++) { 9541558Srgrimes union { 9551558Srgrimes struct ufs_args ua; 9561558Srgrimes struct iso_args ia; 9579336Sdfr struct msdosfs_args da; 95854093Ssemenu struct ntfs_args na; 9591558Srgrimes } targs; 9601558Srgrimes 96177435Sphk if (!strcmp(fsp->f_fstypename, "ufs") || 96277577Sru !strcmp(fsp->f_fstypename, "msdosfs") || 96354093Ssemenu !strcmp(fsp->f_fstypename, "ntfs") || 96423681Speter !strcmp(fsp->f_fstypename, "cd9660")) { 9659336Sdfr targs.ua.fspec = NULL; 9669336Sdfr targs.ua.export.ex_flags = MNT_DELEXPORT; 9679336Sdfr if (mount(fsp->f_fstypename, fsp->f_mntonname, 96877405Siedowse fsp->f_flags | MNT_UPDATE, (caddr_t)&targs) < 0 && 96977405Siedowse errno != ENOENT) 97077405Siedowse syslog(LOG_ERR, 97177405Siedowse "can't delete exports for %s: %m", 97274462Salfred fsp->f_mntonname); 9731558Srgrimes } 9741558Srgrimes fsp++; 9751558Srgrimes } 9761558Srgrimes 9771558Srgrimes /* 9781558Srgrimes * Read in the exports file and build the list, calling 9791558Srgrimes * mount() as we go along to push the export rules into the kernel. 9801558Srgrimes */ 9811558Srgrimes if ((exp_file = fopen(exname, "r")) == NULL) { 98237663Scharnier syslog(LOG_ERR, "can't open %s", exname); 9831558Srgrimes exit(2); 9841558Srgrimes } 9851558Srgrimes dirhead = (struct dirlist *)NULL; 9861558Srgrimes while (get_line()) { 9871558Srgrimes if (debug) 98837663Scharnier warnx("got line %s", line); 9891558Srgrimes cp = line; 9901558Srgrimes nextfield(&cp, &endcp); 9911558Srgrimes if (*cp == '#') 9921558Srgrimes goto nextline; 9931558Srgrimes 9941558Srgrimes /* 9951558Srgrimes * Set defaults. 9961558Srgrimes */ 9971558Srgrimes has_host = FALSE; 9981558Srgrimes anon = def_anon; 9991558Srgrimes exflags = MNT_EXPORTED; 10001558Srgrimes got_nondir = 0; 10011558Srgrimes opt_flags = 0; 10021558Srgrimes ep = (struct exportlist *)NULL; 10031558Srgrimes 10041558Srgrimes /* 10051558Srgrimes * Create new exports list entry 10061558Srgrimes */ 10071558Srgrimes len = endcp-cp; 10081558Srgrimes tgrp = grp = get_grp(); 10091558Srgrimes while (len > 0) { 10101558Srgrimes if (len > RPCMNT_NAMELEN) { 10111558Srgrimes getexp_err(ep, tgrp); 10121558Srgrimes goto nextline; 10131558Srgrimes } 10141558Srgrimes if (*cp == '-') { 10151558Srgrimes if (ep == (struct exportlist *)NULL) { 10161558Srgrimes getexp_err(ep, tgrp); 10171558Srgrimes goto nextline; 10181558Srgrimes } 10191558Srgrimes if (debug) 102037663Scharnier warnx("doing opt %s", cp); 10211558Srgrimes got_nondir = 1; 10221558Srgrimes if (do_opt(&cp, &endcp, ep, grp, &has_host, 10231558Srgrimes &exflags, &anon)) { 10241558Srgrimes getexp_err(ep, tgrp); 10251558Srgrimes goto nextline; 10261558Srgrimes } 10271558Srgrimes } else if (*cp == '/') { 10281558Srgrimes savedc = *endcp; 10291558Srgrimes *endcp = '\0'; 10301558Srgrimes if (check_dirpath(cp) && 10311558Srgrimes statfs(cp, &fsb) >= 0) { 10321558Srgrimes if (got_nondir) { 103337663Scharnier syslog(LOG_ERR, "dirs must be first"); 10341558Srgrimes getexp_err(ep, tgrp); 10351558Srgrimes goto nextline; 10361558Srgrimes } 10371558Srgrimes if (ep) { 10381558Srgrimes if (ep->ex_fs.val[0] != fsb.f_fsid.val[0] || 10391558Srgrimes ep->ex_fs.val[1] != fsb.f_fsid.val[1]) { 10401558Srgrimes getexp_err(ep, tgrp); 10411558Srgrimes goto nextline; 10421558Srgrimes } 10431558Srgrimes } else { 10441558Srgrimes /* 10451558Srgrimes * See if this directory is already 10461558Srgrimes * in the list. 10471558Srgrimes */ 10481558Srgrimes ep = ex_search(&fsb.f_fsid); 10491558Srgrimes if (ep == (struct exportlist *)NULL) { 10501558Srgrimes ep = get_exp(); 10511558Srgrimes ep->ex_fs = fsb.f_fsid; 10521558Srgrimes ep->ex_fsdir = (char *) 10531558Srgrimes malloc(strlen(fsb.f_mntonname) + 1); 10541558Srgrimes if (ep->ex_fsdir) 10551558Srgrimes strcpy(ep->ex_fsdir, 10561558Srgrimes fsb.f_mntonname); 10571558Srgrimes else 10581558Srgrimes out_of_mem(); 10591558Srgrimes if (debug) 106074462Salfred warnx("making new ep fs=0x%x,0x%x", 106174462Salfred fsb.f_fsid.val[0], 106274462Salfred fsb.f_fsid.val[1]); 10631558Srgrimes } else if (debug) 106437663Scharnier warnx("found ep fs=0x%x,0x%x", 10651558Srgrimes fsb.f_fsid.val[0], 10661558Srgrimes fsb.f_fsid.val[1]); 10671558Srgrimes } 10681558Srgrimes 10691558Srgrimes /* 10701558Srgrimes * Add dirpath to export mount point. 10711558Srgrimes */ 10721558Srgrimes dirp = add_expdir(&dirhead, cp, len); 10731558Srgrimes dirplen = len; 10741558Srgrimes } else { 10751558Srgrimes getexp_err(ep, tgrp); 10761558Srgrimes goto nextline; 10771558Srgrimes } 10781558Srgrimes *endcp = savedc; 10791558Srgrimes } else { 10801558Srgrimes savedc = *endcp; 10811558Srgrimes *endcp = '\0'; 10821558Srgrimes got_nondir = 1; 10831558Srgrimes if (ep == (struct exportlist *)NULL) { 10841558Srgrimes getexp_err(ep, tgrp); 10851558Srgrimes goto nextline; 10861558Srgrimes } 10871558Srgrimes 10881558Srgrimes /* 10891558Srgrimes * Get the host or netgroup. 10901558Srgrimes */ 10911558Srgrimes setnetgrent(cp); 10921558Srgrimes netgrp = getnetgrent(&hst, &usr, &dom); 10931558Srgrimes do { 10941558Srgrimes if (has_host) { 10951558Srgrimes grp->gr_next = get_grp(); 10961558Srgrimes grp = grp->gr_next; 10971558Srgrimes } 10981558Srgrimes if (netgrp) { 109937003Sjoerg if (hst == 0) { 110037663Scharnier syslog(LOG_ERR, 110137663Scharnier "null hostname in netgroup %s, skipping", cp); 110237004Sjoerg grp->gr_type = GT_IGNORE; 110337003Sjoerg } else if (get_host(hst, grp, tgrp)) { 110437663Scharnier syslog(LOG_ERR, 110537663Scharnier "bad host %s in netgroup %s, skipping", hst, cp); 110629317Sjlemon grp->gr_type = GT_IGNORE; 11071558Srgrimes } 11087401Swpaul } else if (get_host(cp, grp, tgrp)) { 110937663Scharnier syslog(LOG_ERR, "bad host %s, skipping", cp); 111029317Sjlemon grp->gr_type = GT_IGNORE; 11111558Srgrimes } 11121558Srgrimes has_host = TRUE; 11131558Srgrimes } while (netgrp && getnetgrent(&hst, &usr, &dom)); 11141558Srgrimes endnetgrent(); 11151558Srgrimes *endcp = savedc; 11161558Srgrimes } 11171558Srgrimes cp = endcp; 11181558Srgrimes nextfield(&cp, &endcp); 11191558Srgrimes len = endcp - cp; 11201558Srgrimes } 11211558Srgrimes if (check_options(dirhead)) { 11221558Srgrimes getexp_err(ep, tgrp); 11231558Srgrimes goto nextline; 11241558Srgrimes } 11251558Srgrimes if (!has_host) { 112675641Siedowse grp->gr_type = GT_DEFAULT; 11271558Srgrimes if (debug) 112837663Scharnier warnx("adding a default entry"); 11291558Srgrimes 11301558Srgrimes /* 11311558Srgrimes * Don't allow a network export coincide with a list of 11321558Srgrimes * host(s) on the same line. 11331558Srgrimes */ 11341558Srgrimes } else if ((opt_flags & OP_NET) && tgrp->gr_next) { 113575801Siedowse syslog(LOG_ERR, "network/host conflict"); 11361558Srgrimes getexp_err(ep, tgrp); 11371558Srgrimes goto nextline; 113829317Sjlemon 113974462Salfred /* 114074462Salfred * If an export list was specified on this line, make sure 114129317Sjlemon * that we have at least one valid entry, otherwise skip it. 114229317Sjlemon */ 114329317Sjlemon } else { 114429317Sjlemon grp = tgrp; 114574462Salfred while (grp && grp->gr_type == GT_IGNORE) 114629317Sjlemon grp = grp->gr_next; 114729317Sjlemon if (! grp) { 114829317Sjlemon getexp_err(ep, tgrp); 114929317Sjlemon goto nextline; 115029317Sjlemon } 11511558Srgrimes } 11521558Srgrimes 11531558Srgrimes /* 11541558Srgrimes * Loop through hosts, pushing the exports into the kernel. 11551558Srgrimes * After loop, tgrp points to the start of the list and 11561558Srgrimes * grp points to the last entry in the list. 11571558Srgrimes */ 11581558Srgrimes grp = tgrp; 11591558Srgrimes do { 116075635Siedowse if (do_mount(ep, grp, exflags, &anon, dirp, dirplen, 116175635Siedowse &fsb)) { 116275635Siedowse getexp_err(ep, tgrp); 116375635Siedowse goto nextline; 116475635Siedowse } 11651558Srgrimes } while (grp->gr_next && (grp = grp->gr_next)); 11661558Srgrimes 11671558Srgrimes /* 11681558Srgrimes * Success. Update the data structures. 11691558Srgrimes */ 11701558Srgrimes if (has_host) { 11719336Sdfr hang_dirp(dirhead, tgrp, ep, opt_flags); 11721558Srgrimes grp->gr_next = grphead; 11731558Srgrimes grphead = tgrp; 11741558Srgrimes } else { 11751558Srgrimes hang_dirp(dirhead, (struct grouplist *)NULL, ep, 11769336Sdfr opt_flags); 11771558Srgrimes free_grp(grp); 11781558Srgrimes } 11791558Srgrimes dirhead = (struct dirlist *)NULL; 11801558Srgrimes if ((ep->ex_flag & EX_LINKED) == 0) { 11811558Srgrimes ep2 = exphead; 11821558Srgrimes epp = &exphead; 11831558Srgrimes 11841558Srgrimes /* 11851558Srgrimes * Insert in the list in alphabetical order. 11861558Srgrimes */ 11871558Srgrimes while (ep2 && strcmp(ep2->ex_fsdir, ep->ex_fsdir) < 0) { 11881558Srgrimes epp = &ep2->ex_next; 11891558Srgrimes ep2 = ep2->ex_next; 11901558Srgrimes } 11911558Srgrimes if (ep2) 11921558Srgrimes ep->ex_next = ep2; 11931558Srgrimes *epp = ep; 11941558Srgrimes ep->ex_flag |= EX_LINKED; 11951558Srgrimes } 11961558Srgrimesnextline: 11971558Srgrimes if (dirhead) { 11981558Srgrimes free_dir(dirhead); 11991558Srgrimes dirhead = (struct dirlist *)NULL; 12001558Srgrimes } 12011558Srgrimes } 12021558Srgrimes fclose(exp_file); 12031558Srgrimes} 12041558Srgrimes 12051558Srgrimes/* 12061558Srgrimes * Allocate an export list element 12071558Srgrimes */ 12081558Srgrimesstruct exportlist * 12091558Srgrimesget_exp() 12101558Srgrimes{ 12111558Srgrimes struct exportlist *ep; 12121558Srgrimes 12131558Srgrimes ep = (struct exportlist *)malloc(sizeof (struct exportlist)); 12141558Srgrimes if (ep == (struct exportlist *)NULL) 12151558Srgrimes out_of_mem(); 121623681Speter memset(ep, 0, sizeof(struct exportlist)); 12171558Srgrimes return (ep); 12181558Srgrimes} 12191558Srgrimes 12201558Srgrimes/* 12211558Srgrimes * Allocate a group list element 12221558Srgrimes */ 12231558Srgrimesstruct grouplist * 12241558Srgrimesget_grp() 12251558Srgrimes{ 12261558Srgrimes struct grouplist *gp; 12271558Srgrimes 12281558Srgrimes gp = (struct grouplist *)malloc(sizeof (struct grouplist)); 12291558Srgrimes if (gp == (struct grouplist *)NULL) 12301558Srgrimes out_of_mem(); 123123681Speter memset(gp, 0, sizeof(struct grouplist)); 12321558Srgrimes return (gp); 12331558Srgrimes} 12341558Srgrimes 12351558Srgrimes/* 12361558Srgrimes * Clean up upon an error in get_exportlist(). 12371558Srgrimes */ 12381558Srgrimesvoid 12391558Srgrimesgetexp_err(ep, grp) 12401558Srgrimes struct exportlist *ep; 12411558Srgrimes struct grouplist *grp; 12421558Srgrimes{ 12431558Srgrimes struct grouplist *tgrp; 12441558Srgrimes 1245100336Sjoerg if (!(opt_flags & OP_QUIET)) 1246100336Sjoerg syslog(LOG_ERR, "bad exports list line %s", line); 12471558Srgrimes if (ep && (ep->ex_flag & EX_LINKED) == 0) 12481558Srgrimes free_exp(ep); 12491558Srgrimes while (grp) { 12501558Srgrimes tgrp = grp; 12511558Srgrimes grp = grp->gr_next; 12521558Srgrimes free_grp(tgrp); 12531558Srgrimes } 12541558Srgrimes} 12551558Srgrimes 12561558Srgrimes/* 12571558Srgrimes * Search the export list for a matching fs. 12581558Srgrimes */ 12591558Srgrimesstruct exportlist * 12601558Srgrimesex_search(fsid) 12611558Srgrimes fsid_t *fsid; 12621558Srgrimes{ 12631558Srgrimes struct exportlist *ep; 12641558Srgrimes 12651558Srgrimes ep = exphead; 12661558Srgrimes while (ep) { 12671558Srgrimes if (ep->ex_fs.val[0] == fsid->val[0] && 12681558Srgrimes ep->ex_fs.val[1] == fsid->val[1]) 12691558Srgrimes return (ep); 12701558Srgrimes ep = ep->ex_next; 12711558Srgrimes } 12721558Srgrimes return (ep); 12731558Srgrimes} 12741558Srgrimes 12751558Srgrimes/* 12761558Srgrimes * Add a directory path to the list. 12771558Srgrimes */ 12781558Srgrimeschar * 12791558Srgrimesadd_expdir(dpp, cp, len) 12801558Srgrimes struct dirlist **dpp; 12811558Srgrimes char *cp; 12821558Srgrimes int len; 12831558Srgrimes{ 12841558Srgrimes struct dirlist *dp; 12851558Srgrimes 12861558Srgrimes dp = (struct dirlist *)malloc(sizeof (struct dirlist) + len); 128737663Scharnier if (dp == (struct dirlist *)NULL) 128837663Scharnier out_of_mem(); 12891558Srgrimes dp->dp_left = *dpp; 12901558Srgrimes dp->dp_right = (struct dirlist *)NULL; 12911558Srgrimes dp->dp_flag = 0; 12921558Srgrimes dp->dp_hosts = (struct hostlist *)NULL; 12931558Srgrimes strcpy(dp->dp_dirp, cp); 12941558Srgrimes *dpp = dp; 12951558Srgrimes return (dp->dp_dirp); 12961558Srgrimes} 12971558Srgrimes 12981558Srgrimes/* 12991558Srgrimes * Hang the dir list element off the dirpath binary tree as required 13001558Srgrimes * and update the entry for host. 13011558Srgrimes */ 13021558Srgrimesvoid 13039336Sdfrhang_dirp(dp, grp, ep, flags) 13041558Srgrimes struct dirlist *dp; 13051558Srgrimes struct grouplist *grp; 13061558Srgrimes struct exportlist *ep; 13079336Sdfr int flags; 13081558Srgrimes{ 13091558Srgrimes struct hostlist *hp; 13101558Srgrimes struct dirlist *dp2; 13111558Srgrimes 13129336Sdfr if (flags & OP_ALLDIRS) { 13131558Srgrimes if (ep->ex_defdir) 13141558Srgrimes free((caddr_t)dp); 13151558Srgrimes else 13161558Srgrimes ep->ex_defdir = dp; 13179336Sdfr if (grp == (struct grouplist *)NULL) { 13181558Srgrimes ep->ex_defdir->dp_flag |= DP_DEFSET; 13199336Sdfr } else while (grp) { 13201558Srgrimes hp = get_ht(); 13211558Srgrimes hp->ht_grp = grp; 13221558Srgrimes hp->ht_next = ep->ex_defdir->dp_hosts; 13231558Srgrimes ep->ex_defdir->dp_hosts = hp; 13241558Srgrimes grp = grp->gr_next; 13251558Srgrimes } 13261558Srgrimes } else { 13271558Srgrimes 13281558Srgrimes /* 132937663Scharnier * Loop through the directories adding them to the tree. 13301558Srgrimes */ 13311558Srgrimes while (dp) { 13321558Srgrimes dp2 = dp->dp_left; 13339336Sdfr add_dlist(&ep->ex_dirl, dp, grp, flags); 13341558Srgrimes dp = dp2; 13351558Srgrimes } 13361558Srgrimes } 13371558Srgrimes} 13381558Srgrimes 13391558Srgrimes/* 13401558Srgrimes * Traverse the binary tree either updating a node that is already there 13411558Srgrimes * for the new directory or adding the new node. 13421558Srgrimes */ 13431558Srgrimesvoid 13449336Sdfradd_dlist(dpp, newdp, grp, flags) 13451558Srgrimes struct dirlist **dpp; 13461558Srgrimes struct dirlist *newdp; 13471558Srgrimes struct grouplist *grp; 13489336Sdfr int flags; 13491558Srgrimes{ 13501558Srgrimes struct dirlist *dp; 13511558Srgrimes struct hostlist *hp; 13521558Srgrimes int cmp; 13531558Srgrimes 13541558Srgrimes dp = *dpp; 13551558Srgrimes if (dp) { 13561558Srgrimes cmp = strcmp(dp->dp_dirp, newdp->dp_dirp); 13571558Srgrimes if (cmp > 0) { 13589336Sdfr add_dlist(&dp->dp_left, newdp, grp, flags); 13591558Srgrimes return; 13601558Srgrimes } else if (cmp < 0) { 13619336Sdfr add_dlist(&dp->dp_right, newdp, grp, flags); 13621558Srgrimes return; 13631558Srgrimes } else 13641558Srgrimes free((caddr_t)newdp); 13651558Srgrimes } else { 13661558Srgrimes dp = newdp; 13671558Srgrimes dp->dp_left = (struct dirlist *)NULL; 13681558Srgrimes *dpp = dp; 13691558Srgrimes } 13701558Srgrimes if (grp) { 13711558Srgrimes 13721558Srgrimes /* 13731558Srgrimes * Hang all of the host(s) off of the directory point. 13741558Srgrimes */ 13751558Srgrimes do { 13761558Srgrimes hp = get_ht(); 13771558Srgrimes hp->ht_grp = grp; 13781558Srgrimes hp->ht_next = dp->dp_hosts; 13791558Srgrimes dp->dp_hosts = hp; 13801558Srgrimes grp = grp->gr_next; 13811558Srgrimes } while (grp); 13829336Sdfr } else { 13831558Srgrimes dp->dp_flag |= DP_DEFSET; 13849336Sdfr } 13851558Srgrimes} 13861558Srgrimes 13871558Srgrimes/* 13881558Srgrimes * Search for a dirpath on the export point. 13891558Srgrimes */ 13901558Srgrimesstruct dirlist * 139174462Salfreddirp_search(dp, dirp) 13921558Srgrimes struct dirlist *dp; 139374462Salfred char *dirp; 13941558Srgrimes{ 13951558Srgrimes int cmp; 13961558Srgrimes 13971558Srgrimes if (dp) { 139874462Salfred cmp = strcmp(dp->dp_dirp, dirp); 13991558Srgrimes if (cmp > 0) 140074462Salfred return (dirp_search(dp->dp_left, dirp)); 14011558Srgrimes else if (cmp < 0) 140274462Salfred return (dirp_search(dp->dp_right, dirp)); 14031558Srgrimes else 14041558Srgrimes return (dp); 14051558Srgrimes } 14061558Srgrimes return (dp); 14071558Srgrimes} 14081558Srgrimes 14091558Srgrimes/* 14101558Srgrimes * Scan for a host match in a directory tree. 14111558Srgrimes */ 14121558Srgrimesint 14139336Sdfrchk_host(dp, saddr, defsetp, hostsetp) 14141558Srgrimes struct dirlist *dp; 141574462Salfred struct sockaddr *saddr; 14161558Srgrimes int *defsetp; 14179336Sdfr int *hostsetp; 14181558Srgrimes{ 14191558Srgrimes struct hostlist *hp; 14201558Srgrimes struct grouplist *grp; 142174462Salfred struct addrinfo *ai; 14221558Srgrimes 14231558Srgrimes if (dp) { 14241558Srgrimes if (dp->dp_flag & DP_DEFSET) 14259336Sdfr *defsetp = dp->dp_flag; 14261558Srgrimes hp = dp->dp_hosts; 14271558Srgrimes while (hp) { 14281558Srgrimes grp = hp->ht_grp; 14291558Srgrimes switch (grp->gr_type) { 14301558Srgrimes case GT_HOST: 143174462Salfred ai = grp->gr_ptr.gt_addrinfo; 143274462Salfred for (; ai; ai = ai->ai_next) { 143375801Siedowse if (!sacmp(ai->ai_addr, saddr, NULL)) { 143474462Salfred *hostsetp = 143574462Salfred (hp->ht_flag | DP_HOSTSET); 143674462Salfred return (1); 143774462Salfred } 14389336Sdfr } 143975801Siedowse break; 14401558Srgrimes case GT_NET: 144175801Siedowse if (!sacmp(saddr, (struct sockaddr *) 144275801Siedowse &grp->gr_ptr.gt_net.nt_net, 144375801Siedowse (struct sockaddr *) 144475801Siedowse &grp->gr_ptr.gt_net.nt_mask)) { 144574462Salfred *hostsetp = (hp->ht_flag | DP_HOSTSET); 144674462Salfred return (1); 144774462Salfred } 144875801Siedowse break; 144975801Siedowse } 14501558Srgrimes hp = hp->ht_next; 14511558Srgrimes } 14521558Srgrimes } 14531558Srgrimes return (0); 14541558Srgrimes} 14551558Srgrimes 14561558Srgrimes/* 14571558Srgrimes * Scan tree for a host that matches the address. 14581558Srgrimes */ 14591558Srgrimesint 14601558Srgrimesscan_tree(dp, saddr) 14611558Srgrimes struct dirlist *dp; 146274462Salfred struct sockaddr *saddr; 14631558Srgrimes{ 14649336Sdfr int defset, hostset; 14651558Srgrimes 14661558Srgrimes if (dp) { 14671558Srgrimes if (scan_tree(dp->dp_left, saddr)) 14681558Srgrimes return (1); 14699336Sdfr if (chk_host(dp, saddr, &defset, &hostset)) 14701558Srgrimes return (1); 14711558Srgrimes if (scan_tree(dp->dp_right, saddr)) 14721558Srgrimes return (1); 14731558Srgrimes } 14741558Srgrimes return (0); 14751558Srgrimes} 14761558Srgrimes 14771558Srgrimes/* 14781558Srgrimes * Traverse the dirlist tree and free it up. 14791558Srgrimes */ 14801558Srgrimesvoid 14811558Srgrimesfree_dir(dp) 14821558Srgrimes struct dirlist *dp; 14831558Srgrimes{ 14841558Srgrimes 14851558Srgrimes if (dp) { 14861558Srgrimes free_dir(dp->dp_left); 14871558Srgrimes free_dir(dp->dp_right); 14881558Srgrimes free_host(dp->dp_hosts); 14891558Srgrimes free((caddr_t)dp); 14901558Srgrimes } 14911558Srgrimes} 14921558Srgrimes 14931558Srgrimes/* 14941558Srgrimes * Parse the option string and update fields. 14951558Srgrimes * Option arguments may either be -<option>=<value> or 14961558Srgrimes * -<option> <value> 14971558Srgrimes */ 14981558Srgrimesint 14991558Srgrimesdo_opt(cpp, endcpp, ep, grp, has_hostp, exflagsp, cr) 15001558Srgrimes char **cpp, **endcpp; 15011558Srgrimes struct exportlist *ep; 15021558Srgrimes struct grouplist *grp; 15031558Srgrimes int *has_hostp; 15041558Srgrimes int *exflagsp; 150572650Sgreen struct xucred *cr; 15061558Srgrimes{ 15071558Srgrimes char *cpoptarg, *cpoptend; 15081558Srgrimes char *cp, *endcp, *cpopt, savedc, savedc2; 15091558Srgrimes int allflag, usedarg; 15101558Srgrimes 151151968Salfred savedc2 = '\0'; 15121558Srgrimes cpopt = *cpp; 15131558Srgrimes cpopt++; 15141558Srgrimes cp = *endcpp; 15151558Srgrimes savedc = *cp; 15161558Srgrimes *cp = '\0'; 15171558Srgrimes while (cpopt && *cpopt) { 15181558Srgrimes allflag = 1; 15191558Srgrimes usedarg = -2; 152037663Scharnier if ((cpoptend = strchr(cpopt, ','))) { 15211558Srgrimes *cpoptend++ = '\0'; 152237663Scharnier if ((cpoptarg = strchr(cpopt, '='))) 15231558Srgrimes *cpoptarg++ = '\0'; 15241558Srgrimes } else { 152537663Scharnier if ((cpoptarg = strchr(cpopt, '='))) 15261558Srgrimes *cpoptarg++ = '\0'; 15271558Srgrimes else { 15281558Srgrimes *cp = savedc; 15291558Srgrimes nextfield(&cp, &endcp); 15301558Srgrimes **endcpp = '\0'; 15311558Srgrimes if (endcp > cp && *cp != '-') { 15321558Srgrimes cpoptarg = cp; 15331558Srgrimes savedc2 = *endcp; 15341558Srgrimes *endcp = '\0'; 15351558Srgrimes usedarg = 0; 15361558Srgrimes } 15371558Srgrimes } 15381558Srgrimes } 15391558Srgrimes if (!strcmp(cpopt, "ro") || !strcmp(cpopt, "o")) { 15401558Srgrimes *exflagsp |= MNT_EXRDONLY; 15411558Srgrimes } else if (cpoptarg && (!strcmp(cpopt, "maproot") || 15421558Srgrimes !(allflag = strcmp(cpopt, "mapall")) || 15431558Srgrimes !strcmp(cpopt, "root") || !strcmp(cpopt, "r"))) { 15441558Srgrimes usedarg++; 15451558Srgrimes parsecred(cpoptarg, cr); 15461558Srgrimes if (allflag == 0) { 15471558Srgrimes *exflagsp |= MNT_EXPORTANON; 15481558Srgrimes opt_flags |= OP_MAPALL; 15491558Srgrimes } else 15501558Srgrimes opt_flags |= OP_MAPROOT; 15511558Srgrimes } else if (cpoptarg && (!strcmp(cpopt, "mask") || 155275801Siedowse !strcmp(cpopt, "m"))) { 15531558Srgrimes if (get_net(cpoptarg, &grp->gr_ptr.gt_net, 1)) { 155437663Scharnier syslog(LOG_ERR, "bad mask: %s", cpoptarg); 15551558Srgrimes return (1); 15561558Srgrimes } 15571558Srgrimes usedarg++; 15581558Srgrimes opt_flags |= OP_MASK; 15591558Srgrimes } else if (cpoptarg && (!strcmp(cpopt, "network") || 15601558Srgrimes !strcmp(cpopt, "n"))) { 156174462Salfred if (strchr(cpoptarg, '/') != NULL) { 156274462Salfred if (debug) 156374462Salfred fprintf(stderr, "setting OP_MASKLEN\n"); 156474462Salfred opt_flags |= OP_MASKLEN; 156574462Salfred } 15661558Srgrimes if (grp->gr_type != GT_NULL) { 156737663Scharnier syslog(LOG_ERR, "network/host conflict"); 15681558Srgrimes return (1); 15691558Srgrimes } else if (get_net(cpoptarg, &grp->gr_ptr.gt_net, 0)) { 157037663Scharnier syslog(LOG_ERR, "bad net: %s", cpoptarg); 15711558Srgrimes return (1); 15721558Srgrimes } 15731558Srgrimes grp->gr_type = GT_NET; 15741558Srgrimes *has_hostp = 1; 15751558Srgrimes usedarg++; 15761558Srgrimes opt_flags |= OP_NET; 15771558Srgrimes } else if (!strcmp(cpopt, "alldirs")) { 15781558Srgrimes opt_flags |= OP_ALLDIRS; 157927447Sdfr } else if (!strcmp(cpopt, "public")) { 158027447Sdfr *exflagsp |= MNT_EXPUBLIC; 158127447Sdfr } else if (!strcmp(cpopt, "webnfs")) { 158227447Sdfr *exflagsp |= (MNT_EXPUBLIC|MNT_EXRDONLY|MNT_EXPORTANON); 158327447Sdfr opt_flags |= OP_MAPALL; 158427447Sdfr } else if (cpoptarg && !strcmp(cpopt, "index")) { 158527447Sdfr ep->ex_indexfile = strdup(cpoptarg); 1586100336Sjoerg } else if (!strcmp(cpopt, "quiet")) { 1587100336Sjoerg opt_flags |= OP_QUIET; 15881558Srgrimes } else { 158937663Scharnier syslog(LOG_ERR, "bad opt %s", cpopt); 15901558Srgrimes return (1); 15911558Srgrimes } 15921558Srgrimes if (usedarg >= 0) { 15931558Srgrimes *endcp = savedc2; 15941558Srgrimes **endcpp = savedc; 15951558Srgrimes if (usedarg > 0) { 15961558Srgrimes *cpp = cp; 15971558Srgrimes *endcpp = endcp; 15981558Srgrimes } 15991558Srgrimes return (0); 16001558Srgrimes } 16011558Srgrimes cpopt = cpoptend; 16021558Srgrimes } 16031558Srgrimes **endcpp = savedc; 16041558Srgrimes return (0); 16051558Srgrimes} 16061558Srgrimes 16071558Srgrimes/* 16081558Srgrimes * Translate a character string to the corresponding list of network 16091558Srgrimes * addresses for a hostname. 16101558Srgrimes */ 16111558Srgrimesint 16127401Swpaulget_host(cp, grp, tgrp) 16131558Srgrimes char *cp; 16141558Srgrimes struct grouplist *grp; 16157401Swpaul struct grouplist *tgrp; 16161558Srgrimes{ 16177401Swpaul struct grouplist *checkgrp; 161875635Siedowse struct addrinfo *ai, *tai, hints; 161974462Salfred int ecode; 162074462Salfred char host[NI_MAXHOST]; 16211558Srgrimes 162274462Salfred if (grp->gr_type != GT_NULL) { 162374462Salfred syslog(LOG_ERR, "Bad netgroup type for ip host %s", cp); 16241558Srgrimes return (1); 16251558Srgrimes } 162674462Salfred memset(&hints, 0, sizeof hints); 162774462Salfred hints.ai_flags = AI_CANONNAME; 162874462Salfred hints.ai_protocol = IPPROTO_UDP; 162974462Salfred ecode = getaddrinfo(cp, NULL, &hints, &ai); 163074462Salfred if (ecode != 0) { 163175635Siedowse syslog(LOG_ERR,"can't get address info for host %s", cp); 163274462Salfred return 1; 163374462Salfred } 163474462Salfred grp->gr_ptr.gt_addrinfo = ai; 163574462Salfred while (ai != NULL) { 163674462Salfred if (ai->ai_canonname == NULL) { 163774462Salfred if (getnameinfo(ai->ai_addr, ai->ai_addrlen, host, 163874462Salfred sizeof host, NULL, 0, ninumeric) != 0) 163974462Salfred strlcpy(host, "?", sizeof(host)); 164074462Salfred ai->ai_canonname = strdup(host); 164174462Salfred ai->ai_flags |= AI_CANONNAME; 164275641Siedowse } 164374462Salfred if (debug) 164475635Siedowse fprintf(stderr, "got host %s\n", ai->ai_canonname); 164575635Siedowse /* 164675635Siedowse * Sanity check: make sure we don't already have an entry 164775635Siedowse * for this host in the grouplist. 164875635Siedowse */ 164975635Siedowse for (checkgrp = tgrp; checkgrp != NULL; 165075635Siedowse checkgrp = checkgrp->gr_next) { 165175635Siedowse if (checkgrp->gr_type != GT_HOST) 165275635Siedowse continue; 165375635Siedowse for (tai = checkgrp->gr_ptr.gt_addrinfo; tai != NULL; 165475635Siedowse tai = tai->ai_next) { 165575801Siedowse if (sacmp(tai->ai_addr, ai->ai_addr, NULL) != 0) 165675635Siedowse continue; 165775635Siedowse if (debug) 165875635Siedowse fprintf(stderr, 165975635Siedowse "ignoring duplicate host %s\n", 166075635Siedowse ai->ai_canonname); 166175635Siedowse grp->gr_type = GT_IGNORE; 166275635Siedowse return (0); 166375635Siedowse } 166475635Siedowse } 166574462Salfred ai = ai->ai_next; 16661558Srgrimes } 166775635Siedowse grp->gr_type = GT_HOST; 16681558Srgrimes return (0); 16691558Srgrimes} 16701558Srgrimes 16711558Srgrimes/* 16721558Srgrimes * Free up an exports list component 16731558Srgrimes */ 16741558Srgrimesvoid 16751558Srgrimesfree_exp(ep) 16761558Srgrimes struct exportlist *ep; 16771558Srgrimes{ 16781558Srgrimes 16791558Srgrimes if (ep->ex_defdir) { 16801558Srgrimes free_host(ep->ex_defdir->dp_hosts); 16811558Srgrimes free((caddr_t)ep->ex_defdir); 16821558Srgrimes } 16831558Srgrimes if (ep->ex_fsdir) 16841558Srgrimes free(ep->ex_fsdir); 168527447Sdfr if (ep->ex_indexfile) 168627447Sdfr free(ep->ex_indexfile); 16871558Srgrimes free_dir(ep->ex_dirl); 16881558Srgrimes free((caddr_t)ep); 16891558Srgrimes} 16901558Srgrimes 16911558Srgrimes/* 16921558Srgrimes * Free hosts. 16931558Srgrimes */ 16941558Srgrimesvoid 16951558Srgrimesfree_host(hp) 16961558Srgrimes struct hostlist *hp; 16971558Srgrimes{ 16981558Srgrimes struct hostlist *hp2; 16991558Srgrimes 17001558Srgrimes while (hp) { 17011558Srgrimes hp2 = hp; 17021558Srgrimes hp = hp->ht_next; 17031558Srgrimes free((caddr_t)hp2); 17041558Srgrimes } 17051558Srgrimes} 17061558Srgrimes 17071558Srgrimesstruct hostlist * 17081558Srgrimesget_ht() 17091558Srgrimes{ 17101558Srgrimes struct hostlist *hp; 17111558Srgrimes 17121558Srgrimes hp = (struct hostlist *)malloc(sizeof (struct hostlist)); 17131558Srgrimes if (hp == (struct hostlist *)NULL) 17141558Srgrimes out_of_mem(); 17151558Srgrimes hp->ht_next = (struct hostlist *)NULL; 17169336Sdfr hp->ht_flag = 0; 17171558Srgrimes return (hp); 17181558Srgrimes} 17191558Srgrimes 17201558Srgrimes/* 17211558Srgrimes * Out of memory, fatal 17221558Srgrimes */ 17231558Srgrimesvoid 17241558Srgrimesout_of_mem() 17251558Srgrimes{ 17261558Srgrimes 172737663Scharnier syslog(LOG_ERR, "out of memory"); 17281558Srgrimes exit(2); 17291558Srgrimes} 17301558Srgrimes 17311558Srgrimes/* 17321558Srgrimes * Do the mount syscall with the update flag to push the export info into 17331558Srgrimes * the kernel. 17341558Srgrimes */ 17351558Srgrimesint 17361558Srgrimesdo_mount(ep, grp, exflags, anoncrp, dirp, dirplen, fsb) 17371558Srgrimes struct exportlist *ep; 17381558Srgrimes struct grouplist *grp; 17391558Srgrimes int exflags; 174072650Sgreen struct xucred *anoncrp; 17411558Srgrimes char *dirp; 17421558Srgrimes int dirplen; 17431558Srgrimes struct statfs *fsb; 17441558Srgrimes{ 174575841Siedowse struct statfs fsb1; 174674462Salfred struct addrinfo *ai; 174775801Siedowse struct export_args *eap; 174874462Salfred char *cp = NULL; 17491558Srgrimes int done; 17501558Srgrimes char savedc = '\0'; 17511558Srgrimes union { 17521558Srgrimes struct ufs_args ua; 17531558Srgrimes struct iso_args ia; 17549336Sdfr struct msdosfs_args da; 175554093Ssemenu struct ntfs_args na; 17561558Srgrimes } args; 17571558Srgrimes 175875801Siedowse bzero(&args, sizeof args); 175975801Siedowse /* XXX, we assume that all xx_args look like ufs_args. */ 17601558Srgrimes args.ua.fspec = 0; 176175801Siedowse eap = &args.ua.export; 176275801Siedowse 176375801Siedowse eap->ex_flags = exflags; 176475801Siedowse eap->ex_anon = *anoncrp; 176575801Siedowse eap->ex_indexfile = ep->ex_indexfile; 176675641Siedowse if (grp->gr_type == GT_HOST) 176774462Salfred ai = grp->gr_ptr.gt_addrinfo; 176875641Siedowse else 176975641Siedowse ai = NULL; 17701558Srgrimes done = FALSE; 17711558Srgrimes while (!done) { 17721558Srgrimes switch (grp->gr_type) { 17731558Srgrimes case GT_HOST: 177475641Siedowse if (ai->ai_addr->sa_family == AF_INET6 && have_v6 == 0) 177574462Salfred goto skip; 177675801Siedowse eap->ex_addr = ai->ai_addr; 177775801Siedowse eap->ex_addrlen = ai->ai_addrlen; 177875801Siedowse eap->ex_masklen = 0; 17791558Srgrimes break; 17801558Srgrimes case GT_NET: 178175801Siedowse if (grp->gr_ptr.gt_net.nt_net.ss_family == AF_INET6 && 178274462Salfred have_v6 == 0) 178374462Salfred goto skip; 178475801Siedowse eap->ex_addr = 178575801Siedowse (struct sockaddr *)&grp->gr_ptr.gt_net.nt_net; 178675801Siedowse eap->ex_addrlen = args.ua.export.ex_addr->sa_len; 178775801Siedowse eap->ex_mask = 178875801Siedowse (struct sockaddr *)&grp->gr_ptr.gt_net.nt_mask; 178975801Siedowse eap->ex_masklen = args.ua.export.ex_mask->sa_len; 17901558Srgrimes break; 179175641Siedowse case GT_DEFAULT: 179275801Siedowse eap->ex_addr = NULL; 179375801Siedowse eap->ex_addrlen = 0; 179475801Siedowse eap->ex_mask = NULL; 179575801Siedowse eap->ex_masklen = 0; 179675641Siedowse break; 17977401Swpaul case GT_IGNORE: 17987401Swpaul return(0); 17997401Swpaul break; 18001558Srgrimes default: 180137663Scharnier syslog(LOG_ERR, "bad grouptype"); 18021558Srgrimes if (cp) 18031558Srgrimes *cp = savedc; 18041558Srgrimes return (1); 18051558Srgrimes }; 18061558Srgrimes 18071558Srgrimes /* 18081558Srgrimes * XXX: 18091558Srgrimes * Maybe I should just use the fsb->f_mntonname path instead 18101558Srgrimes * of looping back up the dirp to the mount point?? 18111558Srgrimes * Also, needs to know how to export all types of local 181296707Strhodes * exportable filesystems and not just "ufs". 18131558Srgrimes */ 18149336Sdfr while (mount(fsb->f_fstypename, dirp, 181574462Salfred fsb->f_flags | MNT_UPDATE, (caddr_t)&args) < 0) { 18161558Srgrimes if (cp) 18171558Srgrimes *cp-- = savedc; 18181558Srgrimes else 18191558Srgrimes cp = dirp + dirplen - 1; 1820100336Sjoerg if (opt_flags & OP_QUIET) 1821100336Sjoerg return (1); 18221558Srgrimes if (errno == EPERM) { 182375635Siedowse if (debug) 182475635Siedowse warnx("can't change attributes for %s", 182575635Siedowse dirp); 18261558Srgrimes syslog(LOG_ERR, 182737663Scharnier "can't change attributes for %s", dirp); 18281558Srgrimes return (1); 18291558Srgrimes } 18301558Srgrimes if (opt_flags & OP_ALLDIRS) { 1831100336Sjoerg if (errno == EINVAL) 1832100336Sjoerg syslog(LOG_ERR, 1833100336Sjoerg "-alldirs requested but %s is not a filesystem mountpoint", 1834100336Sjoerg dirp); 1835100336Sjoerg else 1836100336Sjoerg syslog(LOG_ERR, 1837100336Sjoerg "could not remount %s: %m", 1838100336Sjoerg dirp); 18391558Srgrimes return (1); 18401558Srgrimes } 18411558Srgrimes /* back up over the last component */ 18421558Srgrimes while (*cp == '/' && cp > dirp) 18431558Srgrimes cp--; 18441558Srgrimes while (*(cp - 1) != '/' && cp > dirp) 18451558Srgrimes cp--; 18461558Srgrimes if (cp == dirp) { 18471558Srgrimes if (debug) 184837663Scharnier warnx("mnt unsucc"); 184937663Scharnier syslog(LOG_ERR, "can't export %s", dirp); 18501558Srgrimes return (1); 18511558Srgrimes } 18521558Srgrimes savedc = *cp; 18531558Srgrimes *cp = '\0'; 185475841Siedowse /* Check that we're still on the same filesystem. */ 185575841Siedowse if (statfs(dirp, &fsb1) != 0 || bcmp(&fsb1.f_fsid, 185675841Siedowse &fsb->f_fsid, sizeof(fsb1.f_fsid)) != 0) { 185775841Siedowse *cp = savedc; 185875841Siedowse syslog(LOG_ERR, "can't export %s", dirp); 185975841Siedowse return (1); 186075841Siedowse } 18611558Srgrimes } 186274462Salfredskip: 186375641Siedowse if (ai != NULL) 186474462Salfred ai = ai->ai_next; 186575641Siedowse if (ai == NULL) 18661558Srgrimes done = TRUE; 18671558Srgrimes } 18681558Srgrimes if (cp) 18691558Srgrimes *cp = savedc; 18701558Srgrimes return (0); 18711558Srgrimes} 18721558Srgrimes 18731558Srgrimes/* 18741558Srgrimes * Translate a net address. 187575801Siedowse * 187675801Siedowse * If `maskflg' is nonzero, then `cp' is a netmask, not a network address. 18771558Srgrimes */ 18781558Srgrimesint 18791558Srgrimesget_net(cp, net, maskflg) 18801558Srgrimes char *cp; 18811558Srgrimes struct netmsk *net; 18821558Srgrimes int maskflg; 18831558Srgrimes{ 188475861Siedowse struct netent *np = NULL; 188574462Salfred char *name, *p, *prefp; 188675801Siedowse struct sockaddr_in sin; 188775861Siedowse struct sockaddr *sa = NULL; 188874462Salfred struct addrinfo hints, *ai = NULL; 188974462Salfred char netname[NI_MAXHOST]; 189074462Salfred long preflen; 18911558Srgrimes 189275635Siedowse p = prefp = NULL; 189374462Salfred if ((opt_flags & OP_MASKLEN) && !maskflg) { 189474462Salfred p = strchr(cp, '/'); 189574462Salfred *p = '\0'; 189674462Salfred prefp = p + 1; 189774462Salfred } 189874462Salfred 189975861Siedowse /* 190075861Siedowse * Check for a numeric address first. We wish to avoid 190175861Siedowse * possible DNS lookups in getnetbyname(). 190275861Siedowse */ 190375861Siedowse if (isxdigit(*cp) || *cp == ':') { 190474462Salfred memset(&hints, 0, sizeof hints); 190575801Siedowse /* Ensure the mask and the network have the same family. */ 190675801Siedowse if (maskflg && (opt_flags & OP_NET)) 190775801Siedowse hints.ai_family = net->nt_net.ss_family; 190875801Siedowse else if (!maskflg && (opt_flags & OP_HAVEMASK)) 190975801Siedowse hints.ai_family = net->nt_mask.ss_family; 191075801Siedowse else 191175801Siedowse hints.ai_family = AF_UNSPEC; 191274462Salfred hints.ai_flags = AI_NUMERICHOST; 191375861Siedowse if (getaddrinfo(cp, NULL, &hints, &ai) == 0) 191475861Siedowse sa = ai->ai_addr; 191575861Siedowse if (sa != NULL && ai->ai_family == AF_INET) { 191674462Salfred /* 191775801Siedowse * The address in `cp' is really a network address, so 191875801Siedowse * use inet_network() to re-interpret this correctly. 191975801Siedowse * e.g. "127.1" means 127.1.0.0, not 127.0.0.1. 192074462Salfred */ 192175801Siedowse bzero(&sin, sizeof sin); 192274462Salfred sin.sin_family = AF_INET; 192374462Salfred sin.sin_len = sizeof sin; 192475801Siedowse sin.sin_addr = inet_makeaddr(inet_network(cp), 0); 192574462Salfred if (debug) 192675801Siedowse fprintf(stderr, "get_net: v4 addr %s\n", 192775801Siedowse inet_ntoa(sin.sin_addr)); 192874462Salfred sa = (struct sockaddr *)&sin; 192975861Siedowse } 193075861Siedowse } 193175861Siedowse if (sa == NULL && (np = getnetbyname(cp)) != NULL) { 193275861Siedowse bzero(&sin, sizeof sin); 193375861Siedowse sin.sin_family = AF_INET; 193475861Siedowse sin.sin_len = sizeof sin; 193575861Siedowse sin.sin_addr = inet_makeaddr(np->n_net, 0); 193675861Siedowse sa = (struct sockaddr *)&sin; 193775861Siedowse } 193875861Siedowse if (sa == NULL) 193974462Salfred goto fail; 194025318Spst 194175801Siedowse if (maskflg) { 194275801Siedowse /* The specified sockaddr is a mask. */ 194375801Siedowse if (checkmask(sa) != 0) 194475801Siedowse goto fail; 194575801Siedowse bcopy(sa, &net->nt_mask, sa->sa_len); 194675801Siedowse opt_flags |= OP_HAVEMASK; 194775801Siedowse } else { 194875801Siedowse /* The specified sockaddr is a network address. */ 194975801Siedowse bcopy(sa, &net->nt_net, sa->sa_len); 195074462Salfred 195175801Siedowse /* Get a network name for the export list. */ 195275801Siedowse if (np) { 195375801Siedowse name = np->n_name; 195475801Siedowse } else if (getnameinfo(sa, sa->sa_len, netname, sizeof netname, 195575801Siedowse NULL, 0, ninumeric) == 0) { 195675801Siedowse name = netname; 195775801Siedowse } else { 195875801Siedowse goto fail; 195975801Siedowse } 196075801Siedowse if ((net->nt_name = strdup(name)) == NULL) 196175801Siedowse out_of_mem(); 196275801Siedowse 196375801Siedowse /* 196475801Siedowse * Extract a mask from either a "/<masklen>" suffix, or 196575801Siedowse * from the class of an IPv4 address. 196675801Siedowse */ 196774462Salfred if (opt_flags & OP_MASKLEN) { 196874462Salfred preflen = strtol(prefp, NULL, 10); 196975801Siedowse if (preflen < 0L || preflen == LONG_MAX) 197074462Salfred goto fail; 197175801Siedowse bcopy(sa, &net->nt_mask, sa->sa_len); 197275801Siedowse if (makemask(&net->nt_mask, (int)preflen) != 0) 197375801Siedowse goto fail; 197475801Siedowse opt_flags |= OP_HAVEMASK; 197574462Salfred *p = '/'; 197675801Siedowse } else if (sa->sa_family == AF_INET && 197775801Siedowse (opt_flags & OP_MASK) == 0) { 197875801Siedowse in_addr_t addr; 197974462Salfred 198075801Siedowse addr = ((struct sockaddr_in *)sa)->sin_addr.s_addr; 198175801Siedowse if (IN_CLASSA(addr)) 198275801Siedowse preflen = 8; 198375801Siedowse else if (IN_CLASSB(addr)) 198475801Siedowse preflen = 16; 198575801Siedowse else if (IN_CLASSC(addr)) 198675801Siedowse preflen = 24; 198775801Siedowse else if (IN_CLASSD(addr)) 198875801Siedowse preflen = 28; 198975801Siedowse else 199075801Siedowse preflen = 32; /* XXX */ 199175801Siedowse 199275801Siedowse bcopy(sa, &net->nt_mask, sa->sa_len); 199375801Siedowse makemask(&net->nt_mask, (int)preflen); 199475801Siedowse opt_flags |= OP_HAVEMASK; 199574462Salfred } 199674462Salfred } 199774462Salfred 199874462Salfred if (ai) 199974462Salfred freeaddrinfo(ai); 200074462Salfred return 0; 200174462Salfred 200274462Salfredfail: 200374462Salfred if (ai) 200474462Salfred freeaddrinfo(ai); 200574462Salfred return 1; 20061558Srgrimes} 20071558Srgrimes 20081558Srgrimes/* 20091558Srgrimes * Parse out the next white space separated field 20101558Srgrimes */ 20111558Srgrimesvoid 20121558Srgrimesnextfield(cp, endcp) 20131558Srgrimes char **cp; 20141558Srgrimes char **endcp; 20151558Srgrimes{ 20161558Srgrimes char *p; 20171558Srgrimes 20181558Srgrimes p = *cp; 20191558Srgrimes while (*p == ' ' || *p == '\t') 20201558Srgrimes p++; 20211558Srgrimes if (*p == '\n' || *p == '\0') 20221558Srgrimes *cp = *endcp = p; 20231558Srgrimes else { 20241558Srgrimes *cp = p++; 20251558Srgrimes while (*p != ' ' && *p != '\t' && *p != '\n' && *p != '\0') 20261558Srgrimes p++; 20271558Srgrimes *endcp = p; 20281558Srgrimes } 20291558Srgrimes} 20301558Srgrimes 20311558Srgrimes/* 20321558Srgrimes * Get an exports file line. Skip over blank lines and handle line 20331558Srgrimes * continuations. 20341558Srgrimes */ 20351558Srgrimesint 20361558Srgrimesget_line() 20371558Srgrimes{ 20381558Srgrimes char *p, *cp; 203996622Siedowse size_t len; 20401558Srgrimes int totlen, cont_line; 20411558Srgrimes 20421558Srgrimes /* 20431558Srgrimes * Loop around ignoring blank lines and getting all continuation lines. 20441558Srgrimes */ 20451558Srgrimes p = line; 20461558Srgrimes totlen = 0; 20471558Srgrimes do { 204896622Siedowse if ((p = fgetln(exp_file, &len)) == NULL) 20491558Srgrimes return (0); 20501558Srgrimes cp = p + len - 1; 20511558Srgrimes cont_line = 0; 20521558Srgrimes while (cp >= p && 20531558Srgrimes (*cp == ' ' || *cp == '\t' || *cp == '\n' || *cp == '\\')) { 20541558Srgrimes if (*cp == '\\') 20551558Srgrimes cont_line = 1; 20561558Srgrimes cp--; 20571558Srgrimes len--; 20581558Srgrimes } 205979117Sdd if (cont_line) { 206079117Sdd *++cp = ' '; 206179117Sdd len++; 206279117Sdd } 206396622Siedowse if (linesize < len + totlen + 1) { 206496622Siedowse linesize = len + totlen + 1; 206596622Siedowse line = realloc(line, linesize); 206696622Siedowse if (line == NULL) 206796622Siedowse out_of_mem(); 20681558Srgrimes } 206996622Siedowse memcpy(line + totlen, p, len); 207096622Siedowse totlen += len; 207196622Siedowse line[totlen] = '\0'; 20721558Srgrimes } while (totlen == 0 || cont_line); 20731558Srgrimes return (1); 20741558Srgrimes} 20751558Srgrimes 20761558Srgrimes/* 20771558Srgrimes * Parse a description of a credential. 20781558Srgrimes */ 20791558Srgrimesvoid 20801558Srgrimesparsecred(namelist, cr) 20811558Srgrimes char *namelist; 208272650Sgreen struct xucred *cr; 20831558Srgrimes{ 20841558Srgrimes char *name; 20851558Srgrimes int cnt; 20861558Srgrimes char *names; 20871558Srgrimes struct passwd *pw; 20881558Srgrimes struct group *gr; 20891558Srgrimes int ngroups, groups[NGROUPS + 1]; 20901558Srgrimes 209191354Sdd cr->cr_version = XUCRED_VERSION; 20921558Srgrimes /* 209337663Scharnier * Set up the unprivileged user. 20941558Srgrimes */ 20951558Srgrimes cr->cr_uid = -2; 20961558Srgrimes cr->cr_groups[0] = -2; 20971558Srgrimes cr->cr_ngroups = 1; 20981558Srgrimes /* 20991558Srgrimes * Get the user's password table entry. 21001558Srgrimes */ 21011558Srgrimes names = strsep(&namelist, " \t\n"); 21021558Srgrimes name = strsep(&names, ":"); 21031558Srgrimes if (isdigit(*name) || *name == '-') 21041558Srgrimes pw = getpwuid(atoi(name)); 21051558Srgrimes else 21061558Srgrimes pw = getpwnam(name); 21071558Srgrimes /* 21081558Srgrimes * Credentials specified as those of a user. 21091558Srgrimes */ 21101558Srgrimes if (names == NULL) { 21111558Srgrimes if (pw == NULL) { 211237663Scharnier syslog(LOG_ERR, "unknown user: %s", name); 21131558Srgrimes return; 21141558Srgrimes } 21151558Srgrimes cr->cr_uid = pw->pw_uid; 21161558Srgrimes ngroups = NGROUPS + 1; 21171558Srgrimes if (getgrouplist(pw->pw_name, pw->pw_gid, groups, &ngroups)) 211837663Scharnier syslog(LOG_ERR, "too many groups"); 21191558Srgrimes /* 21201558Srgrimes * Convert from int's to gid_t's and compress out duplicate 21211558Srgrimes */ 21221558Srgrimes cr->cr_ngroups = ngroups - 1; 21231558Srgrimes cr->cr_groups[0] = groups[0]; 21241558Srgrimes for (cnt = 2; cnt < ngroups; cnt++) 21251558Srgrimes cr->cr_groups[cnt - 1] = groups[cnt]; 21261558Srgrimes return; 21271558Srgrimes } 21281558Srgrimes /* 21291558Srgrimes * Explicit credential specified as a colon separated list: 21301558Srgrimes * uid:gid:gid:... 21311558Srgrimes */ 21321558Srgrimes if (pw != NULL) 21331558Srgrimes cr->cr_uid = pw->pw_uid; 21341558Srgrimes else if (isdigit(*name) || *name == '-') 21351558Srgrimes cr->cr_uid = atoi(name); 21361558Srgrimes else { 213737663Scharnier syslog(LOG_ERR, "unknown user: %s", name); 21381558Srgrimes return; 21391558Srgrimes } 21401558Srgrimes cr->cr_ngroups = 0; 21411558Srgrimes while (names != NULL && *names != '\0' && cr->cr_ngroups < NGROUPS) { 21421558Srgrimes name = strsep(&names, ":"); 21431558Srgrimes if (isdigit(*name) || *name == '-') { 21441558Srgrimes cr->cr_groups[cr->cr_ngroups++] = atoi(name); 21451558Srgrimes } else { 21461558Srgrimes if ((gr = getgrnam(name)) == NULL) { 214737663Scharnier syslog(LOG_ERR, "unknown group: %s", name); 21481558Srgrimes continue; 21491558Srgrimes } 21501558Srgrimes cr->cr_groups[cr->cr_ngroups++] = gr->gr_gid; 21511558Srgrimes } 21521558Srgrimes } 21531558Srgrimes if (names != NULL && *names != '\0' && cr->cr_ngroups == NGROUPS) 215437663Scharnier syslog(LOG_ERR, "too many groups"); 21551558Srgrimes} 21561558Srgrimes 21571558Srgrimes#define STRSIZ (RPCMNT_NAMELEN+RPCMNT_PATHLEN+50) 21581558Srgrimes/* 21591558Srgrimes * Routines that maintain the remote mounttab 21601558Srgrimes */ 21611558Srgrimesvoid 21621558Srgrimesget_mountlist() 21631558Srgrimes{ 21641558Srgrimes struct mountlist *mlp, **mlpp; 216523681Speter char *host, *dirp, *cp; 21661558Srgrimes char str[STRSIZ]; 21671558Srgrimes FILE *mlfile; 21681558Srgrimes 21691558Srgrimes if ((mlfile = fopen(_PATH_RMOUNTLIST, "r")) == NULL) { 217053117Sbillf if (errno == ENOENT) 217153117Sbillf return; 217253117Sbillf else { 217353117Sbillf syslog(LOG_ERR, "can't open %s", _PATH_RMOUNTLIST); 217453117Sbillf return; 217553117Sbillf } 21761558Srgrimes } 21771558Srgrimes mlpp = &mlhead; 21781558Srgrimes while (fgets(str, STRSIZ, mlfile) != NULL) { 217923681Speter cp = str; 218023681Speter host = strsep(&cp, " \t\n"); 218123681Speter dirp = strsep(&cp, " \t\n"); 218223681Speter if (host == NULL || dirp == NULL) 21831558Srgrimes continue; 21841558Srgrimes mlp = (struct mountlist *)malloc(sizeof (*mlp)); 218537663Scharnier if (mlp == (struct mountlist *)NULL) 218637663Scharnier out_of_mem(); 218723681Speter strncpy(mlp->ml_host, host, RPCMNT_NAMELEN); 218823681Speter mlp->ml_host[RPCMNT_NAMELEN] = '\0'; 218923681Speter strncpy(mlp->ml_dirp, dirp, RPCMNT_PATHLEN); 219023681Speter mlp->ml_dirp[RPCMNT_PATHLEN] = '\0'; 21911558Srgrimes mlp->ml_next = (struct mountlist *)NULL; 21921558Srgrimes *mlpp = mlp; 21931558Srgrimes mlpp = &mlp->ml_next; 21941558Srgrimes } 21951558Srgrimes fclose(mlfile); 21961558Srgrimes} 21971558Srgrimes 219875635Siedowsevoid 219975635Siedowsedel_mlist(char *hostp, char *dirp) 22001558Srgrimes{ 22011558Srgrimes struct mountlist *mlp, **mlpp; 22021558Srgrimes struct mountlist *mlp2; 22031558Srgrimes FILE *mlfile; 22041558Srgrimes int fnd = 0; 22051558Srgrimes 22061558Srgrimes mlpp = &mlhead; 22071558Srgrimes mlp = mlhead; 22081558Srgrimes while (mlp) { 22091558Srgrimes if (!strcmp(mlp->ml_host, hostp) && 22101558Srgrimes (!dirp || !strcmp(mlp->ml_dirp, dirp))) { 22111558Srgrimes fnd = 1; 22121558Srgrimes mlp2 = mlp; 22131558Srgrimes *mlpp = mlp = mlp->ml_next; 22141558Srgrimes free((caddr_t)mlp2); 22151558Srgrimes } else { 22161558Srgrimes mlpp = &mlp->ml_next; 22171558Srgrimes mlp = mlp->ml_next; 22181558Srgrimes } 22191558Srgrimes } 22201558Srgrimes if (fnd) { 22211558Srgrimes if ((mlfile = fopen(_PATH_RMOUNTLIST, "w")) == NULL) { 222237663Scharnier syslog(LOG_ERR,"can't update %s", _PATH_RMOUNTLIST); 22231558Srgrimes return; 22241558Srgrimes } 22251558Srgrimes mlp = mlhead; 22261558Srgrimes while (mlp) { 22271558Srgrimes fprintf(mlfile, "%s %s\n", mlp->ml_host, mlp->ml_dirp); 22281558Srgrimes mlp = mlp->ml_next; 22291558Srgrimes } 22301558Srgrimes fclose(mlfile); 22311558Srgrimes } 22321558Srgrimes} 22331558Srgrimes 22341558Srgrimesvoid 22351558Srgrimesadd_mlist(hostp, dirp) 22361558Srgrimes char *hostp, *dirp; 22371558Srgrimes{ 22381558Srgrimes struct mountlist *mlp, **mlpp; 22391558Srgrimes FILE *mlfile; 22401558Srgrimes 22411558Srgrimes mlpp = &mlhead; 22421558Srgrimes mlp = mlhead; 22431558Srgrimes while (mlp) { 22441558Srgrimes if (!strcmp(mlp->ml_host, hostp) && !strcmp(mlp->ml_dirp, dirp)) 22451558Srgrimes return; 22461558Srgrimes mlpp = &mlp->ml_next; 22471558Srgrimes mlp = mlp->ml_next; 22481558Srgrimes } 22491558Srgrimes mlp = (struct mountlist *)malloc(sizeof (*mlp)); 225037663Scharnier if (mlp == (struct mountlist *)NULL) 225137663Scharnier out_of_mem(); 22521558Srgrimes strncpy(mlp->ml_host, hostp, RPCMNT_NAMELEN); 22531558Srgrimes mlp->ml_host[RPCMNT_NAMELEN] = '\0'; 22541558Srgrimes strncpy(mlp->ml_dirp, dirp, RPCMNT_PATHLEN); 22551558Srgrimes mlp->ml_dirp[RPCMNT_PATHLEN] = '\0'; 22561558Srgrimes mlp->ml_next = (struct mountlist *)NULL; 22571558Srgrimes *mlpp = mlp; 22581558Srgrimes if ((mlfile = fopen(_PATH_RMOUNTLIST, "a")) == NULL) { 225937663Scharnier syslog(LOG_ERR, "can't update %s", _PATH_RMOUNTLIST); 22601558Srgrimes return; 22611558Srgrimes } 22621558Srgrimes fprintf(mlfile, "%s %s\n", mlp->ml_host, mlp->ml_dirp); 22631558Srgrimes fclose(mlfile); 22641558Srgrimes} 22651558Srgrimes 22661558Srgrimes/* 22671558Srgrimes * Free up a group list. 22681558Srgrimes */ 22691558Srgrimesvoid 22701558Srgrimesfree_grp(grp) 22711558Srgrimes struct grouplist *grp; 22721558Srgrimes{ 22731558Srgrimes if (grp->gr_type == GT_HOST) { 227474462Salfred if (grp->gr_ptr.gt_addrinfo != NULL) 227574462Salfred freeaddrinfo(grp->gr_ptr.gt_addrinfo); 22761558Srgrimes } else if (grp->gr_type == GT_NET) { 22771558Srgrimes if (grp->gr_ptr.gt_net.nt_name) 22781558Srgrimes free(grp->gr_ptr.gt_net.nt_name); 22791558Srgrimes } 22801558Srgrimes free((caddr_t)grp); 22811558Srgrimes} 22821558Srgrimes 22831558Srgrimes#ifdef DEBUG 22841558Srgrimesvoid 22851558SrgrimesSYSLOG(int pri, const char *fmt, ...) 22861558Srgrimes{ 22871558Srgrimes va_list ap; 22881558Srgrimes 22891558Srgrimes va_start(ap, fmt); 22901558Srgrimes vfprintf(stderr, fmt, ap); 22911558Srgrimes va_end(ap); 22921558Srgrimes} 22931558Srgrimes#endif /* DEBUG */ 22941558Srgrimes 22951558Srgrimes/* 22961558Srgrimes * Check options for consistency. 22971558Srgrimes */ 22981558Srgrimesint 22991558Srgrimescheck_options(dp) 23001558Srgrimes struct dirlist *dp; 23011558Srgrimes{ 23021558Srgrimes 23031558Srgrimes if (dp == (struct dirlist *)NULL) 23041558Srgrimes return (1); 230583653Speter if ((opt_flags & (OP_MAPROOT | OP_MAPALL)) == (OP_MAPROOT | OP_MAPALL)) { 230683653Speter syslog(LOG_ERR, "-mapall and -maproot mutually exclusive"); 23071558Srgrimes return (1); 23081558Srgrimes } 23091558Srgrimes if ((opt_flags & OP_MASK) && (opt_flags & OP_NET) == 0) { 231075801Siedowse syslog(LOG_ERR, "-mask requires -network"); 231175801Siedowse return (1); 23121558Srgrimes } 231375801Siedowse if ((opt_flags & OP_NET) && (opt_flags & OP_HAVEMASK) == 0) { 231475801Siedowse syslog(LOG_ERR, "-network requires mask specification"); 231575801Siedowse return (1); 231675801Siedowse } 231775801Siedowse if ((opt_flags & OP_MASK) && (opt_flags & OP_MASKLEN)) { 231875801Siedowse syslog(LOG_ERR, "-mask and /masklen are mutually exclusive"); 231975801Siedowse return (1); 232075801Siedowse } 23211558Srgrimes if ((opt_flags & OP_ALLDIRS) && dp->dp_left) { 232245927Salex syslog(LOG_ERR, "-alldirs has multiple directories"); 23231558Srgrimes return (1); 23241558Srgrimes } 23251558Srgrimes return (0); 23261558Srgrimes} 23271558Srgrimes 23281558Srgrimes/* 23291558Srgrimes * Check an absolute directory path for any symbolic links. Return true 23301558Srgrimes */ 23311558Srgrimesint 23321558Srgrimescheck_dirpath(dirp) 23331558Srgrimes char *dirp; 23341558Srgrimes{ 23351558Srgrimes char *cp; 23361558Srgrimes int ret = 1; 23371558Srgrimes struct stat sb; 23381558Srgrimes 23391558Srgrimes cp = dirp + 1; 23401558Srgrimes while (*cp && ret) { 23411558Srgrimes if (*cp == '/') { 23421558Srgrimes *cp = '\0'; 23439336Sdfr if (lstat(dirp, &sb) < 0 || !S_ISDIR(sb.st_mode)) 23441558Srgrimes ret = 0; 23451558Srgrimes *cp = '/'; 23461558Srgrimes } 23471558Srgrimes cp++; 23481558Srgrimes } 23499336Sdfr if (lstat(dirp, &sb) < 0 || !S_ISDIR(sb.st_mode)) 23501558Srgrimes ret = 0; 23511558Srgrimes return (ret); 23521558Srgrimes} 23539336Sdfr 235475801Siedowse/* 235575801Siedowse * Make a netmask according to the specified prefix length. The ss_family 235675801Siedowse * and other non-address fields must be initialised before calling this. 235775801Siedowse */ 235875801Siedowseint 235975801Siedowsemakemask(struct sockaddr_storage *ssp, int bitlen) 236074462Salfred{ 236175801Siedowse u_char *p; 236275801Siedowse int bits, i, len; 236374462Salfred 236475801Siedowse if ((p = sa_rawaddr((struct sockaddr *)ssp, &len)) == NULL) 236575801Siedowse return (-1); 2366103949Smike if (bitlen > len * CHAR_BIT) 236775801Siedowse return (-1); 236874462Salfred 236975801Siedowse for (i = 0; i < len; i++) { 2370103949Smike bits = (bitlen > CHAR_BIT) ? CHAR_BIT : bitlen; 237175801Siedowse *p++ = (1 << bits) - 1; 237275801Siedowse bitlen -= bits; 237374462Salfred } 237475801Siedowse return 0; 237574462Salfred} 237674462Salfred 237775801Siedowse/* 237875801Siedowse * Check that the sockaddr is a valid netmask. Returns 0 if the mask 237975801Siedowse * is acceptable (i.e. of the form 1...10....0). 238075801Siedowse */ 238175801Siedowseint 238275801Siedowsecheckmask(struct sockaddr *sa) 238374462Salfred{ 238475801Siedowse u_char *mask; 238575801Siedowse int i, len; 238674462Salfred 238775801Siedowse if ((mask = sa_rawaddr(sa, &len)) == NULL) 238875801Siedowse return (-1); 238975801Siedowse 239075801Siedowse for (i = 0; i < len; i++) 239175801Siedowse if (mask[i] != 0xff) 239275801Siedowse break; 239375801Siedowse if (i < len) { 239475801Siedowse if (~mask[i] & (u_char)(~mask[i] + 1)) 239575801Siedowse return (-1); 239675801Siedowse i++; 239774462Salfred } 239875801Siedowse for (; i < len; i++) 239975801Siedowse if (mask[i] != 0) 240075801Siedowse return (-1); 240175801Siedowse return (0); 240274462Salfred} 240374462Salfred 240475801Siedowse/* 240575801Siedowse * Compare two sockaddrs according to a specified mask. Return zero if 240675801Siedowse * `sa1' matches `sa2' when filtered by the netmask in `samask'. 240775801Siedowse * If samask is NULL, perform a full comparision. 240875801Siedowse */ 240975801Siedowseint 241075801Siedowsesacmp(struct sockaddr *sa1, struct sockaddr *sa2, struct sockaddr *samask) 241174462Salfred{ 241275801Siedowse unsigned char *p1, *p2, *mask; 241375801Siedowse int len, i; 241474462Salfred 241575801Siedowse if (sa1->sa_family != sa2->sa_family || 241675801Siedowse (p1 = sa_rawaddr(sa1, &len)) == NULL || 241775801Siedowse (p2 = sa_rawaddr(sa2, NULL)) == NULL) 241875801Siedowse return (1); 241975801Siedowse 242075801Siedowse switch (sa1->sa_family) { 242174462Salfred case AF_INET6: 242275801Siedowse if (((struct sockaddr_in6 *)sa1)->sin6_scope_id != 242375801Siedowse ((struct sockaddr_in6 *)sa2)->sin6_scope_id) 242475801Siedowse return (1); 242574462Salfred break; 242674462Salfred } 242774462Salfred 242875801Siedowse /* Simple binary comparison if no mask specified. */ 242975801Siedowse if (samask == NULL) 243075801Siedowse return (memcmp(p1, p2, len)); 243174462Salfred 243275801Siedowse /* Set up the mask, and do a mask-based comparison. */ 243375801Siedowse if (sa1->sa_family != samask->sa_family || 243475801Siedowse (mask = sa_rawaddr(samask, NULL)) == NULL) 243575801Siedowse return (1); 243674462Salfred 243775801Siedowse for (i = 0; i < len; i++) 243875801Siedowse if ((p1[i] & mask[i]) != (p2[i] & mask[i])) 243975801Siedowse return (1); 244075801Siedowse return (0); 244174462Salfred} 244274462Salfred 244375801Siedowse/* 244475801Siedowse * Return a pointer to the part of the sockaddr that contains the 244575801Siedowse * raw address, and set *nbytes to its length in bytes. Returns 244675801Siedowse * NULL if the address family is unknown. 244775801Siedowse */ 244875801Siedowsevoid * 244975801Siedowsesa_rawaddr(struct sockaddr *sa, int *nbytes) { 245075801Siedowse void *p; 245174462Salfred int len; 245274462Salfred 245375801Siedowse switch (sa->sa_family) { 245474462Salfred case AF_INET: 245575801Siedowse len = sizeof(((struct sockaddr_in *)sa)->sin_addr); 245675801Siedowse p = &((struct sockaddr_in *)sa)->sin_addr; 245774462Salfred break; 245874462Salfred case AF_INET6: 245975801Siedowse len = sizeof(((struct sockaddr_in6 *)sa)->sin6_addr); 246075801Siedowse p = &((struct sockaddr_in6 *)sa)->sin6_addr; 246174462Salfred break; 246274462Salfred default: 246375801Siedowse p = NULL; 246475801Siedowse len = 0; 246574462Salfred } 246674462Salfred 246775801Siedowse if (nbytes != NULL) 246875801Siedowse *nbytes = len; 246975801Siedowse return (p); 247074462Salfred} 247174462Salfred 247275754Siedowsevoid 247375754Siedowsehuphandler(int sig) 247475754Siedowse{ 247575754Siedowse got_sighup = 1; 247675754Siedowse} 247775754Siedowse 247874462Salfredvoid terminate(sig) 247974462Salfredint sig; 248074462Salfred{ 248174462Salfred close(mountdlockfd); 248274462Salfred unlink(MOUNTDLOCK); 248374792Salfred rpcb_unset(RPCPROG_MNT, RPCMNT_VER1, NULL); 248474792Salfred rpcb_unset(RPCPROG_MNT, RPCMNT_VER3, NULL); 248574462Salfred exit (0); 248674462Salfred} 2487