mountd.c revision 105267
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 43105267Scharnier#if 0 441558Srgrimes#ifndef lint 4537663Scharnierstatic char sccsid[] = "@(#)mountd.c 8.15 (Berkeley) 5/1/95"; 46105267Scharnier#endif /*not lint*/ 4737663Scharnier#endif 481558Srgrimes 49105267Scharnier#include <sys/cdefs.h> 50105267Scharnier__FBSDID("$FreeBSD: head/usr.sbin/mountd/mountd.c 105267 2002-10-16 16:04:50Z charnier $"); 51105267Scharnier 521558Srgrimes#include <sys/param.h> 531558Srgrimes#include <sys/mount.h> 5474462Salfred#include <sys/fcntl.h> 551558Srgrimes#include <sys/stat.h> 561558Srgrimes#include <sys/syslog.h> 5724330Sguido#include <sys/sysctl.h> 5896622Siedowse#include <sys/linker.h> 5996622Siedowse#include <sys/module.h> 601558Srgrimes 611558Srgrimes#include <rpc/rpc.h> 621558Srgrimes#include <rpc/pmap_clnt.h> 6374462Salfred#include <rpc/pmap_prot.h> 6474462Salfred#include <rpcsvc/mount.h> 651558Srgrimes#include <nfs/rpcv2.h> 669336Sdfr#include <nfs/nfsproto.h> 6783653Speter#include <nfsserver/nfs.h> 6823681Speter#include <ufs/ufs/ufsmount.h> 6977162Sru#include <fs/msdosfs/msdosfsmount.h> 7077223Sru#include <fs/ntfs/ntfsmount.h> 7123681Speter#include <isofs/cd9660/cd9660_mount.h> /* XXX need isofs in include */ 721558Srgrimes 731558Srgrimes#include <arpa/inet.h> 741558Srgrimes 751558Srgrimes#include <ctype.h> 7637663Scharnier#include <err.h> 771558Srgrimes#include <errno.h> 781558Srgrimes#include <grp.h> 79103949Smike#include <limits.h> 801558Srgrimes#include <netdb.h> 811558Srgrimes#include <pwd.h> 821558Srgrimes#include <signal.h> 831558Srgrimes#include <stdio.h> 841558Srgrimes#include <stdlib.h> 851558Srgrimes#include <string.h> 861558Srgrimes#include <unistd.h> 871558Srgrimes#include "pathnames.h" 881558Srgrimes 891558Srgrimes#ifdef DEBUG 901558Srgrimes#include <stdarg.h> 911558Srgrimes#endif 921558Srgrimes 9374462Salfred#ifndef MOUNTDLOCK 9474462Salfred#define MOUNTDLOCK "/var/run/mountd.lock" 9574462Salfred#endif 9674462Salfred 971558Srgrimes/* 981558Srgrimes * Structures for keeping the mount list and export list 991558Srgrimes */ 1001558Srgrimesstruct mountlist { 1011558Srgrimes struct mountlist *ml_next; 1021558Srgrimes char ml_host[RPCMNT_NAMELEN+1]; 1031558Srgrimes char ml_dirp[RPCMNT_PATHLEN+1]; 1041558Srgrimes}; 1051558Srgrimes 1061558Srgrimesstruct dirlist { 1071558Srgrimes struct dirlist *dp_left; 1081558Srgrimes struct dirlist *dp_right; 1091558Srgrimes int dp_flag; 1101558Srgrimes struct hostlist *dp_hosts; /* List of hosts this dir exported to */ 1111558Srgrimes char dp_dirp[1]; /* Actually malloc'd to size of dir */ 1121558Srgrimes}; 1131558Srgrimes/* dp_flag bits */ 1141558Srgrimes#define DP_DEFSET 0x1 1159336Sdfr#define DP_HOSTSET 0x2 1161558Srgrimes 1171558Srgrimesstruct exportlist { 1181558Srgrimes struct exportlist *ex_next; 1191558Srgrimes struct dirlist *ex_dirl; 1201558Srgrimes struct dirlist *ex_defdir; 1211558Srgrimes int ex_flag; 1221558Srgrimes fsid_t ex_fs; 1231558Srgrimes char *ex_fsdir; 12427447Sdfr char *ex_indexfile; 1251558Srgrimes}; 1261558Srgrimes/* ex_flag bits */ 1271558Srgrimes#define EX_LINKED 0x1 1281558Srgrimes 1291558Srgrimesstruct netmsk { 13074462Salfred struct sockaddr_storage nt_net; 13175801Siedowse struct sockaddr_storage nt_mask; 13242144Sdfr char *nt_name; 1331558Srgrimes}; 1341558Srgrimes 1351558Srgrimesunion grouptypes { 13674462Salfred struct addrinfo *gt_addrinfo; 1371558Srgrimes struct netmsk gt_net; 1381558Srgrimes}; 1391558Srgrimes 1401558Srgrimesstruct grouplist { 1411558Srgrimes int gr_type; 1421558Srgrimes union grouptypes gr_ptr; 1431558Srgrimes struct grouplist *gr_next; 1441558Srgrimes}; 1451558Srgrimes/* Group types */ 1461558Srgrimes#define GT_NULL 0x0 1471558Srgrimes#define GT_HOST 0x1 1481558Srgrimes#define GT_NET 0x2 14975641Siedowse#define GT_DEFAULT 0x3 1507401Swpaul#define GT_IGNORE 0x5 1511558Srgrimes 1521558Srgrimesstruct hostlist { 1539336Sdfr int ht_flag; /* Uses DP_xx bits */ 1541558Srgrimes struct grouplist *ht_grp; 1551558Srgrimes struct hostlist *ht_next; 1561558Srgrimes}; 1571558Srgrimes 1589336Sdfrstruct fhreturn { 1599336Sdfr int fhr_flag; 1609336Sdfr int fhr_vers; 1619336Sdfr nfsfh_t fhr_fh; 1629336Sdfr}; 1639336Sdfr 1641558Srgrimes/* Global defs */ 16592882Simpchar *add_expdir(struct dirlist **, char *, int); 16692882Simpvoid add_dlist(struct dirlist **, struct dirlist *, 16792882Simp struct grouplist *, int); 16892882Simpvoid add_mlist(char *, char *); 16992882Simpint check_dirpath(char *); 17092882Simpint check_options(struct dirlist *); 17175801Siedowseint checkmask(struct sockaddr *sa); 17292882Simpint chk_host(struct dirlist *, struct sockaddr *, int *, int *); 17375635Siedowsevoid del_mlist(char *hostp, char *dirp); 17492882Simpstruct dirlist *dirp_search(struct dirlist *, char *); 17592882Simpint do_mount(struct exportlist *, struct grouplist *, int, 17692882Simp struct xucred *, char *, int, struct statfs *); 17792882Simpint do_opt(char **, char **, struct exportlist *, struct grouplist *, 17892882Simp int *, int *, struct xucred *); 17992882Simpstruct exportlist *ex_search(fsid_t *); 18092882Simpstruct exportlist *get_exp(void); 18192882Simpvoid free_dir(struct dirlist *); 18292882Simpvoid free_exp(struct exportlist *); 18392882Simpvoid free_grp(struct grouplist *); 18492882Simpvoid free_host(struct hostlist *); 18592882Simpvoid get_exportlist(void); 18692882Simpint get_host(char *, struct grouplist *, struct grouplist *); 18792882Simpstruct hostlist *get_ht(void); 18892882Simpint get_line(void); 18992882Simpvoid get_mountlist(void); 19092882Simpint get_net(char *, struct netmsk *, int); 19192882Simpvoid getexp_err(struct exportlist *, struct grouplist *); 19292882Simpstruct grouplist *get_grp(void); 19392882Simpvoid hang_dirp(struct dirlist *, struct grouplist *, 19492882Simp struct exportlist *, int); 19575754Siedowsevoid huphandler(int sig); 19675801Siedowseint makemask(struct sockaddr_storage *ssp, int bitlen); 19792882Simpvoid mntsrv(struct svc_req *, SVCXPRT *); 19892882Simpvoid nextfield(char **, char **); 19992882Simpvoid out_of_mem(void); 20092882Simpvoid parsecred(char *, struct xucred *); 201100117Salfredint put_exlist(struct dirlist *, XDR *, struct dirlist *, int *, int); 20275801Siedowsevoid *sa_rawaddr(struct sockaddr *sa, int *nbytes); 20375801Siedowseint sacmp(struct sockaddr *sa1, struct sockaddr *sa2, 20475801Siedowse struct sockaddr *samask); 20592882Simpint scan_tree(struct dirlist *, struct sockaddr *); 20692882Simpstatic void usage(void); 20792882Simpint xdr_dir(XDR *, char *); 20892882Simpint xdr_explist(XDR *, caddr_t); 209100117Salfredint xdr_explist_brief(XDR *, caddr_t); 21092882Simpint xdr_fhs(XDR *, caddr_t); 21192882Simpint xdr_mlist(XDR *, caddr_t); 21292882Simpvoid terminate(int); 2131558Srgrimes 2141558Srgrimesstruct exportlist *exphead; 2151558Srgrimesstruct mountlist *mlhead; 2161558Srgrimesstruct grouplist *grphead; 2171558Srgrimeschar exname[MAXPATHLEN]; 21872650Sgreenstruct xucred def_anon = { 21991354Sdd XUCRED_VERSION, 22072650Sgreen (uid_t)-2, 2211558Srgrimes 1, 22272650Sgreen { (gid_t)-2 }, 22372650Sgreen NULL 2241558Srgrimes}; 22525087Sdfrint force_v2 = 0; 2269336Sdfrint resvport_only = 1; 2279336Sdfrint dir_only = 1; 22831705Sguidoint log = 0; 22975754Siedowseint got_sighup = 0; 23074462Salfred 2311558Srgrimesint opt_flags; 23274462Salfredstatic int have_v6 = 1; 23374462Salfred#ifdef NI_WITHSCOPEID 23474462Salfredstatic const int ninumeric = NI_NUMERICHOST | NI_WITHSCOPEID; 23574462Salfred#else 23674462Salfredstatic const int ninumeric = NI_NUMERICHOST; 23774462Salfred#endif 23874462Salfred 23974462Salfredint mountdlockfd; 24075801Siedowse/* Bits for opt_flags above */ 2411558Srgrimes#define OP_MAPROOT 0x01 2421558Srgrimes#define OP_MAPALL 0x02 24383653Speter/* 0x4 free */ 2441558Srgrimes#define OP_MASK 0x08 2451558Srgrimes#define OP_NET 0x10 2461558Srgrimes#define OP_ALLDIRS 0x40 24775801Siedowse#define OP_HAVEMASK 0x80 /* A mask was specified or inferred. */ 248100336Sjoerg#define OP_QUIET 0x100 24974462Salfred#define OP_MASKLEN 0x200 2501558Srgrimes 2511558Srgrimes#ifdef DEBUG 2521558Srgrimesint debug = 1; 25392882Simpvoid SYSLOG(int, const char *, ...) __printflike(2, 3); 2541558Srgrimes#define syslog SYSLOG 2551558Srgrimes#else 2561558Srgrimesint debug = 0; 2571558Srgrimes#endif 2581558Srgrimes 2591558Srgrimes/* 2601558Srgrimes * Mountd server for NFS mount protocol as described in: 2611558Srgrimes * NFS: Network File System Protocol Specification, RFC1094, Appendix A 2621558Srgrimes * The optional arguments are the exports file name 2631558Srgrimes * default: _PATH_EXPORTS 2641558Srgrimes * and "-n" to allow nonroot mount. 2651558Srgrimes */ 2661558Srgrimesint 2671558Srgrimesmain(argc, argv) 2681558Srgrimes int argc; 2691558Srgrimes char **argv; 2701558Srgrimes{ 27175754Siedowse fd_set readfds; 27274462Salfred SVCXPRT *udptransp, *tcptransp, *udp6transp, *tcp6transp; 27374462Salfred struct netconfig *udpconf, *tcpconf, *udp6conf, *tcp6conf; 27474462Salfred int udpsock, tcpsock, udp6sock, tcp6sock; 27574462Salfred int xcreated = 0, s; 27674462Salfred int one = 1; 27796622Siedowse int c; 2781558Srgrimes 27975635Siedowse udp6conf = tcp6conf = NULL; 28075635Siedowse udp6sock = tcp6sock = NULL; 28175635Siedowse 28274462Salfred /* Check that another mountd isn't already running. */ 28374462Salfred if ((mountdlockfd = (open(MOUNTDLOCK, O_RDONLY|O_CREAT, 0444))) == -1) 28474462Salfred err(1, "%s", MOUNTDLOCK); 28574462Salfred 28674462Salfred if(flock(mountdlockfd, LOCK_EX|LOCK_NB) == -1 && errno == EWOULDBLOCK) 287105267Scharnier errx(1, "another mountd is already running. Aborting"); 28874462Salfred s = socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP); 28974462Salfred if (s < 0) 29074462Salfred have_v6 = 0; 29174462Salfred else 29274462Salfred close(s); 29383687Speter if (modfind("nfsserver") < 0) { 29483687Speter /* Not present in kernel, try loading it */ 29583687Speter if (kldload("nfsserver") < 0 || modfind("nfsserver") < 0) 29683687Speter errx(1, "NFS server is not available or loadable"); 2972999Swollman } 2982999Swollman 29931665Sguido while ((c = getopt(argc, argv, "2dlnr")) != -1) 3001558Srgrimes switch (c) { 30125087Sdfr case '2': 30225087Sdfr force_v2 = 1; 30325087Sdfr break; 3049336Sdfr case 'n': 3059336Sdfr resvport_only = 0; 3069336Sdfr break; 3079336Sdfr case 'r': 3089336Sdfr dir_only = 0; 3099336Sdfr break; 3108688Sphk case 'd': 3118688Sphk debug = debug ? 0 : 1; 3128688Sphk break; 31331656Sguido case 'l': 31431656Sguido log = 1; 31531656Sguido break; 3161558Srgrimes default: 31737663Scharnier usage(); 3181558Srgrimes }; 3191558Srgrimes argc -= optind; 3201558Srgrimes argv += optind; 3211558Srgrimes grphead = (struct grouplist *)NULL; 3221558Srgrimes exphead = (struct exportlist *)NULL; 3231558Srgrimes mlhead = (struct mountlist *)NULL; 3241558Srgrimes if (argc == 1) { 3251558Srgrimes strncpy(exname, *argv, MAXPATHLEN-1); 3261558Srgrimes exname[MAXPATHLEN-1] = '\0'; 3271558Srgrimes } else 3281558Srgrimes strcpy(exname, _PATH_EXPORTS); 3291558Srgrimes openlog("mountd", LOG_PID, LOG_DAEMON); 3301558Srgrimes if (debug) 33137663Scharnier warnx("getting export list"); 3321558Srgrimes get_exportlist(); 3331558Srgrimes if (debug) 33437663Scharnier warnx("getting mount list"); 3351558Srgrimes get_mountlist(); 3361558Srgrimes if (debug) 33737663Scharnier warnx("here we go"); 3381558Srgrimes if (debug == 0) { 3391558Srgrimes daemon(0, 0); 3401558Srgrimes signal(SIGINT, SIG_IGN); 3411558Srgrimes signal(SIGQUIT, SIG_IGN); 3421558Srgrimes } 34375754Siedowse signal(SIGHUP, huphandler); 34474462Salfred signal(SIGTERM, terminate); 3451558Srgrimes { FILE *pidfile = fopen(_PATH_MOUNTDPID, "w"); 3461558Srgrimes if (pidfile != NULL) { 3471558Srgrimes fprintf(pidfile, "%d\n", getpid()); 3481558Srgrimes fclose(pidfile); 3491558Srgrimes } 3501558Srgrimes } 35174462Salfred rpcb_unset(RPCPROG_MNT, RPCMNT_VER1, NULL); 35274462Salfred rpcb_unset(RPCPROG_MNT, RPCMNT_VER3, NULL); 35374462Salfred udpsock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); 35474462Salfred tcpsock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); 35574791Salfred udpconf = getnetconfigent("udp"); 35674791Salfred tcpconf = getnetconfigent("tcp"); 35774791Salfred if (!have_v6) 35874791Salfred goto skip_v6; 35974462Salfred udp6sock = socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP); 36074462Salfred tcp6sock = socket(AF_INET6, SOCK_STREAM, IPPROTO_TCP); 36174462Salfred /* 36274462Salfred * We're doing host-based access checks here, so don't allow 36374462Salfred * v4-in-v6 to confuse things. The kernel will disable it 36474462Salfred * by default on NFS sockets too. 36574462Salfred */ 36674462Salfred if (udp6sock != -1 && setsockopt(udp6sock, IPPROTO_IPV6, 367100505Sume IPV6_V6ONLY, &one, sizeof one) < 0){ 36874462Salfred syslog(LOG_ERR, "can't disable v4-in-v6 on UDP socket"); 36974462Salfred exit(1); 37074462Salfred } 37174462Salfred if (tcp6sock != -1 && setsockopt(tcp6sock, IPPROTO_IPV6, 372100505Sume IPV6_V6ONLY, &one, sizeof one) < 0){ 37374462Salfred syslog(LOG_ERR, "can't disable v4-in-v6 on UDP socket"); 37474462Salfred exit(1); 37574462Salfred } 37674462Salfred udp6conf = getnetconfigent("udp6"); 37774462Salfred tcp6conf = getnetconfigent("tcp6"); 37874791Salfred 37974791Salfredskip_v6: 38024759Sguido if (!resvport_only) { 38183687Speter if (sysctlbyname("vfs.nfsrv.nfs_privport", NULL, NULL, 38283687Speter &resvport_only, sizeof(resvport_only)) != 0 && 38383687Speter errno != ENOENT) { 38424759Sguido syslog(LOG_ERR, "sysctl: %m"); 38524759Sguido exit(1); 38624759Sguido } 38724330Sguido } 38874462Salfred if (udpsock != -1 && udpconf != NULL) { 38974462Salfred bindresvport(udpsock, NULL); 39074462Salfred udptransp = svc_dg_create(udpsock, 0, 0); 39174462Salfred if (udptransp != NULL) { 39274462Salfred if (!svc_reg(udptransp, RPCPROG_MNT, RPCMNT_VER1, 39374462Salfred mntsrv, udpconf)) 39474462Salfred syslog(LOG_WARNING, "can't register UDP RPCMNT_VER1 service"); 39574462Salfred else 39674462Salfred xcreated++; 39774462Salfred if (!force_v2) { 39874462Salfred if (!svc_reg(udptransp, RPCPROG_MNT, RPCMNT_VER3, 39974462Salfred mntsrv, udpconf)) 40074462Salfred syslog(LOG_WARNING, "can't register UDP RPCMNT_VER3 service"); 40174462Salfred else 40274462Salfred xcreated++; 40374462Salfred } 40474462Salfred } else 40574462Salfred syslog(LOG_WARNING, "can't create UDP services"); 40674462Salfred 40774462Salfred } 40874462Salfred if (tcpsock != -1 && tcpconf != NULL) { 40974462Salfred bindresvport(tcpsock, NULL); 41074462Salfred listen(tcpsock, SOMAXCONN); 41174462Salfred tcptransp = svc_vc_create(tcpsock, 0, 0); 41274462Salfred if (tcptransp != NULL) { 41374462Salfred if (!svc_reg(tcptransp, RPCPROG_MNT, RPCMNT_VER1, 41474462Salfred mntsrv, tcpconf)) 41574462Salfred syslog(LOG_WARNING, "can't register TCP RPCMNT_VER1 service"); 41674462Salfred else 41774462Salfred xcreated++; 41874462Salfred if (!force_v2) { 41974462Salfred if (!svc_reg(tcptransp, RPCPROG_MNT, RPCMNT_VER3, 42074462Salfred mntsrv, tcpconf)) 42174462Salfred syslog(LOG_WARNING, "can't register TCP RPCMNT_VER3 service"); 42274462Salfred else 42374462Salfred xcreated++; 42474462Salfred } 42574462Salfred } else 42674462Salfred syslog(LOG_WARNING, "can't create TCP service"); 42774462Salfred 42874462Salfred } 42974791Salfred if (have_v6 && udp6sock != -1 && udp6conf != NULL) { 43074462Salfred bindresvport(udp6sock, NULL); 43174462Salfred udp6transp = svc_dg_create(udp6sock, 0, 0); 43274462Salfred if (udp6transp != NULL) { 43374462Salfred if (!svc_reg(udp6transp, RPCPROG_MNT, RPCMNT_VER1, 43474462Salfred mntsrv, udp6conf)) 43574462Salfred syslog(LOG_WARNING, "can't register UDP6 RPCMNT_VER1 service"); 43674462Salfred else 43774462Salfred xcreated++; 43874462Salfred if (!force_v2) { 43974462Salfred if (!svc_reg(udp6transp, RPCPROG_MNT, RPCMNT_VER3, 44074462Salfred mntsrv, udp6conf)) 44174462Salfred syslog(LOG_WARNING, "can't register UDP6 RPCMNT_VER3 service"); 44274462Salfred else 44374462Salfred xcreated++; 44474462Salfred } 44574462Salfred } else 44674462Salfred syslog(LOG_WARNING, "can't create UDP6 service"); 44774462Salfred 44874462Salfred } 44974791Salfred if (have_v6 && tcp6sock != -1 && tcp6conf != NULL) { 45074462Salfred bindresvport(tcp6sock, NULL); 45174462Salfred listen(tcp6sock, SOMAXCONN); 45274462Salfred tcp6transp = svc_vc_create(tcp6sock, 0, 0); 45374462Salfred if (tcp6transp != NULL) { 45474462Salfred if (!svc_reg(tcp6transp, RPCPROG_MNT, RPCMNT_VER1, 45574462Salfred mntsrv, tcp6conf)) 45674462Salfred syslog(LOG_WARNING, "can't register TCP6 RPCMNT_VER1 service"); 45774462Salfred else 45874462Salfred xcreated++; 45974462Salfred if (!force_v2) { 46074462Salfred if (!svc_reg(tcp6transp, RPCPROG_MNT, RPCMNT_VER3, 46174462Salfred mntsrv, tcp6conf)) 46274462Salfred syslog(LOG_WARNING, "can't register TCP6 RPCMNT_VER3 service"); 46374462Salfred else 46474462Salfred xcreated++; 46574462Salfred } 46674462Salfred } else 46774462Salfred syslog(LOG_WARNING, "can't create TCP6 service"); 46874462Salfred 46974462Salfred } 47074462Salfred if (xcreated == 0) { 47174462Salfred syslog(LOG_ERR, "could not create any services"); 4721558Srgrimes exit(1); 4731558Srgrimes } 47475754Siedowse 47575754Siedowse /* Expand svc_run() here so that we can call get_exportlist(). */ 47675754Siedowse for (;;) { 47775754Siedowse if (got_sighup) { 47875754Siedowse get_exportlist(); 47975754Siedowse got_sighup = 0; 48075754Siedowse } 48175754Siedowse readfds = svc_fdset; 48275754Siedowse switch (select(svc_maxfd + 1, &readfds, NULL, NULL, NULL)) { 48375754Siedowse case -1: 48475754Siedowse if (errno == EINTR) 48575754Siedowse continue; 48675754Siedowse syslog(LOG_ERR, "mountd died: select: %m"); 48775754Siedowse exit(1); 48875754Siedowse case 0: 48975754Siedowse continue; 49075754Siedowse default: 49175754Siedowse svc_getreqset(&readfds); 49275754Siedowse } 49375754Siedowse } 4941558Srgrimes} 4951558Srgrimes 49637663Scharnierstatic void 49737663Scharnierusage() 49837663Scharnier{ 49937663Scharnier fprintf(stderr, 50037663Scharnier "usage: mountd [-2] [-d] [-l] [-n] [-r] [export_file]\n"); 50137663Scharnier exit(1); 50237663Scharnier} 50337663Scharnier 5041558Srgrimes/* 5051558Srgrimes * The mount rpc service 5061558Srgrimes */ 5071558Srgrimesvoid 5081558Srgrimesmntsrv(rqstp, transp) 5091558Srgrimes struct svc_req *rqstp; 5101558Srgrimes SVCXPRT *transp; 5111558Srgrimes{ 5121558Srgrimes struct exportlist *ep; 5131558Srgrimes struct dirlist *dp; 5149336Sdfr struct fhreturn fhr; 5151558Srgrimes struct stat stb; 5161558Srgrimes struct statfs fsb; 51774462Salfred struct addrinfo *ai; 51874462Salfred char host[NI_MAXHOST], numerichost[NI_MAXHOST]; 51974462Salfred int lookup_failed = 1; 52074462Salfred struct sockaddr *saddr; 5219336Sdfr u_short sport; 52223681Speter char rpcpath[RPCMNT_PATHLEN + 1], dirpath[MAXPATHLEN]; 52328911Sguido int bad = 0, defset, hostset; 5249336Sdfr sigset_t sighup_mask; 5251558Srgrimes 5269336Sdfr sigemptyset(&sighup_mask); 5279336Sdfr sigaddset(&sighup_mask, SIGHUP); 52874462Salfred saddr = svc_getrpccaller(transp)->buf; 52974462Salfred switch (saddr->sa_family) { 53074462Salfred case AF_INET6: 53175635Siedowse sport = ntohs(((struct sockaddr_in6 *)saddr)->sin6_port); 53274462Salfred break; 53374462Salfred case AF_INET: 53475635Siedowse sport = ntohs(((struct sockaddr_in *)saddr)->sin_port); 53574462Salfred break; 53674462Salfred default: 53774462Salfred syslog(LOG_ERR, "request from unknown address family"); 53874462Salfred return; 53974462Salfred } 54074462Salfred lookup_failed = getnameinfo(saddr, saddr->sa_len, host, sizeof host, 54174462Salfred NULL, 0, 0); 54274462Salfred getnameinfo(saddr, saddr->sa_len, numerichost, 54374462Salfred sizeof numerichost, NULL, 0, NI_NUMERICHOST); 54474462Salfred ai = NULL; 5451558Srgrimes switch (rqstp->rq_proc) { 5461558Srgrimes case NULLPROC: 547100117Salfred if (!svc_sendreply(transp, xdr_void, NULL)) 54837663Scharnier syslog(LOG_ERR, "can't send reply"); 5491558Srgrimes return; 5501558Srgrimes case RPCMNT_MOUNT: 5519336Sdfr if (sport >= IPPORT_RESERVED && resvport_only) { 55231656Sguido syslog(LOG_NOTICE, 55331656Sguido "mount request from %s from unprivileged port", 55474462Salfred numerichost); 5551558Srgrimes svcerr_weakauth(transp); 5561558Srgrimes return; 5571558Srgrimes } 5581558Srgrimes if (!svc_getargs(transp, xdr_dir, rpcpath)) { 55931656Sguido syslog(LOG_NOTICE, "undecodable mount request from %s", 56074462Salfred numerichost); 5611558Srgrimes svcerr_decode(transp); 5621558Srgrimes return; 5631558Srgrimes } 5641558Srgrimes 5651558Srgrimes /* 5661558Srgrimes * Get the real pathname and make sure it is a directory 5679336Sdfr * or a regular file if the -r option was specified 5689336Sdfr * and it exists. 5691558Srgrimes */ 57051968Salfred if (realpath(rpcpath, dirpath) == NULL || 5711558Srgrimes stat(dirpath, &stb) < 0 || 5729336Sdfr (!S_ISDIR(stb.st_mode) && 57374462Salfred (dir_only || !S_ISREG(stb.st_mode))) || 5741558Srgrimes statfs(dirpath, &fsb) < 0) { 5751558Srgrimes chdir("/"); /* Just in case realpath doesn't */ 57631656Sguido syslog(LOG_NOTICE, 57737663Scharnier "mount request from %s for non existent path %s", 57874462Salfred numerichost, dirpath); 5791558Srgrimes if (debug) 58037663Scharnier warnx("stat failed on %s", dirpath); 58128911Sguido bad = ENOENT; /* We will send error reply later */ 5821558Srgrimes } 5831558Srgrimes 5841558Srgrimes /* Check in the exports list */ 5859336Sdfr sigprocmask(SIG_BLOCK, &sighup_mask, NULL); 5861558Srgrimes ep = ex_search(&fsb.f_fsid); 5879336Sdfr hostset = defset = 0; 5889336Sdfr if (ep && (chk_host(ep->ex_defdir, saddr, &defset, &hostset) || 5891558Srgrimes ((dp = dirp_search(ep->ex_dirl, dirpath)) && 59074462Salfred chk_host(dp, saddr, &defset, &hostset)) || 59174462Salfred (defset && scan_tree(ep->ex_defdir, saddr) == 0 && 59274462Salfred scan_tree(ep->ex_dirl, saddr) == 0))) { 59328911Sguido if (bad) { 59428911Sguido if (!svc_sendreply(transp, xdr_long, 59528911Sguido (caddr_t)&bad)) 59637663Scharnier syslog(LOG_ERR, "can't send reply"); 59728911Sguido sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 59828911Sguido return; 59928911Sguido } 6009336Sdfr if (hostset & DP_HOSTSET) 6019336Sdfr fhr.fhr_flag = hostset; 6029336Sdfr else 6039336Sdfr fhr.fhr_flag = defset; 6049336Sdfr fhr.fhr_vers = rqstp->rq_vers; 6051558Srgrimes /* Get the file handle */ 60623681Speter memset(&fhr.fhr_fh, 0, sizeof(nfsfh_t)); 6079336Sdfr if (getfh(dirpath, (fhandle_t *)&fhr.fhr_fh) < 0) { 6081558Srgrimes bad = errno; 60937663Scharnier syslog(LOG_ERR, "can't get fh for %s", dirpath); 6101558Srgrimes if (!svc_sendreply(transp, xdr_long, 6111558Srgrimes (caddr_t)&bad)) 61237663Scharnier syslog(LOG_ERR, "can't send reply"); 6139336Sdfr sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 6141558Srgrimes return; 6151558Srgrimes } 6169336Sdfr if (!svc_sendreply(transp, xdr_fhs, (caddr_t)&fhr)) 61737663Scharnier syslog(LOG_ERR, "can't send reply"); 61874462Salfred if (!lookup_failed) 61974462Salfred add_mlist(host, dirpath); 6201558Srgrimes else 62174462Salfred add_mlist(numerichost, dirpath); 6221558Srgrimes if (debug) 62337663Scharnier warnx("mount successful"); 62431656Sguido if (log) 62531656Sguido syslog(LOG_NOTICE, 62631656Sguido "mount request succeeded from %s for %s", 62774462Salfred numerichost, dirpath); 62831656Sguido } else { 6291558Srgrimes bad = EACCES; 63031656Sguido syslog(LOG_NOTICE, 63131656Sguido "mount request denied from %s for %s", 63274462Salfred numerichost, dirpath); 63331656Sguido } 63428911Sguido 63528911Sguido if (bad && !svc_sendreply(transp, xdr_long, (caddr_t)&bad)) 63637663Scharnier syslog(LOG_ERR, "can't send reply"); 6379336Sdfr sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 6381558Srgrimes return; 6391558Srgrimes case RPCMNT_DUMP: 6401558Srgrimes if (!svc_sendreply(transp, xdr_mlist, (caddr_t)NULL)) 64137663Scharnier syslog(LOG_ERR, "can't send reply"); 64231656Sguido else if (log) 64331656Sguido syslog(LOG_NOTICE, 64431656Sguido "dump request succeeded from %s", 64574462Salfred numerichost); 6461558Srgrimes return; 6471558Srgrimes case RPCMNT_UMOUNT: 6489336Sdfr if (sport >= IPPORT_RESERVED && resvport_only) { 64931656Sguido syslog(LOG_NOTICE, 65031656Sguido "umount request from %s from unprivileged port", 65174462Salfred numerichost); 6521558Srgrimes svcerr_weakauth(transp); 6531558Srgrimes return; 6541558Srgrimes } 65551968Salfred if (!svc_getargs(transp, xdr_dir, rpcpath)) { 65631656Sguido syslog(LOG_NOTICE, "undecodable umount request from %s", 65774462Salfred numerichost); 6581558Srgrimes svcerr_decode(transp); 6591558Srgrimes return; 6601558Srgrimes } 66151968Salfred if (realpath(rpcpath, dirpath) == NULL) { 66251968Salfred syslog(LOG_NOTICE, "umount request from %s " 66351968Salfred "for non existent path %s", 66474462Salfred numerichost, dirpath); 66551968Salfred } 6661558Srgrimes if (!svc_sendreply(transp, xdr_void, (caddr_t)NULL)) 66737663Scharnier syslog(LOG_ERR, "can't send reply"); 66874462Salfred if (!lookup_failed) 66975635Siedowse del_mlist(host, dirpath); 67075635Siedowse del_mlist(numerichost, dirpath); 67131656Sguido if (log) 67231656Sguido syslog(LOG_NOTICE, 67331656Sguido "umount request succeeded from %s for %s", 67474462Salfred numerichost, dirpath); 6751558Srgrimes return; 6761558Srgrimes case RPCMNT_UMNTALL: 6779336Sdfr if (sport >= IPPORT_RESERVED && resvport_only) { 67831656Sguido syslog(LOG_NOTICE, 67931656Sguido "umountall request from %s from unprivileged port", 68074462Salfred numerichost); 6811558Srgrimes svcerr_weakauth(transp); 6821558Srgrimes return; 6831558Srgrimes } 6841558Srgrimes if (!svc_sendreply(transp, xdr_void, (caddr_t)NULL)) 68537663Scharnier syslog(LOG_ERR, "can't send reply"); 68674462Salfred if (!lookup_failed) 68775635Siedowse del_mlist(host, NULL); 68875635Siedowse del_mlist(numerichost, NULL); 68931656Sguido if (log) 69031656Sguido syslog(LOG_NOTICE, 69131656Sguido "umountall request succeeded from %s", 69274462Salfred numerichost); 6931558Srgrimes return; 6941558Srgrimes case RPCMNT_EXPORT: 6951558Srgrimes if (!svc_sendreply(transp, xdr_explist, (caddr_t)NULL)) 696100117Salfred if (!svc_sendreply(transp, xdr_explist_brief, (caddr_t)NULL)) 697100117Salfred syslog(LOG_ERR, "can't send reply"); 69831656Sguido if (log) 69931656Sguido syslog(LOG_NOTICE, 70031656Sguido "export request succeeded from %s", 70174462Salfred numerichost); 7021558Srgrimes return; 7031558Srgrimes default: 7041558Srgrimes svcerr_noproc(transp); 7051558Srgrimes return; 7061558Srgrimes } 7071558Srgrimes} 7081558Srgrimes 7091558Srgrimes/* 7101558Srgrimes * Xdr conversion for a dirpath string 7111558Srgrimes */ 7121558Srgrimesint 7131558Srgrimesxdr_dir(xdrsp, dirp) 7141558Srgrimes XDR *xdrsp; 7151558Srgrimes char *dirp; 7161558Srgrimes{ 7171558Srgrimes return (xdr_string(xdrsp, &dirp, RPCMNT_PATHLEN)); 7181558Srgrimes} 7191558Srgrimes 7201558Srgrimes/* 7219336Sdfr * Xdr routine to generate file handle reply 7221558Srgrimes */ 7231558Srgrimesint 7249336Sdfrxdr_fhs(xdrsp, cp) 7251558Srgrimes XDR *xdrsp; 7269336Sdfr caddr_t cp; 7271558Srgrimes{ 72892806Sobrien struct fhreturn *fhrp = (struct fhreturn *)cp; 7299336Sdfr u_long ok = 0, len, auth; 7301558Srgrimes 7311558Srgrimes if (!xdr_long(xdrsp, &ok)) 7321558Srgrimes return (0); 7339336Sdfr switch (fhrp->fhr_vers) { 7349336Sdfr case 1: 7359336Sdfr return (xdr_opaque(xdrsp, (caddr_t)&fhrp->fhr_fh, NFSX_V2FH)); 7369336Sdfr case 3: 7379336Sdfr len = NFSX_V3FH; 7389336Sdfr if (!xdr_long(xdrsp, &len)) 7399336Sdfr return (0); 7409336Sdfr if (!xdr_opaque(xdrsp, (caddr_t)&fhrp->fhr_fh, len)) 7419336Sdfr return (0); 74283653Speter auth = RPCAUTH_UNIX; 7439336Sdfr len = 1; 7449336Sdfr if (!xdr_long(xdrsp, &len)) 7459336Sdfr return (0); 7469336Sdfr return (xdr_long(xdrsp, &auth)); 7479336Sdfr }; 7489336Sdfr return (0); 7491558Srgrimes} 7501558Srgrimes 7511558Srgrimesint 7521558Srgrimesxdr_mlist(xdrsp, cp) 7531558Srgrimes XDR *xdrsp; 7541558Srgrimes caddr_t cp; 7551558Srgrimes{ 7561558Srgrimes struct mountlist *mlp; 7571558Srgrimes int true = 1; 7581558Srgrimes int false = 0; 7591558Srgrimes char *strp; 7601558Srgrimes 7611558Srgrimes mlp = mlhead; 7621558Srgrimes while (mlp) { 7631558Srgrimes if (!xdr_bool(xdrsp, &true)) 7641558Srgrimes return (0); 7651558Srgrimes strp = &mlp->ml_host[0]; 7661558Srgrimes if (!xdr_string(xdrsp, &strp, RPCMNT_NAMELEN)) 7671558Srgrimes return (0); 7681558Srgrimes strp = &mlp->ml_dirp[0]; 7691558Srgrimes if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN)) 7701558Srgrimes return (0); 7711558Srgrimes mlp = mlp->ml_next; 7721558Srgrimes } 7731558Srgrimes if (!xdr_bool(xdrsp, &false)) 7741558Srgrimes return (0); 7751558Srgrimes return (1); 7761558Srgrimes} 7771558Srgrimes 7781558Srgrimes/* 7791558Srgrimes * Xdr conversion for export list 7801558Srgrimes */ 7811558Srgrimesint 782100117Salfredxdr_explist_common(xdrsp, cp, brief) 7831558Srgrimes XDR *xdrsp; 7841558Srgrimes caddr_t cp; 785100117Salfred int brief; 7861558Srgrimes{ 7871558Srgrimes struct exportlist *ep; 7881558Srgrimes int false = 0; 7899336Sdfr int putdef; 7909336Sdfr sigset_t sighup_mask; 7911558Srgrimes 7929336Sdfr sigemptyset(&sighup_mask); 7939336Sdfr sigaddset(&sighup_mask, SIGHUP); 7949336Sdfr sigprocmask(SIG_BLOCK, &sighup_mask, NULL); 7951558Srgrimes ep = exphead; 7961558Srgrimes while (ep) { 7971558Srgrimes putdef = 0; 798100117Salfred if (put_exlist(ep->ex_dirl, xdrsp, ep->ex_defdir, 799100117Salfred &putdef, brief)) 8001558Srgrimes goto errout; 8011558Srgrimes if (ep->ex_defdir && putdef == 0 && 8021558Srgrimes put_exlist(ep->ex_defdir, xdrsp, (struct dirlist *)NULL, 803100117Salfred &putdef, brief)) 8041558Srgrimes goto errout; 8051558Srgrimes ep = ep->ex_next; 8061558Srgrimes } 8079336Sdfr sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 8081558Srgrimes if (!xdr_bool(xdrsp, &false)) 8091558Srgrimes return (0); 8101558Srgrimes return (1); 8111558Srgrimeserrout: 8129336Sdfr sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 8131558Srgrimes return (0); 8141558Srgrimes} 8151558Srgrimes 8161558Srgrimes/* 8171558Srgrimes * Called from xdr_explist() to traverse the tree and export the 8181558Srgrimes * directory paths. 8191558Srgrimes */ 8201558Srgrimesint 821100117Salfredput_exlist(dp, xdrsp, adp, putdefp, brief) 8221558Srgrimes struct dirlist *dp; 8231558Srgrimes XDR *xdrsp; 8241558Srgrimes struct dirlist *adp; 8251558Srgrimes int *putdefp; 826100117Salfred int brief; 8271558Srgrimes{ 8281558Srgrimes struct grouplist *grp; 8291558Srgrimes struct hostlist *hp; 8301558Srgrimes int true = 1; 8311558Srgrimes int false = 0; 8321558Srgrimes int gotalldir = 0; 8331558Srgrimes char *strp; 8341558Srgrimes 8351558Srgrimes if (dp) { 836100117Salfred if (put_exlist(dp->dp_left, xdrsp, adp, putdefp, brief)) 8371558Srgrimes return (1); 8381558Srgrimes if (!xdr_bool(xdrsp, &true)) 8391558Srgrimes return (1); 8401558Srgrimes strp = dp->dp_dirp; 8411558Srgrimes if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN)) 8421558Srgrimes return (1); 8431558Srgrimes if (adp && !strcmp(dp->dp_dirp, adp->dp_dirp)) { 8441558Srgrimes gotalldir = 1; 8451558Srgrimes *putdefp = 1; 8461558Srgrimes } 847100117Salfred if (brief) { 848100117Salfred if (!xdr_bool(xdrsp, &true)) 849100117Salfred return (1); 850100117Salfred strp = "(...)"; 851100117Salfred if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN)) 852100117Salfred return (1); 853100117Salfred } else if ((dp->dp_flag & DP_DEFSET) == 0 && 8541558Srgrimes (gotalldir == 0 || (adp->dp_flag & DP_DEFSET) == 0)) { 8551558Srgrimes hp = dp->dp_hosts; 8561558Srgrimes while (hp) { 8571558Srgrimes grp = hp->ht_grp; 8581558Srgrimes if (grp->gr_type == GT_HOST) { 8591558Srgrimes if (!xdr_bool(xdrsp, &true)) 8601558Srgrimes return (1); 86174462Salfred strp = grp->gr_ptr.gt_addrinfo->ai_canonname; 8628871Srgrimes if (!xdr_string(xdrsp, &strp, 8631558Srgrimes RPCMNT_NAMELEN)) 8641558Srgrimes return (1); 8651558Srgrimes } else if (grp->gr_type == GT_NET) { 8661558Srgrimes if (!xdr_bool(xdrsp, &true)) 8671558Srgrimes return (1); 8681558Srgrimes strp = grp->gr_ptr.gt_net.nt_name; 8698871Srgrimes if (!xdr_string(xdrsp, &strp, 8701558Srgrimes RPCMNT_NAMELEN)) 8711558Srgrimes return (1); 8721558Srgrimes } 8731558Srgrimes hp = hp->ht_next; 8741558Srgrimes if (gotalldir && hp == (struct hostlist *)NULL) { 8751558Srgrimes hp = adp->dp_hosts; 8761558Srgrimes gotalldir = 0; 8771558Srgrimes } 8781558Srgrimes } 8791558Srgrimes } 8801558Srgrimes if (!xdr_bool(xdrsp, &false)) 8811558Srgrimes return (1); 882100117Salfred if (put_exlist(dp->dp_right, xdrsp, adp, putdefp, brief)) 8831558Srgrimes return (1); 8841558Srgrimes } 8851558Srgrimes return (0); 8861558Srgrimes} 8871558Srgrimes 888100117Salfredint 889100117Salfredxdr_explist(xdrsp, cp) 890100117Salfred XDR *xdrsp; 891100117Salfred caddr_t cp; 892100117Salfred{ 893100117Salfred 894100117Salfred return xdr_explist_common(xdrsp, cp, 0); 895100117Salfred} 896100117Salfred 897100117Salfredint 898100117Salfredxdr_explist_brief(xdrsp, cp) 899100117Salfred XDR *xdrsp; 900100117Salfred caddr_t cp; 901100117Salfred{ 902100117Salfred 903100117Salfred return xdr_explist_common(xdrsp, cp, 1); 904100117Salfred} 905100117Salfred 90696622Siedowsechar *line; 90796622Siedowseint linesize; 9081558SrgrimesFILE *exp_file; 9091558Srgrimes 9101558Srgrimes/* 9111558Srgrimes * Get the export list 9121558Srgrimes */ 9131558Srgrimesvoid 9141558Srgrimesget_exportlist() 9151558Srgrimes{ 9161558Srgrimes struct exportlist *ep, *ep2; 9171558Srgrimes struct grouplist *grp, *tgrp; 9181558Srgrimes struct exportlist **epp; 9191558Srgrimes struct dirlist *dirhead; 9201558Srgrimes struct statfs fsb, *fsp; 92172650Sgreen struct xucred anon; 9221558Srgrimes char *cp, *endcp, *dirp, *hst, *usr, *dom, savedc; 9231558Srgrimes int len, has_host, exflags, got_nondir, dirplen, num, i, netgrp; 9241558Srgrimes 92551968Salfred dirp = NULL; 92651968Salfred dirplen = 0; 92751968Salfred 9281558Srgrimes /* 9291558Srgrimes * First, get rid of the old list 9301558Srgrimes */ 9311558Srgrimes ep = exphead; 9321558Srgrimes while (ep) { 9331558Srgrimes ep2 = ep; 9341558Srgrimes ep = ep->ex_next; 9351558Srgrimes free_exp(ep2); 9361558Srgrimes } 9371558Srgrimes exphead = (struct exportlist *)NULL; 9381558Srgrimes 9391558Srgrimes grp = grphead; 9401558Srgrimes while (grp) { 9411558Srgrimes tgrp = grp; 9421558Srgrimes grp = grp->gr_next; 9431558Srgrimes free_grp(tgrp); 9441558Srgrimes } 9451558Srgrimes grphead = (struct grouplist *)NULL; 9461558Srgrimes 9471558Srgrimes /* 9481558Srgrimes * And delete exports that are in the kernel for all local 94996707Strhodes * filesystems. 95096707Strhodes * XXX: Should know how to handle all local exportable filesystems 95123681Speter * instead of just "ufs". 9521558Srgrimes */ 9531558Srgrimes num = getmntinfo(&fsp, MNT_NOWAIT); 9541558Srgrimes for (i = 0; i < num; i++) { 9551558Srgrimes union { 9561558Srgrimes struct ufs_args ua; 9571558Srgrimes struct iso_args ia; 9589336Sdfr struct msdosfs_args da; 95954093Ssemenu struct ntfs_args na; 9601558Srgrimes } targs; 9611558Srgrimes 96277435Sphk if (!strcmp(fsp->f_fstypename, "ufs") || 96377577Sru !strcmp(fsp->f_fstypename, "msdosfs") || 96454093Ssemenu !strcmp(fsp->f_fstypename, "ntfs") || 96523681Speter !strcmp(fsp->f_fstypename, "cd9660")) { 9669336Sdfr targs.ua.fspec = NULL; 9679336Sdfr targs.ua.export.ex_flags = MNT_DELEXPORT; 9689336Sdfr if (mount(fsp->f_fstypename, fsp->f_mntonname, 96977405Siedowse fsp->f_flags | MNT_UPDATE, (caddr_t)&targs) < 0 && 97077405Siedowse errno != ENOENT) 97177405Siedowse syslog(LOG_ERR, 97277405Siedowse "can't delete exports for %s: %m", 97374462Salfred fsp->f_mntonname); 9741558Srgrimes } 9751558Srgrimes fsp++; 9761558Srgrimes } 9771558Srgrimes 9781558Srgrimes /* 9791558Srgrimes * Read in the exports file and build the list, calling 9801558Srgrimes * mount() as we go along to push the export rules into the kernel. 9811558Srgrimes */ 9821558Srgrimes if ((exp_file = fopen(exname, "r")) == NULL) { 98337663Scharnier syslog(LOG_ERR, "can't open %s", exname); 9841558Srgrimes exit(2); 9851558Srgrimes } 9861558Srgrimes dirhead = (struct dirlist *)NULL; 9871558Srgrimes while (get_line()) { 9881558Srgrimes if (debug) 98937663Scharnier warnx("got line %s", line); 9901558Srgrimes cp = line; 9911558Srgrimes nextfield(&cp, &endcp); 9921558Srgrimes if (*cp == '#') 9931558Srgrimes goto nextline; 9941558Srgrimes 9951558Srgrimes /* 9961558Srgrimes * Set defaults. 9971558Srgrimes */ 9981558Srgrimes has_host = FALSE; 9991558Srgrimes anon = def_anon; 10001558Srgrimes exflags = MNT_EXPORTED; 10011558Srgrimes got_nondir = 0; 10021558Srgrimes opt_flags = 0; 10031558Srgrimes ep = (struct exportlist *)NULL; 10041558Srgrimes 10051558Srgrimes /* 10061558Srgrimes * Create new exports list entry 10071558Srgrimes */ 10081558Srgrimes len = endcp-cp; 10091558Srgrimes tgrp = grp = get_grp(); 10101558Srgrimes while (len > 0) { 10111558Srgrimes if (len > RPCMNT_NAMELEN) { 10121558Srgrimes getexp_err(ep, tgrp); 10131558Srgrimes goto nextline; 10141558Srgrimes } 10151558Srgrimes if (*cp == '-') { 10161558Srgrimes if (ep == (struct exportlist *)NULL) { 10171558Srgrimes getexp_err(ep, tgrp); 10181558Srgrimes goto nextline; 10191558Srgrimes } 10201558Srgrimes if (debug) 102137663Scharnier warnx("doing opt %s", cp); 10221558Srgrimes got_nondir = 1; 10231558Srgrimes if (do_opt(&cp, &endcp, ep, grp, &has_host, 10241558Srgrimes &exflags, &anon)) { 10251558Srgrimes getexp_err(ep, tgrp); 10261558Srgrimes goto nextline; 10271558Srgrimes } 10281558Srgrimes } else if (*cp == '/') { 10291558Srgrimes savedc = *endcp; 10301558Srgrimes *endcp = '\0'; 10311558Srgrimes if (check_dirpath(cp) && 10321558Srgrimes statfs(cp, &fsb) >= 0) { 10331558Srgrimes if (got_nondir) { 103437663Scharnier syslog(LOG_ERR, "dirs must be first"); 10351558Srgrimes getexp_err(ep, tgrp); 10361558Srgrimes goto nextline; 10371558Srgrimes } 10381558Srgrimes if (ep) { 10391558Srgrimes if (ep->ex_fs.val[0] != fsb.f_fsid.val[0] || 10401558Srgrimes ep->ex_fs.val[1] != fsb.f_fsid.val[1]) { 10411558Srgrimes getexp_err(ep, tgrp); 10421558Srgrimes goto nextline; 10431558Srgrimes } 10441558Srgrimes } else { 10451558Srgrimes /* 10461558Srgrimes * See if this directory is already 10471558Srgrimes * in the list. 10481558Srgrimes */ 10491558Srgrimes ep = ex_search(&fsb.f_fsid); 10501558Srgrimes if (ep == (struct exportlist *)NULL) { 10511558Srgrimes ep = get_exp(); 10521558Srgrimes ep->ex_fs = fsb.f_fsid; 10531558Srgrimes ep->ex_fsdir = (char *) 10541558Srgrimes malloc(strlen(fsb.f_mntonname) + 1); 10551558Srgrimes if (ep->ex_fsdir) 10561558Srgrimes strcpy(ep->ex_fsdir, 10571558Srgrimes fsb.f_mntonname); 10581558Srgrimes else 10591558Srgrimes out_of_mem(); 10601558Srgrimes if (debug) 106174462Salfred warnx("making new ep fs=0x%x,0x%x", 106274462Salfred fsb.f_fsid.val[0], 106374462Salfred fsb.f_fsid.val[1]); 10641558Srgrimes } else if (debug) 106537663Scharnier warnx("found ep fs=0x%x,0x%x", 10661558Srgrimes fsb.f_fsid.val[0], 10671558Srgrimes fsb.f_fsid.val[1]); 10681558Srgrimes } 10691558Srgrimes 10701558Srgrimes /* 10711558Srgrimes * Add dirpath to export mount point. 10721558Srgrimes */ 10731558Srgrimes dirp = add_expdir(&dirhead, cp, len); 10741558Srgrimes dirplen = len; 10751558Srgrimes } else { 10761558Srgrimes getexp_err(ep, tgrp); 10771558Srgrimes goto nextline; 10781558Srgrimes } 10791558Srgrimes *endcp = savedc; 10801558Srgrimes } else { 10811558Srgrimes savedc = *endcp; 10821558Srgrimes *endcp = '\0'; 10831558Srgrimes got_nondir = 1; 10841558Srgrimes if (ep == (struct exportlist *)NULL) { 10851558Srgrimes getexp_err(ep, tgrp); 10861558Srgrimes goto nextline; 10871558Srgrimes } 10881558Srgrimes 10891558Srgrimes /* 10901558Srgrimes * Get the host or netgroup. 10911558Srgrimes */ 10921558Srgrimes setnetgrent(cp); 10931558Srgrimes netgrp = getnetgrent(&hst, &usr, &dom); 10941558Srgrimes do { 10951558Srgrimes if (has_host) { 10961558Srgrimes grp->gr_next = get_grp(); 10971558Srgrimes grp = grp->gr_next; 10981558Srgrimes } 10991558Srgrimes if (netgrp) { 110037003Sjoerg if (hst == 0) { 110137663Scharnier syslog(LOG_ERR, 110237663Scharnier "null hostname in netgroup %s, skipping", cp); 110337004Sjoerg grp->gr_type = GT_IGNORE; 110437003Sjoerg } else if (get_host(hst, grp, tgrp)) { 110537663Scharnier syslog(LOG_ERR, 110637663Scharnier "bad host %s in netgroup %s, skipping", hst, cp); 110729317Sjlemon grp->gr_type = GT_IGNORE; 11081558Srgrimes } 11097401Swpaul } else if (get_host(cp, grp, tgrp)) { 111037663Scharnier syslog(LOG_ERR, "bad host %s, skipping", cp); 111129317Sjlemon grp->gr_type = GT_IGNORE; 11121558Srgrimes } 11131558Srgrimes has_host = TRUE; 11141558Srgrimes } while (netgrp && getnetgrent(&hst, &usr, &dom)); 11151558Srgrimes endnetgrent(); 11161558Srgrimes *endcp = savedc; 11171558Srgrimes } 11181558Srgrimes cp = endcp; 11191558Srgrimes nextfield(&cp, &endcp); 11201558Srgrimes len = endcp - cp; 11211558Srgrimes } 11221558Srgrimes if (check_options(dirhead)) { 11231558Srgrimes getexp_err(ep, tgrp); 11241558Srgrimes goto nextline; 11251558Srgrimes } 11261558Srgrimes if (!has_host) { 112775641Siedowse grp->gr_type = GT_DEFAULT; 11281558Srgrimes if (debug) 112937663Scharnier warnx("adding a default entry"); 11301558Srgrimes 11311558Srgrimes /* 11321558Srgrimes * Don't allow a network export coincide with a list of 11331558Srgrimes * host(s) on the same line. 11341558Srgrimes */ 11351558Srgrimes } else if ((opt_flags & OP_NET) && tgrp->gr_next) { 113675801Siedowse syslog(LOG_ERR, "network/host conflict"); 11371558Srgrimes getexp_err(ep, tgrp); 11381558Srgrimes goto nextline; 113929317Sjlemon 114074462Salfred /* 114174462Salfred * If an export list was specified on this line, make sure 114229317Sjlemon * that we have at least one valid entry, otherwise skip it. 114329317Sjlemon */ 114429317Sjlemon } else { 114529317Sjlemon grp = tgrp; 114674462Salfred while (grp && grp->gr_type == GT_IGNORE) 114729317Sjlemon grp = grp->gr_next; 114829317Sjlemon if (! grp) { 114929317Sjlemon getexp_err(ep, tgrp); 115029317Sjlemon goto nextline; 115129317Sjlemon } 11521558Srgrimes } 11531558Srgrimes 11541558Srgrimes /* 11551558Srgrimes * Loop through hosts, pushing the exports into the kernel. 11561558Srgrimes * After loop, tgrp points to the start of the list and 11571558Srgrimes * grp points to the last entry in the list. 11581558Srgrimes */ 11591558Srgrimes grp = tgrp; 11601558Srgrimes do { 116175635Siedowse if (do_mount(ep, grp, exflags, &anon, dirp, dirplen, 116275635Siedowse &fsb)) { 116375635Siedowse getexp_err(ep, tgrp); 116475635Siedowse goto nextline; 116575635Siedowse } 11661558Srgrimes } while (grp->gr_next && (grp = grp->gr_next)); 11671558Srgrimes 11681558Srgrimes /* 11691558Srgrimes * Success. Update the data structures. 11701558Srgrimes */ 11711558Srgrimes if (has_host) { 11729336Sdfr hang_dirp(dirhead, tgrp, ep, opt_flags); 11731558Srgrimes grp->gr_next = grphead; 11741558Srgrimes grphead = tgrp; 11751558Srgrimes } else { 11761558Srgrimes hang_dirp(dirhead, (struct grouplist *)NULL, ep, 11779336Sdfr opt_flags); 11781558Srgrimes free_grp(grp); 11791558Srgrimes } 11801558Srgrimes dirhead = (struct dirlist *)NULL; 11811558Srgrimes if ((ep->ex_flag & EX_LINKED) == 0) { 11821558Srgrimes ep2 = exphead; 11831558Srgrimes epp = &exphead; 11841558Srgrimes 11851558Srgrimes /* 11861558Srgrimes * Insert in the list in alphabetical order. 11871558Srgrimes */ 11881558Srgrimes while (ep2 && strcmp(ep2->ex_fsdir, ep->ex_fsdir) < 0) { 11891558Srgrimes epp = &ep2->ex_next; 11901558Srgrimes ep2 = ep2->ex_next; 11911558Srgrimes } 11921558Srgrimes if (ep2) 11931558Srgrimes ep->ex_next = ep2; 11941558Srgrimes *epp = ep; 11951558Srgrimes ep->ex_flag |= EX_LINKED; 11961558Srgrimes } 11971558Srgrimesnextline: 11981558Srgrimes if (dirhead) { 11991558Srgrimes free_dir(dirhead); 12001558Srgrimes dirhead = (struct dirlist *)NULL; 12011558Srgrimes } 12021558Srgrimes } 12031558Srgrimes fclose(exp_file); 12041558Srgrimes} 12051558Srgrimes 12061558Srgrimes/* 12071558Srgrimes * Allocate an export list element 12081558Srgrimes */ 12091558Srgrimesstruct exportlist * 12101558Srgrimesget_exp() 12111558Srgrimes{ 12121558Srgrimes struct exportlist *ep; 12131558Srgrimes 12141558Srgrimes ep = (struct exportlist *)malloc(sizeof (struct exportlist)); 12151558Srgrimes if (ep == (struct exportlist *)NULL) 12161558Srgrimes out_of_mem(); 121723681Speter memset(ep, 0, sizeof(struct exportlist)); 12181558Srgrimes return (ep); 12191558Srgrimes} 12201558Srgrimes 12211558Srgrimes/* 12221558Srgrimes * Allocate a group list element 12231558Srgrimes */ 12241558Srgrimesstruct grouplist * 12251558Srgrimesget_grp() 12261558Srgrimes{ 12271558Srgrimes struct grouplist *gp; 12281558Srgrimes 12291558Srgrimes gp = (struct grouplist *)malloc(sizeof (struct grouplist)); 12301558Srgrimes if (gp == (struct grouplist *)NULL) 12311558Srgrimes out_of_mem(); 123223681Speter memset(gp, 0, sizeof(struct grouplist)); 12331558Srgrimes return (gp); 12341558Srgrimes} 12351558Srgrimes 12361558Srgrimes/* 12371558Srgrimes * Clean up upon an error in get_exportlist(). 12381558Srgrimes */ 12391558Srgrimesvoid 12401558Srgrimesgetexp_err(ep, grp) 12411558Srgrimes struct exportlist *ep; 12421558Srgrimes struct grouplist *grp; 12431558Srgrimes{ 12441558Srgrimes struct grouplist *tgrp; 12451558Srgrimes 1246100336Sjoerg if (!(opt_flags & OP_QUIET)) 1247100336Sjoerg syslog(LOG_ERR, "bad exports list line %s", line); 12481558Srgrimes if (ep && (ep->ex_flag & EX_LINKED) == 0) 12491558Srgrimes free_exp(ep); 12501558Srgrimes while (grp) { 12511558Srgrimes tgrp = grp; 12521558Srgrimes grp = grp->gr_next; 12531558Srgrimes free_grp(tgrp); 12541558Srgrimes } 12551558Srgrimes} 12561558Srgrimes 12571558Srgrimes/* 12581558Srgrimes * Search the export list for a matching fs. 12591558Srgrimes */ 12601558Srgrimesstruct exportlist * 12611558Srgrimesex_search(fsid) 12621558Srgrimes fsid_t *fsid; 12631558Srgrimes{ 12641558Srgrimes struct exportlist *ep; 12651558Srgrimes 12661558Srgrimes ep = exphead; 12671558Srgrimes while (ep) { 12681558Srgrimes if (ep->ex_fs.val[0] == fsid->val[0] && 12691558Srgrimes ep->ex_fs.val[1] == fsid->val[1]) 12701558Srgrimes return (ep); 12711558Srgrimes ep = ep->ex_next; 12721558Srgrimes } 12731558Srgrimes return (ep); 12741558Srgrimes} 12751558Srgrimes 12761558Srgrimes/* 12771558Srgrimes * Add a directory path to the list. 12781558Srgrimes */ 12791558Srgrimeschar * 12801558Srgrimesadd_expdir(dpp, cp, len) 12811558Srgrimes struct dirlist **dpp; 12821558Srgrimes char *cp; 12831558Srgrimes int len; 12841558Srgrimes{ 12851558Srgrimes struct dirlist *dp; 12861558Srgrimes 12871558Srgrimes dp = (struct dirlist *)malloc(sizeof (struct dirlist) + len); 128837663Scharnier if (dp == (struct dirlist *)NULL) 128937663Scharnier out_of_mem(); 12901558Srgrimes dp->dp_left = *dpp; 12911558Srgrimes dp->dp_right = (struct dirlist *)NULL; 12921558Srgrimes dp->dp_flag = 0; 12931558Srgrimes dp->dp_hosts = (struct hostlist *)NULL; 12941558Srgrimes strcpy(dp->dp_dirp, cp); 12951558Srgrimes *dpp = dp; 12961558Srgrimes return (dp->dp_dirp); 12971558Srgrimes} 12981558Srgrimes 12991558Srgrimes/* 13001558Srgrimes * Hang the dir list element off the dirpath binary tree as required 13011558Srgrimes * and update the entry for host. 13021558Srgrimes */ 13031558Srgrimesvoid 13049336Sdfrhang_dirp(dp, grp, ep, flags) 13051558Srgrimes struct dirlist *dp; 13061558Srgrimes struct grouplist *grp; 13071558Srgrimes struct exportlist *ep; 13089336Sdfr int flags; 13091558Srgrimes{ 13101558Srgrimes struct hostlist *hp; 13111558Srgrimes struct dirlist *dp2; 13121558Srgrimes 13139336Sdfr if (flags & OP_ALLDIRS) { 13141558Srgrimes if (ep->ex_defdir) 13151558Srgrimes free((caddr_t)dp); 13161558Srgrimes else 13171558Srgrimes ep->ex_defdir = dp; 13189336Sdfr if (grp == (struct grouplist *)NULL) { 13191558Srgrimes ep->ex_defdir->dp_flag |= DP_DEFSET; 13209336Sdfr } else while (grp) { 13211558Srgrimes hp = get_ht(); 13221558Srgrimes hp->ht_grp = grp; 13231558Srgrimes hp->ht_next = ep->ex_defdir->dp_hosts; 13241558Srgrimes ep->ex_defdir->dp_hosts = hp; 13251558Srgrimes grp = grp->gr_next; 13261558Srgrimes } 13271558Srgrimes } else { 13281558Srgrimes 13291558Srgrimes /* 133037663Scharnier * Loop through the directories adding them to the tree. 13311558Srgrimes */ 13321558Srgrimes while (dp) { 13331558Srgrimes dp2 = dp->dp_left; 13349336Sdfr add_dlist(&ep->ex_dirl, dp, grp, flags); 13351558Srgrimes dp = dp2; 13361558Srgrimes } 13371558Srgrimes } 13381558Srgrimes} 13391558Srgrimes 13401558Srgrimes/* 13411558Srgrimes * Traverse the binary tree either updating a node that is already there 13421558Srgrimes * for the new directory or adding the new node. 13431558Srgrimes */ 13441558Srgrimesvoid 13459336Sdfradd_dlist(dpp, newdp, grp, flags) 13461558Srgrimes struct dirlist **dpp; 13471558Srgrimes struct dirlist *newdp; 13481558Srgrimes struct grouplist *grp; 13499336Sdfr int flags; 13501558Srgrimes{ 13511558Srgrimes struct dirlist *dp; 13521558Srgrimes struct hostlist *hp; 13531558Srgrimes int cmp; 13541558Srgrimes 13551558Srgrimes dp = *dpp; 13561558Srgrimes if (dp) { 13571558Srgrimes cmp = strcmp(dp->dp_dirp, newdp->dp_dirp); 13581558Srgrimes if (cmp > 0) { 13599336Sdfr add_dlist(&dp->dp_left, newdp, grp, flags); 13601558Srgrimes return; 13611558Srgrimes } else if (cmp < 0) { 13629336Sdfr add_dlist(&dp->dp_right, newdp, grp, flags); 13631558Srgrimes return; 13641558Srgrimes } else 13651558Srgrimes free((caddr_t)newdp); 13661558Srgrimes } else { 13671558Srgrimes dp = newdp; 13681558Srgrimes dp->dp_left = (struct dirlist *)NULL; 13691558Srgrimes *dpp = dp; 13701558Srgrimes } 13711558Srgrimes if (grp) { 13721558Srgrimes 13731558Srgrimes /* 13741558Srgrimes * Hang all of the host(s) off of the directory point. 13751558Srgrimes */ 13761558Srgrimes do { 13771558Srgrimes hp = get_ht(); 13781558Srgrimes hp->ht_grp = grp; 13791558Srgrimes hp->ht_next = dp->dp_hosts; 13801558Srgrimes dp->dp_hosts = hp; 13811558Srgrimes grp = grp->gr_next; 13821558Srgrimes } while (grp); 13839336Sdfr } else { 13841558Srgrimes dp->dp_flag |= DP_DEFSET; 13859336Sdfr } 13861558Srgrimes} 13871558Srgrimes 13881558Srgrimes/* 13891558Srgrimes * Search for a dirpath on the export point. 13901558Srgrimes */ 13911558Srgrimesstruct dirlist * 139274462Salfreddirp_search(dp, dirp) 13931558Srgrimes struct dirlist *dp; 139474462Salfred char *dirp; 13951558Srgrimes{ 13961558Srgrimes int cmp; 13971558Srgrimes 13981558Srgrimes if (dp) { 139974462Salfred cmp = strcmp(dp->dp_dirp, dirp); 14001558Srgrimes if (cmp > 0) 140174462Salfred return (dirp_search(dp->dp_left, dirp)); 14021558Srgrimes else if (cmp < 0) 140374462Salfred return (dirp_search(dp->dp_right, dirp)); 14041558Srgrimes else 14051558Srgrimes return (dp); 14061558Srgrimes } 14071558Srgrimes return (dp); 14081558Srgrimes} 14091558Srgrimes 14101558Srgrimes/* 14111558Srgrimes * Scan for a host match in a directory tree. 14121558Srgrimes */ 14131558Srgrimesint 14149336Sdfrchk_host(dp, saddr, defsetp, hostsetp) 14151558Srgrimes struct dirlist *dp; 141674462Salfred struct sockaddr *saddr; 14171558Srgrimes int *defsetp; 14189336Sdfr int *hostsetp; 14191558Srgrimes{ 14201558Srgrimes struct hostlist *hp; 14211558Srgrimes struct grouplist *grp; 142274462Salfred struct addrinfo *ai; 14231558Srgrimes 14241558Srgrimes if (dp) { 14251558Srgrimes if (dp->dp_flag & DP_DEFSET) 14269336Sdfr *defsetp = dp->dp_flag; 14271558Srgrimes hp = dp->dp_hosts; 14281558Srgrimes while (hp) { 14291558Srgrimes grp = hp->ht_grp; 14301558Srgrimes switch (grp->gr_type) { 14311558Srgrimes case GT_HOST: 143274462Salfred ai = grp->gr_ptr.gt_addrinfo; 143374462Salfred for (; ai; ai = ai->ai_next) { 143475801Siedowse if (!sacmp(ai->ai_addr, saddr, NULL)) { 143574462Salfred *hostsetp = 143674462Salfred (hp->ht_flag | DP_HOSTSET); 143774462Salfred return (1); 143874462Salfred } 14399336Sdfr } 144075801Siedowse break; 14411558Srgrimes case GT_NET: 144275801Siedowse if (!sacmp(saddr, (struct sockaddr *) 144375801Siedowse &grp->gr_ptr.gt_net.nt_net, 144475801Siedowse (struct sockaddr *) 144575801Siedowse &grp->gr_ptr.gt_net.nt_mask)) { 144674462Salfred *hostsetp = (hp->ht_flag | DP_HOSTSET); 144774462Salfred return (1); 144874462Salfred } 144975801Siedowse break; 145075801Siedowse } 14511558Srgrimes hp = hp->ht_next; 14521558Srgrimes } 14531558Srgrimes } 14541558Srgrimes return (0); 14551558Srgrimes} 14561558Srgrimes 14571558Srgrimes/* 14581558Srgrimes * Scan tree for a host that matches the address. 14591558Srgrimes */ 14601558Srgrimesint 14611558Srgrimesscan_tree(dp, saddr) 14621558Srgrimes struct dirlist *dp; 146374462Salfred struct sockaddr *saddr; 14641558Srgrimes{ 14659336Sdfr int defset, hostset; 14661558Srgrimes 14671558Srgrimes if (dp) { 14681558Srgrimes if (scan_tree(dp->dp_left, saddr)) 14691558Srgrimes return (1); 14709336Sdfr if (chk_host(dp, saddr, &defset, &hostset)) 14711558Srgrimes return (1); 14721558Srgrimes if (scan_tree(dp->dp_right, saddr)) 14731558Srgrimes return (1); 14741558Srgrimes } 14751558Srgrimes return (0); 14761558Srgrimes} 14771558Srgrimes 14781558Srgrimes/* 14791558Srgrimes * Traverse the dirlist tree and free it up. 14801558Srgrimes */ 14811558Srgrimesvoid 14821558Srgrimesfree_dir(dp) 14831558Srgrimes struct dirlist *dp; 14841558Srgrimes{ 14851558Srgrimes 14861558Srgrimes if (dp) { 14871558Srgrimes free_dir(dp->dp_left); 14881558Srgrimes free_dir(dp->dp_right); 14891558Srgrimes free_host(dp->dp_hosts); 14901558Srgrimes free((caddr_t)dp); 14911558Srgrimes } 14921558Srgrimes} 14931558Srgrimes 14941558Srgrimes/* 14951558Srgrimes * Parse the option string and update fields. 14961558Srgrimes * Option arguments may either be -<option>=<value> or 14971558Srgrimes * -<option> <value> 14981558Srgrimes */ 14991558Srgrimesint 15001558Srgrimesdo_opt(cpp, endcpp, ep, grp, has_hostp, exflagsp, cr) 15011558Srgrimes char **cpp, **endcpp; 15021558Srgrimes struct exportlist *ep; 15031558Srgrimes struct grouplist *grp; 15041558Srgrimes int *has_hostp; 15051558Srgrimes int *exflagsp; 150672650Sgreen struct xucred *cr; 15071558Srgrimes{ 15081558Srgrimes char *cpoptarg, *cpoptend; 15091558Srgrimes char *cp, *endcp, *cpopt, savedc, savedc2; 15101558Srgrimes int allflag, usedarg; 15111558Srgrimes 151251968Salfred savedc2 = '\0'; 15131558Srgrimes cpopt = *cpp; 15141558Srgrimes cpopt++; 15151558Srgrimes cp = *endcpp; 15161558Srgrimes savedc = *cp; 15171558Srgrimes *cp = '\0'; 15181558Srgrimes while (cpopt && *cpopt) { 15191558Srgrimes allflag = 1; 15201558Srgrimes usedarg = -2; 152137663Scharnier if ((cpoptend = strchr(cpopt, ','))) { 15221558Srgrimes *cpoptend++ = '\0'; 152337663Scharnier if ((cpoptarg = strchr(cpopt, '='))) 15241558Srgrimes *cpoptarg++ = '\0'; 15251558Srgrimes } else { 152637663Scharnier if ((cpoptarg = strchr(cpopt, '='))) 15271558Srgrimes *cpoptarg++ = '\0'; 15281558Srgrimes else { 15291558Srgrimes *cp = savedc; 15301558Srgrimes nextfield(&cp, &endcp); 15311558Srgrimes **endcpp = '\0'; 15321558Srgrimes if (endcp > cp && *cp != '-') { 15331558Srgrimes cpoptarg = cp; 15341558Srgrimes savedc2 = *endcp; 15351558Srgrimes *endcp = '\0'; 15361558Srgrimes usedarg = 0; 15371558Srgrimes } 15381558Srgrimes } 15391558Srgrimes } 15401558Srgrimes if (!strcmp(cpopt, "ro") || !strcmp(cpopt, "o")) { 15411558Srgrimes *exflagsp |= MNT_EXRDONLY; 15421558Srgrimes } else if (cpoptarg && (!strcmp(cpopt, "maproot") || 15431558Srgrimes !(allflag = strcmp(cpopt, "mapall")) || 15441558Srgrimes !strcmp(cpopt, "root") || !strcmp(cpopt, "r"))) { 15451558Srgrimes usedarg++; 15461558Srgrimes parsecred(cpoptarg, cr); 15471558Srgrimes if (allflag == 0) { 15481558Srgrimes *exflagsp |= MNT_EXPORTANON; 15491558Srgrimes opt_flags |= OP_MAPALL; 15501558Srgrimes } else 15511558Srgrimes opt_flags |= OP_MAPROOT; 15521558Srgrimes } else if (cpoptarg && (!strcmp(cpopt, "mask") || 155375801Siedowse !strcmp(cpopt, "m"))) { 15541558Srgrimes if (get_net(cpoptarg, &grp->gr_ptr.gt_net, 1)) { 155537663Scharnier syslog(LOG_ERR, "bad mask: %s", cpoptarg); 15561558Srgrimes return (1); 15571558Srgrimes } 15581558Srgrimes usedarg++; 15591558Srgrimes opt_flags |= OP_MASK; 15601558Srgrimes } else if (cpoptarg && (!strcmp(cpopt, "network") || 15611558Srgrimes !strcmp(cpopt, "n"))) { 156274462Salfred if (strchr(cpoptarg, '/') != NULL) { 156374462Salfred if (debug) 156474462Salfred fprintf(stderr, "setting OP_MASKLEN\n"); 156574462Salfred opt_flags |= OP_MASKLEN; 156674462Salfred } 15671558Srgrimes if (grp->gr_type != GT_NULL) { 156837663Scharnier syslog(LOG_ERR, "network/host conflict"); 15691558Srgrimes return (1); 15701558Srgrimes } else if (get_net(cpoptarg, &grp->gr_ptr.gt_net, 0)) { 157137663Scharnier syslog(LOG_ERR, "bad net: %s", cpoptarg); 15721558Srgrimes return (1); 15731558Srgrimes } 15741558Srgrimes grp->gr_type = GT_NET; 15751558Srgrimes *has_hostp = 1; 15761558Srgrimes usedarg++; 15771558Srgrimes opt_flags |= OP_NET; 15781558Srgrimes } else if (!strcmp(cpopt, "alldirs")) { 15791558Srgrimes opt_flags |= OP_ALLDIRS; 158027447Sdfr } else if (!strcmp(cpopt, "public")) { 158127447Sdfr *exflagsp |= MNT_EXPUBLIC; 158227447Sdfr } else if (!strcmp(cpopt, "webnfs")) { 158327447Sdfr *exflagsp |= (MNT_EXPUBLIC|MNT_EXRDONLY|MNT_EXPORTANON); 158427447Sdfr opt_flags |= OP_MAPALL; 158527447Sdfr } else if (cpoptarg && !strcmp(cpopt, "index")) { 158627447Sdfr ep->ex_indexfile = strdup(cpoptarg); 1587100336Sjoerg } else if (!strcmp(cpopt, "quiet")) { 1588100336Sjoerg opt_flags |= OP_QUIET; 15891558Srgrimes } else { 159037663Scharnier syslog(LOG_ERR, "bad opt %s", cpopt); 15911558Srgrimes return (1); 15921558Srgrimes } 15931558Srgrimes if (usedarg >= 0) { 15941558Srgrimes *endcp = savedc2; 15951558Srgrimes **endcpp = savedc; 15961558Srgrimes if (usedarg > 0) { 15971558Srgrimes *cpp = cp; 15981558Srgrimes *endcpp = endcp; 15991558Srgrimes } 16001558Srgrimes return (0); 16011558Srgrimes } 16021558Srgrimes cpopt = cpoptend; 16031558Srgrimes } 16041558Srgrimes **endcpp = savedc; 16051558Srgrimes return (0); 16061558Srgrimes} 16071558Srgrimes 16081558Srgrimes/* 16091558Srgrimes * Translate a character string to the corresponding list of network 16101558Srgrimes * addresses for a hostname. 16111558Srgrimes */ 16121558Srgrimesint 16137401Swpaulget_host(cp, grp, tgrp) 16141558Srgrimes char *cp; 16151558Srgrimes struct grouplist *grp; 16167401Swpaul struct grouplist *tgrp; 16171558Srgrimes{ 16187401Swpaul struct grouplist *checkgrp; 161975635Siedowse struct addrinfo *ai, *tai, hints; 162074462Salfred int ecode; 162174462Salfred char host[NI_MAXHOST]; 16221558Srgrimes 162374462Salfred if (grp->gr_type != GT_NULL) { 162474462Salfred syslog(LOG_ERR, "Bad netgroup type for ip host %s", cp); 16251558Srgrimes return (1); 16261558Srgrimes } 162774462Salfred memset(&hints, 0, sizeof hints); 162874462Salfred hints.ai_flags = AI_CANONNAME; 162974462Salfred hints.ai_protocol = IPPROTO_UDP; 163074462Salfred ecode = getaddrinfo(cp, NULL, &hints, &ai); 163174462Salfred if (ecode != 0) { 163275635Siedowse syslog(LOG_ERR,"can't get address info for host %s", cp); 163374462Salfred return 1; 163474462Salfred } 163574462Salfred grp->gr_ptr.gt_addrinfo = ai; 163674462Salfred while (ai != NULL) { 163774462Salfred if (ai->ai_canonname == NULL) { 163874462Salfred if (getnameinfo(ai->ai_addr, ai->ai_addrlen, host, 163974462Salfred sizeof host, NULL, 0, ninumeric) != 0) 164074462Salfred strlcpy(host, "?", sizeof(host)); 164174462Salfred ai->ai_canonname = strdup(host); 164274462Salfred ai->ai_flags |= AI_CANONNAME; 164375641Siedowse } 164474462Salfred if (debug) 164575635Siedowse fprintf(stderr, "got host %s\n", ai->ai_canonname); 164675635Siedowse /* 164775635Siedowse * Sanity check: make sure we don't already have an entry 164875635Siedowse * for this host in the grouplist. 164975635Siedowse */ 165075635Siedowse for (checkgrp = tgrp; checkgrp != NULL; 165175635Siedowse checkgrp = checkgrp->gr_next) { 165275635Siedowse if (checkgrp->gr_type != GT_HOST) 165375635Siedowse continue; 165475635Siedowse for (tai = checkgrp->gr_ptr.gt_addrinfo; tai != NULL; 165575635Siedowse tai = tai->ai_next) { 165675801Siedowse if (sacmp(tai->ai_addr, ai->ai_addr, NULL) != 0) 165775635Siedowse continue; 165875635Siedowse if (debug) 165975635Siedowse fprintf(stderr, 166075635Siedowse "ignoring duplicate host %s\n", 166175635Siedowse ai->ai_canonname); 166275635Siedowse grp->gr_type = GT_IGNORE; 166375635Siedowse return (0); 166475635Siedowse } 166575635Siedowse } 166674462Salfred ai = ai->ai_next; 16671558Srgrimes } 166875635Siedowse grp->gr_type = GT_HOST; 16691558Srgrimes return (0); 16701558Srgrimes} 16711558Srgrimes 16721558Srgrimes/* 16731558Srgrimes * Free up an exports list component 16741558Srgrimes */ 16751558Srgrimesvoid 16761558Srgrimesfree_exp(ep) 16771558Srgrimes struct exportlist *ep; 16781558Srgrimes{ 16791558Srgrimes 16801558Srgrimes if (ep->ex_defdir) { 16811558Srgrimes free_host(ep->ex_defdir->dp_hosts); 16821558Srgrimes free((caddr_t)ep->ex_defdir); 16831558Srgrimes } 16841558Srgrimes if (ep->ex_fsdir) 16851558Srgrimes free(ep->ex_fsdir); 168627447Sdfr if (ep->ex_indexfile) 168727447Sdfr free(ep->ex_indexfile); 16881558Srgrimes free_dir(ep->ex_dirl); 16891558Srgrimes free((caddr_t)ep); 16901558Srgrimes} 16911558Srgrimes 16921558Srgrimes/* 16931558Srgrimes * Free hosts. 16941558Srgrimes */ 16951558Srgrimesvoid 16961558Srgrimesfree_host(hp) 16971558Srgrimes struct hostlist *hp; 16981558Srgrimes{ 16991558Srgrimes struct hostlist *hp2; 17001558Srgrimes 17011558Srgrimes while (hp) { 17021558Srgrimes hp2 = hp; 17031558Srgrimes hp = hp->ht_next; 17041558Srgrimes free((caddr_t)hp2); 17051558Srgrimes } 17061558Srgrimes} 17071558Srgrimes 17081558Srgrimesstruct hostlist * 17091558Srgrimesget_ht() 17101558Srgrimes{ 17111558Srgrimes struct hostlist *hp; 17121558Srgrimes 17131558Srgrimes hp = (struct hostlist *)malloc(sizeof (struct hostlist)); 17141558Srgrimes if (hp == (struct hostlist *)NULL) 17151558Srgrimes out_of_mem(); 17161558Srgrimes hp->ht_next = (struct hostlist *)NULL; 17179336Sdfr hp->ht_flag = 0; 17181558Srgrimes return (hp); 17191558Srgrimes} 17201558Srgrimes 17211558Srgrimes/* 17221558Srgrimes * Out of memory, fatal 17231558Srgrimes */ 17241558Srgrimesvoid 17251558Srgrimesout_of_mem() 17261558Srgrimes{ 17271558Srgrimes 172837663Scharnier syslog(LOG_ERR, "out of memory"); 17291558Srgrimes exit(2); 17301558Srgrimes} 17311558Srgrimes 17321558Srgrimes/* 17331558Srgrimes * Do the mount syscall with the update flag to push the export info into 17341558Srgrimes * the kernel. 17351558Srgrimes */ 17361558Srgrimesint 17371558Srgrimesdo_mount(ep, grp, exflags, anoncrp, dirp, dirplen, fsb) 17381558Srgrimes struct exportlist *ep; 17391558Srgrimes struct grouplist *grp; 17401558Srgrimes int exflags; 174172650Sgreen struct xucred *anoncrp; 17421558Srgrimes char *dirp; 17431558Srgrimes int dirplen; 17441558Srgrimes struct statfs *fsb; 17451558Srgrimes{ 174675841Siedowse struct statfs fsb1; 174774462Salfred struct addrinfo *ai; 174875801Siedowse struct export_args *eap; 174974462Salfred char *cp = NULL; 17501558Srgrimes int done; 17511558Srgrimes char savedc = '\0'; 17521558Srgrimes union { 17531558Srgrimes struct ufs_args ua; 17541558Srgrimes struct iso_args ia; 17559336Sdfr struct msdosfs_args da; 175654093Ssemenu struct ntfs_args na; 17571558Srgrimes } args; 17581558Srgrimes 175975801Siedowse bzero(&args, sizeof args); 176075801Siedowse /* XXX, we assume that all xx_args look like ufs_args. */ 17611558Srgrimes args.ua.fspec = 0; 176275801Siedowse eap = &args.ua.export; 176375801Siedowse 176475801Siedowse eap->ex_flags = exflags; 176575801Siedowse eap->ex_anon = *anoncrp; 176675801Siedowse eap->ex_indexfile = ep->ex_indexfile; 176775641Siedowse if (grp->gr_type == GT_HOST) 176874462Salfred ai = grp->gr_ptr.gt_addrinfo; 176975641Siedowse else 177075641Siedowse ai = NULL; 17711558Srgrimes done = FALSE; 17721558Srgrimes while (!done) { 17731558Srgrimes switch (grp->gr_type) { 17741558Srgrimes case GT_HOST: 177575641Siedowse if (ai->ai_addr->sa_family == AF_INET6 && have_v6 == 0) 177674462Salfred goto skip; 177775801Siedowse eap->ex_addr = ai->ai_addr; 177875801Siedowse eap->ex_addrlen = ai->ai_addrlen; 177975801Siedowse eap->ex_masklen = 0; 17801558Srgrimes break; 17811558Srgrimes case GT_NET: 178275801Siedowse if (grp->gr_ptr.gt_net.nt_net.ss_family == AF_INET6 && 178374462Salfred have_v6 == 0) 178474462Salfred goto skip; 178575801Siedowse eap->ex_addr = 178675801Siedowse (struct sockaddr *)&grp->gr_ptr.gt_net.nt_net; 178775801Siedowse eap->ex_addrlen = args.ua.export.ex_addr->sa_len; 178875801Siedowse eap->ex_mask = 178975801Siedowse (struct sockaddr *)&grp->gr_ptr.gt_net.nt_mask; 179075801Siedowse eap->ex_masklen = args.ua.export.ex_mask->sa_len; 17911558Srgrimes break; 179275641Siedowse case GT_DEFAULT: 179375801Siedowse eap->ex_addr = NULL; 179475801Siedowse eap->ex_addrlen = 0; 179575801Siedowse eap->ex_mask = NULL; 179675801Siedowse eap->ex_masklen = 0; 179775641Siedowse break; 17987401Swpaul case GT_IGNORE: 17997401Swpaul return(0); 18007401Swpaul break; 18011558Srgrimes default: 180237663Scharnier syslog(LOG_ERR, "bad grouptype"); 18031558Srgrimes if (cp) 18041558Srgrimes *cp = savedc; 18051558Srgrimes return (1); 18061558Srgrimes }; 18071558Srgrimes 18081558Srgrimes /* 18091558Srgrimes * XXX: 18101558Srgrimes * Maybe I should just use the fsb->f_mntonname path instead 18111558Srgrimes * of looping back up the dirp to the mount point?? 18121558Srgrimes * Also, needs to know how to export all types of local 181396707Strhodes * exportable filesystems and not just "ufs". 18141558Srgrimes */ 18159336Sdfr while (mount(fsb->f_fstypename, dirp, 181674462Salfred fsb->f_flags | MNT_UPDATE, (caddr_t)&args) < 0) { 18171558Srgrimes if (cp) 18181558Srgrimes *cp-- = savedc; 18191558Srgrimes else 18201558Srgrimes cp = dirp + dirplen - 1; 1821100336Sjoerg if (opt_flags & OP_QUIET) 1822100336Sjoerg return (1); 18231558Srgrimes if (errno == EPERM) { 182475635Siedowse if (debug) 182575635Siedowse warnx("can't change attributes for %s", 182675635Siedowse dirp); 18271558Srgrimes syslog(LOG_ERR, 182837663Scharnier "can't change attributes for %s", dirp); 18291558Srgrimes return (1); 18301558Srgrimes } 18311558Srgrimes if (opt_flags & OP_ALLDIRS) { 1832100336Sjoerg if (errno == EINVAL) 1833100336Sjoerg syslog(LOG_ERR, 1834100336Sjoerg "-alldirs requested but %s is not a filesystem mountpoint", 1835100336Sjoerg dirp); 1836100336Sjoerg else 1837100336Sjoerg syslog(LOG_ERR, 1838100336Sjoerg "could not remount %s: %m", 1839100336Sjoerg dirp); 18401558Srgrimes return (1); 18411558Srgrimes } 18421558Srgrimes /* back up over the last component */ 18431558Srgrimes while (*cp == '/' && cp > dirp) 18441558Srgrimes cp--; 18451558Srgrimes while (*(cp - 1) != '/' && cp > dirp) 18461558Srgrimes cp--; 18471558Srgrimes if (cp == dirp) { 18481558Srgrimes if (debug) 184937663Scharnier warnx("mnt unsucc"); 185037663Scharnier syslog(LOG_ERR, "can't export %s", dirp); 18511558Srgrimes return (1); 18521558Srgrimes } 18531558Srgrimes savedc = *cp; 18541558Srgrimes *cp = '\0'; 185575841Siedowse /* Check that we're still on the same filesystem. */ 185675841Siedowse if (statfs(dirp, &fsb1) != 0 || bcmp(&fsb1.f_fsid, 185775841Siedowse &fsb->f_fsid, sizeof(fsb1.f_fsid)) != 0) { 185875841Siedowse *cp = savedc; 185975841Siedowse syslog(LOG_ERR, "can't export %s", dirp); 186075841Siedowse return (1); 186175841Siedowse } 18621558Srgrimes } 186374462Salfredskip: 186475641Siedowse if (ai != NULL) 186574462Salfred ai = ai->ai_next; 186675641Siedowse if (ai == NULL) 18671558Srgrimes done = TRUE; 18681558Srgrimes } 18691558Srgrimes if (cp) 18701558Srgrimes *cp = savedc; 18711558Srgrimes return (0); 18721558Srgrimes} 18731558Srgrimes 18741558Srgrimes/* 18751558Srgrimes * Translate a net address. 187675801Siedowse * 187775801Siedowse * If `maskflg' is nonzero, then `cp' is a netmask, not a network address. 18781558Srgrimes */ 18791558Srgrimesint 18801558Srgrimesget_net(cp, net, maskflg) 18811558Srgrimes char *cp; 18821558Srgrimes struct netmsk *net; 18831558Srgrimes int maskflg; 18841558Srgrimes{ 188575861Siedowse struct netent *np = NULL; 188674462Salfred char *name, *p, *prefp; 188775801Siedowse struct sockaddr_in sin; 188875861Siedowse struct sockaddr *sa = NULL; 188974462Salfred struct addrinfo hints, *ai = NULL; 189074462Salfred char netname[NI_MAXHOST]; 189174462Salfred long preflen; 18921558Srgrimes 189375635Siedowse p = prefp = NULL; 189474462Salfred if ((opt_flags & OP_MASKLEN) && !maskflg) { 189574462Salfred p = strchr(cp, '/'); 189674462Salfred *p = '\0'; 189774462Salfred prefp = p + 1; 189874462Salfred } 189974462Salfred 190075861Siedowse /* 190175861Siedowse * Check for a numeric address first. We wish to avoid 190275861Siedowse * possible DNS lookups in getnetbyname(). 190375861Siedowse */ 190475861Siedowse if (isxdigit(*cp) || *cp == ':') { 190574462Salfred memset(&hints, 0, sizeof hints); 190675801Siedowse /* Ensure the mask and the network have the same family. */ 190775801Siedowse if (maskflg && (opt_flags & OP_NET)) 190875801Siedowse hints.ai_family = net->nt_net.ss_family; 190975801Siedowse else if (!maskflg && (opt_flags & OP_HAVEMASK)) 191075801Siedowse hints.ai_family = net->nt_mask.ss_family; 191175801Siedowse else 191275801Siedowse hints.ai_family = AF_UNSPEC; 191374462Salfred hints.ai_flags = AI_NUMERICHOST; 191475861Siedowse if (getaddrinfo(cp, NULL, &hints, &ai) == 0) 191575861Siedowse sa = ai->ai_addr; 191675861Siedowse if (sa != NULL && ai->ai_family == AF_INET) { 191774462Salfred /* 191875801Siedowse * The address in `cp' is really a network address, so 191975801Siedowse * use inet_network() to re-interpret this correctly. 192075801Siedowse * e.g. "127.1" means 127.1.0.0, not 127.0.0.1. 192174462Salfred */ 192275801Siedowse bzero(&sin, sizeof sin); 192374462Salfred sin.sin_family = AF_INET; 192474462Salfred sin.sin_len = sizeof sin; 192575801Siedowse sin.sin_addr = inet_makeaddr(inet_network(cp), 0); 192674462Salfred if (debug) 192775801Siedowse fprintf(stderr, "get_net: v4 addr %s\n", 192875801Siedowse inet_ntoa(sin.sin_addr)); 192974462Salfred sa = (struct sockaddr *)&sin; 193075861Siedowse } 193175861Siedowse } 193275861Siedowse if (sa == NULL && (np = getnetbyname(cp)) != NULL) { 193375861Siedowse bzero(&sin, sizeof sin); 193475861Siedowse sin.sin_family = AF_INET; 193575861Siedowse sin.sin_len = sizeof sin; 193675861Siedowse sin.sin_addr = inet_makeaddr(np->n_net, 0); 193775861Siedowse sa = (struct sockaddr *)&sin; 193875861Siedowse } 193975861Siedowse if (sa == NULL) 194074462Salfred goto fail; 194125318Spst 194275801Siedowse if (maskflg) { 194375801Siedowse /* The specified sockaddr is a mask. */ 194475801Siedowse if (checkmask(sa) != 0) 194575801Siedowse goto fail; 194675801Siedowse bcopy(sa, &net->nt_mask, sa->sa_len); 194775801Siedowse opt_flags |= OP_HAVEMASK; 194875801Siedowse } else { 194975801Siedowse /* The specified sockaddr is a network address. */ 195075801Siedowse bcopy(sa, &net->nt_net, sa->sa_len); 195174462Salfred 195275801Siedowse /* Get a network name for the export list. */ 195375801Siedowse if (np) { 195475801Siedowse name = np->n_name; 195575801Siedowse } else if (getnameinfo(sa, sa->sa_len, netname, sizeof netname, 195675801Siedowse NULL, 0, ninumeric) == 0) { 195775801Siedowse name = netname; 195875801Siedowse } else { 195975801Siedowse goto fail; 196075801Siedowse } 196175801Siedowse if ((net->nt_name = strdup(name)) == NULL) 196275801Siedowse out_of_mem(); 196375801Siedowse 196475801Siedowse /* 196575801Siedowse * Extract a mask from either a "/<masklen>" suffix, or 196675801Siedowse * from the class of an IPv4 address. 196775801Siedowse */ 196874462Salfred if (opt_flags & OP_MASKLEN) { 196974462Salfred preflen = strtol(prefp, NULL, 10); 197075801Siedowse if (preflen < 0L || preflen == LONG_MAX) 197174462Salfred goto fail; 197275801Siedowse bcopy(sa, &net->nt_mask, sa->sa_len); 197375801Siedowse if (makemask(&net->nt_mask, (int)preflen) != 0) 197475801Siedowse goto fail; 197575801Siedowse opt_flags |= OP_HAVEMASK; 197674462Salfred *p = '/'; 197775801Siedowse } else if (sa->sa_family == AF_INET && 197875801Siedowse (opt_flags & OP_MASK) == 0) { 197975801Siedowse in_addr_t addr; 198074462Salfred 198175801Siedowse addr = ((struct sockaddr_in *)sa)->sin_addr.s_addr; 198275801Siedowse if (IN_CLASSA(addr)) 198375801Siedowse preflen = 8; 198475801Siedowse else if (IN_CLASSB(addr)) 198575801Siedowse preflen = 16; 198675801Siedowse else if (IN_CLASSC(addr)) 198775801Siedowse preflen = 24; 198875801Siedowse else if (IN_CLASSD(addr)) 198975801Siedowse preflen = 28; 199075801Siedowse else 199175801Siedowse preflen = 32; /* XXX */ 199275801Siedowse 199375801Siedowse bcopy(sa, &net->nt_mask, sa->sa_len); 199475801Siedowse makemask(&net->nt_mask, (int)preflen); 199575801Siedowse opt_flags |= OP_HAVEMASK; 199674462Salfred } 199774462Salfred } 199874462Salfred 199974462Salfred if (ai) 200074462Salfred freeaddrinfo(ai); 200174462Salfred return 0; 200274462Salfred 200374462Salfredfail: 200474462Salfred if (ai) 200574462Salfred freeaddrinfo(ai); 200674462Salfred return 1; 20071558Srgrimes} 20081558Srgrimes 20091558Srgrimes/* 20101558Srgrimes * Parse out the next white space separated field 20111558Srgrimes */ 20121558Srgrimesvoid 20131558Srgrimesnextfield(cp, endcp) 20141558Srgrimes char **cp; 20151558Srgrimes char **endcp; 20161558Srgrimes{ 20171558Srgrimes char *p; 20181558Srgrimes 20191558Srgrimes p = *cp; 20201558Srgrimes while (*p == ' ' || *p == '\t') 20211558Srgrimes p++; 20221558Srgrimes if (*p == '\n' || *p == '\0') 20231558Srgrimes *cp = *endcp = p; 20241558Srgrimes else { 20251558Srgrimes *cp = p++; 20261558Srgrimes while (*p != ' ' && *p != '\t' && *p != '\n' && *p != '\0') 20271558Srgrimes p++; 20281558Srgrimes *endcp = p; 20291558Srgrimes } 20301558Srgrimes} 20311558Srgrimes 20321558Srgrimes/* 20331558Srgrimes * Get an exports file line. Skip over blank lines and handle line 20341558Srgrimes * continuations. 20351558Srgrimes */ 20361558Srgrimesint 20371558Srgrimesget_line() 20381558Srgrimes{ 20391558Srgrimes char *p, *cp; 204096622Siedowse size_t len; 20411558Srgrimes int totlen, cont_line; 20421558Srgrimes 20431558Srgrimes /* 20441558Srgrimes * Loop around ignoring blank lines and getting all continuation lines. 20451558Srgrimes */ 20461558Srgrimes p = line; 20471558Srgrimes totlen = 0; 20481558Srgrimes do { 204996622Siedowse if ((p = fgetln(exp_file, &len)) == NULL) 20501558Srgrimes return (0); 20511558Srgrimes cp = p + len - 1; 20521558Srgrimes cont_line = 0; 20531558Srgrimes while (cp >= p && 20541558Srgrimes (*cp == ' ' || *cp == '\t' || *cp == '\n' || *cp == '\\')) { 20551558Srgrimes if (*cp == '\\') 20561558Srgrimes cont_line = 1; 20571558Srgrimes cp--; 20581558Srgrimes len--; 20591558Srgrimes } 206079117Sdd if (cont_line) { 206179117Sdd *++cp = ' '; 206279117Sdd len++; 206379117Sdd } 206496622Siedowse if (linesize < len + totlen + 1) { 206596622Siedowse linesize = len + totlen + 1; 206696622Siedowse line = realloc(line, linesize); 206796622Siedowse if (line == NULL) 206896622Siedowse out_of_mem(); 20691558Srgrimes } 207096622Siedowse memcpy(line + totlen, p, len); 207196622Siedowse totlen += len; 207296622Siedowse line[totlen] = '\0'; 20731558Srgrimes } while (totlen == 0 || cont_line); 20741558Srgrimes return (1); 20751558Srgrimes} 20761558Srgrimes 20771558Srgrimes/* 20781558Srgrimes * Parse a description of a credential. 20791558Srgrimes */ 20801558Srgrimesvoid 20811558Srgrimesparsecred(namelist, cr) 20821558Srgrimes char *namelist; 208372650Sgreen struct xucred *cr; 20841558Srgrimes{ 20851558Srgrimes char *name; 20861558Srgrimes int cnt; 20871558Srgrimes char *names; 20881558Srgrimes struct passwd *pw; 20891558Srgrimes struct group *gr; 20901558Srgrimes int ngroups, groups[NGROUPS + 1]; 20911558Srgrimes 209291354Sdd cr->cr_version = XUCRED_VERSION; 20931558Srgrimes /* 209437663Scharnier * Set up the unprivileged user. 20951558Srgrimes */ 20961558Srgrimes cr->cr_uid = -2; 20971558Srgrimes cr->cr_groups[0] = -2; 20981558Srgrimes cr->cr_ngroups = 1; 20991558Srgrimes /* 21001558Srgrimes * Get the user's password table entry. 21011558Srgrimes */ 21021558Srgrimes names = strsep(&namelist, " \t\n"); 21031558Srgrimes name = strsep(&names, ":"); 21041558Srgrimes if (isdigit(*name) || *name == '-') 21051558Srgrimes pw = getpwuid(atoi(name)); 21061558Srgrimes else 21071558Srgrimes pw = getpwnam(name); 21081558Srgrimes /* 21091558Srgrimes * Credentials specified as those of a user. 21101558Srgrimes */ 21111558Srgrimes if (names == NULL) { 21121558Srgrimes if (pw == NULL) { 211337663Scharnier syslog(LOG_ERR, "unknown user: %s", name); 21141558Srgrimes return; 21151558Srgrimes } 21161558Srgrimes cr->cr_uid = pw->pw_uid; 21171558Srgrimes ngroups = NGROUPS + 1; 21181558Srgrimes if (getgrouplist(pw->pw_name, pw->pw_gid, groups, &ngroups)) 211937663Scharnier syslog(LOG_ERR, "too many groups"); 21201558Srgrimes /* 21211558Srgrimes * Convert from int's to gid_t's and compress out duplicate 21221558Srgrimes */ 21231558Srgrimes cr->cr_ngroups = ngroups - 1; 21241558Srgrimes cr->cr_groups[0] = groups[0]; 21251558Srgrimes for (cnt = 2; cnt < ngroups; cnt++) 21261558Srgrimes cr->cr_groups[cnt - 1] = groups[cnt]; 21271558Srgrimes return; 21281558Srgrimes } 21291558Srgrimes /* 21301558Srgrimes * Explicit credential specified as a colon separated list: 21311558Srgrimes * uid:gid:gid:... 21321558Srgrimes */ 21331558Srgrimes if (pw != NULL) 21341558Srgrimes cr->cr_uid = pw->pw_uid; 21351558Srgrimes else if (isdigit(*name) || *name == '-') 21361558Srgrimes cr->cr_uid = atoi(name); 21371558Srgrimes else { 213837663Scharnier syslog(LOG_ERR, "unknown user: %s", name); 21391558Srgrimes return; 21401558Srgrimes } 21411558Srgrimes cr->cr_ngroups = 0; 21421558Srgrimes while (names != NULL && *names != '\0' && cr->cr_ngroups < NGROUPS) { 21431558Srgrimes name = strsep(&names, ":"); 21441558Srgrimes if (isdigit(*name) || *name == '-') { 21451558Srgrimes cr->cr_groups[cr->cr_ngroups++] = atoi(name); 21461558Srgrimes } else { 21471558Srgrimes if ((gr = getgrnam(name)) == NULL) { 214837663Scharnier syslog(LOG_ERR, "unknown group: %s", name); 21491558Srgrimes continue; 21501558Srgrimes } 21511558Srgrimes cr->cr_groups[cr->cr_ngroups++] = gr->gr_gid; 21521558Srgrimes } 21531558Srgrimes } 21541558Srgrimes if (names != NULL && *names != '\0' && cr->cr_ngroups == NGROUPS) 215537663Scharnier syslog(LOG_ERR, "too many groups"); 21561558Srgrimes} 21571558Srgrimes 21581558Srgrimes#define STRSIZ (RPCMNT_NAMELEN+RPCMNT_PATHLEN+50) 21591558Srgrimes/* 21601558Srgrimes * Routines that maintain the remote mounttab 21611558Srgrimes */ 21621558Srgrimesvoid 21631558Srgrimesget_mountlist() 21641558Srgrimes{ 21651558Srgrimes struct mountlist *mlp, **mlpp; 216623681Speter char *host, *dirp, *cp; 21671558Srgrimes char str[STRSIZ]; 21681558Srgrimes FILE *mlfile; 21691558Srgrimes 21701558Srgrimes if ((mlfile = fopen(_PATH_RMOUNTLIST, "r")) == NULL) { 217153117Sbillf if (errno == ENOENT) 217253117Sbillf return; 217353117Sbillf else { 217453117Sbillf syslog(LOG_ERR, "can't open %s", _PATH_RMOUNTLIST); 217553117Sbillf return; 217653117Sbillf } 21771558Srgrimes } 21781558Srgrimes mlpp = &mlhead; 21791558Srgrimes while (fgets(str, STRSIZ, mlfile) != NULL) { 218023681Speter cp = str; 218123681Speter host = strsep(&cp, " \t\n"); 218223681Speter dirp = strsep(&cp, " \t\n"); 218323681Speter if (host == NULL || dirp == NULL) 21841558Srgrimes continue; 21851558Srgrimes mlp = (struct mountlist *)malloc(sizeof (*mlp)); 218637663Scharnier if (mlp == (struct mountlist *)NULL) 218737663Scharnier out_of_mem(); 218823681Speter strncpy(mlp->ml_host, host, RPCMNT_NAMELEN); 218923681Speter mlp->ml_host[RPCMNT_NAMELEN] = '\0'; 219023681Speter strncpy(mlp->ml_dirp, dirp, RPCMNT_PATHLEN); 219123681Speter mlp->ml_dirp[RPCMNT_PATHLEN] = '\0'; 21921558Srgrimes mlp->ml_next = (struct mountlist *)NULL; 21931558Srgrimes *mlpp = mlp; 21941558Srgrimes mlpp = &mlp->ml_next; 21951558Srgrimes } 21961558Srgrimes fclose(mlfile); 21971558Srgrimes} 21981558Srgrimes 219975635Siedowsevoid 220075635Siedowsedel_mlist(char *hostp, char *dirp) 22011558Srgrimes{ 22021558Srgrimes struct mountlist *mlp, **mlpp; 22031558Srgrimes struct mountlist *mlp2; 22041558Srgrimes FILE *mlfile; 22051558Srgrimes int fnd = 0; 22061558Srgrimes 22071558Srgrimes mlpp = &mlhead; 22081558Srgrimes mlp = mlhead; 22091558Srgrimes while (mlp) { 22101558Srgrimes if (!strcmp(mlp->ml_host, hostp) && 22111558Srgrimes (!dirp || !strcmp(mlp->ml_dirp, dirp))) { 22121558Srgrimes fnd = 1; 22131558Srgrimes mlp2 = mlp; 22141558Srgrimes *mlpp = mlp = mlp->ml_next; 22151558Srgrimes free((caddr_t)mlp2); 22161558Srgrimes } else { 22171558Srgrimes mlpp = &mlp->ml_next; 22181558Srgrimes mlp = mlp->ml_next; 22191558Srgrimes } 22201558Srgrimes } 22211558Srgrimes if (fnd) { 22221558Srgrimes if ((mlfile = fopen(_PATH_RMOUNTLIST, "w")) == NULL) { 222337663Scharnier syslog(LOG_ERR,"can't update %s", _PATH_RMOUNTLIST); 22241558Srgrimes return; 22251558Srgrimes } 22261558Srgrimes mlp = mlhead; 22271558Srgrimes while (mlp) { 22281558Srgrimes fprintf(mlfile, "%s %s\n", mlp->ml_host, mlp->ml_dirp); 22291558Srgrimes mlp = mlp->ml_next; 22301558Srgrimes } 22311558Srgrimes fclose(mlfile); 22321558Srgrimes } 22331558Srgrimes} 22341558Srgrimes 22351558Srgrimesvoid 22361558Srgrimesadd_mlist(hostp, dirp) 22371558Srgrimes char *hostp, *dirp; 22381558Srgrimes{ 22391558Srgrimes struct mountlist *mlp, **mlpp; 22401558Srgrimes FILE *mlfile; 22411558Srgrimes 22421558Srgrimes mlpp = &mlhead; 22431558Srgrimes mlp = mlhead; 22441558Srgrimes while (mlp) { 22451558Srgrimes if (!strcmp(mlp->ml_host, hostp) && !strcmp(mlp->ml_dirp, dirp)) 22461558Srgrimes return; 22471558Srgrimes mlpp = &mlp->ml_next; 22481558Srgrimes mlp = mlp->ml_next; 22491558Srgrimes } 22501558Srgrimes mlp = (struct mountlist *)malloc(sizeof (*mlp)); 225137663Scharnier if (mlp == (struct mountlist *)NULL) 225237663Scharnier out_of_mem(); 22531558Srgrimes strncpy(mlp->ml_host, hostp, RPCMNT_NAMELEN); 22541558Srgrimes mlp->ml_host[RPCMNT_NAMELEN] = '\0'; 22551558Srgrimes strncpy(mlp->ml_dirp, dirp, RPCMNT_PATHLEN); 22561558Srgrimes mlp->ml_dirp[RPCMNT_PATHLEN] = '\0'; 22571558Srgrimes mlp->ml_next = (struct mountlist *)NULL; 22581558Srgrimes *mlpp = mlp; 22591558Srgrimes if ((mlfile = fopen(_PATH_RMOUNTLIST, "a")) == NULL) { 226037663Scharnier syslog(LOG_ERR, "can't update %s", _PATH_RMOUNTLIST); 22611558Srgrimes return; 22621558Srgrimes } 22631558Srgrimes fprintf(mlfile, "%s %s\n", mlp->ml_host, mlp->ml_dirp); 22641558Srgrimes fclose(mlfile); 22651558Srgrimes} 22661558Srgrimes 22671558Srgrimes/* 22681558Srgrimes * Free up a group list. 22691558Srgrimes */ 22701558Srgrimesvoid 22711558Srgrimesfree_grp(grp) 22721558Srgrimes struct grouplist *grp; 22731558Srgrimes{ 22741558Srgrimes if (grp->gr_type == GT_HOST) { 227574462Salfred if (grp->gr_ptr.gt_addrinfo != NULL) 227674462Salfred freeaddrinfo(grp->gr_ptr.gt_addrinfo); 22771558Srgrimes } else if (grp->gr_type == GT_NET) { 22781558Srgrimes if (grp->gr_ptr.gt_net.nt_name) 22791558Srgrimes free(grp->gr_ptr.gt_net.nt_name); 22801558Srgrimes } 22811558Srgrimes free((caddr_t)grp); 22821558Srgrimes} 22831558Srgrimes 22841558Srgrimes#ifdef DEBUG 22851558Srgrimesvoid 22861558SrgrimesSYSLOG(int pri, const char *fmt, ...) 22871558Srgrimes{ 22881558Srgrimes va_list ap; 22891558Srgrimes 22901558Srgrimes va_start(ap, fmt); 22911558Srgrimes vfprintf(stderr, fmt, ap); 22921558Srgrimes va_end(ap); 22931558Srgrimes} 22941558Srgrimes#endif /* DEBUG */ 22951558Srgrimes 22961558Srgrimes/* 22971558Srgrimes * Check options for consistency. 22981558Srgrimes */ 22991558Srgrimesint 23001558Srgrimescheck_options(dp) 23011558Srgrimes struct dirlist *dp; 23021558Srgrimes{ 23031558Srgrimes 23041558Srgrimes if (dp == (struct dirlist *)NULL) 23051558Srgrimes return (1); 230683653Speter if ((opt_flags & (OP_MAPROOT | OP_MAPALL)) == (OP_MAPROOT | OP_MAPALL)) { 230783653Speter syslog(LOG_ERR, "-mapall and -maproot mutually exclusive"); 23081558Srgrimes return (1); 23091558Srgrimes } 23101558Srgrimes if ((opt_flags & OP_MASK) && (opt_flags & OP_NET) == 0) { 231175801Siedowse syslog(LOG_ERR, "-mask requires -network"); 231275801Siedowse return (1); 23131558Srgrimes } 231475801Siedowse if ((opt_flags & OP_NET) && (opt_flags & OP_HAVEMASK) == 0) { 231575801Siedowse syslog(LOG_ERR, "-network requires mask specification"); 231675801Siedowse return (1); 231775801Siedowse } 231875801Siedowse if ((opt_flags & OP_MASK) && (opt_flags & OP_MASKLEN)) { 231975801Siedowse syslog(LOG_ERR, "-mask and /masklen are mutually exclusive"); 232075801Siedowse return (1); 232175801Siedowse } 23221558Srgrimes if ((opt_flags & OP_ALLDIRS) && dp->dp_left) { 232345927Salex syslog(LOG_ERR, "-alldirs has multiple directories"); 23241558Srgrimes return (1); 23251558Srgrimes } 23261558Srgrimes return (0); 23271558Srgrimes} 23281558Srgrimes 23291558Srgrimes/* 23301558Srgrimes * Check an absolute directory path for any symbolic links. Return true 23311558Srgrimes */ 23321558Srgrimesint 23331558Srgrimescheck_dirpath(dirp) 23341558Srgrimes char *dirp; 23351558Srgrimes{ 23361558Srgrimes char *cp; 23371558Srgrimes int ret = 1; 23381558Srgrimes struct stat sb; 23391558Srgrimes 23401558Srgrimes cp = dirp + 1; 23411558Srgrimes while (*cp && ret) { 23421558Srgrimes if (*cp == '/') { 23431558Srgrimes *cp = '\0'; 23449336Sdfr if (lstat(dirp, &sb) < 0 || !S_ISDIR(sb.st_mode)) 23451558Srgrimes ret = 0; 23461558Srgrimes *cp = '/'; 23471558Srgrimes } 23481558Srgrimes cp++; 23491558Srgrimes } 23509336Sdfr if (lstat(dirp, &sb) < 0 || !S_ISDIR(sb.st_mode)) 23511558Srgrimes ret = 0; 23521558Srgrimes return (ret); 23531558Srgrimes} 23549336Sdfr 235575801Siedowse/* 235675801Siedowse * Make a netmask according to the specified prefix length. The ss_family 235775801Siedowse * and other non-address fields must be initialised before calling this. 235875801Siedowse */ 235975801Siedowseint 236075801Siedowsemakemask(struct sockaddr_storage *ssp, int bitlen) 236174462Salfred{ 236275801Siedowse u_char *p; 236375801Siedowse int bits, i, len; 236474462Salfred 236575801Siedowse if ((p = sa_rawaddr((struct sockaddr *)ssp, &len)) == NULL) 236675801Siedowse return (-1); 2367103949Smike if (bitlen > len * CHAR_BIT) 236875801Siedowse return (-1); 236974462Salfred 237075801Siedowse for (i = 0; i < len; i++) { 2371103949Smike bits = (bitlen > CHAR_BIT) ? CHAR_BIT : bitlen; 237275801Siedowse *p++ = (1 << bits) - 1; 237375801Siedowse bitlen -= bits; 237474462Salfred } 237575801Siedowse return 0; 237674462Salfred} 237774462Salfred 237875801Siedowse/* 237975801Siedowse * Check that the sockaddr is a valid netmask. Returns 0 if the mask 238075801Siedowse * is acceptable (i.e. of the form 1...10....0). 238175801Siedowse */ 238275801Siedowseint 238375801Siedowsecheckmask(struct sockaddr *sa) 238474462Salfred{ 238575801Siedowse u_char *mask; 238675801Siedowse int i, len; 238774462Salfred 238875801Siedowse if ((mask = sa_rawaddr(sa, &len)) == NULL) 238975801Siedowse return (-1); 239075801Siedowse 239175801Siedowse for (i = 0; i < len; i++) 239275801Siedowse if (mask[i] != 0xff) 239375801Siedowse break; 239475801Siedowse if (i < len) { 239575801Siedowse if (~mask[i] & (u_char)(~mask[i] + 1)) 239675801Siedowse return (-1); 239775801Siedowse i++; 239874462Salfred } 239975801Siedowse for (; i < len; i++) 240075801Siedowse if (mask[i] != 0) 240175801Siedowse return (-1); 240275801Siedowse return (0); 240374462Salfred} 240474462Salfred 240575801Siedowse/* 240675801Siedowse * Compare two sockaddrs according to a specified mask. Return zero if 240775801Siedowse * `sa1' matches `sa2' when filtered by the netmask in `samask'. 240875801Siedowse * If samask is NULL, perform a full comparision. 240975801Siedowse */ 241075801Siedowseint 241175801Siedowsesacmp(struct sockaddr *sa1, struct sockaddr *sa2, struct sockaddr *samask) 241274462Salfred{ 241375801Siedowse unsigned char *p1, *p2, *mask; 241475801Siedowse int len, i; 241574462Salfred 241675801Siedowse if (sa1->sa_family != sa2->sa_family || 241775801Siedowse (p1 = sa_rawaddr(sa1, &len)) == NULL || 241875801Siedowse (p2 = sa_rawaddr(sa2, NULL)) == NULL) 241975801Siedowse return (1); 242075801Siedowse 242175801Siedowse switch (sa1->sa_family) { 242274462Salfred case AF_INET6: 242375801Siedowse if (((struct sockaddr_in6 *)sa1)->sin6_scope_id != 242475801Siedowse ((struct sockaddr_in6 *)sa2)->sin6_scope_id) 242575801Siedowse return (1); 242674462Salfred break; 242774462Salfred } 242874462Salfred 242975801Siedowse /* Simple binary comparison if no mask specified. */ 243075801Siedowse if (samask == NULL) 243175801Siedowse return (memcmp(p1, p2, len)); 243274462Salfred 243375801Siedowse /* Set up the mask, and do a mask-based comparison. */ 243475801Siedowse if (sa1->sa_family != samask->sa_family || 243575801Siedowse (mask = sa_rawaddr(samask, NULL)) == NULL) 243675801Siedowse return (1); 243774462Salfred 243875801Siedowse for (i = 0; i < len; i++) 243975801Siedowse if ((p1[i] & mask[i]) != (p2[i] & mask[i])) 244075801Siedowse return (1); 244175801Siedowse return (0); 244274462Salfred} 244374462Salfred 244475801Siedowse/* 244575801Siedowse * Return a pointer to the part of the sockaddr that contains the 244675801Siedowse * raw address, and set *nbytes to its length in bytes. Returns 244775801Siedowse * NULL if the address family is unknown. 244875801Siedowse */ 244975801Siedowsevoid * 245075801Siedowsesa_rawaddr(struct sockaddr *sa, int *nbytes) { 245175801Siedowse void *p; 245274462Salfred int len; 245374462Salfred 245475801Siedowse switch (sa->sa_family) { 245574462Salfred case AF_INET: 245675801Siedowse len = sizeof(((struct sockaddr_in *)sa)->sin_addr); 245775801Siedowse p = &((struct sockaddr_in *)sa)->sin_addr; 245874462Salfred break; 245974462Salfred case AF_INET6: 246075801Siedowse len = sizeof(((struct sockaddr_in6 *)sa)->sin6_addr); 246175801Siedowse p = &((struct sockaddr_in6 *)sa)->sin6_addr; 246274462Salfred break; 246374462Salfred default: 246475801Siedowse p = NULL; 246575801Siedowse len = 0; 246674462Salfred } 246774462Salfred 246875801Siedowse if (nbytes != NULL) 246975801Siedowse *nbytes = len; 247075801Siedowse return (p); 247174462Salfred} 247274462Salfred 247375754Siedowsevoid 247475754Siedowsehuphandler(int sig) 247575754Siedowse{ 247675754Siedowse got_sighup = 1; 247775754Siedowse} 247875754Siedowse 247974462Salfredvoid terminate(sig) 248074462Salfredint sig; 248174462Salfred{ 248274462Salfred close(mountdlockfd); 248374462Salfred unlink(MOUNTDLOCK); 248474792Salfred rpcb_unset(RPCPROG_MNT, RPCMNT_VER1, NULL); 248574792Salfred rpcb_unset(RPCPROG_MNT, RPCMNT_VER3, NULL); 248674462Salfred exit (0); 248774462Salfred} 2488