mountd.c revision 109363
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 109363 2003-01-16 07:27:30Z mbr $"); 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> 62109363Smbr#include <rpc/rpc_com.h> 631558Srgrimes#include <rpc/pmap_clnt.h> 6474462Salfred#include <rpc/pmap_prot.h> 6574462Salfred#include <rpcsvc/mount.h> 661558Srgrimes#include <nfs/rpcv2.h> 679336Sdfr#include <nfs/nfsproto.h> 6883653Speter#include <nfsserver/nfs.h> 6923681Speter#include <ufs/ufs/ufsmount.h> 7077162Sru#include <fs/msdosfs/msdosfsmount.h> 7177223Sru#include <fs/ntfs/ntfsmount.h> 7223681Speter#include <isofs/cd9660/cd9660_mount.h> /* XXX need isofs in include */ 731558Srgrimes 741558Srgrimes#include <arpa/inet.h> 751558Srgrimes 761558Srgrimes#include <ctype.h> 7737663Scharnier#include <err.h> 781558Srgrimes#include <errno.h> 791558Srgrimes#include <grp.h> 80103949Smike#include <limits.h> 811558Srgrimes#include <netdb.h> 821558Srgrimes#include <pwd.h> 831558Srgrimes#include <signal.h> 841558Srgrimes#include <stdio.h> 851558Srgrimes#include <stdlib.h> 861558Srgrimes#include <string.h> 871558Srgrimes#include <unistd.h> 881558Srgrimes#include "pathnames.h" 891558Srgrimes 901558Srgrimes#ifdef DEBUG 911558Srgrimes#include <stdarg.h> 921558Srgrimes#endif 931558Srgrimes 9474462Salfred#ifndef MOUNTDLOCK 9574462Salfred#define MOUNTDLOCK "/var/run/mountd.lock" 9674462Salfred#endif 9774462Salfred 981558Srgrimes/* 991558Srgrimes * Structures for keeping the mount list and export list 1001558Srgrimes */ 1011558Srgrimesstruct mountlist { 1021558Srgrimes struct mountlist *ml_next; 1031558Srgrimes char ml_host[RPCMNT_NAMELEN+1]; 1041558Srgrimes char ml_dirp[RPCMNT_PATHLEN+1]; 1051558Srgrimes}; 1061558Srgrimes 1071558Srgrimesstruct dirlist { 1081558Srgrimes struct dirlist *dp_left; 1091558Srgrimes struct dirlist *dp_right; 1101558Srgrimes int dp_flag; 1111558Srgrimes struct hostlist *dp_hosts; /* List of hosts this dir exported to */ 1121558Srgrimes char dp_dirp[1]; /* Actually malloc'd to size of dir */ 1131558Srgrimes}; 1141558Srgrimes/* dp_flag bits */ 1151558Srgrimes#define DP_DEFSET 0x1 1169336Sdfr#define DP_HOSTSET 0x2 1171558Srgrimes 1181558Srgrimesstruct exportlist { 1191558Srgrimes struct exportlist *ex_next; 1201558Srgrimes struct dirlist *ex_dirl; 1211558Srgrimes struct dirlist *ex_defdir; 1221558Srgrimes int ex_flag; 1231558Srgrimes fsid_t ex_fs; 1241558Srgrimes char *ex_fsdir; 12527447Sdfr char *ex_indexfile; 1261558Srgrimes}; 1271558Srgrimes/* ex_flag bits */ 1281558Srgrimes#define EX_LINKED 0x1 1291558Srgrimes 1301558Srgrimesstruct netmsk { 13174462Salfred struct sockaddr_storage nt_net; 13275801Siedowse struct sockaddr_storage nt_mask; 13342144Sdfr char *nt_name; 1341558Srgrimes}; 1351558Srgrimes 1361558Srgrimesunion grouptypes { 13774462Salfred struct addrinfo *gt_addrinfo; 1381558Srgrimes struct netmsk gt_net; 1391558Srgrimes}; 1401558Srgrimes 1411558Srgrimesstruct grouplist { 1421558Srgrimes int gr_type; 1431558Srgrimes union grouptypes gr_ptr; 1441558Srgrimes struct grouplist *gr_next; 1451558Srgrimes}; 1461558Srgrimes/* Group types */ 1471558Srgrimes#define GT_NULL 0x0 1481558Srgrimes#define GT_HOST 0x1 1491558Srgrimes#define GT_NET 0x2 15075641Siedowse#define GT_DEFAULT 0x3 1517401Swpaul#define GT_IGNORE 0x5 1521558Srgrimes 1531558Srgrimesstruct hostlist { 1549336Sdfr int ht_flag; /* Uses DP_xx bits */ 1551558Srgrimes struct grouplist *ht_grp; 1561558Srgrimes struct hostlist *ht_next; 1571558Srgrimes}; 1581558Srgrimes 1599336Sdfrstruct fhreturn { 1609336Sdfr int fhr_flag; 1619336Sdfr int fhr_vers; 1629336Sdfr nfsfh_t fhr_fh; 1639336Sdfr}; 1649336Sdfr 1651558Srgrimes/* Global defs */ 16692882Simpchar *add_expdir(struct dirlist **, char *, int); 16792882Simpvoid add_dlist(struct dirlist **, struct dirlist *, 16892882Simp struct grouplist *, int); 16992882Simpvoid add_mlist(char *, char *); 17092882Simpint check_dirpath(char *); 17192882Simpint check_options(struct dirlist *); 17275801Siedowseint checkmask(struct sockaddr *sa); 17392882Simpint chk_host(struct dirlist *, struct sockaddr *, int *, int *); 17475635Siedowsevoid del_mlist(char *hostp, char *dirp); 17592882Simpstruct dirlist *dirp_search(struct dirlist *, char *); 17692882Simpint do_mount(struct exportlist *, struct grouplist *, int, 17792882Simp struct xucred *, char *, int, struct statfs *); 17892882Simpint do_opt(char **, char **, struct exportlist *, struct grouplist *, 17992882Simp int *, int *, struct xucred *); 18092882Simpstruct exportlist *ex_search(fsid_t *); 18192882Simpstruct exportlist *get_exp(void); 18292882Simpvoid free_dir(struct dirlist *); 18392882Simpvoid free_exp(struct exportlist *); 18492882Simpvoid free_grp(struct grouplist *); 18592882Simpvoid free_host(struct hostlist *); 18692882Simpvoid get_exportlist(void); 18792882Simpint get_host(char *, struct grouplist *, struct grouplist *); 18892882Simpstruct hostlist *get_ht(void); 18992882Simpint get_line(void); 19092882Simpvoid get_mountlist(void); 19192882Simpint get_net(char *, struct netmsk *, int); 19292882Simpvoid getexp_err(struct exportlist *, struct grouplist *); 19392882Simpstruct grouplist *get_grp(void); 19492882Simpvoid hang_dirp(struct dirlist *, struct grouplist *, 19592882Simp struct exportlist *, int); 19675754Siedowsevoid huphandler(int sig); 19775801Siedowseint makemask(struct sockaddr_storage *ssp, int bitlen); 19892882Simpvoid mntsrv(struct svc_req *, SVCXPRT *); 19992882Simpvoid nextfield(char **, char **); 20092882Simpvoid out_of_mem(void); 20192882Simpvoid parsecred(char *, struct xucred *); 202100117Salfredint put_exlist(struct dirlist *, XDR *, struct dirlist *, int *, int); 20375801Siedowsevoid *sa_rawaddr(struct sockaddr *sa, int *nbytes); 20475801Siedowseint sacmp(struct sockaddr *sa1, struct sockaddr *sa2, 20575801Siedowse struct sockaddr *samask); 20692882Simpint scan_tree(struct dirlist *, struct sockaddr *); 20792882Simpstatic void usage(void); 20892882Simpint xdr_dir(XDR *, char *); 20992882Simpint xdr_explist(XDR *, caddr_t); 210100117Salfredint xdr_explist_brief(XDR *, caddr_t); 21192882Simpint xdr_fhs(XDR *, caddr_t); 21292882Simpint xdr_mlist(XDR *, caddr_t); 21392882Simpvoid terminate(int); 2141558Srgrimes 2151558Srgrimesstruct exportlist *exphead; 2161558Srgrimesstruct mountlist *mlhead; 2171558Srgrimesstruct grouplist *grphead; 2181558Srgrimeschar exname[MAXPATHLEN]; 21972650Sgreenstruct xucred def_anon = { 22091354Sdd XUCRED_VERSION, 22172650Sgreen (uid_t)-2, 2221558Srgrimes 1, 22372650Sgreen { (gid_t)-2 }, 22472650Sgreen NULL 2251558Srgrimes}; 22625087Sdfrint force_v2 = 0; 2279336Sdfrint resvport_only = 1; 2289336Sdfrint dir_only = 1; 22931705Sguidoint log = 0; 23075754Siedowseint got_sighup = 0; 23174462Salfred 2321558Srgrimesint opt_flags; 23374462Salfredstatic int have_v6 = 1; 23474462Salfred#ifdef NI_WITHSCOPEID 23574462Salfredstatic const int ninumeric = NI_NUMERICHOST | NI_WITHSCOPEID; 23674462Salfred#else 23774462Salfredstatic const int ninumeric = NI_NUMERICHOST; 23874462Salfred#endif 23974462Salfred 24074462Salfredint mountdlockfd; 24175801Siedowse/* Bits for opt_flags above */ 2421558Srgrimes#define OP_MAPROOT 0x01 2431558Srgrimes#define OP_MAPALL 0x02 24483653Speter/* 0x4 free */ 2451558Srgrimes#define OP_MASK 0x08 2461558Srgrimes#define OP_NET 0x10 2471558Srgrimes#define OP_ALLDIRS 0x40 24875801Siedowse#define OP_HAVEMASK 0x80 /* A mask was specified or inferred. */ 249100336Sjoerg#define OP_QUIET 0x100 25074462Salfred#define OP_MASKLEN 0x200 2511558Srgrimes 2521558Srgrimes#ifdef DEBUG 2531558Srgrimesint debug = 1; 25492882Simpvoid SYSLOG(int, const char *, ...) __printflike(2, 3); 2551558Srgrimes#define syslog SYSLOG 2561558Srgrimes#else 2571558Srgrimesint debug = 0; 2581558Srgrimes#endif 2591558Srgrimes 2601558Srgrimes/* 2611558Srgrimes * Mountd server for NFS mount protocol as described in: 2621558Srgrimes * NFS: Network File System Protocol Specification, RFC1094, Appendix A 2631558Srgrimes * The optional arguments are the exports file name 2641558Srgrimes * default: _PATH_EXPORTS 2651558Srgrimes * and "-n" to allow nonroot mount. 2661558Srgrimes */ 2671558Srgrimesint 2681558Srgrimesmain(argc, argv) 2691558Srgrimes int argc; 2701558Srgrimes char **argv; 2711558Srgrimes{ 27275754Siedowse fd_set readfds; 27374462Salfred SVCXPRT *udptransp, *tcptransp, *udp6transp, *tcp6transp; 27474462Salfred struct netconfig *udpconf, *tcpconf, *udp6conf, *tcp6conf; 27574462Salfred int udpsock, tcpsock, udp6sock, tcp6sock; 27674462Salfred int xcreated = 0, s; 277109363Smbr int maxrec = RPC_MAXDATASIZE; 27874462Salfred int one = 1; 27996622Siedowse int c; 2801558Srgrimes 28175635Siedowse udp6conf = tcp6conf = NULL; 28275635Siedowse udp6sock = tcp6sock = NULL; 28375635Siedowse 28474462Salfred /* Check that another mountd isn't already running. */ 28574462Salfred if ((mountdlockfd = (open(MOUNTDLOCK, O_RDONLY|O_CREAT, 0444))) == -1) 28674462Salfred err(1, "%s", MOUNTDLOCK); 28774462Salfred 28874462Salfred if(flock(mountdlockfd, LOCK_EX|LOCK_NB) == -1 && errno == EWOULDBLOCK) 289105267Scharnier errx(1, "another mountd is already running. Aborting"); 29074462Salfred s = socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP); 29174462Salfred if (s < 0) 29274462Salfred have_v6 = 0; 29374462Salfred else 29474462Salfred close(s); 29583687Speter if (modfind("nfsserver") < 0) { 29683687Speter /* Not present in kernel, try loading it */ 29783687Speter if (kldload("nfsserver") < 0 || modfind("nfsserver") < 0) 29883687Speter errx(1, "NFS server is not available or loadable"); 2992999Swollman } 3002999Swollman 30131665Sguido while ((c = getopt(argc, argv, "2dlnr")) != -1) 3021558Srgrimes switch (c) { 30325087Sdfr case '2': 30425087Sdfr force_v2 = 1; 30525087Sdfr break; 3069336Sdfr case 'n': 3079336Sdfr resvport_only = 0; 3089336Sdfr break; 3099336Sdfr case 'r': 3109336Sdfr dir_only = 0; 3119336Sdfr break; 3128688Sphk case 'd': 3138688Sphk debug = debug ? 0 : 1; 3148688Sphk break; 31531656Sguido case 'l': 31631656Sguido log = 1; 31731656Sguido break; 3181558Srgrimes default: 31937663Scharnier usage(); 3201558Srgrimes }; 3211558Srgrimes argc -= optind; 3221558Srgrimes argv += optind; 3231558Srgrimes grphead = (struct grouplist *)NULL; 3241558Srgrimes exphead = (struct exportlist *)NULL; 3251558Srgrimes mlhead = (struct mountlist *)NULL; 3261558Srgrimes if (argc == 1) { 3271558Srgrimes strncpy(exname, *argv, MAXPATHLEN-1); 3281558Srgrimes exname[MAXPATHLEN-1] = '\0'; 3291558Srgrimes } else 3301558Srgrimes strcpy(exname, _PATH_EXPORTS); 3311558Srgrimes openlog("mountd", LOG_PID, LOG_DAEMON); 3321558Srgrimes if (debug) 33337663Scharnier warnx("getting export list"); 3341558Srgrimes get_exportlist(); 3351558Srgrimes if (debug) 33637663Scharnier warnx("getting mount list"); 3371558Srgrimes get_mountlist(); 3381558Srgrimes if (debug) 33937663Scharnier warnx("here we go"); 3401558Srgrimes if (debug == 0) { 3411558Srgrimes daemon(0, 0); 3421558Srgrimes signal(SIGINT, SIG_IGN); 3431558Srgrimes signal(SIGQUIT, SIG_IGN); 3441558Srgrimes } 34575754Siedowse signal(SIGHUP, huphandler); 34674462Salfred signal(SIGTERM, terminate); 3471558Srgrimes { FILE *pidfile = fopen(_PATH_MOUNTDPID, "w"); 3481558Srgrimes if (pidfile != NULL) { 3491558Srgrimes fprintf(pidfile, "%d\n", getpid()); 3501558Srgrimes fclose(pidfile); 3511558Srgrimes } 3521558Srgrimes } 35374462Salfred rpcb_unset(RPCPROG_MNT, RPCMNT_VER1, NULL); 35474462Salfred rpcb_unset(RPCPROG_MNT, RPCMNT_VER3, NULL); 35574462Salfred udpsock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); 35674462Salfred tcpsock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); 35774791Salfred udpconf = getnetconfigent("udp"); 35874791Salfred tcpconf = getnetconfigent("tcp"); 359109363Smbr 360109363Smbr rpc_control(RPC_SVC_CONNMAXREC_SET, &maxrec); 361109363Smbr 36274791Salfred if (!have_v6) 36374791Salfred goto skip_v6; 36474462Salfred udp6sock = socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP); 36574462Salfred tcp6sock = socket(AF_INET6, SOCK_STREAM, IPPROTO_TCP); 36674462Salfred /* 36774462Salfred * We're doing host-based access checks here, so don't allow 36874462Salfred * v4-in-v6 to confuse things. The kernel will disable it 36974462Salfred * by default on NFS sockets too. 37074462Salfred */ 37174462Salfred if (udp6sock != -1 && setsockopt(udp6sock, 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 if (tcp6sock != -1 && setsockopt(tcp6sock, IPPROTO_IPV6, 377100505Sume IPV6_V6ONLY, &one, sizeof one) < 0){ 37874462Salfred syslog(LOG_ERR, "can't disable v4-in-v6 on UDP socket"); 37974462Salfred exit(1); 38074462Salfred } 38174462Salfred udp6conf = getnetconfigent("udp6"); 38274462Salfred tcp6conf = getnetconfigent("tcp6"); 38374791Salfred 38474791Salfredskip_v6: 38524759Sguido if (!resvport_only) { 38683687Speter if (sysctlbyname("vfs.nfsrv.nfs_privport", NULL, NULL, 38783687Speter &resvport_only, sizeof(resvport_only)) != 0 && 38883687Speter errno != ENOENT) { 38924759Sguido syslog(LOG_ERR, "sysctl: %m"); 39024759Sguido exit(1); 39124759Sguido } 39224330Sguido } 39374462Salfred if (udpsock != -1 && udpconf != NULL) { 39474462Salfred bindresvport(udpsock, NULL); 39574462Salfred udptransp = svc_dg_create(udpsock, 0, 0); 39674462Salfred if (udptransp != NULL) { 39774462Salfred if (!svc_reg(udptransp, RPCPROG_MNT, RPCMNT_VER1, 39874462Salfred mntsrv, udpconf)) 39974462Salfred syslog(LOG_WARNING, "can't register UDP RPCMNT_VER1 service"); 40074462Salfred else 40174462Salfred xcreated++; 40274462Salfred if (!force_v2) { 40374462Salfred if (!svc_reg(udptransp, RPCPROG_MNT, RPCMNT_VER3, 40474462Salfred mntsrv, udpconf)) 40574462Salfred syslog(LOG_WARNING, "can't register UDP RPCMNT_VER3 service"); 40674462Salfred else 40774462Salfred xcreated++; 40874462Salfred } 40974462Salfred } else 41074462Salfred syslog(LOG_WARNING, "can't create UDP services"); 41174462Salfred 41274462Salfred } 41374462Salfred if (tcpsock != -1 && tcpconf != NULL) { 41474462Salfred bindresvport(tcpsock, NULL); 41574462Salfred listen(tcpsock, SOMAXCONN); 416109363Smbr tcptransp = svc_vc_create(tcpsock, RPC_MAXDATASIZE, RPC_MAXDATASIZE); 41774462Salfred if (tcptransp != NULL) { 41874462Salfred if (!svc_reg(tcptransp, RPCPROG_MNT, RPCMNT_VER1, 41974462Salfred mntsrv, tcpconf)) 42074462Salfred syslog(LOG_WARNING, "can't register TCP RPCMNT_VER1 service"); 42174462Salfred else 42274462Salfred xcreated++; 42374462Salfred if (!force_v2) { 42474462Salfred if (!svc_reg(tcptransp, RPCPROG_MNT, RPCMNT_VER3, 42574462Salfred mntsrv, tcpconf)) 42674462Salfred syslog(LOG_WARNING, "can't register TCP RPCMNT_VER3 service"); 42774462Salfred else 42874462Salfred xcreated++; 42974462Salfred } 43074462Salfred } else 43174462Salfred syslog(LOG_WARNING, "can't create TCP service"); 43274462Salfred 43374462Salfred } 43474791Salfred if (have_v6 && udp6sock != -1 && udp6conf != NULL) { 43574462Salfred bindresvport(udp6sock, NULL); 43674462Salfred udp6transp = svc_dg_create(udp6sock, 0, 0); 43774462Salfred if (udp6transp != NULL) { 43874462Salfred if (!svc_reg(udp6transp, RPCPROG_MNT, RPCMNT_VER1, 43974462Salfred mntsrv, udp6conf)) 44074462Salfred syslog(LOG_WARNING, "can't register UDP6 RPCMNT_VER1 service"); 44174462Salfred else 44274462Salfred xcreated++; 44374462Salfred if (!force_v2) { 44474462Salfred if (!svc_reg(udp6transp, RPCPROG_MNT, RPCMNT_VER3, 44574462Salfred mntsrv, udp6conf)) 44674462Salfred syslog(LOG_WARNING, "can't register UDP6 RPCMNT_VER3 service"); 44774462Salfred else 44874462Salfred xcreated++; 44974462Salfred } 45074462Salfred } else 45174462Salfred syslog(LOG_WARNING, "can't create UDP6 service"); 45274462Salfred 45374462Salfred } 45474791Salfred if (have_v6 && tcp6sock != -1 && tcp6conf != NULL) { 45574462Salfred bindresvport(tcp6sock, NULL); 45674462Salfred listen(tcp6sock, SOMAXCONN); 457109363Smbr tcp6transp = svc_vc_create(tcp6sock, RPC_MAXDATASIZE, RPC_MAXDATASIZE); 45874462Salfred if (tcp6transp != NULL) { 45974462Salfred if (!svc_reg(tcp6transp, RPCPROG_MNT, RPCMNT_VER1, 46074462Salfred mntsrv, tcp6conf)) 46174462Salfred syslog(LOG_WARNING, "can't register TCP6 RPCMNT_VER1 service"); 46274462Salfred else 46374462Salfred xcreated++; 46474462Salfred if (!force_v2) { 46574462Salfred if (!svc_reg(tcp6transp, RPCPROG_MNT, RPCMNT_VER3, 46674462Salfred mntsrv, tcp6conf)) 46774462Salfred syslog(LOG_WARNING, "can't register TCP6 RPCMNT_VER3 service"); 46874462Salfred else 46974462Salfred xcreated++; 47074462Salfred } 47174462Salfred } else 47274462Salfred syslog(LOG_WARNING, "can't create TCP6 service"); 47374462Salfred 47474462Salfred } 47574462Salfred if (xcreated == 0) { 47674462Salfred syslog(LOG_ERR, "could not create any services"); 4771558Srgrimes exit(1); 4781558Srgrimes } 47975754Siedowse 48075754Siedowse /* Expand svc_run() here so that we can call get_exportlist(). */ 48175754Siedowse for (;;) { 48275754Siedowse if (got_sighup) { 48375754Siedowse get_exportlist(); 48475754Siedowse got_sighup = 0; 48575754Siedowse } 48675754Siedowse readfds = svc_fdset; 48775754Siedowse switch (select(svc_maxfd + 1, &readfds, NULL, NULL, NULL)) { 48875754Siedowse case -1: 48975754Siedowse if (errno == EINTR) 49075754Siedowse continue; 49175754Siedowse syslog(LOG_ERR, "mountd died: select: %m"); 49275754Siedowse exit(1); 49375754Siedowse case 0: 49475754Siedowse continue; 49575754Siedowse default: 49675754Siedowse svc_getreqset(&readfds); 49775754Siedowse } 49875754Siedowse } 4991558Srgrimes} 5001558Srgrimes 50137663Scharnierstatic void 50237663Scharnierusage() 50337663Scharnier{ 50437663Scharnier fprintf(stderr, 50537663Scharnier "usage: mountd [-2] [-d] [-l] [-n] [-r] [export_file]\n"); 50637663Scharnier exit(1); 50737663Scharnier} 50837663Scharnier 5091558Srgrimes/* 5101558Srgrimes * The mount rpc service 5111558Srgrimes */ 5121558Srgrimesvoid 5131558Srgrimesmntsrv(rqstp, transp) 5141558Srgrimes struct svc_req *rqstp; 5151558Srgrimes SVCXPRT *transp; 5161558Srgrimes{ 5171558Srgrimes struct exportlist *ep; 5181558Srgrimes struct dirlist *dp; 5199336Sdfr struct fhreturn fhr; 5201558Srgrimes struct stat stb; 5211558Srgrimes struct statfs fsb; 52274462Salfred struct addrinfo *ai; 52374462Salfred char host[NI_MAXHOST], numerichost[NI_MAXHOST]; 52474462Salfred int lookup_failed = 1; 52574462Salfred struct sockaddr *saddr; 5269336Sdfr u_short sport; 52723681Speter char rpcpath[RPCMNT_PATHLEN + 1], dirpath[MAXPATHLEN]; 52828911Sguido int bad = 0, defset, hostset; 5299336Sdfr sigset_t sighup_mask; 5301558Srgrimes 5319336Sdfr sigemptyset(&sighup_mask); 5329336Sdfr sigaddset(&sighup_mask, SIGHUP); 53374462Salfred saddr = svc_getrpccaller(transp)->buf; 53474462Salfred switch (saddr->sa_family) { 53574462Salfred case AF_INET6: 53675635Siedowse sport = ntohs(((struct sockaddr_in6 *)saddr)->sin6_port); 53774462Salfred break; 53874462Salfred case AF_INET: 53975635Siedowse sport = ntohs(((struct sockaddr_in *)saddr)->sin_port); 54074462Salfred break; 54174462Salfred default: 54274462Salfred syslog(LOG_ERR, "request from unknown address family"); 54374462Salfred return; 54474462Salfred } 54574462Salfred lookup_failed = getnameinfo(saddr, saddr->sa_len, host, sizeof host, 54674462Salfred NULL, 0, 0); 54774462Salfred getnameinfo(saddr, saddr->sa_len, numerichost, 54874462Salfred sizeof numerichost, NULL, 0, NI_NUMERICHOST); 54974462Salfred ai = NULL; 5501558Srgrimes switch (rqstp->rq_proc) { 5511558Srgrimes case NULLPROC: 552100117Salfred if (!svc_sendreply(transp, xdr_void, NULL)) 55337663Scharnier syslog(LOG_ERR, "can't send reply"); 5541558Srgrimes return; 5551558Srgrimes case RPCMNT_MOUNT: 5569336Sdfr if (sport >= IPPORT_RESERVED && resvport_only) { 55731656Sguido syslog(LOG_NOTICE, 55831656Sguido "mount request from %s from unprivileged port", 55974462Salfred numerichost); 5601558Srgrimes svcerr_weakauth(transp); 5611558Srgrimes return; 5621558Srgrimes } 5631558Srgrimes if (!svc_getargs(transp, xdr_dir, rpcpath)) { 56431656Sguido syslog(LOG_NOTICE, "undecodable mount request from %s", 56574462Salfred numerichost); 5661558Srgrimes svcerr_decode(transp); 5671558Srgrimes return; 5681558Srgrimes } 5691558Srgrimes 5701558Srgrimes /* 5711558Srgrimes * Get the real pathname and make sure it is a directory 5729336Sdfr * or a regular file if the -r option was specified 5739336Sdfr * and it exists. 5741558Srgrimes */ 57551968Salfred if (realpath(rpcpath, dirpath) == NULL || 5761558Srgrimes stat(dirpath, &stb) < 0 || 5779336Sdfr (!S_ISDIR(stb.st_mode) && 57874462Salfred (dir_only || !S_ISREG(stb.st_mode))) || 5791558Srgrimes statfs(dirpath, &fsb) < 0) { 5801558Srgrimes chdir("/"); /* Just in case realpath doesn't */ 58131656Sguido syslog(LOG_NOTICE, 58237663Scharnier "mount request from %s for non existent path %s", 58374462Salfred numerichost, dirpath); 5841558Srgrimes if (debug) 58537663Scharnier warnx("stat failed on %s", dirpath); 58628911Sguido bad = ENOENT; /* We will send error reply later */ 5871558Srgrimes } 5881558Srgrimes 5891558Srgrimes /* Check in the exports list */ 5909336Sdfr sigprocmask(SIG_BLOCK, &sighup_mask, NULL); 5911558Srgrimes ep = ex_search(&fsb.f_fsid); 5929336Sdfr hostset = defset = 0; 5939336Sdfr if (ep && (chk_host(ep->ex_defdir, saddr, &defset, &hostset) || 5941558Srgrimes ((dp = dirp_search(ep->ex_dirl, dirpath)) && 59574462Salfred chk_host(dp, saddr, &defset, &hostset)) || 59674462Salfred (defset && scan_tree(ep->ex_defdir, saddr) == 0 && 59774462Salfred scan_tree(ep->ex_dirl, saddr) == 0))) { 59828911Sguido if (bad) { 59928911Sguido if (!svc_sendreply(transp, xdr_long, 60028911Sguido (caddr_t)&bad)) 60137663Scharnier syslog(LOG_ERR, "can't send reply"); 60228911Sguido sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 60328911Sguido return; 60428911Sguido } 6059336Sdfr if (hostset & DP_HOSTSET) 6069336Sdfr fhr.fhr_flag = hostset; 6079336Sdfr else 6089336Sdfr fhr.fhr_flag = defset; 6099336Sdfr fhr.fhr_vers = rqstp->rq_vers; 6101558Srgrimes /* Get the file handle */ 61123681Speter memset(&fhr.fhr_fh, 0, sizeof(nfsfh_t)); 6129336Sdfr if (getfh(dirpath, (fhandle_t *)&fhr.fhr_fh) < 0) { 6131558Srgrimes bad = errno; 61437663Scharnier syslog(LOG_ERR, "can't get fh for %s", dirpath); 6151558Srgrimes if (!svc_sendreply(transp, xdr_long, 6161558Srgrimes (caddr_t)&bad)) 61737663Scharnier syslog(LOG_ERR, "can't send reply"); 6189336Sdfr sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 6191558Srgrimes return; 6201558Srgrimes } 6219336Sdfr if (!svc_sendreply(transp, xdr_fhs, (caddr_t)&fhr)) 62237663Scharnier syslog(LOG_ERR, "can't send reply"); 62374462Salfred if (!lookup_failed) 62474462Salfred add_mlist(host, dirpath); 6251558Srgrimes else 62674462Salfred add_mlist(numerichost, dirpath); 6271558Srgrimes if (debug) 62837663Scharnier warnx("mount successful"); 62931656Sguido if (log) 63031656Sguido syslog(LOG_NOTICE, 63131656Sguido "mount request succeeded from %s for %s", 63274462Salfred numerichost, dirpath); 63331656Sguido } else { 6341558Srgrimes bad = EACCES; 63531656Sguido syslog(LOG_NOTICE, 63631656Sguido "mount request denied from %s for %s", 63774462Salfred numerichost, dirpath); 63831656Sguido } 63928911Sguido 64028911Sguido if (bad && !svc_sendreply(transp, xdr_long, (caddr_t)&bad)) 64137663Scharnier syslog(LOG_ERR, "can't send reply"); 6429336Sdfr sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 6431558Srgrimes return; 6441558Srgrimes case RPCMNT_DUMP: 6451558Srgrimes if (!svc_sendreply(transp, xdr_mlist, (caddr_t)NULL)) 64637663Scharnier syslog(LOG_ERR, "can't send reply"); 64731656Sguido else if (log) 64831656Sguido syslog(LOG_NOTICE, 64931656Sguido "dump request succeeded from %s", 65074462Salfred numerichost); 6511558Srgrimes return; 6521558Srgrimes case RPCMNT_UMOUNT: 6539336Sdfr if (sport >= IPPORT_RESERVED && resvport_only) { 65431656Sguido syslog(LOG_NOTICE, 65531656Sguido "umount request from %s from unprivileged port", 65674462Salfred numerichost); 6571558Srgrimes svcerr_weakauth(transp); 6581558Srgrimes return; 6591558Srgrimes } 66051968Salfred if (!svc_getargs(transp, xdr_dir, rpcpath)) { 66131656Sguido syslog(LOG_NOTICE, "undecodable umount request from %s", 66274462Salfred numerichost); 6631558Srgrimes svcerr_decode(transp); 6641558Srgrimes return; 6651558Srgrimes } 66651968Salfred if (realpath(rpcpath, dirpath) == NULL) { 66751968Salfred syslog(LOG_NOTICE, "umount request from %s " 66851968Salfred "for non existent path %s", 66974462Salfred numerichost, dirpath); 67051968Salfred } 6711558Srgrimes if (!svc_sendreply(transp, xdr_void, (caddr_t)NULL)) 67237663Scharnier syslog(LOG_ERR, "can't send reply"); 67374462Salfred if (!lookup_failed) 67475635Siedowse del_mlist(host, dirpath); 67575635Siedowse del_mlist(numerichost, dirpath); 67631656Sguido if (log) 67731656Sguido syslog(LOG_NOTICE, 67831656Sguido "umount request succeeded from %s for %s", 67974462Salfred numerichost, dirpath); 6801558Srgrimes return; 6811558Srgrimes case RPCMNT_UMNTALL: 6829336Sdfr if (sport >= IPPORT_RESERVED && resvport_only) { 68331656Sguido syslog(LOG_NOTICE, 68431656Sguido "umountall request from %s from unprivileged port", 68574462Salfred numerichost); 6861558Srgrimes svcerr_weakauth(transp); 6871558Srgrimes return; 6881558Srgrimes } 6891558Srgrimes if (!svc_sendreply(transp, xdr_void, (caddr_t)NULL)) 69037663Scharnier syslog(LOG_ERR, "can't send reply"); 69174462Salfred if (!lookup_failed) 69275635Siedowse del_mlist(host, NULL); 69375635Siedowse del_mlist(numerichost, NULL); 69431656Sguido if (log) 69531656Sguido syslog(LOG_NOTICE, 69631656Sguido "umountall request succeeded from %s", 69774462Salfred numerichost); 6981558Srgrimes return; 6991558Srgrimes case RPCMNT_EXPORT: 7001558Srgrimes if (!svc_sendreply(transp, xdr_explist, (caddr_t)NULL)) 701100117Salfred if (!svc_sendreply(transp, xdr_explist_brief, (caddr_t)NULL)) 702100117Salfred syslog(LOG_ERR, "can't send reply"); 70331656Sguido if (log) 70431656Sguido syslog(LOG_NOTICE, 70531656Sguido "export request succeeded from %s", 70674462Salfred numerichost); 7071558Srgrimes return; 7081558Srgrimes default: 7091558Srgrimes svcerr_noproc(transp); 7101558Srgrimes return; 7111558Srgrimes } 7121558Srgrimes} 7131558Srgrimes 7141558Srgrimes/* 7151558Srgrimes * Xdr conversion for a dirpath string 7161558Srgrimes */ 7171558Srgrimesint 7181558Srgrimesxdr_dir(xdrsp, dirp) 7191558Srgrimes XDR *xdrsp; 7201558Srgrimes char *dirp; 7211558Srgrimes{ 7221558Srgrimes return (xdr_string(xdrsp, &dirp, RPCMNT_PATHLEN)); 7231558Srgrimes} 7241558Srgrimes 7251558Srgrimes/* 7269336Sdfr * Xdr routine to generate file handle reply 7271558Srgrimes */ 7281558Srgrimesint 7299336Sdfrxdr_fhs(xdrsp, cp) 7301558Srgrimes XDR *xdrsp; 7319336Sdfr caddr_t cp; 7321558Srgrimes{ 73392806Sobrien struct fhreturn *fhrp = (struct fhreturn *)cp; 7349336Sdfr u_long ok = 0, len, auth; 7351558Srgrimes 7361558Srgrimes if (!xdr_long(xdrsp, &ok)) 7371558Srgrimes return (0); 7389336Sdfr switch (fhrp->fhr_vers) { 7399336Sdfr case 1: 7409336Sdfr return (xdr_opaque(xdrsp, (caddr_t)&fhrp->fhr_fh, NFSX_V2FH)); 7419336Sdfr case 3: 7429336Sdfr len = NFSX_V3FH; 7439336Sdfr if (!xdr_long(xdrsp, &len)) 7449336Sdfr return (0); 7459336Sdfr if (!xdr_opaque(xdrsp, (caddr_t)&fhrp->fhr_fh, len)) 7469336Sdfr return (0); 74783653Speter auth = RPCAUTH_UNIX; 7489336Sdfr len = 1; 7499336Sdfr if (!xdr_long(xdrsp, &len)) 7509336Sdfr return (0); 7519336Sdfr return (xdr_long(xdrsp, &auth)); 7529336Sdfr }; 7539336Sdfr return (0); 7541558Srgrimes} 7551558Srgrimes 7561558Srgrimesint 7571558Srgrimesxdr_mlist(xdrsp, cp) 7581558Srgrimes XDR *xdrsp; 7591558Srgrimes caddr_t cp; 7601558Srgrimes{ 7611558Srgrimes struct mountlist *mlp; 7621558Srgrimes int true = 1; 7631558Srgrimes int false = 0; 7641558Srgrimes char *strp; 7651558Srgrimes 7661558Srgrimes mlp = mlhead; 7671558Srgrimes while (mlp) { 7681558Srgrimes if (!xdr_bool(xdrsp, &true)) 7691558Srgrimes return (0); 7701558Srgrimes strp = &mlp->ml_host[0]; 7711558Srgrimes if (!xdr_string(xdrsp, &strp, RPCMNT_NAMELEN)) 7721558Srgrimes return (0); 7731558Srgrimes strp = &mlp->ml_dirp[0]; 7741558Srgrimes if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN)) 7751558Srgrimes return (0); 7761558Srgrimes mlp = mlp->ml_next; 7771558Srgrimes } 7781558Srgrimes if (!xdr_bool(xdrsp, &false)) 7791558Srgrimes return (0); 7801558Srgrimes return (1); 7811558Srgrimes} 7821558Srgrimes 7831558Srgrimes/* 7841558Srgrimes * Xdr conversion for export list 7851558Srgrimes */ 7861558Srgrimesint 787100117Salfredxdr_explist_common(xdrsp, cp, brief) 7881558Srgrimes XDR *xdrsp; 7891558Srgrimes caddr_t cp; 790100117Salfred int brief; 7911558Srgrimes{ 7921558Srgrimes struct exportlist *ep; 7931558Srgrimes int false = 0; 7949336Sdfr int putdef; 7959336Sdfr sigset_t sighup_mask; 7961558Srgrimes 7979336Sdfr sigemptyset(&sighup_mask); 7989336Sdfr sigaddset(&sighup_mask, SIGHUP); 7999336Sdfr sigprocmask(SIG_BLOCK, &sighup_mask, NULL); 8001558Srgrimes ep = exphead; 8011558Srgrimes while (ep) { 8021558Srgrimes putdef = 0; 803100117Salfred if (put_exlist(ep->ex_dirl, xdrsp, ep->ex_defdir, 804100117Salfred &putdef, brief)) 8051558Srgrimes goto errout; 8061558Srgrimes if (ep->ex_defdir && putdef == 0 && 8071558Srgrimes put_exlist(ep->ex_defdir, xdrsp, (struct dirlist *)NULL, 808100117Salfred &putdef, brief)) 8091558Srgrimes goto errout; 8101558Srgrimes ep = ep->ex_next; 8111558Srgrimes } 8129336Sdfr sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 8131558Srgrimes if (!xdr_bool(xdrsp, &false)) 8141558Srgrimes return (0); 8151558Srgrimes return (1); 8161558Srgrimeserrout: 8179336Sdfr sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 8181558Srgrimes return (0); 8191558Srgrimes} 8201558Srgrimes 8211558Srgrimes/* 8221558Srgrimes * Called from xdr_explist() to traverse the tree and export the 8231558Srgrimes * directory paths. 8241558Srgrimes */ 8251558Srgrimesint 826100117Salfredput_exlist(dp, xdrsp, adp, putdefp, brief) 8271558Srgrimes struct dirlist *dp; 8281558Srgrimes XDR *xdrsp; 8291558Srgrimes struct dirlist *adp; 8301558Srgrimes int *putdefp; 831100117Salfred int brief; 8321558Srgrimes{ 8331558Srgrimes struct grouplist *grp; 8341558Srgrimes struct hostlist *hp; 8351558Srgrimes int true = 1; 8361558Srgrimes int false = 0; 8371558Srgrimes int gotalldir = 0; 8381558Srgrimes char *strp; 8391558Srgrimes 8401558Srgrimes if (dp) { 841100117Salfred if (put_exlist(dp->dp_left, xdrsp, adp, putdefp, brief)) 8421558Srgrimes return (1); 8431558Srgrimes if (!xdr_bool(xdrsp, &true)) 8441558Srgrimes return (1); 8451558Srgrimes strp = dp->dp_dirp; 8461558Srgrimes if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN)) 8471558Srgrimes return (1); 8481558Srgrimes if (adp && !strcmp(dp->dp_dirp, adp->dp_dirp)) { 8491558Srgrimes gotalldir = 1; 8501558Srgrimes *putdefp = 1; 8511558Srgrimes } 852100117Salfred if (brief) { 853100117Salfred if (!xdr_bool(xdrsp, &true)) 854100117Salfred return (1); 855100117Salfred strp = "(...)"; 856100117Salfred if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN)) 857100117Salfred return (1); 858100117Salfred } else if ((dp->dp_flag & DP_DEFSET) == 0 && 8591558Srgrimes (gotalldir == 0 || (adp->dp_flag & DP_DEFSET) == 0)) { 8601558Srgrimes hp = dp->dp_hosts; 8611558Srgrimes while (hp) { 8621558Srgrimes grp = hp->ht_grp; 8631558Srgrimes if (grp->gr_type == GT_HOST) { 8641558Srgrimes if (!xdr_bool(xdrsp, &true)) 8651558Srgrimes return (1); 86674462Salfred strp = grp->gr_ptr.gt_addrinfo->ai_canonname; 8678871Srgrimes if (!xdr_string(xdrsp, &strp, 8681558Srgrimes RPCMNT_NAMELEN)) 8691558Srgrimes return (1); 8701558Srgrimes } else if (grp->gr_type == GT_NET) { 8711558Srgrimes if (!xdr_bool(xdrsp, &true)) 8721558Srgrimes return (1); 8731558Srgrimes strp = grp->gr_ptr.gt_net.nt_name; 8748871Srgrimes if (!xdr_string(xdrsp, &strp, 8751558Srgrimes RPCMNT_NAMELEN)) 8761558Srgrimes return (1); 8771558Srgrimes } 8781558Srgrimes hp = hp->ht_next; 8791558Srgrimes if (gotalldir && hp == (struct hostlist *)NULL) { 8801558Srgrimes hp = adp->dp_hosts; 8811558Srgrimes gotalldir = 0; 8821558Srgrimes } 8831558Srgrimes } 8841558Srgrimes } 8851558Srgrimes if (!xdr_bool(xdrsp, &false)) 8861558Srgrimes return (1); 887100117Salfred if (put_exlist(dp->dp_right, xdrsp, adp, putdefp, brief)) 8881558Srgrimes return (1); 8891558Srgrimes } 8901558Srgrimes return (0); 8911558Srgrimes} 8921558Srgrimes 893100117Salfredint 894100117Salfredxdr_explist(xdrsp, cp) 895100117Salfred XDR *xdrsp; 896100117Salfred caddr_t cp; 897100117Salfred{ 898100117Salfred 899100117Salfred return xdr_explist_common(xdrsp, cp, 0); 900100117Salfred} 901100117Salfred 902100117Salfredint 903100117Salfredxdr_explist_brief(xdrsp, cp) 904100117Salfred XDR *xdrsp; 905100117Salfred caddr_t cp; 906100117Salfred{ 907100117Salfred 908100117Salfred return xdr_explist_common(xdrsp, cp, 1); 909100117Salfred} 910100117Salfred 91196622Siedowsechar *line; 91296622Siedowseint linesize; 9131558SrgrimesFILE *exp_file; 9141558Srgrimes 9151558Srgrimes/* 9161558Srgrimes * Get the export list 9171558Srgrimes */ 9181558Srgrimesvoid 9191558Srgrimesget_exportlist() 9201558Srgrimes{ 9211558Srgrimes struct exportlist *ep, *ep2; 9221558Srgrimes struct grouplist *grp, *tgrp; 9231558Srgrimes struct exportlist **epp; 9241558Srgrimes struct dirlist *dirhead; 9251558Srgrimes struct statfs fsb, *fsp; 92672650Sgreen struct xucred anon; 9271558Srgrimes char *cp, *endcp, *dirp, *hst, *usr, *dom, savedc; 9281558Srgrimes int len, has_host, exflags, got_nondir, dirplen, num, i, netgrp; 9291558Srgrimes 93051968Salfred dirp = NULL; 93151968Salfred dirplen = 0; 93251968Salfred 9331558Srgrimes /* 9341558Srgrimes * First, get rid of the old list 9351558Srgrimes */ 9361558Srgrimes ep = exphead; 9371558Srgrimes while (ep) { 9381558Srgrimes ep2 = ep; 9391558Srgrimes ep = ep->ex_next; 9401558Srgrimes free_exp(ep2); 9411558Srgrimes } 9421558Srgrimes exphead = (struct exportlist *)NULL; 9431558Srgrimes 9441558Srgrimes grp = grphead; 9451558Srgrimes while (grp) { 9461558Srgrimes tgrp = grp; 9471558Srgrimes grp = grp->gr_next; 9481558Srgrimes free_grp(tgrp); 9491558Srgrimes } 9501558Srgrimes grphead = (struct grouplist *)NULL; 9511558Srgrimes 9521558Srgrimes /* 9531558Srgrimes * And delete exports that are in the kernel for all local 95496707Strhodes * filesystems. 95596707Strhodes * XXX: Should know how to handle all local exportable filesystems 95623681Speter * instead of just "ufs". 9571558Srgrimes */ 9581558Srgrimes num = getmntinfo(&fsp, MNT_NOWAIT); 9591558Srgrimes for (i = 0; i < num; i++) { 9601558Srgrimes union { 9611558Srgrimes struct ufs_args ua; 9621558Srgrimes struct iso_args ia; 9639336Sdfr struct msdosfs_args da; 96454093Ssemenu struct ntfs_args na; 9651558Srgrimes } targs; 9661558Srgrimes 96777435Sphk if (!strcmp(fsp->f_fstypename, "ufs") || 96877577Sru !strcmp(fsp->f_fstypename, "msdosfs") || 96954093Ssemenu !strcmp(fsp->f_fstypename, "ntfs") || 97023681Speter !strcmp(fsp->f_fstypename, "cd9660")) { 9719336Sdfr targs.ua.fspec = NULL; 9729336Sdfr targs.ua.export.ex_flags = MNT_DELEXPORT; 9739336Sdfr if (mount(fsp->f_fstypename, fsp->f_mntonname, 97477405Siedowse fsp->f_flags | MNT_UPDATE, (caddr_t)&targs) < 0 && 97577405Siedowse errno != ENOENT) 97677405Siedowse syslog(LOG_ERR, 97777405Siedowse "can't delete exports for %s: %m", 97874462Salfred fsp->f_mntonname); 9791558Srgrimes } 9801558Srgrimes fsp++; 9811558Srgrimes } 9821558Srgrimes 9831558Srgrimes /* 9841558Srgrimes * Read in the exports file and build the list, calling 9851558Srgrimes * mount() as we go along to push the export rules into the kernel. 9861558Srgrimes */ 9871558Srgrimes if ((exp_file = fopen(exname, "r")) == NULL) { 98837663Scharnier syslog(LOG_ERR, "can't open %s", exname); 9891558Srgrimes exit(2); 9901558Srgrimes } 9911558Srgrimes dirhead = (struct dirlist *)NULL; 9921558Srgrimes while (get_line()) { 9931558Srgrimes if (debug) 99437663Scharnier warnx("got line %s", line); 9951558Srgrimes cp = line; 9961558Srgrimes nextfield(&cp, &endcp); 9971558Srgrimes if (*cp == '#') 9981558Srgrimes goto nextline; 9991558Srgrimes 10001558Srgrimes /* 10011558Srgrimes * Set defaults. 10021558Srgrimes */ 10031558Srgrimes has_host = FALSE; 10041558Srgrimes anon = def_anon; 10051558Srgrimes exflags = MNT_EXPORTED; 10061558Srgrimes got_nondir = 0; 10071558Srgrimes opt_flags = 0; 10081558Srgrimes ep = (struct exportlist *)NULL; 10091558Srgrimes 10101558Srgrimes /* 10111558Srgrimes * Create new exports list entry 10121558Srgrimes */ 10131558Srgrimes len = endcp-cp; 10141558Srgrimes tgrp = grp = get_grp(); 10151558Srgrimes while (len > 0) { 10161558Srgrimes if (len > RPCMNT_NAMELEN) { 10171558Srgrimes getexp_err(ep, tgrp); 10181558Srgrimes goto nextline; 10191558Srgrimes } 10201558Srgrimes if (*cp == '-') { 10211558Srgrimes if (ep == (struct exportlist *)NULL) { 10221558Srgrimes getexp_err(ep, tgrp); 10231558Srgrimes goto nextline; 10241558Srgrimes } 10251558Srgrimes if (debug) 102637663Scharnier warnx("doing opt %s", cp); 10271558Srgrimes got_nondir = 1; 10281558Srgrimes if (do_opt(&cp, &endcp, ep, grp, &has_host, 10291558Srgrimes &exflags, &anon)) { 10301558Srgrimes getexp_err(ep, tgrp); 10311558Srgrimes goto nextline; 10321558Srgrimes } 10331558Srgrimes } else if (*cp == '/') { 10341558Srgrimes savedc = *endcp; 10351558Srgrimes *endcp = '\0'; 10361558Srgrimes if (check_dirpath(cp) && 10371558Srgrimes statfs(cp, &fsb) >= 0) { 10381558Srgrimes if (got_nondir) { 103937663Scharnier syslog(LOG_ERR, "dirs must be first"); 10401558Srgrimes getexp_err(ep, tgrp); 10411558Srgrimes goto nextline; 10421558Srgrimes } 10431558Srgrimes if (ep) { 10441558Srgrimes if (ep->ex_fs.val[0] != fsb.f_fsid.val[0] || 10451558Srgrimes ep->ex_fs.val[1] != fsb.f_fsid.val[1]) { 10461558Srgrimes getexp_err(ep, tgrp); 10471558Srgrimes goto nextline; 10481558Srgrimes } 10491558Srgrimes } else { 10501558Srgrimes /* 10511558Srgrimes * See if this directory is already 10521558Srgrimes * in the list. 10531558Srgrimes */ 10541558Srgrimes ep = ex_search(&fsb.f_fsid); 10551558Srgrimes if (ep == (struct exportlist *)NULL) { 10561558Srgrimes ep = get_exp(); 10571558Srgrimes ep->ex_fs = fsb.f_fsid; 10581558Srgrimes ep->ex_fsdir = (char *) 10591558Srgrimes malloc(strlen(fsb.f_mntonname) + 1); 10601558Srgrimes if (ep->ex_fsdir) 10611558Srgrimes strcpy(ep->ex_fsdir, 10621558Srgrimes fsb.f_mntonname); 10631558Srgrimes else 10641558Srgrimes out_of_mem(); 10651558Srgrimes if (debug) 106674462Salfred warnx("making new ep fs=0x%x,0x%x", 106774462Salfred fsb.f_fsid.val[0], 106874462Salfred fsb.f_fsid.val[1]); 10691558Srgrimes } else if (debug) 107037663Scharnier warnx("found ep fs=0x%x,0x%x", 10711558Srgrimes fsb.f_fsid.val[0], 10721558Srgrimes fsb.f_fsid.val[1]); 10731558Srgrimes } 10741558Srgrimes 10751558Srgrimes /* 10761558Srgrimes * Add dirpath to export mount point. 10771558Srgrimes */ 10781558Srgrimes dirp = add_expdir(&dirhead, cp, len); 10791558Srgrimes dirplen = len; 10801558Srgrimes } else { 10811558Srgrimes getexp_err(ep, tgrp); 10821558Srgrimes goto nextline; 10831558Srgrimes } 10841558Srgrimes *endcp = savedc; 10851558Srgrimes } else { 10861558Srgrimes savedc = *endcp; 10871558Srgrimes *endcp = '\0'; 10881558Srgrimes got_nondir = 1; 10891558Srgrimes if (ep == (struct exportlist *)NULL) { 10901558Srgrimes getexp_err(ep, tgrp); 10911558Srgrimes goto nextline; 10921558Srgrimes } 10931558Srgrimes 10941558Srgrimes /* 10951558Srgrimes * Get the host or netgroup. 10961558Srgrimes */ 10971558Srgrimes setnetgrent(cp); 10981558Srgrimes netgrp = getnetgrent(&hst, &usr, &dom); 10991558Srgrimes do { 11001558Srgrimes if (has_host) { 11011558Srgrimes grp->gr_next = get_grp(); 11021558Srgrimes grp = grp->gr_next; 11031558Srgrimes } 11041558Srgrimes if (netgrp) { 110537003Sjoerg if (hst == 0) { 110637663Scharnier syslog(LOG_ERR, 110737663Scharnier "null hostname in netgroup %s, skipping", cp); 110837004Sjoerg grp->gr_type = GT_IGNORE; 110937003Sjoerg } else if (get_host(hst, grp, tgrp)) { 111037663Scharnier syslog(LOG_ERR, 111137663Scharnier "bad host %s in netgroup %s, skipping", hst, cp); 111229317Sjlemon grp->gr_type = GT_IGNORE; 11131558Srgrimes } 11147401Swpaul } else if (get_host(cp, grp, tgrp)) { 111537663Scharnier syslog(LOG_ERR, "bad host %s, skipping", cp); 111629317Sjlemon grp->gr_type = GT_IGNORE; 11171558Srgrimes } 11181558Srgrimes has_host = TRUE; 11191558Srgrimes } while (netgrp && getnetgrent(&hst, &usr, &dom)); 11201558Srgrimes endnetgrent(); 11211558Srgrimes *endcp = savedc; 11221558Srgrimes } 11231558Srgrimes cp = endcp; 11241558Srgrimes nextfield(&cp, &endcp); 11251558Srgrimes len = endcp - cp; 11261558Srgrimes } 11271558Srgrimes if (check_options(dirhead)) { 11281558Srgrimes getexp_err(ep, tgrp); 11291558Srgrimes goto nextline; 11301558Srgrimes } 11311558Srgrimes if (!has_host) { 113275641Siedowse grp->gr_type = GT_DEFAULT; 11331558Srgrimes if (debug) 113437663Scharnier warnx("adding a default entry"); 11351558Srgrimes 11361558Srgrimes /* 11371558Srgrimes * Don't allow a network export coincide with a list of 11381558Srgrimes * host(s) on the same line. 11391558Srgrimes */ 11401558Srgrimes } else if ((opt_flags & OP_NET) && tgrp->gr_next) { 114175801Siedowse syslog(LOG_ERR, "network/host conflict"); 11421558Srgrimes getexp_err(ep, tgrp); 11431558Srgrimes goto nextline; 114429317Sjlemon 114574462Salfred /* 114674462Salfred * If an export list was specified on this line, make sure 114729317Sjlemon * that we have at least one valid entry, otherwise skip it. 114829317Sjlemon */ 114929317Sjlemon } else { 115029317Sjlemon grp = tgrp; 115174462Salfred while (grp && grp->gr_type == GT_IGNORE) 115229317Sjlemon grp = grp->gr_next; 115329317Sjlemon if (! grp) { 115429317Sjlemon getexp_err(ep, tgrp); 115529317Sjlemon goto nextline; 115629317Sjlemon } 11571558Srgrimes } 11581558Srgrimes 11591558Srgrimes /* 11601558Srgrimes * Loop through hosts, pushing the exports into the kernel. 11611558Srgrimes * After loop, tgrp points to the start of the list and 11621558Srgrimes * grp points to the last entry in the list. 11631558Srgrimes */ 11641558Srgrimes grp = tgrp; 11651558Srgrimes do { 116675635Siedowse if (do_mount(ep, grp, exflags, &anon, dirp, dirplen, 116775635Siedowse &fsb)) { 116875635Siedowse getexp_err(ep, tgrp); 116975635Siedowse goto nextline; 117075635Siedowse } 11711558Srgrimes } while (grp->gr_next && (grp = grp->gr_next)); 11721558Srgrimes 11731558Srgrimes /* 11741558Srgrimes * Success. Update the data structures. 11751558Srgrimes */ 11761558Srgrimes if (has_host) { 11779336Sdfr hang_dirp(dirhead, tgrp, ep, opt_flags); 11781558Srgrimes grp->gr_next = grphead; 11791558Srgrimes grphead = tgrp; 11801558Srgrimes } else { 11811558Srgrimes hang_dirp(dirhead, (struct grouplist *)NULL, ep, 11829336Sdfr opt_flags); 11831558Srgrimes free_grp(grp); 11841558Srgrimes } 11851558Srgrimes dirhead = (struct dirlist *)NULL; 11861558Srgrimes if ((ep->ex_flag & EX_LINKED) == 0) { 11871558Srgrimes ep2 = exphead; 11881558Srgrimes epp = &exphead; 11891558Srgrimes 11901558Srgrimes /* 11911558Srgrimes * Insert in the list in alphabetical order. 11921558Srgrimes */ 11931558Srgrimes while (ep2 && strcmp(ep2->ex_fsdir, ep->ex_fsdir) < 0) { 11941558Srgrimes epp = &ep2->ex_next; 11951558Srgrimes ep2 = ep2->ex_next; 11961558Srgrimes } 11971558Srgrimes if (ep2) 11981558Srgrimes ep->ex_next = ep2; 11991558Srgrimes *epp = ep; 12001558Srgrimes ep->ex_flag |= EX_LINKED; 12011558Srgrimes } 12021558Srgrimesnextline: 12031558Srgrimes if (dirhead) { 12041558Srgrimes free_dir(dirhead); 12051558Srgrimes dirhead = (struct dirlist *)NULL; 12061558Srgrimes } 12071558Srgrimes } 12081558Srgrimes fclose(exp_file); 12091558Srgrimes} 12101558Srgrimes 12111558Srgrimes/* 12121558Srgrimes * Allocate an export list element 12131558Srgrimes */ 12141558Srgrimesstruct exportlist * 12151558Srgrimesget_exp() 12161558Srgrimes{ 12171558Srgrimes struct exportlist *ep; 12181558Srgrimes 12191558Srgrimes ep = (struct exportlist *)malloc(sizeof (struct exportlist)); 12201558Srgrimes if (ep == (struct exportlist *)NULL) 12211558Srgrimes out_of_mem(); 122223681Speter memset(ep, 0, sizeof(struct exportlist)); 12231558Srgrimes return (ep); 12241558Srgrimes} 12251558Srgrimes 12261558Srgrimes/* 12271558Srgrimes * Allocate a group list element 12281558Srgrimes */ 12291558Srgrimesstruct grouplist * 12301558Srgrimesget_grp() 12311558Srgrimes{ 12321558Srgrimes struct grouplist *gp; 12331558Srgrimes 12341558Srgrimes gp = (struct grouplist *)malloc(sizeof (struct grouplist)); 12351558Srgrimes if (gp == (struct grouplist *)NULL) 12361558Srgrimes out_of_mem(); 123723681Speter memset(gp, 0, sizeof(struct grouplist)); 12381558Srgrimes return (gp); 12391558Srgrimes} 12401558Srgrimes 12411558Srgrimes/* 12421558Srgrimes * Clean up upon an error in get_exportlist(). 12431558Srgrimes */ 12441558Srgrimesvoid 12451558Srgrimesgetexp_err(ep, grp) 12461558Srgrimes struct exportlist *ep; 12471558Srgrimes struct grouplist *grp; 12481558Srgrimes{ 12491558Srgrimes struct grouplist *tgrp; 12501558Srgrimes 1251100336Sjoerg if (!(opt_flags & OP_QUIET)) 1252100336Sjoerg syslog(LOG_ERR, "bad exports list line %s", line); 12531558Srgrimes if (ep && (ep->ex_flag & EX_LINKED) == 0) 12541558Srgrimes free_exp(ep); 12551558Srgrimes while (grp) { 12561558Srgrimes tgrp = grp; 12571558Srgrimes grp = grp->gr_next; 12581558Srgrimes free_grp(tgrp); 12591558Srgrimes } 12601558Srgrimes} 12611558Srgrimes 12621558Srgrimes/* 12631558Srgrimes * Search the export list for a matching fs. 12641558Srgrimes */ 12651558Srgrimesstruct exportlist * 12661558Srgrimesex_search(fsid) 12671558Srgrimes fsid_t *fsid; 12681558Srgrimes{ 12691558Srgrimes struct exportlist *ep; 12701558Srgrimes 12711558Srgrimes ep = exphead; 12721558Srgrimes while (ep) { 12731558Srgrimes if (ep->ex_fs.val[0] == fsid->val[0] && 12741558Srgrimes ep->ex_fs.val[1] == fsid->val[1]) 12751558Srgrimes return (ep); 12761558Srgrimes ep = ep->ex_next; 12771558Srgrimes } 12781558Srgrimes return (ep); 12791558Srgrimes} 12801558Srgrimes 12811558Srgrimes/* 12821558Srgrimes * Add a directory path to the list. 12831558Srgrimes */ 12841558Srgrimeschar * 12851558Srgrimesadd_expdir(dpp, cp, len) 12861558Srgrimes struct dirlist **dpp; 12871558Srgrimes char *cp; 12881558Srgrimes int len; 12891558Srgrimes{ 12901558Srgrimes struct dirlist *dp; 12911558Srgrimes 12921558Srgrimes dp = (struct dirlist *)malloc(sizeof (struct dirlist) + len); 129337663Scharnier if (dp == (struct dirlist *)NULL) 129437663Scharnier out_of_mem(); 12951558Srgrimes dp->dp_left = *dpp; 12961558Srgrimes dp->dp_right = (struct dirlist *)NULL; 12971558Srgrimes dp->dp_flag = 0; 12981558Srgrimes dp->dp_hosts = (struct hostlist *)NULL; 12991558Srgrimes strcpy(dp->dp_dirp, cp); 13001558Srgrimes *dpp = dp; 13011558Srgrimes return (dp->dp_dirp); 13021558Srgrimes} 13031558Srgrimes 13041558Srgrimes/* 13051558Srgrimes * Hang the dir list element off the dirpath binary tree as required 13061558Srgrimes * and update the entry for host. 13071558Srgrimes */ 13081558Srgrimesvoid 13099336Sdfrhang_dirp(dp, grp, ep, flags) 13101558Srgrimes struct dirlist *dp; 13111558Srgrimes struct grouplist *grp; 13121558Srgrimes struct exportlist *ep; 13139336Sdfr int flags; 13141558Srgrimes{ 13151558Srgrimes struct hostlist *hp; 13161558Srgrimes struct dirlist *dp2; 13171558Srgrimes 13189336Sdfr if (flags & OP_ALLDIRS) { 13191558Srgrimes if (ep->ex_defdir) 13201558Srgrimes free((caddr_t)dp); 13211558Srgrimes else 13221558Srgrimes ep->ex_defdir = dp; 13239336Sdfr if (grp == (struct grouplist *)NULL) { 13241558Srgrimes ep->ex_defdir->dp_flag |= DP_DEFSET; 13259336Sdfr } else while (grp) { 13261558Srgrimes hp = get_ht(); 13271558Srgrimes hp->ht_grp = grp; 13281558Srgrimes hp->ht_next = ep->ex_defdir->dp_hosts; 13291558Srgrimes ep->ex_defdir->dp_hosts = hp; 13301558Srgrimes grp = grp->gr_next; 13311558Srgrimes } 13321558Srgrimes } else { 13331558Srgrimes 13341558Srgrimes /* 133537663Scharnier * Loop through the directories adding them to the tree. 13361558Srgrimes */ 13371558Srgrimes while (dp) { 13381558Srgrimes dp2 = dp->dp_left; 13399336Sdfr add_dlist(&ep->ex_dirl, dp, grp, flags); 13401558Srgrimes dp = dp2; 13411558Srgrimes } 13421558Srgrimes } 13431558Srgrimes} 13441558Srgrimes 13451558Srgrimes/* 13461558Srgrimes * Traverse the binary tree either updating a node that is already there 13471558Srgrimes * for the new directory or adding the new node. 13481558Srgrimes */ 13491558Srgrimesvoid 13509336Sdfradd_dlist(dpp, newdp, grp, flags) 13511558Srgrimes struct dirlist **dpp; 13521558Srgrimes struct dirlist *newdp; 13531558Srgrimes struct grouplist *grp; 13549336Sdfr int flags; 13551558Srgrimes{ 13561558Srgrimes struct dirlist *dp; 13571558Srgrimes struct hostlist *hp; 13581558Srgrimes int cmp; 13591558Srgrimes 13601558Srgrimes dp = *dpp; 13611558Srgrimes if (dp) { 13621558Srgrimes cmp = strcmp(dp->dp_dirp, newdp->dp_dirp); 13631558Srgrimes if (cmp > 0) { 13649336Sdfr add_dlist(&dp->dp_left, newdp, grp, flags); 13651558Srgrimes return; 13661558Srgrimes } else if (cmp < 0) { 13679336Sdfr add_dlist(&dp->dp_right, newdp, grp, flags); 13681558Srgrimes return; 13691558Srgrimes } else 13701558Srgrimes free((caddr_t)newdp); 13711558Srgrimes } else { 13721558Srgrimes dp = newdp; 13731558Srgrimes dp->dp_left = (struct dirlist *)NULL; 13741558Srgrimes *dpp = dp; 13751558Srgrimes } 13761558Srgrimes if (grp) { 13771558Srgrimes 13781558Srgrimes /* 13791558Srgrimes * Hang all of the host(s) off of the directory point. 13801558Srgrimes */ 13811558Srgrimes do { 13821558Srgrimes hp = get_ht(); 13831558Srgrimes hp->ht_grp = grp; 13841558Srgrimes hp->ht_next = dp->dp_hosts; 13851558Srgrimes dp->dp_hosts = hp; 13861558Srgrimes grp = grp->gr_next; 13871558Srgrimes } while (grp); 13889336Sdfr } else { 13891558Srgrimes dp->dp_flag |= DP_DEFSET; 13909336Sdfr } 13911558Srgrimes} 13921558Srgrimes 13931558Srgrimes/* 13941558Srgrimes * Search for a dirpath on the export point. 13951558Srgrimes */ 13961558Srgrimesstruct dirlist * 139774462Salfreddirp_search(dp, dirp) 13981558Srgrimes struct dirlist *dp; 139974462Salfred char *dirp; 14001558Srgrimes{ 14011558Srgrimes int cmp; 14021558Srgrimes 14031558Srgrimes if (dp) { 140474462Salfred cmp = strcmp(dp->dp_dirp, dirp); 14051558Srgrimes if (cmp > 0) 140674462Salfred return (dirp_search(dp->dp_left, dirp)); 14071558Srgrimes else if (cmp < 0) 140874462Salfred return (dirp_search(dp->dp_right, dirp)); 14091558Srgrimes else 14101558Srgrimes return (dp); 14111558Srgrimes } 14121558Srgrimes return (dp); 14131558Srgrimes} 14141558Srgrimes 14151558Srgrimes/* 14161558Srgrimes * Scan for a host match in a directory tree. 14171558Srgrimes */ 14181558Srgrimesint 14199336Sdfrchk_host(dp, saddr, defsetp, hostsetp) 14201558Srgrimes struct dirlist *dp; 142174462Salfred struct sockaddr *saddr; 14221558Srgrimes int *defsetp; 14239336Sdfr int *hostsetp; 14241558Srgrimes{ 14251558Srgrimes struct hostlist *hp; 14261558Srgrimes struct grouplist *grp; 142774462Salfred struct addrinfo *ai; 14281558Srgrimes 14291558Srgrimes if (dp) { 14301558Srgrimes if (dp->dp_flag & DP_DEFSET) 14319336Sdfr *defsetp = dp->dp_flag; 14321558Srgrimes hp = dp->dp_hosts; 14331558Srgrimes while (hp) { 14341558Srgrimes grp = hp->ht_grp; 14351558Srgrimes switch (grp->gr_type) { 14361558Srgrimes case GT_HOST: 143774462Salfred ai = grp->gr_ptr.gt_addrinfo; 143874462Salfred for (; ai; ai = ai->ai_next) { 143975801Siedowse if (!sacmp(ai->ai_addr, saddr, NULL)) { 144074462Salfred *hostsetp = 144174462Salfred (hp->ht_flag | DP_HOSTSET); 144274462Salfred return (1); 144374462Salfred } 14449336Sdfr } 144575801Siedowse break; 14461558Srgrimes case GT_NET: 144775801Siedowse if (!sacmp(saddr, (struct sockaddr *) 144875801Siedowse &grp->gr_ptr.gt_net.nt_net, 144975801Siedowse (struct sockaddr *) 145075801Siedowse &grp->gr_ptr.gt_net.nt_mask)) { 145174462Salfred *hostsetp = (hp->ht_flag | DP_HOSTSET); 145274462Salfred return (1); 145374462Salfred } 145475801Siedowse break; 145575801Siedowse } 14561558Srgrimes hp = hp->ht_next; 14571558Srgrimes } 14581558Srgrimes } 14591558Srgrimes return (0); 14601558Srgrimes} 14611558Srgrimes 14621558Srgrimes/* 14631558Srgrimes * Scan tree for a host that matches the address. 14641558Srgrimes */ 14651558Srgrimesint 14661558Srgrimesscan_tree(dp, saddr) 14671558Srgrimes struct dirlist *dp; 146874462Salfred struct sockaddr *saddr; 14691558Srgrimes{ 14709336Sdfr int defset, hostset; 14711558Srgrimes 14721558Srgrimes if (dp) { 14731558Srgrimes if (scan_tree(dp->dp_left, saddr)) 14741558Srgrimes return (1); 14759336Sdfr if (chk_host(dp, saddr, &defset, &hostset)) 14761558Srgrimes return (1); 14771558Srgrimes if (scan_tree(dp->dp_right, saddr)) 14781558Srgrimes return (1); 14791558Srgrimes } 14801558Srgrimes return (0); 14811558Srgrimes} 14821558Srgrimes 14831558Srgrimes/* 14841558Srgrimes * Traverse the dirlist tree and free it up. 14851558Srgrimes */ 14861558Srgrimesvoid 14871558Srgrimesfree_dir(dp) 14881558Srgrimes struct dirlist *dp; 14891558Srgrimes{ 14901558Srgrimes 14911558Srgrimes if (dp) { 14921558Srgrimes free_dir(dp->dp_left); 14931558Srgrimes free_dir(dp->dp_right); 14941558Srgrimes free_host(dp->dp_hosts); 14951558Srgrimes free((caddr_t)dp); 14961558Srgrimes } 14971558Srgrimes} 14981558Srgrimes 14991558Srgrimes/* 15001558Srgrimes * Parse the option string and update fields. 15011558Srgrimes * Option arguments may either be -<option>=<value> or 15021558Srgrimes * -<option> <value> 15031558Srgrimes */ 15041558Srgrimesint 15051558Srgrimesdo_opt(cpp, endcpp, ep, grp, has_hostp, exflagsp, cr) 15061558Srgrimes char **cpp, **endcpp; 15071558Srgrimes struct exportlist *ep; 15081558Srgrimes struct grouplist *grp; 15091558Srgrimes int *has_hostp; 15101558Srgrimes int *exflagsp; 151172650Sgreen struct xucred *cr; 15121558Srgrimes{ 15131558Srgrimes char *cpoptarg, *cpoptend; 15141558Srgrimes char *cp, *endcp, *cpopt, savedc, savedc2; 15151558Srgrimes int allflag, usedarg; 15161558Srgrimes 151751968Salfred savedc2 = '\0'; 15181558Srgrimes cpopt = *cpp; 15191558Srgrimes cpopt++; 15201558Srgrimes cp = *endcpp; 15211558Srgrimes savedc = *cp; 15221558Srgrimes *cp = '\0'; 15231558Srgrimes while (cpopt && *cpopt) { 15241558Srgrimes allflag = 1; 15251558Srgrimes usedarg = -2; 152637663Scharnier if ((cpoptend = strchr(cpopt, ','))) { 15271558Srgrimes *cpoptend++ = '\0'; 152837663Scharnier if ((cpoptarg = strchr(cpopt, '='))) 15291558Srgrimes *cpoptarg++ = '\0'; 15301558Srgrimes } else { 153137663Scharnier if ((cpoptarg = strchr(cpopt, '='))) 15321558Srgrimes *cpoptarg++ = '\0'; 15331558Srgrimes else { 15341558Srgrimes *cp = savedc; 15351558Srgrimes nextfield(&cp, &endcp); 15361558Srgrimes **endcpp = '\0'; 15371558Srgrimes if (endcp > cp && *cp != '-') { 15381558Srgrimes cpoptarg = cp; 15391558Srgrimes savedc2 = *endcp; 15401558Srgrimes *endcp = '\0'; 15411558Srgrimes usedarg = 0; 15421558Srgrimes } 15431558Srgrimes } 15441558Srgrimes } 15451558Srgrimes if (!strcmp(cpopt, "ro") || !strcmp(cpopt, "o")) { 15461558Srgrimes *exflagsp |= MNT_EXRDONLY; 15471558Srgrimes } else if (cpoptarg && (!strcmp(cpopt, "maproot") || 15481558Srgrimes !(allflag = strcmp(cpopt, "mapall")) || 15491558Srgrimes !strcmp(cpopt, "root") || !strcmp(cpopt, "r"))) { 15501558Srgrimes usedarg++; 15511558Srgrimes parsecred(cpoptarg, cr); 15521558Srgrimes if (allflag == 0) { 15531558Srgrimes *exflagsp |= MNT_EXPORTANON; 15541558Srgrimes opt_flags |= OP_MAPALL; 15551558Srgrimes } else 15561558Srgrimes opt_flags |= OP_MAPROOT; 15571558Srgrimes } else if (cpoptarg && (!strcmp(cpopt, "mask") || 155875801Siedowse !strcmp(cpopt, "m"))) { 15591558Srgrimes if (get_net(cpoptarg, &grp->gr_ptr.gt_net, 1)) { 156037663Scharnier syslog(LOG_ERR, "bad mask: %s", cpoptarg); 15611558Srgrimes return (1); 15621558Srgrimes } 15631558Srgrimes usedarg++; 15641558Srgrimes opt_flags |= OP_MASK; 15651558Srgrimes } else if (cpoptarg && (!strcmp(cpopt, "network") || 15661558Srgrimes !strcmp(cpopt, "n"))) { 156774462Salfred if (strchr(cpoptarg, '/') != NULL) { 156874462Salfred if (debug) 156974462Salfred fprintf(stderr, "setting OP_MASKLEN\n"); 157074462Salfred opt_flags |= OP_MASKLEN; 157174462Salfred } 15721558Srgrimes if (grp->gr_type != GT_NULL) { 157337663Scharnier syslog(LOG_ERR, "network/host conflict"); 15741558Srgrimes return (1); 15751558Srgrimes } else if (get_net(cpoptarg, &grp->gr_ptr.gt_net, 0)) { 157637663Scharnier syslog(LOG_ERR, "bad net: %s", cpoptarg); 15771558Srgrimes return (1); 15781558Srgrimes } 15791558Srgrimes grp->gr_type = GT_NET; 15801558Srgrimes *has_hostp = 1; 15811558Srgrimes usedarg++; 15821558Srgrimes opt_flags |= OP_NET; 15831558Srgrimes } else if (!strcmp(cpopt, "alldirs")) { 15841558Srgrimes opt_flags |= OP_ALLDIRS; 158527447Sdfr } else if (!strcmp(cpopt, "public")) { 158627447Sdfr *exflagsp |= MNT_EXPUBLIC; 158727447Sdfr } else if (!strcmp(cpopt, "webnfs")) { 158827447Sdfr *exflagsp |= (MNT_EXPUBLIC|MNT_EXRDONLY|MNT_EXPORTANON); 158927447Sdfr opt_flags |= OP_MAPALL; 159027447Sdfr } else if (cpoptarg && !strcmp(cpopt, "index")) { 159127447Sdfr ep->ex_indexfile = strdup(cpoptarg); 1592100336Sjoerg } else if (!strcmp(cpopt, "quiet")) { 1593100336Sjoerg opt_flags |= OP_QUIET; 15941558Srgrimes } else { 159537663Scharnier syslog(LOG_ERR, "bad opt %s", cpopt); 15961558Srgrimes return (1); 15971558Srgrimes } 15981558Srgrimes if (usedarg >= 0) { 15991558Srgrimes *endcp = savedc2; 16001558Srgrimes **endcpp = savedc; 16011558Srgrimes if (usedarg > 0) { 16021558Srgrimes *cpp = cp; 16031558Srgrimes *endcpp = endcp; 16041558Srgrimes } 16051558Srgrimes return (0); 16061558Srgrimes } 16071558Srgrimes cpopt = cpoptend; 16081558Srgrimes } 16091558Srgrimes **endcpp = savedc; 16101558Srgrimes return (0); 16111558Srgrimes} 16121558Srgrimes 16131558Srgrimes/* 16141558Srgrimes * Translate a character string to the corresponding list of network 16151558Srgrimes * addresses for a hostname. 16161558Srgrimes */ 16171558Srgrimesint 16187401Swpaulget_host(cp, grp, tgrp) 16191558Srgrimes char *cp; 16201558Srgrimes struct grouplist *grp; 16217401Swpaul struct grouplist *tgrp; 16221558Srgrimes{ 16237401Swpaul struct grouplist *checkgrp; 162475635Siedowse struct addrinfo *ai, *tai, hints; 162574462Salfred int ecode; 162674462Salfred char host[NI_MAXHOST]; 16271558Srgrimes 162874462Salfred if (grp->gr_type != GT_NULL) { 162974462Salfred syslog(LOG_ERR, "Bad netgroup type for ip host %s", cp); 16301558Srgrimes return (1); 16311558Srgrimes } 163274462Salfred memset(&hints, 0, sizeof hints); 163374462Salfred hints.ai_flags = AI_CANONNAME; 163474462Salfred hints.ai_protocol = IPPROTO_UDP; 163574462Salfred ecode = getaddrinfo(cp, NULL, &hints, &ai); 163674462Salfred if (ecode != 0) { 163775635Siedowse syslog(LOG_ERR,"can't get address info for host %s", cp); 163874462Salfred return 1; 163974462Salfred } 164074462Salfred grp->gr_ptr.gt_addrinfo = ai; 164174462Salfred while (ai != NULL) { 164274462Salfred if (ai->ai_canonname == NULL) { 164374462Salfred if (getnameinfo(ai->ai_addr, ai->ai_addrlen, host, 164474462Salfred sizeof host, NULL, 0, ninumeric) != 0) 164574462Salfred strlcpy(host, "?", sizeof(host)); 164674462Salfred ai->ai_canonname = strdup(host); 164774462Salfred ai->ai_flags |= AI_CANONNAME; 164875641Siedowse } 164974462Salfred if (debug) 165075635Siedowse fprintf(stderr, "got host %s\n", ai->ai_canonname); 165175635Siedowse /* 165275635Siedowse * Sanity check: make sure we don't already have an entry 165375635Siedowse * for this host in the grouplist. 165475635Siedowse */ 165575635Siedowse for (checkgrp = tgrp; checkgrp != NULL; 165675635Siedowse checkgrp = checkgrp->gr_next) { 165775635Siedowse if (checkgrp->gr_type != GT_HOST) 165875635Siedowse continue; 165975635Siedowse for (tai = checkgrp->gr_ptr.gt_addrinfo; tai != NULL; 166075635Siedowse tai = tai->ai_next) { 166175801Siedowse if (sacmp(tai->ai_addr, ai->ai_addr, NULL) != 0) 166275635Siedowse continue; 166375635Siedowse if (debug) 166475635Siedowse fprintf(stderr, 166575635Siedowse "ignoring duplicate host %s\n", 166675635Siedowse ai->ai_canonname); 166775635Siedowse grp->gr_type = GT_IGNORE; 166875635Siedowse return (0); 166975635Siedowse } 167075635Siedowse } 167174462Salfred ai = ai->ai_next; 16721558Srgrimes } 167375635Siedowse grp->gr_type = GT_HOST; 16741558Srgrimes return (0); 16751558Srgrimes} 16761558Srgrimes 16771558Srgrimes/* 16781558Srgrimes * Free up an exports list component 16791558Srgrimes */ 16801558Srgrimesvoid 16811558Srgrimesfree_exp(ep) 16821558Srgrimes struct exportlist *ep; 16831558Srgrimes{ 16841558Srgrimes 16851558Srgrimes if (ep->ex_defdir) { 16861558Srgrimes free_host(ep->ex_defdir->dp_hosts); 16871558Srgrimes free((caddr_t)ep->ex_defdir); 16881558Srgrimes } 16891558Srgrimes if (ep->ex_fsdir) 16901558Srgrimes free(ep->ex_fsdir); 169127447Sdfr if (ep->ex_indexfile) 169227447Sdfr free(ep->ex_indexfile); 16931558Srgrimes free_dir(ep->ex_dirl); 16941558Srgrimes free((caddr_t)ep); 16951558Srgrimes} 16961558Srgrimes 16971558Srgrimes/* 16981558Srgrimes * Free hosts. 16991558Srgrimes */ 17001558Srgrimesvoid 17011558Srgrimesfree_host(hp) 17021558Srgrimes struct hostlist *hp; 17031558Srgrimes{ 17041558Srgrimes struct hostlist *hp2; 17051558Srgrimes 17061558Srgrimes while (hp) { 17071558Srgrimes hp2 = hp; 17081558Srgrimes hp = hp->ht_next; 17091558Srgrimes free((caddr_t)hp2); 17101558Srgrimes } 17111558Srgrimes} 17121558Srgrimes 17131558Srgrimesstruct hostlist * 17141558Srgrimesget_ht() 17151558Srgrimes{ 17161558Srgrimes struct hostlist *hp; 17171558Srgrimes 17181558Srgrimes hp = (struct hostlist *)malloc(sizeof (struct hostlist)); 17191558Srgrimes if (hp == (struct hostlist *)NULL) 17201558Srgrimes out_of_mem(); 17211558Srgrimes hp->ht_next = (struct hostlist *)NULL; 17229336Sdfr hp->ht_flag = 0; 17231558Srgrimes return (hp); 17241558Srgrimes} 17251558Srgrimes 17261558Srgrimes/* 17271558Srgrimes * Out of memory, fatal 17281558Srgrimes */ 17291558Srgrimesvoid 17301558Srgrimesout_of_mem() 17311558Srgrimes{ 17321558Srgrimes 173337663Scharnier syslog(LOG_ERR, "out of memory"); 17341558Srgrimes exit(2); 17351558Srgrimes} 17361558Srgrimes 17371558Srgrimes/* 17381558Srgrimes * Do the mount syscall with the update flag to push the export info into 17391558Srgrimes * the kernel. 17401558Srgrimes */ 17411558Srgrimesint 17421558Srgrimesdo_mount(ep, grp, exflags, anoncrp, dirp, dirplen, fsb) 17431558Srgrimes struct exportlist *ep; 17441558Srgrimes struct grouplist *grp; 17451558Srgrimes int exflags; 174672650Sgreen struct xucred *anoncrp; 17471558Srgrimes char *dirp; 17481558Srgrimes int dirplen; 17491558Srgrimes struct statfs *fsb; 17501558Srgrimes{ 175175841Siedowse struct statfs fsb1; 175274462Salfred struct addrinfo *ai; 175375801Siedowse struct export_args *eap; 175474462Salfred char *cp = NULL; 17551558Srgrimes int done; 17561558Srgrimes char savedc = '\0'; 17571558Srgrimes union { 17581558Srgrimes struct ufs_args ua; 17591558Srgrimes struct iso_args ia; 17609336Sdfr struct msdosfs_args da; 176154093Ssemenu struct ntfs_args na; 17621558Srgrimes } args; 17631558Srgrimes 176475801Siedowse bzero(&args, sizeof args); 176575801Siedowse /* XXX, we assume that all xx_args look like ufs_args. */ 17661558Srgrimes args.ua.fspec = 0; 176775801Siedowse eap = &args.ua.export; 176875801Siedowse 176975801Siedowse eap->ex_flags = exflags; 177075801Siedowse eap->ex_anon = *anoncrp; 177175801Siedowse eap->ex_indexfile = ep->ex_indexfile; 177275641Siedowse if (grp->gr_type == GT_HOST) 177374462Salfred ai = grp->gr_ptr.gt_addrinfo; 177475641Siedowse else 177575641Siedowse ai = NULL; 17761558Srgrimes done = FALSE; 17771558Srgrimes while (!done) { 17781558Srgrimes switch (grp->gr_type) { 17791558Srgrimes case GT_HOST: 178075641Siedowse if (ai->ai_addr->sa_family == AF_INET6 && have_v6 == 0) 178174462Salfred goto skip; 178275801Siedowse eap->ex_addr = ai->ai_addr; 178375801Siedowse eap->ex_addrlen = ai->ai_addrlen; 178475801Siedowse eap->ex_masklen = 0; 17851558Srgrimes break; 17861558Srgrimes case GT_NET: 178775801Siedowse if (grp->gr_ptr.gt_net.nt_net.ss_family == AF_INET6 && 178874462Salfred have_v6 == 0) 178974462Salfred goto skip; 179075801Siedowse eap->ex_addr = 179175801Siedowse (struct sockaddr *)&grp->gr_ptr.gt_net.nt_net; 179275801Siedowse eap->ex_addrlen = args.ua.export.ex_addr->sa_len; 179375801Siedowse eap->ex_mask = 179475801Siedowse (struct sockaddr *)&grp->gr_ptr.gt_net.nt_mask; 179575801Siedowse eap->ex_masklen = args.ua.export.ex_mask->sa_len; 17961558Srgrimes break; 179775641Siedowse case GT_DEFAULT: 179875801Siedowse eap->ex_addr = NULL; 179975801Siedowse eap->ex_addrlen = 0; 180075801Siedowse eap->ex_mask = NULL; 180175801Siedowse eap->ex_masklen = 0; 180275641Siedowse break; 18037401Swpaul case GT_IGNORE: 18047401Swpaul return(0); 18057401Swpaul break; 18061558Srgrimes default: 180737663Scharnier syslog(LOG_ERR, "bad grouptype"); 18081558Srgrimes if (cp) 18091558Srgrimes *cp = savedc; 18101558Srgrimes return (1); 18111558Srgrimes }; 18121558Srgrimes 18131558Srgrimes /* 18141558Srgrimes * XXX: 18151558Srgrimes * Maybe I should just use the fsb->f_mntonname path instead 18161558Srgrimes * of looping back up the dirp to the mount point?? 18171558Srgrimes * Also, needs to know how to export all types of local 181896707Strhodes * exportable filesystems and not just "ufs". 18191558Srgrimes */ 18209336Sdfr while (mount(fsb->f_fstypename, dirp, 182174462Salfred fsb->f_flags | MNT_UPDATE, (caddr_t)&args) < 0) { 18221558Srgrimes if (cp) 18231558Srgrimes *cp-- = savedc; 18241558Srgrimes else 18251558Srgrimes cp = dirp + dirplen - 1; 1826100336Sjoerg if (opt_flags & OP_QUIET) 1827100336Sjoerg return (1); 18281558Srgrimes if (errno == EPERM) { 182975635Siedowse if (debug) 183075635Siedowse warnx("can't change attributes for %s", 183175635Siedowse dirp); 18321558Srgrimes syslog(LOG_ERR, 183337663Scharnier "can't change attributes for %s", dirp); 18341558Srgrimes return (1); 18351558Srgrimes } 18361558Srgrimes if (opt_flags & OP_ALLDIRS) { 1837100336Sjoerg if (errno == EINVAL) 1838100336Sjoerg syslog(LOG_ERR, 1839100336Sjoerg "-alldirs requested but %s is not a filesystem mountpoint", 1840100336Sjoerg dirp); 1841100336Sjoerg else 1842100336Sjoerg syslog(LOG_ERR, 1843100336Sjoerg "could not remount %s: %m", 1844100336Sjoerg dirp); 18451558Srgrimes return (1); 18461558Srgrimes } 18471558Srgrimes /* back up over the last component */ 18481558Srgrimes while (*cp == '/' && cp > dirp) 18491558Srgrimes cp--; 18501558Srgrimes while (*(cp - 1) != '/' && cp > dirp) 18511558Srgrimes cp--; 18521558Srgrimes if (cp == dirp) { 18531558Srgrimes if (debug) 185437663Scharnier warnx("mnt unsucc"); 185537663Scharnier syslog(LOG_ERR, "can't export %s", dirp); 18561558Srgrimes return (1); 18571558Srgrimes } 18581558Srgrimes savedc = *cp; 18591558Srgrimes *cp = '\0'; 186075841Siedowse /* Check that we're still on the same filesystem. */ 186175841Siedowse if (statfs(dirp, &fsb1) != 0 || bcmp(&fsb1.f_fsid, 186275841Siedowse &fsb->f_fsid, sizeof(fsb1.f_fsid)) != 0) { 186375841Siedowse *cp = savedc; 186475841Siedowse syslog(LOG_ERR, "can't export %s", dirp); 186575841Siedowse return (1); 186675841Siedowse } 18671558Srgrimes } 186874462Salfredskip: 186975641Siedowse if (ai != NULL) 187074462Salfred ai = ai->ai_next; 187175641Siedowse if (ai == NULL) 18721558Srgrimes done = TRUE; 18731558Srgrimes } 18741558Srgrimes if (cp) 18751558Srgrimes *cp = savedc; 18761558Srgrimes return (0); 18771558Srgrimes} 18781558Srgrimes 18791558Srgrimes/* 18801558Srgrimes * Translate a net address. 188175801Siedowse * 188275801Siedowse * If `maskflg' is nonzero, then `cp' is a netmask, not a network address. 18831558Srgrimes */ 18841558Srgrimesint 18851558Srgrimesget_net(cp, net, maskflg) 18861558Srgrimes char *cp; 18871558Srgrimes struct netmsk *net; 18881558Srgrimes int maskflg; 18891558Srgrimes{ 189075861Siedowse struct netent *np = NULL; 189174462Salfred char *name, *p, *prefp; 189275801Siedowse struct sockaddr_in sin; 189375861Siedowse struct sockaddr *sa = NULL; 189474462Salfred struct addrinfo hints, *ai = NULL; 189574462Salfred char netname[NI_MAXHOST]; 189674462Salfred long preflen; 18971558Srgrimes 189875635Siedowse p = prefp = NULL; 189974462Salfred if ((opt_flags & OP_MASKLEN) && !maskflg) { 190074462Salfred p = strchr(cp, '/'); 190174462Salfred *p = '\0'; 190274462Salfred prefp = p + 1; 190374462Salfred } 190474462Salfred 190575861Siedowse /* 190675861Siedowse * Check for a numeric address first. We wish to avoid 190775861Siedowse * possible DNS lookups in getnetbyname(). 190875861Siedowse */ 190975861Siedowse if (isxdigit(*cp) || *cp == ':') { 191074462Salfred memset(&hints, 0, sizeof hints); 191175801Siedowse /* Ensure the mask and the network have the same family. */ 191275801Siedowse if (maskflg && (opt_flags & OP_NET)) 191375801Siedowse hints.ai_family = net->nt_net.ss_family; 191475801Siedowse else if (!maskflg && (opt_flags & OP_HAVEMASK)) 191575801Siedowse hints.ai_family = net->nt_mask.ss_family; 191675801Siedowse else 191775801Siedowse hints.ai_family = AF_UNSPEC; 191874462Salfred hints.ai_flags = AI_NUMERICHOST; 191975861Siedowse if (getaddrinfo(cp, NULL, &hints, &ai) == 0) 192075861Siedowse sa = ai->ai_addr; 192175861Siedowse if (sa != NULL && ai->ai_family == AF_INET) { 192274462Salfred /* 192375801Siedowse * The address in `cp' is really a network address, so 192475801Siedowse * use inet_network() to re-interpret this correctly. 192575801Siedowse * e.g. "127.1" means 127.1.0.0, not 127.0.0.1. 192674462Salfred */ 192775801Siedowse bzero(&sin, sizeof sin); 192874462Salfred sin.sin_family = AF_INET; 192974462Salfred sin.sin_len = sizeof sin; 193075801Siedowse sin.sin_addr = inet_makeaddr(inet_network(cp), 0); 193174462Salfred if (debug) 193275801Siedowse fprintf(stderr, "get_net: v4 addr %s\n", 193375801Siedowse inet_ntoa(sin.sin_addr)); 193474462Salfred sa = (struct sockaddr *)&sin; 193575861Siedowse } 193675861Siedowse } 193775861Siedowse if (sa == NULL && (np = getnetbyname(cp)) != NULL) { 193875861Siedowse bzero(&sin, sizeof sin); 193975861Siedowse sin.sin_family = AF_INET; 194075861Siedowse sin.sin_len = sizeof sin; 194175861Siedowse sin.sin_addr = inet_makeaddr(np->n_net, 0); 194275861Siedowse sa = (struct sockaddr *)&sin; 194375861Siedowse } 194475861Siedowse if (sa == NULL) 194574462Salfred goto fail; 194625318Spst 194775801Siedowse if (maskflg) { 194875801Siedowse /* The specified sockaddr is a mask. */ 194975801Siedowse if (checkmask(sa) != 0) 195075801Siedowse goto fail; 195175801Siedowse bcopy(sa, &net->nt_mask, sa->sa_len); 195275801Siedowse opt_flags |= OP_HAVEMASK; 195375801Siedowse } else { 195475801Siedowse /* The specified sockaddr is a network address. */ 195575801Siedowse bcopy(sa, &net->nt_net, sa->sa_len); 195674462Salfred 195775801Siedowse /* Get a network name for the export list. */ 195875801Siedowse if (np) { 195975801Siedowse name = np->n_name; 196075801Siedowse } else if (getnameinfo(sa, sa->sa_len, netname, sizeof netname, 196175801Siedowse NULL, 0, ninumeric) == 0) { 196275801Siedowse name = netname; 196375801Siedowse } else { 196475801Siedowse goto fail; 196575801Siedowse } 196675801Siedowse if ((net->nt_name = strdup(name)) == NULL) 196775801Siedowse out_of_mem(); 196875801Siedowse 196975801Siedowse /* 197075801Siedowse * Extract a mask from either a "/<masklen>" suffix, or 197175801Siedowse * from the class of an IPv4 address. 197275801Siedowse */ 197374462Salfred if (opt_flags & OP_MASKLEN) { 197474462Salfred preflen = strtol(prefp, NULL, 10); 197575801Siedowse if (preflen < 0L || preflen == LONG_MAX) 197674462Salfred goto fail; 197775801Siedowse bcopy(sa, &net->nt_mask, sa->sa_len); 197875801Siedowse if (makemask(&net->nt_mask, (int)preflen) != 0) 197975801Siedowse goto fail; 198075801Siedowse opt_flags |= OP_HAVEMASK; 198174462Salfred *p = '/'; 198275801Siedowse } else if (sa->sa_family == AF_INET && 198375801Siedowse (opt_flags & OP_MASK) == 0) { 198475801Siedowse in_addr_t addr; 198574462Salfred 198675801Siedowse addr = ((struct sockaddr_in *)sa)->sin_addr.s_addr; 198775801Siedowse if (IN_CLASSA(addr)) 198875801Siedowse preflen = 8; 198975801Siedowse else if (IN_CLASSB(addr)) 199075801Siedowse preflen = 16; 199175801Siedowse else if (IN_CLASSC(addr)) 199275801Siedowse preflen = 24; 199375801Siedowse else if (IN_CLASSD(addr)) 199475801Siedowse preflen = 28; 199575801Siedowse else 199675801Siedowse preflen = 32; /* XXX */ 199775801Siedowse 199875801Siedowse bcopy(sa, &net->nt_mask, sa->sa_len); 199975801Siedowse makemask(&net->nt_mask, (int)preflen); 200075801Siedowse opt_flags |= OP_HAVEMASK; 200174462Salfred } 200274462Salfred } 200374462Salfred 200474462Salfred if (ai) 200574462Salfred freeaddrinfo(ai); 200674462Salfred return 0; 200774462Salfred 200874462Salfredfail: 200974462Salfred if (ai) 201074462Salfred freeaddrinfo(ai); 201174462Salfred return 1; 20121558Srgrimes} 20131558Srgrimes 20141558Srgrimes/* 20151558Srgrimes * Parse out the next white space separated field 20161558Srgrimes */ 20171558Srgrimesvoid 20181558Srgrimesnextfield(cp, endcp) 20191558Srgrimes char **cp; 20201558Srgrimes char **endcp; 20211558Srgrimes{ 20221558Srgrimes char *p; 20231558Srgrimes 20241558Srgrimes p = *cp; 20251558Srgrimes while (*p == ' ' || *p == '\t') 20261558Srgrimes p++; 20271558Srgrimes if (*p == '\n' || *p == '\0') 20281558Srgrimes *cp = *endcp = p; 20291558Srgrimes else { 20301558Srgrimes *cp = p++; 20311558Srgrimes while (*p != ' ' && *p != '\t' && *p != '\n' && *p != '\0') 20321558Srgrimes p++; 20331558Srgrimes *endcp = p; 20341558Srgrimes } 20351558Srgrimes} 20361558Srgrimes 20371558Srgrimes/* 20381558Srgrimes * Get an exports file line. Skip over blank lines and handle line 20391558Srgrimes * continuations. 20401558Srgrimes */ 20411558Srgrimesint 20421558Srgrimesget_line() 20431558Srgrimes{ 20441558Srgrimes char *p, *cp; 204596622Siedowse size_t len; 20461558Srgrimes int totlen, cont_line; 20471558Srgrimes 20481558Srgrimes /* 20491558Srgrimes * Loop around ignoring blank lines and getting all continuation lines. 20501558Srgrimes */ 20511558Srgrimes p = line; 20521558Srgrimes totlen = 0; 20531558Srgrimes do { 205496622Siedowse if ((p = fgetln(exp_file, &len)) == NULL) 20551558Srgrimes return (0); 20561558Srgrimes cp = p + len - 1; 20571558Srgrimes cont_line = 0; 20581558Srgrimes while (cp >= p && 20591558Srgrimes (*cp == ' ' || *cp == '\t' || *cp == '\n' || *cp == '\\')) { 20601558Srgrimes if (*cp == '\\') 20611558Srgrimes cont_line = 1; 20621558Srgrimes cp--; 20631558Srgrimes len--; 20641558Srgrimes } 206579117Sdd if (cont_line) { 206679117Sdd *++cp = ' '; 206779117Sdd len++; 206879117Sdd } 206996622Siedowse if (linesize < len + totlen + 1) { 207096622Siedowse linesize = len + totlen + 1; 207196622Siedowse line = realloc(line, linesize); 207296622Siedowse if (line == NULL) 207396622Siedowse out_of_mem(); 20741558Srgrimes } 207596622Siedowse memcpy(line + totlen, p, len); 207696622Siedowse totlen += len; 207796622Siedowse line[totlen] = '\0'; 20781558Srgrimes } while (totlen == 0 || cont_line); 20791558Srgrimes return (1); 20801558Srgrimes} 20811558Srgrimes 20821558Srgrimes/* 20831558Srgrimes * Parse a description of a credential. 20841558Srgrimes */ 20851558Srgrimesvoid 20861558Srgrimesparsecred(namelist, cr) 20871558Srgrimes char *namelist; 208872650Sgreen struct xucred *cr; 20891558Srgrimes{ 20901558Srgrimes char *name; 20911558Srgrimes int cnt; 20921558Srgrimes char *names; 20931558Srgrimes struct passwd *pw; 20941558Srgrimes struct group *gr; 20951558Srgrimes int ngroups, groups[NGROUPS + 1]; 20961558Srgrimes 209791354Sdd cr->cr_version = XUCRED_VERSION; 20981558Srgrimes /* 209937663Scharnier * Set up the unprivileged user. 21001558Srgrimes */ 21011558Srgrimes cr->cr_uid = -2; 21021558Srgrimes cr->cr_groups[0] = -2; 21031558Srgrimes cr->cr_ngroups = 1; 21041558Srgrimes /* 21051558Srgrimes * Get the user's password table entry. 21061558Srgrimes */ 21071558Srgrimes names = strsep(&namelist, " \t\n"); 21081558Srgrimes name = strsep(&names, ":"); 21091558Srgrimes if (isdigit(*name) || *name == '-') 21101558Srgrimes pw = getpwuid(atoi(name)); 21111558Srgrimes else 21121558Srgrimes pw = getpwnam(name); 21131558Srgrimes /* 21141558Srgrimes * Credentials specified as those of a user. 21151558Srgrimes */ 21161558Srgrimes if (names == NULL) { 21171558Srgrimes if (pw == NULL) { 211837663Scharnier syslog(LOG_ERR, "unknown user: %s", name); 21191558Srgrimes return; 21201558Srgrimes } 21211558Srgrimes cr->cr_uid = pw->pw_uid; 21221558Srgrimes ngroups = NGROUPS + 1; 21231558Srgrimes if (getgrouplist(pw->pw_name, pw->pw_gid, groups, &ngroups)) 212437663Scharnier syslog(LOG_ERR, "too many groups"); 21251558Srgrimes /* 21261558Srgrimes * Convert from int's to gid_t's and compress out duplicate 21271558Srgrimes */ 21281558Srgrimes cr->cr_ngroups = ngroups - 1; 21291558Srgrimes cr->cr_groups[0] = groups[0]; 21301558Srgrimes for (cnt = 2; cnt < ngroups; cnt++) 21311558Srgrimes cr->cr_groups[cnt - 1] = groups[cnt]; 21321558Srgrimes return; 21331558Srgrimes } 21341558Srgrimes /* 21351558Srgrimes * Explicit credential specified as a colon separated list: 21361558Srgrimes * uid:gid:gid:... 21371558Srgrimes */ 21381558Srgrimes if (pw != NULL) 21391558Srgrimes cr->cr_uid = pw->pw_uid; 21401558Srgrimes else if (isdigit(*name) || *name == '-') 21411558Srgrimes cr->cr_uid = atoi(name); 21421558Srgrimes else { 214337663Scharnier syslog(LOG_ERR, "unknown user: %s", name); 21441558Srgrimes return; 21451558Srgrimes } 21461558Srgrimes cr->cr_ngroups = 0; 21471558Srgrimes while (names != NULL && *names != '\0' && cr->cr_ngroups < NGROUPS) { 21481558Srgrimes name = strsep(&names, ":"); 21491558Srgrimes if (isdigit(*name) || *name == '-') { 21501558Srgrimes cr->cr_groups[cr->cr_ngroups++] = atoi(name); 21511558Srgrimes } else { 21521558Srgrimes if ((gr = getgrnam(name)) == NULL) { 215337663Scharnier syslog(LOG_ERR, "unknown group: %s", name); 21541558Srgrimes continue; 21551558Srgrimes } 21561558Srgrimes cr->cr_groups[cr->cr_ngroups++] = gr->gr_gid; 21571558Srgrimes } 21581558Srgrimes } 21591558Srgrimes if (names != NULL && *names != '\0' && cr->cr_ngroups == NGROUPS) 216037663Scharnier syslog(LOG_ERR, "too many groups"); 21611558Srgrimes} 21621558Srgrimes 21631558Srgrimes#define STRSIZ (RPCMNT_NAMELEN+RPCMNT_PATHLEN+50) 21641558Srgrimes/* 21651558Srgrimes * Routines that maintain the remote mounttab 21661558Srgrimes */ 21671558Srgrimesvoid 21681558Srgrimesget_mountlist() 21691558Srgrimes{ 21701558Srgrimes struct mountlist *mlp, **mlpp; 217123681Speter char *host, *dirp, *cp; 21721558Srgrimes char str[STRSIZ]; 21731558Srgrimes FILE *mlfile; 21741558Srgrimes 21751558Srgrimes if ((mlfile = fopen(_PATH_RMOUNTLIST, "r")) == NULL) { 217653117Sbillf if (errno == ENOENT) 217753117Sbillf return; 217853117Sbillf else { 217953117Sbillf syslog(LOG_ERR, "can't open %s", _PATH_RMOUNTLIST); 218053117Sbillf return; 218153117Sbillf } 21821558Srgrimes } 21831558Srgrimes mlpp = &mlhead; 21841558Srgrimes while (fgets(str, STRSIZ, mlfile) != NULL) { 218523681Speter cp = str; 218623681Speter host = strsep(&cp, " \t\n"); 218723681Speter dirp = strsep(&cp, " \t\n"); 218823681Speter if (host == NULL || dirp == NULL) 21891558Srgrimes continue; 21901558Srgrimes mlp = (struct mountlist *)malloc(sizeof (*mlp)); 219137663Scharnier if (mlp == (struct mountlist *)NULL) 219237663Scharnier out_of_mem(); 219323681Speter strncpy(mlp->ml_host, host, RPCMNT_NAMELEN); 219423681Speter mlp->ml_host[RPCMNT_NAMELEN] = '\0'; 219523681Speter strncpy(mlp->ml_dirp, dirp, RPCMNT_PATHLEN); 219623681Speter mlp->ml_dirp[RPCMNT_PATHLEN] = '\0'; 21971558Srgrimes mlp->ml_next = (struct mountlist *)NULL; 21981558Srgrimes *mlpp = mlp; 21991558Srgrimes mlpp = &mlp->ml_next; 22001558Srgrimes } 22011558Srgrimes fclose(mlfile); 22021558Srgrimes} 22031558Srgrimes 220475635Siedowsevoid 220575635Siedowsedel_mlist(char *hostp, char *dirp) 22061558Srgrimes{ 22071558Srgrimes struct mountlist *mlp, **mlpp; 22081558Srgrimes struct mountlist *mlp2; 22091558Srgrimes FILE *mlfile; 22101558Srgrimes int fnd = 0; 22111558Srgrimes 22121558Srgrimes mlpp = &mlhead; 22131558Srgrimes mlp = mlhead; 22141558Srgrimes while (mlp) { 22151558Srgrimes if (!strcmp(mlp->ml_host, hostp) && 22161558Srgrimes (!dirp || !strcmp(mlp->ml_dirp, dirp))) { 22171558Srgrimes fnd = 1; 22181558Srgrimes mlp2 = mlp; 22191558Srgrimes *mlpp = mlp = mlp->ml_next; 22201558Srgrimes free((caddr_t)mlp2); 22211558Srgrimes } else { 22221558Srgrimes mlpp = &mlp->ml_next; 22231558Srgrimes mlp = mlp->ml_next; 22241558Srgrimes } 22251558Srgrimes } 22261558Srgrimes if (fnd) { 22271558Srgrimes if ((mlfile = fopen(_PATH_RMOUNTLIST, "w")) == NULL) { 222837663Scharnier syslog(LOG_ERR,"can't update %s", _PATH_RMOUNTLIST); 22291558Srgrimes return; 22301558Srgrimes } 22311558Srgrimes mlp = mlhead; 22321558Srgrimes while (mlp) { 22331558Srgrimes fprintf(mlfile, "%s %s\n", mlp->ml_host, mlp->ml_dirp); 22341558Srgrimes mlp = mlp->ml_next; 22351558Srgrimes } 22361558Srgrimes fclose(mlfile); 22371558Srgrimes } 22381558Srgrimes} 22391558Srgrimes 22401558Srgrimesvoid 22411558Srgrimesadd_mlist(hostp, dirp) 22421558Srgrimes char *hostp, *dirp; 22431558Srgrimes{ 22441558Srgrimes struct mountlist *mlp, **mlpp; 22451558Srgrimes FILE *mlfile; 22461558Srgrimes 22471558Srgrimes mlpp = &mlhead; 22481558Srgrimes mlp = mlhead; 22491558Srgrimes while (mlp) { 22501558Srgrimes if (!strcmp(mlp->ml_host, hostp) && !strcmp(mlp->ml_dirp, dirp)) 22511558Srgrimes return; 22521558Srgrimes mlpp = &mlp->ml_next; 22531558Srgrimes mlp = mlp->ml_next; 22541558Srgrimes } 22551558Srgrimes mlp = (struct mountlist *)malloc(sizeof (*mlp)); 225637663Scharnier if (mlp == (struct mountlist *)NULL) 225737663Scharnier out_of_mem(); 22581558Srgrimes strncpy(mlp->ml_host, hostp, RPCMNT_NAMELEN); 22591558Srgrimes mlp->ml_host[RPCMNT_NAMELEN] = '\0'; 22601558Srgrimes strncpy(mlp->ml_dirp, dirp, RPCMNT_PATHLEN); 22611558Srgrimes mlp->ml_dirp[RPCMNT_PATHLEN] = '\0'; 22621558Srgrimes mlp->ml_next = (struct mountlist *)NULL; 22631558Srgrimes *mlpp = mlp; 22641558Srgrimes if ((mlfile = fopen(_PATH_RMOUNTLIST, "a")) == NULL) { 226537663Scharnier syslog(LOG_ERR, "can't update %s", _PATH_RMOUNTLIST); 22661558Srgrimes return; 22671558Srgrimes } 22681558Srgrimes fprintf(mlfile, "%s %s\n", mlp->ml_host, mlp->ml_dirp); 22691558Srgrimes fclose(mlfile); 22701558Srgrimes} 22711558Srgrimes 22721558Srgrimes/* 22731558Srgrimes * Free up a group list. 22741558Srgrimes */ 22751558Srgrimesvoid 22761558Srgrimesfree_grp(grp) 22771558Srgrimes struct grouplist *grp; 22781558Srgrimes{ 22791558Srgrimes if (grp->gr_type == GT_HOST) { 228074462Salfred if (grp->gr_ptr.gt_addrinfo != NULL) 228174462Salfred freeaddrinfo(grp->gr_ptr.gt_addrinfo); 22821558Srgrimes } else if (grp->gr_type == GT_NET) { 22831558Srgrimes if (grp->gr_ptr.gt_net.nt_name) 22841558Srgrimes free(grp->gr_ptr.gt_net.nt_name); 22851558Srgrimes } 22861558Srgrimes free((caddr_t)grp); 22871558Srgrimes} 22881558Srgrimes 22891558Srgrimes#ifdef DEBUG 22901558Srgrimesvoid 22911558SrgrimesSYSLOG(int pri, const char *fmt, ...) 22921558Srgrimes{ 22931558Srgrimes va_list ap; 22941558Srgrimes 22951558Srgrimes va_start(ap, fmt); 22961558Srgrimes vfprintf(stderr, fmt, ap); 22971558Srgrimes va_end(ap); 22981558Srgrimes} 22991558Srgrimes#endif /* DEBUG */ 23001558Srgrimes 23011558Srgrimes/* 23021558Srgrimes * Check options for consistency. 23031558Srgrimes */ 23041558Srgrimesint 23051558Srgrimescheck_options(dp) 23061558Srgrimes struct dirlist *dp; 23071558Srgrimes{ 23081558Srgrimes 23091558Srgrimes if (dp == (struct dirlist *)NULL) 23101558Srgrimes return (1); 231183653Speter if ((opt_flags & (OP_MAPROOT | OP_MAPALL)) == (OP_MAPROOT | OP_MAPALL)) { 231283653Speter syslog(LOG_ERR, "-mapall and -maproot mutually exclusive"); 23131558Srgrimes return (1); 23141558Srgrimes } 23151558Srgrimes if ((opt_flags & OP_MASK) && (opt_flags & OP_NET) == 0) { 231675801Siedowse syslog(LOG_ERR, "-mask requires -network"); 231775801Siedowse return (1); 23181558Srgrimes } 231975801Siedowse if ((opt_flags & OP_NET) && (opt_flags & OP_HAVEMASK) == 0) { 232075801Siedowse syslog(LOG_ERR, "-network requires mask specification"); 232175801Siedowse return (1); 232275801Siedowse } 232375801Siedowse if ((opt_flags & OP_MASK) && (opt_flags & OP_MASKLEN)) { 232475801Siedowse syslog(LOG_ERR, "-mask and /masklen are mutually exclusive"); 232575801Siedowse return (1); 232675801Siedowse } 23271558Srgrimes if ((opt_flags & OP_ALLDIRS) && dp->dp_left) { 232845927Salex syslog(LOG_ERR, "-alldirs has multiple directories"); 23291558Srgrimes return (1); 23301558Srgrimes } 23311558Srgrimes return (0); 23321558Srgrimes} 23331558Srgrimes 23341558Srgrimes/* 23351558Srgrimes * Check an absolute directory path for any symbolic links. Return true 23361558Srgrimes */ 23371558Srgrimesint 23381558Srgrimescheck_dirpath(dirp) 23391558Srgrimes char *dirp; 23401558Srgrimes{ 23411558Srgrimes char *cp; 23421558Srgrimes int ret = 1; 23431558Srgrimes struct stat sb; 23441558Srgrimes 23451558Srgrimes cp = dirp + 1; 23461558Srgrimes while (*cp && ret) { 23471558Srgrimes if (*cp == '/') { 23481558Srgrimes *cp = '\0'; 23499336Sdfr if (lstat(dirp, &sb) < 0 || !S_ISDIR(sb.st_mode)) 23501558Srgrimes ret = 0; 23511558Srgrimes *cp = '/'; 23521558Srgrimes } 23531558Srgrimes cp++; 23541558Srgrimes } 23559336Sdfr if (lstat(dirp, &sb) < 0 || !S_ISDIR(sb.st_mode)) 23561558Srgrimes ret = 0; 23571558Srgrimes return (ret); 23581558Srgrimes} 23599336Sdfr 236075801Siedowse/* 236175801Siedowse * Make a netmask according to the specified prefix length. The ss_family 236275801Siedowse * and other non-address fields must be initialised before calling this. 236375801Siedowse */ 236475801Siedowseint 236575801Siedowsemakemask(struct sockaddr_storage *ssp, int bitlen) 236674462Salfred{ 236775801Siedowse u_char *p; 236875801Siedowse int bits, i, len; 236974462Salfred 237075801Siedowse if ((p = sa_rawaddr((struct sockaddr *)ssp, &len)) == NULL) 237175801Siedowse return (-1); 2372103949Smike if (bitlen > len * CHAR_BIT) 237375801Siedowse return (-1); 237474462Salfred 237575801Siedowse for (i = 0; i < len; i++) { 2376103949Smike bits = (bitlen > CHAR_BIT) ? CHAR_BIT : bitlen; 237775801Siedowse *p++ = (1 << bits) - 1; 237875801Siedowse bitlen -= bits; 237974462Salfred } 238075801Siedowse return 0; 238174462Salfred} 238274462Salfred 238375801Siedowse/* 238475801Siedowse * Check that the sockaddr is a valid netmask. Returns 0 if the mask 238575801Siedowse * is acceptable (i.e. of the form 1...10....0). 238675801Siedowse */ 238775801Siedowseint 238875801Siedowsecheckmask(struct sockaddr *sa) 238974462Salfred{ 239075801Siedowse u_char *mask; 239175801Siedowse int i, len; 239274462Salfred 239375801Siedowse if ((mask = sa_rawaddr(sa, &len)) == NULL) 239475801Siedowse return (-1); 239575801Siedowse 239675801Siedowse for (i = 0; i < len; i++) 239775801Siedowse if (mask[i] != 0xff) 239875801Siedowse break; 239975801Siedowse if (i < len) { 240075801Siedowse if (~mask[i] & (u_char)(~mask[i] + 1)) 240175801Siedowse return (-1); 240275801Siedowse i++; 240374462Salfred } 240475801Siedowse for (; i < len; i++) 240575801Siedowse if (mask[i] != 0) 240675801Siedowse return (-1); 240775801Siedowse return (0); 240874462Salfred} 240974462Salfred 241075801Siedowse/* 241175801Siedowse * Compare two sockaddrs according to a specified mask. Return zero if 241275801Siedowse * `sa1' matches `sa2' when filtered by the netmask in `samask'. 241375801Siedowse * If samask is NULL, perform a full comparision. 241475801Siedowse */ 241575801Siedowseint 241675801Siedowsesacmp(struct sockaddr *sa1, struct sockaddr *sa2, struct sockaddr *samask) 241774462Salfred{ 241875801Siedowse unsigned char *p1, *p2, *mask; 241975801Siedowse int len, i; 242074462Salfred 242175801Siedowse if (sa1->sa_family != sa2->sa_family || 242275801Siedowse (p1 = sa_rawaddr(sa1, &len)) == NULL || 242375801Siedowse (p2 = sa_rawaddr(sa2, NULL)) == NULL) 242475801Siedowse return (1); 242575801Siedowse 242675801Siedowse switch (sa1->sa_family) { 242774462Salfred case AF_INET6: 242875801Siedowse if (((struct sockaddr_in6 *)sa1)->sin6_scope_id != 242975801Siedowse ((struct sockaddr_in6 *)sa2)->sin6_scope_id) 243075801Siedowse return (1); 243174462Salfred break; 243274462Salfred } 243374462Salfred 243475801Siedowse /* Simple binary comparison if no mask specified. */ 243575801Siedowse if (samask == NULL) 243675801Siedowse return (memcmp(p1, p2, len)); 243774462Salfred 243875801Siedowse /* Set up the mask, and do a mask-based comparison. */ 243975801Siedowse if (sa1->sa_family != samask->sa_family || 244075801Siedowse (mask = sa_rawaddr(samask, NULL)) == NULL) 244175801Siedowse return (1); 244274462Salfred 244375801Siedowse for (i = 0; i < len; i++) 244475801Siedowse if ((p1[i] & mask[i]) != (p2[i] & mask[i])) 244575801Siedowse return (1); 244675801Siedowse return (0); 244774462Salfred} 244874462Salfred 244975801Siedowse/* 245075801Siedowse * Return a pointer to the part of the sockaddr that contains the 245175801Siedowse * raw address, and set *nbytes to its length in bytes. Returns 245275801Siedowse * NULL if the address family is unknown. 245375801Siedowse */ 245475801Siedowsevoid * 245575801Siedowsesa_rawaddr(struct sockaddr *sa, int *nbytes) { 245675801Siedowse void *p; 245774462Salfred int len; 245874462Salfred 245975801Siedowse switch (sa->sa_family) { 246074462Salfred case AF_INET: 246175801Siedowse len = sizeof(((struct sockaddr_in *)sa)->sin_addr); 246275801Siedowse p = &((struct sockaddr_in *)sa)->sin_addr; 246374462Salfred break; 246474462Salfred case AF_INET6: 246575801Siedowse len = sizeof(((struct sockaddr_in6 *)sa)->sin6_addr); 246675801Siedowse p = &((struct sockaddr_in6 *)sa)->sin6_addr; 246774462Salfred break; 246874462Salfred default: 246975801Siedowse p = NULL; 247075801Siedowse len = 0; 247174462Salfred } 247274462Salfred 247375801Siedowse if (nbytes != NULL) 247475801Siedowse *nbytes = len; 247575801Siedowse return (p); 247674462Salfred} 247774462Salfred 247875754Siedowsevoid 247975754Siedowsehuphandler(int sig) 248075754Siedowse{ 248175754Siedowse got_sighup = 1; 248275754Siedowse} 248375754Siedowse 248474462Salfredvoid terminate(sig) 248574462Salfredint sig; 248674462Salfred{ 248774462Salfred close(mountdlockfd); 248874462Salfred unlink(MOUNTDLOCK); 248974792Salfred rpcb_unset(RPCPROG_MNT, RPCMNT_VER1, NULL); 249074792Salfred rpcb_unset(RPCPROG_MNT, RPCMNT_VER3, NULL); 249174462Salfred exit (0); 249274462Salfred} 2493