mountd.c revision 51968
11558Srgrimes/* 21558Srgrimes * Copyright (c) 1989, 1993 31558Srgrimes * The Regents of the University of California. All rights reserved. 41558Srgrimes * 51558Srgrimes * This code is derived from software contributed to Berkeley by 61558Srgrimes * Herb Hasler and Rick Macklem at The University of Guelph. 71558Srgrimes * 81558Srgrimes * Redistribution and use in source and binary forms, with or without 91558Srgrimes * modification, are permitted provided that the following conditions 101558Srgrimes * are met: 111558Srgrimes * 1. Redistributions of source code must retain the above copyright 121558Srgrimes * notice, this list of conditions and the following disclaimer. 131558Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 141558Srgrimes * notice, this list of conditions and the following disclaimer in the 151558Srgrimes * documentation and/or other materials provided with the distribution. 161558Srgrimes * 3. All advertising materials mentioning features or use of this software 171558Srgrimes * must display the following acknowledgement: 181558Srgrimes * This product includes software developed by the University of 191558Srgrimes * California, Berkeley and its contributors. 201558Srgrimes * 4. Neither the name of the University nor the names of its contributors 211558Srgrimes * may be used to endorse or promote products derived from this software 221558Srgrimes * without specific prior written permission. 231558Srgrimes * 241558Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 251558Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 261558Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 271558Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 281558Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 291558Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 301558Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 311558Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 321558Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 331558Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 341558Srgrimes * SUCH DAMAGE. 351558Srgrimes */ 361558Srgrimes 371558Srgrimes#ifndef lint 3837663Scharnierstatic const char copyright[] = 391558Srgrimes"@(#) Copyright (c) 1989, 1993\n\ 401558Srgrimes The Regents of the University of California. All rights reserved.\n"; 412999Swollman#endif /*not lint*/ 421558Srgrimes 431558Srgrimes#ifndef lint 4437663Scharnier#if 0 4537663Scharnierstatic char sccsid[] = "@(#)mountd.c 8.15 (Berkeley) 5/1/95"; 4637663Scharnier#endif 472999Swollmanstatic const char rcsid[] = 4850476Speter "$FreeBSD: head/usr.sbin/mountd/mountd.c 51968 1999-10-06 18:20:44Z alfred $"; 492999Swollman#endif /*not lint*/ 501558Srgrimes 511558Srgrimes#include <sys/param.h> 521558Srgrimes#include <sys/mount.h> 531558Srgrimes#include <sys/stat.h> 541558Srgrimes#include <sys/syslog.h> 5524330Sguido#include <sys/sysctl.h> 561558Srgrimes 571558Srgrimes#include <rpc/rpc.h> 581558Srgrimes#include <rpc/pmap_clnt.h> 591558Srgrimes#ifdef ISO 601558Srgrimes#include <netiso/iso.h> 611558Srgrimes#endif 621558Srgrimes#include <nfs/rpcv2.h> 639336Sdfr#include <nfs/nfsproto.h> 6424330Sguido#include <nfs/nfs.h> 6523681Speter#include <ufs/ufs/ufsmount.h> 6623681Speter#include <msdosfs/msdosfsmount.h> 6723681Speter#include <isofs/cd9660/cd9660_mount.h> /* XXX need isofs in include */ 681558Srgrimes 691558Srgrimes#include <arpa/inet.h> 701558Srgrimes 711558Srgrimes#include <ctype.h> 7237663Scharnier#include <err.h> 731558Srgrimes#include <errno.h> 741558Srgrimes#include <grp.h> 751558Srgrimes#include <netdb.h> 761558Srgrimes#include <pwd.h> 771558Srgrimes#include <signal.h> 781558Srgrimes#include <stdio.h> 791558Srgrimes#include <stdlib.h> 801558Srgrimes#include <string.h> 811558Srgrimes#include <unistd.h> 821558Srgrimes#include "pathnames.h" 831558Srgrimes 841558Srgrimes#ifdef DEBUG 851558Srgrimes#include <stdarg.h> 861558Srgrimes#endif 871558Srgrimes 881558Srgrimes/* 891558Srgrimes * Structures for keeping the mount list and export list 901558Srgrimes */ 911558Srgrimesstruct mountlist { 921558Srgrimes struct mountlist *ml_next; 931558Srgrimes char ml_host[RPCMNT_NAMELEN+1]; 941558Srgrimes char ml_dirp[RPCMNT_PATHLEN+1]; 951558Srgrimes}; 961558Srgrimes 971558Srgrimesstruct dirlist { 981558Srgrimes struct dirlist *dp_left; 991558Srgrimes struct dirlist *dp_right; 1001558Srgrimes int dp_flag; 1011558Srgrimes struct hostlist *dp_hosts; /* List of hosts this dir exported to */ 1021558Srgrimes char dp_dirp[1]; /* Actually malloc'd to size of dir */ 1031558Srgrimes}; 1041558Srgrimes/* dp_flag bits */ 1051558Srgrimes#define DP_DEFSET 0x1 1069336Sdfr#define DP_HOSTSET 0x2 1079336Sdfr#define DP_KERB 0x4 1081558Srgrimes 1091558Srgrimesstruct exportlist { 1101558Srgrimes struct exportlist *ex_next; 1111558Srgrimes struct dirlist *ex_dirl; 1121558Srgrimes struct dirlist *ex_defdir; 1131558Srgrimes int ex_flag; 1141558Srgrimes fsid_t ex_fs; 1151558Srgrimes char *ex_fsdir; 11627447Sdfr char *ex_indexfile; 1171558Srgrimes}; 1181558Srgrimes/* ex_flag bits */ 1191558Srgrimes#define EX_LINKED 0x1 1201558Srgrimes 1211558Srgrimesstruct netmsk { 12242144Sdfr u_int32_t nt_net; 12342144Sdfr u_int32_t nt_mask; 12442144Sdfr char *nt_name; 1251558Srgrimes}; 1261558Srgrimes 1271558Srgrimesunion grouptypes { 1281558Srgrimes struct hostent *gt_hostent; 1291558Srgrimes struct netmsk gt_net; 1301558Srgrimes#ifdef ISO 1311558Srgrimes struct sockaddr_iso *gt_isoaddr; 1321558Srgrimes#endif 1331558Srgrimes}; 1341558Srgrimes 1351558Srgrimesstruct grouplist { 1361558Srgrimes int gr_type; 1371558Srgrimes union grouptypes gr_ptr; 1381558Srgrimes struct grouplist *gr_next; 1391558Srgrimes}; 1401558Srgrimes/* Group types */ 1411558Srgrimes#define GT_NULL 0x0 1421558Srgrimes#define GT_HOST 0x1 1431558Srgrimes#define GT_NET 0x2 1441558Srgrimes#define GT_ISO 0x4 1457401Swpaul#define GT_IGNORE 0x5 1461558Srgrimes 1471558Srgrimesstruct hostlist { 1489336Sdfr int ht_flag; /* Uses DP_xx bits */ 1491558Srgrimes struct grouplist *ht_grp; 1501558Srgrimes struct hostlist *ht_next; 1511558Srgrimes}; 1521558Srgrimes 1539336Sdfrstruct fhreturn { 1549336Sdfr int fhr_flag; 1559336Sdfr int fhr_vers; 1569336Sdfr nfsfh_t fhr_fh; 1579336Sdfr}; 1589336Sdfr 1591558Srgrimes/* Global defs */ 1601558Srgrimeschar *add_expdir __P((struct dirlist **, char *, int)); 1611558Srgrimesvoid add_dlist __P((struct dirlist **, struct dirlist *, 1629336Sdfr struct grouplist *, int)); 1631558Srgrimesvoid add_mlist __P((char *, char *)); 1641558Srgrimesint check_dirpath __P((char *)); 1651558Srgrimesint check_options __P((struct dirlist *)); 16642144Sdfrint chk_host __P((struct dirlist *, u_int32_t, int *, int *)); 1671558Srgrimesvoid del_mlist __P((char *, char *)); 1681558Srgrimesstruct dirlist *dirp_search __P((struct dirlist *, char *)); 1691558Srgrimesint do_mount __P((struct exportlist *, struct grouplist *, int, 1709336Sdfr struct ucred *, char *, int, struct statfs *)); 1711558Srgrimesint do_opt __P((char **, char **, struct exportlist *, struct grouplist *, 1721558Srgrimes int *, int *, struct ucred *)); 1731558Srgrimesstruct exportlist *ex_search __P((fsid_t *)); 1741558Srgrimesstruct exportlist *get_exp __P((void)); 1751558Srgrimesvoid free_dir __P((struct dirlist *)); 1761558Srgrimesvoid free_exp __P((struct exportlist *)); 1771558Srgrimesvoid free_grp __P((struct grouplist *)); 1781558Srgrimesvoid free_host __P((struct hostlist *)); 1791558Srgrimesvoid get_exportlist __P((void)); 1807401Swpaulint get_host __P((char *, struct grouplist *, struct grouplist *)); 1819336Sdfrint get_num __P((char *)); 1821558Srgrimesstruct hostlist *get_ht __P((void)); 1831558Srgrimesint get_line __P((void)); 1841558Srgrimesvoid get_mountlist __P((void)); 1851558Srgrimesint get_net __P((char *, struct netmsk *, int)); 1861558Srgrimesvoid getexp_err __P((struct exportlist *, struct grouplist *)); 1871558Srgrimesstruct grouplist *get_grp __P((void)); 1881558Srgrimesvoid hang_dirp __P((struct dirlist *, struct grouplist *, 1891558Srgrimes struct exportlist *, int)); 1901558Srgrimesvoid mntsrv __P((struct svc_req *, SVCXPRT *)); 1911558Srgrimesvoid nextfield __P((char **, char **)); 1921558Srgrimesvoid out_of_mem __P((void)); 1931558Srgrimesvoid parsecred __P((char *, struct ucred *)); 1941558Srgrimesint put_exlist __P((struct dirlist *, XDR *, struct dirlist *, int *)); 19542144Sdfrint scan_tree __P((struct dirlist *, u_int32_t)); 1961558Srgrimesvoid send_umntall __P((void)); 1971558Srgrimesint umntall_each __P((caddr_t, struct sockaddr_in *)); 19837663Scharnierstatic void usage __P((void)); 1991558Srgrimesint xdr_dir __P((XDR *, char *)); 2001558Srgrimesint xdr_explist __P((XDR *, caddr_t)); 2019336Sdfrint xdr_fhs __P((XDR *, caddr_t)); 2021558Srgrimesint xdr_mlist __P((XDR *, caddr_t)); 2031558Srgrimes 2041558Srgrimes/* C library */ 2051558Srgrimesint getnetgrent(); 2061558Srgrimesvoid endnetgrent(); 2071558Srgrimesvoid setnetgrent(); 2081558Srgrimes 2091558Srgrimes#ifdef ISO 2101558Srgrimesstruct iso_addr *iso_addr(); 2111558Srgrimes#endif 2121558Srgrimes 2131558Srgrimesstruct exportlist *exphead; 2141558Srgrimesstruct mountlist *mlhead; 2151558Srgrimesstruct grouplist *grphead; 2161558Srgrimeschar exname[MAXPATHLEN]; 2171558Srgrimesstruct ucred def_anon = { 2181558Srgrimes 1, 2191558Srgrimes (uid_t) -2, 2201558Srgrimes 1, 2211558Srgrimes { (gid_t) -2 } 2221558Srgrimes}; 22325087Sdfrint force_v2 = 0; 2249336Sdfrint resvport_only = 1; 2259336Sdfrint dir_only = 1; 22631705Sguidoint log = 0; 2271558Srgrimesint opt_flags; 2281558Srgrimes/* Bits for above */ 2291558Srgrimes#define OP_MAPROOT 0x01 2301558Srgrimes#define OP_MAPALL 0x02 2311558Srgrimes#define OP_KERB 0x04 2321558Srgrimes#define OP_MASK 0x08 2331558Srgrimes#define OP_NET 0x10 2341558Srgrimes#define OP_ISO 0x20 2351558Srgrimes#define OP_ALLDIRS 0x40 2361558Srgrimes 2371558Srgrimes#ifdef DEBUG 2381558Srgrimesint debug = 1; 2391558Srgrimesvoid SYSLOG __P((int, const char *, ...)); 2401558Srgrimes#define syslog SYSLOG 2411558Srgrimes#else 2421558Srgrimesint debug = 0; 2431558Srgrimes#endif 2441558Srgrimes 2451558Srgrimes/* 2461558Srgrimes * Mountd server for NFS mount protocol as described in: 2471558Srgrimes * NFS: Network File System Protocol Specification, RFC1094, Appendix A 2481558Srgrimes * The optional arguments are the exports file name 2491558Srgrimes * default: _PATH_EXPORTS 2501558Srgrimes * and "-n" to allow nonroot mount. 2511558Srgrimes */ 2521558Srgrimesint 2531558Srgrimesmain(argc, argv) 2541558Srgrimes int argc; 2551558Srgrimes char **argv; 2561558Srgrimes{ 2579202Srgrimes SVCXPRT *udptransp, *tcptransp; 25832656Sbde int c, error, mib[3]; 25923681Speter struct vfsconf vfc; 2601558Srgrimes 26123681Speter error = getvfsbyname("nfs", &vfc); 26223681Speter if (error && vfsisloadable("nfs")) { 2632999Swollman if(vfsload("nfs")) 2642999Swollman err(1, "vfsload(nfs)"); 2652999Swollman endvfsent(); /* flush cache */ 26623681Speter error = getvfsbyname("nfs", &vfc); 2672999Swollman } 26823681Speter if (error) 2692999Swollman errx(1, "NFS support is not available in the running kernel"); 2702999Swollman 27131665Sguido while ((c = getopt(argc, argv, "2dlnr")) != -1) 2721558Srgrimes switch (c) { 27325087Sdfr case '2': 27425087Sdfr force_v2 = 1; 27525087Sdfr break; 2769336Sdfr case 'n': 2779336Sdfr resvport_only = 0; 2789336Sdfr break; 2799336Sdfr case 'r': 2809336Sdfr dir_only = 0; 2819336Sdfr break; 2828688Sphk case 'd': 2838688Sphk debug = debug ? 0 : 1; 2848688Sphk break; 28531656Sguido case 'l': 28631656Sguido log = 1; 28731656Sguido break; 2881558Srgrimes default: 28937663Scharnier usage(); 2901558Srgrimes }; 2911558Srgrimes argc -= optind; 2921558Srgrimes argv += optind; 2931558Srgrimes grphead = (struct grouplist *)NULL; 2941558Srgrimes exphead = (struct exportlist *)NULL; 2951558Srgrimes mlhead = (struct mountlist *)NULL; 2961558Srgrimes if (argc == 1) { 2971558Srgrimes strncpy(exname, *argv, MAXPATHLEN-1); 2981558Srgrimes exname[MAXPATHLEN-1] = '\0'; 2991558Srgrimes } else 3001558Srgrimes strcpy(exname, _PATH_EXPORTS); 3011558Srgrimes openlog("mountd", LOG_PID, LOG_DAEMON); 3021558Srgrimes if (debug) 30337663Scharnier warnx("getting export list"); 3041558Srgrimes get_exportlist(); 3051558Srgrimes if (debug) 30637663Scharnier warnx("getting mount list"); 3071558Srgrimes get_mountlist(); 3081558Srgrimes if (debug) 30937663Scharnier warnx("here we go"); 3101558Srgrimes if (debug == 0) { 3111558Srgrimes daemon(0, 0); 3121558Srgrimes signal(SIGINT, SIG_IGN); 3131558Srgrimes signal(SIGQUIT, SIG_IGN); 3141558Srgrimes } 3151558Srgrimes signal(SIGHUP, (void (*) __P((int))) get_exportlist); 3161558Srgrimes signal(SIGTERM, (void (*) __P((int))) send_umntall); 3171558Srgrimes { FILE *pidfile = fopen(_PATH_MOUNTDPID, "w"); 3181558Srgrimes if (pidfile != NULL) { 3191558Srgrimes fprintf(pidfile, "%d\n", getpid()); 3201558Srgrimes fclose(pidfile); 3211558Srgrimes } 3221558Srgrimes } 32324759Sguido if (!resvport_only) { 32424759Sguido mib[0] = CTL_VFS; 32532656Sbde mib[1] = vfc.vfc_typenum; 32624759Sguido mib[2] = NFS_NFSPRIVPORT; 32724759Sguido if (sysctl(mib, 3, NULL, NULL, &resvport_only, 32824759Sguido sizeof(resvport_only)) != 0 && errno != ENOENT) { 32924759Sguido syslog(LOG_ERR, "sysctl: %m"); 33024759Sguido exit(1); 33124759Sguido } 33224330Sguido } 3339202Srgrimes if ((udptransp = svcudp_create(RPC_ANYSOCK)) == NULL || 3349202Srgrimes (tcptransp = svctcp_create(RPC_ANYSOCK, 0, 0)) == NULL) { 33537663Scharnier syslog(LOG_ERR, "can't create socket"); 3361558Srgrimes exit(1); 3371558Srgrimes } 3389336Sdfr pmap_unset(RPCPROG_MNT, 1); 3399336Sdfr pmap_unset(RPCPROG_MNT, 3); 34025087Sdfr if (!force_v2) 34125087Sdfr if (!svc_register(udptransp, RPCPROG_MNT, 3, mntsrv, IPPROTO_UDP) || 34225087Sdfr !svc_register(tcptransp, RPCPROG_MNT, 3, mntsrv, IPPROTO_TCP)) { 34337663Scharnier syslog(LOG_ERR, "can't register mount"); 34425087Sdfr exit(1); 34525087Sdfr } 3469336Sdfr if (!svc_register(udptransp, RPCPROG_MNT, 1, mntsrv, IPPROTO_UDP) || 34725087Sdfr !svc_register(tcptransp, RPCPROG_MNT, 1, mntsrv, IPPROTO_TCP)) { 34837663Scharnier syslog(LOG_ERR, "can't register mount"); 3491558Srgrimes exit(1); 3501558Srgrimes } 3511558Srgrimes svc_run(); 35237663Scharnier syslog(LOG_ERR, "mountd died"); 3531558Srgrimes exit(1); 3541558Srgrimes} 3551558Srgrimes 35637663Scharnierstatic void 35737663Scharnierusage() 35837663Scharnier{ 35937663Scharnier fprintf(stderr, 36037663Scharnier "usage: mountd [-2] [-d] [-l] [-n] [-r] [export_file]\n"); 36137663Scharnier exit(1); 36237663Scharnier} 36337663Scharnier 3641558Srgrimes/* 3651558Srgrimes * The mount rpc service 3661558Srgrimes */ 3671558Srgrimesvoid 3681558Srgrimesmntsrv(rqstp, transp) 3691558Srgrimes struct svc_req *rqstp; 3701558Srgrimes SVCXPRT *transp; 3711558Srgrimes{ 3721558Srgrimes struct exportlist *ep; 3731558Srgrimes struct dirlist *dp; 3749336Sdfr struct fhreturn fhr; 3751558Srgrimes struct stat stb; 3761558Srgrimes struct statfs fsb; 3771558Srgrimes struct hostent *hp; 37831656Sguido struct in_addr saddrin; 37942144Sdfr u_int32_t saddr; 3809336Sdfr u_short sport; 38123681Speter char rpcpath[RPCMNT_PATHLEN + 1], dirpath[MAXPATHLEN]; 38228911Sguido int bad = 0, defset, hostset; 3839336Sdfr sigset_t sighup_mask; 3841558Srgrimes 3859336Sdfr sigemptyset(&sighup_mask); 3869336Sdfr sigaddset(&sighup_mask, SIGHUP); 3871558Srgrimes saddr = transp->xp_raddr.sin_addr.s_addr; 38831656Sguido saddrin = transp->xp_raddr.sin_addr; 3899336Sdfr sport = ntohs(transp->xp_raddr.sin_port); 3901558Srgrimes hp = (struct hostent *)NULL; 3911558Srgrimes switch (rqstp->rq_proc) { 3921558Srgrimes case NULLPROC: 3931558Srgrimes if (!svc_sendreply(transp, xdr_void, (caddr_t)NULL)) 39437663Scharnier syslog(LOG_ERR, "can't send reply"); 3951558Srgrimes return; 3961558Srgrimes case RPCMNT_MOUNT: 3979336Sdfr if (sport >= IPPORT_RESERVED && resvport_only) { 39831656Sguido syslog(LOG_NOTICE, 39931656Sguido "mount request from %s from unprivileged port", 40031656Sguido inet_ntoa(saddrin)); 4011558Srgrimes svcerr_weakauth(transp); 4021558Srgrimes return; 4031558Srgrimes } 4041558Srgrimes if (!svc_getargs(transp, xdr_dir, rpcpath)) { 40531656Sguido syslog(LOG_NOTICE, "undecodable mount request from %s", 40631656Sguido inet_ntoa(saddrin)); 4071558Srgrimes svcerr_decode(transp); 4081558Srgrimes return; 4091558Srgrimes } 4101558Srgrimes 4111558Srgrimes /* 4121558Srgrimes * Get the real pathname and make sure it is a directory 4139336Sdfr * or a regular file if the -r option was specified 4149336Sdfr * and it exists. 4151558Srgrimes */ 41651968Salfred if (realpath(rpcpath, dirpath) == NULL || 4171558Srgrimes stat(dirpath, &stb) < 0 || 4189336Sdfr (!S_ISDIR(stb.st_mode) && 4199336Sdfr (dir_only || !S_ISREG(stb.st_mode))) || 4201558Srgrimes statfs(dirpath, &fsb) < 0) { 4211558Srgrimes chdir("/"); /* Just in case realpath doesn't */ 42231656Sguido syslog(LOG_NOTICE, 42337663Scharnier "mount request from %s for non existent path %s", 42431656Sguido inet_ntoa(saddrin), dirpath); 4251558Srgrimes if (debug) 42637663Scharnier warnx("stat failed on %s", dirpath); 42728911Sguido bad = ENOENT; /* We will send error reply later */ 4281558Srgrimes } 4291558Srgrimes 4301558Srgrimes /* Check in the exports list */ 4319336Sdfr sigprocmask(SIG_BLOCK, &sighup_mask, NULL); 4321558Srgrimes ep = ex_search(&fsb.f_fsid); 4339336Sdfr hostset = defset = 0; 4349336Sdfr if (ep && (chk_host(ep->ex_defdir, saddr, &defset, &hostset) || 4351558Srgrimes ((dp = dirp_search(ep->ex_dirl, dirpath)) && 4369336Sdfr chk_host(dp, saddr, &defset, &hostset)) || 4371558Srgrimes (defset && scan_tree(ep->ex_defdir, saddr) == 0 && 4381558Srgrimes scan_tree(ep->ex_dirl, saddr) == 0))) { 43928911Sguido if (bad) { 44028911Sguido if (!svc_sendreply(transp, xdr_long, 44128911Sguido (caddr_t)&bad)) 44237663Scharnier syslog(LOG_ERR, "can't send reply"); 44328911Sguido sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 44428911Sguido return; 44528911Sguido } 4469336Sdfr if (hostset & DP_HOSTSET) 4479336Sdfr fhr.fhr_flag = hostset; 4489336Sdfr else 4499336Sdfr fhr.fhr_flag = defset; 4509336Sdfr fhr.fhr_vers = rqstp->rq_vers; 4511558Srgrimes /* Get the file handle */ 45223681Speter memset(&fhr.fhr_fh, 0, sizeof(nfsfh_t)); 4539336Sdfr if (getfh(dirpath, (fhandle_t *)&fhr.fhr_fh) < 0) { 4541558Srgrimes bad = errno; 45537663Scharnier syslog(LOG_ERR, "can't get fh for %s", dirpath); 4561558Srgrimes if (!svc_sendreply(transp, xdr_long, 4571558Srgrimes (caddr_t)&bad)) 45837663Scharnier syslog(LOG_ERR, "can't send reply"); 4599336Sdfr sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 4601558Srgrimes return; 4611558Srgrimes } 4629336Sdfr if (!svc_sendreply(transp, xdr_fhs, (caddr_t)&fhr)) 46337663Scharnier syslog(LOG_ERR, "can't send reply"); 4641558Srgrimes if (hp == NULL) 4651558Srgrimes hp = gethostbyaddr((caddr_t)&saddr, 4661558Srgrimes sizeof(saddr), AF_INET); 4671558Srgrimes if (hp) 4681558Srgrimes add_mlist(hp->h_name, dirpath); 4691558Srgrimes else 47031656Sguido add_mlist(inet_ntoa(saddrin), 4711558Srgrimes dirpath); 4721558Srgrimes if (debug) 47337663Scharnier warnx("mount successful"); 47431656Sguido if (log) 47531656Sguido syslog(LOG_NOTICE, 47631656Sguido "mount request succeeded from %s for %s", 47731656Sguido inet_ntoa(saddrin), dirpath); 47831656Sguido } else { 4791558Srgrimes bad = EACCES; 48031656Sguido syslog(LOG_NOTICE, 48131656Sguido "mount request denied from %s for %s", 48231656Sguido inet_ntoa(saddrin), dirpath); 48331656Sguido } 48428911Sguido 48528911Sguido if (bad && !svc_sendreply(transp, xdr_long, (caddr_t)&bad)) 48637663Scharnier syslog(LOG_ERR, "can't send reply"); 4879336Sdfr sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 4881558Srgrimes return; 4891558Srgrimes case RPCMNT_DUMP: 4901558Srgrimes if (!svc_sendreply(transp, xdr_mlist, (caddr_t)NULL)) 49137663Scharnier syslog(LOG_ERR, "can't send reply"); 49231656Sguido else if (log) 49331656Sguido syslog(LOG_NOTICE, 49431656Sguido "dump request succeeded from %s", 49538023Sbde inet_ntoa(saddrin)); 4961558Srgrimes return; 4971558Srgrimes case RPCMNT_UMOUNT: 4989336Sdfr if (sport >= IPPORT_RESERVED && resvport_only) { 49931656Sguido syslog(LOG_NOTICE, 50031656Sguido "umount request from %s from unprivileged port", 50131656Sguido inet_ntoa(saddrin)); 5021558Srgrimes svcerr_weakauth(transp); 5031558Srgrimes return; 5041558Srgrimes } 50551968Salfred if (!svc_getargs(transp, xdr_dir, rpcpath)) { 50631656Sguido syslog(LOG_NOTICE, "undecodable umount request from %s", 50731656Sguido inet_ntoa(saddrin)); 5081558Srgrimes svcerr_decode(transp); 5091558Srgrimes return; 5101558Srgrimes } 51151968Salfred if (realpath(rpcpath, dirpath) == NULL) { 51251968Salfred syslog(LOG_NOTICE, "umount request from %s " 51351968Salfred "for non existent path %s", 51451968Salfred inet_ntoa(saddrin), dirpath); 51551968Salfred } 5161558Srgrimes if (!svc_sendreply(transp, xdr_void, (caddr_t)NULL)) 51737663Scharnier syslog(LOG_ERR, "can't send reply"); 5181558Srgrimes hp = gethostbyaddr((caddr_t)&saddr, sizeof(saddr), AF_INET); 5191558Srgrimes if (hp) 5201558Srgrimes del_mlist(hp->h_name, dirpath); 52131656Sguido del_mlist(inet_ntoa(saddrin), dirpath); 52231656Sguido if (log) 52331656Sguido syslog(LOG_NOTICE, 52431656Sguido "umount request succeeded from %s for %s", 52531656Sguido inet_ntoa(saddrin), dirpath); 5261558Srgrimes return; 5271558Srgrimes case RPCMNT_UMNTALL: 5289336Sdfr if (sport >= IPPORT_RESERVED && resvport_only) { 52931656Sguido syslog(LOG_NOTICE, 53031656Sguido "umountall request from %s from unprivileged port", 53131656Sguido inet_ntoa(saddrin)); 5321558Srgrimes svcerr_weakauth(transp); 5331558Srgrimes return; 5341558Srgrimes } 5351558Srgrimes if (!svc_sendreply(transp, xdr_void, (caddr_t)NULL)) 53637663Scharnier syslog(LOG_ERR, "can't send reply"); 5371558Srgrimes hp = gethostbyaddr((caddr_t)&saddr, sizeof(saddr), AF_INET); 5381558Srgrimes if (hp) 5391558Srgrimes del_mlist(hp->h_name, (char *)NULL); 54031656Sguido del_mlist(inet_ntoa(saddrin), (char *)NULL); 54131656Sguido if (log) 54231656Sguido syslog(LOG_NOTICE, 54331656Sguido "umountall request succeeded from %s", 54431656Sguido inet_ntoa(saddrin)); 5451558Srgrimes return; 5461558Srgrimes case RPCMNT_EXPORT: 5471558Srgrimes if (!svc_sendreply(transp, xdr_explist, (caddr_t)NULL)) 54837663Scharnier syslog(LOG_ERR, "can't send reply"); 54931656Sguido if (log) 55031656Sguido syslog(LOG_NOTICE, 55131656Sguido "export request succeeded from %s", 55231656Sguido inet_ntoa(saddrin)); 5531558Srgrimes return; 5541558Srgrimes default: 5551558Srgrimes svcerr_noproc(transp); 5561558Srgrimes return; 5571558Srgrimes } 5581558Srgrimes} 5591558Srgrimes 5601558Srgrimes/* 5611558Srgrimes * Xdr conversion for a dirpath string 5621558Srgrimes */ 5631558Srgrimesint 5641558Srgrimesxdr_dir(xdrsp, dirp) 5651558Srgrimes XDR *xdrsp; 5661558Srgrimes char *dirp; 5671558Srgrimes{ 5681558Srgrimes return (xdr_string(xdrsp, &dirp, RPCMNT_PATHLEN)); 5691558Srgrimes} 5701558Srgrimes 5711558Srgrimes/* 5729336Sdfr * Xdr routine to generate file handle reply 5731558Srgrimes */ 5741558Srgrimesint 5759336Sdfrxdr_fhs(xdrsp, cp) 5761558Srgrimes XDR *xdrsp; 5779336Sdfr caddr_t cp; 5781558Srgrimes{ 5799336Sdfr register struct fhreturn *fhrp = (struct fhreturn *)cp; 5809336Sdfr u_long ok = 0, len, auth; 5811558Srgrimes 5821558Srgrimes if (!xdr_long(xdrsp, &ok)) 5831558Srgrimes return (0); 5849336Sdfr switch (fhrp->fhr_vers) { 5859336Sdfr case 1: 5869336Sdfr return (xdr_opaque(xdrsp, (caddr_t)&fhrp->fhr_fh, NFSX_V2FH)); 5879336Sdfr case 3: 5889336Sdfr len = NFSX_V3FH; 5899336Sdfr if (!xdr_long(xdrsp, &len)) 5909336Sdfr return (0); 5919336Sdfr if (!xdr_opaque(xdrsp, (caddr_t)&fhrp->fhr_fh, len)) 5929336Sdfr return (0); 5939336Sdfr if (fhrp->fhr_flag & DP_KERB) 5949336Sdfr auth = RPCAUTH_KERB4; 5959336Sdfr else 5969336Sdfr auth = RPCAUTH_UNIX; 5979336Sdfr len = 1; 5989336Sdfr if (!xdr_long(xdrsp, &len)) 5999336Sdfr return (0); 6009336Sdfr return (xdr_long(xdrsp, &auth)); 6019336Sdfr }; 6029336Sdfr return (0); 6031558Srgrimes} 6041558Srgrimes 6051558Srgrimesint 6061558Srgrimesxdr_mlist(xdrsp, cp) 6071558Srgrimes XDR *xdrsp; 6081558Srgrimes caddr_t cp; 6091558Srgrimes{ 6101558Srgrimes struct mountlist *mlp; 6111558Srgrimes int true = 1; 6121558Srgrimes int false = 0; 6131558Srgrimes char *strp; 6141558Srgrimes 6151558Srgrimes mlp = mlhead; 6161558Srgrimes while (mlp) { 6171558Srgrimes if (!xdr_bool(xdrsp, &true)) 6181558Srgrimes return (0); 6191558Srgrimes strp = &mlp->ml_host[0]; 6201558Srgrimes if (!xdr_string(xdrsp, &strp, RPCMNT_NAMELEN)) 6211558Srgrimes return (0); 6221558Srgrimes strp = &mlp->ml_dirp[0]; 6231558Srgrimes if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN)) 6241558Srgrimes return (0); 6251558Srgrimes mlp = mlp->ml_next; 6261558Srgrimes } 6271558Srgrimes if (!xdr_bool(xdrsp, &false)) 6281558Srgrimes return (0); 6291558Srgrimes return (1); 6301558Srgrimes} 6311558Srgrimes 6321558Srgrimes/* 6331558Srgrimes * Xdr conversion for export list 6341558Srgrimes */ 6351558Srgrimesint 6361558Srgrimesxdr_explist(xdrsp, cp) 6371558Srgrimes XDR *xdrsp; 6381558Srgrimes caddr_t cp; 6391558Srgrimes{ 6401558Srgrimes struct exportlist *ep; 6411558Srgrimes int false = 0; 6429336Sdfr int putdef; 6439336Sdfr sigset_t sighup_mask; 6441558Srgrimes 6459336Sdfr sigemptyset(&sighup_mask); 6469336Sdfr sigaddset(&sighup_mask, SIGHUP); 6479336Sdfr sigprocmask(SIG_BLOCK, &sighup_mask, NULL); 6481558Srgrimes ep = exphead; 6491558Srgrimes while (ep) { 6501558Srgrimes putdef = 0; 6511558Srgrimes if (put_exlist(ep->ex_dirl, xdrsp, ep->ex_defdir, &putdef)) 6521558Srgrimes goto errout; 6531558Srgrimes if (ep->ex_defdir && putdef == 0 && 6541558Srgrimes put_exlist(ep->ex_defdir, xdrsp, (struct dirlist *)NULL, 6551558Srgrimes &putdef)) 6561558Srgrimes goto errout; 6571558Srgrimes ep = ep->ex_next; 6581558Srgrimes } 6599336Sdfr sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 6601558Srgrimes if (!xdr_bool(xdrsp, &false)) 6611558Srgrimes return (0); 6621558Srgrimes return (1); 6631558Srgrimeserrout: 6649336Sdfr sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 6651558Srgrimes return (0); 6661558Srgrimes} 6671558Srgrimes 6681558Srgrimes/* 6691558Srgrimes * Called from xdr_explist() to traverse the tree and export the 6701558Srgrimes * directory paths. 6711558Srgrimes */ 6721558Srgrimesint 6731558Srgrimesput_exlist(dp, xdrsp, adp, putdefp) 6741558Srgrimes struct dirlist *dp; 6751558Srgrimes XDR *xdrsp; 6761558Srgrimes struct dirlist *adp; 6771558Srgrimes int *putdefp; 6781558Srgrimes{ 6791558Srgrimes struct grouplist *grp; 6801558Srgrimes struct hostlist *hp; 6811558Srgrimes int true = 1; 6821558Srgrimes int false = 0; 6831558Srgrimes int gotalldir = 0; 6841558Srgrimes char *strp; 6851558Srgrimes 6861558Srgrimes if (dp) { 6871558Srgrimes if (put_exlist(dp->dp_left, xdrsp, adp, putdefp)) 6881558Srgrimes return (1); 6891558Srgrimes if (!xdr_bool(xdrsp, &true)) 6901558Srgrimes return (1); 6911558Srgrimes strp = dp->dp_dirp; 6921558Srgrimes if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN)) 6931558Srgrimes return (1); 6941558Srgrimes if (adp && !strcmp(dp->dp_dirp, adp->dp_dirp)) { 6951558Srgrimes gotalldir = 1; 6961558Srgrimes *putdefp = 1; 6971558Srgrimes } 6981558Srgrimes if ((dp->dp_flag & DP_DEFSET) == 0 && 6991558Srgrimes (gotalldir == 0 || (adp->dp_flag & DP_DEFSET) == 0)) { 7001558Srgrimes hp = dp->dp_hosts; 7011558Srgrimes while (hp) { 7021558Srgrimes grp = hp->ht_grp; 7031558Srgrimes if (grp->gr_type == GT_HOST) { 7041558Srgrimes if (!xdr_bool(xdrsp, &true)) 7051558Srgrimes return (1); 7061558Srgrimes strp = grp->gr_ptr.gt_hostent->h_name; 7078871Srgrimes if (!xdr_string(xdrsp, &strp, 7081558Srgrimes RPCMNT_NAMELEN)) 7091558Srgrimes return (1); 7101558Srgrimes } else if (grp->gr_type == GT_NET) { 7111558Srgrimes if (!xdr_bool(xdrsp, &true)) 7121558Srgrimes return (1); 7131558Srgrimes strp = grp->gr_ptr.gt_net.nt_name; 7148871Srgrimes if (!xdr_string(xdrsp, &strp, 7151558Srgrimes RPCMNT_NAMELEN)) 7161558Srgrimes return (1); 7171558Srgrimes } 7181558Srgrimes hp = hp->ht_next; 7191558Srgrimes if (gotalldir && hp == (struct hostlist *)NULL) { 7201558Srgrimes hp = adp->dp_hosts; 7211558Srgrimes gotalldir = 0; 7221558Srgrimes } 7231558Srgrimes } 7241558Srgrimes } 7251558Srgrimes if (!xdr_bool(xdrsp, &false)) 7261558Srgrimes return (1); 7271558Srgrimes if (put_exlist(dp->dp_right, xdrsp, adp, putdefp)) 7281558Srgrimes return (1); 7291558Srgrimes } 7301558Srgrimes return (0); 7311558Srgrimes} 7321558Srgrimes 7331558Srgrimes#define LINESIZ 10240 7341558Srgrimeschar line[LINESIZ]; 7351558SrgrimesFILE *exp_file; 7361558Srgrimes 7371558Srgrimes/* 7381558Srgrimes * Get the export list 7391558Srgrimes */ 7401558Srgrimesvoid 7411558Srgrimesget_exportlist() 7421558Srgrimes{ 7431558Srgrimes struct exportlist *ep, *ep2; 7441558Srgrimes struct grouplist *grp, *tgrp; 7451558Srgrimes struct exportlist **epp; 7461558Srgrimes struct dirlist *dirhead; 7471558Srgrimes struct statfs fsb, *fsp; 7481558Srgrimes struct hostent *hpe; 7491558Srgrimes struct ucred anon; 7501558Srgrimes char *cp, *endcp, *dirp, *hst, *usr, *dom, savedc; 7511558Srgrimes int len, has_host, exflags, got_nondir, dirplen, num, i, netgrp; 7521558Srgrimes 75351968Salfred dirp = NULL; 75451968Salfred dirplen = 0; 75551968Salfred 7561558Srgrimes /* 7571558Srgrimes * First, get rid of the old list 7581558Srgrimes */ 7591558Srgrimes ep = exphead; 7601558Srgrimes while (ep) { 7611558Srgrimes ep2 = ep; 7621558Srgrimes ep = ep->ex_next; 7631558Srgrimes free_exp(ep2); 7641558Srgrimes } 7651558Srgrimes exphead = (struct exportlist *)NULL; 7661558Srgrimes 7671558Srgrimes grp = grphead; 7681558Srgrimes while (grp) { 7691558Srgrimes tgrp = grp; 7701558Srgrimes grp = grp->gr_next; 7711558Srgrimes free_grp(tgrp); 7721558Srgrimes } 7731558Srgrimes grphead = (struct grouplist *)NULL; 7741558Srgrimes 7751558Srgrimes /* 7761558Srgrimes * And delete exports that are in the kernel for all local 7771558Srgrimes * file systems. 7781558Srgrimes * XXX: Should know how to handle all local exportable file systems 77923681Speter * instead of just "ufs". 7801558Srgrimes */ 7811558Srgrimes num = getmntinfo(&fsp, MNT_NOWAIT); 7821558Srgrimes for (i = 0; i < num; i++) { 7831558Srgrimes union { 7841558Srgrimes struct ufs_args ua; 7851558Srgrimes struct iso_args ia; 7861558Srgrimes struct mfs_args ma; 7879336Sdfr struct msdosfs_args da; 7881558Srgrimes } targs; 7891558Srgrimes 79023681Speter if (!strcmp(fsp->f_fstypename, "mfs") || 79123681Speter !strcmp(fsp->f_fstypename, "ufs") || 79223681Speter !strcmp(fsp->f_fstypename, "msdos") || 79323681Speter !strcmp(fsp->f_fstypename, "cd9660")) { 7949336Sdfr targs.ua.fspec = NULL; 7959336Sdfr targs.ua.export.ex_flags = MNT_DELEXPORT; 7969336Sdfr if (mount(fsp->f_fstypename, fsp->f_mntonname, 7971558Srgrimes fsp->f_flags | MNT_UPDATE, 7981558Srgrimes (caddr_t)&targs) < 0) 79937663Scharnier syslog(LOG_ERR, "can't delete exports for %s", 8001558Srgrimes fsp->f_mntonname); 8011558Srgrimes } 8021558Srgrimes fsp++; 8031558Srgrimes } 8041558Srgrimes 8051558Srgrimes /* 8061558Srgrimes * Read in the exports file and build the list, calling 8071558Srgrimes * mount() as we go along to push the export rules into the kernel. 8081558Srgrimes */ 8091558Srgrimes if ((exp_file = fopen(exname, "r")) == NULL) { 81037663Scharnier syslog(LOG_ERR, "can't open %s", exname); 8111558Srgrimes exit(2); 8121558Srgrimes } 8131558Srgrimes dirhead = (struct dirlist *)NULL; 8141558Srgrimes while (get_line()) { 8151558Srgrimes if (debug) 81637663Scharnier warnx("got line %s", line); 8171558Srgrimes cp = line; 8181558Srgrimes nextfield(&cp, &endcp); 8191558Srgrimes if (*cp == '#') 8201558Srgrimes goto nextline; 8211558Srgrimes 8221558Srgrimes /* 8231558Srgrimes * Set defaults. 8241558Srgrimes */ 8251558Srgrimes has_host = FALSE; 8261558Srgrimes anon = def_anon; 8271558Srgrimes exflags = MNT_EXPORTED; 8281558Srgrimes got_nondir = 0; 8291558Srgrimes opt_flags = 0; 8301558Srgrimes ep = (struct exportlist *)NULL; 8311558Srgrimes 8321558Srgrimes /* 8331558Srgrimes * Create new exports list entry 8341558Srgrimes */ 8351558Srgrimes len = endcp-cp; 8361558Srgrimes tgrp = grp = get_grp(); 8371558Srgrimes while (len > 0) { 8381558Srgrimes if (len > RPCMNT_NAMELEN) { 8391558Srgrimes getexp_err(ep, tgrp); 8401558Srgrimes goto nextline; 8411558Srgrimes } 8421558Srgrimes if (*cp == '-') { 8431558Srgrimes if (ep == (struct exportlist *)NULL) { 8441558Srgrimes getexp_err(ep, tgrp); 8451558Srgrimes goto nextline; 8461558Srgrimes } 8471558Srgrimes if (debug) 84837663Scharnier warnx("doing opt %s", cp); 8491558Srgrimes got_nondir = 1; 8501558Srgrimes if (do_opt(&cp, &endcp, ep, grp, &has_host, 8511558Srgrimes &exflags, &anon)) { 8521558Srgrimes getexp_err(ep, tgrp); 8531558Srgrimes goto nextline; 8541558Srgrimes } 8551558Srgrimes } else if (*cp == '/') { 8561558Srgrimes savedc = *endcp; 8571558Srgrimes *endcp = '\0'; 8581558Srgrimes if (check_dirpath(cp) && 8591558Srgrimes statfs(cp, &fsb) >= 0) { 8601558Srgrimes if (got_nondir) { 86137663Scharnier syslog(LOG_ERR, "dirs must be first"); 8621558Srgrimes getexp_err(ep, tgrp); 8631558Srgrimes goto nextline; 8641558Srgrimes } 8651558Srgrimes if (ep) { 8661558Srgrimes if (ep->ex_fs.val[0] != fsb.f_fsid.val[0] || 8671558Srgrimes ep->ex_fs.val[1] != fsb.f_fsid.val[1]) { 8681558Srgrimes getexp_err(ep, tgrp); 8691558Srgrimes goto nextline; 8701558Srgrimes } 8711558Srgrimes } else { 8721558Srgrimes /* 8731558Srgrimes * See if this directory is already 8741558Srgrimes * in the list. 8751558Srgrimes */ 8761558Srgrimes ep = ex_search(&fsb.f_fsid); 8771558Srgrimes if (ep == (struct exportlist *)NULL) { 8781558Srgrimes ep = get_exp(); 8791558Srgrimes ep->ex_fs = fsb.f_fsid; 8801558Srgrimes ep->ex_fsdir = (char *) 8811558Srgrimes malloc(strlen(fsb.f_mntonname) + 1); 8821558Srgrimes if (ep->ex_fsdir) 8831558Srgrimes strcpy(ep->ex_fsdir, 8841558Srgrimes fsb.f_mntonname); 8851558Srgrimes else 8861558Srgrimes out_of_mem(); 8871558Srgrimes if (debug) 88837663Scharnier warnx("making new ep fs=0x%x,0x%x", 8891558Srgrimes fsb.f_fsid.val[0], 8901558Srgrimes fsb.f_fsid.val[1]); 8911558Srgrimes } else if (debug) 89237663Scharnier warnx("found ep fs=0x%x,0x%x", 8931558Srgrimes fsb.f_fsid.val[0], 8941558Srgrimes fsb.f_fsid.val[1]); 8951558Srgrimes } 8961558Srgrimes 8971558Srgrimes /* 8981558Srgrimes * Add dirpath to export mount point. 8991558Srgrimes */ 9001558Srgrimes dirp = add_expdir(&dirhead, cp, len); 9011558Srgrimes dirplen = len; 9021558Srgrimes } else { 9031558Srgrimes getexp_err(ep, tgrp); 9041558Srgrimes goto nextline; 9051558Srgrimes } 9061558Srgrimes *endcp = savedc; 9071558Srgrimes } else { 9081558Srgrimes savedc = *endcp; 9091558Srgrimes *endcp = '\0'; 9101558Srgrimes got_nondir = 1; 9111558Srgrimes if (ep == (struct exportlist *)NULL) { 9121558Srgrimes getexp_err(ep, tgrp); 9131558Srgrimes goto nextline; 9141558Srgrimes } 9151558Srgrimes 9161558Srgrimes /* 9171558Srgrimes * Get the host or netgroup. 9181558Srgrimes */ 9191558Srgrimes setnetgrent(cp); 9201558Srgrimes netgrp = getnetgrent(&hst, &usr, &dom); 9211558Srgrimes do { 9221558Srgrimes if (has_host) { 9231558Srgrimes grp->gr_next = get_grp(); 9241558Srgrimes grp = grp->gr_next; 9251558Srgrimes } 9261558Srgrimes if (netgrp) { 92737003Sjoerg if (hst == 0) { 92837663Scharnier syslog(LOG_ERR, 92937663Scharnier "null hostname in netgroup %s, skipping", cp); 93037004Sjoerg grp->gr_type = GT_IGNORE; 93137003Sjoerg } else if (get_host(hst, grp, tgrp)) { 93237663Scharnier syslog(LOG_ERR, 93337663Scharnier "bad host %s in netgroup %s, skipping", hst, cp); 93429317Sjlemon grp->gr_type = GT_IGNORE; 9351558Srgrimes } 9367401Swpaul } else if (get_host(cp, grp, tgrp)) { 93737663Scharnier syslog(LOG_ERR, "bad host %s, skipping", cp); 93829317Sjlemon grp->gr_type = GT_IGNORE; 9391558Srgrimes } 9401558Srgrimes has_host = TRUE; 9411558Srgrimes } while (netgrp && getnetgrent(&hst, &usr, &dom)); 9421558Srgrimes endnetgrent(); 9431558Srgrimes *endcp = savedc; 9441558Srgrimes } 9451558Srgrimes cp = endcp; 9461558Srgrimes nextfield(&cp, &endcp); 9471558Srgrimes len = endcp - cp; 9481558Srgrimes } 9491558Srgrimes if (check_options(dirhead)) { 9501558Srgrimes getexp_err(ep, tgrp); 9511558Srgrimes goto nextline; 9521558Srgrimes } 9531558Srgrimes if (!has_host) { 9541558Srgrimes grp->gr_type = GT_HOST; 9551558Srgrimes if (debug) 95637663Scharnier warnx("adding a default entry"); 9571558Srgrimes /* add a default group and make the grp list NULL */ 9581558Srgrimes hpe = (struct hostent *)malloc(sizeof(struct hostent)); 9591558Srgrimes if (hpe == (struct hostent *)NULL) 9601558Srgrimes out_of_mem(); 96112348Sjoerg hpe->h_name = strdup("Default"); 9621558Srgrimes hpe->h_addrtype = AF_INET; 96342144Sdfr hpe->h_length = sizeof (u_int32_t); 9641558Srgrimes hpe->h_addr_list = (char **)NULL; 9651558Srgrimes grp->gr_ptr.gt_hostent = hpe; 9661558Srgrimes 9671558Srgrimes /* 9681558Srgrimes * Don't allow a network export coincide with a list of 9691558Srgrimes * host(s) on the same line. 9701558Srgrimes */ 9711558Srgrimes } else if ((opt_flags & OP_NET) && tgrp->gr_next) { 9721558Srgrimes getexp_err(ep, tgrp); 9731558Srgrimes goto nextline; 97429317Sjlemon 97529317Sjlemon /* 97629317Sjlemon * If an export list was specified on this line, make sure 97729317Sjlemon * that we have at least one valid entry, otherwise skip it. 97829317Sjlemon */ 97929317Sjlemon } else { 98029317Sjlemon grp = tgrp; 98129317Sjlemon while (grp && grp->gr_type == GT_IGNORE) 98229317Sjlemon grp = grp->gr_next; 98329317Sjlemon if (! grp) { 98429317Sjlemon getexp_err(ep, tgrp); 98529317Sjlemon goto nextline; 98629317Sjlemon } 9871558Srgrimes } 9881558Srgrimes 9891558Srgrimes /* 9901558Srgrimes * Loop through hosts, pushing the exports into the kernel. 9911558Srgrimes * After loop, tgrp points to the start of the list and 9921558Srgrimes * grp points to the last entry in the list. 9931558Srgrimes */ 9941558Srgrimes grp = tgrp; 9951558Srgrimes do { 9961558Srgrimes if (do_mount(ep, grp, exflags, &anon, dirp, 9971558Srgrimes dirplen, &fsb)) { 9981558Srgrimes getexp_err(ep, tgrp); 9991558Srgrimes goto nextline; 10001558Srgrimes } 10011558Srgrimes } while (grp->gr_next && (grp = grp->gr_next)); 10021558Srgrimes 10031558Srgrimes /* 10041558Srgrimes * Success. Update the data structures. 10051558Srgrimes */ 10061558Srgrimes if (has_host) { 10079336Sdfr hang_dirp(dirhead, tgrp, ep, opt_flags); 10081558Srgrimes grp->gr_next = grphead; 10091558Srgrimes grphead = tgrp; 10101558Srgrimes } else { 10111558Srgrimes hang_dirp(dirhead, (struct grouplist *)NULL, ep, 10129336Sdfr opt_flags); 10131558Srgrimes free_grp(grp); 10141558Srgrimes } 10151558Srgrimes dirhead = (struct dirlist *)NULL; 10161558Srgrimes if ((ep->ex_flag & EX_LINKED) == 0) { 10171558Srgrimes ep2 = exphead; 10181558Srgrimes epp = &exphead; 10191558Srgrimes 10201558Srgrimes /* 10211558Srgrimes * Insert in the list in alphabetical order. 10221558Srgrimes */ 10231558Srgrimes while (ep2 && strcmp(ep2->ex_fsdir, ep->ex_fsdir) < 0) { 10241558Srgrimes epp = &ep2->ex_next; 10251558Srgrimes ep2 = ep2->ex_next; 10261558Srgrimes } 10271558Srgrimes if (ep2) 10281558Srgrimes ep->ex_next = ep2; 10291558Srgrimes *epp = ep; 10301558Srgrimes ep->ex_flag |= EX_LINKED; 10311558Srgrimes } 10321558Srgrimesnextline: 10331558Srgrimes if (dirhead) { 10341558Srgrimes free_dir(dirhead); 10351558Srgrimes dirhead = (struct dirlist *)NULL; 10361558Srgrimes } 10371558Srgrimes } 10381558Srgrimes fclose(exp_file); 10391558Srgrimes} 10401558Srgrimes 10411558Srgrimes/* 10421558Srgrimes * Allocate an export list element 10431558Srgrimes */ 10441558Srgrimesstruct exportlist * 10451558Srgrimesget_exp() 10461558Srgrimes{ 10471558Srgrimes struct exportlist *ep; 10481558Srgrimes 10491558Srgrimes ep = (struct exportlist *)malloc(sizeof (struct exportlist)); 10501558Srgrimes if (ep == (struct exportlist *)NULL) 10511558Srgrimes out_of_mem(); 105223681Speter memset(ep, 0, sizeof(struct exportlist)); 10531558Srgrimes return (ep); 10541558Srgrimes} 10551558Srgrimes 10561558Srgrimes/* 10571558Srgrimes * Allocate a group list element 10581558Srgrimes */ 10591558Srgrimesstruct grouplist * 10601558Srgrimesget_grp() 10611558Srgrimes{ 10621558Srgrimes struct grouplist *gp; 10631558Srgrimes 10641558Srgrimes gp = (struct grouplist *)malloc(sizeof (struct grouplist)); 10651558Srgrimes if (gp == (struct grouplist *)NULL) 10661558Srgrimes out_of_mem(); 106723681Speter memset(gp, 0, sizeof(struct grouplist)); 10681558Srgrimes return (gp); 10691558Srgrimes} 10701558Srgrimes 10711558Srgrimes/* 10721558Srgrimes * Clean up upon an error in get_exportlist(). 10731558Srgrimes */ 10741558Srgrimesvoid 10751558Srgrimesgetexp_err(ep, grp) 10761558Srgrimes struct exportlist *ep; 10771558Srgrimes struct grouplist *grp; 10781558Srgrimes{ 10791558Srgrimes struct grouplist *tgrp; 10801558Srgrimes 108137663Scharnier syslog(LOG_ERR, "bad exports list line %s", line); 10821558Srgrimes if (ep && (ep->ex_flag & EX_LINKED) == 0) 10831558Srgrimes free_exp(ep); 10841558Srgrimes while (grp) { 10851558Srgrimes tgrp = grp; 10861558Srgrimes grp = grp->gr_next; 10871558Srgrimes free_grp(tgrp); 10881558Srgrimes } 10891558Srgrimes} 10901558Srgrimes 10911558Srgrimes/* 10921558Srgrimes * Search the export list for a matching fs. 10931558Srgrimes */ 10941558Srgrimesstruct exportlist * 10951558Srgrimesex_search(fsid) 10961558Srgrimes fsid_t *fsid; 10971558Srgrimes{ 10981558Srgrimes struct exportlist *ep; 10991558Srgrimes 11001558Srgrimes ep = exphead; 11011558Srgrimes while (ep) { 11021558Srgrimes if (ep->ex_fs.val[0] == fsid->val[0] && 11031558Srgrimes ep->ex_fs.val[1] == fsid->val[1]) 11041558Srgrimes return (ep); 11051558Srgrimes ep = ep->ex_next; 11061558Srgrimes } 11071558Srgrimes return (ep); 11081558Srgrimes} 11091558Srgrimes 11101558Srgrimes/* 11111558Srgrimes * Add a directory path to the list. 11121558Srgrimes */ 11131558Srgrimeschar * 11141558Srgrimesadd_expdir(dpp, cp, len) 11151558Srgrimes struct dirlist **dpp; 11161558Srgrimes char *cp; 11171558Srgrimes int len; 11181558Srgrimes{ 11191558Srgrimes struct dirlist *dp; 11201558Srgrimes 11211558Srgrimes dp = (struct dirlist *)malloc(sizeof (struct dirlist) + len); 112237663Scharnier if (dp == (struct dirlist *)NULL) 112337663Scharnier out_of_mem(); 11241558Srgrimes dp->dp_left = *dpp; 11251558Srgrimes dp->dp_right = (struct dirlist *)NULL; 11261558Srgrimes dp->dp_flag = 0; 11271558Srgrimes dp->dp_hosts = (struct hostlist *)NULL; 11281558Srgrimes strcpy(dp->dp_dirp, cp); 11291558Srgrimes *dpp = dp; 11301558Srgrimes return (dp->dp_dirp); 11311558Srgrimes} 11321558Srgrimes 11331558Srgrimes/* 11341558Srgrimes * Hang the dir list element off the dirpath binary tree as required 11351558Srgrimes * and update the entry for host. 11361558Srgrimes */ 11371558Srgrimesvoid 11389336Sdfrhang_dirp(dp, grp, ep, flags) 11391558Srgrimes struct dirlist *dp; 11401558Srgrimes struct grouplist *grp; 11411558Srgrimes struct exportlist *ep; 11429336Sdfr int flags; 11431558Srgrimes{ 11441558Srgrimes struct hostlist *hp; 11451558Srgrimes struct dirlist *dp2; 11461558Srgrimes 11479336Sdfr if (flags & OP_ALLDIRS) { 11481558Srgrimes if (ep->ex_defdir) 11491558Srgrimes free((caddr_t)dp); 11501558Srgrimes else 11511558Srgrimes ep->ex_defdir = dp; 11529336Sdfr if (grp == (struct grouplist *)NULL) { 11531558Srgrimes ep->ex_defdir->dp_flag |= DP_DEFSET; 11549336Sdfr if (flags & OP_KERB) 11559336Sdfr ep->ex_defdir->dp_flag |= DP_KERB; 11569336Sdfr } else while (grp) { 11571558Srgrimes hp = get_ht(); 11589336Sdfr if (flags & OP_KERB) 11599336Sdfr hp->ht_flag |= DP_KERB; 11601558Srgrimes hp->ht_grp = grp; 11611558Srgrimes hp->ht_next = ep->ex_defdir->dp_hosts; 11621558Srgrimes ep->ex_defdir->dp_hosts = hp; 11631558Srgrimes grp = grp->gr_next; 11641558Srgrimes } 11651558Srgrimes } else { 11661558Srgrimes 11671558Srgrimes /* 116837663Scharnier * Loop through the directories adding them to the tree. 11691558Srgrimes */ 11701558Srgrimes while (dp) { 11711558Srgrimes dp2 = dp->dp_left; 11729336Sdfr add_dlist(&ep->ex_dirl, dp, grp, flags); 11731558Srgrimes dp = dp2; 11741558Srgrimes } 11751558Srgrimes } 11761558Srgrimes} 11771558Srgrimes 11781558Srgrimes/* 11791558Srgrimes * Traverse the binary tree either updating a node that is already there 11801558Srgrimes * for the new directory or adding the new node. 11811558Srgrimes */ 11821558Srgrimesvoid 11839336Sdfradd_dlist(dpp, newdp, grp, flags) 11841558Srgrimes struct dirlist **dpp; 11851558Srgrimes struct dirlist *newdp; 11861558Srgrimes struct grouplist *grp; 11879336Sdfr int flags; 11881558Srgrimes{ 11891558Srgrimes struct dirlist *dp; 11901558Srgrimes struct hostlist *hp; 11911558Srgrimes int cmp; 11921558Srgrimes 11931558Srgrimes dp = *dpp; 11941558Srgrimes if (dp) { 11951558Srgrimes cmp = strcmp(dp->dp_dirp, newdp->dp_dirp); 11961558Srgrimes if (cmp > 0) { 11979336Sdfr add_dlist(&dp->dp_left, newdp, grp, flags); 11981558Srgrimes return; 11991558Srgrimes } else if (cmp < 0) { 12009336Sdfr add_dlist(&dp->dp_right, newdp, grp, flags); 12011558Srgrimes return; 12021558Srgrimes } else 12031558Srgrimes free((caddr_t)newdp); 12041558Srgrimes } else { 12051558Srgrimes dp = newdp; 12061558Srgrimes dp->dp_left = (struct dirlist *)NULL; 12071558Srgrimes *dpp = dp; 12081558Srgrimes } 12091558Srgrimes if (grp) { 12101558Srgrimes 12111558Srgrimes /* 12121558Srgrimes * Hang all of the host(s) off of the directory point. 12131558Srgrimes */ 12141558Srgrimes do { 12151558Srgrimes hp = get_ht(); 12169336Sdfr if (flags & OP_KERB) 12179336Sdfr hp->ht_flag |= DP_KERB; 12181558Srgrimes hp->ht_grp = grp; 12191558Srgrimes hp->ht_next = dp->dp_hosts; 12201558Srgrimes dp->dp_hosts = hp; 12211558Srgrimes grp = grp->gr_next; 12221558Srgrimes } while (grp); 12239336Sdfr } else { 12241558Srgrimes dp->dp_flag |= DP_DEFSET; 12259336Sdfr if (flags & OP_KERB) 12269336Sdfr dp->dp_flag |= DP_KERB; 12279336Sdfr } 12281558Srgrimes} 12291558Srgrimes 12301558Srgrimes/* 12311558Srgrimes * Search for a dirpath on the export point. 12321558Srgrimes */ 12331558Srgrimesstruct dirlist * 12341558Srgrimesdirp_search(dp, dirpath) 12351558Srgrimes struct dirlist *dp; 12361558Srgrimes char *dirpath; 12371558Srgrimes{ 12381558Srgrimes int cmp; 12391558Srgrimes 12401558Srgrimes if (dp) { 12411558Srgrimes cmp = strcmp(dp->dp_dirp, dirpath); 12421558Srgrimes if (cmp > 0) 12431558Srgrimes return (dirp_search(dp->dp_left, dirpath)); 12441558Srgrimes else if (cmp < 0) 12451558Srgrimes return (dirp_search(dp->dp_right, dirpath)); 12461558Srgrimes else 12471558Srgrimes return (dp); 12481558Srgrimes } 12491558Srgrimes return (dp); 12501558Srgrimes} 12511558Srgrimes 12521558Srgrimes/* 12531558Srgrimes * Scan for a host match in a directory tree. 12541558Srgrimes */ 12551558Srgrimesint 12569336Sdfrchk_host(dp, saddr, defsetp, hostsetp) 12571558Srgrimes struct dirlist *dp; 125842144Sdfr u_int32_t saddr; 12591558Srgrimes int *defsetp; 12609336Sdfr int *hostsetp; 12611558Srgrimes{ 12621558Srgrimes struct hostlist *hp; 12631558Srgrimes struct grouplist *grp; 126442144Sdfr u_int32_t **addrp; 12651558Srgrimes 12661558Srgrimes if (dp) { 12671558Srgrimes if (dp->dp_flag & DP_DEFSET) 12689336Sdfr *defsetp = dp->dp_flag; 12691558Srgrimes hp = dp->dp_hosts; 12701558Srgrimes while (hp) { 12711558Srgrimes grp = hp->ht_grp; 12721558Srgrimes switch (grp->gr_type) { 12731558Srgrimes case GT_HOST: 127442144Sdfr addrp = (u_int32_t **) 12751558Srgrimes grp->gr_ptr.gt_hostent->h_addr_list; 12761558Srgrimes while (*addrp) { 12779336Sdfr if (**addrp == saddr) { 12789336Sdfr *hostsetp = (hp->ht_flag | DP_HOSTSET); 12791558Srgrimes return (1); 12809336Sdfr } 12811558Srgrimes addrp++; 12821558Srgrimes } 12831558Srgrimes break; 12841558Srgrimes case GT_NET: 12851558Srgrimes if ((saddr & grp->gr_ptr.gt_net.nt_mask) == 12869336Sdfr grp->gr_ptr.gt_net.nt_net) { 12879336Sdfr *hostsetp = (hp->ht_flag | DP_HOSTSET); 12881558Srgrimes return (1); 12899336Sdfr } 12901558Srgrimes break; 12911558Srgrimes }; 12921558Srgrimes hp = hp->ht_next; 12931558Srgrimes } 12941558Srgrimes } 12951558Srgrimes return (0); 12961558Srgrimes} 12971558Srgrimes 12981558Srgrimes/* 12991558Srgrimes * Scan tree for a host that matches the address. 13001558Srgrimes */ 13011558Srgrimesint 13021558Srgrimesscan_tree(dp, saddr) 13031558Srgrimes struct dirlist *dp; 130442144Sdfr u_int32_t saddr; 13051558Srgrimes{ 13069336Sdfr int defset, hostset; 13071558Srgrimes 13081558Srgrimes if (dp) { 13091558Srgrimes if (scan_tree(dp->dp_left, saddr)) 13101558Srgrimes return (1); 13119336Sdfr if (chk_host(dp, saddr, &defset, &hostset)) 13121558Srgrimes return (1); 13131558Srgrimes if (scan_tree(dp->dp_right, saddr)) 13141558Srgrimes return (1); 13151558Srgrimes } 13161558Srgrimes return (0); 13171558Srgrimes} 13181558Srgrimes 13191558Srgrimes/* 13201558Srgrimes * Traverse the dirlist tree and free it up. 13211558Srgrimes */ 13221558Srgrimesvoid 13231558Srgrimesfree_dir(dp) 13241558Srgrimes struct dirlist *dp; 13251558Srgrimes{ 13261558Srgrimes 13271558Srgrimes if (dp) { 13281558Srgrimes free_dir(dp->dp_left); 13291558Srgrimes free_dir(dp->dp_right); 13301558Srgrimes free_host(dp->dp_hosts); 13311558Srgrimes free((caddr_t)dp); 13321558Srgrimes } 13331558Srgrimes} 13341558Srgrimes 13351558Srgrimes/* 13361558Srgrimes * Parse the option string and update fields. 13371558Srgrimes * Option arguments may either be -<option>=<value> or 13381558Srgrimes * -<option> <value> 13391558Srgrimes */ 13401558Srgrimesint 13411558Srgrimesdo_opt(cpp, endcpp, ep, grp, has_hostp, exflagsp, cr) 13421558Srgrimes char **cpp, **endcpp; 13431558Srgrimes struct exportlist *ep; 13441558Srgrimes struct grouplist *grp; 13451558Srgrimes int *has_hostp; 13461558Srgrimes int *exflagsp; 13471558Srgrimes struct ucred *cr; 13481558Srgrimes{ 13491558Srgrimes char *cpoptarg, *cpoptend; 13501558Srgrimes char *cp, *endcp, *cpopt, savedc, savedc2; 13511558Srgrimes int allflag, usedarg; 13521558Srgrimes 135351968Salfred savedc2 = '\0'; 13541558Srgrimes cpopt = *cpp; 13551558Srgrimes cpopt++; 13561558Srgrimes cp = *endcpp; 13571558Srgrimes savedc = *cp; 13581558Srgrimes *cp = '\0'; 13591558Srgrimes while (cpopt && *cpopt) { 13601558Srgrimes allflag = 1; 13611558Srgrimes usedarg = -2; 136237663Scharnier if ((cpoptend = strchr(cpopt, ','))) { 13631558Srgrimes *cpoptend++ = '\0'; 136437663Scharnier if ((cpoptarg = strchr(cpopt, '='))) 13651558Srgrimes *cpoptarg++ = '\0'; 13661558Srgrimes } else { 136737663Scharnier if ((cpoptarg = strchr(cpopt, '='))) 13681558Srgrimes *cpoptarg++ = '\0'; 13691558Srgrimes else { 13701558Srgrimes *cp = savedc; 13711558Srgrimes nextfield(&cp, &endcp); 13721558Srgrimes **endcpp = '\0'; 13731558Srgrimes if (endcp > cp && *cp != '-') { 13741558Srgrimes cpoptarg = cp; 13751558Srgrimes savedc2 = *endcp; 13761558Srgrimes *endcp = '\0'; 13771558Srgrimes usedarg = 0; 13781558Srgrimes } 13791558Srgrimes } 13801558Srgrimes } 13811558Srgrimes if (!strcmp(cpopt, "ro") || !strcmp(cpopt, "o")) { 13821558Srgrimes *exflagsp |= MNT_EXRDONLY; 13831558Srgrimes } else if (cpoptarg && (!strcmp(cpopt, "maproot") || 13841558Srgrimes !(allflag = strcmp(cpopt, "mapall")) || 13851558Srgrimes !strcmp(cpopt, "root") || !strcmp(cpopt, "r"))) { 13861558Srgrimes usedarg++; 13871558Srgrimes parsecred(cpoptarg, cr); 13881558Srgrimes if (allflag == 0) { 13891558Srgrimes *exflagsp |= MNT_EXPORTANON; 13901558Srgrimes opt_flags |= OP_MAPALL; 13911558Srgrimes } else 13921558Srgrimes opt_flags |= OP_MAPROOT; 13931558Srgrimes } else if (!strcmp(cpopt, "kerb") || !strcmp(cpopt, "k")) { 13941558Srgrimes *exflagsp |= MNT_EXKERB; 13951558Srgrimes opt_flags |= OP_KERB; 13961558Srgrimes } else if (cpoptarg && (!strcmp(cpopt, "mask") || 13971558Srgrimes !strcmp(cpopt, "m"))) { 13981558Srgrimes if (get_net(cpoptarg, &grp->gr_ptr.gt_net, 1)) { 139937663Scharnier syslog(LOG_ERR, "bad mask: %s", cpoptarg); 14001558Srgrimes return (1); 14011558Srgrimes } 14021558Srgrimes usedarg++; 14031558Srgrimes opt_flags |= OP_MASK; 14041558Srgrimes } else if (cpoptarg && (!strcmp(cpopt, "network") || 14051558Srgrimes !strcmp(cpopt, "n"))) { 14061558Srgrimes if (grp->gr_type != GT_NULL) { 140737663Scharnier syslog(LOG_ERR, "network/host conflict"); 14081558Srgrimes return (1); 14091558Srgrimes } else if (get_net(cpoptarg, &grp->gr_ptr.gt_net, 0)) { 141037663Scharnier syslog(LOG_ERR, "bad net: %s", cpoptarg); 14111558Srgrimes return (1); 14121558Srgrimes } 14131558Srgrimes grp->gr_type = GT_NET; 14141558Srgrimes *has_hostp = 1; 14151558Srgrimes usedarg++; 14161558Srgrimes opt_flags |= OP_NET; 14171558Srgrimes } else if (!strcmp(cpopt, "alldirs")) { 14181558Srgrimes opt_flags |= OP_ALLDIRS; 141927447Sdfr } else if (!strcmp(cpopt, "public")) { 142027447Sdfr *exflagsp |= MNT_EXPUBLIC; 142127447Sdfr } else if (!strcmp(cpopt, "webnfs")) { 142227447Sdfr *exflagsp |= (MNT_EXPUBLIC|MNT_EXRDONLY|MNT_EXPORTANON); 142327447Sdfr opt_flags |= OP_MAPALL; 142427447Sdfr } else if (cpoptarg && !strcmp(cpopt, "index")) { 142527447Sdfr ep->ex_indexfile = strdup(cpoptarg); 14261558Srgrimes#ifdef ISO 14271558Srgrimes } else if (cpoptarg && !strcmp(cpopt, "iso")) { 14281558Srgrimes if (get_isoaddr(cpoptarg, grp)) { 142937663Scharnier syslog(LOG_ERR, "bad iso addr: %s", cpoptarg); 14301558Srgrimes return (1); 14311558Srgrimes } 14321558Srgrimes *has_hostp = 1; 14331558Srgrimes usedarg++; 14341558Srgrimes opt_flags |= OP_ISO; 14351558Srgrimes#endif /* ISO */ 14361558Srgrimes } else { 143737663Scharnier syslog(LOG_ERR, "bad opt %s", cpopt); 14381558Srgrimes return (1); 14391558Srgrimes } 14401558Srgrimes if (usedarg >= 0) { 14411558Srgrimes *endcp = savedc2; 14421558Srgrimes **endcpp = savedc; 14431558Srgrimes if (usedarg > 0) { 14441558Srgrimes *cpp = cp; 14451558Srgrimes *endcpp = endcp; 14461558Srgrimes } 14471558Srgrimes return (0); 14481558Srgrimes } 14491558Srgrimes cpopt = cpoptend; 14501558Srgrimes } 14511558Srgrimes **endcpp = savedc; 14521558Srgrimes return (0); 14531558Srgrimes} 14541558Srgrimes 14551558Srgrimes/* 14561558Srgrimes * Translate a character string to the corresponding list of network 14571558Srgrimes * addresses for a hostname. 14581558Srgrimes */ 14591558Srgrimesint 14607401Swpaulget_host(cp, grp, tgrp) 14611558Srgrimes char *cp; 14621558Srgrimes struct grouplist *grp; 14637401Swpaul struct grouplist *tgrp; 14641558Srgrimes{ 14657401Swpaul struct grouplist *checkgrp; 14661558Srgrimes struct hostent *hp, *nhp; 14671558Srgrimes char **addrp, **naddrp; 14681558Srgrimes struct hostent t_host; 14691558Srgrimes int i; 147042144Sdfr u_int32_t saddr; 14711558Srgrimes char *aptr[2]; 14721558Srgrimes 14731558Srgrimes if (grp->gr_type != GT_NULL) 14741558Srgrimes return (1); 14751558Srgrimes if ((hp = gethostbyname(cp)) == NULL) { 14761558Srgrimes if (isdigit(*cp)) { 14771558Srgrimes saddr = inet_addr(cp); 14781558Srgrimes if (saddr == -1) { 147937663Scharnier syslog(LOG_ERR, "inet_addr failed for %s", cp); 14801558Srgrimes return (1); 14811558Srgrimes } 14821558Srgrimes if ((hp = gethostbyaddr((caddr_t)&saddr, sizeof (saddr), 14831558Srgrimes AF_INET)) == NULL) { 14841558Srgrimes hp = &t_host; 14851558Srgrimes hp->h_name = cp; 14861558Srgrimes hp->h_addrtype = AF_INET; 148742144Sdfr hp->h_length = sizeof (u_int32_t); 14881558Srgrimes hp->h_addr_list = aptr; 14891558Srgrimes aptr[0] = (char *)&saddr; 14901558Srgrimes aptr[1] = (char *)NULL; 14911558Srgrimes } 14921558Srgrimes } else { 149337663Scharnier syslog(LOG_ERR, "gethostbyname failed for %s", cp); 14941558Srgrimes return (1); 14951558Srgrimes } 14961558Srgrimes } 14977401Swpaul /* 14987401Swpaul * Sanity check: make sure we don't already have an entry 14997401Swpaul * for this host in the grouplist. 15007401Swpaul */ 15017401Swpaul checkgrp = tgrp; 150237157Swpaul while (checkgrp != NULL) { 150317887Swpaul if (checkgrp->gr_type == GT_HOST && 150417887Swpaul checkgrp->gr_ptr.gt_hostent != NULL && 150537157Swpaul (!strcmp(checkgrp->gr_ptr.gt_hostent->h_name, hp->h_name) 150642144Sdfr || *(u_int32_t *)checkgrp->gr_ptr.gt_hostent->h_addr == 150742144Sdfr *(u_int32_t *)hp->h_addr)) { 15087401Swpaul grp->gr_type = GT_IGNORE; 15097401Swpaul return(0); 15107401Swpaul } 15117401Swpaul checkgrp = checkgrp->gr_next; 15127401Swpaul } 15137401Swpaul 15141558Srgrimes grp->gr_type = GT_HOST; 15151558Srgrimes nhp = grp->gr_ptr.gt_hostent = (struct hostent *) 15161558Srgrimes malloc(sizeof(struct hostent)); 15171558Srgrimes if (nhp == (struct hostent *)NULL) 15181558Srgrimes out_of_mem(); 151923681Speter memmove(nhp, hp, sizeof(struct hostent)); 15201558Srgrimes i = strlen(hp->h_name)+1; 15211558Srgrimes nhp->h_name = (char *)malloc(i); 15221558Srgrimes if (nhp->h_name == (char *)NULL) 15231558Srgrimes out_of_mem(); 152423681Speter memmove(nhp->h_name, hp->h_name, i); 15251558Srgrimes addrp = hp->h_addr_list; 15261558Srgrimes i = 1; 15271558Srgrimes while (*addrp++) 15281558Srgrimes i++; 152937663Scharnier naddrp = nhp->h_addr_list = (char **)malloc(i*sizeof(char *)); 15301558Srgrimes if (naddrp == (char **)NULL) 15311558Srgrimes out_of_mem(); 15321558Srgrimes addrp = hp->h_addr_list; 15331558Srgrimes while (*addrp) { 153437663Scharnier *naddrp = (char *)malloc(hp->h_length); 15351558Srgrimes if (*naddrp == (char *)NULL) 15361558Srgrimes out_of_mem(); 153723681Speter memmove(*naddrp, *addrp, hp->h_length); 15381558Srgrimes addrp++; 15391558Srgrimes naddrp++; 15401558Srgrimes } 15411558Srgrimes *naddrp = (char *)NULL; 15421558Srgrimes if (debug) 154337663Scharnier warnx("got host %s", hp->h_name); 15441558Srgrimes return (0); 15451558Srgrimes} 15461558Srgrimes 15471558Srgrimes/* 15481558Srgrimes * Free up an exports list component 15491558Srgrimes */ 15501558Srgrimesvoid 15511558Srgrimesfree_exp(ep) 15521558Srgrimes struct exportlist *ep; 15531558Srgrimes{ 15541558Srgrimes 15551558Srgrimes if (ep->ex_defdir) { 15561558Srgrimes free_host(ep->ex_defdir->dp_hosts); 15571558Srgrimes free((caddr_t)ep->ex_defdir); 15581558Srgrimes } 15591558Srgrimes if (ep->ex_fsdir) 15601558Srgrimes free(ep->ex_fsdir); 156127447Sdfr if (ep->ex_indexfile) 156227447Sdfr free(ep->ex_indexfile); 15631558Srgrimes free_dir(ep->ex_dirl); 15641558Srgrimes free((caddr_t)ep); 15651558Srgrimes} 15661558Srgrimes 15671558Srgrimes/* 15681558Srgrimes * Free hosts. 15691558Srgrimes */ 15701558Srgrimesvoid 15711558Srgrimesfree_host(hp) 15721558Srgrimes struct hostlist *hp; 15731558Srgrimes{ 15741558Srgrimes struct hostlist *hp2; 15751558Srgrimes 15761558Srgrimes while (hp) { 15771558Srgrimes hp2 = hp; 15781558Srgrimes hp = hp->ht_next; 15791558Srgrimes free((caddr_t)hp2); 15801558Srgrimes } 15811558Srgrimes} 15821558Srgrimes 15831558Srgrimesstruct hostlist * 15841558Srgrimesget_ht() 15851558Srgrimes{ 15861558Srgrimes struct hostlist *hp; 15871558Srgrimes 15881558Srgrimes hp = (struct hostlist *)malloc(sizeof (struct hostlist)); 15891558Srgrimes if (hp == (struct hostlist *)NULL) 15901558Srgrimes out_of_mem(); 15911558Srgrimes hp->ht_next = (struct hostlist *)NULL; 15929336Sdfr hp->ht_flag = 0; 15931558Srgrimes return (hp); 15941558Srgrimes} 15951558Srgrimes 15961558Srgrimes#ifdef ISO 15971558Srgrimes/* 15981558Srgrimes * Translate an iso address. 15991558Srgrimes */ 16001558Srgrimesget_isoaddr(cp, grp) 16011558Srgrimes char *cp; 16021558Srgrimes struct grouplist *grp; 16031558Srgrimes{ 16041558Srgrimes struct iso_addr *isop; 16051558Srgrimes struct sockaddr_iso *isoaddr; 16061558Srgrimes 16071558Srgrimes if (grp->gr_type != GT_NULL) 16081558Srgrimes return (1); 16091558Srgrimes if ((isop = iso_addr(cp)) == NULL) { 161037663Scharnier syslog(LOG_ERR, "iso_addr failed, ignored"); 16111558Srgrimes return (1); 16121558Srgrimes } 161337663Scharnier isoaddr = (struct sockaddr_iso *)malloc(sizeof (struct sockaddr_iso)); 16141558Srgrimes if (isoaddr == (struct sockaddr_iso *)NULL) 16151558Srgrimes out_of_mem(); 161623681Speter memset(isoaddr, 0, sizeof(struct sockaddr_iso)); 161723681Speter memmove(&isoaddr->siso_addr, isop, sizeof(struct iso_addr)); 161823681Speter isoaddr->siso_len = sizeof(struct sockaddr_iso); 16191558Srgrimes isoaddr->siso_family = AF_ISO; 16201558Srgrimes grp->gr_type = GT_ISO; 16211558Srgrimes grp->gr_ptr.gt_isoaddr = isoaddr; 16221558Srgrimes return (0); 16231558Srgrimes} 16241558Srgrimes#endif /* ISO */ 16251558Srgrimes 16261558Srgrimes/* 16271558Srgrimes * Out of memory, fatal 16281558Srgrimes */ 16291558Srgrimesvoid 16301558Srgrimesout_of_mem() 16311558Srgrimes{ 16321558Srgrimes 163337663Scharnier syslog(LOG_ERR, "out of memory"); 16341558Srgrimes exit(2); 16351558Srgrimes} 16361558Srgrimes 16371558Srgrimes/* 16381558Srgrimes * Do the mount syscall with the update flag to push the export info into 16391558Srgrimes * the kernel. 16401558Srgrimes */ 16411558Srgrimesint 16421558Srgrimesdo_mount(ep, grp, exflags, anoncrp, dirp, dirplen, fsb) 16431558Srgrimes struct exportlist *ep; 16441558Srgrimes struct grouplist *grp; 16451558Srgrimes int exflags; 16461558Srgrimes struct ucred *anoncrp; 16471558Srgrimes char *dirp; 16481558Srgrimes int dirplen; 16491558Srgrimes struct statfs *fsb; 16501558Srgrimes{ 16511558Srgrimes char *cp = (char *)NULL; 165242144Sdfr u_int32_t **addrp; 16531558Srgrimes int done; 16541558Srgrimes char savedc = '\0'; 16551558Srgrimes struct sockaddr_in sin, imask; 16561558Srgrimes union { 16571558Srgrimes struct ufs_args ua; 16581558Srgrimes struct iso_args ia; 16591558Srgrimes struct mfs_args ma; 16609336Sdfr#ifdef __NetBSD__ 16619336Sdfr struct msdosfs_args da; 16629336Sdfr#endif 16631558Srgrimes } args; 166442144Sdfr u_int32_t net; 16651558Srgrimes 16661558Srgrimes args.ua.fspec = 0; 16671558Srgrimes args.ua.export.ex_flags = exflags; 16681558Srgrimes args.ua.export.ex_anon = *anoncrp; 166927447Sdfr args.ua.export.ex_indexfile = ep->ex_indexfile; 167023681Speter memset(&sin, 0, sizeof(sin)); 167123681Speter memset(&imask, 0, sizeof(imask)); 16721558Srgrimes sin.sin_family = AF_INET; 16731558Srgrimes sin.sin_len = sizeof(sin); 16741558Srgrimes imask.sin_family = AF_INET; 16751558Srgrimes imask.sin_len = sizeof(sin); 16761558Srgrimes if (grp->gr_type == GT_HOST) 167742144Sdfr addrp = (u_int32_t **)grp->gr_ptr.gt_hostent->h_addr_list; 16781558Srgrimes else 167942144Sdfr addrp = (u_int32_t **)NULL; 16801558Srgrimes done = FALSE; 16811558Srgrimes while (!done) { 16821558Srgrimes switch (grp->gr_type) { 16831558Srgrimes case GT_HOST: 16841558Srgrimes if (addrp) { 16851558Srgrimes sin.sin_addr.s_addr = **addrp; 16861558Srgrimes args.ua.export.ex_addrlen = sizeof(sin); 16871558Srgrimes } else 16881558Srgrimes args.ua.export.ex_addrlen = 0; 16891558Srgrimes args.ua.export.ex_addr = (struct sockaddr *)&sin; 16901558Srgrimes args.ua.export.ex_masklen = 0; 16911558Srgrimes break; 16921558Srgrimes case GT_NET: 16931558Srgrimes if (grp->gr_ptr.gt_net.nt_mask) 16941558Srgrimes imask.sin_addr.s_addr = grp->gr_ptr.gt_net.nt_mask; 16951558Srgrimes else { 16961558Srgrimes net = ntohl(grp->gr_ptr.gt_net.nt_net); 16971558Srgrimes if (IN_CLASSA(net)) 16981558Srgrimes imask.sin_addr.s_addr = inet_addr("255.0.0.0"); 16991558Srgrimes else if (IN_CLASSB(net)) 17001558Srgrimes imask.sin_addr.s_addr = 17011558Srgrimes inet_addr("255.255.0.0"); 17021558Srgrimes else 17031558Srgrimes imask.sin_addr.s_addr = 17041558Srgrimes inet_addr("255.255.255.0"); 17051558Srgrimes grp->gr_ptr.gt_net.nt_mask = imask.sin_addr.s_addr; 17061558Srgrimes } 17071558Srgrimes sin.sin_addr.s_addr = grp->gr_ptr.gt_net.nt_net; 17081558Srgrimes args.ua.export.ex_addr = (struct sockaddr *)&sin; 17091558Srgrimes args.ua.export.ex_addrlen = sizeof (sin); 17101558Srgrimes args.ua.export.ex_mask = (struct sockaddr *)&imask; 17111558Srgrimes args.ua.export.ex_masklen = sizeof (imask); 17121558Srgrimes break; 17131558Srgrimes#ifdef ISO 17141558Srgrimes case GT_ISO: 17151558Srgrimes args.ua.export.ex_addr = 17161558Srgrimes (struct sockaddr *)grp->gr_ptr.gt_isoaddr; 17171558Srgrimes args.ua.export.ex_addrlen = 17181558Srgrimes sizeof(struct sockaddr_iso); 17191558Srgrimes args.ua.export.ex_masklen = 0; 17201558Srgrimes break; 17211558Srgrimes#endif /* ISO */ 17227401Swpaul case GT_IGNORE: 17237401Swpaul return(0); 17247401Swpaul break; 17251558Srgrimes default: 172637663Scharnier syslog(LOG_ERR, "bad grouptype"); 17271558Srgrimes if (cp) 17281558Srgrimes *cp = savedc; 17291558Srgrimes return (1); 17301558Srgrimes }; 17311558Srgrimes 17321558Srgrimes /* 17331558Srgrimes * XXX: 17341558Srgrimes * Maybe I should just use the fsb->f_mntonname path instead 17351558Srgrimes * of looping back up the dirp to the mount point?? 17361558Srgrimes * Also, needs to know how to export all types of local 173723681Speter * exportable file systems and not just "ufs". 17381558Srgrimes */ 17399336Sdfr while (mount(fsb->f_fstypename, dirp, 17401558Srgrimes fsb->f_flags | MNT_UPDATE, (caddr_t)&args) < 0) { 17411558Srgrimes if (cp) 17421558Srgrimes *cp-- = savedc; 17431558Srgrimes else 17441558Srgrimes cp = dirp + dirplen - 1; 17451558Srgrimes if (errno == EPERM) { 17461558Srgrimes syslog(LOG_ERR, 174737663Scharnier "can't change attributes for %s", dirp); 17481558Srgrimes return (1); 17491558Srgrimes } 17501558Srgrimes if (opt_flags & OP_ALLDIRS) { 175137663Scharnier syslog(LOG_ERR, "could not remount %s: %m", 17524895Swollman dirp); 17531558Srgrimes return (1); 17541558Srgrimes } 17551558Srgrimes /* back up over the last component */ 17561558Srgrimes while (*cp == '/' && cp > dirp) 17571558Srgrimes cp--; 17581558Srgrimes while (*(cp - 1) != '/' && cp > dirp) 17591558Srgrimes cp--; 17601558Srgrimes if (cp == dirp) { 17611558Srgrimes if (debug) 176237663Scharnier warnx("mnt unsucc"); 176337663Scharnier syslog(LOG_ERR, "can't export %s", dirp); 17641558Srgrimes return (1); 17651558Srgrimes } 17661558Srgrimes savedc = *cp; 17671558Srgrimes *cp = '\0'; 17681558Srgrimes } 17691558Srgrimes if (addrp) { 17701558Srgrimes ++addrp; 177142144Sdfr if (*addrp == (u_int32_t *)NULL) 17721558Srgrimes done = TRUE; 17731558Srgrimes } else 17741558Srgrimes done = TRUE; 17751558Srgrimes } 17761558Srgrimes if (cp) 17771558Srgrimes *cp = savedc; 17781558Srgrimes return (0); 17791558Srgrimes} 17801558Srgrimes 17811558Srgrimes/* 17821558Srgrimes * Translate a net address. 17831558Srgrimes */ 17841558Srgrimesint 17851558Srgrimesget_net(cp, net, maskflg) 17861558Srgrimes char *cp; 17871558Srgrimes struct netmsk *net; 17881558Srgrimes int maskflg; 17891558Srgrimes{ 17901558Srgrimes struct netent *np; 17911558Srgrimes long netaddr; 17921558Srgrimes struct in_addr inetaddr, inetaddr2; 17931558Srgrimes char *name; 17941558Srgrimes 179525318Spst if (isdigit(*cp) && ((netaddr = inet_network(cp)) != -1)) { 17961558Srgrimes inetaddr = inet_makeaddr(netaddr, 0); 17971558Srgrimes /* 179837663Scharnier * Due to arbitrary subnet masks, you don't know how many 17991558Srgrimes * bits to shift the address to make it into a network, 18001558Srgrimes * however you do know how to make a network address into 18011558Srgrimes * a host with host == 0 and then compare them. 18021558Srgrimes * (What a pest) 18031558Srgrimes */ 18041558Srgrimes if (!maskflg) { 18051558Srgrimes setnetent(0); 180637663Scharnier while ((np = getnetent())) { 18071558Srgrimes inetaddr2 = inet_makeaddr(np->n_net, 0); 18081558Srgrimes if (inetaddr2.s_addr == inetaddr.s_addr) 18091558Srgrimes break; 18101558Srgrimes } 18111558Srgrimes endnetent(); 18121558Srgrimes } 181325318Spst } else if ((np = getnetbyname(cp)) != NULL) { 181425318Spst inetaddr = inet_makeaddr(np->n_net, 0); 18151558Srgrimes } else 18161558Srgrimes return (1); 181725318Spst 18181558Srgrimes if (maskflg) 18191558Srgrimes net->nt_mask = inetaddr.s_addr; 18201558Srgrimes else { 18211558Srgrimes if (np) 18221558Srgrimes name = np->n_name; 18231558Srgrimes else 18241558Srgrimes name = inet_ntoa(inetaddr); 18251558Srgrimes net->nt_name = (char *)malloc(strlen(name) + 1); 18261558Srgrimes if (net->nt_name == (char *)NULL) 18271558Srgrimes out_of_mem(); 18281558Srgrimes strcpy(net->nt_name, name); 18291558Srgrimes net->nt_net = inetaddr.s_addr; 18301558Srgrimes } 18311558Srgrimes return (0); 18321558Srgrimes} 18331558Srgrimes 18341558Srgrimes/* 18351558Srgrimes * Parse out the next white space separated field 18361558Srgrimes */ 18371558Srgrimesvoid 18381558Srgrimesnextfield(cp, endcp) 18391558Srgrimes char **cp; 18401558Srgrimes char **endcp; 18411558Srgrimes{ 18421558Srgrimes char *p; 18431558Srgrimes 18441558Srgrimes p = *cp; 18451558Srgrimes while (*p == ' ' || *p == '\t') 18461558Srgrimes p++; 18471558Srgrimes if (*p == '\n' || *p == '\0') 18481558Srgrimes *cp = *endcp = p; 18491558Srgrimes else { 18501558Srgrimes *cp = p++; 18511558Srgrimes while (*p != ' ' && *p != '\t' && *p != '\n' && *p != '\0') 18521558Srgrimes p++; 18531558Srgrimes *endcp = p; 18541558Srgrimes } 18551558Srgrimes} 18561558Srgrimes 18571558Srgrimes/* 18581558Srgrimes * Get an exports file line. Skip over blank lines and handle line 18591558Srgrimes * continuations. 18601558Srgrimes */ 18611558Srgrimesint 18621558Srgrimesget_line() 18631558Srgrimes{ 18641558Srgrimes char *p, *cp; 18651558Srgrimes int len; 18661558Srgrimes int totlen, cont_line; 18671558Srgrimes 18681558Srgrimes /* 18691558Srgrimes * Loop around ignoring blank lines and getting all continuation lines. 18701558Srgrimes */ 18711558Srgrimes p = line; 18721558Srgrimes totlen = 0; 18731558Srgrimes do { 18741558Srgrimes if (fgets(p, LINESIZ - totlen, exp_file) == NULL) 18751558Srgrimes return (0); 18761558Srgrimes len = strlen(p); 18771558Srgrimes cp = p + len - 1; 18781558Srgrimes cont_line = 0; 18791558Srgrimes while (cp >= p && 18801558Srgrimes (*cp == ' ' || *cp == '\t' || *cp == '\n' || *cp == '\\')) { 18811558Srgrimes if (*cp == '\\') 18821558Srgrimes cont_line = 1; 18831558Srgrimes cp--; 18841558Srgrimes len--; 18851558Srgrimes } 18861558Srgrimes *++cp = '\0'; 18871558Srgrimes if (len > 0) { 18881558Srgrimes totlen += len; 18891558Srgrimes if (totlen >= LINESIZ) { 189037663Scharnier syslog(LOG_ERR, "exports line too long"); 18911558Srgrimes exit(2); 18921558Srgrimes } 18931558Srgrimes p = cp; 18941558Srgrimes } 18951558Srgrimes } while (totlen == 0 || cont_line); 18961558Srgrimes return (1); 18971558Srgrimes} 18981558Srgrimes 18991558Srgrimes/* 19001558Srgrimes * Parse a description of a credential. 19011558Srgrimes */ 19021558Srgrimesvoid 19031558Srgrimesparsecred(namelist, cr) 19041558Srgrimes char *namelist; 19051558Srgrimes struct ucred *cr; 19061558Srgrimes{ 19071558Srgrimes char *name; 19081558Srgrimes int cnt; 19091558Srgrimes char *names; 19101558Srgrimes struct passwd *pw; 19111558Srgrimes struct group *gr; 19121558Srgrimes int ngroups, groups[NGROUPS + 1]; 19131558Srgrimes 19141558Srgrimes /* 191537663Scharnier * Set up the unprivileged user. 19161558Srgrimes */ 19171558Srgrimes cr->cr_ref = 1; 19181558Srgrimes cr->cr_uid = -2; 19191558Srgrimes cr->cr_groups[0] = -2; 19201558Srgrimes cr->cr_ngroups = 1; 19211558Srgrimes /* 19221558Srgrimes * Get the user's password table entry. 19231558Srgrimes */ 19241558Srgrimes names = strsep(&namelist, " \t\n"); 19251558Srgrimes name = strsep(&names, ":"); 19261558Srgrimes if (isdigit(*name) || *name == '-') 19271558Srgrimes pw = getpwuid(atoi(name)); 19281558Srgrimes else 19291558Srgrimes pw = getpwnam(name); 19301558Srgrimes /* 19311558Srgrimes * Credentials specified as those of a user. 19321558Srgrimes */ 19331558Srgrimes if (names == NULL) { 19341558Srgrimes if (pw == NULL) { 193537663Scharnier syslog(LOG_ERR, "unknown user: %s", name); 19361558Srgrimes return; 19371558Srgrimes } 19381558Srgrimes cr->cr_uid = pw->pw_uid; 19391558Srgrimes ngroups = NGROUPS + 1; 19401558Srgrimes if (getgrouplist(pw->pw_name, pw->pw_gid, groups, &ngroups)) 194137663Scharnier syslog(LOG_ERR, "too many groups"); 19421558Srgrimes /* 19431558Srgrimes * Convert from int's to gid_t's and compress out duplicate 19441558Srgrimes */ 19451558Srgrimes cr->cr_ngroups = ngroups - 1; 19461558Srgrimes cr->cr_groups[0] = groups[0]; 19471558Srgrimes for (cnt = 2; cnt < ngroups; cnt++) 19481558Srgrimes cr->cr_groups[cnt - 1] = groups[cnt]; 19491558Srgrimes return; 19501558Srgrimes } 19511558Srgrimes /* 19521558Srgrimes * Explicit credential specified as a colon separated list: 19531558Srgrimes * uid:gid:gid:... 19541558Srgrimes */ 19551558Srgrimes if (pw != NULL) 19561558Srgrimes cr->cr_uid = pw->pw_uid; 19571558Srgrimes else if (isdigit(*name) || *name == '-') 19581558Srgrimes cr->cr_uid = atoi(name); 19591558Srgrimes else { 196037663Scharnier syslog(LOG_ERR, "unknown user: %s", name); 19611558Srgrimes return; 19621558Srgrimes } 19631558Srgrimes cr->cr_ngroups = 0; 19641558Srgrimes while (names != NULL && *names != '\0' && cr->cr_ngroups < NGROUPS) { 19651558Srgrimes name = strsep(&names, ":"); 19661558Srgrimes if (isdigit(*name) || *name == '-') { 19671558Srgrimes cr->cr_groups[cr->cr_ngroups++] = atoi(name); 19681558Srgrimes } else { 19691558Srgrimes if ((gr = getgrnam(name)) == NULL) { 197037663Scharnier syslog(LOG_ERR, "unknown group: %s", name); 19711558Srgrimes continue; 19721558Srgrimes } 19731558Srgrimes cr->cr_groups[cr->cr_ngroups++] = gr->gr_gid; 19741558Srgrimes } 19751558Srgrimes } 19761558Srgrimes if (names != NULL && *names != '\0' && cr->cr_ngroups == NGROUPS) 197737663Scharnier syslog(LOG_ERR, "too many groups"); 19781558Srgrimes} 19791558Srgrimes 19801558Srgrimes#define STRSIZ (RPCMNT_NAMELEN+RPCMNT_PATHLEN+50) 19811558Srgrimes/* 19821558Srgrimes * Routines that maintain the remote mounttab 19831558Srgrimes */ 19841558Srgrimesvoid 19851558Srgrimesget_mountlist() 19861558Srgrimes{ 19871558Srgrimes struct mountlist *mlp, **mlpp; 198823681Speter char *host, *dirp, *cp; 19891558Srgrimes char str[STRSIZ]; 19901558Srgrimes FILE *mlfile; 19911558Srgrimes 19921558Srgrimes if ((mlfile = fopen(_PATH_RMOUNTLIST, "r")) == NULL) { 199337663Scharnier syslog(LOG_ERR, "can't open %s", _PATH_RMOUNTLIST); 19941558Srgrimes return; 19951558Srgrimes } 19961558Srgrimes mlpp = &mlhead; 19971558Srgrimes while (fgets(str, STRSIZ, mlfile) != NULL) { 199823681Speter cp = str; 199923681Speter host = strsep(&cp, " \t\n"); 200023681Speter dirp = strsep(&cp, " \t\n"); 200123681Speter if (host == NULL || dirp == NULL) 20021558Srgrimes continue; 20031558Srgrimes mlp = (struct mountlist *)malloc(sizeof (*mlp)); 200437663Scharnier if (mlp == (struct mountlist *)NULL) 200537663Scharnier out_of_mem(); 200623681Speter strncpy(mlp->ml_host, host, RPCMNT_NAMELEN); 200723681Speter mlp->ml_host[RPCMNT_NAMELEN] = '\0'; 200823681Speter strncpy(mlp->ml_dirp, dirp, RPCMNT_PATHLEN); 200923681Speter mlp->ml_dirp[RPCMNT_PATHLEN] = '\0'; 20101558Srgrimes mlp->ml_next = (struct mountlist *)NULL; 20111558Srgrimes *mlpp = mlp; 20121558Srgrimes mlpp = &mlp->ml_next; 20131558Srgrimes } 20141558Srgrimes fclose(mlfile); 20151558Srgrimes} 20161558Srgrimes 20171558Srgrimesvoid 20181558Srgrimesdel_mlist(hostp, dirp) 20191558Srgrimes char *hostp, *dirp; 20201558Srgrimes{ 20211558Srgrimes struct mountlist *mlp, **mlpp; 20221558Srgrimes struct mountlist *mlp2; 20231558Srgrimes FILE *mlfile; 20241558Srgrimes int fnd = 0; 20251558Srgrimes 20261558Srgrimes mlpp = &mlhead; 20271558Srgrimes mlp = mlhead; 20281558Srgrimes while (mlp) { 20291558Srgrimes if (!strcmp(mlp->ml_host, hostp) && 20301558Srgrimes (!dirp || !strcmp(mlp->ml_dirp, dirp))) { 20311558Srgrimes fnd = 1; 20321558Srgrimes mlp2 = mlp; 20331558Srgrimes *mlpp = mlp = mlp->ml_next; 20341558Srgrimes free((caddr_t)mlp2); 20351558Srgrimes } else { 20361558Srgrimes mlpp = &mlp->ml_next; 20371558Srgrimes mlp = mlp->ml_next; 20381558Srgrimes } 20391558Srgrimes } 20401558Srgrimes if (fnd) { 20411558Srgrimes if ((mlfile = fopen(_PATH_RMOUNTLIST, "w")) == NULL) { 204237663Scharnier syslog(LOG_ERR,"can't update %s", _PATH_RMOUNTLIST); 20431558Srgrimes return; 20441558Srgrimes } 20451558Srgrimes mlp = mlhead; 20461558Srgrimes while (mlp) { 20471558Srgrimes fprintf(mlfile, "%s %s\n", mlp->ml_host, mlp->ml_dirp); 20481558Srgrimes mlp = mlp->ml_next; 20491558Srgrimes } 20501558Srgrimes fclose(mlfile); 20511558Srgrimes } 20521558Srgrimes} 20531558Srgrimes 20541558Srgrimesvoid 20551558Srgrimesadd_mlist(hostp, dirp) 20561558Srgrimes char *hostp, *dirp; 20571558Srgrimes{ 20581558Srgrimes struct mountlist *mlp, **mlpp; 20591558Srgrimes FILE *mlfile; 20601558Srgrimes 20611558Srgrimes mlpp = &mlhead; 20621558Srgrimes mlp = mlhead; 20631558Srgrimes while (mlp) { 20641558Srgrimes if (!strcmp(mlp->ml_host, hostp) && !strcmp(mlp->ml_dirp, dirp)) 20651558Srgrimes return; 20661558Srgrimes mlpp = &mlp->ml_next; 20671558Srgrimes mlp = mlp->ml_next; 20681558Srgrimes } 20691558Srgrimes mlp = (struct mountlist *)malloc(sizeof (*mlp)); 207037663Scharnier if (mlp == (struct mountlist *)NULL) 207137663Scharnier out_of_mem(); 20721558Srgrimes strncpy(mlp->ml_host, hostp, RPCMNT_NAMELEN); 20731558Srgrimes mlp->ml_host[RPCMNT_NAMELEN] = '\0'; 20741558Srgrimes strncpy(mlp->ml_dirp, dirp, RPCMNT_PATHLEN); 20751558Srgrimes mlp->ml_dirp[RPCMNT_PATHLEN] = '\0'; 20761558Srgrimes mlp->ml_next = (struct mountlist *)NULL; 20771558Srgrimes *mlpp = mlp; 20781558Srgrimes if ((mlfile = fopen(_PATH_RMOUNTLIST, "a")) == NULL) { 207937663Scharnier syslog(LOG_ERR, "can't update %s", _PATH_RMOUNTLIST); 20801558Srgrimes return; 20811558Srgrimes } 20821558Srgrimes fprintf(mlfile, "%s %s\n", mlp->ml_host, mlp->ml_dirp); 20831558Srgrimes fclose(mlfile); 20841558Srgrimes} 20851558Srgrimes 20861558Srgrimes/* 20871558Srgrimes * This function is called via. SIGTERM when the system is going down. 20881558Srgrimes * It sends a broadcast RPCMNT_UMNTALL. 20891558Srgrimes */ 20901558Srgrimesvoid 20911558Srgrimessend_umntall() 20921558Srgrimes{ 20931558Srgrimes (void) clnt_broadcast(RPCPROG_MNT, RPCMNT_VER1, RPCMNT_UMNTALL, 20941558Srgrimes xdr_void, (caddr_t)0, xdr_void, (caddr_t)0, umntall_each); 20951558Srgrimes exit(0); 20961558Srgrimes} 20971558Srgrimes 20981558Srgrimesint 20991558Srgrimesumntall_each(resultsp, raddr) 21001558Srgrimes caddr_t resultsp; 21011558Srgrimes struct sockaddr_in *raddr; 21021558Srgrimes{ 21031558Srgrimes return (1); 21041558Srgrimes} 21051558Srgrimes 21061558Srgrimes/* 21071558Srgrimes * Free up a group list. 21081558Srgrimes */ 21091558Srgrimesvoid 21101558Srgrimesfree_grp(grp) 21111558Srgrimes struct grouplist *grp; 21121558Srgrimes{ 21131558Srgrimes char **addrp; 21141558Srgrimes 21151558Srgrimes if (grp->gr_type == GT_HOST) { 21161558Srgrimes if (grp->gr_ptr.gt_hostent->h_name) { 21171558Srgrimes addrp = grp->gr_ptr.gt_hostent->h_addr_list; 21181558Srgrimes while (addrp && *addrp) 21191558Srgrimes free(*addrp++); 21201558Srgrimes free((caddr_t)grp->gr_ptr.gt_hostent->h_addr_list); 21211558Srgrimes free(grp->gr_ptr.gt_hostent->h_name); 21221558Srgrimes } 21231558Srgrimes free((caddr_t)grp->gr_ptr.gt_hostent); 21241558Srgrimes } else if (grp->gr_type == GT_NET) { 21251558Srgrimes if (grp->gr_ptr.gt_net.nt_name) 21261558Srgrimes free(grp->gr_ptr.gt_net.nt_name); 21271558Srgrimes } 21281558Srgrimes#ifdef ISO 21291558Srgrimes else if (grp->gr_type == GT_ISO) 21301558Srgrimes free((caddr_t)grp->gr_ptr.gt_isoaddr); 21311558Srgrimes#endif 21321558Srgrimes free((caddr_t)grp); 21331558Srgrimes} 21341558Srgrimes 21351558Srgrimes#ifdef DEBUG 21361558Srgrimesvoid 21371558SrgrimesSYSLOG(int pri, const char *fmt, ...) 21381558Srgrimes{ 21391558Srgrimes va_list ap; 21401558Srgrimes 21411558Srgrimes va_start(ap, fmt); 21421558Srgrimes vfprintf(stderr, fmt, ap); 21431558Srgrimes va_end(ap); 21441558Srgrimes} 21451558Srgrimes#endif /* DEBUG */ 21461558Srgrimes 21471558Srgrimes/* 21481558Srgrimes * Check options for consistency. 21491558Srgrimes */ 21501558Srgrimesint 21511558Srgrimescheck_options(dp) 21521558Srgrimes struct dirlist *dp; 21531558Srgrimes{ 21541558Srgrimes 21551558Srgrimes if (dp == (struct dirlist *)NULL) 21561558Srgrimes return (1); 21571558Srgrimes if ((opt_flags & (OP_MAPROOT | OP_MAPALL)) == (OP_MAPROOT | OP_MAPALL) || 21581558Srgrimes (opt_flags & (OP_MAPROOT | OP_KERB)) == (OP_MAPROOT | OP_KERB) || 21591558Srgrimes (opt_flags & (OP_MAPALL | OP_KERB)) == (OP_MAPALL | OP_KERB)) { 21601558Srgrimes syslog(LOG_ERR, "-mapall, -maproot and -kerb mutually exclusive"); 21611558Srgrimes return (1); 21621558Srgrimes } 21631558Srgrimes if ((opt_flags & OP_MASK) && (opt_flags & OP_NET) == 0) { 21641558Srgrimes syslog(LOG_ERR, "-mask requires -net"); 21651558Srgrimes return (1); 21661558Srgrimes } 21671558Srgrimes if ((opt_flags & (OP_NET | OP_ISO)) == (OP_NET | OP_ISO)) { 21681558Srgrimes syslog(LOG_ERR, "-net and -iso mutually exclusive"); 21691558Srgrimes return (1); 21701558Srgrimes } 21711558Srgrimes if ((opt_flags & OP_ALLDIRS) && dp->dp_left) { 217245927Salex syslog(LOG_ERR, "-alldirs has multiple directories"); 21731558Srgrimes return (1); 21741558Srgrimes } 21751558Srgrimes return (0); 21761558Srgrimes} 21771558Srgrimes 21781558Srgrimes/* 21791558Srgrimes * Check an absolute directory path for any symbolic links. Return true 21801558Srgrimes * if no symbolic links are found. 21811558Srgrimes */ 21821558Srgrimesint 21831558Srgrimescheck_dirpath(dirp) 21841558Srgrimes char *dirp; 21851558Srgrimes{ 21861558Srgrimes char *cp; 21871558Srgrimes int ret = 1; 21881558Srgrimes struct stat sb; 21891558Srgrimes 21901558Srgrimes cp = dirp + 1; 21911558Srgrimes while (*cp && ret) { 21921558Srgrimes if (*cp == '/') { 21931558Srgrimes *cp = '\0'; 21949336Sdfr if (lstat(dirp, &sb) < 0 || !S_ISDIR(sb.st_mode)) 21951558Srgrimes ret = 0; 21961558Srgrimes *cp = '/'; 21971558Srgrimes } 21981558Srgrimes cp++; 21991558Srgrimes } 22009336Sdfr if (lstat(dirp, &sb) < 0 || !S_ISDIR(sb.st_mode)) 22011558Srgrimes ret = 0; 22021558Srgrimes return (ret); 22031558Srgrimes} 22049336Sdfr 22059336Sdfr/* 22069336Sdfr * Just translate an ascii string to an integer. 22079336Sdfr */ 22089336Sdfrint 22099336Sdfrget_num(cp) 22109336Sdfr register char *cp; 22119336Sdfr{ 22129336Sdfr register int res = 0; 22139336Sdfr 22149336Sdfr while (*cp) { 22159336Sdfr if (*cp < '0' || *cp > '9') 22169336Sdfr return (-1); 22179336Sdfr res = res * 10 + (*cp++ - '0'); 22189336Sdfr } 22199336Sdfr return (res); 22209336Sdfr} 2221