mountd.c revision 42144
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[] = 4842144Sdfr "$Id: mountd.c,v 1.33 1998/08/02 16:06:34 bde Exp $"; 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 */ 4161558Srgrimes if (realpath(rpcpath, dirpath) == 0 || 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 } 5051558Srgrimes if (!svc_getargs(transp, xdr_dir, dirpath)) { 50631656Sguido syslog(LOG_NOTICE, "undecodable umount request from %s", 50731656Sguido inet_ntoa(saddrin)); 5081558Srgrimes svcerr_decode(transp); 5091558Srgrimes return; 5101558Srgrimes } 5111558Srgrimes if (!svc_sendreply(transp, xdr_void, (caddr_t)NULL)) 51237663Scharnier syslog(LOG_ERR, "can't send reply"); 5131558Srgrimes hp = gethostbyaddr((caddr_t)&saddr, sizeof(saddr), AF_INET); 5141558Srgrimes if (hp) 5151558Srgrimes del_mlist(hp->h_name, dirpath); 51631656Sguido del_mlist(inet_ntoa(saddrin), dirpath); 51731656Sguido if (log) 51831656Sguido syslog(LOG_NOTICE, 51931656Sguido "umount request succeeded from %s for %s", 52031656Sguido inet_ntoa(saddrin), dirpath); 5211558Srgrimes return; 5221558Srgrimes case RPCMNT_UMNTALL: 5239336Sdfr if (sport >= IPPORT_RESERVED && resvport_only) { 52431656Sguido syslog(LOG_NOTICE, 52531656Sguido "umountall request from %s from unprivileged port", 52631656Sguido inet_ntoa(saddrin)); 5271558Srgrimes svcerr_weakauth(transp); 5281558Srgrimes return; 5291558Srgrimes } 5301558Srgrimes if (!svc_sendreply(transp, xdr_void, (caddr_t)NULL)) 53137663Scharnier syslog(LOG_ERR, "can't send reply"); 5321558Srgrimes hp = gethostbyaddr((caddr_t)&saddr, sizeof(saddr), AF_INET); 5331558Srgrimes if (hp) 5341558Srgrimes del_mlist(hp->h_name, (char *)NULL); 53531656Sguido del_mlist(inet_ntoa(saddrin), (char *)NULL); 53631656Sguido if (log) 53731656Sguido syslog(LOG_NOTICE, 53831656Sguido "umountall request succeeded from %s", 53931656Sguido inet_ntoa(saddrin)); 5401558Srgrimes return; 5411558Srgrimes case RPCMNT_EXPORT: 5421558Srgrimes if (!svc_sendreply(transp, xdr_explist, (caddr_t)NULL)) 54337663Scharnier syslog(LOG_ERR, "can't send reply"); 54431656Sguido if (log) 54531656Sguido syslog(LOG_NOTICE, 54631656Sguido "export request succeeded from %s", 54731656Sguido inet_ntoa(saddrin)); 5481558Srgrimes return; 5491558Srgrimes default: 5501558Srgrimes svcerr_noproc(transp); 5511558Srgrimes return; 5521558Srgrimes } 5531558Srgrimes} 5541558Srgrimes 5551558Srgrimes/* 5561558Srgrimes * Xdr conversion for a dirpath string 5571558Srgrimes */ 5581558Srgrimesint 5591558Srgrimesxdr_dir(xdrsp, dirp) 5601558Srgrimes XDR *xdrsp; 5611558Srgrimes char *dirp; 5621558Srgrimes{ 5631558Srgrimes return (xdr_string(xdrsp, &dirp, RPCMNT_PATHLEN)); 5641558Srgrimes} 5651558Srgrimes 5661558Srgrimes/* 5679336Sdfr * Xdr routine to generate file handle reply 5681558Srgrimes */ 5691558Srgrimesint 5709336Sdfrxdr_fhs(xdrsp, cp) 5711558Srgrimes XDR *xdrsp; 5729336Sdfr caddr_t cp; 5731558Srgrimes{ 5749336Sdfr register struct fhreturn *fhrp = (struct fhreturn *)cp; 5759336Sdfr u_long ok = 0, len, auth; 5761558Srgrimes 5771558Srgrimes if (!xdr_long(xdrsp, &ok)) 5781558Srgrimes return (0); 5799336Sdfr switch (fhrp->fhr_vers) { 5809336Sdfr case 1: 5819336Sdfr return (xdr_opaque(xdrsp, (caddr_t)&fhrp->fhr_fh, NFSX_V2FH)); 5829336Sdfr case 3: 5839336Sdfr len = NFSX_V3FH; 5849336Sdfr if (!xdr_long(xdrsp, &len)) 5859336Sdfr return (0); 5869336Sdfr if (!xdr_opaque(xdrsp, (caddr_t)&fhrp->fhr_fh, len)) 5879336Sdfr return (0); 5889336Sdfr if (fhrp->fhr_flag & DP_KERB) 5899336Sdfr auth = RPCAUTH_KERB4; 5909336Sdfr else 5919336Sdfr auth = RPCAUTH_UNIX; 5929336Sdfr len = 1; 5939336Sdfr if (!xdr_long(xdrsp, &len)) 5949336Sdfr return (0); 5959336Sdfr return (xdr_long(xdrsp, &auth)); 5969336Sdfr }; 5979336Sdfr return (0); 5981558Srgrimes} 5991558Srgrimes 6001558Srgrimesint 6011558Srgrimesxdr_mlist(xdrsp, cp) 6021558Srgrimes XDR *xdrsp; 6031558Srgrimes caddr_t cp; 6041558Srgrimes{ 6051558Srgrimes struct mountlist *mlp; 6061558Srgrimes int true = 1; 6071558Srgrimes int false = 0; 6081558Srgrimes char *strp; 6091558Srgrimes 6101558Srgrimes mlp = mlhead; 6111558Srgrimes while (mlp) { 6121558Srgrimes if (!xdr_bool(xdrsp, &true)) 6131558Srgrimes return (0); 6141558Srgrimes strp = &mlp->ml_host[0]; 6151558Srgrimes if (!xdr_string(xdrsp, &strp, RPCMNT_NAMELEN)) 6161558Srgrimes return (0); 6171558Srgrimes strp = &mlp->ml_dirp[0]; 6181558Srgrimes if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN)) 6191558Srgrimes return (0); 6201558Srgrimes mlp = mlp->ml_next; 6211558Srgrimes } 6221558Srgrimes if (!xdr_bool(xdrsp, &false)) 6231558Srgrimes return (0); 6241558Srgrimes return (1); 6251558Srgrimes} 6261558Srgrimes 6271558Srgrimes/* 6281558Srgrimes * Xdr conversion for export list 6291558Srgrimes */ 6301558Srgrimesint 6311558Srgrimesxdr_explist(xdrsp, cp) 6321558Srgrimes XDR *xdrsp; 6331558Srgrimes caddr_t cp; 6341558Srgrimes{ 6351558Srgrimes struct exportlist *ep; 6361558Srgrimes int false = 0; 6379336Sdfr int putdef; 6389336Sdfr sigset_t sighup_mask; 6391558Srgrimes 6409336Sdfr sigemptyset(&sighup_mask); 6419336Sdfr sigaddset(&sighup_mask, SIGHUP); 6429336Sdfr sigprocmask(SIG_BLOCK, &sighup_mask, NULL); 6431558Srgrimes ep = exphead; 6441558Srgrimes while (ep) { 6451558Srgrimes putdef = 0; 6461558Srgrimes if (put_exlist(ep->ex_dirl, xdrsp, ep->ex_defdir, &putdef)) 6471558Srgrimes goto errout; 6481558Srgrimes if (ep->ex_defdir && putdef == 0 && 6491558Srgrimes put_exlist(ep->ex_defdir, xdrsp, (struct dirlist *)NULL, 6501558Srgrimes &putdef)) 6511558Srgrimes goto errout; 6521558Srgrimes ep = ep->ex_next; 6531558Srgrimes } 6549336Sdfr sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 6551558Srgrimes if (!xdr_bool(xdrsp, &false)) 6561558Srgrimes return (0); 6571558Srgrimes return (1); 6581558Srgrimeserrout: 6599336Sdfr sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 6601558Srgrimes return (0); 6611558Srgrimes} 6621558Srgrimes 6631558Srgrimes/* 6641558Srgrimes * Called from xdr_explist() to traverse the tree and export the 6651558Srgrimes * directory paths. 6661558Srgrimes */ 6671558Srgrimesint 6681558Srgrimesput_exlist(dp, xdrsp, adp, putdefp) 6691558Srgrimes struct dirlist *dp; 6701558Srgrimes XDR *xdrsp; 6711558Srgrimes struct dirlist *adp; 6721558Srgrimes int *putdefp; 6731558Srgrimes{ 6741558Srgrimes struct grouplist *grp; 6751558Srgrimes struct hostlist *hp; 6761558Srgrimes int true = 1; 6771558Srgrimes int false = 0; 6781558Srgrimes int gotalldir = 0; 6791558Srgrimes char *strp; 6801558Srgrimes 6811558Srgrimes if (dp) { 6821558Srgrimes if (put_exlist(dp->dp_left, xdrsp, adp, putdefp)) 6831558Srgrimes return (1); 6841558Srgrimes if (!xdr_bool(xdrsp, &true)) 6851558Srgrimes return (1); 6861558Srgrimes strp = dp->dp_dirp; 6871558Srgrimes if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN)) 6881558Srgrimes return (1); 6891558Srgrimes if (adp && !strcmp(dp->dp_dirp, adp->dp_dirp)) { 6901558Srgrimes gotalldir = 1; 6911558Srgrimes *putdefp = 1; 6921558Srgrimes } 6931558Srgrimes if ((dp->dp_flag & DP_DEFSET) == 0 && 6941558Srgrimes (gotalldir == 0 || (adp->dp_flag & DP_DEFSET) == 0)) { 6951558Srgrimes hp = dp->dp_hosts; 6961558Srgrimes while (hp) { 6971558Srgrimes grp = hp->ht_grp; 6981558Srgrimes if (grp->gr_type == GT_HOST) { 6991558Srgrimes if (!xdr_bool(xdrsp, &true)) 7001558Srgrimes return (1); 7011558Srgrimes strp = grp->gr_ptr.gt_hostent->h_name; 7028871Srgrimes if (!xdr_string(xdrsp, &strp, 7031558Srgrimes RPCMNT_NAMELEN)) 7041558Srgrimes return (1); 7051558Srgrimes } else if (grp->gr_type == GT_NET) { 7061558Srgrimes if (!xdr_bool(xdrsp, &true)) 7071558Srgrimes return (1); 7081558Srgrimes strp = grp->gr_ptr.gt_net.nt_name; 7098871Srgrimes if (!xdr_string(xdrsp, &strp, 7101558Srgrimes RPCMNT_NAMELEN)) 7111558Srgrimes return (1); 7121558Srgrimes } 7131558Srgrimes hp = hp->ht_next; 7141558Srgrimes if (gotalldir && hp == (struct hostlist *)NULL) { 7151558Srgrimes hp = adp->dp_hosts; 7161558Srgrimes gotalldir = 0; 7171558Srgrimes } 7181558Srgrimes } 7191558Srgrimes } 7201558Srgrimes if (!xdr_bool(xdrsp, &false)) 7211558Srgrimes return (1); 7221558Srgrimes if (put_exlist(dp->dp_right, xdrsp, adp, putdefp)) 7231558Srgrimes return (1); 7241558Srgrimes } 7251558Srgrimes return (0); 7261558Srgrimes} 7271558Srgrimes 7281558Srgrimes#define LINESIZ 10240 7291558Srgrimeschar line[LINESIZ]; 7301558SrgrimesFILE *exp_file; 7311558Srgrimes 7321558Srgrimes/* 7331558Srgrimes * Get the export list 7341558Srgrimes */ 7351558Srgrimesvoid 7361558Srgrimesget_exportlist() 7371558Srgrimes{ 7381558Srgrimes struct exportlist *ep, *ep2; 7391558Srgrimes struct grouplist *grp, *tgrp; 7401558Srgrimes struct exportlist **epp; 7411558Srgrimes struct dirlist *dirhead; 7421558Srgrimes struct statfs fsb, *fsp; 7431558Srgrimes struct hostent *hpe; 7441558Srgrimes struct ucred anon; 7451558Srgrimes char *cp, *endcp, *dirp, *hst, *usr, *dom, savedc; 7461558Srgrimes int len, has_host, exflags, got_nondir, dirplen, num, i, netgrp; 7471558Srgrimes 7481558Srgrimes /* 7491558Srgrimes * First, get rid of the old list 7501558Srgrimes */ 7511558Srgrimes ep = exphead; 7521558Srgrimes while (ep) { 7531558Srgrimes ep2 = ep; 7541558Srgrimes ep = ep->ex_next; 7551558Srgrimes free_exp(ep2); 7561558Srgrimes } 7571558Srgrimes exphead = (struct exportlist *)NULL; 7581558Srgrimes 7591558Srgrimes grp = grphead; 7601558Srgrimes while (grp) { 7611558Srgrimes tgrp = grp; 7621558Srgrimes grp = grp->gr_next; 7631558Srgrimes free_grp(tgrp); 7641558Srgrimes } 7651558Srgrimes grphead = (struct grouplist *)NULL; 7661558Srgrimes 7671558Srgrimes /* 7681558Srgrimes * And delete exports that are in the kernel for all local 7691558Srgrimes * file systems. 7701558Srgrimes * XXX: Should know how to handle all local exportable file systems 77123681Speter * instead of just "ufs". 7721558Srgrimes */ 7731558Srgrimes num = getmntinfo(&fsp, MNT_NOWAIT); 7741558Srgrimes for (i = 0; i < num; i++) { 7751558Srgrimes union { 7761558Srgrimes struct ufs_args ua; 7771558Srgrimes struct iso_args ia; 7781558Srgrimes struct mfs_args ma; 7799336Sdfr struct msdosfs_args da; 7801558Srgrimes } targs; 7811558Srgrimes 78223681Speter if (!strcmp(fsp->f_fstypename, "mfs") || 78323681Speter !strcmp(fsp->f_fstypename, "ufs") || 78423681Speter !strcmp(fsp->f_fstypename, "msdos") || 78523681Speter !strcmp(fsp->f_fstypename, "cd9660")) { 7869336Sdfr targs.ua.fspec = NULL; 7879336Sdfr targs.ua.export.ex_flags = MNT_DELEXPORT; 7889336Sdfr if (mount(fsp->f_fstypename, fsp->f_mntonname, 7891558Srgrimes fsp->f_flags | MNT_UPDATE, 7901558Srgrimes (caddr_t)&targs) < 0) 79137663Scharnier syslog(LOG_ERR, "can't delete exports for %s", 7921558Srgrimes fsp->f_mntonname); 7931558Srgrimes } 7941558Srgrimes fsp++; 7951558Srgrimes } 7961558Srgrimes 7971558Srgrimes /* 7981558Srgrimes * Read in the exports file and build the list, calling 7991558Srgrimes * mount() as we go along to push the export rules into the kernel. 8001558Srgrimes */ 8011558Srgrimes if ((exp_file = fopen(exname, "r")) == NULL) { 80237663Scharnier syslog(LOG_ERR, "can't open %s", exname); 8031558Srgrimes exit(2); 8041558Srgrimes } 8051558Srgrimes dirhead = (struct dirlist *)NULL; 8061558Srgrimes while (get_line()) { 8071558Srgrimes if (debug) 80837663Scharnier warnx("got line %s", line); 8091558Srgrimes cp = line; 8101558Srgrimes nextfield(&cp, &endcp); 8111558Srgrimes if (*cp == '#') 8121558Srgrimes goto nextline; 8131558Srgrimes 8141558Srgrimes /* 8151558Srgrimes * Set defaults. 8161558Srgrimes */ 8171558Srgrimes has_host = FALSE; 8181558Srgrimes anon = def_anon; 8191558Srgrimes exflags = MNT_EXPORTED; 8201558Srgrimes got_nondir = 0; 8211558Srgrimes opt_flags = 0; 8221558Srgrimes ep = (struct exportlist *)NULL; 8231558Srgrimes 8241558Srgrimes /* 8251558Srgrimes * Create new exports list entry 8261558Srgrimes */ 8271558Srgrimes len = endcp-cp; 8281558Srgrimes tgrp = grp = get_grp(); 8291558Srgrimes while (len > 0) { 8301558Srgrimes if (len > RPCMNT_NAMELEN) { 8311558Srgrimes getexp_err(ep, tgrp); 8321558Srgrimes goto nextline; 8331558Srgrimes } 8341558Srgrimes if (*cp == '-') { 8351558Srgrimes if (ep == (struct exportlist *)NULL) { 8361558Srgrimes getexp_err(ep, tgrp); 8371558Srgrimes goto nextline; 8381558Srgrimes } 8391558Srgrimes if (debug) 84037663Scharnier warnx("doing opt %s", cp); 8411558Srgrimes got_nondir = 1; 8421558Srgrimes if (do_opt(&cp, &endcp, ep, grp, &has_host, 8431558Srgrimes &exflags, &anon)) { 8441558Srgrimes getexp_err(ep, tgrp); 8451558Srgrimes goto nextline; 8461558Srgrimes } 8471558Srgrimes } else if (*cp == '/') { 8481558Srgrimes savedc = *endcp; 8491558Srgrimes *endcp = '\0'; 8501558Srgrimes if (check_dirpath(cp) && 8511558Srgrimes statfs(cp, &fsb) >= 0) { 8521558Srgrimes if (got_nondir) { 85337663Scharnier syslog(LOG_ERR, "dirs must be first"); 8541558Srgrimes getexp_err(ep, tgrp); 8551558Srgrimes goto nextline; 8561558Srgrimes } 8571558Srgrimes if (ep) { 8581558Srgrimes if (ep->ex_fs.val[0] != fsb.f_fsid.val[0] || 8591558Srgrimes ep->ex_fs.val[1] != fsb.f_fsid.val[1]) { 8601558Srgrimes getexp_err(ep, tgrp); 8611558Srgrimes goto nextline; 8621558Srgrimes } 8631558Srgrimes } else { 8641558Srgrimes /* 8651558Srgrimes * See if this directory is already 8661558Srgrimes * in the list. 8671558Srgrimes */ 8681558Srgrimes ep = ex_search(&fsb.f_fsid); 8691558Srgrimes if (ep == (struct exportlist *)NULL) { 8701558Srgrimes ep = get_exp(); 8711558Srgrimes ep->ex_fs = fsb.f_fsid; 8721558Srgrimes ep->ex_fsdir = (char *) 8731558Srgrimes malloc(strlen(fsb.f_mntonname) + 1); 8741558Srgrimes if (ep->ex_fsdir) 8751558Srgrimes strcpy(ep->ex_fsdir, 8761558Srgrimes fsb.f_mntonname); 8771558Srgrimes else 8781558Srgrimes out_of_mem(); 8791558Srgrimes if (debug) 88037663Scharnier warnx("making new ep fs=0x%x,0x%x", 8811558Srgrimes fsb.f_fsid.val[0], 8821558Srgrimes fsb.f_fsid.val[1]); 8831558Srgrimes } else if (debug) 88437663Scharnier warnx("found ep fs=0x%x,0x%x", 8851558Srgrimes fsb.f_fsid.val[0], 8861558Srgrimes fsb.f_fsid.val[1]); 8871558Srgrimes } 8881558Srgrimes 8891558Srgrimes /* 8901558Srgrimes * Add dirpath to export mount point. 8911558Srgrimes */ 8921558Srgrimes dirp = add_expdir(&dirhead, cp, len); 8931558Srgrimes dirplen = len; 8941558Srgrimes } else { 8951558Srgrimes getexp_err(ep, tgrp); 8961558Srgrimes goto nextline; 8971558Srgrimes } 8981558Srgrimes *endcp = savedc; 8991558Srgrimes } else { 9001558Srgrimes savedc = *endcp; 9011558Srgrimes *endcp = '\0'; 9021558Srgrimes got_nondir = 1; 9031558Srgrimes if (ep == (struct exportlist *)NULL) { 9041558Srgrimes getexp_err(ep, tgrp); 9051558Srgrimes goto nextline; 9061558Srgrimes } 9071558Srgrimes 9081558Srgrimes /* 9091558Srgrimes * Get the host or netgroup. 9101558Srgrimes */ 9111558Srgrimes setnetgrent(cp); 9121558Srgrimes netgrp = getnetgrent(&hst, &usr, &dom); 9131558Srgrimes do { 9141558Srgrimes if (has_host) { 9151558Srgrimes grp->gr_next = get_grp(); 9161558Srgrimes grp = grp->gr_next; 9171558Srgrimes } 9181558Srgrimes if (netgrp) { 91937003Sjoerg if (hst == 0) { 92037663Scharnier syslog(LOG_ERR, 92137663Scharnier "null hostname in netgroup %s, skipping", cp); 92237004Sjoerg grp->gr_type = GT_IGNORE; 92337003Sjoerg } else if (get_host(hst, grp, tgrp)) { 92437663Scharnier syslog(LOG_ERR, 92537663Scharnier "bad host %s in netgroup %s, skipping", hst, cp); 92629317Sjlemon grp->gr_type = GT_IGNORE; 9271558Srgrimes } 9287401Swpaul } else if (get_host(cp, grp, tgrp)) { 92937663Scharnier syslog(LOG_ERR, "bad host %s, skipping", cp); 93029317Sjlemon grp->gr_type = GT_IGNORE; 9311558Srgrimes } 9321558Srgrimes has_host = TRUE; 9331558Srgrimes } while (netgrp && getnetgrent(&hst, &usr, &dom)); 9341558Srgrimes endnetgrent(); 9351558Srgrimes *endcp = savedc; 9361558Srgrimes } 9371558Srgrimes cp = endcp; 9381558Srgrimes nextfield(&cp, &endcp); 9391558Srgrimes len = endcp - cp; 9401558Srgrimes } 9411558Srgrimes if (check_options(dirhead)) { 9421558Srgrimes getexp_err(ep, tgrp); 9431558Srgrimes goto nextline; 9441558Srgrimes } 9451558Srgrimes if (!has_host) { 9461558Srgrimes grp->gr_type = GT_HOST; 9471558Srgrimes if (debug) 94837663Scharnier warnx("adding a default entry"); 9491558Srgrimes /* add a default group and make the grp list NULL */ 9501558Srgrimes hpe = (struct hostent *)malloc(sizeof(struct hostent)); 9511558Srgrimes if (hpe == (struct hostent *)NULL) 9521558Srgrimes out_of_mem(); 95312348Sjoerg hpe->h_name = strdup("Default"); 9541558Srgrimes hpe->h_addrtype = AF_INET; 95542144Sdfr hpe->h_length = sizeof (u_int32_t); 9561558Srgrimes hpe->h_addr_list = (char **)NULL; 9571558Srgrimes grp->gr_ptr.gt_hostent = hpe; 9581558Srgrimes 9591558Srgrimes /* 9601558Srgrimes * Don't allow a network export coincide with a list of 9611558Srgrimes * host(s) on the same line. 9621558Srgrimes */ 9631558Srgrimes } else if ((opt_flags & OP_NET) && tgrp->gr_next) { 9641558Srgrimes getexp_err(ep, tgrp); 9651558Srgrimes goto nextline; 96629317Sjlemon 96729317Sjlemon /* 96829317Sjlemon * If an export list was specified on this line, make sure 96929317Sjlemon * that we have at least one valid entry, otherwise skip it. 97029317Sjlemon */ 97129317Sjlemon } else { 97229317Sjlemon grp = tgrp; 97329317Sjlemon while (grp && grp->gr_type == GT_IGNORE) 97429317Sjlemon grp = grp->gr_next; 97529317Sjlemon if (! grp) { 97629317Sjlemon getexp_err(ep, tgrp); 97729317Sjlemon goto nextline; 97829317Sjlemon } 9791558Srgrimes } 9801558Srgrimes 9811558Srgrimes /* 9821558Srgrimes * Loop through hosts, pushing the exports into the kernel. 9831558Srgrimes * After loop, tgrp points to the start of the list and 9841558Srgrimes * grp points to the last entry in the list. 9851558Srgrimes */ 9861558Srgrimes grp = tgrp; 9871558Srgrimes do { 9881558Srgrimes if (do_mount(ep, grp, exflags, &anon, dirp, 9891558Srgrimes dirplen, &fsb)) { 9901558Srgrimes getexp_err(ep, tgrp); 9911558Srgrimes goto nextline; 9921558Srgrimes } 9931558Srgrimes } while (grp->gr_next && (grp = grp->gr_next)); 9941558Srgrimes 9951558Srgrimes /* 9961558Srgrimes * Success. Update the data structures. 9971558Srgrimes */ 9981558Srgrimes if (has_host) { 9999336Sdfr hang_dirp(dirhead, tgrp, ep, opt_flags); 10001558Srgrimes grp->gr_next = grphead; 10011558Srgrimes grphead = tgrp; 10021558Srgrimes } else { 10031558Srgrimes hang_dirp(dirhead, (struct grouplist *)NULL, ep, 10049336Sdfr opt_flags); 10051558Srgrimes free_grp(grp); 10061558Srgrimes } 10071558Srgrimes dirhead = (struct dirlist *)NULL; 10081558Srgrimes if ((ep->ex_flag & EX_LINKED) == 0) { 10091558Srgrimes ep2 = exphead; 10101558Srgrimes epp = &exphead; 10111558Srgrimes 10121558Srgrimes /* 10131558Srgrimes * Insert in the list in alphabetical order. 10141558Srgrimes */ 10151558Srgrimes while (ep2 && strcmp(ep2->ex_fsdir, ep->ex_fsdir) < 0) { 10161558Srgrimes epp = &ep2->ex_next; 10171558Srgrimes ep2 = ep2->ex_next; 10181558Srgrimes } 10191558Srgrimes if (ep2) 10201558Srgrimes ep->ex_next = ep2; 10211558Srgrimes *epp = ep; 10221558Srgrimes ep->ex_flag |= EX_LINKED; 10231558Srgrimes } 10241558Srgrimesnextline: 10251558Srgrimes if (dirhead) { 10261558Srgrimes free_dir(dirhead); 10271558Srgrimes dirhead = (struct dirlist *)NULL; 10281558Srgrimes } 10291558Srgrimes } 10301558Srgrimes fclose(exp_file); 10311558Srgrimes} 10321558Srgrimes 10331558Srgrimes/* 10341558Srgrimes * Allocate an export list element 10351558Srgrimes */ 10361558Srgrimesstruct exportlist * 10371558Srgrimesget_exp() 10381558Srgrimes{ 10391558Srgrimes struct exportlist *ep; 10401558Srgrimes 10411558Srgrimes ep = (struct exportlist *)malloc(sizeof (struct exportlist)); 10421558Srgrimes if (ep == (struct exportlist *)NULL) 10431558Srgrimes out_of_mem(); 104423681Speter memset(ep, 0, sizeof(struct exportlist)); 10451558Srgrimes return (ep); 10461558Srgrimes} 10471558Srgrimes 10481558Srgrimes/* 10491558Srgrimes * Allocate a group list element 10501558Srgrimes */ 10511558Srgrimesstruct grouplist * 10521558Srgrimesget_grp() 10531558Srgrimes{ 10541558Srgrimes struct grouplist *gp; 10551558Srgrimes 10561558Srgrimes gp = (struct grouplist *)malloc(sizeof (struct grouplist)); 10571558Srgrimes if (gp == (struct grouplist *)NULL) 10581558Srgrimes out_of_mem(); 105923681Speter memset(gp, 0, sizeof(struct grouplist)); 10601558Srgrimes return (gp); 10611558Srgrimes} 10621558Srgrimes 10631558Srgrimes/* 10641558Srgrimes * Clean up upon an error in get_exportlist(). 10651558Srgrimes */ 10661558Srgrimesvoid 10671558Srgrimesgetexp_err(ep, grp) 10681558Srgrimes struct exportlist *ep; 10691558Srgrimes struct grouplist *grp; 10701558Srgrimes{ 10711558Srgrimes struct grouplist *tgrp; 10721558Srgrimes 107337663Scharnier syslog(LOG_ERR, "bad exports list line %s", line); 10741558Srgrimes if (ep && (ep->ex_flag & EX_LINKED) == 0) 10751558Srgrimes free_exp(ep); 10761558Srgrimes while (grp) { 10771558Srgrimes tgrp = grp; 10781558Srgrimes grp = grp->gr_next; 10791558Srgrimes free_grp(tgrp); 10801558Srgrimes } 10811558Srgrimes} 10821558Srgrimes 10831558Srgrimes/* 10841558Srgrimes * Search the export list for a matching fs. 10851558Srgrimes */ 10861558Srgrimesstruct exportlist * 10871558Srgrimesex_search(fsid) 10881558Srgrimes fsid_t *fsid; 10891558Srgrimes{ 10901558Srgrimes struct exportlist *ep; 10911558Srgrimes 10921558Srgrimes ep = exphead; 10931558Srgrimes while (ep) { 10941558Srgrimes if (ep->ex_fs.val[0] == fsid->val[0] && 10951558Srgrimes ep->ex_fs.val[1] == fsid->val[1]) 10961558Srgrimes return (ep); 10971558Srgrimes ep = ep->ex_next; 10981558Srgrimes } 10991558Srgrimes return (ep); 11001558Srgrimes} 11011558Srgrimes 11021558Srgrimes/* 11031558Srgrimes * Add a directory path to the list. 11041558Srgrimes */ 11051558Srgrimeschar * 11061558Srgrimesadd_expdir(dpp, cp, len) 11071558Srgrimes struct dirlist **dpp; 11081558Srgrimes char *cp; 11091558Srgrimes int len; 11101558Srgrimes{ 11111558Srgrimes struct dirlist *dp; 11121558Srgrimes 11131558Srgrimes dp = (struct dirlist *)malloc(sizeof (struct dirlist) + len); 111437663Scharnier if (dp == (struct dirlist *)NULL) 111537663Scharnier out_of_mem(); 11161558Srgrimes dp->dp_left = *dpp; 11171558Srgrimes dp->dp_right = (struct dirlist *)NULL; 11181558Srgrimes dp->dp_flag = 0; 11191558Srgrimes dp->dp_hosts = (struct hostlist *)NULL; 11201558Srgrimes strcpy(dp->dp_dirp, cp); 11211558Srgrimes *dpp = dp; 11221558Srgrimes return (dp->dp_dirp); 11231558Srgrimes} 11241558Srgrimes 11251558Srgrimes/* 11261558Srgrimes * Hang the dir list element off the dirpath binary tree as required 11271558Srgrimes * and update the entry for host. 11281558Srgrimes */ 11291558Srgrimesvoid 11309336Sdfrhang_dirp(dp, grp, ep, flags) 11311558Srgrimes struct dirlist *dp; 11321558Srgrimes struct grouplist *grp; 11331558Srgrimes struct exportlist *ep; 11349336Sdfr int flags; 11351558Srgrimes{ 11361558Srgrimes struct hostlist *hp; 11371558Srgrimes struct dirlist *dp2; 11381558Srgrimes 11399336Sdfr if (flags & OP_ALLDIRS) { 11401558Srgrimes if (ep->ex_defdir) 11411558Srgrimes free((caddr_t)dp); 11421558Srgrimes else 11431558Srgrimes ep->ex_defdir = dp; 11449336Sdfr if (grp == (struct grouplist *)NULL) { 11451558Srgrimes ep->ex_defdir->dp_flag |= DP_DEFSET; 11469336Sdfr if (flags & OP_KERB) 11479336Sdfr ep->ex_defdir->dp_flag |= DP_KERB; 11489336Sdfr } else while (grp) { 11491558Srgrimes hp = get_ht(); 11509336Sdfr if (flags & OP_KERB) 11519336Sdfr hp->ht_flag |= DP_KERB; 11521558Srgrimes hp->ht_grp = grp; 11531558Srgrimes hp->ht_next = ep->ex_defdir->dp_hosts; 11541558Srgrimes ep->ex_defdir->dp_hosts = hp; 11551558Srgrimes grp = grp->gr_next; 11561558Srgrimes } 11571558Srgrimes } else { 11581558Srgrimes 11591558Srgrimes /* 116037663Scharnier * Loop through the directories adding them to the tree. 11611558Srgrimes */ 11621558Srgrimes while (dp) { 11631558Srgrimes dp2 = dp->dp_left; 11649336Sdfr add_dlist(&ep->ex_dirl, dp, grp, flags); 11651558Srgrimes dp = dp2; 11661558Srgrimes } 11671558Srgrimes } 11681558Srgrimes} 11691558Srgrimes 11701558Srgrimes/* 11711558Srgrimes * Traverse the binary tree either updating a node that is already there 11721558Srgrimes * for the new directory or adding the new node. 11731558Srgrimes */ 11741558Srgrimesvoid 11759336Sdfradd_dlist(dpp, newdp, grp, flags) 11761558Srgrimes struct dirlist **dpp; 11771558Srgrimes struct dirlist *newdp; 11781558Srgrimes struct grouplist *grp; 11799336Sdfr int flags; 11801558Srgrimes{ 11811558Srgrimes struct dirlist *dp; 11821558Srgrimes struct hostlist *hp; 11831558Srgrimes int cmp; 11841558Srgrimes 11851558Srgrimes dp = *dpp; 11861558Srgrimes if (dp) { 11871558Srgrimes cmp = strcmp(dp->dp_dirp, newdp->dp_dirp); 11881558Srgrimes if (cmp > 0) { 11899336Sdfr add_dlist(&dp->dp_left, newdp, grp, flags); 11901558Srgrimes return; 11911558Srgrimes } else if (cmp < 0) { 11929336Sdfr add_dlist(&dp->dp_right, newdp, grp, flags); 11931558Srgrimes return; 11941558Srgrimes } else 11951558Srgrimes free((caddr_t)newdp); 11961558Srgrimes } else { 11971558Srgrimes dp = newdp; 11981558Srgrimes dp->dp_left = (struct dirlist *)NULL; 11991558Srgrimes *dpp = dp; 12001558Srgrimes } 12011558Srgrimes if (grp) { 12021558Srgrimes 12031558Srgrimes /* 12041558Srgrimes * Hang all of the host(s) off of the directory point. 12051558Srgrimes */ 12061558Srgrimes do { 12071558Srgrimes hp = get_ht(); 12089336Sdfr if (flags & OP_KERB) 12099336Sdfr hp->ht_flag |= DP_KERB; 12101558Srgrimes hp->ht_grp = grp; 12111558Srgrimes hp->ht_next = dp->dp_hosts; 12121558Srgrimes dp->dp_hosts = hp; 12131558Srgrimes grp = grp->gr_next; 12141558Srgrimes } while (grp); 12159336Sdfr } else { 12161558Srgrimes dp->dp_flag |= DP_DEFSET; 12179336Sdfr if (flags & OP_KERB) 12189336Sdfr dp->dp_flag |= DP_KERB; 12199336Sdfr } 12201558Srgrimes} 12211558Srgrimes 12221558Srgrimes/* 12231558Srgrimes * Search for a dirpath on the export point. 12241558Srgrimes */ 12251558Srgrimesstruct dirlist * 12261558Srgrimesdirp_search(dp, dirpath) 12271558Srgrimes struct dirlist *dp; 12281558Srgrimes char *dirpath; 12291558Srgrimes{ 12301558Srgrimes int cmp; 12311558Srgrimes 12321558Srgrimes if (dp) { 12331558Srgrimes cmp = strcmp(dp->dp_dirp, dirpath); 12341558Srgrimes if (cmp > 0) 12351558Srgrimes return (dirp_search(dp->dp_left, dirpath)); 12361558Srgrimes else if (cmp < 0) 12371558Srgrimes return (dirp_search(dp->dp_right, dirpath)); 12381558Srgrimes else 12391558Srgrimes return (dp); 12401558Srgrimes } 12411558Srgrimes return (dp); 12421558Srgrimes} 12431558Srgrimes 12441558Srgrimes/* 12451558Srgrimes * Scan for a host match in a directory tree. 12461558Srgrimes */ 12471558Srgrimesint 12489336Sdfrchk_host(dp, saddr, defsetp, hostsetp) 12491558Srgrimes struct dirlist *dp; 125042144Sdfr u_int32_t saddr; 12511558Srgrimes int *defsetp; 12529336Sdfr int *hostsetp; 12531558Srgrimes{ 12541558Srgrimes struct hostlist *hp; 12551558Srgrimes struct grouplist *grp; 125642144Sdfr u_int32_t **addrp; 12571558Srgrimes 12581558Srgrimes if (dp) { 12591558Srgrimes if (dp->dp_flag & DP_DEFSET) 12609336Sdfr *defsetp = dp->dp_flag; 12611558Srgrimes hp = dp->dp_hosts; 12621558Srgrimes while (hp) { 12631558Srgrimes grp = hp->ht_grp; 12641558Srgrimes switch (grp->gr_type) { 12651558Srgrimes case GT_HOST: 126642144Sdfr addrp = (u_int32_t **) 12671558Srgrimes grp->gr_ptr.gt_hostent->h_addr_list; 12681558Srgrimes while (*addrp) { 12699336Sdfr if (**addrp == saddr) { 12709336Sdfr *hostsetp = (hp->ht_flag | DP_HOSTSET); 12711558Srgrimes return (1); 12729336Sdfr } 12731558Srgrimes addrp++; 12741558Srgrimes } 12751558Srgrimes break; 12761558Srgrimes case GT_NET: 12771558Srgrimes if ((saddr & grp->gr_ptr.gt_net.nt_mask) == 12789336Sdfr grp->gr_ptr.gt_net.nt_net) { 12799336Sdfr *hostsetp = (hp->ht_flag | DP_HOSTSET); 12801558Srgrimes return (1); 12819336Sdfr } 12821558Srgrimes break; 12831558Srgrimes }; 12841558Srgrimes hp = hp->ht_next; 12851558Srgrimes } 12861558Srgrimes } 12871558Srgrimes return (0); 12881558Srgrimes} 12891558Srgrimes 12901558Srgrimes/* 12911558Srgrimes * Scan tree for a host that matches the address. 12921558Srgrimes */ 12931558Srgrimesint 12941558Srgrimesscan_tree(dp, saddr) 12951558Srgrimes struct dirlist *dp; 129642144Sdfr u_int32_t saddr; 12971558Srgrimes{ 12989336Sdfr int defset, hostset; 12991558Srgrimes 13001558Srgrimes if (dp) { 13011558Srgrimes if (scan_tree(dp->dp_left, saddr)) 13021558Srgrimes return (1); 13039336Sdfr if (chk_host(dp, saddr, &defset, &hostset)) 13041558Srgrimes return (1); 13051558Srgrimes if (scan_tree(dp->dp_right, saddr)) 13061558Srgrimes return (1); 13071558Srgrimes } 13081558Srgrimes return (0); 13091558Srgrimes} 13101558Srgrimes 13111558Srgrimes/* 13121558Srgrimes * Traverse the dirlist tree and free it up. 13131558Srgrimes */ 13141558Srgrimesvoid 13151558Srgrimesfree_dir(dp) 13161558Srgrimes struct dirlist *dp; 13171558Srgrimes{ 13181558Srgrimes 13191558Srgrimes if (dp) { 13201558Srgrimes free_dir(dp->dp_left); 13211558Srgrimes free_dir(dp->dp_right); 13221558Srgrimes free_host(dp->dp_hosts); 13231558Srgrimes free((caddr_t)dp); 13241558Srgrimes } 13251558Srgrimes} 13261558Srgrimes 13271558Srgrimes/* 13281558Srgrimes * Parse the option string and update fields. 13291558Srgrimes * Option arguments may either be -<option>=<value> or 13301558Srgrimes * -<option> <value> 13311558Srgrimes */ 13321558Srgrimesint 13331558Srgrimesdo_opt(cpp, endcpp, ep, grp, has_hostp, exflagsp, cr) 13341558Srgrimes char **cpp, **endcpp; 13351558Srgrimes struct exportlist *ep; 13361558Srgrimes struct grouplist *grp; 13371558Srgrimes int *has_hostp; 13381558Srgrimes int *exflagsp; 13391558Srgrimes struct ucred *cr; 13401558Srgrimes{ 13411558Srgrimes char *cpoptarg, *cpoptend; 13421558Srgrimes char *cp, *endcp, *cpopt, savedc, savedc2; 13431558Srgrimes int allflag, usedarg; 13441558Srgrimes 13451558Srgrimes cpopt = *cpp; 13461558Srgrimes cpopt++; 13471558Srgrimes cp = *endcpp; 13481558Srgrimes savedc = *cp; 13491558Srgrimes *cp = '\0'; 13501558Srgrimes while (cpopt && *cpopt) { 13511558Srgrimes allflag = 1; 13521558Srgrimes usedarg = -2; 135337663Scharnier if ((cpoptend = strchr(cpopt, ','))) { 13541558Srgrimes *cpoptend++ = '\0'; 135537663Scharnier if ((cpoptarg = strchr(cpopt, '='))) 13561558Srgrimes *cpoptarg++ = '\0'; 13571558Srgrimes } else { 135837663Scharnier if ((cpoptarg = strchr(cpopt, '='))) 13591558Srgrimes *cpoptarg++ = '\0'; 13601558Srgrimes else { 13611558Srgrimes *cp = savedc; 13621558Srgrimes nextfield(&cp, &endcp); 13631558Srgrimes **endcpp = '\0'; 13641558Srgrimes if (endcp > cp && *cp != '-') { 13651558Srgrimes cpoptarg = cp; 13661558Srgrimes savedc2 = *endcp; 13671558Srgrimes *endcp = '\0'; 13681558Srgrimes usedarg = 0; 13691558Srgrimes } 13701558Srgrimes } 13711558Srgrimes } 13721558Srgrimes if (!strcmp(cpopt, "ro") || !strcmp(cpopt, "o")) { 13731558Srgrimes *exflagsp |= MNT_EXRDONLY; 13741558Srgrimes } else if (cpoptarg && (!strcmp(cpopt, "maproot") || 13751558Srgrimes !(allflag = strcmp(cpopt, "mapall")) || 13761558Srgrimes !strcmp(cpopt, "root") || !strcmp(cpopt, "r"))) { 13771558Srgrimes usedarg++; 13781558Srgrimes parsecred(cpoptarg, cr); 13791558Srgrimes if (allflag == 0) { 13801558Srgrimes *exflagsp |= MNT_EXPORTANON; 13811558Srgrimes opt_flags |= OP_MAPALL; 13821558Srgrimes } else 13831558Srgrimes opt_flags |= OP_MAPROOT; 13841558Srgrimes } else if (!strcmp(cpopt, "kerb") || !strcmp(cpopt, "k")) { 13851558Srgrimes *exflagsp |= MNT_EXKERB; 13861558Srgrimes opt_flags |= OP_KERB; 13871558Srgrimes } else if (cpoptarg && (!strcmp(cpopt, "mask") || 13881558Srgrimes !strcmp(cpopt, "m"))) { 13891558Srgrimes if (get_net(cpoptarg, &grp->gr_ptr.gt_net, 1)) { 139037663Scharnier syslog(LOG_ERR, "bad mask: %s", cpoptarg); 13911558Srgrimes return (1); 13921558Srgrimes } 13931558Srgrimes usedarg++; 13941558Srgrimes opt_flags |= OP_MASK; 13951558Srgrimes } else if (cpoptarg && (!strcmp(cpopt, "network") || 13961558Srgrimes !strcmp(cpopt, "n"))) { 13971558Srgrimes if (grp->gr_type != GT_NULL) { 139837663Scharnier syslog(LOG_ERR, "network/host conflict"); 13991558Srgrimes return (1); 14001558Srgrimes } else if (get_net(cpoptarg, &grp->gr_ptr.gt_net, 0)) { 140137663Scharnier syslog(LOG_ERR, "bad net: %s", cpoptarg); 14021558Srgrimes return (1); 14031558Srgrimes } 14041558Srgrimes grp->gr_type = GT_NET; 14051558Srgrimes *has_hostp = 1; 14061558Srgrimes usedarg++; 14071558Srgrimes opt_flags |= OP_NET; 14081558Srgrimes } else if (!strcmp(cpopt, "alldirs")) { 14091558Srgrimes opt_flags |= OP_ALLDIRS; 141027447Sdfr } else if (!strcmp(cpopt, "public")) { 141127447Sdfr *exflagsp |= MNT_EXPUBLIC; 141227447Sdfr } else if (!strcmp(cpopt, "webnfs")) { 141327447Sdfr *exflagsp |= (MNT_EXPUBLIC|MNT_EXRDONLY|MNT_EXPORTANON); 141427447Sdfr opt_flags |= OP_MAPALL; 141527447Sdfr } else if (cpoptarg && !strcmp(cpopt, "index")) { 141627447Sdfr ep->ex_indexfile = strdup(cpoptarg); 14171558Srgrimes#ifdef ISO 14181558Srgrimes } else if (cpoptarg && !strcmp(cpopt, "iso")) { 14191558Srgrimes if (get_isoaddr(cpoptarg, grp)) { 142037663Scharnier syslog(LOG_ERR, "bad iso addr: %s", cpoptarg); 14211558Srgrimes return (1); 14221558Srgrimes } 14231558Srgrimes *has_hostp = 1; 14241558Srgrimes usedarg++; 14251558Srgrimes opt_flags |= OP_ISO; 14261558Srgrimes#endif /* ISO */ 14271558Srgrimes } else { 142837663Scharnier syslog(LOG_ERR, "bad opt %s", cpopt); 14291558Srgrimes return (1); 14301558Srgrimes } 14311558Srgrimes if (usedarg >= 0) { 14321558Srgrimes *endcp = savedc2; 14331558Srgrimes **endcpp = savedc; 14341558Srgrimes if (usedarg > 0) { 14351558Srgrimes *cpp = cp; 14361558Srgrimes *endcpp = endcp; 14371558Srgrimes } 14381558Srgrimes return (0); 14391558Srgrimes } 14401558Srgrimes cpopt = cpoptend; 14411558Srgrimes } 14421558Srgrimes **endcpp = savedc; 14431558Srgrimes return (0); 14441558Srgrimes} 14451558Srgrimes 14461558Srgrimes/* 14471558Srgrimes * Translate a character string to the corresponding list of network 14481558Srgrimes * addresses for a hostname. 14491558Srgrimes */ 14501558Srgrimesint 14517401Swpaulget_host(cp, grp, tgrp) 14521558Srgrimes char *cp; 14531558Srgrimes struct grouplist *grp; 14547401Swpaul struct grouplist *tgrp; 14551558Srgrimes{ 14567401Swpaul struct grouplist *checkgrp; 14571558Srgrimes struct hostent *hp, *nhp; 14581558Srgrimes char **addrp, **naddrp; 14591558Srgrimes struct hostent t_host; 14601558Srgrimes int i; 146142144Sdfr u_int32_t saddr; 14621558Srgrimes char *aptr[2]; 14631558Srgrimes 14641558Srgrimes if (grp->gr_type != GT_NULL) 14651558Srgrimes return (1); 14661558Srgrimes if ((hp = gethostbyname(cp)) == NULL) { 14671558Srgrimes if (isdigit(*cp)) { 14681558Srgrimes saddr = inet_addr(cp); 14691558Srgrimes if (saddr == -1) { 147037663Scharnier syslog(LOG_ERR, "inet_addr failed for %s", cp); 14711558Srgrimes return (1); 14721558Srgrimes } 14731558Srgrimes if ((hp = gethostbyaddr((caddr_t)&saddr, sizeof (saddr), 14741558Srgrimes AF_INET)) == NULL) { 14751558Srgrimes hp = &t_host; 14761558Srgrimes hp->h_name = cp; 14771558Srgrimes hp->h_addrtype = AF_INET; 147842144Sdfr hp->h_length = sizeof (u_int32_t); 14791558Srgrimes hp->h_addr_list = aptr; 14801558Srgrimes aptr[0] = (char *)&saddr; 14811558Srgrimes aptr[1] = (char *)NULL; 14821558Srgrimes } 14831558Srgrimes } else { 148437663Scharnier syslog(LOG_ERR, "gethostbyname failed for %s", cp); 14851558Srgrimes return (1); 14861558Srgrimes } 14871558Srgrimes } 14887401Swpaul /* 14897401Swpaul * Sanity check: make sure we don't already have an entry 14907401Swpaul * for this host in the grouplist. 14917401Swpaul */ 14927401Swpaul checkgrp = tgrp; 149337157Swpaul while (checkgrp != NULL) { 149417887Swpaul if (checkgrp->gr_type == GT_HOST && 149517887Swpaul checkgrp->gr_ptr.gt_hostent != NULL && 149637157Swpaul (!strcmp(checkgrp->gr_ptr.gt_hostent->h_name, hp->h_name) 149742144Sdfr || *(u_int32_t *)checkgrp->gr_ptr.gt_hostent->h_addr == 149842144Sdfr *(u_int32_t *)hp->h_addr)) { 14997401Swpaul grp->gr_type = GT_IGNORE; 15007401Swpaul return(0); 15017401Swpaul } 15027401Swpaul checkgrp = checkgrp->gr_next; 15037401Swpaul } 15047401Swpaul 15051558Srgrimes grp->gr_type = GT_HOST; 15061558Srgrimes nhp = grp->gr_ptr.gt_hostent = (struct hostent *) 15071558Srgrimes malloc(sizeof(struct hostent)); 15081558Srgrimes if (nhp == (struct hostent *)NULL) 15091558Srgrimes out_of_mem(); 151023681Speter memmove(nhp, hp, sizeof(struct hostent)); 15111558Srgrimes i = strlen(hp->h_name)+1; 15121558Srgrimes nhp->h_name = (char *)malloc(i); 15131558Srgrimes if (nhp->h_name == (char *)NULL) 15141558Srgrimes out_of_mem(); 151523681Speter memmove(nhp->h_name, hp->h_name, i); 15161558Srgrimes addrp = hp->h_addr_list; 15171558Srgrimes i = 1; 15181558Srgrimes while (*addrp++) 15191558Srgrimes i++; 152037663Scharnier naddrp = nhp->h_addr_list = (char **)malloc(i*sizeof(char *)); 15211558Srgrimes if (naddrp == (char **)NULL) 15221558Srgrimes out_of_mem(); 15231558Srgrimes addrp = hp->h_addr_list; 15241558Srgrimes while (*addrp) { 152537663Scharnier *naddrp = (char *)malloc(hp->h_length); 15261558Srgrimes if (*naddrp == (char *)NULL) 15271558Srgrimes out_of_mem(); 152823681Speter memmove(*naddrp, *addrp, hp->h_length); 15291558Srgrimes addrp++; 15301558Srgrimes naddrp++; 15311558Srgrimes } 15321558Srgrimes *naddrp = (char *)NULL; 15331558Srgrimes if (debug) 153437663Scharnier warnx("got host %s", hp->h_name); 15351558Srgrimes return (0); 15361558Srgrimes} 15371558Srgrimes 15381558Srgrimes/* 15391558Srgrimes * Free up an exports list component 15401558Srgrimes */ 15411558Srgrimesvoid 15421558Srgrimesfree_exp(ep) 15431558Srgrimes struct exportlist *ep; 15441558Srgrimes{ 15451558Srgrimes 15461558Srgrimes if (ep->ex_defdir) { 15471558Srgrimes free_host(ep->ex_defdir->dp_hosts); 15481558Srgrimes free((caddr_t)ep->ex_defdir); 15491558Srgrimes } 15501558Srgrimes if (ep->ex_fsdir) 15511558Srgrimes free(ep->ex_fsdir); 155227447Sdfr if (ep->ex_indexfile) 155327447Sdfr free(ep->ex_indexfile); 15541558Srgrimes free_dir(ep->ex_dirl); 15551558Srgrimes free((caddr_t)ep); 15561558Srgrimes} 15571558Srgrimes 15581558Srgrimes/* 15591558Srgrimes * Free hosts. 15601558Srgrimes */ 15611558Srgrimesvoid 15621558Srgrimesfree_host(hp) 15631558Srgrimes struct hostlist *hp; 15641558Srgrimes{ 15651558Srgrimes struct hostlist *hp2; 15661558Srgrimes 15671558Srgrimes while (hp) { 15681558Srgrimes hp2 = hp; 15691558Srgrimes hp = hp->ht_next; 15701558Srgrimes free((caddr_t)hp2); 15711558Srgrimes } 15721558Srgrimes} 15731558Srgrimes 15741558Srgrimesstruct hostlist * 15751558Srgrimesget_ht() 15761558Srgrimes{ 15771558Srgrimes struct hostlist *hp; 15781558Srgrimes 15791558Srgrimes hp = (struct hostlist *)malloc(sizeof (struct hostlist)); 15801558Srgrimes if (hp == (struct hostlist *)NULL) 15811558Srgrimes out_of_mem(); 15821558Srgrimes hp->ht_next = (struct hostlist *)NULL; 15839336Sdfr hp->ht_flag = 0; 15841558Srgrimes return (hp); 15851558Srgrimes} 15861558Srgrimes 15871558Srgrimes#ifdef ISO 15881558Srgrimes/* 15891558Srgrimes * Translate an iso address. 15901558Srgrimes */ 15911558Srgrimesget_isoaddr(cp, grp) 15921558Srgrimes char *cp; 15931558Srgrimes struct grouplist *grp; 15941558Srgrimes{ 15951558Srgrimes struct iso_addr *isop; 15961558Srgrimes struct sockaddr_iso *isoaddr; 15971558Srgrimes 15981558Srgrimes if (grp->gr_type != GT_NULL) 15991558Srgrimes return (1); 16001558Srgrimes if ((isop = iso_addr(cp)) == NULL) { 160137663Scharnier syslog(LOG_ERR, "iso_addr failed, ignored"); 16021558Srgrimes return (1); 16031558Srgrimes } 160437663Scharnier isoaddr = (struct sockaddr_iso *)malloc(sizeof (struct sockaddr_iso)); 16051558Srgrimes if (isoaddr == (struct sockaddr_iso *)NULL) 16061558Srgrimes out_of_mem(); 160723681Speter memset(isoaddr, 0, sizeof(struct sockaddr_iso)); 160823681Speter memmove(&isoaddr->siso_addr, isop, sizeof(struct iso_addr)); 160923681Speter isoaddr->siso_len = sizeof(struct sockaddr_iso); 16101558Srgrimes isoaddr->siso_family = AF_ISO; 16111558Srgrimes grp->gr_type = GT_ISO; 16121558Srgrimes grp->gr_ptr.gt_isoaddr = isoaddr; 16131558Srgrimes return (0); 16141558Srgrimes} 16151558Srgrimes#endif /* ISO */ 16161558Srgrimes 16171558Srgrimes/* 16181558Srgrimes * Out of memory, fatal 16191558Srgrimes */ 16201558Srgrimesvoid 16211558Srgrimesout_of_mem() 16221558Srgrimes{ 16231558Srgrimes 162437663Scharnier syslog(LOG_ERR, "out of memory"); 16251558Srgrimes exit(2); 16261558Srgrimes} 16271558Srgrimes 16281558Srgrimes/* 16291558Srgrimes * Do the mount syscall with the update flag to push the export info into 16301558Srgrimes * the kernel. 16311558Srgrimes */ 16321558Srgrimesint 16331558Srgrimesdo_mount(ep, grp, exflags, anoncrp, dirp, dirplen, fsb) 16341558Srgrimes struct exportlist *ep; 16351558Srgrimes struct grouplist *grp; 16361558Srgrimes int exflags; 16371558Srgrimes struct ucred *anoncrp; 16381558Srgrimes char *dirp; 16391558Srgrimes int dirplen; 16401558Srgrimes struct statfs *fsb; 16411558Srgrimes{ 16421558Srgrimes char *cp = (char *)NULL; 164342144Sdfr u_int32_t **addrp; 16441558Srgrimes int done; 16451558Srgrimes char savedc = '\0'; 16461558Srgrimes struct sockaddr_in sin, imask; 16471558Srgrimes union { 16481558Srgrimes struct ufs_args ua; 16491558Srgrimes struct iso_args ia; 16501558Srgrimes struct mfs_args ma; 16519336Sdfr#ifdef __NetBSD__ 16529336Sdfr struct msdosfs_args da; 16539336Sdfr#endif 16541558Srgrimes } args; 165542144Sdfr u_int32_t net; 16561558Srgrimes 16571558Srgrimes args.ua.fspec = 0; 16581558Srgrimes args.ua.export.ex_flags = exflags; 16591558Srgrimes args.ua.export.ex_anon = *anoncrp; 166027447Sdfr args.ua.export.ex_indexfile = ep->ex_indexfile; 166123681Speter memset(&sin, 0, sizeof(sin)); 166223681Speter memset(&imask, 0, sizeof(imask)); 16631558Srgrimes sin.sin_family = AF_INET; 16641558Srgrimes sin.sin_len = sizeof(sin); 16651558Srgrimes imask.sin_family = AF_INET; 16661558Srgrimes imask.sin_len = sizeof(sin); 16671558Srgrimes if (grp->gr_type == GT_HOST) 166842144Sdfr addrp = (u_int32_t **)grp->gr_ptr.gt_hostent->h_addr_list; 16691558Srgrimes else 167042144Sdfr addrp = (u_int32_t **)NULL; 16711558Srgrimes done = FALSE; 16721558Srgrimes while (!done) { 16731558Srgrimes switch (grp->gr_type) { 16741558Srgrimes case GT_HOST: 16751558Srgrimes if (addrp) { 16761558Srgrimes sin.sin_addr.s_addr = **addrp; 16771558Srgrimes args.ua.export.ex_addrlen = sizeof(sin); 16781558Srgrimes } else 16791558Srgrimes args.ua.export.ex_addrlen = 0; 16801558Srgrimes args.ua.export.ex_addr = (struct sockaddr *)&sin; 16811558Srgrimes args.ua.export.ex_masklen = 0; 16821558Srgrimes break; 16831558Srgrimes case GT_NET: 16841558Srgrimes if (grp->gr_ptr.gt_net.nt_mask) 16851558Srgrimes imask.sin_addr.s_addr = grp->gr_ptr.gt_net.nt_mask; 16861558Srgrimes else { 16871558Srgrimes net = ntohl(grp->gr_ptr.gt_net.nt_net); 16881558Srgrimes if (IN_CLASSA(net)) 16891558Srgrimes imask.sin_addr.s_addr = inet_addr("255.0.0.0"); 16901558Srgrimes else if (IN_CLASSB(net)) 16911558Srgrimes imask.sin_addr.s_addr = 16921558Srgrimes inet_addr("255.255.0.0"); 16931558Srgrimes else 16941558Srgrimes imask.sin_addr.s_addr = 16951558Srgrimes inet_addr("255.255.255.0"); 16961558Srgrimes grp->gr_ptr.gt_net.nt_mask = imask.sin_addr.s_addr; 16971558Srgrimes } 16981558Srgrimes sin.sin_addr.s_addr = grp->gr_ptr.gt_net.nt_net; 16991558Srgrimes args.ua.export.ex_addr = (struct sockaddr *)&sin; 17001558Srgrimes args.ua.export.ex_addrlen = sizeof (sin); 17011558Srgrimes args.ua.export.ex_mask = (struct sockaddr *)&imask; 17021558Srgrimes args.ua.export.ex_masklen = sizeof (imask); 17031558Srgrimes break; 17041558Srgrimes#ifdef ISO 17051558Srgrimes case GT_ISO: 17061558Srgrimes args.ua.export.ex_addr = 17071558Srgrimes (struct sockaddr *)grp->gr_ptr.gt_isoaddr; 17081558Srgrimes args.ua.export.ex_addrlen = 17091558Srgrimes sizeof(struct sockaddr_iso); 17101558Srgrimes args.ua.export.ex_masklen = 0; 17111558Srgrimes break; 17121558Srgrimes#endif /* ISO */ 17137401Swpaul case GT_IGNORE: 17147401Swpaul return(0); 17157401Swpaul break; 17161558Srgrimes default: 171737663Scharnier syslog(LOG_ERR, "bad grouptype"); 17181558Srgrimes if (cp) 17191558Srgrimes *cp = savedc; 17201558Srgrimes return (1); 17211558Srgrimes }; 17221558Srgrimes 17231558Srgrimes /* 17241558Srgrimes * XXX: 17251558Srgrimes * Maybe I should just use the fsb->f_mntonname path instead 17261558Srgrimes * of looping back up the dirp to the mount point?? 17271558Srgrimes * Also, needs to know how to export all types of local 172823681Speter * exportable file systems and not just "ufs". 17291558Srgrimes */ 17309336Sdfr while (mount(fsb->f_fstypename, dirp, 17311558Srgrimes fsb->f_flags | MNT_UPDATE, (caddr_t)&args) < 0) { 17321558Srgrimes if (cp) 17331558Srgrimes *cp-- = savedc; 17341558Srgrimes else 17351558Srgrimes cp = dirp + dirplen - 1; 17361558Srgrimes if (errno == EPERM) { 17371558Srgrimes syslog(LOG_ERR, 173837663Scharnier "can't change attributes for %s", dirp); 17391558Srgrimes return (1); 17401558Srgrimes } 17411558Srgrimes if (opt_flags & OP_ALLDIRS) { 174237663Scharnier syslog(LOG_ERR, "could not remount %s: %m", 17434895Swollman dirp); 17441558Srgrimes return (1); 17451558Srgrimes } 17461558Srgrimes /* back up over the last component */ 17471558Srgrimes while (*cp == '/' && cp > dirp) 17481558Srgrimes cp--; 17491558Srgrimes while (*(cp - 1) != '/' && cp > dirp) 17501558Srgrimes cp--; 17511558Srgrimes if (cp == dirp) { 17521558Srgrimes if (debug) 175337663Scharnier warnx("mnt unsucc"); 175437663Scharnier syslog(LOG_ERR, "can't export %s", dirp); 17551558Srgrimes return (1); 17561558Srgrimes } 17571558Srgrimes savedc = *cp; 17581558Srgrimes *cp = '\0'; 17591558Srgrimes } 17601558Srgrimes if (addrp) { 17611558Srgrimes ++addrp; 176242144Sdfr if (*addrp == (u_int32_t *)NULL) 17631558Srgrimes done = TRUE; 17641558Srgrimes } else 17651558Srgrimes done = TRUE; 17661558Srgrimes } 17671558Srgrimes if (cp) 17681558Srgrimes *cp = savedc; 17691558Srgrimes return (0); 17701558Srgrimes} 17711558Srgrimes 17721558Srgrimes/* 17731558Srgrimes * Translate a net address. 17741558Srgrimes */ 17751558Srgrimesint 17761558Srgrimesget_net(cp, net, maskflg) 17771558Srgrimes char *cp; 17781558Srgrimes struct netmsk *net; 17791558Srgrimes int maskflg; 17801558Srgrimes{ 17811558Srgrimes struct netent *np; 17821558Srgrimes long netaddr; 17831558Srgrimes struct in_addr inetaddr, inetaddr2; 17841558Srgrimes char *name; 17851558Srgrimes 178625318Spst if (isdigit(*cp) && ((netaddr = inet_network(cp)) != -1)) { 17871558Srgrimes inetaddr = inet_makeaddr(netaddr, 0); 17881558Srgrimes /* 178937663Scharnier * Due to arbitrary subnet masks, you don't know how many 17901558Srgrimes * bits to shift the address to make it into a network, 17911558Srgrimes * however you do know how to make a network address into 17921558Srgrimes * a host with host == 0 and then compare them. 17931558Srgrimes * (What a pest) 17941558Srgrimes */ 17951558Srgrimes if (!maskflg) { 17961558Srgrimes setnetent(0); 179737663Scharnier while ((np = getnetent())) { 17981558Srgrimes inetaddr2 = inet_makeaddr(np->n_net, 0); 17991558Srgrimes if (inetaddr2.s_addr == inetaddr.s_addr) 18001558Srgrimes break; 18011558Srgrimes } 18021558Srgrimes endnetent(); 18031558Srgrimes } 180425318Spst } else if ((np = getnetbyname(cp)) != NULL) { 180525318Spst inetaddr = inet_makeaddr(np->n_net, 0); 18061558Srgrimes } else 18071558Srgrimes return (1); 180825318Spst 18091558Srgrimes if (maskflg) 18101558Srgrimes net->nt_mask = inetaddr.s_addr; 18111558Srgrimes else { 18121558Srgrimes if (np) 18131558Srgrimes name = np->n_name; 18141558Srgrimes else 18151558Srgrimes name = inet_ntoa(inetaddr); 18161558Srgrimes net->nt_name = (char *)malloc(strlen(name) + 1); 18171558Srgrimes if (net->nt_name == (char *)NULL) 18181558Srgrimes out_of_mem(); 18191558Srgrimes strcpy(net->nt_name, name); 18201558Srgrimes net->nt_net = inetaddr.s_addr; 18211558Srgrimes } 18221558Srgrimes return (0); 18231558Srgrimes} 18241558Srgrimes 18251558Srgrimes/* 18261558Srgrimes * Parse out the next white space separated field 18271558Srgrimes */ 18281558Srgrimesvoid 18291558Srgrimesnextfield(cp, endcp) 18301558Srgrimes char **cp; 18311558Srgrimes char **endcp; 18321558Srgrimes{ 18331558Srgrimes char *p; 18341558Srgrimes 18351558Srgrimes p = *cp; 18361558Srgrimes while (*p == ' ' || *p == '\t') 18371558Srgrimes p++; 18381558Srgrimes if (*p == '\n' || *p == '\0') 18391558Srgrimes *cp = *endcp = p; 18401558Srgrimes else { 18411558Srgrimes *cp = p++; 18421558Srgrimes while (*p != ' ' && *p != '\t' && *p != '\n' && *p != '\0') 18431558Srgrimes p++; 18441558Srgrimes *endcp = p; 18451558Srgrimes } 18461558Srgrimes} 18471558Srgrimes 18481558Srgrimes/* 18491558Srgrimes * Get an exports file line. Skip over blank lines and handle line 18501558Srgrimes * continuations. 18511558Srgrimes */ 18521558Srgrimesint 18531558Srgrimesget_line() 18541558Srgrimes{ 18551558Srgrimes char *p, *cp; 18561558Srgrimes int len; 18571558Srgrimes int totlen, cont_line; 18581558Srgrimes 18591558Srgrimes /* 18601558Srgrimes * Loop around ignoring blank lines and getting all continuation lines. 18611558Srgrimes */ 18621558Srgrimes p = line; 18631558Srgrimes totlen = 0; 18641558Srgrimes do { 18651558Srgrimes if (fgets(p, LINESIZ - totlen, exp_file) == NULL) 18661558Srgrimes return (0); 18671558Srgrimes len = strlen(p); 18681558Srgrimes cp = p + len - 1; 18691558Srgrimes cont_line = 0; 18701558Srgrimes while (cp >= p && 18711558Srgrimes (*cp == ' ' || *cp == '\t' || *cp == '\n' || *cp == '\\')) { 18721558Srgrimes if (*cp == '\\') 18731558Srgrimes cont_line = 1; 18741558Srgrimes cp--; 18751558Srgrimes len--; 18761558Srgrimes } 18771558Srgrimes *++cp = '\0'; 18781558Srgrimes if (len > 0) { 18791558Srgrimes totlen += len; 18801558Srgrimes if (totlen >= LINESIZ) { 188137663Scharnier syslog(LOG_ERR, "exports line too long"); 18821558Srgrimes exit(2); 18831558Srgrimes } 18841558Srgrimes p = cp; 18851558Srgrimes } 18861558Srgrimes } while (totlen == 0 || cont_line); 18871558Srgrimes return (1); 18881558Srgrimes} 18891558Srgrimes 18901558Srgrimes/* 18911558Srgrimes * Parse a description of a credential. 18921558Srgrimes */ 18931558Srgrimesvoid 18941558Srgrimesparsecred(namelist, cr) 18951558Srgrimes char *namelist; 18961558Srgrimes struct ucred *cr; 18971558Srgrimes{ 18981558Srgrimes char *name; 18991558Srgrimes int cnt; 19001558Srgrimes char *names; 19011558Srgrimes struct passwd *pw; 19021558Srgrimes struct group *gr; 19031558Srgrimes int ngroups, groups[NGROUPS + 1]; 19041558Srgrimes 19051558Srgrimes /* 190637663Scharnier * Set up the unprivileged user. 19071558Srgrimes */ 19081558Srgrimes cr->cr_ref = 1; 19091558Srgrimes cr->cr_uid = -2; 19101558Srgrimes cr->cr_groups[0] = -2; 19111558Srgrimes cr->cr_ngroups = 1; 19121558Srgrimes /* 19131558Srgrimes * Get the user's password table entry. 19141558Srgrimes */ 19151558Srgrimes names = strsep(&namelist, " \t\n"); 19161558Srgrimes name = strsep(&names, ":"); 19171558Srgrimes if (isdigit(*name) || *name == '-') 19181558Srgrimes pw = getpwuid(atoi(name)); 19191558Srgrimes else 19201558Srgrimes pw = getpwnam(name); 19211558Srgrimes /* 19221558Srgrimes * Credentials specified as those of a user. 19231558Srgrimes */ 19241558Srgrimes if (names == NULL) { 19251558Srgrimes if (pw == NULL) { 192637663Scharnier syslog(LOG_ERR, "unknown user: %s", name); 19271558Srgrimes return; 19281558Srgrimes } 19291558Srgrimes cr->cr_uid = pw->pw_uid; 19301558Srgrimes ngroups = NGROUPS + 1; 19311558Srgrimes if (getgrouplist(pw->pw_name, pw->pw_gid, groups, &ngroups)) 193237663Scharnier syslog(LOG_ERR, "too many groups"); 19331558Srgrimes /* 19341558Srgrimes * Convert from int's to gid_t's and compress out duplicate 19351558Srgrimes */ 19361558Srgrimes cr->cr_ngroups = ngroups - 1; 19371558Srgrimes cr->cr_groups[0] = groups[0]; 19381558Srgrimes for (cnt = 2; cnt < ngroups; cnt++) 19391558Srgrimes cr->cr_groups[cnt - 1] = groups[cnt]; 19401558Srgrimes return; 19411558Srgrimes } 19421558Srgrimes /* 19431558Srgrimes * Explicit credential specified as a colon separated list: 19441558Srgrimes * uid:gid:gid:... 19451558Srgrimes */ 19461558Srgrimes if (pw != NULL) 19471558Srgrimes cr->cr_uid = pw->pw_uid; 19481558Srgrimes else if (isdigit(*name) || *name == '-') 19491558Srgrimes cr->cr_uid = atoi(name); 19501558Srgrimes else { 195137663Scharnier syslog(LOG_ERR, "unknown user: %s", name); 19521558Srgrimes return; 19531558Srgrimes } 19541558Srgrimes cr->cr_ngroups = 0; 19551558Srgrimes while (names != NULL && *names != '\0' && cr->cr_ngroups < NGROUPS) { 19561558Srgrimes name = strsep(&names, ":"); 19571558Srgrimes if (isdigit(*name) || *name == '-') { 19581558Srgrimes cr->cr_groups[cr->cr_ngroups++] = atoi(name); 19591558Srgrimes } else { 19601558Srgrimes if ((gr = getgrnam(name)) == NULL) { 196137663Scharnier syslog(LOG_ERR, "unknown group: %s", name); 19621558Srgrimes continue; 19631558Srgrimes } 19641558Srgrimes cr->cr_groups[cr->cr_ngroups++] = gr->gr_gid; 19651558Srgrimes } 19661558Srgrimes } 19671558Srgrimes if (names != NULL && *names != '\0' && cr->cr_ngroups == NGROUPS) 196837663Scharnier syslog(LOG_ERR, "too many groups"); 19691558Srgrimes} 19701558Srgrimes 19711558Srgrimes#define STRSIZ (RPCMNT_NAMELEN+RPCMNT_PATHLEN+50) 19721558Srgrimes/* 19731558Srgrimes * Routines that maintain the remote mounttab 19741558Srgrimes */ 19751558Srgrimesvoid 19761558Srgrimesget_mountlist() 19771558Srgrimes{ 19781558Srgrimes struct mountlist *mlp, **mlpp; 197923681Speter char *host, *dirp, *cp; 19801558Srgrimes char str[STRSIZ]; 19811558Srgrimes FILE *mlfile; 19821558Srgrimes 19831558Srgrimes if ((mlfile = fopen(_PATH_RMOUNTLIST, "r")) == NULL) { 198437663Scharnier syslog(LOG_ERR, "can't open %s", _PATH_RMOUNTLIST); 19851558Srgrimes return; 19861558Srgrimes } 19871558Srgrimes mlpp = &mlhead; 19881558Srgrimes while (fgets(str, STRSIZ, mlfile) != NULL) { 198923681Speter cp = str; 199023681Speter host = strsep(&cp, " \t\n"); 199123681Speter dirp = strsep(&cp, " \t\n"); 199223681Speter if (host == NULL || dirp == NULL) 19931558Srgrimes continue; 19941558Srgrimes mlp = (struct mountlist *)malloc(sizeof (*mlp)); 199537663Scharnier if (mlp == (struct mountlist *)NULL) 199637663Scharnier out_of_mem(); 199723681Speter strncpy(mlp->ml_host, host, RPCMNT_NAMELEN); 199823681Speter mlp->ml_host[RPCMNT_NAMELEN] = '\0'; 199923681Speter strncpy(mlp->ml_dirp, dirp, RPCMNT_PATHLEN); 200023681Speter mlp->ml_dirp[RPCMNT_PATHLEN] = '\0'; 20011558Srgrimes mlp->ml_next = (struct mountlist *)NULL; 20021558Srgrimes *mlpp = mlp; 20031558Srgrimes mlpp = &mlp->ml_next; 20041558Srgrimes } 20051558Srgrimes fclose(mlfile); 20061558Srgrimes} 20071558Srgrimes 20081558Srgrimesvoid 20091558Srgrimesdel_mlist(hostp, dirp) 20101558Srgrimes char *hostp, *dirp; 20111558Srgrimes{ 20121558Srgrimes struct mountlist *mlp, **mlpp; 20131558Srgrimes struct mountlist *mlp2; 20141558Srgrimes FILE *mlfile; 20151558Srgrimes int fnd = 0; 20161558Srgrimes 20171558Srgrimes mlpp = &mlhead; 20181558Srgrimes mlp = mlhead; 20191558Srgrimes while (mlp) { 20201558Srgrimes if (!strcmp(mlp->ml_host, hostp) && 20211558Srgrimes (!dirp || !strcmp(mlp->ml_dirp, dirp))) { 20221558Srgrimes fnd = 1; 20231558Srgrimes mlp2 = mlp; 20241558Srgrimes *mlpp = mlp = mlp->ml_next; 20251558Srgrimes free((caddr_t)mlp2); 20261558Srgrimes } else { 20271558Srgrimes mlpp = &mlp->ml_next; 20281558Srgrimes mlp = mlp->ml_next; 20291558Srgrimes } 20301558Srgrimes } 20311558Srgrimes if (fnd) { 20321558Srgrimes if ((mlfile = fopen(_PATH_RMOUNTLIST, "w")) == NULL) { 203337663Scharnier syslog(LOG_ERR,"can't update %s", _PATH_RMOUNTLIST); 20341558Srgrimes return; 20351558Srgrimes } 20361558Srgrimes mlp = mlhead; 20371558Srgrimes while (mlp) { 20381558Srgrimes fprintf(mlfile, "%s %s\n", mlp->ml_host, mlp->ml_dirp); 20391558Srgrimes mlp = mlp->ml_next; 20401558Srgrimes } 20411558Srgrimes fclose(mlfile); 20421558Srgrimes } 20431558Srgrimes} 20441558Srgrimes 20451558Srgrimesvoid 20461558Srgrimesadd_mlist(hostp, dirp) 20471558Srgrimes char *hostp, *dirp; 20481558Srgrimes{ 20491558Srgrimes struct mountlist *mlp, **mlpp; 20501558Srgrimes FILE *mlfile; 20511558Srgrimes 20521558Srgrimes mlpp = &mlhead; 20531558Srgrimes mlp = mlhead; 20541558Srgrimes while (mlp) { 20551558Srgrimes if (!strcmp(mlp->ml_host, hostp) && !strcmp(mlp->ml_dirp, dirp)) 20561558Srgrimes return; 20571558Srgrimes mlpp = &mlp->ml_next; 20581558Srgrimes mlp = mlp->ml_next; 20591558Srgrimes } 20601558Srgrimes mlp = (struct mountlist *)malloc(sizeof (*mlp)); 206137663Scharnier if (mlp == (struct mountlist *)NULL) 206237663Scharnier out_of_mem(); 20631558Srgrimes strncpy(mlp->ml_host, hostp, RPCMNT_NAMELEN); 20641558Srgrimes mlp->ml_host[RPCMNT_NAMELEN] = '\0'; 20651558Srgrimes strncpy(mlp->ml_dirp, dirp, RPCMNT_PATHLEN); 20661558Srgrimes mlp->ml_dirp[RPCMNT_PATHLEN] = '\0'; 20671558Srgrimes mlp->ml_next = (struct mountlist *)NULL; 20681558Srgrimes *mlpp = mlp; 20691558Srgrimes if ((mlfile = fopen(_PATH_RMOUNTLIST, "a")) == NULL) { 207037663Scharnier syslog(LOG_ERR, "can't update %s", _PATH_RMOUNTLIST); 20711558Srgrimes return; 20721558Srgrimes } 20731558Srgrimes fprintf(mlfile, "%s %s\n", mlp->ml_host, mlp->ml_dirp); 20741558Srgrimes fclose(mlfile); 20751558Srgrimes} 20761558Srgrimes 20771558Srgrimes/* 20781558Srgrimes * This function is called via. SIGTERM when the system is going down. 20791558Srgrimes * It sends a broadcast RPCMNT_UMNTALL. 20801558Srgrimes */ 20811558Srgrimesvoid 20821558Srgrimessend_umntall() 20831558Srgrimes{ 20841558Srgrimes (void) clnt_broadcast(RPCPROG_MNT, RPCMNT_VER1, RPCMNT_UMNTALL, 20851558Srgrimes xdr_void, (caddr_t)0, xdr_void, (caddr_t)0, umntall_each); 20861558Srgrimes exit(0); 20871558Srgrimes} 20881558Srgrimes 20891558Srgrimesint 20901558Srgrimesumntall_each(resultsp, raddr) 20911558Srgrimes caddr_t resultsp; 20921558Srgrimes struct sockaddr_in *raddr; 20931558Srgrimes{ 20941558Srgrimes return (1); 20951558Srgrimes} 20961558Srgrimes 20971558Srgrimes/* 20981558Srgrimes * Free up a group list. 20991558Srgrimes */ 21001558Srgrimesvoid 21011558Srgrimesfree_grp(grp) 21021558Srgrimes struct grouplist *grp; 21031558Srgrimes{ 21041558Srgrimes char **addrp; 21051558Srgrimes 21061558Srgrimes if (grp->gr_type == GT_HOST) { 21071558Srgrimes if (grp->gr_ptr.gt_hostent->h_name) { 21081558Srgrimes addrp = grp->gr_ptr.gt_hostent->h_addr_list; 21091558Srgrimes while (addrp && *addrp) 21101558Srgrimes free(*addrp++); 21111558Srgrimes free((caddr_t)grp->gr_ptr.gt_hostent->h_addr_list); 21121558Srgrimes free(grp->gr_ptr.gt_hostent->h_name); 21131558Srgrimes } 21141558Srgrimes free((caddr_t)grp->gr_ptr.gt_hostent); 21151558Srgrimes } else if (grp->gr_type == GT_NET) { 21161558Srgrimes if (grp->gr_ptr.gt_net.nt_name) 21171558Srgrimes free(grp->gr_ptr.gt_net.nt_name); 21181558Srgrimes } 21191558Srgrimes#ifdef ISO 21201558Srgrimes else if (grp->gr_type == GT_ISO) 21211558Srgrimes free((caddr_t)grp->gr_ptr.gt_isoaddr); 21221558Srgrimes#endif 21231558Srgrimes free((caddr_t)grp); 21241558Srgrimes} 21251558Srgrimes 21261558Srgrimes#ifdef DEBUG 21271558Srgrimesvoid 21281558SrgrimesSYSLOG(int pri, const char *fmt, ...) 21291558Srgrimes{ 21301558Srgrimes va_list ap; 21311558Srgrimes 21321558Srgrimes va_start(ap, fmt); 21331558Srgrimes vfprintf(stderr, fmt, ap); 21341558Srgrimes va_end(ap); 21351558Srgrimes} 21361558Srgrimes#endif /* DEBUG */ 21371558Srgrimes 21381558Srgrimes/* 21391558Srgrimes * Check options for consistency. 21401558Srgrimes */ 21411558Srgrimesint 21421558Srgrimescheck_options(dp) 21431558Srgrimes struct dirlist *dp; 21441558Srgrimes{ 21451558Srgrimes 21461558Srgrimes if (dp == (struct dirlist *)NULL) 21471558Srgrimes return (1); 21481558Srgrimes if ((opt_flags & (OP_MAPROOT | OP_MAPALL)) == (OP_MAPROOT | OP_MAPALL) || 21491558Srgrimes (opt_flags & (OP_MAPROOT | OP_KERB)) == (OP_MAPROOT | OP_KERB) || 21501558Srgrimes (opt_flags & (OP_MAPALL | OP_KERB)) == (OP_MAPALL | OP_KERB)) { 21511558Srgrimes syslog(LOG_ERR, "-mapall, -maproot and -kerb mutually exclusive"); 21521558Srgrimes return (1); 21531558Srgrimes } 21541558Srgrimes if ((opt_flags & OP_MASK) && (opt_flags & OP_NET) == 0) { 21551558Srgrimes syslog(LOG_ERR, "-mask requires -net"); 21561558Srgrimes return (1); 21571558Srgrimes } 21581558Srgrimes if ((opt_flags & (OP_NET | OP_ISO)) == (OP_NET | OP_ISO)) { 21591558Srgrimes syslog(LOG_ERR, "-net and -iso mutually exclusive"); 21601558Srgrimes return (1); 21611558Srgrimes } 21621558Srgrimes if ((opt_flags & OP_ALLDIRS) && dp->dp_left) { 21631558Srgrimes syslog(LOG_ERR, "-alldir has multiple directories"); 21641558Srgrimes return (1); 21651558Srgrimes } 21661558Srgrimes return (0); 21671558Srgrimes} 21681558Srgrimes 21691558Srgrimes/* 21701558Srgrimes * Check an absolute directory path for any symbolic links. Return true 21711558Srgrimes * if no symbolic links are found. 21721558Srgrimes */ 21731558Srgrimesint 21741558Srgrimescheck_dirpath(dirp) 21751558Srgrimes char *dirp; 21761558Srgrimes{ 21771558Srgrimes char *cp; 21781558Srgrimes int ret = 1; 21791558Srgrimes struct stat sb; 21801558Srgrimes 21811558Srgrimes cp = dirp + 1; 21821558Srgrimes while (*cp && ret) { 21831558Srgrimes if (*cp == '/') { 21841558Srgrimes *cp = '\0'; 21859336Sdfr if (lstat(dirp, &sb) < 0 || !S_ISDIR(sb.st_mode)) 21861558Srgrimes ret = 0; 21871558Srgrimes *cp = '/'; 21881558Srgrimes } 21891558Srgrimes cp++; 21901558Srgrimes } 21919336Sdfr if (lstat(dirp, &sb) < 0 || !S_ISDIR(sb.st_mode)) 21921558Srgrimes ret = 0; 21931558Srgrimes return (ret); 21941558Srgrimes} 21959336Sdfr 21969336Sdfr/* 21979336Sdfr * Just translate an ascii string to an integer. 21989336Sdfr */ 21999336Sdfrint 22009336Sdfrget_num(cp) 22019336Sdfr register char *cp; 22029336Sdfr{ 22039336Sdfr register int res = 0; 22049336Sdfr 22059336Sdfr while (*cp) { 22069336Sdfr if (*cp < '0' || *cp > '9') 22079336Sdfr return (-1); 22089336Sdfr res = res * 10 + (*cp++ - '0'); 22099336Sdfr } 22109336Sdfr return (res); 22119336Sdfr} 2212