mountd.c revision 25087
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 381558Srgrimesstatic 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 4423681Speter/*static char sccsid[] = "@(#)mountd.c 8.15 (Berkeley) 5/1/95"; */ 452999Swollmanstatic const char rcsid[] = 4625087Sdfr "$Id: mountd.c,v 1.18 1997/04/09 20:17:15 guido Exp $"; 472999Swollman#endif /*not lint*/ 481558Srgrimes 491558Srgrimes#include <sys/param.h> 501558Srgrimes#include <sys/file.h> 511558Srgrimes#include <sys/ioctl.h> 521558Srgrimes#include <sys/mount.h> 531558Srgrimes#include <sys/socket.h> 541558Srgrimes#include <sys/stat.h> 551558Srgrimes#include <sys/syslog.h> 561558Srgrimes#include <sys/ucred.h> 5724330Sguido#include <sys/sysctl.h> 581558Srgrimes 591558Srgrimes#include <rpc/rpc.h> 601558Srgrimes#include <rpc/pmap_clnt.h> 611558Srgrimes#include <rpc/pmap_prot.h> 621558Srgrimes#ifdef ISO 631558Srgrimes#include <netiso/iso.h> 641558Srgrimes#endif 651558Srgrimes#include <nfs/rpcv2.h> 669336Sdfr#include <nfs/nfsproto.h> 6724330Sguido#include <nfs/nfs.h> 6823681Speter#include <ufs/ufs/ufsmount.h> 6923681Speter#include <msdosfs/msdosfsmount.h> 7023681Speter#include <isofs/cd9660/cd9660_mount.h> /* XXX need isofs in include */ 711558Srgrimes 721558Srgrimes#include <arpa/inet.h> 731558Srgrimes 741558Srgrimes#include <ctype.h> 751558Srgrimes#include <errno.h> 761558Srgrimes#include <grp.h> 771558Srgrimes#include <netdb.h> 781558Srgrimes#include <pwd.h> 791558Srgrimes#include <signal.h> 801558Srgrimes#include <stdio.h> 811558Srgrimes#include <stdlib.h> 821558Srgrimes#include <string.h> 831558Srgrimes#include <unistd.h> 841558Srgrimes#include "pathnames.h" 851558Srgrimes 861558Srgrimes#ifdef DEBUG 871558Srgrimes#include <stdarg.h> 881558Srgrimes#endif 891558Srgrimes 901558Srgrimes/* 911558Srgrimes * Structures for keeping the mount list and export list 921558Srgrimes */ 931558Srgrimesstruct mountlist { 941558Srgrimes struct mountlist *ml_next; 951558Srgrimes char ml_host[RPCMNT_NAMELEN+1]; 961558Srgrimes char ml_dirp[RPCMNT_PATHLEN+1]; 971558Srgrimes}; 981558Srgrimes 991558Srgrimesstruct dirlist { 1001558Srgrimes struct dirlist *dp_left; 1011558Srgrimes struct dirlist *dp_right; 1021558Srgrimes int dp_flag; 1031558Srgrimes struct hostlist *dp_hosts; /* List of hosts this dir exported to */ 1041558Srgrimes char dp_dirp[1]; /* Actually malloc'd to size of dir */ 1051558Srgrimes}; 1061558Srgrimes/* dp_flag bits */ 1071558Srgrimes#define DP_DEFSET 0x1 1089336Sdfr#define DP_HOSTSET 0x2 1099336Sdfr#define DP_KERB 0x4 1101558Srgrimes 1111558Srgrimesstruct exportlist { 1121558Srgrimes struct exportlist *ex_next; 1131558Srgrimes struct dirlist *ex_dirl; 1141558Srgrimes struct dirlist *ex_defdir; 1151558Srgrimes int ex_flag; 1161558Srgrimes fsid_t ex_fs; 1171558Srgrimes char *ex_fsdir; 1181558Srgrimes}; 1191558Srgrimes/* ex_flag bits */ 1201558Srgrimes#define EX_LINKED 0x1 1211558Srgrimes 1221558Srgrimesstruct netmsk { 1231558Srgrimes u_long nt_net; 1241558Srgrimes u_long nt_mask; 1251558Srgrimes char *nt_name; 1261558Srgrimes}; 1271558Srgrimes 1281558Srgrimesunion grouptypes { 1291558Srgrimes struct hostent *gt_hostent; 1301558Srgrimes struct netmsk gt_net; 1311558Srgrimes#ifdef ISO 1321558Srgrimes struct sockaddr_iso *gt_isoaddr; 1331558Srgrimes#endif 1341558Srgrimes}; 1351558Srgrimes 1361558Srgrimesstruct grouplist { 1371558Srgrimes int gr_type; 1381558Srgrimes union grouptypes gr_ptr; 1391558Srgrimes struct grouplist *gr_next; 1401558Srgrimes}; 1411558Srgrimes/* Group types */ 1421558Srgrimes#define GT_NULL 0x0 1431558Srgrimes#define GT_HOST 0x1 1441558Srgrimes#define GT_NET 0x2 1451558Srgrimes#define GT_ISO 0x4 1467401Swpaul#define GT_IGNORE 0x5 1471558Srgrimes 1481558Srgrimesstruct hostlist { 1499336Sdfr int ht_flag; /* Uses DP_xx bits */ 1501558Srgrimes struct grouplist *ht_grp; 1511558Srgrimes struct hostlist *ht_next; 1521558Srgrimes}; 1531558Srgrimes 1549336Sdfrstruct fhreturn { 1559336Sdfr int fhr_flag; 1569336Sdfr int fhr_vers; 1579336Sdfr nfsfh_t fhr_fh; 1589336Sdfr}; 1599336Sdfr 1601558Srgrimes/* Global defs */ 1611558Srgrimeschar *add_expdir __P((struct dirlist **, char *, int)); 1621558Srgrimesvoid add_dlist __P((struct dirlist **, struct dirlist *, 1639336Sdfr struct grouplist *, int)); 1641558Srgrimesvoid add_mlist __P((char *, char *)); 1651558Srgrimesint check_dirpath __P((char *)); 1661558Srgrimesint check_options __P((struct dirlist *)); 1679336Sdfrint chk_host __P((struct dirlist *, u_long, int *, int *)); 1681558Srgrimesvoid del_mlist __P((char *, char *)); 1691558Srgrimesstruct dirlist *dirp_search __P((struct dirlist *, char *)); 1701558Srgrimesint do_mount __P((struct exportlist *, struct grouplist *, int, 1719336Sdfr struct ucred *, char *, int, struct statfs *)); 1721558Srgrimesint do_opt __P((char **, char **, struct exportlist *, struct grouplist *, 1731558Srgrimes int *, int *, struct ucred *)); 1741558Srgrimesstruct exportlist *ex_search __P((fsid_t *)); 1751558Srgrimesstruct exportlist *get_exp __P((void)); 1761558Srgrimesvoid free_dir __P((struct dirlist *)); 1771558Srgrimesvoid free_exp __P((struct exportlist *)); 1781558Srgrimesvoid free_grp __P((struct grouplist *)); 1791558Srgrimesvoid free_host __P((struct hostlist *)); 1801558Srgrimesvoid get_exportlist __P((void)); 1817401Swpaulint get_host __P((char *, struct grouplist *, struct grouplist *)); 1829336Sdfrint get_num __P((char *)); 1831558Srgrimesstruct hostlist *get_ht __P((void)); 1841558Srgrimesint get_line __P((void)); 1851558Srgrimesvoid get_mountlist __P((void)); 1861558Srgrimesint get_net __P((char *, struct netmsk *, int)); 1871558Srgrimesvoid getexp_err __P((struct exportlist *, struct grouplist *)); 1881558Srgrimesstruct grouplist *get_grp __P((void)); 1891558Srgrimesvoid hang_dirp __P((struct dirlist *, struct grouplist *, 1901558Srgrimes struct exportlist *, int)); 1911558Srgrimesvoid mntsrv __P((struct svc_req *, SVCXPRT *)); 1921558Srgrimesvoid nextfield __P((char **, char **)); 1931558Srgrimesvoid out_of_mem __P((void)); 1941558Srgrimesvoid parsecred __P((char *, struct ucred *)); 1951558Srgrimesint put_exlist __P((struct dirlist *, XDR *, struct dirlist *, int *)); 1961558Srgrimesint scan_tree __P((struct dirlist *, u_long)); 1971558Srgrimesvoid send_umntall __P((void)); 1981558Srgrimesint umntall_each __P((caddr_t, struct sockaddr_in *)); 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; 2261558Srgrimesint opt_flags; 2271558Srgrimes/* Bits for above */ 2281558Srgrimes#define OP_MAPROOT 0x01 2291558Srgrimes#define OP_MAPALL 0x02 2301558Srgrimes#define OP_KERB 0x04 2311558Srgrimes#define OP_MASK 0x08 2321558Srgrimes#define OP_NET 0x10 2331558Srgrimes#define OP_ISO 0x20 2341558Srgrimes#define OP_ALLDIRS 0x40 2351558Srgrimes 2361558Srgrimes#ifdef DEBUG 2371558Srgrimesint debug = 1; 2381558Srgrimesvoid SYSLOG __P((int, const char *, ...)); 2391558Srgrimes#define syslog SYSLOG 2401558Srgrimes#else 2411558Srgrimesint debug = 0; 2421558Srgrimes#endif 2431558Srgrimes 2441558Srgrimes/* 2451558Srgrimes * Mountd server for NFS mount protocol as described in: 2461558Srgrimes * NFS: Network File System Protocol Specification, RFC1094, Appendix A 2471558Srgrimes * The optional arguments are the exports file name 2481558Srgrimes * default: _PATH_EXPORTS 2491558Srgrimes * and "-n" to allow nonroot mount. 2501558Srgrimes */ 2511558Srgrimesint 2521558Srgrimesmain(argc, argv) 2531558Srgrimes int argc; 2541558Srgrimes char **argv; 2551558Srgrimes{ 2569202Srgrimes SVCXPRT *udptransp, *tcptransp; 2571558Srgrimes int c; 25824489Sbde int mib[3]; 2599336Sdfr#ifdef __FreeBSD__ 26023681Speter struct vfsconf vfc; 26123681Speter int error; 2621558Srgrimes 26323681Speter error = getvfsbyname("nfs", &vfc); 26423681Speter if (error && vfsisloadable("nfs")) { 2652999Swollman if(vfsload("nfs")) 2662999Swollman err(1, "vfsload(nfs)"); 2672999Swollman endvfsent(); /* flush cache */ 26823681Speter error = getvfsbyname("nfs", &vfc); 2692999Swollman } 27023681Speter if (error) 2712999Swollman errx(1, "NFS support is not available in the running kernel"); 2729336Sdfr#endif /* __FreeBSD__ */ 2732999Swollman 27425087Sdfr while ((c = getopt(argc, argv, "2dnr")) != -1) 2751558Srgrimes switch (c) { 27625087Sdfr case '2': 27725087Sdfr force_v2 = 1; 27825087Sdfr break; 2799336Sdfr case 'n': 2809336Sdfr resvport_only = 0; 2819336Sdfr break; 2829336Sdfr case 'r': 2839336Sdfr dir_only = 0; 2849336Sdfr break; 2858688Sphk case 'd': 2868688Sphk debug = debug ? 0 : 1; 2878688Sphk break; 2881558Srgrimes default: 28923681Speter fprintf(stderr, "Usage: mountd [-d] [-r] [-n] [export_file]\n"); 2901558Srgrimes exit(1); 2911558Srgrimes }; 2921558Srgrimes argc -= optind; 2931558Srgrimes argv += optind; 2941558Srgrimes grphead = (struct grouplist *)NULL; 2951558Srgrimes exphead = (struct exportlist *)NULL; 2961558Srgrimes mlhead = (struct mountlist *)NULL; 2971558Srgrimes if (argc == 1) { 2981558Srgrimes strncpy(exname, *argv, MAXPATHLEN-1); 2991558Srgrimes exname[MAXPATHLEN-1] = '\0'; 3001558Srgrimes } else 3011558Srgrimes strcpy(exname, _PATH_EXPORTS); 3021558Srgrimes openlog("mountd", LOG_PID, LOG_DAEMON); 3031558Srgrimes if (debug) 3041558Srgrimes fprintf(stderr,"Getting export list.\n"); 3051558Srgrimes get_exportlist(); 3061558Srgrimes if (debug) 3071558Srgrimes fprintf(stderr,"Getting mount list.\n"); 3081558Srgrimes get_mountlist(); 3091558Srgrimes if (debug) 3101558Srgrimes fprintf(stderr,"Here we go.\n"); 3111558Srgrimes if (debug == 0) { 3121558Srgrimes daemon(0, 0); 3131558Srgrimes signal(SIGINT, SIG_IGN); 3141558Srgrimes signal(SIGQUIT, SIG_IGN); 3151558Srgrimes } 3161558Srgrimes signal(SIGHUP, (void (*) __P((int))) get_exportlist); 3171558Srgrimes signal(SIGTERM, (void (*) __P((int))) send_umntall); 3181558Srgrimes { FILE *pidfile = fopen(_PATH_MOUNTDPID, "w"); 3191558Srgrimes if (pidfile != NULL) { 3201558Srgrimes fprintf(pidfile, "%d\n", getpid()); 3211558Srgrimes fclose(pidfile); 3221558Srgrimes } 3231558Srgrimes } 32424330Sguido 32524759Sguido if (!resvport_only) { 32624759Sguido mib[0] = CTL_VFS; 32724759Sguido mib[1] = MOUNT_NFS; 32824759Sguido mib[2] = NFS_NFSPRIVPORT; 32924759Sguido if (sysctl(mib, 3, NULL, NULL, &resvport_only, 33024759Sguido sizeof(resvport_only)) != 0 && errno != ENOENT) { 33124759Sguido syslog(LOG_ERR, "sysctl: %m"); 33224759Sguido exit(1); 33324759Sguido } 33424330Sguido } 33524330Sguido 3369202Srgrimes if ((udptransp = svcudp_create(RPC_ANYSOCK)) == NULL || 3379202Srgrimes (tcptransp = svctcp_create(RPC_ANYSOCK, 0, 0)) == NULL) { 3381558Srgrimes syslog(LOG_ERR, "Can't create socket"); 3391558Srgrimes exit(1); 3401558Srgrimes } 3419336Sdfr pmap_unset(RPCPROG_MNT, 1); 3429336Sdfr pmap_unset(RPCPROG_MNT, 3); 34325087Sdfr if (!force_v2) 34425087Sdfr if (!svc_register(udptransp, RPCPROG_MNT, 3, mntsrv, IPPROTO_UDP) || 34525087Sdfr !svc_register(tcptransp, RPCPROG_MNT, 3, mntsrv, IPPROTO_TCP)) { 34625087Sdfr syslog(LOG_ERR, "Can't register mount"); 34725087Sdfr exit(1); 34825087Sdfr } 3499336Sdfr if (!svc_register(udptransp, RPCPROG_MNT, 1, mntsrv, IPPROTO_UDP) || 35025087Sdfr !svc_register(tcptransp, RPCPROG_MNT, 1, mntsrv, IPPROTO_TCP)) { 3511558Srgrimes syslog(LOG_ERR, "Can't register mount"); 3521558Srgrimes exit(1); 3531558Srgrimes } 3541558Srgrimes svc_run(); 3551558Srgrimes syslog(LOG_ERR, "Mountd died"); 3561558Srgrimes exit(1); 3571558Srgrimes} 3581558Srgrimes 3591558Srgrimes/* 3601558Srgrimes * The mount rpc service 3611558Srgrimes */ 3621558Srgrimesvoid 3631558Srgrimesmntsrv(rqstp, transp) 3641558Srgrimes struct svc_req *rqstp; 3651558Srgrimes SVCXPRT *transp; 3661558Srgrimes{ 3671558Srgrimes struct exportlist *ep; 3681558Srgrimes struct dirlist *dp; 3699336Sdfr struct fhreturn fhr; 3701558Srgrimes struct stat stb; 3711558Srgrimes struct statfs fsb; 3721558Srgrimes struct hostent *hp; 3731558Srgrimes u_long saddr; 3749336Sdfr u_short sport; 37523681Speter char rpcpath[RPCMNT_PATHLEN + 1], dirpath[MAXPATHLEN]; 3769336Sdfr int bad = ENOENT, defset, hostset; 3779336Sdfr sigset_t sighup_mask; 3781558Srgrimes 3799336Sdfr sigemptyset(&sighup_mask); 3809336Sdfr sigaddset(&sighup_mask, SIGHUP); 3811558Srgrimes saddr = transp->xp_raddr.sin_addr.s_addr; 3829336Sdfr sport = ntohs(transp->xp_raddr.sin_port); 3831558Srgrimes hp = (struct hostent *)NULL; 3841558Srgrimes switch (rqstp->rq_proc) { 3851558Srgrimes case NULLPROC: 3861558Srgrimes if (!svc_sendreply(transp, xdr_void, (caddr_t)NULL)) 3871558Srgrimes syslog(LOG_ERR, "Can't send reply"); 3881558Srgrimes return; 3891558Srgrimes case RPCMNT_MOUNT: 3909336Sdfr if (sport >= IPPORT_RESERVED && resvport_only) { 3911558Srgrimes svcerr_weakauth(transp); 3921558Srgrimes return; 3931558Srgrimes } 3941558Srgrimes if (!svc_getargs(transp, xdr_dir, rpcpath)) { 3951558Srgrimes svcerr_decode(transp); 3961558Srgrimes return; 3971558Srgrimes } 3981558Srgrimes 3991558Srgrimes /* 4001558Srgrimes * Get the real pathname and make sure it is a directory 4019336Sdfr * or a regular file if the -r option was specified 4029336Sdfr * and it exists. 4031558Srgrimes */ 4041558Srgrimes if (realpath(rpcpath, dirpath) == 0 || 4051558Srgrimes stat(dirpath, &stb) < 0 || 4069336Sdfr (!S_ISDIR(stb.st_mode) && 4079336Sdfr (dir_only || !S_ISREG(stb.st_mode))) || 4081558Srgrimes statfs(dirpath, &fsb) < 0) { 4091558Srgrimes chdir("/"); /* Just in case realpath doesn't */ 4101558Srgrimes if (debug) 4111558Srgrimes fprintf(stderr, "stat failed on %s\n", dirpath); 4121558Srgrimes if (!svc_sendreply(transp, xdr_long, (caddr_t)&bad)) 4131558Srgrimes syslog(LOG_ERR, "Can't send reply"); 4141558Srgrimes return; 4151558Srgrimes } 4161558Srgrimes 4171558Srgrimes /* Check in the exports list */ 4189336Sdfr sigprocmask(SIG_BLOCK, &sighup_mask, NULL); 4191558Srgrimes ep = ex_search(&fsb.f_fsid); 4209336Sdfr hostset = defset = 0; 4219336Sdfr if (ep && (chk_host(ep->ex_defdir, saddr, &defset, &hostset) || 4221558Srgrimes ((dp = dirp_search(ep->ex_dirl, dirpath)) && 4239336Sdfr chk_host(dp, saddr, &defset, &hostset)) || 4241558Srgrimes (defset && scan_tree(ep->ex_defdir, saddr) == 0 && 4251558Srgrimes scan_tree(ep->ex_dirl, saddr) == 0))) { 4269336Sdfr if (hostset & DP_HOSTSET) 4279336Sdfr fhr.fhr_flag = hostset; 4289336Sdfr else 4299336Sdfr fhr.fhr_flag = defset; 4309336Sdfr fhr.fhr_vers = rqstp->rq_vers; 4311558Srgrimes /* Get the file handle */ 43223681Speter memset(&fhr.fhr_fh, 0, sizeof(nfsfh_t)); 4339336Sdfr if (getfh(dirpath, (fhandle_t *)&fhr.fhr_fh) < 0) { 4341558Srgrimes bad = errno; 4351558Srgrimes syslog(LOG_ERR, "Can't get fh for %s", dirpath); 4361558Srgrimes if (!svc_sendreply(transp, xdr_long, 4371558Srgrimes (caddr_t)&bad)) 4381558Srgrimes syslog(LOG_ERR, "Can't send reply"); 4399336Sdfr sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 4401558Srgrimes return; 4411558Srgrimes } 4429336Sdfr if (!svc_sendreply(transp, xdr_fhs, (caddr_t)&fhr)) 4431558Srgrimes syslog(LOG_ERR, "Can't send reply"); 4441558Srgrimes if (hp == NULL) 4451558Srgrimes hp = gethostbyaddr((caddr_t)&saddr, 4461558Srgrimes sizeof(saddr), AF_INET); 4471558Srgrimes if (hp) 4481558Srgrimes add_mlist(hp->h_name, dirpath); 4491558Srgrimes else 4501558Srgrimes add_mlist(inet_ntoa(transp->xp_raddr.sin_addr), 4511558Srgrimes dirpath); 4521558Srgrimes if (debug) 4531558Srgrimes fprintf(stderr,"Mount successfull.\n"); 4541558Srgrimes } else { 4551558Srgrimes bad = EACCES; 4561558Srgrimes if (!svc_sendreply(transp, xdr_long, (caddr_t)&bad)) 4571558Srgrimes syslog(LOG_ERR, "Can't send reply"); 4581558Srgrimes } 4599336Sdfr sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 4601558Srgrimes return; 4611558Srgrimes case RPCMNT_DUMP: 4621558Srgrimes if (!svc_sendreply(transp, xdr_mlist, (caddr_t)NULL)) 4631558Srgrimes syslog(LOG_ERR, "Can't send reply"); 4641558Srgrimes return; 4651558Srgrimes case RPCMNT_UMOUNT: 4669336Sdfr if (sport >= IPPORT_RESERVED && resvport_only) { 4671558Srgrimes svcerr_weakauth(transp); 4681558Srgrimes return; 4691558Srgrimes } 4701558Srgrimes if (!svc_getargs(transp, xdr_dir, dirpath)) { 4711558Srgrimes svcerr_decode(transp); 4721558Srgrimes return; 4731558Srgrimes } 4741558Srgrimes if (!svc_sendreply(transp, xdr_void, (caddr_t)NULL)) 4751558Srgrimes syslog(LOG_ERR, "Can't send reply"); 4761558Srgrimes hp = gethostbyaddr((caddr_t)&saddr, sizeof(saddr), AF_INET); 4771558Srgrimes if (hp) 4781558Srgrimes del_mlist(hp->h_name, dirpath); 4791558Srgrimes del_mlist(inet_ntoa(transp->xp_raddr.sin_addr), dirpath); 4801558Srgrimes return; 4811558Srgrimes case RPCMNT_UMNTALL: 4829336Sdfr if (sport >= IPPORT_RESERVED && resvport_only) { 4831558Srgrimes svcerr_weakauth(transp); 4841558Srgrimes return; 4851558Srgrimes } 4861558Srgrimes if (!svc_sendreply(transp, xdr_void, (caddr_t)NULL)) 4871558Srgrimes syslog(LOG_ERR, "Can't send reply"); 4881558Srgrimes hp = gethostbyaddr((caddr_t)&saddr, sizeof(saddr), AF_INET); 4891558Srgrimes if (hp) 4901558Srgrimes del_mlist(hp->h_name, (char *)NULL); 4911558Srgrimes del_mlist(inet_ntoa(transp->xp_raddr.sin_addr), (char *)NULL); 4921558Srgrimes return; 4931558Srgrimes case RPCMNT_EXPORT: 4941558Srgrimes if (!svc_sendreply(transp, xdr_explist, (caddr_t)NULL)) 4951558Srgrimes syslog(LOG_ERR, "Can't send reply"); 4961558Srgrimes return; 4971558Srgrimes default: 4981558Srgrimes svcerr_noproc(transp); 4991558Srgrimes return; 5001558Srgrimes } 5011558Srgrimes} 5021558Srgrimes 5031558Srgrimes/* 5041558Srgrimes * Xdr conversion for a dirpath string 5051558Srgrimes */ 5061558Srgrimesint 5071558Srgrimesxdr_dir(xdrsp, dirp) 5081558Srgrimes XDR *xdrsp; 5091558Srgrimes char *dirp; 5101558Srgrimes{ 5111558Srgrimes return (xdr_string(xdrsp, &dirp, RPCMNT_PATHLEN)); 5121558Srgrimes} 5131558Srgrimes 5141558Srgrimes/* 5159336Sdfr * Xdr routine to generate file handle reply 5161558Srgrimes */ 5171558Srgrimesint 5189336Sdfrxdr_fhs(xdrsp, cp) 5191558Srgrimes XDR *xdrsp; 5209336Sdfr caddr_t cp; 5211558Srgrimes{ 5229336Sdfr register struct fhreturn *fhrp = (struct fhreturn *)cp; 5239336Sdfr u_long ok = 0, len, auth; 5241558Srgrimes 5251558Srgrimes if (!xdr_long(xdrsp, &ok)) 5261558Srgrimes return (0); 5279336Sdfr switch (fhrp->fhr_vers) { 5289336Sdfr case 1: 5299336Sdfr return (xdr_opaque(xdrsp, (caddr_t)&fhrp->fhr_fh, NFSX_V2FH)); 5309336Sdfr case 3: 5319336Sdfr len = NFSX_V3FH; 5329336Sdfr if (!xdr_long(xdrsp, &len)) 5339336Sdfr return (0); 5349336Sdfr if (!xdr_opaque(xdrsp, (caddr_t)&fhrp->fhr_fh, len)) 5359336Sdfr return (0); 5369336Sdfr if (fhrp->fhr_flag & DP_KERB) 5379336Sdfr auth = RPCAUTH_KERB4; 5389336Sdfr else 5399336Sdfr auth = RPCAUTH_UNIX; 5409336Sdfr len = 1; 5419336Sdfr if (!xdr_long(xdrsp, &len)) 5429336Sdfr return (0); 5439336Sdfr return (xdr_long(xdrsp, &auth)); 5449336Sdfr }; 5459336Sdfr return (0); 5461558Srgrimes} 5471558Srgrimes 5481558Srgrimesint 5491558Srgrimesxdr_mlist(xdrsp, cp) 5501558Srgrimes XDR *xdrsp; 5511558Srgrimes caddr_t cp; 5521558Srgrimes{ 5531558Srgrimes struct mountlist *mlp; 5541558Srgrimes int true = 1; 5551558Srgrimes int false = 0; 5561558Srgrimes char *strp; 5571558Srgrimes 5581558Srgrimes mlp = mlhead; 5591558Srgrimes while (mlp) { 5601558Srgrimes if (!xdr_bool(xdrsp, &true)) 5611558Srgrimes return (0); 5621558Srgrimes strp = &mlp->ml_host[0]; 5631558Srgrimes if (!xdr_string(xdrsp, &strp, RPCMNT_NAMELEN)) 5641558Srgrimes return (0); 5651558Srgrimes strp = &mlp->ml_dirp[0]; 5661558Srgrimes if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN)) 5671558Srgrimes return (0); 5681558Srgrimes mlp = mlp->ml_next; 5691558Srgrimes } 5701558Srgrimes if (!xdr_bool(xdrsp, &false)) 5711558Srgrimes return (0); 5721558Srgrimes return (1); 5731558Srgrimes} 5741558Srgrimes 5751558Srgrimes/* 5761558Srgrimes * Xdr conversion for export list 5771558Srgrimes */ 5781558Srgrimesint 5791558Srgrimesxdr_explist(xdrsp, cp) 5801558Srgrimes XDR *xdrsp; 5811558Srgrimes caddr_t cp; 5821558Srgrimes{ 5831558Srgrimes struct exportlist *ep; 5841558Srgrimes int false = 0; 5859336Sdfr int putdef; 5869336Sdfr sigset_t sighup_mask; 5871558Srgrimes 5889336Sdfr sigemptyset(&sighup_mask); 5899336Sdfr sigaddset(&sighup_mask, SIGHUP); 5909336Sdfr sigprocmask(SIG_BLOCK, &sighup_mask, NULL); 5911558Srgrimes ep = exphead; 5921558Srgrimes while (ep) { 5931558Srgrimes putdef = 0; 5941558Srgrimes if (put_exlist(ep->ex_dirl, xdrsp, ep->ex_defdir, &putdef)) 5951558Srgrimes goto errout; 5961558Srgrimes if (ep->ex_defdir && putdef == 0 && 5971558Srgrimes put_exlist(ep->ex_defdir, xdrsp, (struct dirlist *)NULL, 5981558Srgrimes &putdef)) 5991558Srgrimes goto errout; 6001558Srgrimes ep = ep->ex_next; 6011558Srgrimes } 6029336Sdfr sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 6031558Srgrimes if (!xdr_bool(xdrsp, &false)) 6041558Srgrimes return (0); 6051558Srgrimes return (1); 6061558Srgrimeserrout: 6079336Sdfr sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 6081558Srgrimes return (0); 6091558Srgrimes} 6101558Srgrimes 6111558Srgrimes/* 6121558Srgrimes * Called from xdr_explist() to traverse the tree and export the 6131558Srgrimes * directory paths. 6141558Srgrimes */ 6151558Srgrimesint 6161558Srgrimesput_exlist(dp, xdrsp, adp, putdefp) 6171558Srgrimes struct dirlist *dp; 6181558Srgrimes XDR *xdrsp; 6191558Srgrimes struct dirlist *adp; 6201558Srgrimes int *putdefp; 6211558Srgrimes{ 6221558Srgrimes struct grouplist *grp; 6231558Srgrimes struct hostlist *hp; 6241558Srgrimes int true = 1; 6251558Srgrimes int false = 0; 6261558Srgrimes int gotalldir = 0; 6271558Srgrimes char *strp; 6281558Srgrimes 6291558Srgrimes if (dp) { 6301558Srgrimes if (put_exlist(dp->dp_left, xdrsp, adp, putdefp)) 6311558Srgrimes return (1); 6321558Srgrimes if (!xdr_bool(xdrsp, &true)) 6331558Srgrimes return (1); 6341558Srgrimes strp = dp->dp_dirp; 6351558Srgrimes if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN)) 6361558Srgrimes return (1); 6371558Srgrimes if (adp && !strcmp(dp->dp_dirp, adp->dp_dirp)) { 6381558Srgrimes gotalldir = 1; 6391558Srgrimes *putdefp = 1; 6401558Srgrimes } 6411558Srgrimes if ((dp->dp_flag & DP_DEFSET) == 0 && 6421558Srgrimes (gotalldir == 0 || (adp->dp_flag & DP_DEFSET) == 0)) { 6431558Srgrimes hp = dp->dp_hosts; 6441558Srgrimes while (hp) { 6451558Srgrimes grp = hp->ht_grp; 6461558Srgrimes if (grp->gr_type == GT_HOST) { 6471558Srgrimes if (!xdr_bool(xdrsp, &true)) 6481558Srgrimes return (1); 6491558Srgrimes strp = grp->gr_ptr.gt_hostent->h_name; 6508871Srgrimes if (!xdr_string(xdrsp, &strp, 6511558Srgrimes RPCMNT_NAMELEN)) 6521558Srgrimes return (1); 6531558Srgrimes } else if (grp->gr_type == GT_NET) { 6541558Srgrimes if (!xdr_bool(xdrsp, &true)) 6551558Srgrimes return (1); 6561558Srgrimes strp = grp->gr_ptr.gt_net.nt_name; 6578871Srgrimes if (!xdr_string(xdrsp, &strp, 6581558Srgrimes RPCMNT_NAMELEN)) 6591558Srgrimes return (1); 6601558Srgrimes } 6611558Srgrimes hp = hp->ht_next; 6621558Srgrimes if (gotalldir && hp == (struct hostlist *)NULL) { 6631558Srgrimes hp = adp->dp_hosts; 6641558Srgrimes gotalldir = 0; 6651558Srgrimes } 6661558Srgrimes } 6671558Srgrimes } 6681558Srgrimes if (!xdr_bool(xdrsp, &false)) 6691558Srgrimes return (1); 6701558Srgrimes if (put_exlist(dp->dp_right, xdrsp, adp, putdefp)) 6711558Srgrimes return (1); 6721558Srgrimes } 6731558Srgrimes return (0); 6741558Srgrimes} 6751558Srgrimes 6761558Srgrimes#define LINESIZ 10240 6771558Srgrimeschar line[LINESIZ]; 6781558SrgrimesFILE *exp_file; 6791558Srgrimes 6801558Srgrimes/* 6811558Srgrimes * Get the export list 6821558Srgrimes */ 6831558Srgrimesvoid 6841558Srgrimesget_exportlist() 6851558Srgrimes{ 6861558Srgrimes struct exportlist *ep, *ep2; 6871558Srgrimes struct grouplist *grp, *tgrp; 6881558Srgrimes struct exportlist **epp; 6891558Srgrimes struct dirlist *dirhead; 6901558Srgrimes struct statfs fsb, *fsp; 6911558Srgrimes struct hostent *hpe; 6921558Srgrimes struct ucred anon; 6931558Srgrimes char *cp, *endcp, *dirp, *hst, *usr, *dom, savedc; 6941558Srgrimes int len, has_host, exflags, got_nondir, dirplen, num, i, netgrp; 6951558Srgrimes 6961558Srgrimes /* 6971558Srgrimes * First, get rid of the old list 6981558Srgrimes */ 6991558Srgrimes ep = exphead; 7001558Srgrimes while (ep) { 7011558Srgrimes ep2 = ep; 7021558Srgrimes ep = ep->ex_next; 7031558Srgrimes free_exp(ep2); 7041558Srgrimes } 7051558Srgrimes exphead = (struct exportlist *)NULL; 7061558Srgrimes 7071558Srgrimes grp = grphead; 7081558Srgrimes while (grp) { 7091558Srgrimes tgrp = grp; 7101558Srgrimes grp = grp->gr_next; 7111558Srgrimes free_grp(tgrp); 7121558Srgrimes } 7131558Srgrimes grphead = (struct grouplist *)NULL; 7141558Srgrimes 7151558Srgrimes /* 7161558Srgrimes * And delete exports that are in the kernel for all local 7171558Srgrimes * file systems. 7181558Srgrimes * XXX: Should know how to handle all local exportable file systems 71923681Speter * instead of just "ufs". 7201558Srgrimes */ 7211558Srgrimes num = getmntinfo(&fsp, MNT_NOWAIT); 7221558Srgrimes for (i = 0; i < num; i++) { 7231558Srgrimes union { 7241558Srgrimes struct ufs_args ua; 7251558Srgrimes struct iso_args ia; 7261558Srgrimes struct mfs_args ma; 7279336Sdfr struct msdosfs_args da; 7281558Srgrimes } targs; 7291558Srgrimes 73023681Speter if (!strcmp(fsp->f_fstypename, "mfs") || 73123681Speter !strcmp(fsp->f_fstypename, "ufs") || 73223681Speter !strcmp(fsp->f_fstypename, "msdos") || 73323681Speter !strcmp(fsp->f_fstypename, "cd9660")) { 7349336Sdfr targs.ua.fspec = NULL; 7359336Sdfr targs.ua.export.ex_flags = MNT_DELEXPORT; 7369336Sdfr if (mount(fsp->f_fstypename, fsp->f_mntonname, 7371558Srgrimes fsp->f_flags | MNT_UPDATE, 7381558Srgrimes (caddr_t)&targs) < 0) 7391558Srgrimes syslog(LOG_ERR, "Can't delete exports for %s", 7401558Srgrimes fsp->f_mntonname); 7411558Srgrimes } 7421558Srgrimes fsp++; 7431558Srgrimes } 7441558Srgrimes 7451558Srgrimes /* 7461558Srgrimes * Read in the exports file and build the list, calling 7471558Srgrimes * mount() as we go along to push the export rules into the kernel. 7481558Srgrimes */ 7491558Srgrimes if ((exp_file = fopen(exname, "r")) == NULL) { 7501558Srgrimes syslog(LOG_ERR, "Can't open %s", exname); 7511558Srgrimes exit(2); 7521558Srgrimes } 7531558Srgrimes dirhead = (struct dirlist *)NULL; 7541558Srgrimes while (get_line()) { 7551558Srgrimes if (debug) 7561558Srgrimes fprintf(stderr,"Got line %s\n",line); 7571558Srgrimes cp = line; 7581558Srgrimes nextfield(&cp, &endcp); 7591558Srgrimes if (*cp == '#') 7601558Srgrimes goto nextline; 7611558Srgrimes 7621558Srgrimes /* 7631558Srgrimes * Set defaults. 7641558Srgrimes */ 7651558Srgrimes has_host = FALSE; 7661558Srgrimes anon = def_anon; 7671558Srgrimes exflags = MNT_EXPORTED; 7681558Srgrimes got_nondir = 0; 7691558Srgrimes opt_flags = 0; 7701558Srgrimes ep = (struct exportlist *)NULL; 7711558Srgrimes 7721558Srgrimes /* 7731558Srgrimes * Create new exports list entry 7741558Srgrimes */ 7751558Srgrimes len = endcp-cp; 7761558Srgrimes tgrp = grp = get_grp(); 7771558Srgrimes while (len > 0) { 7781558Srgrimes if (len > RPCMNT_NAMELEN) { 7791558Srgrimes getexp_err(ep, tgrp); 7801558Srgrimes goto nextline; 7811558Srgrimes } 7821558Srgrimes if (*cp == '-') { 7831558Srgrimes if (ep == (struct exportlist *)NULL) { 7841558Srgrimes getexp_err(ep, tgrp); 7851558Srgrimes goto nextline; 7861558Srgrimes } 7871558Srgrimes if (debug) 7881558Srgrimes fprintf(stderr, "doing opt %s\n", cp); 7891558Srgrimes got_nondir = 1; 7901558Srgrimes if (do_opt(&cp, &endcp, ep, grp, &has_host, 7911558Srgrimes &exflags, &anon)) { 7921558Srgrimes getexp_err(ep, tgrp); 7931558Srgrimes goto nextline; 7941558Srgrimes } 7951558Srgrimes } else if (*cp == '/') { 7961558Srgrimes savedc = *endcp; 7971558Srgrimes *endcp = '\0'; 7981558Srgrimes if (check_dirpath(cp) && 7991558Srgrimes statfs(cp, &fsb) >= 0) { 8001558Srgrimes if (got_nondir) { 8011558Srgrimes syslog(LOG_ERR, "Dirs must be first"); 8021558Srgrimes getexp_err(ep, tgrp); 8031558Srgrimes goto nextline; 8041558Srgrimes } 8051558Srgrimes if (ep) { 8061558Srgrimes if (ep->ex_fs.val[0] != fsb.f_fsid.val[0] || 8071558Srgrimes ep->ex_fs.val[1] != fsb.f_fsid.val[1]) { 8081558Srgrimes getexp_err(ep, tgrp); 8091558Srgrimes goto nextline; 8101558Srgrimes } 8111558Srgrimes } else { 8121558Srgrimes /* 8131558Srgrimes * See if this directory is already 8141558Srgrimes * in the list. 8151558Srgrimes */ 8161558Srgrimes ep = ex_search(&fsb.f_fsid); 8171558Srgrimes if (ep == (struct exportlist *)NULL) { 8181558Srgrimes ep = get_exp(); 8191558Srgrimes ep->ex_fs = fsb.f_fsid; 8201558Srgrimes ep->ex_fsdir = (char *) 8211558Srgrimes malloc(strlen(fsb.f_mntonname) + 1); 8221558Srgrimes if (ep->ex_fsdir) 8231558Srgrimes strcpy(ep->ex_fsdir, 8241558Srgrimes fsb.f_mntonname); 8251558Srgrimes else 8261558Srgrimes out_of_mem(); 8271558Srgrimes if (debug) 8281558Srgrimes fprintf(stderr, 8291558Srgrimes "Making new ep fs=0x%x,0x%x\n", 8301558Srgrimes fsb.f_fsid.val[0], 8311558Srgrimes fsb.f_fsid.val[1]); 8321558Srgrimes } else if (debug) 8331558Srgrimes fprintf(stderr, 8341558Srgrimes "Found ep fs=0x%x,0x%x\n", 8351558Srgrimes fsb.f_fsid.val[0], 8361558Srgrimes fsb.f_fsid.val[1]); 8371558Srgrimes } 8381558Srgrimes 8391558Srgrimes /* 8401558Srgrimes * Add dirpath to export mount point. 8411558Srgrimes */ 8421558Srgrimes dirp = add_expdir(&dirhead, cp, len); 8431558Srgrimes dirplen = len; 8441558Srgrimes } else { 8451558Srgrimes getexp_err(ep, tgrp); 8461558Srgrimes goto nextline; 8471558Srgrimes } 8481558Srgrimes *endcp = savedc; 8491558Srgrimes } else { 8501558Srgrimes savedc = *endcp; 8511558Srgrimes *endcp = '\0'; 8521558Srgrimes got_nondir = 1; 8531558Srgrimes if (ep == (struct exportlist *)NULL) { 8541558Srgrimes getexp_err(ep, tgrp); 8551558Srgrimes goto nextline; 8561558Srgrimes } 8571558Srgrimes 8581558Srgrimes /* 8591558Srgrimes * Get the host or netgroup. 8601558Srgrimes */ 8611558Srgrimes setnetgrent(cp); 8621558Srgrimes netgrp = getnetgrent(&hst, &usr, &dom); 8631558Srgrimes do { 8641558Srgrimes if (has_host) { 8651558Srgrimes grp->gr_next = get_grp(); 8661558Srgrimes grp = grp->gr_next; 8671558Srgrimes } 8681558Srgrimes if (netgrp) { 8697401Swpaul if (get_host(hst, grp, tgrp)) { 8701558Srgrimes syslog(LOG_ERR, "Bad netgroup %s", cp); 8711558Srgrimes getexp_err(ep, tgrp); 8729336Sdfr endnetgrent(); 8731558Srgrimes goto nextline; 8741558Srgrimes } 8757401Swpaul } else if (get_host(cp, grp, tgrp)) { 8761558Srgrimes getexp_err(ep, tgrp); 8771558Srgrimes goto nextline; 8781558Srgrimes } 8791558Srgrimes has_host = TRUE; 8801558Srgrimes } while (netgrp && getnetgrent(&hst, &usr, &dom)); 8811558Srgrimes endnetgrent(); 8821558Srgrimes *endcp = savedc; 8831558Srgrimes } 8841558Srgrimes cp = endcp; 8851558Srgrimes nextfield(&cp, &endcp); 8861558Srgrimes len = endcp - cp; 8871558Srgrimes } 8881558Srgrimes if (check_options(dirhead)) { 8891558Srgrimes getexp_err(ep, tgrp); 8901558Srgrimes goto nextline; 8911558Srgrimes } 8921558Srgrimes if (!has_host) { 8931558Srgrimes grp->gr_type = GT_HOST; 8941558Srgrimes if (debug) 8951558Srgrimes fprintf(stderr,"Adding a default entry\n"); 8961558Srgrimes /* add a default group and make the grp list NULL */ 8971558Srgrimes hpe = (struct hostent *)malloc(sizeof(struct hostent)); 8981558Srgrimes if (hpe == (struct hostent *)NULL) 8991558Srgrimes out_of_mem(); 90012348Sjoerg hpe->h_name = strdup("Default"); 9011558Srgrimes hpe->h_addrtype = AF_INET; 9021558Srgrimes hpe->h_length = sizeof (u_long); 9031558Srgrimes hpe->h_addr_list = (char **)NULL; 9041558Srgrimes grp->gr_ptr.gt_hostent = hpe; 9051558Srgrimes 9061558Srgrimes /* 9071558Srgrimes * Don't allow a network export coincide with a list of 9081558Srgrimes * host(s) on the same line. 9091558Srgrimes */ 9101558Srgrimes } else if ((opt_flags & OP_NET) && tgrp->gr_next) { 9111558Srgrimes getexp_err(ep, tgrp); 9121558Srgrimes goto nextline; 9131558Srgrimes } 9141558Srgrimes 9151558Srgrimes /* 9161558Srgrimes * Loop through hosts, pushing the exports into the kernel. 9171558Srgrimes * After loop, tgrp points to the start of the list and 9181558Srgrimes * grp points to the last entry in the list. 9191558Srgrimes */ 9201558Srgrimes grp = tgrp; 9211558Srgrimes do { 9221558Srgrimes if (do_mount(ep, grp, exflags, &anon, dirp, 9231558Srgrimes dirplen, &fsb)) { 9241558Srgrimes getexp_err(ep, tgrp); 9251558Srgrimes goto nextline; 9261558Srgrimes } 9271558Srgrimes } while (grp->gr_next && (grp = grp->gr_next)); 9281558Srgrimes 9291558Srgrimes /* 9301558Srgrimes * Success. Update the data structures. 9311558Srgrimes */ 9321558Srgrimes if (has_host) { 9339336Sdfr hang_dirp(dirhead, tgrp, ep, opt_flags); 9341558Srgrimes grp->gr_next = grphead; 9351558Srgrimes grphead = tgrp; 9361558Srgrimes } else { 9371558Srgrimes hang_dirp(dirhead, (struct grouplist *)NULL, ep, 9389336Sdfr opt_flags); 9391558Srgrimes free_grp(grp); 9401558Srgrimes } 9411558Srgrimes dirhead = (struct dirlist *)NULL; 9421558Srgrimes if ((ep->ex_flag & EX_LINKED) == 0) { 9431558Srgrimes ep2 = exphead; 9441558Srgrimes epp = &exphead; 9451558Srgrimes 9461558Srgrimes /* 9471558Srgrimes * Insert in the list in alphabetical order. 9481558Srgrimes */ 9491558Srgrimes while (ep2 && strcmp(ep2->ex_fsdir, ep->ex_fsdir) < 0) { 9501558Srgrimes epp = &ep2->ex_next; 9511558Srgrimes ep2 = ep2->ex_next; 9521558Srgrimes } 9531558Srgrimes if (ep2) 9541558Srgrimes ep->ex_next = ep2; 9551558Srgrimes *epp = ep; 9561558Srgrimes ep->ex_flag |= EX_LINKED; 9571558Srgrimes } 9581558Srgrimesnextline: 9591558Srgrimes if (dirhead) { 9601558Srgrimes free_dir(dirhead); 9611558Srgrimes dirhead = (struct dirlist *)NULL; 9621558Srgrimes } 9631558Srgrimes } 9641558Srgrimes fclose(exp_file); 9651558Srgrimes} 9661558Srgrimes 9671558Srgrimes/* 9681558Srgrimes * Allocate an export list element 9691558Srgrimes */ 9701558Srgrimesstruct exportlist * 9711558Srgrimesget_exp() 9721558Srgrimes{ 9731558Srgrimes struct exportlist *ep; 9741558Srgrimes 9751558Srgrimes ep = (struct exportlist *)malloc(sizeof (struct exportlist)); 9761558Srgrimes if (ep == (struct exportlist *)NULL) 9771558Srgrimes out_of_mem(); 97823681Speter memset(ep, 0, sizeof(struct exportlist)); 9791558Srgrimes return (ep); 9801558Srgrimes} 9811558Srgrimes 9821558Srgrimes/* 9831558Srgrimes * Allocate a group list element 9841558Srgrimes */ 9851558Srgrimesstruct grouplist * 9861558Srgrimesget_grp() 9871558Srgrimes{ 9881558Srgrimes struct grouplist *gp; 9891558Srgrimes 9901558Srgrimes gp = (struct grouplist *)malloc(sizeof (struct grouplist)); 9911558Srgrimes if (gp == (struct grouplist *)NULL) 9921558Srgrimes out_of_mem(); 99323681Speter memset(gp, 0, sizeof(struct grouplist)); 9941558Srgrimes return (gp); 9951558Srgrimes} 9961558Srgrimes 9971558Srgrimes/* 9981558Srgrimes * Clean up upon an error in get_exportlist(). 9991558Srgrimes */ 10001558Srgrimesvoid 10011558Srgrimesgetexp_err(ep, grp) 10021558Srgrimes struct exportlist *ep; 10031558Srgrimes struct grouplist *grp; 10041558Srgrimes{ 10051558Srgrimes struct grouplist *tgrp; 10061558Srgrimes 10071558Srgrimes syslog(LOG_ERR, "Bad exports list line %s", line); 10081558Srgrimes if (ep && (ep->ex_flag & EX_LINKED) == 0) 10091558Srgrimes free_exp(ep); 10101558Srgrimes while (grp) { 10111558Srgrimes tgrp = grp; 10121558Srgrimes grp = grp->gr_next; 10131558Srgrimes free_grp(tgrp); 10141558Srgrimes } 10151558Srgrimes} 10161558Srgrimes 10171558Srgrimes/* 10181558Srgrimes * Search the export list for a matching fs. 10191558Srgrimes */ 10201558Srgrimesstruct exportlist * 10211558Srgrimesex_search(fsid) 10221558Srgrimes fsid_t *fsid; 10231558Srgrimes{ 10241558Srgrimes struct exportlist *ep; 10251558Srgrimes 10261558Srgrimes ep = exphead; 10271558Srgrimes while (ep) { 10281558Srgrimes if (ep->ex_fs.val[0] == fsid->val[0] && 10291558Srgrimes ep->ex_fs.val[1] == fsid->val[1]) 10301558Srgrimes return (ep); 10311558Srgrimes ep = ep->ex_next; 10321558Srgrimes } 10331558Srgrimes return (ep); 10341558Srgrimes} 10351558Srgrimes 10361558Srgrimes/* 10371558Srgrimes * Add a directory path to the list. 10381558Srgrimes */ 10391558Srgrimeschar * 10401558Srgrimesadd_expdir(dpp, cp, len) 10411558Srgrimes struct dirlist **dpp; 10421558Srgrimes char *cp; 10431558Srgrimes int len; 10441558Srgrimes{ 10451558Srgrimes struct dirlist *dp; 10461558Srgrimes 10471558Srgrimes dp = (struct dirlist *)malloc(sizeof (struct dirlist) + len); 10481558Srgrimes dp->dp_left = *dpp; 10491558Srgrimes dp->dp_right = (struct dirlist *)NULL; 10501558Srgrimes dp->dp_flag = 0; 10511558Srgrimes dp->dp_hosts = (struct hostlist *)NULL; 10521558Srgrimes strcpy(dp->dp_dirp, cp); 10531558Srgrimes *dpp = dp; 10541558Srgrimes return (dp->dp_dirp); 10551558Srgrimes} 10561558Srgrimes 10571558Srgrimes/* 10581558Srgrimes * Hang the dir list element off the dirpath binary tree as required 10591558Srgrimes * and update the entry for host. 10601558Srgrimes */ 10611558Srgrimesvoid 10629336Sdfrhang_dirp(dp, grp, ep, flags) 10631558Srgrimes struct dirlist *dp; 10641558Srgrimes struct grouplist *grp; 10651558Srgrimes struct exportlist *ep; 10669336Sdfr int flags; 10671558Srgrimes{ 10681558Srgrimes struct hostlist *hp; 10691558Srgrimes struct dirlist *dp2; 10701558Srgrimes 10719336Sdfr if (flags & OP_ALLDIRS) { 10721558Srgrimes if (ep->ex_defdir) 10731558Srgrimes free((caddr_t)dp); 10741558Srgrimes else 10751558Srgrimes ep->ex_defdir = dp; 10769336Sdfr if (grp == (struct grouplist *)NULL) { 10771558Srgrimes ep->ex_defdir->dp_flag |= DP_DEFSET; 10789336Sdfr if (flags & OP_KERB) 10799336Sdfr ep->ex_defdir->dp_flag |= DP_KERB; 10809336Sdfr } else while (grp) { 10811558Srgrimes hp = get_ht(); 10829336Sdfr if (flags & OP_KERB) 10839336Sdfr hp->ht_flag |= DP_KERB; 10841558Srgrimes hp->ht_grp = grp; 10851558Srgrimes hp->ht_next = ep->ex_defdir->dp_hosts; 10861558Srgrimes ep->ex_defdir->dp_hosts = hp; 10871558Srgrimes grp = grp->gr_next; 10881558Srgrimes } 10891558Srgrimes } else { 10901558Srgrimes 10911558Srgrimes /* 10921558Srgrimes * Loop throught the directories adding them to the tree. 10931558Srgrimes */ 10941558Srgrimes while (dp) { 10951558Srgrimes dp2 = dp->dp_left; 10969336Sdfr add_dlist(&ep->ex_dirl, dp, grp, flags); 10971558Srgrimes dp = dp2; 10981558Srgrimes } 10991558Srgrimes } 11001558Srgrimes} 11011558Srgrimes 11021558Srgrimes/* 11031558Srgrimes * Traverse the binary tree either updating a node that is already there 11041558Srgrimes * for the new directory or adding the new node. 11051558Srgrimes */ 11061558Srgrimesvoid 11079336Sdfradd_dlist(dpp, newdp, grp, flags) 11081558Srgrimes struct dirlist **dpp; 11091558Srgrimes struct dirlist *newdp; 11101558Srgrimes struct grouplist *grp; 11119336Sdfr int flags; 11121558Srgrimes{ 11131558Srgrimes struct dirlist *dp; 11141558Srgrimes struct hostlist *hp; 11151558Srgrimes int cmp; 11161558Srgrimes 11171558Srgrimes dp = *dpp; 11181558Srgrimes if (dp) { 11191558Srgrimes cmp = strcmp(dp->dp_dirp, newdp->dp_dirp); 11201558Srgrimes if (cmp > 0) { 11219336Sdfr add_dlist(&dp->dp_left, newdp, grp, flags); 11221558Srgrimes return; 11231558Srgrimes } else if (cmp < 0) { 11249336Sdfr add_dlist(&dp->dp_right, newdp, grp, flags); 11251558Srgrimes return; 11261558Srgrimes } else 11271558Srgrimes free((caddr_t)newdp); 11281558Srgrimes } else { 11291558Srgrimes dp = newdp; 11301558Srgrimes dp->dp_left = (struct dirlist *)NULL; 11311558Srgrimes *dpp = dp; 11321558Srgrimes } 11331558Srgrimes if (grp) { 11341558Srgrimes 11351558Srgrimes /* 11361558Srgrimes * Hang all of the host(s) off of the directory point. 11371558Srgrimes */ 11381558Srgrimes do { 11391558Srgrimes hp = get_ht(); 11409336Sdfr if (flags & OP_KERB) 11419336Sdfr hp->ht_flag |= DP_KERB; 11421558Srgrimes hp->ht_grp = grp; 11431558Srgrimes hp->ht_next = dp->dp_hosts; 11441558Srgrimes dp->dp_hosts = hp; 11451558Srgrimes grp = grp->gr_next; 11461558Srgrimes } while (grp); 11479336Sdfr } else { 11481558Srgrimes dp->dp_flag |= DP_DEFSET; 11499336Sdfr if (flags & OP_KERB) 11509336Sdfr dp->dp_flag |= DP_KERB; 11519336Sdfr } 11521558Srgrimes} 11531558Srgrimes 11541558Srgrimes/* 11551558Srgrimes * Search for a dirpath on the export point. 11561558Srgrimes */ 11571558Srgrimesstruct dirlist * 11581558Srgrimesdirp_search(dp, dirpath) 11591558Srgrimes struct dirlist *dp; 11601558Srgrimes char *dirpath; 11611558Srgrimes{ 11621558Srgrimes int cmp; 11631558Srgrimes 11641558Srgrimes if (dp) { 11651558Srgrimes cmp = strcmp(dp->dp_dirp, dirpath); 11661558Srgrimes if (cmp > 0) 11671558Srgrimes return (dirp_search(dp->dp_left, dirpath)); 11681558Srgrimes else if (cmp < 0) 11691558Srgrimes return (dirp_search(dp->dp_right, dirpath)); 11701558Srgrimes else 11711558Srgrimes return (dp); 11721558Srgrimes } 11731558Srgrimes return (dp); 11741558Srgrimes} 11751558Srgrimes 11761558Srgrimes/* 11771558Srgrimes * Scan for a host match in a directory tree. 11781558Srgrimes */ 11791558Srgrimesint 11809336Sdfrchk_host(dp, saddr, defsetp, hostsetp) 11811558Srgrimes struct dirlist *dp; 11821558Srgrimes u_long saddr; 11831558Srgrimes int *defsetp; 11849336Sdfr int *hostsetp; 11851558Srgrimes{ 11861558Srgrimes struct hostlist *hp; 11871558Srgrimes struct grouplist *grp; 11881558Srgrimes u_long **addrp; 11891558Srgrimes 11901558Srgrimes if (dp) { 11911558Srgrimes if (dp->dp_flag & DP_DEFSET) 11929336Sdfr *defsetp = dp->dp_flag; 11931558Srgrimes hp = dp->dp_hosts; 11941558Srgrimes while (hp) { 11951558Srgrimes grp = hp->ht_grp; 11961558Srgrimes switch (grp->gr_type) { 11971558Srgrimes case GT_HOST: 11981558Srgrimes addrp = (u_long **) 11991558Srgrimes grp->gr_ptr.gt_hostent->h_addr_list; 12001558Srgrimes while (*addrp) { 12019336Sdfr if (**addrp == saddr) { 12029336Sdfr *hostsetp = (hp->ht_flag | DP_HOSTSET); 12031558Srgrimes return (1); 12049336Sdfr } 12051558Srgrimes addrp++; 12061558Srgrimes } 12071558Srgrimes break; 12081558Srgrimes case GT_NET: 12091558Srgrimes if ((saddr & grp->gr_ptr.gt_net.nt_mask) == 12109336Sdfr grp->gr_ptr.gt_net.nt_net) { 12119336Sdfr *hostsetp = (hp->ht_flag | DP_HOSTSET); 12121558Srgrimes return (1); 12139336Sdfr } 12141558Srgrimes break; 12151558Srgrimes }; 12161558Srgrimes hp = hp->ht_next; 12171558Srgrimes } 12181558Srgrimes } 12191558Srgrimes return (0); 12201558Srgrimes} 12211558Srgrimes 12221558Srgrimes/* 12231558Srgrimes * Scan tree for a host that matches the address. 12241558Srgrimes */ 12251558Srgrimesint 12261558Srgrimesscan_tree(dp, saddr) 12271558Srgrimes struct dirlist *dp; 12281558Srgrimes u_long saddr; 12291558Srgrimes{ 12309336Sdfr int defset, hostset; 12311558Srgrimes 12321558Srgrimes if (dp) { 12331558Srgrimes if (scan_tree(dp->dp_left, saddr)) 12341558Srgrimes return (1); 12359336Sdfr if (chk_host(dp, saddr, &defset, &hostset)) 12361558Srgrimes return (1); 12371558Srgrimes if (scan_tree(dp->dp_right, saddr)) 12381558Srgrimes return (1); 12391558Srgrimes } 12401558Srgrimes return (0); 12411558Srgrimes} 12421558Srgrimes 12431558Srgrimes/* 12441558Srgrimes * Traverse the dirlist tree and free it up. 12451558Srgrimes */ 12461558Srgrimesvoid 12471558Srgrimesfree_dir(dp) 12481558Srgrimes struct dirlist *dp; 12491558Srgrimes{ 12501558Srgrimes 12511558Srgrimes if (dp) { 12521558Srgrimes free_dir(dp->dp_left); 12531558Srgrimes free_dir(dp->dp_right); 12541558Srgrimes free_host(dp->dp_hosts); 12551558Srgrimes free((caddr_t)dp); 12561558Srgrimes } 12571558Srgrimes} 12581558Srgrimes 12591558Srgrimes/* 12601558Srgrimes * Parse the option string and update fields. 12611558Srgrimes * Option arguments may either be -<option>=<value> or 12621558Srgrimes * -<option> <value> 12631558Srgrimes */ 12641558Srgrimesint 12651558Srgrimesdo_opt(cpp, endcpp, ep, grp, has_hostp, exflagsp, cr) 12661558Srgrimes char **cpp, **endcpp; 12671558Srgrimes struct exportlist *ep; 12681558Srgrimes struct grouplist *grp; 12691558Srgrimes int *has_hostp; 12701558Srgrimes int *exflagsp; 12711558Srgrimes struct ucred *cr; 12721558Srgrimes{ 12731558Srgrimes char *cpoptarg, *cpoptend; 12741558Srgrimes char *cp, *endcp, *cpopt, savedc, savedc2; 12751558Srgrimes int allflag, usedarg; 12761558Srgrimes 12771558Srgrimes cpopt = *cpp; 12781558Srgrimes cpopt++; 12791558Srgrimes cp = *endcpp; 12801558Srgrimes savedc = *cp; 12811558Srgrimes *cp = '\0'; 12821558Srgrimes while (cpopt && *cpopt) { 12831558Srgrimes allflag = 1; 12841558Srgrimes usedarg = -2; 128523681Speter if (cpoptend = strchr(cpopt, ',')) { 12861558Srgrimes *cpoptend++ = '\0'; 128723681Speter if (cpoptarg = strchr(cpopt, '=')) 12881558Srgrimes *cpoptarg++ = '\0'; 12891558Srgrimes } else { 129023681Speter if (cpoptarg = strchr(cpopt, '=')) 12911558Srgrimes *cpoptarg++ = '\0'; 12921558Srgrimes else { 12931558Srgrimes *cp = savedc; 12941558Srgrimes nextfield(&cp, &endcp); 12951558Srgrimes **endcpp = '\0'; 12961558Srgrimes if (endcp > cp && *cp != '-') { 12971558Srgrimes cpoptarg = cp; 12981558Srgrimes savedc2 = *endcp; 12991558Srgrimes *endcp = '\0'; 13001558Srgrimes usedarg = 0; 13011558Srgrimes } 13021558Srgrimes } 13031558Srgrimes } 13041558Srgrimes if (!strcmp(cpopt, "ro") || !strcmp(cpopt, "o")) { 13051558Srgrimes *exflagsp |= MNT_EXRDONLY; 13061558Srgrimes } else if (cpoptarg && (!strcmp(cpopt, "maproot") || 13071558Srgrimes !(allflag = strcmp(cpopt, "mapall")) || 13081558Srgrimes !strcmp(cpopt, "root") || !strcmp(cpopt, "r"))) { 13091558Srgrimes usedarg++; 13101558Srgrimes parsecred(cpoptarg, cr); 13111558Srgrimes if (allflag == 0) { 13121558Srgrimes *exflagsp |= MNT_EXPORTANON; 13131558Srgrimes opt_flags |= OP_MAPALL; 13141558Srgrimes } else 13151558Srgrimes opt_flags |= OP_MAPROOT; 13161558Srgrimes } else if (!strcmp(cpopt, "kerb") || !strcmp(cpopt, "k")) { 13171558Srgrimes *exflagsp |= MNT_EXKERB; 13181558Srgrimes opt_flags |= OP_KERB; 13191558Srgrimes } else if (cpoptarg && (!strcmp(cpopt, "mask") || 13201558Srgrimes !strcmp(cpopt, "m"))) { 13211558Srgrimes if (get_net(cpoptarg, &grp->gr_ptr.gt_net, 1)) { 13221558Srgrimes syslog(LOG_ERR, "Bad mask: %s", cpoptarg); 13231558Srgrimes return (1); 13241558Srgrimes } 13251558Srgrimes usedarg++; 13261558Srgrimes opt_flags |= OP_MASK; 13271558Srgrimes } else if (cpoptarg && (!strcmp(cpopt, "network") || 13281558Srgrimes !strcmp(cpopt, "n"))) { 13291558Srgrimes if (grp->gr_type != GT_NULL) { 13301558Srgrimes syslog(LOG_ERR, "Network/host conflict"); 13311558Srgrimes return (1); 13321558Srgrimes } else if (get_net(cpoptarg, &grp->gr_ptr.gt_net, 0)) { 13331558Srgrimes syslog(LOG_ERR, "Bad net: %s", cpoptarg); 13341558Srgrimes return (1); 13351558Srgrimes } 13361558Srgrimes grp->gr_type = GT_NET; 13371558Srgrimes *has_hostp = 1; 13381558Srgrimes usedarg++; 13391558Srgrimes opt_flags |= OP_NET; 13401558Srgrimes } else if (!strcmp(cpopt, "alldirs")) { 13411558Srgrimes opt_flags |= OP_ALLDIRS; 13421558Srgrimes#ifdef ISO 13431558Srgrimes } else if (cpoptarg && !strcmp(cpopt, "iso")) { 13441558Srgrimes if (get_isoaddr(cpoptarg, grp)) { 13451558Srgrimes syslog(LOG_ERR, "Bad iso addr: %s", cpoptarg); 13461558Srgrimes return (1); 13471558Srgrimes } 13481558Srgrimes *has_hostp = 1; 13491558Srgrimes usedarg++; 13501558Srgrimes opt_flags |= OP_ISO; 13511558Srgrimes#endif /* ISO */ 13521558Srgrimes } else { 13531558Srgrimes syslog(LOG_ERR, "Bad opt %s", cpopt); 13541558Srgrimes return (1); 13551558Srgrimes } 13561558Srgrimes if (usedarg >= 0) { 13571558Srgrimes *endcp = savedc2; 13581558Srgrimes **endcpp = savedc; 13591558Srgrimes if (usedarg > 0) { 13601558Srgrimes *cpp = cp; 13611558Srgrimes *endcpp = endcp; 13621558Srgrimes } 13631558Srgrimes return (0); 13641558Srgrimes } 13651558Srgrimes cpopt = cpoptend; 13661558Srgrimes } 13671558Srgrimes **endcpp = savedc; 13681558Srgrimes return (0); 13691558Srgrimes} 13701558Srgrimes 13711558Srgrimes/* 13721558Srgrimes * Translate a character string to the corresponding list of network 13731558Srgrimes * addresses for a hostname. 13741558Srgrimes */ 13751558Srgrimesint 13767401Swpaulget_host(cp, grp, tgrp) 13771558Srgrimes char *cp; 13781558Srgrimes struct grouplist *grp; 13797401Swpaul struct grouplist *tgrp; 13801558Srgrimes{ 13817401Swpaul struct grouplist *checkgrp; 13821558Srgrimes struct hostent *hp, *nhp; 13831558Srgrimes char **addrp, **naddrp; 13841558Srgrimes struct hostent t_host; 13851558Srgrimes int i; 13861558Srgrimes u_long saddr; 13871558Srgrimes char *aptr[2]; 13881558Srgrimes 13891558Srgrimes if (grp->gr_type != GT_NULL) 13901558Srgrimes return (1); 13911558Srgrimes if ((hp = gethostbyname(cp)) == NULL) { 13921558Srgrimes if (isdigit(*cp)) { 13931558Srgrimes saddr = inet_addr(cp); 13941558Srgrimes if (saddr == -1) { 13959336Sdfr syslog(LOG_ERR, "Inet_addr failed for %s", cp); 13961558Srgrimes return (1); 13971558Srgrimes } 13981558Srgrimes if ((hp = gethostbyaddr((caddr_t)&saddr, sizeof (saddr), 13991558Srgrimes AF_INET)) == NULL) { 14001558Srgrimes hp = &t_host; 14011558Srgrimes hp->h_name = cp; 14021558Srgrimes hp->h_addrtype = AF_INET; 14031558Srgrimes hp->h_length = sizeof (u_long); 14041558Srgrimes hp->h_addr_list = aptr; 14051558Srgrimes aptr[0] = (char *)&saddr; 14061558Srgrimes aptr[1] = (char *)NULL; 14071558Srgrimes } 14081558Srgrimes } else { 14099336Sdfr syslog(LOG_ERR, "Gethostbyname failed for %s", cp); 14101558Srgrimes return (1); 14111558Srgrimes } 14121558Srgrimes } 14137401Swpaul /* 14147401Swpaul * Sanity check: make sure we don't already have an entry 14157401Swpaul * for this host in the grouplist. 14167401Swpaul */ 14177401Swpaul checkgrp = tgrp; 14187401Swpaul while (checkgrp) { 141917887Swpaul if (checkgrp->gr_type == GT_HOST && 142017887Swpaul checkgrp->gr_ptr.gt_hostent != NULL && 14217401Swpaul !strcmp(checkgrp->gr_ptr.gt_hostent->h_name, hp->h_name)) { 14227401Swpaul grp->gr_type = GT_IGNORE; 14237401Swpaul return(0); 14247401Swpaul } 14257401Swpaul checkgrp = checkgrp->gr_next; 14267401Swpaul } 14277401Swpaul 14281558Srgrimes grp->gr_type = GT_HOST; 14291558Srgrimes nhp = grp->gr_ptr.gt_hostent = (struct hostent *) 14301558Srgrimes malloc(sizeof(struct hostent)); 14311558Srgrimes if (nhp == (struct hostent *)NULL) 14321558Srgrimes out_of_mem(); 143323681Speter memmove(nhp, hp, sizeof(struct hostent)); 14341558Srgrimes i = strlen(hp->h_name)+1; 14351558Srgrimes nhp->h_name = (char *)malloc(i); 14361558Srgrimes if (nhp->h_name == (char *)NULL) 14371558Srgrimes out_of_mem(); 143823681Speter memmove(nhp->h_name, hp->h_name, i); 14391558Srgrimes addrp = hp->h_addr_list; 14401558Srgrimes i = 1; 14411558Srgrimes while (*addrp++) 14421558Srgrimes i++; 14431558Srgrimes naddrp = nhp->h_addr_list = (char **) 14441558Srgrimes malloc(i*sizeof(char *)); 14451558Srgrimes if (naddrp == (char **)NULL) 14461558Srgrimes out_of_mem(); 14471558Srgrimes addrp = hp->h_addr_list; 14481558Srgrimes while (*addrp) { 14491558Srgrimes *naddrp = (char *) 14501558Srgrimes malloc(hp->h_length); 14511558Srgrimes if (*naddrp == (char *)NULL) 14521558Srgrimes out_of_mem(); 145323681Speter memmove(*naddrp, *addrp, hp->h_length); 14541558Srgrimes addrp++; 14551558Srgrimes naddrp++; 14561558Srgrimes } 14571558Srgrimes *naddrp = (char *)NULL; 14581558Srgrimes if (debug) 14591558Srgrimes fprintf(stderr, "got host %s\n", hp->h_name); 14601558Srgrimes return (0); 14611558Srgrimes} 14621558Srgrimes 14631558Srgrimes/* 14641558Srgrimes * Free up an exports list component 14651558Srgrimes */ 14661558Srgrimesvoid 14671558Srgrimesfree_exp(ep) 14681558Srgrimes struct exportlist *ep; 14691558Srgrimes{ 14701558Srgrimes 14711558Srgrimes if (ep->ex_defdir) { 14721558Srgrimes free_host(ep->ex_defdir->dp_hosts); 14731558Srgrimes free((caddr_t)ep->ex_defdir); 14741558Srgrimes } 14751558Srgrimes if (ep->ex_fsdir) 14761558Srgrimes free(ep->ex_fsdir); 14771558Srgrimes free_dir(ep->ex_dirl); 14781558Srgrimes free((caddr_t)ep); 14791558Srgrimes} 14801558Srgrimes 14811558Srgrimes/* 14821558Srgrimes * Free hosts. 14831558Srgrimes */ 14841558Srgrimesvoid 14851558Srgrimesfree_host(hp) 14861558Srgrimes struct hostlist *hp; 14871558Srgrimes{ 14881558Srgrimes struct hostlist *hp2; 14891558Srgrimes 14901558Srgrimes while (hp) { 14911558Srgrimes hp2 = hp; 14921558Srgrimes hp = hp->ht_next; 14931558Srgrimes free((caddr_t)hp2); 14941558Srgrimes } 14951558Srgrimes} 14961558Srgrimes 14971558Srgrimesstruct hostlist * 14981558Srgrimesget_ht() 14991558Srgrimes{ 15001558Srgrimes struct hostlist *hp; 15011558Srgrimes 15021558Srgrimes hp = (struct hostlist *)malloc(sizeof (struct hostlist)); 15031558Srgrimes if (hp == (struct hostlist *)NULL) 15041558Srgrimes out_of_mem(); 15051558Srgrimes hp->ht_next = (struct hostlist *)NULL; 15069336Sdfr hp->ht_flag = 0; 15071558Srgrimes return (hp); 15081558Srgrimes} 15091558Srgrimes 15101558Srgrimes#ifdef ISO 15111558Srgrimes/* 15121558Srgrimes * Translate an iso address. 15131558Srgrimes */ 15141558Srgrimesget_isoaddr(cp, grp) 15151558Srgrimes char *cp; 15161558Srgrimes struct grouplist *grp; 15171558Srgrimes{ 15181558Srgrimes struct iso_addr *isop; 15191558Srgrimes struct sockaddr_iso *isoaddr; 15201558Srgrimes 15211558Srgrimes if (grp->gr_type != GT_NULL) 15221558Srgrimes return (1); 15231558Srgrimes if ((isop = iso_addr(cp)) == NULL) { 15241558Srgrimes syslog(LOG_ERR, 15251558Srgrimes "iso_addr failed, ignored"); 15261558Srgrimes return (1); 15271558Srgrimes } 15281558Srgrimes isoaddr = (struct sockaddr_iso *) 15291558Srgrimes malloc(sizeof (struct sockaddr_iso)); 15301558Srgrimes if (isoaddr == (struct sockaddr_iso *)NULL) 15311558Srgrimes out_of_mem(); 153223681Speter memset(isoaddr, 0, sizeof(struct sockaddr_iso)); 153323681Speter memmove(&isoaddr->siso_addr, isop, sizeof(struct iso_addr)); 153423681Speter isoaddr->siso_len = sizeof(struct sockaddr_iso); 15351558Srgrimes isoaddr->siso_family = AF_ISO; 15361558Srgrimes grp->gr_type = GT_ISO; 15371558Srgrimes grp->gr_ptr.gt_isoaddr = isoaddr; 15381558Srgrimes return (0); 15391558Srgrimes} 15401558Srgrimes#endif /* ISO */ 15411558Srgrimes 15421558Srgrimes/* 15431558Srgrimes * Out of memory, fatal 15441558Srgrimes */ 15451558Srgrimesvoid 15461558Srgrimesout_of_mem() 15471558Srgrimes{ 15481558Srgrimes 15491558Srgrimes syslog(LOG_ERR, "Out of memory"); 15501558Srgrimes exit(2); 15511558Srgrimes} 15521558Srgrimes 15531558Srgrimes/* 15541558Srgrimes * Do the mount syscall with the update flag to push the export info into 15551558Srgrimes * the kernel. 15561558Srgrimes */ 15571558Srgrimesint 15581558Srgrimesdo_mount(ep, grp, exflags, anoncrp, dirp, dirplen, fsb) 15591558Srgrimes struct exportlist *ep; 15601558Srgrimes struct grouplist *grp; 15611558Srgrimes int exflags; 15621558Srgrimes struct ucred *anoncrp; 15631558Srgrimes char *dirp; 15641558Srgrimes int dirplen; 15651558Srgrimes struct statfs *fsb; 15661558Srgrimes{ 15671558Srgrimes char *cp = (char *)NULL; 15681558Srgrimes u_long **addrp; 15691558Srgrimes int done; 15701558Srgrimes char savedc = '\0'; 15711558Srgrimes struct sockaddr_in sin, imask; 15721558Srgrimes union { 15731558Srgrimes struct ufs_args ua; 15741558Srgrimes struct iso_args ia; 15751558Srgrimes struct mfs_args ma; 15769336Sdfr#ifdef __NetBSD__ 15779336Sdfr struct msdosfs_args da; 15789336Sdfr#endif 15791558Srgrimes } args; 15801558Srgrimes u_long net; 15811558Srgrimes 15821558Srgrimes args.ua.fspec = 0; 15831558Srgrimes args.ua.export.ex_flags = exflags; 15841558Srgrimes args.ua.export.ex_anon = *anoncrp; 158523681Speter memset(&sin, 0, sizeof(sin)); 158623681Speter memset(&imask, 0, sizeof(imask)); 15871558Srgrimes sin.sin_family = AF_INET; 15881558Srgrimes sin.sin_len = sizeof(sin); 15891558Srgrimes imask.sin_family = AF_INET; 15901558Srgrimes imask.sin_len = sizeof(sin); 15911558Srgrimes if (grp->gr_type == GT_HOST) 15921558Srgrimes addrp = (u_long **)grp->gr_ptr.gt_hostent->h_addr_list; 15931558Srgrimes else 15941558Srgrimes addrp = (u_long **)NULL; 15951558Srgrimes done = FALSE; 15961558Srgrimes while (!done) { 15971558Srgrimes switch (grp->gr_type) { 15981558Srgrimes case GT_HOST: 15991558Srgrimes if (addrp) { 16001558Srgrimes sin.sin_addr.s_addr = **addrp; 16011558Srgrimes args.ua.export.ex_addrlen = sizeof(sin); 16021558Srgrimes } else 16031558Srgrimes args.ua.export.ex_addrlen = 0; 16041558Srgrimes args.ua.export.ex_addr = (struct sockaddr *)&sin; 16051558Srgrimes args.ua.export.ex_masklen = 0; 16061558Srgrimes break; 16071558Srgrimes case GT_NET: 16081558Srgrimes if (grp->gr_ptr.gt_net.nt_mask) 16091558Srgrimes imask.sin_addr.s_addr = grp->gr_ptr.gt_net.nt_mask; 16101558Srgrimes else { 16111558Srgrimes net = ntohl(grp->gr_ptr.gt_net.nt_net); 16121558Srgrimes if (IN_CLASSA(net)) 16131558Srgrimes imask.sin_addr.s_addr = inet_addr("255.0.0.0"); 16141558Srgrimes else if (IN_CLASSB(net)) 16151558Srgrimes imask.sin_addr.s_addr = 16161558Srgrimes inet_addr("255.255.0.0"); 16171558Srgrimes else 16181558Srgrimes imask.sin_addr.s_addr = 16191558Srgrimes inet_addr("255.255.255.0"); 16201558Srgrimes grp->gr_ptr.gt_net.nt_mask = imask.sin_addr.s_addr; 16211558Srgrimes } 16221558Srgrimes sin.sin_addr.s_addr = grp->gr_ptr.gt_net.nt_net; 16231558Srgrimes args.ua.export.ex_addr = (struct sockaddr *)&sin; 16241558Srgrimes args.ua.export.ex_addrlen = sizeof (sin); 16251558Srgrimes args.ua.export.ex_mask = (struct sockaddr *)&imask; 16261558Srgrimes args.ua.export.ex_masklen = sizeof (imask); 16271558Srgrimes break; 16281558Srgrimes#ifdef ISO 16291558Srgrimes case GT_ISO: 16301558Srgrimes args.ua.export.ex_addr = 16311558Srgrimes (struct sockaddr *)grp->gr_ptr.gt_isoaddr; 16321558Srgrimes args.ua.export.ex_addrlen = 16331558Srgrimes sizeof(struct sockaddr_iso); 16341558Srgrimes args.ua.export.ex_masklen = 0; 16351558Srgrimes break; 16361558Srgrimes#endif /* ISO */ 16377401Swpaul case GT_IGNORE: 16387401Swpaul return(0); 16397401Swpaul break; 16401558Srgrimes default: 16411558Srgrimes syslog(LOG_ERR, "Bad grouptype"); 16421558Srgrimes if (cp) 16431558Srgrimes *cp = savedc; 16441558Srgrimes return (1); 16451558Srgrimes }; 16461558Srgrimes 16471558Srgrimes /* 16481558Srgrimes * XXX: 16491558Srgrimes * Maybe I should just use the fsb->f_mntonname path instead 16501558Srgrimes * of looping back up the dirp to the mount point?? 16511558Srgrimes * Also, needs to know how to export all types of local 165223681Speter * exportable file systems and not just "ufs". 16531558Srgrimes */ 16549336Sdfr while (mount(fsb->f_fstypename, dirp, 16551558Srgrimes fsb->f_flags | MNT_UPDATE, (caddr_t)&args) < 0) { 16561558Srgrimes if (cp) 16571558Srgrimes *cp-- = savedc; 16581558Srgrimes else 16591558Srgrimes cp = dirp + dirplen - 1; 16601558Srgrimes if (errno == EPERM) { 16611558Srgrimes syslog(LOG_ERR, 16621558Srgrimes "Can't change attributes for %s.\n", dirp); 16631558Srgrimes return (1); 16641558Srgrimes } 16651558Srgrimes if (opt_flags & OP_ALLDIRS) { 16664895Swollman syslog(LOG_ERR, "Could not remount %s: %m", 16674895Swollman dirp); 16681558Srgrimes return (1); 16691558Srgrimes } 16701558Srgrimes /* back up over the last component */ 16711558Srgrimes while (*cp == '/' && cp > dirp) 16721558Srgrimes cp--; 16731558Srgrimes while (*(cp - 1) != '/' && cp > dirp) 16741558Srgrimes cp--; 16751558Srgrimes if (cp == dirp) { 16761558Srgrimes if (debug) 16771558Srgrimes fprintf(stderr,"mnt unsucc\n"); 16781558Srgrimes syslog(LOG_ERR, "Can't export %s", dirp); 16791558Srgrimes return (1); 16801558Srgrimes } 16811558Srgrimes savedc = *cp; 16821558Srgrimes *cp = '\0'; 16831558Srgrimes } 16841558Srgrimes if (addrp) { 16851558Srgrimes ++addrp; 16861558Srgrimes if (*addrp == (u_long *)NULL) 16871558Srgrimes done = TRUE; 16881558Srgrimes } else 16891558Srgrimes done = TRUE; 16901558Srgrimes } 16911558Srgrimes if (cp) 16921558Srgrimes *cp = savedc; 16931558Srgrimes return (0); 16941558Srgrimes} 16951558Srgrimes 16961558Srgrimes/* 16971558Srgrimes * Translate a net address. 16981558Srgrimes */ 16991558Srgrimesint 17001558Srgrimesget_net(cp, net, maskflg) 17011558Srgrimes char *cp; 17021558Srgrimes struct netmsk *net; 17031558Srgrimes int maskflg; 17041558Srgrimes{ 17051558Srgrimes struct netent *np; 17061558Srgrimes long netaddr; 17071558Srgrimes struct in_addr inetaddr, inetaddr2; 17081558Srgrimes char *name; 17091558Srgrimes 17101558Srgrimes if (np = getnetbyname(cp)) 17111558Srgrimes inetaddr = inet_makeaddr(np->n_net, 0); 17121558Srgrimes else if (isdigit(*cp)) { 17131558Srgrimes if ((netaddr = inet_network(cp)) == -1) 17141558Srgrimes return (1); 17151558Srgrimes inetaddr = inet_makeaddr(netaddr, 0); 17161558Srgrimes /* 17171558Srgrimes * Due to arbritrary subnet masks, you don't know how many 17181558Srgrimes * bits to shift the address to make it into a network, 17191558Srgrimes * however you do know how to make a network address into 17201558Srgrimes * a host with host == 0 and then compare them. 17211558Srgrimes * (What a pest) 17221558Srgrimes */ 17231558Srgrimes if (!maskflg) { 17241558Srgrimes setnetent(0); 17251558Srgrimes while (np = getnetent()) { 17261558Srgrimes inetaddr2 = inet_makeaddr(np->n_net, 0); 17271558Srgrimes if (inetaddr2.s_addr == inetaddr.s_addr) 17281558Srgrimes break; 17291558Srgrimes } 17301558Srgrimes endnetent(); 17311558Srgrimes } 17321558Srgrimes } else 17331558Srgrimes return (1); 17341558Srgrimes if (maskflg) 17351558Srgrimes net->nt_mask = inetaddr.s_addr; 17361558Srgrimes else { 17371558Srgrimes if (np) 17381558Srgrimes name = np->n_name; 17391558Srgrimes else 17401558Srgrimes name = inet_ntoa(inetaddr); 17411558Srgrimes net->nt_name = (char *)malloc(strlen(name) + 1); 17421558Srgrimes if (net->nt_name == (char *)NULL) 17431558Srgrimes out_of_mem(); 17441558Srgrimes strcpy(net->nt_name, name); 17451558Srgrimes net->nt_net = inetaddr.s_addr; 17461558Srgrimes } 17471558Srgrimes return (0); 17481558Srgrimes} 17491558Srgrimes 17501558Srgrimes/* 17511558Srgrimes * Parse out the next white space separated field 17521558Srgrimes */ 17531558Srgrimesvoid 17541558Srgrimesnextfield(cp, endcp) 17551558Srgrimes char **cp; 17561558Srgrimes char **endcp; 17571558Srgrimes{ 17581558Srgrimes char *p; 17591558Srgrimes 17601558Srgrimes p = *cp; 17611558Srgrimes while (*p == ' ' || *p == '\t') 17621558Srgrimes p++; 17631558Srgrimes if (*p == '\n' || *p == '\0') 17641558Srgrimes *cp = *endcp = p; 17651558Srgrimes else { 17661558Srgrimes *cp = p++; 17671558Srgrimes while (*p != ' ' && *p != '\t' && *p != '\n' && *p != '\0') 17681558Srgrimes p++; 17691558Srgrimes *endcp = p; 17701558Srgrimes } 17711558Srgrimes} 17721558Srgrimes 17731558Srgrimes/* 17741558Srgrimes * Get an exports file line. Skip over blank lines and handle line 17751558Srgrimes * continuations. 17761558Srgrimes */ 17771558Srgrimesint 17781558Srgrimesget_line() 17791558Srgrimes{ 17801558Srgrimes char *p, *cp; 17811558Srgrimes int len; 17821558Srgrimes int totlen, cont_line; 17831558Srgrimes 17841558Srgrimes /* 17851558Srgrimes * Loop around ignoring blank lines and getting all continuation lines. 17861558Srgrimes */ 17871558Srgrimes p = line; 17881558Srgrimes totlen = 0; 17891558Srgrimes do { 17901558Srgrimes if (fgets(p, LINESIZ - totlen, exp_file) == NULL) 17911558Srgrimes return (0); 17921558Srgrimes len = strlen(p); 17931558Srgrimes cp = p + len - 1; 17941558Srgrimes cont_line = 0; 17951558Srgrimes while (cp >= p && 17961558Srgrimes (*cp == ' ' || *cp == '\t' || *cp == '\n' || *cp == '\\')) { 17971558Srgrimes if (*cp == '\\') 17981558Srgrimes cont_line = 1; 17991558Srgrimes cp--; 18001558Srgrimes len--; 18011558Srgrimes } 18021558Srgrimes *++cp = '\0'; 18031558Srgrimes if (len > 0) { 18041558Srgrimes totlen += len; 18051558Srgrimes if (totlen >= LINESIZ) { 18061558Srgrimes syslog(LOG_ERR, "Exports line too long"); 18071558Srgrimes exit(2); 18081558Srgrimes } 18091558Srgrimes p = cp; 18101558Srgrimes } 18111558Srgrimes } while (totlen == 0 || cont_line); 18121558Srgrimes return (1); 18131558Srgrimes} 18141558Srgrimes 18151558Srgrimes/* 18161558Srgrimes * Parse a description of a credential. 18171558Srgrimes */ 18181558Srgrimesvoid 18191558Srgrimesparsecred(namelist, cr) 18201558Srgrimes char *namelist; 18211558Srgrimes struct ucred *cr; 18221558Srgrimes{ 18231558Srgrimes char *name; 18241558Srgrimes int cnt; 18251558Srgrimes char *names; 18261558Srgrimes struct passwd *pw; 18271558Srgrimes struct group *gr; 18281558Srgrimes int ngroups, groups[NGROUPS + 1]; 18291558Srgrimes 18301558Srgrimes /* 18311558Srgrimes * Set up the unpriviledged user. 18321558Srgrimes */ 18331558Srgrimes cr->cr_ref = 1; 18341558Srgrimes cr->cr_uid = -2; 18351558Srgrimes cr->cr_groups[0] = -2; 18361558Srgrimes cr->cr_ngroups = 1; 18371558Srgrimes /* 18381558Srgrimes * Get the user's password table entry. 18391558Srgrimes */ 18401558Srgrimes names = strsep(&namelist, " \t\n"); 18411558Srgrimes name = strsep(&names, ":"); 18421558Srgrimes if (isdigit(*name) || *name == '-') 18431558Srgrimes pw = getpwuid(atoi(name)); 18441558Srgrimes else 18451558Srgrimes pw = getpwnam(name); 18461558Srgrimes /* 18471558Srgrimes * Credentials specified as those of a user. 18481558Srgrimes */ 18491558Srgrimes if (names == NULL) { 18501558Srgrimes if (pw == NULL) { 18511558Srgrimes syslog(LOG_ERR, "Unknown user: %s", name); 18521558Srgrimes return; 18531558Srgrimes } 18541558Srgrimes cr->cr_uid = pw->pw_uid; 18551558Srgrimes ngroups = NGROUPS + 1; 18561558Srgrimes if (getgrouplist(pw->pw_name, pw->pw_gid, groups, &ngroups)) 18571558Srgrimes syslog(LOG_ERR, "Too many groups"); 18581558Srgrimes /* 18591558Srgrimes * Convert from int's to gid_t's and compress out duplicate 18601558Srgrimes */ 18611558Srgrimes cr->cr_ngroups = ngroups - 1; 18621558Srgrimes cr->cr_groups[0] = groups[0]; 18631558Srgrimes for (cnt = 2; cnt < ngroups; cnt++) 18641558Srgrimes cr->cr_groups[cnt - 1] = groups[cnt]; 18651558Srgrimes return; 18661558Srgrimes } 18671558Srgrimes /* 18681558Srgrimes * Explicit credential specified as a colon separated list: 18691558Srgrimes * uid:gid:gid:... 18701558Srgrimes */ 18711558Srgrimes if (pw != NULL) 18721558Srgrimes cr->cr_uid = pw->pw_uid; 18731558Srgrimes else if (isdigit(*name) || *name == '-') 18741558Srgrimes cr->cr_uid = atoi(name); 18751558Srgrimes else { 18761558Srgrimes syslog(LOG_ERR, "Unknown user: %s", name); 18771558Srgrimes return; 18781558Srgrimes } 18791558Srgrimes cr->cr_ngroups = 0; 18801558Srgrimes while (names != NULL && *names != '\0' && cr->cr_ngroups < NGROUPS) { 18811558Srgrimes name = strsep(&names, ":"); 18821558Srgrimes if (isdigit(*name) || *name == '-') { 18831558Srgrimes cr->cr_groups[cr->cr_ngroups++] = atoi(name); 18841558Srgrimes } else { 18851558Srgrimes if ((gr = getgrnam(name)) == NULL) { 18861558Srgrimes syslog(LOG_ERR, "Unknown group: %s", name); 18871558Srgrimes continue; 18881558Srgrimes } 18891558Srgrimes cr->cr_groups[cr->cr_ngroups++] = gr->gr_gid; 18901558Srgrimes } 18911558Srgrimes } 18921558Srgrimes if (names != NULL && *names != '\0' && cr->cr_ngroups == NGROUPS) 18931558Srgrimes syslog(LOG_ERR, "Too many groups"); 18941558Srgrimes} 18951558Srgrimes 18961558Srgrimes#define STRSIZ (RPCMNT_NAMELEN+RPCMNT_PATHLEN+50) 18971558Srgrimes/* 18981558Srgrimes * Routines that maintain the remote mounttab 18991558Srgrimes */ 19001558Srgrimesvoid 19011558Srgrimesget_mountlist() 19021558Srgrimes{ 19031558Srgrimes struct mountlist *mlp, **mlpp; 190423681Speter char *host, *dirp, *cp; 19051558Srgrimes int len; 19061558Srgrimes char str[STRSIZ]; 19071558Srgrimes FILE *mlfile; 19081558Srgrimes 19091558Srgrimes if ((mlfile = fopen(_PATH_RMOUNTLIST, "r")) == NULL) { 19101558Srgrimes syslog(LOG_ERR, "Can't open %s", _PATH_RMOUNTLIST); 19111558Srgrimes return; 19121558Srgrimes } 19131558Srgrimes mlpp = &mlhead; 19141558Srgrimes while (fgets(str, STRSIZ, mlfile) != NULL) { 191523681Speter cp = str; 191623681Speter host = strsep(&cp, " \t\n"); 191723681Speter dirp = strsep(&cp, " \t\n"); 191823681Speter if (host == NULL || dirp == NULL) 19191558Srgrimes continue; 19201558Srgrimes mlp = (struct mountlist *)malloc(sizeof (*mlp)); 192123681Speter strncpy(mlp->ml_host, host, RPCMNT_NAMELEN); 192223681Speter mlp->ml_host[RPCMNT_NAMELEN] = '\0'; 192323681Speter strncpy(mlp->ml_dirp, dirp, RPCMNT_PATHLEN); 192423681Speter mlp->ml_dirp[RPCMNT_PATHLEN] = '\0'; 19251558Srgrimes mlp->ml_next = (struct mountlist *)NULL; 19261558Srgrimes *mlpp = mlp; 19271558Srgrimes mlpp = &mlp->ml_next; 19281558Srgrimes } 19291558Srgrimes fclose(mlfile); 19301558Srgrimes} 19311558Srgrimes 19321558Srgrimesvoid 19331558Srgrimesdel_mlist(hostp, dirp) 19341558Srgrimes char *hostp, *dirp; 19351558Srgrimes{ 19361558Srgrimes struct mountlist *mlp, **mlpp; 19371558Srgrimes struct mountlist *mlp2; 19381558Srgrimes FILE *mlfile; 19391558Srgrimes int fnd = 0; 19401558Srgrimes 19411558Srgrimes mlpp = &mlhead; 19421558Srgrimes mlp = mlhead; 19431558Srgrimes while (mlp) { 19441558Srgrimes if (!strcmp(mlp->ml_host, hostp) && 19451558Srgrimes (!dirp || !strcmp(mlp->ml_dirp, dirp))) { 19461558Srgrimes fnd = 1; 19471558Srgrimes mlp2 = mlp; 19481558Srgrimes *mlpp = mlp = mlp->ml_next; 19491558Srgrimes free((caddr_t)mlp2); 19501558Srgrimes } else { 19511558Srgrimes mlpp = &mlp->ml_next; 19521558Srgrimes mlp = mlp->ml_next; 19531558Srgrimes } 19541558Srgrimes } 19551558Srgrimes if (fnd) { 19561558Srgrimes if ((mlfile = fopen(_PATH_RMOUNTLIST, "w")) == NULL) { 19571558Srgrimes syslog(LOG_ERR,"Can't update %s", _PATH_RMOUNTLIST); 19581558Srgrimes return; 19591558Srgrimes } 19601558Srgrimes mlp = mlhead; 19611558Srgrimes while (mlp) { 19621558Srgrimes fprintf(mlfile, "%s %s\n", mlp->ml_host, mlp->ml_dirp); 19631558Srgrimes mlp = mlp->ml_next; 19641558Srgrimes } 19651558Srgrimes fclose(mlfile); 19661558Srgrimes } 19671558Srgrimes} 19681558Srgrimes 19691558Srgrimesvoid 19701558Srgrimesadd_mlist(hostp, dirp) 19711558Srgrimes char *hostp, *dirp; 19721558Srgrimes{ 19731558Srgrimes struct mountlist *mlp, **mlpp; 19741558Srgrimes FILE *mlfile; 19751558Srgrimes 19761558Srgrimes mlpp = &mlhead; 19771558Srgrimes mlp = mlhead; 19781558Srgrimes while (mlp) { 19791558Srgrimes if (!strcmp(mlp->ml_host, hostp) && !strcmp(mlp->ml_dirp, dirp)) 19801558Srgrimes return; 19811558Srgrimes mlpp = &mlp->ml_next; 19821558Srgrimes mlp = mlp->ml_next; 19831558Srgrimes } 19841558Srgrimes mlp = (struct mountlist *)malloc(sizeof (*mlp)); 19851558Srgrimes strncpy(mlp->ml_host, hostp, RPCMNT_NAMELEN); 19861558Srgrimes mlp->ml_host[RPCMNT_NAMELEN] = '\0'; 19871558Srgrimes strncpy(mlp->ml_dirp, dirp, RPCMNT_PATHLEN); 19881558Srgrimes mlp->ml_dirp[RPCMNT_PATHLEN] = '\0'; 19891558Srgrimes mlp->ml_next = (struct mountlist *)NULL; 19901558Srgrimes *mlpp = mlp; 19911558Srgrimes if ((mlfile = fopen(_PATH_RMOUNTLIST, "a")) == NULL) { 19921558Srgrimes syslog(LOG_ERR, "Can't update %s", _PATH_RMOUNTLIST); 19931558Srgrimes return; 19941558Srgrimes } 19951558Srgrimes fprintf(mlfile, "%s %s\n", mlp->ml_host, mlp->ml_dirp); 19961558Srgrimes fclose(mlfile); 19971558Srgrimes} 19981558Srgrimes 19991558Srgrimes/* 20001558Srgrimes * This function is called via. SIGTERM when the system is going down. 20011558Srgrimes * It sends a broadcast RPCMNT_UMNTALL. 20021558Srgrimes */ 20031558Srgrimesvoid 20041558Srgrimessend_umntall() 20051558Srgrimes{ 20061558Srgrimes (void) clnt_broadcast(RPCPROG_MNT, RPCMNT_VER1, RPCMNT_UMNTALL, 20071558Srgrimes xdr_void, (caddr_t)0, xdr_void, (caddr_t)0, umntall_each); 20081558Srgrimes exit(0); 20091558Srgrimes} 20101558Srgrimes 20111558Srgrimesint 20121558Srgrimesumntall_each(resultsp, raddr) 20131558Srgrimes caddr_t resultsp; 20141558Srgrimes struct sockaddr_in *raddr; 20151558Srgrimes{ 20161558Srgrimes return (1); 20171558Srgrimes} 20181558Srgrimes 20191558Srgrimes/* 20201558Srgrimes * Free up a group list. 20211558Srgrimes */ 20221558Srgrimesvoid 20231558Srgrimesfree_grp(grp) 20241558Srgrimes struct grouplist *grp; 20251558Srgrimes{ 20261558Srgrimes char **addrp; 20271558Srgrimes 20281558Srgrimes if (grp->gr_type == GT_HOST) { 20291558Srgrimes if (grp->gr_ptr.gt_hostent->h_name) { 20301558Srgrimes addrp = grp->gr_ptr.gt_hostent->h_addr_list; 20311558Srgrimes while (addrp && *addrp) 20321558Srgrimes free(*addrp++); 20331558Srgrimes free((caddr_t)grp->gr_ptr.gt_hostent->h_addr_list); 20341558Srgrimes free(grp->gr_ptr.gt_hostent->h_name); 20351558Srgrimes } 20361558Srgrimes free((caddr_t)grp->gr_ptr.gt_hostent); 20371558Srgrimes } else if (grp->gr_type == GT_NET) { 20381558Srgrimes if (grp->gr_ptr.gt_net.nt_name) 20391558Srgrimes free(grp->gr_ptr.gt_net.nt_name); 20401558Srgrimes } 20411558Srgrimes#ifdef ISO 20421558Srgrimes else if (grp->gr_type == GT_ISO) 20431558Srgrimes free((caddr_t)grp->gr_ptr.gt_isoaddr); 20441558Srgrimes#endif 20451558Srgrimes free((caddr_t)grp); 20461558Srgrimes} 20471558Srgrimes 20481558Srgrimes#ifdef DEBUG 20491558Srgrimesvoid 20501558SrgrimesSYSLOG(int pri, const char *fmt, ...) 20511558Srgrimes{ 20521558Srgrimes va_list ap; 20531558Srgrimes 20541558Srgrimes va_start(ap, fmt); 20551558Srgrimes vfprintf(stderr, fmt, ap); 20561558Srgrimes va_end(ap); 20571558Srgrimes} 20581558Srgrimes#endif /* DEBUG */ 20591558Srgrimes 20601558Srgrimes/* 20611558Srgrimes * Check options for consistency. 20621558Srgrimes */ 20631558Srgrimesint 20641558Srgrimescheck_options(dp) 20651558Srgrimes struct dirlist *dp; 20661558Srgrimes{ 20671558Srgrimes 20681558Srgrimes if (dp == (struct dirlist *)NULL) 20691558Srgrimes return (1); 20701558Srgrimes if ((opt_flags & (OP_MAPROOT | OP_MAPALL)) == (OP_MAPROOT | OP_MAPALL) || 20711558Srgrimes (opt_flags & (OP_MAPROOT | OP_KERB)) == (OP_MAPROOT | OP_KERB) || 20721558Srgrimes (opt_flags & (OP_MAPALL | OP_KERB)) == (OP_MAPALL | OP_KERB)) { 20731558Srgrimes syslog(LOG_ERR, "-mapall, -maproot and -kerb mutually exclusive"); 20741558Srgrimes return (1); 20751558Srgrimes } 20761558Srgrimes if ((opt_flags & OP_MASK) && (opt_flags & OP_NET) == 0) { 20771558Srgrimes syslog(LOG_ERR, "-mask requires -net"); 20781558Srgrimes return (1); 20791558Srgrimes } 20801558Srgrimes if ((opt_flags & (OP_NET | OP_ISO)) == (OP_NET | OP_ISO)) { 20811558Srgrimes syslog(LOG_ERR, "-net and -iso mutually exclusive"); 20821558Srgrimes return (1); 20831558Srgrimes } 20841558Srgrimes if ((opt_flags & OP_ALLDIRS) && dp->dp_left) { 20851558Srgrimes syslog(LOG_ERR, "-alldir has multiple directories"); 20861558Srgrimes return (1); 20871558Srgrimes } 20881558Srgrimes return (0); 20891558Srgrimes} 20901558Srgrimes 20911558Srgrimes/* 20921558Srgrimes * Check an absolute directory path for any symbolic links. Return true 20931558Srgrimes * if no symbolic links are found. 20941558Srgrimes */ 20951558Srgrimesint 20961558Srgrimescheck_dirpath(dirp) 20971558Srgrimes char *dirp; 20981558Srgrimes{ 20991558Srgrimes char *cp; 21001558Srgrimes int ret = 1; 21011558Srgrimes struct stat sb; 21021558Srgrimes 21031558Srgrimes cp = dirp + 1; 21041558Srgrimes while (*cp && ret) { 21051558Srgrimes if (*cp == '/') { 21061558Srgrimes *cp = '\0'; 21079336Sdfr if (lstat(dirp, &sb) < 0 || !S_ISDIR(sb.st_mode)) 21081558Srgrimes ret = 0; 21091558Srgrimes *cp = '/'; 21101558Srgrimes } 21111558Srgrimes cp++; 21121558Srgrimes } 21139336Sdfr if (lstat(dirp, &sb) < 0 || !S_ISDIR(sb.st_mode)) 21141558Srgrimes ret = 0; 21151558Srgrimes return (ret); 21161558Srgrimes} 21179336Sdfr 21189336Sdfr/* 21199336Sdfr * Just translate an ascii string to an integer. 21209336Sdfr */ 21219336Sdfrint 21229336Sdfrget_num(cp) 21239336Sdfr register char *cp; 21249336Sdfr{ 21259336Sdfr register int res = 0; 21269336Sdfr 21279336Sdfr while (*cp) { 21289336Sdfr if (*cp < '0' || *cp > '9') 21299336Sdfr return (-1); 21309336Sdfr res = res * 10 + (*cp++ - '0'); 21319336Sdfr } 21329336Sdfr return (res); 21339336Sdfr} 2134