mountd.c revision 31656
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[] = 4631656Sguido "$Id: mountd.c,v 1.24 1997/09/12 16:25:24 jlemon 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; 11827447Sdfr char *ex_indexfile; 1191558Srgrimes}; 1201558Srgrimes/* ex_flag bits */ 1211558Srgrimes#define EX_LINKED 0x1 1221558Srgrimes 1231558Srgrimesstruct netmsk { 1241558Srgrimes u_long nt_net; 1251558Srgrimes u_long nt_mask; 1261558Srgrimes char *nt_name; 1271558Srgrimes}; 1281558Srgrimes 1291558Srgrimesunion grouptypes { 1301558Srgrimes struct hostent *gt_hostent; 1311558Srgrimes struct netmsk gt_net; 1321558Srgrimes#ifdef ISO 1331558Srgrimes struct sockaddr_iso *gt_isoaddr; 1341558Srgrimes#endif 1351558Srgrimes}; 1361558Srgrimes 1371558Srgrimesstruct grouplist { 1381558Srgrimes int gr_type; 1391558Srgrimes union grouptypes gr_ptr; 1401558Srgrimes struct grouplist *gr_next; 1411558Srgrimes}; 1421558Srgrimes/* Group types */ 1431558Srgrimes#define GT_NULL 0x0 1441558Srgrimes#define GT_HOST 0x1 1451558Srgrimes#define GT_NET 0x2 1461558Srgrimes#define GT_ISO 0x4 1477401Swpaul#define GT_IGNORE 0x5 1481558Srgrimes 1491558Srgrimesstruct hostlist { 1509336Sdfr int ht_flag; /* Uses DP_xx bits */ 1511558Srgrimes struct grouplist *ht_grp; 1521558Srgrimes struct hostlist *ht_next; 1531558Srgrimes}; 1541558Srgrimes 1559336Sdfrstruct fhreturn { 1569336Sdfr int fhr_flag; 1579336Sdfr int fhr_vers; 1589336Sdfr nfsfh_t fhr_fh; 1599336Sdfr}; 1609336Sdfr 1611558Srgrimes/* Global defs */ 1621558Srgrimeschar *add_expdir __P((struct dirlist **, char *, int)); 1631558Srgrimesvoid add_dlist __P((struct dirlist **, struct dirlist *, 1649336Sdfr struct grouplist *, int)); 1651558Srgrimesvoid add_mlist __P((char *, char *)); 1661558Srgrimesint check_dirpath __P((char *)); 1671558Srgrimesint check_options __P((struct dirlist *)); 1689336Sdfrint chk_host __P((struct dirlist *, u_long, int *, int *)); 1691558Srgrimesvoid del_mlist __P((char *, char *)); 1701558Srgrimesstruct dirlist *dirp_search __P((struct dirlist *, char *)); 1711558Srgrimesint do_mount __P((struct exportlist *, struct grouplist *, int, 1729336Sdfr struct ucred *, char *, int, struct statfs *)); 1731558Srgrimesint do_opt __P((char **, char **, struct exportlist *, struct grouplist *, 1741558Srgrimes int *, int *, struct ucred *)); 1751558Srgrimesstruct exportlist *ex_search __P((fsid_t *)); 1761558Srgrimesstruct exportlist *get_exp __P((void)); 1771558Srgrimesvoid free_dir __P((struct dirlist *)); 1781558Srgrimesvoid free_exp __P((struct exportlist *)); 1791558Srgrimesvoid free_grp __P((struct grouplist *)); 1801558Srgrimesvoid free_host __P((struct hostlist *)); 1811558Srgrimesvoid get_exportlist __P((void)); 1827401Swpaulint get_host __P((char *, struct grouplist *, struct grouplist *)); 1839336Sdfrint get_num __P((char *)); 1841558Srgrimesstruct hostlist *get_ht __P((void)); 1851558Srgrimesint get_line __P((void)); 1861558Srgrimesvoid get_mountlist __P((void)); 1871558Srgrimesint get_net __P((char *, struct netmsk *, int)); 1881558Srgrimesvoid getexp_err __P((struct exportlist *, struct grouplist *)); 1891558Srgrimesstruct grouplist *get_grp __P((void)); 1901558Srgrimesvoid hang_dirp __P((struct dirlist *, struct grouplist *, 1911558Srgrimes struct exportlist *, int)); 1921558Srgrimesvoid mntsrv __P((struct svc_req *, SVCXPRT *)); 1931558Srgrimesvoid nextfield __P((char **, char **)); 1941558Srgrimesvoid out_of_mem __P((void)); 1951558Srgrimesvoid parsecred __P((char *, struct ucred *)); 1961558Srgrimesint put_exlist __P((struct dirlist *, XDR *, struct dirlist *, int *)); 1971558Srgrimesint scan_tree __P((struct dirlist *, u_long)); 1981558Srgrimesvoid send_umntall __P((void)); 1991558Srgrimesint umntall_each __P((caddr_t, struct sockaddr_in *)); 2001558Srgrimesint xdr_dir __P((XDR *, char *)); 2011558Srgrimesint xdr_explist __P((XDR *, caddr_t)); 2029336Sdfrint xdr_fhs __P((XDR *, caddr_t)); 2031558Srgrimesint xdr_mlist __P((XDR *, caddr_t)); 2041558Srgrimes 2051558Srgrimes/* C library */ 2061558Srgrimesint getnetgrent(); 2071558Srgrimesvoid endnetgrent(); 2081558Srgrimesvoid setnetgrent(); 2091558Srgrimes 2101558Srgrimes#ifdef ISO 2111558Srgrimesstruct iso_addr *iso_addr(); 2121558Srgrimes#endif 2131558Srgrimes 2141558Srgrimesstruct exportlist *exphead; 2151558Srgrimesstruct mountlist *mlhead; 2161558Srgrimesstruct grouplist *grphead; 2171558Srgrimeschar exname[MAXPATHLEN]; 2181558Srgrimesstruct ucred def_anon = { 2191558Srgrimes 1, 2201558Srgrimes (uid_t) -2, 2211558Srgrimes 1, 2221558Srgrimes { (gid_t) -2 } 2231558Srgrimes}; 22425087Sdfrint force_v2 = 0; 2259336Sdfrint resvport_only = 1; 2269336Sdfrint dir_only = 1; 22731656Sguidoint log = 1; 2281558Srgrimesint opt_flags; 2291558Srgrimes/* Bits for above */ 2301558Srgrimes#define OP_MAPROOT 0x01 2311558Srgrimes#define OP_MAPALL 0x02 2321558Srgrimes#define OP_KERB 0x04 2331558Srgrimes#define OP_MASK 0x08 2341558Srgrimes#define OP_NET 0x10 2351558Srgrimes#define OP_ISO 0x20 2361558Srgrimes#define OP_ALLDIRS 0x40 2371558Srgrimes 2381558Srgrimes#ifdef DEBUG 2391558Srgrimesint debug = 1; 2401558Srgrimesvoid SYSLOG __P((int, const char *, ...)); 2411558Srgrimes#define syslog SYSLOG 2421558Srgrimes#else 2431558Srgrimesint debug = 0; 2441558Srgrimes#endif 2451558Srgrimes 2461558Srgrimes/* 2471558Srgrimes * Mountd server for NFS mount protocol as described in: 2481558Srgrimes * NFS: Network File System Protocol Specification, RFC1094, Appendix A 2491558Srgrimes * The optional arguments are the exports file name 2501558Srgrimes * default: _PATH_EXPORTS 2511558Srgrimes * and "-n" to allow nonroot mount. 2521558Srgrimes */ 2531558Srgrimesint 2541558Srgrimesmain(argc, argv) 2551558Srgrimes int argc; 2561558Srgrimes char **argv; 2571558Srgrimes{ 2589202Srgrimes SVCXPRT *udptransp, *tcptransp; 2591558Srgrimes int c; 26024489Sbde int mib[3]; 2619336Sdfr#ifdef __FreeBSD__ 26223681Speter struct vfsconf vfc; 26323681Speter int error; 2641558Srgrimes 26523681Speter error = getvfsbyname("nfs", &vfc); 26623681Speter if (error && vfsisloadable("nfs")) { 2672999Swollman if(vfsload("nfs")) 2682999Swollman err(1, "vfsload(nfs)"); 2692999Swollman endvfsent(); /* flush cache */ 27023681Speter error = getvfsbyname("nfs", &vfc); 2712999Swollman } 27223681Speter if (error) 2732999Swollman errx(1, "NFS support is not available in the running kernel"); 2749336Sdfr#endif /* __FreeBSD__ */ 2752999Swollman 27631656Sguido while ((c = getopt(argc, argv, "2dnrl")) != -1) 2771558Srgrimes switch (c) { 27825087Sdfr case '2': 27925087Sdfr force_v2 = 1; 28025087Sdfr break; 2819336Sdfr case 'n': 2829336Sdfr resvport_only = 0; 2839336Sdfr break; 2849336Sdfr case 'r': 2859336Sdfr dir_only = 0; 2869336Sdfr break; 2878688Sphk case 'd': 2888688Sphk debug = debug ? 0 : 1; 2898688Sphk break; 29031656Sguido case 'l': 29131656Sguido log = 1; 29231656Sguido break; 2931558Srgrimes default: 29431656Sguido fprintf(stderr, "Usage: mountd [-d] [-r] [-n] [-l] [export_file]\n"); 2951558Srgrimes exit(1); 2961558Srgrimes }; 2971558Srgrimes argc -= optind; 2981558Srgrimes argv += optind; 2991558Srgrimes grphead = (struct grouplist *)NULL; 3001558Srgrimes exphead = (struct exportlist *)NULL; 3011558Srgrimes mlhead = (struct mountlist *)NULL; 3021558Srgrimes if (argc == 1) { 3031558Srgrimes strncpy(exname, *argv, MAXPATHLEN-1); 3041558Srgrimes exname[MAXPATHLEN-1] = '\0'; 3051558Srgrimes } else 3061558Srgrimes strcpy(exname, _PATH_EXPORTS); 3071558Srgrimes openlog("mountd", LOG_PID, LOG_DAEMON); 3081558Srgrimes if (debug) 3091558Srgrimes fprintf(stderr,"Getting export list.\n"); 3101558Srgrimes get_exportlist(); 3111558Srgrimes if (debug) 3121558Srgrimes fprintf(stderr,"Getting mount list.\n"); 3131558Srgrimes get_mountlist(); 3141558Srgrimes if (debug) 3151558Srgrimes fprintf(stderr,"Here we go.\n"); 3161558Srgrimes if (debug == 0) { 3171558Srgrimes daemon(0, 0); 3181558Srgrimes signal(SIGINT, SIG_IGN); 3191558Srgrimes signal(SIGQUIT, SIG_IGN); 3201558Srgrimes } 3211558Srgrimes signal(SIGHUP, (void (*) __P((int))) get_exportlist); 3221558Srgrimes signal(SIGTERM, (void (*) __P((int))) send_umntall); 3231558Srgrimes { FILE *pidfile = fopen(_PATH_MOUNTDPID, "w"); 3241558Srgrimes if (pidfile != NULL) { 3251558Srgrimes fprintf(pidfile, "%d\n", getpid()); 3261558Srgrimes fclose(pidfile); 3271558Srgrimes } 3281558Srgrimes } 32924330Sguido 33024759Sguido if (!resvport_only) { 33124759Sguido mib[0] = CTL_VFS; 33224759Sguido mib[1] = MOUNT_NFS; 33324759Sguido mib[2] = NFS_NFSPRIVPORT; 33424759Sguido if (sysctl(mib, 3, NULL, NULL, &resvport_only, 33524759Sguido sizeof(resvport_only)) != 0 && errno != ENOENT) { 33624759Sguido syslog(LOG_ERR, "sysctl: %m"); 33724759Sguido exit(1); 33824759Sguido } 33924330Sguido } 34024330Sguido 3419202Srgrimes if ((udptransp = svcudp_create(RPC_ANYSOCK)) == NULL || 3429202Srgrimes (tcptransp = svctcp_create(RPC_ANYSOCK, 0, 0)) == NULL) { 3431558Srgrimes syslog(LOG_ERR, "Can't create socket"); 3441558Srgrimes exit(1); 3451558Srgrimes } 3469336Sdfr pmap_unset(RPCPROG_MNT, 1); 3479336Sdfr pmap_unset(RPCPROG_MNT, 3); 34825087Sdfr if (!force_v2) 34925087Sdfr if (!svc_register(udptransp, RPCPROG_MNT, 3, mntsrv, IPPROTO_UDP) || 35025087Sdfr !svc_register(tcptransp, RPCPROG_MNT, 3, mntsrv, IPPROTO_TCP)) { 35125087Sdfr syslog(LOG_ERR, "Can't register mount"); 35225087Sdfr exit(1); 35325087Sdfr } 3549336Sdfr if (!svc_register(udptransp, RPCPROG_MNT, 1, mntsrv, IPPROTO_UDP) || 35525087Sdfr !svc_register(tcptransp, RPCPROG_MNT, 1, mntsrv, IPPROTO_TCP)) { 3561558Srgrimes syslog(LOG_ERR, "Can't register mount"); 3571558Srgrimes exit(1); 3581558Srgrimes } 3591558Srgrimes svc_run(); 3601558Srgrimes syslog(LOG_ERR, "Mountd died"); 3611558Srgrimes exit(1); 3621558Srgrimes} 3631558Srgrimes 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; 3791558Srgrimes u_long 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)) 3941558Srgrimes 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, 42331656Sguido "mount request from %s for non existant path %s", 42431656Sguido inet_ntoa(saddrin), dirpath); 4251558Srgrimes if (debug) 4261558Srgrimes fprintf(stderr, "stat failed on %s\n", 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)) 44228911Sguido 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; 4551558Srgrimes syslog(LOG_ERR, "Can't get fh for %s", dirpath); 4561558Srgrimes if (!svc_sendreply(transp, xdr_long, 4571558Srgrimes (caddr_t)&bad)) 4581558Srgrimes 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)) 4631558Srgrimes 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) 4731558Srgrimes fprintf(stderr,"Mount successfull.\n"); 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)) 48628911Sguido 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)) 4911558Srgrimes syslog(LOG_ERR, "Can't send reply"); 49231656Sguido else if (log) 49331656Sguido syslog(LOG_NOTICE, 49431656Sguido "dump request succeeded from %s", 49531656Sguido inet_ntoa(saddrin), dirpath); 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)) 5121558Srgrimes 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)) 5311558Srgrimes 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)) 5431558Srgrimes 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) 7911558Srgrimes 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) { 8021558Srgrimes syslog(LOG_ERR, "Can't open %s", exname); 8031558Srgrimes exit(2); 8041558Srgrimes } 8051558Srgrimes dirhead = (struct dirlist *)NULL; 8061558Srgrimes while (get_line()) { 8071558Srgrimes if (debug) 8081558Srgrimes fprintf(stderr,"Got line %s\n",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) 8401558Srgrimes fprintf(stderr, "doing opt %s\n", 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) { 8531558Srgrimes 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) 8801558Srgrimes fprintf(stderr, 8811558Srgrimes "Making new ep fs=0x%x,0x%x\n", 8821558Srgrimes fsb.f_fsid.val[0], 8831558Srgrimes fsb.f_fsid.val[1]); 8841558Srgrimes } else if (debug) 8851558Srgrimes fprintf(stderr, 8861558Srgrimes "Found ep fs=0x%x,0x%x\n", 8871558Srgrimes fsb.f_fsid.val[0], 8881558Srgrimes fsb.f_fsid.val[1]); 8891558Srgrimes } 8901558Srgrimes 8911558Srgrimes /* 8921558Srgrimes * Add dirpath to export mount point. 8931558Srgrimes */ 8941558Srgrimes dirp = add_expdir(&dirhead, cp, len); 8951558Srgrimes dirplen = len; 8961558Srgrimes } else { 8971558Srgrimes getexp_err(ep, tgrp); 8981558Srgrimes goto nextline; 8991558Srgrimes } 9001558Srgrimes *endcp = savedc; 9011558Srgrimes } else { 9021558Srgrimes savedc = *endcp; 9031558Srgrimes *endcp = '\0'; 9041558Srgrimes got_nondir = 1; 9051558Srgrimes if (ep == (struct exportlist *)NULL) { 9061558Srgrimes getexp_err(ep, tgrp); 9071558Srgrimes goto nextline; 9081558Srgrimes } 9091558Srgrimes 9101558Srgrimes /* 9111558Srgrimes * Get the host or netgroup. 9121558Srgrimes */ 9131558Srgrimes setnetgrent(cp); 9141558Srgrimes netgrp = getnetgrent(&hst, &usr, &dom); 9151558Srgrimes do { 9161558Srgrimes if (has_host) { 9171558Srgrimes grp->gr_next = get_grp(); 9181558Srgrimes grp = grp->gr_next; 9191558Srgrimes } 9201558Srgrimes if (netgrp) { 9217401Swpaul if (get_host(hst, grp, tgrp)) { 92229317Sjlemon syslog(LOG_ERR, "Bad host %s in netgroup %s, skipping", hst, cp); 92329317Sjlemon grp->gr_type = GT_IGNORE; 9241558Srgrimes } 9257401Swpaul } else if (get_host(cp, grp, tgrp)) { 92629317Sjlemon syslog(LOG_ERR, "Bad host %s, skipping", cp); 92729317Sjlemon grp->gr_type = GT_IGNORE; 9281558Srgrimes } 9291558Srgrimes has_host = TRUE; 9301558Srgrimes } while (netgrp && getnetgrent(&hst, &usr, &dom)); 9311558Srgrimes endnetgrent(); 9321558Srgrimes *endcp = savedc; 9331558Srgrimes } 9341558Srgrimes cp = endcp; 9351558Srgrimes nextfield(&cp, &endcp); 9361558Srgrimes len = endcp - cp; 9371558Srgrimes } 9381558Srgrimes if (check_options(dirhead)) { 9391558Srgrimes getexp_err(ep, tgrp); 9401558Srgrimes goto nextline; 9411558Srgrimes } 9421558Srgrimes if (!has_host) { 9431558Srgrimes grp->gr_type = GT_HOST; 9441558Srgrimes if (debug) 9451558Srgrimes fprintf(stderr,"Adding a default entry\n"); 9461558Srgrimes /* add a default group and make the grp list NULL */ 9471558Srgrimes hpe = (struct hostent *)malloc(sizeof(struct hostent)); 9481558Srgrimes if (hpe == (struct hostent *)NULL) 9491558Srgrimes out_of_mem(); 95012348Sjoerg hpe->h_name = strdup("Default"); 9511558Srgrimes hpe->h_addrtype = AF_INET; 9521558Srgrimes hpe->h_length = sizeof (u_long); 9531558Srgrimes hpe->h_addr_list = (char **)NULL; 9541558Srgrimes grp->gr_ptr.gt_hostent = hpe; 9551558Srgrimes 9561558Srgrimes /* 9571558Srgrimes * Don't allow a network export coincide with a list of 9581558Srgrimes * host(s) on the same line. 9591558Srgrimes */ 9601558Srgrimes } else if ((opt_flags & OP_NET) && tgrp->gr_next) { 9611558Srgrimes getexp_err(ep, tgrp); 9621558Srgrimes goto nextline; 96329317Sjlemon 96429317Sjlemon /* 96529317Sjlemon * If an export list was specified on this line, make sure 96629317Sjlemon * that we have at least one valid entry, otherwise skip it. 96729317Sjlemon */ 96829317Sjlemon } else { 96929317Sjlemon grp = tgrp; 97029317Sjlemon while (grp && grp->gr_type == GT_IGNORE) 97129317Sjlemon grp = grp->gr_next; 97229317Sjlemon if (! grp) { 97329317Sjlemon getexp_err(ep, tgrp); 97429317Sjlemon goto nextline; 97529317Sjlemon } 9761558Srgrimes } 9771558Srgrimes 9781558Srgrimes /* 9791558Srgrimes * Loop through hosts, pushing the exports into the kernel. 9801558Srgrimes * After loop, tgrp points to the start of the list and 9811558Srgrimes * grp points to the last entry in the list. 9821558Srgrimes */ 9831558Srgrimes grp = tgrp; 9841558Srgrimes do { 9851558Srgrimes if (do_mount(ep, grp, exflags, &anon, dirp, 9861558Srgrimes dirplen, &fsb)) { 9871558Srgrimes getexp_err(ep, tgrp); 9881558Srgrimes goto nextline; 9891558Srgrimes } 9901558Srgrimes } while (grp->gr_next && (grp = grp->gr_next)); 9911558Srgrimes 9921558Srgrimes /* 9931558Srgrimes * Success. Update the data structures. 9941558Srgrimes */ 9951558Srgrimes if (has_host) { 9969336Sdfr hang_dirp(dirhead, tgrp, ep, opt_flags); 9971558Srgrimes grp->gr_next = grphead; 9981558Srgrimes grphead = tgrp; 9991558Srgrimes } else { 10001558Srgrimes hang_dirp(dirhead, (struct grouplist *)NULL, ep, 10019336Sdfr opt_flags); 10021558Srgrimes free_grp(grp); 10031558Srgrimes } 10041558Srgrimes dirhead = (struct dirlist *)NULL; 10051558Srgrimes if ((ep->ex_flag & EX_LINKED) == 0) { 10061558Srgrimes ep2 = exphead; 10071558Srgrimes epp = &exphead; 10081558Srgrimes 10091558Srgrimes /* 10101558Srgrimes * Insert in the list in alphabetical order. 10111558Srgrimes */ 10121558Srgrimes while (ep2 && strcmp(ep2->ex_fsdir, ep->ex_fsdir) < 0) { 10131558Srgrimes epp = &ep2->ex_next; 10141558Srgrimes ep2 = ep2->ex_next; 10151558Srgrimes } 10161558Srgrimes if (ep2) 10171558Srgrimes ep->ex_next = ep2; 10181558Srgrimes *epp = ep; 10191558Srgrimes ep->ex_flag |= EX_LINKED; 10201558Srgrimes } 10211558Srgrimesnextline: 10221558Srgrimes if (dirhead) { 10231558Srgrimes free_dir(dirhead); 10241558Srgrimes dirhead = (struct dirlist *)NULL; 10251558Srgrimes } 10261558Srgrimes } 10271558Srgrimes fclose(exp_file); 10281558Srgrimes} 10291558Srgrimes 10301558Srgrimes/* 10311558Srgrimes * Allocate an export list element 10321558Srgrimes */ 10331558Srgrimesstruct exportlist * 10341558Srgrimesget_exp() 10351558Srgrimes{ 10361558Srgrimes struct exportlist *ep; 10371558Srgrimes 10381558Srgrimes ep = (struct exportlist *)malloc(sizeof (struct exportlist)); 10391558Srgrimes if (ep == (struct exportlist *)NULL) 10401558Srgrimes out_of_mem(); 104123681Speter memset(ep, 0, sizeof(struct exportlist)); 10421558Srgrimes return (ep); 10431558Srgrimes} 10441558Srgrimes 10451558Srgrimes/* 10461558Srgrimes * Allocate a group list element 10471558Srgrimes */ 10481558Srgrimesstruct grouplist * 10491558Srgrimesget_grp() 10501558Srgrimes{ 10511558Srgrimes struct grouplist *gp; 10521558Srgrimes 10531558Srgrimes gp = (struct grouplist *)malloc(sizeof (struct grouplist)); 10541558Srgrimes if (gp == (struct grouplist *)NULL) 10551558Srgrimes out_of_mem(); 105623681Speter memset(gp, 0, sizeof(struct grouplist)); 10571558Srgrimes return (gp); 10581558Srgrimes} 10591558Srgrimes 10601558Srgrimes/* 10611558Srgrimes * Clean up upon an error in get_exportlist(). 10621558Srgrimes */ 10631558Srgrimesvoid 10641558Srgrimesgetexp_err(ep, grp) 10651558Srgrimes struct exportlist *ep; 10661558Srgrimes struct grouplist *grp; 10671558Srgrimes{ 10681558Srgrimes struct grouplist *tgrp; 10691558Srgrimes 10701558Srgrimes syslog(LOG_ERR, "Bad exports list line %s", line); 10711558Srgrimes if (ep && (ep->ex_flag & EX_LINKED) == 0) 10721558Srgrimes free_exp(ep); 10731558Srgrimes while (grp) { 10741558Srgrimes tgrp = grp; 10751558Srgrimes grp = grp->gr_next; 10761558Srgrimes free_grp(tgrp); 10771558Srgrimes } 10781558Srgrimes} 10791558Srgrimes 10801558Srgrimes/* 10811558Srgrimes * Search the export list for a matching fs. 10821558Srgrimes */ 10831558Srgrimesstruct exportlist * 10841558Srgrimesex_search(fsid) 10851558Srgrimes fsid_t *fsid; 10861558Srgrimes{ 10871558Srgrimes struct exportlist *ep; 10881558Srgrimes 10891558Srgrimes ep = exphead; 10901558Srgrimes while (ep) { 10911558Srgrimes if (ep->ex_fs.val[0] == fsid->val[0] && 10921558Srgrimes ep->ex_fs.val[1] == fsid->val[1]) 10931558Srgrimes return (ep); 10941558Srgrimes ep = ep->ex_next; 10951558Srgrimes } 10961558Srgrimes return (ep); 10971558Srgrimes} 10981558Srgrimes 10991558Srgrimes/* 11001558Srgrimes * Add a directory path to the list. 11011558Srgrimes */ 11021558Srgrimeschar * 11031558Srgrimesadd_expdir(dpp, cp, len) 11041558Srgrimes struct dirlist **dpp; 11051558Srgrimes char *cp; 11061558Srgrimes int len; 11071558Srgrimes{ 11081558Srgrimes struct dirlist *dp; 11091558Srgrimes 11101558Srgrimes dp = (struct dirlist *)malloc(sizeof (struct dirlist) + len); 11111558Srgrimes dp->dp_left = *dpp; 11121558Srgrimes dp->dp_right = (struct dirlist *)NULL; 11131558Srgrimes dp->dp_flag = 0; 11141558Srgrimes dp->dp_hosts = (struct hostlist *)NULL; 11151558Srgrimes strcpy(dp->dp_dirp, cp); 11161558Srgrimes *dpp = dp; 11171558Srgrimes return (dp->dp_dirp); 11181558Srgrimes} 11191558Srgrimes 11201558Srgrimes/* 11211558Srgrimes * Hang the dir list element off the dirpath binary tree as required 11221558Srgrimes * and update the entry for host. 11231558Srgrimes */ 11241558Srgrimesvoid 11259336Sdfrhang_dirp(dp, grp, ep, flags) 11261558Srgrimes struct dirlist *dp; 11271558Srgrimes struct grouplist *grp; 11281558Srgrimes struct exportlist *ep; 11299336Sdfr int flags; 11301558Srgrimes{ 11311558Srgrimes struct hostlist *hp; 11321558Srgrimes struct dirlist *dp2; 11331558Srgrimes 11349336Sdfr if (flags & OP_ALLDIRS) { 11351558Srgrimes if (ep->ex_defdir) 11361558Srgrimes free((caddr_t)dp); 11371558Srgrimes else 11381558Srgrimes ep->ex_defdir = dp; 11399336Sdfr if (grp == (struct grouplist *)NULL) { 11401558Srgrimes ep->ex_defdir->dp_flag |= DP_DEFSET; 11419336Sdfr if (flags & OP_KERB) 11429336Sdfr ep->ex_defdir->dp_flag |= DP_KERB; 11439336Sdfr } else while (grp) { 11441558Srgrimes hp = get_ht(); 11459336Sdfr if (flags & OP_KERB) 11469336Sdfr hp->ht_flag |= DP_KERB; 11471558Srgrimes hp->ht_grp = grp; 11481558Srgrimes hp->ht_next = ep->ex_defdir->dp_hosts; 11491558Srgrimes ep->ex_defdir->dp_hosts = hp; 11501558Srgrimes grp = grp->gr_next; 11511558Srgrimes } 11521558Srgrimes } else { 11531558Srgrimes 11541558Srgrimes /* 11551558Srgrimes * Loop throught the directories adding them to the tree. 11561558Srgrimes */ 11571558Srgrimes while (dp) { 11581558Srgrimes dp2 = dp->dp_left; 11599336Sdfr add_dlist(&ep->ex_dirl, dp, grp, flags); 11601558Srgrimes dp = dp2; 11611558Srgrimes } 11621558Srgrimes } 11631558Srgrimes} 11641558Srgrimes 11651558Srgrimes/* 11661558Srgrimes * Traverse the binary tree either updating a node that is already there 11671558Srgrimes * for the new directory or adding the new node. 11681558Srgrimes */ 11691558Srgrimesvoid 11709336Sdfradd_dlist(dpp, newdp, grp, flags) 11711558Srgrimes struct dirlist **dpp; 11721558Srgrimes struct dirlist *newdp; 11731558Srgrimes struct grouplist *grp; 11749336Sdfr int flags; 11751558Srgrimes{ 11761558Srgrimes struct dirlist *dp; 11771558Srgrimes struct hostlist *hp; 11781558Srgrimes int cmp; 11791558Srgrimes 11801558Srgrimes dp = *dpp; 11811558Srgrimes if (dp) { 11821558Srgrimes cmp = strcmp(dp->dp_dirp, newdp->dp_dirp); 11831558Srgrimes if (cmp > 0) { 11849336Sdfr add_dlist(&dp->dp_left, newdp, grp, flags); 11851558Srgrimes return; 11861558Srgrimes } else if (cmp < 0) { 11879336Sdfr add_dlist(&dp->dp_right, newdp, grp, flags); 11881558Srgrimes return; 11891558Srgrimes } else 11901558Srgrimes free((caddr_t)newdp); 11911558Srgrimes } else { 11921558Srgrimes dp = newdp; 11931558Srgrimes dp->dp_left = (struct dirlist *)NULL; 11941558Srgrimes *dpp = dp; 11951558Srgrimes } 11961558Srgrimes if (grp) { 11971558Srgrimes 11981558Srgrimes /* 11991558Srgrimes * Hang all of the host(s) off of the directory point. 12001558Srgrimes */ 12011558Srgrimes do { 12021558Srgrimes hp = get_ht(); 12039336Sdfr if (flags & OP_KERB) 12049336Sdfr hp->ht_flag |= DP_KERB; 12051558Srgrimes hp->ht_grp = grp; 12061558Srgrimes hp->ht_next = dp->dp_hosts; 12071558Srgrimes dp->dp_hosts = hp; 12081558Srgrimes grp = grp->gr_next; 12091558Srgrimes } while (grp); 12109336Sdfr } else { 12111558Srgrimes dp->dp_flag |= DP_DEFSET; 12129336Sdfr if (flags & OP_KERB) 12139336Sdfr dp->dp_flag |= DP_KERB; 12149336Sdfr } 12151558Srgrimes} 12161558Srgrimes 12171558Srgrimes/* 12181558Srgrimes * Search for a dirpath on the export point. 12191558Srgrimes */ 12201558Srgrimesstruct dirlist * 12211558Srgrimesdirp_search(dp, dirpath) 12221558Srgrimes struct dirlist *dp; 12231558Srgrimes char *dirpath; 12241558Srgrimes{ 12251558Srgrimes int cmp; 12261558Srgrimes 12271558Srgrimes if (dp) { 12281558Srgrimes cmp = strcmp(dp->dp_dirp, dirpath); 12291558Srgrimes if (cmp > 0) 12301558Srgrimes return (dirp_search(dp->dp_left, dirpath)); 12311558Srgrimes else if (cmp < 0) 12321558Srgrimes return (dirp_search(dp->dp_right, dirpath)); 12331558Srgrimes else 12341558Srgrimes return (dp); 12351558Srgrimes } 12361558Srgrimes return (dp); 12371558Srgrimes} 12381558Srgrimes 12391558Srgrimes/* 12401558Srgrimes * Scan for a host match in a directory tree. 12411558Srgrimes */ 12421558Srgrimesint 12439336Sdfrchk_host(dp, saddr, defsetp, hostsetp) 12441558Srgrimes struct dirlist *dp; 12451558Srgrimes u_long saddr; 12461558Srgrimes int *defsetp; 12479336Sdfr int *hostsetp; 12481558Srgrimes{ 12491558Srgrimes struct hostlist *hp; 12501558Srgrimes struct grouplist *grp; 12511558Srgrimes u_long **addrp; 12521558Srgrimes 12531558Srgrimes if (dp) { 12541558Srgrimes if (dp->dp_flag & DP_DEFSET) 12559336Sdfr *defsetp = dp->dp_flag; 12561558Srgrimes hp = dp->dp_hosts; 12571558Srgrimes while (hp) { 12581558Srgrimes grp = hp->ht_grp; 12591558Srgrimes switch (grp->gr_type) { 12601558Srgrimes case GT_HOST: 12611558Srgrimes addrp = (u_long **) 12621558Srgrimes grp->gr_ptr.gt_hostent->h_addr_list; 12631558Srgrimes while (*addrp) { 12649336Sdfr if (**addrp == saddr) { 12659336Sdfr *hostsetp = (hp->ht_flag | DP_HOSTSET); 12661558Srgrimes return (1); 12679336Sdfr } 12681558Srgrimes addrp++; 12691558Srgrimes } 12701558Srgrimes break; 12711558Srgrimes case GT_NET: 12721558Srgrimes if ((saddr & grp->gr_ptr.gt_net.nt_mask) == 12739336Sdfr grp->gr_ptr.gt_net.nt_net) { 12749336Sdfr *hostsetp = (hp->ht_flag | DP_HOSTSET); 12751558Srgrimes return (1); 12769336Sdfr } 12771558Srgrimes break; 12781558Srgrimes }; 12791558Srgrimes hp = hp->ht_next; 12801558Srgrimes } 12811558Srgrimes } 12821558Srgrimes return (0); 12831558Srgrimes} 12841558Srgrimes 12851558Srgrimes/* 12861558Srgrimes * Scan tree for a host that matches the address. 12871558Srgrimes */ 12881558Srgrimesint 12891558Srgrimesscan_tree(dp, saddr) 12901558Srgrimes struct dirlist *dp; 12911558Srgrimes u_long saddr; 12921558Srgrimes{ 12939336Sdfr int defset, hostset; 12941558Srgrimes 12951558Srgrimes if (dp) { 12961558Srgrimes if (scan_tree(dp->dp_left, saddr)) 12971558Srgrimes return (1); 12989336Sdfr if (chk_host(dp, saddr, &defset, &hostset)) 12991558Srgrimes return (1); 13001558Srgrimes if (scan_tree(dp->dp_right, saddr)) 13011558Srgrimes return (1); 13021558Srgrimes } 13031558Srgrimes return (0); 13041558Srgrimes} 13051558Srgrimes 13061558Srgrimes/* 13071558Srgrimes * Traverse the dirlist tree and free it up. 13081558Srgrimes */ 13091558Srgrimesvoid 13101558Srgrimesfree_dir(dp) 13111558Srgrimes struct dirlist *dp; 13121558Srgrimes{ 13131558Srgrimes 13141558Srgrimes if (dp) { 13151558Srgrimes free_dir(dp->dp_left); 13161558Srgrimes free_dir(dp->dp_right); 13171558Srgrimes free_host(dp->dp_hosts); 13181558Srgrimes free((caddr_t)dp); 13191558Srgrimes } 13201558Srgrimes} 13211558Srgrimes 13221558Srgrimes/* 13231558Srgrimes * Parse the option string and update fields. 13241558Srgrimes * Option arguments may either be -<option>=<value> or 13251558Srgrimes * -<option> <value> 13261558Srgrimes */ 13271558Srgrimesint 13281558Srgrimesdo_opt(cpp, endcpp, ep, grp, has_hostp, exflagsp, cr) 13291558Srgrimes char **cpp, **endcpp; 13301558Srgrimes struct exportlist *ep; 13311558Srgrimes struct grouplist *grp; 13321558Srgrimes int *has_hostp; 13331558Srgrimes int *exflagsp; 13341558Srgrimes struct ucred *cr; 13351558Srgrimes{ 13361558Srgrimes char *cpoptarg, *cpoptend; 13371558Srgrimes char *cp, *endcp, *cpopt, savedc, savedc2; 13381558Srgrimes int allflag, usedarg; 13391558Srgrimes 13401558Srgrimes cpopt = *cpp; 13411558Srgrimes cpopt++; 13421558Srgrimes cp = *endcpp; 13431558Srgrimes savedc = *cp; 13441558Srgrimes *cp = '\0'; 13451558Srgrimes while (cpopt && *cpopt) { 13461558Srgrimes allflag = 1; 13471558Srgrimes usedarg = -2; 134823681Speter if (cpoptend = strchr(cpopt, ',')) { 13491558Srgrimes *cpoptend++ = '\0'; 135023681Speter if (cpoptarg = strchr(cpopt, '=')) 13511558Srgrimes *cpoptarg++ = '\0'; 13521558Srgrimes } else { 135323681Speter if (cpoptarg = strchr(cpopt, '=')) 13541558Srgrimes *cpoptarg++ = '\0'; 13551558Srgrimes else { 13561558Srgrimes *cp = savedc; 13571558Srgrimes nextfield(&cp, &endcp); 13581558Srgrimes **endcpp = '\0'; 13591558Srgrimes if (endcp > cp && *cp != '-') { 13601558Srgrimes cpoptarg = cp; 13611558Srgrimes savedc2 = *endcp; 13621558Srgrimes *endcp = '\0'; 13631558Srgrimes usedarg = 0; 13641558Srgrimes } 13651558Srgrimes } 13661558Srgrimes } 13671558Srgrimes if (!strcmp(cpopt, "ro") || !strcmp(cpopt, "o")) { 13681558Srgrimes *exflagsp |= MNT_EXRDONLY; 13691558Srgrimes } else if (cpoptarg && (!strcmp(cpopt, "maproot") || 13701558Srgrimes !(allflag = strcmp(cpopt, "mapall")) || 13711558Srgrimes !strcmp(cpopt, "root") || !strcmp(cpopt, "r"))) { 13721558Srgrimes usedarg++; 13731558Srgrimes parsecred(cpoptarg, cr); 13741558Srgrimes if (allflag == 0) { 13751558Srgrimes *exflagsp |= MNT_EXPORTANON; 13761558Srgrimes opt_flags |= OP_MAPALL; 13771558Srgrimes } else 13781558Srgrimes opt_flags |= OP_MAPROOT; 13791558Srgrimes } else if (!strcmp(cpopt, "kerb") || !strcmp(cpopt, "k")) { 13801558Srgrimes *exflagsp |= MNT_EXKERB; 13811558Srgrimes opt_flags |= OP_KERB; 13821558Srgrimes } else if (cpoptarg && (!strcmp(cpopt, "mask") || 13831558Srgrimes !strcmp(cpopt, "m"))) { 13841558Srgrimes if (get_net(cpoptarg, &grp->gr_ptr.gt_net, 1)) { 13851558Srgrimes syslog(LOG_ERR, "Bad mask: %s", cpoptarg); 13861558Srgrimes return (1); 13871558Srgrimes } 13881558Srgrimes usedarg++; 13891558Srgrimes opt_flags |= OP_MASK; 13901558Srgrimes } else if (cpoptarg && (!strcmp(cpopt, "network") || 13911558Srgrimes !strcmp(cpopt, "n"))) { 13921558Srgrimes if (grp->gr_type != GT_NULL) { 13931558Srgrimes syslog(LOG_ERR, "Network/host conflict"); 13941558Srgrimes return (1); 13951558Srgrimes } else if (get_net(cpoptarg, &grp->gr_ptr.gt_net, 0)) { 13961558Srgrimes syslog(LOG_ERR, "Bad net: %s", cpoptarg); 13971558Srgrimes return (1); 13981558Srgrimes } 13991558Srgrimes grp->gr_type = GT_NET; 14001558Srgrimes *has_hostp = 1; 14011558Srgrimes usedarg++; 14021558Srgrimes opt_flags |= OP_NET; 14031558Srgrimes } else if (!strcmp(cpopt, "alldirs")) { 14041558Srgrimes opt_flags |= OP_ALLDIRS; 140527447Sdfr } else if (!strcmp(cpopt, "public")) { 140627447Sdfr *exflagsp |= MNT_EXPUBLIC; 140727447Sdfr } else if (!strcmp(cpopt, "webnfs")) { 140827447Sdfr *exflagsp |= (MNT_EXPUBLIC|MNT_EXRDONLY|MNT_EXPORTANON); 140927447Sdfr opt_flags |= OP_MAPALL; 141027447Sdfr } else if (cpoptarg && !strcmp(cpopt, "index")) { 141127447Sdfr ep->ex_indexfile = strdup(cpoptarg); 14121558Srgrimes#ifdef ISO 14131558Srgrimes } else if (cpoptarg && !strcmp(cpopt, "iso")) { 14141558Srgrimes if (get_isoaddr(cpoptarg, grp)) { 14151558Srgrimes syslog(LOG_ERR, "Bad iso addr: %s", cpoptarg); 14161558Srgrimes return (1); 14171558Srgrimes } 14181558Srgrimes *has_hostp = 1; 14191558Srgrimes usedarg++; 14201558Srgrimes opt_flags |= OP_ISO; 14211558Srgrimes#endif /* ISO */ 14221558Srgrimes } else { 14231558Srgrimes syslog(LOG_ERR, "Bad opt %s", cpopt); 14241558Srgrimes return (1); 14251558Srgrimes } 14261558Srgrimes if (usedarg >= 0) { 14271558Srgrimes *endcp = savedc2; 14281558Srgrimes **endcpp = savedc; 14291558Srgrimes if (usedarg > 0) { 14301558Srgrimes *cpp = cp; 14311558Srgrimes *endcpp = endcp; 14321558Srgrimes } 14331558Srgrimes return (0); 14341558Srgrimes } 14351558Srgrimes cpopt = cpoptend; 14361558Srgrimes } 14371558Srgrimes **endcpp = savedc; 14381558Srgrimes return (0); 14391558Srgrimes} 14401558Srgrimes 14411558Srgrimes/* 14421558Srgrimes * Translate a character string to the corresponding list of network 14431558Srgrimes * addresses for a hostname. 14441558Srgrimes */ 14451558Srgrimesint 14467401Swpaulget_host(cp, grp, tgrp) 14471558Srgrimes char *cp; 14481558Srgrimes struct grouplist *grp; 14497401Swpaul struct grouplist *tgrp; 14501558Srgrimes{ 14517401Swpaul struct grouplist *checkgrp; 14521558Srgrimes struct hostent *hp, *nhp; 14531558Srgrimes char **addrp, **naddrp; 14541558Srgrimes struct hostent t_host; 14551558Srgrimes int i; 14561558Srgrimes u_long saddr; 14571558Srgrimes char *aptr[2]; 14581558Srgrimes 14591558Srgrimes if (grp->gr_type != GT_NULL) 14601558Srgrimes return (1); 14611558Srgrimes if ((hp = gethostbyname(cp)) == NULL) { 14621558Srgrimes if (isdigit(*cp)) { 14631558Srgrimes saddr = inet_addr(cp); 14641558Srgrimes if (saddr == -1) { 14659336Sdfr syslog(LOG_ERR, "Inet_addr failed for %s", cp); 14661558Srgrimes return (1); 14671558Srgrimes } 14681558Srgrimes if ((hp = gethostbyaddr((caddr_t)&saddr, sizeof (saddr), 14691558Srgrimes AF_INET)) == NULL) { 14701558Srgrimes hp = &t_host; 14711558Srgrimes hp->h_name = cp; 14721558Srgrimes hp->h_addrtype = AF_INET; 14731558Srgrimes hp->h_length = sizeof (u_long); 14741558Srgrimes hp->h_addr_list = aptr; 14751558Srgrimes aptr[0] = (char *)&saddr; 14761558Srgrimes aptr[1] = (char *)NULL; 14771558Srgrimes } 14781558Srgrimes } else { 14799336Sdfr syslog(LOG_ERR, "Gethostbyname failed for %s", cp); 14801558Srgrimes return (1); 14811558Srgrimes } 14821558Srgrimes } 14837401Swpaul /* 14847401Swpaul * Sanity check: make sure we don't already have an entry 14857401Swpaul * for this host in the grouplist. 14867401Swpaul */ 14877401Swpaul checkgrp = tgrp; 14887401Swpaul while (checkgrp) { 148917887Swpaul if (checkgrp->gr_type == GT_HOST && 149017887Swpaul checkgrp->gr_ptr.gt_hostent != NULL && 14917401Swpaul !strcmp(checkgrp->gr_ptr.gt_hostent->h_name, hp->h_name)) { 14927401Swpaul grp->gr_type = GT_IGNORE; 14937401Swpaul return(0); 14947401Swpaul } 14957401Swpaul checkgrp = checkgrp->gr_next; 14967401Swpaul } 14977401Swpaul 14981558Srgrimes grp->gr_type = GT_HOST; 14991558Srgrimes nhp = grp->gr_ptr.gt_hostent = (struct hostent *) 15001558Srgrimes malloc(sizeof(struct hostent)); 15011558Srgrimes if (nhp == (struct hostent *)NULL) 15021558Srgrimes out_of_mem(); 150323681Speter memmove(nhp, hp, sizeof(struct hostent)); 15041558Srgrimes i = strlen(hp->h_name)+1; 15051558Srgrimes nhp->h_name = (char *)malloc(i); 15061558Srgrimes if (nhp->h_name == (char *)NULL) 15071558Srgrimes out_of_mem(); 150823681Speter memmove(nhp->h_name, hp->h_name, i); 15091558Srgrimes addrp = hp->h_addr_list; 15101558Srgrimes i = 1; 15111558Srgrimes while (*addrp++) 15121558Srgrimes i++; 15131558Srgrimes naddrp = nhp->h_addr_list = (char **) 15141558Srgrimes malloc(i*sizeof(char *)); 15151558Srgrimes if (naddrp == (char **)NULL) 15161558Srgrimes out_of_mem(); 15171558Srgrimes addrp = hp->h_addr_list; 15181558Srgrimes while (*addrp) { 15191558Srgrimes *naddrp = (char *) 15201558Srgrimes malloc(hp->h_length); 15211558Srgrimes if (*naddrp == (char *)NULL) 15221558Srgrimes out_of_mem(); 152323681Speter memmove(*naddrp, *addrp, hp->h_length); 15241558Srgrimes addrp++; 15251558Srgrimes naddrp++; 15261558Srgrimes } 15271558Srgrimes *naddrp = (char *)NULL; 15281558Srgrimes if (debug) 15291558Srgrimes fprintf(stderr, "got host %s\n", hp->h_name); 15301558Srgrimes return (0); 15311558Srgrimes} 15321558Srgrimes 15331558Srgrimes/* 15341558Srgrimes * Free up an exports list component 15351558Srgrimes */ 15361558Srgrimesvoid 15371558Srgrimesfree_exp(ep) 15381558Srgrimes struct exportlist *ep; 15391558Srgrimes{ 15401558Srgrimes 15411558Srgrimes if (ep->ex_defdir) { 15421558Srgrimes free_host(ep->ex_defdir->dp_hosts); 15431558Srgrimes free((caddr_t)ep->ex_defdir); 15441558Srgrimes } 15451558Srgrimes if (ep->ex_fsdir) 15461558Srgrimes free(ep->ex_fsdir); 154727447Sdfr if (ep->ex_indexfile) 154827447Sdfr free(ep->ex_indexfile); 15491558Srgrimes free_dir(ep->ex_dirl); 15501558Srgrimes free((caddr_t)ep); 15511558Srgrimes} 15521558Srgrimes 15531558Srgrimes/* 15541558Srgrimes * Free hosts. 15551558Srgrimes */ 15561558Srgrimesvoid 15571558Srgrimesfree_host(hp) 15581558Srgrimes struct hostlist *hp; 15591558Srgrimes{ 15601558Srgrimes struct hostlist *hp2; 15611558Srgrimes 15621558Srgrimes while (hp) { 15631558Srgrimes hp2 = hp; 15641558Srgrimes hp = hp->ht_next; 15651558Srgrimes free((caddr_t)hp2); 15661558Srgrimes } 15671558Srgrimes} 15681558Srgrimes 15691558Srgrimesstruct hostlist * 15701558Srgrimesget_ht() 15711558Srgrimes{ 15721558Srgrimes struct hostlist *hp; 15731558Srgrimes 15741558Srgrimes hp = (struct hostlist *)malloc(sizeof (struct hostlist)); 15751558Srgrimes if (hp == (struct hostlist *)NULL) 15761558Srgrimes out_of_mem(); 15771558Srgrimes hp->ht_next = (struct hostlist *)NULL; 15789336Sdfr hp->ht_flag = 0; 15791558Srgrimes return (hp); 15801558Srgrimes} 15811558Srgrimes 15821558Srgrimes#ifdef ISO 15831558Srgrimes/* 15841558Srgrimes * Translate an iso address. 15851558Srgrimes */ 15861558Srgrimesget_isoaddr(cp, grp) 15871558Srgrimes char *cp; 15881558Srgrimes struct grouplist *grp; 15891558Srgrimes{ 15901558Srgrimes struct iso_addr *isop; 15911558Srgrimes struct sockaddr_iso *isoaddr; 15921558Srgrimes 15931558Srgrimes if (grp->gr_type != GT_NULL) 15941558Srgrimes return (1); 15951558Srgrimes if ((isop = iso_addr(cp)) == NULL) { 15961558Srgrimes syslog(LOG_ERR, 15971558Srgrimes "iso_addr failed, ignored"); 15981558Srgrimes return (1); 15991558Srgrimes } 16001558Srgrimes isoaddr = (struct sockaddr_iso *) 16011558Srgrimes malloc(sizeof (struct sockaddr_iso)); 16021558Srgrimes if (isoaddr == (struct sockaddr_iso *)NULL) 16031558Srgrimes out_of_mem(); 160423681Speter memset(isoaddr, 0, sizeof(struct sockaddr_iso)); 160523681Speter memmove(&isoaddr->siso_addr, isop, sizeof(struct iso_addr)); 160623681Speter isoaddr->siso_len = sizeof(struct sockaddr_iso); 16071558Srgrimes isoaddr->siso_family = AF_ISO; 16081558Srgrimes grp->gr_type = GT_ISO; 16091558Srgrimes grp->gr_ptr.gt_isoaddr = isoaddr; 16101558Srgrimes return (0); 16111558Srgrimes} 16121558Srgrimes#endif /* ISO */ 16131558Srgrimes 16141558Srgrimes/* 16151558Srgrimes * Out of memory, fatal 16161558Srgrimes */ 16171558Srgrimesvoid 16181558Srgrimesout_of_mem() 16191558Srgrimes{ 16201558Srgrimes 16211558Srgrimes syslog(LOG_ERR, "Out of memory"); 16221558Srgrimes exit(2); 16231558Srgrimes} 16241558Srgrimes 16251558Srgrimes/* 16261558Srgrimes * Do the mount syscall with the update flag to push the export info into 16271558Srgrimes * the kernel. 16281558Srgrimes */ 16291558Srgrimesint 16301558Srgrimesdo_mount(ep, grp, exflags, anoncrp, dirp, dirplen, fsb) 16311558Srgrimes struct exportlist *ep; 16321558Srgrimes struct grouplist *grp; 16331558Srgrimes int exflags; 16341558Srgrimes struct ucred *anoncrp; 16351558Srgrimes char *dirp; 16361558Srgrimes int dirplen; 16371558Srgrimes struct statfs *fsb; 16381558Srgrimes{ 16391558Srgrimes char *cp = (char *)NULL; 16401558Srgrimes u_long **addrp; 16411558Srgrimes int done; 16421558Srgrimes char savedc = '\0'; 16431558Srgrimes struct sockaddr_in sin, imask; 16441558Srgrimes union { 16451558Srgrimes struct ufs_args ua; 16461558Srgrimes struct iso_args ia; 16471558Srgrimes struct mfs_args ma; 16489336Sdfr#ifdef __NetBSD__ 16499336Sdfr struct msdosfs_args da; 16509336Sdfr#endif 16511558Srgrimes } args; 16521558Srgrimes u_long net; 16531558Srgrimes 16541558Srgrimes args.ua.fspec = 0; 16551558Srgrimes args.ua.export.ex_flags = exflags; 16561558Srgrimes args.ua.export.ex_anon = *anoncrp; 165727447Sdfr args.ua.export.ex_indexfile = ep->ex_indexfile; 165823681Speter memset(&sin, 0, sizeof(sin)); 165923681Speter memset(&imask, 0, sizeof(imask)); 16601558Srgrimes sin.sin_family = AF_INET; 16611558Srgrimes sin.sin_len = sizeof(sin); 16621558Srgrimes imask.sin_family = AF_INET; 16631558Srgrimes imask.sin_len = sizeof(sin); 16641558Srgrimes if (grp->gr_type == GT_HOST) 16651558Srgrimes addrp = (u_long **)grp->gr_ptr.gt_hostent->h_addr_list; 16661558Srgrimes else 16671558Srgrimes addrp = (u_long **)NULL; 16681558Srgrimes done = FALSE; 16691558Srgrimes while (!done) { 16701558Srgrimes switch (grp->gr_type) { 16711558Srgrimes case GT_HOST: 16721558Srgrimes if (addrp) { 16731558Srgrimes sin.sin_addr.s_addr = **addrp; 16741558Srgrimes args.ua.export.ex_addrlen = sizeof(sin); 16751558Srgrimes } else 16761558Srgrimes args.ua.export.ex_addrlen = 0; 16771558Srgrimes args.ua.export.ex_addr = (struct sockaddr *)&sin; 16781558Srgrimes args.ua.export.ex_masklen = 0; 16791558Srgrimes break; 16801558Srgrimes case GT_NET: 16811558Srgrimes if (grp->gr_ptr.gt_net.nt_mask) 16821558Srgrimes imask.sin_addr.s_addr = grp->gr_ptr.gt_net.nt_mask; 16831558Srgrimes else { 16841558Srgrimes net = ntohl(grp->gr_ptr.gt_net.nt_net); 16851558Srgrimes if (IN_CLASSA(net)) 16861558Srgrimes imask.sin_addr.s_addr = inet_addr("255.0.0.0"); 16871558Srgrimes else if (IN_CLASSB(net)) 16881558Srgrimes imask.sin_addr.s_addr = 16891558Srgrimes inet_addr("255.255.0.0"); 16901558Srgrimes else 16911558Srgrimes imask.sin_addr.s_addr = 16921558Srgrimes inet_addr("255.255.255.0"); 16931558Srgrimes grp->gr_ptr.gt_net.nt_mask = imask.sin_addr.s_addr; 16941558Srgrimes } 16951558Srgrimes sin.sin_addr.s_addr = grp->gr_ptr.gt_net.nt_net; 16961558Srgrimes args.ua.export.ex_addr = (struct sockaddr *)&sin; 16971558Srgrimes args.ua.export.ex_addrlen = sizeof (sin); 16981558Srgrimes args.ua.export.ex_mask = (struct sockaddr *)&imask; 16991558Srgrimes args.ua.export.ex_masklen = sizeof (imask); 17001558Srgrimes break; 17011558Srgrimes#ifdef ISO 17021558Srgrimes case GT_ISO: 17031558Srgrimes args.ua.export.ex_addr = 17041558Srgrimes (struct sockaddr *)grp->gr_ptr.gt_isoaddr; 17051558Srgrimes args.ua.export.ex_addrlen = 17061558Srgrimes sizeof(struct sockaddr_iso); 17071558Srgrimes args.ua.export.ex_masklen = 0; 17081558Srgrimes break; 17091558Srgrimes#endif /* ISO */ 17107401Swpaul case GT_IGNORE: 17117401Swpaul return(0); 17127401Swpaul break; 17131558Srgrimes default: 17141558Srgrimes syslog(LOG_ERR, "Bad grouptype"); 17151558Srgrimes if (cp) 17161558Srgrimes *cp = savedc; 17171558Srgrimes return (1); 17181558Srgrimes }; 17191558Srgrimes 17201558Srgrimes /* 17211558Srgrimes * XXX: 17221558Srgrimes * Maybe I should just use the fsb->f_mntonname path instead 17231558Srgrimes * of looping back up the dirp to the mount point?? 17241558Srgrimes * Also, needs to know how to export all types of local 172523681Speter * exportable file systems and not just "ufs". 17261558Srgrimes */ 17279336Sdfr while (mount(fsb->f_fstypename, dirp, 17281558Srgrimes fsb->f_flags | MNT_UPDATE, (caddr_t)&args) < 0) { 17291558Srgrimes if (cp) 17301558Srgrimes *cp-- = savedc; 17311558Srgrimes else 17321558Srgrimes cp = dirp + dirplen - 1; 17331558Srgrimes if (errno == EPERM) { 17341558Srgrimes syslog(LOG_ERR, 17351558Srgrimes "Can't change attributes for %s.\n", dirp); 17361558Srgrimes return (1); 17371558Srgrimes } 17381558Srgrimes if (opt_flags & OP_ALLDIRS) { 17394895Swollman syslog(LOG_ERR, "Could not remount %s: %m", 17404895Swollman dirp); 17411558Srgrimes return (1); 17421558Srgrimes } 17431558Srgrimes /* back up over the last component */ 17441558Srgrimes while (*cp == '/' && cp > dirp) 17451558Srgrimes cp--; 17461558Srgrimes while (*(cp - 1) != '/' && cp > dirp) 17471558Srgrimes cp--; 17481558Srgrimes if (cp == dirp) { 17491558Srgrimes if (debug) 17501558Srgrimes fprintf(stderr,"mnt unsucc\n"); 17511558Srgrimes syslog(LOG_ERR, "Can't export %s", dirp); 17521558Srgrimes return (1); 17531558Srgrimes } 17541558Srgrimes savedc = *cp; 17551558Srgrimes *cp = '\0'; 17561558Srgrimes } 17571558Srgrimes if (addrp) { 17581558Srgrimes ++addrp; 17591558Srgrimes if (*addrp == (u_long *)NULL) 17601558Srgrimes done = TRUE; 17611558Srgrimes } else 17621558Srgrimes done = TRUE; 17631558Srgrimes } 17641558Srgrimes if (cp) 17651558Srgrimes *cp = savedc; 17661558Srgrimes return (0); 17671558Srgrimes} 17681558Srgrimes 17691558Srgrimes/* 17701558Srgrimes * Translate a net address. 17711558Srgrimes */ 17721558Srgrimesint 17731558Srgrimesget_net(cp, net, maskflg) 17741558Srgrimes char *cp; 17751558Srgrimes struct netmsk *net; 17761558Srgrimes int maskflg; 17771558Srgrimes{ 17781558Srgrimes struct netent *np; 17791558Srgrimes long netaddr; 17801558Srgrimes struct in_addr inetaddr, inetaddr2; 17811558Srgrimes char *name; 17821558Srgrimes 178325318Spst if (isdigit(*cp) && ((netaddr = inet_network(cp)) != -1)) { 17841558Srgrimes inetaddr = inet_makeaddr(netaddr, 0); 17851558Srgrimes /* 17861558Srgrimes * Due to arbritrary subnet masks, you don't know how many 17871558Srgrimes * bits to shift the address to make it into a network, 17881558Srgrimes * however you do know how to make a network address into 17891558Srgrimes * a host with host == 0 and then compare them. 17901558Srgrimes * (What a pest) 17911558Srgrimes */ 17921558Srgrimes if (!maskflg) { 17931558Srgrimes setnetent(0); 17941558Srgrimes while (np = getnetent()) { 17951558Srgrimes inetaddr2 = inet_makeaddr(np->n_net, 0); 17961558Srgrimes if (inetaddr2.s_addr == inetaddr.s_addr) 17971558Srgrimes break; 17981558Srgrimes } 17991558Srgrimes endnetent(); 18001558Srgrimes } 180125318Spst } else if ((np = getnetbyname(cp)) != NULL) { 180225318Spst inetaddr = inet_makeaddr(np->n_net, 0); 18031558Srgrimes } else 18041558Srgrimes return (1); 180525318Spst 18061558Srgrimes if (maskflg) 18071558Srgrimes net->nt_mask = inetaddr.s_addr; 18081558Srgrimes else { 18091558Srgrimes if (np) 18101558Srgrimes name = np->n_name; 18111558Srgrimes else 18121558Srgrimes name = inet_ntoa(inetaddr); 18131558Srgrimes net->nt_name = (char *)malloc(strlen(name) + 1); 18141558Srgrimes if (net->nt_name == (char *)NULL) 18151558Srgrimes out_of_mem(); 18161558Srgrimes strcpy(net->nt_name, name); 18171558Srgrimes net->nt_net = inetaddr.s_addr; 18181558Srgrimes } 18191558Srgrimes return (0); 18201558Srgrimes} 18211558Srgrimes 18221558Srgrimes/* 18231558Srgrimes * Parse out the next white space separated field 18241558Srgrimes */ 18251558Srgrimesvoid 18261558Srgrimesnextfield(cp, endcp) 18271558Srgrimes char **cp; 18281558Srgrimes char **endcp; 18291558Srgrimes{ 18301558Srgrimes char *p; 18311558Srgrimes 18321558Srgrimes p = *cp; 18331558Srgrimes while (*p == ' ' || *p == '\t') 18341558Srgrimes p++; 18351558Srgrimes if (*p == '\n' || *p == '\0') 18361558Srgrimes *cp = *endcp = p; 18371558Srgrimes else { 18381558Srgrimes *cp = p++; 18391558Srgrimes while (*p != ' ' && *p != '\t' && *p != '\n' && *p != '\0') 18401558Srgrimes p++; 18411558Srgrimes *endcp = p; 18421558Srgrimes } 18431558Srgrimes} 18441558Srgrimes 18451558Srgrimes/* 18461558Srgrimes * Get an exports file line. Skip over blank lines and handle line 18471558Srgrimes * continuations. 18481558Srgrimes */ 18491558Srgrimesint 18501558Srgrimesget_line() 18511558Srgrimes{ 18521558Srgrimes char *p, *cp; 18531558Srgrimes int len; 18541558Srgrimes int totlen, cont_line; 18551558Srgrimes 18561558Srgrimes /* 18571558Srgrimes * Loop around ignoring blank lines and getting all continuation lines. 18581558Srgrimes */ 18591558Srgrimes p = line; 18601558Srgrimes totlen = 0; 18611558Srgrimes do { 18621558Srgrimes if (fgets(p, LINESIZ - totlen, exp_file) == NULL) 18631558Srgrimes return (0); 18641558Srgrimes len = strlen(p); 18651558Srgrimes cp = p + len - 1; 18661558Srgrimes cont_line = 0; 18671558Srgrimes while (cp >= p && 18681558Srgrimes (*cp == ' ' || *cp == '\t' || *cp == '\n' || *cp == '\\')) { 18691558Srgrimes if (*cp == '\\') 18701558Srgrimes cont_line = 1; 18711558Srgrimes cp--; 18721558Srgrimes len--; 18731558Srgrimes } 18741558Srgrimes *++cp = '\0'; 18751558Srgrimes if (len > 0) { 18761558Srgrimes totlen += len; 18771558Srgrimes if (totlen >= LINESIZ) { 18781558Srgrimes syslog(LOG_ERR, "Exports line too long"); 18791558Srgrimes exit(2); 18801558Srgrimes } 18811558Srgrimes p = cp; 18821558Srgrimes } 18831558Srgrimes } while (totlen == 0 || cont_line); 18841558Srgrimes return (1); 18851558Srgrimes} 18861558Srgrimes 18871558Srgrimes/* 18881558Srgrimes * Parse a description of a credential. 18891558Srgrimes */ 18901558Srgrimesvoid 18911558Srgrimesparsecred(namelist, cr) 18921558Srgrimes char *namelist; 18931558Srgrimes struct ucred *cr; 18941558Srgrimes{ 18951558Srgrimes char *name; 18961558Srgrimes int cnt; 18971558Srgrimes char *names; 18981558Srgrimes struct passwd *pw; 18991558Srgrimes struct group *gr; 19001558Srgrimes int ngroups, groups[NGROUPS + 1]; 19011558Srgrimes 19021558Srgrimes /* 19031558Srgrimes * Set up the unpriviledged user. 19041558Srgrimes */ 19051558Srgrimes cr->cr_ref = 1; 19061558Srgrimes cr->cr_uid = -2; 19071558Srgrimes cr->cr_groups[0] = -2; 19081558Srgrimes cr->cr_ngroups = 1; 19091558Srgrimes /* 19101558Srgrimes * Get the user's password table entry. 19111558Srgrimes */ 19121558Srgrimes names = strsep(&namelist, " \t\n"); 19131558Srgrimes name = strsep(&names, ":"); 19141558Srgrimes if (isdigit(*name) || *name == '-') 19151558Srgrimes pw = getpwuid(atoi(name)); 19161558Srgrimes else 19171558Srgrimes pw = getpwnam(name); 19181558Srgrimes /* 19191558Srgrimes * Credentials specified as those of a user. 19201558Srgrimes */ 19211558Srgrimes if (names == NULL) { 19221558Srgrimes if (pw == NULL) { 19231558Srgrimes syslog(LOG_ERR, "Unknown user: %s", name); 19241558Srgrimes return; 19251558Srgrimes } 19261558Srgrimes cr->cr_uid = pw->pw_uid; 19271558Srgrimes ngroups = NGROUPS + 1; 19281558Srgrimes if (getgrouplist(pw->pw_name, pw->pw_gid, groups, &ngroups)) 19291558Srgrimes syslog(LOG_ERR, "Too many groups"); 19301558Srgrimes /* 19311558Srgrimes * Convert from int's to gid_t's and compress out duplicate 19321558Srgrimes */ 19331558Srgrimes cr->cr_ngroups = ngroups - 1; 19341558Srgrimes cr->cr_groups[0] = groups[0]; 19351558Srgrimes for (cnt = 2; cnt < ngroups; cnt++) 19361558Srgrimes cr->cr_groups[cnt - 1] = groups[cnt]; 19371558Srgrimes return; 19381558Srgrimes } 19391558Srgrimes /* 19401558Srgrimes * Explicit credential specified as a colon separated list: 19411558Srgrimes * uid:gid:gid:... 19421558Srgrimes */ 19431558Srgrimes if (pw != NULL) 19441558Srgrimes cr->cr_uid = pw->pw_uid; 19451558Srgrimes else if (isdigit(*name) || *name == '-') 19461558Srgrimes cr->cr_uid = atoi(name); 19471558Srgrimes else { 19481558Srgrimes syslog(LOG_ERR, "Unknown user: %s", name); 19491558Srgrimes return; 19501558Srgrimes } 19511558Srgrimes cr->cr_ngroups = 0; 19521558Srgrimes while (names != NULL && *names != '\0' && cr->cr_ngroups < NGROUPS) { 19531558Srgrimes name = strsep(&names, ":"); 19541558Srgrimes if (isdigit(*name) || *name == '-') { 19551558Srgrimes cr->cr_groups[cr->cr_ngroups++] = atoi(name); 19561558Srgrimes } else { 19571558Srgrimes if ((gr = getgrnam(name)) == NULL) { 19581558Srgrimes syslog(LOG_ERR, "Unknown group: %s", name); 19591558Srgrimes continue; 19601558Srgrimes } 19611558Srgrimes cr->cr_groups[cr->cr_ngroups++] = gr->gr_gid; 19621558Srgrimes } 19631558Srgrimes } 19641558Srgrimes if (names != NULL && *names != '\0' && cr->cr_ngroups == NGROUPS) 19651558Srgrimes syslog(LOG_ERR, "Too many groups"); 19661558Srgrimes} 19671558Srgrimes 19681558Srgrimes#define STRSIZ (RPCMNT_NAMELEN+RPCMNT_PATHLEN+50) 19691558Srgrimes/* 19701558Srgrimes * Routines that maintain the remote mounttab 19711558Srgrimes */ 19721558Srgrimesvoid 19731558Srgrimesget_mountlist() 19741558Srgrimes{ 19751558Srgrimes struct mountlist *mlp, **mlpp; 197623681Speter char *host, *dirp, *cp; 19771558Srgrimes int len; 19781558Srgrimes char str[STRSIZ]; 19791558Srgrimes FILE *mlfile; 19801558Srgrimes 19811558Srgrimes if ((mlfile = fopen(_PATH_RMOUNTLIST, "r")) == NULL) { 19821558Srgrimes syslog(LOG_ERR, "Can't open %s", _PATH_RMOUNTLIST); 19831558Srgrimes return; 19841558Srgrimes } 19851558Srgrimes mlpp = &mlhead; 19861558Srgrimes while (fgets(str, STRSIZ, mlfile) != NULL) { 198723681Speter cp = str; 198823681Speter host = strsep(&cp, " \t\n"); 198923681Speter dirp = strsep(&cp, " \t\n"); 199023681Speter if (host == NULL || dirp == NULL) 19911558Srgrimes continue; 19921558Srgrimes mlp = (struct mountlist *)malloc(sizeof (*mlp)); 199323681Speter strncpy(mlp->ml_host, host, RPCMNT_NAMELEN); 199423681Speter mlp->ml_host[RPCMNT_NAMELEN] = '\0'; 199523681Speter strncpy(mlp->ml_dirp, dirp, RPCMNT_PATHLEN); 199623681Speter mlp->ml_dirp[RPCMNT_PATHLEN] = '\0'; 19971558Srgrimes mlp->ml_next = (struct mountlist *)NULL; 19981558Srgrimes *mlpp = mlp; 19991558Srgrimes mlpp = &mlp->ml_next; 20001558Srgrimes } 20011558Srgrimes fclose(mlfile); 20021558Srgrimes} 20031558Srgrimes 20041558Srgrimesvoid 20051558Srgrimesdel_mlist(hostp, dirp) 20061558Srgrimes char *hostp, *dirp; 20071558Srgrimes{ 20081558Srgrimes struct mountlist *mlp, **mlpp; 20091558Srgrimes struct mountlist *mlp2; 20101558Srgrimes FILE *mlfile; 20111558Srgrimes int fnd = 0; 20121558Srgrimes 20131558Srgrimes mlpp = &mlhead; 20141558Srgrimes mlp = mlhead; 20151558Srgrimes while (mlp) { 20161558Srgrimes if (!strcmp(mlp->ml_host, hostp) && 20171558Srgrimes (!dirp || !strcmp(mlp->ml_dirp, dirp))) { 20181558Srgrimes fnd = 1; 20191558Srgrimes mlp2 = mlp; 20201558Srgrimes *mlpp = mlp = mlp->ml_next; 20211558Srgrimes free((caddr_t)mlp2); 20221558Srgrimes } else { 20231558Srgrimes mlpp = &mlp->ml_next; 20241558Srgrimes mlp = mlp->ml_next; 20251558Srgrimes } 20261558Srgrimes } 20271558Srgrimes if (fnd) { 20281558Srgrimes if ((mlfile = fopen(_PATH_RMOUNTLIST, "w")) == NULL) { 20291558Srgrimes syslog(LOG_ERR,"Can't update %s", _PATH_RMOUNTLIST); 20301558Srgrimes return; 20311558Srgrimes } 20321558Srgrimes mlp = mlhead; 20331558Srgrimes while (mlp) { 20341558Srgrimes fprintf(mlfile, "%s %s\n", mlp->ml_host, mlp->ml_dirp); 20351558Srgrimes mlp = mlp->ml_next; 20361558Srgrimes } 20371558Srgrimes fclose(mlfile); 20381558Srgrimes } 20391558Srgrimes} 20401558Srgrimes 20411558Srgrimesvoid 20421558Srgrimesadd_mlist(hostp, dirp) 20431558Srgrimes char *hostp, *dirp; 20441558Srgrimes{ 20451558Srgrimes struct mountlist *mlp, **mlpp; 20461558Srgrimes FILE *mlfile; 20471558Srgrimes 20481558Srgrimes mlpp = &mlhead; 20491558Srgrimes mlp = mlhead; 20501558Srgrimes while (mlp) { 20511558Srgrimes if (!strcmp(mlp->ml_host, hostp) && !strcmp(mlp->ml_dirp, dirp)) 20521558Srgrimes return; 20531558Srgrimes mlpp = &mlp->ml_next; 20541558Srgrimes mlp = mlp->ml_next; 20551558Srgrimes } 20561558Srgrimes mlp = (struct mountlist *)malloc(sizeof (*mlp)); 20571558Srgrimes strncpy(mlp->ml_host, hostp, RPCMNT_NAMELEN); 20581558Srgrimes mlp->ml_host[RPCMNT_NAMELEN] = '\0'; 20591558Srgrimes strncpy(mlp->ml_dirp, dirp, RPCMNT_PATHLEN); 20601558Srgrimes mlp->ml_dirp[RPCMNT_PATHLEN] = '\0'; 20611558Srgrimes mlp->ml_next = (struct mountlist *)NULL; 20621558Srgrimes *mlpp = mlp; 20631558Srgrimes if ((mlfile = fopen(_PATH_RMOUNTLIST, "a")) == NULL) { 20641558Srgrimes syslog(LOG_ERR, "Can't update %s", _PATH_RMOUNTLIST); 20651558Srgrimes return; 20661558Srgrimes } 20671558Srgrimes fprintf(mlfile, "%s %s\n", mlp->ml_host, mlp->ml_dirp); 20681558Srgrimes fclose(mlfile); 20691558Srgrimes} 20701558Srgrimes 20711558Srgrimes/* 20721558Srgrimes * This function is called via. SIGTERM when the system is going down. 20731558Srgrimes * It sends a broadcast RPCMNT_UMNTALL. 20741558Srgrimes */ 20751558Srgrimesvoid 20761558Srgrimessend_umntall() 20771558Srgrimes{ 20781558Srgrimes (void) clnt_broadcast(RPCPROG_MNT, RPCMNT_VER1, RPCMNT_UMNTALL, 20791558Srgrimes xdr_void, (caddr_t)0, xdr_void, (caddr_t)0, umntall_each); 20801558Srgrimes exit(0); 20811558Srgrimes} 20821558Srgrimes 20831558Srgrimesint 20841558Srgrimesumntall_each(resultsp, raddr) 20851558Srgrimes caddr_t resultsp; 20861558Srgrimes struct sockaddr_in *raddr; 20871558Srgrimes{ 20881558Srgrimes return (1); 20891558Srgrimes} 20901558Srgrimes 20911558Srgrimes/* 20921558Srgrimes * Free up a group list. 20931558Srgrimes */ 20941558Srgrimesvoid 20951558Srgrimesfree_grp(grp) 20961558Srgrimes struct grouplist *grp; 20971558Srgrimes{ 20981558Srgrimes char **addrp; 20991558Srgrimes 21001558Srgrimes if (grp->gr_type == GT_HOST) { 21011558Srgrimes if (grp->gr_ptr.gt_hostent->h_name) { 21021558Srgrimes addrp = grp->gr_ptr.gt_hostent->h_addr_list; 21031558Srgrimes while (addrp && *addrp) 21041558Srgrimes free(*addrp++); 21051558Srgrimes free((caddr_t)grp->gr_ptr.gt_hostent->h_addr_list); 21061558Srgrimes free(grp->gr_ptr.gt_hostent->h_name); 21071558Srgrimes } 21081558Srgrimes free((caddr_t)grp->gr_ptr.gt_hostent); 21091558Srgrimes } else if (grp->gr_type == GT_NET) { 21101558Srgrimes if (grp->gr_ptr.gt_net.nt_name) 21111558Srgrimes free(grp->gr_ptr.gt_net.nt_name); 21121558Srgrimes } 21131558Srgrimes#ifdef ISO 21141558Srgrimes else if (grp->gr_type == GT_ISO) 21151558Srgrimes free((caddr_t)grp->gr_ptr.gt_isoaddr); 21161558Srgrimes#endif 21171558Srgrimes free((caddr_t)grp); 21181558Srgrimes} 21191558Srgrimes 21201558Srgrimes#ifdef DEBUG 21211558Srgrimesvoid 21221558SrgrimesSYSLOG(int pri, const char *fmt, ...) 21231558Srgrimes{ 21241558Srgrimes va_list ap; 21251558Srgrimes 21261558Srgrimes va_start(ap, fmt); 21271558Srgrimes vfprintf(stderr, fmt, ap); 21281558Srgrimes va_end(ap); 21291558Srgrimes} 21301558Srgrimes#endif /* DEBUG */ 21311558Srgrimes 21321558Srgrimes/* 21331558Srgrimes * Check options for consistency. 21341558Srgrimes */ 21351558Srgrimesint 21361558Srgrimescheck_options(dp) 21371558Srgrimes struct dirlist *dp; 21381558Srgrimes{ 21391558Srgrimes 21401558Srgrimes if (dp == (struct dirlist *)NULL) 21411558Srgrimes return (1); 21421558Srgrimes if ((opt_flags & (OP_MAPROOT | OP_MAPALL)) == (OP_MAPROOT | OP_MAPALL) || 21431558Srgrimes (opt_flags & (OP_MAPROOT | OP_KERB)) == (OP_MAPROOT | OP_KERB) || 21441558Srgrimes (opt_flags & (OP_MAPALL | OP_KERB)) == (OP_MAPALL | OP_KERB)) { 21451558Srgrimes syslog(LOG_ERR, "-mapall, -maproot and -kerb mutually exclusive"); 21461558Srgrimes return (1); 21471558Srgrimes } 21481558Srgrimes if ((opt_flags & OP_MASK) && (opt_flags & OP_NET) == 0) { 21491558Srgrimes syslog(LOG_ERR, "-mask requires -net"); 21501558Srgrimes return (1); 21511558Srgrimes } 21521558Srgrimes if ((opt_flags & (OP_NET | OP_ISO)) == (OP_NET | OP_ISO)) { 21531558Srgrimes syslog(LOG_ERR, "-net and -iso mutually exclusive"); 21541558Srgrimes return (1); 21551558Srgrimes } 21561558Srgrimes if ((opt_flags & OP_ALLDIRS) && dp->dp_left) { 21571558Srgrimes syslog(LOG_ERR, "-alldir has multiple directories"); 21581558Srgrimes return (1); 21591558Srgrimes } 21601558Srgrimes return (0); 21611558Srgrimes} 21621558Srgrimes 21631558Srgrimes/* 21641558Srgrimes * Check an absolute directory path for any symbolic links. Return true 21651558Srgrimes * if no symbolic links are found. 21661558Srgrimes */ 21671558Srgrimesint 21681558Srgrimescheck_dirpath(dirp) 21691558Srgrimes char *dirp; 21701558Srgrimes{ 21711558Srgrimes char *cp; 21721558Srgrimes int ret = 1; 21731558Srgrimes struct stat sb; 21741558Srgrimes 21751558Srgrimes cp = dirp + 1; 21761558Srgrimes while (*cp && ret) { 21771558Srgrimes if (*cp == '/') { 21781558Srgrimes *cp = '\0'; 21799336Sdfr if (lstat(dirp, &sb) < 0 || !S_ISDIR(sb.st_mode)) 21801558Srgrimes ret = 0; 21811558Srgrimes *cp = '/'; 21821558Srgrimes } 21831558Srgrimes cp++; 21841558Srgrimes } 21859336Sdfr if (lstat(dirp, &sb) < 0 || !S_ISDIR(sb.st_mode)) 21861558Srgrimes ret = 0; 21871558Srgrimes return (ret); 21881558Srgrimes} 21899336Sdfr 21909336Sdfr/* 21919336Sdfr * Just translate an ascii string to an integer. 21929336Sdfr */ 21939336Sdfrint 21949336Sdfrget_num(cp) 21959336Sdfr register char *cp; 21969336Sdfr{ 21979336Sdfr register int res = 0; 21989336Sdfr 21999336Sdfr while (*cp) { 22009336Sdfr if (*cp < '0' || *cp > '9') 22019336Sdfr return (-1); 22029336Sdfr res = res * 10 + (*cp++ - '0'); 22039336Sdfr } 22049336Sdfr return (res); 22059336Sdfr} 2206