mountd.c revision 37004
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[] = 4637004Sjoerg "$Id: mountd.c,v 1.29 1998/06/15 15:41:41 joerg 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; 22731705Sguidoint log = 0; 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; 25932656Sbde int c, error, mib[3]; 26023681Speter struct vfsconf vfc; 2611558Srgrimes 26223681Speter error = getvfsbyname("nfs", &vfc); 26323681Speter if (error && vfsisloadable("nfs")) { 2642999Swollman if(vfsload("nfs")) 2652999Swollman err(1, "vfsload(nfs)"); 2662999Swollman endvfsent(); /* flush cache */ 26723681Speter error = getvfsbyname("nfs", &vfc); 2682999Swollman } 26923681Speter if (error) 2702999Swollman errx(1, "NFS support is not available in the running kernel"); 2712999Swollman 27231665Sguido while ((c = getopt(argc, argv, "2dlnr")) != -1) 2731558Srgrimes switch (c) { 27425087Sdfr case '2': 27525087Sdfr force_v2 = 1; 27625087Sdfr break; 2779336Sdfr case 'n': 2789336Sdfr resvport_only = 0; 2799336Sdfr break; 2809336Sdfr case 'r': 2819336Sdfr dir_only = 0; 2829336Sdfr break; 2838688Sphk case 'd': 2848688Sphk debug = debug ? 0 : 1; 2858688Sphk break; 28631656Sguido case 'l': 28731656Sguido log = 1; 28831656Sguido break; 2891558Srgrimes default: 29031665Sguido fprintf(stderr, 29131665Sguido"Usage: mountd [-d] [-l] [-r] [-n] [export_file]\n"); 2921558Srgrimes exit(1); 2931558Srgrimes }; 2941558Srgrimes argc -= optind; 2951558Srgrimes argv += optind; 2961558Srgrimes grphead = (struct grouplist *)NULL; 2971558Srgrimes exphead = (struct exportlist *)NULL; 2981558Srgrimes mlhead = (struct mountlist *)NULL; 2991558Srgrimes if (argc == 1) { 3001558Srgrimes strncpy(exname, *argv, MAXPATHLEN-1); 3011558Srgrimes exname[MAXPATHLEN-1] = '\0'; 3021558Srgrimes } else 3031558Srgrimes strcpy(exname, _PATH_EXPORTS); 3041558Srgrimes openlog("mountd", LOG_PID, LOG_DAEMON); 3051558Srgrimes if (debug) 3061558Srgrimes fprintf(stderr,"Getting export list.\n"); 3071558Srgrimes get_exportlist(); 3081558Srgrimes if (debug) 3091558Srgrimes fprintf(stderr,"Getting mount list.\n"); 3101558Srgrimes get_mountlist(); 3111558Srgrimes if (debug) 3121558Srgrimes fprintf(stderr,"Here we go.\n"); 3131558Srgrimes if (debug == 0) { 3141558Srgrimes daemon(0, 0); 3151558Srgrimes signal(SIGINT, SIG_IGN); 3161558Srgrimes signal(SIGQUIT, SIG_IGN); 3171558Srgrimes } 3181558Srgrimes signal(SIGHUP, (void (*) __P((int))) get_exportlist); 3191558Srgrimes signal(SIGTERM, (void (*) __P((int))) send_umntall); 3201558Srgrimes { FILE *pidfile = fopen(_PATH_MOUNTDPID, "w"); 3211558Srgrimes if (pidfile != NULL) { 3221558Srgrimes fprintf(pidfile, "%d\n", getpid()); 3231558Srgrimes fclose(pidfile); 3241558Srgrimes } 3251558Srgrimes } 32624759Sguido if (!resvport_only) { 32724759Sguido mib[0] = CTL_VFS; 32832656Sbde mib[1] = vfc.vfc_typenum; 32924759Sguido mib[2] = NFS_NFSPRIVPORT; 33024759Sguido if (sysctl(mib, 3, NULL, NULL, &resvport_only, 33124759Sguido sizeof(resvport_only)) != 0 && errno != ENOENT) { 33224759Sguido syslog(LOG_ERR, "sysctl: %m"); 33324759Sguido exit(1); 33424759Sguido } 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; 37331656Sguido struct in_addr saddrin; 3741558Srgrimes u_long saddr; 3759336Sdfr u_short sport; 37623681Speter char rpcpath[RPCMNT_PATHLEN + 1], dirpath[MAXPATHLEN]; 37728911Sguido int bad = 0, defset, hostset; 3789336Sdfr sigset_t sighup_mask; 3791558Srgrimes 3809336Sdfr sigemptyset(&sighup_mask); 3819336Sdfr sigaddset(&sighup_mask, SIGHUP); 3821558Srgrimes saddr = transp->xp_raddr.sin_addr.s_addr; 38331656Sguido saddrin = transp->xp_raddr.sin_addr; 3849336Sdfr sport = ntohs(transp->xp_raddr.sin_port); 3851558Srgrimes hp = (struct hostent *)NULL; 3861558Srgrimes switch (rqstp->rq_proc) { 3871558Srgrimes case NULLPROC: 3881558Srgrimes if (!svc_sendreply(transp, xdr_void, (caddr_t)NULL)) 3891558Srgrimes syslog(LOG_ERR, "Can't send reply"); 3901558Srgrimes return; 3911558Srgrimes case RPCMNT_MOUNT: 3929336Sdfr if (sport >= IPPORT_RESERVED && resvport_only) { 39331656Sguido syslog(LOG_NOTICE, 39431656Sguido "mount request from %s from unprivileged port", 39531656Sguido inet_ntoa(saddrin)); 3961558Srgrimes svcerr_weakauth(transp); 3971558Srgrimes return; 3981558Srgrimes } 3991558Srgrimes if (!svc_getargs(transp, xdr_dir, rpcpath)) { 40031656Sguido syslog(LOG_NOTICE, "undecodable mount request from %s", 40131656Sguido inet_ntoa(saddrin)); 4021558Srgrimes svcerr_decode(transp); 4031558Srgrimes return; 4041558Srgrimes } 4051558Srgrimes 4061558Srgrimes /* 4071558Srgrimes * Get the real pathname and make sure it is a directory 4089336Sdfr * or a regular file if the -r option was specified 4099336Sdfr * and it exists. 4101558Srgrimes */ 4111558Srgrimes if (realpath(rpcpath, dirpath) == 0 || 4121558Srgrimes stat(dirpath, &stb) < 0 || 4139336Sdfr (!S_ISDIR(stb.st_mode) && 4149336Sdfr (dir_only || !S_ISREG(stb.st_mode))) || 4151558Srgrimes statfs(dirpath, &fsb) < 0) { 4161558Srgrimes chdir("/"); /* Just in case realpath doesn't */ 41731656Sguido syslog(LOG_NOTICE, 41831656Sguido "mount request from %s for non existant path %s", 41931656Sguido inet_ntoa(saddrin), dirpath); 4201558Srgrimes if (debug) 4211558Srgrimes fprintf(stderr, "stat failed on %s\n", dirpath); 42228911Sguido bad = ENOENT; /* We will send error reply later */ 4231558Srgrimes } 4241558Srgrimes 4251558Srgrimes /* Check in the exports list */ 4269336Sdfr sigprocmask(SIG_BLOCK, &sighup_mask, NULL); 4271558Srgrimes ep = ex_search(&fsb.f_fsid); 4289336Sdfr hostset = defset = 0; 4299336Sdfr if (ep && (chk_host(ep->ex_defdir, saddr, &defset, &hostset) || 4301558Srgrimes ((dp = dirp_search(ep->ex_dirl, dirpath)) && 4319336Sdfr chk_host(dp, saddr, &defset, &hostset)) || 4321558Srgrimes (defset && scan_tree(ep->ex_defdir, saddr) == 0 && 4331558Srgrimes scan_tree(ep->ex_dirl, saddr) == 0))) { 43428911Sguido if (bad) { 43528911Sguido if (!svc_sendreply(transp, xdr_long, 43628911Sguido (caddr_t)&bad)) 43728911Sguido syslog(LOG_ERR, "Can't send reply"); 43828911Sguido sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 43928911Sguido return; 44028911Sguido } 4419336Sdfr if (hostset & DP_HOSTSET) 4429336Sdfr fhr.fhr_flag = hostset; 4439336Sdfr else 4449336Sdfr fhr.fhr_flag = defset; 4459336Sdfr fhr.fhr_vers = rqstp->rq_vers; 4461558Srgrimes /* Get the file handle */ 44723681Speter memset(&fhr.fhr_fh, 0, sizeof(nfsfh_t)); 4489336Sdfr if (getfh(dirpath, (fhandle_t *)&fhr.fhr_fh) < 0) { 4491558Srgrimes bad = errno; 4501558Srgrimes syslog(LOG_ERR, "Can't get fh for %s", dirpath); 4511558Srgrimes if (!svc_sendreply(transp, xdr_long, 4521558Srgrimes (caddr_t)&bad)) 4531558Srgrimes syslog(LOG_ERR, "Can't send reply"); 4549336Sdfr sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 4551558Srgrimes return; 4561558Srgrimes } 4579336Sdfr if (!svc_sendreply(transp, xdr_fhs, (caddr_t)&fhr)) 4581558Srgrimes syslog(LOG_ERR, "Can't send reply"); 4591558Srgrimes if (hp == NULL) 4601558Srgrimes hp = gethostbyaddr((caddr_t)&saddr, 4611558Srgrimes sizeof(saddr), AF_INET); 4621558Srgrimes if (hp) 4631558Srgrimes add_mlist(hp->h_name, dirpath); 4641558Srgrimes else 46531656Sguido add_mlist(inet_ntoa(saddrin), 4661558Srgrimes dirpath); 4671558Srgrimes if (debug) 4681558Srgrimes fprintf(stderr,"Mount successfull.\n"); 46931656Sguido if (log) 47031656Sguido syslog(LOG_NOTICE, 47131656Sguido "mount request succeeded from %s for %s", 47231656Sguido inet_ntoa(saddrin), dirpath); 47331656Sguido } else { 4741558Srgrimes bad = EACCES; 47531656Sguido syslog(LOG_NOTICE, 47631656Sguido "mount request denied from %s for %s", 47731656Sguido inet_ntoa(saddrin), dirpath); 47831656Sguido } 47928911Sguido 48028911Sguido if (bad && !svc_sendreply(transp, xdr_long, (caddr_t)&bad)) 48128911Sguido syslog(LOG_ERR, "Can't send reply"); 4829336Sdfr sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 4831558Srgrimes return; 4841558Srgrimes case RPCMNT_DUMP: 4851558Srgrimes if (!svc_sendreply(transp, xdr_mlist, (caddr_t)NULL)) 4861558Srgrimes syslog(LOG_ERR, "Can't send reply"); 48731656Sguido else if (log) 48831656Sguido syslog(LOG_NOTICE, 48931656Sguido "dump request succeeded from %s", 49031656Sguido inet_ntoa(saddrin), dirpath); 4911558Srgrimes return; 4921558Srgrimes case RPCMNT_UMOUNT: 4939336Sdfr if (sport >= IPPORT_RESERVED && resvport_only) { 49431656Sguido syslog(LOG_NOTICE, 49531656Sguido "umount request from %s from unprivileged port", 49631656Sguido inet_ntoa(saddrin)); 4971558Srgrimes svcerr_weakauth(transp); 4981558Srgrimes return; 4991558Srgrimes } 5001558Srgrimes if (!svc_getargs(transp, xdr_dir, dirpath)) { 50131656Sguido syslog(LOG_NOTICE, "undecodable umount request from %s", 50231656Sguido inet_ntoa(saddrin)); 5031558Srgrimes svcerr_decode(transp); 5041558Srgrimes return; 5051558Srgrimes } 5061558Srgrimes if (!svc_sendreply(transp, xdr_void, (caddr_t)NULL)) 5071558Srgrimes syslog(LOG_ERR, "Can't send reply"); 5081558Srgrimes hp = gethostbyaddr((caddr_t)&saddr, sizeof(saddr), AF_INET); 5091558Srgrimes if (hp) 5101558Srgrimes del_mlist(hp->h_name, dirpath); 51131656Sguido del_mlist(inet_ntoa(saddrin), dirpath); 51231656Sguido if (log) 51331656Sguido syslog(LOG_NOTICE, 51431656Sguido "umount request succeeded from %s for %s", 51531656Sguido inet_ntoa(saddrin), dirpath); 5161558Srgrimes return; 5171558Srgrimes case RPCMNT_UMNTALL: 5189336Sdfr if (sport >= IPPORT_RESERVED && resvport_only) { 51931656Sguido syslog(LOG_NOTICE, 52031656Sguido "umountall request from %s from unprivileged port", 52131656Sguido inet_ntoa(saddrin)); 5221558Srgrimes svcerr_weakauth(transp); 5231558Srgrimes return; 5241558Srgrimes } 5251558Srgrimes if (!svc_sendreply(transp, xdr_void, (caddr_t)NULL)) 5261558Srgrimes syslog(LOG_ERR, "Can't send reply"); 5271558Srgrimes hp = gethostbyaddr((caddr_t)&saddr, sizeof(saddr), AF_INET); 5281558Srgrimes if (hp) 5291558Srgrimes del_mlist(hp->h_name, (char *)NULL); 53031656Sguido del_mlist(inet_ntoa(saddrin), (char *)NULL); 53131656Sguido if (log) 53231656Sguido syslog(LOG_NOTICE, 53331656Sguido "umountall request succeeded from %s", 53431656Sguido inet_ntoa(saddrin)); 5351558Srgrimes return; 5361558Srgrimes case RPCMNT_EXPORT: 5371558Srgrimes if (!svc_sendreply(transp, xdr_explist, (caddr_t)NULL)) 5381558Srgrimes syslog(LOG_ERR, "Can't send reply"); 53931656Sguido if (log) 54031656Sguido syslog(LOG_NOTICE, 54131656Sguido "export request succeeded from %s", 54231656Sguido inet_ntoa(saddrin)); 5431558Srgrimes return; 5441558Srgrimes default: 5451558Srgrimes svcerr_noproc(transp); 5461558Srgrimes return; 5471558Srgrimes } 5481558Srgrimes} 5491558Srgrimes 5501558Srgrimes/* 5511558Srgrimes * Xdr conversion for a dirpath string 5521558Srgrimes */ 5531558Srgrimesint 5541558Srgrimesxdr_dir(xdrsp, dirp) 5551558Srgrimes XDR *xdrsp; 5561558Srgrimes char *dirp; 5571558Srgrimes{ 5581558Srgrimes return (xdr_string(xdrsp, &dirp, RPCMNT_PATHLEN)); 5591558Srgrimes} 5601558Srgrimes 5611558Srgrimes/* 5629336Sdfr * Xdr routine to generate file handle reply 5631558Srgrimes */ 5641558Srgrimesint 5659336Sdfrxdr_fhs(xdrsp, cp) 5661558Srgrimes XDR *xdrsp; 5679336Sdfr caddr_t cp; 5681558Srgrimes{ 5699336Sdfr register struct fhreturn *fhrp = (struct fhreturn *)cp; 5709336Sdfr u_long ok = 0, len, auth; 5711558Srgrimes 5721558Srgrimes if (!xdr_long(xdrsp, &ok)) 5731558Srgrimes return (0); 5749336Sdfr switch (fhrp->fhr_vers) { 5759336Sdfr case 1: 5769336Sdfr return (xdr_opaque(xdrsp, (caddr_t)&fhrp->fhr_fh, NFSX_V2FH)); 5779336Sdfr case 3: 5789336Sdfr len = NFSX_V3FH; 5799336Sdfr if (!xdr_long(xdrsp, &len)) 5809336Sdfr return (0); 5819336Sdfr if (!xdr_opaque(xdrsp, (caddr_t)&fhrp->fhr_fh, len)) 5829336Sdfr return (0); 5839336Sdfr if (fhrp->fhr_flag & DP_KERB) 5849336Sdfr auth = RPCAUTH_KERB4; 5859336Sdfr else 5869336Sdfr auth = RPCAUTH_UNIX; 5879336Sdfr len = 1; 5889336Sdfr if (!xdr_long(xdrsp, &len)) 5899336Sdfr return (0); 5909336Sdfr return (xdr_long(xdrsp, &auth)); 5919336Sdfr }; 5929336Sdfr return (0); 5931558Srgrimes} 5941558Srgrimes 5951558Srgrimesint 5961558Srgrimesxdr_mlist(xdrsp, cp) 5971558Srgrimes XDR *xdrsp; 5981558Srgrimes caddr_t cp; 5991558Srgrimes{ 6001558Srgrimes struct mountlist *mlp; 6011558Srgrimes int true = 1; 6021558Srgrimes int false = 0; 6031558Srgrimes char *strp; 6041558Srgrimes 6051558Srgrimes mlp = mlhead; 6061558Srgrimes while (mlp) { 6071558Srgrimes if (!xdr_bool(xdrsp, &true)) 6081558Srgrimes return (0); 6091558Srgrimes strp = &mlp->ml_host[0]; 6101558Srgrimes if (!xdr_string(xdrsp, &strp, RPCMNT_NAMELEN)) 6111558Srgrimes return (0); 6121558Srgrimes strp = &mlp->ml_dirp[0]; 6131558Srgrimes if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN)) 6141558Srgrimes return (0); 6151558Srgrimes mlp = mlp->ml_next; 6161558Srgrimes } 6171558Srgrimes if (!xdr_bool(xdrsp, &false)) 6181558Srgrimes return (0); 6191558Srgrimes return (1); 6201558Srgrimes} 6211558Srgrimes 6221558Srgrimes/* 6231558Srgrimes * Xdr conversion for export list 6241558Srgrimes */ 6251558Srgrimesint 6261558Srgrimesxdr_explist(xdrsp, cp) 6271558Srgrimes XDR *xdrsp; 6281558Srgrimes caddr_t cp; 6291558Srgrimes{ 6301558Srgrimes struct exportlist *ep; 6311558Srgrimes int false = 0; 6329336Sdfr int putdef; 6339336Sdfr sigset_t sighup_mask; 6341558Srgrimes 6359336Sdfr sigemptyset(&sighup_mask); 6369336Sdfr sigaddset(&sighup_mask, SIGHUP); 6379336Sdfr sigprocmask(SIG_BLOCK, &sighup_mask, NULL); 6381558Srgrimes ep = exphead; 6391558Srgrimes while (ep) { 6401558Srgrimes putdef = 0; 6411558Srgrimes if (put_exlist(ep->ex_dirl, xdrsp, ep->ex_defdir, &putdef)) 6421558Srgrimes goto errout; 6431558Srgrimes if (ep->ex_defdir && putdef == 0 && 6441558Srgrimes put_exlist(ep->ex_defdir, xdrsp, (struct dirlist *)NULL, 6451558Srgrimes &putdef)) 6461558Srgrimes goto errout; 6471558Srgrimes ep = ep->ex_next; 6481558Srgrimes } 6499336Sdfr sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 6501558Srgrimes if (!xdr_bool(xdrsp, &false)) 6511558Srgrimes return (0); 6521558Srgrimes return (1); 6531558Srgrimeserrout: 6549336Sdfr sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 6551558Srgrimes return (0); 6561558Srgrimes} 6571558Srgrimes 6581558Srgrimes/* 6591558Srgrimes * Called from xdr_explist() to traverse the tree and export the 6601558Srgrimes * directory paths. 6611558Srgrimes */ 6621558Srgrimesint 6631558Srgrimesput_exlist(dp, xdrsp, adp, putdefp) 6641558Srgrimes struct dirlist *dp; 6651558Srgrimes XDR *xdrsp; 6661558Srgrimes struct dirlist *adp; 6671558Srgrimes int *putdefp; 6681558Srgrimes{ 6691558Srgrimes struct grouplist *grp; 6701558Srgrimes struct hostlist *hp; 6711558Srgrimes int true = 1; 6721558Srgrimes int false = 0; 6731558Srgrimes int gotalldir = 0; 6741558Srgrimes char *strp; 6751558Srgrimes 6761558Srgrimes if (dp) { 6771558Srgrimes if (put_exlist(dp->dp_left, xdrsp, adp, putdefp)) 6781558Srgrimes return (1); 6791558Srgrimes if (!xdr_bool(xdrsp, &true)) 6801558Srgrimes return (1); 6811558Srgrimes strp = dp->dp_dirp; 6821558Srgrimes if (!xdr_string(xdrsp, &strp, RPCMNT_PATHLEN)) 6831558Srgrimes return (1); 6841558Srgrimes if (adp && !strcmp(dp->dp_dirp, adp->dp_dirp)) { 6851558Srgrimes gotalldir = 1; 6861558Srgrimes *putdefp = 1; 6871558Srgrimes } 6881558Srgrimes if ((dp->dp_flag & DP_DEFSET) == 0 && 6891558Srgrimes (gotalldir == 0 || (adp->dp_flag & DP_DEFSET) == 0)) { 6901558Srgrimes hp = dp->dp_hosts; 6911558Srgrimes while (hp) { 6921558Srgrimes grp = hp->ht_grp; 6931558Srgrimes if (grp->gr_type == GT_HOST) { 6941558Srgrimes if (!xdr_bool(xdrsp, &true)) 6951558Srgrimes return (1); 6961558Srgrimes strp = grp->gr_ptr.gt_hostent->h_name; 6978871Srgrimes if (!xdr_string(xdrsp, &strp, 6981558Srgrimes RPCMNT_NAMELEN)) 6991558Srgrimes return (1); 7001558Srgrimes } else if (grp->gr_type == GT_NET) { 7011558Srgrimes if (!xdr_bool(xdrsp, &true)) 7021558Srgrimes return (1); 7031558Srgrimes strp = grp->gr_ptr.gt_net.nt_name; 7048871Srgrimes if (!xdr_string(xdrsp, &strp, 7051558Srgrimes RPCMNT_NAMELEN)) 7061558Srgrimes return (1); 7071558Srgrimes } 7081558Srgrimes hp = hp->ht_next; 7091558Srgrimes if (gotalldir && hp == (struct hostlist *)NULL) { 7101558Srgrimes hp = adp->dp_hosts; 7111558Srgrimes gotalldir = 0; 7121558Srgrimes } 7131558Srgrimes } 7141558Srgrimes } 7151558Srgrimes if (!xdr_bool(xdrsp, &false)) 7161558Srgrimes return (1); 7171558Srgrimes if (put_exlist(dp->dp_right, xdrsp, adp, putdefp)) 7181558Srgrimes return (1); 7191558Srgrimes } 7201558Srgrimes return (0); 7211558Srgrimes} 7221558Srgrimes 7231558Srgrimes#define LINESIZ 10240 7241558Srgrimeschar line[LINESIZ]; 7251558SrgrimesFILE *exp_file; 7261558Srgrimes 7271558Srgrimes/* 7281558Srgrimes * Get the export list 7291558Srgrimes */ 7301558Srgrimesvoid 7311558Srgrimesget_exportlist() 7321558Srgrimes{ 7331558Srgrimes struct exportlist *ep, *ep2; 7341558Srgrimes struct grouplist *grp, *tgrp; 7351558Srgrimes struct exportlist **epp; 7361558Srgrimes struct dirlist *dirhead; 7371558Srgrimes struct statfs fsb, *fsp; 7381558Srgrimes struct hostent *hpe; 7391558Srgrimes struct ucred anon; 7401558Srgrimes char *cp, *endcp, *dirp, *hst, *usr, *dom, savedc; 7411558Srgrimes int len, has_host, exflags, got_nondir, dirplen, num, i, netgrp; 7421558Srgrimes 7431558Srgrimes /* 7441558Srgrimes * First, get rid of the old list 7451558Srgrimes */ 7461558Srgrimes ep = exphead; 7471558Srgrimes while (ep) { 7481558Srgrimes ep2 = ep; 7491558Srgrimes ep = ep->ex_next; 7501558Srgrimes free_exp(ep2); 7511558Srgrimes } 7521558Srgrimes exphead = (struct exportlist *)NULL; 7531558Srgrimes 7541558Srgrimes grp = grphead; 7551558Srgrimes while (grp) { 7561558Srgrimes tgrp = grp; 7571558Srgrimes grp = grp->gr_next; 7581558Srgrimes free_grp(tgrp); 7591558Srgrimes } 7601558Srgrimes grphead = (struct grouplist *)NULL; 7611558Srgrimes 7621558Srgrimes /* 7631558Srgrimes * And delete exports that are in the kernel for all local 7641558Srgrimes * file systems. 7651558Srgrimes * XXX: Should know how to handle all local exportable file systems 76623681Speter * instead of just "ufs". 7671558Srgrimes */ 7681558Srgrimes num = getmntinfo(&fsp, MNT_NOWAIT); 7691558Srgrimes for (i = 0; i < num; i++) { 7701558Srgrimes union { 7711558Srgrimes struct ufs_args ua; 7721558Srgrimes struct iso_args ia; 7731558Srgrimes struct mfs_args ma; 7749336Sdfr struct msdosfs_args da; 7751558Srgrimes } targs; 7761558Srgrimes 77723681Speter if (!strcmp(fsp->f_fstypename, "mfs") || 77823681Speter !strcmp(fsp->f_fstypename, "ufs") || 77923681Speter !strcmp(fsp->f_fstypename, "msdos") || 78023681Speter !strcmp(fsp->f_fstypename, "cd9660")) { 7819336Sdfr targs.ua.fspec = NULL; 7829336Sdfr targs.ua.export.ex_flags = MNT_DELEXPORT; 7839336Sdfr if (mount(fsp->f_fstypename, fsp->f_mntonname, 7841558Srgrimes fsp->f_flags | MNT_UPDATE, 7851558Srgrimes (caddr_t)&targs) < 0) 7861558Srgrimes syslog(LOG_ERR, "Can't delete exports for %s", 7871558Srgrimes fsp->f_mntonname); 7881558Srgrimes } 7891558Srgrimes fsp++; 7901558Srgrimes } 7911558Srgrimes 7921558Srgrimes /* 7931558Srgrimes * Read in the exports file and build the list, calling 7941558Srgrimes * mount() as we go along to push the export rules into the kernel. 7951558Srgrimes */ 7961558Srgrimes if ((exp_file = fopen(exname, "r")) == NULL) { 7971558Srgrimes syslog(LOG_ERR, "Can't open %s", exname); 7981558Srgrimes exit(2); 7991558Srgrimes } 8001558Srgrimes dirhead = (struct dirlist *)NULL; 8011558Srgrimes while (get_line()) { 8021558Srgrimes if (debug) 8031558Srgrimes fprintf(stderr,"Got line %s\n",line); 8041558Srgrimes cp = line; 8051558Srgrimes nextfield(&cp, &endcp); 8061558Srgrimes if (*cp == '#') 8071558Srgrimes goto nextline; 8081558Srgrimes 8091558Srgrimes /* 8101558Srgrimes * Set defaults. 8111558Srgrimes */ 8121558Srgrimes has_host = FALSE; 8131558Srgrimes anon = def_anon; 8141558Srgrimes exflags = MNT_EXPORTED; 8151558Srgrimes got_nondir = 0; 8161558Srgrimes opt_flags = 0; 8171558Srgrimes ep = (struct exportlist *)NULL; 8181558Srgrimes 8191558Srgrimes /* 8201558Srgrimes * Create new exports list entry 8211558Srgrimes */ 8221558Srgrimes len = endcp-cp; 8231558Srgrimes tgrp = grp = get_grp(); 8241558Srgrimes while (len > 0) { 8251558Srgrimes if (len > RPCMNT_NAMELEN) { 8261558Srgrimes getexp_err(ep, tgrp); 8271558Srgrimes goto nextline; 8281558Srgrimes } 8291558Srgrimes if (*cp == '-') { 8301558Srgrimes if (ep == (struct exportlist *)NULL) { 8311558Srgrimes getexp_err(ep, tgrp); 8321558Srgrimes goto nextline; 8331558Srgrimes } 8341558Srgrimes if (debug) 8351558Srgrimes fprintf(stderr, "doing opt %s\n", cp); 8361558Srgrimes got_nondir = 1; 8371558Srgrimes if (do_opt(&cp, &endcp, ep, grp, &has_host, 8381558Srgrimes &exflags, &anon)) { 8391558Srgrimes getexp_err(ep, tgrp); 8401558Srgrimes goto nextline; 8411558Srgrimes } 8421558Srgrimes } else if (*cp == '/') { 8431558Srgrimes savedc = *endcp; 8441558Srgrimes *endcp = '\0'; 8451558Srgrimes if (check_dirpath(cp) && 8461558Srgrimes statfs(cp, &fsb) >= 0) { 8471558Srgrimes if (got_nondir) { 8481558Srgrimes syslog(LOG_ERR, "Dirs must be first"); 8491558Srgrimes getexp_err(ep, tgrp); 8501558Srgrimes goto nextline; 8511558Srgrimes } 8521558Srgrimes if (ep) { 8531558Srgrimes if (ep->ex_fs.val[0] != fsb.f_fsid.val[0] || 8541558Srgrimes ep->ex_fs.val[1] != fsb.f_fsid.val[1]) { 8551558Srgrimes getexp_err(ep, tgrp); 8561558Srgrimes goto nextline; 8571558Srgrimes } 8581558Srgrimes } else { 8591558Srgrimes /* 8601558Srgrimes * See if this directory is already 8611558Srgrimes * in the list. 8621558Srgrimes */ 8631558Srgrimes ep = ex_search(&fsb.f_fsid); 8641558Srgrimes if (ep == (struct exportlist *)NULL) { 8651558Srgrimes ep = get_exp(); 8661558Srgrimes ep->ex_fs = fsb.f_fsid; 8671558Srgrimes ep->ex_fsdir = (char *) 8681558Srgrimes malloc(strlen(fsb.f_mntonname) + 1); 8691558Srgrimes if (ep->ex_fsdir) 8701558Srgrimes strcpy(ep->ex_fsdir, 8711558Srgrimes fsb.f_mntonname); 8721558Srgrimes else 8731558Srgrimes out_of_mem(); 8741558Srgrimes if (debug) 8751558Srgrimes fprintf(stderr, 8761558Srgrimes "Making new ep fs=0x%x,0x%x\n", 8771558Srgrimes fsb.f_fsid.val[0], 8781558Srgrimes fsb.f_fsid.val[1]); 8791558Srgrimes } else if (debug) 8801558Srgrimes fprintf(stderr, 8811558Srgrimes "Found ep fs=0x%x,0x%x\n", 8821558Srgrimes fsb.f_fsid.val[0], 8831558Srgrimes fsb.f_fsid.val[1]); 8841558Srgrimes } 8851558Srgrimes 8861558Srgrimes /* 8871558Srgrimes * Add dirpath to export mount point. 8881558Srgrimes */ 8891558Srgrimes dirp = add_expdir(&dirhead, cp, len); 8901558Srgrimes dirplen = len; 8911558Srgrimes } else { 8921558Srgrimes getexp_err(ep, tgrp); 8931558Srgrimes goto nextline; 8941558Srgrimes } 8951558Srgrimes *endcp = savedc; 8961558Srgrimes } else { 8971558Srgrimes savedc = *endcp; 8981558Srgrimes *endcp = '\0'; 8991558Srgrimes got_nondir = 1; 9001558Srgrimes if (ep == (struct exportlist *)NULL) { 9011558Srgrimes getexp_err(ep, tgrp); 9021558Srgrimes goto nextline; 9031558Srgrimes } 9041558Srgrimes 9051558Srgrimes /* 9061558Srgrimes * Get the host or netgroup. 9071558Srgrimes */ 9081558Srgrimes setnetgrent(cp); 9091558Srgrimes netgrp = getnetgrent(&hst, &usr, &dom); 9101558Srgrimes do { 9111558Srgrimes if (has_host) { 9121558Srgrimes grp->gr_next = get_grp(); 9131558Srgrimes grp = grp->gr_next; 9141558Srgrimes } 9151558Srgrimes if (netgrp) { 91637003Sjoerg if (hst == 0) { 91737003Sjoerg syslog(LOG_ERR, "Null hostname in netgroup %s, skipping", cp); 91837004Sjoerg grp->gr_type = GT_IGNORE; 91937003Sjoerg } else if (get_host(hst, grp, tgrp)) { 92029317Sjlemon syslog(LOG_ERR, "Bad host %s in netgroup %s, skipping", hst, cp); 92129317Sjlemon grp->gr_type = GT_IGNORE; 9221558Srgrimes } 9237401Swpaul } else if (get_host(cp, grp, tgrp)) { 92429317Sjlemon syslog(LOG_ERR, "Bad host %s, skipping", cp); 92529317Sjlemon grp->gr_type = GT_IGNORE; 9261558Srgrimes } 9271558Srgrimes has_host = TRUE; 9281558Srgrimes } while (netgrp && getnetgrent(&hst, &usr, &dom)); 9291558Srgrimes endnetgrent(); 9301558Srgrimes *endcp = savedc; 9311558Srgrimes } 9321558Srgrimes cp = endcp; 9331558Srgrimes nextfield(&cp, &endcp); 9341558Srgrimes len = endcp - cp; 9351558Srgrimes } 9361558Srgrimes if (check_options(dirhead)) { 9371558Srgrimes getexp_err(ep, tgrp); 9381558Srgrimes goto nextline; 9391558Srgrimes } 9401558Srgrimes if (!has_host) { 9411558Srgrimes grp->gr_type = GT_HOST; 9421558Srgrimes if (debug) 9431558Srgrimes fprintf(stderr,"Adding a default entry\n"); 9441558Srgrimes /* add a default group and make the grp list NULL */ 9451558Srgrimes hpe = (struct hostent *)malloc(sizeof(struct hostent)); 9461558Srgrimes if (hpe == (struct hostent *)NULL) 9471558Srgrimes out_of_mem(); 94812348Sjoerg hpe->h_name = strdup("Default"); 9491558Srgrimes hpe->h_addrtype = AF_INET; 9501558Srgrimes hpe->h_length = sizeof (u_long); 9511558Srgrimes hpe->h_addr_list = (char **)NULL; 9521558Srgrimes grp->gr_ptr.gt_hostent = hpe; 9531558Srgrimes 9541558Srgrimes /* 9551558Srgrimes * Don't allow a network export coincide with a list of 9561558Srgrimes * host(s) on the same line. 9571558Srgrimes */ 9581558Srgrimes } else if ((opt_flags & OP_NET) && tgrp->gr_next) { 9591558Srgrimes getexp_err(ep, tgrp); 9601558Srgrimes goto nextline; 96129317Sjlemon 96229317Sjlemon /* 96329317Sjlemon * If an export list was specified on this line, make sure 96429317Sjlemon * that we have at least one valid entry, otherwise skip it. 96529317Sjlemon */ 96629317Sjlemon } else { 96729317Sjlemon grp = tgrp; 96829317Sjlemon while (grp && grp->gr_type == GT_IGNORE) 96929317Sjlemon grp = grp->gr_next; 97029317Sjlemon if (! grp) { 97129317Sjlemon getexp_err(ep, tgrp); 97229317Sjlemon goto nextline; 97329317Sjlemon } 9741558Srgrimes } 9751558Srgrimes 9761558Srgrimes /* 9771558Srgrimes * Loop through hosts, pushing the exports into the kernel. 9781558Srgrimes * After loop, tgrp points to the start of the list and 9791558Srgrimes * grp points to the last entry in the list. 9801558Srgrimes */ 9811558Srgrimes grp = tgrp; 9821558Srgrimes do { 9831558Srgrimes if (do_mount(ep, grp, exflags, &anon, dirp, 9841558Srgrimes dirplen, &fsb)) { 9851558Srgrimes getexp_err(ep, tgrp); 9861558Srgrimes goto nextline; 9871558Srgrimes } 9881558Srgrimes } while (grp->gr_next && (grp = grp->gr_next)); 9891558Srgrimes 9901558Srgrimes /* 9911558Srgrimes * Success. Update the data structures. 9921558Srgrimes */ 9931558Srgrimes if (has_host) { 9949336Sdfr hang_dirp(dirhead, tgrp, ep, opt_flags); 9951558Srgrimes grp->gr_next = grphead; 9961558Srgrimes grphead = tgrp; 9971558Srgrimes } else { 9981558Srgrimes hang_dirp(dirhead, (struct grouplist *)NULL, ep, 9999336Sdfr opt_flags); 10001558Srgrimes free_grp(grp); 10011558Srgrimes } 10021558Srgrimes dirhead = (struct dirlist *)NULL; 10031558Srgrimes if ((ep->ex_flag & EX_LINKED) == 0) { 10041558Srgrimes ep2 = exphead; 10051558Srgrimes epp = &exphead; 10061558Srgrimes 10071558Srgrimes /* 10081558Srgrimes * Insert in the list in alphabetical order. 10091558Srgrimes */ 10101558Srgrimes while (ep2 && strcmp(ep2->ex_fsdir, ep->ex_fsdir) < 0) { 10111558Srgrimes epp = &ep2->ex_next; 10121558Srgrimes ep2 = ep2->ex_next; 10131558Srgrimes } 10141558Srgrimes if (ep2) 10151558Srgrimes ep->ex_next = ep2; 10161558Srgrimes *epp = ep; 10171558Srgrimes ep->ex_flag |= EX_LINKED; 10181558Srgrimes } 10191558Srgrimesnextline: 10201558Srgrimes if (dirhead) { 10211558Srgrimes free_dir(dirhead); 10221558Srgrimes dirhead = (struct dirlist *)NULL; 10231558Srgrimes } 10241558Srgrimes } 10251558Srgrimes fclose(exp_file); 10261558Srgrimes} 10271558Srgrimes 10281558Srgrimes/* 10291558Srgrimes * Allocate an export list element 10301558Srgrimes */ 10311558Srgrimesstruct exportlist * 10321558Srgrimesget_exp() 10331558Srgrimes{ 10341558Srgrimes struct exportlist *ep; 10351558Srgrimes 10361558Srgrimes ep = (struct exportlist *)malloc(sizeof (struct exportlist)); 10371558Srgrimes if (ep == (struct exportlist *)NULL) 10381558Srgrimes out_of_mem(); 103923681Speter memset(ep, 0, sizeof(struct exportlist)); 10401558Srgrimes return (ep); 10411558Srgrimes} 10421558Srgrimes 10431558Srgrimes/* 10441558Srgrimes * Allocate a group list element 10451558Srgrimes */ 10461558Srgrimesstruct grouplist * 10471558Srgrimesget_grp() 10481558Srgrimes{ 10491558Srgrimes struct grouplist *gp; 10501558Srgrimes 10511558Srgrimes gp = (struct grouplist *)malloc(sizeof (struct grouplist)); 10521558Srgrimes if (gp == (struct grouplist *)NULL) 10531558Srgrimes out_of_mem(); 105423681Speter memset(gp, 0, sizeof(struct grouplist)); 10551558Srgrimes return (gp); 10561558Srgrimes} 10571558Srgrimes 10581558Srgrimes/* 10591558Srgrimes * Clean up upon an error in get_exportlist(). 10601558Srgrimes */ 10611558Srgrimesvoid 10621558Srgrimesgetexp_err(ep, grp) 10631558Srgrimes struct exportlist *ep; 10641558Srgrimes struct grouplist *grp; 10651558Srgrimes{ 10661558Srgrimes struct grouplist *tgrp; 10671558Srgrimes 10681558Srgrimes syslog(LOG_ERR, "Bad exports list line %s", line); 10691558Srgrimes if (ep && (ep->ex_flag & EX_LINKED) == 0) 10701558Srgrimes free_exp(ep); 10711558Srgrimes while (grp) { 10721558Srgrimes tgrp = grp; 10731558Srgrimes grp = grp->gr_next; 10741558Srgrimes free_grp(tgrp); 10751558Srgrimes } 10761558Srgrimes} 10771558Srgrimes 10781558Srgrimes/* 10791558Srgrimes * Search the export list for a matching fs. 10801558Srgrimes */ 10811558Srgrimesstruct exportlist * 10821558Srgrimesex_search(fsid) 10831558Srgrimes fsid_t *fsid; 10841558Srgrimes{ 10851558Srgrimes struct exportlist *ep; 10861558Srgrimes 10871558Srgrimes ep = exphead; 10881558Srgrimes while (ep) { 10891558Srgrimes if (ep->ex_fs.val[0] == fsid->val[0] && 10901558Srgrimes ep->ex_fs.val[1] == fsid->val[1]) 10911558Srgrimes return (ep); 10921558Srgrimes ep = ep->ex_next; 10931558Srgrimes } 10941558Srgrimes return (ep); 10951558Srgrimes} 10961558Srgrimes 10971558Srgrimes/* 10981558Srgrimes * Add a directory path to the list. 10991558Srgrimes */ 11001558Srgrimeschar * 11011558Srgrimesadd_expdir(dpp, cp, len) 11021558Srgrimes struct dirlist **dpp; 11031558Srgrimes char *cp; 11041558Srgrimes int len; 11051558Srgrimes{ 11061558Srgrimes struct dirlist *dp; 11071558Srgrimes 11081558Srgrimes dp = (struct dirlist *)malloc(sizeof (struct dirlist) + len); 11091558Srgrimes dp->dp_left = *dpp; 11101558Srgrimes dp->dp_right = (struct dirlist *)NULL; 11111558Srgrimes dp->dp_flag = 0; 11121558Srgrimes dp->dp_hosts = (struct hostlist *)NULL; 11131558Srgrimes strcpy(dp->dp_dirp, cp); 11141558Srgrimes *dpp = dp; 11151558Srgrimes return (dp->dp_dirp); 11161558Srgrimes} 11171558Srgrimes 11181558Srgrimes/* 11191558Srgrimes * Hang the dir list element off the dirpath binary tree as required 11201558Srgrimes * and update the entry for host. 11211558Srgrimes */ 11221558Srgrimesvoid 11239336Sdfrhang_dirp(dp, grp, ep, flags) 11241558Srgrimes struct dirlist *dp; 11251558Srgrimes struct grouplist *grp; 11261558Srgrimes struct exportlist *ep; 11279336Sdfr int flags; 11281558Srgrimes{ 11291558Srgrimes struct hostlist *hp; 11301558Srgrimes struct dirlist *dp2; 11311558Srgrimes 11329336Sdfr if (flags & OP_ALLDIRS) { 11331558Srgrimes if (ep->ex_defdir) 11341558Srgrimes free((caddr_t)dp); 11351558Srgrimes else 11361558Srgrimes ep->ex_defdir = dp; 11379336Sdfr if (grp == (struct grouplist *)NULL) { 11381558Srgrimes ep->ex_defdir->dp_flag |= DP_DEFSET; 11399336Sdfr if (flags & OP_KERB) 11409336Sdfr ep->ex_defdir->dp_flag |= DP_KERB; 11419336Sdfr } else while (grp) { 11421558Srgrimes hp = get_ht(); 11439336Sdfr if (flags & OP_KERB) 11449336Sdfr hp->ht_flag |= DP_KERB; 11451558Srgrimes hp->ht_grp = grp; 11461558Srgrimes hp->ht_next = ep->ex_defdir->dp_hosts; 11471558Srgrimes ep->ex_defdir->dp_hosts = hp; 11481558Srgrimes grp = grp->gr_next; 11491558Srgrimes } 11501558Srgrimes } else { 11511558Srgrimes 11521558Srgrimes /* 11531558Srgrimes * Loop throught the directories adding them to the tree. 11541558Srgrimes */ 11551558Srgrimes while (dp) { 11561558Srgrimes dp2 = dp->dp_left; 11579336Sdfr add_dlist(&ep->ex_dirl, dp, grp, flags); 11581558Srgrimes dp = dp2; 11591558Srgrimes } 11601558Srgrimes } 11611558Srgrimes} 11621558Srgrimes 11631558Srgrimes/* 11641558Srgrimes * Traverse the binary tree either updating a node that is already there 11651558Srgrimes * for the new directory or adding the new node. 11661558Srgrimes */ 11671558Srgrimesvoid 11689336Sdfradd_dlist(dpp, newdp, grp, flags) 11691558Srgrimes struct dirlist **dpp; 11701558Srgrimes struct dirlist *newdp; 11711558Srgrimes struct grouplist *grp; 11729336Sdfr int flags; 11731558Srgrimes{ 11741558Srgrimes struct dirlist *dp; 11751558Srgrimes struct hostlist *hp; 11761558Srgrimes int cmp; 11771558Srgrimes 11781558Srgrimes dp = *dpp; 11791558Srgrimes if (dp) { 11801558Srgrimes cmp = strcmp(dp->dp_dirp, newdp->dp_dirp); 11811558Srgrimes if (cmp > 0) { 11829336Sdfr add_dlist(&dp->dp_left, newdp, grp, flags); 11831558Srgrimes return; 11841558Srgrimes } else if (cmp < 0) { 11859336Sdfr add_dlist(&dp->dp_right, newdp, grp, flags); 11861558Srgrimes return; 11871558Srgrimes } else 11881558Srgrimes free((caddr_t)newdp); 11891558Srgrimes } else { 11901558Srgrimes dp = newdp; 11911558Srgrimes dp->dp_left = (struct dirlist *)NULL; 11921558Srgrimes *dpp = dp; 11931558Srgrimes } 11941558Srgrimes if (grp) { 11951558Srgrimes 11961558Srgrimes /* 11971558Srgrimes * Hang all of the host(s) off of the directory point. 11981558Srgrimes */ 11991558Srgrimes do { 12001558Srgrimes hp = get_ht(); 12019336Sdfr if (flags & OP_KERB) 12029336Sdfr hp->ht_flag |= DP_KERB; 12031558Srgrimes hp->ht_grp = grp; 12041558Srgrimes hp->ht_next = dp->dp_hosts; 12051558Srgrimes dp->dp_hosts = hp; 12061558Srgrimes grp = grp->gr_next; 12071558Srgrimes } while (grp); 12089336Sdfr } else { 12091558Srgrimes dp->dp_flag |= DP_DEFSET; 12109336Sdfr if (flags & OP_KERB) 12119336Sdfr dp->dp_flag |= DP_KERB; 12129336Sdfr } 12131558Srgrimes} 12141558Srgrimes 12151558Srgrimes/* 12161558Srgrimes * Search for a dirpath on the export point. 12171558Srgrimes */ 12181558Srgrimesstruct dirlist * 12191558Srgrimesdirp_search(dp, dirpath) 12201558Srgrimes struct dirlist *dp; 12211558Srgrimes char *dirpath; 12221558Srgrimes{ 12231558Srgrimes int cmp; 12241558Srgrimes 12251558Srgrimes if (dp) { 12261558Srgrimes cmp = strcmp(dp->dp_dirp, dirpath); 12271558Srgrimes if (cmp > 0) 12281558Srgrimes return (dirp_search(dp->dp_left, dirpath)); 12291558Srgrimes else if (cmp < 0) 12301558Srgrimes return (dirp_search(dp->dp_right, dirpath)); 12311558Srgrimes else 12321558Srgrimes return (dp); 12331558Srgrimes } 12341558Srgrimes return (dp); 12351558Srgrimes} 12361558Srgrimes 12371558Srgrimes/* 12381558Srgrimes * Scan for a host match in a directory tree. 12391558Srgrimes */ 12401558Srgrimesint 12419336Sdfrchk_host(dp, saddr, defsetp, hostsetp) 12421558Srgrimes struct dirlist *dp; 12431558Srgrimes u_long saddr; 12441558Srgrimes int *defsetp; 12459336Sdfr int *hostsetp; 12461558Srgrimes{ 12471558Srgrimes struct hostlist *hp; 12481558Srgrimes struct grouplist *grp; 12491558Srgrimes u_long **addrp; 12501558Srgrimes 12511558Srgrimes if (dp) { 12521558Srgrimes if (dp->dp_flag & DP_DEFSET) 12539336Sdfr *defsetp = dp->dp_flag; 12541558Srgrimes hp = dp->dp_hosts; 12551558Srgrimes while (hp) { 12561558Srgrimes grp = hp->ht_grp; 12571558Srgrimes switch (grp->gr_type) { 12581558Srgrimes case GT_HOST: 12591558Srgrimes addrp = (u_long **) 12601558Srgrimes grp->gr_ptr.gt_hostent->h_addr_list; 12611558Srgrimes while (*addrp) { 12629336Sdfr if (**addrp == saddr) { 12639336Sdfr *hostsetp = (hp->ht_flag | DP_HOSTSET); 12641558Srgrimes return (1); 12659336Sdfr } 12661558Srgrimes addrp++; 12671558Srgrimes } 12681558Srgrimes break; 12691558Srgrimes case GT_NET: 12701558Srgrimes if ((saddr & grp->gr_ptr.gt_net.nt_mask) == 12719336Sdfr grp->gr_ptr.gt_net.nt_net) { 12729336Sdfr *hostsetp = (hp->ht_flag | DP_HOSTSET); 12731558Srgrimes return (1); 12749336Sdfr } 12751558Srgrimes break; 12761558Srgrimes }; 12771558Srgrimes hp = hp->ht_next; 12781558Srgrimes } 12791558Srgrimes } 12801558Srgrimes return (0); 12811558Srgrimes} 12821558Srgrimes 12831558Srgrimes/* 12841558Srgrimes * Scan tree for a host that matches the address. 12851558Srgrimes */ 12861558Srgrimesint 12871558Srgrimesscan_tree(dp, saddr) 12881558Srgrimes struct dirlist *dp; 12891558Srgrimes u_long saddr; 12901558Srgrimes{ 12919336Sdfr int defset, hostset; 12921558Srgrimes 12931558Srgrimes if (dp) { 12941558Srgrimes if (scan_tree(dp->dp_left, saddr)) 12951558Srgrimes return (1); 12969336Sdfr if (chk_host(dp, saddr, &defset, &hostset)) 12971558Srgrimes return (1); 12981558Srgrimes if (scan_tree(dp->dp_right, saddr)) 12991558Srgrimes return (1); 13001558Srgrimes } 13011558Srgrimes return (0); 13021558Srgrimes} 13031558Srgrimes 13041558Srgrimes/* 13051558Srgrimes * Traverse the dirlist tree and free it up. 13061558Srgrimes */ 13071558Srgrimesvoid 13081558Srgrimesfree_dir(dp) 13091558Srgrimes struct dirlist *dp; 13101558Srgrimes{ 13111558Srgrimes 13121558Srgrimes if (dp) { 13131558Srgrimes free_dir(dp->dp_left); 13141558Srgrimes free_dir(dp->dp_right); 13151558Srgrimes free_host(dp->dp_hosts); 13161558Srgrimes free((caddr_t)dp); 13171558Srgrimes } 13181558Srgrimes} 13191558Srgrimes 13201558Srgrimes/* 13211558Srgrimes * Parse the option string and update fields. 13221558Srgrimes * Option arguments may either be -<option>=<value> or 13231558Srgrimes * -<option> <value> 13241558Srgrimes */ 13251558Srgrimesint 13261558Srgrimesdo_opt(cpp, endcpp, ep, grp, has_hostp, exflagsp, cr) 13271558Srgrimes char **cpp, **endcpp; 13281558Srgrimes struct exportlist *ep; 13291558Srgrimes struct grouplist *grp; 13301558Srgrimes int *has_hostp; 13311558Srgrimes int *exflagsp; 13321558Srgrimes struct ucred *cr; 13331558Srgrimes{ 13341558Srgrimes char *cpoptarg, *cpoptend; 13351558Srgrimes char *cp, *endcp, *cpopt, savedc, savedc2; 13361558Srgrimes int allflag, usedarg; 13371558Srgrimes 13381558Srgrimes cpopt = *cpp; 13391558Srgrimes cpopt++; 13401558Srgrimes cp = *endcpp; 13411558Srgrimes savedc = *cp; 13421558Srgrimes *cp = '\0'; 13431558Srgrimes while (cpopt && *cpopt) { 13441558Srgrimes allflag = 1; 13451558Srgrimes usedarg = -2; 134623681Speter if (cpoptend = strchr(cpopt, ',')) { 13471558Srgrimes *cpoptend++ = '\0'; 134823681Speter if (cpoptarg = strchr(cpopt, '=')) 13491558Srgrimes *cpoptarg++ = '\0'; 13501558Srgrimes } else { 135123681Speter if (cpoptarg = strchr(cpopt, '=')) 13521558Srgrimes *cpoptarg++ = '\0'; 13531558Srgrimes else { 13541558Srgrimes *cp = savedc; 13551558Srgrimes nextfield(&cp, &endcp); 13561558Srgrimes **endcpp = '\0'; 13571558Srgrimes if (endcp > cp && *cp != '-') { 13581558Srgrimes cpoptarg = cp; 13591558Srgrimes savedc2 = *endcp; 13601558Srgrimes *endcp = '\0'; 13611558Srgrimes usedarg = 0; 13621558Srgrimes } 13631558Srgrimes } 13641558Srgrimes } 13651558Srgrimes if (!strcmp(cpopt, "ro") || !strcmp(cpopt, "o")) { 13661558Srgrimes *exflagsp |= MNT_EXRDONLY; 13671558Srgrimes } else if (cpoptarg && (!strcmp(cpopt, "maproot") || 13681558Srgrimes !(allflag = strcmp(cpopt, "mapall")) || 13691558Srgrimes !strcmp(cpopt, "root") || !strcmp(cpopt, "r"))) { 13701558Srgrimes usedarg++; 13711558Srgrimes parsecred(cpoptarg, cr); 13721558Srgrimes if (allflag == 0) { 13731558Srgrimes *exflagsp |= MNT_EXPORTANON; 13741558Srgrimes opt_flags |= OP_MAPALL; 13751558Srgrimes } else 13761558Srgrimes opt_flags |= OP_MAPROOT; 13771558Srgrimes } else if (!strcmp(cpopt, "kerb") || !strcmp(cpopt, "k")) { 13781558Srgrimes *exflagsp |= MNT_EXKERB; 13791558Srgrimes opt_flags |= OP_KERB; 13801558Srgrimes } else if (cpoptarg && (!strcmp(cpopt, "mask") || 13811558Srgrimes !strcmp(cpopt, "m"))) { 13821558Srgrimes if (get_net(cpoptarg, &grp->gr_ptr.gt_net, 1)) { 13831558Srgrimes syslog(LOG_ERR, "Bad mask: %s", cpoptarg); 13841558Srgrimes return (1); 13851558Srgrimes } 13861558Srgrimes usedarg++; 13871558Srgrimes opt_flags |= OP_MASK; 13881558Srgrimes } else if (cpoptarg && (!strcmp(cpopt, "network") || 13891558Srgrimes !strcmp(cpopt, "n"))) { 13901558Srgrimes if (grp->gr_type != GT_NULL) { 13911558Srgrimes syslog(LOG_ERR, "Network/host conflict"); 13921558Srgrimes return (1); 13931558Srgrimes } else if (get_net(cpoptarg, &grp->gr_ptr.gt_net, 0)) { 13941558Srgrimes syslog(LOG_ERR, "Bad net: %s", cpoptarg); 13951558Srgrimes return (1); 13961558Srgrimes } 13971558Srgrimes grp->gr_type = GT_NET; 13981558Srgrimes *has_hostp = 1; 13991558Srgrimes usedarg++; 14001558Srgrimes opt_flags |= OP_NET; 14011558Srgrimes } else if (!strcmp(cpopt, "alldirs")) { 14021558Srgrimes opt_flags |= OP_ALLDIRS; 140327447Sdfr } else if (!strcmp(cpopt, "public")) { 140427447Sdfr *exflagsp |= MNT_EXPUBLIC; 140527447Sdfr } else if (!strcmp(cpopt, "webnfs")) { 140627447Sdfr *exflagsp |= (MNT_EXPUBLIC|MNT_EXRDONLY|MNT_EXPORTANON); 140727447Sdfr opt_flags |= OP_MAPALL; 140827447Sdfr } else if (cpoptarg && !strcmp(cpopt, "index")) { 140927447Sdfr ep->ex_indexfile = strdup(cpoptarg); 14101558Srgrimes#ifdef ISO 14111558Srgrimes } else if (cpoptarg && !strcmp(cpopt, "iso")) { 14121558Srgrimes if (get_isoaddr(cpoptarg, grp)) { 14131558Srgrimes syslog(LOG_ERR, "Bad iso addr: %s", cpoptarg); 14141558Srgrimes return (1); 14151558Srgrimes } 14161558Srgrimes *has_hostp = 1; 14171558Srgrimes usedarg++; 14181558Srgrimes opt_flags |= OP_ISO; 14191558Srgrimes#endif /* ISO */ 14201558Srgrimes } else { 14211558Srgrimes syslog(LOG_ERR, "Bad opt %s", cpopt); 14221558Srgrimes return (1); 14231558Srgrimes } 14241558Srgrimes if (usedarg >= 0) { 14251558Srgrimes *endcp = savedc2; 14261558Srgrimes **endcpp = savedc; 14271558Srgrimes if (usedarg > 0) { 14281558Srgrimes *cpp = cp; 14291558Srgrimes *endcpp = endcp; 14301558Srgrimes } 14311558Srgrimes return (0); 14321558Srgrimes } 14331558Srgrimes cpopt = cpoptend; 14341558Srgrimes } 14351558Srgrimes **endcpp = savedc; 14361558Srgrimes return (0); 14371558Srgrimes} 14381558Srgrimes 14391558Srgrimes/* 14401558Srgrimes * Translate a character string to the corresponding list of network 14411558Srgrimes * addresses for a hostname. 14421558Srgrimes */ 14431558Srgrimesint 14447401Swpaulget_host(cp, grp, tgrp) 14451558Srgrimes char *cp; 14461558Srgrimes struct grouplist *grp; 14477401Swpaul struct grouplist *tgrp; 14481558Srgrimes{ 14497401Swpaul struct grouplist *checkgrp; 14501558Srgrimes struct hostent *hp, *nhp; 14511558Srgrimes char **addrp, **naddrp; 14521558Srgrimes struct hostent t_host; 14531558Srgrimes int i; 14541558Srgrimes u_long saddr; 14551558Srgrimes char *aptr[2]; 14561558Srgrimes 14571558Srgrimes if (grp->gr_type != GT_NULL) 14581558Srgrimes return (1); 14591558Srgrimes if ((hp = gethostbyname(cp)) == NULL) { 14601558Srgrimes if (isdigit(*cp)) { 14611558Srgrimes saddr = inet_addr(cp); 14621558Srgrimes if (saddr == -1) { 14639336Sdfr syslog(LOG_ERR, "Inet_addr failed for %s", cp); 14641558Srgrimes return (1); 14651558Srgrimes } 14661558Srgrimes if ((hp = gethostbyaddr((caddr_t)&saddr, sizeof (saddr), 14671558Srgrimes AF_INET)) == NULL) { 14681558Srgrimes hp = &t_host; 14691558Srgrimes hp->h_name = cp; 14701558Srgrimes hp->h_addrtype = AF_INET; 14711558Srgrimes hp->h_length = sizeof (u_long); 14721558Srgrimes hp->h_addr_list = aptr; 14731558Srgrimes aptr[0] = (char *)&saddr; 14741558Srgrimes aptr[1] = (char *)NULL; 14751558Srgrimes } 14761558Srgrimes } else { 14779336Sdfr syslog(LOG_ERR, "Gethostbyname failed for %s", cp); 14781558Srgrimes return (1); 14791558Srgrimes } 14801558Srgrimes } 14817401Swpaul /* 14827401Swpaul * Sanity check: make sure we don't already have an entry 14837401Swpaul * for this host in the grouplist. 14847401Swpaul */ 14857401Swpaul checkgrp = tgrp; 14867401Swpaul while (checkgrp) { 148717887Swpaul if (checkgrp->gr_type == GT_HOST && 148817887Swpaul checkgrp->gr_ptr.gt_hostent != NULL && 14897401Swpaul !strcmp(checkgrp->gr_ptr.gt_hostent->h_name, hp->h_name)) { 14907401Swpaul grp->gr_type = GT_IGNORE; 14917401Swpaul return(0); 14927401Swpaul } 14937401Swpaul checkgrp = checkgrp->gr_next; 14947401Swpaul } 14957401Swpaul 14961558Srgrimes grp->gr_type = GT_HOST; 14971558Srgrimes nhp = grp->gr_ptr.gt_hostent = (struct hostent *) 14981558Srgrimes malloc(sizeof(struct hostent)); 14991558Srgrimes if (nhp == (struct hostent *)NULL) 15001558Srgrimes out_of_mem(); 150123681Speter memmove(nhp, hp, sizeof(struct hostent)); 15021558Srgrimes i = strlen(hp->h_name)+1; 15031558Srgrimes nhp->h_name = (char *)malloc(i); 15041558Srgrimes if (nhp->h_name == (char *)NULL) 15051558Srgrimes out_of_mem(); 150623681Speter memmove(nhp->h_name, hp->h_name, i); 15071558Srgrimes addrp = hp->h_addr_list; 15081558Srgrimes i = 1; 15091558Srgrimes while (*addrp++) 15101558Srgrimes i++; 15111558Srgrimes naddrp = nhp->h_addr_list = (char **) 15121558Srgrimes malloc(i*sizeof(char *)); 15131558Srgrimes if (naddrp == (char **)NULL) 15141558Srgrimes out_of_mem(); 15151558Srgrimes addrp = hp->h_addr_list; 15161558Srgrimes while (*addrp) { 15171558Srgrimes *naddrp = (char *) 15181558Srgrimes malloc(hp->h_length); 15191558Srgrimes if (*naddrp == (char *)NULL) 15201558Srgrimes out_of_mem(); 152123681Speter memmove(*naddrp, *addrp, hp->h_length); 15221558Srgrimes addrp++; 15231558Srgrimes naddrp++; 15241558Srgrimes } 15251558Srgrimes *naddrp = (char *)NULL; 15261558Srgrimes if (debug) 15271558Srgrimes fprintf(stderr, "got host %s\n", hp->h_name); 15281558Srgrimes return (0); 15291558Srgrimes} 15301558Srgrimes 15311558Srgrimes/* 15321558Srgrimes * Free up an exports list component 15331558Srgrimes */ 15341558Srgrimesvoid 15351558Srgrimesfree_exp(ep) 15361558Srgrimes struct exportlist *ep; 15371558Srgrimes{ 15381558Srgrimes 15391558Srgrimes if (ep->ex_defdir) { 15401558Srgrimes free_host(ep->ex_defdir->dp_hosts); 15411558Srgrimes free((caddr_t)ep->ex_defdir); 15421558Srgrimes } 15431558Srgrimes if (ep->ex_fsdir) 15441558Srgrimes free(ep->ex_fsdir); 154527447Sdfr if (ep->ex_indexfile) 154627447Sdfr free(ep->ex_indexfile); 15471558Srgrimes free_dir(ep->ex_dirl); 15481558Srgrimes free((caddr_t)ep); 15491558Srgrimes} 15501558Srgrimes 15511558Srgrimes/* 15521558Srgrimes * Free hosts. 15531558Srgrimes */ 15541558Srgrimesvoid 15551558Srgrimesfree_host(hp) 15561558Srgrimes struct hostlist *hp; 15571558Srgrimes{ 15581558Srgrimes struct hostlist *hp2; 15591558Srgrimes 15601558Srgrimes while (hp) { 15611558Srgrimes hp2 = hp; 15621558Srgrimes hp = hp->ht_next; 15631558Srgrimes free((caddr_t)hp2); 15641558Srgrimes } 15651558Srgrimes} 15661558Srgrimes 15671558Srgrimesstruct hostlist * 15681558Srgrimesget_ht() 15691558Srgrimes{ 15701558Srgrimes struct hostlist *hp; 15711558Srgrimes 15721558Srgrimes hp = (struct hostlist *)malloc(sizeof (struct hostlist)); 15731558Srgrimes if (hp == (struct hostlist *)NULL) 15741558Srgrimes out_of_mem(); 15751558Srgrimes hp->ht_next = (struct hostlist *)NULL; 15769336Sdfr hp->ht_flag = 0; 15771558Srgrimes return (hp); 15781558Srgrimes} 15791558Srgrimes 15801558Srgrimes#ifdef ISO 15811558Srgrimes/* 15821558Srgrimes * Translate an iso address. 15831558Srgrimes */ 15841558Srgrimesget_isoaddr(cp, grp) 15851558Srgrimes char *cp; 15861558Srgrimes struct grouplist *grp; 15871558Srgrimes{ 15881558Srgrimes struct iso_addr *isop; 15891558Srgrimes struct sockaddr_iso *isoaddr; 15901558Srgrimes 15911558Srgrimes if (grp->gr_type != GT_NULL) 15921558Srgrimes return (1); 15931558Srgrimes if ((isop = iso_addr(cp)) == NULL) { 15941558Srgrimes syslog(LOG_ERR, 15951558Srgrimes "iso_addr failed, ignored"); 15961558Srgrimes return (1); 15971558Srgrimes } 15981558Srgrimes isoaddr = (struct sockaddr_iso *) 15991558Srgrimes malloc(sizeof (struct sockaddr_iso)); 16001558Srgrimes if (isoaddr == (struct sockaddr_iso *)NULL) 16011558Srgrimes out_of_mem(); 160223681Speter memset(isoaddr, 0, sizeof(struct sockaddr_iso)); 160323681Speter memmove(&isoaddr->siso_addr, isop, sizeof(struct iso_addr)); 160423681Speter isoaddr->siso_len = sizeof(struct sockaddr_iso); 16051558Srgrimes isoaddr->siso_family = AF_ISO; 16061558Srgrimes grp->gr_type = GT_ISO; 16071558Srgrimes grp->gr_ptr.gt_isoaddr = isoaddr; 16081558Srgrimes return (0); 16091558Srgrimes} 16101558Srgrimes#endif /* ISO */ 16111558Srgrimes 16121558Srgrimes/* 16131558Srgrimes * Out of memory, fatal 16141558Srgrimes */ 16151558Srgrimesvoid 16161558Srgrimesout_of_mem() 16171558Srgrimes{ 16181558Srgrimes 16191558Srgrimes syslog(LOG_ERR, "Out of memory"); 16201558Srgrimes exit(2); 16211558Srgrimes} 16221558Srgrimes 16231558Srgrimes/* 16241558Srgrimes * Do the mount syscall with the update flag to push the export info into 16251558Srgrimes * the kernel. 16261558Srgrimes */ 16271558Srgrimesint 16281558Srgrimesdo_mount(ep, grp, exflags, anoncrp, dirp, dirplen, fsb) 16291558Srgrimes struct exportlist *ep; 16301558Srgrimes struct grouplist *grp; 16311558Srgrimes int exflags; 16321558Srgrimes struct ucred *anoncrp; 16331558Srgrimes char *dirp; 16341558Srgrimes int dirplen; 16351558Srgrimes struct statfs *fsb; 16361558Srgrimes{ 16371558Srgrimes char *cp = (char *)NULL; 16381558Srgrimes u_long **addrp; 16391558Srgrimes int done; 16401558Srgrimes char savedc = '\0'; 16411558Srgrimes struct sockaddr_in sin, imask; 16421558Srgrimes union { 16431558Srgrimes struct ufs_args ua; 16441558Srgrimes struct iso_args ia; 16451558Srgrimes struct mfs_args ma; 16469336Sdfr#ifdef __NetBSD__ 16479336Sdfr struct msdosfs_args da; 16489336Sdfr#endif 16491558Srgrimes } args; 16501558Srgrimes u_long net; 16511558Srgrimes 16521558Srgrimes args.ua.fspec = 0; 16531558Srgrimes args.ua.export.ex_flags = exflags; 16541558Srgrimes args.ua.export.ex_anon = *anoncrp; 165527447Sdfr args.ua.export.ex_indexfile = ep->ex_indexfile; 165623681Speter memset(&sin, 0, sizeof(sin)); 165723681Speter memset(&imask, 0, sizeof(imask)); 16581558Srgrimes sin.sin_family = AF_INET; 16591558Srgrimes sin.sin_len = sizeof(sin); 16601558Srgrimes imask.sin_family = AF_INET; 16611558Srgrimes imask.sin_len = sizeof(sin); 16621558Srgrimes if (grp->gr_type == GT_HOST) 16631558Srgrimes addrp = (u_long **)grp->gr_ptr.gt_hostent->h_addr_list; 16641558Srgrimes else 16651558Srgrimes addrp = (u_long **)NULL; 16661558Srgrimes done = FALSE; 16671558Srgrimes while (!done) { 16681558Srgrimes switch (grp->gr_type) { 16691558Srgrimes case GT_HOST: 16701558Srgrimes if (addrp) { 16711558Srgrimes sin.sin_addr.s_addr = **addrp; 16721558Srgrimes args.ua.export.ex_addrlen = sizeof(sin); 16731558Srgrimes } else 16741558Srgrimes args.ua.export.ex_addrlen = 0; 16751558Srgrimes args.ua.export.ex_addr = (struct sockaddr *)&sin; 16761558Srgrimes args.ua.export.ex_masklen = 0; 16771558Srgrimes break; 16781558Srgrimes case GT_NET: 16791558Srgrimes if (grp->gr_ptr.gt_net.nt_mask) 16801558Srgrimes imask.sin_addr.s_addr = grp->gr_ptr.gt_net.nt_mask; 16811558Srgrimes else { 16821558Srgrimes net = ntohl(grp->gr_ptr.gt_net.nt_net); 16831558Srgrimes if (IN_CLASSA(net)) 16841558Srgrimes imask.sin_addr.s_addr = inet_addr("255.0.0.0"); 16851558Srgrimes else if (IN_CLASSB(net)) 16861558Srgrimes imask.sin_addr.s_addr = 16871558Srgrimes inet_addr("255.255.0.0"); 16881558Srgrimes else 16891558Srgrimes imask.sin_addr.s_addr = 16901558Srgrimes inet_addr("255.255.255.0"); 16911558Srgrimes grp->gr_ptr.gt_net.nt_mask = imask.sin_addr.s_addr; 16921558Srgrimes } 16931558Srgrimes sin.sin_addr.s_addr = grp->gr_ptr.gt_net.nt_net; 16941558Srgrimes args.ua.export.ex_addr = (struct sockaddr *)&sin; 16951558Srgrimes args.ua.export.ex_addrlen = sizeof (sin); 16961558Srgrimes args.ua.export.ex_mask = (struct sockaddr *)&imask; 16971558Srgrimes args.ua.export.ex_masklen = sizeof (imask); 16981558Srgrimes break; 16991558Srgrimes#ifdef ISO 17001558Srgrimes case GT_ISO: 17011558Srgrimes args.ua.export.ex_addr = 17021558Srgrimes (struct sockaddr *)grp->gr_ptr.gt_isoaddr; 17031558Srgrimes args.ua.export.ex_addrlen = 17041558Srgrimes sizeof(struct sockaddr_iso); 17051558Srgrimes args.ua.export.ex_masklen = 0; 17061558Srgrimes break; 17071558Srgrimes#endif /* ISO */ 17087401Swpaul case GT_IGNORE: 17097401Swpaul return(0); 17107401Swpaul break; 17111558Srgrimes default: 17121558Srgrimes syslog(LOG_ERR, "Bad grouptype"); 17131558Srgrimes if (cp) 17141558Srgrimes *cp = savedc; 17151558Srgrimes return (1); 17161558Srgrimes }; 17171558Srgrimes 17181558Srgrimes /* 17191558Srgrimes * XXX: 17201558Srgrimes * Maybe I should just use the fsb->f_mntonname path instead 17211558Srgrimes * of looping back up the dirp to the mount point?? 17221558Srgrimes * Also, needs to know how to export all types of local 172323681Speter * exportable file systems and not just "ufs". 17241558Srgrimes */ 17259336Sdfr while (mount(fsb->f_fstypename, dirp, 17261558Srgrimes fsb->f_flags | MNT_UPDATE, (caddr_t)&args) < 0) { 17271558Srgrimes if (cp) 17281558Srgrimes *cp-- = savedc; 17291558Srgrimes else 17301558Srgrimes cp = dirp + dirplen - 1; 17311558Srgrimes if (errno == EPERM) { 17321558Srgrimes syslog(LOG_ERR, 17331558Srgrimes "Can't change attributes for %s.\n", dirp); 17341558Srgrimes return (1); 17351558Srgrimes } 17361558Srgrimes if (opt_flags & OP_ALLDIRS) { 17374895Swollman syslog(LOG_ERR, "Could not remount %s: %m", 17384895Swollman dirp); 17391558Srgrimes return (1); 17401558Srgrimes } 17411558Srgrimes /* back up over the last component */ 17421558Srgrimes while (*cp == '/' && cp > dirp) 17431558Srgrimes cp--; 17441558Srgrimes while (*(cp - 1) != '/' && cp > dirp) 17451558Srgrimes cp--; 17461558Srgrimes if (cp == dirp) { 17471558Srgrimes if (debug) 17481558Srgrimes fprintf(stderr,"mnt unsucc\n"); 17491558Srgrimes syslog(LOG_ERR, "Can't export %s", dirp); 17501558Srgrimes return (1); 17511558Srgrimes } 17521558Srgrimes savedc = *cp; 17531558Srgrimes *cp = '\0'; 17541558Srgrimes } 17551558Srgrimes if (addrp) { 17561558Srgrimes ++addrp; 17571558Srgrimes if (*addrp == (u_long *)NULL) 17581558Srgrimes done = TRUE; 17591558Srgrimes } else 17601558Srgrimes done = TRUE; 17611558Srgrimes } 17621558Srgrimes if (cp) 17631558Srgrimes *cp = savedc; 17641558Srgrimes return (0); 17651558Srgrimes} 17661558Srgrimes 17671558Srgrimes/* 17681558Srgrimes * Translate a net address. 17691558Srgrimes */ 17701558Srgrimesint 17711558Srgrimesget_net(cp, net, maskflg) 17721558Srgrimes char *cp; 17731558Srgrimes struct netmsk *net; 17741558Srgrimes int maskflg; 17751558Srgrimes{ 17761558Srgrimes struct netent *np; 17771558Srgrimes long netaddr; 17781558Srgrimes struct in_addr inetaddr, inetaddr2; 17791558Srgrimes char *name; 17801558Srgrimes 178125318Spst if (isdigit(*cp) && ((netaddr = inet_network(cp)) != -1)) { 17821558Srgrimes inetaddr = inet_makeaddr(netaddr, 0); 17831558Srgrimes /* 17841558Srgrimes * Due to arbritrary subnet masks, you don't know how many 17851558Srgrimes * bits to shift the address to make it into a network, 17861558Srgrimes * however you do know how to make a network address into 17871558Srgrimes * a host with host == 0 and then compare them. 17881558Srgrimes * (What a pest) 17891558Srgrimes */ 17901558Srgrimes if (!maskflg) { 17911558Srgrimes setnetent(0); 17921558Srgrimes while (np = getnetent()) { 17931558Srgrimes inetaddr2 = inet_makeaddr(np->n_net, 0); 17941558Srgrimes if (inetaddr2.s_addr == inetaddr.s_addr) 17951558Srgrimes break; 17961558Srgrimes } 17971558Srgrimes endnetent(); 17981558Srgrimes } 179925318Spst } else if ((np = getnetbyname(cp)) != NULL) { 180025318Spst inetaddr = inet_makeaddr(np->n_net, 0); 18011558Srgrimes } else 18021558Srgrimes return (1); 180325318Spst 18041558Srgrimes if (maskflg) 18051558Srgrimes net->nt_mask = inetaddr.s_addr; 18061558Srgrimes else { 18071558Srgrimes if (np) 18081558Srgrimes name = np->n_name; 18091558Srgrimes else 18101558Srgrimes name = inet_ntoa(inetaddr); 18111558Srgrimes net->nt_name = (char *)malloc(strlen(name) + 1); 18121558Srgrimes if (net->nt_name == (char *)NULL) 18131558Srgrimes out_of_mem(); 18141558Srgrimes strcpy(net->nt_name, name); 18151558Srgrimes net->nt_net = inetaddr.s_addr; 18161558Srgrimes } 18171558Srgrimes return (0); 18181558Srgrimes} 18191558Srgrimes 18201558Srgrimes/* 18211558Srgrimes * Parse out the next white space separated field 18221558Srgrimes */ 18231558Srgrimesvoid 18241558Srgrimesnextfield(cp, endcp) 18251558Srgrimes char **cp; 18261558Srgrimes char **endcp; 18271558Srgrimes{ 18281558Srgrimes char *p; 18291558Srgrimes 18301558Srgrimes p = *cp; 18311558Srgrimes while (*p == ' ' || *p == '\t') 18321558Srgrimes p++; 18331558Srgrimes if (*p == '\n' || *p == '\0') 18341558Srgrimes *cp = *endcp = p; 18351558Srgrimes else { 18361558Srgrimes *cp = p++; 18371558Srgrimes while (*p != ' ' && *p != '\t' && *p != '\n' && *p != '\0') 18381558Srgrimes p++; 18391558Srgrimes *endcp = p; 18401558Srgrimes } 18411558Srgrimes} 18421558Srgrimes 18431558Srgrimes/* 18441558Srgrimes * Get an exports file line. Skip over blank lines and handle line 18451558Srgrimes * continuations. 18461558Srgrimes */ 18471558Srgrimesint 18481558Srgrimesget_line() 18491558Srgrimes{ 18501558Srgrimes char *p, *cp; 18511558Srgrimes int len; 18521558Srgrimes int totlen, cont_line; 18531558Srgrimes 18541558Srgrimes /* 18551558Srgrimes * Loop around ignoring blank lines and getting all continuation lines. 18561558Srgrimes */ 18571558Srgrimes p = line; 18581558Srgrimes totlen = 0; 18591558Srgrimes do { 18601558Srgrimes if (fgets(p, LINESIZ - totlen, exp_file) == NULL) 18611558Srgrimes return (0); 18621558Srgrimes len = strlen(p); 18631558Srgrimes cp = p + len - 1; 18641558Srgrimes cont_line = 0; 18651558Srgrimes while (cp >= p && 18661558Srgrimes (*cp == ' ' || *cp == '\t' || *cp == '\n' || *cp == '\\')) { 18671558Srgrimes if (*cp == '\\') 18681558Srgrimes cont_line = 1; 18691558Srgrimes cp--; 18701558Srgrimes len--; 18711558Srgrimes } 18721558Srgrimes *++cp = '\0'; 18731558Srgrimes if (len > 0) { 18741558Srgrimes totlen += len; 18751558Srgrimes if (totlen >= LINESIZ) { 18761558Srgrimes syslog(LOG_ERR, "Exports line too long"); 18771558Srgrimes exit(2); 18781558Srgrimes } 18791558Srgrimes p = cp; 18801558Srgrimes } 18811558Srgrimes } while (totlen == 0 || cont_line); 18821558Srgrimes return (1); 18831558Srgrimes} 18841558Srgrimes 18851558Srgrimes/* 18861558Srgrimes * Parse a description of a credential. 18871558Srgrimes */ 18881558Srgrimesvoid 18891558Srgrimesparsecred(namelist, cr) 18901558Srgrimes char *namelist; 18911558Srgrimes struct ucred *cr; 18921558Srgrimes{ 18931558Srgrimes char *name; 18941558Srgrimes int cnt; 18951558Srgrimes char *names; 18961558Srgrimes struct passwd *pw; 18971558Srgrimes struct group *gr; 18981558Srgrimes int ngroups, groups[NGROUPS + 1]; 18991558Srgrimes 19001558Srgrimes /* 19011558Srgrimes * Set up the unpriviledged user. 19021558Srgrimes */ 19031558Srgrimes cr->cr_ref = 1; 19041558Srgrimes cr->cr_uid = -2; 19051558Srgrimes cr->cr_groups[0] = -2; 19061558Srgrimes cr->cr_ngroups = 1; 19071558Srgrimes /* 19081558Srgrimes * Get the user's password table entry. 19091558Srgrimes */ 19101558Srgrimes names = strsep(&namelist, " \t\n"); 19111558Srgrimes name = strsep(&names, ":"); 19121558Srgrimes if (isdigit(*name) || *name == '-') 19131558Srgrimes pw = getpwuid(atoi(name)); 19141558Srgrimes else 19151558Srgrimes pw = getpwnam(name); 19161558Srgrimes /* 19171558Srgrimes * Credentials specified as those of a user. 19181558Srgrimes */ 19191558Srgrimes if (names == NULL) { 19201558Srgrimes if (pw == NULL) { 19211558Srgrimes syslog(LOG_ERR, "Unknown user: %s", name); 19221558Srgrimes return; 19231558Srgrimes } 19241558Srgrimes cr->cr_uid = pw->pw_uid; 19251558Srgrimes ngroups = NGROUPS + 1; 19261558Srgrimes if (getgrouplist(pw->pw_name, pw->pw_gid, groups, &ngroups)) 19271558Srgrimes syslog(LOG_ERR, "Too many groups"); 19281558Srgrimes /* 19291558Srgrimes * Convert from int's to gid_t's and compress out duplicate 19301558Srgrimes */ 19311558Srgrimes cr->cr_ngroups = ngroups - 1; 19321558Srgrimes cr->cr_groups[0] = groups[0]; 19331558Srgrimes for (cnt = 2; cnt < ngroups; cnt++) 19341558Srgrimes cr->cr_groups[cnt - 1] = groups[cnt]; 19351558Srgrimes return; 19361558Srgrimes } 19371558Srgrimes /* 19381558Srgrimes * Explicit credential specified as a colon separated list: 19391558Srgrimes * uid:gid:gid:... 19401558Srgrimes */ 19411558Srgrimes if (pw != NULL) 19421558Srgrimes cr->cr_uid = pw->pw_uid; 19431558Srgrimes else if (isdigit(*name) || *name == '-') 19441558Srgrimes cr->cr_uid = atoi(name); 19451558Srgrimes else { 19461558Srgrimes syslog(LOG_ERR, "Unknown user: %s", name); 19471558Srgrimes return; 19481558Srgrimes } 19491558Srgrimes cr->cr_ngroups = 0; 19501558Srgrimes while (names != NULL && *names != '\0' && cr->cr_ngroups < NGROUPS) { 19511558Srgrimes name = strsep(&names, ":"); 19521558Srgrimes if (isdigit(*name) || *name == '-') { 19531558Srgrimes cr->cr_groups[cr->cr_ngroups++] = atoi(name); 19541558Srgrimes } else { 19551558Srgrimes if ((gr = getgrnam(name)) == NULL) { 19561558Srgrimes syslog(LOG_ERR, "Unknown group: %s", name); 19571558Srgrimes continue; 19581558Srgrimes } 19591558Srgrimes cr->cr_groups[cr->cr_ngroups++] = gr->gr_gid; 19601558Srgrimes } 19611558Srgrimes } 19621558Srgrimes if (names != NULL && *names != '\0' && cr->cr_ngroups == NGROUPS) 19631558Srgrimes syslog(LOG_ERR, "Too many groups"); 19641558Srgrimes} 19651558Srgrimes 19661558Srgrimes#define STRSIZ (RPCMNT_NAMELEN+RPCMNT_PATHLEN+50) 19671558Srgrimes/* 19681558Srgrimes * Routines that maintain the remote mounttab 19691558Srgrimes */ 19701558Srgrimesvoid 19711558Srgrimesget_mountlist() 19721558Srgrimes{ 19731558Srgrimes struct mountlist *mlp, **mlpp; 197423681Speter char *host, *dirp, *cp; 19751558Srgrimes int len; 19761558Srgrimes char str[STRSIZ]; 19771558Srgrimes FILE *mlfile; 19781558Srgrimes 19791558Srgrimes if ((mlfile = fopen(_PATH_RMOUNTLIST, "r")) == NULL) { 19801558Srgrimes syslog(LOG_ERR, "Can't open %s", _PATH_RMOUNTLIST); 19811558Srgrimes return; 19821558Srgrimes } 19831558Srgrimes mlpp = &mlhead; 19841558Srgrimes while (fgets(str, STRSIZ, mlfile) != NULL) { 198523681Speter cp = str; 198623681Speter host = strsep(&cp, " \t\n"); 198723681Speter dirp = strsep(&cp, " \t\n"); 198823681Speter if (host == NULL || dirp == NULL) 19891558Srgrimes continue; 19901558Srgrimes mlp = (struct mountlist *)malloc(sizeof (*mlp)); 199123681Speter strncpy(mlp->ml_host, host, RPCMNT_NAMELEN); 199223681Speter mlp->ml_host[RPCMNT_NAMELEN] = '\0'; 199323681Speter strncpy(mlp->ml_dirp, dirp, RPCMNT_PATHLEN); 199423681Speter mlp->ml_dirp[RPCMNT_PATHLEN] = '\0'; 19951558Srgrimes mlp->ml_next = (struct mountlist *)NULL; 19961558Srgrimes *mlpp = mlp; 19971558Srgrimes mlpp = &mlp->ml_next; 19981558Srgrimes } 19991558Srgrimes fclose(mlfile); 20001558Srgrimes} 20011558Srgrimes 20021558Srgrimesvoid 20031558Srgrimesdel_mlist(hostp, dirp) 20041558Srgrimes char *hostp, *dirp; 20051558Srgrimes{ 20061558Srgrimes struct mountlist *mlp, **mlpp; 20071558Srgrimes struct mountlist *mlp2; 20081558Srgrimes FILE *mlfile; 20091558Srgrimes int fnd = 0; 20101558Srgrimes 20111558Srgrimes mlpp = &mlhead; 20121558Srgrimes mlp = mlhead; 20131558Srgrimes while (mlp) { 20141558Srgrimes if (!strcmp(mlp->ml_host, hostp) && 20151558Srgrimes (!dirp || !strcmp(mlp->ml_dirp, dirp))) { 20161558Srgrimes fnd = 1; 20171558Srgrimes mlp2 = mlp; 20181558Srgrimes *mlpp = mlp = mlp->ml_next; 20191558Srgrimes free((caddr_t)mlp2); 20201558Srgrimes } else { 20211558Srgrimes mlpp = &mlp->ml_next; 20221558Srgrimes mlp = mlp->ml_next; 20231558Srgrimes } 20241558Srgrimes } 20251558Srgrimes if (fnd) { 20261558Srgrimes if ((mlfile = fopen(_PATH_RMOUNTLIST, "w")) == NULL) { 20271558Srgrimes syslog(LOG_ERR,"Can't update %s", _PATH_RMOUNTLIST); 20281558Srgrimes return; 20291558Srgrimes } 20301558Srgrimes mlp = mlhead; 20311558Srgrimes while (mlp) { 20321558Srgrimes fprintf(mlfile, "%s %s\n", mlp->ml_host, mlp->ml_dirp); 20331558Srgrimes mlp = mlp->ml_next; 20341558Srgrimes } 20351558Srgrimes fclose(mlfile); 20361558Srgrimes } 20371558Srgrimes} 20381558Srgrimes 20391558Srgrimesvoid 20401558Srgrimesadd_mlist(hostp, dirp) 20411558Srgrimes char *hostp, *dirp; 20421558Srgrimes{ 20431558Srgrimes struct mountlist *mlp, **mlpp; 20441558Srgrimes FILE *mlfile; 20451558Srgrimes 20461558Srgrimes mlpp = &mlhead; 20471558Srgrimes mlp = mlhead; 20481558Srgrimes while (mlp) { 20491558Srgrimes if (!strcmp(mlp->ml_host, hostp) && !strcmp(mlp->ml_dirp, dirp)) 20501558Srgrimes return; 20511558Srgrimes mlpp = &mlp->ml_next; 20521558Srgrimes mlp = mlp->ml_next; 20531558Srgrimes } 20541558Srgrimes mlp = (struct mountlist *)malloc(sizeof (*mlp)); 20551558Srgrimes strncpy(mlp->ml_host, hostp, RPCMNT_NAMELEN); 20561558Srgrimes mlp->ml_host[RPCMNT_NAMELEN] = '\0'; 20571558Srgrimes strncpy(mlp->ml_dirp, dirp, RPCMNT_PATHLEN); 20581558Srgrimes mlp->ml_dirp[RPCMNT_PATHLEN] = '\0'; 20591558Srgrimes mlp->ml_next = (struct mountlist *)NULL; 20601558Srgrimes *mlpp = mlp; 20611558Srgrimes if ((mlfile = fopen(_PATH_RMOUNTLIST, "a")) == NULL) { 20621558Srgrimes syslog(LOG_ERR, "Can't update %s", _PATH_RMOUNTLIST); 20631558Srgrimes return; 20641558Srgrimes } 20651558Srgrimes fprintf(mlfile, "%s %s\n", mlp->ml_host, mlp->ml_dirp); 20661558Srgrimes fclose(mlfile); 20671558Srgrimes} 20681558Srgrimes 20691558Srgrimes/* 20701558Srgrimes * This function is called via. SIGTERM when the system is going down. 20711558Srgrimes * It sends a broadcast RPCMNT_UMNTALL. 20721558Srgrimes */ 20731558Srgrimesvoid 20741558Srgrimessend_umntall() 20751558Srgrimes{ 20761558Srgrimes (void) clnt_broadcast(RPCPROG_MNT, RPCMNT_VER1, RPCMNT_UMNTALL, 20771558Srgrimes xdr_void, (caddr_t)0, xdr_void, (caddr_t)0, umntall_each); 20781558Srgrimes exit(0); 20791558Srgrimes} 20801558Srgrimes 20811558Srgrimesint 20821558Srgrimesumntall_each(resultsp, raddr) 20831558Srgrimes caddr_t resultsp; 20841558Srgrimes struct sockaddr_in *raddr; 20851558Srgrimes{ 20861558Srgrimes return (1); 20871558Srgrimes} 20881558Srgrimes 20891558Srgrimes/* 20901558Srgrimes * Free up a group list. 20911558Srgrimes */ 20921558Srgrimesvoid 20931558Srgrimesfree_grp(grp) 20941558Srgrimes struct grouplist *grp; 20951558Srgrimes{ 20961558Srgrimes char **addrp; 20971558Srgrimes 20981558Srgrimes if (grp->gr_type == GT_HOST) { 20991558Srgrimes if (grp->gr_ptr.gt_hostent->h_name) { 21001558Srgrimes addrp = grp->gr_ptr.gt_hostent->h_addr_list; 21011558Srgrimes while (addrp && *addrp) 21021558Srgrimes free(*addrp++); 21031558Srgrimes free((caddr_t)grp->gr_ptr.gt_hostent->h_addr_list); 21041558Srgrimes free(grp->gr_ptr.gt_hostent->h_name); 21051558Srgrimes } 21061558Srgrimes free((caddr_t)grp->gr_ptr.gt_hostent); 21071558Srgrimes } else if (grp->gr_type == GT_NET) { 21081558Srgrimes if (grp->gr_ptr.gt_net.nt_name) 21091558Srgrimes free(grp->gr_ptr.gt_net.nt_name); 21101558Srgrimes } 21111558Srgrimes#ifdef ISO 21121558Srgrimes else if (grp->gr_type == GT_ISO) 21131558Srgrimes free((caddr_t)grp->gr_ptr.gt_isoaddr); 21141558Srgrimes#endif 21151558Srgrimes free((caddr_t)grp); 21161558Srgrimes} 21171558Srgrimes 21181558Srgrimes#ifdef DEBUG 21191558Srgrimesvoid 21201558SrgrimesSYSLOG(int pri, const char *fmt, ...) 21211558Srgrimes{ 21221558Srgrimes va_list ap; 21231558Srgrimes 21241558Srgrimes va_start(ap, fmt); 21251558Srgrimes vfprintf(stderr, fmt, ap); 21261558Srgrimes va_end(ap); 21271558Srgrimes} 21281558Srgrimes#endif /* DEBUG */ 21291558Srgrimes 21301558Srgrimes/* 21311558Srgrimes * Check options for consistency. 21321558Srgrimes */ 21331558Srgrimesint 21341558Srgrimescheck_options(dp) 21351558Srgrimes struct dirlist *dp; 21361558Srgrimes{ 21371558Srgrimes 21381558Srgrimes if (dp == (struct dirlist *)NULL) 21391558Srgrimes return (1); 21401558Srgrimes if ((opt_flags & (OP_MAPROOT | OP_MAPALL)) == (OP_MAPROOT | OP_MAPALL) || 21411558Srgrimes (opt_flags & (OP_MAPROOT | OP_KERB)) == (OP_MAPROOT | OP_KERB) || 21421558Srgrimes (opt_flags & (OP_MAPALL | OP_KERB)) == (OP_MAPALL | OP_KERB)) { 21431558Srgrimes syslog(LOG_ERR, "-mapall, -maproot and -kerb mutually exclusive"); 21441558Srgrimes return (1); 21451558Srgrimes } 21461558Srgrimes if ((opt_flags & OP_MASK) && (opt_flags & OP_NET) == 0) { 21471558Srgrimes syslog(LOG_ERR, "-mask requires -net"); 21481558Srgrimes return (1); 21491558Srgrimes } 21501558Srgrimes if ((opt_flags & (OP_NET | OP_ISO)) == (OP_NET | OP_ISO)) { 21511558Srgrimes syslog(LOG_ERR, "-net and -iso mutually exclusive"); 21521558Srgrimes return (1); 21531558Srgrimes } 21541558Srgrimes if ((opt_flags & OP_ALLDIRS) && dp->dp_left) { 21551558Srgrimes syslog(LOG_ERR, "-alldir has multiple directories"); 21561558Srgrimes return (1); 21571558Srgrimes } 21581558Srgrimes return (0); 21591558Srgrimes} 21601558Srgrimes 21611558Srgrimes/* 21621558Srgrimes * Check an absolute directory path for any symbolic links. Return true 21631558Srgrimes * if no symbolic links are found. 21641558Srgrimes */ 21651558Srgrimesint 21661558Srgrimescheck_dirpath(dirp) 21671558Srgrimes char *dirp; 21681558Srgrimes{ 21691558Srgrimes char *cp; 21701558Srgrimes int ret = 1; 21711558Srgrimes struct stat sb; 21721558Srgrimes 21731558Srgrimes cp = dirp + 1; 21741558Srgrimes while (*cp && ret) { 21751558Srgrimes if (*cp == '/') { 21761558Srgrimes *cp = '\0'; 21779336Sdfr if (lstat(dirp, &sb) < 0 || !S_ISDIR(sb.st_mode)) 21781558Srgrimes ret = 0; 21791558Srgrimes *cp = '/'; 21801558Srgrimes } 21811558Srgrimes cp++; 21821558Srgrimes } 21839336Sdfr if (lstat(dirp, &sb) < 0 || !S_ISDIR(sb.st_mode)) 21841558Srgrimes ret = 0; 21851558Srgrimes return (ret); 21861558Srgrimes} 21879336Sdfr 21889336Sdfr/* 21899336Sdfr * Just translate an ascii string to an integer. 21909336Sdfr */ 21919336Sdfrint 21929336Sdfrget_num(cp) 21939336Sdfr register char *cp; 21949336Sdfr{ 21959336Sdfr register int res = 0; 21969336Sdfr 21979336Sdfr while (*cp) { 21989336Sdfr if (*cp < '0' || *cp > '9') 21999336Sdfr return (-1); 22009336Sdfr res = res * 10 + (*cp++ - '0'); 22019336Sdfr } 22029336Sdfr return (res); 22039336Sdfr} 2204