mountd.c revision 333197
1331722Seadler/* 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 * 4. Neither the name of the University nor the names of its contributors 171558Srgrimes * may be used to endorse or promote products derived from this software 181558Srgrimes * without specific prior written permission. 191558Srgrimes * 201558Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 211558Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 221558Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 231558Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 241558Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 251558Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 261558Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 271558Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 281558Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 291558Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 301558Srgrimes * SUCH DAMAGE. 311558Srgrimes */ 321558Srgrimes 331558Srgrimes#ifndef lint 3437663Scharnierstatic const char copyright[] = 351558Srgrimes"@(#) Copyright (c) 1989, 1993\n\ 361558Srgrimes The Regents of the University of California. All rights reserved.\n"; 372999Swollman#endif /*not lint*/ 381558Srgrimes 39105267Scharnier#if 0 401558Srgrimes#ifndef lint 4137663Scharnierstatic char sccsid[] = "@(#)mountd.c 8.15 (Berkeley) 5/1/95"; 42105267Scharnier#endif /*not lint*/ 4337663Scharnier#endif 441558Srgrimes 45105267Scharnier#include <sys/cdefs.h> 46105267Scharnier__FBSDID("$FreeBSD: stable/11/usr.sbin/mountd/mountd.c 333197 2018-05-03 07:28:04Z avg $"); 47105267Scharnier 481558Srgrimes#include <sys/param.h> 49192934Srmacklem#include <sys/fcntl.h> 50192934Srmacklem#include <sys/linker.h> 51192934Srmacklem#include <sys/module.h> 521558Srgrimes#include <sys/mount.h> 53324955Smanu#include <sys/queue.h> 541558Srgrimes#include <sys/stat.h> 55192934Srmacklem#include <sys/sysctl.h> 561558Srgrimes#include <sys/syslog.h> 571558Srgrimes 581558Srgrimes#include <rpc/rpc.h> 59109363Smbr#include <rpc/rpc_com.h> 601558Srgrimes#include <rpc/pmap_clnt.h> 6174462Salfred#include <rpc/pmap_prot.h> 6274462Salfred#include <rpcsvc/mount.h> 639336Sdfr#include <nfs/nfsproto.h> 64192934Srmacklem#include <nfs/nfssvc.h> 6583653Speter#include <nfsserver/nfs.h> 661558Srgrimes 67192934Srmacklem#include <fs/nfs/nfsport.h> 68192934Srmacklem 691558Srgrimes#include <arpa/inet.h> 701558Srgrimes 711558Srgrimes#include <ctype.h> 7237663Scharnier#include <err.h> 731558Srgrimes#include <errno.h> 741558Srgrimes#include <grp.h> 75149433Spjd#include <libutil.h> 76103949Smike#include <limits.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" 85158857Srodrigc#include "mntopts.h" 861558Srgrimes 871558Srgrimes#ifdef DEBUG 881558Srgrimes#include <stdarg.h> 891558Srgrimes#endif 901558Srgrimes 911558Srgrimes/* 921558Srgrimes * Structures for keeping the mount list and export list 931558Srgrimes */ 941558Srgrimesstruct mountlist { 95194880Sdfr char ml_host[MNTNAMLEN+1]; 96194880Sdfr char ml_dirp[MNTPATHLEN+1]; 97324955Smanu 98324955Smanu SLIST_ENTRY(mountlist) next; 991558Srgrimes}; 1001558Srgrimes 1011558Srgrimesstruct dirlist { 1021558Srgrimes struct dirlist *dp_left; 1031558Srgrimes struct dirlist *dp_right; 1041558Srgrimes int dp_flag; 1051558Srgrimes struct hostlist *dp_hosts; /* List of hosts this dir exported to */ 106324234Smanu char *dp_dirp; 1071558Srgrimes}; 1081558Srgrimes/* dp_flag bits */ 1091558Srgrimes#define DP_DEFSET 0x1 1109336Sdfr#define DP_HOSTSET 0x2 1111558Srgrimes 1121558Srgrimesstruct exportlist { 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; 119184588Sdfr int ex_numsecflavors; 120184588Sdfr int ex_secflavors[MAXSECFLAVORS]; 121240902Srmacklem int ex_defnumsecflavors; 122240902Srmacklem int ex_defsecflavors[MAXSECFLAVORS]; 123324955Smanu 124324955Smanu SLIST_ENTRY(exportlist) entries; 1251558Srgrimes}; 1261558Srgrimes/* ex_flag bits */ 1271558Srgrimes#define EX_LINKED 0x1 1281558Srgrimes 1291558Srgrimesstruct netmsk { 13074462Salfred struct sockaddr_storage nt_net; 13175801Siedowse struct sockaddr_storage nt_mask; 13242144Sdfr char *nt_name; 1331558Srgrimes}; 1341558Srgrimes 1351558Srgrimesunion grouptypes { 13674462Salfred struct addrinfo *gt_addrinfo; 1371558Srgrimes struct netmsk gt_net; 1381558Srgrimes}; 1391558Srgrimes 1401558Srgrimesstruct grouplist { 1411558Srgrimes int gr_type; 1421558Srgrimes union grouptypes gr_ptr; 1431558Srgrimes struct grouplist *gr_next; 144240902Srmacklem int gr_numsecflavors; 145240902Srmacklem int gr_secflavors[MAXSECFLAVORS]; 1461558Srgrimes}; 1471558Srgrimes/* Group types */ 1481558Srgrimes#define GT_NULL 0x0 1491558Srgrimes#define GT_HOST 0x1 1501558Srgrimes#define GT_NET 0x2 15175641Siedowse#define GT_DEFAULT 0x3 1527401Swpaul#define GT_IGNORE 0x5 1531558Srgrimes 1541558Srgrimesstruct hostlist { 1559336Sdfr int ht_flag; /* Uses DP_xx bits */ 1561558Srgrimes struct grouplist *ht_grp; 1571558Srgrimes struct hostlist *ht_next; 1581558Srgrimes}; 1591558Srgrimes 1609336Sdfrstruct fhreturn { 1619336Sdfr int fhr_flag; 1629336Sdfr int fhr_vers; 1639336Sdfr nfsfh_t fhr_fh; 164184588Sdfr int fhr_numsecflavors; 165184588Sdfr int *fhr_secflavors; 1669336Sdfr}; 1679336Sdfr 168222623Srmacklem#define GETPORT_MAXTRY 20 /* Max tries to get a port # */ 169222623Srmacklem 1701558Srgrimes/* Global defs */ 171285128Straszstatic char *add_expdir(struct dirlist **, char *, int); 172285128Straszstatic void add_dlist(struct dirlist **, struct dirlist *, 173285128Strasz struct grouplist *, int, struct exportlist *); 174285128Straszstatic void add_mlist(char *, char *); 175285128Straszstatic int check_dirpath(char *); 176285128Straszstatic int check_options(struct dirlist *); 177285128Straszstatic int checkmask(struct sockaddr *sa); 178285128Straszstatic int chk_host(struct dirlist *, struct sockaddr *, int *, int *, 179285128Strasz int *, int **); 180293305Sjpaetzelstatic char *strsep_quote(char **stringp, const char *delim); 181222623Srmacklemstatic int create_service(struct netconfig *nconf); 182222623Srmacklemstatic void complete_service(struct netconfig *nconf, char *port_str); 183222623Srmacklemstatic void clearout_service(void); 184285128Straszstatic void del_mlist(char *hostp, char *dirp); 185285128Straszstatic struct dirlist *dirp_search(struct dirlist *, char *); 186285128Straszstatic int do_mount(struct exportlist *, struct grouplist *, int, 187285128Strasz struct xucred *, char *, int, struct statfs *); 188285128Straszstatic int do_opt(char **, char **, struct exportlist *, 189285128Strasz struct grouplist *, int *, int *, struct xucred *); 190285128Straszstatic struct exportlist *ex_search(fsid_t *); 191285128Straszstatic struct exportlist *get_exp(void); 192285128Straszstatic void free_dir(struct dirlist *); 193285128Straszstatic void free_exp(struct exportlist *); 194285128Straszstatic void free_grp(struct grouplist *); 195285128Straszstatic void free_host(struct hostlist *); 196285128Straszstatic void get_exportlist(void); 197285128Straszstatic int get_host(char *, struct grouplist *, struct grouplist *); 198285128Straszstatic struct hostlist *get_ht(void); 199285128Straszstatic int get_line(void); 200285128Straszstatic void get_mountlist(void); 201285128Straszstatic int get_net(char *, struct netmsk *, int); 202329392Sbrdstatic void getexp_err(struct exportlist *, struct grouplist *, const char *); 203285128Straszstatic struct grouplist *get_grp(void); 204285128Straszstatic void hang_dirp(struct dirlist *, struct grouplist *, 20592882Simp struct exportlist *, int); 206285128Straszstatic void huphandler(int sig); 207285128Straszstatic int makemask(struct sockaddr_storage *ssp, int bitlen); 208285128Straszstatic void mntsrv(struct svc_req *, SVCXPRT *); 209285128Straszstatic void nextfield(char **, char **); 210285128Straszstatic void out_of_mem(void); 211285128Straszstatic void parsecred(char *, struct xucred *); 212285128Straszstatic int parsesec(char *, struct exportlist *); 213285128Straszstatic int put_exlist(struct dirlist *, XDR *, struct dirlist *, 214285128Strasz int *, int); 215285128Straszstatic void *sa_rawaddr(struct sockaddr *sa, int *nbytes); 216285128Straszstatic int sacmp(struct sockaddr *sa1, struct sockaddr *sa2, 217285128Strasz struct sockaddr *samask); 218285128Straszstatic int scan_tree(struct dirlist *, struct sockaddr *); 219285128Straszstatic void usage(void); 220285128Straszstatic int xdr_dir(XDR *, char *); 221285128Straszstatic int xdr_explist(XDR *, caddr_t); 222285128Straszstatic int xdr_explist_brief(XDR *, caddr_t); 223285128Straszstatic int xdr_explist_common(XDR *, caddr_t, int); 224285128Straszstatic int xdr_fhs(XDR *, caddr_t); 225285128Straszstatic int xdr_mlist(XDR *, caddr_t); 226285128Straszstatic void terminate(int); 2271558Srgrimes 228324955Smanustatic SLIST_HEAD(, exportlist) exphead = SLIST_HEAD_INITIALIZER(exphead); 229324955Smanustatic SLIST_HEAD(, mountlist) mlhead = SLIST_HEAD_INITIALIZER(mlhead); 230285128Straszstatic struct grouplist *grphead; 231285128Straszstatic char *exnames_default[2] = { _PATH_EXPORTS, NULL }; 232285128Straszstatic char **exnames; 233285128Straszstatic char **hosts = NULL; 234285128Straszstatic struct xucred def_anon = { 23591354Sdd XUCRED_VERSION, 23672650Sgreen (uid_t)-2, 2371558Srgrimes 1, 23872650Sgreen { (gid_t)-2 }, 23972650Sgreen NULL 2401558Srgrimes}; 241285128Straszstatic int force_v2 = 0; 242285128Straszstatic int resvport_only = 1; 243285128Straszstatic int nhosts = 0; 244285128Straszstatic int dir_only = 1; 245285128Straszstatic int dolog = 0; 246285128Straszstatic int got_sighup = 0; 247285128Straszstatic int xcreated = 0; 24874462Salfred 249285128Straszstatic char *svcport_str = NULL; 250285128Straszstatic int mallocd_svcport = 0; 251285128Straszstatic int *sock_fd; 252285128Straszstatic int sock_fdcnt; 253285128Straszstatic int sock_fdpos; 254285128Straszstatic int suspend_nfsd = 0; 255172827Smatteo 256285128Straszstatic int opt_flags; 25774462Salfredstatic int have_v6 = 1; 25874462Salfred 259285128Straszstatic int v4root_phase = 0; 260285128Straszstatic char v4root_dirpath[PATH_MAX + 1]; 261285128Straszstatic int has_publicfh = 0; 262192934Srmacklem 263285128Straszstatic struct pidfh *pfh = NULL; 26475801Siedowse/* Bits for opt_flags above */ 2651558Srgrimes#define OP_MAPROOT 0x01 2661558Srgrimes#define OP_MAPALL 0x02 26783653Speter/* 0x4 free */ 2681558Srgrimes#define OP_MASK 0x08 2691558Srgrimes#define OP_NET 0x10 2701558Srgrimes#define OP_ALLDIRS 0x40 27175801Siedowse#define OP_HAVEMASK 0x80 /* A mask was specified or inferred. */ 272100336Sjoerg#define OP_QUIET 0x100 27374462Salfred#define OP_MASKLEN 0x200 274184588Sdfr#define OP_SEC 0x400 2751558Srgrimes 2761558Srgrimes#ifdef DEBUG 277285128Straszstatic int debug = 1; 278285128Straszstatic void SYSLOG(int, const char *, ...) __printflike(2, 3); 2791558Srgrimes#define syslog SYSLOG 2801558Srgrimes#else 281285128Straszstatic int debug = 0; 2821558Srgrimes#endif 2831558Srgrimes 2841558Srgrimes/* 285293305Sjpaetzel * Similar to strsep(), but it allows for quoted strings 286293305Sjpaetzel * and escaped characters. 287293305Sjpaetzel * 288293305Sjpaetzel * It returns the string (or NULL, if *stringp is NULL), 289293305Sjpaetzel * which is a de-quoted version of the string if necessary. 290293305Sjpaetzel * 291293305Sjpaetzel * It modifies *stringp in place. 292293305Sjpaetzel */ 293293305Sjpaetzelstatic char * 294293305Sjpaetzelstrsep_quote(char **stringp, const char *delim) 295293305Sjpaetzel{ 296293305Sjpaetzel char *srcptr, *dstptr, *retval; 297293305Sjpaetzel char quot = 0; 298293305Sjpaetzel 299293305Sjpaetzel if (stringp == NULL || *stringp == NULL) 300293305Sjpaetzel return (NULL); 301293305Sjpaetzel 302293305Sjpaetzel srcptr = dstptr = retval = *stringp; 303293305Sjpaetzel 304293305Sjpaetzel while (*srcptr) { 305293305Sjpaetzel /* 306293305Sjpaetzel * We're looking for several edge cases here. 307293305Sjpaetzel * First: if we're in quote state (quot != 0), 308293305Sjpaetzel * then we ignore the delim characters, but otherwise 309293305Sjpaetzel * process as normal, unless it is the quote character. 310293305Sjpaetzel * Second: if the current character is a backslash, 311293305Sjpaetzel * we take the next character as-is, without checking 312293305Sjpaetzel * for delim, quote, or backslash. Exception: if the 313293305Sjpaetzel * next character is a NUL, that's the end of the string. 314293305Sjpaetzel * Third: if the character is a quote character, we toggle 315293305Sjpaetzel * quote state. 316293305Sjpaetzel * Otherwise: check the current character for NUL, or 317293305Sjpaetzel * being in delim, and end the string if either is true. 318293305Sjpaetzel */ 319293305Sjpaetzel if (*srcptr == '\\') { 320293305Sjpaetzel srcptr++; 321293305Sjpaetzel /* 322293305Sjpaetzel * The edge case here is if the next character 323293305Sjpaetzel * is NUL, we want to stop processing. But if 324293305Sjpaetzel * it's not NUL, then we simply want to copy it. 325293305Sjpaetzel */ 326293305Sjpaetzel if (*srcptr) { 327293305Sjpaetzel *dstptr++ = *srcptr++; 328293305Sjpaetzel } 329293305Sjpaetzel continue; 330293305Sjpaetzel } 331293305Sjpaetzel if (quot == 0 && (*srcptr == '\'' || *srcptr == '"')) { 332293305Sjpaetzel quot = *srcptr++; 333293305Sjpaetzel continue; 334293305Sjpaetzel } 335293305Sjpaetzel if (quot && *srcptr == quot) { 336293305Sjpaetzel /* End of the quoted part */ 337293305Sjpaetzel quot = 0; 338293305Sjpaetzel srcptr++; 339293305Sjpaetzel continue; 340293305Sjpaetzel } 341293305Sjpaetzel if (!quot && strchr(delim, *srcptr)) 342293305Sjpaetzel break; 343293305Sjpaetzel *dstptr++ = *srcptr++; 344293305Sjpaetzel } 345293305Sjpaetzel 346293305Sjpaetzel *dstptr = 0; /* Terminate the string */ 347293305Sjpaetzel *stringp = (*srcptr == '\0') ? NULL : srcptr + 1; 348293305Sjpaetzel return (retval); 349293305Sjpaetzel} 350293305Sjpaetzel 351293305Sjpaetzel/* 3521558Srgrimes * Mountd server for NFS mount protocol as described in: 3531558Srgrimes * NFS: Network File System Protocol Specification, RFC1094, Appendix A 3541558Srgrimes * The optional arguments are the exports file name 3551558Srgrimes * default: _PATH_EXPORTS 3561558Srgrimes * and "-n" to allow nonroot mount. 3571558Srgrimes */ 3581558Srgrimesint 359216587Scharniermain(int argc, char **argv) 3601558Srgrimes{ 36175754Siedowse fd_set readfds; 362172827Smatteo struct netconfig *nconf; 363172827Smatteo char *endptr, **hosts_bak; 364172827Smatteo void *nc_handle; 365149433Spjd pid_t otherpid; 366172827Smatteo in_port_t svcport; 367172827Smatteo int c, k, s; 368109363Smbr int maxrec = RPC_MAXDATASIZE; 369222623Srmacklem int attempt_cnt, port_len, port_pos, ret; 370222623Srmacklem char **port_list; 3711558Srgrimes 37274462Salfred /* Check that another mountd isn't already running. */ 373150214Spjd pfh = pidfile_open(_PATH_MOUNTDPID, 0600, &otherpid); 374149433Spjd if (pfh == NULL) { 375149433Spjd if (errno == EEXIST) 376149433Spjd errx(1, "mountd already running, pid: %d.", otherpid); 377149433Spjd warn("cannot open or create pidfile"); 378149433Spjd } 37974462Salfred 38074462Salfred s = socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP); 38174462Salfred if (s < 0) 38274462Salfred have_v6 = 0; 38374462Salfred else 38474462Salfred close(s); 3852999Swollman 386282214Strasz while ((c = getopt(argc, argv, "2deh:lnp:rS")) != -1) 3871558Srgrimes switch (c) { 38825087Sdfr case '2': 38925087Sdfr force_v2 = 1; 39025087Sdfr break; 391192993Srmacklem case 'e': 392220980Srmacklem /* now a no-op, since this is the default */ 393192934Srmacklem break; 3949336Sdfr case 'n': 3959336Sdfr resvport_only = 0; 3969336Sdfr break; 3979336Sdfr case 'r': 3989336Sdfr dir_only = 0; 3999336Sdfr break; 4008688Sphk case 'd': 4018688Sphk debug = debug ? 0 : 1; 4028688Sphk break; 40331656Sguido case 'l': 404121767Speter dolog = 1; 40531656Sguido break; 406126572Sbms case 'p': 407126572Sbms endptr = NULL; 408126572Sbms svcport = (in_port_t)strtoul(optarg, &endptr, 10); 409126572Sbms if (endptr == NULL || *endptr != '\0' || 410126572Sbms svcport == 0 || svcport >= IPPORT_MAX) 411126572Sbms usage(); 412172827Smatteo svcport_str = strdup(optarg); 413126572Sbms break; 414172827Smatteo case 'h': 415172827Smatteo ++nhosts; 416172827Smatteo hosts_bak = hosts; 417172827Smatteo hosts_bak = realloc(hosts, nhosts * sizeof(char *)); 418172827Smatteo if (hosts_bak == NULL) { 419172827Smatteo if (hosts != NULL) { 420172827Smatteo for (k = 0; k < nhosts; k++) 421172827Smatteo free(hosts[k]); 422172827Smatteo free(hosts); 423172827Smatteo out_of_mem(); 424172827Smatteo } 425172827Smatteo } 426172827Smatteo hosts = hosts_bak; 427172827Smatteo hosts[nhosts - 1] = strdup(optarg); 428172827Smatteo if (hosts[nhosts - 1] == NULL) { 429172827Smatteo for (k = 0; k < (nhosts - 1); k++) 430172827Smatteo free(hosts[k]); 431172827Smatteo free(hosts); 432172827Smatteo out_of_mem(); 433172827Smatteo } 434172827Smatteo break; 435241568Srmacklem case 'S': 436241568Srmacklem suspend_nfsd = 1; 437241568Srmacklem break; 4381558Srgrimes default: 43937663Scharnier usage(); 440298089Spfg } 441192934Srmacklem 442282214Strasz if (modfind("nfsd") < 0) { 443192934Srmacklem /* Not present in kernel, try loading it */ 444282214Strasz if (kldload("nfsd") < 0 || modfind("nfsd") < 0) 445192934Srmacklem errx(1, "NFS server is not available"); 446192934Srmacklem } 447192934Srmacklem 4481558Srgrimes argc -= optind; 4491558Srgrimes argv += optind; 4501558Srgrimes grphead = (struct grouplist *)NULL; 451166440Spjd if (argc > 0) 452166440Spjd exnames = argv; 453166440Spjd else 454166440Spjd exnames = exnames_default; 4551558Srgrimes openlog("mountd", LOG_PID, LOG_DAEMON); 4561558Srgrimes if (debug) 45737663Scharnier warnx("getting export list"); 4581558Srgrimes get_exportlist(); 4591558Srgrimes if (debug) 46037663Scharnier warnx("getting mount list"); 4611558Srgrimes get_mountlist(); 4621558Srgrimes if (debug) 46337663Scharnier warnx("here we go"); 4641558Srgrimes if (debug == 0) { 4651558Srgrimes daemon(0, 0); 4661558Srgrimes signal(SIGINT, SIG_IGN); 4671558Srgrimes signal(SIGQUIT, SIG_IGN); 4681558Srgrimes } 46975754Siedowse signal(SIGHUP, huphandler); 47074462Salfred signal(SIGTERM, terminate); 471164394Srodrigc signal(SIGPIPE, SIG_IGN); 472149433Spjd 473149433Spjd pidfile_write(pfh); 474149433Spjd 475194880Sdfr rpcb_unset(MOUNTPROG, MOUNTVERS, NULL); 476194880Sdfr rpcb_unset(MOUNTPROG, MOUNTVERS3, NULL); 477109363Smbr rpc_control(RPC_SVC_CONNMAXREC_SET, &maxrec); 478109363Smbr 47924759Sguido if (!resvport_only) { 480308449Srmacklem if (sysctlbyname("vfs.nfsd.nfs_privport", NULL, NULL, 48183687Speter &resvport_only, sizeof(resvport_only)) != 0 && 48283687Speter errno != ENOENT) { 48324759Sguido syslog(LOG_ERR, "sysctl: %m"); 48424759Sguido exit(1); 48524759Sguido } 48624330Sguido } 487126572Sbms 488172827Smatteo /* 489172827Smatteo * If no hosts were specified, add a wildcard entry to bind to 490172827Smatteo * INADDR_ANY. Otherwise make sure 127.0.0.1 and ::1 are added to the 491172827Smatteo * list. 492172827Smatteo */ 493172827Smatteo if (nhosts == 0) { 494292864Suqs hosts = malloc(sizeof(char *)); 495172827Smatteo if (hosts == NULL) 496172827Smatteo out_of_mem(); 497172827Smatteo hosts[0] = "*"; 498172827Smatteo nhosts = 1; 499172827Smatteo } else { 500172827Smatteo hosts_bak = hosts; 501172827Smatteo if (have_v6) { 502172827Smatteo hosts_bak = realloc(hosts, (nhosts + 2) * 503172827Smatteo sizeof(char *)); 504172827Smatteo if (hosts_bak == NULL) { 505172827Smatteo for (k = 0; k < nhosts; k++) 506172827Smatteo free(hosts[k]); 507172827Smatteo free(hosts); 508172827Smatteo out_of_mem(); 509172827Smatteo } else 510172827Smatteo hosts = hosts_bak; 511172827Smatteo nhosts += 2; 512172827Smatteo hosts[nhosts - 2] = "::1"; 513172827Smatteo } else { 514172827Smatteo hosts_bak = realloc(hosts, (nhosts + 1) * sizeof(char *)); 515172827Smatteo if (hosts_bak == NULL) { 516172827Smatteo for (k = 0; k < nhosts; k++) 517172827Smatteo free(hosts[k]); 518172827Smatteo free(hosts); 519172827Smatteo out_of_mem(); 520172827Smatteo } else { 521172827Smatteo nhosts += 1; 522172827Smatteo hosts = hosts_bak; 523126572Sbms } 524172827Smatteo } 52574462Salfred 526172827Smatteo hosts[nhosts - 1] = "127.0.0.1"; 52774462Salfred } 52874462Salfred 529222623Srmacklem attempt_cnt = 1; 530222623Srmacklem sock_fdcnt = 0; 531222623Srmacklem sock_fd = NULL; 532222623Srmacklem port_list = NULL; 533222623Srmacklem port_len = 0; 534172827Smatteo nc_handle = setnetconfig(); 535172827Smatteo while ((nconf = getnetconfig(nc_handle))) { 536172827Smatteo if (nconf->nc_flag & NC_VISIBLE) { 537172827Smatteo if (have_v6 == 0 && strcmp(nconf->nc_protofmly, 538172827Smatteo "inet6") == 0) { 539172827Smatteo /* DO NOTHING */ 540222623Srmacklem } else { 541222623Srmacklem ret = create_service(nconf); 542222623Srmacklem if (ret == 1) 543222623Srmacklem /* Ignore this call */ 544222623Srmacklem continue; 545222623Srmacklem if (ret < 0) { 546222623Srmacklem /* 547222623Srmacklem * Failed to bind port, so close off 548222623Srmacklem * all sockets created and try again 549222623Srmacklem * if the port# was dynamically 550222623Srmacklem * assigned via bind(2). 551222623Srmacklem */ 552222623Srmacklem clearout_service(); 553222623Srmacklem if (mallocd_svcport != 0 && 554222623Srmacklem attempt_cnt < GETPORT_MAXTRY) { 555222623Srmacklem free(svcport_str); 556222623Srmacklem svcport_str = NULL; 557222623Srmacklem mallocd_svcport = 0; 558222623Srmacklem } else { 559222623Srmacklem errno = EADDRINUSE; 560222623Srmacklem syslog(LOG_ERR, 561222623Srmacklem "bindresvport_sa: %m"); 562222623Srmacklem exit(1); 563222623Srmacklem } 564222623Srmacklem 565222623Srmacklem /* Start over at the first service. */ 566222623Srmacklem free(sock_fd); 567222623Srmacklem sock_fdcnt = 0; 568222623Srmacklem sock_fd = NULL; 569222623Srmacklem nc_handle = setnetconfig(); 570222623Srmacklem attempt_cnt++; 571222623Srmacklem } else if (mallocd_svcport != 0 && 572222623Srmacklem attempt_cnt == GETPORT_MAXTRY) { 573222623Srmacklem /* 574222623Srmacklem * For the last attempt, allow 575222623Srmacklem * different port #s for each nconf 576222623Srmacklem * by saving the svcport_str and 577222623Srmacklem * setting it back to NULL. 578222623Srmacklem */ 579222623Srmacklem port_list = realloc(port_list, 580222623Srmacklem (port_len + 1) * sizeof(char *)); 581222623Srmacklem if (port_list == NULL) 582222623Srmacklem out_of_mem(); 583222623Srmacklem port_list[port_len++] = svcport_str; 584222623Srmacklem svcport_str = NULL; 585222623Srmacklem mallocd_svcport = 0; 586222623Srmacklem } 587222623Srmacklem } 588222623Srmacklem } 589222623Srmacklem } 590222623Srmacklem 591222623Srmacklem /* 592222623Srmacklem * Successfully bound the ports, so call complete_service() to 593222623Srmacklem * do the rest of the setup on the service(s). 594222623Srmacklem */ 595222623Srmacklem sock_fdpos = 0; 596222623Srmacklem port_pos = 0; 597222623Srmacklem nc_handle = setnetconfig(); 598222623Srmacklem while ((nconf = getnetconfig(nc_handle))) { 599222623Srmacklem if (nconf->nc_flag & NC_VISIBLE) { 600222623Srmacklem if (have_v6 == 0 && strcmp(nconf->nc_protofmly, 601222623Srmacklem "inet6") == 0) { 602222623Srmacklem /* DO NOTHING */ 603222623Srmacklem } else if (port_list != NULL) { 604222623Srmacklem if (port_pos >= port_len) { 605222623Srmacklem syslog(LOG_ERR, "too many port#s"); 606222623Srmacklem exit(1); 607222623Srmacklem } 608222623Srmacklem complete_service(nconf, port_list[port_pos++]); 609172827Smatteo } else 610222623Srmacklem complete_service(nconf, svcport_str); 611172827Smatteo } 61274462Salfred } 613172827Smatteo endnetconfig(nc_handle); 614222623Srmacklem free(sock_fd); 615222623Srmacklem if (port_list != NULL) { 616222623Srmacklem for (port_pos = 0; port_pos < port_len; port_pos++) 617222623Srmacklem free(port_list[port_pos]); 618222623Srmacklem free(port_list); 619222623Srmacklem } 62074462Salfred 62174462Salfred if (xcreated == 0) { 62274462Salfred syslog(LOG_ERR, "could not create any services"); 6231558Srgrimes exit(1); 6241558Srgrimes } 62575754Siedowse 62675754Siedowse /* Expand svc_run() here so that we can call get_exportlist(). */ 62775754Siedowse for (;;) { 62875754Siedowse if (got_sighup) { 62975754Siedowse get_exportlist(); 63075754Siedowse got_sighup = 0; 63175754Siedowse } 63275754Siedowse readfds = svc_fdset; 63375754Siedowse switch (select(svc_maxfd + 1, &readfds, NULL, NULL, NULL)) { 63475754Siedowse case -1: 63575754Siedowse if (errno == EINTR) 63675754Siedowse continue; 63775754Siedowse syslog(LOG_ERR, "mountd died: select: %m"); 63875754Siedowse exit(1); 63975754Siedowse case 0: 64075754Siedowse continue; 64175754Siedowse default: 64275754Siedowse svc_getreqset(&readfds); 64375754Siedowse } 64475754Siedowse } 645172827Smatteo} 646172827Smatteo 647172827Smatteo/* 648172827Smatteo * This routine creates and binds sockets on the appropriate 649222623Srmacklem * addresses. It gets called one time for each transport. 650222623Srmacklem * It returns 0 upon success, 1 for ingore the call and -1 to indicate 651222623Srmacklem * bind failed with EADDRINUSE. 652222623Srmacklem * Any file descriptors that have been created are stored in sock_fd and 653222623Srmacklem * the total count of them is maintained in sock_fdcnt. 654172827Smatteo */ 655222623Srmacklemstatic int 656172827Smatteocreate_service(struct netconfig *nconf) 657172827Smatteo{ 658172827Smatteo struct addrinfo hints, *res = NULL; 659172827Smatteo struct sockaddr_in *sin; 660172827Smatteo struct sockaddr_in6 *sin6; 661172827Smatteo struct __rpc_sockinfo si; 662172827Smatteo int aicode; 663172827Smatteo int fd; 664172827Smatteo int nhostsbak; 665172827Smatteo int one = 1; 666172827Smatteo int r; 667172827Smatteo u_int32_t host_addr[4]; /* IPv4 or IPv6 */ 668222623Srmacklem int mallocd_res; 669172827Smatteo 670172827Smatteo if ((nconf->nc_semantics != NC_TPI_CLTS) && 671172827Smatteo (nconf->nc_semantics != NC_TPI_COTS) && 672172827Smatteo (nconf->nc_semantics != NC_TPI_COTS_ORD)) 673222623Srmacklem return (1); /* not my type */ 674172827Smatteo 675172827Smatteo /* 676172827Smatteo * XXX - using RPC library internal functions. 677172827Smatteo */ 678172827Smatteo if (!__rpc_nconf2sockinfo(nconf, &si)) { 679172827Smatteo syslog(LOG_ERR, "cannot get information for %s", 680172827Smatteo nconf->nc_netid); 681222623Srmacklem return (1); 682172827Smatteo } 683172827Smatteo 684172827Smatteo /* Get mountd's address on this transport */ 685172827Smatteo memset(&hints, 0, sizeof hints); 686172827Smatteo hints.ai_family = si.si_af; 687172827Smatteo hints.ai_socktype = si.si_socktype; 688172827Smatteo hints.ai_protocol = si.si_proto; 689172827Smatteo 690172827Smatteo /* 691172827Smatteo * Bind to specific IPs if asked to 692172827Smatteo */ 693172827Smatteo nhostsbak = nhosts; 694172827Smatteo while (nhostsbak > 0) { 695172827Smatteo --nhostsbak; 696222623Srmacklem sock_fd = realloc(sock_fd, (sock_fdcnt + 1) * sizeof(int)); 697222623Srmacklem if (sock_fd == NULL) 698222623Srmacklem out_of_mem(); 699222623Srmacklem sock_fd[sock_fdcnt++] = -1; /* Set invalid for now. */ 700222623Srmacklem mallocd_res = 0; 701222623Srmacklem 702277352Srstone hints.ai_flags = AI_PASSIVE; 703277352Srstone 704172827Smatteo /* 705172827Smatteo * XXX - using RPC library internal functions. 706172827Smatteo */ 707172827Smatteo if ((fd = __rpc_nconf2fd(nconf)) < 0) { 708172827Smatteo int non_fatal = 0; 709244538Skevlo if (errno == EAFNOSUPPORT && 710172827Smatteo nconf->nc_semantics != NC_TPI_CLTS) 711172827Smatteo non_fatal = 1; 712172827Smatteo 713172827Smatteo syslog(non_fatal ? LOG_DEBUG : LOG_ERR, 714172827Smatteo "cannot create socket for %s", nconf->nc_netid); 715222623Srmacklem if (non_fatal != 0) 716222623Srmacklem continue; 717222623Srmacklem exit(1); 718172827Smatteo } 719172827Smatteo 720172827Smatteo switch (hints.ai_family) { 721172827Smatteo case AF_INET: 722172827Smatteo if (inet_pton(AF_INET, hosts[nhostsbak], 723172827Smatteo host_addr) == 1) { 724222623Srmacklem hints.ai_flags |= AI_NUMERICHOST; 725172827Smatteo } else { 726172827Smatteo /* 727172827Smatteo * Skip if we have an AF_INET6 address. 728172827Smatteo */ 729172827Smatteo if (inet_pton(AF_INET6, hosts[nhostsbak], 730172827Smatteo host_addr) == 1) { 731172827Smatteo close(fd); 732172827Smatteo continue; 733172827Smatteo } 734172827Smatteo } 735172827Smatteo break; 736172827Smatteo case AF_INET6: 737172827Smatteo if (inet_pton(AF_INET6, hosts[nhostsbak], 738172827Smatteo host_addr) == 1) { 739222623Srmacklem hints.ai_flags |= AI_NUMERICHOST; 740172827Smatteo } else { 741172827Smatteo /* 742172827Smatteo * Skip if we have an AF_INET address. 743172827Smatteo */ 744172827Smatteo if (inet_pton(AF_INET, hosts[nhostsbak], 745172827Smatteo host_addr) == 1) { 746172827Smatteo close(fd); 747172827Smatteo continue; 748172827Smatteo } 749172827Smatteo } 750172827Smatteo 751172827Smatteo /* 752172827Smatteo * We're doing host-based access checks here, so don't 753172827Smatteo * allow v4-in-v6 to confuse things. The kernel will 754172827Smatteo * disable it by default on NFS sockets too. 755172827Smatteo */ 756172827Smatteo if (setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &one, 757172827Smatteo sizeof one) < 0) { 758172827Smatteo syslog(LOG_ERR, 759172827Smatteo "can't disable v4-in-v6 on IPv6 socket"); 760172827Smatteo exit(1); 761172827Smatteo } 762172827Smatteo break; 763172827Smatteo default: 764172827Smatteo break; 765172827Smatteo } 766172827Smatteo 767172827Smatteo /* 768172827Smatteo * If no hosts were specified, just bind to INADDR_ANY 769172827Smatteo */ 770172827Smatteo if (strcmp("*", hosts[nhostsbak]) == 0) { 771172827Smatteo if (svcport_str == NULL) { 772172827Smatteo res = malloc(sizeof(struct addrinfo)); 773172827Smatteo if (res == NULL) 774172827Smatteo out_of_mem(); 775222623Srmacklem mallocd_res = 1; 776172827Smatteo res->ai_flags = hints.ai_flags; 777172827Smatteo res->ai_family = hints.ai_family; 778172827Smatteo res->ai_protocol = hints.ai_protocol; 779172827Smatteo switch (res->ai_family) { 780172827Smatteo case AF_INET: 781172827Smatteo sin = malloc(sizeof(struct sockaddr_in)); 782172827Smatteo if (sin == NULL) 783172827Smatteo out_of_mem(); 784172827Smatteo sin->sin_family = AF_INET; 785172827Smatteo sin->sin_port = htons(0); 786172827Smatteo sin->sin_addr.s_addr = htonl(INADDR_ANY); 787172827Smatteo res->ai_addr = (struct sockaddr*) sin; 788172827Smatteo res->ai_addrlen = (socklen_t) 789222623Srmacklem sizeof(struct sockaddr_in); 790172827Smatteo break; 791172827Smatteo case AF_INET6: 792172827Smatteo sin6 = malloc(sizeof(struct sockaddr_in6)); 793173056Ssimon if (sin6 == NULL) 794172827Smatteo out_of_mem(); 795172827Smatteo sin6->sin6_family = AF_INET6; 796172827Smatteo sin6->sin6_port = htons(0); 797172827Smatteo sin6->sin6_addr = in6addr_any; 798172827Smatteo res->ai_addr = (struct sockaddr*) sin6; 799172827Smatteo res->ai_addrlen = (socklen_t) 800222623Srmacklem sizeof(struct sockaddr_in6); 801222623Srmacklem break; 802172827Smatteo default: 803222623Srmacklem syslog(LOG_ERR, "bad addr fam %d", 804222623Srmacklem res->ai_family); 805222623Srmacklem exit(1); 806172827Smatteo } 807172827Smatteo } else { 808172827Smatteo if ((aicode = getaddrinfo(NULL, svcport_str, 809172827Smatteo &hints, &res)) != 0) { 810172827Smatteo syslog(LOG_ERR, 811172827Smatteo "cannot get local address for %s: %s", 812172827Smatteo nconf->nc_netid, 813172827Smatteo gai_strerror(aicode)); 814222623Srmacklem close(fd); 815172827Smatteo continue; 816172827Smatteo } 817172827Smatteo } 818172827Smatteo } else { 819172827Smatteo if ((aicode = getaddrinfo(hosts[nhostsbak], svcport_str, 820172827Smatteo &hints, &res)) != 0) { 821172827Smatteo syslog(LOG_ERR, 822172827Smatteo "cannot get local address for %s: %s", 823172827Smatteo nconf->nc_netid, gai_strerror(aicode)); 824222623Srmacklem close(fd); 825172827Smatteo continue; 826172827Smatteo } 827172827Smatteo } 828172827Smatteo 829222623Srmacklem /* Store the fd. */ 830222623Srmacklem sock_fd[sock_fdcnt - 1] = fd; 831222623Srmacklem 832222623Srmacklem /* Now, attempt the bind. */ 833172827Smatteo r = bindresvport_sa(fd, res->ai_addr); 834172827Smatteo if (r != 0) { 835222623Srmacklem if (errno == EADDRINUSE && mallocd_svcport != 0) { 836222623Srmacklem if (mallocd_res != 0) { 837222623Srmacklem free(res->ai_addr); 838222623Srmacklem free(res); 839222623Srmacklem } else 840222623Srmacklem freeaddrinfo(res); 841222623Srmacklem return (-1); 842222623Srmacklem } 843172827Smatteo syslog(LOG_ERR, "bindresvport_sa: %m"); 844172827Smatteo exit(1); 845172827Smatteo } 846172827Smatteo 847222623Srmacklem if (svcport_str == NULL) { 848222623Srmacklem svcport_str = malloc(NI_MAXSERV * sizeof(char)); 849222623Srmacklem if (svcport_str == NULL) 850222623Srmacklem out_of_mem(); 851222623Srmacklem mallocd_svcport = 1; 852222623Srmacklem 853222623Srmacklem if (getnameinfo(res->ai_addr, 854222623Srmacklem res->ai_addr->sa_len, NULL, NI_MAXHOST, 855222623Srmacklem svcport_str, NI_MAXSERV * sizeof(char), 856222623Srmacklem NI_NUMERICHOST | NI_NUMERICSERV)) 857222623Srmacklem errx(1, "Cannot get port number"); 858222623Srmacklem } 859222623Srmacklem if (mallocd_res != 0) { 860222623Srmacklem free(res->ai_addr); 861222623Srmacklem free(res); 862222623Srmacklem } else 863222623Srmacklem freeaddrinfo(res); 864222623Srmacklem res = NULL; 865222623Srmacklem } 866222623Srmacklem return (0); 867222623Srmacklem} 868222623Srmacklem 869222623Srmacklem/* 870222623Srmacklem * Called after all the create_service() calls have succeeded, to complete 871222623Srmacklem * the setup and registration. 872222623Srmacklem */ 873222623Srmacklemstatic void 874222623Srmacklemcomplete_service(struct netconfig *nconf, char *port_str) 875222623Srmacklem{ 876222623Srmacklem struct addrinfo hints, *res = NULL; 877222623Srmacklem struct __rpc_sockinfo si; 878222623Srmacklem struct netbuf servaddr; 879222623Srmacklem SVCXPRT *transp = NULL; 880222623Srmacklem int aicode, fd, nhostsbak; 881222623Srmacklem int registered = 0; 882222623Srmacklem 883222623Srmacklem if ((nconf->nc_semantics != NC_TPI_CLTS) && 884222623Srmacklem (nconf->nc_semantics != NC_TPI_COTS) && 885222623Srmacklem (nconf->nc_semantics != NC_TPI_COTS_ORD)) 886222623Srmacklem return; /* not my type */ 887222623Srmacklem 888222623Srmacklem /* 889222623Srmacklem * XXX - using RPC library internal functions. 890222623Srmacklem */ 891222623Srmacklem if (!__rpc_nconf2sockinfo(nconf, &si)) { 892222623Srmacklem syslog(LOG_ERR, "cannot get information for %s", 893222623Srmacklem nconf->nc_netid); 894222623Srmacklem return; 895222623Srmacklem } 896222623Srmacklem 897222623Srmacklem nhostsbak = nhosts; 898222623Srmacklem while (nhostsbak > 0) { 899222623Srmacklem --nhostsbak; 900222623Srmacklem if (sock_fdpos >= sock_fdcnt) { 901222623Srmacklem /* Should never happen. */ 902222623Srmacklem syslog(LOG_ERR, "Ran out of socket fd's"); 903222623Srmacklem return; 904222623Srmacklem } 905222623Srmacklem fd = sock_fd[sock_fdpos++]; 906222623Srmacklem if (fd < 0) 907222623Srmacklem continue; 908222623Srmacklem 909172827Smatteo if (nconf->nc_semantics != NC_TPI_CLTS) 910172827Smatteo listen(fd, SOMAXCONN); 911172827Smatteo 912172827Smatteo if (nconf->nc_semantics == NC_TPI_CLTS ) 913172827Smatteo transp = svc_dg_create(fd, 0, 0); 914172827Smatteo else 915172827Smatteo transp = svc_vc_create(fd, RPC_MAXDATASIZE, 916172827Smatteo RPC_MAXDATASIZE); 917172827Smatteo 918172827Smatteo if (transp != (SVCXPRT *) NULL) { 919194880Sdfr if (!svc_reg(transp, MOUNTPROG, MOUNTVERS, mntsrv, 920172827Smatteo NULL)) 921172827Smatteo syslog(LOG_ERR, 922194880Sdfr "can't register %s MOUNTVERS service", 923172827Smatteo nconf->nc_netid); 924172827Smatteo if (!force_v2) { 925194880Sdfr if (!svc_reg(transp, MOUNTPROG, MOUNTVERS3, 926172827Smatteo mntsrv, NULL)) 927172827Smatteo syslog(LOG_ERR, 928194880Sdfr "can't register %s MOUNTVERS3 service", 929172827Smatteo nconf->nc_netid); 930172827Smatteo } 931172827Smatteo } else 932172827Smatteo syslog(LOG_WARNING, "can't create %s services", 933172827Smatteo nconf->nc_netid); 934172827Smatteo 935172827Smatteo if (registered == 0) { 936172827Smatteo registered = 1; 937172827Smatteo memset(&hints, 0, sizeof hints); 938172827Smatteo hints.ai_flags = AI_PASSIVE; 939172827Smatteo hints.ai_family = si.si_af; 940172827Smatteo hints.ai_socktype = si.si_socktype; 941172827Smatteo hints.ai_protocol = si.si_proto; 942172827Smatteo 943222623Srmacklem if ((aicode = getaddrinfo(NULL, port_str, &hints, 944172827Smatteo &res)) != 0) { 945172827Smatteo syslog(LOG_ERR, "cannot get local address: %s", 946172827Smatteo gai_strerror(aicode)); 947172827Smatteo exit(1); 948172827Smatteo } 949172827Smatteo 950172827Smatteo servaddr.buf = malloc(res->ai_addrlen); 951172827Smatteo memcpy(servaddr.buf, res->ai_addr, res->ai_addrlen); 952172827Smatteo servaddr.len = res->ai_addrlen; 953172827Smatteo 954194880Sdfr rpcb_set(MOUNTPROG, MOUNTVERS, nconf, &servaddr); 955194880Sdfr rpcb_set(MOUNTPROG, MOUNTVERS3, nconf, &servaddr); 956172827Smatteo 957172827Smatteo xcreated++; 958172827Smatteo freeaddrinfo(res); 959172827Smatteo } 960172827Smatteo } /* end while */ 9611558Srgrimes} 9621558Srgrimes 963222623Srmacklem/* 964222623Srmacklem * Clear out sockets after a failure to bind one of them, so that the 965222623Srmacklem * cycle of socket creation/binding can start anew. 966222623Srmacklem */ 96737663Scharnierstatic void 968222623Srmacklemclearout_service(void) 969222623Srmacklem{ 970222623Srmacklem int i; 971222623Srmacklem 972222623Srmacklem for (i = 0; i < sock_fdcnt; i++) { 973222623Srmacklem if (sock_fd[i] >= 0) { 974222623Srmacklem shutdown(sock_fd[i], SHUT_RDWR); 975222623Srmacklem close(sock_fd[i]); 976222623Srmacklem } 977222623Srmacklem } 978222623Srmacklem} 979222623Srmacklem 980222623Srmacklemstatic void 981216587Scharnierusage(void) 98237663Scharnier{ 98337663Scharnier fprintf(stderr, 984192993Srmacklem "usage: mountd [-2] [-d] [-e] [-l] [-n] [-p <port>] [-r] " 985241568Srmacklem "[-S] [-h <bindip>] [export_file ...]\n"); 98637663Scharnier exit(1); 98737663Scharnier} 98837663Scharnier 9891558Srgrimes/* 9901558Srgrimes * The mount rpc service 9911558Srgrimes */ 9921558Srgrimesvoid 993216587Scharniermntsrv(struct svc_req *rqstp, SVCXPRT *transp) 9941558Srgrimes{ 9951558Srgrimes struct exportlist *ep; 9961558Srgrimes struct dirlist *dp; 9979336Sdfr struct fhreturn fhr; 9981558Srgrimes struct stat stb; 9991558Srgrimes struct statfs fsb; 100074462Salfred char host[NI_MAXHOST], numerichost[NI_MAXHOST]; 100174462Salfred int lookup_failed = 1; 100274462Salfred struct sockaddr *saddr; 10039336Sdfr u_short sport; 1004194880Sdfr char rpcpath[MNTPATHLEN + 1], dirpath[MAXPATHLEN]; 100528911Sguido int bad = 0, defset, hostset; 10069336Sdfr sigset_t sighup_mask; 1007240902Srmacklem int numsecflavors, *secflavorsp; 10081558Srgrimes 10099336Sdfr sigemptyset(&sighup_mask); 10109336Sdfr sigaddset(&sighup_mask, SIGHUP); 101174462Salfred saddr = svc_getrpccaller(transp)->buf; 101274462Salfred switch (saddr->sa_family) { 101374462Salfred case AF_INET6: 101475635Siedowse sport = ntohs(((struct sockaddr_in6 *)saddr)->sin6_port); 101574462Salfred break; 101674462Salfred case AF_INET: 101775635Siedowse sport = ntohs(((struct sockaddr_in *)saddr)->sin_port); 101874462Salfred break; 101974462Salfred default: 102074462Salfred syslog(LOG_ERR, "request from unknown address family"); 102174462Salfred return; 102274462Salfred } 102374462Salfred lookup_failed = getnameinfo(saddr, saddr->sa_len, host, sizeof host, 102474462Salfred NULL, 0, 0); 102574462Salfred getnameinfo(saddr, saddr->sa_len, numerichost, 102674462Salfred sizeof numerichost, NULL, 0, NI_NUMERICHOST); 10271558Srgrimes switch (rqstp->rq_proc) { 10281558Srgrimes case NULLPROC: 1029121556Speter if (!svc_sendreply(transp, (xdrproc_t)xdr_void, NULL)) 103037663Scharnier syslog(LOG_ERR, "can't send reply"); 10311558Srgrimes return; 1032194880Sdfr case MOUNTPROC_MNT: 10339336Sdfr if (sport >= IPPORT_RESERVED && resvport_only) { 103431656Sguido syslog(LOG_NOTICE, 103531656Sguido "mount request from %s from unprivileged port", 103674462Salfred numerichost); 10371558Srgrimes svcerr_weakauth(transp); 10381558Srgrimes return; 10391558Srgrimes } 1040121556Speter if (!svc_getargs(transp, (xdrproc_t)xdr_dir, rpcpath)) { 104131656Sguido syslog(LOG_NOTICE, "undecodable mount request from %s", 104274462Salfred numerichost); 10431558Srgrimes svcerr_decode(transp); 10441558Srgrimes return; 10451558Srgrimes } 10461558Srgrimes 10471558Srgrimes /* 10481558Srgrimes * Get the real pathname and make sure it is a directory 10499336Sdfr * or a regular file if the -r option was specified 10509336Sdfr * and it exists. 10511558Srgrimes */ 105251968Salfred if (realpath(rpcpath, dirpath) == NULL || 10531558Srgrimes stat(dirpath, &stb) < 0 || 10541558Srgrimes statfs(dirpath, &fsb) < 0) { 10551558Srgrimes chdir("/"); /* Just in case realpath doesn't */ 105631656Sguido syslog(LOG_NOTICE, 105737663Scharnier "mount request from %s for non existent path %s", 105874462Salfred numerichost, dirpath); 10591558Srgrimes if (debug) 106037663Scharnier warnx("stat failed on %s", dirpath); 106128911Sguido bad = ENOENT; /* We will send error reply later */ 10621558Srgrimes } 1063330092Srpokala if (!bad && 1064330092Srpokala !S_ISDIR(stb.st_mode) && 1065330092Srpokala (dir_only || !S_ISREG(stb.st_mode))) { 1066330092Srpokala syslog(LOG_NOTICE, 1067330092Srpokala "mount request from %s for non-directory path %s", 1068330092Srpokala numerichost, dirpath); 1069330092Srpokala if (debug) 1070330092Srpokala warnx("mounting non-directory %s", dirpath); 1071330092Srpokala bad = ENOTDIR; /* We will send error reply later */ 1072330092Srpokala } 10731558Srgrimes 10741558Srgrimes /* Check in the exports list */ 10759336Sdfr sigprocmask(SIG_BLOCK, &sighup_mask, NULL); 1076330092Srpokala if (bad) 1077330092Srpokala ep = NULL; 1078330092Srpokala else 1079330092Srpokala ep = ex_search(&fsb.f_fsid); 10809336Sdfr hostset = defset = 0; 1081240902Srmacklem if (ep && (chk_host(ep->ex_defdir, saddr, &defset, &hostset, 1082240902Srmacklem &numsecflavors, &secflavorsp) || 10831558Srgrimes ((dp = dirp_search(ep->ex_dirl, dirpath)) && 1084240902Srmacklem chk_host(dp, saddr, &defset, &hostset, &numsecflavors, 1085240902Srmacklem &secflavorsp)) || 108674462Salfred (defset && scan_tree(ep->ex_defdir, saddr) == 0 && 108774462Salfred scan_tree(ep->ex_dirl, saddr) == 0))) { 108828911Sguido if (bad) { 1089121556Speter if (!svc_sendreply(transp, (xdrproc_t)xdr_long, 109028911Sguido (caddr_t)&bad)) 109137663Scharnier syslog(LOG_ERR, "can't send reply"); 109228911Sguido sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 109328911Sguido return; 109428911Sguido } 1095240902Srmacklem if (hostset & DP_HOSTSET) { 10969336Sdfr fhr.fhr_flag = hostset; 1097240902Srmacklem fhr.fhr_numsecflavors = numsecflavors; 1098240902Srmacklem fhr.fhr_secflavors = secflavorsp; 1099240902Srmacklem } else { 11009336Sdfr fhr.fhr_flag = defset; 1101240902Srmacklem fhr.fhr_numsecflavors = ep->ex_defnumsecflavors; 1102240902Srmacklem fhr.fhr_secflavors = ep->ex_defsecflavors; 1103240902Srmacklem } 11049336Sdfr fhr.fhr_vers = rqstp->rq_vers; 11051558Srgrimes /* Get the file handle */ 110623681Speter memset(&fhr.fhr_fh, 0, sizeof(nfsfh_t)); 11079336Sdfr if (getfh(dirpath, (fhandle_t *)&fhr.fhr_fh) < 0) { 11081558Srgrimes bad = errno; 110937663Scharnier syslog(LOG_ERR, "can't get fh for %s", dirpath); 1110121556Speter if (!svc_sendreply(transp, (xdrproc_t)xdr_long, 11111558Srgrimes (caddr_t)&bad)) 111237663Scharnier syslog(LOG_ERR, "can't send reply"); 11139336Sdfr sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 11141558Srgrimes return; 11151558Srgrimes } 1116121556Speter if (!svc_sendreply(transp, (xdrproc_t)xdr_fhs, 1117121556Speter (caddr_t)&fhr)) 111837663Scharnier syslog(LOG_ERR, "can't send reply"); 111974462Salfred if (!lookup_failed) 112074462Salfred add_mlist(host, dirpath); 11211558Srgrimes else 112274462Salfred add_mlist(numerichost, dirpath); 11231558Srgrimes if (debug) 112437663Scharnier warnx("mount successful"); 1125121767Speter if (dolog) 112631656Sguido syslog(LOG_NOTICE, 112731656Sguido "mount request succeeded from %s for %s", 112874462Salfred numerichost, dirpath); 112931656Sguido } else { 1130330092Srpokala if (!bad) 1131330092Srpokala bad = EACCES; 113231656Sguido syslog(LOG_NOTICE, 113331656Sguido "mount request denied from %s for %s", 113474462Salfred numerichost, dirpath); 113531656Sguido } 113628911Sguido 1137121556Speter if (bad && !svc_sendreply(transp, (xdrproc_t)xdr_long, 1138121556Speter (caddr_t)&bad)) 113937663Scharnier syslog(LOG_ERR, "can't send reply"); 11409336Sdfr sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 11411558Srgrimes return; 1142194880Sdfr case MOUNTPROC_DUMP: 1143121556Speter if (!svc_sendreply(transp, (xdrproc_t)xdr_mlist, (caddr_t)NULL)) 114437663Scharnier syslog(LOG_ERR, "can't send reply"); 1145121767Speter else if (dolog) 114631656Sguido syslog(LOG_NOTICE, 114731656Sguido "dump request succeeded from %s", 114874462Salfred numerichost); 11491558Srgrimes return; 1150194880Sdfr case MOUNTPROC_UMNT: 11519336Sdfr if (sport >= IPPORT_RESERVED && resvport_only) { 115231656Sguido syslog(LOG_NOTICE, 115331656Sguido "umount request from %s from unprivileged port", 115474462Salfred numerichost); 11551558Srgrimes svcerr_weakauth(transp); 11561558Srgrimes return; 11571558Srgrimes } 1158121556Speter if (!svc_getargs(transp, (xdrproc_t)xdr_dir, rpcpath)) { 115931656Sguido syslog(LOG_NOTICE, "undecodable umount request from %s", 116074462Salfred numerichost); 11611558Srgrimes svcerr_decode(transp); 11621558Srgrimes return; 11631558Srgrimes } 116451968Salfred if (realpath(rpcpath, dirpath) == NULL) { 116551968Salfred syslog(LOG_NOTICE, "umount request from %s " 116651968Salfred "for non existent path %s", 116774462Salfred numerichost, dirpath); 116851968Salfred } 1169121556Speter if (!svc_sendreply(transp, (xdrproc_t)xdr_void, (caddr_t)NULL)) 117037663Scharnier syslog(LOG_ERR, "can't send reply"); 117174462Salfred if (!lookup_failed) 117275635Siedowse del_mlist(host, dirpath); 117375635Siedowse del_mlist(numerichost, dirpath); 1174121767Speter if (dolog) 117531656Sguido syslog(LOG_NOTICE, 117631656Sguido "umount request succeeded from %s for %s", 117774462Salfred numerichost, dirpath); 11781558Srgrimes return; 1179194880Sdfr case MOUNTPROC_UMNTALL: 11809336Sdfr if (sport >= IPPORT_RESERVED && resvport_only) { 118131656Sguido syslog(LOG_NOTICE, 118231656Sguido "umountall request from %s from unprivileged port", 118374462Salfred numerichost); 11841558Srgrimes svcerr_weakauth(transp); 11851558Srgrimes return; 11861558Srgrimes } 1187121556Speter if (!svc_sendreply(transp, (xdrproc_t)xdr_void, (caddr_t)NULL)) 118837663Scharnier syslog(LOG_ERR, "can't send reply"); 118974462Salfred if (!lookup_failed) 119075635Siedowse del_mlist(host, NULL); 119175635Siedowse del_mlist(numerichost, NULL); 1192121767Speter if (dolog) 119331656Sguido syslog(LOG_NOTICE, 119431656Sguido "umountall request succeeded from %s", 119574462Salfred numerichost); 11961558Srgrimes return; 1197194880Sdfr case MOUNTPROC_EXPORT: 1198121556Speter if (!svc_sendreply(transp, (xdrproc_t)xdr_explist, (caddr_t)NULL)) 1199121556Speter if (!svc_sendreply(transp, (xdrproc_t)xdr_explist_brief, 1200121556Speter (caddr_t)NULL)) 1201100117Salfred syslog(LOG_ERR, "can't send reply"); 1202121767Speter if (dolog) 120331656Sguido syslog(LOG_NOTICE, 120431656Sguido "export request succeeded from %s", 120574462Salfred numerichost); 12061558Srgrimes return; 12071558Srgrimes default: 12081558Srgrimes svcerr_noproc(transp); 12091558Srgrimes return; 12101558Srgrimes } 12111558Srgrimes} 12121558Srgrimes 12131558Srgrimes/* 12141558Srgrimes * Xdr conversion for a dirpath string 12151558Srgrimes */ 1216285128Straszstatic int 1217216587Scharnierxdr_dir(XDR *xdrsp, char *dirp) 12181558Srgrimes{ 1219194880Sdfr return (xdr_string(xdrsp, &dirp, MNTPATHLEN)); 12201558Srgrimes} 12211558Srgrimes 12221558Srgrimes/* 12239336Sdfr * Xdr routine to generate file handle reply 12241558Srgrimes */ 1225285128Straszstatic int 1226216587Scharnierxdr_fhs(XDR *xdrsp, caddr_t cp) 12271558Srgrimes{ 122892806Sobrien struct fhreturn *fhrp = (struct fhreturn *)cp; 12299336Sdfr u_long ok = 0, len, auth; 1230184588Sdfr int i; 12311558Srgrimes 12321558Srgrimes if (!xdr_long(xdrsp, &ok)) 12331558Srgrimes return (0); 12349336Sdfr switch (fhrp->fhr_vers) { 12359336Sdfr case 1: 12369336Sdfr return (xdr_opaque(xdrsp, (caddr_t)&fhrp->fhr_fh, NFSX_V2FH)); 12379336Sdfr case 3: 12389336Sdfr len = NFSX_V3FH; 12399336Sdfr if (!xdr_long(xdrsp, &len)) 12409336Sdfr return (0); 12419336Sdfr if (!xdr_opaque(xdrsp, (caddr_t)&fhrp->fhr_fh, len)) 12429336Sdfr return (0); 1243184588Sdfr if (fhrp->fhr_numsecflavors) { 1244184588Sdfr if (!xdr_int(xdrsp, &fhrp->fhr_numsecflavors)) 1245184588Sdfr return (0); 1246184588Sdfr for (i = 0; i < fhrp->fhr_numsecflavors; i++) 1247184588Sdfr if (!xdr_int(xdrsp, &fhrp->fhr_secflavors[i])) 1248184588Sdfr return (0); 1249184588Sdfr return (1); 1250184588Sdfr } else { 1251184588Sdfr auth = AUTH_SYS; 1252184588Sdfr len = 1; 1253184588Sdfr if (!xdr_long(xdrsp, &len)) 1254184588Sdfr return (0); 1255184588Sdfr return (xdr_long(xdrsp, &auth)); 1256184588Sdfr } 1257298089Spfg } 12589336Sdfr return (0); 12591558Srgrimes} 12601558Srgrimes 1261285128Straszstatic int 1262216587Scharnierxdr_mlist(XDR *xdrsp, caddr_t cp __unused) 12631558Srgrimes{ 12641558Srgrimes struct mountlist *mlp; 12651558Srgrimes int true = 1; 12661558Srgrimes int false = 0; 12671558Srgrimes char *strp; 12681558Srgrimes 1269324955Smanu SLIST_FOREACH(mlp, &mlhead, next) { 12701558Srgrimes if (!xdr_bool(xdrsp, &true)) 12711558Srgrimes return (0); 12721558Srgrimes strp = &mlp->ml_host[0]; 1273194880Sdfr if (!xdr_string(xdrsp, &strp, MNTNAMLEN)) 12741558Srgrimes return (0); 12751558Srgrimes strp = &mlp->ml_dirp[0]; 1276194880Sdfr if (!xdr_string(xdrsp, &strp, MNTPATHLEN)) 12771558Srgrimes return (0); 12781558Srgrimes } 12791558Srgrimes if (!xdr_bool(xdrsp, &false)) 12801558Srgrimes return (0); 12811558Srgrimes return (1); 12821558Srgrimes} 12831558Srgrimes 12841558Srgrimes/* 12851558Srgrimes * Xdr conversion for export list 12861558Srgrimes */ 1287285128Straszstatic int 1288216587Scharnierxdr_explist_common(XDR *xdrsp, caddr_t cp __unused, int brief) 12891558Srgrimes{ 12901558Srgrimes struct exportlist *ep; 12911558Srgrimes int false = 0; 12929336Sdfr int putdef; 12939336Sdfr sigset_t sighup_mask; 12941558Srgrimes 12959336Sdfr sigemptyset(&sighup_mask); 12969336Sdfr sigaddset(&sighup_mask, SIGHUP); 12979336Sdfr sigprocmask(SIG_BLOCK, &sighup_mask, NULL); 1298324955Smanu 1299324955Smanu SLIST_FOREACH(ep, &exphead, entries) { 13001558Srgrimes putdef = 0; 1301100117Salfred if (put_exlist(ep->ex_dirl, xdrsp, ep->ex_defdir, 1302100117Salfred &putdef, brief)) 13031558Srgrimes goto errout; 13041558Srgrimes if (ep->ex_defdir && putdef == 0 && 13051558Srgrimes put_exlist(ep->ex_defdir, xdrsp, (struct dirlist *)NULL, 1306100117Salfred &putdef, brief)) 13071558Srgrimes goto errout; 13081558Srgrimes } 13099336Sdfr sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 13101558Srgrimes if (!xdr_bool(xdrsp, &false)) 13111558Srgrimes return (0); 13121558Srgrimes return (1); 13131558Srgrimeserrout: 13149336Sdfr sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 13151558Srgrimes return (0); 13161558Srgrimes} 13171558Srgrimes 13181558Srgrimes/* 13191558Srgrimes * Called from xdr_explist() to traverse the tree and export the 13201558Srgrimes * directory paths. 13211558Srgrimes */ 1322285128Straszstatic int 1323216587Scharnierput_exlist(struct dirlist *dp, XDR *xdrsp, struct dirlist *adp, int *putdefp, 1324216587Scharnier int brief) 13251558Srgrimes{ 13261558Srgrimes struct grouplist *grp; 13271558Srgrimes struct hostlist *hp; 13281558Srgrimes int true = 1; 13291558Srgrimes int false = 0; 13301558Srgrimes int gotalldir = 0; 13311558Srgrimes char *strp; 13321558Srgrimes 13331558Srgrimes if (dp) { 1334100117Salfred if (put_exlist(dp->dp_left, xdrsp, adp, putdefp, brief)) 13351558Srgrimes return (1); 13361558Srgrimes if (!xdr_bool(xdrsp, &true)) 13371558Srgrimes return (1); 13381558Srgrimes strp = dp->dp_dirp; 1339194880Sdfr if (!xdr_string(xdrsp, &strp, MNTPATHLEN)) 13401558Srgrimes return (1); 13411558Srgrimes if (adp && !strcmp(dp->dp_dirp, adp->dp_dirp)) { 13421558Srgrimes gotalldir = 1; 13431558Srgrimes *putdefp = 1; 13441558Srgrimes } 1345100117Salfred if (brief) { 1346100117Salfred if (!xdr_bool(xdrsp, &true)) 1347100117Salfred return (1); 1348100117Salfred strp = "(...)"; 1349194880Sdfr if (!xdr_string(xdrsp, &strp, MNTPATHLEN)) 1350100117Salfred return (1); 1351100117Salfred } else if ((dp->dp_flag & DP_DEFSET) == 0 && 13521558Srgrimes (gotalldir == 0 || (adp->dp_flag & DP_DEFSET) == 0)) { 13531558Srgrimes hp = dp->dp_hosts; 13541558Srgrimes while (hp) { 13551558Srgrimes grp = hp->ht_grp; 13561558Srgrimes if (grp->gr_type == GT_HOST) { 13571558Srgrimes if (!xdr_bool(xdrsp, &true)) 13581558Srgrimes return (1); 135974462Salfred strp = grp->gr_ptr.gt_addrinfo->ai_canonname; 13608871Srgrimes if (!xdr_string(xdrsp, &strp, 1361194880Sdfr MNTNAMLEN)) 13621558Srgrimes return (1); 13631558Srgrimes } else if (grp->gr_type == GT_NET) { 13641558Srgrimes if (!xdr_bool(xdrsp, &true)) 13651558Srgrimes return (1); 13661558Srgrimes strp = grp->gr_ptr.gt_net.nt_name; 13678871Srgrimes if (!xdr_string(xdrsp, &strp, 1368194880Sdfr MNTNAMLEN)) 13691558Srgrimes return (1); 13701558Srgrimes } 13711558Srgrimes hp = hp->ht_next; 13721558Srgrimes if (gotalldir && hp == (struct hostlist *)NULL) { 13731558Srgrimes hp = adp->dp_hosts; 13741558Srgrimes gotalldir = 0; 13751558Srgrimes } 13761558Srgrimes } 13771558Srgrimes } 13781558Srgrimes if (!xdr_bool(xdrsp, &false)) 13791558Srgrimes return (1); 1380100117Salfred if (put_exlist(dp->dp_right, xdrsp, adp, putdefp, brief)) 13811558Srgrimes return (1); 13821558Srgrimes } 13831558Srgrimes return (0); 13841558Srgrimes} 13851558Srgrimes 1386285128Straszstatic int 1387216587Scharnierxdr_explist(XDR *xdrsp, caddr_t cp) 1388100117Salfred{ 1389100117Salfred 1390100117Salfred return xdr_explist_common(xdrsp, cp, 0); 1391100117Salfred} 1392100117Salfred 1393285128Straszstatic int 1394216587Scharnierxdr_explist_brief(XDR *xdrsp, caddr_t cp) 1395100117Salfred{ 1396100117Salfred 1397100117Salfred return xdr_explist_common(xdrsp, cp, 1); 1398100117Salfred} 1399100117Salfred 1400285128Straszstatic char *line; 1401285128Straszstatic size_t linesize; 1402285128Straszstatic FILE *exp_file; 14031558Srgrimes 14041558Srgrimes/* 1405166440Spjd * Get the export list from one, currently open file 14061558Srgrimes */ 1407166440Spjdstatic void 1408216587Scharnierget_exportlist_one(void) 14091558Srgrimes{ 1410324955Smanu struct exportlist *ep; 14111558Srgrimes struct grouplist *grp, *tgrp; 14121558Srgrimes struct dirlist *dirhead; 1413166440Spjd struct statfs fsb; 141472650Sgreen struct xucred anon; 14151558Srgrimes char *cp, *endcp, *dirp, *hst, *usr, *dom, savedc; 1416166440Spjd int len, has_host, exflags, got_nondir, dirplen, netgrp; 14171558Srgrimes 1418192934Srmacklem v4root_phase = 0; 14191558Srgrimes dirhead = (struct dirlist *)NULL; 14201558Srgrimes while (get_line()) { 14211558Srgrimes if (debug) 142237663Scharnier warnx("got line %s", line); 14231558Srgrimes cp = line; 14241558Srgrimes nextfield(&cp, &endcp); 14251558Srgrimes if (*cp == '#') 14261558Srgrimes goto nextline; 14271558Srgrimes 14281558Srgrimes /* 14291558Srgrimes * Set defaults. 14301558Srgrimes */ 14311558Srgrimes has_host = FALSE; 14321558Srgrimes anon = def_anon; 14331558Srgrimes exflags = MNT_EXPORTED; 14341558Srgrimes got_nondir = 0; 14351558Srgrimes opt_flags = 0; 14361558Srgrimes ep = (struct exportlist *)NULL; 1437192934Srmacklem dirp = NULL; 14381558Srgrimes 14391558Srgrimes /* 1440192934Srmacklem * Handle the V4 root dir. 1441192934Srmacklem */ 1442192934Srmacklem if (*cp == 'V' && *(cp + 1) == '4' && *(cp + 2) == ':') { 1443192934Srmacklem /* 1444192934Srmacklem * V4: just indicates that it is the v4 root point, 1445192934Srmacklem * so skip over that and set v4root_phase. 1446192934Srmacklem */ 1447192934Srmacklem if (v4root_phase > 0) { 1448192934Srmacklem syslog(LOG_ERR, "V4:duplicate line, ignored"); 1449192934Srmacklem goto nextline; 1450192934Srmacklem } 1451192934Srmacklem v4root_phase = 1; 1452192934Srmacklem cp += 3; 1453192934Srmacklem nextfield(&cp, &endcp); 1454192934Srmacklem } 1455192934Srmacklem 1456192934Srmacklem /* 14571558Srgrimes * Create new exports list entry 14581558Srgrimes */ 14591558Srgrimes len = endcp-cp; 14601558Srgrimes tgrp = grp = get_grp(); 14611558Srgrimes while (len > 0) { 1462194880Sdfr if (len > MNTNAMLEN) { 1463329392Sbrd getexp_err(ep, tgrp, "mountpoint too long"); 14641558Srgrimes goto nextline; 14651558Srgrimes } 14661558Srgrimes if (*cp == '-') { 14671558Srgrimes if (ep == (struct exportlist *)NULL) { 1468329392Sbrd getexp_err(ep, tgrp, 1469329392Sbrd "flag before export path definition"); 14701558Srgrimes goto nextline; 14711558Srgrimes } 14721558Srgrimes if (debug) 147337663Scharnier warnx("doing opt %s", cp); 14741558Srgrimes got_nondir = 1; 14751558Srgrimes if (do_opt(&cp, &endcp, ep, grp, &has_host, 14761558Srgrimes &exflags, &anon)) { 1477329392Sbrd getexp_err(ep, tgrp, NULL); 14781558Srgrimes goto nextline; 14791558Srgrimes } 14801558Srgrimes } else if (*cp == '/') { 14811558Srgrimes savedc = *endcp; 14821558Srgrimes *endcp = '\0'; 1483192934Srmacklem if (v4root_phase > 1) { 1484192934Srmacklem if (dirp != NULL) { 1485329392Sbrd getexp_err(ep, tgrp, "Multiple V4 dirs"); 1486192934Srmacklem goto nextline; 1487192934Srmacklem } 1488192934Srmacklem } 14891558Srgrimes if (check_dirpath(cp) && 14901558Srgrimes statfs(cp, &fsb) >= 0) { 1491283008Srmacklem if ((fsb.f_flags & MNT_AUTOMOUNTED) != 0) 1492283008Srmacklem syslog(LOG_ERR, "Warning: exporting of " 1493283008Srmacklem "automounted fs %s not supported", cp); 14941558Srgrimes if (got_nondir) { 1495329392Sbrd getexp_err(ep, tgrp, "dirs must be first"); 14961558Srgrimes goto nextline; 14971558Srgrimes } 1498192934Srmacklem if (v4root_phase == 1) { 1499192934Srmacklem if (dirp != NULL) { 1500329392Sbrd getexp_err(ep, tgrp, "Multiple V4 dirs"); 15011558Srgrimes goto nextline; 15021558Srgrimes } 1503192934Srmacklem if (strlen(v4root_dirpath) == 0) { 1504192934Srmacklem strlcpy(v4root_dirpath, cp, 1505192934Srmacklem sizeof (v4root_dirpath)); 1506192934Srmacklem } else if (strcmp(v4root_dirpath, cp) 1507192934Srmacklem != 0) { 1508192934Srmacklem syslog(LOG_ERR, 1509192934Srmacklem "different V4 dirpath %s", cp); 1510329392Sbrd getexp_err(ep, tgrp, NULL); 1511192934Srmacklem goto nextline; 1512192934Srmacklem } 1513192934Srmacklem dirp = cp; 1514192934Srmacklem v4root_phase = 2; 1515192934Srmacklem got_nondir = 1; 1516192934Srmacklem ep = get_exp(); 15171558Srgrimes } else { 1518192934Srmacklem if (ep) { 1519192934Srmacklem if (ep->ex_fs.val[0] != 1520192934Srmacklem fsb.f_fsid.val[0] || 1521192934Srmacklem ep->ex_fs.val[1] != 1522192934Srmacklem fsb.f_fsid.val[1]) { 1523329392Sbrd getexp_err(ep, tgrp, 1524329392Sbrd "fsid mismatch"); 1525192934Srmacklem goto nextline; 1526192934Srmacklem } 1527192934Srmacklem } else { 1528192934Srmacklem /* 1529192934Srmacklem * See if this directory is already 1530192934Srmacklem * in the list. 1531192934Srmacklem */ 1532192934Srmacklem ep = ex_search(&fsb.f_fsid); 1533192934Srmacklem if (ep == (struct exportlist *)NULL) { 1534192934Srmacklem ep = get_exp(); 1535192934Srmacklem ep->ex_fs = fsb.f_fsid; 1536324234Smanu ep->ex_fsdir = strdup(fsb.f_mntonname); 1537324234Smanu if (ep->ex_fsdir == NULL) 1538192934Srmacklem out_of_mem(); 1539192934Srmacklem if (debug) 1540192934Srmacklem warnx( 1541192934Srmacklem "making new ep fs=0x%x,0x%x", 1542192934Srmacklem fsb.f_fsid.val[0], 1543192934Srmacklem fsb.f_fsid.val[1]); 1544192934Srmacklem } else if (debug) 1545192934Srmacklem warnx("found ep fs=0x%x,0x%x", 1546192934Srmacklem fsb.f_fsid.val[0], 1547192934Srmacklem fsb.f_fsid.val[1]); 1548192934Srmacklem } 1549192934Srmacklem 15501558Srgrimes /* 1551192934Srmacklem * Add dirpath to export mount point. 15521558Srgrimes */ 1553192934Srmacklem dirp = add_expdir(&dirhead, cp, len); 1554192934Srmacklem dirplen = len; 15551558Srgrimes } 15561558Srgrimes } else { 1557329392Sbrd getexp_err(ep, tgrp, 1558329392Sbrd "symbolic link in export path or statfs failed"); 15591558Srgrimes goto nextline; 15601558Srgrimes } 15611558Srgrimes *endcp = savedc; 15621558Srgrimes } else { 15631558Srgrimes savedc = *endcp; 15641558Srgrimes *endcp = '\0'; 15651558Srgrimes got_nondir = 1; 15661558Srgrimes if (ep == (struct exportlist *)NULL) { 1567329392Sbrd getexp_err(ep, tgrp, 1568329392Sbrd "host(s) before export path definition"); 15691558Srgrimes goto nextline; 15701558Srgrimes } 15711558Srgrimes 15721558Srgrimes /* 15731558Srgrimes * Get the host or netgroup. 15741558Srgrimes */ 15751558Srgrimes setnetgrent(cp); 15761558Srgrimes netgrp = getnetgrent(&hst, &usr, &dom); 15771558Srgrimes do { 15781558Srgrimes if (has_host) { 15791558Srgrimes grp->gr_next = get_grp(); 15801558Srgrimes grp = grp->gr_next; 15811558Srgrimes } 15821558Srgrimes if (netgrp) { 158337003Sjoerg if (hst == 0) { 158437663Scharnier syslog(LOG_ERR, 158537663Scharnier "null hostname in netgroup %s, skipping", cp); 158637004Sjoerg grp->gr_type = GT_IGNORE; 158737003Sjoerg } else if (get_host(hst, grp, tgrp)) { 158837663Scharnier syslog(LOG_ERR, 158937663Scharnier "bad host %s in netgroup %s, skipping", hst, cp); 159029317Sjlemon grp->gr_type = GT_IGNORE; 15911558Srgrimes } 15927401Swpaul } else if (get_host(cp, grp, tgrp)) { 159337663Scharnier syslog(LOG_ERR, "bad host %s, skipping", cp); 159429317Sjlemon grp->gr_type = GT_IGNORE; 15951558Srgrimes } 15961558Srgrimes has_host = TRUE; 15971558Srgrimes } while (netgrp && getnetgrent(&hst, &usr, &dom)); 15981558Srgrimes endnetgrent(); 15991558Srgrimes *endcp = savedc; 16001558Srgrimes } 16011558Srgrimes cp = endcp; 16021558Srgrimes nextfield(&cp, &endcp); 16031558Srgrimes len = endcp - cp; 16041558Srgrimes } 16051558Srgrimes if (check_options(dirhead)) { 1606329392Sbrd getexp_err(ep, tgrp, NULL); 16071558Srgrimes goto nextline; 16081558Srgrimes } 16091558Srgrimes if (!has_host) { 161075641Siedowse grp->gr_type = GT_DEFAULT; 16111558Srgrimes if (debug) 161237663Scharnier warnx("adding a default entry"); 16131558Srgrimes 16141558Srgrimes /* 16151558Srgrimes * Don't allow a network export coincide with a list of 16161558Srgrimes * host(s) on the same line. 16171558Srgrimes */ 16181558Srgrimes } else if ((opt_flags & OP_NET) && tgrp->gr_next) { 1619329392Sbrd getexp_err(ep, tgrp, "network/host conflict"); 16201558Srgrimes goto nextline; 162129317Sjlemon 162274462Salfred /* 162374462Salfred * If an export list was specified on this line, make sure 162429317Sjlemon * that we have at least one valid entry, otherwise skip it. 162529317Sjlemon */ 162629317Sjlemon } else { 162729317Sjlemon grp = tgrp; 162874462Salfred while (grp && grp->gr_type == GT_IGNORE) 162929317Sjlemon grp = grp->gr_next; 163029317Sjlemon if (! grp) { 1631329392Sbrd getexp_err(ep, tgrp, "no valid entries"); 163229317Sjlemon goto nextline; 163329317Sjlemon } 16341558Srgrimes } 16351558Srgrimes 1636192934Srmacklem if (v4root_phase == 1) { 1637329392Sbrd getexp_err(ep, tgrp, "V4:root, no dirp, ignored"); 1638192934Srmacklem goto nextline; 1639192934Srmacklem } 1640192934Srmacklem 16411558Srgrimes /* 16421558Srgrimes * Loop through hosts, pushing the exports into the kernel. 16431558Srgrimes * After loop, tgrp points to the start of the list and 16441558Srgrimes * grp points to the last entry in the list. 16451558Srgrimes */ 16461558Srgrimes grp = tgrp; 16471558Srgrimes do { 164875635Siedowse if (do_mount(ep, grp, exflags, &anon, dirp, dirplen, 164975635Siedowse &fsb)) { 1650329392Sbrd getexp_err(ep, tgrp, NULL); 165175635Siedowse goto nextline; 165275635Siedowse } 16531558Srgrimes } while (grp->gr_next && (grp = grp->gr_next)); 16541558Srgrimes 16551558Srgrimes /* 1656192934Srmacklem * For V4: don't enter in mount lists. 1657192934Srmacklem */ 1658194773Srmacklem if (v4root_phase > 0 && v4root_phase <= 2) { 1659194773Srmacklem /* 1660194773Srmacklem * Since these structures aren't used by mountd, 1661194773Srmacklem * free them up now. 1662194773Srmacklem */ 1663194773Srmacklem if (ep != NULL) 1664194773Srmacklem free_exp(ep); 1665194773Srmacklem while (tgrp != NULL) { 1666194773Srmacklem grp = tgrp; 1667194773Srmacklem tgrp = tgrp->gr_next; 1668194773Srmacklem free_grp(grp); 1669194773Srmacklem } 1670192934Srmacklem goto nextline; 1671194773Srmacklem } 1672192934Srmacklem 1673192934Srmacklem /* 16741558Srgrimes * Success. Update the data structures. 16751558Srgrimes */ 16761558Srgrimes if (has_host) { 16779336Sdfr hang_dirp(dirhead, tgrp, ep, opt_flags); 16781558Srgrimes grp->gr_next = grphead; 16791558Srgrimes grphead = tgrp; 16801558Srgrimes } else { 16811558Srgrimes hang_dirp(dirhead, (struct grouplist *)NULL, ep, 16829336Sdfr opt_flags); 16831558Srgrimes free_grp(grp); 16841558Srgrimes } 16851558Srgrimes dirhead = (struct dirlist *)NULL; 16861558Srgrimes if ((ep->ex_flag & EX_LINKED) == 0) { 1687324955Smanu SLIST_INSERT_HEAD(&exphead, ep, entries); 16881558Srgrimes 16891558Srgrimes ep->ex_flag |= EX_LINKED; 16901558Srgrimes } 16911558Srgrimesnextline: 1692192934Srmacklem v4root_phase = 0; 16931558Srgrimes if (dirhead) { 16941558Srgrimes free_dir(dirhead); 16951558Srgrimes dirhead = (struct dirlist *)NULL; 16961558Srgrimes } 16971558Srgrimes } 16981558Srgrimes} 16991558Srgrimes 17001558Srgrimes/* 1701166440Spjd * Get the export list from all specified files 1702166440Spjd */ 1703285128Straszstatic void 1704216587Scharnierget_exportlist(void) 1705166440Spjd{ 1706166440Spjd struct exportlist *ep, *ep2; 1707166440Spjd struct grouplist *grp, *tgrp; 1708166440Spjd struct export_args export; 1709166440Spjd struct iovec *iov; 1710166440Spjd struct statfs *fsp, *mntbufp; 1711166440Spjd struct xvfsconf vfc; 1712166440Spjd char errmsg[255]; 1713230352Seadler int num, i; 1714166440Spjd int iovlen; 1715168684Spjd int done; 1716192934Srmacklem struct nfsex_args eargs; 1717166440Spjd 1718241568Srmacklem if (suspend_nfsd != 0) 1719241568Srmacklem (void)nfssvc(NFSSVC_SUSPENDNFSD, NULL); 1720192934Srmacklem v4root_dirpath[0] = '\0'; 1721166440Spjd bzero(&export, sizeof(export)); 1722166440Spjd export.ex_flags = MNT_DELEXPORT; 1723166440Spjd iov = NULL; 1724166440Spjd iovlen = 0; 1725166440Spjd bzero(errmsg, sizeof(errmsg)); 1726166440Spjd 1727166440Spjd /* 1728166440Spjd * First, get rid of the old list 1729166440Spjd */ 1730324955Smanu SLIST_FOREACH_SAFE(ep, &exphead, entries, ep2) { 1731324955Smanu SLIST_REMOVE(&exphead, ep, exportlist, entries); 1732324955Smanu free_exp(ep); 1733166440Spjd } 1734166440Spjd 1735166440Spjd grp = grphead; 1736166440Spjd while (grp) { 1737166440Spjd tgrp = grp; 1738166440Spjd grp = grp->gr_next; 1739166440Spjd free_grp(tgrp); 1740166440Spjd } 1741166440Spjd grphead = (struct grouplist *)NULL; 1742166440Spjd 1743166440Spjd /* 1744192934Srmacklem * and the old V4 root dir. 1745192934Srmacklem */ 1746192934Srmacklem bzero(&eargs, sizeof (eargs)); 1747192934Srmacklem eargs.export.ex_flags = MNT_DELEXPORT; 1748282214Strasz if (nfssvc(NFSSVC_V4ROOTEXPORT, (caddr_t)&eargs) < 0 && 1749192934Srmacklem errno != ENOENT) 1750192934Srmacklem syslog(LOG_ERR, "Can't delete exports for V4:"); 1751192934Srmacklem 1752192934Srmacklem /* 1753192934Srmacklem * and clear flag that notes if a public fh has been exported. 1754192934Srmacklem */ 1755192934Srmacklem has_publicfh = 0; 1756192934Srmacklem 1757192934Srmacklem /* 1758166440Spjd * And delete exports that are in the kernel for all local 1759166440Spjd * filesystems. 1760166440Spjd * XXX: Should know how to handle all local exportable filesystems. 1761166440Spjd */ 1762166440Spjd num = getmntinfo(&mntbufp, MNT_NOWAIT); 1763166440Spjd 1764166440Spjd if (num > 0) { 1765166440Spjd build_iovec(&iov, &iovlen, "fstype", NULL, 0); 1766166440Spjd build_iovec(&iov, &iovlen, "fspath", NULL, 0); 1767166440Spjd build_iovec(&iov, &iovlen, "from", NULL, 0); 1768166440Spjd build_iovec(&iov, &iovlen, "update", NULL, 0); 1769166440Spjd build_iovec(&iov, &iovlen, "export", &export, sizeof(export)); 1770166440Spjd build_iovec(&iov, &iovlen, "errmsg", errmsg, sizeof(errmsg)); 1771166440Spjd } 1772166440Spjd 1773166440Spjd for (i = 0; i < num; i++) { 1774166440Spjd fsp = &mntbufp[i]; 1775166440Spjd if (getvfsbyname(fsp->f_fstypename, &vfc) != 0) { 1776166440Spjd syslog(LOG_ERR, "getvfsbyname() failed for %s", 1777166440Spjd fsp->f_fstypename); 1778166440Spjd continue; 1779166440Spjd } 1780166440Spjd 1781166440Spjd /* 1782281699Ssjg * We do not need to delete "export" flag from 1783281699Ssjg * filesystems that do not have it set. 1784281699Ssjg */ 1785281699Ssjg if (!(fsp->f_flags & MNT_EXPORTED)) 1786281699Ssjg continue; 1787281699Ssjg /* 1788166440Spjd * Do not delete export for network filesystem by 1789166440Spjd * passing "export" arg to nmount(). 1790166440Spjd * It only makes sense to do this for local filesystems. 1791166440Spjd */ 1792166440Spjd if (vfc.vfc_flags & VFCF_NETWORK) 1793166440Spjd continue; 1794166440Spjd 1795166440Spjd iov[1].iov_base = fsp->f_fstypename; 1796166440Spjd iov[1].iov_len = strlen(fsp->f_fstypename) + 1; 1797166440Spjd iov[3].iov_base = fsp->f_mntonname; 1798166440Spjd iov[3].iov_len = strlen(fsp->f_mntonname) + 1; 1799166440Spjd iov[5].iov_base = fsp->f_mntfromname; 1800166440Spjd iov[5].iov_len = strlen(fsp->f_mntfromname) + 1; 1801270183Sbdrewery errmsg[0] = '\0'; 1802166440Spjd 1803278523Skib /* 1804278523Skib * EXDEV is returned when path exists but is not a 1805278523Skib * mount point. May happens if raced with unmount. 1806278523Skib */ 1807166440Spjd if (nmount(iov, iovlen, fsp->f_flags) < 0 && 1808278523Skib errno != ENOENT && errno != ENOTSUP && errno != EXDEV) { 1809166440Spjd syslog(LOG_ERR, 1810166440Spjd "can't delete exports for %s: %m %s", 1811166440Spjd fsp->f_mntonname, errmsg); 1812166440Spjd } 1813166440Spjd } 1814166440Spjd 1815166440Spjd if (iov != NULL) { 1816166440Spjd /* Free strings allocated by strdup() in getmntopts.c */ 1817166440Spjd free(iov[0].iov_base); /* fstype */ 1818166440Spjd free(iov[2].iov_base); /* fspath */ 1819166440Spjd free(iov[4].iov_base); /* from */ 1820166440Spjd free(iov[6].iov_base); /* update */ 1821166440Spjd free(iov[8].iov_base); /* export */ 1822166440Spjd free(iov[10].iov_base); /* errmsg */ 1823166440Spjd 1824166440Spjd /* free iov, allocated by realloc() */ 1825166440Spjd free(iov); 1826166440Spjd iovlen = 0; 1827166440Spjd } 1828166440Spjd 1829166440Spjd /* 1830166440Spjd * Read in the exports file and build the list, calling 1831166440Spjd * nmount() as we go along to push the export rules into the kernel. 1832166440Spjd */ 1833168684Spjd done = 0; 1834166440Spjd for (i = 0; exnames[i] != NULL; i++) { 1835166440Spjd if (debug) 1836166440Spjd warnx("reading exports from %s", exnames[i]); 1837166440Spjd if ((exp_file = fopen(exnames[i], "r")) == NULL) { 1838168684Spjd syslog(LOG_WARNING, "can't open %s", exnames[i]); 1839168684Spjd continue; 1840166440Spjd } 1841166440Spjd get_exportlist_one(); 1842166440Spjd fclose(exp_file); 1843168684Spjd done++; 1844166440Spjd } 1845168684Spjd if (done == 0) { 1846168684Spjd syslog(LOG_ERR, "can't open any exports file"); 1847168684Spjd exit(2); 1848168684Spjd } 1849192934Srmacklem 1850192934Srmacklem /* 1851192934Srmacklem * If there was no public fh, clear any previous one set. 1852192934Srmacklem */ 1853282214Strasz if (has_publicfh == 0) 1854192934Srmacklem (void) nfssvc(NFSSVC_NOPUBLICFH, NULL); 1855241568Srmacklem 1856241568Srmacklem /* Resume the nfsd. If they weren't suspended, this is harmless. */ 1857241568Srmacklem (void)nfssvc(NFSSVC_RESUMENFSD, NULL); 1858166440Spjd} 1859166440Spjd 1860166440Spjd/* 18611558Srgrimes * Allocate an export list element 18621558Srgrimes */ 1863285128Straszstatic struct exportlist * 1864216587Scharnierget_exp(void) 18651558Srgrimes{ 18661558Srgrimes struct exportlist *ep; 18671558Srgrimes 1868224003Sdelphij ep = (struct exportlist *)calloc(1, sizeof (struct exportlist)); 18691558Srgrimes if (ep == (struct exportlist *)NULL) 18701558Srgrimes out_of_mem(); 18711558Srgrimes return (ep); 18721558Srgrimes} 18731558Srgrimes 18741558Srgrimes/* 18751558Srgrimes * Allocate a group list element 18761558Srgrimes */ 1877285128Straszstatic struct grouplist * 1878216587Scharnierget_grp(void) 18791558Srgrimes{ 18801558Srgrimes struct grouplist *gp; 18811558Srgrimes 1882224003Sdelphij gp = (struct grouplist *)calloc(1, sizeof (struct grouplist)); 18831558Srgrimes if (gp == (struct grouplist *)NULL) 18841558Srgrimes out_of_mem(); 18851558Srgrimes return (gp); 18861558Srgrimes} 18871558Srgrimes 18881558Srgrimes/* 18891558Srgrimes * Clean up upon an error in get_exportlist(). 18901558Srgrimes */ 1891285128Straszstatic void 1892329392Sbrdgetexp_err(struct exportlist *ep, struct grouplist *grp, const char *reason) 18931558Srgrimes{ 18941558Srgrimes struct grouplist *tgrp; 18951558Srgrimes 1896329392Sbrd if (!(opt_flags & OP_QUIET)) { 1897329392Sbrd if (reason != NULL) 1898329392Sbrd syslog(LOG_ERR, "bad exports list line '%s': %s", line, 1899329392Sbrd reason); 1900329392Sbrd else 1901329392Sbrd syslog(LOG_ERR, "bad exports list line '%s'", line); 1902329392Sbrd } 19031558Srgrimes if (ep && (ep->ex_flag & EX_LINKED) == 0) 19041558Srgrimes free_exp(ep); 19051558Srgrimes while (grp) { 19061558Srgrimes tgrp = grp; 19071558Srgrimes grp = grp->gr_next; 19081558Srgrimes free_grp(tgrp); 19091558Srgrimes } 19101558Srgrimes} 19111558Srgrimes 19121558Srgrimes/* 19131558Srgrimes * Search the export list for a matching fs. 19141558Srgrimes */ 1915285128Straszstatic struct exportlist * 1916216587Scharnierex_search(fsid_t *fsid) 19171558Srgrimes{ 19181558Srgrimes struct exportlist *ep; 19191558Srgrimes 1920324955Smanu SLIST_FOREACH(ep, &exphead, entries) { 19211558Srgrimes if (ep->ex_fs.val[0] == fsid->val[0] && 19221558Srgrimes ep->ex_fs.val[1] == fsid->val[1]) 19231558Srgrimes return (ep); 19241558Srgrimes } 1925324955Smanu 19261558Srgrimes return (ep); 19271558Srgrimes} 19281558Srgrimes 19291558Srgrimes/* 19301558Srgrimes * Add a directory path to the list. 19311558Srgrimes */ 1932285128Straszstatic char * 1933216587Scharnieradd_expdir(struct dirlist **dpp, char *cp, int len) 19341558Srgrimes{ 19351558Srgrimes struct dirlist *dp; 19361558Srgrimes 1937324234Smanu dp = malloc(sizeof (struct dirlist)); 193837663Scharnier if (dp == (struct dirlist *)NULL) 193937663Scharnier out_of_mem(); 19401558Srgrimes dp->dp_left = *dpp; 19411558Srgrimes dp->dp_right = (struct dirlist *)NULL; 19421558Srgrimes dp->dp_flag = 0; 19431558Srgrimes dp->dp_hosts = (struct hostlist *)NULL; 1944324234Smanu dp->dp_dirp = strndup(cp, len); 1945324234Smanu if (dp->dp_dirp == NULL) 1946324234Smanu out_of_mem(); 19471558Srgrimes *dpp = dp; 19481558Srgrimes return (dp->dp_dirp); 19491558Srgrimes} 19501558Srgrimes 19511558Srgrimes/* 19521558Srgrimes * Hang the dir list element off the dirpath binary tree as required 19531558Srgrimes * and update the entry for host. 19541558Srgrimes */ 1955285128Straszstatic void 1956216587Scharnierhang_dirp(struct dirlist *dp, struct grouplist *grp, struct exportlist *ep, 1957216587Scharnier int flags) 19581558Srgrimes{ 19591558Srgrimes struct hostlist *hp; 19601558Srgrimes struct dirlist *dp2; 19611558Srgrimes 19629336Sdfr if (flags & OP_ALLDIRS) { 19631558Srgrimes if (ep->ex_defdir) 19641558Srgrimes free((caddr_t)dp); 19651558Srgrimes else 19661558Srgrimes ep->ex_defdir = dp; 19679336Sdfr if (grp == (struct grouplist *)NULL) { 19681558Srgrimes ep->ex_defdir->dp_flag |= DP_DEFSET; 1969240902Srmacklem /* Save the default security flavors list. */ 1970240902Srmacklem ep->ex_defnumsecflavors = ep->ex_numsecflavors; 1971240902Srmacklem if (ep->ex_numsecflavors > 0) 1972240902Srmacklem memcpy(ep->ex_defsecflavors, ep->ex_secflavors, 1973240902Srmacklem sizeof(ep->ex_secflavors)); 19749336Sdfr } else while (grp) { 19751558Srgrimes hp = get_ht(); 19761558Srgrimes hp->ht_grp = grp; 19771558Srgrimes hp->ht_next = ep->ex_defdir->dp_hosts; 19781558Srgrimes ep->ex_defdir->dp_hosts = hp; 1979240902Srmacklem /* Save the security flavors list for this host set. */ 1980240902Srmacklem grp->gr_numsecflavors = ep->ex_numsecflavors; 1981240902Srmacklem if (ep->ex_numsecflavors > 0) 1982240902Srmacklem memcpy(grp->gr_secflavors, ep->ex_secflavors, 1983240902Srmacklem sizeof(ep->ex_secflavors)); 19841558Srgrimes grp = grp->gr_next; 19851558Srgrimes } 19861558Srgrimes } else { 19871558Srgrimes 19881558Srgrimes /* 198937663Scharnier * Loop through the directories adding them to the tree. 19901558Srgrimes */ 19911558Srgrimes while (dp) { 19921558Srgrimes dp2 = dp->dp_left; 1993240902Srmacklem add_dlist(&ep->ex_dirl, dp, grp, flags, ep); 19941558Srgrimes dp = dp2; 19951558Srgrimes } 19961558Srgrimes } 19971558Srgrimes} 19981558Srgrimes 19991558Srgrimes/* 20001558Srgrimes * Traverse the binary tree either updating a node that is already there 20011558Srgrimes * for the new directory or adding the new node. 20021558Srgrimes */ 2003285128Straszstatic void 2004216587Scharnieradd_dlist(struct dirlist **dpp, struct dirlist *newdp, struct grouplist *grp, 2005240902Srmacklem int flags, struct exportlist *ep) 20061558Srgrimes{ 20071558Srgrimes struct dirlist *dp; 20081558Srgrimes struct hostlist *hp; 20091558Srgrimes int cmp; 20101558Srgrimes 20111558Srgrimes dp = *dpp; 20121558Srgrimes if (dp) { 20131558Srgrimes cmp = strcmp(dp->dp_dirp, newdp->dp_dirp); 20141558Srgrimes if (cmp > 0) { 2015240902Srmacklem add_dlist(&dp->dp_left, newdp, grp, flags, ep); 20161558Srgrimes return; 20171558Srgrimes } else if (cmp < 0) { 2018240902Srmacklem add_dlist(&dp->dp_right, newdp, grp, flags, ep); 20191558Srgrimes return; 20201558Srgrimes } else 20211558Srgrimes free((caddr_t)newdp); 20221558Srgrimes } else { 20231558Srgrimes dp = newdp; 20241558Srgrimes dp->dp_left = (struct dirlist *)NULL; 20251558Srgrimes *dpp = dp; 20261558Srgrimes } 20271558Srgrimes if (grp) { 20281558Srgrimes 20291558Srgrimes /* 20301558Srgrimes * Hang all of the host(s) off of the directory point. 20311558Srgrimes */ 20321558Srgrimes do { 20331558Srgrimes hp = get_ht(); 20341558Srgrimes hp->ht_grp = grp; 20351558Srgrimes hp->ht_next = dp->dp_hosts; 20361558Srgrimes dp->dp_hosts = hp; 2037240902Srmacklem /* Save the security flavors list for this host set. */ 2038240902Srmacklem grp->gr_numsecflavors = ep->ex_numsecflavors; 2039240902Srmacklem if (ep->ex_numsecflavors > 0) 2040240902Srmacklem memcpy(grp->gr_secflavors, ep->ex_secflavors, 2041240902Srmacklem sizeof(ep->ex_secflavors)); 20421558Srgrimes grp = grp->gr_next; 20431558Srgrimes } while (grp); 20449336Sdfr } else { 20451558Srgrimes dp->dp_flag |= DP_DEFSET; 2046240902Srmacklem /* Save the default security flavors list. */ 2047240902Srmacklem ep->ex_defnumsecflavors = ep->ex_numsecflavors; 2048240902Srmacklem if (ep->ex_numsecflavors > 0) 2049240902Srmacklem memcpy(ep->ex_defsecflavors, ep->ex_secflavors, 2050240902Srmacklem sizeof(ep->ex_secflavors)); 20519336Sdfr } 20521558Srgrimes} 20531558Srgrimes 20541558Srgrimes/* 20551558Srgrimes * Search for a dirpath on the export point. 20561558Srgrimes */ 2057285128Straszstatic struct dirlist * 2058216587Scharnierdirp_search(struct dirlist *dp, char *dirp) 20591558Srgrimes{ 20601558Srgrimes int cmp; 20611558Srgrimes 20621558Srgrimes if (dp) { 206374462Salfred cmp = strcmp(dp->dp_dirp, dirp); 20641558Srgrimes if (cmp > 0) 206574462Salfred return (dirp_search(dp->dp_left, dirp)); 20661558Srgrimes else if (cmp < 0) 206774462Salfred return (dirp_search(dp->dp_right, dirp)); 20681558Srgrimes else 20691558Srgrimes return (dp); 20701558Srgrimes } 20711558Srgrimes return (dp); 20721558Srgrimes} 20731558Srgrimes 20741558Srgrimes/* 20751558Srgrimes * Scan for a host match in a directory tree. 20761558Srgrimes */ 2077285128Straszstatic int 2078216587Scharnierchk_host(struct dirlist *dp, struct sockaddr *saddr, int *defsetp, 2079240902Srmacklem int *hostsetp, int *numsecflavors, int **secflavorsp) 20801558Srgrimes{ 20811558Srgrimes struct hostlist *hp; 20821558Srgrimes struct grouplist *grp; 208374462Salfred struct addrinfo *ai; 20841558Srgrimes 20851558Srgrimes if (dp) { 20861558Srgrimes if (dp->dp_flag & DP_DEFSET) 20879336Sdfr *defsetp = dp->dp_flag; 20881558Srgrimes hp = dp->dp_hosts; 20891558Srgrimes while (hp) { 20901558Srgrimes grp = hp->ht_grp; 20911558Srgrimes switch (grp->gr_type) { 20921558Srgrimes case GT_HOST: 209374462Salfred ai = grp->gr_ptr.gt_addrinfo; 209474462Salfred for (; ai; ai = ai->ai_next) { 209575801Siedowse if (!sacmp(ai->ai_addr, saddr, NULL)) { 209674462Salfred *hostsetp = 209774462Salfred (hp->ht_flag | DP_HOSTSET); 2098240902Srmacklem if (numsecflavors != NULL) { 2099240902Srmacklem *numsecflavors = 2100240902Srmacklem grp->gr_numsecflavors; 2101240902Srmacklem *secflavorsp = 2102240902Srmacklem grp->gr_secflavors; 2103240902Srmacklem } 210474462Salfred return (1); 210574462Salfred } 21069336Sdfr } 210775801Siedowse break; 21081558Srgrimes case GT_NET: 210975801Siedowse if (!sacmp(saddr, (struct sockaddr *) 211075801Siedowse &grp->gr_ptr.gt_net.nt_net, 211175801Siedowse (struct sockaddr *) 211275801Siedowse &grp->gr_ptr.gt_net.nt_mask)) { 211374462Salfred *hostsetp = (hp->ht_flag | DP_HOSTSET); 2114240902Srmacklem if (numsecflavors != NULL) { 2115240902Srmacklem *numsecflavors = 2116240902Srmacklem grp->gr_numsecflavors; 2117240902Srmacklem *secflavorsp = 2118240902Srmacklem grp->gr_secflavors; 2119240902Srmacklem } 212074462Salfred return (1); 212174462Salfred } 212275801Siedowse break; 212375801Siedowse } 21241558Srgrimes hp = hp->ht_next; 21251558Srgrimes } 21261558Srgrimes } 21271558Srgrimes return (0); 21281558Srgrimes} 21291558Srgrimes 21301558Srgrimes/* 21311558Srgrimes * Scan tree for a host that matches the address. 21321558Srgrimes */ 2133285128Straszstatic int 2134216587Scharnierscan_tree(struct dirlist *dp, struct sockaddr *saddr) 21351558Srgrimes{ 21369336Sdfr int defset, hostset; 21371558Srgrimes 21381558Srgrimes if (dp) { 21391558Srgrimes if (scan_tree(dp->dp_left, saddr)) 21401558Srgrimes return (1); 2141240902Srmacklem if (chk_host(dp, saddr, &defset, &hostset, NULL, NULL)) 21421558Srgrimes return (1); 21431558Srgrimes if (scan_tree(dp->dp_right, saddr)) 21441558Srgrimes return (1); 21451558Srgrimes } 21461558Srgrimes return (0); 21471558Srgrimes} 21481558Srgrimes 21491558Srgrimes/* 21501558Srgrimes * Traverse the dirlist tree and free it up. 21511558Srgrimes */ 2152285128Straszstatic void 2153216587Scharnierfree_dir(struct dirlist *dp) 21541558Srgrimes{ 21551558Srgrimes 21561558Srgrimes if (dp) { 21571558Srgrimes free_dir(dp->dp_left); 21581558Srgrimes free_dir(dp->dp_right); 21591558Srgrimes free_host(dp->dp_hosts); 2160324234Smanu free(dp->dp_dirp); 2161324234Smanu free(dp); 21621558Srgrimes } 21631558Srgrimes} 21641558Srgrimes 21651558Srgrimes/* 2166184588Sdfr * Parse a colon separated list of security flavors 2167184588Sdfr */ 2168285128Straszstatic int 2169216587Scharnierparsesec(char *seclist, struct exportlist *ep) 2170184588Sdfr{ 2171184588Sdfr char *cp, savedc; 2172184588Sdfr int flavor; 2173184588Sdfr 2174184588Sdfr ep->ex_numsecflavors = 0; 2175184588Sdfr for (;;) { 2176184588Sdfr cp = strchr(seclist, ':'); 2177184588Sdfr if (cp) { 2178184588Sdfr savedc = *cp; 2179184588Sdfr *cp = '\0'; 2180184588Sdfr } 2181184588Sdfr 2182184588Sdfr if (!strcmp(seclist, "sys")) 2183184588Sdfr flavor = AUTH_SYS; 2184184588Sdfr else if (!strcmp(seclist, "krb5")) 2185184588Sdfr flavor = RPCSEC_GSS_KRB5; 2186184588Sdfr else if (!strcmp(seclist, "krb5i")) 2187184588Sdfr flavor = RPCSEC_GSS_KRB5I; 2188184588Sdfr else if (!strcmp(seclist, "krb5p")) 2189184588Sdfr flavor = RPCSEC_GSS_KRB5P; 2190184588Sdfr else { 2191184588Sdfr if (cp) 2192184588Sdfr *cp = savedc; 2193184588Sdfr syslog(LOG_ERR, "bad sec flavor: %s", seclist); 2194184588Sdfr return (1); 2195184588Sdfr } 2196184588Sdfr if (ep->ex_numsecflavors == MAXSECFLAVORS) { 2197184588Sdfr if (cp) 2198184588Sdfr *cp = savedc; 2199184588Sdfr syslog(LOG_ERR, "too many sec flavors: %s", seclist); 2200184588Sdfr return (1); 2201184588Sdfr } 2202184588Sdfr ep->ex_secflavors[ep->ex_numsecflavors] = flavor; 2203184588Sdfr ep->ex_numsecflavors++; 2204184588Sdfr if (cp) { 2205184588Sdfr *cp = savedc; 2206184588Sdfr seclist = cp + 1; 2207184588Sdfr } else { 2208184588Sdfr break; 2209184588Sdfr } 2210184588Sdfr } 2211184588Sdfr return (0); 2212184588Sdfr} 2213184588Sdfr 2214184588Sdfr/* 22151558Srgrimes * Parse the option string and update fields. 22161558Srgrimes * Option arguments may either be -<option>=<value> or 22171558Srgrimes * -<option> <value> 22181558Srgrimes */ 2219285128Straszstatic int 2220216587Scharnierdo_opt(char **cpp, char **endcpp, struct exportlist *ep, struct grouplist *grp, 2221216587Scharnier int *has_hostp, int *exflagsp, struct xucred *cr) 22221558Srgrimes{ 22231558Srgrimes char *cpoptarg, *cpoptend; 22241558Srgrimes char *cp, *endcp, *cpopt, savedc, savedc2; 22251558Srgrimes int allflag, usedarg; 22261558Srgrimes 222751968Salfred savedc2 = '\0'; 22281558Srgrimes cpopt = *cpp; 22291558Srgrimes cpopt++; 22301558Srgrimes cp = *endcpp; 22311558Srgrimes savedc = *cp; 22321558Srgrimes *cp = '\0'; 22331558Srgrimes while (cpopt && *cpopt) { 22341558Srgrimes allflag = 1; 22351558Srgrimes usedarg = -2; 223637663Scharnier if ((cpoptend = strchr(cpopt, ','))) { 22371558Srgrimes *cpoptend++ = '\0'; 223837663Scharnier if ((cpoptarg = strchr(cpopt, '='))) 22391558Srgrimes *cpoptarg++ = '\0'; 22401558Srgrimes } else { 224137663Scharnier if ((cpoptarg = strchr(cpopt, '='))) 22421558Srgrimes *cpoptarg++ = '\0'; 22431558Srgrimes else { 22441558Srgrimes *cp = savedc; 22451558Srgrimes nextfield(&cp, &endcp); 22461558Srgrimes **endcpp = '\0'; 22471558Srgrimes if (endcp > cp && *cp != '-') { 22481558Srgrimes cpoptarg = cp; 22491558Srgrimes savedc2 = *endcp; 22501558Srgrimes *endcp = '\0'; 22511558Srgrimes usedarg = 0; 22521558Srgrimes } 22531558Srgrimes } 22541558Srgrimes } 22551558Srgrimes if (!strcmp(cpopt, "ro") || !strcmp(cpopt, "o")) { 22561558Srgrimes *exflagsp |= MNT_EXRDONLY; 22571558Srgrimes } else if (cpoptarg && (!strcmp(cpopt, "maproot") || 22581558Srgrimes !(allflag = strcmp(cpopt, "mapall")) || 22591558Srgrimes !strcmp(cpopt, "root") || !strcmp(cpopt, "r"))) { 22601558Srgrimes usedarg++; 22611558Srgrimes parsecred(cpoptarg, cr); 22621558Srgrimes if (allflag == 0) { 22631558Srgrimes *exflagsp |= MNT_EXPORTANON; 22641558Srgrimes opt_flags |= OP_MAPALL; 22651558Srgrimes } else 22661558Srgrimes opt_flags |= OP_MAPROOT; 22671558Srgrimes } else if (cpoptarg && (!strcmp(cpopt, "mask") || 226875801Siedowse !strcmp(cpopt, "m"))) { 22691558Srgrimes if (get_net(cpoptarg, &grp->gr_ptr.gt_net, 1)) { 227037663Scharnier syslog(LOG_ERR, "bad mask: %s", cpoptarg); 22711558Srgrimes return (1); 22721558Srgrimes } 22731558Srgrimes usedarg++; 22741558Srgrimes opt_flags |= OP_MASK; 22751558Srgrimes } else if (cpoptarg && (!strcmp(cpopt, "network") || 22761558Srgrimes !strcmp(cpopt, "n"))) { 227774462Salfred if (strchr(cpoptarg, '/') != NULL) { 227874462Salfred if (debug) 227974462Salfred fprintf(stderr, "setting OP_MASKLEN\n"); 228074462Salfred opt_flags |= OP_MASKLEN; 228174462Salfred } 22821558Srgrimes if (grp->gr_type != GT_NULL) { 228337663Scharnier syslog(LOG_ERR, "network/host conflict"); 22841558Srgrimes return (1); 22851558Srgrimes } else if (get_net(cpoptarg, &grp->gr_ptr.gt_net, 0)) { 228637663Scharnier syslog(LOG_ERR, "bad net: %s", cpoptarg); 22871558Srgrimes return (1); 22881558Srgrimes } 22891558Srgrimes grp->gr_type = GT_NET; 22901558Srgrimes *has_hostp = 1; 22911558Srgrimes usedarg++; 22921558Srgrimes opt_flags |= OP_NET; 22931558Srgrimes } else if (!strcmp(cpopt, "alldirs")) { 22941558Srgrimes opt_flags |= OP_ALLDIRS; 229527447Sdfr } else if (!strcmp(cpopt, "public")) { 229627447Sdfr *exflagsp |= MNT_EXPUBLIC; 229727447Sdfr } else if (!strcmp(cpopt, "webnfs")) { 229827447Sdfr *exflagsp |= (MNT_EXPUBLIC|MNT_EXRDONLY|MNT_EXPORTANON); 229927447Sdfr opt_flags |= OP_MAPALL; 230027447Sdfr } else if (cpoptarg && !strcmp(cpopt, "index")) { 230127447Sdfr ep->ex_indexfile = strdup(cpoptarg); 2302100336Sjoerg } else if (!strcmp(cpopt, "quiet")) { 2303100336Sjoerg opt_flags |= OP_QUIET; 2304247034Spluknet } else if (cpoptarg && !strcmp(cpopt, "sec")) { 2305184588Sdfr if (parsesec(cpoptarg, ep)) 2306184588Sdfr return (1); 2307184588Sdfr opt_flags |= OP_SEC; 2308184588Sdfr usedarg++; 23091558Srgrimes } else { 231037663Scharnier syslog(LOG_ERR, "bad opt %s", cpopt); 23111558Srgrimes return (1); 23121558Srgrimes } 23131558Srgrimes if (usedarg >= 0) { 23141558Srgrimes *endcp = savedc2; 23151558Srgrimes **endcpp = savedc; 23161558Srgrimes if (usedarg > 0) { 23171558Srgrimes *cpp = cp; 23181558Srgrimes *endcpp = endcp; 23191558Srgrimes } 23201558Srgrimes return (0); 23211558Srgrimes } 23221558Srgrimes cpopt = cpoptend; 23231558Srgrimes } 23241558Srgrimes **endcpp = savedc; 23251558Srgrimes return (0); 23261558Srgrimes} 23271558Srgrimes 23281558Srgrimes/* 23291558Srgrimes * Translate a character string to the corresponding list of network 23301558Srgrimes * addresses for a hostname. 23311558Srgrimes */ 2332285128Straszstatic int 2333216587Scharnierget_host(char *cp, struct grouplist *grp, struct grouplist *tgrp) 23341558Srgrimes{ 23357401Swpaul struct grouplist *checkgrp; 233675635Siedowse struct addrinfo *ai, *tai, hints; 233774462Salfred int ecode; 233874462Salfred char host[NI_MAXHOST]; 23391558Srgrimes 234074462Salfred if (grp->gr_type != GT_NULL) { 234174462Salfred syslog(LOG_ERR, "Bad netgroup type for ip host %s", cp); 23421558Srgrimes return (1); 23431558Srgrimes } 234474462Salfred memset(&hints, 0, sizeof hints); 234574462Salfred hints.ai_flags = AI_CANONNAME; 234674462Salfred hints.ai_protocol = IPPROTO_UDP; 234774462Salfred ecode = getaddrinfo(cp, NULL, &hints, &ai); 234874462Salfred if (ecode != 0) { 234975635Siedowse syslog(LOG_ERR,"can't get address info for host %s", cp); 235074462Salfred return 1; 235174462Salfred } 235274462Salfred grp->gr_ptr.gt_addrinfo = ai; 235374462Salfred while (ai != NULL) { 235474462Salfred if (ai->ai_canonname == NULL) { 235574462Salfred if (getnameinfo(ai->ai_addr, ai->ai_addrlen, host, 2356146187Sume sizeof host, NULL, 0, NI_NUMERICHOST) != 0) 235774462Salfred strlcpy(host, "?", sizeof(host)); 235874462Salfred ai->ai_canonname = strdup(host); 235974462Salfred ai->ai_flags |= AI_CANONNAME; 236075641Siedowse } 236174462Salfred if (debug) 236275635Siedowse fprintf(stderr, "got host %s\n", ai->ai_canonname); 236375635Siedowse /* 236475635Siedowse * Sanity check: make sure we don't already have an entry 236575635Siedowse * for this host in the grouplist. 236675635Siedowse */ 236775635Siedowse for (checkgrp = tgrp; checkgrp != NULL; 236875635Siedowse checkgrp = checkgrp->gr_next) { 236975635Siedowse if (checkgrp->gr_type != GT_HOST) 237075635Siedowse continue; 237175635Siedowse for (tai = checkgrp->gr_ptr.gt_addrinfo; tai != NULL; 237275635Siedowse tai = tai->ai_next) { 237375801Siedowse if (sacmp(tai->ai_addr, ai->ai_addr, NULL) != 0) 237475635Siedowse continue; 237575635Siedowse if (debug) 237675635Siedowse fprintf(stderr, 237775635Siedowse "ignoring duplicate host %s\n", 237875635Siedowse ai->ai_canonname); 237975635Siedowse grp->gr_type = GT_IGNORE; 238075635Siedowse return (0); 238175635Siedowse } 238275635Siedowse } 238374462Salfred ai = ai->ai_next; 23841558Srgrimes } 238575635Siedowse grp->gr_type = GT_HOST; 23861558Srgrimes return (0); 23871558Srgrimes} 23881558Srgrimes 23891558Srgrimes/* 23901558Srgrimes * Free up an exports list component 23911558Srgrimes */ 2392285128Straszstatic void 2393216587Scharnierfree_exp(struct exportlist *ep) 23941558Srgrimes{ 23951558Srgrimes 23961558Srgrimes if (ep->ex_defdir) { 23971558Srgrimes free_host(ep->ex_defdir->dp_hosts); 23981558Srgrimes free((caddr_t)ep->ex_defdir); 23991558Srgrimes } 24001558Srgrimes if (ep->ex_fsdir) 24011558Srgrimes free(ep->ex_fsdir); 240227447Sdfr if (ep->ex_indexfile) 240327447Sdfr free(ep->ex_indexfile); 24041558Srgrimes free_dir(ep->ex_dirl); 24051558Srgrimes free((caddr_t)ep); 24061558Srgrimes} 24071558Srgrimes 24081558Srgrimes/* 24091558Srgrimes * Free hosts. 24101558Srgrimes */ 2411285128Straszstatic void 2412216587Scharnierfree_host(struct hostlist *hp) 24131558Srgrimes{ 24141558Srgrimes struct hostlist *hp2; 24151558Srgrimes 24161558Srgrimes while (hp) { 24171558Srgrimes hp2 = hp; 24181558Srgrimes hp = hp->ht_next; 24191558Srgrimes free((caddr_t)hp2); 24201558Srgrimes } 24211558Srgrimes} 24221558Srgrimes 2423285128Straszstatic struct hostlist * 2424216587Scharnierget_ht(void) 24251558Srgrimes{ 24261558Srgrimes struct hostlist *hp; 24271558Srgrimes 24281558Srgrimes hp = (struct hostlist *)malloc(sizeof (struct hostlist)); 24291558Srgrimes if (hp == (struct hostlist *)NULL) 24301558Srgrimes out_of_mem(); 24311558Srgrimes hp->ht_next = (struct hostlist *)NULL; 24329336Sdfr hp->ht_flag = 0; 24331558Srgrimes return (hp); 24341558Srgrimes} 24351558Srgrimes 24361558Srgrimes/* 24371558Srgrimes * Out of memory, fatal 24381558Srgrimes */ 2439285128Straszstatic void 2440216587Scharnierout_of_mem(void) 24411558Srgrimes{ 24421558Srgrimes 244337663Scharnier syslog(LOG_ERR, "out of memory"); 24441558Srgrimes exit(2); 24451558Srgrimes} 24461558Srgrimes 24471558Srgrimes/* 2448158857Srodrigc * Do the nmount() syscall with the update flag to push the export info into 24491558Srgrimes * the kernel. 24501558Srgrimes */ 2451285128Straszstatic int 2452158857Srodrigcdo_mount(struct exportlist *ep, struct grouplist *grp, int exflags, 2453158857Srodrigc struct xucred *anoncrp, char *dirp, int dirplen, struct statfs *fsb) 24541558Srgrimes{ 245575841Siedowse struct statfs fsb1; 245674462Salfred struct addrinfo *ai; 2457282214Strasz struct export_args *eap; 2458158857Srodrigc char errmsg[255]; 2459158857Srodrigc char *cp; 24601558Srgrimes int done; 2461158857Srodrigc char savedc; 2462158857Srodrigc struct iovec *iov; 2463184588Sdfr int i, iovlen; 2464158857Srodrigc int ret; 2465192934Srmacklem struct nfsex_args nfsea; 24661558Srgrimes 2467282214Strasz eap = &nfsea.export; 2468192934Srmacklem 2469158857Srodrigc cp = NULL; 2470158857Srodrigc savedc = '\0'; 2471158857Srodrigc iov = NULL; 2472158857Srodrigc iovlen = 0; 2473158857Srodrigc ret = 0; 247475801Siedowse 2475192934Srmacklem bzero(eap, sizeof (struct export_args)); 2476158857Srodrigc bzero(errmsg, sizeof(errmsg)); 2477192934Srmacklem eap->ex_flags = exflags; 2478192934Srmacklem eap->ex_anon = *anoncrp; 2479192934Srmacklem eap->ex_indexfile = ep->ex_indexfile; 248075641Siedowse if (grp->gr_type == GT_HOST) 248174462Salfred ai = grp->gr_ptr.gt_addrinfo; 248275641Siedowse else 248375641Siedowse ai = NULL; 2484192934Srmacklem eap->ex_numsecflavors = ep->ex_numsecflavors; 2485192934Srmacklem for (i = 0; i < eap->ex_numsecflavors; i++) 2486192934Srmacklem eap->ex_secflavors[i] = ep->ex_secflavors[i]; 2487192934Srmacklem if (eap->ex_numsecflavors == 0) { 2488192934Srmacklem eap->ex_numsecflavors = 1; 2489192934Srmacklem eap->ex_secflavors[0] = AUTH_SYS; 2490184588Sdfr } 24911558Srgrimes done = FALSE; 2492158857Srodrigc 2493192934Srmacklem if (v4root_phase == 0) { 2494192934Srmacklem build_iovec(&iov, &iovlen, "fstype", NULL, 0); 2495192934Srmacklem build_iovec(&iov, &iovlen, "fspath", NULL, 0); 2496192934Srmacklem build_iovec(&iov, &iovlen, "from", NULL, 0); 2497192934Srmacklem build_iovec(&iov, &iovlen, "update", NULL, 0); 2498192934Srmacklem build_iovec(&iov, &iovlen, "export", eap, 2499192934Srmacklem sizeof (struct export_args)); 2500192934Srmacklem build_iovec(&iov, &iovlen, "errmsg", errmsg, sizeof(errmsg)); 2501192934Srmacklem } 2502158857Srodrigc 25031558Srgrimes while (!done) { 25041558Srgrimes switch (grp->gr_type) { 25051558Srgrimes case GT_HOST: 250675641Siedowse if (ai->ai_addr->sa_family == AF_INET6 && have_v6 == 0) 250774462Salfred goto skip; 2508192934Srmacklem eap->ex_addr = ai->ai_addr; 2509192934Srmacklem eap->ex_addrlen = ai->ai_addrlen; 2510192934Srmacklem eap->ex_masklen = 0; 25111558Srgrimes break; 25121558Srgrimes case GT_NET: 251375801Siedowse if (grp->gr_ptr.gt_net.nt_net.ss_family == AF_INET6 && 251474462Salfred have_v6 == 0) 251574462Salfred goto skip; 2516192934Srmacklem eap->ex_addr = 251775801Siedowse (struct sockaddr *)&grp->gr_ptr.gt_net.nt_net; 2518192934Srmacklem eap->ex_addrlen = 2519158857Srodrigc ((struct sockaddr *)&grp->gr_ptr.gt_net.nt_net)->sa_len; 2520192934Srmacklem eap->ex_mask = 252175801Siedowse (struct sockaddr *)&grp->gr_ptr.gt_net.nt_mask; 2522192934Srmacklem eap->ex_masklen = ((struct sockaddr *)&grp->gr_ptr.gt_net.nt_mask)->sa_len; 25231558Srgrimes break; 252475641Siedowse case GT_DEFAULT: 2525192934Srmacklem eap->ex_addr = NULL; 2526192934Srmacklem eap->ex_addrlen = 0; 2527192934Srmacklem eap->ex_mask = NULL; 2528192934Srmacklem eap->ex_masklen = 0; 252975641Siedowse break; 25307401Swpaul case GT_IGNORE: 2531158857Srodrigc ret = 0; 2532158857Srodrigc goto error_exit; 25337401Swpaul break; 25341558Srgrimes default: 253537663Scharnier syslog(LOG_ERR, "bad grouptype"); 25361558Srgrimes if (cp) 25371558Srgrimes *cp = savedc; 2538158857Srodrigc ret = 1; 2539158857Srodrigc goto error_exit; 2540298089Spfg } 25411558Srgrimes 25421558Srgrimes /* 2543192934Srmacklem * For V4:, use the nfssvc() syscall, instead of mount(). 25441558Srgrimes */ 2545192934Srmacklem if (v4root_phase == 2) { 2546192934Srmacklem nfsea.fspec = v4root_dirpath; 2547282214Strasz if (nfssvc(NFSSVC_V4ROOTEXPORT, (caddr_t)&nfsea) < 0) { 2548192934Srmacklem syslog(LOG_ERR, "Exporting V4: failed"); 2549192934Srmacklem return (2); 2550158857Srodrigc } 2551192934Srmacklem } else { 2552192934Srmacklem /* 2553192934Srmacklem * XXX: 2554192934Srmacklem * Maybe I should just use the fsb->f_mntonname path 2555192934Srmacklem * instead of looping back up the dirp to the mount 2556192934Srmacklem * point?? 2557192934Srmacklem * Also, needs to know how to export all types of local 2558192934Srmacklem * exportable filesystems and not just "ufs". 2559192934Srmacklem */ 2560192934Srmacklem iov[1].iov_base = fsb->f_fstypename; /* "fstype" */ 2561192934Srmacklem iov[1].iov_len = strlen(fsb->f_fstypename) + 1; 2562192934Srmacklem iov[3].iov_base = fsb->f_mntonname; /* "fspath" */ 2563192934Srmacklem iov[3].iov_len = strlen(fsb->f_mntonname) + 1; 2564192934Srmacklem iov[5].iov_base = fsb->f_mntfromname; /* "from" */ 2565192934Srmacklem iov[5].iov_len = strlen(fsb->f_mntfromname) + 1; 2566270183Sbdrewery errmsg[0] = '\0'; 2567192934Srmacklem 2568192934Srmacklem while (nmount(iov, iovlen, fsb->f_flags) < 0) { 2569192934Srmacklem if (cp) 2570192934Srmacklem *cp-- = savedc; 2571192934Srmacklem else 2572192934Srmacklem cp = dirp + dirplen - 1; 2573192934Srmacklem if (opt_flags & OP_QUIET) { 2574192934Srmacklem ret = 1; 2575192934Srmacklem goto error_exit; 2576192934Srmacklem } 2577192934Srmacklem if (errno == EPERM) { 2578192934Srmacklem if (debug) 2579239744Sdelphij warnx("can't change attributes for %s: %s", 2580239744Sdelphij dirp, errmsg); 2581192934Srmacklem syslog(LOG_ERR, 2582239744Sdelphij "can't change attributes for %s: %s", 2583239744Sdelphij dirp, errmsg); 2584192934Srmacklem ret = 1; 2585192934Srmacklem goto error_exit; 2586192934Srmacklem } 2587192934Srmacklem if (opt_flags & OP_ALLDIRS) { 2588192934Srmacklem if (errno == EINVAL) 2589192934Srmacklem syslog(LOG_ERR, 2590100336Sjoerg "-alldirs requested but %s is not a filesystem mountpoint", 2591192934Srmacklem dirp); 2592192934Srmacklem else 2593192934Srmacklem syslog(LOG_ERR, 2594192934Srmacklem "could not remount %s: %m", 2595192934Srmacklem dirp); 2596192934Srmacklem ret = 1; 2597192934Srmacklem goto error_exit; 2598192934Srmacklem } 2599192934Srmacklem /* back up over the last component */ 2600192934Srmacklem while (*cp == '/' && cp > dirp) 2601192934Srmacklem cp--; 2602192934Srmacklem while (*(cp - 1) != '/' && cp > dirp) 2603192934Srmacklem cp--; 2604192934Srmacklem if (cp == dirp) { 2605192934Srmacklem if (debug) 2606192934Srmacklem warnx("mnt unsucc"); 2607192934Srmacklem syslog(LOG_ERR, "can't export %s %s", 2608192934Srmacklem dirp, errmsg); 2609192934Srmacklem ret = 1; 2610192934Srmacklem goto error_exit; 2611192934Srmacklem } 2612192934Srmacklem savedc = *cp; 2613192934Srmacklem *cp = '\0'; 2614192934Srmacklem /* 2615192934Srmacklem * Check that we're still on the same 2616192934Srmacklem * filesystem. 2617192934Srmacklem */ 2618192934Srmacklem if (statfs(dirp, &fsb1) != 0 || 2619192934Srmacklem bcmp(&fsb1.f_fsid, &fsb->f_fsid, 2620192934Srmacklem sizeof (fsb1.f_fsid)) != 0) { 2621192934Srmacklem *cp = savedc; 2622100336Sjoerg syslog(LOG_ERR, 2623192934Srmacklem "can't export %s %s", dirp, 2624192934Srmacklem errmsg); 2625192934Srmacklem ret = 1; 2626192934Srmacklem goto error_exit; 2627192934Srmacklem } 26281558Srgrimes } 26291558Srgrimes } 2630192934Srmacklem 2631192934Srmacklem /* 2632192934Srmacklem * For the experimental server: 2633192934Srmacklem * If this is the public directory, get the file handle 2634192934Srmacklem * and load it into the kernel via the nfssvc() syscall. 2635192934Srmacklem */ 2636282214Strasz if ((exflags & MNT_EXPUBLIC) != 0) { 2637192934Srmacklem fhandle_t fh; 2638192934Srmacklem char *public_name; 2639192934Srmacklem 2640192934Srmacklem if (eap->ex_indexfile != NULL) 2641192934Srmacklem public_name = eap->ex_indexfile; 2642192934Srmacklem else 2643192934Srmacklem public_name = dirp; 2644192934Srmacklem if (getfh(public_name, &fh) < 0) 2645192934Srmacklem syslog(LOG_ERR, 2646192934Srmacklem "Can't get public fh for %s", public_name); 2647192934Srmacklem else if (nfssvc(NFSSVC_PUBLICFH, (caddr_t)&fh) < 0) 2648192934Srmacklem syslog(LOG_ERR, 2649192934Srmacklem "Can't set public fh for %s", public_name); 2650192934Srmacklem else 2651192934Srmacklem has_publicfh = 1; 2652192934Srmacklem } 265374462Salfredskip: 265475641Siedowse if (ai != NULL) 265574462Salfred ai = ai->ai_next; 265675641Siedowse if (ai == NULL) 26571558Srgrimes done = TRUE; 26581558Srgrimes } 26591558Srgrimes if (cp) 26601558Srgrimes *cp = savedc; 2661158857Srodrigcerror_exit: 2662158857Srodrigc /* free strings allocated by strdup() in getmntopts.c */ 2663158857Srodrigc if (iov != NULL) { 2664158857Srodrigc free(iov[0].iov_base); /* fstype */ 2665158857Srodrigc free(iov[2].iov_base); /* fspath */ 2666158857Srodrigc free(iov[4].iov_base); /* from */ 2667158857Srodrigc free(iov[6].iov_base); /* update */ 2668158857Srodrigc free(iov[8].iov_base); /* export */ 2669158857Srodrigc free(iov[10].iov_base); /* errmsg */ 2670158857Srodrigc 2671158857Srodrigc /* free iov, allocated by realloc() */ 2672158857Srodrigc free(iov); 2673158857Srodrigc } 2674158857Srodrigc return (ret); 26751558Srgrimes} 26761558Srgrimes 26771558Srgrimes/* 26781558Srgrimes * Translate a net address. 267975801Siedowse * 268075801Siedowse * If `maskflg' is nonzero, then `cp' is a netmask, not a network address. 26811558Srgrimes */ 2682285128Straszstatic int 2683216587Scharnierget_net(char *cp, struct netmsk *net, int maskflg) 26841558Srgrimes{ 268575861Siedowse struct netent *np = NULL; 268674462Salfred char *name, *p, *prefp; 268775801Siedowse struct sockaddr_in sin; 268875861Siedowse struct sockaddr *sa = NULL; 268974462Salfred struct addrinfo hints, *ai = NULL; 269074462Salfred char netname[NI_MAXHOST]; 269174462Salfred long preflen; 26921558Srgrimes 269375635Siedowse p = prefp = NULL; 269474462Salfred if ((opt_flags & OP_MASKLEN) && !maskflg) { 269574462Salfred p = strchr(cp, '/'); 269674462Salfred *p = '\0'; 269774462Salfred prefp = p + 1; 269874462Salfred } 269974462Salfred 270075861Siedowse /* 270175861Siedowse * Check for a numeric address first. We wish to avoid 270275861Siedowse * possible DNS lookups in getnetbyname(). 270375861Siedowse */ 270475861Siedowse if (isxdigit(*cp) || *cp == ':') { 270574462Salfred memset(&hints, 0, sizeof hints); 270675801Siedowse /* Ensure the mask and the network have the same family. */ 270775801Siedowse if (maskflg && (opt_flags & OP_NET)) 270875801Siedowse hints.ai_family = net->nt_net.ss_family; 270975801Siedowse else if (!maskflg && (opt_flags & OP_HAVEMASK)) 271075801Siedowse hints.ai_family = net->nt_mask.ss_family; 271175801Siedowse else 271275801Siedowse hints.ai_family = AF_UNSPEC; 271374462Salfred hints.ai_flags = AI_NUMERICHOST; 271475861Siedowse if (getaddrinfo(cp, NULL, &hints, &ai) == 0) 271575861Siedowse sa = ai->ai_addr; 271675861Siedowse if (sa != NULL && ai->ai_family == AF_INET) { 271774462Salfred /* 271875801Siedowse * The address in `cp' is really a network address, so 271975801Siedowse * use inet_network() to re-interpret this correctly. 272075801Siedowse * e.g. "127.1" means 127.1.0.0, not 127.0.0.1. 272174462Salfred */ 272275801Siedowse bzero(&sin, sizeof sin); 272374462Salfred sin.sin_family = AF_INET; 272474462Salfred sin.sin_len = sizeof sin; 272575801Siedowse sin.sin_addr = inet_makeaddr(inet_network(cp), 0); 272674462Salfred if (debug) 272775801Siedowse fprintf(stderr, "get_net: v4 addr %s\n", 272875801Siedowse inet_ntoa(sin.sin_addr)); 272974462Salfred sa = (struct sockaddr *)&sin; 273075861Siedowse } 273175861Siedowse } 273275861Siedowse if (sa == NULL && (np = getnetbyname(cp)) != NULL) { 273375861Siedowse bzero(&sin, sizeof sin); 273475861Siedowse sin.sin_family = AF_INET; 273575861Siedowse sin.sin_len = sizeof sin; 273675861Siedowse sin.sin_addr = inet_makeaddr(np->n_net, 0); 273775861Siedowse sa = (struct sockaddr *)&sin; 273875861Siedowse } 273975861Siedowse if (sa == NULL) 274074462Salfred goto fail; 274125318Spst 274275801Siedowse if (maskflg) { 274375801Siedowse /* The specified sockaddr is a mask. */ 274475801Siedowse if (checkmask(sa) != 0) 274575801Siedowse goto fail; 274675801Siedowse bcopy(sa, &net->nt_mask, sa->sa_len); 274775801Siedowse opt_flags |= OP_HAVEMASK; 274875801Siedowse } else { 274975801Siedowse /* The specified sockaddr is a network address. */ 275075801Siedowse bcopy(sa, &net->nt_net, sa->sa_len); 275174462Salfred 275275801Siedowse /* Get a network name for the export list. */ 275375801Siedowse if (np) { 275475801Siedowse name = np->n_name; 275575801Siedowse } else if (getnameinfo(sa, sa->sa_len, netname, sizeof netname, 2756146187Sume NULL, 0, NI_NUMERICHOST) == 0) { 275775801Siedowse name = netname; 275875801Siedowse } else { 275975801Siedowse goto fail; 276075801Siedowse } 276175801Siedowse if ((net->nt_name = strdup(name)) == NULL) 276275801Siedowse out_of_mem(); 276375801Siedowse 276475801Siedowse /* 276575801Siedowse * Extract a mask from either a "/<masklen>" suffix, or 276675801Siedowse * from the class of an IPv4 address. 276775801Siedowse */ 276874462Salfred if (opt_flags & OP_MASKLEN) { 276974462Salfred preflen = strtol(prefp, NULL, 10); 277075801Siedowse if (preflen < 0L || preflen == LONG_MAX) 277174462Salfred goto fail; 277275801Siedowse bcopy(sa, &net->nt_mask, sa->sa_len); 277375801Siedowse if (makemask(&net->nt_mask, (int)preflen) != 0) 277475801Siedowse goto fail; 277575801Siedowse opt_flags |= OP_HAVEMASK; 277674462Salfred *p = '/'; 277775801Siedowse } else if (sa->sa_family == AF_INET && 277875801Siedowse (opt_flags & OP_MASK) == 0) { 277975801Siedowse in_addr_t addr; 278074462Salfred 278175801Siedowse addr = ((struct sockaddr_in *)sa)->sin_addr.s_addr; 278275801Siedowse if (IN_CLASSA(addr)) 278375801Siedowse preflen = 8; 278475801Siedowse else if (IN_CLASSB(addr)) 278575801Siedowse preflen = 16; 278675801Siedowse else if (IN_CLASSC(addr)) 278775801Siedowse preflen = 24; 278875801Siedowse else if (IN_CLASSD(addr)) 278975801Siedowse preflen = 28; 279075801Siedowse else 279175801Siedowse preflen = 32; /* XXX */ 279275801Siedowse 279375801Siedowse bcopy(sa, &net->nt_mask, sa->sa_len); 279475801Siedowse makemask(&net->nt_mask, (int)preflen); 279575801Siedowse opt_flags |= OP_HAVEMASK; 279674462Salfred } 279774462Salfred } 279874462Salfred 279974462Salfred if (ai) 280074462Salfred freeaddrinfo(ai); 280174462Salfred return 0; 280274462Salfred 280374462Salfredfail: 280474462Salfred if (ai) 280574462Salfred freeaddrinfo(ai); 280674462Salfred return 1; 28071558Srgrimes} 28081558Srgrimes 28091558Srgrimes/* 28101558Srgrimes * Parse out the next white space separated field 28111558Srgrimes */ 2812285128Straszstatic void 2813216587Scharniernextfield(char **cp, char **endcp) 28141558Srgrimes{ 28151558Srgrimes char *p; 28161558Srgrimes 28171558Srgrimes p = *cp; 28181558Srgrimes while (*p == ' ' || *p == '\t') 28191558Srgrimes p++; 28201558Srgrimes if (*p == '\n' || *p == '\0') 28211558Srgrimes *cp = *endcp = p; 28221558Srgrimes else { 28231558Srgrimes *cp = p++; 28241558Srgrimes while (*p != ' ' && *p != '\t' && *p != '\n' && *p != '\0') 28251558Srgrimes p++; 28261558Srgrimes *endcp = p; 28271558Srgrimes } 28281558Srgrimes} 28291558Srgrimes 28301558Srgrimes/* 28311558Srgrimes * Get an exports file line. Skip over blank lines and handle line 28321558Srgrimes * continuations. 28331558Srgrimes */ 2834285128Straszstatic int 2835216587Scharnierget_line(void) 28361558Srgrimes{ 28371558Srgrimes char *p, *cp; 283896622Siedowse size_t len; 28391558Srgrimes int totlen, cont_line; 28401558Srgrimes 28411558Srgrimes /* 28421558Srgrimes * Loop around ignoring blank lines and getting all continuation lines. 28431558Srgrimes */ 28441558Srgrimes p = line; 28451558Srgrimes totlen = 0; 28461558Srgrimes do { 284796622Siedowse if ((p = fgetln(exp_file, &len)) == NULL) 28481558Srgrimes return (0); 28491558Srgrimes cp = p + len - 1; 28501558Srgrimes cont_line = 0; 28511558Srgrimes while (cp >= p && 28521558Srgrimes (*cp == ' ' || *cp == '\t' || *cp == '\n' || *cp == '\\')) { 28531558Srgrimes if (*cp == '\\') 28541558Srgrimes cont_line = 1; 28551558Srgrimes cp--; 28561558Srgrimes len--; 28571558Srgrimes } 285879117Sdd if (cont_line) { 285979117Sdd *++cp = ' '; 286079117Sdd len++; 286179117Sdd } 286296622Siedowse if (linesize < len + totlen + 1) { 286396622Siedowse linesize = len + totlen + 1; 286496622Siedowse line = realloc(line, linesize); 286596622Siedowse if (line == NULL) 286696622Siedowse out_of_mem(); 28671558Srgrimes } 286896622Siedowse memcpy(line + totlen, p, len); 286996622Siedowse totlen += len; 287096622Siedowse line[totlen] = '\0'; 28711558Srgrimes } while (totlen == 0 || cont_line); 28721558Srgrimes return (1); 28731558Srgrimes} 28741558Srgrimes 28751558Srgrimes/* 28761558Srgrimes * Parse a description of a credential. 28771558Srgrimes */ 2878285128Straszstatic void 2879216587Scharnierparsecred(char *namelist, struct xucred *cr) 28801558Srgrimes{ 28811558Srgrimes char *name; 28821558Srgrimes int cnt; 28831558Srgrimes char *names; 28841558Srgrimes struct passwd *pw; 28851558Srgrimes struct group *gr; 2886194498Sbrooks gid_t groups[XU_NGROUPS + 1]; 2887136051Sstefanf int ngroups; 28881558Srgrimes 288991354Sdd cr->cr_version = XUCRED_VERSION; 28901558Srgrimes /* 289137663Scharnier * Set up the unprivileged user. 28921558Srgrimes */ 28931558Srgrimes cr->cr_uid = -2; 28941558Srgrimes cr->cr_groups[0] = -2; 28951558Srgrimes cr->cr_ngroups = 1; 28961558Srgrimes /* 28971558Srgrimes * Get the user's password table entry. 28981558Srgrimes */ 2899293305Sjpaetzel names = strsep_quote(&namelist, " \t\n"); 29001558Srgrimes name = strsep(&names, ":"); 2901293305Sjpaetzel /* Bug? name could be NULL here */ 29021558Srgrimes if (isdigit(*name) || *name == '-') 29031558Srgrimes pw = getpwuid(atoi(name)); 29041558Srgrimes else 29051558Srgrimes pw = getpwnam(name); 29061558Srgrimes /* 29071558Srgrimes * Credentials specified as those of a user. 29081558Srgrimes */ 29091558Srgrimes if (names == NULL) { 29101558Srgrimes if (pw == NULL) { 291137663Scharnier syslog(LOG_ERR, "unknown user: %s", name); 29121558Srgrimes return; 29131558Srgrimes } 29141558Srgrimes cr->cr_uid = pw->pw_uid; 2915194498Sbrooks ngroups = XU_NGROUPS + 1; 2916333197Savg if (getgrouplist(pw->pw_name, pw->pw_gid, groups, &ngroups)) { 291737663Scharnier syslog(LOG_ERR, "too many groups"); 2918333197Savg ngroups = XU_NGROUPS + 1; 2919333197Savg } 2920333197Savg 29211558Srgrimes /* 2922136051Sstefanf * Compress out duplicate. 29231558Srgrimes */ 29241558Srgrimes cr->cr_ngroups = ngroups - 1; 29251558Srgrimes cr->cr_groups[0] = groups[0]; 29261558Srgrimes for (cnt = 2; cnt < ngroups; cnt++) 29271558Srgrimes cr->cr_groups[cnt - 1] = groups[cnt]; 29281558Srgrimes return; 29291558Srgrimes } 29301558Srgrimes /* 29311558Srgrimes * Explicit credential specified as a colon separated list: 29321558Srgrimes * uid:gid:gid:... 29331558Srgrimes */ 29341558Srgrimes if (pw != NULL) 29351558Srgrimes cr->cr_uid = pw->pw_uid; 29361558Srgrimes else if (isdigit(*name) || *name == '-') 29371558Srgrimes cr->cr_uid = atoi(name); 29381558Srgrimes else { 293937663Scharnier syslog(LOG_ERR, "unknown user: %s", name); 29401558Srgrimes return; 29411558Srgrimes } 29421558Srgrimes cr->cr_ngroups = 0; 2943194498Sbrooks while (names != NULL && *names != '\0' && cr->cr_ngroups < XU_NGROUPS) { 29441558Srgrimes name = strsep(&names, ":"); 29451558Srgrimes if (isdigit(*name) || *name == '-') { 29461558Srgrimes cr->cr_groups[cr->cr_ngroups++] = atoi(name); 29471558Srgrimes } else { 29481558Srgrimes if ((gr = getgrnam(name)) == NULL) { 294937663Scharnier syslog(LOG_ERR, "unknown group: %s", name); 29501558Srgrimes continue; 29511558Srgrimes } 29521558Srgrimes cr->cr_groups[cr->cr_ngroups++] = gr->gr_gid; 29531558Srgrimes } 29541558Srgrimes } 2955194498Sbrooks if (names != NULL && *names != '\0' && cr->cr_ngroups == XU_NGROUPS) 295637663Scharnier syslog(LOG_ERR, "too many groups"); 29571558Srgrimes} 29581558Srgrimes 2959194880Sdfr#define STRSIZ (MNTNAMLEN+MNTPATHLEN+50) 29601558Srgrimes/* 29611558Srgrimes * Routines that maintain the remote mounttab 29621558Srgrimes */ 2963285128Straszstatic void 2964216587Scharnierget_mountlist(void) 29651558Srgrimes{ 2966324955Smanu struct mountlist *mlp; 296723681Speter char *host, *dirp, *cp; 29681558Srgrimes char str[STRSIZ]; 29691558Srgrimes FILE *mlfile; 29701558Srgrimes 29711558Srgrimes if ((mlfile = fopen(_PATH_RMOUNTLIST, "r")) == NULL) { 297253117Sbillf if (errno == ENOENT) 297353117Sbillf return; 297453117Sbillf else { 297553117Sbillf syslog(LOG_ERR, "can't open %s", _PATH_RMOUNTLIST); 297653117Sbillf return; 297753117Sbillf } 29781558Srgrimes } 29791558Srgrimes while (fgets(str, STRSIZ, mlfile) != NULL) { 298023681Speter cp = str; 298123681Speter host = strsep(&cp, " \t\n"); 298223681Speter dirp = strsep(&cp, " \t\n"); 298323681Speter if (host == NULL || dirp == NULL) 29841558Srgrimes continue; 29851558Srgrimes mlp = (struct mountlist *)malloc(sizeof (*mlp)); 298637663Scharnier if (mlp == (struct mountlist *)NULL) 298737663Scharnier out_of_mem(); 2988194880Sdfr strncpy(mlp->ml_host, host, MNTNAMLEN); 2989194880Sdfr mlp->ml_host[MNTNAMLEN] = '\0'; 2990194880Sdfr strncpy(mlp->ml_dirp, dirp, MNTPATHLEN); 2991194880Sdfr mlp->ml_dirp[MNTPATHLEN] = '\0'; 2992324955Smanu 2993324955Smanu SLIST_INSERT_HEAD(&mlhead, mlp, next); 29941558Srgrimes } 29951558Srgrimes fclose(mlfile); 29961558Srgrimes} 29971558Srgrimes 2998285128Straszstatic void 299975635Siedowsedel_mlist(char *hostp, char *dirp) 30001558Srgrimes{ 3001324955Smanu struct mountlist *mlp, *mlp2; 30021558Srgrimes FILE *mlfile; 30031558Srgrimes int fnd = 0; 30041558Srgrimes 3005324955Smanu SLIST_FOREACH_SAFE(mlp, &mlhead, next, mlp2) { 30061558Srgrimes if (!strcmp(mlp->ml_host, hostp) && 30071558Srgrimes (!dirp || !strcmp(mlp->ml_dirp, dirp))) { 30081558Srgrimes fnd = 1; 3009324955Smanu SLIST_REMOVE(&mlhead, mlp, mountlist, next); 3010324955Smanu free((caddr_t)mlp); 30111558Srgrimes } 30121558Srgrimes } 30131558Srgrimes if (fnd) { 30141558Srgrimes if ((mlfile = fopen(_PATH_RMOUNTLIST, "w")) == NULL) { 301537663Scharnier syslog(LOG_ERR,"can't update %s", _PATH_RMOUNTLIST); 30161558Srgrimes return; 30171558Srgrimes } 3018324955Smanu SLIST_FOREACH(mlp, &mlhead, next) { 30191558Srgrimes fprintf(mlfile, "%s %s\n", mlp->ml_host, mlp->ml_dirp); 30201558Srgrimes } 30211558Srgrimes fclose(mlfile); 30221558Srgrimes } 30231558Srgrimes} 30241558Srgrimes 3025285128Straszstatic void 3026216587Scharnieradd_mlist(char *hostp, char *dirp) 30271558Srgrimes{ 3028324955Smanu struct mountlist *mlp; 30291558Srgrimes FILE *mlfile; 30301558Srgrimes 3031324955Smanu SLIST_FOREACH(mlp, &mlhead, next) { 30321558Srgrimes if (!strcmp(mlp->ml_host, hostp) && !strcmp(mlp->ml_dirp, dirp)) 30331558Srgrimes return; 30341558Srgrimes } 3035324955Smanu 30361558Srgrimes mlp = (struct mountlist *)malloc(sizeof (*mlp)); 303737663Scharnier if (mlp == (struct mountlist *)NULL) 303837663Scharnier out_of_mem(); 3039194880Sdfr strncpy(mlp->ml_host, hostp, MNTNAMLEN); 3040194880Sdfr mlp->ml_host[MNTNAMLEN] = '\0'; 3041194880Sdfr strncpy(mlp->ml_dirp, dirp, MNTPATHLEN); 3042194880Sdfr mlp->ml_dirp[MNTPATHLEN] = '\0'; 3043324955Smanu SLIST_INSERT_HEAD(&mlhead, mlp, next); 30441558Srgrimes if ((mlfile = fopen(_PATH_RMOUNTLIST, "a")) == NULL) { 304537663Scharnier syslog(LOG_ERR, "can't update %s", _PATH_RMOUNTLIST); 30461558Srgrimes return; 30471558Srgrimes } 30481558Srgrimes fprintf(mlfile, "%s %s\n", mlp->ml_host, mlp->ml_dirp); 30491558Srgrimes fclose(mlfile); 30501558Srgrimes} 30511558Srgrimes 30521558Srgrimes/* 30531558Srgrimes * Free up a group list. 30541558Srgrimes */ 3055285128Straszstatic void 3056216587Scharnierfree_grp(struct grouplist *grp) 30571558Srgrimes{ 30581558Srgrimes if (grp->gr_type == GT_HOST) { 305974462Salfred if (grp->gr_ptr.gt_addrinfo != NULL) 306074462Salfred freeaddrinfo(grp->gr_ptr.gt_addrinfo); 30611558Srgrimes } else if (grp->gr_type == GT_NET) { 30621558Srgrimes if (grp->gr_ptr.gt_net.nt_name) 30631558Srgrimes free(grp->gr_ptr.gt_net.nt_name); 30641558Srgrimes } 30651558Srgrimes free((caddr_t)grp); 30661558Srgrimes} 30671558Srgrimes 30681558Srgrimes#ifdef DEBUG 3069285128Straszstatic void 30701558SrgrimesSYSLOG(int pri, const char *fmt, ...) 30711558Srgrimes{ 30721558Srgrimes va_list ap; 30731558Srgrimes 30741558Srgrimes va_start(ap, fmt); 30751558Srgrimes vfprintf(stderr, fmt, ap); 30761558Srgrimes va_end(ap); 30771558Srgrimes} 30781558Srgrimes#endif /* DEBUG */ 30791558Srgrimes 30801558Srgrimes/* 30811558Srgrimes * Check options for consistency. 30821558Srgrimes */ 3083285128Straszstatic int 3084216587Scharniercheck_options(struct dirlist *dp) 30851558Srgrimes{ 30861558Srgrimes 3087192934Srmacklem if (v4root_phase == 0 && dp == NULL) 30881558Srgrimes return (1); 308983653Speter if ((opt_flags & (OP_MAPROOT | OP_MAPALL)) == (OP_MAPROOT | OP_MAPALL)) { 309083653Speter syslog(LOG_ERR, "-mapall and -maproot mutually exclusive"); 30911558Srgrimes return (1); 30921558Srgrimes } 30931558Srgrimes if ((opt_flags & OP_MASK) && (opt_flags & OP_NET) == 0) { 309475801Siedowse syslog(LOG_ERR, "-mask requires -network"); 309575801Siedowse return (1); 30961558Srgrimes } 309775801Siedowse if ((opt_flags & OP_NET) && (opt_flags & OP_HAVEMASK) == 0) { 309875801Siedowse syslog(LOG_ERR, "-network requires mask specification"); 309975801Siedowse return (1); 310075801Siedowse } 310175801Siedowse if ((opt_flags & OP_MASK) && (opt_flags & OP_MASKLEN)) { 310275801Siedowse syslog(LOG_ERR, "-mask and /masklen are mutually exclusive"); 310375801Siedowse return (1); 310475801Siedowse } 3105192934Srmacklem if (v4root_phase > 0 && 3106192934Srmacklem (opt_flags & 3107192934Srmacklem ~(OP_SEC | OP_MASK | OP_NET | OP_HAVEMASK | OP_MASKLEN)) != 0) { 3108192934Srmacklem syslog(LOG_ERR,"only -sec,-net,-mask options allowed on V4:"); 3109192934Srmacklem return (1); 3110192934Srmacklem } 3111207689Srmacklem if ((opt_flags & OP_ALLDIRS) && dp->dp_left) { 3112207689Srmacklem syslog(LOG_ERR, "-alldirs has multiple directories"); 3113207689Srmacklem return (1); 3114207689Srmacklem } 31151558Srgrimes return (0); 31161558Srgrimes} 31171558Srgrimes 31181558Srgrimes/* 31191558Srgrimes * Check an absolute directory path for any symbolic links. Return true 31201558Srgrimes */ 3121285128Straszstatic int 3122216587Scharniercheck_dirpath(char *dirp) 31231558Srgrimes{ 31241558Srgrimes char *cp; 31251558Srgrimes int ret = 1; 31261558Srgrimes struct stat sb; 31271558Srgrimes 31281558Srgrimes cp = dirp + 1; 31291558Srgrimes while (*cp && ret) { 31301558Srgrimes if (*cp == '/') { 31311558Srgrimes *cp = '\0'; 31329336Sdfr if (lstat(dirp, &sb) < 0 || !S_ISDIR(sb.st_mode)) 31331558Srgrimes ret = 0; 31341558Srgrimes *cp = '/'; 31351558Srgrimes } 31361558Srgrimes cp++; 31371558Srgrimes } 31389336Sdfr if (lstat(dirp, &sb) < 0 || !S_ISDIR(sb.st_mode)) 31391558Srgrimes ret = 0; 31401558Srgrimes return (ret); 31411558Srgrimes} 31429336Sdfr 314375801Siedowse/* 314475801Siedowse * Make a netmask according to the specified prefix length. The ss_family 314575801Siedowse * and other non-address fields must be initialised before calling this. 314675801Siedowse */ 3147285128Straszstatic int 314875801Siedowsemakemask(struct sockaddr_storage *ssp, int bitlen) 314974462Salfred{ 315075801Siedowse u_char *p; 315175801Siedowse int bits, i, len; 315274462Salfred 315375801Siedowse if ((p = sa_rawaddr((struct sockaddr *)ssp, &len)) == NULL) 315475801Siedowse return (-1); 3155103949Smike if (bitlen > len * CHAR_BIT) 315675801Siedowse return (-1); 315774462Salfred 315875801Siedowse for (i = 0; i < len; i++) { 3159298912Saraujo bits = MIN(CHAR_BIT, bitlen); 3160219125Sru *p++ = (u_char)~0 << (CHAR_BIT - bits); 316175801Siedowse bitlen -= bits; 316274462Salfred } 316375801Siedowse return 0; 316474462Salfred} 316574462Salfred 316675801Siedowse/* 316775801Siedowse * Check that the sockaddr is a valid netmask. Returns 0 if the mask 316875801Siedowse * is acceptable (i.e. of the form 1...10....0). 316975801Siedowse */ 3170285128Straszstatic int 317175801Siedowsecheckmask(struct sockaddr *sa) 317274462Salfred{ 317375801Siedowse u_char *mask; 317475801Siedowse int i, len; 317574462Salfred 317675801Siedowse if ((mask = sa_rawaddr(sa, &len)) == NULL) 317775801Siedowse return (-1); 317875801Siedowse 317975801Siedowse for (i = 0; i < len; i++) 318075801Siedowse if (mask[i] != 0xff) 318175801Siedowse break; 318275801Siedowse if (i < len) { 318375801Siedowse if (~mask[i] & (u_char)(~mask[i] + 1)) 318475801Siedowse return (-1); 318575801Siedowse i++; 318674462Salfred } 318775801Siedowse for (; i < len; i++) 318875801Siedowse if (mask[i] != 0) 318975801Siedowse return (-1); 319075801Siedowse return (0); 319174462Salfred} 319274462Salfred 319375801Siedowse/* 319475801Siedowse * Compare two sockaddrs according to a specified mask. Return zero if 319575801Siedowse * `sa1' matches `sa2' when filtered by the netmask in `samask'. 3196228990Suqs * If samask is NULL, perform a full comparison. 319775801Siedowse */ 3198285128Straszstatic int 319975801Siedowsesacmp(struct sockaddr *sa1, struct sockaddr *sa2, struct sockaddr *samask) 320074462Salfred{ 320175801Siedowse unsigned char *p1, *p2, *mask; 320275801Siedowse int len, i; 320374462Salfred 320475801Siedowse if (sa1->sa_family != sa2->sa_family || 320575801Siedowse (p1 = sa_rawaddr(sa1, &len)) == NULL || 320675801Siedowse (p2 = sa_rawaddr(sa2, NULL)) == NULL) 320775801Siedowse return (1); 320875801Siedowse 320975801Siedowse switch (sa1->sa_family) { 321074462Salfred case AF_INET6: 321175801Siedowse if (((struct sockaddr_in6 *)sa1)->sin6_scope_id != 321275801Siedowse ((struct sockaddr_in6 *)sa2)->sin6_scope_id) 321375801Siedowse return (1); 321474462Salfred break; 321574462Salfred } 321674462Salfred 321775801Siedowse /* Simple binary comparison if no mask specified. */ 321875801Siedowse if (samask == NULL) 321975801Siedowse return (memcmp(p1, p2, len)); 322074462Salfred 322175801Siedowse /* Set up the mask, and do a mask-based comparison. */ 322275801Siedowse if (sa1->sa_family != samask->sa_family || 322375801Siedowse (mask = sa_rawaddr(samask, NULL)) == NULL) 322475801Siedowse return (1); 322574462Salfred 322675801Siedowse for (i = 0; i < len; i++) 322775801Siedowse if ((p1[i] & mask[i]) != (p2[i] & mask[i])) 322875801Siedowse return (1); 322975801Siedowse return (0); 323074462Salfred} 323174462Salfred 323275801Siedowse/* 323375801Siedowse * Return a pointer to the part of the sockaddr that contains the 323475801Siedowse * raw address, and set *nbytes to its length in bytes. Returns 323575801Siedowse * NULL if the address family is unknown. 323675801Siedowse */ 3237285128Straszstatic void * 323875801Siedowsesa_rawaddr(struct sockaddr *sa, int *nbytes) { 323975801Siedowse void *p; 324074462Salfred int len; 324174462Salfred 324275801Siedowse switch (sa->sa_family) { 324374462Salfred case AF_INET: 324475801Siedowse len = sizeof(((struct sockaddr_in *)sa)->sin_addr); 324575801Siedowse p = &((struct sockaddr_in *)sa)->sin_addr; 324674462Salfred break; 324774462Salfred case AF_INET6: 324875801Siedowse len = sizeof(((struct sockaddr_in6 *)sa)->sin6_addr); 324975801Siedowse p = &((struct sockaddr_in6 *)sa)->sin6_addr; 325074462Salfred break; 325174462Salfred default: 325275801Siedowse p = NULL; 325375801Siedowse len = 0; 325474462Salfred } 325574462Salfred 325675801Siedowse if (nbytes != NULL) 325775801Siedowse *nbytes = len; 325875801Siedowse return (p); 325974462Salfred} 326074462Salfred 3261285128Straszstatic void 3262216587Scharnierhuphandler(int sig __unused) 326375754Siedowse{ 3264285128Strasz 326575754Siedowse got_sighup = 1; 326675754Siedowse} 326775754Siedowse 3268285128Straszstatic void 3269285128Straszterminate(int sig __unused) 327074462Salfred{ 3271149433Spjd pidfile_remove(pfh); 3272194880Sdfr rpcb_unset(MOUNTPROG, MOUNTVERS, NULL); 3273194880Sdfr rpcb_unset(MOUNTPROG, MOUNTVERS3, NULL); 327474462Salfred exit (0); 327574462Salfred} 3276