mountd.c revision 329392
11558Srgrimes/* 21558Srgrimes * Copyright (c) 1989, 1993 31558Srgrimes * The Regents of the University of California. All rights reserved. 41558Srgrimes * 51558Srgrimes * This code is derived from software contributed to Berkeley by 61558Srgrimes * Herb Hasler and Rick Macklem at The University of Guelph. 71558Srgrimes * 81558Srgrimes * Redistribution and use in source and binary forms, with or without 91558Srgrimes * modification, are permitted provided that the following conditions 101558Srgrimes * are met: 111558Srgrimes * 1. Redistributions of source code must retain the above copyright 121558Srgrimes * notice, this list of conditions and the following disclaimer. 131558Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 141558Srgrimes * notice, this list of conditions and the following disclaimer in the 151558Srgrimes * documentation and/or other materials provided with the distribution. 161558Srgrimes * 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 329392 2018-02-16 18:49:50Z brd $"); 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 || 10549336Sdfr (!S_ISDIR(stb.st_mode) && 105574462Salfred (dir_only || !S_ISREG(stb.st_mode))) || 10561558Srgrimes statfs(dirpath, &fsb) < 0) { 10571558Srgrimes chdir("/"); /* Just in case realpath doesn't */ 105831656Sguido syslog(LOG_NOTICE, 105937663Scharnier "mount request from %s for non existent path %s", 106074462Salfred numerichost, dirpath); 10611558Srgrimes if (debug) 106237663Scharnier warnx("stat failed on %s", dirpath); 106328911Sguido bad = ENOENT; /* We will send error reply later */ 10641558Srgrimes } 10651558Srgrimes 10661558Srgrimes /* Check in the exports list */ 10679336Sdfr sigprocmask(SIG_BLOCK, &sighup_mask, NULL); 10681558Srgrimes ep = ex_search(&fsb.f_fsid); 10699336Sdfr hostset = defset = 0; 1070240902Srmacklem if (ep && (chk_host(ep->ex_defdir, saddr, &defset, &hostset, 1071240902Srmacklem &numsecflavors, &secflavorsp) || 10721558Srgrimes ((dp = dirp_search(ep->ex_dirl, dirpath)) && 1073240902Srmacklem chk_host(dp, saddr, &defset, &hostset, &numsecflavors, 1074240902Srmacklem &secflavorsp)) || 107574462Salfred (defset && scan_tree(ep->ex_defdir, saddr) == 0 && 107674462Salfred scan_tree(ep->ex_dirl, saddr) == 0))) { 107728911Sguido if (bad) { 1078121556Speter if (!svc_sendreply(transp, (xdrproc_t)xdr_long, 107928911Sguido (caddr_t)&bad)) 108037663Scharnier syslog(LOG_ERR, "can't send reply"); 108128911Sguido sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 108228911Sguido return; 108328911Sguido } 1084240902Srmacklem if (hostset & DP_HOSTSET) { 10859336Sdfr fhr.fhr_flag = hostset; 1086240902Srmacklem fhr.fhr_numsecflavors = numsecflavors; 1087240902Srmacklem fhr.fhr_secflavors = secflavorsp; 1088240902Srmacklem } else { 10899336Sdfr fhr.fhr_flag = defset; 1090240902Srmacklem fhr.fhr_numsecflavors = ep->ex_defnumsecflavors; 1091240902Srmacklem fhr.fhr_secflavors = ep->ex_defsecflavors; 1092240902Srmacklem } 10939336Sdfr fhr.fhr_vers = rqstp->rq_vers; 10941558Srgrimes /* Get the file handle */ 109523681Speter memset(&fhr.fhr_fh, 0, sizeof(nfsfh_t)); 10969336Sdfr if (getfh(dirpath, (fhandle_t *)&fhr.fhr_fh) < 0) { 10971558Srgrimes bad = errno; 109837663Scharnier syslog(LOG_ERR, "can't get fh for %s", dirpath); 1099121556Speter if (!svc_sendreply(transp, (xdrproc_t)xdr_long, 11001558Srgrimes (caddr_t)&bad)) 110137663Scharnier syslog(LOG_ERR, "can't send reply"); 11029336Sdfr sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 11031558Srgrimes return; 11041558Srgrimes } 1105121556Speter if (!svc_sendreply(transp, (xdrproc_t)xdr_fhs, 1106121556Speter (caddr_t)&fhr)) 110737663Scharnier syslog(LOG_ERR, "can't send reply"); 110874462Salfred if (!lookup_failed) 110974462Salfred add_mlist(host, dirpath); 11101558Srgrimes else 111174462Salfred add_mlist(numerichost, dirpath); 11121558Srgrimes if (debug) 111337663Scharnier warnx("mount successful"); 1114121767Speter if (dolog) 111531656Sguido syslog(LOG_NOTICE, 111631656Sguido "mount request succeeded from %s for %s", 111774462Salfred numerichost, dirpath); 111831656Sguido } else { 11191558Srgrimes bad = EACCES; 112031656Sguido syslog(LOG_NOTICE, 112131656Sguido "mount request denied from %s for %s", 112274462Salfred numerichost, dirpath); 112331656Sguido } 112428911Sguido 1125121556Speter if (bad && !svc_sendreply(transp, (xdrproc_t)xdr_long, 1126121556Speter (caddr_t)&bad)) 112737663Scharnier syslog(LOG_ERR, "can't send reply"); 11289336Sdfr sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 11291558Srgrimes return; 1130194880Sdfr case MOUNTPROC_DUMP: 1131121556Speter if (!svc_sendreply(transp, (xdrproc_t)xdr_mlist, (caddr_t)NULL)) 113237663Scharnier syslog(LOG_ERR, "can't send reply"); 1133121767Speter else if (dolog) 113431656Sguido syslog(LOG_NOTICE, 113531656Sguido "dump request succeeded from %s", 113674462Salfred numerichost); 11371558Srgrimes return; 1138194880Sdfr case MOUNTPROC_UMNT: 11399336Sdfr if (sport >= IPPORT_RESERVED && resvport_only) { 114031656Sguido syslog(LOG_NOTICE, 114131656Sguido "umount request from %s from unprivileged port", 114274462Salfred numerichost); 11431558Srgrimes svcerr_weakauth(transp); 11441558Srgrimes return; 11451558Srgrimes } 1146121556Speter if (!svc_getargs(transp, (xdrproc_t)xdr_dir, rpcpath)) { 114731656Sguido syslog(LOG_NOTICE, "undecodable umount request from %s", 114874462Salfred numerichost); 11491558Srgrimes svcerr_decode(transp); 11501558Srgrimes return; 11511558Srgrimes } 115251968Salfred if (realpath(rpcpath, dirpath) == NULL) { 115351968Salfred syslog(LOG_NOTICE, "umount request from %s " 115451968Salfred "for non existent path %s", 115574462Salfred numerichost, dirpath); 115651968Salfred } 1157121556Speter if (!svc_sendreply(transp, (xdrproc_t)xdr_void, (caddr_t)NULL)) 115837663Scharnier syslog(LOG_ERR, "can't send reply"); 115974462Salfred if (!lookup_failed) 116075635Siedowse del_mlist(host, dirpath); 116175635Siedowse del_mlist(numerichost, dirpath); 1162121767Speter if (dolog) 116331656Sguido syslog(LOG_NOTICE, 116431656Sguido "umount request succeeded from %s for %s", 116574462Salfred numerichost, dirpath); 11661558Srgrimes return; 1167194880Sdfr case MOUNTPROC_UMNTALL: 11689336Sdfr if (sport >= IPPORT_RESERVED && resvport_only) { 116931656Sguido syslog(LOG_NOTICE, 117031656Sguido "umountall request from %s from unprivileged port", 117174462Salfred numerichost); 11721558Srgrimes svcerr_weakauth(transp); 11731558Srgrimes return; 11741558Srgrimes } 1175121556Speter if (!svc_sendreply(transp, (xdrproc_t)xdr_void, (caddr_t)NULL)) 117637663Scharnier syslog(LOG_ERR, "can't send reply"); 117774462Salfred if (!lookup_failed) 117875635Siedowse del_mlist(host, NULL); 117975635Siedowse del_mlist(numerichost, NULL); 1180121767Speter if (dolog) 118131656Sguido syslog(LOG_NOTICE, 118231656Sguido "umountall request succeeded from %s", 118374462Salfred numerichost); 11841558Srgrimes return; 1185194880Sdfr case MOUNTPROC_EXPORT: 1186121556Speter if (!svc_sendreply(transp, (xdrproc_t)xdr_explist, (caddr_t)NULL)) 1187121556Speter if (!svc_sendreply(transp, (xdrproc_t)xdr_explist_brief, 1188121556Speter (caddr_t)NULL)) 1189100117Salfred syslog(LOG_ERR, "can't send reply"); 1190121767Speter if (dolog) 119131656Sguido syslog(LOG_NOTICE, 119231656Sguido "export request succeeded from %s", 119374462Salfred numerichost); 11941558Srgrimes return; 11951558Srgrimes default: 11961558Srgrimes svcerr_noproc(transp); 11971558Srgrimes return; 11981558Srgrimes } 11991558Srgrimes} 12001558Srgrimes 12011558Srgrimes/* 12021558Srgrimes * Xdr conversion for a dirpath string 12031558Srgrimes */ 1204285128Straszstatic int 1205216587Scharnierxdr_dir(XDR *xdrsp, char *dirp) 12061558Srgrimes{ 1207194880Sdfr return (xdr_string(xdrsp, &dirp, MNTPATHLEN)); 12081558Srgrimes} 12091558Srgrimes 12101558Srgrimes/* 12119336Sdfr * Xdr routine to generate file handle reply 12121558Srgrimes */ 1213285128Straszstatic int 1214216587Scharnierxdr_fhs(XDR *xdrsp, caddr_t cp) 12151558Srgrimes{ 121692806Sobrien struct fhreturn *fhrp = (struct fhreturn *)cp; 12179336Sdfr u_long ok = 0, len, auth; 1218184588Sdfr int i; 12191558Srgrimes 12201558Srgrimes if (!xdr_long(xdrsp, &ok)) 12211558Srgrimes return (0); 12229336Sdfr switch (fhrp->fhr_vers) { 12239336Sdfr case 1: 12249336Sdfr return (xdr_opaque(xdrsp, (caddr_t)&fhrp->fhr_fh, NFSX_V2FH)); 12259336Sdfr case 3: 12269336Sdfr len = NFSX_V3FH; 12279336Sdfr if (!xdr_long(xdrsp, &len)) 12289336Sdfr return (0); 12299336Sdfr if (!xdr_opaque(xdrsp, (caddr_t)&fhrp->fhr_fh, len)) 12309336Sdfr return (0); 1231184588Sdfr if (fhrp->fhr_numsecflavors) { 1232184588Sdfr if (!xdr_int(xdrsp, &fhrp->fhr_numsecflavors)) 1233184588Sdfr return (0); 1234184588Sdfr for (i = 0; i < fhrp->fhr_numsecflavors; i++) 1235184588Sdfr if (!xdr_int(xdrsp, &fhrp->fhr_secflavors[i])) 1236184588Sdfr return (0); 1237184588Sdfr return (1); 1238184588Sdfr } else { 1239184588Sdfr auth = AUTH_SYS; 1240184588Sdfr len = 1; 1241184588Sdfr if (!xdr_long(xdrsp, &len)) 1242184588Sdfr return (0); 1243184588Sdfr return (xdr_long(xdrsp, &auth)); 1244184588Sdfr } 1245298089Spfg } 12469336Sdfr return (0); 12471558Srgrimes} 12481558Srgrimes 1249285128Straszstatic int 1250216587Scharnierxdr_mlist(XDR *xdrsp, caddr_t cp __unused) 12511558Srgrimes{ 12521558Srgrimes struct mountlist *mlp; 12531558Srgrimes int true = 1; 12541558Srgrimes int false = 0; 12551558Srgrimes char *strp; 12561558Srgrimes 1257324955Smanu SLIST_FOREACH(mlp, &mlhead, next) { 12581558Srgrimes if (!xdr_bool(xdrsp, &true)) 12591558Srgrimes return (0); 12601558Srgrimes strp = &mlp->ml_host[0]; 1261194880Sdfr if (!xdr_string(xdrsp, &strp, MNTNAMLEN)) 12621558Srgrimes return (0); 12631558Srgrimes strp = &mlp->ml_dirp[0]; 1264194880Sdfr if (!xdr_string(xdrsp, &strp, MNTPATHLEN)) 12651558Srgrimes return (0); 12661558Srgrimes } 12671558Srgrimes if (!xdr_bool(xdrsp, &false)) 12681558Srgrimes return (0); 12691558Srgrimes return (1); 12701558Srgrimes} 12711558Srgrimes 12721558Srgrimes/* 12731558Srgrimes * Xdr conversion for export list 12741558Srgrimes */ 1275285128Straszstatic int 1276216587Scharnierxdr_explist_common(XDR *xdrsp, caddr_t cp __unused, int brief) 12771558Srgrimes{ 12781558Srgrimes struct exportlist *ep; 12791558Srgrimes int false = 0; 12809336Sdfr int putdef; 12819336Sdfr sigset_t sighup_mask; 12821558Srgrimes 12839336Sdfr sigemptyset(&sighup_mask); 12849336Sdfr sigaddset(&sighup_mask, SIGHUP); 12859336Sdfr sigprocmask(SIG_BLOCK, &sighup_mask, NULL); 1286324955Smanu 1287324955Smanu SLIST_FOREACH(ep, &exphead, entries) { 12881558Srgrimes putdef = 0; 1289100117Salfred if (put_exlist(ep->ex_dirl, xdrsp, ep->ex_defdir, 1290100117Salfred &putdef, brief)) 12911558Srgrimes goto errout; 12921558Srgrimes if (ep->ex_defdir && putdef == 0 && 12931558Srgrimes put_exlist(ep->ex_defdir, xdrsp, (struct dirlist *)NULL, 1294100117Salfred &putdef, brief)) 12951558Srgrimes goto errout; 12961558Srgrimes } 12979336Sdfr sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 12981558Srgrimes if (!xdr_bool(xdrsp, &false)) 12991558Srgrimes return (0); 13001558Srgrimes return (1); 13011558Srgrimeserrout: 13029336Sdfr sigprocmask(SIG_UNBLOCK, &sighup_mask, NULL); 13031558Srgrimes return (0); 13041558Srgrimes} 13051558Srgrimes 13061558Srgrimes/* 13071558Srgrimes * Called from xdr_explist() to traverse the tree and export the 13081558Srgrimes * directory paths. 13091558Srgrimes */ 1310285128Straszstatic int 1311216587Scharnierput_exlist(struct dirlist *dp, XDR *xdrsp, struct dirlist *adp, int *putdefp, 1312216587Scharnier int brief) 13131558Srgrimes{ 13141558Srgrimes struct grouplist *grp; 13151558Srgrimes struct hostlist *hp; 13161558Srgrimes int true = 1; 13171558Srgrimes int false = 0; 13181558Srgrimes int gotalldir = 0; 13191558Srgrimes char *strp; 13201558Srgrimes 13211558Srgrimes if (dp) { 1322100117Salfred if (put_exlist(dp->dp_left, xdrsp, adp, putdefp, brief)) 13231558Srgrimes return (1); 13241558Srgrimes if (!xdr_bool(xdrsp, &true)) 13251558Srgrimes return (1); 13261558Srgrimes strp = dp->dp_dirp; 1327194880Sdfr if (!xdr_string(xdrsp, &strp, MNTPATHLEN)) 13281558Srgrimes return (1); 13291558Srgrimes if (adp && !strcmp(dp->dp_dirp, adp->dp_dirp)) { 13301558Srgrimes gotalldir = 1; 13311558Srgrimes *putdefp = 1; 13321558Srgrimes } 1333100117Salfred if (brief) { 1334100117Salfred if (!xdr_bool(xdrsp, &true)) 1335100117Salfred return (1); 1336100117Salfred strp = "(...)"; 1337194880Sdfr if (!xdr_string(xdrsp, &strp, MNTPATHLEN)) 1338100117Salfred return (1); 1339100117Salfred } else if ((dp->dp_flag & DP_DEFSET) == 0 && 13401558Srgrimes (gotalldir == 0 || (adp->dp_flag & DP_DEFSET) == 0)) { 13411558Srgrimes hp = dp->dp_hosts; 13421558Srgrimes while (hp) { 13431558Srgrimes grp = hp->ht_grp; 13441558Srgrimes if (grp->gr_type == GT_HOST) { 13451558Srgrimes if (!xdr_bool(xdrsp, &true)) 13461558Srgrimes return (1); 134774462Salfred strp = grp->gr_ptr.gt_addrinfo->ai_canonname; 13488871Srgrimes if (!xdr_string(xdrsp, &strp, 1349194880Sdfr MNTNAMLEN)) 13501558Srgrimes return (1); 13511558Srgrimes } else if (grp->gr_type == GT_NET) { 13521558Srgrimes if (!xdr_bool(xdrsp, &true)) 13531558Srgrimes return (1); 13541558Srgrimes strp = grp->gr_ptr.gt_net.nt_name; 13558871Srgrimes if (!xdr_string(xdrsp, &strp, 1356194880Sdfr MNTNAMLEN)) 13571558Srgrimes return (1); 13581558Srgrimes } 13591558Srgrimes hp = hp->ht_next; 13601558Srgrimes if (gotalldir && hp == (struct hostlist *)NULL) { 13611558Srgrimes hp = adp->dp_hosts; 13621558Srgrimes gotalldir = 0; 13631558Srgrimes } 13641558Srgrimes } 13651558Srgrimes } 13661558Srgrimes if (!xdr_bool(xdrsp, &false)) 13671558Srgrimes return (1); 1368100117Salfred if (put_exlist(dp->dp_right, xdrsp, adp, putdefp, brief)) 13691558Srgrimes return (1); 13701558Srgrimes } 13711558Srgrimes return (0); 13721558Srgrimes} 13731558Srgrimes 1374285128Straszstatic int 1375216587Scharnierxdr_explist(XDR *xdrsp, caddr_t cp) 1376100117Salfred{ 1377100117Salfred 1378100117Salfred return xdr_explist_common(xdrsp, cp, 0); 1379100117Salfred} 1380100117Salfred 1381285128Straszstatic int 1382216587Scharnierxdr_explist_brief(XDR *xdrsp, caddr_t cp) 1383100117Salfred{ 1384100117Salfred 1385100117Salfred return xdr_explist_common(xdrsp, cp, 1); 1386100117Salfred} 1387100117Salfred 1388285128Straszstatic char *line; 1389285128Straszstatic size_t linesize; 1390285128Straszstatic FILE *exp_file; 13911558Srgrimes 13921558Srgrimes/* 1393166440Spjd * Get the export list from one, currently open file 13941558Srgrimes */ 1395166440Spjdstatic void 1396216587Scharnierget_exportlist_one(void) 13971558Srgrimes{ 1398324955Smanu struct exportlist *ep; 13991558Srgrimes struct grouplist *grp, *tgrp; 14001558Srgrimes struct dirlist *dirhead; 1401166440Spjd struct statfs fsb; 140272650Sgreen struct xucred anon; 14031558Srgrimes char *cp, *endcp, *dirp, *hst, *usr, *dom, savedc; 1404166440Spjd int len, has_host, exflags, got_nondir, dirplen, netgrp; 14051558Srgrimes 1406192934Srmacklem v4root_phase = 0; 14071558Srgrimes dirhead = (struct dirlist *)NULL; 14081558Srgrimes while (get_line()) { 14091558Srgrimes if (debug) 141037663Scharnier warnx("got line %s", line); 14111558Srgrimes cp = line; 14121558Srgrimes nextfield(&cp, &endcp); 14131558Srgrimes if (*cp == '#') 14141558Srgrimes goto nextline; 14151558Srgrimes 14161558Srgrimes /* 14171558Srgrimes * Set defaults. 14181558Srgrimes */ 14191558Srgrimes has_host = FALSE; 14201558Srgrimes anon = def_anon; 14211558Srgrimes exflags = MNT_EXPORTED; 14221558Srgrimes got_nondir = 0; 14231558Srgrimes opt_flags = 0; 14241558Srgrimes ep = (struct exportlist *)NULL; 1425192934Srmacklem dirp = NULL; 14261558Srgrimes 14271558Srgrimes /* 1428192934Srmacklem * Handle the V4 root dir. 1429192934Srmacklem */ 1430192934Srmacklem if (*cp == 'V' && *(cp + 1) == '4' && *(cp + 2) == ':') { 1431192934Srmacklem /* 1432192934Srmacklem * V4: just indicates that it is the v4 root point, 1433192934Srmacklem * so skip over that and set v4root_phase. 1434192934Srmacklem */ 1435192934Srmacklem if (v4root_phase > 0) { 1436192934Srmacklem syslog(LOG_ERR, "V4:duplicate line, ignored"); 1437192934Srmacklem goto nextline; 1438192934Srmacklem } 1439192934Srmacklem v4root_phase = 1; 1440192934Srmacklem cp += 3; 1441192934Srmacklem nextfield(&cp, &endcp); 1442192934Srmacklem } 1443192934Srmacklem 1444192934Srmacklem /* 14451558Srgrimes * Create new exports list entry 14461558Srgrimes */ 14471558Srgrimes len = endcp-cp; 14481558Srgrimes tgrp = grp = get_grp(); 14491558Srgrimes while (len > 0) { 1450194880Sdfr if (len > MNTNAMLEN) { 1451329392Sbrd getexp_err(ep, tgrp, "mountpoint too long"); 14521558Srgrimes goto nextline; 14531558Srgrimes } 14541558Srgrimes if (*cp == '-') { 14551558Srgrimes if (ep == (struct exportlist *)NULL) { 1456329392Sbrd getexp_err(ep, tgrp, 1457329392Sbrd "flag before export path definition"); 14581558Srgrimes goto nextline; 14591558Srgrimes } 14601558Srgrimes if (debug) 146137663Scharnier warnx("doing opt %s", cp); 14621558Srgrimes got_nondir = 1; 14631558Srgrimes if (do_opt(&cp, &endcp, ep, grp, &has_host, 14641558Srgrimes &exflags, &anon)) { 1465329392Sbrd getexp_err(ep, tgrp, NULL); 14661558Srgrimes goto nextline; 14671558Srgrimes } 14681558Srgrimes } else if (*cp == '/') { 14691558Srgrimes savedc = *endcp; 14701558Srgrimes *endcp = '\0'; 1471192934Srmacklem if (v4root_phase > 1) { 1472192934Srmacklem if (dirp != NULL) { 1473329392Sbrd getexp_err(ep, tgrp, "Multiple V4 dirs"); 1474192934Srmacklem goto nextline; 1475192934Srmacklem } 1476192934Srmacklem } 14771558Srgrimes if (check_dirpath(cp) && 14781558Srgrimes statfs(cp, &fsb) >= 0) { 1479283008Srmacklem if ((fsb.f_flags & MNT_AUTOMOUNTED) != 0) 1480283008Srmacklem syslog(LOG_ERR, "Warning: exporting of " 1481283008Srmacklem "automounted fs %s not supported", cp); 14821558Srgrimes if (got_nondir) { 1483329392Sbrd getexp_err(ep, tgrp, "dirs must be first"); 14841558Srgrimes goto nextline; 14851558Srgrimes } 1486192934Srmacklem if (v4root_phase == 1) { 1487192934Srmacklem if (dirp != NULL) { 1488329392Sbrd getexp_err(ep, tgrp, "Multiple V4 dirs"); 14891558Srgrimes goto nextline; 14901558Srgrimes } 1491192934Srmacklem if (strlen(v4root_dirpath) == 0) { 1492192934Srmacklem strlcpy(v4root_dirpath, cp, 1493192934Srmacklem sizeof (v4root_dirpath)); 1494192934Srmacklem } else if (strcmp(v4root_dirpath, cp) 1495192934Srmacklem != 0) { 1496192934Srmacklem syslog(LOG_ERR, 1497192934Srmacklem "different V4 dirpath %s", cp); 1498329392Sbrd getexp_err(ep, tgrp, NULL); 1499192934Srmacklem goto nextline; 1500192934Srmacklem } 1501192934Srmacklem dirp = cp; 1502192934Srmacklem v4root_phase = 2; 1503192934Srmacklem got_nondir = 1; 1504192934Srmacklem ep = get_exp(); 15051558Srgrimes } else { 1506192934Srmacklem if (ep) { 1507192934Srmacklem if (ep->ex_fs.val[0] != 1508192934Srmacklem fsb.f_fsid.val[0] || 1509192934Srmacklem ep->ex_fs.val[1] != 1510192934Srmacklem fsb.f_fsid.val[1]) { 1511329392Sbrd getexp_err(ep, tgrp, 1512329392Sbrd "fsid mismatch"); 1513192934Srmacklem goto nextline; 1514192934Srmacklem } 1515192934Srmacklem } else { 1516192934Srmacklem /* 1517192934Srmacklem * See if this directory is already 1518192934Srmacklem * in the list. 1519192934Srmacklem */ 1520192934Srmacklem ep = ex_search(&fsb.f_fsid); 1521192934Srmacklem if (ep == (struct exportlist *)NULL) { 1522192934Srmacklem ep = get_exp(); 1523192934Srmacklem ep->ex_fs = fsb.f_fsid; 1524324234Smanu ep->ex_fsdir = strdup(fsb.f_mntonname); 1525324234Smanu if (ep->ex_fsdir == NULL) 1526192934Srmacklem out_of_mem(); 1527192934Srmacklem if (debug) 1528192934Srmacklem warnx( 1529192934Srmacklem "making new ep fs=0x%x,0x%x", 1530192934Srmacklem fsb.f_fsid.val[0], 1531192934Srmacklem fsb.f_fsid.val[1]); 1532192934Srmacklem } else if (debug) 1533192934Srmacklem warnx("found ep fs=0x%x,0x%x", 1534192934Srmacklem fsb.f_fsid.val[0], 1535192934Srmacklem fsb.f_fsid.val[1]); 1536192934Srmacklem } 1537192934Srmacklem 15381558Srgrimes /* 1539192934Srmacklem * Add dirpath to export mount point. 15401558Srgrimes */ 1541192934Srmacklem dirp = add_expdir(&dirhead, cp, len); 1542192934Srmacklem dirplen = len; 15431558Srgrimes } 15441558Srgrimes } else { 1545329392Sbrd getexp_err(ep, tgrp, 1546329392Sbrd "symbolic link in export path or statfs failed"); 15471558Srgrimes goto nextline; 15481558Srgrimes } 15491558Srgrimes *endcp = savedc; 15501558Srgrimes } else { 15511558Srgrimes savedc = *endcp; 15521558Srgrimes *endcp = '\0'; 15531558Srgrimes got_nondir = 1; 15541558Srgrimes if (ep == (struct exportlist *)NULL) { 1555329392Sbrd getexp_err(ep, tgrp, 1556329392Sbrd "host(s) before export path definition"); 15571558Srgrimes goto nextline; 15581558Srgrimes } 15591558Srgrimes 15601558Srgrimes /* 15611558Srgrimes * Get the host or netgroup. 15621558Srgrimes */ 15631558Srgrimes setnetgrent(cp); 15641558Srgrimes netgrp = getnetgrent(&hst, &usr, &dom); 15651558Srgrimes do { 15661558Srgrimes if (has_host) { 15671558Srgrimes grp->gr_next = get_grp(); 15681558Srgrimes grp = grp->gr_next; 15691558Srgrimes } 15701558Srgrimes if (netgrp) { 157137003Sjoerg if (hst == 0) { 157237663Scharnier syslog(LOG_ERR, 157337663Scharnier "null hostname in netgroup %s, skipping", cp); 157437004Sjoerg grp->gr_type = GT_IGNORE; 157537003Sjoerg } else if (get_host(hst, grp, tgrp)) { 157637663Scharnier syslog(LOG_ERR, 157737663Scharnier "bad host %s in netgroup %s, skipping", hst, cp); 157829317Sjlemon grp->gr_type = GT_IGNORE; 15791558Srgrimes } 15807401Swpaul } else if (get_host(cp, grp, tgrp)) { 158137663Scharnier syslog(LOG_ERR, "bad host %s, skipping", cp); 158229317Sjlemon grp->gr_type = GT_IGNORE; 15831558Srgrimes } 15841558Srgrimes has_host = TRUE; 15851558Srgrimes } while (netgrp && getnetgrent(&hst, &usr, &dom)); 15861558Srgrimes endnetgrent(); 15871558Srgrimes *endcp = savedc; 15881558Srgrimes } 15891558Srgrimes cp = endcp; 15901558Srgrimes nextfield(&cp, &endcp); 15911558Srgrimes len = endcp - cp; 15921558Srgrimes } 15931558Srgrimes if (check_options(dirhead)) { 1594329392Sbrd getexp_err(ep, tgrp, NULL); 15951558Srgrimes goto nextline; 15961558Srgrimes } 15971558Srgrimes if (!has_host) { 159875641Siedowse grp->gr_type = GT_DEFAULT; 15991558Srgrimes if (debug) 160037663Scharnier warnx("adding a default entry"); 16011558Srgrimes 16021558Srgrimes /* 16031558Srgrimes * Don't allow a network export coincide with a list of 16041558Srgrimes * host(s) on the same line. 16051558Srgrimes */ 16061558Srgrimes } else if ((opt_flags & OP_NET) && tgrp->gr_next) { 1607329392Sbrd getexp_err(ep, tgrp, "network/host conflict"); 16081558Srgrimes goto nextline; 160929317Sjlemon 161074462Salfred /* 161174462Salfred * If an export list was specified on this line, make sure 161229317Sjlemon * that we have at least one valid entry, otherwise skip it. 161329317Sjlemon */ 161429317Sjlemon } else { 161529317Sjlemon grp = tgrp; 161674462Salfred while (grp && grp->gr_type == GT_IGNORE) 161729317Sjlemon grp = grp->gr_next; 161829317Sjlemon if (! grp) { 1619329392Sbrd getexp_err(ep, tgrp, "no valid entries"); 162029317Sjlemon goto nextline; 162129317Sjlemon } 16221558Srgrimes } 16231558Srgrimes 1624192934Srmacklem if (v4root_phase == 1) { 1625329392Sbrd getexp_err(ep, tgrp, "V4:root, no dirp, ignored"); 1626192934Srmacklem goto nextline; 1627192934Srmacklem } 1628192934Srmacklem 16291558Srgrimes /* 16301558Srgrimes * Loop through hosts, pushing the exports into the kernel. 16311558Srgrimes * After loop, tgrp points to the start of the list and 16321558Srgrimes * grp points to the last entry in the list. 16331558Srgrimes */ 16341558Srgrimes grp = tgrp; 16351558Srgrimes do { 163675635Siedowse if (do_mount(ep, grp, exflags, &anon, dirp, dirplen, 163775635Siedowse &fsb)) { 1638329392Sbrd getexp_err(ep, tgrp, NULL); 163975635Siedowse goto nextline; 164075635Siedowse } 16411558Srgrimes } while (grp->gr_next && (grp = grp->gr_next)); 16421558Srgrimes 16431558Srgrimes /* 1644192934Srmacklem * For V4: don't enter in mount lists. 1645192934Srmacklem */ 1646194773Srmacklem if (v4root_phase > 0 && v4root_phase <= 2) { 1647194773Srmacklem /* 1648194773Srmacklem * Since these structures aren't used by mountd, 1649194773Srmacklem * free them up now. 1650194773Srmacklem */ 1651194773Srmacklem if (ep != NULL) 1652194773Srmacklem free_exp(ep); 1653194773Srmacklem while (tgrp != NULL) { 1654194773Srmacklem grp = tgrp; 1655194773Srmacklem tgrp = tgrp->gr_next; 1656194773Srmacklem free_grp(grp); 1657194773Srmacklem } 1658192934Srmacklem goto nextline; 1659194773Srmacklem } 1660192934Srmacklem 1661192934Srmacklem /* 16621558Srgrimes * Success. Update the data structures. 16631558Srgrimes */ 16641558Srgrimes if (has_host) { 16659336Sdfr hang_dirp(dirhead, tgrp, ep, opt_flags); 16661558Srgrimes grp->gr_next = grphead; 16671558Srgrimes grphead = tgrp; 16681558Srgrimes } else { 16691558Srgrimes hang_dirp(dirhead, (struct grouplist *)NULL, ep, 16709336Sdfr opt_flags); 16711558Srgrimes free_grp(grp); 16721558Srgrimes } 16731558Srgrimes dirhead = (struct dirlist *)NULL; 16741558Srgrimes if ((ep->ex_flag & EX_LINKED) == 0) { 1675324955Smanu SLIST_INSERT_HEAD(&exphead, ep, entries); 16761558Srgrimes 16771558Srgrimes ep->ex_flag |= EX_LINKED; 16781558Srgrimes } 16791558Srgrimesnextline: 1680192934Srmacklem v4root_phase = 0; 16811558Srgrimes if (dirhead) { 16821558Srgrimes free_dir(dirhead); 16831558Srgrimes dirhead = (struct dirlist *)NULL; 16841558Srgrimes } 16851558Srgrimes } 16861558Srgrimes} 16871558Srgrimes 16881558Srgrimes/* 1689166440Spjd * Get the export list from all specified files 1690166440Spjd */ 1691285128Straszstatic void 1692216587Scharnierget_exportlist(void) 1693166440Spjd{ 1694166440Spjd struct exportlist *ep, *ep2; 1695166440Spjd struct grouplist *grp, *tgrp; 1696166440Spjd struct export_args export; 1697166440Spjd struct iovec *iov; 1698166440Spjd struct statfs *fsp, *mntbufp; 1699166440Spjd struct xvfsconf vfc; 1700166440Spjd char errmsg[255]; 1701230352Seadler int num, i; 1702166440Spjd int iovlen; 1703168684Spjd int done; 1704192934Srmacklem struct nfsex_args eargs; 1705166440Spjd 1706241568Srmacklem if (suspend_nfsd != 0) 1707241568Srmacklem (void)nfssvc(NFSSVC_SUSPENDNFSD, NULL); 1708192934Srmacklem v4root_dirpath[0] = '\0'; 1709166440Spjd bzero(&export, sizeof(export)); 1710166440Spjd export.ex_flags = MNT_DELEXPORT; 1711166440Spjd iov = NULL; 1712166440Spjd iovlen = 0; 1713166440Spjd bzero(errmsg, sizeof(errmsg)); 1714166440Spjd 1715166440Spjd /* 1716166440Spjd * First, get rid of the old list 1717166440Spjd */ 1718324955Smanu SLIST_FOREACH_SAFE(ep, &exphead, entries, ep2) { 1719324955Smanu SLIST_REMOVE(&exphead, ep, exportlist, entries); 1720324955Smanu free_exp(ep); 1721166440Spjd } 1722166440Spjd 1723166440Spjd grp = grphead; 1724166440Spjd while (grp) { 1725166440Spjd tgrp = grp; 1726166440Spjd grp = grp->gr_next; 1727166440Spjd free_grp(tgrp); 1728166440Spjd } 1729166440Spjd grphead = (struct grouplist *)NULL; 1730166440Spjd 1731166440Spjd /* 1732192934Srmacklem * and the old V4 root dir. 1733192934Srmacklem */ 1734192934Srmacklem bzero(&eargs, sizeof (eargs)); 1735192934Srmacklem eargs.export.ex_flags = MNT_DELEXPORT; 1736282214Strasz if (nfssvc(NFSSVC_V4ROOTEXPORT, (caddr_t)&eargs) < 0 && 1737192934Srmacklem errno != ENOENT) 1738192934Srmacklem syslog(LOG_ERR, "Can't delete exports for V4:"); 1739192934Srmacklem 1740192934Srmacklem /* 1741192934Srmacklem * and clear flag that notes if a public fh has been exported. 1742192934Srmacklem */ 1743192934Srmacklem has_publicfh = 0; 1744192934Srmacklem 1745192934Srmacklem /* 1746166440Spjd * And delete exports that are in the kernel for all local 1747166440Spjd * filesystems. 1748166440Spjd * XXX: Should know how to handle all local exportable filesystems. 1749166440Spjd */ 1750166440Spjd num = getmntinfo(&mntbufp, MNT_NOWAIT); 1751166440Spjd 1752166440Spjd if (num > 0) { 1753166440Spjd build_iovec(&iov, &iovlen, "fstype", NULL, 0); 1754166440Spjd build_iovec(&iov, &iovlen, "fspath", NULL, 0); 1755166440Spjd build_iovec(&iov, &iovlen, "from", NULL, 0); 1756166440Spjd build_iovec(&iov, &iovlen, "update", NULL, 0); 1757166440Spjd build_iovec(&iov, &iovlen, "export", &export, sizeof(export)); 1758166440Spjd build_iovec(&iov, &iovlen, "errmsg", errmsg, sizeof(errmsg)); 1759166440Spjd } 1760166440Spjd 1761166440Spjd for (i = 0; i < num; i++) { 1762166440Spjd fsp = &mntbufp[i]; 1763166440Spjd if (getvfsbyname(fsp->f_fstypename, &vfc) != 0) { 1764166440Spjd syslog(LOG_ERR, "getvfsbyname() failed for %s", 1765166440Spjd fsp->f_fstypename); 1766166440Spjd continue; 1767166440Spjd } 1768166440Spjd 1769166440Spjd /* 1770281699Ssjg * We do not need to delete "export" flag from 1771281699Ssjg * filesystems that do not have it set. 1772281699Ssjg */ 1773281699Ssjg if (!(fsp->f_flags & MNT_EXPORTED)) 1774281699Ssjg continue; 1775281699Ssjg /* 1776166440Spjd * Do not delete export for network filesystem by 1777166440Spjd * passing "export" arg to nmount(). 1778166440Spjd * It only makes sense to do this for local filesystems. 1779166440Spjd */ 1780166440Spjd if (vfc.vfc_flags & VFCF_NETWORK) 1781166440Spjd continue; 1782166440Spjd 1783166440Spjd iov[1].iov_base = fsp->f_fstypename; 1784166440Spjd iov[1].iov_len = strlen(fsp->f_fstypename) + 1; 1785166440Spjd iov[3].iov_base = fsp->f_mntonname; 1786166440Spjd iov[3].iov_len = strlen(fsp->f_mntonname) + 1; 1787166440Spjd iov[5].iov_base = fsp->f_mntfromname; 1788166440Spjd iov[5].iov_len = strlen(fsp->f_mntfromname) + 1; 1789270183Sbdrewery errmsg[0] = '\0'; 1790166440Spjd 1791278523Skib /* 1792278523Skib * EXDEV is returned when path exists but is not a 1793278523Skib * mount point. May happens if raced with unmount. 1794278523Skib */ 1795166440Spjd if (nmount(iov, iovlen, fsp->f_flags) < 0 && 1796278523Skib errno != ENOENT && errno != ENOTSUP && errno != EXDEV) { 1797166440Spjd syslog(LOG_ERR, 1798166440Spjd "can't delete exports for %s: %m %s", 1799166440Spjd fsp->f_mntonname, errmsg); 1800166440Spjd } 1801166440Spjd } 1802166440Spjd 1803166440Spjd if (iov != NULL) { 1804166440Spjd /* Free strings allocated by strdup() in getmntopts.c */ 1805166440Spjd free(iov[0].iov_base); /* fstype */ 1806166440Spjd free(iov[2].iov_base); /* fspath */ 1807166440Spjd free(iov[4].iov_base); /* from */ 1808166440Spjd free(iov[6].iov_base); /* update */ 1809166440Spjd free(iov[8].iov_base); /* export */ 1810166440Spjd free(iov[10].iov_base); /* errmsg */ 1811166440Spjd 1812166440Spjd /* free iov, allocated by realloc() */ 1813166440Spjd free(iov); 1814166440Spjd iovlen = 0; 1815166440Spjd } 1816166440Spjd 1817166440Spjd /* 1818166440Spjd * Read in the exports file and build the list, calling 1819166440Spjd * nmount() as we go along to push the export rules into the kernel. 1820166440Spjd */ 1821168684Spjd done = 0; 1822166440Spjd for (i = 0; exnames[i] != NULL; i++) { 1823166440Spjd if (debug) 1824166440Spjd warnx("reading exports from %s", exnames[i]); 1825166440Spjd if ((exp_file = fopen(exnames[i], "r")) == NULL) { 1826168684Spjd syslog(LOG_WARNING, "can't open %s", exnames[i]); 1827168684Spjd continue; 1828166440Spjd } 1829166440Spjd get_exportlist_one(); 1830166440Spjd fclose(exp_file); 1831168684Spjd done++; 1832166440Spjd } 1833168684Spjd if (done == 0) { 1834168684Spjd syslog(LOG_ERR, "can't open any exports file"); 1835168684Spjd exit(2); 1836168684Spjd } 1837192934Srmacklem 1838192934Srmacklem /* 1839192934Srmacklem * If there was no public fh, clear any previous one set. 1840192934Srmacklem */ 1841282214Strasz if (has_publicfh == 0) 1842192934Srmacklem (void) nfssvc(NFSSVC_NOPUBLICFH, NULL); 1843241568Srmacklem 1844241568Srmacklem /* Resume the nfsd. If they weren't suspended, this is harmless. */ 1845241568Srmacklem (void)nfssvc(NFSSVC_RESUMENFSD, NULL); 1846166440Spjd} 1847166440Spjd 1848166440Spjd/* 18491558Srgrimes * Allocate an export list element 18501558Srgrimes */ 1851285128Straszstatic struct exportlist * 1852216587Scharnierget_exp(void) 18531558Srgrimes{ 18541558Srgrimes struct exportlist *ep; 18551558Srgrimes 1856224003Sdelphij ep = (struct exportlist *)calloc(1, sizeof (struct exportlist)); 18571558Srgrimes if (ep == (struct exportlist *)NULL) 18581558Srgrimes out_of_mem(); 18591558Srgrimes return (ep); 18601558Srgrimes} 18611558Srgrimes 18621558Srgrimes/* 18631558Srgrimes * Allocate a group list element 18641558Srgrimes */ 1865285128Straszstatic struct grouplist * 1866216587Scharnierget_grp(void) 18671558Srgrimes{ 18681558Srgrimes struct grouplist *gp; 18691558Srgrimes 1870224003Sdelphij gp = (struct grouplist *)calloc(1, sizeof (struct grouplist)); 18711558Srgrimes if (gp == (struct grouplist *)NULL) 18721558Srgrimes out_of_mem(); 18731558Srgrimes return (gp); 18741558Srgrimes} 18751558Srgrimes 18761558Srgrimes/* 18771558Srgrimes * Clean up upon an error in get_exportlist(). 18781558Srgrimes */ 1879285128Straszstatic void 1880329392Sbrdgetexp_err(struct exportlist *ep, struct grouplist *grp, const char *reason) 18811558Srgrimes{ 18821558Srgrimes struct grouplist *tgrp; 18831558Srgrimes 1884329392Sbrd if (!(opt_flags & OP_QUIET)) { 1885329392Sbrd if (reason != NULL) 1886329392Sbrd syslog(LOG_ERR, "bad exports list line '%s': %s", line, 1887329392Sbrd reason); 1888329392Sbrd else 1889329392Sbrd syslog(LOG_ERR, "bad exports list line '%s'", line); 1890329392Sbrd } 18911558Srgrimes if (ep && (ep->ex_flag & EX_LINKED) == 0) 18921558Srgrimes free_exp(ep); 18931558Srgrimes while (grp) { 18941558Srgrimes tgrp = grp; 18951558Srgrimes grp = grp->gr_next; 18961558Srgrimes free_grp(tgrp); 18971558Srgrimes } 18981558Srgrimes} 18991558Srgrimes 19001558Srgrimes/* 19011558Srgrimes * Search the export list for a matching fs. 19021558Srgrimes */ 1903285128Straszstatic struct exportlist * 1904216587Scharnierex_search(fsid_t *fsid) 19051558Srgrimes{ 19061558Srgrimes struct exportlist *ep; 19071558Srgrimes 1908324955Smanu SLIST_FOREACH(ep, &exphead, entries) { 19091558Srgrimes if (ep->ex_fs.val[0] == fsid->val[0] && 19101558Srgrimes ep->ex_fs.val[1] == fsid->val[1]) 19111558Srgrimes return (ep); 19121558Srgrimes } 1913324955Smanu 19141558Srgrimes return (ep); 19151558Srgrimes} 19161558Srgrimes 19171558Srgrimes/* 19181558Srgrimes * Add a directory path to the list. 19191558Srgrimes */ 1920285128Straszstatic char * 1921216587Scharnieradd_expdir(struct dirlist **dpp, char *cp, int len) 19221558Srgrimes{ 19231558Srgrimes struct dirlist *dp; 19241558Srgrimes 1925324234Smanu dp = malloc(sizeof (struct dirlist)); 192637663Scharnier if (dp == (struct dirlist *)NULL) 192737663Scharnier out_of_mem(); 19281558Srgrimes dp->dp_left = *dpp; 19291558Srgrimes dp->dp_right = (struct dirlist *)NULL; 19301558Srgrimes dp->dp_flag = 0; 19311558Srgrimes dp->dp_hosts = (struct hostlist *)NULL; 1932324234Smanu dp->dp_dirp = strndup(cp, len); 1933324234Smanu if (dp->dp_dirp == NULL) 1934324234Smanu out_of_mem(); 19351558Srgrimes *dpp = dp; 19361558Srgrimes return (dp->dp_dirp); 19371558Srgrimes} 19381558Srgrimes 19391558Srgrimes/* 19401558Srgrimes * Hang the dir list element off the dirpath binary tree as required 19411558Srgrimes * and update the entry for host. 19421558Srgrimes */ 1943285128Straszstatic void 1944216587Scharnierhang_dirp(struct dirlist *dp, struct grouplist *grp, struct exportlist *ep, 1945216587Scharnier int flags) 19461558Srgrimes{ 19471558Srgrimes struct hostlist *hp; 19481558Srgrimes struct dirlist *dp2; 19491558Srgrimes 19509336Sdfr if (flags & OP_ALLDIRS) { 19511558Srgrimes if (ep->ex_defdir) 19521558Srgrimes free((caddr_t)dp); 19531558Srgrimes else 19541558Srgrimes ep->ex_defdir = dp; 19559336Sdfr if (grp == (struct grouplist *)NULL) { 19561558Srgrimes ep->ex_defdir->dp_flag |= DP_DEFSET; 1957240902Srmacklem /* Save the default security flavors list. */ 1958240902Srmacklem ep->ex_defnumsecflavors = ep->ex_numsecflavors; 1959240902Srmacklem if (ep->ex_numsecflavors > 0) 1960240902Srmacklem memcpy(ep->ex_defsecflavors, ep->ex_secflavors, 1961240902Srmacklem sizeof(ep->ex_secflavors)); 19629336Sdfr } else while (grp) { 19631558Srgrimes hp = get_ht(); 19641558Srgrimes hp->ht_grp = grp; 19651558Srgrimes hp->ht_next = ep->ex_defdir->dp_hosts; 19661558Srgrimes ep->ex_defdir->dp_hosts = hp; 1967240902Srmacklem /* Save the security flavors list for this host set. */ 1968240902Srmacklem grp->gr_numsecflavors = ep->ex_numsecflavors; 1969240902Srmacklem if (ep->ex_numsecflavors > 0) 1970240902Srmacklem memcpy(grp->gr_secflavors, ep->ex_secflavors, 1971240902Srmacklem sizeof(ep->ex_secflavors)); 19721558Srgrimes grp = grp->gr_next; 19731558Srgrimes } 19741558Srgrimes } else { 19751558Srgrimes 19761558Srgrimes /* 197737663Scharnier * Loop through the directories adding them to the tree. 19781558Srgrimes */ 19791558Srgrimes while (dp) { 19801558Srgrimes dp2 = dp->dp_left; 1981240902Srmacklem add_dlist(&ep->ex_dirl, dp, grp, flags, ep); 19821558Srgrimes dp = dp2; 19831558Srgrimes } 19841558Srgrimes } 19851558Srgrimes} 19861558Srgrimes 19871558Srgrimes/* 19881558Srgrimes * Traverse the binary tree either updating a node that is already there 19891558Srgrimes * for the new directory or adding the new node. 19901558Srgrimes */ 1991285128Straszstatic void 1992216587Scharnieradd_dlist(struct dirlist **dpp, struct dirlist *newdp, struct grouplist *grp, 1993240902Srmacklem int flags, struct exportlist *ep) 19941558Srgrimes{ 19951558Srgrimes struct dirlist *dp; 19961558Srgrimes struct hostlist *hp; 19971558Srgrimes int cmp; 19981558Srgrimes 19991558Srgrimes dp = *dpp; 20001558Srgrimes if (dp) { 20011558Srgrimes cmp = strcmp(dp->dp_dirp, newdp->dp_dirp); 20021558Srgrimes if (cmp > 0) { 2003240902Srmacklem add_dlist(&dp->dp_left, newdp, grp, flags, ep); 20041558Srgrimes return; 20051558Srgrimes } else if (cmp < 0) { 2006240902Srmacklem add_dlist(&dp->dp_right, newdp, grp, flags, ep); 20071558Srgrimes return; 20081558Srgrimes } else 20091558Srgrimes free((caddr_t)newdp); 20101558Srgrimes } else { 20111558Srgrimes dp = newdp; 20121558Srgrimes dp->dp_left = (struct dirlist *)NULL; 20131558Srgrimes *dpp = dp; 20141558Srgrimes } 20151558Srgrimes if (grp) { 20161558Srgrimes 20171558Srgrimes /* 20181558Srgrimes * Hang all of the host(s) off of the directory point. 20191558Srgrimes */ 20201558Srgrimes do { 20211558Srgrimes hp = get_ht(); 20221558Srgrimes hp->ht_grp = grp; 20231558Srgrimes hp->ht_next = dp->dp_hosts; 20241558Srgrimes dp->dp_hosts = hp; 2025240902Srmacklem /* Save the security flavors list for this host set. */ 2026240902Srmacklem grp->gr_numsecflavors = ep->ex_numsecflavors; 2027240902Srmacklem if (ep->ex_numsecflavors > 0) 2028240902Srmacklem memcpy(grp->gr_secflavors, ep->ex_secflavors, 2029240902Srmacklem sizeof(ep->ex_secflavors)); 20301558Srgrimes grp = grp->gr_next; 20311558Srgrimes } while (grp); 20329336Sdfr } else { 20331558Srgrimes dp->dp_flag |= DP_DEFSET; 2034240902Srmacklem /* Save the default security flavors list. */ 2035240902Srmacklem ep->ex_defnumsecflavors = ep->ex_numsecflavors; 2036240902Srmacklem if (ep->ex_numsecflavors > 0) 2037240902Srmacklem memcpy(ep->ex_defsecflavors, ep->ex_secflavors, 2038240902Srmacklem sizeof(ep->ex_secflavors)); 20399336Sdfr } 20401558Srgrimes} 20411558Srgrimes 20421558Srgrimes/* 20431558Srgrimes * Search for a dirpath on the export point. 20441558Srgrimes */ 2045285128Straszstatic struct dirlist * 2046216587Scharnierdirp_search(struct dirlist *dp, char *dirp) 20471558Srgrimes{ 20481558Srgrimes int cmp; 20491558Srgrimes 20501558Srgrimes if (dp) { 205174462Salfred cmp = strcmp(dp->dp_dirp, dirp); 20521558Srgrimes if (cmp > 0) 205374462Salfred return (dirp_search(dp->dp_left, dirp)); 20541558Srgrimes else if (cmp < 0) 205574462Salfred return (dirp_search(dp->dp_right, dirp)); 20561558Srgrimes else 20571558Srgrimes return (dp); 20581558Srgrimes } 20591558Srgrimes return (dp); 20601558Srgrimes} 20611558Srgrimes 20621558Srgrimes/* 20631558Srgrimes * Scan for a host match in a directory tree. 20641558Srgrimes */ 2065285128Straszstatic int 2066216587Scharnierchk_host(struct dirlist *dp, struct sockaddr *saddr, int *defsetp, 2067240902Srmacklem int *hostsetp, int *numsecflavors, int **secflavorsp) 20681558Srgrimes{ 20691558Srgrimes struct hostlist *hp; 20701558Srgrimes struct grouplist *grp; 207174462Salfred struct addrinfo *ai; 20721558Srgrimes 20731558Srgrimes if (dp) { 20741558Srgrimes if (dp->dp_flag & DP_DEFSET) 20759336Sdfr *defsetp = dp->dp_flag; 20761558Srgrimes hp = dp->dp_hosts; 20771558Srgrimes while (hp) { 20781558Srgrimes grp = hp->ht_grp; 20791558Srgrimes switch (grp->gr_type) { 20801558Srgrimes case GT_HOST: 208174462Salfred ai = grp->gr_ptr.gt_addrinfo; 208274462Salfred for (; ai; ai = ai->ai_next) { 208375801Siedowse if (!sacmp(ai->ai_addr, saddr, NULL)) { 208474462Salfred *hostsetp = 208574462Salfred (hp->ht_flag | DP_HOSTSET); 2086240902Srmacklem if (numsecflavors != NULL) { 2087240902Srmacklem *numsecflavors = 2088240902Srmacklem grp->gr_numsecflavors; 2089240902Srmacklem *secflavorsp = 2090240902Srmacklem grp->gr_secflavors; 2091240902Srmacklem } 209274462Salfred return (1); 209374462Salfred } 20949336Sdfr } 209575801Siedowse break; 20961558Srgrimes case GT_NET: 209775801Siedowse if (!sacmp(saddr, (struct sockaddr *) 209875801Siedowse &grp->gr_ptr.gt_net.nt_net, 209975801Siedowse (struct sockaddr *) 210075801Siedowse &grp->gr_ptr.gt_net.nt_mask)) { 210174462Salfred *hostsetp = (hp->ht_flag | DP_HOSTSET); 2102240902Srmacklem if (numsecflavors != NULL) { 2103240902Srmacklem *numsecflavors = 2104240902Srmacklem grp->gr_numsecflavors; 2105240902Srmacklem *secflavorsp = 2106240902Srmacklem grp->gr_secflavors; 2107240902Srmacklem } 210874462Salfred return (1); 210974462Salfred } 211075801Siedowse break; 211175801Siedowse } 21121558Srgrimes hp = hp->ht_next; 21131558Srgrimes } 21141558Srgrimes } 21151558Srgrimes return (0); 21161558Srgrimes} 21171558Srgrimes 21181558Srgrimes/* 21191558Srgrimes * Scan tree for a host that matches the address. 21201558Srgrimes */ 2121285128Straszstatic int 2122216587Scharnierscan_tree(struct dirlist *dp, struct sockaddr *saddr) 21231558Srgrimes{ 21249336Sdfr int defset, hostset; 21251558Srgrimes 21261558Srgrimes if (dp) { 21271558Srgrimes if (scan_tree(dp->dp_left, saddr)) 21281558Srgrimes return (1); 2129240902Srmacklem if (chk_host(dp, saddr, &defset, &hostset, NULL, NULL)) 21301558Srgrimes return (1); 21311558Srgrimes if (scan_tree(dp->dp_right, saddr)) 21321558Srgrimes return (1); 21331558Srgrimes } 21341558Srgrimes return (0); 21351558Srgrimes} 21361558Srgrimes 21371558Srgrimes/* 21381558Srgrimes * Traverse the dirlist tree and free it up. 21391558Srgrimes */ 2140285128Straszstatic void 2141216587Scharnierfree_dir(struct dirlist *dp) 21421558Srgrimes{ 21431558Srgrimes 21441558Srgrimes if (dp) { 21451558Srgrimes free_dir(dp->dp_left); 21461558Srgrimes free_dir(dp->dp_right); 21471558Srgrimes free_host(dp->dp_hosts); 2148324234Smanu free(dp->dp_dirp); 2149324234Smanu free(dp); 21501558Srgrimes } 21511558Srgrimes} 21521558Srgrimes 21531558Srgrimes/* 2154184588Sdfr * Parse a colon separated list of security flavors 2155184588Sdfr */ 2156285128Straszstatic int 2157216587Scharnierparsesec(char *seclist, struct exportlist *ep) 2158184588Sdfr{ 2159184588Sdfr char *cp, savedc; 2160184588Sdfr int flavor; 2161184588Sdfr 2162184588Sdfr ep->ex_numsecflavors = 0; 2163184588Sdfr for (;;) { 2164184588Sdfr cp = strchr(seclist, ':'); 2165184588Sdfr if (cp) { 2166184588Sdfr savedc = *cp; 2167184588Sdfr *cp = '\0'; 2168184588Sdfr } 2169184588Sdfr 2170184588Sdfr if (!strcmp(seclist, "sys")) 2171184588Sdfr flavor = AUTH_SYS; 2172184588Sdfr else if (!strcmp(seclist, "krb5")) 2173184588Sdfr flavor = RPCSEC_GSS_KRB5; 2174184588Sdfr else if (!strcmp(seclist, "krb5i")) 2175184588Sdfr flavor = RPCSEC_GSS_KRB5I; 2176184588Sdfr else if (!strcmp(seclist, "krb5p")) 2177184588Sdfr flavor = RPCSEC_GSS_KRB5P; 2178184588Sdfr else { 2179184588Sdfr if (cp) 2180184588Sdfr *cp = savedc; 2181184588Sdfr syslog(LOG_ERR, "bad sec flavor: %s", seclist); 2182184588Sdfr return (1); 2183184588Sdfr } 2184184588Sdfr if (ep->ex_numsecflavors == MAXSECFLAVORS) { 2185184588Sdfr if (cp) 2186184588Sdfr *cp = savedc; 2187184588Sdfr syslog(LOG_ERR, "too many sec flavors: %s", seclist); 2188184588Sdfr return (1); 2189184588Sdfr } 2190184588Sdfr ep->ex_secflavors[ep->ex_numsecflavors] = flavor; 2191184588Sdfr ep->ex_numsecflavors++; 2192184588Sdfr if (cp) { 2193184588Sdfr *cp = savedc; 2194184588Sdfr seclist = cp + 1; 2195184588Sdfr } else { 2196184588Sdfr break; 2197184588Sdfr } 2198184588Sdfr } 2199184588Sdfr return (0); 2200184588Sdfr} 2201184588Sdfr 2202184588Sdfr/* 22031558Srgrimes * Parse the option string and update fields. 22041558Srgrimes * Option arguments may either be -<option>=<value> or 22051558Srgrimes * -<option> <value> 22061558Srgrimes */ 2207285128Straszstatic int 2208216587Scharnierdo_opt(char **cpp, char **endcpp, struct exportlist *ep, struct grouplist *grp, 2209216587Scharnier int *has_hostp, int *exflagsp, struct xucred *cr) 22101558Srgrimes{ 22111558Srgrimes char *cpoptarg, *cpoptend; 22121558Srgrimes char *cp, *endcp, *cpopt, savedc, savedc2; 22131558Srgrimes int allflag, usedarg; 22141558Srgrimes 221551968Salfred savedc2 = '\0'; 22161558Srgrimes cpopt = *cpp; 22171558Srgrimes cpopt++; 22181558Srgrimes cp = *endcpp; 22191558Srgrimes savedc = *cp; 22201558Srgrimes *cp = '\0'; 22211558Srgrimes while (cpopt && *cpopt) { 22221558Srgrimes allflag = 1; 22231558Srgrimes usedarg = -2; 222437663Scharnier if ((cpoptend = strchr(cpopt, ','))) { 22251558Srgrimes *cpoptend++ = '\0'; 222637663Scharnier if ((cpoptarg = strchr(cpopt, '='))) 22271558Srgrimes *cpoptarg++ = '\0'; 22281558Srgrimes } else { 222937663Scharnier if ((cpoptarg = strchr(cpopt, '='))) 22301558Srgrimes *cpoptarg++ = '\0'; 22311558Srgrimes else { 22321558Srgrimes *cp = savedc; 22331558Srgrimes nextfield(&cp, &endcp); 22341558Srgrimes **endcpp = '\0'; 22351558Srgrimes if (endcp > cp && *cp != '-') { 22361558Srgrimes cpoptarg = cp; 22371558Srgrimes savedc2 = *endcp; 22381558Srgrimes *endcp = '\0'; 22391558Srgrimes usedarg = 0; 22401558Srgrimes } 22411558Srgrimes } 22421558Srgrimes } 22431558Srgrimes if (!strcmp(cpopt, "ro") || !strcmp(cpopt, "o")) { 22441558Srgrimes *exflagsp |= MNT_EXRDONLY; 22451558Srgrimes } else if (cpoptarg && (!strcmp(cpopt, "maproot") || 22461558Srgrimes !(allflag = strcmp(cpopt, "mapall")) || 22471558Srgrimes !strcmp(cpopt, "root") || !strcmp(cpopt, "r"))) { 22481558Srgrimes usedarg++; 22491558Srgrimes parsecred(cpoptarg, cr); 22501558Srgrimes if (allflag == 0) { 22511558Srgrimes *exflagsp |= MNT_EXPORTANON; 22521558Srgrimes opt_flags |= OP_MAPALL; 22531558Srgrimes } else 22541558Srgrimes opt_flags |= OP_MAPROOT; 22551558Srgrimes } else if (cpoptarg && (!strcmp(cpopt, "mask") || 225675801Siedowse !strcmp(cpopt, "m"))) { 22571558Srgrimes if (get_net(cpoptarg, &grp->gr_ptr.gt_net, 1)) { 225837663Scharnier syslog(LOG_ERR, "bad mask: %s", cpoptarg); 22591558Srgrimes return (1); 22601558Srgrimes } 22611558Srgrimes usedarg++; 22621558Srgrimes opt_flags |= OP_MASK; 22631558Srgrimes } else if (cpoptarg && (!strcmp(cpopt, "network") || 22641558Srgrimes !strcmp(cpopt, "n"))) { 226574462Salfred if (strchr(cpoptarg, '/') != NULL) { 226674462Salfred if (debug) 226774462Salfred fprintf(stderr, "setting OP_MASKLEN\n"); 226874462Salfred opt_flags |= OP_MASKLEN; 226974462Salfred } 22701558Srgrimes if (grp->gr_type != GT_NULL) { 227137663Scharnier syslog(LOG_ERR, "network/host conflict"); 22721558Srgrimes return (1); 22731558Srgrimes } else if (get_net(cpoptarg, &grp->gr_ptr.gt_net, 0)) { 227437663Scharnier syslog(LOG_ERR, "bad net: %s", cpoptarg); 22751558Srgrimes return (1); 22761558Srgrimes } 22771558Srgrimes grp->gr_type = GT_NET; 22781558Srgrimes *has_hostp = 1; 22791558Srgrimes usedarg++; 22801558Srgrimes opt_flags |= OP_NET; 22811558Srgrimes } else if (!strcmp(cpopt, "alldirs")) { 22821558Srgrimes opt_flags |= OP_ALLDIRS; 228327447Sdfr } else if (!strcmp(cpopt, "public")) { 228427447Sdfr *exflagsp |= MNT_EXPUBLIC; 228527447Sdfr } else if (!strcmp(cpopt, "webnfs")) { 228627447Sdfr *exflagsp |= (MNT_EXPUBLIC|MNT_EXRDONLY|MNT_EXPORTANON); 228727447Sdfr opt_flags |= OP_MAPALL; 228827447Sdfr } else if (cpoptarg && !strcmp(cpopt, "index")) { 228927447Sdfr ep->ex_indexfile = strdup(cpoptarg); 2290100336Sjoerg } else if (!strcmp(cpopt, "quiet")) { 2291100336Sjoerg opt_flags |= OP_QUIET; 2292247034Spluknet } else if (cpoptarg && !strcmp(cpopt, "sec")) { 2293184588Sdfr if (parsesec(cpoptarg, ep)) 2294184588Sdfr return (1); 2295184588Sdfr opt_flags |= OP_SEC; 2296184588Sdfr usedarg++; 22971558Srgrimes } else { 229837663Scharnier syslog(LOG_ERR, "bad opt %s", cpopt); 22991558Srgrimes return (1); 23001558Srgrimes } 23011558Srgrimes if (usedarg >= 0) { 23021558Srgrimes *endcp = savedc2; 23031558Srgrimes **endcpp = savedc; 23041558Srgrimes if (usedarg > 0) { 23051558Srgrimes *cpp = cp; 23061558Srgrimes *endcpp = endcp; 23071558Srgrimes } 23081558Srgrimes return (0); 23091558Srgrimes } 23101558Srgrimes cpopt = cpoptend; 23111558Srgrimes } 23121558Srgrimes **endcpp = savedc; 23131558Srgrimes return (0); 23141558Srgrimes} 23151558Srgrimes 23161558Srgrimes/* 23171558Srgrimes * Translate a character string to the corresponding list of network 23181558Srgrimes * addresses for a hostname. 23191558Srgrimes */ 2320285128Straszstatic int 2321216587Scharnierget_host(char *cp, struct grouplist *grp, struct grouplist *tgrp) 23221558Srgrimes{ 23237401Swpaul struct grouplist *checkgrp; 232475635Siedowse struct addrinfo *ai, *tai, hints; 232574462Salfred int ecode; 232674462Salfred char host[NI_MAXHOST]; 23271558Srgrimes 232874462Salfred if (grp->gr_type != GT_NULL) { 232974462Salfred syslog(LOG_ERR, "Bad netgroup type for ip host %s", cp); 23301558Srgrimes return (1); 23311558Srgrimes } 233274462Salfred memset(&hints, 0, sizeof hints); 233374462Salfred hints.ai_flags = AI_CANONNAME; 233474462Salfred hints.ai_protocol = IPPROTO_UDP; 233574462Salfred ecode = getaddrinfo(cp, NULL, &hints, &ai); 233674462Salfred if (ecode != 0) { 233775635Siedowse syslog(LOG_ERR,"can't get address info for host %s", cp); 233874462Salfred return 1; 233974462Salfred } 234074462Salfred grp->gr_ptr.gt_addrinfo = ai; 234174462Salfred while (ai != NULL) { 234274462Salfred if (ai->ai_canonname == NULL) { 234374462Salfred if (getnameinfo(ai->ai_addr, ai->ai_addrlen, host, 2344146187Sume sizeof host, NULL, 0, NI_NUMERICHOST) != 0) 234574462Salfred strlcpy(host, "?", sizeof(host)); 234674462Salfred ai->ai_canonname = strdup(host); 234774462Salfred ai->ai_flags |= AI_CANONNAME; 234875641Siedowse } 234974462Salfred if (debug) 235075635Siedowse fprintf(stderr, "got host %s\n", ai->ai_canonname); 235175635Siedowse /* 235275635Siedowse * Sanity check: make sure we don't already have an entry 235375635Siedowse * for this host in the grouplist. 235475635Siedowse */ 235575635Siedowse for (checkgrp = tgrp; checkgrp != NULL; 235675635Siedowse checkgrp = checkgrp->gr_next) { 235775635Siedowse if (checkgrp->gr_type != GT_HOST) 235875635Siedowse continue; 235975635Siedowse for (tai = checkgrp->gr_ptr.gt_addrinfo; tai != NULL; 236075635Siedowse tai = tai->ai_next) { 236175801Siedowse if (sacmp(tai->ai_addr, ai->ai_addr, NULL) != 0) 236275635Siedowse continue; 236375635Siedowse if (debug) 236475635Siedowse fprintf(stderr, 236575635Siedowse "ignoring duplicate host %s\n", 236675635Siedowse ai->ai_canonname); 236775635Siedowse grp->gr_type = GT_IGNORE; 236875635Siedowse return (0); 236975635Siedowse } 237075635Siedowse } 237174462Salfred ai = ai->ai_next; 23721558Srgrimes } 237375635Siedowse grp->gr_type = GT_HOST; 23741558Srgrimes return (0); 23751558Srgrimes} 23761558Srgrimes 23771558Srgrimes/* 23781558Srgrimes * Free up an exports list component 23791558Srgrimes */ 2380285128Straszstatic void 2381216587Scharnierfree_exp(struct exportlist *ep) 23821558Srgrimes{ 23831558Srgrimes 23841558Srgrimes if (ep->ex_defdir) { 23851558Srgrimes free_host(ep->ex_defdir->dp_hosts); 23861558Srgrimes free((caddr_t)ep->ex_defdir); 23871558Srgrimes } 23881558Srgrimes if (ep->ex_fsdir) 23891558Srgrimes free(ep->ex_fsdir); 239027447Sdfr if (ep->ex_indexfile) 239127447Sdfr free(ep->ex_indexfile); 23921558Srgrimes free_dir(ep->ex_dirl); 23931558Srgrimes free((caddr_t)ep); 23941558Srgrimes} 23951558Srgrimes 23961558Srgrimes/* 23971558Srgrimes * Free hosts. 23981558Srgrimes */ 2399285128Straszstatic void 2400216587Scharnierfree_host(struct hostlist *hp) 24011558Srgrimes{ 24021558Srgrimes struct hostlist *hp2; 24031558Srgrimes 24041558Srgrimes while (hp) { 24051558Srgrimes hp2 = hp; 24061558Srgrimes hp = hp->ht_next; 24071558Srgrimes free((caddr_t)hp2); 24081558Srgrimes } 24091558Srgrimes} 24101558Srgrimes 2411285128Straszstatic struct hostlist * 2412216587Scharnierget_ht(void) 24131558Srgrimes{ 24141558Srgrimes struct hostlist *hp; 24151558Srgrimes 24161558Srgrimes hp = (struct hostlist *)malloc(sizeof (struct hostlist)); 24171558Srgrimes if (hp == (struct hostlist *)NULL) 24181558Srgrimes out_of_mem(); 24191558Srgrimes hp->ht_next = (struct hostlist *)NULL; 24209336Sdfr hp->ht_flag = 0; 24211558Srgrimes return (hp); 24221558Srgrimes} 24231558Srgrimes 24241558Srgrimes/* 24251558Srgrimes * Out of memory, fatal 24261558Srgrimes */ 2427285128Straszstatic void 2428216587Scharnierout_of_mem(void) 24291558Srgrimes{ 24301558Srgrimes 243137663Scharnier syslog(LOG_ERR, "out of memory"); 24321558Srgrimes exit(2); 24331558Srgrimes} 24341558Srgrimes 24351558Srgrimes/* 2436158857Srodrigc * Do the nmount() syscall with the update flag to push the export info into 24371558Srgrimes * the kernel. 24381558Srgrimes */ 2439285128Straszstatic int 2440158857Srodrigcdo_mount(struct exportlist *ep, struct grouplist *grp, int exflags, 2441158857Srodrigc struct xucred *anoncrp, char *dirp, int dirplen, struct statfs *fsb) 24421558Srgrimes{ 244375841Siedowse struct statfs fsb1; 244474462Salfred struct addrinfo *ai; 2445282214Strasz struct export_args *eap; 2446158857Srodrigc char errmsg[255]; 2447158857Srodrigc char *cp; 24481558Srgrimes int done; 2449158857Srodrigc char savedc; 2450158857Srodrigc struct iovec *iov; 2451184588Sdfr int i, iovlen; 2452158857Srodrigc int ret; 2453192934Srmacklem struct nfsex_args nfsea; 24541558Srgrimes 2455282214Strasz eap = &nfsea.export; 2456192934Srmacklem 2457158857Srodrigc cp = NULL; 2458158857Srodrigc savedc = '\0'; 2459158857Srodrigc iov = NULL; 2460158857Srodrigc iovlen = 0; 2461158857Srodrigc ret = 0; 246275801Siedowse 2463192934Srmacklem bzero(eap, sizeof (struct export_args)); 2464158857Srodrigc bzero(errmsg, sizeof(errmsg)); 2465192934Srmacklem eap->ex_flags = exflags; 2466192934Srmacklem eap->ex_anon = *anoncrp; 2467192934Srmacklem eap->ex_indexfile = ep->ex_indexfile; 246875641Siedowse if (grp->gr_type == GT_HOST) 246974462Salfred ai = grp->gr_ptr.gt_addrinfo; 247075641Siedowse else 247175641Siedowse ai = NULL; 2472192934Srmacklem eap->ex_numsecflavors = ep->ex_numsecflavors; 2473192934Srmacklem for (i = 0; i < eap->ex_numsecflavors; i++) 2474192934Srmacklem eap->ex_secflavors[i] = ep->ex_secflavors[i]; 2475192934Srmacklem if (eap->ex_numsecflavors == 0) { 2476192934Srmacklem eap->ex_numsecflavors = 1; 2477192934Srmacklem eap->ex_secflavors[0] = AUTH_SYS; 2478184588Sdfr } 24791558Srgrimes done = FALSE; 2480158857Srodrigc 2481192934Srmacklem if (v4root_phase == 0) { 2482192934Srmacklem build_iovec(&iov, &iovlen, "fstype", NULL, 0); 2483192934Srmacklem build_iovec(&iov, &iovlen, "fspath", NULL, 0); 2484192934Srmacklem build_iovec(&iov, &iovlen, "from", NULL, 0); 2485192934Srmacklem build_iovec(&iov, &iovlen, "update", NULL, 0); 2486192934Srmacklem build_iovec(&iov, &iovlen, "export", eap, 2487192934Srmacklem sizeof (struct export_args)); 2488192934Srmacklem build_iovec(&iov, &iovlen, "errmsg", errmsg, sizeof(errmsg)); 2489192934Srmacklem } 2490158857Srodrigc 24911558Srgrimes while (!done) { 24921558Srgrimes switch (grp->gr_type) { 24931558Srgrimes case GT_HOST: 249475641Siedowse if (ai->ai_addr->sa_family == AF_INET6 && have_v6 == 0) 249574462Salfred goto skip; 2496192934Srmacklem eap->ex_addr = ai->ai_addr; 2497192934Srmacklem eap->ex_addrlen = ai->ai_addrlen; 2498192934Srmacklem eap->ex_masklen = 0; 24991558Srgrimes break; 25001558Srgrimes case GT_NET: 250175801Siedowse if (grp->gr_ptr.gt_net.nt_net.ss_family == AF_INET6 && 250274462Salfred have_v6 == 0) 250374462Salfred goto skip; 2504192934Srmacklem eap->ex_addr = 250575801Siedowse (struct sockaddr *)&grp->gr_ptr.gt_net.nt_net; 2506192934Srmacklem eap->ex_addrlen = 2507158857Srodrigc ((struct sockaddr *)&grp->gr_ptr.gt_net.nt_net)->sa_len; 2508192934Srmacklem eap->ex_mask = 250975801Siedowse (struct sockaddr *)&grp->gr_ptr.gt_net.nt_mask; 2510192934Srmacklem eap->ex_masklen = ((struct sockaddr *)&grp->gr_ptr.gt_net.nt_mask)->sa_len; 25111558Srgrimes break; 251275641Siedowse case GT_DEFAULT: 2513192934Srmacklem eap->ex_addr = NULL; 2514192934Srmacklem eap->ex_addrlen = 0; 2515192934Srmacklem eap->ex_mask = NULL; 2516192934Srmacklem eap->ex_masklen = 0; 251775641Siedowse break; 25187401Swpaul case GT_IGNORE: 2519158857Srodrigc ret = 0; 2520158857Srodrigc goto error_exit; 25217401Swpaul break; 25221558Srgrimes default: 252337663Scharnier syslog(LOG_ERR, "bad grouptype"); 25241558Srgrimes if (cp) 25251558Srgrimes *cp = savedc; 2526158857Srodrigc ret = 1; 2527158857Srodrigc goto error_exit; 2528298089Spfg } 25291558Srgrimes 25301558Srgrimes /* 2531192934Srmacklem * For V4:, use the nfssvc() syscall, instead of mount(). 25321558Srgrimes */ 2533192934Srmacklem if (v4root_phase == 2) { 2534192934Srmacklem nfsea.fspec = v4root_dirpath; 2535282214Strasz if (nfssvc(NFSSVC_V4ROOTEXPORT, (caddr_t)&nfsea) < 0) { 2536192934Srmacklem syslog(LOG_ERR, "Exporting V4: failed"); 2537192934Srmacklem return (2); 2538158857Srodrigc } 2539192934Srmacklem } else { 2540192934Srmacklem /* 2541192934Srmacklem * XXX: 2542192934Srmacklem * Maybe I should just use the fsb->f_mntonname path 2543192934Srmacklem * instead of looping back up the dirp to the mount 2544192934Srmacklem * point?? 2545192934Srmacklem * Also, needs to know how to export all types of local 2546192934Srmacklem * exportable filesystems and not just "ufs". 2547192934Srmacklem */ 2548192934Srmacklem iov[1].iov_base = fsb->f_fstypename; /* "fstype" */ 2549192934Srmacklem iov[1].iov_len = strlen(fsb->f_fstypename) + 1; 2550192934Srmacklem iov[3].iov_base = fsb->f_mntonname; /* "fspath" */ 2551192934Srmacklem iov[3].iov_len = strlen(fsb->f_mntonname) + 1; 2552192934Srmacklem iov[5].iov_base = fsb->f_mntfromname; /* "from" */ 2553192934Srmacklem iov[5].iov_len = strlen(fsb->f_mntfromname) + 1; 2554270183Sbdrewery errmsg[0] = '\0'; 2555192934Srmacklem 2556192934Srmacklem while (nmount(iov, iovlen, fsb->f_flags) < 0) { 2557192934Srmacklem if (cp) 2558192934Srmacklem *cp-- = savedc; 2559192934Srmacklem else 2560192934Srmacklem cp = dirp + dirplen - 1; 2561192934Srmacklem if (opt_flags & OP_QUIET) { 2562192934Srmacklem ret = 1; 2563192934Srmacklem goto error_exit; 2564192934Srmacklem } 2565192934Srmacklem if (errno == EPERM) { 2566192934Srmacklem if (debug) 2567239744Sdelphij warnx("can't change attributes for %s: %s", 2568239744Sdelphij dirp, errmsg); 2569192934Srmacklem syslog(LOG_ERR, 2570239744Sdelphij "can't change attributes for %s: %s", 2571239744Sdelphij dirp, errmsg); 2572192934Srmacklem ret = 1; 2573192934Srmacklem goto error_exit; 2574192934Srmacklem } 2575192934Srmacklem if (opt_flags & OP_ALLDIRS) { 2576192934Srmacklem if (errno == EINVAL) 2577192934Srmacklem syslog(LOG_ERR, 2578100336Sjoerg "-alldirs requested but %s is not a filesystem mountpoint", 2579192934Srmacklem dirp); 2580192934Srmacklem else 2581192934Srmacklem syslog(LOG_ERR, 2582192934Srmacklem "could not remount %s: %m", 2583192934Srmacklem dirp); 2584192934Srmacklem ret = 1; 2585192934Srmacklem goto error_exit; 2586192934Srmacklem } 2587192934Srmacklem /* back up over the last component */ 2588192934Srmacklem while (*cp == '/' && cp > dirp) 2589192934Srmacklem cp--; 2590192934Srmacklem while (*(cp - 1) != '/' && cp > dirp) 2591192934Srmacklem cp--; 2592192934Srmacklem if (cp == dirp) { 2593192934Srmacklem if (debug) 2594192934Srmacklem warnx("mnt unsucc"); 2595192934Srmacklem syslog(LOG_ERR, "can't export %s %s", 2596192934Srmacklem dirp, errmsg); 2597192934Srmacklem ret = 1; 2598192934Srmacklem goto error_exit; 2599192934Srmacklem } 2600192934Srmacklem savedc = *cp; 2601192934Srmacklem *cp = '\0'; 2602192934Srmacklem /* 2603192934Srmacklem * Check that we're still on the same 2604192934Srmacklem * filesystem. 2605192934Srmacklem */ 2606192934Srmacklem if (statfs(dirp, &fsb1) != 0 || 2607192934Srmacklem bcmp(&fsb1.f_fsid, &fsb->f_fsid, 2608192934Srmacklem sizeof (fsb1.f_fsid)) != 0) { 2609192934Srmacklem *cp = savedc; 2610100336Sjoerg syslog(LOG_ERR, 2611192934Srmacklem "can't export %s %s", dirp, 2612192934Srmacklem errmsg); 2613192934Srmacklem ret = 1; 2614192934Srmacklem goto error_exit; 2615192934Srmacklem } 26161558Srgrimes } 26171558Srgrimes } 2618192934Srmacklem 2619192934Srmacklem /* 2620192934Srmacklem * For the experimental server: 2621192934Srmacklem * If this is the public directory, get the file handle 2622192934Srmacklem * and load it into the kernel via the nfssvc() syscall. 2623192934Srmacklem */ 2624282214Strasz if ((exflags & MNT_EXPUBLIC) != 0) { 2625192934Srmacklem fhandle_t fh; 2626192934Srmacklem char *public_name; 2627192934Srmacklem 2628192934Srmacklem if (eap->ex_indexfile != NULL) 2629192934Srmacklem public_name = eap->ex_indexfile; 2630192934Srmacklem else 2631192934Srmacklem public_name = dirp; 2632192934Srmacklem if (getfh(public_name, &fh) < 0) 2633192934Srmacklem syslog(LOG_ERR, 2634192934Srmacklem "Can't get public fh for %s", public_name); 2635192934Srmacklem else if (nfssvc(NFSSVC_PUBLICFH, (caddr_t)&fh) < 0) 2636192934Srmacklem syslog(LOG_ERR, 2637192934Srmacklem "Can't set public fh for %s", public_name); 2638192934Srmacklem else 2639192934Srmacklem has_publicfh = 1; 2640192934Srmacklem } 264174462Salfredskip: 264275641Siedowse if (ai != NULL) 264374462Salfred ai = ai->ai_next; 264475641Siedowse if (ai == NULL) 26451558Srgrimes done = TRUE; 26461558Srgrimes } 26471558Srgrimes if (cp) 26481558Srgrimes *cp = savedc; 2649158857Srodrigcerror_exit: 2650158857Srodrigc /* free strings allocated by strdup() in getmntopts.c */ 2651158857Srodrigc if (iov != NULL) { 2652158857Srodrigc free(iov[0].iov_base); /* fstype */ 2653158857Srodrigc free(iov[2].iov_base); /* fspath */ 2654158857Srodrigc free(iov[4].iov_base); /* from */ 2655158857Srodrigc free(iov[6].iov_base); /* update */ 2656158857Srodrigc free(iov[8].iov_base); /* export */ 2657158857Srodrigc free(iov[10].iov_base); /* errmsg */ 2658158857Srodrigc 2659158857Srodrigc /* free iov, allocated by realloc() */ 2660158857Srodrigc free(iov); 2661158857Srodrigc } 2662158857Srodrigc return (ret); 26631558Srgrimes} 26641558Srgrimes 26651558Srgrimes/* 26661558Srgrimes * Translate a net address. 266775801Siedowse * 266875801Siedowse * If `maskflg' is nonzero, then `cp' is a netmask, not a network address. 26691558Srgrimes */ 2670285128Straszstatic int 2671216587Scharnierget_net(char *cp, struct netmsk *net, int maskflg) 26721558Srgrimes{ 267375861Siedowse struct netent *np = NULL; 267474462Salfred char *name, *p, *prefp; 267575801Siedowse struct sockaddr_in sin; 267675861Siedowse struct sockaddr *sa = NULL; 267774462Salfred struct addrinfo hints, *ai = NULL; 267874462Salfred char netname[NI_MAXHOST]; 267974462Salfred long preflen; 26801558Srgrimes 268175635Siedowse p = prefp = NULL; 268274462Salfred if ((opt_flags & OP_MASKLEN) && !maskflg) { 268374462Salfred p = strchr(cp, '/'); 268474462Salfred *p = '\0'; 268574462Salfred prefp = p + 1; 268674462Salfred } 268774462Salfred 268875861Siedowse /* 268975861Siedowse * Check for a numeric address first. We wish to avoid 269075861Siedowse * possible DNS lookups in getnetbyname(). 269175861Siedowse */ 269275861Siedowse if (isxdigit(*cp) || *cp == ':') { 269374462Salfred memset(&hints, 0, sizeof hints); 269475801Siedowse /* Ensure the mask and the network have the same family. */ 269575801Siedowse if (maskflg && (opt_flags & OP_NET)) 269675801Siedowse hints.ai_family = net->nt_net.ss_family; 269775801Siedowse else if (!maskflg && (opt_flags & OP_HAVEMASK)) 269875801Siedowse hints.ai_family = net->nt_mask.ss_family; 269975801Siedowse else 270075801Siedowse hints.ai_family = AF_UNSPEC; 270174462Salfred hints.ai_flags = AI_NUMERICHOST; 270275861Siedowse if (getaddrinfo(cp, NULL, &hints, &ai) == 0) 270375861Siedowse sa = ai->ai_addr; 270475861Siedowse if (sa != NULL && ai->ai_family == AF_INET) { 270574462Salfred /* 270675801Siedowse * The address in `cp' is really a network address, so 270775801Siedowse * use inet_network() to re-interpret this correctly. 270875801Siedowse * e.g. "127.1" means 127.1.0.0, not 127.0.0.1. 270974462Salfred */ 271075801Siedowse bzero(&sin, sizeof sin); 271174462Salfred sin.sin_family = AF_INET; 271274462Salfred sin.sin_len = sizeof sin; 271375801Siedowse sin.sin_addr = inet_makeaddr(inet_network(cp), 0); 271474462Salfred if (debug) 271575801Siedowse fprintf(stderr, "get_net: v4 addr %s\n", 271675801Siedowse inet_ntoa(sin.sin_addr)); 271774462Salfred sa = (struct sockaddr *)&sin; 271875861Siedowse } 271975861Siedowse } 272075861Siedowse if (sa == NULL && (np = getnetbyname(cp)) != NULL) { 272175861Siedowse bzero(&sin, sizeof sin); 272275861Siedowse sin.sin_family = AF_INET; 272375861Siedowse sin.sin_len = sizeof sin; 272475861Siedowse sin.sin_addr = inet_makeaddr(np->n_net, 0); 272575861Siedowse sa = (struct sockaddr *)&sin; 272675861Siedowse } 272775861Siedowse if (sa == NULL) 272874462Salfred goto fail; 272925318Spst 273075801Siedowse if (maskflg) { 273175801Siedowse /* The specified sockaddr is a mask. */ 273275801Siedowse if (checkmask(sa) != 0) 273375801Siedowse goto fail; 273475801Siedowse bcopy(sa, &net->nt_mask, sa->sa_len); 273575801Siedowse opt_flags |= OP_HAVEMASK; 273675801Siedowse } else { 273775801Siedowse /* The specified sockaddr is a network address. */ 273875801Siedowse bcopy(sa, &net->nt_net, sa->sa_len); 273974462Salfred 274075801Siedowse /* Get a network name for the export list. */ 274175801Siedowse if (np) { 274275801Siedowse name = np->n_name; 274375801Siedowse } else if (getnameinfo(sa, sa->sa_len, netname, sizeof netname, 2744146187Sume NULL, 0, NI_NUMERICHOST) == 0) { 274575801Siedowse name = netname; 274675801Siedowse } else { 274775801Siedowse goto fail; 274875801Siedowse } 274975801Siedowse if ((net->nt_name = strdup(name)) == NULL) 275075801Siedowse out_of_mem(); 275175801Siedowse 275275801Siedowse /* 275375801Siedowse * Extract a mask from either a "/<masklen>" suffix, or 275475801Siedowse * from the class of an IPv4 address. 275575801Siedowse */ 275674462Salfred if (opt_flags & OP_MASKLEN) { 275774462Salfred preflen = strtol(prefp, NULL, 10); 275875801Siedowse if (preflen < 0L || preflen == LONG_MAX) 275974462Salfred goto fail; 276075801Siedowse bcopy(sa, &net->nt_mask, sa->sa_len); 276175801Siedowse if (makemask(&net->nt_mask, (int)preflen) != 0) 276275801Siedowse goto fail; 276375801Siedowse opt_flags |= OP_HAVEMASK; 276474462Salfred *p = '/'; 276575801Siedowse } else if (sa->sa_family == AF_INET && 276675801Siedowse (opt_flags & OP_MASK) == 0) { 276775801Siedowse in_addr_t addr; 276874462Salfred 276975801Siedowse addr = ((struct sockaddr_in *)sa)->sin_addr.s_addr; 277075801Siedowse if (IN_CLASSA(addr)) 277175801Siedowse preflen = 8; 277275801Siedowse else if (IN_CLASSB(addr)) 277375801Siedowse preflen = 16; 277475801Siedowse else if (IN_CLASSC(addr)) 277575801Siedowse preflen = 24; 277675801Siedowse else if (IN_CLASSD(addr)) 277775801Siedowse preflen = 28; 277875801Siedowse else 277975801Siedowse preflen = 32; /* XXX */ 278075801Siedowse 278175801Siedowse bcopy(sa, &net->nt_mask, sa->sa_len); 278275801Siedowse makemask(&net->nt_mask, (int)preflen); 278375801Siedowse opt_flags |= OP_HAVEMASK; 278474462Salfred } 278574462Salfred } 278674462Salfred 278774462Salfred if (ai) 278874462Salfred freeaddrinfo(ai); 278974462Salfred return 0; 279074462Salfred 279174462Salfredfail: 279274462Salfred if (ai) 279374462Salfred freeaddrinfo(ai); 279474462Salfred return 1; 27951558Srgrimes} 27961558Srgrimes 27971558Srgrimes/* 27981558Srgrimes * Parse out the next white space separated field 27991558Srgrimes */ 2800285128Straszstatic void 2801216587Scharniernextfield(char **cp, char **endcp) 28021558Srgrimes{ 28031558Srgrimes char *p; 28041558Srgrimes 28051558Srgrimes p = *cp; 28061558Srgrimes while (*p == ' ' || *p == '\t') 28071558Srgrimes p++; 28081558Srgrimes if (*p == '\n' || *p == '\0') 28091558Srgrimes *cp = *endcp = p; 28101558Srgrimes else { 28111558Srgrimes *cp = p++; 28121558Srgrimes while (*p != ' ' && *p != '\t' && *p != '\n' && *p != '\0') 28131558Srgrimes p++; 28141558Srgrimes *endcp = p; 28151558Srgrimes } 28161558Srgrimes} 28171558Srgrimes 28181558Srgrimes/* 28191558Srgrimes * Get an exports file line. Skip over blank lines and handle line 28201558Srgrimes * continuations. 28211558Srgrimes */ 2822285128Straszstatic int 2823216587Scharnierget_line(void) 28241558Srgrimes{ 28251558Srgrimes char *p, *cp; 282696622Siedowse size_t len; 28271558Srgrimes int totlen, cont_line; 28281558Srgrimes 28291558Srgrimes /* 28301558Srgrimes * Loop around ignoring blank lines and getting all continuation lines. 28311558Srgrimes */ 28321558Srgrimes p = line; 28331558Srgrimes totlen = 0; 28341558Srgrimes do { 283596622Siedowse if ((p = fgetln(exp_file, &len)) == NULL) 28361558Srgrimes return (0); 28371558Srgrimes cp = p + len - 1; 28381558Srgrimes cont_line = 0; 28391558Srgrimes while (cp >= p && 28401558Srgrimes (*cp == ' ' || *cp == '\t' || *cp == '\n' || *cp == '\\')) { 28411558Srgrimes if (*cp == '\\') 28421558Srgrimes cont_line = 1; 28431558Srgrimes cp--; 28441558Srgrimes len--; 28451558Srgrimes } 284679117Sdd if (cont_line) { 284779117Sdd *++cp = ' '; 284879117Sdd len++; 284979117Sdd } 285096622Siedowse if (linesize < len + totlen + 1) { 285196622Siedowse linesize = len + totlen + 1; 285296622Siedowse line = realloc(line, linesize); 285396622Siedowse if (line == NULL) 285496622Siedowse out_of_mem(); 28551558Srgrimes } 285696622Siedowse memcpy(line + totlen, p, len); 285796622Siedowse totlen += len; 285896622Siedowse line[totlen] = '\0'; 28591558Srgrimes } while (totlen == 0 || cont_line); 28601558Srgrimes return (1); 28611558Srgrimes} 28621558Srgrimes 28631558Srgrimes/* 28641558Srgrimes * Parse a description of a credential. 28651558Srgrimes */ 2866285128Straszstatic void 2867216587Scharnierparsecred(char *namelist, struct xucred *cr) 28681558Srgrimes{ 28691558Srgrimes char *name; 28701558Srgrimes int cnt; 28711558Srgrimes char *names; 28721558Srgrimes struct passwd *pw; 28731558Srgrimes struct group *gr; 2874194498Sbrooks gid_t groups[XU_NGROUPS + 1]; 2875136051Sstefanf int ngroups; 28761558Srgrimes 287791354Sdd cr->cr_version = XUCRED_VERSION; 28781558Srgrimes /* 287937663Scharnier * Set up the unprivileged user. 28801558Srgrimes */ 28811558Srgrimes cr->cr_uid = -2; 28821558Srgrimes cr->cr_groups[0] = -2; 28831558Srgrimes cr->cr_ngroups = 1; 28841558Srgrimes /* 28851558Srgrimes * Get the user's password table entry. 28861558Srgrimes */ 2887293305Sjpaetzel names = strsep_quote(&namelist, " \t\n"); 28881558Srgrimes name = strsep(&names, ":"); 2889293305Sjpaetzel /* Bug? name could be NULL here */ 28901558Srgrimes if (isdigit(*name) || *name == '-') 28911558Srgrimes pw = getpwuid(atoi(name)); 28921558Srgrimes else 28931558Srgrimes pw = getpwnam(name); 28941558Srgrimes /* 28951558Srgrimes * Credentials specified as those of a user. 28961558Srgrimes */ 28971558Srgrimes if (names == NULL) { 28981558Srgrimes if (pw == NULL) { 289937663Scharnier syslog(LOG_ERR, "unknown user: %s", name); 29001558Srgrimes return; 29011558Srgrimes } 29021558Srgrimes cr->cr_uid = pw->pw_uid; 2903194498Sbrooks ngroups = XU_NGROUPS + 1; 29041558Srgrimes if (getgrouplist(pw->pw_name, pw->pw_gid, groups, &ngroups)) 290537663Scharnier syslog(LOG_ERR, "too many groups"); 29061558Srgrimes /* 2907136051Sstefanf * Compress out duplicate. 29081558Srgrimes */ 29091558Srgrimes cr->cr_ngroups = ngroups - 1; 29101558Srgrimes cr->cr_groups[0] = groups[0]; 29111558Srgrimes for (cnt = 2; cnt < ngroups; cnt++) 29121558Srgrimes cr->cr_groups[cnt - 1] = groups[cnt]; 29131558Srgrimes return; 29141558Srgrimes } 29151558Srgrimes /* 29161558Srgrimes * Explicit credential specified as a colon separated list: 29171558Srgrimes * uid:gid:gid:... 29181558Srgrimes */ 29191558Srgrimes if (pw != NULL) 29201558Srgrimes cr->cr_uid = pw->pw_uid; 29211558Srgrimes else if (isdigit(*name) || *name == '-') 29221558Srgrimes cr->cr_uid = atoi(name); 29231558Srgrimes else { 292437663Scharnier syslog(LOG_ERR, "unknown user: %s", name); 29251558Srgrimes return; 29261558Srgrimes } 29271558Srgrimes cr->cr_ngroups = 0; 2928194498Sbrooks while (names != NULL && *names != '\0' && cr->cr_ngroups < XU_NGROUPS) { 29291558Srgrimes name = strsep(&names, ":"); 29301558Srgrimes if (isdigit(*name) || *name == '-') { 29311558Srgrimes cr->cr_groups[cr->cr_ngroups++] = atoi(name); 29321558Srgrimes } else { 29331558Srgrimes if ((gr = getgrnam(name)) == NULL) { 293437663Scharnier syslog(LOG_ERR, "unknown group: %s", name); 29351558Srgrimes continue; 29361558Srgrimes } 29371558Srgrimes cr->cr_groups[cr->cr_ngroups++] = gr->gr_gid; 29381558Srgrimes } 29391558Srgrimes } 2940194498Sbrooks if (names != NULL && *names != '\0' && cr->cr_ngroups == XU_NGROUPS) 294137663Scharnier syslog(LOG_ERR, "too many groups"); 29421558Srgrimes} 29431558Srgrimes 2944194880Sdfr#define STRSIZ (MNTNAMLEN+MNTPATHLEN+50) 29451558Srgrimes/* 29461558Srgrimes * Routines that maintain the remote mounttab 29471558Srgrimes */ 2948285128Straszstatic void 2949216587Scharnierget_mountlist(void) 29501558Srgrimes{ 2951324955Smanu struct mountlist *mlp; 295223681Speter char *host, *dirp, *cp; 29531558Srgrimes char str[STRSIZ]; 29541558Srgrimes FILE *mlfile; 29551558Srgrimes 29561558Srgrimes if ((mlfile = fopen(_PATH_RMOUNTLIST, "r")) == NULL) { 295753117Sbillf if (errno == ENOENT) 295853117Sbillf return; 295953117Sbillf else { 296053117Sbillf syslog(LOG_ERR, "can't open %s", _PATH_RMOUNTLIST); 296153117Sbillf return; 296253117Sbillf } 29631558Srgrimes } 29641558Srgrimes while (fgets(str, STRSIZ, mlfile) != NULL) { 296523681Speter cp = str; 296623681Speter host = strsep(&cp, " \t\n"); 296723681Speter dirp = strsep(&cp, " \t\n"); 296823681Speter if (host == NULL || dirp == NULL) 29691558Srgrimes continue; 29701558Srgrimes mlp = (struct mountlist *)malloc(sizeof (*mlp)); 297137663Scharnier if (mlp == (struct mountlist *)NULL) 297237663Scharnier out_of_mem(); 2973194880Sdfr strncpy(mlp->ml_host, host, MNTNAMLEN); 2974194880Sdfr mlp->ml_host[MNTNAMLEN] = '\0'; 2975194880Sdfr strncpy(mlp->ml_dirp, dirp, MNTPATHLEN); 2976194880Sdfr mlp->ml_dirp[MNTPATHLEN] = '\0'; 2977324955Smanu 2978324955Smanu SLIST_INSERT_HEAD(&mlhead, mlp, next); 29791558Srgrimes } 29801558Srgrimes fclose(mlfile); 29811558Srgrimes} 29821558Srgrimes 2983285128Straszstatic void 298475635Siedowsedel_mlist(char *hostp, char *dirp) 29851558Srgrimes{ 2986324955Smanu struct mountlist *mlp, *mlp2; 29871558Srgrimes FILE *mlfile; 29881558Srgrimes int fnd = 0; 29891558Srgrimes 2990324955Smanu SLIST_FOREACH_SAFE(mlp, &mlhead, next, mlp2) { 29911558Srgrimes if (!strcmp(mlp->ml_host, hostp) && 29921558Srgrimes (!dirp || !strcmp(mlp->ml_dirp, dirp))) { 29931558Srgrimes fnd = 1; 2994324955Smanu SLIST_REMOVE(&mlhead, mlp, mountlist, next); 2995324955Smanu free((caddr_t)mlp); 29961558Srgrimes } 29971558Srgrimes } 29981558Srgrimes if (fnd) { 29991558Srgrimes if ((mlfile = fopen(_PATH_RMOUNTLIST, "w")) == NULL) { 300037663Scharnier syslog(LOG_ERR,"can't update %s", _PATH_RMOUNTLIST); 30011558Srgrimes return; 30021558Srgrimes } 3003324955Smanu SLIST_FOREACH(mlp, &mlhead, next) { 30041558Srgrimes fprintf(mlfile, "%s %s\n", mlp->ml_host, mlp->ml_dirp); 30051558Srgrimes } 30061558Srgrimes fclose(mlfile); 30071558Srgrimes } 30081558Srgrimes} 30091558Srgrimes 3010285128Straszstatic void 3011216587Scharnieradd_mlist(char *hostp, char *dirp) 30121558Srgrimes{ 3013324955Smanu struct mountlist *mlp; 30141558Srgrimes FILE *mlfile; 30151558Srgrimes 3016324955Smanu SLIST_FOREACH(mlp, &mlhead, next) { 30171558Srgrimes if (!strcmp(mlp->ml_host, hostp) && !strcmp(mlp->ml_dirp, dirp)) 30181558Srgrimes return; 30191558Srgrimes } 3020324955Smanu 30211558Srgrimes mlp = (struct mountlist *)malloc(sizeof (*mlp)); 302237663Scharnier if (mlp == (struct mountlist *)NULL) 302337663Scharnier out_of_mem(); 3024194880Sdfr strncpy(mlp->ml_host, hostp, MNTNAMLEN); 3025194880Sdfr mlp->ml_host[MNTNAMLEN] = '\0'; 3026194880Sdfr strncpy(mlp->ml_dirp, dirp, MNTPATHLEN); 3027194880Sdfr mlp->ml_dirp[MNTPATHLEN] = '\0'; 3028324955Smanu SLIST_INSERT_HEAD(&mlhead, mlp, next); 30291558Srgrimes if ((mlfile = fopen(_PATH_RMOUNTLIST, "a")) == NULL) { 303037663Scharnier syslog(LOG_ERR, "can't update %s", _PATH_RMOUNTLIST); 30311558Srgrimes return; 30321558Srgrimes } 30331558Srgrimes fprintf(mlfile, "%s %s\n", mlp->ml_host, mlp->ml_dirp); 30341558Srgrimes fclose(mlfile); 30351558Srgrimes} 30361558Srgrimes 30371558Srgrimes/* 30381558Srgrimes * Free up a group list. 30391558Srgrimes */ 3040285128Straszstatic void 3041216587Scharnierfree_grp(struct grouplist *grp) 30421558Srgrimes{ 30431558Srgrimes if (grp->gr_type == GT_HOST) { 304474462Salfred if (grp->gr_ptr.gt_addrinfo != NULL) 304574462Salfred freeaddrinfo(grp->gr_ptr.gt_addrinfo); 30461558Srgrimes } else if (grp->gr_type == GT_NET) { 30471558Srgrimes if (grp->gr_ptr.gt_net.nt_name) 30481558Srgrimes free(grp->gr_ptr.gt_net.nt_name); 30491558Srgrimes } 30501558Srgrimes free((caddr_t)grp); 30511558Srgrimes} 30521558Srgrimes 30531558Srgrimes#ifdef DEBUG 3054285128Straszstatic void 30551558SrgrimesSYSLOG(int pri, const char *fmt, ...) 30561558Srgrimes{ 30571558Srgrimes va_list ap; 30581558Srgrimes 30591558Srgrimes va_start(ap, fmt); 30601558Srgrimes vfprintf(stderr, fmt, ap); 30611558Srgrimes va_end(ap); 30621558Srgrimes} 30631558Srgrimes#endif /* DEBUG */ 30641558Srgrimes 30651558Srgrimes/* 30661558Srgrimes * Check options for consistency. 30671558Srgrimes */ 3068285128Straszstatic int 3069216587Scharniercheck_options(struct dirlist *dp) 30701558Srgrimes{ 30711558Srgrimes 3072192934Srmacklem if (v4root_phase == 0 && dp == NULL) 30731558Srgrimes return (1); 307483653Speter if ((opt_flags & (OP_MAPROOT | OP_MAPALL)) == (OP_MAPROOT | OP_MAPALL)) { 307583653Speter syslog(LOG_ERR, "-mapall and -maproot mutually exclusive"); 30761558Srgrimes return (1); 30771558Srgrimes } 30781558Srgrimes if ((opt_flags & OP_MASK) && (opt_flags & OP_NET) == 0) { 307975801Siedowse syslog(LOG_ERR, "-mask requires -network"); 308075801Siedowse return (1); 30811558Srgrimes } 308275801Siedowse if ((opt_flags & OP_NET) && (opt_flags & OP_HAVEMASK) == 0) { 308375801Siedowse syslog(LOG_ERR, "-network requires mask specification"); 308475801Siedowse return (1); 308575801Siedowse } 308675801Siedowse if ((opt_flags & OP_MASK) && (opt_flags & OP_MASKLEN)) { 308775801Siedowse syslog(LOG_ERR, "-mask and /masklen are mutually exclusive"); 308875801Siedowse return (1); 308975801Siedowse } 3090192934Srmacklem if (v4root_phase > 0 && 3091192934Srmacklem (opt_flags & 3092192934Srmacklem ~(OP_SEC | OP_MASK | OP_NET | OP_HAVEMASK | OP_MASKLEN)) != 0) { 3093192934Srmacklem syslog(LOG_ERR,"only -sec,-net,-mask options allowed on V4:"); 3094192934Srmacklem return (1); 3095192934Srmacklem } 3096207689Srmacklem if ((opt_flags & OP_ALLDIRS) && dp->dp_left) { 3097207689Srmacklem syslog(LOG_ERR, "-alldirs has multiple directories"); 3098207689Srmacklem return (1); 3099207689Srmacklem } 31001558Srgrimes return (0); 31011558Srgrimes} 31021558Srgrimes 31031558Srgrimes/* 31041558Srgrimes * Check an absolute directory path for any symbolic links. Return true 31051558Srgrimes */ 3106285128Straszstatic int 3107216587Scharniercheck_dirpath(char *dirp) 31081558Srgrimes{ 31091558Srgrimes char *cp; 31101558Srgrimes int ret = 1; 31111558Srgrimes struct stat sb; 31121558Srgrimes 31131558Srgrimes cp = dirp + 1; 31141558Srgrimes while (*cp && ret) { 31151558Srgrimes if (*cp == '/') { 31161558Srgrimes *cp = '\0'; 31179336Sdfr if (lstat(dirp, &sb) < 0 || !S_ISDIR(sb.st_mode)) 31181558Srgrimes ret = 0; 31191558Srgrimes *cp = '/'; 31201558Srgrimes } 31211558Srgrimes cp++; 31221558Srgrimes } 31239336Sdfr if (lstat(dirp, &sb) < 0 || !S_ISDIR(sb.st_mode)) 31241558Srgrimes ret = 0; 31251558Srgrimes return (ret); 31261558Srgrimes} 31279336Sdfr 312875801Siedowse/* 312975801Siedowse * Make a netmask according to the specified prefix length. The ss_family 313075801Siedowse * and other non-address fields must be initialised before calling this. 313175801Siedowse */ 3132285128Straszstatic int 313375801Siedowsemakemask(struct sockaddr_storage *ssp, int bitlen) 313474462Salfred{ 313575801Siedowse u_char *p; 313675801Siedowse int bits, i, len; 313774462Salfred 313875801Siedowse if ((p = sa_rawaddr((struct sockaddr *)ssp, &len)) == NULL) 313975801Siedowse return (-1); 3140103949Smike if (bitlen > len * CHAR_BIT) 314175801Siedowse return (-1); 314274462Salfred 314375801Siedowse for (i = 0; i < len; i++) { 3144298912Saraujo bits = MIN(CHAR_BIT, bitlen); 3145219125Sru *p++ = (u_char)~0 << (CHAR_BIT - bits); 314675801Siedowse bitlen -= bits; 314774462Salfred } 314875801Siedowse return 0; 314974462Salfred} 315074462Salfred 315175801Siedowse/* 315275801Siedowse * Check that the sockaddr is a valid netmask. Returns 0 if the mask 315375801Siedowse * is acceptable (i.e. of the form 1...10....0). 315475801Siedowse */ 3155285128Straszstatic int 315675801Siedowsecheckmask(struct sockaddr *sa) 315774462Salfred{ 315875801Siedowse u_char *mask; 315975801Siedowse int i, len; 316074462Salfred 316175801Siedowse if ((mask = sa_rawaddr(sa, &len)) == NULL) 316275801Siedowse return (-1); 316375801Siedowse 316475801Siedowse for (i = 0; i < len; i++) 316575801Siedowse if (mask[i] != 0xff) 316675801Siedowse break; 316775801Siedowse if (i < len) { 316875801Siedowse if (~mask[i] & (u_char)(~mask[i] + 1)) 316975801Siedowse return (-1); 317075801Siedowse i++; 317174462Salfred } 317275801Siedowse for (; i < len; i++) 317375801Siedowse if (mask[i] != 0) 317475801Siedowse return (-1); 317575801Siedowse return (0); 317674462Salfred} 317774462Salfred 317875801Siedowse/* 317975801Siedowse * Compare two sockaddrs according to a specified mask. Return zero if 318075801Siedowse * `sa1' matches `sa2' when filtered by the netmask in `samask'. 3181228990Suqs * If samask is NULL, perform a full comparison. 318275801Siedowse */ 3183285128Straszstatic int 318475801Siedowsesacmp(struct sockaddr *sa1, struct sockaddr *sa2, struct sockaddr *samask) 318574462Salfred{ 318675801Siedowse unsigned char *p1, *p2, *mask; 318775801Siedowse int len, i; 318874462Salfred 318975801Siedowse if (sa1->sa_family != sa2->sa_family || 319075801Siedowse (p1 = sa_rawaddr(sa1, &len)) == NULL || 319175801Siedowse (p2 = sa_rawaddr(sa2, NULL)) == NULL) 319275801Siedowse return (1); 319375801Siedowse 319475801Siedowse switch (sa1->sa_family) { 319574462Salfred case AF_INET6: 319675801Siedowse if (((struct sockaddr_in6 *)sa1)->sin6_scope_id != 319775801Siedowse ((struct sockaddr_in6 *)sa2)->sin6_scope_id) 319875801Siedowse return (1); 319974462Salfred break; 320074462Salfred } 320174462Salfred 320275801Siedowse /* Simple binary comparison if no mask specified. */ 320375801Siedowse if (samask == NULL) 320475801Siedowse return (memcmp(p1, p2, len)); 320574462Salfred 320675801Siedowse /* Set up the mask, and do a mask-based comparison. */ 320775801Siedowse if (sa1->sa_family != samask->sa_family || 320875801Siedowse (mask = sa_rawaddr(samask, NULL)) == NULL) 320975801Siedowse return (1); 321074462Salfred 321175801Siedowse for (i = 0; i < len; i++) 321275801Siedowse if ((p1[i] & mask[i]) != (p2[i] & mask[i])) 321375801Siedowse return (1); 321475801Siedowse return (0); 321574462Salfred} 321674462Salfred 321775801Siedowse/* 321875801Siedowse * Return a pointer to the part of the sockaddr that contains the 321975801Siedowse * raw address, and set *nbytes to its length in bytes. Returns 322075801Siedowse * NULL if the address family is unknown. 322175801Siedowse */ 3222285128Straszstatic void * 322375801Siedowsesa_rawaddr(struct sockaddr *sa, int *nbytes) { 322475801Siedowse void *p; 322574462Salfred int len; 322674462Salfred 322775801Siedowse switch (sa->sa_family) { 322874462Salfred case AF_INET: 322975801Siedowse len = sizeof(((struct sockaddr_in *)sa)->sin_addr); 323075801Siedowse p = &((struct sockaddr_in *)sa)->sin_addr; 323174462Salfred break; 323274462Salfred case AF_INET6: 323375801Siedowse len = sizeof(((struct sockaddr_in6 *)sa)->sin6_addr); 323475801Siedowse p = &((struct sockaddr_in6 *)sa)->sin6_addr; 323574462Salfred break; 323674462Salfred default: 323775801Siedowse p = NULL; 323875801Siedowse len = 0; 323974462Salfred } 324074462Salfred 324175801Siedowse if (nbytes != NULL) 324275801Siedowse *nbytes = len; 324375801Siedowse return (p); 324474462Salfred} 324574462Salfred 3246285128Straszstatic void 3247216587Scharnierhuphandler(int sig __unused) 324875754Siedowse{ 3249285128Strasz 325075754Siedowse got_sighup = 1; 325175754Siedowse} 325275754Siedowse 3253285128Straszstatic void 3254285128Straszterminate(int sig __unused) 325574462Salfred{ 3256149433Spjd pidfile_remove(pfh); 3257194880Sdfr rpcb_unset(MOUNTPROG, MOUNTVERS, NULL); 3258194880Sdfr rpcb_unset(MOUNTPROG, MOUNTVERS3, NULL); 325974462Salfred exit (0); 326074462Salfred} 3261