mount.c revision 224294
128671Ssteve/*- 21558Srgrimes * Copyright (c) 1980, 1989, 1993, 1994 31558Srgrimes * The Regents of the University of California. All rights reserved. 41558Srgrimes * 51558Srgrimes * Redistribution and use in source and binary forms, with or without 61558Srgrimes * modification, are permitted provided that the following conditions 71558Srgrimes * are met: 81558Srgrimes * 1. Redistributions of source code must retain the above copyright 91558Srgrimes * notice, this list of conditions and the following disclaimer. 101558Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111558Srgrimes * notice, this list of conditions and the following disclaimer in the 121558Srgrimes * documentation and/or other materials provided with the distribution. 131558Srgrimes * 4. Neither the name of the University nor the names of its contributors 141558Srgrimes * may be used to endorse or promote products derived from this software 151558Srgrimes * without specific prior written permission. 161558Srgrimes * 171558Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 181558Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 191558Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 201558Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 211558Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 221558Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 231558Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 241558Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 251558Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 261558Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 271558Srgrimes * SUCH DAMAGE. 281558Srgrimes */ 291558Srgrimes 301558Srgrimes#ifndef lint 3128671Sstevestatic const char copyright[] = 321558Srgrimes"@(#) Copyright (c) 1980, 1989, 1993, 1994\n\ 331558Srgrimes The Regents of the University of California. All rights reserved.\n"; 3428671Ssteve#if 0 3523678Speterstatic char sccsid[] = "@(#)mount.c 8.25 (Berkeley) 5/8/95"; 3637425Scharnier#endif 371558Srgrimes#endif /* not lint */ 381558Srgrimes 39187093Sobrien#include <sys/cdefs.h> 40187093Sobrien__FBSDID("$FreeBSD: head/sbin/mount/mount.c 224294 2011-07-24 18:27:09Z mckusick $"); 41187093Sobrien 421558Srgrimes#include <sys/param.h> 431558Srgrimes#include <sys/mount.h> 4423805Sbde#include <sys/stat.h> 451558Srgrimes#include <sys/wait.h> 461558Srgrimes 4795289Smux#include <ctype.h> 481558Srgrimes#include <err.h> 491558Srgrimes#include <errno.h> 501558Srgrimes#include <fstab.h> 51117031Sgordon#include <paths.h> 5223678Speter#include <pwd.h> 531558Srgrimes#include <signal.h> 54123242Siedowse#include <stdint.h> 551558Srgrimes#include <stdio.h> 561558Srgrimes#include <stdlib.h> 571558Srgrimes#include <string.h> 581558Srgrimes#include <unistd.h> 59166439Spjd#include <libutil.h> 601558Srgrimes 6128671Ssteve#include "extern.h" 6252055Sphk#include "mntopts.h" 631558Srgrimes#include "pathnames.h" 641558Srgrimes 6546619Sjkoshy/* `meta' options */ 66125933Sgrog#define MOUNT_META_OPTION_FSTAB "fstab" 6746619Sjkoshy#define MOUNT_META_OPTION_CURRENT "current" 6846619Sjkoshy 6923805Sbdeint debug, fstab_style, verbose; 701558Srgrimes 71187035Sobrienstruct cpa { 72187093Sobrien char **a; 73187130Sobrien ssize_t sz; 74187035Sobrien int c; 75187035Sobrien}; 76187035Sobrien 7792882Simpchar *catopt(char *, const char *); 7892882Simpstruct statfs *getmntpt(const char *); 7992882Simpint hasopt(const char *, const char *); 8092882Simpint ismounted(struct fstab *, struct statfs *, int); 8192882Simpint isremountable(const char *); 82187035Sobrienvoid mangle(char *, struct cpa *); 8392882Simpchar *update_options(char *, char *, int); 8492882Simpint mountfs(const char *, const char *, const char *, 8592882Simp int, const char *, const char *); 8692882Simpvoid remopt(char *, const char *); 8792882Simpvoid prmount(struct statfs *); 88175949Smatteovoid putfsent(struct statfs *); 8992882Simpvoid usage(void); 9092882Simpchar *flags2opts(int); 911558Srgrimes 9237425Scharnier/* Map from mount options to printable formats. */ 931558Srgrimesstatic struct opt { 94204840Sbz uint64_t o_opt; 951558Srgrimes const char *o_name; 961558Srgrimes} optnames[] = { 971558Srgrimes { MNT_ASYNC, "asynchronous" }, 981558Srgrimes { MNT_EXPORTED, "NFS exported" }, 991558Srgrimes { MNT_LOCAL, "local" }, 10018007Sdg { MNT_NOATIME, "noatime" }, 1011558Srgrimes { MNT_NOEXEC, "noexec" }, 1021558Srgrimes { MNT_NOSUID, "nosuid" }, 10335105Swosch { MNT_NOSYMFOLLOW, "nosymfollow" }, 1041558Srgrimes { MNT_QUOTA, "with quotas" }, 1051558Srgrimes { MNT_RDONLY, "read-only" }, 1061558Srgrimes { MNT_SYNCHRONOUS, "synchronous" }, 1071558Srgrimes { MNT_UNION, "union" }, 10829890Skato { MNT_NOCLUSTERR, "noclusterr" }, 10929890Skato { MNT_NOCLUSTERW, "noclusterw" }, 11031144Sjulian { MNT_SUIDDIR, "suiddir" }, 11134266Sjulian { MNT_SOFTDEP, "soft-updates" }, 112224294Smckusick { MNT_SUJ, "journaled soft-updates" }, 113101205Srwatson { MNT_MULTILABEL, "multilabel" }, 114105118Srwatson { MNT_ACLS, "acls" }, 115200796Strasz { MNT_NFS4ACLS, "nfsv4acls" }, 116163843Spjd { MNT_GJOURNAL, "gjournal" }, 11746619Sjkoshy { 0, NULL } 1181558Srgrimes}; 1191558Srgrimes 12028671Ssteve/* 12128671Ssteve * List of VFS types that can be remounted without becoming mounted on top 12228671Ssteve * of each other. 12328671Ssteve * XXX Is this list correct? 12428671Ssteve */ 12528671Sstevestatic const char * 12628671Ssteveremountable_fs_names[] = { 12769056Sphantom "ufs", "ffs", "ext2fs", 12828671Ssteve 0 12928671Ssteve}; 13028671Ssteve 131158400Smaximstatic const char userquotaeq[] = "userquota="; 132158400Smaximstatic const char groupquotaeq[] = "groupquota="; 133158400Smaxim 134189397Srodrigcstatic char *mountprog = NULL; 135189397Srodrigc 136152344Srodrigcstatic int 137152344Srodrigcuse_mountprog(const char *vfstype) 138152344Srodrigc{ 139152344Srodrigc /* XXX: We need to get away from implementing external mount 140152344Srodrigc * programs for every filesystem, and move towards having 141152344Srodrigc * each filesystem properly implement the nmount() system call. 142152344Srodrigc */ 143152344Srodrigc unsigned int i; 144152344Srodrigc const char *fs[] = { 145221124Srmacklem "cd9660", "mfs", "msdosfs", "nfs", "ntfs", 146221124Srmacklem "nwfs", "nullfs", "oldnfs", "portalfs", "smbfs", "udf", "unionfs", 147152344Srodrigc NULL 148152344Srodrigc }; 149152344Srodrigc 150189397Srodrigc if (mountprog != NULL) 151189397Srodrigc return (1); 152189397Srodrigc 153159473Sjmallett for (i = 0; fs[i] != NULL; ++i) { 154152344Srodrigc if (strcmp(vfstype, fs[i]) == 0) 155159473Sjmallett return (1); 156152344Srodrigc } 157186505Sobrien 158159473Sjmallett return (0); 159152344Srodrigc} 160152344Srodrigc 161152344Srodrigcstatic int 162159473Sjmallettexec_mountprog(const char *name, const char *execname, char *const argv[]) 163152344Srodrigc{ 164152344Srodrigc pid_t pid; 165152344Srodrigc int status; 166152344Srodrigc 167152344Srodrigc switch (pid = fork()) { 168152344Srodrigc case -1: /* Error. */ 169152344Srodrigc warn("fork"); 170152344Srodrigc exit (1); 171152344Srodrigc case 0: /* Child. */ 172152344Srodrigc /* Go find an executable. */ 173152344Srodrigc execvP(execname, _PATH_SYSPATH, argv); 174152344Srodrigc if (errno == ENOENT) { 175189397Srodrigc warn("exec %s not found", execname); 176189397Srodrigc if (execname[0] != '/') { 177189397Srodrigc warnx("in path: %s", _PATH_SYSPATH); 178189397Srodrigc } 179152344Srodrigc } 180152344Srodrigc exit(1); 181152344Srodrigc default: /* Parent. */ 182152344Srodrigc if (waitpid(pid, &status, 0) < 0) { 183152344Srodrigc warn("waitpid"); 184152344Srodrigc return (1); 185152344Srodrigc } 186152344Srodrigc 187152344Srodrigc if (WIFEXITED(status)) { 188152344Srodrigc if (WEXITSTATUS(status) != 0) 189152344Srodrigc return (WEXITSTATUS(status)); 190152344Srodrigc } else if (WIFSIGNALED(status)) { 191152344Srodrigc warnx("%s: %s", name, sys_siglist[WTERMSIG(status)]); 192152344Srodrigc return (1); 193152344Srodrigc } 194152344Srodrigc break; 195152344Srodrigc } 196152344Srodrigc 197152344Srodrigc return (0); 198152344Srodrigc} 199152344Srodrigc 200163672Srustatic int 201163672Sruspecified_ro(const char *arg) 202163671Sru{ 203163671Sru char *optbuf, *opt; 204163671Sru int ret = 0; 205163671Sru 206163671Sru optbuf = strdup(arg); 207163671Sru if (optbuf == NULL) 208163671Sru err(1, NULL); 209163671Sru 210163671Sru for (opt = optbuf; (opt = strtok(opt, ",")) != NULL; opt = NULL) { 211163671Sru if (strcmp(opt, "ro") == 0) { 212163671Sru ret = 1; 213163671Sru break; 214163671Sru } 215163671Sru } 216163671Sru free(optbuf); 217163671Sru return (ret); 218163671Sru} 219163671Sru 220166439Spjdstatic void 221166439Spjdrestart_mountd(void) 222166439Spjd{ 223166439Spjd struct pidfh *pfh; 224186505Sobrien pid_t mountdpid; 225166439Spjd 226166439Spjd pfh = pidfile_open(_PATH_MOUNTDPID, 0600, &mountdpid); 227166439Spjd if (pfh != NULL) { 228166439Spjd /* Mountd is not running. */ 229166439Spjd pidfile_remove(pfh); 230166439Spjd return; 231166439Spjd } 232166439Spjd if (errno != EEXIST) { 233166439Spjd /* Cannot open pidfile for some reason. */ 234166439Spjd return; 235166439Spjd } 236166439Spjd /* We have mountd(8) PID in mountdpid varible, let's signal it. */ 237166439Spjd if (kill(mountdpid, SIGHUP) == -1) 238166439Spjd err(1, "signal mountd"); 239166439Spjd} 240166439Spjd 2411558Srgrimesint 242151042Srodrigcmain(int argc, char *argv[]) 2431558Srgrimes{ 24423678Speter const char *mntfromname, **vfslist, *vfstype; 2451558Srgrimes struct fstab *fs; 2461558Srgrimes struct statfs *mntbuf; 247222832Sdelphij int all, ch, i, init_flags, late, failok, mntsize, rval, have_fstab, ro; 24895289Smux char *cp, *ep, *options; 2491558Srgrimes 250160303Sdes all = init_flags = late = 0; 251163671Sru ro = 0; 252163671Sru options = NULL; 2531558Srgrimes vfslist = NULL; 2541558Srgrimes vfstype = "ufs"; 255163672Sru while ((ch = getopt(argc, argv, "adF:flo:prt:uvw")) != -1) 2561558Srgrimes switch (ch) { 2571558Srgrimes case 'a': 2581558Srgrimes all = 1; 2591558Srgrimes break; 2601558Srgrimes case 'd': 2611558Srgrimes debug = 1; 2621558Srgrimes break; 263113220Smdodd case 'F': 264113220Smdodd setfstab(optarg); 265113220Smdodd break; 2661558Srgrimes case 'f': 2671558Srgrimes init_flags |= MNT_FORCE; 2681558Srgrimes break; 269160303Sdes case 'l': 270160303Sdes late = 1; 271160303Sdes break; 2721558Srgrimes case 'o': 273163671Sru if (*optarg) { 274163671Sru options = catopt(options, optarg); 275163671Sru if (specified_ro(optarg)) 276163671Sru ro = 1; 277163671Sru } 2781558Srgrimes break; 27923805Sbde case 'p': 28023805Sbde fstab_style = 1; 28123805Sbde verbose = 1; 28223805Sbde break; 2831558Srgrimes case 'r': 28476198Sdd options = catopt(options, "ro"); 285163671Sru ro = 1; 2861558Srgrimes break; 2871558Srgrimes case 't': 2881558Srgrimes if (vfslist != NULL) 28937425Scharnier errx(1, "only one -t option may be specified"); 2901558Srgrimes vfslist = makevfslist(optarg); 2911558Srgrimes vfstype = optarg; 2921558Srgrimes break; 2931558Srgrimes case 'u': 2941558Srgrimes init_flags |= MNT_UPDATE; 2951558Srgrimes break; 2961558Srgrimes case 'v': 2971558Srgrimes verbose = 1; 2981558Srgrimes break; 2991558Srgrimes case 'w': 30076198Sdd options = catopt(options, "noro"); 3011558Srgrimes break; 3021558Srgrimes case '?': 3031558Srgrimes default: 3041558Srgrimes usage(); 3051558Srgrimes /* NOTREACHED */ 3061558Srgrimes } 3071558Srgrimes argc -= optind; 3081558Srgrimes argv += optind; 3091558Srgrimes 3101558Srgrimes#define BADTYPE(type) \ 3111558Srgrimes (strcmp(type, FSTAB_RO) && \ 3121558Srgrimes strcmp(type, FSTAB_RW) && strcmp(type, FSTAB_RQ)) 3131558Srgrimes 314163671Sru if ((init_flags & MNT_UPDATE) && (ro == 0)) 315163671Sru options = catopt(options, "noro"); 316186505Sobrien 3171558Srgrimes rval = 0; 3181558Srgrimes switch (argc) { 3191558Srgrimes case 0: 320224294Smckusick if ((mntsize = getmntinfo(&mntbuf, MNT_WAIT)) == 0) 32128671Ssteve err(1, "getmntinfo"); 32228671Ssteve if (all) { 3231558Srgrimes while ((fs = getfsent()) != NULL) { 3241558Srgrimes if (BADTYPE(fs->fs_type)) 3251558Srgrimes continue; 32623678Speter if (checkvfsname(fs->fs_vfstype, vfslist)) 3271558Srgrimes continue; 32823678Speter if (hasopt(fs->fs_mntops, "noauto")) 32910288Sdg continue; 330160303Sdes if (hasopt(fs->fs_mntops, "late") && !late) 331160303Sdes continue; 332222832Sdelphij if (hasopt(fs->fs_mntops, "failok")) 333222832Sdelphij failok = 1; 334222832Sdelphij else 335222832Sdelphij failok = 0; 33644811Sbde if (!(init_flags & MNT_UPDATE) && 33744811Sbde ismounted(fs, mntbuf, mntsize)) 33828671Ssteve continue; 339125194Sguido options = update_options(options, fs->fs_mntops, 340125194Sguido mntbuf->f_flags); 3411558Srgrimes if (mountfs(fs->fs_vfstype, fs->fs_spec, 34223805Sbde fs->fs_file, init_flags, options, 343222832Sdelphij fs->fs_mntops) && !failok) 34423805Sbde rval = 1; 3451558Srgrimes } 34628671Ssteve } else if (fstab_style) { 34717243Sjkh for (i = 0; i < mntsize; i++) { 34823678Speter if (checkvfsname(mntbuf[i].f_fstypename, vfslist)) 34917243Sjkh continue; 35023805Sbde putfsent(&mntbuf[i]); 35117243Sjkh } 35223805Sbde } else { 3531558Srgrimes for (i = 0; i < mntsize; i++) { 35423805Sbde if (checkvfsname(mntbuf[i].f_fstypename, 35523805Sbde vfslist)) 3561558Srgrimes continue; 357197200Spjd if (!verbose && 358197200Spjd (mntbuf[i].f_flags & MNT_IGNORE) != 0) 359197200Spjd continue; 36023678Speter prmount(&mntbuf[i]); 3611558Srgrimes } 3621558Srgrimes } 3631558Srgrimes exit(rval); 3641558Srgrimes case 1: 3651558Srgrimes if (vfslist != NULL) 3661558Srgrimes usage(); 3671558Srgrimes 368124201Sanholt rmslashes(*argv, *argv); 3691558Srgrimes if (init_flags & MNT_UPDATE) { 37052678Sgreen mntfromname = NULL; 37152678Sgreen have_fstab = 0; 3721558Srgrimes if ((mntbuf = getmntpt(*argv)) == NULL) 37352678Sgreen errx(1, "not currently mounted %s", *argv); 37452678Sgreen /* 37552678Sgreen * Only get the mntflags from fstab if both mntpoint 37652678Sgreen * and mntspec are identical. Also handle the special 37752678Sgreen * case where just '/' is mounted and 'spec' is not 37852678Sgreen * identical with the one from fstab ('/dev' is missing 37952678Sgreen * in the spec-string at boot-time). 38052678Sgreen */ 38146619Sjkoshy if ((fs = getfsfile(mntbuf->f_mntonname)) != NULL) { 38252678Sgreen if (strcmp(fs->fs_spec, 38352678Sgreen mntbuf->f_mntfromname) == 0 && 38452678Sgreen strcmp(fs->fs_file, 38552678Sgreen mntbuf->f_mntonname) == 0) { 38652678Sgreen have_fstab = 1; 38752678Sgreen mntfromname = mntbuf->f_mntfromname; 38852678Sgreen } else if (argv[0][0] == '/' && 38952678Sgreen argv[0][1] == '\0') { 39052678Sgreen fs = getfsfile("/"); 39152678Sgreen have_fstab = 1; 39252678Sgreen mntfromname = fs->fs_spec; 39352678Sgreen } 39452678Sgreen } 39552678Sgreen if (have_fstab) { 39646619Sjkoshy options = update_options(options, fs->fs_mntops, 39746619Sjkoshy mntbuf->f_flags); 39846619Sjkoshy } else { 39923678Speter mntfromname = mntbuf->f_mntfromname; 40046619Sjkoshy options = update_options(options, NULL, 40146619Sjkoshy mntbuf->f_flags); 40246619Sjkoshy } 40323678Speter rval = mountfs(mntbuf->f_fstypename, mntfromname, 40423678Speter mntbuf->f_mntonname, init_flags, options, 0); 40523678Speter break; 4061558Srgrimes } 40723678Speter if ((fs = getfsfile(*argv)) == NULL && 40823678Speter (fs = getfsspec(*argv)) == NULL) 409102231Strhodes errx(1, "%s: unknown special file or file system", 41023678Speter *argv); 41123678Speter if (BADTYPE(fs->fs_type)) 412102231Strhodes errx(1, "%s has unknown file system type", 41323678Speter *argv); 41423678Speter rval = mountfs(fs->fs_vfstype, fs->fs_spec, fs->fs_file, 41523678Speter init_flags, options, fs->fs_mntops); 4161558Srgrimes break; 4171558Srgrimes case 2: 4181558Srgrimes /* 41952678Sgreen * If -t flag has not been specified, the path cannot be 42095289Smux * found, spec contains either a ':' or a '@', then assume 421102231Strhodes * that an NFS file system is being specified ala Sun. 42295289Smux * Check if the hostname contains only allowed characters 42395289Smux * to reduce false positives. IPv6 addresses containing 42495289Smux * ':' will be correctly parsed only if the separator is '@'. 42595289Smux * The definition of a valid hostname is taken from RFC 1034. 4261558Srgrimes */ 427123162Siedowse if (vfslist == NULL && ((ep = strchr(argv[0], '@')) != NULL || 428123162Siedowse (ep = strchr(argv[0], ':')) != NULL)) { 42995318Smux if (*ep == '@') { 43095318Smux cp = ep + 1; 43195318Smux ep = cp + strlen(cp); 43295318Smux } else 43395318Smux cp = argv[0]; 43495289Smux while (cp != ep) { 43595289Smux if (!isdigit(*cp) && !isalpha(*cp) && 43695289Smux *cp != '.' && *cp != '-' && *cp != ':') 43795289Smux break; 43895289Smux cp++; 43995289Smux } 44095289Smux if (cp == ep) 44195289Smux vfstype = "nfs"; 44295289Smux } 4431558Srgrimes rval = mountfs(vfstype, 4441558Srgrimes argv[0], argv[1], init_flags, options, NULL); 4451558Srgrimes break; 4461558Srgrimes default: 4471558Srgrimes usage(); 4481558Srgrimes /* NOTREACHED */ 4491558Srgrimes } 4501558Srgrimes 4511558Srgrimes /* 4521558Srgrimes * If the mount was successfully, and done by root, tell mountd the 453166439Spjd * good news. 4541558Srgrimes */ 455166439Spjd if (rval == 0 && getuid() == 0) 456166439Spjd restart_mountd(); 4571558Srgrimes 4581558Srgrimes exit(rval); 4591558Srgrimes} 4601558Srgrimes 4611558Srgrimesint 462151042Srodrigcismounted(struct fstab *fs, struct statfs *mntbuf, int mntsize) 46328671Ssteve{ 464154512Spjd char realfsfile[PATH_MAX]; 46528671Ssteve int i; 46628671Ssteve 46728671Ssteve if (fs->fs_file[0] == '/' && fs->fs_file[1] == '\0') 468102231Strhodes /* the root file system can always be remounted */ 46928671Ssteve return (0); 47028671Ssteve 471154512Spjd /* The user may have specified a symlink in fstab, resolve the path */ 472154512Spjd if (realpath(fs->fs_file, realfsfile) == NULL) { 473154512Spjd /* Cannot resolve the path, use original one */ 474154512Spjd strlcpy(realfsfile, fs->fs_file, sizeof(realfsfile)); 475154512Spjd } 476154512Spjd 47728671Ssteve for (i = mntsize - 1; i >= 0; --i) 478154512Spjd if (strcmp(realfsfile, mntbuf[i].f_mntonname) == 0 && 47928671Ssteve (!isremountable(fs->fs_vfstype) || 48028671Ssteve strcmp(fs->fs_spec, mntbuf[i].f_mntfromname) == 0)) 48128671Ssteve return (1); 48228671Ssteve return (0); 48328671Ssteve} 48428671Ssteve 48528671Ssteveint 486151042Srodrigcisremountable(const char *vfsname) 48728671Ssteve{ 48828671Ssteve const char **cp; 48928671Ssteve 49028671Ssteve for (cp = remountable_fs_names; *cp; cp++) 49128671Ssteve if (strcmp(*cp, vfsname) == 0) 49228671Ssteve return (1); 49328671Ssteve return (0); 49428671Ssteve} 49528671Ssteve 49628671Ssteveint 497151042Srodrigchasopt(const char *mntopts, const char *option) 49823678Speter{ 49923678Speter int negative, found; 50023678Speter char *opt, *optbuf; 50123678Speter 50223678Speter if (option[0] == 'n' && option[1] == 'o') { 50323678Speter negative = 1; 50423678Speter option += 2; 50523678Speter } else 50623678Speter negative = 0; 50723678Speter optbuf = strdup(mntopts); 50823678Speter found = 0; 50923678Speter for (opt = optbuf; (opt = strtok(opt, ",")) != NULL; opt = NULL) { 51023678Speter if (opt[0] == 'n' && opt[1] == 'o') { 51123678Speter if (!strcasecmp(opt + 2, option)) 51223678Speter found = negative; 51323678Speter } else if (!strcasecmp(opt, option)) 51423678Speter found = !negative; 51523678Speter } 51623678Speter free(optbuf); 51723678Speter return (found); 51823678Speter} 51923678Speter 520187035Sobrienstatic void 521187035Sobrienappend_arg(struct cpa *sa, char *arg) 522187035Sobrien{ 523187130Sobrien if (sa->c + 1 == sa->sz) { 524187130Sobrien sa->sz = sa->sz == 0 ? 8 : sa->sz * 2; 525187130Sobrien sa->a = realloc(sa->a, sizeof(sa->a) * sa->sz); 526187093Sobrien if (sa->a == NULL) 527187093Sobrien errx(1, "realloc failed"); 528187093Sobrien } 529187035Sobrien sa->a[++sa->c] = arg; 530187035Sobrien} 531187035Sobrien 53223678Speterint 533151042Srodrigcmountfs(const char *vfstype, const char *spec, const char *name, int flags, 534151042Srodrigc const char *options, const char *mntopts) 5351558Srgrimes{ 5361558Srgrimes struct statfs sf; 537186504Sobrien int i, ret; 538118580Simp char *optbuf, execname[PATH_MAX], mntpath[PATH_MAX]; 539187130Sobrien static struct cpa mnt_argv; 5401558Srgrimes 54152055Sphk /* resolve the mountpoint with realpath(3) */ 54252055Sphk (void)checkpath(name, mntpath); 5431558Srgrimes name = mntpath; 5441558Srgrimes 54523678Speter if (mntopts == NULL) 54623678Speter mntopts = ""; 5471558Srgrimes optbuf = catopt(strdup(mntopts), options); 5481558Srgrimes 5491558Srgrimes if (strcmp(name, "/") == 0) 5501558Srgrimes flags |= MNT_UPDATE; 5511558Srgrimes if (flags & MNT_FORCE) 5521558Srgrimes optbuf = catopt(optbuf, "force"); 5531558Srgrimes if (flags & MNT_RDONLY) 5541558Srgrimes optbuf = catopt(optbuf, "ro"); 5551558Srgrimes /* 5561558Srgrimes * XXX 5571558Srgrimes * The mount_mfs (newfs) command uses -o to select the 55837425Scharnier * optimization mode. We don't pass the default "-o rw" 5591558Srgrimes * for that reason. 5601558Srgrimes */ 5611558Srgrimes if (flags & MNT_UPDATE) 5621558Srgrimes optbuf = catopt(optbuf, "update"); 5631558Srgrimes 56477577Sru /* Compatibility glue. */ 565166526Srodrigc if (strcmp(vfstype, "msdos") == 0) { 566166526Srodrigc warnx( 567166526Srodrigc "Using \"-t msdosfs\", since \"-t msdos\" is deprecated."); 56877577Sru vfstype = "msdosfs"; 569166526Srodrigc } 57077577Sru 571144133Scperciva /* Construct the name of the appropriate mount command */ 572144133Scperciva (void)snprintf(execname, sizeof(execname), "mount_%s", vfstype); 573144133Scperciva 574187035Sobrien mnt_argv.c = -1; 575187035Sobrien append_arg(&mnt_argv, execname); 576187035Sobrien mangle(optbuf, &mnt_argv); 577189397Srodrigc if (mountprog != NULL) 578189397Srodrigc strcpy(execname, mountprog); 579189397Srodrigc 580187035Sobrien append_arg(&mnt_argv, strdup(spec)); 581187035Sobrien append_arg(&mnt_argv, strdup(name)); 582187035Sobrien append_arg(&mnt_argv, NULL); 5831558Srgrimes 5841558Srgrimes if (debug) { 585164266Srodrigc if (use_mountprog(vfstype)) 586189397Srodrigc printf("exec: %s", execname); 587164266Srodrigc else 588164266Srodrigc printf("mount -t %s", vfstype); 589187035Sobrien for (i = 1; i < mnt_argv.c; i++) 590187035Sobrien (void)printf(" %s", mnt_argv.a[i]); 5911558Srgrimes (void)printf("\n"); 5921558Srgrimes return (0); 5931558Srgrimes } 5941558Srgrimes 595152668Srodrigc if (use_mountprog(vfstype)) { 596187035Sobrien ret = exec_mountprog(name, execname, mnt_argv.a); 597152344Srodrigc } else { 598187035Sobrien ret = mount_fs(vfstype, mnt_argv.c, mnt_argv.a); 599152344Srodrigc } 6001558Srgrimes 601152344Srodrigc free(optbuf); 6021558Srgrimes 603152344Srodrigc if (verbose) { 604152344Srodrigc if (statfs(name, &sf) < 0) { 605152344Srodrigc warn("statfs %s", name); 6061558Srgrimes return (1); 6071558Srgrimes } 608152344Srodrigc if (fstab_style) 609152344Srodrigc putfsent(&sf); 610152344Srodrigc else 611152344Srodrigc prmount(&sf); 6121558Srgrimes } 6131558Srgrimes 614182570Smatteo return (ret); 6151558Srgrimes} 6161558Srgrimes 6171558Srgrimesvoid 618151042Srodrigcprmount(struct statfs *sfp) 61923678Speter{ 620204840Sbz uint64_t flags; 621151043Srodrigc unsigned int i; 6221558Srgrimes struct opt *o; 62323678Speter struct passwd *pw; 6241558Srgrimes 62552036Sn_hibma (void)printf("%s on %s (%s", sfp->f_mntfromname, sfp->f_mntonname, 62652036Sn_hibma sfp->f_fstypename); 6271558Srgrimes 62823678Speter flags = sfp->f_flags & MNT_VISFLAGMASK; 629204840Sbz for (o = optnames; flags != 0 && o->o_opt != 0; o++) 6301558Srgrimes if (flags & o->o_opt) { 63152036Sn_hibma (void)printf(", %s", o->o_name); 6321558Srgrimes flags &= ~o->o_opt; 6331558Srgrimes } 634125339Spjd /* 635125339Spjd * Inform when file system is mounted by an unprivileged user 636125339Spjd * or privileged non-root user. 637125339Spjd */ 638125365Snectar if ((flags & MNT_USER) != 0 || sfp->f_owner != 0) { 63952036Sn_hibma (void)printf(", mounted by "); 64023678Speter if ((pw = getpwuid(sfp->f_owner)) != NULL) 64123678Speter (void)printf("%s", pw->pw_name); 64223678Speter else 64323678Speter (void)printf("%d", sfp->f_owner); 64423678Speter } 64565023Ssheldonh if (verbose) { 64665023Ssheldonh if (sfp->f_syncwrites != 0 || sfp->f_asyncwrites != 0) 647123242Siedowse (void)printf(", writes: sync %ju async %ju", 648123242Siedowse (uintmax_t)sfp->f_syncwrites, 649123242Siedowse (uintmax_t)sfp->f_asyncwrites); 65065023Ssheldonh if (sfp->f_syncreads != 0 || sfp->f_asyncreads != 0) 651123242Siedowse (void)printf(", reads: sync %ju async %ju", 652123242Siedowse (uintmax_t)sfp->f_syncreads, 653123242Siedowse (uintmax_t)sfp->f_asyncreads); 654123162Siedowse if (sfp->f_fsid.val[0] != 0 || sfp->f_fsid.val[1] != 0) { 655123162Siedowse printf(", fsid "); 656123162Siedowse for (i = 0; i < sizeof(sfp->f_fsid); i++) 657123162Siedowse printf("%02x", ((u_char *)&sfp->f_fsid)[i]); 658123162Siedowse } 65965023Ssheldonh } 66052036Sn_hibma (void)printf(")\n"); 6611558Srgrimes} 6621558Srgrimes 6631558Srgrimesstruct statfs * 664151042Srodrigcgetmntpt(const char *name) 6651558Srgrimes{ 6661558Srgrimes struct statfs *mntbuf; 6671558Srgrimes int i, mntsize; 6681558Srgrimes 669224294Smckusick mntsize = getmntinfo(&mntbuf, MNT_WAIT); 67052678Sgreen for (i = mntsize - 1; i >= 0; i--) { 6711558Srgrimes if (strcmp(mntbuf[i].f_mntfromname, name) == 0 || 6721558Srgrimes strcmp(mntbuf[i].f_mntonname, name) == 0) 6731558Srgrimes return (&mntbuf[i]); 67452678Sgreen } 6751558Srgrimes return (NULL); 6761558Srgrimes} 6771558Srgrimes 6781558Srgrimeschar * 679151042Srodrigccatopt(char *s0, const char *s1) 6801558Srgrimes{ 6811558Srgrimes size_t i; 6821558Srgrimes char *cp; 6831558Srgrimes 68446619Sjkoshy if (s1 == NULL || *s1 == '\0') 685159473Sjmallett return (s0); 68646619Sjkoshy 6871558Srgrimes if (s0 && *s0) { 6881558Srgrimes i = strlen(s0) + strlen(s1) + 1 + 1; 6891558Srgrimes if ((cp = malloc(i)) == NULL) 69037425Scharnier errx(1, "malloc failed"); 6911558Srgrimes (void)snprintf(cp, i, "%s,%s", s0, s1); 6921558Srgrimes } else 6931558Srgrimes cp = strdup(s1); 6941558Srgrimes 6951558Srgrimes if (s0) 6961558Srgrimes free(s0); 6971558Srgrimes return (cp); 6981558Srgrimes} 6991558Srgrimes 7001558Srgrimesvoid 701187035Sobrienmangle(char *options, struct cpa *a) 7021558Srgrimes{ 703189397Srodrigc char *p, *s, *val; 7041558Srgrimes 7051558Srgrimes for (s = options; (p = strsep(&s, ",")) != NULL;) 70646619Sjkoshy if (*p != '\0') { 707152465Srodrigc if (strcmp(p, "noauto") == 0) { 708152465Srodrigc /* 709152465Srodrigc * Do not pass noauto option to nmount(). 710152465Srodrigc * or external mount program. noauto is 711152465Srodrigc * only used to prevent mounting a filesystem 712152465Srodrigc * when 'mount -a' is specified, and is 713152465Srodrigc * not a real mount option. 714152465Srodrigc */ 715152465Srodrigc continue; 716160303Sdes } else if (strcmp(p, "late") == 0) { 717160303Sdes /* 718160303Sdes * "late" is used to prevent certain file 719160303Sdes * systems from being mounted before late 720160303Sdes * in the boot cycle; for instance, 721160303Sdes * loopback NFS mounts can't be mounted 722160303Sdes * before mountd starts. 723160303Sdes */ 724160303Sdes continue; 725222832Sdelphij } else if (strcmp(p, "failok") == 0) { 726222832Sdelphij /* 727222832Sdelphij * "failok" is used to prevent certain file 728222832Sdelphij * systems from being causing the system to 729222832Sdelphij * drop into single user mode in the boot 730222832Sdelphij * cycle, and is not a real mount option. 731222832Sdelphij */ 732222832Sdelphij continue; 733189397Srodrigc } else if (strncmp(p, "mountprog", 9) == 0) { 734189397Srodrigc /* 735189397Srodrigc * "mountprog" is used to force the use of 736189397Srodrigc * userland mount programs. 737189397Srodrigc */ 738189397Srodrigc val = strchr(p, '='); 739189397Srodrigc if (val != NULL) { 740189397Srodrigc ++val; 741189397Srodrigc if (*val != '\0') 742189397Srodrigc mountprog = strdup(val); 743189397Srodrigc } 744189397Srodrigc 745189397Srodrigc if (mountprog == NULL) { 746189397Srodrigc errx(1, "Need value for -o mountprog"); 747189397Srodrigc } 748189397Srodrigc continue; 749152732Srodrigc } else if (strcmp(p, "userquota") == 0) { 750152732Srodrigc continue; 751158400Smaxim } else if (strncmp(p, userquotaeq, 752158400Smaxim sizeof(userquotaeq) - 1) == 0) { 753158400Smaxim continue; 754152732Srodrigc } else if (strcmp(p, "groupquota") == 0) { 755152732Srodrigc continue; 756158400Smaxim } else if (strncmp(p, groupquotaeq, 757158400Smaxim sizeof(groupquotaeq) - 1) == 0) { 758158400Smaxim continue; 759152465Srodrigc } else if (*p == '-') { 760187035Sobrien append_arg(a, p); 7611558Srgrimes p = strchr(p, '='); 762123268Strhodes if (p != NULL) { 7631558Srgrimes *p = '\0'; 764187035Sobrien append_arg(a, p + 1); 7651558Srgrimes } 766153038Srodrigc } else { 767187035Sobrien append_arg(a, strdup("-o")); 768187035Sobrien append_arg(a, p); 7691558Srgrimes } 77046619Sjkoshy } 7711558Srgrimes} 7721558Srgrimes 77346619Sjkoshy 77446619Sjkoshychar * 775159473Sjmallettupdate_options(char *opts, char *fstab, int curflags) 77646619Sjkoshy{ 77746619Sjkoshy char *o, *p; 77846619Sjkoshy char *cur; 77946619Sjkoshy char *expopt, *newopt, *tmpopt; 78046619Sjkoshy 78146619Sjkoshy if (opts == NULL) 782159473Sjmallett return (strdup("")); 78346619Sjkoshy 78446619Sjkoshy /* remove meta options from list */ 78546619Sjkoshy remopt(fstab, MOUNT_META_OPTION_FSTAB); 78646619Sjkoshy remopt(fstab, MOUNT_META_OPTION_CURRENT); 78746619Sjkoshy cur = flags2opts(curflags); 78846619Sjkoshy 78946619Sjkoshy /* 79046619Sjkoshy * Expand all meta-options passed to us first. 79146619Sjkoshy */ 79246619Sjkoshy expopt = NULL; 79346619Sjkoshy for (p = opts; (o = strsep(&p, ",")) != NULL;) { 79446619Sjkoshy if (strcmp(MOUNT_META_OPTION_FSTAB, o) == 0) 79546619Sjkoshy expopt = catopt(expopt, fstab); 79646619Sjkoshy else if (strcmp(MOUNT_META_OPTION_CURRENT, o) == 0) 79746619Sjkoshy expopt = catopt(expopt, cur); 79846619Sjkoshy else 79946619Sjkoshy expopt = catopt(expopt, o); 80046619Sjkoshy } 80146619Sjkoshy free(cur); 80246619Sjkoshy free(opts); 80346619Sjkoshy 80446619Sjkoshy /* 80546619Sjkoshy * Remove previous contradictory arguments. Given option "foo" we 80646619Sjkoshy * remove all the "nofoo" options. Given "nofoo" we remove "nonofoo" 80746619Sjkoshy * and "foo" - so we can deal with possible options like "notice". 80846619Sjkoshy */ 80946619Sjkoshy newopt = NULL; 81046619Sjkoshy for (p = expopt; (o = strsep(&p, ",")) != NULL;) { 81146619Sjkoshy if ((tmpopt = malloc( strlen(o) + 2 + 1 )) == NULL) 81246619Sjkoshy errx(1, "malloc failed"); 813125933Sgrog 81446619Sjkoshy strcpy(tmpopt, "no"); 81546619Sjkoshy strcat(tmpopt, o); 81646619Sjkoshy remopt(newopt, tmpopt); 81746619Sjkoshy free(tmpopt); 81846619Sjkoshy 81946619Sjkoshy if (strncmp("no", o, 2) == 0) 82046619Sjkoshy remopt(newopt, o+2); 82146619Sjkoshy 82246619Sjkoshy newopt = catopt(newopt, o); 82346619Sjkoshy } 82446619Sjkoshy free(expopt); 82546619Sjkoshy 826159473Sjmallett return (newopt); 82746619Sjkoshy} 82846619Sjkoshy 8291558Srgrimesvoid 830159473Sjmallettremopt(char *string, const char *opt) 83146619Sjkoshy{ 83246619Sjkoshy char *o, *p, *r; 83346619Sjkoshy 83446619Sjkoshy if (string == NULL || *string == '\0' || opt == NULL || *opt == '\0') 83546619Sjkoshy return; 83646619Sjkoshy 83746619Sjkoshy r = string; 83846619Sjkoshy 83946619Sjkoshy for (p = string; (o = strsep(&p, ",")) != NULL;) { 84046619Sjkoshy if (strcmp(opt, o) != 0) { 84146619Sjkoshy if (*r == ',' && *o != '\0') 84246619Sjkoshy r++; 84346619Sjkoshy while ((*r++ = *o++) != '\0') 84446619Sjkoshy ; 84546619Sjkoshy *--r = ','; 84646619Sjkoshy } 84746619Sjkoshy } 84846619Sjkoshy *r = '\0'; 84946619Sjkoshy} 85046619Sjkoshy 85146619Sjkoshyvoid 852159473Sjmallettusage(void) 8531558Srgrimes{ 8541558Srgrimes 85537425Scharnier (void)fprintf(stderr, "%s\n%s\n%s\n", 856160303Sdes"usage: mount [-adflpruvw] [-F fstab] [-o options] [-t ufs | external_type]", 857141611Sru" mount [-dfpruvw] special | node", 858141611Sru" mount [-dfpruvw] [-o options] [-t ufs | external_type] special node"); 8591558Srgrimes exit(1); 8601558Srgrimes} 86117243Sjkh 86217243Sjkhvoid 863175949Smatteoputfsent(struct statfs *ent) 86417243Sjkh{ 86523805Sbde struct fstab *fst; 866213298Sjh char *opts, *rw; 867168698Sphk int l; 868125933Sgrog 869213298Sjh opts = NULL; 870213298Sjh /* flags2opts() doesn't return the "rw" option. */ 871213298Sjh if ((ent->f_flags & MNT_RDONLY) != 0) 872213298Sjh rw = NULL; 873213298Sjh else 874213298Sjh rw = catopt(NULL, "rw"); 875213298Sjh 87646619Sjkoshy opts = flags2opts(ent->f_flags); 877213298Sjh opts = catopt(rw, opts); 878156229Skeramida 879175949Smatteo if (strncmp(ent->f_mntfromname, "<below>", 7) == 0 || 880175949Smatteo strncmp(ent->f_mntfromname, "<above>", 7) == 0) { 881175949Smatteo strcpy(ent->f_mntfromname, (strnstr(ent->f_mntfromname, ":", 8) 882175949Smatteo +1)); 883175949Smatteo } 884175949Smatteo 885168698Sphk l = strlen(ent->f_mntfromname); 886168698Sphk printf("%s%s%s%s", ent->f_mntfromname, 887168698Sphk l < 8 ? "\t" : "", 888168698Sphk l < 16 ? "\t" : "", 889168698Sphk l < 24 ? "\t" : " "); 890168698Sphk l = strlen(ent->f_mntonname); 891168698Sphk printf("%s%s%s%s", ent->f_mntonname, 892168698Sphk l < 8 ? "\t" : "", 893168698Sphk l < 16 ? "\t" : "", 894168698Sphk l < 24 ? "\t" : " "); 895168698Sphk printf("%s\t", ent->f_fstypename); 896213298Sjh l = strlen(opts); 897213298Sjh printf("%s%s", opts, 898213298Sjh l < 8 ? "\t" : " "); 89946619Sjkoshy free(opts); 90017243Sjkh 90128671Ssteve if ((fst = getfsspec(ent->f_mntfromname))) 90223805Sbde printf("\t%u %u\n", fst->fs_freq, fst->fs_passno); 90328671Ssteve else if ((fst = getfsfile(ent->f_mntonname))) 90423805Sbde printf("\t%u %u\n", fst->fs_freq, fst->fs_passno); 90556038Sgreen else if (strcmp(ent->f_fstypename, "ufs") == 0) { 90656038Sgreen if (strcmp(ent->f_mntonname, "/") == 0) 90756038Sgreen printf("\t1 1\n"); 90856038Sgreen else 90956038Sgreen printf("\t2 2\n"); 91056038Sgreen } else 91123805Sbde printf("\t0 0\n"); 91217243Sjkh} 91346619Sjkoshy 91446619Sjkoshy 91546619Sjkoshychar * 916159473Sjmallettflags2opts(int flags) 91746619Sjkoshy{ 91846619Sjkoshy char *res; 91946619Sjkoshy 92046619Sjkoshy res = NULL; 92146619Sjkoshy 922155997Srodrigc if (flags & MNT_RDONLY) res = catopt(res, "ro"); 92346619Sjkoshy if (flags & MNT_SYNCHRONOUS) res = catopt(res, "sync"); 92446619Sjkoshy if (flags & MNT_NOEXEC) res = catopt(res, "noexec"); 92546619Sjkoshy if (flags & MNT_NOSUID) res = catopt(res, "nosuid"); 92646619Sjkoshy if (flags & MNT_UNION) res = catopt(res, "union"); 92746619Sjkoshy if (flags & MNT_ASYNC) res = catopt(res, "async"); 92846619Sjkoshy if (flags & MNT_NOATIME) res = catopt(res, "noatime"); 92946619Sjkoshy if (flags & MNT_NOCLUSTERR) res = catopt(res, "noclusterr"); 93046619Sjkoshy if (flags & MNT_NOCLUSTERW) res = catopt(res, "noclusterw"); 93146619Sjkoshy if (flags & MNT_NOSYMFOLLOW) res = catopt(res, "nosymfollow"); 93246619Sjkoshy if (flags & MNT_SUIDDIR) res = catopt(res, "suiddir"); 933101205Srwatson if (flags & MNT_MULTILABEL) res = catopt(res, "multilabel"); 934105118Srwatson if (flags & MNT_ACLS) res = catopt(res, "acls"); 935200796Strasz if (flags & MNT_NFS4ACLS) res = catopt(res, "nfsv4acls"); 93646619Sjkoshy 937159473Sjmallett return (res); 93846619Sjkoshy} 939