mount.c revision 163672
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"; 341558Srgrimes#endif /* not lint */ 351558Srgrimes 361558Srgrimes#ifndef lint 3728671Ssteve#if 0 3823678Speterstatic char sccsid[] = "@(#)mount.c 8.25 (Berkeley) 5/8/95"; 3937425Scharnier#endif 4028671Sstevestatic const char rcsid[] = 4150476Speter "$FreeBSD: head/sbin/mount/mount.c 163672 2006-10-24 22:16:51Z ru $"; 421558Srgrimes#endif /* not lint */ 431558Srgrimes 441558Srgrimes#include <sys/param.h> 451558Srgrimes#include <sys/mount.h> 4623805Sbde#include <sys/stat.h> 471558Srgrimes#include <sys/wait.h> 481558Srgrimes 4995289Smux#include <ctype.h> 501558Srgrimes#include <err.h> 511558Srgrimes#include <errno.h> 521558Srgrimes#include <fstab.h> 53117031Sgordon#include <paths.h> 5423678Speter#include <pwd.h> 551558Srgrimes#include <signal.h> 56123242Siedowse#include <stdint.h> 571558Srgrimes#include <stdio.h> 581558Srgrimes#include <stdlib.h> 591558Srgrimes#include <string.h> 601558Srgrimes#include <unistd.h> 611558Srgrimes 6228671Ssteve#include "extern.h" 6352055Sphk#include "mntopts.h" 641558Srgrimes#include "pathnames.h" 651558Srgrimes 6646619Sjkoshy/* `meta' options */ 67125933Sgrog#define MOUNT_META_OPTION_FSTAB "fstab" 6846619Sjkoshy#define MOUNT_META_OPTION_CURRENT "current" 6946619Sjkoshy 7023805Sbdeint debug, fstab_style, verbose; 711558Srgrimes 7292882Simpchar *catopt(char *, const char *); 7392882Simpstruct statfs *getmntpt(const char *); 7492882Simpint hasopt(const char *, const char *); 7592882Simpint ismounted(struct fstab *, struct statfs *, int); 7692882Simpint isremountable(const char *); 77159473Sjmallettvoid mangle(char *, int *, char *[]); 7892882Simpchar *update_options(char *, char *, int); 7992882Simpint mountfs(const char *, const char *, const char *, 8092882Simp int, const char *, const char *); 8192882Simpvoid remopt(char *, const char *); 8292882Simpvoid prmount(struct statfs *); 8392882Simpvoid putfsent(const struct statfs *); 8492882Simpvoid usage(void); 8592882Simpchar *flags2opts(int); 861558Srgrimes 8737425Scharnier/* Map from mount options to printable formats. */ 881558Srgrimesstatic struct opt { 891558Srgrimes int o_opt; 901558Srgrimes const char *o_name; 911558Srgrimes} optnames[] = { 921558Srgrimes { MNT_ASYNC, "asynchronous" }, 931558Srgrimes { MNT_EXPORTED, "NFS exported" }, 941558Srgrimes { MNT_LOCAL, "local" }, 9518007Sdg { MNT_NOATIME, "noatime" }, 961558Srgrimes { MNT_NOEXEC, "noexec" }, 971558Srgrimes { MNT_NOSUID, "nosuid" }, 9835105Swosch { MNT_NOSYMFOLLOW, "nosymfollow" }, 991558Srgrimes { MNT_QUOTA, "with quotas" }, 1001558Srgrimes { MNT_RDONLY, "read-only" }, 1011558Srgrimes { MNT_SYNCHRONOUS, "synchronous" }, 1021558Srgrimes { MNT_UNION, "union" }, 10329890Skato { MNT_NOCLUSTERR, "noclusterr" }, 10429890Skato { MNT_NOCLUSTERW, "noclusterw" }, 10531144Sjulian { MNT_SUIDDIR, "suiddir" }, 10634266Sjulian { MNT_SOFTDEP, "soft-updates" }, 107101205Srwatson { MNT_MULTILABEL, "multilabel" }, 108105118Srwatson { MNT_ACLS, "acls" }, 10946619Sjkoshy { 0, NULL } 1101558Srgrimes}; 1111558Srgrimes 11228671Ssteve/* 11328671Ssteve * List of VFS types that can be remounted without becoming mounted on top 11428671Ssteve * of each other. 11528671Ssteve * XXX Is this list correct? 11628671Ssteve */ 11728671Sstevestatic const char * 11828671Ssteveremountable_fs_names[] = { 11969056Sphantom "ufs", "ffs", "ext2fs", 12028671Ssteve 0 12128671Ssteve}; 12228671Ssteve 123158400Smaximstatic const char userquotaeq[] = "userquota="; 124158400Smaximstatic const char groupquotaeq[] = "groupquota="; 125158400Smaxim 126152344Srodrigcstatic int 127152344Srodrigcuse_mountprog(const char *vfstype) 128152344Srodrigc{ 129152344Srodrigc /* XXX: We need to get away from implementing external mount 130152344Srodrigc * programs for every filesystem, and move towards having 131152344Srodrigc * each filesystem properly implement the nmount() system call. 132152344Srodrigc */ 133152344Srodrigc unsigned int i; 134152344Srodrigc const char *fs[] = { 135152778Savatar "cd9660", "mfs", "msdosfs", "nfs", "nfs4", "ntfs", 136153360Srodrigc "nwfs", "nullfs", "portalfs", "smbfs", "udf", "umapfs", 137152344Srodrigc "unionfs", 138152344Srodrigc NULL 139152344Srodrigc }; 140152344Srodrigc 141159473Sjmallett for (i = 0; fs[i] != NULL; ++i) { 142152344Srodrigc if (strcmp(vfstype, fs[i]) == 0) 143159473Sjmallett return (1); 144152344Srodrigc } 145152344Srodrigc 146159473Sjmallett return (0); 147152344Srodrigc} 148152344Srodrigc 149152344Srodrigcstatic int 150159473Sjmallettexec_mountprog(const char *name, const char *execname, char *const argv[]) 151152344Srodrigc{ 152152344Srodrigc pid_t pid; 153152344Srodrigc int status; 154152344Srodrigc 155152344Srodrigc switch (pid = fork()) { 156152344Srodrigc case -1: /* Error. */ 157152344Srodrigc warn("fork"); 158152344Srodrigc exit (1); 159152344Srodrigc case 0: /* Child. */ 160152344Srodrigc /* Go find an executable. */ 161152344Srodrigc execvP(execname, _PATH_SYSPATH, argv); 162152344Srodrigc if (errno == ENOENT) { 163152344Srodrigc warn("exec %s not found in %s", execname, 164152344Srodrigc _PATH_SYSPATH); 165152344Srodrigc } 166152344Srodrigc exit(1); 167152344Srodrigc default: /* Parent. */ 168152344Srodrigc if (waitpid(pid, &status, 0) < 0) { 169152344Srodrigc warn("waitpid"); 170152344Srodrigc return (1); 171152344Srodrigc } 172152344Srodrigc 173152344Srodrigc if (WIFEXITED(status)) { 174152344Srodrigc if (WEXITSTATUS(status) != 0) 175152344Srodrigc return (WEXITSTATUS(status)); 176152344Srodrigc } else if (WIFSIGNALED(status)) { 177152344Srodrigc warnx("%s: %s", name, sys_siglist[WTERMSIG(status)]); 178152344Srodrigc return (1); 179152344Srodrigc } 180152344Srodrigc break; 181152344Srodrigc } 182152344Srodrigc 183152344Srodrigc return (0); 184152344Srodrigc} 185152344Srodrigc 186163672Srustatic int 187163672Sruspecified_ro(const char *arg) 188163671Sru{ 189163671Sru char *optbuf, *opt; 190163671Sru int ret = 0; 191163671Sru 192163671Sru optbuf = strdup(arg); 193163671Sru if (optbuf == NULL) 194163671Sru err(1, NULL); 195163671Sru 196163671Sru for (opt = optbuf; (opt = strtok(opt, ",")) != NULL; opt = NULL) { 197163671Sru if (strcmp(opt, "ro") == 0) { 198163671Sru ret = 1; 199163671Sru break; 200163671Sru } 201163671Sru } 202163671Sru free(optbuf); 203163671Sru return (ret); 204163671Sru} 205163671Sru 2061558Srgrimesint 207151042Srodrigcmain(int argc, char *argv[]) 2081558Srgrimes{ 20923678Speter const char *mntfromname, **vfslist, *vfstype; 2101558Srgrimes struct fstab *fs; 2111558Srgrimes struct statfs *mntbuf; 2121558Srgrimes FILE *mountdfp; 2131558Srgrimes pid_t pid; 214163671Sru int all, ch, i, init_flags, late, mntsize, rval, have_fstab, ro; 21595289Smux char *cp, *ep, *options; 2161558Srgrimes 217160303Sdes all = init_flags = late = 0; 218163671Sru ro = 0; 219163671Sru options = NULL; 2201558Srgrimes vfslist = NULL; 2211558Srgrimes vfstype = "ufs"; 222163672Sru while ((ch = getopt(argc, argv, "adF:flo:prt:uvw")) != -1) 2231558Srgrimes switch (ch) { 2241558Srgrimes case 'a': 2251558Srgrimes all = 1; 2261558Srgrimes break; 2271558Srgrimes case 'd': 2281558Srgrimes debug = 1; 2291558Srgrimes break; 230113220Smdodd case 'F': 231113220Smdodd setfstab(optarg); 232113220Smdodd break; 2331558Srgrimes case 'f': 2341558Srgrimes init_flags |= MNT_FORCE; 2351558Srgrimes break; 236160303Sdes case 'l': 237160303Sdes late = 1; 238160303Sdes break; 2391558Srgrimes case 'o': 240163671Sru if (*optarg) { 241163671Sru options = catopt(options, optarg); 242163671Sru if (specified_ro(optarg)) 243163671Sru ro = 1; 244163671Sru } 2451558Srgrimes break; 24623805Sbde case 'p': 24723805Sbde fstab_style = 1; 24823805Sbde verbose = 1; 24923805Sbde break; 2501558Srgrimes case 'r': 25176198Sdd options = catopt(options, "ro"); 252163671Sru ro = 1; 2531558Srgrimes break; 2541558Srgrimes case 't': 2551558Srgrimes if (vfslist != NULL) 25637425Scharnier errx(1, "only one -t option may be specified"); 2571558Srgrimes vfslist = makevfslist(optarg); 2581558Srgrimes vfstype = optarg; 2591558Srgrimes break; 2601558Srgrimes case 'u': 2611558Srgrimes init_flags |= MNT_UPDATE; 2621558Srgrimes break; 2631558Srgrimes case 'v': 2641558Srgrimes verbose = 1; 2651558Srgrimes break; 2661558Srgrimes case 'w': 26776198Sdd options = catopt(options, "noro"); 2681558Srgrimes break; 2691558Srgrimes case '?': 2701558Srgrimes default: 2711558Srgrimes usage(); 2721558Srgrimes /* NOTREACHED */ 2731558Srgrimes } 2741558Srgrimes argc -= optind; 2751558Srgrimes argv += optind; 2761558Srgrimes 2771558Srgrimes#define BADTYPE(type) \ 2781558Srgrimes (strcmp(type, FSTAB_RO) && \ 2791558Srgrimes strcmp(type, FSTAB_RW) && strcmp(type, FSTAB_RQ)) 2801558Srgrimes 281163671Sru if ((init_flags & MNT_UPDATE) && (ro == 0)) 282163671Sru options = catopt(options, "noro"); 283163671Sru 2841558Srgrimes rval = 0; 2851558Srgrimes switch (argc) { 2861558Srgrimes case 0: 28728671Ssteve if ((mntsize = getmntinfo(&mntbuf, MNT_NOWAIT)) == 0) 28828671Ssteve err(1, "getmntinfo"); 28928671Ssteve if (all) { 2901558Srgrimes while ((fs = getfsent()) != NULL) { 2911558Srgrimes if (BADTYPE(fs->fs_type)) 2921558Srgrimes continue; 29323678Speter if (checkvfsname(fs->fs_vfstype, vfslist)) 2941558Srgrimes continue; 29523678Speter if (hasopt(fs->fs_mntops, "noauto")) 29610288Sdg continue; 297160303Sdes if (hasopt(fs->fs_mntops, "late") && !late) 298160303Sdes continue; 29944811Sbde if (!(init_flags & MNT_UPDATE) && 30044811Sbde ismounted(fs, mntbuf, mntsize)) 30128671Ssteve continue; 302125194Sguido options = update_options(options, fs->fs_mntops, 303125194Sguido mntbuf->f_flags); 3041558Srgrimes if (mountfs(fs->fs_vfstype, fs->fs_spec, 30523805Sbde fs->fs_file, init_flags, options, 30623805Sbde fs->fs_mntops)) 30723805Sbde rval = 1; 3081558Srgrimes } 30928671Ssteve } else if (fstab_style) { 31017243Sjkh for (i = 0; i < mntsize; i++) { 31123678Speter if (checkvfsname(mntbuf[i].f_fstypename, vfslist)) 31217243Sjkh continue; 31323805Sbde putfsent(&mntbuf[i]); 31417243Sjkh } 31523805Sbde } else { 3161558Srgrimes for (i = 0; i < mntsize; i++) { 31723805Sbde if (checkvfsname(mntbuf[i].f_fstypename, 31823805Sbde vfslist)) 3191558Srgrimes continue; 32023678Speter prmount(&mntbuf[i]); 3211558Srgrimes } 3221558Srgrimes } 3231558Srgrimes exit(rval); 3241558Srgrimes case 1: 3251558Srgrimes if (vfslist != NULL) 3261558Srgrimes usage(); 3271558Srgrimes 328124201Sanholt rmslashes(*argv, *argv); 3291558Srgrimes if (init_flags & MNT_UPDATE) { 33052678Sgreen mntfromname = NULL; 33152678Sgreen have_fstab = 0; 3321558Srgrimes if ((mntbuf = getmntpt(*argv)) == NULL) 33352678Sgreen errx(1, "not currently mounted %s", *argv); 33452678Sgreen /* 33552678Sgreen * Only get the mntflags from fstab if both mntpoint 33652678Sgreen * and mntspec are identical. Also handle the special 33752678Sgreen * case where just '/' is mounted and 'spec' is not 33852678Sgreen * identical with the one from fstab ('/dev' is missing 33952678Sgreen * in the spec-string at boot-time). 34052678Sgreen */ 34146619Sjkoshy if ((fs = getfsfile(mntbuf->f_mntonname)) != NULL) { 34252678Sgreen if (strcmp(fs->fs_spec, 34352678Sgreen mntbuf->f_mntfromname) == 0 && 34452678Sgreen strcmp(fs->fs_file, 34552678Sgreen mntbuf->f_mntonname) == 0) { 34652678Sgreen have_fstab = 1; 34752678Sgreen mntfromname = mntbuf->f_mntfromname; 34852678Sgreen } else if (argv[0][0] == '/' && 34952678Sgreen argv[0][1] == '\0') { 35052678Sgreen fs = getfsfile("/"); 35152678Sgreen have_fstab = 1; 35252678Sgreen mntfromname = fs->fs_spec; 35352678Sgreen } 35452678Sgreen } 35552678Sgreen if (have_fstab) { 35646619Sjkoshy options = update_options(options, fs->fs_mntops, 35746619Sjkoshy mntbuf->f_flags); 35846619Sjkoshy } else { 35923678Speter mntfromname = mntbuf->f_mntfromname; 36046619Sjkoshy options = update_options(options, NULL, 36146619Sjkoshy mntbuf->f_flags); 36246619Sjkoshy } 36323678Speter rval = mountfs(mntbuf->f_fstypename, mntfromname, 36423678Speter mntbuf->f_mntonname, init_flags, options, 0); 36523678Speter break; 3661558Srgrimes } 36723678Speter if ((fs = getfsfile(*argv)) == NULL && 36823678Speter (fs = getfsspec(*argv)) == NULL) 369102231Strhodes errx(1, "%s: unknown special file or file system", 37023678Speter *argv); 37123678Speter if (BADTYPE(fs->fs_type)) 372102231Strhodes errx(1, "%s has unknown file system type", 37323678Speter *argv); 37423678Speter rval = mountfs(fs->fs_vfstype, fs->fs_spec, fs->fs_file, 37523678Speter init_flags, options, fs->fs_mntops); 3761558Srgrimes break; 3771558Srgrimes case 2: 3781558Srgrimes /* 37952678Sgreen * If -t flag has not been specified, the path cannot be 38095289Smux * found, spec contains either a ':' or a '@', then assume 381102231Strhodes * that an NFS file system is being specified ala Sun. 38295289Smux * Check if the hostname contains only allowed characters 38395289Smux * to reduce false positives. IPv6 addresses containing 38495289Smux * ':' will be correctly parsed only if the separator is '@'. 38595289Smux * The definition of a valid hostname is taken from RFC 1034. 3861558Srgrimes */ 387123162Siedowse if (vfslist == NULL && ((ep = strchr(argv[0], '@')) != NULL || 388123162Siedowse (ep = strchr(argv[0], ':')) != NULL)) { 38995318Smux if (*ep == '@') { 39095318Smux cp = ep + 1; 39195318Smux ep = cp + strlen(cp); 39295318Smux } else 39395318Smux cp = argv[0]; 39495289Smux while (cp != ep) { 39595289Smux if (!isdigit(*cp) && !isalpha(*cp) && 39695289Smux *cp != '.' && *cp != '-' && *cp != ':') 39795289Smux break; 39895289Smux cp++; 39995289Smux } 40095289Smux if (cp == ep) 40195289Smux vfstype = "nfs"; 40295289Smux } 4031558Srgrimes rval = mountfs(vfstype, 4041558Srgrimes argv[0], argv[1], init_flags, options, NULL); 4051558Srgrimes break; 4061558Srgrimes default: 4071558Srgrimes usage(); 4081558Srgrimes /* NOTREACHED */ 4091558Srgrimes } 4101558Srgrimes 4111558Srgrimes /* 4121558Srgrimes * If the mount was successfully, and done by root, tell mountd the 4131558Srgrimes * good news. Pid checks are probably unnecessary, but don't hurt. 4141558Srgrimes */ 4151558Srgrimes if (rval == 0 && getuid() == 0 && 4161558Srgrimes (mountdfp = fopen(_PATH_MOUNTDPID, "r")) != NULL) { 41728671Ssteve if (fscanf(mountdfp, "%d", &pid) == 1 && 4181558Srgrimes pid > 0 && kill(pid, SIGHUP) == -1 && errno != ESRCH) 4191558Srgrimes err(1, "signal mountd"); 4201558Srgrimes (void)fclose(mountdfp); 4211558Srgrimes } 4221558Srgrimes 4231558Srgrimes exit(rval); 4241558Srgrimes} 4251558Srgrimes 4261558Srgrimesint 427151042Srodrigcismounted(struct fstab *fs, struct statfs *mntbuf, int mntsize) 42828671Ssteve{ 429154512Spjd char realfsfile[PATH_MAX]; 43028671Ssteve int i; 43128671Ssteve 43228671Ssteve if (fs->fs_file[0] == '/' && fs->fs_file[1] == '\0') 433102231Strhodes /* the root file system can always be remounted */ 43428671Ssteve return (0); 43528671Ssteve 436154512Spjd /* The user may have specified a symlink in fstab, resolve the path */ 437154512Spjd if (realpath(fs->fs_file, realfsfile) == NULL) { 438154512Spjd /* Cannot resolve the path, use original one */ 439154512Spjd strlcpy(realfsfile, fs->fs_file, sizeof(realfsfile)); 440154512Spjd } 441154512Spjd 44228671Ssteve for (i = mntsize - 1; i >= 0; --i) 443154512Spjd if (strcmp(realfsfile, mntbuf[i].f_mntonname) == 0 && 44428671Ssteve (!isremountable(fs->fs_vfstype) || 44528671Ssteve strcmp(fs->fs_spec, mntbuf[i].f_mntfromname) == 0)) 44628671Ssteve return (1); 44728671Ssteve return (0); 44828671Ssteve} 44928671Ssteve 45028671Ssteveint 451151042Srodrigcisremountable(const char *vfsname) 45228671Ssteve{ 45328671Ssteve const char **cp; 45428671Ssteve 45528671Ssteve for (cp = remountable_fs_names; *cp; cp++) 45628671Ssteve if (strcmp(*cp, vfsname) == 0) 45728671Ssteve return (1); 45828671Ssteve return (0); 45928671Ssteve} 46028671Ssteve 46128671Ssteveint 462151042Srodrigchasopt(const char *mntopts, const char *option) 46323678Speter{ 46423678Speter int negative, found; 46523678Speter char *opt, *optbuf; 46623678Speter 46723678Speter if (option[0] == 'n' && option[1] == 'o') { 46823678Speter negative = 1; 46923678Speter option += 2; 47023678Speter } else 47123678Speter negative = 0; 47223678Speter optbuf = strdup(mntopts); 47323678Speter found = 0; 47423678Speter for (opt = optbuf; (opt = strtok(opt, ",")) != NULL; opt = NULL) { 47523678Speter if (opt[0] == 'n' && opt[1] == 'o') { 47623678Speter if (!strcasecmp(opt + 2, option)) 47723678Speter found = negative; 47823678Speter } else if (!strcasecmp(opt, option)) 47923678Speter found = !negative; 48023678Speter } 48123678Speter free(optbuf); 48223678Speter return (found); 48323678Speter} 48423678Speter 48523678Speterint 486151042Srodrigcmountfs(const char *vfstype, const char *spec, const char *name, int flags, 487151042Srodrigc const char *options, const char *mntopts) 4881558Srgrimes{ 489152344Srodrigc char *argv[100]; 4901558Srgrimes struct statfs sf; 491152344Srodrigc int argc, i, ret; 492118580Simp char *optbuf, execname[PATH_MAX], mntpath[PATH_MAX]; 4931558Srgrimes 49452055Sphk /* resolve the mountpoint with realpath(3) */ 49552055Sphk (void)checkpath(name, mntpath); 4961558Srgrimes name = mntpath; 4971558Srgrimes 49823678Speter if (mntopts == NULL) 49923678Speter mntopts = ""; 5001558Srgrimes optbuf = catopt(strdup(mntopts), options); 5011558Srgrimes 5021558Srgrimes if (strcmp(name, "/") == 0) 5031558Srgrimes flags |= MNT_UPDATE; 5041558Srgrimes if (flags & MNT_FORCE) 5051558Srgrimes optbuf = catopt(optbuf, "force"); 5061558Srgrimes if (flags & MNT_RDONLY) 5071558Srgrimes optbuf = catopt(optbuf, "ro"); 5081558Srgrimes /* 5091558Srgrimes * XXX 5101558Srgrimes * The mount_mfs (newfs) command uses -o to select the 51137425Scharnier * optimization mode. We don't pass the default "-o rw" 5121558Srgrimes * for that reason. 5131558Srgrimes */ 5141558Srgrimes if (flags & MNT_UPDATE) 5151558Srgrimes optbuf = catopt(optbuf, "update"); 5161558Srgrimes 51777577Sru /* Compatibility glue. */ 51877577Sru if (strcmp(vfstype, "msdos") == 0) 51977577Sru vfstype = "msdosfs"; 52077577Sru 521144133Scperciva /* Construct the name of the appropriate mount command */ 522144133Scperciva (void)snprintf(execname, sizeof(execname), "mount_%s", vfstype); 523144133Scperciva 5241558Srgrimes argc = 0; 525144133Scperciva argv[argc++] = execname; 5261558Srgrimes mangle(optbuf, &argc, argv); 527152344Srodrigc argv[argc++] = strdup(spec); 528152344Srodrigc argv[argc++] = strdup(name); 5291558Srgrimes argv[argc] = NULL; 5301558Srgrimes 5311558Srgrimes if (debug) { 5321558Srgrimes (void)printf("exec: mount_%s", vfstype); 5331558Srgrimes for (i = 1; i < argc; i++) 5341558Srgrimes (void)printf(" %s", argv[i]); 5351558Srgrimes (void)printf("\n"); 5361558Srgrimes return (0); 5371558Srgrimes } 5381558Srgrimes 539152668Srodrigc if (use_mountprog(vfstype)) { 540152344Srodrigc ret = exec_mountprog(name, execname, argv); 541152344Srodrigc } else { 542152344Srodrigc ret = mount_fs(vfstype, argc, argv); 543152344Srodrigc } 5441558Srgrimes 545152344Srodrigc free(optbuf); 5461558Srgrimes 547152344Srodrigc if (verbose) { 548152344Srodrigc if (statfs(name, &sf) < 0) { 549152344Srodrigc warn("statfs %s", name); 5501558Srgrimes return (1); 5511558Srgrimes } 552152344Srodrigc if (fstab_style) 553152344Srodrigc putfsent(&sf); 554152344Srodrigc else 555152344Srodrigc prmount(&sf); 5561558Srgrimes } 5571558Srgrimes 5581558Srgrimes return (0); 5591558Srgrimes} 5601558Srgrimes 5611558Srgrimesvoid 562151042Srodrigcprmount(struct statfs *sfp) 56323678Speter{ 564151043Srodrigc int flags; 565151043Srodrigc unsigned int i; 5661558Srgrimes struct opt *o; 56723678Speter struct passwd *pw; 5681558Srgrimes 56952036Sn_hibma (void)printf("%s on %s (%s", sfp->f_mntfromname, sfp->f_mntonname, 57052036Sn_hibma sfp->f_fstypename); 5711558Srgrimes 57223678Speter flags = sfp->f_flags & MNT_VISFLAGMASK; 57352036Sn_hibma for (o = optnames; flags && o->o_opt; o++) 5741558Srgrimes if (flags & o->o_opt) { 57552036Sn_hibma (void)printf(", %s", o->o_name); 5761558Srgrimes flags &= ~o->o_opt; 5771558Srgrimes } 578125339Spjd /* 579125339Spjd * Inform when file system is mounted by an unprivileged user 580125339Spjd * or privileged non-root user. 581125339Spjd */ 582125365Snectar if ((flags & MNT_USER) != 0 || sfp->f_owner != 0) { 58352036Sn_hibma (void)printf(", mounted by "); 58423678Speter if ((pw = getpwuid(sfp->f_owner)) != NULL) 58523678Speter (void)printf("%s", pw->pw_name); 58623678Speter else 58723678Speter (void)printf("%d", sfp->f_owner); 58823678Speter } 58965023Ssheldonh if (verbose) { 59065023Ssheldonh if (sfp->f_syncwrites != 0 || sfp->f_asyncwrites != 0) 591123242Siedowse (void)printf(", writes: sync %ju async %ju", 592123242Siedowse (uintmax_t)sfp->f_syncwrites, 593123242Siedowse (uintmax_t)sfp->f_asyncwrites); 59465023Ssheldonh if (sfp->f_syncreads != 0 || sfp->f_asyncreads != 0) 595123242Siedowse (void)printf(", reads: sync %ju async %ju", 596123242Siedowse (uintmax_t)sfp->f_syncreads, 597123242Siedowse (uintmax_t)sfp->f_asyncreads); 598123162Siedowse if (sfp->f_fsid.val[0] != 0 || sfp->f_fsid.val[1] != 0) { 599123162Siedowse printf(", fsid "); 600123162Siedowse for (i = 0; i < sizeof(sfp->f_fsid); i++) 601123162Siedowse printf("%02x", ((u_char *)&sfp->f_fsid)[i]); 602123162Siedowse } 60365023Ssheldonh } 60452036Sn_hibma (void)printf(")\n"); 6051558Srgrimes} 6061558Srgrimes 6071558Srgrimesstruct statfs * 608151042Srodrigcgetmntpt(const char *name) 6091558Srgrimes{ 6101558Srgrimes struct statfs *mntbuf; 6111558Srgrimes int i, mntsize; 6121558Srgrimes 6131558Srgrimes mntsize = getmntinfo(&mntbuf, MNT_NOWAIT); 61452678Sgreen for (i = mntsize - 1; i >= 0; i--) { 6151558Srgrimes if (strcmp(mntbuf[i].f_mntfromname, name) == 0 || 6161558Srgrimes strcmp(mntbuf[i].f_mntonname, name) == 0) 6171558Srgrimes return (&mntbuf[i]); 61852678Sgreen } 6191558Srgrimes return (NULL); 6201558Srgrimes} 6211558Srgrimes 6221558Srgrimeschar * 623151042Srodrigccatopt(char *s0, const char *s1) 6241558Srgrimes{ 6251558Srgrimes size_t i; 6261558Srgrimes char *cp; 6271558Srgrimes 62846619Sjkoshy if (s1 == NULL || *s1 == '\0') 629159473Sjmallett return (s0); 63046619Sjkoshy 6311558Srgrimes if (s0 && *s0) { 6321558Srgrimes i = strlen(s0) + strlen(s1) + 1 + 1; 6331558Srgrimes if ((cp = malloc(i)) == NULL) 63437425Scharnier errx(1, "malloc failed"); 6351558Srgrimes (void)snprintf(cp, i, "%s,%s", s0, s1); 6361558Srgrimes } else 6371558Srgrimes cp = strdup(s1); 6381558Srgrimes 6391558Srgrimes if (s0) 6401558Srgrimes free(s0); 6411558Srgrimes return (cp); 6421558Srgrimes} 6431558Srgrimes 6441558Srgrimesvoid 645159473Sjmallettmangle(char *options, int *argcp, char *argv[]) 6461558Srgrimes{ 6471558Srgrimes char *p, *s; 6481558Srgrimes int argc; 6491558Srgrimes 6501558Srgrimes argc = *argcp; 6511558Srgrimes for (s = options; (p = strsep(&s, ",")) != NULL;) 65246619Sjkoshy if (*p != '\0') { 653152465Srodrigc if (strcmp(p, "noauto") == 0) { 654152465Srodrigc /* 655152465Srodrigc * Do not pass noauto option to nmount(). 656152465Srodrigc * or external mount program. noauto is 657152465Srodrigc * only used to prevent mounting a filesystem 658152465Srodrigc * when 'mount -a' is specified, and is 659152465Srodrigc * not a real mount option. 660152465Srodrigc */ 661152465Srodrigc continue; 662160303Sdes } else if (strcmp(p, "late") == 0) { 663160303Sdes /* 664160303Sdes * "late" is used to prevent certain file 665160303Sdes * systems from being mounted before late 666160303Sdes * in the boot cycle; for instance, 667160303Sdes * loopback NFS mounts can't be mounted 668160303Sdes * before mountd starts. 669160303Sdes */ 670160303Sdes continue; 671152732Srodrigc } else if (strcmp(p, "userquota") == 0) { 672152732Srodrigc continue; 673158400Smaxim } else if (strncmp(p, userquotaeq, 674158400Smaxim sizeof(userquotaeq) - 1) == 0) { 675158400Smaxim continue; 676152732Srodrigc } else if (strcmp(p, "groupquota") == 0) { 677152732Srodrigc continue; 678158400Smaxim } else if (strncmp(p, groupquotaeq, 679158400Smaxim sizeof(groupquotaeq) - 1) == 0) { 680158400Smaxim continue; 681152465Srodrigc } else if (*p == '-') { 6821558Srgrimes argv[argc++] = p; 6831558Srgrimes p = strchr(p, '='); 684123268Strhodes if (p != NULL) { 6851558Srgrimes *p = '\0'; 6861558Srgrimes argv[argc++] = p+1; 6871558Srgrimes } 688153038Srodrigc } else { 689152344Srodrigc argv[argc++] = strdup("-o"); 6901558Srgrimes argv[argc++] = p; 6911558Srgrimes } 69246619Sjkoshy } 6931558Srgrimes 6941558Srgrimes *argcp = argc; 6951558Srgrimes} 6961558Srgrimes 69746619Sjkoshy 69846619Sjkoshychar * 699159473Sjmallettupdate_options(char *opts, char *fstab, int curflags) 70046619Sjkoshy{ 70146619Sjkoshy char *o, *p; 70246619Sjkoshy char *cur; 70346619Sjkoshy char *expopt, *newopt, *tmpopt; 70446619Sjkoshy 70546619Sjkoshy if (opts == NULL) 706159473Sjmallett return (strdup("")); 70746619Sjkoshy 70846619Sjkoshy /* remove meta options from list */ 70946619Sjkoshy remopt(fstab, MOUNT_META_OPTION_FSTAB); 71046619Sjkoshy remopt(fstab, MOUNT_META_OPTION_CURRENT); 71146619Sjkoshy cur = flags2opts(curflags); 71246619Sjkoshy 71346619Sjkoshy /* 71446619Sjkoshy * Expand all meta-options passed to us first. 71546619Sjkoshy */ 71646619Sjkoshy expopt = NULL; 71746619Sjkoshy for (p = opts; (o = strsep(&p, ",")) != NULL;) { 71846619Sjkoshy if (strcmp(MOUNT_META_OPTION_FSTAB, o) == 0) 71946619Sjkoshy expopt = catopt(expopt, fstab); 72046619Sjkoshy else if (strcmp(MOUNT_META_OPTION_CURRENT, o) == 0) 72146619Sjkoshy expopt = catopt(expopt, cur); 72246619Sjkoshy else 72346619Sjkoshy expopt = catopt(expopt, o); 72446619Sjkoshy } 72546619Sjkoshy free(cur); 72646619Sjkoshy free(opts); 72746619Sjkoshy 72846619Sjkoshy /* 72946619Sjkoshy * Remove previous contradictory arguments. Given option "foo" we 73046619Sjkoshy * remove all the "nofoo" options. Given "nofoo" we remove "nonofoo" 73146619Sjkoshy * and "foo" - so we can deal with possible options like "notice". 73246619Sjkoshy */ 73346619Sjkoshy newopt = NULL; 73446619Sjkoshy for (p = expopt; (o = strsep(&p, ",")) != NULL;) { 73546619Sjkoshy if ((tmpopt = malloc( strlen(o) + 2 + 1 )) == NULL) 73646619Sjkoshy errx(1, "malloc failed"); 737125933Sgrog 73846619Sjkoshy strcpy(tmpopt, "no"); 73946619Sjkoshy strcat(tmpopt, o); 74046619Sjkoshy remopt(newopt, tmpopt); 74146619Sjkoshy free(tmpopt); 74246619Sjkoshy 74346619Sjkoshy if (strncmp("no", o, 2) == 0) 74446619Sjkoshy remopt(newopt, o+2); 74546619Sjkoshy 74646619Sjkoshy newopt = catopt(newopt, o); 74746619Sjkoshy } 74846619Sjkoshy free(expopt); 74946619Sjkoshy 750159473Sjmallett return (newopt); 75146619Sjkoshy} 75246619Sjkoshy 7531558Srgrimesvoid 754159473Sjmallettremopt(char *string, const char *opt) 75546619Sjkoshy{ 75646619Sjkoshy char *o, *p, *r; 75746619Sjkoshy 75846619Sjkoshy if (string == NULL || *string == '\0' || opt == NULL || *opt == '\0') 75946619Sjkoshy return; 76046619Sjkoshy 76146619Sjkoshy r = string; 76246619Sjkoshy 76346619Sjkoshy for (p = string; (o = strsep(&p, ",")) != NULL;) { 76446619Sjkoshy if (strcmp(opt, o) != 0) { 76546619Sjkoshy if (*r == ',' && *o != '\0') 76646619Sjkoshy r++; 76746619Sjkoshy while ((*r++ = *o++) != '\0') 76846619Sjkoshy ; 76946619Sjkoshy *--r = ','; 77046619Sjkoshy } 77146619Sjkoshy } 77246619Sjkoshy *r = '\0'; 77346619Sjkoshy} 77446619Sjkoshy 77546619Sjkoshyvoid 776159473Sjmallettusage(void) 7771558Srgrimes{ 7781558Srgrimes 77937425Scharnier (void)fprintf(stderr, "%s\n%s\n%s\n", 780160303Sdes"usage: mount [-adflpruvw] [-F fstab] [-o options] [-t ufs | external_type]", 781141611Sru" mount [-dfpruvw] special | node", 782141611Sru" mount [-dfpruvw] [-o options] [-t ufs | external_type] special node"); 7831558Srgrimes exit(1); 7841558Srgrimes} 78517243Sjkh 78617243Sjkhvoid 787159473Sjmallettputfsent(const struct statfs *ent) 78817243Sjkh{ 78923805Sbde struct fstab *fst; 79046619Sjkoshy char *opts; 791125933Sgrog 79246619Sjkoshy opts = flags2opts(ent->f_flags); 793156229Skeramida 794156229Skeramida /* 795156229Skeramida * "rw" is not a real mount option; this is why we print NULL as "rw" 796156229Skeramida * if opts is still NULL here. 797156229Skeramida */ 79823805Sbde printf("%s\t%s\t%s %s", ent->f_mntfromname, ent->f_mntonname, 799156229Skeramida ent->f_fstypename, opts ? opts : "rw"); 80046619Sjkoshy free(opts); 80117243Sjkh 80228671Ssteve if ((fst = getfsspec(ent->f_mntfromname))) 80323805Sbde printf("\t%u %u\n", fst->fs_freq, fst->fs_passno); 80428671Ssteve else if ((fst = getfsfile(ent->f_mntonname))) 80523805Sbde printf("\t%u %u\n", fst->fs_freq, fst->fs_passno); 80656038Sgreen else if (strcmp(ent->f_fstypename, "ufs") == 0) { 80756038Sgreen if (strcmp(ent->f_mntonname, "/") == 0) 80856038Sgreen printf("\t1 1\n"); 80956038Sgreen else 81056038Sgreen printf("\t2 2\n"); 81156038Sgreen } else 81223805Sbde printf("\t0 0\n"); 81317243Sjkh} 81446619Sjkoshy 81546619Sjkoshy 81646619Sjkoshychar * 817159473Sjmallettflags2opts(int flags) 81846619Sjkoshy{ 81946619Sjkoshy char *res; 82046619Sjkoshy 82146619Sjkoshy res = NULL; 82246619Sjkoshy 823155997Srodrigc if (flags & MNT_RDONLY) res = catopt(res, "ro"); 82446619Sjkoshy if (flags & MNT_SYNCHRONOUS) res = catopt(res, "sync"); 82546619Sjkoshy if (flags & MNT_NOEXEC) res = catopt(res, "noexec"); 82646619Sjkoshy if (flags & MNT_NOSUID) res = catopt(res, "nosuid"); 82746619Sjkoshy if (flags & MNT_UNION) res = catopt(res, "union"); 82846619Sjkoshy if (flags & MNT_ASYNC) res = catopt(res, "async"); 82946619Sjkoshy if (flags & MNT_NOATIME) res = catopt(res, "noatime"); 83046619Sjkoshy if (flags & MNT_NOCLUSTERR) res = catopt(res, "noclusterr"); 83146619Sjkoshy if (flags & MNT_NOCLUSTERW) res = catopt(res, "noclusterw"); 83246619Sjkoshy if (flags & MNT_NOSYMFOLLOW) res = catopt(res, "nosymfollow"); 83346619Sjkoshy if (flags & MNT_SUIDDIR) res = catopt(res, "suiddir"); 834101205Srwatson if (flags & MNT_MULTILABEL) res = catopt(res, "multilabel"); 835105118Srwatson if (flags & MNT_ACLS) res = catopt(res, "acls"); 83646619Sjkoshy 837159473Sjmallett return (res); 83846619Sjkoshy} 839