mount.c revision 159473
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 159473 2006-06-10 01:44:57Z jmallett $"; 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 1861558Srgrimesint 187151042Srodrigcmain(int argc, char *argv[]) 1881558Srgrimes{ 18923678Speter const char *mntfromname, **vfslist, *vfstype; 1901558Srgrimes struct fstab *fs; 1911558Srgrimes struct statfs *mntbuf; 1921558Srgrimes FILE *mountdfp; 1931558Srgrimes pid_t pid; 194159472Sjmallett int all, ch, i, init_flags, mntsize, rval, have_fstab; 19595289Smux char *cp, *ep, *options; 1961558Srgrimes 197159472Sjmallett options = strdup("noro"); 198159472Sjmallett if (options == NULL) 199159472Sjmallett errx(1, "malloc failed"); 200159472Sjmallett 2011558Srgrimes all = init_flags = 0; 2021558Srgrimes vfslist = NULL; 2031558Srgrimes vfstype = "ufs"; 204113220Smdodd while ((ch = getopt(argc, argv, "adF:fo:prwt:uv")) != -1) 2051558Srgrimes switch (ch) { 2061558Srgrimes case 'a': 2071558Srgrimes all = 1; 2081558Srgrimes break; 2091558Srgrimes case 'd': 2101558Srgrimes debug = 1; 2111558Srgrimes break; 212113220Smdodd case 'F': 213113220Smdodd setfstab(optarg); 214113220Smdodd break; 2151558Srgrimes case 'f': 2161558Srgrimes init_flags |= MNT_FORCE; 2171558Srgrimes break; 2181558Srgrimes case 'o': 219159472Sjmallett options = catopt(options, optarg); 2201558Srgrimes break; 22123805Sbde case 'p': 22223805Sbde fstab_style = 1; 22323805Sbde verbose = 1; 22423805Sbde break; 2251558Srgrimes case 'r': 22676198Sdd options = catopt(options, "ro"); 2271558Srgrimes break; 2281558Srgrimes case 't': 2291558Srgrimes if (vfslist != NULL) 23037425Scharnier errx(1, "only one -t option may be specified"); 2311558Srgrimes vfslist = makevfslist(optarg); 2321558Srgrimes vfstype = optarg; 2331558Srgrimes break; 2341558Srgrimes case 'u': 2351558Srgrimes init_flags |= MNT_UPDATE; 2361558Srgrimes break; 2371558Srgrimes case 'v': 2381558Srgrimes verbose = 1; 2391558Srgrimes break; 2401558Srgrimes case 'w': 24176198Sdd options = catopt(options, "noro"); 2421558Srgrimes break; 2431558Srgrimes case '?': 2441558Srgrimes default: 2451558Srgrimes usage(); 2461558Srgrimes /* NOTREACHED */ 2471558Srgrimes } 2481558Srgrimes argc -= optind; 2491558Srgrimes argv += optind; 2501558Srgrimes 2511558Srgrimes#define BADTYPE(type) \ 2521558Srgrimes (strcmp(type, FSTAB_RO) && \ 2531558Srgrimes strcmp(type, FSTAB_RW) && strcmp(type, FSTAB_RQ)) 2541558Srgrimes 2551558Srgrimes rval = 0; 2561558Srgrimes switch (argc) { 2571558Srgrimes case 0: 25828671Ssteve if ((mntsize = getmntinfo(&mntbuf, MNT_NOWAIT)) == 0) 25928671Ssteve err(1, "getmntinfo"); 26028671Ssteve if (all) { 2611558Srgrimes while ((fs = getfsent()) != NULL) { 2621558Srgrimes if (BADTYPE(fs->fs_type)) 2631558Srgrimes continue; 26423678Speter if (checkvfsname(fs->fs_vfstype, vfslist)) 2651558Srgrimes continue; 26623678Speter if (hasopt(fs->fs_mntops, "noauto")) 26710288Sdg continue; 26844811Sbde if (!(init_flags & MNT_UPDATE) && 26944811Sbde ismounted(fs, mntbuf, mntsize)) 27028671Ssteve continue; 271125194Sguido options = update_options(options, fs->fs_mntops, 272125194Sguido mntbuf->f_flags); 2731558Srgrimes if (mountfs(fs->fs_vfstype, fs->fs_spec, 27423805Sbde fs->fs_file, init_flags, options, 27523805Sbde fs->fs_mntops)) 27623805Sbde rval = 1; 2771558Srgrimes } 27828671Ssteve } else if (fstab_style) { 27917243Sjkh for (i = 0; i < mntsize; i++) { 28023678Speter if (checkvfsname(mntbuf[i].f_fstypename, vfslist)) 28117243Sjkh continue; 28223805Sbde putfsent(&mntbuf[i]); 28317243Sjkh } 28423805Sbde } else { 2851558Srgrimes for (i = 0; i < mntsize; i++) { 28623805Sbde if (checkvfsname(mntbuf[i].f_fstypename, 28723805Sbde vfslist)) 2881558Srgrimes continue; 28923678Speter prmount(&mntbuf[i]); 2901558Srgrimes } 2911558Srgrimes } 2921558Srgrimes exit(rval); 2931558Srgrimes case 1: 2941558Srgrimes if (vfslist != NULL) 2951558Srgrimes usage(); 2961558Srgrimes 297124201Sanholt rmslashes(*argv, *argv); 2981558Srgrimes if (init_flags & MNT_UPDATE) { 29952678Sgreen mntfromname = NULL; 30052678Sgreen have_fstab = 0; 3011558Srgrimes if ((mntbuf = getmntpt(*argv)) == NULL) 30252678Sgreen errx(1, "not currently mounted %s", *argv); 30352678Sgreen /* 30452678Sgreen * Only get the mntflags from fstab if both mntpoint 30552678Sgreen * and mntspec are identical. Also handle the special 30652678Sgreen * case where just '/' is mounted and 'spec' is not 30752678Sgreen * identical with the one from fstab ('/dev' is missing 30852678Sgreen * in the spec-string at boot-time). 30952678Sgreen */ 31046619Sjkoshy if ((fs = getfsfile(mntbuf->f_mntonname)) != NULL) { 31152678Sgreen if (strcmp(fs->fs_spec, 31252678Sgreen mntbuf->f_mntfromname) == 0 && 31352678Sgreen strcmp(fs->fs_file, 31452678Sgreen mntbuf->f_mntonname) == 0) { 31552678Sgreen have_fstab = 1; 31652678Sgreen mntfromname = mntbuf->f_mntfromname; 31752678Sgreen } else if (argv[0][0] == '/' && 31852678Sgreen argv[0][1] == '\0') { 31952678Sgreen fs = getfsfile("/"); 32052678Sgreen have_fstab = 1; 32152678Sgreen mntfromname = fs->fs_spec; 32252678Sgreen } 32352678Sgreen } 32452678Sgreen if (have_fstab) { 32546619Sjkoshy options = update_options(options, fs->fs_mntops, 32646619Sjkoshy mntbuf->f_flags); 32746619Sjkoshy } else { 32823678Speter mntfromname = mntbuf->f_mntfromname; 32946619Sjkoshy options = update_options(options, NULL, 33046619Sjkoshy mntbuf->f_flags); 33146619Sjkoshy } 33223678Speter rval = mountfs(mntbuf->f_fstypename, mntfromname, 33323678Speter mntbuf->f_mntonname, init_flags, options, 0); 33423678Speter break; 3351558Srgrimes } 33623678Speter if ((fs = getfsfile(*argv)) == NULL && 33723678Speter (fs = getfsspec(*argv)) == NULL) 338102231Strhodes errx(1, "%s: unknown special file or file system", 33923678Speter *argv); 34023678Speter if (BADTYPE(fs->fs_type)) 341102231Strhodes errx(1, "%s has unknown file system type", 34223678Speter *argv); 34323678Speter rval = mountfs(fs->fs_vfstype, fs->fs_spec, fs->fs_file, 34423678Speter init_flags, options, fs->fs_mntops); 3451558Srgrimes break; 3461558Srgrimes case 2: 3471558Srgrimes /* 34852678Sgreen * If -t flag has not been specified, the path cannot be 34995289Smux * found, spec contains either a ':' or a '@', then assume 350102231Strhodes * that an NFS file system is being specified ala Sun. 35195289Smux * Check if the hostname contains only allowed characters 35295289Smux * to reduce false positives. IPv6 addresses containing 35395289Smux * ':' will be correctly parsed only if the separator is '@'. 35495289Smux * The definition of a valid hostname is taken from RFC 1034. 3551558Srgrimes */ 356123162Siedowse if (vfslist == NULL && ((ep = strchr(argv[0], '@')) != NULL || 357123162Siedowse (ep = strchr(argv[0], ':')) != NULL)) { 35895318Smux if (*ep == '@') { 35995318Smux cp = ep + 1; 36095318Smux ep = cp + strlen(cp); 36195318Smux } else 36295318Smux cp = argv[0]; 36395289Smux while (cp != ep) { 36495289Smux if (!isdigit(*cp) && !isalpha(*cp) && 36595289Smux *cp != '.' && *cp != '-' && *cp != ':') 36695289Smux break; 36795289Smux cp++; 36895289Smux } 36995289Smux if (cp == ep) 37095289Smux vfstype = "nfs"; 37195289Smux } 3721558Srgrimes rval = mountfs(vfstype, 3731558Srgrimes argv[0], argv[1], init_flags, options, NULL); 3741558Srgrimes break; 3751558Srgrimes default: 3761558Srgrimes usage(); 3771558Srgrimes /* NOTREACHED */ 3781558Srgrimes } 3791558Srgrimes 3801558Srgrimes /* 3811558Srgrimes * If the mount was successfully, and done by root, tell mountd the 3821558Srgrimes * good news. Pid checks are probably unnecessary, but don't hurt. 3831558Srgrimes */ 3841558Srgrimes if (rval == 0 && getuid() == 0 && 3851558Srgrimes (mountdfp = fopen(_PATH_MOUNTDPID, "r")) != NULL) { 38628671Ssteve if (fscanf(mountdfp, "%d", &pid) == 1 && 3871558Srgrimes pid > 0 && kill(pid, SIGHUP) == -1 && errno != ESRCH) 3881558Srgrimes err(1, "signal mountd"); 3891558Srgrimes (void)fclose(mountdfp); 3901558Srgrimes } 3911558Srgrimes 3921558Srgrimes exit(rval); 3931558Srgrimes} 3941558Srgrimes 3951558Srgrimesint 396151042Srodrigcismounted(struct fstab *fs, struct statfs *mntbuf, int mntsize) 39728671Ssteve{ 398154512Spjd char realfsfile[PATH_MAX]; 39928671Ssteve int i; 40028671Ssteve 40128671Ssteve if (fs->fs_file[0] == '/' && fs->fs_file[1] == '\0') 402102231Strhodes /* the root file system can always be remounted */ 40328671Ssteve return (0); 40428671Ssteve 405154512Spjd /* The user may have specified a symlink in fstab, resolve the path */ 406154512Spjd if (realpath(fs->fs_file, realfsfile) == NULL) { 407154512Spjd /* Cannot resolve the path, use original one */ 408154512Spjd strlcpy(realfsfile, fs->fs_file, sizeof(realfsfile)); 409154512Spjd } 410154512Spjd 41128671Ssteve for (i = mntsize - 1; i >= 0; --i) 412154512Spjd if (strcmp(realfsfile, mntbuf[i].f_mntonname) == 0 && 41328671Ssteve (!isremountable(fs->fs_vfstype) || 41428671Ssteve strcmp(fs->fs_spec, mntbuf[i].f_mntfromname) == 0)) 41528671Ssteve return (1); 41628671Ssteve return (0); 41728671Ssteve} 41828671Ssteve 41928671Ssteveint 420151042Srodrigcisremountable(const char *vfsname) 42128671Ssteve{ 42228671Ssteve const char **cp; 42328671Ssteve 42428671Ssteve for (cp = remountable_fs_names; *cp; cp++) 42528671Ssteve if (strcmp(*cp, vfsname) == 0) 42628671Ssteve return (1); 42728671Ssteve return (0); 42828671Ssteve} 42928671Ssteve 43028671Ssteveint 431151042Srodrigchasopt(const char *mntopts, const char *option) 43223678Speter{ 43323678Speter int negative, found; 43423678Speter char *opt, *optbuf; 43523678Speter 43623678Speter if (option[0] == 'n' && option[1] == 'o') { 43723678Speter negative = 1; 43823678Speter option += 2; 43923678Speter } else 44023678Speter negative = 0; 44123678Speter optbuf = strdup(mntopts); 44223678Speter found = 0; 44323678Speter for (opt = optbuf; (opt = strtok(opt, ",")) != NULL; opt = NULL) { 44423678Speter if (opt[0] == 'n' && opt[1] == 'o') { 44523678Speter if (!strcasecmp(opt + 2, option)) 44623678Speter found = negative; 44723678Speter } else if (!strcasecmp(opt, option)) 44823678Speter found = !negative; 44923678Speter } 45023678Speter free(optbuf); 45123678Speter return (found); 45223678Speter} 45323678Speter 45423678Speterint 455151042Srodrigcmountfs(const char *vfstype, const char *spec, const char *name, int flags, 456151042Srodrigc const char *options, const char *mntopts) 4571558Srgrimes{ 458152344Srodrigc char *argv[100]; 4591558Srgrimes struct statfs sf; 460152344Srodrigc int argc, i, ret; 461118580Simp char *optbuf, execname[PATH_MAX], mntpath[PATH_MAX]; 4621558Srgrimes 46352055Sphk /* resolve the mountpoint with realpath(3) */ 46452055Sphk (void)checkpath(name, mntpath); 4651558Srgrimes name = mntpath; 4661558Srgrimes 46723678Speter if (mntopts == NULL) 46823678Speter mntopts = ""; 4691558Srgrimes optbuf = catopt(strdup(mntopts), options); 4701558Srgrimes 4711558Srgrimes if (strcmp(name, "/") == 0) 4721558Srgrimes flags |= MNT_UPDATE; 4731558Srgrimes if (flags & MNT_FORCE) 4741558Srgrimes optbuf = catopt(optbuf, "force"); 4751558Srgrimes if (flags & MNT_RDONLY) 4761558Srgrimes optbuf = catopt(optbuf, "ro"); 4771558Srgrimes /* 4781558Srgrimes * XXX 4791558Srgrimes * The mount_mfs (newfs) command uses -o to select the 48037425Scharnier * optimization mode. We don't pass the default "-o rw" 4811558Srgrimes * for that reason. 4821558Srgrimes */ 4831558Srgrimes if (flags & MNT_UPDATE) 4841558Srgrimes optbuf = catopt(optbuf, "update"); 4851558Srgrimes 48677577Sru /* Compatibility glue. */ 48777577Sru if (strcmp(vfstype, "msdos") == 0) 48877577Sru vfstype = "msdosfs"; 48977577Sru 490144133Scperciva /* Construct the name of the appropriate mount command */ 491144133Scperciva (void)snprintf(execname, sizeof(execname), "mount_%s", vfstype); 492144133Scperciva 4931558Srgrimes argc = 0; 494144133Scperciva argv[argc++] = execname; 4951558Srgrimes mangle(optbuf, &argc, argv); 496152344Srodrigc argv[argc++] = strdup(spec); 497152344Srodrigc argv[argc++] = strdup(name); 4981558Srgrimes argv[argc] = NULL; 4991558Srgrimes 5001558Srgrimes if (debug) { 5011558Srgrimes (void)printf("exec: mount_%s", vfstype); 5021558Srgrimes for (i = 1; i < argc; i++) 5031558Srgrimes (void)printf(" %s", argv[i]); 5041558Srgrimes (void)printf("\n"); 5051558Srgrimes return (0); 5061558Srgrimes } 5071558Srgrimes 508152668Srodrigc if (use_mountprog(vfstype)) { 509152344Srodrigc ret = exec_mountprog(name, execname, argv); 510152344Srodrigc } else { 511152344Srodrigc ret = mount_fs(vfstype, argc, argv); 512152344Srodrigc } 5131558Srgrimes 514152344Srodrigc free(optbuf); 5151558Srgrimes 516152344Srodrigc if (verbose) { 517152344Srodrigc if (statfs(name, &sf) < 0) { 518152344Srodrigc warn("statfs %s", name); 5191558Srgrimes return (1); 5201558Srgrimes } 521152344Srodrigc if (fstab_style) 522152344Srodrigc putfsent(&sf); 523152344Srodrigc else 524152344Srodrigc prmount(&sf); 5251558Srgrimes } 5261558Srgrimes 5271558Srgrimes return (0); 5281558Srgrimes} 5291558Srgrimes 5301558Srgrimesvoid 531151042Srodrigcprmount(struct statfs *sfp) 53223678Speter{ 533151043Srodrigc int flags; 534151043Srodrigc unsigned int i; 5351558Srgrimes struct opt *o; 53623678Speter struct passwd *pw; 5371558Srgrimes 53852036Sn_hibma (void)printf("%s on %s (%s", sfp->f_mntfromname, sfp->f_mntonname, 53952036Sn_hibma sfp->f_fstypename); 5401558Srgrimes 54123678Speter flags = sfp->f_flags & MNT_VISFLAGMASK; 54252036Sn_hibma for (o = optnames; flags && o->o_opt; o++) 5431558Srgrimes if (flags & o->o_opt) { 54452036Sn_hibma (void)printf(", %s", o->o_name); 5451558Srgrimes flags &= ~o->o_opt; 5461558Srgrimes } 547125339Spjd /* 548125339Spjd * Inform when file system is mounted by an unprivileged user 549125339Spjd * or privileged non-root user. 550125339Spjd */ 551125365Snectar if ((flags & MNT_USER) != 0 || sfp->f_owner != 0) { 55252036Sn_hibma (void)printf(", mounted by "); 55323678Speter if ((pw = getpwuid(sfp->f_owner)) != NULL) 55423678Speter (void)printf("%s", pw->pw_name); 55523678Speter else 55623678Speter (void)printf("%d", sfp->f_owner); 55723678Speter } 55865023Ssheldonh if (verbose) { 55965023Ssheldonh if (sfp->f_syncwrites != 0 || sfp->f_asyncwrites != 0) 560123242Siedowse (void)printf(", writes: sync %ju async %ju", 561123242Siedowse (uintmax_t)sfp->f_syncwrites, 562123242Siedowse (uintmax_t)sfp->f_asyncwrites); 56365023Ssheldonh if (sfp->f_syncreads != 0 || sfp->f_asyncreads != 0) 564123242Siedowse (void)printf(", reads: sync %ju async %ju", 565123242Siedowse (uintmax_t)sfp->f_syncreads, 566123242Siedowse (uintmax_t)sfp->f_asyncreads); 567123162Siedowse if (sfp->f_fsid.val[0] != 0 || sfp->f_fsid.val[1] != 0) { 568123162Siedowse printf(", fsid "); 569123162Siedowse for (i = 0; i < sizeof(sfp->f_fsid); i++) 570123162Siedowse printf("%02x", ((u_char *)&sfp->f_fsid)[i]); 571123162Siedowse } 57265023Ssheldonh } 57352036Sn_hibma (void)printf(")\n"); 5741558Srgrimes} 5751558Srgrimes 5761558Srgrimesstruct statfs * 577151042Srodrigcgetmntpt(const char *name) 5781558Srgrimes{ 5791558Srgrimes struct statfs *mntbuf; 5801558Srgrimes int i, mntsize; 5811558Srgrimes 5821558Srgrimes mntsize = getmntinfo(&mntbuf, MNT_NOWAIT); 58352678Sgreen for (i = mntsize - 1; i >= 0; i--) { 5841558Srgrimes if (strcmp(mntbuf[i].f_mntfromname, name) == 0 || 5851558Srgrimes strcmp(mntbuf[i].f_mntonname, name) == 0) 5861558Srgrimes return (&mntbuf[i]); 58752678Sgreen } 5881558Srgrimes return (NULL); 5891558Srgrimes} 5901558Srgrimes 5911558Srgrimeschar * 592151042Srodrigccatopt(char *s0, const char *s1) 5931558Srgrimes{ 5941558Srgrimes size_t i; 5951558Srgrimes char *cp; 5961558Srgrimes 59746619Sjkoshy if (s1 == NULL || *s1 == '\0') 598159473Sjmallett return (s0); 59946619Sjkoshy 6001558Srgrimes if (s0 && *s0) { 6011558Srgrimes i = strlen(s0) + strlen(s1) + 1 + 1; 6021558Srgrimes if ((cp = malloc(i)) == NULL) 60337425Scharnier errx(1, "malloc failed"); 6041558Srgrimes (void)snprintf(cp, i, "%s,%s", s0, s1); 6051558Srgrimes } else 6061558Srgrimes cp = strdup(s1); 6071558Srgrimes 6081558Srgrimes if (s0) 6091558Srgrimes free(s0); 6101558Srgrimes return (cp); 6111558Srgrimes} 6121558Srgrimes 6131558Srgrimesvoid 614159473Sjmallettmangle(char *options, int *argcp, char *argv[]) 6151558Srgrimes{ 6161558Srgrimes char *p, *s; 6171558Srgrimes int argc; 6181558Srgrimes 6191558Srgrimes argc = *argcp; 6201558Srgrimes for (s = options; (p = strsep(&s, ",")) != NULL;) 62146619Sjkoshy if (*p != '\0') { 622152465Srodrigc if (strcmp(p, "noauto") == 0) { 623152465Srodrigc /* 624152465Srodrigc * Do not pass noauto option to nmount(). 625152465Srodrigc * or external mount program. noauto is 626152465Srodrigc * only used to prevent mounting a filesystem 627152465Srodrigc * when 'mount -a' is specified, and is 628152465Srodrigc * not a real mount option. 629152465Srodrigc */ 630152465Srodrigc continue; 631152732Srodrigc } else if (strcmp(p, "userquota") == 0) { 632152732Srodrigc continue; 633158400Smaxim } else if (strncmp(p, userquotaeq, 634158400Smaxim sizeof(userquotaeq) - 1) == 0) { 635158400Smaxim continue; 636152732Srodrigc } else if (strcmp(p, "groupquota") == 0) { 637152732Srodrigc continue; 638158400Smaxim } else if (strncmp(p, groupquotaeq, 639158400Smaxim sizeof(groupquotaeq) - 1) == 0) { 640158400Smaxim continue; 641152465Srodrigc } else if (*p == '-') { 6421558Srgrimes argv[argc++] = p; 6431558Srgrimes p = strchr(p, '='); 644123268Strhodes if (p != NULL) { 6451558Srgrimes *p = '\0'; 6461558Srgrimes argv[argc++] = p+1; 6471558Srgrimes } 648153038Srodrigc } else { 649152344Srodrigc argv[argc++] = strdup("-o"); 6501558Srgrimes argv[argc++] = p; 6511558Srgrimes } 65246619Sjkoshy } 6531558Srgrimes 6541558Srgrimes *argcp = argc; 6551558Srgrimes} 6561558Srgrimes 65746619Sjkoshy 65846619Sjkoshychar * 659159473Sjmallettupdate_options(char *opts, char *fstab, int curflags) 66046619Sjkoshy{ 66146619Sjkoshy char *o, *p; 66246619Sjkoshy char *cur; 66346619Sjkoshy char *expopt, *newopt, *tmpopt; 66446619Sjkoshy 66546619Sjkoshy if (opts == NULL) 666159473Sjmallett return (strdup("")); 66746619Sjkoshy 66846619Sjkoshy /* remove meta options from list */ 66946619Sjkoshy remopt(fstab, MOUNT_META_OPTION_FSTAB); 67046619Sjkoshy remopt(fstab, MOUNT_META_OPTION_CURRENT); 67146619Sjkoshy cur = flags2opts(curflags); 67246619Sjkoshy 67346619Sjkoshy /* 67446619Sjkoshy * Expand all meta-options passed to us first. 67546619Sjkoshy */ 67646619Sjkoshy expopt = NULL; 67746619Sjkoshy for (p = opts; (o = strsep(&p, ",")) != NULL;) { 67846619Sjkoshy if (strcmp(MOUNT_META_OPTION_FSTAB, o) == 0) 67946619Sjkoshy expopt = catopt(expopt, fstab); 68046619Sjkoshy else if (strcmp(MOUNT_META_OPTION_CURRENT, o) == 0) 68146619Sjkoshy expopt = catopt(expopt, cur); 68246619Sjkoshy else 68346619Sjkoshy expopt = catopt(expopt, o); 68446619Sjkoshy } 68546619Sjkoshy free(cur); 68646619Sjkoshy free(opts); 68746619Sjkoshy 68846619Sjkoshy /* 68946619Sjkoshy * Remove previous contradictory arguments. Given option "foo" we 69046619Sjkoshy * remove all the "nofoo" options. Given "nofoo" we remove "nonofoo" 69146619Sjkoshy * and "foo" - so we can deal with possible options like "notice". 69246619Sjkoshy */ 69346619Sjkoshy newopt = NULL; 69446619Sjkoshy for (p = expopt; (o = strsep(&p, ",")) != NULL;) { 69546619Sjkoshy if ((tmpopt = malloc( strlen(o) + 2 + 1 )) == NULL) 69646619Sjkoshy errx(1, "malloc failed"); 697125933Sgrog 69846619Sjkoshy strcpy(tmpopt, "no"); 69946619Sjkoshy strcat(tmpopt, o); 70046619Sjkoshy remopt(newopt, tmpopt); 70146619Sjkoshy free(tmpopt); 70246619Sjkoshy 70346619Sjkoshy if (strncmp("no", o, 2) == 0) 70446619Sjkoshy remopt(newopt, o+2); 70546619Sjkoshy 70646619Sjkoshy newopt = catopt(newopt, o); 70746619Sjkoshy } 70846619Sjkoshy free(expopt); 70946619Sjkoshy 710159473Sjmallett return (newopt); 71146619Sjkoshy} 71246619Sjkoshy 7131558Srgrimesvoid 714159473Sjmallettremopt(char *string, const char *opt) 71546619Sjkoshy{ 71646619Sjkoshy char *o, *p, *r; 71746619Sjkoshy 71846619Sjkoshy if (string == NULL || *string == '\0' || opt == NULL || *opt == '\0') 71946619Sjkoshy return; 72046619Sjkoshy 72146619Sjkoshy r = string; 72246619Sjkoshy 72346619Sjkoshy for (p = string; (o = strsep(&p, ",")) != NULL;) { 72446619Sjkoshy if (strcmp(opt, o) != 0) { 72546619Sjkoshy if (*r == ',' && *o != '\0') 72646619Sjkoshy r++; 72746619Sjkoshy while ((*r++ = *o++) != '\0') 72846619Sjkoshy ; 72946619Sjkoshy *--r = ','; 73046619Sjkoshy } 73146619Sjkoshy } 73246619Sjkoshy *r = '\0'; 73346619Sjkoshy} 73446619Sjkoshy 73546619Sjkoshyvoid 736159473Sjmallettusage(void) 7371558Srgrimes{ 7381558Srgrimes 73937425Scharnier (void)fprintf(stderr, "%s\n%s\n%s\n", 740141611Sru"usage: mount [-adfpruvw] [-F fstab] [-o options] [-t ufs | external_type]", 741141611Sru" mount [-dfpruvw] special | node", 742141611Sru" mount [-dfpruvw] [-o options] [-t ufs | external_type] special node"); 7431558Srgrimes exit(1); 7441558Srgrimes} 74517243Sjkh 74617243Sjkhvoid 747159473Sjmallettputfsent(const struct statfs *ent) 74817243Sjkh{ 74923805Sbde struct fstab *fst; 75046619Sjkoshy char *opts; 751125933Sgrog 75246619Sjkoshy opts = flags2opts(ent->f_flags); 753156229Skeramida 754156229Skeramida /* 755156229Skeramida * "rw" is not a real mount option; this is why we print NULL as "rw" 756156229Skeramida * if opts is still NULL here. 757156229Skeramida */ 75823805Sbde printf("%s\t%s\t%s %s", ent->f_mntfromname, ent->f_mntonname, 759156229Skeramida ent->f_fstypename, opts ? opts : "rw"); 76046619Sjkoshy free(opts); 76117243Sjkh 76228671Ssteve if ((fst = getfsspec(ent->f_mntfromname))) 76323805Sbde printf("\t%u %u\n", fst->fs_freq, fst->fs_passno); 76428671Ssteve else if ((fst = getfsfile(ent->f_mntonname))) 76523805Sbde printf("\t%u %u\n", fst->fs_freq, fst->fs_passno); 76656038Sgreen else if (strcmp(ent->f_fstypename, "ufs") == 0) { 76756038Sgreen if (strcmp(ent->f_mntonname, "/") == 0) 76856038Sgreen printf("\t1 1\n"); 76956038Sgreen else 77056038Sgreen printf("\t2 2\n"); 77156038Sgreen } else 77223805Sbde printf("\t0 0\n"); 77317243Sjkh} 77446619Sjkoshy 77546619Sjkoshy 77646619Sjkoshychar * 777159473Sjmallettflags2opts(int flags) 77846619Sjkoshy{ 77946619Sjkoshy char *res; 78046619Sjkoshy 78146619Sjkoshy res = NULL; 78246619Sjkoshy 783155997Srodrigc if (flags & MNT_RDONLY) res = catopt(res, "ro"); 78446619Sjkoshy if (flags & MNT_SYNCHRONOUS) res = catopt(res, "sync"); 78546619Sjkoshy if (flags & MNT_NOEXEC) res = catopt(res, "noexec"); 78646619Sjkoshy if (flags & MNT_NOSUID) res = catopt(res, "nosuid"); 78746619Sjkoshy if (flags & MNT_UNION) res = catopt(res, "union"); 78846619Sjkoshy if (flags & MNT_ASYNC) res = catopt(res, "async"); 78946619Sjkoshy if (flags & MNT_NOATIME) res = catopt(res, "noatime"); 79046619Sjkoshy if (flags & MNT_NOCLUSTERR) res = catopt(res, "noclusterr"); 79146619Sjkoshy if (flags & MNT_NOCLUSTERW) res = catopt(res, "noclusterw"); 79246619Sjkoshy if (flags & MNT_NOSYMFOLLOW) res = catopt(res, "nosymfollow"); 79346619Sjkoshy if (flags & MNT_SUIDDIR) res = catopt(res, "suiddir"); 794101205Srwatson if (flags & MNT_MULTILABEL) res = catopt(res, "multilabel"); 795105118Srwatson if (flags & MNT_ACLS) res = catopt(res, "acls"); 79646619Sjkoshy 797159473Sjmallett return (res); 79846619Sjkoshy} 799