mount.c revision 92882
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 * 3. All advertising materials mentioning features or use of this software 141558Srgrimes * must display the following acknowledgement: 151558Srgrimes * This product includes software developed by the University of 161558Srgrimes * California, Berkeley and its contributors. 171558Srgrimes * 4. Neither the name of the University nor the names of its contributors 181558Srgrimes * may be used to endorse or promote products derived from this software 191558Srgrimes * without specific prior written permission. 201558Srgrimes * 211558Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 221558Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 231558Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 241558Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 251558Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 261558Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 271558Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 281558Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 291558Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 301558Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 311558Srgrimes * SUCH DAMAGE. 321558Srgrimes */ 331558Srgrimes 341558Srgrimes#ifndef lint 3528671Sstevestatic const char copyright[] = 361558Srgrimes"@(#) Copyright (c) 1980, 1989, 1993, 1994\n\ 371558Srgrimes The Regents of the University of California. All rights reserved.\n"; 381558Srgrimes#endif /* not lint */ 391558Srgrimes 401558Srgrimes#ifndef lint 4128671Ssteve#if 0 4223678Speterstatic char sccsid[] = "@(#)mount.c 8.25 (Berkeley) 5/8/95"; 4337425Scharnier#endif 4428671Sstevestatic const char rcsid[] = 4550476Speter "$FreeBSD: head/sbin/mount/mount.c 92882 2002-03-21 13:14:21Z imp $"; 461558Srgrimes#endif /* not lint */ 471558Srgrimes 481558Srgrimes#include <sys/param.h> 491558Srgrimes#include <sys/mount.h> 5023805Sbde#include <sys/stat.h> 511558Srgrimes#include <sys/wait.h> 521558Srgrimes 531558Srgrimes#include <err.h> 541558Srgrimes#include <errno.h> 551558Srgrimes#include <fstab.h> 5623678Speter#include <pwd.h> 571558Srgrimes#include <signal.h> 581558Srgrimes#include <stdio.h> 591558Srgrimes#include <stdlib.h> 601558Srgrimes#include <string.h> 611558Srgrimes#include <unistd.h> 621558Srgrimes 6328671Ssteve#include "extern.h" 6452055Sphk#include "mntopts.h" 651558Srgrimes#include "pathnames.h" 661558Srgrimes 6746619Sjkoshy/* `meta' options */ 6846619Sjkoshy#define MOUNT_META_OPTION_FSTAB "fstab" 6946619Sjkoshy#define MOUNT_META_OPTION_CURRENT "current" 7046619Sjkoshy 7123805Sbdeint debug, fstab_style, verbose; 721558Srgrimes 7392882Simpchar *catopt(char *, const char *); 7492882Simpstruct statfs *getmntpt(const char *); 7592882Simpint hasopt(const char *, const char *); 7692882Simpint ismounted(struct fstab *, struct statfs *, int); 7792882Simpint isremountable(const char *); 7892882Simpvoid mangle(char *, int *, const char **); 7992882Simpchar *update_options(char *, char *, int); 8092882Simpint mountfs(const char *, const char *, const char *, 8192882Simp int, const char *, const char *); 8292882Simpvoid remopt(char *, const char *); 8392882Simpvoid prmount(struct statfs *); 8492882Simpvoid putfsent(const struct statfs *); 8592882Simpvoid usage(void); 8692882Simpchar *flags2opts(int); 871558Srgrimes 8837425Scharnier/* Map from mount options to printable formats. */ 891558Srgrimesstatic struct opt { 901558Srgrimes int o_opt; 911558Srgrimes const char *o_name; 921558Srgrimes} optnames[] = { 931558Srgrimes { MNT_ASYNC, "asynchronous" }, 941558Srgrimes { MNT_EXPORTED, "NFS exported" }, 951558Srgrimes { MNT_LOCAL, "local" }, 9618007Sdg { MNT_NOATIME, "noatime" }, 971558Srgrimes { MNT_NODEV, "nodev" }, 981558Srgrimes { MNT_NOEXEC, "noexec" }, 991558Srgrimes { MNT_NOSUID, "nosuid" }, 10035105Swosch { MNT_NOSYMFOLLOW, "nosymfollow" }, 1011558Srgrimes { MNT_QUOTA, "with quotas" }, 1021558Srgrimes { MNT_RDONLY, "read-only" }, 1031558Srgrimes { MNT_SYNCHRONOUS, "synchronous" }, 1041558Srgrimes { MNT_UNION, "union" }, 10529890Skato { MNT_NOCLUSTERR, "noclusterr" }, 10629890Skato { MNT_NOCLUSTERW, "noclusterw" }, 10731144Sjulian { MNT_SUIDDIR, "suiddir" }, 10834266Sjulian { MNT_SOFTDEP, "soft-updates" }, 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 1231558Srgrimesint 1241558Srgrimesmain(argc, argv) 1251558Srgrimes int argc; 1261558Srgrimes char * const argv[]; 1271558Srgrimes{ 12823678Speter const char *mntfromname, **vfslist, *vfstype; 1291558Srgrimes struct fstab *fs; 1301558Srgrimes struct statfs *mntbuf; 1311558Srgrimes FILE *mountdfp; 1321558Srgrimes pid_t pid; 13352678Sgreen int all, ch, i, init_flags, mntsize, rval, have_fstab; 1341558Srgrimes char *options; 1351558Srgrimes 1361558Srgrimes all = init_flags = 0; 1371558Srgrimes options = NULL; 1381558Srgrimes vfslist = NULL; 1391558Srgrimes vfstype = "ufs"; 14023805Sbde while ((ch = getopt(argc, argv, "adfo:prwt:uv")) != -1) 1411558Srgrimes switch (ch) { 1421558Srgrimes case 'a': 1431558Srgrimes all = 1; 1441558Srgrimes break; 1451558Srgrimes case 'd': 1461558Srgrimes debug = 1; 1471558Srgrimes break; 1481558Srgrimes case 'f': 1491558Srgrimes init_flags |= MNT_FORCE; 1501558Srgrimes break; 1511558Srgrimes case 'o': 1521558Srgrimes if (*optarg) 1531558Srgrimes options = catopt(options, optarg); 1541558Srgrimes break; 15523805Sbde case 'p': 15623805Sbde fstab_style = 1; 15723805Sbde verbose = 1; 15823805Sbde break; 1591558Srgrimes case 'r': 16076198Sdd options = catopt(options, "ro"); 1611558Srgrimes break; 1621558Srgrimes case 't': 1631558Srgrimes if (vfslist != NULL) 16437425Scharnier errx(1, "only one -t option may be specified"); 1651558Srgrimes vfslist = makevfslist(optarg); 1661558Srgrimes vfstype = optarg; 1671558Srgrimes break; 1681558Srgrimes case 'u': 1691558Srgrimes init_flags |= MNT_UPDATE; 1701558Srgrimes break; 1711558Srgrimes case 'v': 1721558Srgrimes verbose = 1; 1731558Srgrimes break; 1741558Srgrimes case 'w': 17576198Sdd options = catopt(options, "noro"); 1761558Srgrimes break; 1771558Srgrimes case '?': 1781558Srgrimes default: 1791558Srgrimes usage(); 1801558Srgrimes /* NOTREACHED */ 1811558Srgrimes } 1821558Srgrimes argc -= optind; 1831558Srgrimes argv += optind; 1841558Srgrimes 1851558Srgrimes#define BADTYPE(type) \ 1861558Srgrimes (strcmp(type, FSTAB_RO) && \ 1871558Srgrimes strcmp(type, FSTAB_RW) && strcmp(type, FSTAB_RQ)) 1881558Srgrimes 1891558Srgrimes rval = 0; 1901558Srgrimes switch (argc) { 1911558Srgrimes case 0: 19228671Ssteve if ((mntsize = getmntinfo(&mntbuf, MNT_NOWAIT)) == 0) 19328671Ssteve err(1, "getmntinfo"); 19428671Ssteve if (all) { 1951558Srgrimes while ((fs = getfsent()) != NULL) { 1961558Srgrimes if (BADTYPE(fs->fs_type)) 1971558Srgrimes continue; 19823678Speter if (checkvfsname(fs->fs_vfstype, vfslist)) 1991558Srgrimes continue; 20023678Speter if (hasopt(fs->fs_mntops, "noauto")) 20110288Sdg continue; 20244811Sbde if (!(init_flags & MNT_UPDATE) && 20344811Sbde ismounted(fs, mntbuf, mntsize)) 20428671Ssteve continue; 2051558Srgrimes if (mountfs(fs->fs_vfstype, fs->fs_spec, 20623805Sbde fs->fs_file, init_flags, options, 20723805Sbde fs->fs_mntops)) 20823805Sbde rval = 1; 2091558Srgrimes } 21028671Ssteve } else if (fstab_style) { 21117243Sjkh for (i = 0; i < mntsize; i++) { 21223678Speter if (checkvfsname(mntbuf[i].f_fstypename, vfslist)) 21317243Sjkh continue; 21423805Sbde putfsent(&mntbuf[i]); 21517243Sjkh } 21623805Sbde } else { 2171558Srgrimes for (i = 0; i < mntsize; i++) { 21823805Sbde if (checkvfsname(mntbuf[i].f_fstypename, 21923805Sbde vfslist)) 2201558Srgrimes continue; 22123678Speter prmount(&mntbuf[i]); 2221558Srgrimes } 2231558Srgrimes } 2241558Srgrimes exit(rval); 2251558Srgrimes case 1: 2261558Srgrimes if (vfslist != NULL) 2271558Srgrimes usage(); 2281558Srgrimes 2291558Srgrimes if (init_flags & MNT_UPDATE) { 23052678Sgreen mntfromname = NULL; 23152678Sgreen have_fstab = 0; 2321558Srgrimes if ((mntbuf = getmntpt(*argv)) == NULL) 23352678Sgreen errx(1, "not currently mounted %s", *argv); 23452678Sgreen /* 23552678Sgreen * Only get the mntflags from fstab if both mntpoint 23652678Sgreen * and mntspec are identical. Also handle the special 23752678Sgreen * case where just '/' is mounted and 'spec' is not 23852678Sgreen * identical with the one from fstab ('/dev' is missing 23952678Sgreen * in the spec-string at boot-time). 24052678Sgreen */ 24146619Sjkoshy if ((fs = getfsfile(mntbuf->f_mntonname)) != NULL) { 24252678Sgreen if (strcmp(fs->fs_spec, 24352678Sgreen mntbuf->f_mntfromname) == 0 && 24452678Sgreen strcmp(fs->fs_file, 24552678Sgreen mntbuf->f_mntonname) == 0) { 24652678Sgreen have_fstab = 1; 24752678Sgreen mntfromname = mntbuf->f_mntfromname; 24852678Sgreen } else if (argv[0][0] == '/' && 24952678Sgreen argv[0][1] == '\0') { 25052678Sgreen fs = getfsfile("/"); 25152678Sgreen have_fstab = 1; 25252678Sgreen mntfromname = fs->fs_spec; 25352678Sgreen } 25452678Sgreen } 25552678Sgreen if (have_fstab) { 25646619Sjkoshy options = update_options(options, fs->fs_mntops, 25746619Sjkoshy mntbuf->f_flags); 25846619Sjkoshy } else { 25923678Speter mntfromname = mntbuf->f_mntfromname; 26046619Sjkoshy options = update_options(options, NULL, 26146619Sjkoshy mntbuf->f_flags); 26246619Sjkoshy } 26323678Speter rval = mountfs(mntbuf->f_fstypename, mntfromname, 26423678Speter mntbuf->f_mntonname, init_flags, options, 0); 26523678Speter break; 2661558Srgrimes } 26755118Seivind rmslashes(*argv, *argv); 26823678Speter if ((fs = getfsfile(*argv)) == NULL && 26923678Speter (fs = getfsspec(*argv)) == NULL) 27037425Scharnier errx(1, "%s: unknown special file or file system", 27123678Speter *argv); 27223678Speter if (BADTYPE(fs->fs_type)) 27337425Scharnier errx(1, "%s has unknown file system type", 27423678Speter *argv); 27523678Speter rval = mountfs(fs->fs_vfstype, fs->fs_spec, fs->fs_file, 27623678Speter init_flags, options, fs->fs_mntops); 2771558Srgrimes break; 2781558Srgrimes case 2: 2791558Srgrimes /* 28052678Sgreen * If -t flag has not been specified, the path cannot be 28152678Sgreen * found, spec contains either a ':' or a '@', and the 28252678Sgreen * spec is not a file with those characters, then assume 28352678Sgreen * that an NFS filesystem is being specified ala Sun. 2841558Srgrimes */ 28552095Sgreen if (vfslist == NULL && strpbrk(argv[0], ":@") != NULL && 28652095Sgreen access(argv[0], 0) == -1) 2871558Srgrimes vfstype = "nfs"; 2881558Srgrimes rval = mountfs(vfstype, 2891558Srgrimes argv[0], argv[1], init_flags, options, NULL); 2901558Srgrimes break; 2911558Srgrimes default: 2921558Srgrimes usage(); 2931558Srgrimes /* NOTREACHED */ 2941558Srgrimes } 2951558Srgrimes 2961558Srgrimes /* 2971558Srgrimes * If the mount was successfully, and done by root, tell mountd the 2981558Srgrimes * good news. Pid checks are probably unnecessary, but don't hurt. 2991558Srgrimes */ 3001558Srgrimes if (rval == 0 && getuid() == 0 && 3011558Srgrimes (mountdfp = fopen(_PATH_MOUNTDPID, "r")) != NULL) { 30228671Ssteve if (fscanf(mountdfp, "%d", &pid) == 1 && 3031558Srgrimes pid > 0 && kill(pid, SIGHUP) == -1 && errno != ESRCH) 3041558Srgrimes err(1, "signal mountd"); 3051558Srgrimes (void)fclose(mountdfp); 3061558Srgrimes } 3071558Srgrimes 3081558Srgrimes exit(rval); 3091558Srgrimes} 3101558Srgrimes 3111558Srgrimesint 31228671Ssteveismounted(fs, mntbuf, mntsize) 31328671Ssteve struct fstab *fs; 31428671Ssteve struct statfs *mntbuf; 31528671Ssteve int mntsize; 31628671Ssteve{ 31728671Ssteve int i; 31828671Ssteve 31928671Ssteve if (fs->fs_file[0] == '/' && fs->fs_file[1] == '\0') 32028671Ssteve /* the root file system can always be remounted */ 32128671Ssteve return (0); 32228671Ssteve 32328671Ssteve for (i = mntsize - 1; i >= 0; --i) 32428671Ssteve if (strcmp(fs->fs_file, mntbuf[i].f_mntonname) == 0 && 32528671Ssteve (!isremountable(fs->fs_vfstype) || 32628671Ssteve strcmp(fs->fs_spec, mntbuf[i].f_mntfromname) == 0)) 32728671Ssteve return (1); 32828671Ssteve return (0); 32928671Ssteve} 33028671Ssteve 33128671Ssteveint 33228671Ssteveisremountable(vfsname) 33328671Ssteve const char *vfsname; 33428671Ssteve{ 33528671Ssteve const char **cp; 33628671Ssteve 33728671Ssteve for (cp = remountable_fs_names; *cp; cp++) 33828671Ssteve if (strcmp(*cp, vfsname) == 0) 33928671Ssteve return (1); 34028671Ssteve return (0); 34128671Ssteve} 34228671Ssteve 34328671Ssteveint 34423678Speterhasopt(mntopts, option) 34523678Speter const char *mntopts, *option; 34623678Speter{ 34723678Speter int negative, found; 34823678Speter char *opt, *optbuf; 34923678Speter 35023678Speter if (option[0] == 'n' && option[1] == 'o') { 35123678Speter negative = 1; 35223678Speter option += 2; 35323678Speter } else 35423678Speter negative = 0; 35523678Speter optbuf = strdup(mntopts); 35623678Speter found = 0; 35723678Speter for (opt = optbuf; (opt = strtok(opt, ",")) != NULL; opt = NULL) { 35823678Speter if (opt[0] == 'n' && opt[1] == 'o') { 35923678Speter if (!strcasecmp(opt + 2, option)) 36023678Speter found = negative; 36123678Speter } else if (!strcasecmp(opt, option)) 36223678Speter found = !negative; 36323678Speter } 36423678Speter free(optbuf); 36523678Speter return (found); 36623678Speter} 36723678Speter 36823678Speterint 3691558Srgrimesmountfs(vfstype, spec, name, flags, options, mntopts) 3701558Srgrimes const char *vfstype, *spec, *name, *options, *mntopts; 3711558Srgrimes int flags; 3721558Srgrimes{ 3731558Srgrimes /* List of directories containing mount_xxx subcommands. */ 3741558Srgrimes static const char *edirs[] = { 3751558Srgrimes _PATH_SBIN, 3761558Srgrimes _PATH_USRSBIN, 3771558Srgrimes NULL 3781558Srgrimes }; 3791558Srgrimes const char *argv[100], **edir; 3801558Srgrimes struct statfs sf; 3811558Srgrimes pid_t pid; 3821558Srgrimes int argc, i, status; 3831558Srgrimes char *optbuf, execname[MAXPATHLEN + 1], mntpath[MAXPATHLEN]; 3841558Srgrimes 38528671Ssteve#if __GNUC__ 38628671Ssteve (void)&optbuf; 38728671Ssteve (void)&name; 38828671Ssteve#endif 38928671Ssteve 39052055Sphk /* resolve the mountpoint with realpath(3) */ 39152055Sphk (void)checkpath(name, mntpath); 3921558Srgrimes name = mntpath; 3931558Srgrimes 39423678Speter if (mntopts == NULL) 39523678Speter mntopts = ""; 3961558Srgrimes if (options == NULL) { 39723678Speter if (*mntopts == '\0') { 3981558Srgrimes options = "rw"; 39923678Speter } else { 4001558Srgrimes options = mntopts; 40123678Speter mntopts = ""; 40223678Speter } 4031558Srgrimes } 4041558Srgrimes optbuf = catopt(strdup(mntopts), options); 4051558Srgrimes 4061558Srgrimes if (strcmp(name, "/") == 0) 4071558Srgrimes flags |= MNT_UPDATE; 4081558Srgrimes if (flags & MNT_FORCE) 4091558Srgrimes optbuf = catopt(optbuf, "force"); 4101558Srgrimes if (flags & MNT_RDONLY) 4111558Srgrimes optbuf = catopt(optbuf, "ro"); 4121558Srgrimes /* 4131558Srgrimes * XXX 4141558Srgrimes * The mount_mfs (newfs) command uses -o to select the 41537425Scharnier * optimization mode. We don't pass the default "-o rw" 4161558Srgrimes * for that reason. 4171558Srgrimes */ 4181558Srgrimes if (flags & MNT_UPDATE) 4191558Srgrimes optbuf = catopt(optbuf, "update"); 4201558Srgrimes 42177577Sru /* Compatibility glue. */ 42277577Sru if (strcmp(vfstype, "msdos") == 0) 42377577Sru vfstype = "msdosfs"; 42477577Sru 4251558Srgrimes argc = 0; 4261558Srgrimes argv[argc++] = vfstype; 4271558Srgrimes mangle(optbuf, &argc, argv); 4281558Srgrimes argv[argc++] = spec; 4291558Srgrimes argv[argc++] = name; 4301558Srgrimes argv[argc] = NULL; 4311558Srgrimes 4321558Srgrimes if (debug) { 4331558Srgrimes (void)printf("exec: mount_%s", vfstype); 4341558Srgrimes for (i = 1; i < argc; i++) 4351558Srgrimes (void)printf(" %s", argv[i]); 4361558Srgrimes (void)printf("\n"); 4371558Srgrimes return (0); 4381558Srgrimes } 4391558Srgrimes 44025120Sache switch (pid = fork()) { 4411558Srgrimes case -1: /* Error. */ 44225120Sache warn("fork"); 4431558Srgrimes free(optbuf); 4441558Srgrimes return (1); 4451558Srgrimes case 0: /* Child. */ 4461558Srgrimes if (strcmp(vfstype, "ufs") == 0) 4471558Srgrimes exit(mount_ufs(argc, (char * const *) argv)); 4481558Srgrimes 4491558Srgrimes /* Go find an executable. */ 45014626Sasami for (edir = edirs; *edir; edir++) { 4511558Srgrimes (void)snprintf(execname, 4521558Srgrimes sizeof(execname), "%s/mount_%s", *edir, vfstype); 4531558Srgrimes execv(execname, (char * const *)argv); 45414626Sasami } 45514626Sasami if (errno == ENOENT) { 45614626Sasami int len = 0; 45714626Sasami char *cp; 45814626Sasami for (edir = edirs; *edir; edir++) 45914626Sasami len += strlen(*edir) + 2; /* ", " */ 46037425Scharnier if ((cp = malloc(len)) == NULL) 46137425Scharnier errx(1, "malloc failed"); 46214626Sasami cp[0] = '\0'; 46314626Sasami for (edir = edirs; *edir; edir++) { 46414626Sasami strcat(cp, *edir); 46514626Sasami if (edir[1] != NULL) 46614626Sasami strcat(cp, ", "); 46714626Sasami } 46814626Sasami warn("exec mount_%s not found in %s", vfstype, cp); 46914626Sasami } 4701558Srgrimes exit(1); 4711558Srgrimes /* NOTREACHED */ 4721558Srgrimes default: /* Parent. */ 4731558Srgrimes free(optbuf); 4741558Srgrimes 4751558Srgrimes if (waitpid(pid, &status, 0) < 0) { 4761558Srgrimes warn("waitpid"); 4771558Srgrimes return (1); 4781558Srgrimes } 4791558Srgrimes 4801558Srgrimes if (WIFEXITED(status)) { 4811558Srgrimes if (WEXITSTATUS(status) != 0) 4821558Srgrimes return (WEXITSTATUS(status)); 4831558Srgrimes } else if (WIFSIGNALED(status)) { 4841558Srgrimes warnx("%s: %s", name, sys_siglist[WTERMSIG(status)]); 4851558Srgrimes return (1); 4861558Srgrimes } 4871558Srgrimes 4881558Srgrimes if (verbose) { 4891558Srgrimes if (statfs(name, &sf) < 0) { 49023678Speter warn("statfs %s", name); 4911558Srgrimes return (1); 4921558Srgrimes } 49317243Sjkh if (fstab_style) 49423805Sbde putfsent(&sf); 49517243Sjkh else 49623678Speter prmount(&sf); 4971558Srgrimes } 4981558Srgrimes break; 4991558Srgrimes } 5001558Srgrimes 5011558Srgrimes return (0); 5021558Srgrimes} 5031558Srgrimes 5041558Srgrimesvoid 50523678Speterprmount(sfp) 50623678Speter struct statfs *sfp; 50723678Speter{ 5081558Srgrimes int flags; 5091558Srgrimes struct opt *o; 51023678Speter struct passwd *pw; 5111558Srgrimes 51252036Sn_hibma (void)printf("%s on %s (%s", sfp->f_mntfromname, sfp->f_mntonname, 51352036Sn_hibma sfp->f_fstypename); 5141558Srgrimes 51523678Speter flags = sfp->f_flags & MNT_VISFLAGMASK; 51652036Sn_hibma for (o = optnames; flags && o->o_opt; o++) 5171558Srgrimes if (flags & o->o_opt) { 51852036Sn_hibma (void)printf(", %s", o->o_name); 5191558Srgrimes flags &= ~o->o_opt; 5201558Srgrimes } 52123678Speter if (sfp->f_owner) { 52252036Sn_hibma (void)printf(", mounted by "); 52323678Speter if ((pw = getpwuid(sfp->f_owner)) != NULL) 52423678Speter (void)printf("%s", pw->pw_name); 52523678Speter else 52623678Speter (void)printf("%d", sfp->f_owner); 52723678Speter } 52865023Ssheldonh if (verbose) { 52965023Ssheldonh if (sfp->f_syncwrites != 0 || sfp->f_asyncwrites != 0) 53065023Ssheldonh (void)printf(", writes: sync %ld async %ld", 53165023Ssheldonh sfp->f_syncwrites, sfp->f_asyncwrites); 53265023Ssheldonh if (sfp->f_syncreads != 0 || sfp->f_asyncreads != 0) 53365023Ssheldonh (void)printf(", reads: sync %ld async %ld", 53465023Ssheldonh sfp->f_syncreads, sfp->f_asyncreads); 53565023Ssheldonh } 53652036Sn_hibma (void)printf(")\n"); 5371558Srgrimes} 5381558Srgrimes 5391558Srgrimesstruct statfs * 5401558Srgrimesgetmntpt(name) 5411558Srgrimes const char *name; 5421558Srgrimes{ 5431558Srgrimes struct statfs *mntbuf; 5441558Srgrimes int i, mntsize; 5451558Srgrimes 5461558Srgrimes mntsize = getmntinfo(&mntbuf, MNT_NOWAIT); 54752678Sgreen for (i = mntsize - 1; i >= 0; i--) { 5481558Srgrimes if (strcmp(mntbuf[i].f_mntfromname, name) == 0 || 5491558Srgrimes strcmp(mntbuf[i].f_mntonname, name) == 0) 5501558Srgrimes return (&mntbuf[i]); 55152678Sgreen } 5521558Srgrimes return (NULL); 5531558Srgrimes} 5541558Srgrimes 5551558Srgrimeschar * 5561558Srgrimescatopt(s0, s1) 5571558Srgrimes char *s0; 5581558Srgrimes const char *s1; 5591558Srgrimes{ 5601558Srgrimes size_t i; 5611558Srgrimes char *cp; 5621558Srgrimes 56346619Sjkoshy if (s1 == NULL || *s1 == '\0') 56446619Sjkoshy return s0; 56546619Sjkoshy 5661558Srgrimes if (s0 && *s0) { 5671558Srgrimes i = strlen(s0) + strlen(s1) + 1 + 1; 5681558Srgrimes if ((cp = malloc(i)) == NULL) 56937425Scharnier errx(1, "malloc failed"); 5701558Srgrimes (void)snprintf(cp, i, "%s,%s", s0, s1); 5711558Srgrimes } else 5721558Srgrimes cp = strdup(s1); 5731558Srgrimes 5741558Srgrimes if (s0) 5751558Srgrimes free(s0); 5761558Srgrimes return (cp); 5771558Srgrimes} 5781558Srgrimes 5791558Srgrimesvoid 5801558Srgrimesmangle(options, argcp, argv) 5811558Srgrimes char *options; 5821558Srgrimes int *argcp; 5831558Srgrimes const char **argv; 5841558Srgrimes{ 5851558Srgrimes char *p, *s; 5861558Srgrimes int argc; 5871558Srgrimes 5881558Srgrimes argc = *argcp; 5891558Srgrimes for (s = options; (p = strsep(&s, ",")) != NULL;) 59046619Sjkoshy if (*p != '\0') { 5911558Srgrimes if (*p == '-') { 5921558Srgrimes argv[argc++] = p; 5931558Srgrimes p = strchr(p, '='); 5941558Srgrimes if (p) { 5951558Srgrimes *p = '\0'; 5961558Srgrimes argv[argc++] = p+1; 5971558Srgrimes } 5981558Srgrimes } else if (strcmp(p, "rw") != 0) { 5991558Srgrimes argv[argc++] = "-o"; 6001558Srgrimes argv[argc++] = p; 6011558Srgrimes } 60246619Sjkoshy } 6031558Srgrimes 6041558Srgrimes *argcp = argc; 6051558Srgrimes} 6061558Srgrimes 60746619Sjkoshy 60846619Sjkoshychar * 60946619Sjkoshyupdate_options(opts, fstab, curflags) 61046619Sjkoshy char *opts; 61146619Sjkoshy char *fstab; 61246619Sjkoshy int curflags; 61346619Sjkoshy{ 61446619Sjkoshy char *o, *p; 61546619Sjkoshy char *cur; 61646619Sjkoshy char *expopt, *newopt, *tmpopt; 61746619Sjkoshy 61846619Sjkoshy if (opts == NULL) 61946619Sjkoshy return strdup(""); 62046619Sjkoshy 62146619Sjkoshy /* remove meta options from list */ 62246619Sjkoshy remopt(fstab, MOUNT_META_OPTION_FSTAB); 62346619Sjkoshy remopt(fstab, MOUNT_META_OPTION_CURRENT); 62446619Sjkoshy cur = flags2opts(curflags); 62546619Sjkoshy 62646619Sjkoshy /* 62746619Sjkoshy * Expand all meta-options passed to us first. 62846619Sjkoshy */ 62946619Sjkoshy expopt = NULL; 63046619Sjkoshy for (p = opts; (o = strsep(&p, ",")) != NULL;) { 63146619Sjkoshy if (strcmp(MOUNT_META_OPTION_FSTAB, o) == 0) 63246619Sjkoshy expopt = catopt(expopt, fstab); 63346619Sjkoshy else if (strcmp(MOUNT_META_OPTION_CURRENT, o) == 0) 63446619Sjkoshy expopt = catopt(expopt, cur); 63546619Sjkoshy else 63646619Sjkoshy expopt = catopt(expopt, o); 63746619Sjkoshy } 63846619Sjkoshy free(cur); 63946619Sjkoshy free(opts); 64046619Sjkoshy 64146619Sjkoshy /* 64246619Sjkoshy * Remove previous contradictory arguments. Given option "foo" we 64346619Sjkoshy * remove all the "nofoo" options. Given "nofoo" we remove "nonofoo" 64446619Sjkoshy * and "foo" - so we can deal with possible options like "notice". 64546619Sjkoshy */ 64646619Sjkoshy newopt = NULL; 64746619Sjkoshy for (p = expopt; (o = strsep(&p, ",")) != NULL;) { 64846619Sjkoshy if ((tmpopt = malloc( strlen(o) + 2 + 1 )) == NULL) 64946619Sjkoshy errx(1, "malloc failed"); 65046619Sjkoshy 65146619Sjkoshy strcpy(tmpopt, "no"); 65246619Sjkoshy strcat(tmpopt, o); 65346619Sjkoshy remopt(newopt, tmpopt); 65446619Sjkoshy free(tmpopt); 65546619Sjkoshy 65646619Sjkoshy if (strncmp("no", o, 2) == 0) 65746619Sjkoshy remopt(newopt, o+2); 65846619Sjkoshy 65946619Sjkoshy newopt = catopt(newopt, o); 66046619Sjkoshy } 66146619Sjkoshy free(expopt); 66246619Sjkoshy 66346619Sjkoshy return newopt; 66446619Sjkoshy} 66546619Sjkoshy 6661558Srgrimesvoid 66746619Sjkoshyremopt(string, opt) 66846619Sjkoshy char *string; 66946619Sjkoshy const char *opt; 67046619Sjkoshy{ 67146619Sjkoshy char *o, *p, *r; 67246619Sjkoshy 67346619Sjkoshy if (string == NULL || *string == '\0' || opt == NULL || *opt == '\0') 67446619Sjkoshy return; 67546619Sjkoshy 67646619Sjkoshy r = string; 67746619Sjkoshy 67846619Sjkoshy for (p = string; (o = strsep(&p, ",")) != NULL;) { 67946619Sjkoshy if (strcmp(opt, o) != 0) { 68046619Sjkoshy if (*r == ',' && *o != '\0') 68146619Sjkoshy r++; 68246619Sjkoshy while ((*r++ = *o++) != '\0') 68346619Sjkoshy ; 68446619Sjkoshy *--r = ','; 68546619Sjkoshy } 68646619Sjkoshy } 68746619Sjkoshy *r = '\0'; 68846619Sjkoshy} 68946619Sjkoshy 69046619Sjkoshyvoid 6911558Srgrimesusage() 6921558Srgrimes{ 6931558Srgrimes 69437425Scharnier (void)fprintf(stderr, "%s\n%s\n%s\n", 69537425Scharnier"usage: mount [-dfpruvw] [-o options] [-t ufs | external_type] special node", 69637425Scharnier" mount [-adfpruvw] [-t ufs | external_type]", 69737425Scharnier" mount [-dfpruvw] special | node"); 6981558Srgrimes exit(1); 6991558Srgrimes} 70017243Sjkh 70117243Sjkhvoid 70223805Sbdeputfsent(ent) 70323805Sbde const struct statfs *ent; 70417243Sjkh{ 70523805Sbde struct fstab *fst; 70646619Sjkoshy char *opts; 70746619Sjkoshy 70846619Sjkoshy opts = flags2opts(ent->f_flags); 70923805Sbde printf("%s\t%s\t%s %s", ent->f_mntfromname, ent->f_mntonname, 71046619Sjkoshy ent->f_fstypename, opts); 71146619Sjkoshy free(opts); 71217243Sjkh 71328671Ssteve if ((fst = getfsspec(ent->f_mntfromname))) 71423805Sbde printf("\t%u %u\n", fst->fs_freq, fst->fs_passno); 71528671Ssteve else if ((fst = getfsfile(ent->f_mntonname))) 71623805Sbde printf("\t%u %u\n", fst->fs_freq, fst->fs_passno); 71756038Sgreen else if (strcmp(ent->f_fstypename, "ufs") == 0) { 71856038Sgreen if (strcmp(ent->f_mntonname, "/") == 0) 71956038Sgreen printf("\t1 1\n"); 72056038Sgreen else 72156038Sgreen printf("\t2 2\n"); 72256038Sgreen } else 72323805Sbde printf("\t0 0\n"); 72417243Sjkh} 72546619Sjkoshy 72646619Sjkoshy 72746619Sjkoshychar * 72846619Sjkoshyflags2opts(flags) 72946619Sjkoshy int flags; 73046619Sjkoshy{ 73146619Sjkoshy char *res; 73246619Sjkoshy 73346619Sjkoshy res = NULL; 73446619Sjkoshy 73546619Sjkoshy res = catopt(res, (flags & MNT_RDONLY) ? "ro" : "rw"); 73646619Sjkoshy 73746619Sjkoshy if (flags & MNT_SYNCHRONOUS) res = catopt(res, "sync"); 73846619Sjkoshy if (flags & MNT_NOEXEC) res = catopt(res, "noexec"); 73946619Sjkoshy if (flags & MNT_NOSUID) res = catopt(res, "nosuid"); 74046619Sjkoshy if (flags & MNT_NODEV) res = catopt(res, "nodev"); 74146619Sjkoshy if (flags & MNT_UNION) res = catopt(res, "union"); 74246619Sjkoshy if (flags & MNT_ASYNC) res = catopt(res, "async"); 74346619Sjkoshy if (flags & MNT_NOATIME) res = catopt(res, "noatime"); 74446619Sjkoshy if (flags & MNT_NOCLUSTERR) res = catopt(res, "noclusterr"); 74546619Sjkoshy if (flags & MNT_NOCLUSTERW) res = catopt(res, "noclusterw"); 74646619Sjkoshy if (flags & MNT_NOSYMFOLLOW) res = catopt(res, "nosymfollow"); 74746619Sjkoshy if (flags & MNT_SUIDDIR) res = catopt(res, "suiddir"); 74846619Sjkoshy 74946619Sjkoshy return res; 75046619Sjkoshy} 751