926 lines
22 KiB
C
926 lines
22 KiB
C
/*-
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* Copyright (c) 1980, 1989, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static const char copyright[] =
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"@(#) Copyright (c) 1980, 1989, 1993, 1994\n\
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The Regents of the University of California. All rights reserved.\n";
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#if 0
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static char sccsid[] = "@(#)mount.c 8.25 (Berkeley) 5/8/95";
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#endif
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#endif /* not lint */
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/mount.h>
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#include <sys/stat.h>
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#include <sys/wait.h>
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <fstab.h>
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#include <paths.h>
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#include <pwd.h>
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#include <signal.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <libutil.h>
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#include "extern.h"
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#include "mntopts.h"
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#include "pathnames.h"
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/* `meta' options */
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#define MOUNT_META_OPTION_FSTAB "fstab"
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#define MOUNT_META_OPTION_CURRENT "current"
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int debug, fstab_style, verbose;
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struct cpa {
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char **a;
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ssize_t sz;
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int c;
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};
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char *catopt(char *, const char *);
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struct statfs *getmntpt(const char *);
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int hasopt(const char *, const char *);
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int ismounted(struct fstab *, struct statfs *, int);
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int isremountable(const char *);
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void mangle(char *, struct cpa *);
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char *update_options(char *, char *, int);
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int mountfs(const char *, const char *, const char *,
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int, const char *, const char *);
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void remopt(char *, const char *);
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void prmount(struct statfs *);
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void putfsent(struct statfs *);
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void usage(void);
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char *flags2opts(int);
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/* Map from mount options to printable formats. */
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static struct opt {
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int o_opt;
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const char *o_name;
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} optnames[] = {
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{ MNT_ASYNC, "asynchronous" },
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{ MNT_EXPORTED, "NFS exported" },
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{ MNT_LOCAL, "local" },
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{ MNT_NOATIME, "noatime" },
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{ MNT_NOEXEC, "noexec" },
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{ MNT_NOSUID, "nosuid" },
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{ MNT_NOSYMFOLLOW, "nosymfollow" },
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{ MNT_QUOTA, "with quotas" },
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{ MNT_RDONLY, "read-only" },
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{ MNT_SYNCHRONOUS, "synchronous" },
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{ MNT_UNION, "union" },
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{ MNT_NOCLUSTERR, "noclusterr" },
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{ MNT_NOCLUSTERW, "noclusterw" },
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{ MNT_SUIDDIR, "suiddir" },
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{ MNT_SOFTDEP, "soft-updates" },
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{ MNT_MULTILABEL, "multilabel" },
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{ MNT_ACLS, "acls" },
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{ MNT_NFS4ACLS, "nfsv4acls" },
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{ MNT_GJOURNAL, "gjournal" },
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{ 0, NULL }
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};
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/*
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* List of VFS types that can be remounted without becoming mounted on top
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* of each other.
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* XXX Is this list correct?
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*/
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static const char *
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remountable_fs_names[] = {
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"ufs", "ffs", "ext2fs",
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0
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};
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static const char userquotaeq[] = "userquota=";
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static const char groupquotaeq[] = "groupquota=";
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static char *mountprog = NULL;
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static int
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use_mountprog(const char *vfstype)
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{
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/* XXX: We need to get away from implementing external mount
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* programs for every filesystem, and move towards having
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* each filesystem properly implement the nmount() system call.
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*/
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unsigned int i;
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const char *fs[] = {
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"cd9660", "mfs", "msdosfs", "newnfs", "nfs", "ntfs",
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"nwfs", "nullfs", "portalfs", "smbfs", "udf", "unionfs",
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NULL
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};
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if (mountprog != NULL)
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return (1);
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for (i = 0; fs[i] != NULL; ++i) {
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if (strcmp(vfstype, fs[i]) == 0)
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return (1);
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}
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return (0);
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}
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static int
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exec_mountprog(const char *name, const char *execname, char *const argv[])
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{
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pid_t pid;
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int status;
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switch (pid = fork()) {
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case -1: /* Error. */
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warn("fork");
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exit (1);
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case 0: /* Child. */
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/* Go find an executable. */
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execvP(execname, _PATH_SYSPATH, argv);
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if (errno == ENOENT) {
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warn("exec %s not found", execname);
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if (execname[0] != '/') {
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warnx("in path: %s", _PATH_SYSPATH);
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}
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}
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exit(1);
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default: /* Parent. */
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if (waitpid(pid, &status, 0) < 0) {
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warn("waitpid");
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return (1);
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}
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if (WIFEXITED(status)) {
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if (WEXITSTATUS(status) != 0)
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return (WEXITSTATUS(status));
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} else if (WIFSIGNALED(status)) {
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warnx("%s: %s", name, sys_siglist[WTERMSIG(status)]);
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return (1);
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}
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break;
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}
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return (0);
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}
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static int
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specified_ro(const char *arg)
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{
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char *optbuf, *opt;
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int ret = 0;
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optbuf = strdup(arg);
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if (optbuf == NULL)
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err(1, NULL);
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for (opt = optbuf; (opt = strtok(opt, ",")) != NULL; opt = NULL) {
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if (strcmp(opt, "ro") == 0) {
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ret = 1;
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break;
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}
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}
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free(optbuf);
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return (ret);
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}
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static void
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restart_mountd(void)
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{
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struct pidfh *pfh;
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pid_t mountdpid;
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pfh = pidfile_open(_PATH_MOUNTDPID, 0600, &mountdpid);
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if (pfh != NULL) {
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/* Mountd is not running. */
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pidfile_remove(pfh);
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return;
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}
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if (errno != EEXIST) {
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/* Cannot open pidfile for some reason. */
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return;
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}
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/* We have mountd(8) PID in mountdpid varible, let's signal it. */
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if (kill(mountdpid, SIGHUP) == -1)
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err(1, "signal mountd");
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}
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int
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main(int argc, char *argv[])
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{
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const char *mntfromname, **vfslist, *vfstype;
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struct fstab *fs;
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struct statfs *mntbuf;
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int all, ch, i, init_flags, late, mntsize, rval, have_fstab, ro;
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char *cp, *ep, *options;
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all = init_flags = late = 0;
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ro = 0;
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options = NULL;
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vfslist = NULL;
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vfstype = "ufs";
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while ((ch = getopt(argc, argv, "adF:flo:prt:uvw")) != -1)
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switch (ch) {
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case 'a':
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all = 1;
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break;
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case 'd':
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debug = 1;
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break;
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case 'F':
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setfstab(optarg);
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break;
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case 'f':
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init_flags |= MNT_FORCE;
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break;
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case 'l':
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late = 1;
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break;
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case 'o':
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if (*optarg) {
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options = catopt(options, optarg);
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if (specified_ro(optarg))
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ro = 1;
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}
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break;
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case 'p':
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fstab_style = 1;
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verbose = 1;
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break;
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case 'r':
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options = catopt(options, "ro");
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ro = 1;
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break;
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case 't':
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if (vfslist != NULL)
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errx(1, "only one -t option may be specified");
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vfslist = makevfslist(optarg);
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vfstype = optarg;
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break;
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case 'u':
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init_flags |= MNT_UPDATE;
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break;
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case 'v':
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verbose = 1;
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break;
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case 'w':
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options = catopt(options, "noro");
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break;
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case '?':
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default:
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usage();
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/* NOTREACHED */
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}
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argc -= optind;
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argv += optind;
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#define BADTYPE(type) \
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(strcmp(type, FSTAB_RO) && \
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strcmp(type, FSTAB_RW) && strcmp(type, FSTAB_RQ))
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if ((init_flags & MNT_UPDATE) && (ro == 0))
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options = catopt(options, "noro");
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rval = 0;
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switch (argc) {
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case 0:
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if ((mntsize = getmntinfo(&mntbuf, MNT_NOWAIT)) == 0)
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err(1, "getmntinfo");
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if (all) {
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while ((fs = getfsent()) != NULL) {
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if (BADTYPE(fs->fs_type))
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continue;
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if (checkvfsname(fs->fs_vfstype, vfslist))
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continue;
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if (hasopt(fs->fs_mntops, "noauto"))
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continue;
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if (hasopt(fs->fs_mntops, "late") && !late)
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continue;
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if (!(init_flags & MNT_UPDATE) &&
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ismounted(fs, mntbuf, mntsize))
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continue;
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options = update_options(options, fs->fs_mntops,
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mntbuf->f_flags);
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if (mountfs(fs->fs_vfstype, fs->fs_spec,
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fs->fs_file, init_flags, options,
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fs->fs_mntops))
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rval = 1;
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}
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} else if (fstab_style) {
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for (i = 0; i < mntsize; i++) {
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if (checkvfsname(mntbuf[i].f_fstypename, vfslist))
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continue;
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putfsent(&mntbuf[i]);
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}
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} else {
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for (i = 0; i < mntsize; i++) {
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if (checkvfsname(mntbuf[i].f_fstypename,
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vfslist))
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continue;
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if (!verbose &&
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(mntbuf[i].f_flags & MNT_IGNORE) != 0)
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continue;
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prmount(&mntbuf[i]);
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}
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}
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exit(rval);
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case 1:
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if (vfslist != NULL)
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usage();
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rmslashes(*argv, *argv);
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if (init_flags & MNT_UPDATE) {
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mntfromname = NULL;
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have_fstab = 0;
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if ((mntbuf = getmntpt(*argv)) == NULL)
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errx(1, "not currently mounted %s", *argv);
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/*
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* Only get the mntflags from fstab if both mntpoint
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* and mntspec are identical. Also handle the special
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* case where just '/' is mounted and 'spec' is not
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* identical with the one from fstab ('/dev' is missing
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* in the spec-string at boot-time).
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*/
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if ((fs = getfsfile(mntbuf->f_mntonname)) != NULL) {
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if (strcmp(fs->fs_spec,
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mntbuf->f_mntfromname) == 0 &&
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strcmp(fs->fs_file,
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mntbuf->f_mntonname) == 0) {
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have_fstab = 1;
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mntfromname = mntbuf->f_mntfromname;
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} else if (argv[0][0] == '/' &&
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argv[0][1] == '\0') {
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fs = getfsfile("/");
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have_fstab = 1;
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mntfromname = fs->fs_spec;
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}
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}
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if (have_fstab) {
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options = update_options(options, fs->fs_mntops,
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mntbuf->f_flags);
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} else {
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mntfromname = mntbuf->f_mntfromname;
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options = update_options(options, NULL,
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mntbuf->f_flags);
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}
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rval = mountfs(mntbuf->f_fstypename, mntfromname,
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mntbuf->f_mntonname, init_flags, options, 0);
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break;
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}
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if ((fs = getfsfile(*argv)) == NULL &&
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(fs = getfsspec(*argv)) == NULL)
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errx(1, "%s: unknown special file or file system",
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*argv);
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if (BADTYPE(fs->fs_type))
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errx(1, "%s has unknown file system type",
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*argv);
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rval = mountfs(fs->fs_vfstype, fs->fs_spec, fs->fs_file,
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init_flags, options, fs->fs_mntops);
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break;
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case 2:
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/*
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* If -t flag has not been specified, the path cannot be
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* found, spec contains either a ':' or a '@', then assume
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* that an NFS file system is being specified ala Sun.
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* Check if the hostname contains only allowed characters
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* to reduce false positives. IPv6 addresses containing
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* ':' will be correctly parsed only if the separator is '@'.
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* The definition of a valid hostname is taken from RFC 1034.
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*/
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if (vfslist == NULL && ((ep = strchr(argv[0], '@')) != NULL ||
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(ep = strchr(argv[0], ':')) != NULL)) {
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if (*ep == '@') {
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cp = ep + 1;
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ep = cp + strlen(cp);
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} else
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cp = argv[0];
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while (cp != ep) {
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if (!isdigit(*cp) && !isalpha(*cp) &&
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*cp != '.' && *cp != '-' && *cp != ':')
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break;
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cp++;
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}
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if (cp == ep)
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vfstype = "nfs";
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}
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rval = mountfs(vfstype,
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argv[0], argv[1], init_flags, options, NULL);
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break;
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default:
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usage();
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/* NOTREACHED */
|
|
}
|
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|
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/*
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* If the mount was successfully, and done by root, tell mountd the
|
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* good news.
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*/
|
|
if (rval == 0 && getuid() == 0)
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restart_mountd();
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exit(rval);
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}
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|
|
int
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ismounted(struct fstab *fs, struct statfs *mntbuf, int mntsize)
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{
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char realfsfile[PATH_MAX];
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int i;
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if (fs->fs_file[0] == '/' && fs->fs_file[1] == '\0')
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/* the root file system can always be remounted */
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return (0);
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|
|
/* The user may have specified a symlink in fstab, resolve the path */
|
|
if (realpath(fs->fs_file, realfsfile) == NULL) {
|
|
/* Cannot resolve the path, use original one */
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strlcpy(realfsfile, fs->fs_file, sizeof(realfsfile));
|
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}
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|
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for (i = mntsize - 1; i >= 0; --i)
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if (strcmp(realfsfile, mntbuf[i].f_mntonname) == 0 &&
|
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(!isremountable(fs->fs_vfstype) ||
|
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strcmp(fs->fs_spec, mntbuf[i].f_mntfromname) == 0))
|
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return (1);
|
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return (0);
|
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}
|
|
|
|
int
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isremountable(const char *vfsname)
|
|
{
|
|
const char **cp;
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|
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for (cp = remountable_fs_names; *cp; cp++)
|
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if (strcmp(*cp, vfsname) == 0)
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return (1);
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return (0);
|
|
}
|
|
|
|
int
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hasopt(const char *mntopts, const char *option)
|
|
{
|
|
int negative, found;
|
|
char *opt, *optbuf;
|
|
|
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if (option[0] == 'n' && option[1] == 'o') {
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negative = 1;
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option += 2;
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} else
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negative = 0;
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|
optbuf = strdup(mntopts);
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found = 0;
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for (opt = optbuf; (opt = strtok(opt, ",")) != NULL; opt = NULL) {
|
|
if (opt[0] == 'n' && opt[1] == 'o') {
|
|
if (!strcasecmp(opt + 2, option))
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found = negative;
|
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} else if (!strcasecmp(opt, option))
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found = !negative;
|
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}
|
|
free(optbuf);
|
|
return (found);
|
|
}
|
|
|
|
static void
|
|
append_arg(struct cpa *sa, char *arg)
|
|
{
|
|
if (sa->c + 1 == sa->sz) {
|
|
sa->sz = sa->sz == 0 ? 8 : sa->sz * 2;
|
|
sa->a = realloc(sa->a, sizeof(sa->a) * sa->sz);
|
|
if (sa->a == NULL)
|
|
errx(1, "realloc failed");
|
|
}
|
|
sa->a[++sa->c] = arg;
|
|
}
|
|
|
|
int
|
|
mountfs(const char *vfstype, const char *spec, const char *name, int flags,
|
|
const char *options, const char *mntopts)
|
|
{
|
|
struct statfs sf;
|
|
int i, ret;
|
|
char *optbuf, execname[PATH_MAX], mntpath[PATH_MAX];
|
|
static struct cpa mnt_argv;
|
|
|
|
/* resolve the mountpoint with realpath(3) */
|
|
(void)checkpath(name, mntpath);
|
|
name = mntpath;
|
|
|
|
if (mntopts == NULL)
|
|
mntopts = "";
|
|
optbuf = catopt(strdup(mntopts), options);
|
|
|
|
if (strcmp(name, "/") == 0)
|
|
flags |= MNT_UPDATE;
|
|
if (flags & MNT_FORCE)
|
|
optbuf = catopt(optbuf, "force");
|
|
if (flags & MNT_RDONLY)
|
|
optbuf = catopt(optbuf, "ro");
|
|
/*
|
|
* XXX
|
|
* The mount_mfs (newfs) command uses -o to select the
|
|
* optimization mode. We don't pass the default "-o rw"
|
|
* for that reason.
|
|
*/
|
|
if (flags & MNT_UPDATE)
|
|
optbuf = catopt(optbuf, "update");
|
|
|
|
/* Compatibility glue. */
|
|
if (strcmp(vfstype, "msdos") == 0) {
|
|
warnx(
|
|
"Using \"-t msdosfs\", since \"-t msdos\" is deprecated.");
|
|
vfstype = "msdosfs";
|
|
}
|
|
|
|
/* Construct the name of the appropriate mount command */
|
|
(void)snprintf(execname, sizeof(execname), "mount_%s", vfstype);
|
|
|
|
mnt_argv.c = -1;
|
|
append_arg(&mnt_argv, execname);
|
|
mangle(optbuf, &mnt_argv);
|
|
if (mountprog != NULL)
|
|
strcpy(execname, mountprog);
|
|
|
|
append_arg(&mnt_argv, strdup(spec));
|
|
append_arg(&mnt_argv, strdup(name));
|
|
append_arg(&mnt_argv, NULL);
|
|
|
|
if (debug) {
|
|
if (use_mountprog(vfstype))
|
|
printf("exec: %s", execname);
|
|
else
|
|
printf("mount -t %s", vfstype);
|
|
for (i = 1; i < mnt_argv.c; i++)
|
|
(void)printf(" %s", mnt_argv.a[i]);
|
|
(void)printf("\n");
|
|
return (0);
|
|
}
|
|
|
|
if (use_mountprog(vfstype)) {
|
|
ret = exec_mountprog(name, execname, mnt_argv.a);
|
|
} else {
|
|
ret = mount_fs(vfstype, mnt_argv.c, mnt_argv.a);
|
|
}
|
|
|
|
free(optbuf);
|
|
|
|
if (verbose) {
|
|
if (statfs(name, &sf) < 0) {
|
|
warn("statfs %s", name);
|
|
return (1);
|
|
}
|
|
if (fstab_style)
|
|
putfsent(&sf);
|
|
else
|
|
prmount(&sf);
|
|
}
|
|
|
|
return (ret);
|
|
}
|
|
|
|
void
|
|
prmount(struct statfs *sfp)
|
|
{
|
|
int flags;
|
|
unsigned int i;
|
|
struct opt *o;
|
|
struct passwd *pw;
|
|
|
|
(void)printf("%s on %s (%s", sfp->f_mntfromname, sfp->f_mntonname,
|
|
sfp->f_fstypename);
|
|
|
|
flags = sfp->f_flags & MNT_VISFLAGMASK;
|
|
for (o = optnames; flags && o->o_opt; o++)
|
|
if (flags & o->o_opt) {
|
|
(void)printf(", %s", o->o_name);
|
|
flags &= ~o->o_opt;
|
|
}
|
|
/*
|
|
* Inform when file system is mounted by an unprivileged user
|
|
* or privileged non-root user.
|
|
*/
|
|
if ((flags & MNT_USER) != 0 || sfp->f_owner != 0) {
|
|
(void)printf(", mounted by ");
|
|
if ((pw = getpwuid(sfp->f_owner)) != NULL)
|
|
(void)printf("%s", pw->pw_name);
|
|
else
|
|
(void)printf("%d", sfp->f_owner);
|
|
}
|
|
if (verbose) {
|
|
if (sfp->f_syncwrites != 0 || sfp->f_asyncwrites != 0)
|
|
(void)printf(", writes: sync %ju async %ju",
|
|
(uintmax_t)sfp->f_syncwrites,
|
|
(uintmax_t)sfp->f_asyncwrites);
|
|
if (sfp->f_syncreads != 0 || sfp->f_asyncreads != 0)
|
|
(void)printf(", reads: sync %ju async %ju",
|
|
(uintmax_t)sfp->f_syncreads,
|
|
(uintmax_t)sfp->f_asyncreads);
|
|
if (sfp->f_fsid.val[0] != 0 || sfp->f_fsid.val[1] != 0) {
|
|
printf(", fsid ");
|
|
for (i = 0; i < sizeof(sfp->f_fsid); i++)
|
|
printf("%02x", ((u_char *)&sfp->f_fsid)[i]);
|
|
}
|
|
}
|
|
(void)printf(")\n");
|
|
}
|
|
|
|
struct statfs *
|
|
getmntpt(const char *name)
|
|
{
|
|
struct statfs *mntbuf;
|
|
int i, mntsize;
|
|
|
|
mntsize = getmntinfo(&mntbuf, MNT_NOWAIT);
|
|
for (i = mntsize - 1; i >= 0; i--) {
|
|
if (strcmp(mntbuf[i].f_mntfromname, name) == 0 ||
|
|
strcmp(mntbuf[i].f_mntonname, name) == 0)
|
|
return (&mntbuf[i]);
|
|
}
|
|
return (NULL);
|
|
}
|
|
|
|
char *
|
|
catopt(char *s0, const char *s1)
|
|
{
|
|
size_t i;
|
|
char *cp;
|
|
|
|
if (s1 == NULL || *s1 == '\0')
|
|
return (s0);
|
|
|
|
if (s0 && *s0) {
|
|
i = strlen(s0) + strlen(s1) + 1 + 1;
|
|
if ((cp = malloc(i)) == NULL)
|
|
errx(1, "malloc failed");
|
|
(void)snprintf(cp, i, "%s,%s", s0, s1);
|
|
} else
|
|
cp = strdup(s1);
|
|
|
|
if (s0)
|
|
free(s0);
|
|
return (cp);
|
|
}
|
|
|
|
void
|
|
mangle(char *options, struct cpa *a)
|
|
{
|
|
char *p, *s, *val;
|
|
|
|
for (s = options; (p = strsep(&s, ",")) != NULL;)
|
|
if (*p != '\0') {
|
|
if (strcmp(p, "noauto") == 0) {
|
|
/*
|
|
* Do not pass noauto option to nmount().
|
|
* or external mount program. noauto is
|
|
* only used to prevent mounting a filesystem
|
|
* when 'mount -a' is specified, and is
|
|
* not a real mount option.
|
|
*/
|
|
continue;
|
|
} else if (strcmp(p, "late") == 0) {
|
|
/*
|
|
* "late" is used to prevent certain file
|
|
* systems from being mounted before late
|
|
* in the boot cycle; for instance,
|
|
* loopback NFS mounts can't be mounted
|
|
* before mountd starts.
|
|
*/
|
|
continue;
|
|
} else if (strncmp(p, "mountprog", 9) == 0) {
|
|
/*
|
|
* "mountprog" is used to force the use of
|
|
* userland mount programs.
|
|
*/
|
|
val = strchr(p, '=');
|
|
if (val != NULL) {
|
|
++val;
|
|
if (*val != '\0')
|
|
mountprog = strdup(val);
|
|
}
|
|
|
|
if (mountprog == NULL) {
|
|
errx(1, "Need value for -o mountprog");
|
|
}
|
|
continue;
|
|
} else if (strcmp(p, "userquota") == 0) {
|
|
continue;
|
|
} else if (strncmp(p, userquotaeq,
|
|
sizeof(userquotaeq) - 1) == 0) {
|
|
continue;
|
|
} else if (strcmp(p, "groupquota") == 0) {
|
|
continue;
|
|
} else if (strncmp(p, groupquotaeq,
|
|
sizeof(groupquotaeq) - 1) == 0) {
|
|
continue;
|
|
} else if (*p == '-') {
|
|
append_arg(a, p);
|
|
p = strchr(p, '=');
|
|
if (p != NULL) {
|
|
*p = '\0';
|
|
append_arg(a, p + 1);
|
|
}
|
|
} else {
|
|
append_arg(a, strdup("-o"));
|
|
append_arg(a, p);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
char *
|
|
update_options(char *opts, char *fstab, int curflags)
|
|
{
|
|
char *o, *p;
|
|
char *cur;
|
|
char *expopt, *newopt, *tmpopt;
|
|
|
|
if (opts == NULL)
|
|
return (strdup(""));
|
|
|
|
/* remove meta options from list */
|
|
remopt(fstab, MOUNT_META_OPTION_FSTAB);
|
|
remopt(fstab, MOUNT_META_OPTION_CURRENT);
|
|
cur = flags2opts(curflags);
|
|
|
|
/*
|
|
* Expand all meta-options passed to us first.
|
|
*/
|
|
expopt = NULL;
|
|
for (p = opts; (o = strsep(&p, ",")) != NULL;) {
|
|
if (strcmp(MOUNT_META_OPTION_FSTAB, o) == 0)
|
|
expopt = catopt(expopt, fstab);
|
|
else if (strcmp(MOUNT_META_OPTION_CURRENT, o) == 0)
|
|
expopt = catopt(expopt, cur);
|
|
else
|
|
expopt = catopt(expopt, o);
|
|
}
|
|
free(cur);
|
|
free(opts);
|
|
|
|
/*
|
|
* Remove previous contradictory arguments. Given option "foo" we
|
|
* remove all the "nofoo" options. Given "nofoo" we remove "nonofoo"
|
|
* and "foo" - so we can deal with possible options like "notice".
|
|
*/
|
|
newopt = NULL;
|
|
for (p = expopt; (o = strsep(&p, ",")) != NULL;) {
|
|
if ((tmpopt = malloc( strlen(o) + 2 + 1 )) == NULL)
|
|
errx(1, "malloc failed");
|
|
|
|
strcpy(tmpopt, "no");
|
|
strcat(tmpopt, o);
|
|
remopt(newopt, tmpopt);
|
|
free(tmpopt);
|
|
|
|
if (strncmp("no", o, 2) == 0)
|
|
remopt(newopt, o+2);
|
|
|
|
newopt = catopt(newopt, o);
|
|
}
|
|
free(expopt);
|
|
|
|
return (newopt);
|
|
}
|
|
|
|
void
|
|
remopt(char *string, const char *opt)
|
|
{
|
|
char *o, *p, *r;
|
|
|
|
if (string == NULL || *string == '\0' || opt == NULL || *opt == '\0')
|
|
return;
|
|
|
|
r = string;
|
|
|
|
for (p = string; (o = strsep(&p, ",")) != NULL;) {
|
|
if (strcmp(opt, o) != 0) {
|
|
if (*r == ',' && *o != '\0')
|
|
r++;
|
|
while ((*r++ = *o++) != '\0')
|
|
;
|
|
*--r = ',';
|
|
}
|
|
}
|
|
*r = '\0';
|
|
}
|
|
|
|
void
|
|
usage(void)
|
|
{
|
|
|
|
(void)fprintf(stderr, "%s\n%s\n%s\n",
|
|
"usage: mount [-adflpruvw] [-F fstab] [-o options] [-t ufs | external_type]",
|
|
" mount [-dfpruvw] special | node",
|
|
" mount [-dfpruvw] [-o options] [-t ufs | external_type] special node");
|
|
exit(1);
|
|
}
|
|
|
|
void
|
|
putfsent(struct statfs *ent)
|
|
{
|
|
struct fstab *fst;
|
|
char *opts;
|
|
int l;
|
|
|
|
opts = flags2opts(ent->f_flags);
|
|
|
|
if (strncmp(ent->f_mntfromname, "<below>", 7) == 0 ||
|
|
strncmp(ent->f_mntfromname, "<above>", 7) == 0) {
|
|
strcpy(ent->f_mntfromname, (strnstr(ent->f_mntfromname, ":", 8)
|
|
+1));
|
|
}
|
|
|
|
/*
|
|
* "rw" is not a real mount option; this is why we print NULL as "rw"
|
|
* if opts is still NULL here.
|
|
*/
|
|
l = strlen(ent->f_mntfromname);
|
|
printf("%s%s%s%s", ent->f_mntfromname,
|
|
l < 8 ? "\t" : "",
|
|
l < 16 ? "\t" : "",
|
|
l < 24 ? "\t" : " ");
|
|
l = strlen(ent->f_mntonname);
|
|
printf("%s%s%s%s", ent->f_mntonname,
|
|
l < 8 ? "\t" : "",
|
|
l < 16 ? "\t" : "",
|
|
l < 24 ? "\t" : " ");
|
|
printf("%s\t", ent->f_fstypename);
|
|
if (opts == NULL) {
|
|
printf("%s\t", "rw");
|
|
} else {
|
|
l = strlen(opts);
|
|
printf("%s%s", opts,
|
|
l < 8 ? "\t" : " ");
|
|
}
|
|
free(opts);
|
|
|
|
if ((fst = getfsspec(ent->f_mntfromname)))
|
|
printf("\t%u %u\n", fst->fs_freq, fst->fs_passno);
|
|
else if ((fst = getfsfile(ent->f_mntonname)))
|
|
printf("\t%u %u\n", fst->fs_freq, fst->fs_passno);
|
|
else if (strcmp(ent->f_fstypename, "ufs") == 0) {
|
|
if (strcmp(ent->f_mntonname, "/") == 0)
|
|
printf("\t1 1\n");
|
|
else
|
|
printf("\t2 2\n");
|
|
} else
|
|
printf("\t0 0\n");
|
|
}
|
|
|
|
|
|
char *
|
|
flags2opts(int flags)
|
|
{
|
|
char *res;
|
|
|
|
res = NULL;
|
|
|
|
if (flags & MNT_RDONLY) res = catopt(res, "ro");
|
|
if (flags & MNT_SYNCHRONOUS) res = catopt(res, "sync");
|
|
if (flags & MNT_NOEXEC) res = catopt(res, "noexec");
|
|
if (flags & MNT_NOSUID) res = catopt(res, "nosuid");
|
|
if (flags & MNT_UNION) res = catopt(res, "union");
|
|
if (flags & MNT_ASYNC) res = catopt(res, "async");
|
|
if (flags & MNT_NOATIME) res = catopt(res, "noatime");
|
|
if (flags & MNT_NOCLUSTERR) res = catopt(res, "noclusterr");
|
|
if (flags & MNT_NOCLUSTERW) res = catopt(res, "noclusterw");
|
|
if (flags & MNT_NOSYMFOLLOW) res = catopt(res, "nosymfollow");
|
|
if (flags & MNT_SUIDDIR) res = catopt(res, "suiddir");
|
|
if (flags & MNT_MULTILABEL) res = catopt(res, "multilabel");
|
|
if (flags & MNT_ACLS) res = catopt(res, "acls");
|
|
if (flags & MNT_NFS4ACLS) res = catopt(res, "nfsv4acls");
|
|
|
|
return (res);
|
|
}
|