872b698bd4
Mainly focus on files that use BSD 3-Clause license. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. Special thanks to Wind River for providing access to "The Duke of Highlander" tool: an older (2014) run over FreeBSD tree was useful as a starting point.
969 lines
23 KiB
C
969 lines
23 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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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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* 3. 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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static 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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uint64_t 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_SUJ, "journaled 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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{ MNT_AUTOMOUNTED, "automounted" },
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{ MNT_VERIFIED, "verified" },
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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", "nfs",
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"nullfs", "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, failok, mntsize, rval, have_fstab, ro;
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int onlylate;
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char *cp, *ep, *options;
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all = init_flags = late = onlylate = 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:fLlno: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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onlylate = 1;
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late = 1;
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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 'n':
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/* For compatibility with the Linux version of mount. */
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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") && onlylate)
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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 (hasopt(fs->fs_mntops, "failok"))
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failok = 1;
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else
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failok = 0;
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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) && !failok)
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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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strcmp(fs->fs_vfstype,
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mntbuf->f_fstypename) == 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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*/
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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 */
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if (realpath(fs->fs_file, realfsfile) == NULL) {
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/* 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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* Consider the filesystem to be mounted if:
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* It has the same mountpoint as a mounted filesytem, and
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* It has the same type as that same mounted filesystem, and
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* It has the same device name as that same mounted filesystem, OR
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* It is a nonremountable filesystem
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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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strcmp(fs->fs_vfstype, mntbuf[i].f_fstypename) == 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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}
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int
|
|
isremountable(const char *vfsname)
|
|
{
|
|
const char **cp;
|
|
|
|
for (cp = remountable_fs_names; *cp; cp++)
|
|
if (strcmp(*cp, vfsname) == 0)
|
|
return (1);
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
hasopt(const char *mntopts, const char *option)
|
|
{
|
|
int negative, found;
|
|
char *opt, *optbuf;
|
|
|
|
if (option[0] == 'n' && option[1] == 'o') {
|
|
negative = 1;
|
|
option += 2;
|
|
} else
|
|
negative = 0;
|
|
optbuf = strdup(mntopts);
|
|
found = 0;
|
|
for (opt = optbuf; (opt = strtok(opt, ",")) != NULL; opt = NULL) {
|
|
if (opt[0] == 'n' && opt[1] == 'o') {
|
|
if (!strcasecmp(opt + 2, option))
|
|
found = negative;
|
|
} else if (!strcasecmp(opt, option))
|
|
found = !negative;
|
|
}
|
|
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) */
|
|
if (checkpath(name, mntpath) != 0) {
|
|
warn("%s", mntpath);
|
|
return (1);
|
|
}
|
|
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)
|
|
strlcpy(execname, mountprog, sizeof(execname));
|
|
|
|
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");
|
|
free(optbuf);
|
|
free(mountprog);
|
|
mountprog = NULL;
|
|
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);
|
|
free(mountprog);
|
|
mountprog = NULL;
|
|
|
|
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)
|
|
{
|
|
uint64_t 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 != 0 && o->o_opt != 0; 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)
|
|
{
|
|
char *cp;
|
|
|
|
if (s1 == NULL || *s1 == '\0')
|
|
return (s0);
|
|
|
|
if (s0 && *s0) {
|
|
if (asprintf(&cp, "%s,%s", s0, s1) == -1)
|
|
errx(1, "asprintf failed");
|
|
} 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 (strcmp(p, "failok") == 0) {
|
|
/*
|
|
* "failok" is used to prevent certain file
|
|
* systems from being causing the system to
|
|
* drop into single user mode in the boot
|
|
* cycle, and is not a real mount option.
|
|
*/
|
|
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, *rw;
|
|
int l;
|
|
|
|
opts = NULL;
|
|
/* flags2opts() doesn't return the "rw" option. */
|
|
if ((ent->f_flags & MNT_RDONLY) != 0)
|
|
rw = NULL;
|
|
else
|
|
rw = catopt(NULL, "rw");
|
|
|
|
opts = flags2opts(ent->f_flags);
|
|
opts = catopt(rw, opts);
|
|
|
|
if (strncmp(ent->f_mntfromname, "<below>", 7) == 0 ||
|
|
strncmp(ent->f_mntfromname, "<above>", 7) == 0) {
|
|
strlcpy(ent->f_mntfromname,
|
|
(strnstr(ent->f_mntfromname, ":", 8) +1),
|
|
sizeof(ent->f_mntfromname));
|
|
}
|
|
|
|
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);
|
|
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);
|
|
}
|