#include <sys/param.h>
#include <sys/mount.h>
#include <sys/wait.h>
#include <err.h>
#include <errno.h>
#include <fstab.h>
#include <pwd.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "pathnames.h"
int debug, verbose;
int checkvfsname __P((const char *, const char **));
char *catopt __P((char *, const char *));
struct statfs
*getmntpt __P((const char *));
int hasopt __P((const char *, const char *));
int ismounted __P((const char *, const char *));
const char
**makevfslist __P((char *));
void mangle __P((char *, int *, const char **));
int mountfs __P((const char *, const char *, const char *,
int, const char *, const char *));
void prmount __P((struct statfs *));
void usage __P((void));
int mount_ufs __P((int, char * const *));
static struct opt {
int o_opt;
const char *o_name;
} optnames[] = {
{ MNT_ASYNC, "asynchronous" },
{ MNT_EXPORTED, "NFS exported" },
{ MNT_LOCAL, "local" },
{ MNT_NODEV, "nodev" },
{ MNT_NOEXEC, "noexec" },
{ MNT_NOSUID, "nosuid" },
{ MNT_QUOTA, "with quotas" },
{ MNT_RDONLY, "read-only" },
{ MNT_SYNCHRONOUS, "synchronous" },
{ MNT_UNION, "union" },
{ MNT_AUTOMOUNTED, "automounted" },
{ MNT_JOURNALED, "journaled" },
{ MNT_DEFWRITE, "defwrite" },
{ MNT_IGNORE_OWNERSHIP, "noowners" },
{ MNT_NOATIME, "noatime" },
{ MNT_QUARANTINE, "quarantine" },
{ 0, NULL }
};
int
main(argc, argv)
int argc;
char * const argv[];
{
const char *mntfromname, **vfslist, *vfstype;
struct fstab *fs;
struct statfs *mntbuf;
int all, ch, i, init_flags, mntsize, rval;
char *options;
all = init_flags = 0;
options = NULL;
vfslist = NULL;
vfstype = "ufs";
while ((ch = getopt(argc, argv, "adfo:rwt:uv")) != EOF)
switch (ch) {
case 'a':
all = 1;
break;
case 'd':
debug = 1;
break;
case 'f':
init_flags |= MNT_FORCE;
break;
case 'o':
if (*optarg)
options = catopt(options, optarg);
break;
case 'r':
init_flags |= MNT_RDONLY;
break;
case 't':
if (vfslist != NULL)
errx(1, "only one -t option may be specified.");
vfslist = makevfslist(optarg);
vfstype = optarg;
break;
case 'u':
init_flags |= MNT_UPDATE;
break;
case 'v':
verbose = 1;
break;
case 'w':
init_flags &= ~MNT_RDONLY;
break;
case '?':
default:
usage();
}
argc -= optind;
argv += optind;
#define BADTYPE(type) \
(strcmp(type, FSTAB_RO) && \
strcmp(type, FSTAB_RW) && strcmp(type, FSTAB_RQ))
rval = 0;
switch (argc) {
case 0:
if (all) {
setfsent();
while ((fs = getfsent()) != NULL) {
if (BADTYPE(fs->fs_type))
continue;
if (checkvfsname(fs->fs_vfstype, vfslist))
continue;
if (hasopt(fs->fs_mntops, "noauto"))
continue;
if (!strcmp(fs->fs_vfstype, "nfs")) {
if (hasopt(fs->fs_mntops, "net"))
continue;
if (fs->fs_spec == NULL ||
fs->fs_file == NULL ||
ismounted(fs->fs_spec, fs->fs_file))
continue;
}
if (mountfs(fs->fs_vfstype, fs->fs_spec,
fs->fs_file, init_flags, options,
fs->fs_mntops))
rval = 1;
}
endfsent();
} else {
if ((mntsize = getmntinfo(&mntbuf, MNT_NOWAIT)) == 0)
err(1, "getmntinfo");
for (i = 0; i < mntsize; i++) {
if (checkvfsname(mntbuf[i].f_fstypename, vfslist))
continue;
prmount(&mntbuf[i]);
}
}
exit(rval);
case 1:
if (vfslist != NULL)
usage();
if (init_flags & MNT_UPDATE) {
if ((mntbuf = getmntpt(*argv)) == NULL)
errx(1,
"unknown special file or file system %s.",
*argv);
if ((fs = getfsfile(mntbuf->f_mntonname)) != NULL)
mntfromname = fs->fs_spec;
else
mntfromname = mntbuf->f_mntfromname;
rval = mountfs(mntbuf->f_fstypename, mntfromname,
mntbuf->f_mntonname, init_flags, options, 0);
break;
}
if ((fs = getfsfile(*argv)) == NULL &&
(fs = getfsspec(*argv)) == NULL)
errx(1, "%s: unknown special file or file system.",
*argv);
if (BADTYPE(fs->fs_type))
errx(1, "%s has unknown file system type.",
*argv);
if (!strcmp(fs->fs_vfstype, "nfs")) {
if (hasopt(fs->fs_mntops, "net"))
errx(1, "%s is owned by the automounter.", *argv);
if (ismounted(fs->fs_spec, fs->fs_file))
errx(1, "%s is already mounted at %s.",
fs->fs_spec, fs->fs_file);
}
rval = mountfs(fs->fs_vfstype, fs->fs_spec, fs->fs_file,
init_flags, options, fs->fs_mntops);
break;
case 2:
if (vfslist == NULL && strpbrk(argv[0], ":@") != NULL) {
vfstype = "nfs";
if (ismounted(argv[0], argv[1]))
errx(1, "%s is already mounted at %s.",
argv[0], argv[1]);
}
rval = mountfs(vfstype,
argv[0], argv[1], init_flags, options, NULL);
break;
default:
usage();
}
exit(rval);
}
int
hasopt(mntopts, option)
const char *mntopts, *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);
}
int
ismounted(fs_spec, fs_file)
const char *fs_spec, *fs_file;
{
int i, mntsize;
struct statfs *mntbuf;
if ((mntsize = getmntinfo(&mntbuf, MNT_NOWAIT)) == 0)
err(1, "getmntinfo");
for (i = 0; i < mntsize; i++) {
if (strcmp(mntbuf[i].f_mntfromname, fs_spec))
continue;
if (strcmp(mntbuf[i].f_mntonname, fs_file))
continue;
return 1;
}
return 0;
}
int
mountfs(vfstype, spec, name, flags, options, mntopts)
const char *vfstype, *spec, *name, *options, *mntopts;
int flags;
{
static const char *edirs[] = {
_PATH_SBIN,
_PATH_USRSBIN,
NULL
};
const char *argv[100], **edir;
struct statfs sf;
pid_t pid;
int argc, i, status;
char *optbuf, execname[MAXPATHLEN + 1], mntpath[MAXPATHLEN];
if (realpath(name, mntpath) == NULL) {
warn("realpath %s", mntpath);
return (1);
}
name = mntpath;
if (mntopts == NULL)
mntopts = "";
if (options == NULL) {
if (*mntopts == '\0') {
options = "rw";
} else {
options = mntopts;
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");
if (flags & MNT_UPDATE)
optbuf = catopt(optbuf, "update");
argc = 0;
argv[argc++] = vfstype;
mangle(optbuf, &argc, argv);
argv[argc++] = spec;
argv[argc++] = name;
argv[argc] = NULL;
if (debug) {
(void)printf("exec: mount_%s", vfstype);
for (i = 1; i < argc; i++)
(void)printf(" %s", argv[i]);
(void)printf("\n");
return (0);
}
switch (pid = fork()) {
case -1:
warn("fork");
free(optbuf);
return (1);
case 0:
if (strcmp(vfstype, "ufs") == 0)
exit(mount_ufs(argc, (char * const *) argv));
edir = edirs;
do {
(void)snprintf(execname,
sizeof(execname), "%s/mount_%s", *edir, vfstype);
argv[0] = execname;
execv(execname, (char * const *)argv);
if (errno != ENOENT)
warn("exec %s for %s", execname, name);
} while (*++edir != NULL);
if (errno == ENOENT)
warn("exec %s for %s", execname, name);
exit(1);
default:
free(optbuf);
if (waitpid(pid, &status, 0) < 0) {
warn("waitpid");
return (1);
}
if (WIFEXITED(status)) {
if (WEXITSTATUS(status) != 0)
return (WEXITSTATUS(status));
} else if (WIFSIGNALED(status)) {
warnx("%s: %s", name, sys_siglist[WTERMSIG(status)]);
return (1);
}
if (verbose) {
if (statfs(name, &sf) < 0) {
warn("statfs %s", name);
return (1);
}
prmount(&sf);
}
break;
}
return (0);
}
void
prmount(sfp)
struct statfs *sfp;
{
int flags;
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;
}
if (sfp->f_owner) {
(void)printf(", mounted by ");
if ((pw = getpwuid(sfp->f_owner)) != NULL)
(void)printf("%s", pw->pw_name);
else
(void)printf("%d", sfp->f_owner);
}
(void)printf(")\n");
}
struct statfs *
getmntpt(name)
const char *name;
{
struct statfs *mntbuf;
int i, mntsize;
mntsize = getmntinfo(&mntbuf, MNT_NOWAIT);
for (i = 0; i < mntsize; i++)
if (strcmp(mntbuf[i].f_mntfromname, name) == 0 ||
strcmp(mntbuf[i].f_mntonname, name) == 0)
return (&mntbuf[i]);
return (NULL);
}
char *
catopt(s0, s1)
char *s0;
const char *s1;
{
size_t i;
char *cp;
if (s0 && *s0) {
i = strlen(s0) + strlen(s1) + 1 + 1;
if ((cp = malloc(i)) == NULL)
err(1, NULL);
(void)snprintf(cp, i, "%s,%s", s0, s1);
} else
cp = strdup(s1);
if (s0)
free(s0);
return (cp);
}
void
mangle(options, argcp, argv)
char *options;
int *argcp;
const char **argv;
{
char *p, *s;
int argc;
argc = *argcp;
for (s = options; (p = strsep(&s, ",")) != NULL;)
if (*p != '\0')
if (*p == '-') {
argv[argc++] = p;
p = strchr(p, '=');
if (p) {
*p = '\0';
argv[argc++] = p+1;
}
} else if (strcmp(p, "rw") != 0) {
argv[argc++] = "-o";
argv[argc++] = p;
}
*argcp = argc;
}
void
usage()
{
(void)fprintf(stderr,
"usage: mount %s %s\n mount %s\n mount %s\n",
"[-dfruvw] [-o options] [-t ufs | external_type]",
"special node",
"[-adfruvw] [-t ufs | external_type]",
"[-dfruvw] special | node");
exit(1);
}