extern int mount_main(int argc, char **argv)
{
struct stat statbuf;
char *string_flags = xstrdup("");
char *extra_opts;
int flags = 0;
char *filesystemType = "auto";
int got_filesystemType = 0;
char *device = xmalloc(PATH_MAX);
char *directory = xmalloc(PATH_MAX);
struct mntent *m = NULL;
int all = FALSE;
int fakeIt = FALSE;
int useMtab = TRUE;
int rc = EXIT_FAILURE;
FILE *f = 0;
int opt;
/* Parse options */
while ((opt = getopt(argc, argv, "o:rt:wafnv")) > 0) {
switch (opt) {
case 'o':
parse_mount_options(optarg, &flags, &string_flags);
break;
case 'r':
flags |= MS_RDONLY;
break;
case 't':
filesystemType = optarg;
got_filesystemType = 1;
break;
case 'w':
flags &= ~MS_RDONLY;
break;
case 'a':
all = TRUE;
break;
case 'f':
fakeIt = TRUE;
break;
#ifdef BB_FEATURE_MTAB_SUPPORT
case 'n':
useMtab = FALSE;
break;
#endif
case 'v':
break; /* ignore -v */
}
}
if (!all && optind == argc)
show_mounts(got_filesystemType ? filesystemType : 0);
if (optind < argc) {
/* if device is a filename get its real path */
if (stat(argv[optind], &statbuf) == 0) {
char *tmp = simplify_path(argv[optind]);
safe_strncpy(device, tmp, PATH_MAX);
} else {
safe_strncpy(device, argv[optind], PATH_MAX);
}
}
if (optind + 1 < argc)
directory = simplify_path(argv[optind + 1]);
if (all || optind + 1 == argc) {
f = setmntent("/etc/fstab", "r");
if (f == NULL)
perror_msg_and_die( "\nCannot read /etc/fstab");
while ((m = getmntent(f)) != NULL) {
if (! all && optind + 1 == argc && (
(strcmp(device, m->mnt_fsname) != 0) &&
(strcmp(device, m->mnt_dir) != 0) ) ) {
continue;
}
if (all && ( // If we're mounting 'all'
(strstr(m->mnt_opts, "noauto")) || // and the file system isn't noauto,
(strstr(m->mnt_type, "swap")) || // and isn't swap or nfs, then mount it
(strstr(m->mnt_type, "nfs")) ) ) {
continue;
}
if (all || flags == 0) { // Allow single mount to override fstab flags
flags = 0;
string_flags[0] = 0;
parse_mount_options(m->mnt_opts, &flags, &string_flags);
}
strcpy(device, m->mnt_fsname);
strcpy(directory, m->mnt_dir);
filesystemType = xstrdup(m->mnt_type);
singlemount:
extra_opts = string_flags;
rc = EXIT_SUCCESS;
#ifdef BB_NFSMOUNT
if (strchr(device, ':') != NULL) {
filesystemType = "nfs";
if (nfsmount (device, directory, &flags, &extra_opts,
&string_flags, 1)) {
perror_msg("nfsmount failed");
rc = EXIT_FAILURE;
}
}
#endif
if (!mount_one(device, directory, filesystemType, flags,
string_flags, useMtab, fakeIt, extra_opts, TRUE, all))
rc = EXIT_FAILURE;
if (! all)
break;
}
if (f)
endmntent(f);
if (! all && f && m == NULL)
fprintf(stderr, "Can't find %s in /etc/fstab\n", device);
return rc;
}
goto singlemount;
}
static int singlemount(struct mntent *mp, int ignore_busy)
{
int rc = -1, vfsflags;
char *loopFile = 0, *filteropts = 0;
llist_t *fl = 0;
struct stat st;
vfsflags = parse_mount_options(mp->mnt_opts, &filteropts);
// Treat fstype "auto" as unspecified.
if (mp->mnt_type && !strcmp(mp->mnt_type,"auto")) mp->mnt_type = 0;
// Might this be an NFS filesystem?
if (ENABLE_FEATURE_MOUNT_NFS &&
(!mp->mnt_type || !strcmp(mp->mnt_type,"nfs")) &&
strchr(mp->mnt_fsname, ':') != NULL)
{
if (nfsmount(mp->mnt_fsname, mp->mnt_dir, &vfsflags, &filteropts, 1)) {
bb_perror_msg("nfsmount failed");
goto report_error;
} else {
// Strangely enough, nfsmount() doesn't actually mount() anything.
mp->mnt_type = "nfs";
rc = mount_it_now(mp, vfsflags, filteropts);
if (ENABLE_FEATURE_CLEAN_UP) free(filteropts);
goto report_error;
}
}
// Look at the file. (Not found isn't a failure for remount, or for
// a synthetic filesystem like proc or sysfs.)
if (stat(mp->mnt_fsname, &st));
else if (!(vfsflags & (MS_REMOUNT | MS_BIND | MS_MOVE))) {
// Do we need to allocate a loopback device for it?
if (ENABLE_FEATURE_MOUNT_LOOP && S_ISREG(st.st_mode)) {
loopFile = bb_simplify_path(mp->mnt_fsname);
mp->mnt_fsname = 0;
switch(set_loop(&(mp->mnt_fsname), loopFile, 0)) {
case 0:
case 1:
break;
default:
bb_error_msg( errno == EPERM || errno == EACCES
? bb_msg_perm_denied_are_you_root
: "Couldn't setup loop device");
return errno;
}
// Autodetect bind mounts
} else if (S_ISDIR(st.st_mode) && !mp->mnt_type) vfsflags |= MS_BIND;
}
/* If we know the fstype (or don't need to), jump straight
* to the actual mount. */
if (mp->mnt_type || (vfsflags & (MS_REMOUNT | MS_BIND | MS_MOVE)))
rc = mount_it_now(mp, vfsflags, filteropts);
// Loop through filesystem types until mount succeeds or we run out
else {
/* Initialize list of block backed filesystems. This has to be
* done here so that during "mount -a", mounts after /proc shows up
* can autodetect. */
if (!fslist) {
fslist = get_block_backed_filesystems();
if (ENABLE_FEATURE_CLEAN_UP && fslist)
atexit(delete_block_backed_filesystems);
}
for (fl = fslist; fl; fl = fl->link) {
mp->mnt_type = fl->data;
if (!(rc = mount_it_now(mp,vfsflags, filteropts))) break;
mp->mnt_type = 0;
}
}
if (ENABLE_FEATURE_CLEAN_UP) free(filteropts);
// If mount failed, clean up loop file (if any).
if (ENABLE_FEATURE_MOUNT_LOOP && rc && loopFile) {
del_loop(mp->mnt_fsname);
if (ENABLE_FEATURE_CLEAN_UP) {
free(loopFile);
free(mp->mnt_fsname);
}
}
report_error:
if (rc && errno == EBUSY && ignore_busy) rc = 0;
if (rc < 0)
bb_perror_msg("Mounting %s on %s failed", mp->mnt_fsname, mp->mnt_dir);
return rc;
}
