/* returns: error = -1, success = 0 , unknown = 1 */
static int is_vers4(struct libmnt_context *cxt)
{
struct libmnt_fs *fs = mnt_context_get_fs(cxt);
struct libmnt_table *tb = NULL;
const char *src = mnt_context_get_source(cxt),
*tgt = mnt_context_get_target(cxt);
int rc = 1;
if (!src || !tgt)
return -1;
if (!mnt_fs_is_kernel(fs)) {
struct libmnt_table *tb = mnt_new_table_from_file("/proc/mounts");
if (!tb)
return -1;
fs = mnt_table_find_pair(tb, src, tgt, MNT_ITER_BACKWARD);
}
if (fs) {
const char *type = mnt_fs_get_fstype(fs);
if (type && strcmp(type, "nfs4") == 0)
rc = 0;
}
mnt_free_table(tb);
return rc;
}
static int dir_to_device(const char *spec, dev_t *dev)
{
struct libmnt_table *tb = mnt_new_table_from_file("/proc/self/mountinfo");
struct libmnt_fs *fs;
struct libmnt_cache *cache;
int rc = -1;
if (!tb) {
/*
* Fallback. Traditional way to detect mountpoints. This way
* is independent on /proc, but not able to detect bind mounts.
*/
struct stat pst, st;
char buf[PATH_MAX], *cn;
int len;
if (stat(spec, &st) != 0)
return -1;
cn = mnt_resolve_path(spec, NULL); /* canonicalize */
len = snprintf(buf, sizeof(buf), "%s/..", cn ? cn : spec);
free(cn);
if (len < 0 || (size_t) len + 1 > sizeof(buf))
return -1;
if (stat(buf, &pst) !=0)
return -1;
if ((st.st_dev != pst.st_dev) ||
(st.st_dev == pst.st_dev && st.st_ino == pst.st_ino)) {
*dev = st.st_dev;
return 0;
}
return -1;
}
/* to canonicalize all necessary paths */
cache = mnt_new_cache();
mnt_table_set_cache(tb, cache);
fs = mnt_table_find_target(tb, spec, MNT_ITER_BACKWARD);
if (fs && mnt_fs_get_target(fs)) {
*dev = mnt_fs_get_devno(fs);
rc = 0;
}
mnt_free_table(tb);
mnt_free_cache(cache);
return rc;
}
static int dir_to_device(struct mountpoint_control *ctl)
{
struct libmnt_table *tb = mnt_new_table_from_file(_PATH_PROC_MOUNTINFO);
struct libmnt_fs *fs;
struct libmnt_cache *cache;
int rc = -1;
if (!tb) {
/*
* Fallback. Traditional way to detect mountpoints. This way
* is independent on /proc, but not able to detect bind mounts.
*/
struct stat pst;
char buf[PATH_MAX], *cn;
int len;
cn = mnt_resolve_path(ctl->path, NULL); /* canonicalize */
len = snprintf(buf, sizeof(buf), "%s/..", cn ? cn : ctl->path);
free(cn);
if (len < 0 || (size_t) len >= sizeof(buf))
return -1;
if (stat(buf, &pst) !=0)
return -1;
if ((ctl->st.st_dev != pst.st_dev) ||
(ctl->st.st_dev == pst.st_dev && ctl->st.st_ino == pst.st_ino)) {
ctl->dev = ctl->st.st_dev;
return 0;
}
return -1;
}
/* to canonicalize all necessary paths */
cache = mnt_new_cache();
mnt_table_set_cache(tb, cache);
mnt_unref_cache(cache);
fs = mnt_table_find_target(tb, ctl->path, MNT_ITER_BACKWARD);
if (fs && mnt_fs_get_target(fs)) {
ctl->dev = mnt_fs_get_devno(fs);
rc = 0;
}
mnt_unref_table(tb);
return rc;
}
static char *dir_to_device(const char *spec)
{
struct libmnt_table *tb = mnt_new_table_from_file("/proc/self/mountinfo");
struct libmnt_fs *fs;
char *res = NULL;
if (!tb)
return NULL;
fs = mnt_table_find_target(tb, spec, MNT_ITER_BACKWARD);
if (fs && mnt_fs_get_target(fs))
res = xstrdup(mnt_fs_get_source(fs));
mnt_free_table(tb);
return res;
}
int main(const int argc, const char* argv[]) {
if (argc == 2) {
if (strcmp(argv[1], "--verbose") == 0) {
verbose_mode = 1;
}
}
prepare();
clearSupplementaryGroups();
selfCheck();
struct libmnt_table* mt = mnt_new_table_from_file("/opt/xware_desktop/mounts");
if (mt == NULL) {
fprintf(stderr, "mnt_new_table_from_file failed.\n");
exit(EXIT_FAILURE);
}
struct libmnt_iter* itr = mnt_new_iter(MNT_ITER_FORWARD);
struct libmnt_fs* fs = NULL;
while(1) {
int tmp = mnt_table_find_next_fs(mt, itr, &matchAll, NULL, &fs);
if (tmp < 0) { // error
fprintf(stderr, "mnt_table_find_next_fs failed.\n");
break;
} else {
if (tmp == 1) { // reach EOF
break;
}
const char* target = mnt_fs_get_target(fs);
if (target == NULL) {
fprintf(stderr, "mnt_fs_get_target failed.\n");
} else {
printf("%s%s%s\n", BOLD, target, NOSTYLE);
printf("================================\n");
if (checkDirXPermissions(target)) {
checkTargetDirPermissions(target);
}
printf("\n");
}
}
}
printf("%s", NOSTYLE);
mnt_free_fs(fs);
mnt_free_iter(itr);
mnt_free_table(mt);
return 0;
}
int main (int argc, char *argv[])
{
struct libmnt_fs *fs;
struct libmnt_table *tab;
mnt_init_debug(0xffff);
tab = mnt_new_table_from_file("/proc/self/mounts");
fs = mnt_table_find_target(tab, argv[2], MNT_ITER_BACKWARD);
char *source = mnt_fs_get_source(fs);
if (strcmp(source, argv[1]) == 0)
printf("is mounted\n");
else
printf("could not find fs in tab\n");
mnt_free_table(tab);
#if 0
int rc;
struct libmnt_fs *fs;
struct libmnt_context *cxt = mnt_new_context();
mnt_init_debug(0xffff);
mnt_context_set_source(cxt, argv[1]);
mnt_context_set_target(cxt, argv[2]);
fs = mnt_context_get_fs(cxt);
if (fs != NULL)
{
if (mnt_context_is_fs_mounted(cxt, fs, &rc))
rc = 1;
else
printf("can't find fs in mtab\n");
}
else
printf("Can't get fs from mnt context\n");
mnt_free_context(cxt);
#endif
return 0;
}
/*
* Sets fs-root and fs-type to @upd->fs according to the @fs template and
* @mountfalgs. For MS_BIND mountflag it reads information about source
* filesystem from /proc/self/mountinfo.
*/
static int set_fs_root(struct libmnt_update *upd, struct libmnt_fs *fs,
unsigned long mountflags)
{
struct libmnt_fs *src_fs;
char *fsroot = NULL;
const char *src;
int rc = 0;
DBG(UPDATE, mnt_debug("setting FS root"));
assert(upd);
assert(upd->fs);
assert(fs);
if (mountflags & MS_BIND) {
if (!upd->mountinfo)
upd->mountinfo = mnt_new_table_from_file(_PATH_PROC_MOUNTINFO);
src = mnt_fs_get_srcpath(fs);
if (src) {
rc = mnt_fs_set_bindsrc(upd->fs, src);
if (rc)
goto err;
}
}
src_fs = mnt_table_get_fs_root(upd->mountinfo, fs,
mountflags, &fsroot);
if (src_fs) {
src = mnt_fs_get_srcpath(src_fs);
rc = mnt_fs_set_source(upd->fs, src);
if (rc)
goto err;
mnt_fs_set_fstype(upd->fs, mnt_fs_get_fstype(src_fs));
}
upd->fs->root = fsroot;
return 0;
err:
free(fsroot);
return rc;
}
