misc: use libmnt_cache reference counting

Signed-off-by: Karel Zak <kzak@redhat.com>

disk-utils/fsck.c

@@ -1576,7 +1576,7 @@ int main(int argc, char *argv[])
 	}
 	status |= wait_many(FLAG_WAIT_ALL);
 	free(fsck_path);
-	mnt_free_cache(mntcache);
+	mnt_unref_cache(mntcache);
 	mnt_free_table(fstab);
 	mnt_free_table(mtab);
 	return status;

misc-utils/findmnt.c

@@ -1497,7 +1497,7 @@ leave:
 	tt_free_table(tt);
 
 	mnt_free_table(tb);
-	mnt_free_cache(cache);
+	mnt_unref_cache(cache);
 	free(tabfiles);
 #ifdef HAVE_LIBUDEV
 	udev_unref(udev);

misc-utils/lsblk.c

@@ -1606,7 +1606,7 @@ leave:
 	tt_free_table(lsblk->tt);
 	mnt_free_table(mtab);
 	mnt_free_table(swaps);
-	mnt_free_cache(mntcache);
+	mnt_unref_cache(mntcache);
 #ifdef HAVE_LIBUDEV
 	udev_unref(udev);
 #endif

sys-utils/eject.c

@@ -729,7 +729,8 @@ static int device_get_mountpoint(char **devname, char **mnt)
 		if (!mtab)
 			err(EXIT_FAILURE, _("failed to initialize libmount table"));
 
-		cache = mnt_new_cache();
+		if (!cache)
+			cache = mnt_new_cache();
 		mnt_table_set_cache(mtab, cache);
 
 		if (p_option)
@@ -1147,7 +1148,7 @@ int main(int argc, char **argv)
 	free(mountpoint);
 
 	mnt_free_table(mtab);
-	mnt_free_cache(cache);
+	mnt_unref_cache(cache);
 
 	return EXIT_SUCCESS;
 }

sys-utils/mount.c

@@ -163,7 +163,7 @@ static void print_all(struct libmnt_context *cxt, char *pattern, int show_label)
 		free(xsrc);
 	}
 
-	mnt_free_cache(cache);
+	mnt_unref_cache(cache);
 	mnt_free_iter(itr);
 }
 
@@ -990,8 +990,7 @@ int main(int argc, char **argv)
 		 * make a connection between the fstab and the canonicalization
 		 * cache.
 		 */
-		struct libmnt_cache *cache = mnt_context_get_cache(cxt);
-		mnt_table_set_cache(fstab, cache);
+		mnt_table_set_cache(fstab, mnt_context_get_cache(cxt));
 	}
 
 	if (!mnt_context_get_source(cxt) &&

sys-utils/mountpoint.c

@@ -83,6 +83,7 @@ static int dir_to_device(const char *spec, dev_t *dev)
 	/* 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, spec, MNT_ITER_BACKWARD);
 	if (fs && mnt_fs_get_target(fs)) {
@@ -91,7 +92,6 @@ static int dir_to_device(const char *spec, dev_t *dev)
 	}
 
 	mnt_free_table(tb);
-	mnt_free_cache(cache);
 	return rc;
 }
 

sys-utils/swapoff.c

@@ -190,7 +190,7 @@ int main(int argc, char *argv[])
 		status |= swapoff_all();
 
 	free_tables();
-	mnt_free_cache(mntcache);
+	mnt_unref_cache(mntcache);
 
 	return status;
 }

sys-utils/swapon.c

@@ -816,7 +816,7 @@ int main(int argc, char *argv[])
 		status |= do_swapon(*argv++, priority, discard, !CANONIC);
 
 	free_tables();
-	mnt_free_cache(mntcache);
+	mnt_unref_cache(mntcache);
 
 	return status;
 }