btrfs-progs: restore: use bigger buffer for output path name

Signed-off-by: David Sterba <dsterba@suse.cz>

diff --git a/cmds-restore.c b/cmds-restore.c
index 059fbf2..d68f23d 100644 (file)
--- a/cmds-restore.c
+++ b/cmds-restore.c
@@ -1412,7 +1412,7 @@ int cmd_restore(int argc, char **argv)
 {
        struct btrfs_root *root;
        struct btrfs_key key;
-       char dir_name[128];
+       char dir_name[PATH_MAX];
        u64 tree_location = 0;
        u64 fs_location = 0;
        u64 root_objectid = 0;
@@ -1544,6 +1544,11 @@ int cmd_restore(int argc, char **argv)
 
        memset(path_name, 0, PATH_MAX);
 
+       if (strlen(argv[optind + 1]) >= PATH_MAX) {
+               fprintf(stderr, "ERROR: path too long\n");
+               ret = 1;
+               goto out;
+       }
        strncpy(dir_name, argv[optind + 1], sizeof dir_name);
        dir_name[sizeof dir_name - 1] = 0;