btrfs-progs: use on-stack buffer in __ino_to_path_fd

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

diff --git a/cmds-inspect.c b/cmds-inspect.c
index 40ab49b..c2bb862 100644 (file)
--- a/cmds-inspect.c
+++ b/cmds-inspect.c
@@ -42,15 +42,11 @@ static int __ino_to_path_fd(u64 inum, int fd, int verbose, const char *prepend)
        int ret;
        int i;
        struct btrfs_ioctl_ino_path_args ipa;
-       struct btrfs_data_container *fspath;
-
-       fspath = malloc(4096);
-       if (!fspath)
-               return -ENOMEM;
+       struct btrfs_data_container fspath[PATH_MAX];
 
        memset(fspath, 0, sizeof(*fspath));
        ipa.inum = inum;
-       ipa.size = 4096;
+       ipa.size = PATH_MAX;
        ipa.fspath = ptr_to_u64(fspath);
 
        ret = ioctl(fd, BTRFS_IOC_INO_PATHS, &ipa);
@@ -79,7 +75,6 @@ static int __ino_to_path_fd(u64 inum, int fd, int verbose, const char *prepend)
        }
 
 out:
-       free(fspath);
        return !!ret;
 }