btrfs-progs: Add minimum device size check

[platform/upstream/btrfs-progs.git] / utils.c

diff --git a/utils.c b/utils.c
index 46c3a43..c139eb2 100644 (file)
--- a/utils.c
+++ b/utils.c
@@ -2344,3 +2344,23 @@ int find_mount_root(const char *path, char **mount_root)
        free(longest_match);
        return ret;
 }
+
+int test_minimum_size(const char *file, u32 leafsize)
+{
+       int fd;
+       struct stat statbuf;
+
+       fd = open(file, O_RDONLY);
+       if (fd < 0)
+               return -errno;
+       if (stat(file, &statbuf) < 0) {
+               close(fd);
+               return -errno;
+       }
+       if (btrfs_device_size(fd, &statbuf) < btrfs_min_dev_size(leafsize)) {
+               close(fd);
+               return 1;
+       }
+       close(fd);
+       return 0;
+}