fs/squashfs: fix board hang-up when calling .exists()

add missing squashfs function to prevent dangling or null pointers.
For exemple, when calling test [ -e somefile ], squashfs.exists may be
called.

Signed-off-by: Richard Genoud <richard.genoud@posteo.net>
Reviewed-by: Joao Marcos Costa <jmcosta944@gmail.com>

diff --git a/fs/fs.c b/fs/fs.c
index 29ad4d1a695f9ad255638c1dcf32f5dc54c656f5..fb27c910d4f66ba1f1ff85a7e4033030bdfca7bc 100644 (file)
--- a/fs/fs.c
+++ b/fs/fs.c
@@ -287,6 +287,7 @@ static struct fstype_info fstypes[] = {
        {
                .fstype = FS_TYPE_SQUASHFS,
                .name = "squashfs",
+               .null_dev_desc_ok = false,
                .probe = sqfs_probe,
                .opendir = sqfs_opendir,
                .readdir = sqfs_readdir,
@@ -295,6 +296,12 @@ static struct fstype_info fstypes[] = {
                .size = sqfs_size,
                .close = sqfs_close,
                .closedir = sqfs_closedir,
+               .exists = fs_exists_unsupported,
+               .uuid = fs_uuid_unsupported,
+               .write = fs_write_unsupported,
+               .ln = fs_ln_unsupported,
+               .unlink = fs_unlink_unsupported,
+               .mkdir = fs_mkdir_unsupported,
        },
 #endif
        {