extlinux: put set_attributes() back to ext2_fat_install_file().

rewrite_boot_image() wraps the logic from previous
ext2_fat_install_file(). The deleted lines includes
the set_attributes(), while it is actually not
within the rewrite_boot_image().

We add set_attributes() and some helper judgement just
as what we do in xfs_install_file().

Signed-off-by: Chen Baozi <baozich@gmail.com>
Signed-off-by: Paulo Alcantara <pcacjr@zytor.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/extlinux/main.c b/extlinux/main.c
index a9531d5c..bbcc8db3 100644
--- a/extlinux/main.c
+++ b/extlinux/main.c
@@ -510,6 +510,12 @@ int ext2_fat_install_file(const char *path, int devfd, struct stat *rst)
     close(fd);
 
     fd = rewrite_boot_image(devfd, file);
+    if (fd < 0)
+	goto bail;
+
+    /* Attempt to set immutable flag and remove all write access */
+    /* Only set immutable flag if file is owned by root */
+    set_attributes(fd);
 
     if (fstat(fd, rst)) {
 	perror(file);