fstools: check existing filesystem state before writing the new one

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

diff --git a/libfstools/overlay.c b/libfstools/overlay.c
index 7f69606..cdac23e 100644 (file)
--- a/libfstools/overlay.c
+++ b/libfstools/overlay.c
@@ -311,6 +311,9 @@ int fs_state_set(const char *dir, enum fs_state state)
        char valstr[16];
        char *path;
 
+       if (fs_state_get(dir) == state)
+               return 0;
+
        path = alloca(strlen(dir) + 1 + sizeof("/.fs_state"));
        sprintf(path, "%s/.fs_state", dir);
        unlink(path);