overlay: fix compilation with glibc

[project/fstools.git] / libfstools / overlay.c

diff --git a/libfstools/overlay.c b/libfstools/overlay.c
index 0187a55..1d69f5a 100644 (file)
--- a/libfstools/overlay.c
+++ b/libfstools/overlay.c
@@ -257,7 +257,8 @@ jffs2_switch(struct volume *v)
 
                /* try hard to be in sync */
                ULOG_INFO("syncronizing overlay\n");
-               system("cp -a /tmp/root/upper/* / 2>/dev/null");
+               if (system("cp -a /tmp/root/upper/* / 2>/dev/null"))
+                       ULOG_ERR("failed to sync jffs2 overlay\n");
                break;
 
        case FS_EXT4: