system: break infite loop resolving rootfs type

When running procd outside of OpenWrt, e.g. for debugging or research situations inside a container environment, an inifite loop can occur when trying to determine the rootfs type. Make sure that doesn't happen. Signed-off-by: Daniel Golle <[email protected]>
openwrt · Feb 24, 2024 · 1901aba · 1901aba
1 parent 2f94972
commit 1901aba
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/system.c b/system.c
@@ -94,8 +94,12 @@ static const char *system_rootfs_type(void) {
 			 * lowerdir, as that can point to "/" being a previous
 			 * overlay mount (after firstboot or sysuprade config
 			 * restore). Hence just assume the lowerdir is "/rom" and
-			 * restart searching for that instead.
+			 * restart searching for that instead if that's not
+			 * already the case.
 			 */
+			if (!strcmp(mp, "/rom"))
+				break;
+
 			mp = "/rom";
 			fseek(mounts, 0, SEEK_SET);
 			continue;