adb: Fix backup fallback

* Check for existence of binary first Change-Id: I5c1884655ae031f51cb935221ae7870b016e259d
thehacker911 · Nov 12, 2013 · b32cdd0 · b32cdd0
1 parent de1237a
commit b32cdd0
Showing 1 changed file with 5 additions and 2 deletions.
diff --git a/adb/backup_service.c b/adb/backup_service.c
@@ -126,8 +126,11 @@ int backup_service(BackupOperation op, char* args) {
         adb_close(s[0]);
 
         // off we go
-        execvp("/system/bin/bu", (char * const *)bu_args);
-        execvp("/sbin/bu", (char * const *)bu_args);
+        if (access("/system/bin/bu", F_OK) == 0)
+            execvp("/system/bin/bu", (char * const *)bu_args);
+        else if (access("/sbin/bu", F_OK) == 0)
+            execvp("/sbin/bu", (char * const *)bu_args);
+
         // oops error - close up shop and go home
         fprintf(stderr, "Unable to exec 'bu', bailing\n");
         exit(-1);