posix_spawn: handle perm issues

Shopify · Jan 24, 2024 · fe34e95 · fe34e95
1 parent 7d8a2d1
commit fe34e95
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/process.c b/process.c
@@ -4756,6 +4756,11 @@ rb_posix_spawn(struct rb_execarg *eargp)
     posix_spawn_file_actions_destroy(&file_actions);
 
     if (err) {
+        // posix_spawn only returns fork/vfork/clone failures.
+        // If it failed but errno == 0, then it must be an "exec" failure.
+        if (errno == 0) {
+            eaccess(abspath, X_OK);
+        }
         rb_sys_fail(abspath);
     }