add_c_file: Improve tor source directory checks

Check that the script isn't in a tor build directory, by looking
for a src/include.am file.

Part of 32962.

1 files changed, 2 insertions, 0 deletions

diff --git a/scripts/maint/add_c_file.py b/scripts/maint/add_c_file.py
index 25a1be5331..a7478cbecf 100755
--- a/scripts/maint/add_c_file.py
+++ b/scripts/maint/add_c_file.py
@@ -265,6 +265,8 @@ def run(fname):
     # Make sure we're in the top-level tor directory,
     # which contains the src directory
     assert(os.path.isdir("src"))
+    # And it looks like a tor/src directory
+    assert(os.path.isfile("src/include.am"))
 
     # Make the file name relative to the top-level tor directory
     tor_fname = tordir_file(fname)