exec: Assert that at_fd is the immediate parent

1 files changed, 3 insertions, 0 deletions

diff --git a/exec.c b/exec.c
index 3a35063..ddca2f9 100644
--- a/exec.c
+++ b/exec.c
@@ -266,6 +266,9 @@ static int bfs_exec_openwd(struct bfs_exec *execbuf, const struct BFTW *ftwbuf)
 	assert(!execbuf->wd_path);
 
 	if (ftwbuf->at_fd != AT_FDCWD) {
+		// Rely on at_fd being the immediate parent
+		assert(ftwbuf->at_path == xbasename(ftwbuf->at_path));
+
 		execbuf->wd_fd = ftwbuf->at_fd;
 		if (!(execbuf->flags & BFS_EXEC_MULTI)) {
 			return 0;