path-util: make find_executable() work without /proc mounted

Follow-up for 888f65ace6296ed61285d31db846babf1c11885e.

Hopefully fixes #20514.

diff --git a/src/basic/path-util.c b/src/basic/path-util.c
index d11f254a9f6af8927844d418dcdd28a8d6d4bc03..a21981616b5966abe5f441deb21bf0652eb8bf76 100644 (file)
--- a/src/basic/path-util.c
+++ b/src/basic/path-util.c
@@ -630,7 +630,11 @@ static int check_x_access(const char *path, int *ret_fd) {
                 return r;
 
         r = access_fd(fd, X_OK);
-        if (r < 0)
+        if (r == -ENOSYS) {
+                /* /proc is not mounted. Fallback to access(). */
+                if (access(path, X_OK) < 0)
+                        return -errno;
+        } else if (r < 0)
                 return r;
 
         if (ret_fd)