daemon: ensure that base-path is an existing directory

Any request to the daemon would fail if base-path (if specified) is not
a directory. We now check for this condition early.

Signed-off-by: Johannes Sixt <johannes.sixt@telecom.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/daemon.c b/daemon.c
index dd0177f48d3192d3006394584e335ae1beba5db4..2b4a6f145cc0f37c95da31df23dfde3ba7fa63a7 100644 (file)
--- a/daemon.c
+++ b/daemon.c
@@ -1184,6 +1184,14 @@ int main(int argc, char **argv)
        if (strict_paths && (!ok_paths || !*ok_paths))
                die("option --strict-paths requires a whitelist");
 
+       if (base_path) {
+               struct stat st;
+
+               if (stat(base_path, &st) || !S_ISDIR(st.st_mode))
+                       die("base-path '%s' does not exist or "
+                           "is not a directory", base_path);
+       }
+
        if (inetd_mode) {
                struct sockaddr_storage ss;
                struct sockaddr *peer = (struct sockaddr *)&ss;