From 55534fb5e4742b0db9ae5e1e0202c53804147697 Mon Sep 17 00:00:00 2001
From: Daniel Mack <daniel@zonque.org>
Date: Tue, 7 Oct 2014 12:36:09 +0200
Subject: [PATCH] bus-proxyd: check return values of getpeercred() and
 getpeersec()

If we can't get the remote peer or security creds, bail out.

Spotted by coverity.
---
 src/bus-proxyd/bus-proxyd.c | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/src/bus-proxyd/bus-proxyd.c b/src/bus-proxyd/bus-proxyd.c
index cbec04933c..ce571fa753 100644
--- a/src/bus-proxyd/bus-proxyd.c
+++ b/src/bus-proxyd/bus-proxyd.c
@@ -1146,8 +1146,17 @@ int main(int argc, char *argv[]) {
                 sd_is_socket(out_fd, AF_UNIX, 0, 0) > 0;
 
         if (is_unix) {
-                getpeercred(in_fd, &ucred);
-                getpeersec(in_fd, &peersec);
+                r = getpeercred(in_fd, &ucred);
+                if (r < 0) {
+                        log_error("Failed to get peer creds: %s", strerror(-r));
+                        goto finish;
+                }
+
+                r = getpeersec(in_fd, &peersec);
+                if (r < 0) {
+                        log_error("Failed to get security creds: %s", strerror(-r));
+                        goto finish;
+                }
         }
 
         if (arg_drop_privileges) {