From 5e6a495495972f748e69d6ec1a8ba2b78aaa7f5a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= <zbyszek@in.waw.pl>
Date: Sun, 24 May 2015 20:20:06 -0400
Subject: [PATCH] bus-creds: always set SD_BUS_CREDS_PID when we set pid in the
 mask

Also reorder the code a bit to be easier to parse.

(cherry picked from commit 236f83afa935d6e07fcd5c17b5db7b1cf424267a)
---
 src/core/selinux-access.c         |  2 +-
 src/libsystemd/sd-bus/bus-creds.c | 13 ++++++-------
 2 files changed, 7 insertions(+), 8 deletions(-)

diff --git a/src/core/selinux-access.c b/src/core/selinux-access.c
index 5e9a4a5e02..decd42f95a 100644
--- a/src/core/selinux-access.c
+++ b/src/core/selinux-access.c
@@ -261,7 +261,7 @@ int mac_selinux_generic_access_check(
         audit_info.path = path;
         audit_info.cmdline = cl;
 
-        r = selinux_check_access((security_context_t) scon, fcon, tclass, permission, &audit_info);
+        r = selinux_check_access(scon, fcon, tclass, permission, &audit_info);
         if (r < 0)
                 r = sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED, "SELinux policy denies access.");
 
diff --git a/src/libsystemd/sd-bus/bus-creds.c b/src/libsystemd/sd-bus/bus-creds.c
index 4d67619cf8..1c365b7fcd 100644
--- a/src/libsystemd/sd-bus/bus-creds.c
+++ b/src/libsystemd/sd-bus/bus-creds.c
@@ -773,11 +773,13 @@ int bus_creds_add_more(sd_bus_creds *c, uint64_t mask, pid_t pid, pid_t tid) {
                 return 0;
 
         /* Try to retrieve PID from creds if it wasn't passed to us */
-        if (pid <= 0 && (c->mask & SD_BUS_CREDS_PID))
+        if (pid > 0) {
+                c->pid = pid;
+                c->mask |= SD_BUS_CREDS_PID;
+        } else if (c->mask & SD_BUS_CREDS_PID)
                 pid = c->pid;
-
-        /* Without pid we cannot do much... */
-        if (pid <= 0)
+        else
+                /* Without pid we cannot do much... */
                 return 0;
 
         /* Try to retrieve TID from creds if it wasn't passed to us */
@@ -789,9 +791,6 @@ int bus_creds_add_more(sd_bus_creds *c, uint64_t mask, pid_t pid, pid_t tid) {
         if (missing == 0)
                 return 0;
 
-        c->pid = pid;
-        c->mask |= SD_BUS_CREDS_PID;
-
         if (tid > 0) {
                 c->tid = tid;
                 c->mask |= SD_BUS_CREDS_TID;