From: Lennart Poettering <lennart@poettering.net>
Date: Wed, 7 Feb 2018 02:10:09 +0000 (+0100)
Subject: process-util: use raw_getpid() in getpid_cache() internally (#8115)
X-Git-Tag: v238~135
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=996def17f99bb3f41f82032860dfcb98ff19c3ae;p=thirdparty%2Fsystemd.git

process-util: use raw_getpid() in getpid_cache() internally (#8115)

We have the raw_getpid() definition in place anyway, and it's certainly
beneficial to expose the same semantics on pre glibc 2.24 and after it
too, hence always bypass glibc for this, and always cache things on our
side.

Fixes: #8113
---

diff --git a/src/basic/process-util.c b/src/basic/process-util.c
index dc7c9ef9ef6..e04bcc97827 100644
--- a/src/basic/process-util.c
+++ b/src/basic/process-util.c
@@ -1137,7 +1137,7 @@ pid_t getpid_cached(void) {
         case CACHED_PID_UNSET: { /* Not initialized yet, then do so now */
                 pid_t new_pid;
 
-                new_pid = getpid();
+                new_pid = raw_getpid();
 
                 if (__register_atfork(NULL, NULL, reset_cached_pid, __dso_handle) != 0) {
                         /* OOM? Let's try again later */
@@ -1150,7 +1150,7 @@ pid_t getpid_cached(void) {
         }
 
         case CACHED_PID_BUSY: /* Somebody else is currently initializing */
-                return getpid();
+                return raw_getpid();
 
         default: /* Properly initialized */
                 return current_value;