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From edd98123a8aa41c799331d6ab844d026ecff2c46 Mon Sep 17 00:00:00 2001
From:
Date: Thu, 11 Mar 2021 07:43:23 -0600
Subject: [PATCH 4/6] Fix pthread support for non glibc users
---
shared/systemd/src/basic/process-util.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/shared/systemd/src/basic/process-util.c b/shared/systemd/src/basic/process-util.c
index 03ca04e..1e97688 100644
--- a/shared/systemd/src/basic/process-util.c
+++ b/shared/systemd/src/basic/process-util.c
@@ -17,6 +17,9 @@
#include <sys/wait.h>
#include <syslog.h>
#include <unistd.h>
+#ifndef __GLIBC__
+#include <pthread.h>
+#endif
#if 0 /* NM_IGNORED */
#if HAVE_VALGRIND_VALGRIND_H
#include <valgrind/valgrind.h>
@@ -1152,11 +1155,13 @@ void reset_cached_pid(void) {
cached_pid = CACHED_PID_UNSET;
}
+#ifdef __GLIBC__
/* We use glibc __register_atfork() + __dso_handle directly here, as they are not included in the glibc
* headers. __register_atfork() is mostly equivalent to pthread_atfork(), but doesn't require us to link against
* libpthread, as it is part of glibc anyway. */
extern int __register_atfork(void (*prepare) (void), void (*parent) (void), void (*child) (void), void *dso_handle);
extern void* __dso_handle _weak_;
+#endif
pid_t getpid_cached(void) {
static bool installed = false;
@@ -1185,7 +1190,12 @@ pid_t getpid_cached(void) {
* only half-documented (glibc doesn't document it but LSB does — though only superficially)
* we'll check for errors only in the most generic fashion possible. */
- if (__register_atfork(NULL, NULL, reset_cached_pid, __dso_handle) != 0) {
+ #ifdef __GLIBC__
+ if (__register_atfork(NULL, NULL, reset_cached_pid, __dso_handle) != 0) {
+ #else
+ if (pthread_atfork(NULL, NULL, reset_cached_pid) != 0) {
+ #endif
+
/* OOM? Let's try again later */
cached_pid = CACHED_PID_UNSET;
return new_pid;
--
2.26.2
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