From 9597122867c22e949ef3b69c779e0facebce6eb5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andreas=20M=C3=BCller?= <schnitzeltony@gmail.com>
Date: Tue, 2 Apr 2019 01:34:35 +0200
Subject: [PATCH] Fix build with musl - systemd specific
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From: =?UTF-8?q?Andreas=20M=C3=BCller?= <schnitzeltony@gmail.com>
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Networkmanager imported some code from systemd. This requires some adjustments
for musl.

Upstream-Status: Pending

Signed-off-by: Andreas Müller <schnitzeltony@gmail.com>

---
 shared/systemd/src/basic/in-addr-util.c |  1 +
 shared/systemd/src/basic/process-util.c |  9 +++++++++
 shared/systemd/src/basic/socket-util.h  |  6 ++++++
 shared/systemd/src/basic/sort-util.h    | 27 ++++---------------------
 shared/systemd/src/basic/stdio-util.h   |  2 ++
 shared/systemd/src/basic/string-util.h  |  5 +++++
 6 files changed, 27 insertions(+), 23 deletions(-)

diff --git a/shared/systemd/src/basic/in-addr-util.c b/shared/systemd/src/basic/in-addr-util.c
index 1ea3e7f..1204393 100644
--- a/shared/systemd/src/basic/in-addr-util.c
+++ b/shared/systemd/src/basic/in-addr-util.c
@@ -15,6 +15,7 @@
 #include "in-addr-util.h"
 #include "macro.h"
 #include "parse-util.h"
+#include "string-util.h"
 #include "random-util.h"
 #include "string-util.h"
 #include "strxcpyx.h"
diff --git a/shared/systemd/src/basic/process-util.c b/shared/systemd/src/basic/process-util.c
index 03ca04e..be8bca8 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 +1190,11 @@ 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. */
 
+#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;
diff --git a/shared/systemd/src/basic/socket-util.h b/shared/systemd/src/basic/socket-util.h
index 1ece911..290e94c 100644
--- a/shared/systemd/src/basic/socket-util.h
+++ b/shared/systemd/src/basic/socket-util.h
@@ -14,6 +14,12 @@
 #include <sys/types.h>
 #include <sys/un.h>
 
+#if !defined(__GLIBC__)
+/* SIOCGSTAMPNS from linux/asm-generic.h
+ * for src/systemd/src/libsystemd-network/sd-lldp.c */
+#include <linux/sockios.h>
+#endif
+
 #include "macro.h"
 #include "missing_socket.h"
 #include "sparse-endian.h"
diff --git a/shared/systemd/src/basic/sort-util.h b/shared/systemd/src/basic/sort-util.h
index a8dc3bb..ff0aa88 100644
--- a/shared/systemd/src/basic/sort-util.h
+++ b/shared/systemd/src/basic/sort-util.h
@@ -5,15 +5,10 @@
 
 #include "macro.h"
 
-void *xbsearch_r(const void *key, const void *base, size_t nmemb, size_t size,
-                 __compar_d_fn_t compar, void *arg);
-
-#define typesafe_bsearch_r(k, b, n, func, userdata)                     \
-        ({                                                              \
-                const typeof(b[0]) *_k = k;                             \
-                int (*_func_)(const typeof(b[0])*, const typeof(b[0])*, typeof(userdata)) = func; \
-                xbsearch_r((const void*) _k, (b), (n), sizeof((b)[0]), (__compar_d_fn_t) _func_, userdata); \
-        })
+#if !defined(__GLIBC__)
+typedef int (*__compar_fn_t) (const void*, const void*);
+typedef __compar_fn_t comparison_fn_t;
+#endif
 
 /**
  * Normal bsearch requires base to be nonnull. Here were require
@@ -54,17 +49,3 @@ static inline void _qsort_safe(void *base, size_t nmemb, size_t size, __compar_f
                 int (*_func_)(const typeof(p[0])*, const typeof(p[0])*) = func; \
                 _qsort_safe((p), (n), sizeof((p)[0]), (__compar_fn_t) _func_); \
         })
-
-static inline void qsort_r_safe(void *base, size_t nmemb, size_t size, __compar_d_fn_t compar, void *userdata) {
-        if (nmemb <= 1)
-                return;
-
-        assert(base);
-        qsort_r(base, nmemb, size, compar, userdata);
-}
-
-#define typesafe_qsort_r(p, n, func, userdata)                          \
-        ({                                                              \
-                int (*_func_)(const typeof(p[0])*, const typeof(p[0])*, typeof(userdata)) = func; \
-                qsort_r_safe((p), (n), sizeof((p)[0]), (__compar_d_fn_t) _func_, userdata); \
-        })
diff --git a/shared/systemd/src/basic/stdio-util.h b/shared/systemd/src/basic/stdio-util.h
index c3b9448..e80a938 100644
--- a/shared/systemd/src/basic/stdio-util.h
+++ b/shared/systemd/src/basic/stdio-util.h
@@ -1,7 +1,9 @@
 /* SPDX-License-Identifier: LGPL-2.1+ */
 #pragma once
 
+#if defined(__GLIBC__)
 #include <printf.h>
+#endif
 #include <stdarg.h>
 #include <stdio.h>
 #include <sys/types.h>
diff --git a/shared/systemd/src/basic/string-util.h b/shared/systemd/src/basic/string-util.h
index cefbda3..71e4dec 100644
--- a/shared/systemd/src/basic/string-util.h
+++ b/shared/systemd/src/basic/string-util.h
@@ -26,6 +26,11 @@
 #define strcaseeq(a,b) (strcasecmp((a),(b)) == 0)
 #define strncaseeq(a, b, n) (strncasecmp((a), (b), (n)) == 0)
 
+/* musl does not know strndupa */
+#if !defined(__GLIBC__)
+#define strndupa(x,s) strncpy(alloca(strlen(x)+1),x,s)
+#endif
+
 int strcmp_ptr(const char *a, const char *b) _pure_;
 int strcasecmp_ptr(const char *a, const char *b) _pure_;