From 03fd19fc87573276e0d359260c8fe591f5f0216a Mon Sep 17 00:00:00 2001
From: Chen Qi <Qi.Chen@windriver.com>
Date: Fri, 29 Jun 2018 16:34:50 +0800
Subject: [PATCH 06/19] src/basic/missing.h: check for missing strndupa

include missing.h  for definition of strndupa

Upstream-Status: Inappropriate [musl specific]

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
---
 meson.build             |  1 +
 src/basic/missing.h     | 11 +++++++++++
 src/basic/mkdir.c       |  1 +
 src/basic/pager.c       |  1 +
 src/basic/parse-util.c  |  1 +
 src/basic/procfs-util.c |  1 +
 src/shared/uid-range.c  |  1 +
 7 files changed, 17 insertions(+)

diff --git a/meson.build b/meson.build
index 8c16bc979..a734a295c 100644
--- a/meson.build
+++ b/meson.build
@@ -503,6 +503,7 @@ foreach ident : [
                                  #include <unistd.h>'''],
         ['explicit_bzero' ,   '''#include <string.h>'''],
         ['reallocarray',      '''#include <malloc.h>'''],
+        ['strndupa' ,         '''#include <string.h>'''],
 ]
 
         have = cc.has_function(ident[0], prefix : ident[1], args : '-D_GNU_SOURCE')
diff --git a/src/basic/missing.h b/src/basic/missing.h
index 0e33abb9f..02397f1b6 100644
--- a/src/basic/missing.h
+++ b/src/basic/missing.h
@@ -1184,6 +1184,17 @@ struct input_mask {
 typedef int32_t key_serial_t;
 #endif
 
+#if ! HAVE_STRNDUPA
+#define strndupa(s, n) \
+  ({ \
+    const char *__old = (s); \
+    size_t __len = strnlen(__old, (n)); \
+    char *__new = (char *)alloca(__len + 1); \
+    __new[__len] = '\0'; \
+    (char *)memcpy(__new, __old, __len); \
+  })
+#endif
+
 #ifndef KEYCTL_JOIN_SESSION_KEYRING
 #define KEYCTL_JOIN_SESSION_KEYRING 1
 #endif
diff --git a/src/basic/mkdir.c b/src/basic/mkdir.c
index 6ab1b4422..77c3e0863 100644
--- a/src/basic/mkdir.c
+++ b/src/basic/mkdir.c
@@ -13,6 +13,7 @@
 #include "stat-util.h"
 #include "stdio-util.h"
 #include "user-util.h"
+#include "missing.h"
 
 int mkdir_safe_internal(const char *path, mode_t mode, uid_t uid, gid_t gid, MkdirFlags flags, mkdir_func_t _mkdir) {
         struct stat st;
diff --git a/src/basic/pager.c b/src/basic/pager.c
index f24126111..8223bff02 100644
--- a/src/basic/pager.c
+++ b/src/basic/pager.c
@@ -21,6 +21,7 @@
 #include "string-util.h"
 #include "strv.h"
 #include "terminal-util.h"
+#include "missing.h"
 
 static pid_t pager_pid = 0;
 
diff --git a/src/basic/parse-util.c b/src/basic/parse-util.c
index 6becf8587..52576f536 100644
--- a/src/basic/parse-util.c
+++ b/src/basic/parse-util.c
@@ -17,6 +17,7 @@
 #include "parse-util.h"
 #include "process-util.h"
 #include "string-util.h"
+#include "missing.h"
 
 int parse_boolean(const char *v) {
         assert(v);
diff --git a/src/basic/procfs-util.c b/src/basic/procfs-util.c
index a159e344b..ebc427d6b 100644
--- a/src/basic/procfs-util.c
+++ b/src/basic/procfs-util.c
@@ -11,6 +11,7 @@
 #include "procfs-util.h"
 #include "stdio-util.h"
 #include "string-util.h"
+#include "missing.h"
 
 int procfs_tasks_get_limit(uint64_t *ret) {
         _cleanup_free_ char *value = NULL;
diff --git a/src/shared/uid-range.c b/src/shared/uid-range.c
index 434ce6ff4..37093ab7b 100644
--- a/src/shared/uid-range.c
+++ b/src/shared/uid-range.c
@@ -8,6 +8,7 @@
 #include "macro.h"
 #include "uid-range.h"
 #include "user-util.h"
+#include "missing.h"
 
 static bool uid_range_intersect(UidRange *range, uid_t start, uid_t nr) {
         assert(range);
-- 
2.11.0