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From 75720bff62a84896e9a0654afc7cf9408cf89a38 Mon Sep 17 00:00:00 2001
From: Filipe Brandenburger <filbranden@google.com>
Date: Sun, 15 Jul 2018 22:43:35 -0700
Subject: [PATCH] build-sys: Detect whether struct statx is defined in
sys/stat.h
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Starting with glibc 2.27.9000-36.fc29, include file sys/stat.h will have a
definition for struct statx, in which case include file linux/stat.h should be
avoided, in order to prevent a duplicate definition.
In file included from ../src/basic/missing.h:18,
from ../src/basic/util.h:28,
from ../src/basic/hashmap.h:10,
from ../src/shared/bus-util.h:12,
from ../src/libsystemd/sd-bus/bus-creds.c:11:
/usr/include/linux/stat.h:99:8: error: redefinition of ‘struct statx’
struct statx {
^~~~~
In file included from /usr/include/sys/stat.h:446,
from ../src/basic/util.h:19,
from ../src/basic/hashmap.h:10,
from ../src/shared/bus-util.h:12,
from ../src/libsystemd/sd-bus/bus-creds.c:11:
/usr/include/bits/statx.h:36:8: note: originally defined here
struct statx
^~~~~
Extend our meson.build to look for struct statx when only sys/stat.h is
included and, in that case, do not include linux/stat.h anymore.
Tested that systemd builds correctly when using a glibc version that includes a
definition for struct statx.
glibc Fedora RPM update:
https://src.fedoraproject.org/rpms/glibc/c/28cb5d31fc1e5887912283c889689c47076278ae
glibc upstream commit:
https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=fd70af45528d59a00eb3190ef6706cb299488fcd
---
Upstream-Status: Pending
Signed-off-by: Khem Raj <raj.khem@gmail.com>
meson.build | 5 +++++
src/basic/missing.h | 5 ++++-
src/basic/xattr-util.c | 1 -
3 files changed, 9 insertions(+), 2 deletions(-)
Index: git/meson.build
===================================================================
--- git.orig/meson.build
+++ git/meson.build
@@ -432,6 +432,7 @@ decl_headers = '''
#include <sys/stat.h>
'''
# FIXME: key_serial_t is only defined in keyutils.h, this is bound to fail
+# FIXME: these should use -D_GNU_SOURCE, since that is defined at build time
foreach decl : ['char16_t',
'char32_t',
@@ -446,6 +447,10 @@ foreach decl : ['char16_t',
conf.set10('HAVE_' + decl.underscorify().to_upper(), have)
endforeach
+conf.set10('HAVE_STRUCT_STATX_IN_SYS_STAT_H', cc.sizeof('struct statx', prefix : '''
+#include <sys/stat.h>
+''', args : '-D_GNU_SOURCE') > 0)
+
foreach decl : [['IFLA_INET6_ADDR_GEN_MODE', 'linux/if_link.h'],
['IN6_ADDR_GEN_MODE_STABLE_PRIVACY', 'linux/if_link.h'],
['IFLA_VRF_TABLE', 'linux/if_link.h'],
Index: git/src/basic/missing.h
===================================================================
--- git.orig/src/basic/missing.h
+++ git/src/basic/missing.h
@@ -15,7 +15,6 @@
#include <linux/neighbour.h>
#include <linux/oom.h>
#include <linux/rtnetlink.h>
-#include <linux/stat.h>
#include <net/ethernet.h>
#include <stdlib.h>
#include <sys/resource.h>
@@ -25,6 +24,10 @@
#include <uchar.h>
#include <unistd.h>
+#if !HAVE_STRUCT_STATX_IN_SYS_STAT_H
+#include <linux/stat.h>
+#endif
+
#if HAVE_AUDIT
#include <libaudit.h>
#endif
Index: git/src/basic/xattr-util.c
===================================================================
--- git.orig/src/basic/xattr-util.c
+++ git/src/basic/xattr-util.c
@@ -2,7 +2,6 @@
#include <errno.h>
#include <fcntl.h>
-#include <linux/stat.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
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