From dbe9daeb763bffdf2ba4a5fa7c2a3ac8587c0d37 Mon Sep 17 00:00:00 2001

From: =?UTF-8?q?Jonas=20=C3=85dahl?= <jadahl@gmail.com>

Date: Fri, 27 Sep 2019 10:15:48 +0200

Subject: [PATCH] main: Make process PR_SET_DUMPABLE

Otherwise we won't get core dumps if the launching binary has

capabilities set.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/811

---

 config.h.meson  | 3 +++

 meson.build     | 4 ++++

 src/core/main.c | 8 ++++++++

 3 files changed, 15 insertions(+)

diff --git a/config.h.meson b/config.h.meson

index 77045319c..0bab71848 100644

--- a/config.h.meson

+++ b/config.h.meson

@@ -61,6 +61,9 @@

 /* XKB base prefix */

 #mesondefine XKB_BASE

+/* Whether <sys/prctl.h> exists and it defines prctl() */

+#mesondefine HAVE_SYS_PRCTL

+

 /* Either <sys/random.h> or <linux/random.h> */

 #mesondefine HAVE_SYS_RANDOM

 #mesondefine HAVE_LINUX_RANDOM

diff --git a/meson.build b/meson.build

index ae0bbfcc2..55ab3eb14 100644

--- a/meson.build

+++ b/meson.build

@@ -366,6 +366,10 @@ cdata.set('HAVE_PROFILER', have_profiler)

 xkb_base = xkeyboard_config_dep.get_pkgconfig_variable('xkb_base')

 cdata.set_quoted('XKB_BASE', xkb_base)

+if cc.has_header_symbol('sys/prctl.h', 'prctl')

+  cdata.set('HAVE_SYS_PRCTL', 1)

+endif

+

 if have_wayland

   xwayland_path = get_option('xwayland_path')

   if xwayland_path == ''

diff --git a/src/core/main.c b/src/core/main.c

index 2724cf076..7f4f666d2 100644

--- a/src/core/main.c

+++ b/src/core/main.c

@@ -70,6 +70,10 @@

 #include <systemd/sd-login.h>

 #endif /* HAVE_WAYLAND && HAVE_NATIVE_BACKEND */

+#ifdef HAVE_SYS_PRCTL

+#include <sys/prctl.h>

+#endif

+

 #include "backends/meta-backend-private.h"

 #include "backends/x11/cm/meta-backend-x11-cm.h"

 #include "backends/x11/meta-backend-x11.h"

@@ -532,6 +536,10 @@ meta_init (void)

   MetaCompositorType compositor_type;

   GType backend_gtype;

+#ifdef HAVE_SYS_PRCTL

+  prctl (PR_SET_DUMPABLE, 1);

+#endif

+

   sigemptyset (&empty_mask);

   act.sa_handler = SIG_IGN;

   act.sa_mask    = empty_mask;

-- 

2.22.0