Add signalfd function definition

From: Dietmar Maurer <dietmar@proxmox.com> The signalfd function prototype and the signalfd header file is not defined in the debian Lenny. We want to use this debian version with a newer kernel. This patch gives the signalfd function prototype, because the function is available in the glibc-2.7 which is the version coming with debian Lenny. Signed-off-by: Dietmar Maurer <dietmar@proxmox.com> Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>

Add signalfd function definition
ff218c25 · dlezcano · dc21287c · ff218c25 · ff218c25
Commit ff218c25 authored Feb 02, 2009 by dlezcano
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configure.in configure.in +2 -0

start.c src/lxc/start.c +6 -1

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--- a/configure.in
+++ b/configure.in
@@ -27,6 +27,8 @@ AC_CHECK_HEADERS([linux/netlink.h linux/genetlink.h], [], AC_MSG_ERROR([netlink 
 AC_CHECK_HEADERS([sys/capability.h], [], AC_MSG_ERROR([please install libcap-devel.]),
 [#include <sys/capability.h>])

+AC_CHECK_HEADERS([sys/signalfd.h])
+
 AC_PROG_GCC_TRADITIONAL

 if test "x$GCC" = "xyes"; then

--- a/src/lxc/start.c
+++ b/src/lxc/start.c
@@ -21,7 +21,7 @@
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

-#define _GNU_SOURCE
+#include "../config.h"
 #include <stdio.h>
 #undef _GNU_SOURCE
 #include <string.h>
@@ -41,7 +41,12 @@
 #include <sys/wait.h>
 #include <sys/un.h>
 #include <sys/poll.h>
+
+#ifdef HAVE_SYS_SIGNALFD_H 
 #include <sys/signalfd.h>
+#else
+extern int signalfd (int fd, const sigset_t *mask, int flags);
+#endif

 #include "error.h"
 #include "af_unix.h"