Attachment #519088 for bug #646566

View | Details | Raw Unified | Return to bug 646566
Collapse All | Expand All

Lines 607-612 AS_IF([test "x$enable_memfd" = "xyes" && test "x$HAVE_MEMFD" = "x0"], Link Here

(-)a/configure.ac (+3 lines)
607	[AC_MSG_ERROR([*** Your Linux kernel does not support memfd shared memory.	607	[AC_MSG_ERROR([*** Your Linux kernel does not support memfd shared memory.
608	*** Use linux v3.17 or higher for such a feature.])])	608	*** Use linux v3.17 or higher for such a feature.])])
609		609
		610	AS_IF([test "x$HAVE_MEMFD" = "x1"],
		611	AC_CHECK_FUNCS([memfd_create]))
		612
610	AC_SUBST(HAVE_MEMFD)	613	AC_SUBST(HAVE_MEMFD)
611	AM_CONDITIONAL([HAVE_MEMFD], [test "x$HAVE_MEMFD" = x1])	614	AM_CONDITIONAL([HAVE_MEMFD], [test "x$HAVE_MEMFD" = x1])
612	AS_IF([test "x$HAVE_MEMFD" = "x1"], AC_DEFINE([HAVE_MEMFD], 1, [Have memfd shared memory.]))	615	AS_IF([test "x$HAVE_MEMFD" = "x1"], AC_DEFINE([HAVE_MEMFD], 1, [Have memfd shared memory.]))




  License along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
***/

#if defined(HAVE_MEMFD) && !defined(HAVE_MEMFD_CREATE)

#include <sys/syscall.h>
#include <fcntl.h>

/*
 * Before glibc version 2.27 there was no wrapper for memfd_create(2),
 * so we have to provide our own.
 *
 * Also define memfd fcntl sealing macros. While they are already
 * defined in the kernel header file <linux/fcntl.h>, that file as

#define F_SEAL_WRITE    0x0008  /* prevent writes */
#endif

#endif /* HAVE_MEMFD && !HAVE_MEMFD_CREATE */

#endif
- 

Return to bug 646566

Lines 20-32 Link Here

(-)a/src/pulsecore/memfd-wrappers.h (-4 / +4 lines)
20	License along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.	20	License along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
21	***/	21	***/
22		22
23	#ifdef HAVE_MEMFD	23	#if defined(HAVE_MEMFD) && !defined(HAVE_MEMFD_CREATE)
24		24
25	#include <sys/syscall.h>	25	#include <sys/syscall.h>
26	#include <fcntl.h>	26	#include <fcntl.h>
27		27
28	/*	28	/*
29	* No glibc wrappers exist for memfd_create(2), so provide our own.	29	* Before glibc version 2.27 there was no wrapper for memfd_create(2),
		30	* so we have to provide our own.
30	*	31	*
31	* Also define memfd fcntl sealing macros. While they are already	32	* Also define memfd fcntl sealing macros. While they are already
32	* defined in the kernel header file <linux/fcntl.h>, that file as	33	* defined in the kernel header file <linux/fcntl.h>, that file as
Lines 63-68 static inline int memfd_create(const char *name, unsigned int flags) { Link Here
63	#define F_SEAL_WRITE 0x0008 /* prevent writes */	64	#define F_SEAL_WRITE 0x0008 /* prevent writes */
64	#endif	65	#endif
65		66
66	#endif /* HAVE_MEMFD */	67	#endif /* HAVE_MEMFD && !HAVE_MEMFD_CREATE */
67		68
68	#endif	69	#endif
69	-