Commit ddb2ffdc authored Mar 21, 2024 by Arnaldo Carvalho de Melo Committed by Andrii Nakryiko Mar 21, 2024

libbpf: Define MFD_CLOEXEC if not available



Since its going directly to the syscall to avoid not having
memfd_create() available in some systems, do the same for its
MFD_CLOEXEC flags, defining it if not available.

This fixes the build in those systems, noticed while building perf on a
set of build containers.

Fixes: 9fa5e1a1 ("libbpf: Call memfd_create() syscall directly")
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/ZfxZ9nCyKvwmpKkE@x1

parent a51cd6bf

tools/lib/bpf/libbpf.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -1650,6 +1650,10 @@ static int sys_memfd_create(const char *name, unsigned flags)
		return syscall(__NR_memfd_create, name, flags);
		}

		#ifndef MFD_CLOEXEC
		#define MFD_CLOEXEC 0x0001U
		#endif

		static int create_placeholder_fd(void)
		{
		int fd;