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commit 421cf15486eea1b52f10e2b0be305018fee8c285
Author: Rudi Heitbaum <rudi@heitbaum.com>
Date: Sun Aug 13 09:37:32 2023 +0000
shm: allow for older versions of Linux without MFD_NOEXEC_SEAL
Part-of: <https://gitlab.freedesktop.org/pulseaudio/pulseaudio/-/merge_requests/794>
diff --git a/src/pulsecore/shm.c b/src/pulsecore/shm.c
index 4247b0921..694f971b4 100644
--- a/src/pulsecore/shm.c
+++ b/src/pulsecore/shm.c
@@ -164,7 +164,11 @@ static int sharedmem_create(pa_shm *m, pa_mem_type_t type, size_t size, mode_t m
#endif
#ifdef HAVE_MEMFD
case PA_MEM_TYPE_SHARED_MEMFD:
+ /* For linux >= 6.3 create fd with MFD_NOEXEC_SEAL flag */
fd = memfd_create("pulseaudio", MFD_ALLOW_SEALING|MFD_CLOEXEC|MFD_NOEXEC_SEAL);
+ /* Retry creating fd without MFD_NOEXEC_SEAL to support linux < 6.3 */
+ if (fd < 0)
+ fd = memfd_create("pulseaudio", MFD_ALLOW_SEALING|MFD_CLOEXEC);
break;
#endif
default:
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