From: Kyle Evans <kev...@freebsd.org> shm_open2 allows a little more flexibility than the original shm_open. shm_open2 doesn't enforce CLOEXEC on its callers, and it has a separate shmflag argument that can be expanded later. Currently the only shmflag is to allow file sealing on the returned fd.
shm_open and memfd_create will both be implemented in libc to use this new syscall. __FreeBSD_version is bumped to indicate the presence. Reviewed by: kib, markj Differential Revision: https://reviews.freebsd.org/D21393 --- newlib/libc/sys/rtems/include/sys/mman.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/newlib/libc/sys/rtems/include/sys/mman.h b/newlib/libc/sys/rtems/include/sys/mman.h index f75490c96..6e178d83d 100644 --- a/newlib/libc/sys/rtems/include/sys/mman.h +++ b/newlib/libc/sys/rtems/include/sys/mman.h @@ -176,6 +176,12 @@ * Anonymous object constant for shm_open(). */ #define SHM_ANON ((char *)1) + +/* + * shmflags for shm_open2() + */ +#define SHM_ALLOW_SEALING 0x00000001 + #endif /* __BSD_VISIBLE */ /* -- 2.35.3 _______________________________________________ devel mailing list devel@rtems.org http://lists.rtems.org/mailman/listinfo/devel
