• Emmanuel Gil Peyrot's avatar
    shared: Use memfd_create() when available · deae98ef
    Emmanuel Gil Peyrot authored
    This (so-far) Linux-only API lets users create file descriptors purely
    in memory, without any backing file on the filesystem and the race
    condition which could ensue when unlink()ing it.
    
    It also allows seals to be placed on the file, ensuring to every other
    process that we won’t be allowed to shrink the contents, potentially
    causing a SIGBUS when they try reading it.
    
    This patch is best viewed with the -w option of git log -p.
    
    It is an almost exact copy of Wayland commit
    6908c8c85a2e33e5654f64a55cd4f847bf385cae, see
    wayland/wayland!4Signed-off-by: default avatarEmmanuel Gil Peyrot <linkmauve@linkmauve.fr>
    deae98ef