[PATCH] cursor: use memfd_create or shm_open for anonymous in-memory files

Jan Engelhardt jengelh at inai.de
Thu Aug 16 10:57:47 UTC 2018

On Thursday 2018-08-16 12:41, Emil Velikov wrote:
>On 15 August 2018 at 15:14, Simon Ser <contact at emersion.fr> wrote:
>> On Linux, try using memfd_create and file sealing. Fallback to
>> shm_open on old kernels.
>> On FreeBSD, use shm_open with SHM_ANON.
>> Otherwise, use shm_open with a random name, making sure the name
>> isn't already taken.
>Thinking out loud:
>I wonder if the next POSIX standard will finally standardise
>random/anonymous shm files. Be that shm_open+SHM_ANON [...]

According to the shm_open.3 from Linux man-pages-4.16 project,
shm_open is already marked standardized:

       POSIX.1-2001, POSIX.1-2008.

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