shm: Check `fcntl` return value (!359) · Merge requests · xorg / xserver · GitLab

Due to an influx of spam, we have had to impose restrictions on new accounts. Please see this wiki page for instructions on how to get full permissions. Sorry for the inconvenience.

Olivier Fourdan requested to merge ofourdan/xserver:xshm-fcntl into master Dec 11, 2019

Adding seals to the memfd_create()'ed file descriptor could potentially fail.

Make sure to test the return value of the call to fcntl to place the seal.

Fixes: f6753c11 - shm: Use memfd_create when possible Signed-off-by: Olivier Fourdan ofourdan@redhat.com