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

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