tree 85668ff6f895d530c307c8e5eff7eaa92c2582c3
parent 31ff018ed5a98f216e25ea5382b7cc8d9c6ecadb
author Emilio Cota <ecg@google.com> 1653273470 -0400
committer MITSUNARI Shigeo <herumi@nifty.com> 1654044477 +0900

memfd: keep file descriptor open during allocation lifetime

Otherwise checkpoint/restore cannot work without CAP_SYS_ADMIN,
since closed memfd's cannot be migrated by unprivileged users.

While at it, close the file when before returning from a
ftruncate/mmap failure.