diff options
Diffstat (limited to 'pkg/sentry/syscalls/linux')
| -rw-r--r-- | pkg/sentry/syscalls/linux/vfs2/timerfd.go | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/pkg/sentry/syscalls/linux/vfs2/timerfd.go b/pkg/sentry/syscalls/linux/vfs2/timerfd.go index 7938a5249..839a07db1 100644 --- a/pkg/sentry/syscalls/linux/vfs2/timerfd.go +++ b/pkg/sentry/syscalls/linux/vfs2/timerfd.go @@ -46,7 +46,10 @@ func TimerfdCreate(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel default: return 0, nil, syserror.EINVAL } - file, err := t.Kernel().VFS().NewTimerFD(clock, fileFlags) + // Timerfds aren't writable per se (their implementation of Write just + // returns EINVAL), but they are "opened for writing", which is necessary + // to actually reach said implementation of Write. + file, err := t.Kernel().VFS().NewTimerFD(clock, linux.O_RDWR|fileFlags) if err != nil { return 0, nil, err } |