From e7ca2a51a89a8ff2c9f5adfdfa5b51be1b3faeb3 Mon Sep 17 00:00:00 2001 From: Bhasker Hariharan Date: Wed, 24 Mar 2021 12:08:24 -0700 Subject: Add POLLRDNORM/POLLWRNORM support. On Linux these are meant to be equivalent to POLLIN/POLLOUT. Rather than hack these on in sys_poll etc it felt cleaner to just cleanup the call sites to notify for both events. This is what linux does as well. Fixes #5544 PiperOrigin-RevId: 364859977 --- pkg/sentry/syscalls/linux/vfs2/epoll.go | 2 +- pkg/sentry/syscalls/linux/vfs2/read_write.go | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-) (limited to 'pkg/sentry/syscalls/linux/vfs2') diff --git a/pkg/sentry/syscalls/linux/vfs2/epoll.go b/pkg/sentry/syscalls/linux/vfs2/epoll.go index d0cbb77eb..b980aa43e 100644 --- a/pkg/sentry/syscalls/linux/vfs2/epoll.go +++ b/pkg/sentry/syscalls/linux/vfs2/epoll.go @@ -169,7 +169,7 @@ func EpollWait(t *kernel.Task, args arch.SyscallArguments) (uintptr, *kernel.Sys if ch == nil { var w waiter.Entry w, ch = waiter.NewChannelEntry(nil) - epfile.EventRegister(&w, waiter.EventIn) + epfile.EventRegister(&w, waiter.ReadableEvents) defer epfile.EventUnregister(&w) } else { // Set up the timer if a timeout was specified. diff --git a/pkg/sentry/syscalls/linux/vfs2/read_write.go b/pkg/sentry/syscalls/linux/vfs2/read_write.go index c7417840f..b863d7b84 100644 --- a/pkg/sentry/syscalls/linux/vfs2/read_write.go +++ b/pkg/sentry/syscalls/linux/vfs2/read_write.go @@ -30,8 +30,8 @@ import ( ) const ( - eventMaskRead = waiter.EventIn | waiter.EventHUp | waiter.EventErr - eventMaskWrite = waiter.EventOut | waiter.EventHUp | waiter.EventErr + eventMaskRead = waiter.EventRdNorm | waiter.EventIn | waiter.EventHUp | waiter.EventErr + eventMaskWrite = waiter.EventWrNorm | waiter.EventOut | waiter.EventHUp | waiter.EventErr ) // Read implements Linux syscall read(2). -- cgit v1.2.3