diff options
| -rw-r--r-- | fs/eventpoll.c | 20 | ||||
| -rw-r--r-- | include/linux/eventpoll.h | 4 |
2 files changed, 24 insertions, 0 deletions
diff --git a/fs/eventpoll.c b/fs/eventpoll.c index 14466765b85d..94b87aaad0f6 100644 --- a/fs/eventpoll.c +++ b/fs/eventpoll.c @@ -2474,6 +2474,26 @@ static int ep_check_params(struct file *file, struct epoll_event __user *evs, return 0; } +int epoll_sendevents(struct file *file, struct epoll_event __user *events, + int maxevents) +{ + struct eventpoll *ep; + int ret; + + ret = ep_check_params(file, events, maxevents); + if (unlikely(ret)) + return ret; + + ep = file->private_data; + /* + * Racy call, but that's ok - it should get retried based on + * poll readiness anyway. + */ + if (ep_events_available(ep)) + return ep_try_send_events(ep, events, maxevents); + return 0; +} + /* * Implement the event wait interface for the eventpoll file. It is the kernel * part of the user space epoll_wait(2). diff --git a/include/linux/eventpoll.h b/include/linux/eventpoll.h index 0c0d00fcd131..ccb478eb174b 100644 --- a/include/linux/eventpoll.h +++ b/include/linux/eventpoll.h @@ -25,6 +25,10 @@ struct file *get_epoll_tfile_raw_ptr(struct file *file, int tfd, unsigned long t /* Used to release the epoll bits inside the "struct file" */ void eventpoll_release_file(struct file *file); +/* Copy ready events to userspace */ +int epoll_sendevents(struct file *file, struct epoll_event __user *events, + int maxevents); + /* * This is called from inside fs/file_table.c:__fput() to unlink files * from the eventpoll interface. We need to have this facility to cleanup |