Add a new 'struct epoll' to the userspace eventpoll interface. Buffers
supplied to read() & write() calls on eventpolls are interpreted as
arrays of this structure. The new structure's only functional difference
from epoll_event is it also holds the associated file descriptor (needed
for write() to properly create events but useful information in general).
Also define the ioctl() command macros to set & get the timeout of an
eventpoll.
Signed-off-by: Nathaniel Yazdani <n1ght.4nd....@gmail.com>
---
diff --git a/include/uapi/linux/eventpoll.h b/include/uapi/linux/eventpoll.h
index bc81fb2..73f817c 100644
--- a/include/uapi/linux/eventpoll.h
+++ b/include/uapi/linux/eventpoll.h
@@ -56,11 +56,21 @@
#define EPOLL_PACKED
#endif
+/* ioctl() requests */
+#define EPIOC_GETTIMEOUT _IOR('$', 0x10, int)
+#define EPIOC_SETTIMEOUT _IOW('$', 0x11, int)
+
struct epoll_event {
__u32 events;
__u64 data;
} EPOLL_PACKED;
+struct epoll {
+ int ep_fildes; /* file descriptor */
+ int ep_events; /* triggering events */
+ long long ep_ident; /* entry ID (cf. epoll_event->data) */
+} EPOLL_PACKED; /* A.K.A. "epe" for "eventpoll entry" */
+
#ifdef CONFIG_PM_SLEEP
static inline void ep_take_care_of_epollwakeup(struct epoll_event *epev)
{
--
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