hare

commit 7d7decca68ba1b0f3b252d2868d7b857df115973
parent 6f308f1bd2edcc184473a840b9c30644763f7aa4
Author: Mykyta Holubakha <hilobakho@gmail.com>
Date:   Sun, 14 Mar 2021 00:55:45 +0200

rt: epoll syscalls

Diffstat:
M
rt/+linux/syscalls.ha
 | 
40
++++++++++++++++++++++++++++++++++++++++
M
rt/+linux/types.ha
 | 
36
++++++++++++++++++++++++++++++++++++

2 files changed, 76 insertions(+), 0 deletions(-)
diff --git a/rt/+linux/syscalls.ha b/rt/+linux/syscalls.ha
@@ -308,6 +308,46 @@ export fn poll(fds: *pollfd, nfds: nfds_t, timeout: int) (int | errno) = {
 		fds: uintptr: u64, nfds: u64, timeout: u64))?: int;
 };
 
+export fn epoll_create1(flags: int) (int | errno) = {
+	return wrap_return(syscall1(SYS_epoll_create1, flags: u64))?: int;
+};
+
+export fn epoll_create(size_: int) (int | errno) = {
+	return epoll_create1(0);
+};
+
+export fn epoll_ctl(
+	epfd: int,
+	op: int,
+	fd: int,
+	event: nullable *epoll_event
+) (int | errno) = {
+	return wrap_return(syscall4(SYS_epoll_ctl,
+		epfd: u64, op: u64, fd: u64, event: uintptr: u64))?: int;
+};
+
+export fn epoll_pwait(
+	epfd: int,
+	events: *epoll_event,
+	maxevents: int,
+	timeout: int,
+	sigmask: nullable *sigset
+) (int | errno) = {
+	return wrap_return(syscall6(SYS_epoll_pwait,
+		epfd: u64, events: uintptr: u64,
+		maxevents: u64, timeout: u64,
+		sigmask: uintptr: u64, size(sigset): u64))?: int;
+};
+
+export fn epoll_wait(
+	epfd: int,
+	events: *epoll_event,
+	maxevents: int,
+	timeout: int,
+) (int | errno) = {
+	return epoll_pwait(epfd, events, maxevents, timeout, null);
+};
+
 export fn timerfd_create(clock_id: int, flags: int) (int | errno) = {
 	return wrap_return(syscall2(SYS_timerfd_create,
 		clock_id: u64, flags: u64))?: int;
diff --git a/rt/+linux/types.ha b/rt/+linux/types.ha
@@ -334,6 +334,42 @@ export type pollfd = struct {
 	revents: i16,
 };
 
+export def EPOLL_CLOEXEC: int = O_CLOEXEC;
+
+// Valid opcodes to issue to sys_epoll_ctl()
+export def EPOLL_CTL_ADD: int = 1;
+export def EPOLL_CTL_DEL: int = 2;
+export def EPOLL_CTL_MOD: int = 3;
+
+// Epoll event masks
+export def EPOLLIN: u32 = 0x00000001;
+export def EPOLLPRI: u32 = 0x00000002;
+export def EPOLLOUT: u32 = 0x00000004;
+export def EPOLLERR: u32 = 0x00000008;
+export def EPOLLHUP: u32 = 0x00000010;
+export def EPOLLNVAL: u32 = 0x00000020;
+export def EPOLLRDNORM: u32 = 0x00000040;
+export def EPOLLRDBAND: u32 = 0x00000080;
+export def EPOLLWRNORM: u32 = 0x00000100;
+export def EPOLLWRBAND: u32 = 0x00000200;
+export def EPOLLMSG: u32 = 0x00000400;
+export def EPOLLRDHUP: u32 = 0x00002000;
+export def EPOLLWAKEUP: u32 = 1 << 29;
+export def EPOLLONESHOT: u32 = 1 << 30;
+export def EPOLLET: u32 = 1 << 31;
+
+export type epoll_data = union {
+	ptr: *void,
+	fd: int,
+	u32_: u32,
+	u64_: u64,
+};
+
+export type epoll_event = struct {
+	events: u32,
+	data: epoll_data,
+};
+
 export def TFD_TIMER_ABSTIME: int = 1;
 export def TFD_TIMER_CANCEL_ON_SET: int = 2;