From 6593f9241bd1722ed981467388f2ed952f1137e0 Mon Sep 17 00:00:00 2001
From: apio <blobs.trading@gmail.com>
Date: Wed, 2 Aug 2023 17:19:16 +0200
Subject: [PATCH] libc: Add wrapper for poll()

---
 libc/CMakeLists.txt     |  1 +
 libc/include/sys/poll.h | 20 ++++++++++++++++++++
 libc/src/sys/poll.cpp   | 13 +++++++++++++
 3 files changed, 34 insertions(+)
 create mode 100644 libc/include/sys/poll.h
 create mode 100644 libc/src/sys/poll.cpp

diff --git a/libc/CMakeLists.txt b/libc/CMakeLists.txt
index 54c95acf..bb4a0d7a 100644
--- a/libc/CMakeLists.txt
+++ b/libc/CMakeLists.txt
@@ -32,6 +32,7 @@ set(SOURCES
     src/sys/pstat.cpp
     src/sys/resource.cpp
     src/sys/socket.cpp
+    src/sys/poll.cpp
 )
 
 if(${LUNA_ARCH} STREQUAL "x86_64")
diff --git a/libc/include/sys/poll.h b/libc/include/sys/poll.h
new file mode 100644
index 00000000..3a878c0c
--- /dev/null
+++ b/libc/include/sys/poll.h
@@ -0,0 +1,20 @@
+/* sys/poll.h: Wait for events on multiple file descriptors. */
+
+#ifndef _SYS_POLL_H
+#define _SYS_POLL_H
+
+#include <bits/poll.h>
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+    /* Wait for events on multiple file descriptors. */
+    int poll(struct pollfd* fds, nfds_t nfds, int timeout);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/libc/src/sys/poll.cpp b/libc/src/sys/poll.cpp
new file mode 100644
index 00000000..90fd69b5
--- /dev/null
+++ b/libc/src/sys/poll.cpp
@@ -0,0 +1,13 @@
+#include <bits/errno-return.h>
+#include <sys/poll.h>
+#include <sys/syscall.h>
+#include <unistd.h>
+
+extern "C"
+{
+    int poll(struct pollfd* fds, nfds_t nfds, int timeout)
+    {
+        long rc = syscall(SYS_poll, fds, nfds, timeout);
+        __errno_return(rc, int);
+    }
+}