From 7f04b67582bbb3d65a4ce5516d3e12cccee62ef3 Mon Sep 17 00:00:00 2001
From: Max Wash <mbswash@gmail.com>
Date: Thu, 6 Jan 2022 11:37:23 +0000
Subject: [PATCH] Implemented open() and openat() on Horizon

---
 photon/libc/sys/horizon/unistd.c | 36 +++++++++++++++++++++-----------
 photon/libc/sys/horizon/unistd.h |  4 +++-
 2 files changed, 27 insertions(+), 13 deletions(-)

diff --git a/photon/libc/sys/horizon/unistd.c b/photon/libc/sys/horizon/unistd.c
index 96afd1b..3382f75 100644
--- a/photon/libc/sys/horizon/unistd.c
+++ b/photon/libc/sys/horizon/unistd.c
@@ -2,6 +2,30 @@
 #include <errno.h>
 #include <mio/fs.h>
 
+int open(const char *pathname, int flags, ...)
+{
+    int ret = mio_open(pathname, flags);
+    if (ret < 0) {
+        __set_errno(-ret);
+        return -1;
+    }
+
+    __set_errno(0);
+    return ret;
+}
+
+int openat(int dirfd, const char *pathname, int flags, ...)
+{
+    int ret = mio_openat(dirfd, pathname, flags);
+    if (ret < 0) {
+        __set_errno(-ret);
+        return -1;
+    }
+
+    __set_errno(0);
+    return ret;
+}
+
 ssize_t read(int fd, void *buf, size_t count)
 {
     ssize_t ret = mio_read(fd, buf, count);
@@ -26,18 +50,6 @@ ssize_t write(int fd, const void *buf, size_t count)
     return ret;
 }
 
-int open(const char *pathname, int flags)
-{
-    int ret = mio_open(pathname, flags);
-    if (ret < 0) {
-        __set_errno(-ret);
-        return -1;
-    }
-
-    __set_errno(0);
-    return ret;
-}
-
 int close(int fd)
 {
     int ret = mio_close(fd);
diff --git a/photon/libc/sys/horizon/unistd.h b/photon/libc/sys/horizon/unistd.h
index 76fcc64..11b83de 100644
--- a/photon/libc/sys/horizon/unistd.h
+++ b/photon/libc/sys/horizon/unistd.h
@@ -9,9 +9,11 @@
 struct stat;
 struct pollfd;
 
+extern int open(const char *pathname, int flags, ...);
+extern int openat(int dirfd, const char *pathname, int flags, ...);
+
 extern ssize_t read(int fd, void *buf, size_t count);
 extern ssize_t write(int fd, const void *buf, size_t count);
-extern int open(const char *pathname, int flags);
 extern int close(int fd);
 
 #endif