From fadab9eaa2c19f0d9a5eda293861028355a22e46 Mon Sep 17 00:00:00 2001
From: Lubos Dolezel <lubos@dolezel.info>
Date: Sat, 31 Oct 2015 21:56:58 +0100
Subject: [PATCH] Add sys_link()

---
 src/kernel/emulation/linux/CMakeLists.txt |  1 +
 src/kernel/emulation/linux/syscalls.c     |  2 ++
 src/kernel/emulation/linux/unistd/link.c  | 18 ++++++++++++++++++
 src/kernel/emulation/linux/unistd/link.h  |  7 +++++++
 4 files changed, 28 insertions(+)
 create mode 100644 src/kernel/emulation/linux/unistd/link.c
 create mode 100644 src/kernel/emulation/linux/unistd/link.h

diff --git a/src/kernel/emulation/linux/CMakeLists.txt b/src/kernel/emulation/linux/CMakeLists.txt
index 55dd4817e..4a076425f 100644
--- a/src/kernel/emulation/linux/CMakeLists.txt
+++ b/src/kernel/emulation/linux/CMakeLists.txt
@@ -45,6 +45,7 @@ set(emulation_sources
 	unistd/access.c
 	unistd/readlink.c
 	unistd/symlink.c
+	unistd/link.c
 	unistd/umask.c
 	unistd/chroot.c
 	process/vfork.c
diff --git a/src/kernel/emulation/linux/syscalls.c b/src/kernel/emulation/linux/syscalls.c
index 91460b040..7d95a3d5d 100644
--- a/src/kernel/emulation/linux/syscalls.c
+++ b/src/kernel/emulation/linux/syscalls.c
@@ -34,6 +34,7 @@
 #include "unistd/symlink.h"
 #include "unistd/umask.h"
 #include "unistd/chroot.h"
+#include "unistd/link.h"
 #include "signal/kill.h"
 #include "signal/sigaltstack.h"
 #include "signal/sigaction.h"
@@ -70,6 +71,7 @@ void* __bsd_syscall_table[512] = {
 	[4] = sys_write,
 	[5] = sys_open,
 	[6] = sys_close,
+	[9] = sys_link,
 	[13] = sys_fchdir,
 	[18] = sys_getfsstat,
 	[20] = sys_getpid,
diff --git a/src/kernel/emulation/linux/unistd/link.c b/src/kernel/emulation/linux/unistd/link.c
new file mode 100644
index 000000000..b04c5dfb1
--- /dev/null
+++ b/src/kernel/emulation/linux/unistd/link.c
@@ -0,0 +1,18 @@
+#include "link.h"
+#include "../base.h"
+#include "../errno.h"
+#include <asm/unistd.h>
+
+long sys_link(const char* path, const char* link)
+{
+	int ret;
+
+	// TODO: case translation
+
+	ret = LINUX_SYSCALL(__NR_link, path, link);
+	if (ret < 0)
+		ret = errno_linux_to_bsd(ret);
+
+	return ret;
+}
+
diff --git a/src/kernel/emulation/linux/unistd/link.h b/src/kernel/emulation/linux/unistd/link.h
new file mode 100644
index 000000000..59d72b72f
--- /dev/null
+++ b/src/kernel/emulation/linux/unistd/link.h
@@ -0,0 +1,7 @@
+#ifndef LINUX_LINK_H
+#define LINUX_LINK_H
+
+long sys_link(const char* path, const char* link);
+
+#endif
+
-- 
2.51.2