Add os.Link, os.Symlink, os.Readlink.

R=r,rsc
DELTA=161  (161 added, 0 deleted, 0 changed)
OCL=28745
CL=28747

2 files changed, 40 insertions, 0 deletions

diff --git a/src/lib/syscall/file_darwin.go b/src/lib/syscall/file_darwin.go
index 01005d207b..558d66c917 100644
--- a/src/lib/syscall/file_darwin.go
+++ b/src/lib/syscall/file_darwin.go
@@ -110,3 +110,23 @@ func Chdir(dir string) (ret int64, errno int64) {
 	r1, r2, err := Syscall(SYS_CHDIR, int64(uintptr(unsafe.Pointer(namebuf))), 0, 0);
 	return r1, err;
 }
+
+func Link(oldpath, newpath string) (ret int64, errno int64) {
+	oldbuf := StringBytePtr(oldpath);
+	newbuf := StringBytePtr(newpath);
+	r1, r2, err := Syscall(SYS_LINK, int64(uintptr(unsafe.Pointer(oldbuf))), int64(uintptr(unsafe.Pointer(newbuf))), 0);
+	return r1, err;
+}
+
+func Symlink(oldpath, newpath string) (ret int64, errno int64) {
+	oldbuf := StringBytePtr(oldpath);
+	newbuf := StringBytePtr(newpath);
+	r1, r2, err := Syscall(SYS_SYMLINK, int64(uintptr(unsafe.Pointer(oldbuf))), int64(uintptr(unsafe.Pointer(newbuf))), 0);
+	return r1, err;
+}
+
+func Readlink(path string, buf *byte, nbytes int64) (ret int64, errno int64) {
+	pathbuf := StringBytePtr(path);
+	r1, r2, err := Syscall(SYS_READLINK, int64(uintptr(unsafe.Pointer(pathbuf))), int64(uintptr(unsafe.Pointer(buf))), nbytes);
+	return r1, err;
+}
diff --git a/src/lib/syscall/file_linux.go b/src/lib/syscall/file_linux.go
index 80800b6158..c7299f8393 100644
--- a/src/lib/syscall/file_linux.go
+++ b/src/lib/syscall/file_linux.go
@@ -111,3 +111,23 @@ func Chdir(dir string) (ret int64, errno int64) {
 	r1, r2, err := Syscall(SYS_CHDIR, int64(uintptr(unsafe.Pointer(namebuf))), 0, 0);
 	return r1, err;
 }
+
+func Link(oldpath, newpath string) (ret int64, errno int64) {
+	oldbuf := StringBytePtr(oldpath);
+	newbuf := StringBytePtr(newpath);
+	r1, r2, err := Syscall(SYS_LINK, int64(uintptr(unsafe.Pointer(oldbuf))), int64(uintptr(unsafe.Pointer(newbuf))), 0);
+	return r1, err;
+}
+
+func Symlink(oldpath, newpath string) (ret int64, errno int64) {
+	oldbuf := StringBytePtr(oldpath);
+	newbuf := StringBytePtr(newpath);
+	r1, r2, err := Syscall(SYS_SYMLINK, int64(uintptr(unsafe.Pointer(oldbuf))), int64(uintptr(unsafe.Pointer(newbuf))), 0);
+	return r1, err;
+}
+
+func Readlink(path string, buf *byte, nbytes int64) (ret int64, errno int64) {
+	pathbuf := StringBytePtr(path);
+	r1, r2, err := Syscall(SYS_READLINK, int64(uintptr(unsafe.Pointer(pathbuf))), int64(uintptr(unsafe.Pointer(buf))), nbytes);
+	return r1, err;
+}