1 files changed, 49 insertions, 0 deletions
diff --git a/src/lib/os/user.go b/src/lib/os/user.go
new file mode 100644
index 000000000..abb665b30
--- /dev/null
+++ b/src/lib/os/user.go
@@ -0,0 +1,49 @@
+// Copyright 2009 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// User ids etc.
+
+package os
+
+import (
+	"syscall";
+	"os";
+)
+
+// Getuid returns the numeric user id of the caller.
+func Getuid() (uid int, err Error) {
+	u, _, e := syscall.Syscall(syscall.SYS_GETUID, 0, 0, 0);
+	if e != 0 {
+		return -1, ErrnoToError(e)
+	}
+	return int(u), nil
+}
+
+// Geteuid returns the numeric effective user id of the caller.
+func Geteuid() (uid int, err Error) {
+	u, _, e := syscall.Syscall(syscall.SYS_GETEUID, 0, 0, 0);
+	if e != 0 {
+		return -1, ErrnoToError(e)
+	}
+	return int(u), nil
+}
+
+// Getgid returns the numeric group id of the caller.
+func Getgid() (uid int, err Error) {
+	g, _, e := syscall.Syscall(syscall.SYS_GETGID, 0, 0, 0);
+	if e != 0 {
+		return -1, ErrnoToError(e)
+	}
+	return int(g), nil
+}
+
+// Getegid returns the numeric effective group id of the caller.
+func Getegid() (uid int, err Error) {
+	g, _, e := syscall.Syscall(syscall.SYS_GETEGID, 0, 0, 0);
+	if e != 0 {
+		return -1, ErrnoToError(e)
+	}
+	return int(g), nil
+}
+