Add whoami.

diff --git a/toys/whoami.c b/toys/whoami.c
new file mode 100644 (file)
index 0000000..64ff295
--- /dev/null
+++ b/toys/whoami.c
@@ -0,0 +1,32 @@
+/* vi: set sw=4 ts=4:
+ *
+ * whoami.c - Print effective user id
+ *
+ * Copyright 2012 Georgi Chorbadzhiyski <georgi@unixsol.org>
+ *
+
+USE_WHOAMI(NEWTOY(whoami, NULL, TOYFLAG_USR|TOYFLAG_BIN))
+
+config WHOAMI
+       bool "whoami"
+       default y
+       help
+         usage: whoami
+
+         Print effective user id.
+*/
+
+#include "toys.h"
+
+void whoami_main(void)
+{
+       struct passwd *pw = getpwuid(geteuid());
+
+       if (!pw) {
+               perror("getpwuid");
+               toys.exitval = 1;
+               return;
+       }
+
+       xprintf("%s\n", pw->pw_name);
+}