1 files changed, 44 insertions, 0 deletions
diff --git a/whoami.c b/whoami.c
new file mode 100644
index 0000000..7fd5d01
--- /dev/null
+++ b/whoami.c
@@ -0,0 +1,44 @@
+/*
+ * Mini whoami implementation for busybox
+ *
+ * Copyright (C) 2000  Edward Betts <edward@debian.org>.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include "internal.h"
+#include <stdio.h>
+#include <pwd.h>
+
+static const char whoami_usage[] = "whoami\n\n"
+"Print the user name associated with the current effective user id.\n"
+"Same as id -un.\n";
+
+extern int whoami_main(int argc, char **argv) {
+	struct passwd *pw;
+	uid_t uid;
+
+	if (argc > 1) usage (whoami_usage);
+
+	uid = geteuid ();
+	pw = getpwuid (uid);
+	if (pw) {
+		puts (pw->pw_name);
+		exit (TRUE);
+    	}
+	fprintf (stderr, "%s: cannot find username for UID %u\n", argv[0], (unsigned) uid);
+	exit (FALSE);
+}