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-rw-r--r--toys/logname.c29
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diff --git a/toys/logname.c b/toys/logname.c
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+/* vi: set sw=4 ts=4:
+ *
+ * logname.c - Print user's login name.
+ *
+ * Copyright 2012 Elie De Brauwer <eliedebrauwer@gmail.com>
+ *
+ * See http://pubs.opengroup.org/onlinepubs/9699919799/utilities/logname.html
+
+USE_LOGNAME(NEWTOY(logname, ">0", TOYFLAG_BIN))
+
+config LOGNAME
+ bool "logname"
+ default y
+ help
+ usage: logname
+
+ Prints the calling user's name or an error when this cannot be
+ determined.
+*/
+
+#include "toys.h"
+
+void logname_main(void)
+{
+ if (getlogin_r(toybuf, sizeof(toybuf))){
+ error_exit("no login name");
+ }
+ xputs(toybuf);
+}