3 files changed, 162 insertions, 0 deletions
diff --git a/usr.bin/logname/Makefile b/usr.bin/logname/Makefile
new file mode 100644
index 0000000..b8471ce
--- /dev/null
+++ b/usr.bin/logname/Makefile
@@ -0,0 +1,5 @@
+#	@(#)Makefile	8.1 (Berkeley) 6/9/93
+
+PROG=	logname
+
+.include <bsd.prog.mk>
diff --git a/usr.bin/logname/logname.1 b/usr.bin/logname/logname.1
new file mode 100644
index 0000000..fbcdb3c
--- /dev/null
+++ b/usr.bin/logname/logname.1
@@ -0,0 +1,76 @@
+.\" Copyright (c) 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the Institute of Electrical and Electronics Engineers, Inc.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)logname.1	8.1 (Berkeley) 6/9/93
+.\"
+.Dd "June 9, 1993"
+.Dt LOGNAME 1
+.Os BSD 4.4
+.Sh NAME
+.Nm logname
+.Nd display user's login name
+.Sh SYNOPSIS
+.Nm logname
+.Sh DESCRIPTION
+The
+.Nm logname
+utility writes the user's login name to standard output followed by
+a newline.
+.Pp
+The
+.Nm logname
+utility explicitly ignores the
+.Ev LOGNAME
+and
+.Ev USER
+environment variables
+because the environment cannot be trusted.
+.Pp
+The
+.Nm logname
+utility exits 0 on success, and >0 if an error occurs.
+.Sh SEE ALSO
+.Xr who 1 ,
+.Xr whoami 1 ,
+.Xr getlogin 3
+.Sh STANDARDS
+The
+.Nm logname
+function is expected to conform to
+.St -p1003.2 .
+.Sh HISTORY
+The
+.Nm
+command appears in
+.Bx 4.4 .
diff --git a/usr.bin/logname/logname.c b/usr.bin/logname/logname.c
new file mode 100644
index 0000000..98b948a
--- /dev/null
+++ b/usr.bin/logname/logname.c
@@ -0,0 +1,81 @@
+/*-
+ * Copyright (c) 1991, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1991, 1993, 1994\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)logname.c	8.2 (Berkeley) 4/3/94";
+#endif /* not lint */
+
+#include <err.h>
+#include <errno.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+void usage __P((void));
+
+int
+main(argc, argv)
+	int argc;
+	char *argv[];
+{
+	int ch;
+	char *p;
+
+	while ((ch = getopt(argc, argv, "")) != EOF)
+		switch (ch) {
+		case '?':
+		default:
+			usage();
+		}
+	argc -= optind;
+	argv += optind;
+
+	if ((p = getlogin()) == NULL)
+		err(1, NULL);
+	(void)printf("%s\n", p);
+	exit(0);
+}
+
+void
+usage()
+{
+	(void)fprintf(stderr, "usage: logname\n");
+	exit(1);
+}