From 236d2f558312262d86504309292a2358283f626c Mon Sep 17 00:00:00 2001
From: Philippe Charnier <charnier@FreeBSD.org>
Date: Fri, 8 Aug 1997 12:24:49 +0000
Subject: [PATCH] Add usage(). Use err(3) instead of local redefinition.

---
 usr.bin/script/script.1 |  6 ++---
 usr.bin/script/script.c | 60 +++++++++++++++--------------------------
 2 files changed, 24 insertions(+), 42 deletions(-)

diff --git a/usr.bin/script/script.1 b/usr.bin/script/script.1
index deda037af052..7c1032f0509f 100644
--- a/usr.bin/script/script.1
+++ b/usr.bin/script/script.1
@@ -38,7 +38,7 @@
 .Nm script
 .Nd make typescript of terminal session
 .Sh SYNOPSIS
-.Nm script
+.Nm
 .Op Fl a
 .Op Ar file
 .Sh DESCRIPTION
@@ -99,7 +99,7 @@ The following environment variable is utilized by
 If the variable
 .Ev SHELL
 exists, the shell forked by
-.Nm script
+.Nm
 will be that shell. If
 .Ev SHELL
 is not set, the Bourne shell
@@ -112,7 +112,7 @@ is assumed. (Most shells set this variable automatically).
 mechanism).
 .Sh HISTORY
 The
-.Nm script
+.Nm
 command appeared in
 .Bx 3.0 .
 .Sh BUGS
diff --git a/usr.bin/script/script.c b/usr.bin/script/script.c
index 6c9ed08f6c22..5952a9b64e6c 100644
--- a/usr.bin/script/script.c
+++ b/usr.bin/script/script.c
@@ -32,13 +32,17 @@
  */
 
 #ifndef lint
-static char copyright[] =
+static const char copyright[] =
 "@(#) Copyright (c) 1980, 1992, 1993\n\
 	The Regents of the University of California.  All rights reserved.\n";
 #endif /* not lint */
 
 #ifndef lint
+#if 0
 static char sccsid[] = "@(#)script.c	8.1 (Berkeley) 6/6/93";
+#endif
+static const char rcsid[] =
+	"$Id$";
 #endif /* not lint */
 
 #include <sys/types.h>
@@ -47,8 +51,9 @@ static char sccsid[] = "@(#)script.c	8.1 (Berkeley) 6/6/93";
 #include <sys/ioctl.h>
 #include <sys/time.h>
 
-#include <errno.h>
+#include <err.h>
 #include <fcntl.h>
+#include <libutil.h>
 #include <paths.h>
 #include <signal.h>
 #include <stdio.h>
@@ -68,10 +73,10 @@ struct	termios tt;
 void	done __P((void)) __dead2;
 void	dooutput __P((void));
 void	doshell __P((void));
-void	err __P((const char *, ...));
 void	fail __P((void));
 void	finish __P((int));
 void	scriptflush __P((int));
+static void usage __P((void));
 
 int
 main(argc, argv)
@@ -92,8 +97,7 @@ main(argc, argv)
 			break;
 		case '?':
 		default:
-			(void)fprintf(stderr, "usage: script [-a] [file]\n");
-			exit(1);
+			usage();
 		}
 	argc -= optind;
 	argv += optind;
@@ -104,12 +108,12 @@ main(argc, argv)
 		fname = "typescript";
 
 	if ((fscript = fopen(fname, aflg ? "a" : "w")) == NULL)
-		err("%s: %s", fname, strerror(errno));
+		err(1, "%s", fname);
 
 	(void)tcgetattr(STDIN_FILENO, &tt);
 	(void)ioctl(STDIN_FILENO, TIOCGWINSZ, &win);
 	if (openpty(&master, &slave, NULL, &tt, &win) == -1)
-		err("openpty: %s", strerror(errno));
+		err(1, "openpty");
 
 	(void)printf("Script started, output file is %s\n", fname);
 	rtt = tt;
@@ -120,13 +124,13 @@ main(argc, argv)
 	(void)signal(SIGCHLD, finish);
 	child = fork();
 	if (child < 0) {
-		perror("fork");
+		warn("fork");
 		fail();
 	}
 	if (child == 0) {
 		subchild = child = fork();
 		if (child < 0) {
-			perror("fork");
+			warn("fork");
 			fail();
 		}
 		if (child)
@@ -141,6 +145,13 @@ main(argc, argv)
 	done();
 }
 
+static void
+usage()
+{
+	(void)fprintf(stderr, "usage: script [-a] [file]\n");
+	exit(1);
+}
+
 void
 finish(signo)
 	int signo;
@@ -208,7 +219,7 @@ doshell()
 	(void)fclose(fscript);
 	login_tty(slave);
 	execl(shell, "sh", "-i", NULL);
-	perror(shell);
+	warn(shell);
 	fail();
 }
 
@@ -236,32 +247,3 @@ done()
 	}
 	exit(0);
 }
-
-#if __STDC__
-#include <stdarg.h>
-#else
-#include <varargs.h>
-#endif
-
-void
-#if __STDC__
-err(const char *fmt, ...)
-#else
-err(fmt, va_alist)
-	char *fmt;
-	va_dcl
-#endif
-{
-	va_list ap;
-#if __STDC__
-	va_start(ap, fmt);
-#else
-	va_start(ap);
-#endif
-	(void)fprintf(stderr, "script: ");
-	(void)vfprintf(stderr, fmt, ap);
-	va_end(ap);
-	(void)fprintf(stderr, "\n");
-	exit(1);
-	/* NOTREACHED */
-}