make exit codes match manpage
use <sys/cdefs.h> __COPYRIGHT and __RCSID macros, prototype main()
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@ -1,4 +1,4 @@
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/* $NetBSD: mesg.c,v 1.4 1994/12/23 07:16:32 jtc Exp $ */
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/* $NetBSD: mesg.c,v 1.5 1997/08/01 04:32:44 mikel Exp $ */
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/*
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* Copyright (c) 1987, 1993
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@ -38,17 +38,18 @@
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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static char copyright[] =
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"@(#) Copyright (c) 1987, 1993\n\
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The Regents of the University of California. All rights reserved.\n";
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__COPYRIGHT("@(#) Copyright (c) 1987, 1993\n\
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The Regents of the University of California. All rights reserved.\n");
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)mesg.c 8.2 (Berkeley) 1/21/94";
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#endif
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static char rcsid[] = "$NetBSD: mesg.c,v 1.4 1994/12/23 07:16:32 jtc Exp $";
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__RCSID("$NetBSD: mesg.c,v 1.5 1997/08/01 04:32:44 mikel Exp $");
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#endif /* not lint */
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#include <sys/types.h>
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@ -61,6 +62,8 @@ static char rcsid[] = "$NetBSD: mesg.c,v 1.4 1994/12/23 07:16:32 jtc Exp $";
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#include <string.h>
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#include <unistd.h>
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int main __P((int, char **));
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int
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main(argc, argv)
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int argc;
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@ -70,7 +73,7 @@ main(argc, argv)
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char *tty;
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int ch;
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while ((ch = getopt(argc, argv, "")) != EOF)
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while ((ch = getopt(argc, argv, "")) != -1)
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switch (ch) {
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case '?':
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default:
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@ -80,9 +83,9 @@ main(argc, argv)
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argv += optind;
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if ((tty = ttyname(STDERR_FILENO)) == NULL)
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err(1, "ttyname");
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err(2, "ttyname");
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if (stat(tty, &sb) < 0)
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err(1, "%s", tty);
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err(2, "%s", tty);
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if (*argv == NULL) {
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if (sb.st_mode & S_IWGRP) {
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@ -96,11 +99,11 @@ main(argc, argv)
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switch (*argv[0]) {
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case 'y':
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if (chmod(tty, sb.st_mode | S_IWGRP) < 0)
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err(1, "%s", tty);
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err(2, "%s", tty);
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exit(0);
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case 'n':
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if (chmod(tty, sb.st_mode & ~S_IWGRP) < 0)
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err(1, "%s", tty);
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err(2, "%s", tty);
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exit(1);
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}
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