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use daemon(3) instead of vanilla fork() 

use err(3) instead of perror..exit
add new flag: -n don't detach from tty
This commit is contained in:
proff 1999-09-03 13:31:29 +00:00
parent 143f897d3d
commit 50aa8b2b93
1 changed files with 11 additions and 10 deletions
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21
sbin/slattach/slattach.c
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@ -1,4 +1,4 @@
/* $NetBSD: slattach.c,v 1.21 1998/03/23 04:41:16 fair Exp $ */
/* $NetBSD: slattach.c,v 1.22 1999/09/03 13:31:29 proff Exp $ */
/*
* Copyright (c) 1988, 1993
@ -46,7 +46,7 @@ __COPYRIGHT("@(#) Copyright (c) 1988, 1993\n\
#if 0
static char sccsid[] = "@(#)slattach.c 8.2 (Berkeley) 1/7/94";
#else
__RCSID("$NetBSD: slattach.c,v 1.21 1998/03/23 04:41:16 fair Exp $");
__RCSID("$NetBSD: slattach.c,v 1.22 1999/09/03 13:31:29 proff Exp $");
#endif
#endif /* not lint */
@ -90,8 +90,9 @@ main(argc, argv)
tcflag_t cflag = HUPCL;
int ch;
sigset_t sigset;
int opt_detach = 1;
while ((ch = getopt(argc, argv, "hHlms:t:")) != -1) {
while ((ch = getopt(argc, argv, "hHlmns:t:")) != -1) {
switch (ch) {
case 'h':
cflag |= CRTSCTS;
@ -105,6 +106,9 @@ main(argc, argv)
case 'm':
cflag &= ~HUPCL;
break;
case 'n':
opt_detach = 0;
break;
case 's':
speed = atoi(optarg);
break;
@ -128,10 +132,8 @@ main(argc, argv)
"%s%s", _PATH_DEV, dev);
dev = devicename;
}
if ((fd = open(dev, O_RDWR | O_NDELAY)) < 0) {
perror(dev);
exit(1);
}
if ((fd = open(dev, O_RDWR | O_NDELAY)) < 0)
err(1, "%s", dev);
tty.c_cflag = CREAD | CS8 | cflag;
tty.c_iflag = 0;
tty.c_lflag = 0;
@ -145,9 +147,8 @@ main(argc, argv)
err(1, "TIOCSDTR");
if (ioctl(fd, TIOCSETD, &slipdisc) < 0)
err(1, "TIOCSETD");
if (fork() > 0)
exit(0);
if (opt_detach && daemon(0, 0) != 0)
err(1, "couldn't detach");
sigemptyset(&sigset);
for (;;)
sigsuspend(&sigset);