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Sync OpenBSD patchset 696:

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Make signal handler setup/teardown two common functions instead of six,
and reset SIGCHLD after fork to fix problems with some shells. From
Romain Francoise.
This commit is contained in:
Tiago Cunha
2010-05-14 14:30:01 +00:00
parent d3dd6709bc
commit fc69b9ccb7
8 changed files with 122 additions and 158 deletions
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27
client.c
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@@ -1,4 +1,4 @@
/* $Id: client.c,v 1.90 2009-12-04 22:14:47 tcunha Exp $ */
/* $Id: client.c,v 1.91 2010-05-14 14:30:00 tcunha Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -176,35 +176,12 @@ client_update_event(void)
__dead void
client_main(void)
{
struct event ev_sigcont, ev_sigterm, ev_sigwinch;
struct sigaction sigact;
logfile("client");
/* Note: event_init() has already been called. */
/* Set up signals. */
memset(&sigact, 0, sizeof sigact);
sigemptyset(&sigact.sa_mask);
sigact.sa_flags = SA_RESTART;
sigact.sa_handler = SIG_IGN;
if (sigaction(SIGINT, &sigact, NULL) != 0)
fatal("sigaction failed");
if (sigaction(SIGPIPE, &sigact, NULL) != 0)
fatal("sigaction failed");
if (sigaction(SIGUSR1, &sigact, NULL) != 0)
fatal("sigaction failed");
if (sigaction(SIGUSR2, &sigact, NULL) != 0)
fatal("sigaction failed");
if (sigaction(SIGTSTP, &sigact, NULL) != 0)
fatal("sigaction failed");
signal_set(&ev_sigcont, SIGCONT, client_signal, NULL);
signal_add(&ev_sigcont, NULL);
signal_set(&ev_sigterm, SIGTERM, client_signal, NULL);
signal_add(&ev_sigterm, NULL);
signal_set(&ev_sigwinch, SIGWINCH, client_signal, NULL);
signal_add(&ev_sigwinch, NULL);
set_signals(client_signal);
/*
* imsg_read in the first client poll loop (before the terminal has