diff options
Diffstat (limited to 'signal.c')
| -rw-r--r-- | signal.c | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/signal.c b/signal.c new file mode 100644 index 00000000..4bfcdc87 --- /dev/null +++ b/signal.c @@ -0,0 +1,90 @@ +/* $OpenBSD$ */ + +/* + * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net> + * Copyright (c) 2010 Romain Francoise <rfrancoise@debian.org> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER + * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING + * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <sys/types.h> + +#include <signal.h> +#include <string.h> + +#include "tmux.h" + +struct event ev_sigchld; +struct event ev_sigcont; +struct event ev_sigterm; +struct event ev_sigusr1; +struct event ev_sigwinch; + +void +set_signals(void(*handler)(int, short, void *)) +{ + struct sigaction sigact; + + 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(SIGUSR2, &sigact, NULL) != 0) + fatal("sigaction failed"); + if (sigaction(SIGTSTP, &sigact, NULL) != 0) + fatal("sigaction failed"); + if (sigaction(SIGHUP, &sigact, NULL) != 0) + fatal("sigaction failed"); + + signal_set(&ev_sigchld, SIGCHLD, handler, NULL); + signal_add(&ev_sigchld, NULL); + signal_set(&ev_sigcont, SIGCONT, handler, NULL); + signal_add(&ev_sigcont, NULL); + signal_set(&ev_sigterm, SIGTERM, handler, NULL); + signal_add(&ev_sigterm, NULL); + signal_set(&ev_sigusr1, SIGUSR1, handler, NULL); + signal_add(&ev_sigusr1, NULL); + signal_set(&ev_sigwinch, SIGWINCH, handler, NULL); + signal_add(&ev_sigwinch, NULL); +} + +void +clear_signals(void) +{ + struct sigaction sigact; + + memset(&sigact, 0, sizeof sigact); + sigemptyset(&sigact.sa_mask); + sigact.sa_flags = SA_RESTART; + sigact.sa_handler = SIG_DFL; + if (sigaction(SIGINT, &sigact, NULL) != 0) + fatal("sigaction failed"); + if (sigaction(SIGPIPE, &sigact, NULL) != 0) + fatal("sigaction failed"); + if (sigaction(SIGUSR2, &sigact, NULL) != 0) + fatal("sigaction failed"); + if (sigaction(SIGTSTP, &sigact, NULL) != 0) + fatal("sigaction failed"); + if (sigaction(SIGHUP, &sigact, NULL) != 0) + fatal("sigaction failed"); + + event_del(&ev_sigchld); + event_del(&ev_sigcont); + event_del(&ev_sigterm); + event_del(&ev_sigusr1); + event_del(&ev_sigwinch); +} |