Annotation of src/usr.bin/tmux/signal.c, Revision 1.3
1.3 ! nicm 1: /* $Id$ */
1.1 nicm 2:
3: /*
4: * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
5: * Copyright (c) 2010 Romain Francoise <rfrancoise@debian.org>
6: *
7: * Permission to use, copy, modify, and distribute this software for any
8: * purpose with or without fee is hereby granted, provided that the above
9: * copyright notice and this permission notice appear in all copies.
10: *
11: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15: * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
16: * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
17: * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18: */
19:
1.3 ! nicm 20: #include <string.h>
1.1 nicm 21: #include <signal.h>
22:
23: #include "tmux.h"
24:
25: struct event ev_sigchld;
26: struct event ev_sigcont;
27: struct event ev_sigterm;
28: struct event ev_sigusr1;
29: struct event ev_sigwinch;
30:
31: void
1.3 ! nicm 32: set_signals(void(*handler)(int, short, unused void *))
1.1 nicm 33: {
34: struct sigaction sigact;
35:
36: memset(&sigact, 0, sizeof sigact);
37: sigemptyset(&sigact.sa_mask);
38: sigact.sa_flags = SA_RESTART;
39: sigact.sa_handler = SIG_IGN;
40: if (sigaction(SIGINT, &sigact, NULL) != 0)
41: fatal("sigaction failed");
42: if (sigaction(SIGPIPE, &sigact, NULL) != 0)
43: fatal("sigaction failed");
44: if (sigaction(SIGUSR2, &sigact, NULL) != 0)
45: fatal("sigaction failed");
46: if (sigaction(SIGTSTP, &sigact, NULL) != 0)
47: fatal("sigaction failed");
48: if (sigaction(SIGHUP, &sigact, NULL) != 0)
49: fatal("sigaction failed");
50:
51: signal_set(&ev_sigchld, SIGCHLD, handler, NULL);
52: signal_add(&ev_sigchld, NULL);
53: signal_set(&ev_sigcont, SIGCONT, handler, NULL);
54: signal_add(&ev_sigcont, NULL);
55: signal_set(&ev_sigterm, SIGTERM, handler, NULL);
56: signal_add(&ev_sigterm, NULL);
57: signal_set(&ev_sigusr1, SIGUSR1, handler, NULL);
58: signal_add(&ev_sigusr1, NULL);
59: signal_set(&ev_sigwinch, SIGWINCH, handler, NULL);
60: signal_add(&ev_sigwinch, NULL);
61: }
62:
63: void
64: clear_signals(void)
65: {
66: struct sigaction sigact;
67:
68: memset(&sigact, 0, sizeof sigact);
69: sigemptyset(&sigact.sa_mask);
70: sigact.sa_flags = SA_RESTART;
71: sigact.sa_handler = SIG_DFL;
72: if (sigaction(SIGINT, &sigact, NULL) != 0)
73: fatal("sigaction failed");
74: if (sigaction(SIGPIPE, &sigact, NULL) != 0)
75: fatal("sigaction failed");
76: if (sigaction(SIGUSR2, &sigact, NULL) != 0)
77: fatal("sigaction failed");
78: if (sigaction(SIGTSTP, &sigact, NULL) != 0)
79: fatal("sigaction failed");
80: if (sigaction(SIGHUP, &sigact, NULL) != 0)
81: fatal("sigaction failed");
82:
83: event_del(&ev_sigchld);
84: event_del(&ev_sigcont);
85: event_del(&ev_sigterm);
86: event_del(&ev_sigusr1);
87: event_del(&ev_sigwinch);
88: }