xref: /PHP-5.6/ext/pcntl/php_signal.c (revision 49493a2d)
1 /*
2    +----------------------------------------------------------------------+
3    | PHP Version 5                                                        |
4    +----------------------------------------------------------------------+
5    | Copyright (c) 1997-2016 The PHP Group                                |
6    +----------------------------------------------------------------------+
7    | This source file is subject to version 3.01 of the PHP license,      |
8    | that is bundled with this package in the file LICENSE, and is        |
9    | available through the world-wide-web at the following url:           |
10    | http://www.php.net/license/3_01.txt                                  |
11    | If you did not receive a copy of the PHP license and are unable to   |
12    | obtain it through the world-wide-web, please send a note to          |
13    | license@php.net so we can mail you a copy immediately.               |
14    +----------------------------------------------------------------------+
15    | Author: Jason Greene <jason@inetgurus.net>                           |
16    +----------------------------------------------------------------------+
17 */
18 
19 /* $Id$ */
20 
21 #include "TSRM.h"
22 #include "php_signal.h"
23 #include "Zend/zend.h"
24 #include "Zend/zend_signal.h"
25 
26 /* php_signal using sigaction is derived from Advanced Programing
27  * in the Unix Environment by W. Richard Stevens p 298. */
php_signal4(int signo,Sigfunc * func,int restart,int mask_all)28 Sigfunc *php_signal4(int signo, Sigfunc *func, int restart, int mask_all)
29 {
30 	struct sigaction act,oact;
31 #ifdef ZEND_SIGNALS
32 	TSRMLS_FETCH();
33 #endif
34 	act.sa_handler = func;
35 	if (mask_all) {
36 		sigfillset(&act.sa_mask);
37 	} else {
38 		sigemptyset(&act.sa_mask);
39 	}
40 	act.sa_flags = 0;
41 	if (signo == SIGALRM || (! restart)) {
42 #ifdef SA_INTERRUPT
43 		act.sa_flags |= SA_INTERRUPT; /* SunOS */
44 #endif
45 	} else {
46 #ifdef SA_RESTART
47 		act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
48 #endif
49 	}
50 #ifdef ZEND_SIGNALS
51 	if (zend_sigaction(signo, &act, &oact TSRMLS_CC) < 0)
52 #else
53 	if (sigaction(signo, &act, &oact) < 0)
54 #endif
55 	{
56 		return SIG_ERR;
57 	}
58 
59 	return oact.sa_handler;
60 }
61 
php_signal(int signo,Sigfunc * func,int restart)62 Sigfunc *php_signal(int signo, Sigfunc *func, int restart)
63 {
64 	return php_signal4(signo, func, restart, 0);
65 }
66 
67 /*
68  * Local variables:
69  * tab-width: 4
70  * c-basic-offset: 4
71  * End:
72  * vim600: noet sw=4 ts=4 fdm=marker
73  * vim<600: noet sw=4 ts=4
74  */
75