1 /*
2 +----------------------------------------------------------------------+
3 | PHP Version 7 |
4 +----------------------------------------------------------------------+
5 | Copyright (c) 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 #include "TSRM.h"
20 #include "php_signal.h"
21 #include "Zend/zend.h"
22 #include "Zend/zend_signal.h"
23
24 /* php_signal using sigaction is derived from Advanced Programing
25 * in the Unix Environment by W. Richard Stevens p 298. */
php_signal4(int signo,Sigfunc * func,int restart,int mask_all)26 Sigfunc *php_signal4(int signo, Sigfunc *func, int restart, int mask_all)
27 {
28 struct sigaction act,oact;
29
30 #ifdef HAVE_STRUCT_SIGINFO_T
31 act.sa_sigaction = func;
32 #else
33 act.sa_handler = func;
34 #endif
35 if (mask_all) {
36 sigfillset(&act.sa_mask);
37 } else {
38 sigemptyset(&act.sa_mask);
39 }
40 act.sa_flags = 0;
41 #ifdef HAVE_STRUCT_SIGINFO_T
42 act.sa_flags |= SA_SIGINFO;
43 #endif
44 if (!restart) {
45 #ifdef SA_INTERRUPT
46 act.sa_flags |= SA_INTERRUPT; /* SunOS */
47 #endif
48 } else {
49 #ifdef SA_RESTART
50 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
51 #endif
52 }
53 if (zend_sigaction(signo, &act, &oact) < 0) {
54 return (Sigfunc*)SIG_ERR;
55 }
56
57 #ifdef HAVE_STRUCT_SIGINFO_T
58 return oact.sa_sigaction;
59 #else
60 return oact.sa_handler;
61 #endif
62 }
63
php_signal(int signo,Sigfunc * func,int restart)64 Sigfunc *php_signal(int signo, Sigfunc *func, int restart)
65 {
66 return php_signal4(signo, func, restart, 0);
67 }
68
