1 /*
2 +----------------------------------------------------------------------+
3 | Copyright (c) The PHP Group |
4 +----------------------------------------------------------------------+
5 | This source file is subject to version 3.01 of the PHP license, |
6 | that is bundled with this package in the file LICENSE, and is |
7 | available through the world-wide-web at the following url: |
8 | https://www.php.net/license/3_01.txt |
9 | If you did not receive a copy of the PHP license and are unable to |
10 | obtain it through the world-wide-web, please send a note to |
11 | license@php.net so we can mail you a copy immediately. |
12 +----------------------------------------------------------------------+
13 | Author: Jason Greene <jason@inetgurus.net> |
14 +----------------------------------------------------------------------+
15 */
16
17 #include "TSRM.h"
18 #include "php_signal.h"
19 #include "Zend/zend.h"
20 #include "Zend/zend_signal.h"
21
22 /* php_signal using sigaction is derived from Advanced Programming
23 * in the Unix Environment by W. Richard Stevens p 298. */
php_signal4(int signo,Sigfunc * func,int restart,int mask_all)24 Sigfunc *php_signal4(int signo, Sigfunc *func, int restart, int mask_all)
25 {
26 struct sigaction act,oact;
27
28 #ifdef HAVE_STRUCT_SIGINFO_T
29 act.sa_sigaction = func;
30 #else
31 act.sa_handler = func;
32 #endif
33 if (mask_all) {
34 sigfillset(&act.sa_mask);
35 } else {
36 sigemptyset(&act.sa_mask);
37 }
38 act.sa_flags = SA_ONSTACK;
39 #ifdef HAVE_STRUCT_SIGINFO_T
40 act.sa_flags |= SA_SIGINFO;
41 #endif
42 if (!restart) {
43 #ifdef SA_INTERRUPT
44 act.sa_flags |= SA_INTERRUPT; /* SunOS */
45 #endif
46 } else {
47 #ifdef SA_RESTART
48 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
49 #endif
50 }
51 zend_sigaction(signo, &act, &oact);
52
53 #ifdef HAVE_STRUCT_SIGINFO_T
54 return oact.sa_sigaction;
55 #else
56 return oact.sa_handler;
57 #endif
58 }
59
php_signal(int signo,Sigfunc * func,int restart)60 Sigfunc *php_signal(int signo, Sigfunc *func, int restart)
61 {
62 return php_signal4(signo, func, restart, 0);
63 }
64
