1                 : /*
       2                 :    +----------------------------------------------------------------------+
       3                 :    | PHP Version 5                                                        |
       4                 :    +----------------------------------------------------------------------+
       5                 :    | Copyright (c) 1997-2009 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: php_signal.c 272374 2008-12-31 11:17:49Z sebastian $ */
      20                 : 
      21                 : #include "php_signal.h"
      22                 : 
      23                 : /* php_signal using sigaction is derrived from Advanced Programing
      24                 :  * in the Unix Environment by W. Richard Stevens p 298. */
      25                 : Sigfunc *php_signal(int signo, Sigfunc *func, int restart)
      26               0 : {
      27                 :  
      28                 :         struct sigaction act,oact;
      29               0 :         act.sa_handler = func;
      30               0 :         sigemptyset(&act.sa_mask);
      31               0 :         act.sa_flags = 0;
      32               0 :         if (signo == SIGALRM || (! restart)) {
      33                 : #ifdef SA_INTERRUPT
      34               0 :                 act.sa_flags |= SA_INTERRUPT; /* SunOS */
      35                 : #endif
      36                 :         } else {
      37                 : #ifdef SA_RESTART
      38               0 :                 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
      39                 : #endif
      40                 :         }
      41               0 :         if (sigaction(signo, &act, &oact) < 0)
      42               0 :                 return SIG_ERR;
      43                 :  
      44               0 :         return oact.sa_handler;
      45                 : }
      46                 :