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annotate src/os/unix/ngx_daemon.c @ 576:01f2313e34f1 NGINX_0_8_40

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nginx 0.8.40 *) Security: now nginx/Windows ignores default file stream name. Thanks to Jose Antonio Vazquez Gonzalez. *) Feature: the ngx_http_uwsgi_module. Thanks to Roberto De Ioris. *) Feature: a "fastcgi_param" directive with value starting with "HTTP_" overrides a client request header line. *) Bugfix: the "If-Modified-Since", "If-Range", etc. client request header lines were passed to FastCGI-server while caching. *) Bugfix: listen unix domain socket could not be changed during reconfiguration. Thanks to Maxim Dounin.
author Igor Sysoev <http://sysoev.ru>
date Mon, 07 Jun 2010 00:00:00 +0400
parents 6cfc63e68377
children d0f7a625f27c
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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11 ngx_int_t ngx_daemon(ngx_log_t *log)
0
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12 {
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13 int fd;
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14
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15 switch (fork()) {
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16 case -1:
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17 ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "fork() failed");
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18 return NGX_ERROR;
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19
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20 case 0:
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21 break;
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22
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23 default:
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24 exit(0);
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25 }
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27 ngx_pid = ngx_getpid();
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29 if (setsid() == -1) {
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30 ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "setsid() failed");
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31 return NGX_ERROR;
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32 }
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33
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34 umask(0);
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35
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36 fd = open("/dev/null", O_RDWR);
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37 if (fd == -1) {
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38 ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
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39 "open(\"/dev/null\") failed");
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40 return NGX_ERROR;
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41 }
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42
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43 if (dup2(fd, STDIN_FILENO) == -1) {
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44 ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "dup2(STDIN) failed");
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45 return NGX_ERROR;
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46 }
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47
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48 if (dup2(fd, STDOUT_FILENO) == -1) {
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49 ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "dup2(STDOUT) failed");
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50 return NGX_ERROR;
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51 }
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52
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53 #if 0
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54 if (dup2(fd, STDERR_FILENO) == -1) {
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55 ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "dup2(STDERR) failed");
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56 return NGX_ERROR;
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57 }
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58 #endif
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59
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60 if (fd > STDERR_FILENO) {
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61 if (close(fd) == -1) {
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62 ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "close() failed");
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63 return NGX_ERROR;
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64 }
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65 }
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66
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67 return NGX_OK;
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68 }