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annotate src/os/unix/ngx_daemon.c @ 626:a7a5fa2e395b NGINX_1_0_3

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nginx 1.0.3 *) Feature: the "auth_basic_user_file" directive supports "$apr1", "{PLAIN}", and "{SSHA}" password encryption methods. Thanks to Maxim Dounin. *) Feature: the "geoip_org" directive and $geoip_org variable. Thanks to Alexander Uskov, Arnaud Granal, and Denis F. Latypoff. *) Feature: ngx_http_geo_module and ngx_http_geoip_module support IPv4 addresses mapped to IPv6 addresses. *) Bugfix: a segmentation fault occurred in a worker process during testing IPv4 address mapped to IPv6 address, if access or deny rules were defined only for IPv6; the bug had appeared in 0.8.22. *) Bugfix: a cached reponse may be broken if proxy/fastcgi/scgi/ uwsgi_cache_bypass and proxy/fastcgi/scgi/uwsgi_no_cache directive values were different; the bug had appeared in 0.8.46.
author Igor Sysoev <http://sysoev.ru>
date Wed, 25 May 2011 00:00:00 +0400
parents 6cfc63e68377
children d0f7a625f27c
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1
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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)
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12 {
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13 int fd;
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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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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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67 return NGX_OK;
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68 }