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annotate src/os/unix/ngx_daemon.c @ 4:4b2dafa26fe2 NGINX_0_1_2

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nginx 0.1.2 *) Feature: the --user=USER, --group=GROUP, and --with-ld-opt=OPTIONS options in configure. *) Feature: the server_name directive supports *.domain.tld. *) Bugfix: the portability improvements. *) Bugfix: if configuration file was set in command line, the reconfiguration was impossible; bug appeared in 0.1.1. *) Bugfix: proxy module may get caught in an endless loop when sendfile is not used. *) Bugfix: with sendfile the response was not recoded according to the charset module directives; bug appeared in 0.1.1. *) Bugfix: very seldom bug in the kqueue processing. *) Bugfix: the gzip module compressed the proxied responses that was already compressed.
author Igor Sysoev <http://sysoev.ru>
date Thu, 21 Oct 2004 00:00:00 +0400
parents f0b350454894
children 6cfc63e68377
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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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9
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11 int ngx_daemon(ngx_log_t *log)
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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 }