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annotate src/os/unix/ngx_daemon.c @ 249:2a0540287298

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nginx-0.0.2-2004-02-03-19:43:54 import
author Igor Sysoev <igor@sysoev.ru>
date Tue, 03 Feb 2004 16:43:54 +0000
parents 71ce40b3c37b
children da8c5707af39
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3973260705cc nginx-0.0.1-2003-05-12-19:52:24 import
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1
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2 #include <ngx_config.h>
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3 #include <ngx_core.h>
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6 int ngx_daemon(ngx_log_t *log)
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7 {
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8 int fd;
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9
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10 switch (fork()) {
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11 case -1:
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12 ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "fork() failed");
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13 return NGX_ERROR;
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14
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15 case 0:
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16 break;
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17
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18 default:
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19 exit(0);
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20 }
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2a0540287298 nginx-0.0.2-2004-02-03-19:43:54 import
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22 ngx_pid = ngx_getpid();
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23
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24 if (setsid() == -1) {
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25 ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "setsid() failed");
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26 return NGX_ERROR;
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27 }
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28
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29 umask(0);
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30
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31 fd = open("/dev/null", O_RDWR);
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32 if (fd == -1) {
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33 ngx_log_error(NGX_LOG_EMERG, log, ngx_errno,
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34 "open(\"/dev/null\") failed");
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35 return NGX_ERROR;
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36 }
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37
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38 if (dup2(fd, STDIN_FILENO) == -1) {
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39 ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "dup2(STDIN) 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, STDOUT_FILENO) == -1) {
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44 ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "dup2(STDOUT) 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 0
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49 if (dup2(fd, STDERR_FILENO) == -1) {
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50 ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "dup2(STDERR) failed");
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51 return NGX_ERROR;
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52 }
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53 #endif
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54
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55 if (fd > STDERR_FILENO) {
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56 if (close(fd) == -1) {
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57 ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "close() failed");
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58 return NGX_ERROR;
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59 }
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60 }
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61
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62 return NGX_OK;
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63 }