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annotate src/os/unix/ngx_daemon.c @ 163:fb61ba77beba

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nginx-0.0.1-2003-10-28-18:45:41 import
author Igor Sysoev <igor@sysoev.ru>
date Tue, 28 Oct 2003 15:45:41 +0000
parents 00bee6e7b485
children 71ce40b3c37b
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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, 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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21
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22 if (setsid() == -1) {
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23 ngx_log_error(NGX_LOG_EMERG, log, errno, "setsid() failed");
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24 return NGX_ERROR;
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25 }
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27 umask(0);
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28
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29 fd = open("/dev/null", O_RDWR);
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30 if (fd == -1) {
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31 ngx_log_error(NGX_LOG_EMERG, log, errno, "open(\"/dev/null\") failed");
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32 return NGX_ERROR;
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33 }
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34
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35 if (dup2(fd, STDIN_FILENO) == -1) {
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36 ngx_log_error(NGX_LOG_EMERG, log, errno, "dup2(STDIN) failed");
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37 return NGX_ERROR;
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38 }
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39
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40 if (dup2(fd, STDOUT_FILENO) == -1) {
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41 ngx_log_error(NGX_LOG_EMERG, log, errno, "dup2(STDOUT) failed");
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42 return NGX_ERROR;
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43 }
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44
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45 #if 0
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46 if (dup2(fd, STDERR_FILENO) == -1) {
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47 ngx_log_error(NGX_LOG_EMERG, log, errno, "dup2(STDERR) failed");
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48 return NGX_ERROR;
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49 }
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50 #endif
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51
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52 if (fd > STDERR_FILENO) {
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53 if (close(fd) == -1) {
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54 ngx_log_error(NGX_LOG_EMERG, log, errno, "close() failed");
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55 return NGX_ERROR;
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56 }
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57 }
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58
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59 return NGX_OK;
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60 }