Mercurial > hg > nginx-quic
annotate src/os/unix/ngx_daemon.c @ 7174:84e53e4735a4
Retain CAP_NET_RAW capability for transparent proxying.
The capability is retained automatically in unprivileged worker processes after
changing UID if transparent proxying is enabled at least once in nginx
configuration.
The feature is only available in Linux.
author | Roman Arutyunyan <arut@nginx.com> |
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date | Wed, 13 Dec 2017 20:40:53 +0300 |
parents | 8b84d60ef13d |
children |
rev | line source |
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441
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
4412 | 4 * Copyright (C) Nginx, Inc. |
441
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5 */ |
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6 |
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7 |
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8 #include <ngx_config.h> |
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9 #include <ngx_core.h> |
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10 |
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11 |
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Style: the function type should be on a line by itself
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12 ngx_int_t |
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13 ngx_daemon(ngx_log_t *log) |
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14 { |
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15 int fd; |
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16 |
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17 switch (fork()) { |
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18 case -1: |
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19 ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "fork() failed"); |
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20 return NGX_ERROR; |
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21 |
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22 case 0: |
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23 break; |
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24 |
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25 default: |
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26 exit(0); |
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27 } |
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28 |
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Fixed "changing binary" when reaper is not init.
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29 ngx_parent = ngx_pid; |
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30 ngx_pid = ngx_getpid(); |
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31 |
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32 if (setsid() == -1) { |
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33 ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "setsid() failed"); |
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34 return NGX_ERROR; |
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35 } |
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36 |
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37 umask(0); |
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38 |
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39 fd = open("/dev/null", O_RDWR); |
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40 if (fd == -1) { |
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41 ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, |
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42 "open(\"/dev/null\") failed"); |
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43 return NGX_ERROR; |
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44 } |
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45 |
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46 if (dup2(fd, STDIN_FILENO) == -1) { |
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47 ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "dup2(STDIN) failed"); |
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48 return NGX_ERROR; |
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49 } |
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50 |
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51 if (dup2(fd, STDOUT_FILENO) == -1) { |
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52 ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "dup2(STDOUT) failed"); |
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53 return NGX_ERROR; |
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54 } |
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55 |
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56 #if 0 |
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57 if (dup2(fd, STDERR_FILENO) == -1) { |
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58 ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "dup2(STDERR) failed"); |
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59 return NGX_ERROR; |
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60 } |
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61 #endif |
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62 |
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63 if (fd > STDERR_FILENO) { |
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64 if (close(fd) == -1) { |
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65 ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "close() failed"); |
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66 return NGX_ERROR; |
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67 } |
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68 } |
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69 |
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70 return NGX_OK; |
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71 } |