src/os/unix/ngx_linux_init.c

   1
   2 /*
   3  * Copyright (C) Igor Sysoev
   4  */
   5
   6
   7 #include <ngx_config.h>
   8 #include <ngx_core.h>
   9
  10
  11 char ngx_linux_kern_ostype[50];
  12 char ngx_linux_kern_osrelease[20];
  13
  14 int ngx_linux_rtsig_max;
  15
  16
  17 ngx_os_io_t ngx_os_io = {
  18     ngx_unix_recv,
  19     ngx_readv_chain,
  20     ngx_unix_send,
  21 #if (HAVE_SENDFILE)
  22     ngx_linux_sendfile_chain,
  23     NGX_IO_SENDFILE
  24 #else
  25     ngx_writev_chain,
  26     0
  27 #endif
  28 };
  29
  30
  31 ngx_int_t ngx_os_init(ngx_log_t *log)
  32 {
  33     int     name[2];
  34     size_t  len;
  35
  36     name[0] = CTL_KERN;
  37     name[1] = KERN_OSTYPE;
  38     len = sizeof(ngx_linux_kern_ostype);
  39     if (sysctl(name, sizeof(name), ngx_linux_kern_ostype, &len, NULL, 0)
  40                                                                        == -1) {
  41         ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
  42                       "sysctl(KERN_OSTYPE) failed");
  43         return NGX_ERROR;
  44     }
  45
  46     name[0] = CTL_KERN;
  47     name[1] = KERN_OSRELEASE;
  48     len = sizeof(ngx_linux_kern_osrelease);
  49     if (sysctl(name, sizeof(name), ngx_linux_kern_osrelease, &len, NULL, 0)
  50                                                                        == -1) {
  51         ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
  52                       "sysctl(KERN_OSRELEASE) failed");
  53         return NGX_ERROR;
  54     }
  55
  56
  57     name[0] = CTL_KERN;
  58     name[1] = KERN_RTSIGMAX;
  59     len = sizeof(ngx_linux_rtsig_max);
  60     if (sysctl(name, sizeof(name), &ngx_linux_rtsig_max, &len, NULL, 0) == -1) {
  61         ngx_log_error(NGX_LOG_INFO, log, ngx_errno,
  62                       "sysctl(KERN_RTSIGMAX) failed");
  63         ngx_linux_rtsig_max = 0;
  64
  65     }
  66
  67     ngx_init_setproctitle(log);
  68
  69
  70     return ngx_posix_init(log);
  71 }
  72
  73
  74 void ngx_os_status(ngx_log_t *log)
  75 {
  76     ngx_log_error(NGX_LOG_INFO, log, 0, "OS: %s %s",
  77                   ngx_linux_kern_ostype, ngx_linux_kern_osrelease);
  78
  79     ngx_log_error(NGX_LOG_INFO, log, 0, "sysctl(KERN_RTSIGMAX): %d",
  80                   ngx_linux_rtsig_max);
  81
  82
  83     ngx_posix_status(log);
  84 }