release/src/router/nginx/src/os/unix/ngx_linux_init.c

   1
   2 /*
   3  * Copyright (C) Igor Sysoev
   4  * Copyright (C) Nginx, Inc.
   5  */
   6
   7
   8 #include <ngx_config.h>
   9 #include <ngx_core.h>
  10
  11
  12 u_char  ngx_linux_kern_ostype[50];
  13 u_char  ngx_linux_kern_osrelease[50];
  14
  15 int     ngx_linux_rtsig_max;
  16
  17
  18 static ngx_os_io_t ngx_linux_io = {
  19     ngx_unix_recv,
  20     ngx_readv_chain,
  21     ngx_udp_unix_recv,
  22     ngx_unix_send,
  23 #if (NGX_HAVE_SENDFILE)
  24     ngx_linux_sendfile_chain,
  25     NGX_IO_SENDFILE
  26 #else
  27     ngx_writev_chain,
  28     0
  29 #endif
  30 };
  31
  32
  33 ngx_int_t
  34 ngx_os_specific_init(ngx_log_t *log)
  35 {
  36     struct utsname  u;
  37
  38     if (uname(&u) == -1) {
  39         ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, "uname() failed");
  40         return NGX_ERROR;
  41     }
  42
  43     (void) ngx_cpystrn(ngx_linux_kern_ostype, (u_char *) u.sysname,
  44                        sizeof(ngx_linux_kern_ostype));
  45
  46     (void) ngx_cpystrn(ngx_linux_kern_osrelease, (u_char *) u.release,
  47                        sizeof(ngx_linux_kern_osrelease));
  48
  49 #if (NGX_HAVE_RTSIG)
  50     {
  51     int        name[2];
  52     size_t     len;
  53     ngx_err_t  err;
  54
  55     name[0] = CTL_KERN;
  56     name[1] = KERN_RTSIGMAX;
  57     len = sizeof(ngx_linux_rtsig_max);
  58
  59     if (sysctl(name, 2, &ngx_linux_rtsig_max, &len, NULL, 0) == -1) {
  60         err = ngx_errno;
  61
  62         if (err != NGX_ENOTDIR && err != NGX_ENOSYS) {
  63             ngx_log_error(NGX_LOG_ALERT, log, err,
  64                           "sysctl(KERN_RTSIGMAX) failed");
  65
  66             return NGX_ERROR;
  67         }
  68
  69         ngx_linux_rtsig_max = 0;
  70     }
  71
  72     }
  73 #endif
  74
  75     ngx_os_io = ngx_linux_io;
  76
  77     return NGX_OK;
  78 }
  79
  80
  81 void
  82 ngx_os_specific_status(ngx_log_t *log)
  83 {
  84     ngx_log_error(NGX_LOG_NOTICE, log, 0, "OS: %s %s",
  85                   ngx_linux_kern_ostype, ngx_linux_kern_osrelease);
  86
  87 #if (NGX_HAVE_RTSIG)
  88     ngx_log_error(NGX_LOG_NOTICE, log, 0, "sysctl(KERN_RTSIGMAX): %d",
  89                   ngx_linux_rtsig_max);
  90 #endif
  91 }