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0
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9
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10
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222
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11 static ngx_int_t ngx_linux_procfs(char *name, char *buf, size_t len,
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12 ngx_log_t *log);
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13
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0
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14
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222
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15 char ngx_linux_kern_ostype[50];
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272
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16 char ngx_linux_kern_osrelease[50];
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222
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17
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18 int ngx_linux_rtsig_max;
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0
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19
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20
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88
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21 static ngx_os_io_t ngx_linux_io = {
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0
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22 ngx_unix_recv,
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23 ngx_readv_chain,
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24 ngx_unix_send,
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18
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25 #if (NGX_HAVE_SENDFILE)
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0
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26 ngx_linux_sendfile_chain,
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27 NGX_IO_SENDFILE
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28 #else
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29 ngx_writev_chain,
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30 0
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31 #endif
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32 };
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33
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34
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42
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35 ngx_int_t
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88
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36 ngx_os_specific_init(ngx_log_t *log)
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0
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37 {
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16
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38 int name[2];
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39 size_t len;
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40 ngx_err_t err;
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0
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41
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222
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42 if (ngx_linux_procfs("/proc/sys/kernel/ostype",
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43 ngx_linux_kern_ostype,
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44 sizeof(ngx_linux_kern_ostype), log)
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45 == -1)
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46 {
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0
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47 return NGX_ERROR;
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48 }
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49
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222
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50 if (ngx_linux_procfs("/proc/sys/kernel/osrelease",
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51 ngx_linux_kern_osrelease,
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52 sizeof(ngx_linux_kern_osrelease), log)
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53 == -1)
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54 {
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0
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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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222
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59 name[0] = CTL_KERN;
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0
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60 name[1] = KERN_RTSIGMAX;
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61 len = sizeof(ngx_linux_rtsig_max);
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42
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62
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63 if (sysctl(name, 2, &ngx_linux_rtsig_max, &len, NULL, 0) == -1) {
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16
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64 err = ngx_errno;
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65
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222
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66 if (err != NGX_ENOTDIR && err != NGX_ENOSYS) {
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16
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67 ngx_log_error(NGX_LOG_ALERT, log, err,
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68 "sysctl(KERN_RTSIGMAX) failed");
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69
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70 return NGX_ERROR;
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71 }
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72
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0
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73 ngx_linux_rtsig_max = 0;
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74 }
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75
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76
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88
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77 ngx_os_io = ngx_linux_io;
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78
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79 return NGX_OK;
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0
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80 }
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81
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82
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42
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83 void
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88
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84 ngx_os_specific_status(ngx_log_t *log)
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0
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85 {
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80
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86 ngx_log_error(NGX_LOG_NOTICE, log, 0, "OS: %s %s",
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0
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87 ngx_linux_kern_ostype, ngx_linux_kern_osrelease);
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88
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80
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89 ngx_log_error(NGX_LOG_NOTICE, log, 0, "sysctl(KERN_RTSIGMAX): %d",
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0
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90 ngx_linux_rtsig_max);
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91 }
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222
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92
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93
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94 static ngx_int_t
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95 ngx_linux_procfs(char *name, char *buf, size_t len, ngx_log_t *log)
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96 {
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97 int n;
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98 ngx_fd_t fd;
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99
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100 fd = open(name, O_RDONLY);
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101
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102 if (fd == NGX_INVALID_FILE) {
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103 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
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104 "open(\"%s\") failed", name);
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105
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106 return NGX_ERROR;
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107 }
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108
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109 n = read(fd, buf, len);
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110
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111 if (n == -1) {
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112 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
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113 "read(\"%s\") failed", name);
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114
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115 } else {
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116 if (buf[n - 1] == '\n') {
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117 buf[--n] = '\0';
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118 }
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119 }
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120
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121 ngx_close_file(fd);
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122
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123 return n;
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124 }
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