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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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44
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11 static ngx_atomic_uint_t ngx_temp_number;
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12 static ngx_atomic_uint_t ngx_random;
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0
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13
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14
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42
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15 ssize_t
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16 ngx_write_chain_to_temp_file(ngx_temp_file_t *tf, ngx_chain_t *chain)
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0
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17 {
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16
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18 ngx_int_t rc;
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0
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19
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20 if (tf->file.fd == NGX_INVALID_FILE) {
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21 rc = ngx_create_temp_file(&tf->file, tf->path, tf->pool,
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22 tf->persistent);
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23
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24 if (rc == NGX_ERROR || rc == NGX_AGAIN) {
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25 return rc;
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26 }
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27
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28 if (!tf->persistent && tf->warn) {
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29 ngx_log_error(NGX_LOG_WARN, tf->file.log, 0, tf->warn);
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30 }
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31 }
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32
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33 return ngx_write_chain_to_file(&tf->file, chain, tf->offset, tf->pool);
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34 }
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35
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36
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42
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37 ngx_int_t
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38 ngx_create_temp_file(ngx_file_t *file, ngx_path_t *path, ngx_pool_t *pool,
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110
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39 ngx_uint_t persistent)
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0
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40 {
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58
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41 ngx_err_t err;
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42 ngx_atomic_uint_t n;
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112
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43 ngx_pool_cleanup_t *cln;
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44 ngx_pool_cleanup_file_t *clnf;
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0
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45
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42
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46 file->name.len = path->name.len + 1 + path->len + NGX_ATOMIC_T_LEN;
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0
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47
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50
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48 file->name.data = ngx_palloc(pool, file->name.len + 1);
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49 if (file->name.data == NULL) {
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16
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50 return NGX_ERROR;
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51 }
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0
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52
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53 #if 0
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54 for (i = 0; i < file->name.len; i++) {
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55 file->name.data[i] = 'X';
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56 }
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57 #endif
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58
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59 ngx_memcpy(file->name.data, path->name.data, path->name.len);
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60
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42
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61 n = ngx_next_temp_number(0);
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0
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62
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63 for ( ;; ) {
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66
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64 (void) ngx_sprintf(file->name.data + path->name.len + 1 + path->len,
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65 "%0muA%Z", n);
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0
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66
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67 ngx_create_hashed_filename(file, path);
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68
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112
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69 cln = ngx_pool_cleanup_add(pool, sizeof(ngx_pool_cleanup_file_t));
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70 if (cln == NULL) {
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71 return NGX_ERROR;
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72 }
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73
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0
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74 #if 1
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75 file->fd = ngx_open_tempfile(file->name.data, persistent);
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76 #else
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77 file->fd = ngx_open_tempfile(file->name.data, 1);
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78 #endif
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79
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80 ngx_log_debug1(NGX_LOG_DEBUG_CORE, file->log, 0,
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81 "temp fd:%d", file->fd);
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82
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83 if (file->fd != NGX_INVALID_FILE) {
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112
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84
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85 cln->handler = ngx_pool_cleanup_file;
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86 clnf = cln->data;
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58
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87
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112
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88 clnf->fd = file->fd;
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89 clnf->name = file->name.data;
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90 clnf->log = pool->log;
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58
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91
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0
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92 return NGX_OK;
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93 }
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94
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95 err = ngx_errno;
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96
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97 if (err == NGX_EEXIST) {
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42
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98 n = ngx_next_temp_number(1);
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0
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99 continue;
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100 }
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101
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102 if ((path->level[0] == 0)
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103 || (err != NGX_ENOENT
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10
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104 #if (NGX_WIN32)
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0
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105 && err != NGX_ENOTDIR
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106 #endif
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16
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107 ))
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108 {
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0
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109 ngx_log_error(NGX_LOG_CRIT, file->log, err,
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110 ngx_open_tempfile_n " \"%s\" failed",
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111 file->name.data);
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112 return NGX_ERROR;
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113 }
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114
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115 if (ngx_create_path(file, path) == NGX_ERROR) {
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116 return NGX_ERROR;
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117 }
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118 }
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119 }
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120
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121
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42
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122 void
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123 ngx_create_hashed_filename(ngx_file_t *file, ngx_path_t *path)
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0
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124 {
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66
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125 size_t name, pos, level;
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126 ngx_uint_t i;
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0
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127
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128 name = file->name.len;
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129 pos = path->name.len + 1;
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130
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131 file->name.data[path->name.len + path->len] = '/';
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132
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133 for (i = 0; i < 3; i++) {
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134 level = path->level[i];
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135
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136 if (level == 0) {
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137 break;
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138 }
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139
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140 name -= level;
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141 file->name.data[pos - 1] = '/';
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142 ngx_memcpy(&file->name.data[pos], &file->name.data[name], level);
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143 pos += level + 1;
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144 }
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145
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146 ngx_log_debug1(NGX_LOG_DEBUG_CORE, file->log, 0,
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147 "hashed path: %s", file->name.data);
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148 }
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149
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150
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42
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151 ngx_int_t
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152 ngx_create_path(ngx_file_t *file, ngx_path_t *path)
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0
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153 {
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66
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154 size_t pos;
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155 ngx_err_t err;
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156 ngx_uint_t i;
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0
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157
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158 pos = path->name.len;
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159
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160 for (i = 0; i < 3; i++) {
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161 if (path->level[i] == 0) {
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162 break;
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163 }
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164
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165 pos += path->level[i] + 1;
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166
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167 file->name.data[pos] = '\0';
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168
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169 ngx_log_debug1(NGX_LOG_DEBUG_CORE, file->log, 0,
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170 "temp file: \"%s\"", file->name.data);
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171
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172 if (ngx_create_dir(file->name.data) == NGX_FILE_ERROR) {
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173 err = ngx_errno;
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174 if (err != NGX_EEXIST) {
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175 ngx_log_error(NGX_LOG_CRIT, file->log, err,
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176 ngx_create_dir_n " \"%s\" failed",
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177 file->name.data);
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178 return NGX_ERROR;
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179 }
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180 }
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181
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182 file->name.data[pos] = '/';
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183 }
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184
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185 return NGX_OK;
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186 }
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187
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188
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42
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189 void
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48
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190 ngx_init_temp_number(void)
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0
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191 {
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42
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192 ngx_temp_number = 0;
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193 ngx_random = 123456;
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0
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194 }
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195
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196
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44
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197 ngx_atomic_uint_t
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42
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198 ngx_next_temp_number(ngx_uint_t collision)
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0
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199 {
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200 if (collision) {
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201 ngx_temp_number += ngx_random;
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202 }
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203
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204 return ngx_temp_number++;
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205 }
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206
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207
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42
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208 char *
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209 ngx_conf_set_path_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
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0
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210 {
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211 char *p = conf;
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212
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16
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213 ssize_t level;
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178
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214 ngx_str_t *value;
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0
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215 ngx_uint_t i, n;
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28
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216 ngx_path_t *path, **slot;
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0
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217
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16
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218 slot = (ngx_path_t **) (p + cmd->offset);
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0
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219
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16
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220 if (*slot) {
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0
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221 return "is duplicate";
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222 }
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223
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50
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224 path = ngx_pcalloc(cf->pool, sizeof(ngx_path_t));
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225 if (path == NULL) {
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16
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226 return NGX_CONF_ERROR;
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227 }
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0
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228
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16
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229 value = cf->args->elts;
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0
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230
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231 path->name = value[1];
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178
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232
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233 if (ngx_conf_full_name(cf->cycle, &path->name) == NGX_ERROR) {
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234 return NULL;
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235 }
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236
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0
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237 path->len = 0;
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28
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238 path->cleaner = (ngx_gc_handler_pt) cmd->post;
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16
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239 path->conf_file = cf->conf_file->file.name.data;
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240 path->line = cf->conf_file->line;
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0
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241
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242 for (i = 0, n = 2; n < cf->args->nelts; i++, n++) {
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243 level = ngx_atoi(value[n].data, value[n].len);
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244 if (level == NGX_ERROR || level == 0) {
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245 return "invalid value";
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246 }
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247
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248 path->level[i] = level;
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249 path->len += level + 1;
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250 }
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251
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252 while (i < 3) {
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253 path->level[i++] = 0;
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254 }
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255
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28
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256 *slot = path;
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16
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257
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28
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258 if (ngx_add_path(cf, slot) == NGX_ERROR) {
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259 return NGX_CONF_ERROR;
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260 }
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261
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262 return NGX_CONF_OK;
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263 }
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264
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265
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42
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266 ngx_int_t
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267 ngx_add_path(ngx_conf_t *cf, ngx_path_t **slot)
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28
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268 {
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269 ngx_uint_t i, n;
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270 ngx_path_t *path, **p;
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271
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272 path = *slot;
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273
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274 p = cf->cycle->pathes.elts;
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16
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275 for (i = 0; i < cf->cycle->pathes.nelts; i++) {
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28
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276 if (p[i]->name.len == path->name.len
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277 && ngx_strcmp(p[i]->name.data, path->name.data) == 0)
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16
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278 {
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279 for (n = 0; n < 3; n++) {
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28
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280 if (p[i]->level[n] != path->level[n]) {
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281 if (path->conf_file == NULL) {
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30
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282 if (p[i]->conf_file == NULL) {
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283 ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
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284 "the default path name \"%V\" has "
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285 "the same name as another default path, "
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286 "but the different levels, you need to "
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287 "redefine one of them in http section",
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288 &p[i]->name);
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289 return NGX_ERROR;
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290 }
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291
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28
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292 ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
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293 "the path name \"%V\" in %s:%ui has "
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30
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294 "the same name as default path, but "
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28
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295 "the different levels, you need to "
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296 "define default path in http section",
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297 &p[i]->name, p[i]->conf_file, p[i]->line);
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298 return NGX_ERROR;
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299 }
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300
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16
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301 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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28
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302 "the same path name \"%V\" in %s:%ui "
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303 "has the different levels than",
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304 &p[i]->name, p[i]->conf_file, p[i]->line);
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305 return NGX_ERROR;
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16
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306 }
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307
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28
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308 if (p[i]->level[n] == 0) {
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16
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309 break;
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310 }
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311 }
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312
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28
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313 *slot = p[i];
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16
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314
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28
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315 return NGX_OK;
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16
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316 }
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317 }
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318
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50
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319 p = ngx_array_push(&cf->cycle->pathes);
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320 if (p == NULL) {
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28
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321 return NGX_ERROR;
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16
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322 }
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323
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28
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324 *p = path;
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0
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325
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28
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326 return NGX_OK;
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0
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327 }
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16
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328
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329
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42
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330 ngx_int_t
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331 ngx_create_pathes(ngx_cycle_t *cycle, ngx_uid_t user)
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16
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332 {
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333 ngx_err_t err;
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334 ngx_uint_t i;
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335 ngx_path_t **path;
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336 #if !(NGX_WIN32)
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337 ngx_file_info_t fi;
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338 #endif
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339
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340 path = cycle->pathes.elts;
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341 for (i = 0; i < cycle->pathes.nelts; i++) {
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342
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343 if (ngx_create_dir(path[i]->name.data) == NGX_FILE_ERROR) {
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344 err = ngx_errno;
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345 if (err != NGX_EEXIST) {
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346 ngx_log_error(NGX_LOG_EMERG, cycle->log, err,
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347 ngx_create_dir_n " \"%s\" failed",
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348 path[i]->name.data);
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349 return NGX_ERROR;
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350 }
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351 }
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352
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66
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353 if (user == (ngx_uid_t) NGX_CONF_UNSET_UINT) {
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16
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354 continue;
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355 }
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356
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357 #if !(NGX_WIN32)
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358
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359 if (ngx_file_info((const char *) path[i]->name.data, &fi) == -1) {
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360 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
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361 ngx_file_info_n " \"%s\" failed", path[i]->name.data);
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362 return NGX_ERROR;
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363 }
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364
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365 if (fi.st_uid != user) {
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366 if (chown((const char *) path[i]->name.data, user, -1) == -1) {
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367 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
|
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368 "chown(\"%s\", %d) failed",
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369 path[i]->name.data, user);
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370 return NGX_ERROR;
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371 }
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372 }
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373
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374 if ((fi.st_mode & (S_IRUSR|S_IWUSR|S_IXUSR))
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375 != (S_IRUSR|S_IWUSR|S_IXUSR))
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376 {
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377 fi.st_mode |= (S_IRUSR|S_IWUSR|S_IXUSR);
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378
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379 if (chmod((const char *) path[i]->name.data, fi.st_mode) == -1) {
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380 ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
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381 "chmod() \"%s\" failed", path[i]->name.data);
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382 return NGX_ERROR;
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383 }
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384 }
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385
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386 #endif
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387 }
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388
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389 return NGX_OK;
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390 }
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