Mercurial > hg > nginx
annotate src/os/unix/ngx_files.h @ 4283:f72496073689
Introduction of simple ngx_write_stderr() instead of ngx_log_stderr()
for output of ./configure options, etc., since ngx_log_stderr() output
length is limited by 2048 characters defined as NGX_MAX_ERROR_STR.
author | Igor Sysoev <igor@sysoev.ru> |
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date | Mon, 14 Nov 2011 14:59:00 +0000 |
parents | 2d05952a324d |
children | d620f497c50f |
rev | line source |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
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4 */ |
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7 #ifndef _NGX_FILES_H_INCLUDED_ |
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8 #define _NGX_FILES_H_INCLUDED_ |
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11 #include <ngx_config.h> |
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12 #include <ngx_core.h> |
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14 |
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15 typedef int ngx_fd_t; |
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16 typedef struct stat ngx_file_info_t; |
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17 typedef ino_t ngx_file_uniq_t; |
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18 |
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19 |
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20 typedef struct { |
3651 | 21 u_char *name; |
22 size_t size; | |
23 void *addr; | |
24 ngx_fd_t fd; | |
25 ngx_log_t *log; | |
26 } ngx_file_mapping_t; | |
27 | |
28 | |
29 typedef struct { | |
2933 | 30 DIR *dir; |
31 struct dirent *de; | |
32 struct stat info; | |
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33 |
2933 | 34 unsigned type:8; |
35 unsigned valid_info:1; | |
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36 } ngx_dir_t; |
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37 |
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38 |
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39 typedef struct { |
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40 size_t n; |
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41 glob_t pglob; |
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42 u_char *pattern; |
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43 ngx_log_t *log; |
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44 ngx_uint_t test; |
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45 } ngx_glob_t; |
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46 |
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47 |
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48 #define NGX_INVALID_FILE -1 |
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49 #define NGX_FILE_ERROR -1 |
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52 |
1975 | 53 #ifdef __CYGWIN__ |
54 | |
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55 #define NGX_HAVE_CASELESS_FILESYSTEM 1 |
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56 |
1975 | 57 #define ngx_open_file(name, mode, create, access) \ |
58 open((const char *) name, mode|create|O_BINARY, access) | |
59 | |
60 #else | |
61 | |
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62 #define ngx_open_file(name, mode, create, access) \ |
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63 open((const char *) name, mode|create, access) |
1975 | 64 |
65 #endif | |
66 | |
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67 #define ngx_open_file_n "open()" |
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68 |
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69 #define NGX_FILE_RDONLY O_RDONLY |
1054 | 70 #define NGX_FILE_WRONLY O_WRONLY |
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71 #define NGX_FILE_RDWR O_RDWR |
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72 #define NGX_FILE_CREATE_OR_OPEN O_CREAT |
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73 #define NGX_FILE_OPEN 0 |
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74 #define NGX_FILE_TRUNCATE O_CREAT|O_TRUNC |
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75 #define NGX_FILE_APPEND O_WRONLY|O_APPEND |
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76 #define NGX_FILE_NONBLOCK O_NONBLOCK |
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77 |
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78 #define NGX_FILE_DEFAULT_ACCESS 0644 |
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79 #define NGX_FILE_OWNER_ACCESS 0600 |
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81 |
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82 #define ngx_close_file close |
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83 #define ngx_close_file_n "close()" |
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84 |
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85 |
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86 #define ngx_delete_file(name) unlink((const char *) name) |
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87 #define ngx_delete_file_n "unlink()" |
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88 |
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89 |
633 | 90 ngx_fd_t ngx_open_tempfile(u_char *name, ngx_uint_t persistent, |
1046 | 91 ngx_uint_t access); |
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92 #define ngx_open_tempfile_n "open()" |
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93 |
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95 ssize_t ngx_read_file(ngx_file_t *file, u_char *buf, size_t size, off_t offset); |
2180 | 96 #if (NGX_HAVE_PREAD) |
97 #define ngx_read_file_n "pread()" | |
98 #else | |
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99 #define ngx_read_file_n "read()" |
2180 | 100 #endif |
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102 ssize_t ngx_write_file(ngx_file_t *file, u_char *buf, size_t size, |
497 | 103 off_t offset); |
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104 |
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105 ssize_t ngx_write_chain_to_file(ngx_file_t *file, ngx_chain_t *ce, |
497 | 106 off_t offset, ngx_pool_t *pool); |
74
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107 |
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108 |
1055 | 109 #define ngx_read_fd read |
110 #define ngx_read_fd_n "read()" | |
111 | |
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112 /* |
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113 * we use inlined function instead of simple #define |
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114 * because glibc 2.3 sets warn_unused_result attribute for write() |
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115 * and in this case gcc 4.3 ignores (void) cast |
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116 */ |
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117 static ngx_inline ssize_t |
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118 ngx_write_fd(ngx_fd_t fd, void *buf, size_t n) |
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119 { |
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120 return write(fd, buf, n); |
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121 } |
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122 |
1055 | 123 #define ngx_write_fd_n "write()" |
124 | |
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125 |
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126 #define ngx_write_console ngx_write_fd |
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127 |
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128 |
571 | 129 #define ngx_linefeed(p) *p++ = LF; |
130 #define NGX_LINEFEED_SIZE 1 | |
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131 #define NGX_LINEFEED "\x0a" |
571 | 132 |
133 | |
633 | 134 #define ngx_rename_file(o, n) rename((const char *) o, (const char *) n) |
681 | 135 #define ngx_rename_file_n "rename()" |
170
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136 |
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137 |
669 | 138 #define ngx_change_file_access(n, a) chmod((const char *) n, a) |
681 | 139 #define ngx_change_file_access_n "chmod()" |
140 | |
141 | |
142 ngx_int_t ngx_set_file_time(u_char *name, ngx_fd_t fd, time_t s); | |
143 #define ngx_set_file_time_n "utimes()" | |
669 | 144 |
145 | |
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146 #define ngx_file_info(file, sb) stat((const char *) file, sb) |
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147 #define ngx_file_info_n "stat()" |
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148 |
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149 #define ngx_fd_info(fd, sb) fstat(fd, sb) |
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150 #define ngx_fd_info_n "fstat()" |
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151 |
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152 #define ngx_link_info(file, sb) lstat((const char *) file, sb) |
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153 #define ngx_link_info_n "lstat()" |
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154 |
186
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155 #define ngx_is_dir(sb) (S_ISDIR((sb)->st_mode)) |
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156 #define ngx_is_file(sb) (S_ISREG((sb)->st_mode)) |
669 | 157 #define ngx_is_link(sb) (S_ISLNK((sb)->st_mode)) |
3281 | 158 #define ngx_is_exec(sb) (((sb)->st_mode & S_IXUSR) == S_IXUSR) |
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159 #define ngx_file_access(sb) ((sb)->st_mode & 0777) |
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160 #define ngx_file_size(sb) (sb)->st_size |
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161 #define ngx_file_fs_size(sb) ((sb)->st_blocks * 512) |
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162 #define ngx_file_mtime(sb) (sb)->st_mtime |
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163 #define ngx_file_uniq(sb) (sb)->st_ino |
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164 |
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165 |
3651 | 166 ngx_int_t ngx_create_file_mapping(ngx_file_mapping_t *fm); |
167 void ngx_close_file_mapping(ngx_file_mapping_t *fm); | |
168 | |
169 | |
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170 #if (NGX_HAVE_CASELESS_FILESYSTEM) |
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171 |
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172 #define ngx_filename_cmp(s1, s2, n) strncasecmp((char *) s1, (char *) s2, n) |
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173 |
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174 #else |
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175 |
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176 #define ngx_filename_cmp ngx_memcmp |
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177 |
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178 #endif |
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179 |
336
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180 |
2259 | 181 #define ngx_realpath(p, r) realpath((char *) p, (char *) r) |
182 #define ngx_realpath_n "realpath()" | |
2758 | 183 #define ngx_getcwd(buf, size) (getcwd((char *) buf, size) != NULL) |
336
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184 #define ngx_getcwd_n "getcwd()" |
2744 | 185 #define ngx_path_separator(c) ((c) == '/') |
186 | |
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187 #define NGX_MAX_PATH PATH_MAX |
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188 |
186
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189 #define NGX_DIR_MASK_LEN 0 |
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190 |
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191 |
467 | 192 ngx_int_t ngx_open_dir(ngx_str_t *name, ngx_dir_t *dir); |
185
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193 #define ngx_open_dir_n "opendir()" |
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194 |
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195 |
186
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196 #define ngx_close_dir(d) closedir((d)->dir) |
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197 #define ngx_close_dir_n "closedir()" |
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198 |
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199 |
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200 ngx_int_t ngx_read_dir(ngx_dir_t *dir); |
185
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201 #define ngx_read_dir_n "readdir()" |
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202 |
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203 |
669 | 204 #define ngx_create_dir(name, access) mkdir((const char *) name, access) |
186
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205 #define ngx_create_dir_n "mkdir()" |
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206 |
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207 |
290
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208 #define ngx_delete_dir(name) rmdir((const char *) name) |
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209 #define ngx_delete_dir_n "rmdir()" |
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210 |
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211 |
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212 #define ngx_dir_access(a) (a | (a & 0444) >> 2) |
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213 |
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214 |
457 | 215 #define ngx_de_name(dir) ((u_char *) (dir)->de->d_name) |
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216 #if (NGX_HAVE_D_NAMLEN) |
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217 #define ngx_de_namelen(dir) (dir)->de->d_namlen |
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218 #else |
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219 #define ngx_de_namelen(dir) ngx_strlen((dir)->de->d_name) |
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220 #endif |
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221 |
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222 static ngx_inline ngx_int_t |
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223 ngx_de_info(u_char *name, ngx_dir_t *dir) |
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224 { |
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225 dir->type = 0; |
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226 return stat((const char *) name, &dir->info); |
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227 } |
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228 |
186
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229 #define ngx_de_info_n "stat()" |
497 | 230 #define ngx_de_link_info(name, dir) lstat((const char *) name, &(dir)->info) |
231 #define ngx_de_link_info_n "lstat()" | |
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232 |
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233 #if (NGX_HAVE_D_TYPE) |
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234 |
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235 /* |
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236 * some file systems (e.g. XFS on Linux and CD9660 on FreeBSD) |
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237 * do not set dirent.d_type |
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238 */ |
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239 |
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240 #define ngx_de_is_dir(dir) \ |
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241 (((dir)->type) ? ((dir)->type == DT_DIR) : (S_ISDIR((dir)->info.st_mode))) |
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242 #define ngx_de_is_file(dir) \ |
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243 (((dir)->type) ? ((dir)->type == DT_REG) : (S_ISREG((dir)->info.st_mode))) |
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244 #define ngx_de_is_link(dir) \ |
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245 (((dir)->type) ? ((dir)->type == DT_LNK) : (S_ISLNK((dir)->info.st_mode))) |
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246 |
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247 #else |
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248 |
186
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249 #define ngx_de_is_dir(dir) (S_ISDIR((dir)->info.st_mode)) |
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250 #define ngx_de_is_file(dir) (S_ISREG((dir)->info.st_mode)) |
497 | 251 #define ngx_de_is_link(dir) (S_ISLNK((dir)->info.st_mode)) |
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252 |
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253 #endif |
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254 |
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255 #define ngx_de_access(dir) (((dir)->info.st_mode) & 0777) |
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256 #define ngx_de_size(dir) (dir)->info.st_size |
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257 #define ngx_de_fs_size(dir) ((dir)->info.st_blocks * 512) |
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258 #define ngx_de_mtime(dir) (dir)->info.st_mtime |
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259 |
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260 |
727 | 261 ngx_int_t ngx_open_glob(ngx_glob_t *gl); |
262 #define ngx_open_glob_n "glob()" | |
263 ngx_int_t ngx_read_glob(ngx_glob_t *gl, ngx_str_t *name); | |
264 void ngx_close_glob(ngx_glob_t *gl); | |
265 | |
266 | |
611 | 267 ngx_err_t ngx_trylock_fd(ngx_fd_t fd); |
268 ngx_err_t ngx_lock_fd(ngx_fd_t fd); | |
269 ngx_err_t ngx_unlock_fd(ngx_fd_t fd); | |
270 | |
271 #define ngx_trylock_fd_n "fcntl(F_SETLK, F_WRLCK)" | |
272 #define ngx_lock_fd_n "fcntl(F_SETLKW, F_WRLCK)" | |
273 #define ngx_unlock_fd_n "fcntl(F_SETLK, F_UNLCK)" | |
274 | |
275 | |
3178 | 276 #if (NGX_HAVE_F_READAHEAD) |
277 | |
278 #define NGX_HAVE_READ_AHEAD 1 | |
279 | |
280 #define ngx_read_ahead(fd, n) fcntl(fd, F_READAHEAD, (int) n) | |
281 #define ngx_read_ahead_n "fcntl(fd, F_READAHEAD)" | |
282 | |
283 #elif (NGX_HAVE_POSIX_FADVISE) | |
284 | |
285 #define NGX_HAVE_READ_AHEAD 1 | |
286 | |
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287 ngx_int_t ngx_read_ahead(ngx_fd_t fd, size_t n); |
3178 | 288 #define ngx_read_ahead_n "posix_fadvise(POSIX_FADV_SEQUENTIAL)" |
289 | |
290 #else | |
291 | |
292 #define ngx_read_ahead(fd, n) 0 | |
293 #define ngx_read_ahead_n "ngx_read_ahead_n" | |
294 | |
295 #endif | |
296 | |
297 | |
2129 | 298 #if (NGX_HAVE_O_DIRECT) |
299 | |
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300 ngx_int_t ngx_directio_on(ngx_fd_t fd); |
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301 #define ngx_directio_on_n "fcntl(O_DIRECT)" |
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302 |
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303 ngx_int_t ngx_directio_off(ngx_fd_t fd); |
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304 #define ngx_directio_off_n "fcntl(!O_DIRECT)" |
2129 | 305 |
306 #elif (NGX_HAVE_F_NOCACHE) | |
307 | |
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308 #define ngx_directio_on(fd) fcntl(fd, F_NOCACHE, 1) |
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309 #define ngx_directio_on_n "fcntl(F_NOCACHE, 1)" |
2129 | 310 |
2143 | 311 #elif (NGX_HAVE_DIRECTIO) |
312 | |
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313 #define ngx_directio_on(fd) directio(fd, DIRECTIO_ON) |
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314 #define ngx_directio_on_n "directio(DIRECTIO_ON)" |
2143 | 315 |
2129 | 316 #else |
317 | |
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318 #define ngx_directio_on(fd) 0 |
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319 #define ngx_directio_on_n "ngx_directio_on_n" |
2129 | 320 |
321 #endif | |
322 | |
2615 | 323 size_t ngx_fs_bsize(u_char *name); |
324 | |
325 | |
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326 #define ngx_stderr STDERR_FILENO |
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327 #define ngx_set_stderr(fd) dup2(fd, STDERR_FILENO) |
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328 #define ngx_set_stderr_n "dup2(STDERR_FILENO)" |
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329 |
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330 |
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331 #if (NGX_HAVE_FILE_AIO) |
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332 |
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333 ssize_t ngx_file_aio_read(ngx_file_t *file, u_char *buf, size_t size, |
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334 off_t offset, ngx_pool_t *pool); |
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335 |
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336 extern ngx_uint_t ngx_file_aio; |
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337 |
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338 #endif |
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339 |
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340 |
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341 #endif /* _NGX_FILES_H_INCLUDED_ */ |