Mercurial > hg > nginx
annotate src/os/unix/ngx_files.h @ 4475:0b05acc045eb
Added openat()/fstatat().
author | Andrey Belov <defan@nginx.com> |
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date | Mon, 13 Feb 2012 16:13:21 +0000 |
parents | d620f497c50f |
children | f7d131008e9c |
rev | line source |
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
4412 | 4 * Copyright (C) Nginx, Inc. |
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5 */ |
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8 #ifndef _NGX_FILES_H_INCLUDED_ |
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9 #define _NGX_FILES_H_INCLUDED_ |
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12 #include <ngx_config.h> |
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13 #include <ngx_core.h> |
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16 typedef int ngx_fd_t; |
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17 typedef struct stat ngx_file_info_t; |
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18 typedef ino_t ngx_file_uniq_t; |
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19 |
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21 typedef struct { |
3651 | 22 u_char *name; |
23 size_t size; | |
24 void *addr; | |
25 ngx_fd_t fd; | |
26 ngx_log_t *log; | |
27 } ngx_file_mapping_t; | |
28 | |
29 | |
30 typedef struct { | |
2933 | 31 DIR *dir; |
32 struct dirent *de; | |
33 struct stat info; | |
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34 |
2933 | 35 unsigned type:8; |
36 unsigned valid_info:1; | |
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37 } ngx_dir_t; |
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38 |
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39 |
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40 typedef struct { |
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41 size_t n; |
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42 glob_t pglob; |
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43 u_char *pattern; |
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44 ngx_log_t *log; |
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45 ngx_uint_t test; |
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46 } ngx_glob_t; |
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47 |
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48 |
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49 #define NGX_INVALID_FILE -1 |
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50 #define NGX_FILE_ERROR -1 |
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53 |
1975 | 54 #ifdef __CYGWIN__ |
55 | |
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56 #define NGX_HAVE_CASELESS_FILESYSTEM 1 |
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57 |
1975 | 58 #define ngx_open_file(name, mode, create, access) \ |
59 open((const char *) name, mode|create|O_BINARY, access) | |
60 | |
61 #else | |
62 | |
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63 #define ngx_open_file(name, mode, create, access) \ |
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64 open((const char *) name, mode|create, access) |
1975 | 65 |
66 #endif | |
67 | |
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68 #define ngx_open_file_n "open()" |
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69 |
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70 #define NGX_FILE_RDONLY O_RDONLY |
1054 | 71 #define NGX_FILE_WRONLY O_WRONLY |
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72 #define NGX_FILE_RDWR O_RDWR |
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73 #define NGX_FILE_CREATE_OR_OPEN O_CREAT |
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74 #define NGX_FILE_OPEN 0 |
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75 #define NGX_FILE_TRUNCATE O_CREAT|O_TRUNC |
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76 #define NGX_FILE_APPEND O_WRONLY|O_APPEND |
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77 #define NGX_FILE_NONBLOCK O_NONBLOCK |
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78 |
4475 | 79 #if (NGX_HAVE_OPENAT) |
80 #define NGX_FILE_NOFOLLOW O_NOFOLLOW | |
81 #endif | |
82 | |
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83 #define NGX_FILE_DEFAULT_ACCESS 0644 |
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84 #define NGX_FILE_OWNER_ACCESS 0600 |
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85 |
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86 |
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87 #define ngx_close_file close |
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88 #define ngx_close_file_n "close()" |
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89 |
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90 |
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91 #define ngx_delete_file(name) unlink((const char *) name) |
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92 #define ngx_delete_file_n "unlink()" |
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93 |
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94 |
633 | 95 ngx_fd_t ngx_open_tempfile(u_char *name, ngx_uint_t persistent, |
1046 | 96 ngx_uint_t access); |
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97 #define ngx_open_tempfile_n "open()" |
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98 |
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100 ssize_t ngx_read_file(ngx_file_t *file, u_char *buf, size_t size, off_t offset); |
2180 | 101 #if (NGX_HAVE_PREAD) |
102 #define ngx_read_file_n "pread()" | |
103 #else | |
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104 #define ngx_read_file_n "read()" |
2180 | 105 #endif |
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107 ssize_t ngx_write_file(ngx_file_t *file, u_char *buf, size_t size, |
497 | 108 off_t offset); |
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109 |
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110 ssize_t ngx_write_chain_to_file(ngx_file_t *file, ngx_chain_t *ce, |
497 | 111 off_t offset, ngx_pool_t *pool); |
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112 |
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113 |
1055 | 114 #define ngx_read_fd read |
115 #define ngx_read_fd_n "read()" | |
116 | |
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117 /* |
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118 * we use inlined function instead of simple #define |
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119 * because glibc 2.3 sets warn_unused_result attribute for write() |
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120 * and in this case gcc 4.3 ignores (void) cast |
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121 */ |
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122 static ngx_inline ssize_t |
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123 ngx_write_fd(ngx_fd_t fd, void *buf, size_t n) |
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124 { |
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125 return write(fd, buf, n); |
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126 } |
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127 |
1055 | 128 #define ngx_write_fd_n "write()" |
129 | |
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130 |
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131 #define ngx_write_console ngx_write_fd |
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132 |
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133 |
571 | 134 #define ngx_linefeed(p) *p++ = LF; |
135 #define NGX_LINEFEED_SIZE 1 | |
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136 #define NGX_LINEFEED "\x0a" |
571 | 137 |
138 | |
633 | 139 #define ngx_rename_file(o, n) rename((const char *) o, (const char *) n) |
681 | 140 #define ngx_rename_file_n "rename()" |
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141 |
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142 |
669 | 143 #define ngx_change_file_access(n, a) chmod((const char *) n, a) |
681 | 144 #define ngx_change_file_access_n "chmod()" |
145 | |
146 | |
147 ngx_int_t ngx_set_file_time(u_char *name, ngx_fd_t fd, time_t s); | |
148 #define ngx_set_file_time_n "utimes()" | |
669 | 149 |
150 | |
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151 #define ngx_file_info(file, sb) stat((const char *) file, sb) |
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152 #define ngx_file_info_n "stat()" |
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153 |
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154 #define ngx_fd_info(fd, sb) fstat(fd, sb) |
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155 #define ngx_fd_info_n "fstat()" |
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156 |
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157 #define ngx_link_info(file, sb) lstat((const char *) file, sb) |
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158 #define ngx_link_info_n "lstat()" |
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159 |
186
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160 #define ngx_is_dir(sb) (S_ISDIR((sb)->st_mode)) |
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161 #define ngx_is_file(sb) (S_ISREG((sb)->st_mode)) |
669 | 162 #define ngx_is_link(sb) (S_ISLNK((sb)->st_mode)) |
3281 | 163 #define ngx_is_exec(sb) (((sb)->st_mode & S_IXUSR) == S_IXUSR) |
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164 #define ngx_file_access(sb) ((sb)->st_mode & 0777) |
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165 #define ngx_file_size(sb) (sb)->st_size |
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166 #define ngx_file_fs_size(sb) ((sb)->st_blocks * 512) |
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167 #define ngx_file_mtime(sb) (sb)->st_mtime |
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168 #define ngx_file_uniq(sb) (sb)->st_ino |
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169 |
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170 |
3651 | 171 ngx_int_t ngx_create_file_mapping(ngx_file_mapping_t *fm); |
172 void ngx_close_file_mapping(ngx_file_mapping_t *fm); | |
173 | |
174 | |
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175 #if (NGX_HAVE_CASELESS_FILESYSTEM) |
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176 |
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177 #define ngx_filename_cmp(s1, s2, n) strncasecmp((char *) s1, (char *) s2, n) |
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178 |
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179 #else |
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180 |
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181 #define ngx_filename_cmp ngx_memcmp |
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182 |
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183 #endif |
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184 |
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185 |
2259 | 186 #define ngx_realpath(p, r) realpath((char *) p, (char *) r) |
187 #define ngx_realpath_n "realpath()" | |
2758 | 188 #define ngx_getcwd(buf, size) (getcwd((char *) buf, size) != NULL) |
336
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189 #define ngx_getcwd_n "getcwd()" |
2744 | 190 #define ngx_path_separator(c) ((c) == '/') |
191 | |
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192 #define NGX_MAX_PATH PATH_MAX |
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193 |
186
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194 #define NGX_DIR_MASK_LEN 0 |
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195 |
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196 |
467 | 197 ngx_int_t ngx_open_dir(ngx_str_t *name, ngx_dir_t *dir); |
185
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198 #define ngx_open_dir_n "opendir()" |
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199 |
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200 |
186
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201 #define ngx_close_dir(d) closedir((d)->dir) |
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202 #define ngx_close_dir_n "closedir()" |
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203 |
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204 |
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205 ngx_int_t ngx_read_dir(ngx_dir_t *dir); |
185
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206 #define ngx_read_dir_n "readdir()" |
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207 |
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208 |
669 | 209 #define ngx_create_dir(name, access) mkdir((const char *) name, access) |
186
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210 #define ngx_create_dir_n "mkdir()" |
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211 |
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212 |
290
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213 #define ngx_delete_dir(name) rmdir((const char *) name) |
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214 #define ngx_delete_dir_n "rmdir()" |
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215 |
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216 |
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217 #define ngx_dir_access(a) (a | (a & 0444) >> 2) |
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218 |
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219 |
457 | 220 #define ngx_de_name(dir) ((u_char *) (dir)->de->d_name) |
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221 #if (NGX_HAVE_D_NAMLEN) |
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222 #define ngx_de_namelen(dir) (dir)->de->d_namlen |
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223 #else |
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224 #define ngx_de_namelen(dir) ngx_strlen((dir)->de->d_name) |
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225 #endif |
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226 |
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227 static ngx_inline ngx_int_t |
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228 ngx_de_info(u_char *name, ngx_dir_t *dir) |
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229 { |
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230 dir->type = 0; |
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231 return stat((const char *) name, &dir->info); |
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232 } |
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233 |
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234 #define ngx_de_info_n "stat()" |
497 | 235 #define ngx_de_link_info(name, dir) lstat((const char *) name, &(dir)->info) |
236 #define ngx_de_link_info_n "lstat()" | |
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237 |
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238 #if (NGX_HAVE_D_TYPE) |
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239 |
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240 /* |
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241 * some file systems (e.g. XFS on Linux and CD9660 on FreeBSD) |
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242 * do not set dirent.d_type |
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243 */ |
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244 |
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245 #define ngx_de_is_dir(dir) \ |
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246 (((dir)->type) ? ((dir)->type == DT_DIR) : (S_ISDIR((dir)->info.st_mode))) |
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247 #define ngx_de_is_file(dir) \ |
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248 (((dir)->type) ? ((dir)->type == DT_REG) : (S_ISREG((dir)->info.st_mode))) |
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249 #define ngx_de_is_link(dir) \ |
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250 (((dir)->type) ? ((dir)->type == DT_LNK) : (S_ISLNK((dir)->info.st_mode))) |
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251 |
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252 #else |
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253 |
186
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254 #define ngx_de_is_dir(dir) (S_ISDIR((dir)->info.st_mode)) |
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255 #define ngx_de_is_file(dir) (S_ISREG((dir)->info.st_mode)) |
497 | 256 #define ngx_de_is_link(dir) (S_ISLNK((dir)->info.st_mode)) |
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257 |
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258 #endif |
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259 |
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260 #define ngx_de_access(dir) (((dir)->info.st_mode) & 0777) |
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261 #define ngx_de_size(dir) (dir)->info.st_size |
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262 #define ngx_de_fs_size(dir) ((dir)->info.st_blocks * 512) |
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263 #define ngx_de_mtime(dir) (dir)->info.st_mtime |
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264 |
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265 |
727 | 266 ngx_int_t ngx_open_glob(ngx_glob_t *gl); |
267 #define ngx_open_glob_n "glob()" | |
268 ngx_int_t ngx_read_glob(ngx_glob_t *gl, ngx_str_t *name); | |
269 void ngx_close_glob(ngx_glob_t *gl); | |
270 | |
271 | |
611 | 272 ngx_err_t ngx_trylock_fd(ngx_fd_t fd); |
273 ngx_err_t ngx_lock_fd(ngx_fd_t fd); | |
274 ngx_err_t ngx_unlock_fd(ngx_fd_t fd); | |
275 | |
276 #define ngx_trylock_fd_n "fcntl(F_SETLK, F_WRLCK)" | |
277 #define ngx_lock_fd_n "fcntl(F_SETLKW, F_WRLCK)" | |
278 #define ngx_unlock_fd_n "fcntl(F_SETLK, F_UNLCK)" | |
279 | |
280 | |
3178 | 281 #if (NGX_HAVE_F_READAHEAD) |
282 | |
283 #define NGX_HAVE_READ_AHEAD 1 | |
284 | |
285 #define ngx_read_ahead(fd, n) fcntl(fd, F_READAHEAD, (int) n) | |
286 #define ngx_read_ahead_n "fcntl(fd, F_READAHEAD)" | |
287 | |
288 #elif (NGX_HAVE_POSIX_FADVISE) | |
289 | |
290 #define NGX_HAVE_READ_AHEAD 1 | |
291 | |
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292 ngx_int_t ngx_read_ahead(ngx_fd_t fd, size_t n); |
3178 | 293 #define ngx_read_ahead_n "posix_fadvise(POSIX_FADV_SEQUENTIAL)" |
294 | |
295 #else | |
296 | |
297 #define ngx_read_ahead(fd, n) 0 | |
298 #define ngx_read_ahead_n "ngx_read_ahead_n" | |
299 | |
300 #endif | |
301 | |
302 | |
2129 | 303 #if (NGX_HAVE_O_DIRECT) |
304 | |
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305 ngx_int_t ngx_directio_on(ngx_fd_t fd); |
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306 #define ngx_directio_on_n "fcntl(O_DIRECT)" |
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307 |
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308 ngx_int_t ngx_directio_off(ngx_fd_t fd); |
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309 #define ngx_directio_off_n "fcntl(!O_DIRECT)" |
2129 | 310 |
311 #elif (NGX_HAVE_F_NOCACHE) | |
312 | |
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313 #define ngx_directio_on(fd) fcntl(fd, F_NOCACHE, 1) |
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314 #define ngx_directio_on_n "fcntl(F_NOCACHE, 1)" |
2129 | 315 |
2143 | 316 #elif (NGX_HAVE_DIRECTIO) |
317 | |
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318 #define ngx_directio_on(fd) directio(fd, DIRECTIO_ON) |
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319 #define ngx_directio_on_n "directio(DIRECTIO_ON)" |
2143 | 320 |
2129 | 321 #else |
322 | |
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323 #define ngx_directio_on(fd) 0 |
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324 #define ngx_directio_on_n "ngx_directio_on_n" |
2129 | 325 |
326 #endif | |
327 | |
2615 | 328 size_t ngx_fs_bsize(u_char *name); |
329 | |
330 | |
4475 | 331 #if (NGX_HAVE_OPENAT) |
332 | |
333 #define ngx_openat_file(fd, name, mode, create, access) \ | |
334 openat(fd, (const char *) name, mode|create, access) | |
335 | |
336 #define ngx_openat_file_n "openat()" | |
337 | |
338 #define ngx_file_at_info(fd, name, sb, flag) \ | |
339 fstatat(fd, (const char *) name, sb, flag) | |
340 | |
341 #define ngx_file_at_info_n "fstatat()" | |
342 | |
343 #endif | |
344 | |
345 | |
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346 #define ngx_stderr STDERR_FILENO |
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347 #define ngx_set_stderr(fd) dup2(fd, STDERR_FILENO) |
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348 #define ngx_set_stderr_n "dup2(STDERR_FILENO)" |
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349 |
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350 |
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351 #if (NGX_HAVE_FILE_AIO) |
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352 |
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353 ssize_t ngx_file_aio_read(ngx_file_t *file, u_char *buf, size_t size, |
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354 off_t offset, ngx_pool_t *pool); |
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355 |
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356 extern ngx_uint_t ngx_file_aio; |
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357 |
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358 #endif |
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359 |
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360 |
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361 #endif /* _NGX_FILES_H_INCLUDED_ */ |