Mercurial > hg > nginx
annotate src/os/unix/ngx_files.h @ 4403:c8b9f62cb414
Fixed sched_setaffinity(2) to correctly pass size.
Second argument (cpusetsize) is size in bytes, not in bits. Previously
used constant 32 resulted in reading of uninitialized memory and caused
EINVAL to be returned on some Linux kernels.
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Mon, 16 Jan 2012 11:13:48 +0000 |
parents | f72496073689 |
children | d620f497c50f |
rev | line source |
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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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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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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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51 |
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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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94 |
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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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101 |
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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_ */ |