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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 #ifndef _NGX_FILES_H_INCLUDED_
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8 #define _NGX_FILES_H_INCLUDED_
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9
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10
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11 #include <ngx_config.h>
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12 #include <ngx_core.h>
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13
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14
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406
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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 {
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21 DIR *dir;
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22 struct dirent *de;
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23 struct stat info;
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24
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25 unsigned type:8;
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26 unsigned valid_info:1;
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27 unsigned valid_type:1;
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28 } ngx_dir_t;
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29
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30
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31 typedef struct {
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32 size_t n;
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33 glob_t pglob;
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34 u_char *pattern;
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35 ngx_log_t *log;
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36 ngx_uint_t test;
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37 } ngx_glob_t;
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38
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39
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0
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40 #define NGX_INVALID_FILE -1
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41 #define NGX_FILE_ERROR -1
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42
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43
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44
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372
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45 #ifdef __CYGWIN__
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46
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390
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47 #define NGX_HAVE_CASELESS_FILESYSTEM 1
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48
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372
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49 #define ngx_open_file(name, mode, create, access) \
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50 open((const char *) name, mode|create|O_BINARY, access)
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51
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52 #else
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53
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276
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54 #define ngx_open_file(name, mode, create, access) \
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55 open((const char *) name, mode|create, access)
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372
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56
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57 #endif
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58
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0
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59 #define ngx_open_file_n "open()"
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60
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61 #define NGX_FILE_RDONLY O_RDONLY
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276
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62 #define NGX_FILE_WRONLY O_WRONLY
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0
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63 #define NGX_FILE_RDWR O_RDWR
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64 #define NGX_FILE_CREATE_OR_OPEN O_CREAT
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65 #define NGX_FILE_OPEN 0
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66 #define NGX_FILE_TRUNCATE O_TRUNC
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67 #define NGX_FILE_APPEND O_APPEND
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68
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276
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69 #define NGX_FILE_DEFAULT_ACCESS 0644
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70
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0
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71
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72 #define ngx_close_file close
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73 #define ngx_close_file_n "close()"
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74
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75
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76 #define ngx_delete_file(name) unlink((const char *) name)
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77 #define ngx_delete_file_n "unlink()"
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78
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79
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182
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80 ngx_fd_t ngx_open_tempfile(u_char *name, ngx_uint_t persistent,
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276
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81 ngx_uint_t access);
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0
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82 #define ngx_open_tempfile_n "open()"
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83
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84
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85 ssize_t ngx_read_file(ngx_file_t *file, u_char *buf, size_t size, off_t offset);
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398
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86 #if (NGX_HAVE_PREAD)
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87 #define ngx_read_file_n "pread()"
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88 #else
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0
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89 #define ngx_read_file_n "read()"
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398
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90 #endif
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0
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91
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92 ssize_t ngx_write_file(ngx_file_t *file, u_char *buf, size_t size,
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46
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93 off_t offset);
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0
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94
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95 ssize_t ngx_write_chain_to_file(ngx_file_t *file, ngx_chain_t *ce,
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46
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96 off_t offset, ngx_pool_t *pool);
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0
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97
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98
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276
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99 #define ngx_read_fd read
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100 #define ngx_read_fd_n "read()"
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101
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418
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102 /*
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103 * we use inlined function instead of simple #define
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104 * because glibc 2.3 sets warn_unused_result attribute for write()
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105 * and in this case gcc 4.3 ignores (void) cast
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106 */
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107 static ngx_inline ssize_t
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108 ngx_write_fd(ngx_fd_t fd, void *buf, size_t n)
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109 {
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110 return write(fd, buf, n);
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111 }
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112
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276
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113 #define ngx_write_fd_n "write()"
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114
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120
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115 #define ngx_linefeed(p) *p++ = LF;
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116 #define NGX_LINEFEED_SIZE 1
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117
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118
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182
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119 #define ngx_rename_file(o, n) rename((const char *) o, (const char *) n)
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230
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120 #define ngx_rename_file_n "rename()"
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0
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121
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122
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218
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123 #define ngx_change_file_access(n, a) chmod((const char *) n, a)
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230
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124 #define ngx_change_file_access_n "chmod()"
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125
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126
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127 ngx_int_t ngx_set_file_time(u_char *name, ngx_fd_t fd, time_t s);
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128 #define ngx_set_file_time_n "utimes()"
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218
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129
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130
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0
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131 #define ngx_file_info(file, sb) stat((const char *) file, sb)
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132 #define ngx_file_info_n "stat()"
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133
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134 #define ngx_fd_info(fd, sb) fstat(fd, sb)
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135 #define ngx_fd_info_n "fstat()"
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136
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137 #define ngx_is_dir(sb) (S_ISDIR((sb)->st_mode))
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138 #define ngx_is_file(sb) (S_ISREG((sb)->st_mode))
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218
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139 #define ngx_is_link(sb) (S_ISLNK((sb)->st_mode))
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140 #define ngx_is_exec(sb) ((sb)->st_mode & S_IXUSR)
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276
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141 #define ngx_file_access(sb) ((sb)->st_mode & 0777)
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0
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142 #define ngx_file_size(sb) (sb)->st_size
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143 #define ngx_file_mtime(sb) (sb)->st_mtime
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144 #define ngx_file_uniq(sb) (sb)->st_ino
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145
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146
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390
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147 #if (NGX_HAVE_CASELESS_FILESYSTEM)
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148
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149 #define ngx_filename_cmp(s1, s2, n) strncasecmp((char *) s1, (char *) s2, n)
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150
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151 #else
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152
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153 #define ngx_filename_cmp ngx_memcmp
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154
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155 #endif
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156
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0
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157
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412
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158 #define ngx_realpath(p, r) realpath((char *) p, (char *) r)
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159 #define ngx_realpath_n "realpath()"
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0
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160 #define ngx_getcwd(buf, size) (getcwd(buf, size) != NULL)
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161 #define ngx_getcwd_n "getcwd()"
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162 #define NGX_MAX_PATH PATH_MAX
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163
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164 #define NGX_DIR_MASK_LEN 0
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165
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166
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16
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167 ngx_int_t ngx_open_dir(ngx_str_t *name, ngx_dir_t *dir);
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0
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168 #define ngx_open_dir_n "opendir()"
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169
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170
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171 #define ngx_close_dir(d) closedir((d)->dir)
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172 #define ngx_close_dir_n "closedir()"
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173
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174
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406
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175 ngx_int_t ngx_read_dir(ngx_dir_t *dir);
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0
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176 #define ngx_read_dir_n "readdir()"
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177
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178
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218
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179 #define ngx_create_dir(name, access) mkdir((const char *) name, access)
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0
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180 #define ngx_create_dir_n "mkdir()"
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181
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182
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183 #define ngx_delete_dir(name) rmdir((const char *) name)
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184 #define ngx_delete_dir_n "rmdir()"
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185
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186
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282
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187 #define ngx_dir_access(a) (a | (a & 0444) >> 2)
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188
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189
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6
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190 #define ngx_de_name(dir) ((u_char *) (dir)->de->d_name)
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406
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191 #if (NGX_HAVE_D_NAMLEN)
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0
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192 #define ngx_de_namelen(dir) (dir)->de->d_namlen
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193 #else
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194 #define ngx_de_namelen(dir) ngx_strlen((dir)->de->d_name)
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195 #endif
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46
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196 #define ngx_de_info(name, dir) stat((const char *) name, &(dir)->info)
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0
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197 #define ngx_de_info_n "stat()"
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46
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198 #define ngx_de_link_info(name, dir) lstat((const char *) name, &(dir)->info)
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199 #define ngx_de_link_info_n "lstat()"
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406
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200
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201 #if (NGX_HAVE_D_TYPE)
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202
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456
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203 #if (NGX_LINUX)
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204
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205 /* XFS on Linux does not set dirent.d_type */
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206
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207 #define ngx_de_is_dir(dir) \
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208 (((dir)->type) ? ((dir)->type == DT_DIR) : (S_ISDIR((dir)->info.st_mode)))
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209 #define ngx_de_is_file(dir) \
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210 (((dir)->type) ? ((dir)->type == DT_REG) : (S_ISREG((dir)->info.st_mode)))
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211 #define ngx_de_is_link(dir) \
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212 (((dir)->type) ? ((dir)->type == DT_LINK) : (S_ISLNK((dir)->info.st_mode)))
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213
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214 #else
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215
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406
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216 #define ngx_de_is_dir(dir) ((dir)->type == DT_DIR)
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217 #define ngx_de_is_file(dir) ((dir)->type == DT_REG)
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218 #define ngx_de_is_link(dir) ((dir)->type == DT_LINK)
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219
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456
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220 #endif /* NGX_LINUX */
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221
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406
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222 #else
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223
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224 #define ngx_de_is_dir(dir) (S_ISDIR((dir)->info.st_mode))
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225 #define ngx_de_is_file(dir) (S_ISREG((dir)->info.st_mode))
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226 #define ngx_de_is_link(dir) (S_ISLNK((dir)->info.st_mode))
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406
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227
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228 #endif
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229
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276
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230 #define ngx_de_access(dir) (((dir)->info.st_mode) & 0777)
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0
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231 #define ngx_de_size(dir) (dir)->info.st_size
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232 #define ngx_de_mtime(dir) (dir)->info.st_mtime
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233
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234
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238
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235 ngx_int_t ngx_open_glob(ngx_glob_t *gl);
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236 #define ngx_open_glob_n "glob()"
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237 ngx_int_t ngx_read_glob(ngx_glob_t *gl, ngx_str_t *name);
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238 void ngx_close_glob(ngx_glob_t *gl);
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239
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240
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160
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241 ngx_err_t ngx_trylock_fd(ngx_fd_t fd);
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242 ngx_err_t ngx_lock_fd(ngx_fd_t fd);
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243 ngx_err_t ngx_unlock_fd(ngx_fd_t fd);
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244
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245 #define ngx_trylock_fd_n "fcntl(F_SETLK, F_WRLCK)"
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246 #define ngx_lock_fd_n "fcntl(F_SETLKW, F_WRLCK)"
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247 #define ngx_unlock_fd_n "fcntl(F_SETLK, F_UNLCK)"
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248
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249
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390
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250 #if (NGX_HAVE_O_DIRECT)
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251
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410
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252 ngx_int_t ngx_directio_on(ngx_fd_t fd);
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253 #define ngx_directio_on_n "fcntl(O_DIRECT)"
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254
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255 ngx_int_t ngx_directio_off(ngx_fd_t fd);
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256 #define ngx_directio_off_n "fcntl(!O_DIRECT)"
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390
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257
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258 #elif (NGX_HAVE_F_NOCACHE)
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259
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410
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260 #define ngx_directio_on(fd) fcntl(fd, F_NOCACHE, 1)
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261 #define ngx_directio_on_n "fcntl(F_NOCACHE, 1)"
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390
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262
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392
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263 #elif (NGX_HAVE_DIRECTIO)
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264
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410
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265 #define ngx_directio_on(fd) directio(fd, DIRECTIO_ON)
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266 #define ngx_directio_on_n "directio(DIRECTIO_ON)"
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392
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267
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390
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268 #else
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269
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410
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270 #define ngx_directio_on(fd) 0
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271 #define ngx_directio_on_n "ngx_directio_on_n"
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390
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272
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273 #endif
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274
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275
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276 #endif /* _NGX_FILES_H_INCLUDED_ */
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