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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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582
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21 u_char *name;
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22 size_t size;
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23 void *addr;
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24 ngx_fd_t fd;
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25 ngx_log_t *log;
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26 } ngx_file_mapping_t;
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27
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28
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29 typedef struct {
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500
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30 DIR *dir;
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31 struct dirent *de;
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32 struct stat info;
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406
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33
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500
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34 unsigned type:8;
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35 unsigned valid_info:1;
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406
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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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0
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48 #define NGX_INVALID_FILE -1
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49 #define NGX_FILE_ERROR -1
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50
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51
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52
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372
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53 #ifdef __CYGWIN__
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54
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390
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55 #define NGX_HAVE_CASELESS_FILESYSTEM 1
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56
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372
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57 #define ngx_open_file(name, mode, create, access) \
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58 open((const char *) name, mode|create|O_BINARY, access)
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59
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60 #else
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61
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276
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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)
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372
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64
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65 #endif
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66
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0
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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
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276
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70 #define NGX_FILE_WRONLY O_WRONLY
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0
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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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478
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74 #define NGX_FILE_TRUNCATE O_CREAT|O_TRUNC
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470
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75 #define NGX_FILE_APPEND O_WRONLY|O_APPEND
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568
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76 #define NGX_FILE_NONBLOCK O_NONBLOCK
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0
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77
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276
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78 #define NGX_FILE_DEFAULT_ACCESS 0644
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464
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79 #define NGX_FILE_OWNER_ACCESS 0600
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276
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80
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0
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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
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182
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90 ngx_fd_t ngx_open_tempfile(u_char *name, ngx_uint_t persistent,
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276
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91 ngx_uint_t access);
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0
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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);
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398
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96 #if (NGX_HAVE_PREAD)
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97 #define ngx_read_file_n "pread()"
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98 #else
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0
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99 #define ngx_read_file_n "read()"
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398
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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,
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46
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103 off_t offset);
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0
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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,
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46
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106 off_t offset, ngx_pool_t *pool);
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0
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107
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108
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276
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109 #define ngx_read_fd read
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110 #define ngx_read_fd_n "read()"
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111
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418
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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
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276
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123 #define ngx_write_fd_n "write()"
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124
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484
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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
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120
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129 #define ngx_linefeed(p) *p++ = LF;
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130 #define NGX_LINEFEED_SIZE 1
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648
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131 #define NGX_LINEFEED "\x0a"
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120
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132
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133
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182
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134 #define ngx_rename_file(o, n) rename((const char *) o, (const char *) n)
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230
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135 #define ngx_rename_file_n "rename()"
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0
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136
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137
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218
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138 #define ngx_change_file_access(n, a) chmod((const char *) n, a)
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230
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139 #define ngx_change_file_access_n "chmod()"
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140
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141
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142 ngx_int_t ngx_set_file_time(u_char *name, ngx_fd_t fd, time_t s);
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143 #define ngx_set_file_time_n "utimes()"
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218
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144
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145
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0
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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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568
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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
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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))
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218
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157 #define ngx_is_link(sb) (S_ISLNK((sb)->st_mode))
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540
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158 #define ngx_is_exec(sb) (((sb)->st_mode & S_IXUSR) == S_IXUSR)
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276
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159 #define ngx_file_access(sb) ((sb)->st_mode & 0777)
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0
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160 #define ngx_file_size(sb) (sb)->st_size
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622
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161 #define ngx_file_fs_size(sb) ((sb)->st_blocks * 512)
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0
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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
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582
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166 ngx_int_t ngx_create_file_mapping(ngx_file_mapping_t *fm);
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167 void ngx_close_file_mapping(ngx_file_mapping_t *fm);
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168
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169
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390
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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
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0
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180
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412
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181 #define ngx_realpath(p, r) realpath((char *) p, (char *) r)
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182 #define ngx_realpath_n "realpath()"
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482
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183 #define ngx_getcwd(buf, size) (getcwd((char *) buf, size) != NULL)
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0
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184 #define ngx_getcwd_n "getcwd()"
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482
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185 #define ngx_path_separator(c) ((c) == '/')
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186
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0
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187 #define NGX_MAX_PATH PATH_MAX
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188
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189 #define NGX_DIR_MASK_LEN 0
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190
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191
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16
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192 ngx_int_t ngx_open_dir(ngx_str_t *name, ngx_dir_t *dir);
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0
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193 #define ngx_open_dir_n "opendir()"
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194
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195
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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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406
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200 ngx_int_t ngx_read_dir(ngx_dir_t *dir);
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0
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201 #define ngx_read_dir_n "readdir()"
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202
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203
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218
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204 #define ngx_create_dir(name, access) mkdir((const char *) name, access)
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0
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205 #define ngx_create_dir_n "mkdir()"
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206
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207
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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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282
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212 #define ngx_dir_access(a) (a | (a & 0444) >> 2)
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213
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214
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6
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215 #define ngx_de_name(dir) ((u_char *) (dir)->de->d_name)
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406
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216 #if (NGX_HAVE_D_NAMLEN)
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0
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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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536
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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
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0
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229 #define ngx_de_info_n "stat()"
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46
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230 #define ngx_de_link_info(name, dir) lstat((const char *) name, &(dir)->info)
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231 #define ngx_de_link_info_n "lstat()"
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406
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232
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233 #if (NGX_HAVE_D_TYPE)
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234
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536
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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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456
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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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536
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245 (((dir)->type) ? ((dir)->type == DT_LNK) : (S_ISLNK((dir)->info.st_mode)))
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456
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246
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406
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247 #else
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248
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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))
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46
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251 #define ngx_de_is_link(dir) (S_ISLNK((dir)->info.st_mode))
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406
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252
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253 #endif
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254
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276
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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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632
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257 #define ngx_de_fs_size(dir) ((dir)->info.st_blocks * 512)
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0
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258 #define ngx_de_mtime(dir) (dir)->info.st_mtime
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259
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260
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238
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261 ngx_int_t ngx_open_glob(ngx_glob_t *gl);
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262 #define ngx_open_glob_n "glob()"
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263 ngx_int_t ngx_read_glob(ngx_glob_t *gl, ngx_str_t *name);
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264 void ngx_close_glob(ngx_glob_t *gl);
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265
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266
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160
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267 ngx_err_t ngx_trylock_fd(ngx_fd_t fd);
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268 ngx_err_t ngx_lock_fd(ngx_fd_t fd);
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269 ngx_err_t ngx_unlock_fd(ngx_fd_t fd);
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270
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271 #define ngx_trylock_fd_n "fcntl(F_SETLK, F_WRLCK)"
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272 #define ngx_lock_fd_n "fcntl(F_SETLKW, F_WRLCK)"
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273 #define ngx_unlock_fd_n "fcntl(F_SETLK, F_UNLCK)"
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274
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275
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532
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276 #if (NGX_HAVE_F_READAHEAD)
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277
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278 #define NGX_HAVE_READ_AHEAD 1
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279
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280 #define ngx_read_ahead(fd, n) fcntl(fd, F_READAHEAD, (int) n)
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281 #define ngx_read_ahead_n "fcntl(fd, F_READAHEAD)"
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282
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283 #elif (NGX_HAVE_POSIX_FADVISE)
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284
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285 #define NGX_HAVE_READ_AHEAD 1
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286
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546
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287 ngx_int_t ngx_read_ahead(ngx_fd_t fd, size_t n);
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532
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288 #define ngx_read_ahead_n "posix_fadvise(POSIX_FADV_SEQUENTIAL)"
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289
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290 #else
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291
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292 #define ngx_read_ahead(fd, n) 0
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293 #define ngx_read_ahead_n "ngx_read_ahead_n"
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294
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295 #endif
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296
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297
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390
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298 #if (NGX_HAVE_O_DIRECT)
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299
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410
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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)"
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390
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305
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306 #elif (NGX_HAVE_F_NOCACHE)
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307
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410
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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)"
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390
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310
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392
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311 #elif (NGX_HAVE_DIRECTIO)
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312
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410
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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)"
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392
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315
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390
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316 #else
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317
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410
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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"
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390
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320
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321 #endif
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322
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468
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323 size_t ngx_fs_bsize(u_char *name);
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324
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325
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482
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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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518
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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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542
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336 extern ngx_uint_t ngx_file_aio;
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337
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518
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338 #endif
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339
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340
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0
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341 #endif /* _NGX_FILES_H_INCLUDED_ */
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