stat.h 7.4 KB

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  1. /* Copyright (C) 1999,2000,2001,2002,2003,2009 Free Software Foundation, Inc.
  2. This file is part of the GNU C Library.
  3. The GNU C Library is free software; you can redistribute it and/or
  4. modify it under the terms of the GNU Lesser General Public
  5. License as published by the Free Software Foundation; either
  6. version 2.1 of the License, or (at your option) any later version.
  7. The GNU C Library is distributed in the hope that it will be useful,
  8. but WITHOUT ANY WARRANTY; without even the implied warranty of
  9. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  10. Lesser General Public License for more details.
  11. You should have received a copy of the GNU Lesser General Public
  12. License along with the GNU C Library; if not, write to the Free
  13. Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  14. 02111-1307 USA. */
  15. #ifndef _SYS_STAT_H
  16. # error "Never include <bits/stat.h> directly; use <sys/stat.h> instead."
  17. #endif
  18. /* Versions of the `struct stat' data structure. */
  19. #define _STAT_VER_KERNEL 0
  20. #if __WORDSIZE == 32
  21. # define _STAT_VER_SVR4 2
  22. # define _STAT_VER_LINUX 3
  23. /* i386 versions of the `xmknod' interface. */
  24. # define _MKNOD_VER_LINUX 1
  25. # define _MKNOD_VER_SVR4 2
  26. # define _MKNOD_VER _MKNOD_VER_LINUX /* The bits defined below. */
  27. #else
  28. # define _STAT_VER_LINUX 1
  29. /* x86-64 versions of the `xmknod' interface. */
  30. # define _MKNOD_VER_LINUX 0
  31. #endif
  32. #define _STAT_VER _STAT_VER_LINUX
  33. struct stat
  34. {
  35. __dev_t st_dev; /* Device. */
  36. #if __WORDSIZE == 32
  37. unsigned short int __pad1;
  38. #endif
  39. #if __WORDSIZE == 64 || !defined __USE_FILE_OFFSET64
  40. __ino_t st_ino; /* File serial number. */
  41. #else
  42. __ino_t __st_ino; /* 32bit file serial number. */
  43. #endif
  44. #if __WORDSIZE == 32
  45. __mode_t st_mode; /* File mode. */
  46. __nlink_t st_nlink; /* Link count. */
  47. #else
  48. __nlink_t st_nlink; /* Link count. */
  49. __mode_t st_mode; /* File mode. */
  50. #endif
  51. __uid_t st_uid; /* User ID of the file's owner. */
  52. __gid_t st_gid; /* Group ID of the file's group.*/
  53. #if __WORDSIZE == 64
  54. int __pad0;
  55. #endif
  56. __dev_t st_rdev; /* Device number, if device. */
  57. #if __WORDSIZE == 32
  58. unsigned short int __pad2;
  59. #endif
  60. #if __WORDSIZE == 64 || !defined __USE_FILE_OFFSET64
  61. __off_t st_size; /* Size of file, in bytes. */
  62. #else
  63. __off64_t st_size; /* Size of file, in bytes. */
  64. #endif
  65. __blksize_t st_blksize; /* Optimal block size for I/O. */
  66. #if __WORDSIZE == 64 || !defined __USE_FILE_OFFSET64
  67. __blkcnt_t st_blocks; /* Number 512-byte blocks allocated. */
  68. #else
  69. __blkcnt64_t st_blocks; /* Number 512-byte blocks allocated. */
  70. #endif
  71. #ifdef __USE_MISC
  72. /* Nanosecond resolution timestamps are stored in a format
  73. equivalent to 'struct timespec'. This is the type used
  74. whenever possible but the Unix namespace rules do not allow the
  75. identifier 'timespec' to appear in the <sys/stat.h> header.
  76. Therefore we have to handle the use of this header in strictly
  77. standard-compliant sources special. */
  78. struct timespec st_atim; /* Time of last access. */
  79. struct timespec st_mtim; /* Time of last modification. */
  80. struct timespec st_ctim; /* Time of last status change. */
  81. # define st_atime st_atim.tv_sec /* Backward compatibility. */
  82. # define st_mtime st_mtim.tv_sec
  83. # define st_ctime st_ctim.tv_sec
  84. #else
  85. __time_t st_atime; /* Time of last access. */
  86. unsigned long int st_atimensec; /* Nscecs of last access. */
  87. __time_t st_mtime; /* Time of last modification. */
  88. unsigned long int st_mtimensec; /* Nsecs of last modification. */
  89. __time_t st_ctime; /* Time of last status change. */
  90. unsigned long int st_ctimensec; /* Nsecs of last status change. */
  91. #endif
  92. #if __WORDSIZE == 64
  93. long int __unused[3];
  94. #else
  95. # ifndef __USE_FILE_OFFSET64
  96. unsigned long int __unused4;
  97. unsigned long int __unused5;
  98. # else
  99. __ino64_t st_ino; /* File serial number. */
  100. # endif
  101. #endif
  102. };
  103. #ifdef __USE_LARGEFILE64
  104. /* Note stat64 has the same shape as stat for x86-64. */
  105. struct stat64
  106. {
  107. __dev_t st_dev; /* Device. */
  108. #if __WORDSIZE == 64
  109. __ino64_t st_ino; /* File serial number. */
  110. __nlink_t st_nlink; /* Link count. */
  111. __mode_t st_mode; /* File mode. */
  112. #else
  113. unsigned int __pad1;
  114. __ino_t __st_ino; /* 32bit file serial number. */
  115. __mode_t st_mode; /* File mode. */
  116. __nlink_t st_nlink; /* Link count. */
  117. #endif
  118. __uid_t st_uid; /* User ID of the file's owner. */
  119. __gid_t st_gid; /* Group ID of the file's group.*/
  120. #if __WORDSIZE == 64
  121. int __pad0;
  122. __dev_t st_rdev; /* Device number, if device. */
  123. __off_t st_size; /* Size of file, in bytes. */
  124. #else
  125. __dev_t st_rdev; /* Device number, if device. */
  126. unsigned int __pad2;
  127. __off64_t st_size; /* Size of file, in bytes. */
  128. #endif
  129. __blksize_t st_blksize; /* Optimal block size for I/O. */
  130. __blkcnt64_t st_blocks; /* Nr. 512-byte blocks allocated. */
  131. #ifdef __USE_MISC
  132. /* Nanosecond resolution timestamps are stored in a format
  133. equivalent to 'struct timespec'. This is the type used
  134. whenever possible but the Unix namespace rules do not allow the
  135. identifier 'timespec' to appear in the <sys/stat.h> header.
  136. Therefore we have to handle the use of this header in strictly
  137. standard-compliant sources special. */
  138. struct timespec st_atim; /* Time of last access. */
  139. struct timespec st_mtim; /* Time of last modification. */
  140. struct timespec st_ctim; /* Time of last status change. */
  141. # define st_atime st_atim.tv_sec /* Backward compatibility. */
  142. # define st_mtime st_mtim.tv_sec
  143. # define st_ctime st_ctim.tv_sec
  144. #else
  145. __time_t st_atime; /* Time of last access. */
  146. unsigned long int st_atimensec; /* Nscecs of last access. */
  147. __time_t st_mtime; /* Time of last modification. */
  148. unsigned long int st_mtimensec; /* Nsecs of last modification. */
  149. __time_t st_ctime; /* Time of last status change. */
  150. unsigned long int st_ctimensec; /* Nsecs of last status change. */
  151. #endif
  152. #if __WORDSIZE == 64
  153. long int __unused[3];
  154. #else
  155. __ino64_t st_ino; /* File serial number. */
  156. #endif
  157. };
  158. #endif
  159. /* Tell code we have these members. */
  160. #define _STATBUF_ST_BLKSIZE
  161. #define _STATBUF_ST_RDEV
  162. /* Nanosecond resolution time values are supported. */
  163. #define _STATBUF_ST_NSEC
  164. /* Encoding of the file mode. */
  165. #define __S_IFMT 0170000 /* These bits determine file type. */
  166. /* File types. */
  167. #define __S_IFDIR 0040000 /* Directory. */
  168. #define __S_IFCHR 0020000 /* Character device. */
  169. #define __S_IFBLK 0060000 /* Block device. */
  170. #define __S_IFREG 0100000 /* Regular file. */
  171. #define __S_IFIFO 0010000 /* FIFO. */
  172. #define __S_IFLNK 0120000 /* Symbolic link. */
  173. #define __S_IFSOCK 0140000 /* Socket. */
  174. /* POSIX.1b objects. Note that these macros always evaluate to zero. But
  175. they do it by enforcing the correct use of the macros. */
  176. #define __S_TYPEISMQ(buf) ((buf)->st_mode - (buf)->st_mode)
  177. #define __S_TYPEISSEM(buf) ((buf)->st_mode - (buf)->st_mode)
  178. #define __S_TYPEISSHM(buf) ((buf)->st_mode - (buf)->st_mode)
  179. /* Protection bits. */
  180. #define __S_ISUID 04000 /* Set user ID on execution. */
  181. #define __S_ISGID 02000 /* Set group ID on execution. */
  182. #define __S_ISVTX 01000 /* Save swapped text after use (sticky). */
  183. #define __S_IREAD 0400 /* Read by owner. */
  184. #define __S_IWRITE 0200 /* Write by owner. */
  185. #define __S_IEXEC 0100 /* Execute by owner. */
  186. #ifdef __USE_ATFILE
  187. # define UTIME_NOW ((1l << 30) - 1l)
  188. # define UTIME_OMIT ((1l << 30) - 2l)
  189. #endif