stat.h 7.6 KB

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  1. /* Copyright (C) 1999-2003,2009,2010 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. #if !defined _SYS_STAT_H && !defined _FCNTL_H
  16. # error "Never include <bits/stat.h> directly; use <sys/stat.h> instead."
  17. #endif
  18. #ifndef _BITS_STAT_H
  19. #define _BITS_STAT_H 1
  20. /* Versions of the `struct stat' data structure. */
  21. #define _STAT_VER_KERNEL 0
  22. #if __WORDSIZE == 32
  23. # define _STAT_VER_SVR4 2
  24. # define _STAT_VER_LINUX 3
  25. /* i386 versions of the `xmknod' interface. */
  26. # define _MKNOD_VER_LINUX 1
  27. # define _MKNOD_VER_SVR4 2
  28. # define _MKNOD_VER _MKNOD_VER_LINUX /* The bits defined below. */
  29. #else
  30. # define _STAT_VER_LINUX 1
  31. /* x86-64 versions of the `xmknod' interface. */
  32. # define _MKNOD_VER_LINUX 0
  33. #endif
  34. #define _STAT_VER _STAT_VER_LINUX
  35. struct stat
  36. {
  37. __dev_t st_dev; /* Device. */
  38. #if __WORDSIZE == 32
  39. unsigned short int __pad1;
  40. #endif
  41. #if __WORDSIZE == 64 || !defined __USE_FILE_OFFSET64
  42. __ino_t st_ino; /* File serial number. */
  43. #else
  44. __ino_t __st_ino; /* 32bit file serial number. */
  45. #endif
  46. #if __WORDSIZE == 32
  47. __mode_t st_mode; /* File mode. */
  48. __nlink_t st_nlink; /* Link count. */
  49. #else
  50. __nlink_t st_nlink; /* Link count. */
  51. __mode_t st_mode; /* File mode. */
  52. #endif
  53. __uid_t st_uid; /* User ID of the file's owner. */
  54. __gid_t st_gid; /* Group ID of the file's group.*/
  55. #if __WORDSIZE == 64
  56. int __pad0;
  57. #endif
  58. __dev_t st_rdev; /* Device number, if device. */
  59. #if __WORDSIZE == 32
  60. unsigned short int __pad2;
  61. #endif
  62. #if __WORDSIZE == 64 || !defined __USE_FILE_OFFSET64
  63. __off_t st_size; /* Size of file, in bytes. */
  64. #else
  65. __off64_t st_size; /* Size of file, in bytes. */
  66. #endif
  67. __blksize_t st_blksize; /* Optimal block size for I/O. */
  68. #if __WORDSIZE == 64 || !defined __USE_FILE_OFFSET64
  69. __blkcnt_t st_blocks; /* Number 512-byte blocks allocated. */
  70. #else
  71. __blkcnt64_t st_blocks; /* Number 512-byte blocks allocated. */
  72. #endif
  73. #if defined __USE_MISC || defined __USE_XOPEN2K8
  74. /* Nanosecond resolution timestamps are stored in a format
  75. equivalent to 'struct timespec'. This is the type used
  76. whenever possible but the Unix namespace rules do not allow the
  77. identifier 'timespec' to appear in the <sys/stat.h> header.
  78. Therefore we have to handle the use of this header in strictly
  79. standard-compliant sources special. */
  80. struct timespec st_atim; /* Time of last access. */
  81. struct timespec st_mtim; /* Time of last modification. */
  82. struct timespec st_ctim; /* Time of last status change. */
  83. # define st_atime st_atim.tv_sec /* Backward compatibility. */
  84. # define st_mtime st_mtim.tv_sec
  85. # define st_ctime st_ctim.tv_sec
  86. #else
  87. __time_t st_atime; /* Time of last access. */
  88. unsigned long int st_atimensec; /* Nscecs of last access. */
  89. __time_t st_mtime; /* Time of last modification. */
  90. unsigned long int st_mtimensec; /* Nsecs of last modification. */
  91. __time_t st_ctime; /* Time of last status change. */
  92. unsigned long int st_ctimensec; /* Nsecs of last status change. */
  93. #endif
  94. #if __WORDSIZE == 64
  95. long int __unused[3];
  96. #else
  97. # ifndef __USE_FILE_OFFSET64
  98. unsigned long int __unused4;
  99. unsigned long int __unused5;
  100. # else
  101. __ino64_t st_ino; /* File serial number. */
  102. # endif
  103. #endif
  104. };
  105. #ifdef __USE_LARGEFILE64
  106. /* Note stat64 has the same shape as stat for x86-64. */
  107. struct stat64
  108. {
  109. __dev_t st_dev; /* Device. */
  110. # if __WORDSIZE == 64
  111. __ino64_t st_ino; /* File serial number. */
  112. __nlink_t st_nlink; /* Link count. */
  113. __mode_t st_mode; /* File mode. */
  114. # else
  115. unsigned int __pad1;
  116. __ino_t __st_ino; /* 32bit file serial number. */
  117. __mode_t st_mode; /* File mode. */
  118. __nlink_t st_nlink; /* Link count. */
  119. # endif
  120. __uid_t st_uid; /* User ID of the file's owner. */
  121. __gid_t st_gid; /* Group ID of the file's group.*/
  122. # if __WORDSIZE == 64
  123. int __pad0;
  124. __dev_t st_rdev; /* Device number, if device. */
  125. __off_t st_size; /* Size of file, in bytes. */
  126. # else
  127. __dev_t st_rdev; /* Device number, if device. */
  128. unsigned int __pad2;
  129. __off64_t st_size; /* Size of file, in bytes. */
  130. # endif
  131. __blksize_t st_blksize; /* Optimal block size for I/O. */
  132. __blkcnt64_t st_blocks; /* Nr. 512-byte blocks allocated. */
  133. # if defined __USE_MISC || defined __USE_XOPEN2K8
  134. /* Nanosecond resolution timestamps are stored in a format
  135. equivalent to 'struct timespec'. This is the type used
  136. whenever possible but the Unix namespace rules do not allow the
  137. identifier 'timespec' to appear in the <sys/stat.h> header.
  138. Therefore we have to handle the use of this header in strictly
  139. standard-compliant sources special. */
  140. struct timespec st_atim; /* Time of last access. */
  141. struct timespec st_mtim; /* Time of last modification. */
  142. struct timespec st_ctim; /* Time of last status change. */
  143. # define st_atime st_atim.tv_sec /* Backward compatibility. */
  144. # define st_mtime st_mtim.tv_sec
  145. # define st_ctime st_ctim.tv_sec
  146. # else
  147. __time_t st_atime; /* Time of last access. */
  148. unsigned long int st_atimensec; /* Nscecs of last access. */
  149. __time_t st_mtime; /* Time of last modification. */
  150. unsigned long int st_mtimensec; /* Nsecs of last modification. */
  151. __time_t st_ctime; /* Time of last status change. */
  152. unsigned long int st_ctimensec; /* Nsecs of last status change. */
  153. # endif
  154. # if __WORDSIZE == 64
  155. long int __unused[3];
  156. # else
  157. __ino64_t st_ino; /* File serial number. */
  158. # endif
  159. };
  160. #endif
  161. /* Tell code we have these members. */
  162. #define _STATBUF_ST_BLKSIZE
  163. #define _STATBUF_ST_RDEV
  164. /* Nanosecond resolution time values are supported. */
  165. #define _STATBUF_ST_NSEC
  166. /* Encoding of the file mode. */
  167. #define __S_IFMT 0170000 /* These bits determine file type. */
  168. /* File types. */
  169. #define __S_IFDIR 0040000 /* Directory. */
  170. #define __S_IFCHR 0020000 /* Character device. */
  171. #define __S_IFBLK 0060000 /* Block device. */
  172. #define __S_IFREG 0100000 /* Regular file. */
  173. #define __S_IFIFO 0010000 /* FIFO. */
  174. #define __S_IFLNK 0120000 /* Symbolic link. */
  175. #define __S_IFSOCK 0140000 /* Socket. */
  176. /* POSIX.1b objects. Note that these macros always evaluate to zero. But
  177. they do it by enforcing the correct use of the macros. */
  178. #define __S_TYPEISMQ(buf) ((buf)->st_mode - (buf)->st_mode)
  179. #define __S_TYPEISSEM(buf) ((buf)->st_mode - (buf)->st_mode)
  180. #define __S_TYPEISSHM(buf) ((buf)->st_mode - (buf)->st_mode)
  181. /* Protection bits. */
  182. #define __S_ISUID 04000 /* Set user ID on execution. */
  183. #define __S_ISGID 02000 /* Set group ID on execution. */
  184. #define __S_ISVTX 01000 /* Save swapped text after use (sticky). */
  185. #define __S_IREAD 0400 /* Read by owner. */
  186. #define __S_IWRITE 0200 /* Write by owner. */
  187. #define __S_IEXEC 0100 /* Execute by owner. */
  188. #ifdef __USE_ATFILE
  189. # define UTIME_NOW ((1l << 30) - 1l)
  190. # define UTIME_OMIT ((1l << 30) - 2l)
  191. #endif
  192. #endif /* bits/stat.h */