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