stat.h 6.4 KB

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  1. /* Copyright (C) 1992, 1995-2001, 2002, 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_LINUX_OLD 1
  19. #define _STAT_VER_KERNEL 1
  20. #define _STAT_VER_SVR4 2
  21. #define _STAT_VER_LINUX 3
  22. #define _STAT_VER _STAT_VER_LINUX /* The one defined below. */
  23. /* 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. struct stat
  28. {
  29. __dev_t st_dev; /* Device. */
  30. #ifndef __USE_FILE_OFFSET64
  31. unsigned short int __pad1;
  32. __ino_t st_ino; /* File serial number. */
  33. #else
  34. unsigned int __pad1;
  35. __ino_t __st_ino; /* 32bit file serial number. */
  36. #endif
  37. __mode_t st_mode; /* File mode. */
  38. __nlink_t st_nlink; /* Link count. */
  39. __uid_t st_uid; /* User ID of the file's owner. */
  40. __gid_t st_gid; /* Group ID of the file's group.*/
  41. __dev_t st_rdev; /* Device number, if device. */
  42. #ifndef __USE_FILE_OFFSET64
  43. unsigned short int __pad2;
  44. __off_t st_size; /* Size of file, in bytes. */
  45. #else
  46. unsigned int __pad2;
  47. __off64_t st_size; /* Size of file, in bytes. */
  48. #endif
  49. __blksize_t st_blksize; /* Optimal block size for I/O. */
  50. #ifndef __USE_FILE_OFFSET64
  51. __blkcnt_t st_blocks; /* Number 512-byte blocks allocated. */
  52. #else
  53. __blkcnt64_t st_blocks; /* Number 512-byte blocks allocated. */
  54. #endif
  55. #ifdef __USE_MISC
  56. /* Nanosecond resolution timestamps are stored in a format
  57. equivalent to 'struct timespec'. This is the type used
  58. whenever possible but the Unix namespace rules do not allow the
  59. identifier 'timespec' to appear in the <sys/stat.h> header.
  60. Therefore we have to handle the use of this header in strictly
  61. standard-compliant sources special. */
  62. struct timespec st_atim; /* Time of last access. */
  63. struct timespec st_mtim; /* Time of last modification. */
  64. struct timespec st_ctim; /* Time of last status change. */
  65. # define st_atime st_atim.tv_sec /* Backward compatibility. */
  66. # define st_mtime st_mtim.tv_sec
  67. # define st_ctime st_ctim.tv_sec
  68. #else
  69. __time_t st_atime; /* Time of last access. */
  70. unsigned long int st_atimensec; /* Nscecs of last access. */
  71. __time_t st_mtime; /* Time of last modification. */
  72. unsigned long int st_mtimensec; /* Nsecs of last modification. */
  73. __time_t st_ctime; /* Time of last status change. */
  74. unsigned long int st_ctimensec; /* Nsecs of last status change. */
  75. #endif
  76. #ifndef __USE_FILE_OFFSET64
  77. unsigned long int __unused4;
  78. unsigned long int __unused5;
  79. #else
  80. __ino64_t st_ino; /* File serial number. */
  81. #endif
  82. };
  83. #ifdef __USE_LARGEFILE64
  84. struct stat64
  85. {
  86. __dev_t st_dev; /* Device. */
  87. unsigned int __pad1;
  88. __ino_t __st_ino; /* 32bit file serial number. */
  89. __mode_t st_mode; /* File mode. */
  90. __nlink_t st_nlink; /* Link count. */
  91. __uid_t st_uid; /* User ID of the file's owner. */
  92. __gid_t st_gid; /* Group ID of the file's group.*/
  93. __dev_t st_rdev; /* Device number, if device. */
  94. unsigned int __pad2;
  95. __off64_t st_size; /* Size of file, in bytes. */
  96. __blksize_t st_blksize; /* Optimal block size for I/O. */
  97. __blkcnt64_t st_blocks; /* Number 512-byte blocks allocated. */
  98. #ifdef __USE_MISC
  99. /* Nanosecond resolution timestamps are stored in a format
  100. equivalent to 'struct timespec'. This is the type used
  101. whenever possible but the Unix namespace rules do not allow the
  102. identifier 'timespec' to appear in the <sys/stat.h> header.
  103. Therefore we have to handle the use of this header in strictly
  104. standard-compliant sources special. */
  105. struct timespec st_atim; /* Time of last access. */
  106. struct timespec st_mtim; /* Time of last modification. */
  107. struct timespec st_ctim; /* Time of last status change. */
  108. #else
  109. __time_t st_atime; /* Time of last access. */
  110. unsigned long int st_atimensec; /* Nscecs of last access. */
  111. __time_t st_mtime; /* Time of last modification. */
  112. unsigned long int st_mtimensec; /* Nsecs of last modification. */
  113. __time_t st_ctime; /* Time of last status change. */
  114. unsigned long int st_ctimensec; /* Nsecs of last status change. */
  115. #endif
  116. __ino64_t st_ino; /* File serial number. */
  117. };
  118. #endif
  119. /* Tell code we have these members. */
  120. #define _STATBUF_ST_BLKSIZE
  121. #define _STATBUF_ST_RDEV
  122. /* Nanosecond resolution time values are supported. */
  123. #define _STATBUF_ST_NSEC
  124. /* Encoding of the file mode. */
  125. #define __S_IFMT 0170000 /* These bits determine file type. */
  126. /* File types. */
  127. #define __S_IFDIR 0040000 /* Directory. */
  128. #define __S_IFCHR 0020000 /* Character device. */
  129. #define __S_IFBLK 0060000 /* Block device. */
  130. #define __S_IFREG 0100000 /* Regular file. */
  131. #define __S_IFIFO 0010000 /* FIFO. */
  132. #define __S_IFLNK 0120000 /* Symbolic link. */
  133. #define __S_IFSOCK 0140000 /* Socket. */
  134. /* POSIX.1b objects. Note that these macros always evaluate to zero. But
  135. they do it by enforcing the correct use of the macros. */
  136. #define __S_TYPEISMQ(buf) ((buf)->st_mode - (buf)->st_mode)
  137. #define __S_TYPEISSEM(buf) ((buf)->st_mode - (buf)->st_mode)
  138. #define __S_TYPEISSHM(buf) ((buf)->st_mode - (buf)->st_mode)
  139. /* Protection bits. */
  140. #define __S_ISUID 04000 /* Set user ID on execution. */
  141. #define __S_ISGID 02000 /* Set group ID on execution. */
  142. #define __S_ISVTX 01000 /* Save swapped text after use (sticky). */
  143. #define __S_IREAD 0400 /* Read by owner. */
  144. #define __S_IWRITE 0200 /* Write by owner. */
  145. #define __S_IEXEC 0100 /* Execute by owner. */
  146. #ifdef __USE_ATFILE
  147. # define UTIME_NOW ((1l << 30) - 1l)
  148. # define UTIME_OMIT ((1l << 30) - 2l)
  149. #endif