stat.h 5.9 KB

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  1. /* Copyright (C) 1999, 2000, 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, 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. #define _STAT_VER_LINUX 1
  21. #define _STAT_VER _STAT_VER_LINUX
  22. /* Versions of the `xmknod' interface. */
  23. #define _MKNOD_VER_LINUX 0
  24. struct stat
  25. {
  26. __dev_t st_dev; /* Device. */
  27. __ino_t st_ino; /* File serial number. */
  28. __nlink_t st_nlink; /* Link count. */
  29. __mode_t st_mode; /* File mode. */
  30. __uid_t st_uid; /* User ID of the file's owner. */
  31. __gid_t st_gid; /* Group ID of the file's group.*/
  32. int pad0;
  33. __dev_t st_rdev; /* Device number, if device. */
  34. __off_t st_size; /* Size of file, in bytes. */
  35. #ifdef __USE_MISC
  36. /* Nanosecond resolution timestamps are stored in a format
  37. equivalent to 'struct timespec'. This is the type used
  38. whenever possible but the Unix namespace rules do not allow the
  39. identifier 'timespec' to appear in the <sys/stat.h> header.
  40. Therefore we have to handle the use of this header in strictly
  41. standard-compliant sources special. */
  42. struct timespec st_atim; /* Time of last access. */
  43. struct timespec st_mtim; /* Time of last modification. */
  44. struct timespec st_ctim; /* Time of last status change. */
  45. # define st_atime st_atim.tv_sec /* Backward compatibility. */
  46. # define st_mtime st_mtim.tv_sec
  47. # define st_ctime st_ctim.tv_sec
  48. #else
  49. __time_t st_atime; /* Time of last access. */
  50. unsigned long int st_atimensec; /* Nscecs of last access. */
  51. __time_t st_mtime; /* Time of last modification. */
  52. unsigned long int st_mtimensec; /* Nsecs of last modification. */
  53. __time_t st_ctime; /* Time of last status change. */
  54. unsigned long int st_ctimensec; /* Nsecs of last status change. */
  55. #endif
  56. __blksize_t st_blksize; /* Optimal block size for I/O. */
  57. __blkcnt_t st_blocks; /* Nr. 512-byte blocks allocated. */
  58. long int __unused[3];
  59. };
  60. #ifdef __USE_LARGEFILE64
  61. /* Note stat64 is the same shape as stat. */
  62. struct stat64
  63. {
  64. __dev_t st_dev; /* Device. */
  65. __ino64_t st_ino; /* File serial number. */
  66. __nlink_t st_nlink; /* Link count. */
  67. __mode_t st_mode; /* File mode. */
  68. __uid_t st_uid; /* User ID of the file's owner. */
  69. __gid_t st_gid; /* Group ID of the file's group.*/
  70. int pad0;
  71. __dev_t st_rdev; /* Device number, if device. */
  72. __off_t st_size; /* Size of file, in bytes. */
  73. #ifdef __USE_MISC
  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. __blksize_t st_blksize; /* Optimal block size for I/O. */
  95. __blkcnt64_t st_blocks; /* Nr. 512-byte blocks allocated. */
  96. long int __unused[3];
  97. };
  98. #endif
  99. /* Tell code we have these members. */
  100. #define _STATBUF_ST_BLKSIZE
  101. #define _STATBUF_ST_RDEV
  102. /* Nanosecond resolution time values are supported. */
  103. #define _STATBUF_ST_NSEC
  104. /* Encoding of the file mode. */
  105. #define __S_IFMT 0170000 /* These bits determine file type. */
  106. /* File types. */
  107. #define __S_IFDIR 0040000 /* Directory. */
  108. #define __S_IFCHR 0020000 /* Character device. */
  109. #define __S_IFBLK 0060000 /* Block device. */
  110. #define __S_IFREG 0100000 /* Regular file. */
  111. #define __S_IFIFO 0010000 /* FIFO. */
  112. #define __S_IFLNK 0120000 /* Symbolic link. */
  113. #define __S_IFSOCK 0140000 /* Socket. */
  114. /* POSIX.1b objects. Note that these macros always evaluate to zero. But
  115. they do it by enforcing the correct use of the macros. */
  116. #define __S_TYPEISMQ(buf) ((buf)->st_mode - (buf)->st_mode)
  117. #define __S_TYPEISSEM(buf) ((buf)->st_mode - (buf)->st_mode)
  118. #define __S_TYPEISSHM(buf) ((buf)->st_mode - (buf)->st_mode)
  119. /* Protection bits. */
  120. #define __S_ISUID 04000 /* Set user ID on execution. */
  121. #define __S_ISGID 02000 /* Set group ID on execution. */
  122. #define __S_ISVTX 01000 /* Save swapped text after use (sticky). */
  123. #define __S_IREAD 0400 /* Read by owner. */
  124. #define __S_IWRITE 0200 /* Write by owner. */
  125. #define __S_IEXEC 0100 /* Execute by owner. */
  126. #ifdef __USE_ATFILE
  127. # define UTIME_NOW ((1l << 30) - 1l)
  128. # define UTIME_OMIT ((1l << 30) - 2l)
  129. #endif