stat.h 6.3 KB

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  1. /* Copyright (C) 1992, 1995-2002, 2006, 2009 Free Software Foundation, Inc.
  2. The GNU C Library is free software; you can redistribute it and/or
  3. modify it under the terms of the GNU Lesser General Public
  4. License as published by the Free Software Foundation; either
  5. version 2.1 of the License, or (at your option) any later version.
  6. The GNU C Library is distributed in the hope that it will be useful,
  7. but WITHOUT ANY WARRANTY; without even the implied warranty of
  8. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  9. Lesser General Public License for more details.
  10. You should have received a copy of the GNU Lesser General Public
  11. License along with the GNU C Library; if not, see
  12. <http://www.gnu.org/licenses/>. */
  13. #ifndef _SYS_STAT_H
  14. # error "Never include <bits/stat.h> directly; use <sys/stat.h> instead."
  15. #endif
  16. /* Versions of the `struct stat' data structure. */
  17. #define _STAT_VER_LINUX_OLD 1
  18. #define _STAT_VER_KERNEL 1
  19. #define _STAT_VER_SVR4 2
  20. #define _STAT_VER_LINUX 3
  21. #define _STAT_VER _STAT_VER_LINUX /* The one defined below. */
  22. /* 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. struct stat
  27. {
  28. __dev_t st_dev; /* Device. */
  29. __ino64_t st_ino; /* File serial number. */
  30. __mode_t st_mode; /* File mode. */
  31. __nlink_t st_nlink; /* Link count. */
  32. __uid_t st_uid; /* User ID of the file's owner. */
  33. __gid_t st_gid; /* Group ID of the file's group.*/
  34. __dev_t st_rdev; /* Device number, if device. */
  35. unsigned short int __pad2;
  36. #ifndef __USE_FILE_OFFSET64
  37. __off_t st_size; /* Size of file, in bytes. */
  38. #else
  39. __off64_t st_size; /* Size of file, in bytes. */
  40. #endif
  41. __blksize_t st_blksize; /* Optimal block size for I/O. */
  42. #ifndef __USE_FILE_OFFSET64
  43. __blkcnt_t st_blocks; /* Number 512-byte blocks allocated. */
  44. #else
  45. __blkcnt64_t st_blocks; /* Number 512-byte blocks allocated. */
  46. #endif
  47. #ifdef __USE_MISC
  48. /* Nanosecond resolution timestamps are stored in a format
  49. equivalent to 'struct timespec'. This is the type used
  50. whenever possible but the Unix namespace rules do not allow the
  51. identifier 'timespec' to appear in the <sys/stat.h> header.
  52. Therefore we have to handle the use of this header in strictly
  53. standard-compliant sources special. */
  54. struct timespec st_atim; /* Time of last access. */
  55. struct timespec st_mtim; /* Time of last modification. */
  56. struct timespec st_ctim; /* Time of last status change. */
  57. # define st_atime st_atim.tv_sec /* Backward compatibility. */
  58. # define st_mtime st_mtim.tv_sec
  59. # define st_ctime st_ctim.tv_sec
  60. #else
  61. __time_t st_atime; /* Time of last access. */
  62. unsigned long int st_atimensec; /* Nscecs of last access. */
  63. __time_t st_mtime; /* Time of last modification. */
  64. unsigned long int st_mtimensec; /* Nsecs of last modification. */
  65. __time_t st_ctime; /* Time of last status change. */
  66. unsigned long int st_ctimensec; /* Nsecs of last status change. */
  67. #endif
  68. unsigned long int __unused4;
  69. unsigned long int __unused5;
  70. };
  71. #ifdef __USE_LARGEFILE64
  72. struct stat64
  73. {
  74. __dev_t st_dev; /* Device. */
  75. __ino64_t st_ino; /* File serial number. */
  76. __mode_t st_mode; /* File mode. */
  77. __nlink_t st_nlink; /* Link count. */
  78. __uid_t st_uid; /* User ID of the file's owner. */
  79. __gid_t st_gid; /* Group ID of the file's group.*/
  80. __dev_t st_rdev; /* Device number, if device. */
  81. unsigned short int __pad2;
  82. __off64_t st_size; /* Size of file, in bytes. */
  83. __blksize_t st_blksize; /* Optimal block size for I/O. */
  84. __blkcnt64_t st_blocks; /* Number 512-byte blocks allocated. */
  85. #ifdef __USE_MISC
  86. /* Nanosecond resolution timestamps are stored in a format
  87. equivalent to 'struct timespec'. This is the type used
  88. whenever possible but the Unix namespace rules do not allow the
  89. identifier 'timespec' to appear in the <sys/stat.h> header.
  90. Therefore we have to handle the use of this header in strictly
  91. standard-compliant sources special. */
  92. struct timespec st_atim; /* Time of last access. */
  93. struct timespec st_mtim; /* Time of last modification. */
  94. struct timespec st_ctim; /* Time of last status change. */
  95. # define st_atime st_atim.tv_sec /* Backward compatibility. */
  96. # define st_mtime st_mtim.tv_sec
  97. # define st_ctime st_ctim.tv_sec
  98. #else
  99. __time_t st_atime; /* Time of last access. */
  100. unsigned long int st_atimensec; /* Nscecs of last access. */
  101. __time_t st_mtime; /* Time of last modification. */
  102. unsigned long int st_mtimensec; /* Nsecs of last modification. */
  103. __time_t st_ctime; /* Time of last status change. */
  104. unsigned long int st_ctimensec; /* Nsecs of last status change. */
  105. #endif
  106. unsigned long int __unused4;
  107. unsigned long int __unused5;
  108. };
  109. #endif
  110. /* Tell code we have these members. */
  111. #define _STATBUF_ST_BLKSIZE
  112. #define _STATBUF_ST_RDEV
  113. /* Nanosecond resolution time values are supported. */
  114. #define _STATBUF_ST_NSEC
  115. /* Encoding of the file mode. */
  116. #define __S_IFMT 0170000 /* These bits determine file type. */
  117. /* File types. */
  118. #define __S_IFDIR 0040000 /* Directory. */
  119. #define __S_IFCHR 0020000 /* Character device. */
  120. #define __S_IFBLK 0060000 /* Block device. */
  121. #define __S_IFREG 0100000 /* Regular file. */
  122. #define __S_IFIFO 0010000 /* FIFO. */
  123. #define __S_IFLNK 0120000 /* Symbolic link. */
  124. #define __S_IFSOCK 0140000 /* Socket. */
  125. /* POSIX.1b objects. Note that these macros always evaluate to zero. But
  126. they do it by enforcing the correct use of the macros. */
  127. #define __S_TYPEISMQ(buf) ((buf)->st_mode - (buf)->st_mode)
  128. #define __S_TYPEISSEM(buf) ((buf)->st_mode - (buf)->st_mode)
  129. #define __S_TYPEISSHM(buf) ((buf)->st_mode - (buf)->st_mode)
  130. /* Protection bits. */
  131. #define __S_ISUID 04000 /* Set user ID on execution. */
  132. #define __S_ISGID 02000 /* Set group ID on execution. */
  133. #define __S_ISVTX 01000 /* Save swapped text after use (sticky). */
  134. #define __S_IREAD 0400 /* Read by owner. */
  135. #define __S_IWRITE 0200 /* Write by owner. */
  136. #define __S_IEXEC 0100 /* Execute by owner. */
  137. #ifdef __USE_ATFILE
  138. # define UTIME_NOW ((1l << 30) - 1l)
  139. # define UTIME_OMIT ((1l << 30) - 2l)
  140. #endif