fcntl.h 9.1 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247
  1. /* O_*, F_*, FD_* bit values for Linux/SPARC64.
  2. Copyright (C) 1995-2017 Free Software Foundation, Inc.
  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 _FCNTL_H
  15. # error "Never use <bits/fcntl.h> directly; include <fcntl.h> instead."
  16. #endif
  17. #include <sys/types.h>
  18. #ifdef __USE_GNU
  19. # include <bits/uio.h>
  20. #endif
  21. /* open/fcntl - O_SYNC is only implemented on blocks devices and on files
  22. located on an ext2 file system */
  23. #define O_RDONLY 0x0000
  24. #define O_WRONLY 0x0001
  25. #define O_RDWR 0x0002
  26. #define O_ACCMODE 0x0003
  27. #define O_APPEND 0x0008
  28. #define O_ASYNC 0x0040
  29. #define O_CREAT 0x0200 /* not fcntl */
  30. #define O_TRUNC 0x0400 /* not fcntl */
  31. #define O_EXCL 0x0800 /* not fcntl */
  32. #define O_SYNC 0x2000
  33. #define O_NONBLOCK 0x4000
  34. #define O_NDELAY (0x0004 | O_NONBLOCK)
  35. #define O_NOCTTY 0x8000 /* not fcntl */
  36. #ifdef __USE_GNU
  37. # define O_DIRECTORY 0x10000 /* must be a directory */
  38. # define O_NOFOLLOW 0x20000 /* don't follow links */
  39. # define O_DIRECT 0x100000 /* direct disk access hint */
  40. # define O_NOATIME 0x200000 /* Do not set atime. */
  41. # define O_CLOEXEC 0x400000 /* Set close_on_exit. */
  42. # define O_PATH 0x1000000 /* Resolve pathname but do not open file. */
  43. #endif
  44. #ifdef __USE_LARGEFILE64
  45. # define O_LARGEFILE 0
  46. #endif
  47. /* For now Linux has no synchronisity options for data and read
  48. operations. We define the symbols here but let them do the same as
  49. O_SYNC since this is a superset. */
  50. #if defined __USE_POSIX199309 || defined __USE_UNIX98
  51. # define O_DSYNC O_SYNC /* Synchronize data. */
  52. # define O_RSYNC O_SYNC /* Synchronize read operations. */
  53. #endif
  54. /* For now Linux has synchronisity options for data and read operations.
  55. We define the symbols here but let them do the same as O_SYNC since
  56. this is a superset. */
  57. #if defined __USE_POSIX199309 || defined __USE_UNIX98
  58. # define O_DSYNC O_SYNC /* Synchronize data. */
  59. # define O_RSYNC O_SYNC /* Synchronize read operations. */
  60. #endif
  61. /* Values for the second argument to `fcntl'. */
  62. #define F_DUPFD 0 /* Duplicate file descriptor. */
  63. #define F_GETFD 1 /* Get file descriptor flags. */
  64. #define F_SETFD 2 /* Set file descriptor flags. */
  65. #define F_GETFL 3 /* Get file status flags. */
  66. #define F_SETFL 4 /* Set file status flags. */
  67. #if defined __USE_BSD || defined __USE_UNIX98
  68. # define F_GETOWN 5 /* Get owner of socket (receiver of SIGIO). */
  69. # define F_SETOWN 6 /* Set owner of socket (receiver of SIGIO). */
  70. #endif
  71. #ifndef __USE_FILE_OFFSET64
  72. # define F_GETLK 7 /* Get record locking info. */
  73. # define F_SETLK 8 /* Set record locking info (non-blocking). */
  74. # define F_SETLKW 9 /* Set record locking info (blocking). */
  75. #else
  76. # define F_GETLK F_GETLK64 /* Get record locking info. */
  77. # define F_SETLK F_SETLK64 /* Set record locking info (non-blocking).*/
  78. # define F_SETLKW F_SETLKW64 /* Set record locking info (blocking). */
  79. #endif
  80. #ifdef __USE_GNU
  81. # define F_SETSIG 10 /* Set number of signal to be sent. */
  82. # define F_GETSIG 11 /* Get number of signal to be sent. */
  83. #endif
  84. #ifdef __USE_GNU
  85. # define F_SETLEASE 1024 /* Set a lease. */
  86. # define F_GETLEASE 1025 /* Enquire what lease is active. */
  87. # define F_NOTIFY 1026 /* Request notfications on a directory. */
  88. # define F_DUPFD_CLOEXEC 1030 /* Duplicate file descriptor with
  89. close-on-exit set on new fd. */
  90. # define F_SETPIPE_SZ 1031 /* Set pipe page size array. */
  91. # define F_GETPIPE_SZ 1032 /* Get pipe page size array. */
  92. #endif
  93. #define F_GETLK64 7 /* Get record locking info. */
  94. #define F_SETLK64 8 /* Set record locking info (non-blocking). */
  95. #define F_SETLKW64 9 /* Set record locking info (blocking). */
  96. /* for F_[GET|SET]FD */
  97. #define FD_CLOEXEC 1 /* actually anything with low bit set goes */
  98. /* For posix fcntl() and `l_type' field of a `struct flock' for lockf(). */
  99. #define F_RDLCK 1 /* Read lock. */
  100. #define F_WRLCK 2 /* Write lock. */
  101. #define F_UNLCK 3 /* Remove lock. */
  102. /* for old implementation of bsd flock () */
  103. #define F_EXLCK 4 /* or 3 */
  104. #define F_SHLCK 8 /* or 4 */
  105. #ifdef __USE_BSD
  106. /* Operations for bsd flock(), also used by the kernel implementation */
  107. # define LOCK_SH 1 /* shared lock */
  108. # define LOCK_EX 2 /* exclusive lock */
  109. # define LOCK_NB 4 /* or'd with one of the above to prevent
  110. blocking */
  111. # define LOCK_UN 8 /* remove lock */
  112. #endif
  113. #ifdef __USE_GNU
  114. # define LOCK_MAND 32 /* This is a mandatory flock: */
  115. # define LOCK_READ 64 /* ... which allows concurrent read operations. */
  116. # define LOCK_WRITE 128 /* ... which allows concurrent write operations. */
  117. # define LOCK_RW 192 /* ... Which allows concurrent read & write operations. */
  118. #endif
  119. #ifdef __USE_GNU
  120. /* Types of directory notifications that may be requested with F_NOTIFY. */
  121. # define DN_ACCESS 0x00000001 /* File accessed. */
  122. # define DN_MODIFY 0x00000002 /* File modified. */
  123. # define DN_CREATE 0x00000004 /* File created. */
  124. # define DN_DELETE 0x00000008 /* File removed. */
  125. # define DN_RENAME 0x00000010 /* File renamed. */
  126. # define DN_ATTRIB 0x00000020 /* File changed attibutes. */
  127. # define DN_MULTISHOT 0x80000000 /* Don't remove notifier. */
  128. #endif
  129. struct flock
  130. {
  131. short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */
  132. short int l_whence; /* Where `l_start' is relative to (like `lseek'). */
  133. #ifndef __USE_FILE_OFFSET64
  134. __off_t l_start; /* Offset where the lock begins. */
  135. __off_t l_len; /* Size of the locked area; zero means until EOF. */
  136. #else
  137. __off64_t l_start; /* Offset where the lock begins. */
  138. __off64_t l_len; /* Size of the locked area; zero means until EOF. */
  139. #endif
  140. __pid_t l_pid; /* Process holding the lock. */
  141. short int __unused;
  142. };
  143. #ifdef __USE_LARGEFILE64
  144. struct flock64
  145. {
  146. short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */
  147. short int l_whence; /* Where `l_start' is relative to (like `lseek'). */
  148. __off64_t l_start; /* Offset where the lock begins. */
  149. __off64_t l_len; /* Size of the locked area; zero means until EOF. */
  150. __pid_t l_pid; /* Process holding the lock. */
  151. short int __unused;
  152. };
  153. #endif
  154. /* Define some more compatibility macros to be backward compatible with
  155. BSD systems which did not managed to hide these kernel macros. */
  156. #ifdef __USE_BSD
  157. # define FAPPEND O_APPEND
  158. # define FFSYNC O_FSYNC
  159. # define FASYNC O_ASYNC
  160. # define FNONBLOCK O_NONBLOCK
  161. # define FNDELAY O_NDELAY
  162. #endif /* Use BSD. */
  163. /* Advise to `posix_fadvise'. */
  164. #ifdef __USE_XOPEN2K
  165. # define POSIX_FADV_NORMAL 0 /* No further special treatment. */
  166. # define POSIX_FADV_RANDOM 1 /* Expect random page references. */
  167. # define POSIX_FADV_SEQUENTIAL 2 /* Expect sequential page references. */
  168. # define POSIX_FADV_WILLNEED 3 /* Will need these pages. */
  169. # define POSIX_FADV_DONTNEED 4 /* Don't need these pages. */
  170. # define POSIX_FADV_NOREUSE 5 /* Data will be accessed once. */
  171. #endif
  172. #if defined __USE_GNU && defined __UCLIBC_LINUX_SPECIFIC__
  173. /* Flags for SYNC_FILE_RANGE. */
  174. # define SYNC_FILE_RANGE_WAIT_BEFORE 1 /* Wait upon writeout of all pages
  175. in the range before performing the
  176. write. */
  177. # define SYNC_FILE_RANGE_WRITE 2 /* Initiate writeout of all those
  178. dirty pages in the range which are
  179. not presently under writeback. */
  180. # define SYNC_FILE_RANGE_WAIT_AFTER 4 /* Wait upon writeout of all pages in
  181. the range after performing the
  182. write. */
  183. /* Flags for SPLICE and VMSPLICE. */
  184. # define SPLICE_F_MOVE 1 /* Move pages instead of copying. */
  185. # define SPLICE_F_NONBLOCK 2 /* Don't block on the pipe splicing
  186. (but we may still block on the fd
  187. we splice from/to). */
  188. # define SPLICE_F_MORE 4 /* Expect more data. */
  189. # define SPLICE_F_GIFT 8 /* Pages passed in are a gift. */
  190. #endif
  191. __BEGIN_DECLS
  192. #if defined __USE_GNU && defined __UCLIBC_LINUX_SPECIFIC__
  193. /* Provide kernel hint to read ahead. */
  194. extern ssize_t readahead (int __fd, __off64_t __offset, size_t __count)
  195. __THROW;
  196. /* Selective file content synch'ing. */
  197. extern int sync_file_range (int __fd, __off64_t __from, __off64_t __to,
  198. unsigned int __flags);
  199. /* Splice address range into a pipe. */
  200. extern ssize_t vmsplice (int __fdout, const struct iovec *__iov,
  201. size_t __count, unsigned int __flags);
  202. /* Splice two files together. */
  203. extern ssize_t splice (int __fdin, __off64_t *__offin, int __fdout,
  204. __off64_t *__offout, size_t __len,
  205. unsigned int __flags);
  206. /* In-kernel implementation of tee for pipe buffers. */
  207. extern ssize_t tee (int __fdin, int __fdout, size_t __len,
  208. unsigned int __flags);
  209. #endif
  210. __END_DECLS