fcntl.h 2.2 KB

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  1. /* O_*, F_*, FD_* bit values for Linux/x86.
  2. Copyright (C) 2001-2016 Free Software Foundation, Inc.
  3. This file is part of the GNU C Library.
  4. The GNU C Library is free software; you can redistribute it and/or
  5. modify it under the terms of the GNU Lesser General Public
  6. License as published by the Free Software Foundation; either
  7. version 2.1 of the License, or (at your option) any later version.
  8. The GNU C Library is distributed in the hope that it will be useful,
  9. but WITHOUT ANY WARRANTY; without even the implied warranty of
  10. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  11. Lesser General Public License for more details.
  12. You should have received a copy of the GNU Lesser General Public
  13. License along with the GNU C Library; if not, see
  14. <http://www.gnu.org/licenses/>. */
  15. #ifndef _FCNTL_H
  16. # error "Never use <bits/fcntl.h> directly; include <fcntl.h> instead."
  17. #endif
  18. #ifdef __x86_64__
  19. # define __O_LARGEFILE 0
  20. #endif
  21. #ifdef __x86_64__
  22. /* Not necessary, we always have 64-bit offsets. */
  23. # define F_GETLK64 5 /* Get record locking info. */
  24. # define F_SETLK64 6 /* Set record locking info (non-blocking). */
  25. # define F_SETLKW64 7 /* Set record locking info (blocking). */
  26. #endif
  27. struct flock
  28. {
  29. short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */
  30. short int l_whence; /* Where `l_start' is relative to (like `lseek'). */
  31. #ifndef __USE_FILE_OFFSET64
  32. __off_t l_start; /* Offset where the lock begins. */
  33. __off_t l_len; /* Size of the locked area; zero means until EOF. */
  34. #else
  35. __off64_t l_start; /* Offset where the lock begins. */
  36. __off64_t l_len; /* Size of the locked area; zero means until EOF. */
  37. #endif
  38. __pid_t l_pid; /* Process holding the lock. */
  39. };
  40. #ifdef __USE_LARGEFILE64
  41. struct flock64
  42. {
  43. short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */
  44. short int l_whence; /* Where `l_start' is relative to (like `lseek'). */
  45. __off64_t l_start; /* Offset where the lock begins. */
  46. __off64_t l_len; /* Size of the locked area; zero means until EOF. */
  47. __pid_t l_pid; /* Process holding the lock. */
  48. };
  49. #endif
  50. /* Include generic Linux declarations. */
  51. #include <bits/fcntl-linux.h>