fcntl.h 1.7 KB

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  1. /* SPDX-License-Identifier: GPL-2.0 */
  2. #ifndef _LINUX_FCNTL_H
  3. #define _LINUX_FCNTL_H
  4. #include <linux/stat.h>
  5. #include <uapi/linux/fcntl.h>
  6. /* List of all valid flags for the open/openat flags argument: */
  7. #define VALID_OPEN_FLAGS \
  8. (O_RDONLY | O_WRONLY | O_RDWR | O_CREAT | O_EXCL | O_NOCTTY | O_TRUNC | \
  9. O_APPEND | O_NDELAY | O_NONBLOCK | __O_SYNC | O_DSYNC | \
  10. FASYNC | O_DIRECT | O_LARGEFILE | O_DIRECTORY | O_NOFOLLOW | \
  11. O_NOATIME | O_CLOEXEC | O_PATH | __O_TMPFILE)
  12. /* List of all valid flags for the how->resolve argument: */
  13. #define VALID_RESOLVE_FLAGS \
  14. (RESOLVE_NO_XDEV | RESOLVE_NO_MAGICLINKS | RESOLVE_NO_SYMLINKS | \
  15. RESOLVE_BENEATH | RESOLVE_IN_ROOT | RESOLVE_CACHED)
  16. /* List of all open_how "versions". */
  17. #define OPEN_HOW_SIZE_VER0 24 /* sizeof first published struct */
  18. #define OPEN_HOW_SIZE_LATEST OPEN_HOW_SIZE_VER0
  19. #ifndef force_o_largefile
  20. #define force_o_largefile() (!IS_ENABLED(CONFIG_ARCH_32BIT_OFF_T))
  21. #endif
  22. #if BITS_PER_LONG == 32
  23. #define IS_GETLK32(cmd) ((cmd) == F_GETLK)
  24. #define IS_SETLK32(cmd) ((cmd) == F_SETLK)
  25. #define IS_SETLKW32(cmd) ((cmd) == F_SETLKW)
  26. #define IS_GETLK64(cmd) ((cmd) == F_GETLK64)
  27. #define IS_SETLK64(cmd) ((cmd) == F_SETLK64)
  28. #define IS_SETLKW64(cmd) ((cmd) == F_SETLKW64)
  29. #else
  30. #define IS_GETLK32(cmd) (0)
  31. #define IS_SETLK32(cmd) (0)
  32. #define IS_SETLKW32(cmd) (0)
  33. #define IS_GETLK64(cmd) ((cmd) == F_GETLK)
  34. #define IS_SETLK64(cmd) ((cmd) == F_SETLK)
  35. #define IS_SETLKW64(cmd) ((cmd) == F_SETLKW)
  36. #endif /* BITS_PER_LONG == 32 */
  37. #define IS_GETLK(cmd) (IS_GETLK32(cmd) || IS_GETLK64(cmd))
  38. #define IS_SETLK(cmd) (IS_SETLK32(cmd) || IS_SETLK64(cmd))
  39. #define IS_SETLKW(cmd) (IS_SETLKW32(cmd) || IS_SETLKW64(cmd))
  40. #endif