posix_types.h 1.2 KB

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  1. #ifndef _LINUX_POSIX_TYPES_H
  2. #define _LINUX_POSIX_TYPES_H
  3. #include <linux/stddef.h>
  4. /*
  5. * This allows for 1024 file descriptors: if NR_OPEN is ever grown
  6. * beyond that you'll have to change this too. But 1024 fd's seem to be
  7. * enough even for such "real" unices like OSF/1, so hopefully this is
  8. * one limit that doesn't have to be changed [again].
  9. *
  10. * Note that POSIX wants the FD_CLEAR(fd,fdsetp) defines to be in
  11. * <sys/time.h> (and thus <linux/time.h>) - but this is a more logical
  12. * place for them. Solved by having dummy defines in <sys/time.h>.
  13. */
  14. /*
  15. * Those macros may have been defined in <gnu/types.h>. But we always
  16. * use the ones here.
  17. */
  18. #undef __NFDBITS
  19. #define __NFDBITS (8 * sizeof(unsigned long))
  20. #undef __FD_SETSIZE
  21. #define __FD_SETSIZE 1024
  22. #undef __FDSET_LONGS
  23. #define __FDSET_LONGS (__FD_SETSIZE/__NFDBITS)
  24. #undef __FDELT
  25. #define __FDELT(d) ((d) / __NFDBITS)
  26. #undef __FDMASK
  27. #define __FDMASK(d) (1UL << ((d) % __NFDBITS))
  28. typedef struct {
  29. unsigned long fds_bits [__FDSET_LONGS];
  30. } __kernel_fd_set;
  31. /* Type of a signal handler. */
  32. typedef void (*__kernel_sighandler_t)(int);
  33. /* Type of a SYSV IPC key. */
  34. typedef int __kernel_key_t;
  35. #include <asm/posix_types.h>
  36. #endif /* _LINUX_POSIX_TYPES_H */