[net-next-2.6.git] / include / linux / posix_types.h

#ifndef _LINUX_POSIX_TYPES_H
#define _LINUX_POSIX_TYPES_H

#include <linux/stddef.h>

/*
 * This allows for 1024 file descriptors: if NR_OPEN is ever grown
 * beyond that you'll have to change this too. But 1024 fd's seem to be
 * enough even for such "real" unices like OSF/1, so hopefully this is
 * one limit that doesn't have to be changed [again].
 *
 * Note that POSIX wants the FD_CLEAR(fd,fdsetp) defines to be in
 * <sys/time.h> (and thus <linux/time.h>) - but this is a more logical
 * place for them. Solved by having dummy defines in <sys/time.h>.
 */

/*
 * Those macros may have been defined in <gnu/types.h>. But we always
 * use the ones here. 
 */
#undef __NFDBITS
#define __NFDBITS	(8 * sizeof(unsigned long))

#undef __FD_SETSIZE
#define __FD_SETSIZE	1024

#undef __FDSET_LONGS
#define __FDSET_LONGS	(__FD_SETSIZE/__NFDBITS)

#undef __FDELT
#define	__FDELT(d)	((d) / __NFDBITS)

#undef __FDMASK
#define	__FDMASK(d)	(1UL << ((d) % __NFDBITS))

typedef struct {
	unsigned long fds_bits [__FDSET_LONGS];
} __kernel_fd_set;

/* Type of a signal handler.  */
typedef void (*__kernel_sighandler_t)(int);

/* Type of a SYSV IPC key.  */
typedef int __kernel_key_t;
typedef int __kernel_mqd_t;

#include <asm/posix_types.h>

#endif /* _LINUX_POSIX_TYPES_H */
Commit	Line	Data
1da177e4 LT	1	#ifndef _LINUX_POSIX_TYPES_H
	2	#define _LINUX_POSIX_TYPES_H
	3
	4	#include <linux/stddef.h>
	5
	6	/*
	7	* This allows for 1024 file descriptors: if NR_OPEN is ever grown
	8	* beyond that you'll have to change this too. But 1024 fd's seem to be
	9	* enough even for such "real" unices like OSF/1, so hopefully this is
	10	* one limit that doesn't have to be changed [again].
	11	*
	12	* Note that POSIX wants the FD_CLEAR(fd,fdsetp) defines to be in
	13	* <sys/time.h> (and thus <linux/time.h>) - but this is a more logical
	14	* place for them. Solved by having dummy defines in <sys/time.h>.
	15	*/
	16
	17	/*
	18	* Those macros may have been defined in <gnu/types.h>. But we always
	19	* use the ones here.
	20	*/
	21	#undef __NFDBITS
	22	#define __NFDBITS (8 * sizeof(unsigned long))
	23
	24	#undef __FD_SETSIZE
	25	#define __FD_SETSIZE 1024
	26
	27	#undef __FDSET_LONGS
	28	#define __FDSET_LONGS (__FD_SETSIZE/__NFDBITS)
	29
	30	#undef __FDELT
	31	#define __FDELT(d) ((d) / __NFDBITS)
	32
	33	#undef __FDMASK
	34	#define __FDMASK(d) (1UL << ((d) % __NFDBITS))
	35
	36	typedef struct {
	37	unsigned long fds_bits [__FDSET_LONGS];
	38	} __kernel_fd_set;
	39
	40	/* Type of a signal handler. */
	41	typedef void (*__kernel_sighandler_t)(int);
	42
	43	/* Type of a SYSV IPC key. */
	44	typedef int __kernel_key_t;
	45	typedef int __kernel_mqd_t;
	46
	47	#include <asm/posix_types.h>
	48
	49	#endif /* _LINUX_POSIX_TYPES_H */