posix_types.h

嵌入式系统设计与实例开发源码

#ifndef __ARCH_PARISC_POSIX_TYPES_H
#define __ARCH_PARISC_POSIX_TYPES_H

/*
 * This file is generally used by user-level software, so you need to
 * be a little careful about namespace pollution etc.  Also, we cannot
 * assume GCC is being used.
 */
typedef unsigned int		__kernel_dev_t;
typedef unsigned long		__kernel_ino_t;
typedef unsigned short		__kernel_mode_t;
typedef unsigned short		__kernel_nlink_t;
typedef long			__kernel_off_t;
typedef int			__kernel_pid_t;
typedef unsigned short		__kernel_ipc_pid_t;
typedef unsigned int		__kernel_uid_t;
typedef unsigned int		__kernel_gid_t;
typedef int			__kernel_suseconds_t;
typedef int			__kernel_clock_t;
typedef int			__kernel_daddr_t;
/* Note these change from narrow to wide kernels */
typedef unsigned long		__kernel_size_t;
typedef long			__kernel_ssize_t;
typedef long			__kernel_ptrdiff_t;
typedef long			__kernel_time_t;
typedef char *			__kernel_caddr_t;

typedef unsigned short		__kernel_uid16_t;
typedef unsigned short		__kernel_gid16_t;
typedef unsigned int		__kernel_uid32_t;
typedef unsigned int		__kernel_gid32_t;

#ifdef __GNUC__
typedef long long		__kernel_loff_t;
typedef long long		__kernel_off64_t;
typedef unsigned long long	__kernel_ino64_t;
#endif

typedef struct {
#if defined(__KERNEL__) || defined(__USE_ALL)
	int	val[2];
#else /* !defined(__KERNEL__) && !defined(__USE_ALL) */
	int	__val[2];
#endif /* !defined(__KERNEL__) && !defined(__USE_ALL) */
} __kernel_fsid_t;

#if defined(__KERNEL__) && defined(__LP64__)
/* Now 32bit compatibility types */
typedef unsigned int		__kernel_dev_t32;
typedef unsigned int		__kernel_ino_t32;
typedef unsigned short		__kernel_mode_t32;
typedef unsigned short		__kernel_nlink_t32;
typedef int			__kernel_off_t32;
typedef int			__kernel_pid_t32;
typedef unsigned short		__kernel_ipc_pid_t32;
typedef unsigned int		__kernel_uid_t32;
typedef unsigned int		__kernel_gid_t32;
typedef unsigned int		__kernel_size_t32;
typedef int			__kernel_ssize_t32;
typedef int			__kernel_ptrdiff_t32;
typedef int			__kernel_time_t32;
typedef int			__kernel_suseconds_t32;
typedef int			__kernel_clock_t32;
typedef int			__kernel_daddr_t32;
typedef unsigned int		__kernel_caddr_t32;
#endif

#if defined(__KERNEL__) || !defined(__GLIBC__) || (__GLIBC__ < 2)

#undef __FD_SET
static __inline__ void __FD_SET(unsigned long __fd, __kernel_fd_set *__fdsetp)
{
	unsigned long __tmp = __fd / __NFDBITS;
	unsigned long __rem = __fd % __NFDBITS;
	__fdsetp->fds_bits[__tmp] |= (1UL<<__rem);
}

#undef __FD_CLR
static __inline__ void __FD_CLR(unsigned long __fd, __kernel_fd_set *__fdsetp)
{
	unsigned long __tmp = __fd / __NFDBITS;
	unsigned long __rem = __fd % __NFDBITS;
	__fdsetp->fds_bits[__tmp] &= ~(1UL<<__rem);
}

#undef __FD_ISSET
static __inline__ int __FD_ISSET(unsigned long __fd, const __kernel_fd_set *__p)
{ 
	unsigned long __tmp = __fd / __NFDBITS;
	unsigned long __rem = __fd % __NFDBITS;
	return (__p->fds_bits[__tmp] & (1UL<<__rem)) != 0;
}

/*
 * This will unroll the loop for the normal constant case (8 ints,
 * for a 256-bit fd_set)
 */
#undef __FD_ZERO
static __inline__ void __FD_ZERO(__kernel_fd_set *__p)
{
	unsigned long *__tmp = __p->fds_bits;
	int __i;

	if (__builtin_constant_p(__FDSET_LONGS)) {
		switch (__FDSET_LONGS) {
		case 16:
			__tmp[ 0] = 0; __tmp[ 1] = 0;
			__tmp[ 2] = 0; __tmp[ 3] = 0;
			__tmp[ 4] = 0; __tmp[ 5] = 0;
			__tmp[ 6] = 0; __tmp[ 7] = 0;
			__tmp[ 8] = 0; __tmp[ 9] = 0;
			__tmp[10] = 0; __tmp[11] = 0;
			__tmp[12] = 0; __tmp[13] = 0;
			__tmp[14] = 0; __tmp[15] = 0;
			return;

		case 8:
			__tmp[ 0] = 0; __tmp[ 1] = 0;
			__tmp[ 2] = 0; __tmp[ 3] = 0;
			__tmp[ 4] = 0; __tmp[ 5] = 0;
			__tmp[ 6] = 0; __tmp[ 7] = 0;
			return;

		case 4:
			__tmp[ 0] = 0; __tmp[ 1] = 0;
			__tmp[ 2] = 0; __tmp[ 3] = 0;
			return;
		}
	}
	__i = __FDSET_LONGS;
	while (__i) {
		__i--;
		*__tmp = 0;
		__tmp++;
	}
}

#endif /* defined(__KERNEL__) || !defined(__GLIBC__) || (__GLIBC__ < 2) */

#endif