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[S390] __FD_foo definitions. 

Make the definitions of __FD_SET, __FD_CLR and __FD_ISSET independent
from asm/bitops.h and remove the macro magic that tests for __GLIBC__.
Use simple C inline functions instead of set_bit, clear_bit and test_bit.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
This commit is contained in:
Martin Schwidefsky 2006-06-14 14:10:51 +01:00 committed by David Woodhouse
parent d27317657a
commit 9348f0de2d
1 changed files with 25 additions and 13 deletions
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38
include/asm-s390/posix_types.h
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@ -76,24 +76,36 @@ typedef struct {
} __kernel_fsid_t;
#if defined(__KERNEL__) || !defined(__GLIBC__) || (__GLIBC__ < 2)
#ifdef __KERNEL__
#ifndef _S390_BITOPS_H
#include <asm/bitops.h>
#endif
#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_SET
#define __FD_SET(fd,fdsetp) set_bit((fd),(fdsetp)->fds_bits)
#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_CLR
#define __FD_CLR(fd,fdsetp) clear_bit((fd),(fdsetp)->fds_bits)
#undef __FD_ISSET
#define __FD_ISSET(fd,fdsetp) test_bit((fd),(fdsetp)->fds_bits)
#undef __FD_ISSET
static inline int __FD_ISSET(unsigned long fd, const __kernel_fd_set *fdsetp)
{
unsigned long _tmp = fd / __NFDBITS;
unsigned long _rem = fd % __NFDBITS;
return (fdsetp->fds_bits[_tmp] & (1UL<<_rem)) != 0;
}
#undef __FD_ZERO
#define __FD_ZERO(fdsetp) (memset ((fdsetp), 0, sizeof(*(fd_set *)(fdsetp))))
#define __FD_ZERO(fdsetp) \
((void) memset ((__ptr_t) (fdsetp), 0, sizeof (__kernel_fd_set)))
#endif /* defined(__KERNEL__) || !defined(__GLIBC__) || (__GLIBC__ < 2)*/
#endif /* __KERNEL__ */
#endif