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Commit 9348f0de authored by Martin Schwidefsky's avatar Martin Schwidefsky Committed by David Woodhouse
Browse files

[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: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: default avatarDavid Woodhouse <dwmw2@infradead.org>
parent d2731765

include/asm-s390/posix_types.h

+28 −16
Original line number Diff line number Diff line
@@ -76,24 +76,36 @@ typedef struct { 
} __kernel_fsid_t;





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



#ifndef _S390_BITOPS_H

#include <asm/bitops.h>

#endif

#ifdef __KERNEL__



#undef __FD_SET

#define __FD_SET(fd,fdsetp)  set_bit((fd),(fdsetp)->fds_bits)

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

#define __FD_CLR(fd,fdsetp)  clear_bit((fd),(fdsetp)->fds_bits)

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

#define __FD_ISSET(fd,fdsetp)  test_bit((fd),(fdsetp)->fds_bits)

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