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nonblocking.c
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C/C++ Source or Header
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1993-03-18
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823b
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56 lines
/* $Revision: 1.6 $
**
*/
#include "configdata.h"
#if defined(NBIO_IOCTL)
#include <sys/ioctl.h>
/*
** Enable or disable non-blocking I/O mode.
*/
int
SetNonBlocking(fd, flag)
int fd;
BOOL flag;
{
int state;
state = flag ? 1 : 0;
return ioctl(fd, FIONBIO, (char *)&state);
}
#endif /* defined(NBIO_IOCTL) */
#if defined(NBIO_FCNTL)
#include <sys/types.h>
#include <sys/file.h>
#include <fcntl.h>
#if !defined(FNDELAY)
#define FNDELAY O_NDELAY
#endif /* !defined(FNDELAY) */
/*
** Enable or disable non-blocking I/O mode.
*/
int
SetNonBlocking(fd, flag)
int fd;
BOOL flag;
{
int mode;
if ((mode = fcntl(fd, F_GETFL, 0)) < 0)
return -1;
if (flag)
mode |= FNDELAY;
else
mode &= ~FNDELAY;
return fcntl(fd, F_SETFL, mode);
}
#endif /* defined(NBIO_FCNTL) */