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#include <sys/types.h>
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#include <fcntl.h>
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#include "ndelay.h"
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#ifndef O_NDELAY
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#define O_NDELAY O_NONBLOCK
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#endif
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int ndelay_on(int fd) {
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return fcntl(fd,F_SETFL,fcntl(fd,F_GETFL,0) | O_NDELAY);
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}
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