serval-dna/nacl/nacl-20110221/curvecp/blocking.c

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#include <fcntl.h>
#include "blocking.h"
void blocking_enable(int fd)
{
fcntl(fd,F_SETFL,fcntl(fd,F_GETFL,0) & ~O_NONBLOCK);
}
void blocking_disable(int fd)
{
fcntl(fd,F_SETFL,fcntl(fd,F_GETFL,0) | O_NONBLOCK);
}