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/* Public domain. */
#include <sys/types.h>
#include <sys/file.h>
#include <fcntl.h>
#include "hasflock.h"
#include "lock.h"
#ifdef HASFLOCK
int lock_exnb(int fd) { return flock(fd,LOCK_EX | LOCK_NB); }
#else
int lock_exnb(int fd) { return lockf(fd,2,0); }
#endif
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