1 #include <sys/types.h>

     2 #include <sys/file.h>

     3 #include <fcntl.h>

     4 #include "hasflock.h"

     5 #include "lock.h"

     6 

     7 #ifdef HASFLOCK

     8 int lock_exnb(fd) int fd; { return flock(fd,LOCK_EX | LOCK_NB); }

     9 #else

    10 int lock_exnb(fd) int fd; { return lockf(fd,2,0); }

    11 #endif