src/sysdeps/tryflock.c


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/* ISC license. */

#undef _POSIX_C_SOURCE
#undef _XOPEN_SOURCE

#include <sys/types.h>
#include <sys/file.h>
#include <fcntl.h>

int main (void)
{
  return flock(0, LOCK_EX | LOCK_UN | LOCK_NB) ;
}