libiberty/rename.c

   1 /* rename -- rename a file
   2    This function is in the public domain. */
   3
   4 /* Rename a file.  */
   5
   6 #include <errno.h>
   7
   8 int
   9 rename (zfrom, zto)
  10      char *zfrom;
  11      char *zto;
  12 {
  13   if (link (zfrom, zto) < 0)
  14     {
  15       if (errno != EEXIST)
  16         return -1;
  17       if (unlink (zto) < 0
  18           || link (zfrom, zto) < 0)
  19         return -1;
  20     }
  21   return unlink (zfrom);
  22 }