*/
void symlink_copy(const char *zFrom, const char *zTo){
  Blob content;
  blob_read_link(&content, zFrom);
  symlink_create(blob_str(&content), zTo);
  blob_reset(&content);
}

#ifdef __CYGWIN__
/* Workaround for recently introduced Cygwin bug: group execute */
/* permission is always set, so it cannot be relied upon! */
# undef S_IXGRP
# define S_IXGRP 0
#endif

/*
** Return file permissions (normal, executable, or symlink):
**   - PERM_EXE if file is executable;
**   - PERM_LNK on Unix if file is symlink and allow-symlinks option is on;
**   - PERM_REG for all other cases (regular file, directory, fifo, etc).
*/