getnetbyad.c 1.3 KB

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  1. /*
  2. * Copyright (c) 1983 Regents of the University of California.
  3. * All rights reserved.
  4. *
  5. * Redistribution and use in source and binary forms are permitted
  6. * provided that the above copyright notice and this paragraph are
  7. * duplicated in all such forms and that any documentation,
  8. * advertising materials, and other materials related to such
  9. * distribution and use acknowledge that the software was developed
  10. * by the University of California, Berkeley. The name of the
  11. * University may not be used to endorse or promote products derived
  12. * from this software without specific prior written permission.
  13. * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
  14. * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
  15. * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  16. */
  17. #define __FORCE_GLIBC
  18. #include <features.h>
  19. #include <netdb.h>
  20. #include <unistd.h>
  21. libc_hidden_proto(setnetent)
  22. libc_hidden_proto(getnetent)
  23. libc_hidden_proto(endnetent)
  24. extern smallint _net_stayopen attribute_hidden;
  25. struct netent *getnetbyaddr (uint32_t net, int type)
  26. {
  27. register struct netent *p;
  28. setnetent(_net_stayopen);
  29. while ((p = getnetent()))
  30. if (p->n_addrtype == type && p->n_net == net)
  31. break;
  32. if (!_net_stayopen)
  33. endnetent();
  34. return (p);
  35. }