getutline.c 1.3 KB

12345678910111213141516171819202122232425262728293031323334353637383940414243444546
  1. /* Copyright (C) 1996-2026 Free Software Foundation, Inc.
  2. This file is part of the GNU C Library.
  3. The GNU C Library is free software; you can redistribute it and/or
  4. modify it under the terms of the GNU Lesser General Public
  5. License as published by the Free Software Foundation; either
  6. version 2.1 of the License, or (at your option) any later version.
  7. The GNU C Library is distributed in the hope that it will be useful,
  8. but WITHOUT ANY WARRANTY; without even the implied warranty of
  9. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  10. Lesser General Public License for more details.
  11. You should have received a copy of the GNU Lesser General Public
  12. License along with the GNU C Library; if not, see
  13. <https://www.gnu.org/licenses/>. */
  14. #include <stdlib.h>
  15. #include <utmp.h>
  16. #include <set-freeres.h>
  17. /* Local buffer to store the result. */
  18. static struct utmp *buffer;
  19. struct utmp *
  20. __getutline (const struct utmp *line)
  21. {
  22. struct utmp *result;
  23. if (buffer == NULL)
  24. {
  25. buffer = (struct utmp *) malloc (sizeof (struct utmp));
  26. if (buffer == NULL)
  27. return NULL;
  28. }
  29. if (__getutline_r (line, buffer, &result) < 0)
  30. return NULL;
  31. return result;
  32. }
  33. libc_hidden_def (__getutline)
  34. weak_alias (__getutline, getutline)
  35. weak_alias (buffer, __libc_getutline_freemem_ptr)