truncate.c 1.2 KB

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  1. /* Copyright (C) 2016-2019 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. <http://www.gnu.org/licenses/>. */
  14. #include <unistd.h>
  15. #include <sysdep.h>
  16. #include <errno.h>
  17. #ifndef __OFF_T_MATCHES_OFF64_T
  18. /* Truncate PATH to LENGTH bytes. */
  19. int
  20. __truncate (const char *path, off_t length)
  21. {
  22. # ifndef __NR_truncate
  23. return INLINE_SYSCALL_CALL (truncate64, path,
  24. __ALIGNMENT_ARG SYSCALL_LL (length));
  25. # else
  26. return INLINE_SYSCALL_CALL (truncate, path, length);
  27. # endif
  28. }
  29. weak_alias (__truncate, truncate)
  30. #endif