pwritev.c 1.7 KB

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  1. /* Copyright (C) 2009-2019 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 <sys/uio.h>
  15. #include <sysdep-cancel.h>
  16. #ifndef __OFF_T_MATCHES_OFF64_T
  17. # ifdef __ASSUME_PREADV
  18. # ifndef __NR_pwritev
  19. # define __NR_pwritev __NR_pwritev64
  20. # endif
  21. ssize_t
  22. pwritev (int fd, const struct iovec *vector, int count, off_t offset)
  23. {
  24. return SYSCALL_CANCEL (pwritev, fd, vector, count, LO_HI_LONG (offset));
  25. }
  26. # else
  27. static ssize_t __atomic_pwritev_replacement (int, const struct iovec *,
  28. int, off_t);
  29. ssize_t
  30. pwritev (int fd, const struct iovec *vector, int count, off_t offset)
  31. {
  32. # ifdef __NR_pwritev
  33. ssize_t result = SYSCALL_CANCEL (pwritev, fd, vector, count,
  34. LO_HI_LONG (offset));
  35. if (result >= 0 || errno != ENOSYS)
  36. return result;
  37. # endif
  38. return __atomic_pwritev_replacement (fd, vector, count, offset);
  39. }
  40. # define PWRITEV static __atomic_pwritev_replacement
  41. # define PWRITE __pwrite
  42. # define OFF_T off_t
  43. # include <sysdeps/posix/pwritev_common.c>
  44. # endif /* __ASSUME_PREADV */
  45. libc_hidden_def (pwritev)
  46. #endif