sysdeps/unix/sysv/linux/sendfile64.c

   1 /* Transfer data between file descriptors.  Linux version.
   2    Copyright (C) 2022-2024 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library.  If not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <sys/sendfile.h>
  20 #include <stddef.h>
  21 #include <errno.h>
  22 #include <sysdep.h>
  23
  24 /* Send COUNT bytes from file associated with IN_FD starting at OFFSET to
  25    descriptor OUT_FD.  */
  26 ssize_t
  27 sendfile64 (int out_fd, int in_fd, off64_t *offset, size_t count)
  28 {
  29 #ifndef __NR_sendfile64
  30 # define __NR_sendfile64 __NR_sendfile
  31 #endif
  32   return INLINE_SYSCALL_CALL (sendfile64, out_fd, in_fd, offset, count);
  33 }
  34
  35 #ifdef __OFF_T_MATCHES_OFF64_T
  36 strong_alias (sendfile64, sendfile)
  37 #endif