| /* Copyright (C) 2011-2014 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library. If not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <sys/sendfile.h> |
| #include <errno.h> |
| |
| /* Send COUNT bytes from file associated with IN_FD starting at OFFSET to |
| descriptor OUT_FD. */ |
| ssize_t |
| sendfile (int out_fd, int in_fd, off_t *offset, size_t count) |
| { |
| __off64_t off64; |
| int rc; |
| |
| if (offset != NULL) |
| { |
| if (*offset < 0 || (off_t) (*offset + count) < 0) |
| { |
| __set_errno (EINVAL); |
| return -1; |
| } |
| off64 = *offset; |
| } |
| |
| rc = INLINE_SYSCALL (sendfile64, 4, out_fd, in_fd, |
| offset ? &off64 : NULL, count); |
| if (offset) |
| *offset = off64; |
| return rc; |
| } |
