mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-23 13:30:06 +00:00
688903eb3e
* All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.
47 lines
1.7 KiB
C
47 lines
1.7 KiB
C
/* Linux implementation of copy_file_range.
|
|
Copyright (C) 2017-2018 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
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 <errno.h>
|
|
#include <sysdep-cancel.h>
|
|
#include <unistd.h>
|
|
|
|
/* Include the fallback implementation. */
|
|
#ifndef __ASSUME_COPY_FILE_RANGE
|
|
#define COPY_FILE_RANGE_DECL static
|
|
#define COPY_FILE_RANGE copy_file_range_compat
|
|
#include <io/copy_file_range-compat.c>
|
|
#endif
|
|
|
|
ssize_t
|
|
copy_file_range (int infd, __off64_t *pinoff,
|
|
int outfd, __off64_t *poutoff,
|
|
size_t length, unsigned int flags)
|
|
{
|
|
#ifdef __NR_copy_file_range
|
|
ssize_t ret = SYSCALL_CANCEL (copy_file_range, infd, pinoff, outfd, poutoff,
|
|
length, flags);
|
|
# ifndef __ASSUME_COPY_FILE_RANGE
|
|
if (ret == -1 && errno == ENOSYS)
|
|
ret = copy_file_range_compat (infd, pinoff, outfd, poutoff, length, flags);
|
|
# endif
|
|
return ret;
|
|
#else /* !__NR_copy_file_range */
|
|
return copy_file_range_compat (infd, pinoff, outfd, poutoff, length, flags);
|
|
#endif
|
|
}
|