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copy_file_range: New function to copy file data

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The semantics are based on the Linux system call, but a very close
emulation in user space is provided.
This commit is contained in:
Florian Weimer
2017-12-22 10:55:40 +01:00
parent 6cb86fd21c
commit bad7a0c81f
44 changed files with 1340 additions and 3 deletions
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22
io/copy_file_range.c Normal file
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/* Generic implementation of copy_file_range.
Copyright (C) 2017 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/>. */
#define COPY_FILE_RANGE_DECL
#define COPY_FILE_RANGE copy_file_range
#include <io/copy_file_range-compat.c>