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52 lines
1.8 KiB
C
52 lines
1.8 KiB
C
8 years ago
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/* sendfile -- copy data directly from one file descriptor to another
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Copyright (C) 1998-2016 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#ifndef _SYS_SENDFILE_H
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#define _SYS_SENDFILE_H 1
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#include <features.h>
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#include <sys/types.h>
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__BEGIN_DECLS
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/* Send up to COUNT bytes from file associated with IN_FD starting at
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*OFFSET to descriptor OUT_FD. Set *OFFSET to the IN_FD's file position
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following the read bytes. If OFFSET is a null pointer, use the normal
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file position instead. Return the number of written bytes, or -1 in
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case of error. */
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#ifndef __USE_FILE_OFFSET64
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extern ssize_t sendfile (int __out_fd, int __in_fd, off_t *__offset,
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size_t __count) __THROW;
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#else
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# ifdef __REDIRECT_NTH
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extern ssize_t __REDIRECT_NTH (sendfile,
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(int __out_fd, int __in_fd, __off64_t *__offset,
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size_t __count), sendfile64);
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# else
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# define sendfile sendfile64
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# endif
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#endif
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#ifdef __USE_LARGEFILE64
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extern ssize_t sendfile64 (int __out_fd, int __in_fd, __off64_t *__offset,
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size_t __count) __THROW;
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#endif
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__END_DECLS
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#endif /* sys/sendfile.h */
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