sendfile.h
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- /* sendfile -- copy data directly from one file descriptor to another
- Copyright (C) 1998,99,01,2002,2004 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, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
- #ifndef _SYS_SENDFILE_H
- #define _SYS_SENDFILE_H 1
- #include <features.h>
- #include <sys/types.h>
- __BEGIN_DECLS
- /* Send up to COUNT bytes from file associated with IN_FD starting at
- *OFFSET to descriptor OUT_FD. Set *OFFSET to the IN_FD's file position
- following the read bytes. If OFFSET is a null pointer, use the normal
- file position instead. Return the number of written bytes, or -1 in
- case of error. */
- #ifndef __USE_FILE_OFFSET64
- extern ssize_t sendfile (int __out_fd, int __in_fd, off_t *__offset,
- size_t __count) __THROW __nonnull ((3));
- #else
- # ifdef __REDIRECT_NTH
- extern ssize_t __REDIRECT_NTH (sendfile,
- (int __out_fd, int __in_fd, __off64_t *__offset,
- size_t __count), sendfile64) __nonnull ((3));
- # else
- # define sendfile sendfile64
- # endif
- #endif
- #ifdef __USE_LARGEFILE64
- extern ssize_t sendfile64 (int __out_fd, int __in_fd, __off64_t *__offset,
- size_t __count) __THROW __nonnull ((3));
- #endif
- __END_DECLS
- #endif /* sys/sendfile.h */