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01: /* sendfile -- copy data directly from one file descriptor to another
02:    Copyright (C) 1998,99,01,2002,2004 Free Software Foundation, Inc.
03:    This file is part of the GNU C Library.
04: 
05:    The GNU C Library is free software; you can redistribute it and/or
06:    modify it under the terms of the GNU Lesser General Public
07:    License as published by the Free Software Foundation; either
08:    version 2.1 of the License, or (at your option) any later version.
09: 
10:    The GNU C Library is distributed in the hope that it will be useful,
11:    but WITHOUT ANY WARRANTY; without even the implied warranty of
12:    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13:    Lesser General Public License for more details.
14: 
15:    You should have received a copy of the GNU Lesser General Public
16:    License along with the GNU C Library; if not, write to the Free
17:    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
18:    02111-1307 USA.  */
19: 
20: #ifndef _SYS_SENDFILE_H
21: #define _SYS_SENDFILE_H 1
22: 
23: #include <features.h>
24: #include <sys/types.h>
25: 
26: __BEGIN_DECLS
27: 
28: /* Send up to COUNT bytes from file associated with IN_FD starting at
29:    *OFFSET to descriptor OUT_FD.  Set *OFFSET to the IN_FD's file position
30:    following the read bytes.  If OFFSET is a null pointer, use the normal
31:    file position instead.  Return the number of written bytes, or -1 in
32:    case of error.  */
33: #ifndef __USE_FILE_OFFSET64
34: extern ssize_t sendfile (int __out_fd, int __in_fd, off_t *__offset,
35:                          size_t __count) __THROW;
36: #else
37: # ifdef __REDIRECT_NTH
38: extern ssize_t __REDIRECT_NTH (sendfile,
39:                                (int __out_fd, int __in_fd, __off64_t *__offset,
40:                                 size_t __count), sendfile64);
41: # else
42: #  define sendfile sendfile64
43: # endif
44: #endif
45: #ifdef __USE_LARGEFILE64
46: extern ssize_t sendfile64 (int __out_fd, int __in_fd, __off64_t *__offset,
47:                            size_t __count) __THROW;
48: #endif
49: 
50: __END_DECLS
51: 
52: #endif  /* sys/sendfile.h */
53: 

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