| 1 | /* sendfile -- copy data directly from one file descriptor to another |
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| 2 | Copyright (C) 1998,99,01,2002 Free Software Foundation, Inc. |
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| 3 | This file is part of the GNU C Library. |
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| 4 | |
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| 5 | The GNU C Library is free software; you can redistribute it and/or |
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| 6 | modify it under the terms of the GNU Lesser General Public |
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| 7 | License as published by the Free Software Foundation; either |
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| 8 | version 2.1 of the License, or (at your option) any later version. |
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| 9 | |
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| 10 | The GNU C Library is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | Lesser General Public License for more details. |
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| 14 | |
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| 15 | You should have received a copy of the GNU Lesser General Public |
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| 16 | License along with the GNU C Library; if not, write to the Free |
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| 17 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
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| 18 | 02111-1307 USA. */ |
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| 19 | |
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| 20 | #ifndef _SYS_SENDFILE_H |
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| 21 | #define _SYS_SENDFILE_H 1 |
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| 22 | |
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| 23 | #include <features.h> |
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| 24 | #include <sys/types.h> |
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| 25 | |
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| 26 | __BEGIN_DECLS |
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| 27 | |
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| 28 | /* Send up to COUNT bytes from file associated with IN_FD starting at |
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| 29 | *OFFSET to descriptor OUT_FD. Set *OFFSET to the IN_FD's file position |
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| 30 | following the read bytes. If OFFSET is a null pointer, use the normal |
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| 31 | file position instead. Return the number of written bytes, or -1 in |
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| 32 | case of error. */ |
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| 33 | #ifndef __USE_FILE_OFFSET64 |
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| 34 | extern ssize_t sendfile (int __out_fd, int __in_fd, off_t *__offset, |
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| 35 | size_t __count) __THROW; |
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| 36 | #else |
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| 37 | # ifdef __REDIRECT |
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| 38 | extern ssize_t __REDIRECT (sendfile, |
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| 39 | (int __out_fd, int __in_fd, __off64_t *__offset, |
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| 40 | size_t __count) __THROW, |
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| 41 | sendfile64); |
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| 42 | # else |
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| 43 | # define sendfile sendfile64 |
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| 44 | # endif |
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| 45 | #endif |
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| 46 | #ifdef __USE_LARGEFILE64 |
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| 47 | extern ssize_t sendfile64 (int __out_fd, int __in_fd, __off64_t *__offset, |
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| 48 | size_t __count) __THROW; |
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| 49 | #endif |
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| 50 | |
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| 51 | __END_DECLS |
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| 52 | |
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| 53 | #endif /* sys/sendfile.h */ |
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