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[glibc.git] / misc / sys / uio.h
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1 /* Copyright (C) 1991, 92, 96, 97, 98, 99 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, write to the Free
16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
17 02111-1307 USA. */
19 #ifndef _SYS_UIO_H
20 #define _SYS_UIO_H 1
22 #include <features.h>
24 #include <sys/types.h>
26 __BEGIN_DECLS
28 /* This file defines `struct iovec'. */
29 #include <bits/uio.h>
32 /* Read data from file descriptor FD, and put the result in the
33 buffers described by VECTOR, which is a vector of COUNT `struct iovec's.
34 The buffers are filled in the order specified.
35 Operates just like `read' (see <unistd.h>) except that data are
36 put in VECTOR instead of a contiguous buffer. */
37 extern ssize_t readv (int __fd, __const struct iovec *__vector, int __count)
38 __THROW;
40 /* Write data pointed by the buffers described by VECTOR, which
41 is a vector of COUNT `struct iovec's, to file descriptor FD.
42 The data is written in the order specified.
43 Operates just like `write' (see <unistd.h>) except that the data
44 are taken from VECTOR instead of a contiguous buffer. */
45 extern ssize_t writev (int __fd, __const struct iovec *__vector, int __count)
46 __THROW;
48 __END_DECLS
50 #endif /* sys/uio.h */