1 /* Copyright (C) 1991, 92, 96, 97, 98, 99, 2003 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, see
16 <http://www.gnu.org/licenses/>. */
23 #include <sys/types.h>
27 /* This file defines `struct iovec'. */
31 /* Read data from file descriptor FD, and put the result in the
32 buffers described by IOVEC, which is a vector of COUNT `struct iovec's.
33 The buffers are filled in the order specified.
34 Operates just like `read' (see <unistd.h>) except that data are
35 put in IOVEC instead of a contiguous buffer.
37 This function is a cancellation point and therefore not marked with
39 extern ssize_t
readv (int __fd
, const struct iovec
*__iovec
, int __count
);
41 /* Write data pointed by the buffers described by IOVEC, which
42 is a vector of COUNT `struct iovec's, to file descriptor FD.
43 The data is written in the order specified.
44 Operates just like `write' (see <unistd.h>) except that the data
45 are taken from IOVEC instead of a contiguous buffer.
47 This function is a cancellation point and therefore not marked with
49 extern ssize_t
writev (int __fd
, const struct iovec
*__iovec
, int __count
);
52 /* Read data from file descriptor FD at the given position OFFSET
53 without change the file pointer, and put the result in the buffers
54 described by IOVEC, which is a vector of COUNT 'struct iovec's.
55 The buffers are filled in the order specified. Operates just like
56 'pread' (see <unistd.h>) except that data are put in IOVEC instead
57 of a contiguous buffer.
59 This function is a cancellation point and therefore not marked with
61 extern ssize_t
preadv (int __fd
, const struct iovec
*__iovec
, int __count
,
62 __off_t __offset
) __wur
;
64 /* Write data pointed by the buffers described by IOVEC, which is a
65 vector of COUNT 'struct iovec's, to file descriptor FD at the given
66 position OFFSET without change the file pointer. The data is
67 written in the order specified. Operates just like 'pwrite' (see
68 <unistd.h>) except that the data are taken from IOVEC instead of a
71 This function is a cancellation point and therefore not marked with
73 extern ssize_t
pwritev (int __fd
, const struct iovec
*__iovec
, int __count
,
74 __off_t __offset
) __wur
;
75 #endif /* Use misc. */
79 #endif /* sys/uio.h */