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git.proxmox.com Git - ceph.git/blob - ceph/src/c-ares/ares_writev.c
3 /* Copyright 1998 by the Massachusetts Institute of Technology.
5 * Permission to use, copy, modify, and distribute this
6 * software and its documentation for any purpose and without
7 * fee is hereby granted, provided that the above copyright
8 * notice appear in all copies and that both that copyright
9 * notice and this permission notice appear in supporting
10 * documentation, and that the name of M.I.T. not be used in
11 * advertising or publicity pertaining to distribution of the
12 * software without specific, written prior permission.
13 * M.I.T. makes no representations about the suitability of
14 * this software for any purpose. It is provided "as is"
15 * without express or implied warranty.
18 #include "ares_setup.h"
25 #include "ares_private.h"
28 ssize_t
ares_writev(ares_socket_t s
, const struct iovec
*iov
, int iovcnt
)
42 /* Validate and find the sum of the iov_len values in the iov array */
43 for (i
= 0; i
< iovcnt
; i
++)
45 if (iov
[i
].iov_len
> INT_MAX
- bytes
)
50 bytes
+= iov
[i
].iov_len
;
56 /* Allocate a temporary buffer to hold the data */
57 buffer
= ares_malloc(bytes
);
64 /* Copy the data into buffer */
65 for (bp
= buffer
, i
= 0; i
< iovcnt
; ++i
)
67 memcpy (bp
, iov
[i
].iov_base
, iov
[i
].iov_len
);
71 /* Send buffer contents */
72 result
= swrite(s
, buffer
, bytes
);