diff options
Diffstat (limited to 'third_party/heimdal/lib/roken/recvmsg.c')
-rw-r--r-- | third_party/heimdal/lib/roken/recvmsg.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/third_party/heimdal/lib/roken/recvmsg.c b/third_party/heimdal/lib/roken/recvmsg.c new file mode 100644 index 00000000000..aba298b9081 --- /dev/null +++ b/third_party/heimdal/lib/roken/recvmsg.c @@ -0,0 +1,66 @@ +/* + * Copyright (c) 1995, 1996, 1997, 1998, 1999 Kungliga Tekniska Högskolan + * (Royal Institute of Technology, Stockholm, Sweden). + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <config.h> + +#include "roken.h" + +ROKEN_LIB_FUNCTION ssize_t ROKEN_LIB_CALL +recvmsg(int s, struct msghdr *msg, int flags) +{ + ssize_t ret, nb; + size_t tot = 0; + int i; + char *buf, *p; + struct iovec *iov = msg->msg_iov; + + for(i = 0; i < msg->msg_iovlen; ++i) + tot += iov[i].iov_len; + buf = malloc(tot); + if (tot != 0 && buf == NULL) { + errno = ENOMEM; + return -1; + } + nb = ret = recvfrom (s, buf, tot, flags, msg->msg_name, &msg->msg_namelen); + p = buf; + while (nb > 0) { + ssize_t cnt = min(nb, iov->iov_len); + + memcpy (iov->iov_base, p, cnt); + p += cnt; + nb -= cnt; + ++iov; + } + free(buf); + return ret; +} |