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/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 1998-2016. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* %CopyrightEnd%
*/
#ifdef __WIN32__
# include <winsock2.h>
# include <windows.h>
# include <winbase.h>
#else /* Unix/VxWorks */
#include <unistd.h>
#endif
#include <string.h>
#include <stdlib.h>
#include "eidef.h"
#include "eiext.h"
#include "eisend.h"
#include "ei_connect_int.h"
#include "ei_trace.h"
#include "ei_internal.h"
#include "putget.h"
#include "ei_portio.h"
#include "show_msg.h"
/* use this to break a link */
int ei_send_exit(int fd, const erlang_pid *from,
const erlang_pid *to, const char *reason)
{
return ei_send_exit_tmo(fd,from,to,reason,0);
}
int ei_send_exit_tmo(int fd, const erlang_pid *from, const erlang_pid *to,
const char *reason, unsigned ms)
{
char sbuf[EISMALLBUF];
erlang_trace *token = NULL;
char *dbuf = NULL;
char *msgbuf;
char *s;
int index = 0;
int len = strlen(reason) + 1080; /* see below */
ei_socket_callbacks *cbs;
void *ctx;
int err;
ssize_t wlen;
unsigned tmo = ms == 0 ? EI_SCLBK_INF_TMO : ms;
err = EI_GET_CBS_CTX__(&cbs, &ctx, fd);
if (err) {
EI_CONN_SAVE_ERRNO__(err);
return ERL_ERROR;
}
if (len > EISMALLBUF)
if (!(dbuf = malloc(len)))
return -1;
msgbuf = (dbuf ? dbuf : sbuf);
/* are we tracing? */
/* check that he can receive trace tokens first */
if (ei_distversion(fd) > 0) token = ei_trace(0,NULL);
index = 5; /* max sizes: */
ei_encode_version(msgbuf,&index); /* 1 */
if (token) {
ei_encode_tuple_header(msgbuf,&index,5); /* 2 */
ei_encode_long(msgbuf,&index,ERL_EXIT_TT); /* 2 */
}
else {
ei_encode_tuple_header(msgbuf,&index,4);
ei_encode_long(msgbuf,&index,ERL_EXIT);
}
ei_encode_pid(msgbuf,&index,from); /* 268 */
ei_encode_pid(msgbuf,&index,to); /* 268 */
if (token) ei_encode_trace(msgbuf,&index,token); /* 534 */
/* Reason */
ei_encode_string(msgbuf,&index,reason); /* len */
/* 5 byte header missing */
s = msgbuf;
put32be(s, index - 4); /* 4 */
put8(s, ERL_PASS_THROUGH); /* 1 */
/*** sum: len + 1080 */
if (ei_tracelevel >= 4)
ei_show_sendmsg(stderr,msgbuf,NULL);
wlen = (ssize_t) index;
err = ei_write_fill_ctx_t__(cbs, ctx, msgbuf, &wlen, tmo);
if (!err && wlen != (ssize_t) index)
err = EIO;
if (dbuf)
free(dbuf);
if (err) {
EI_CONN_SAVE_ERRNO__(err);
return ERL_ERROR;
}
return 0;
}
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