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0f907de1 JD |
1 | /* |
2 | * Copyright (C) 2013 - Julien Desfossez <jdesfossez@efficios.com> | |
3 | * David Goulet <dgoulet@efficios.com> | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms of the GNU General Public License, version 2 only, as | |
7 | * published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | * more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along with | |
15 | * this program; if not, write to the Free Software Foundation, Inc., 51 | |
16 | * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
17 | */ | |
18 | ||
19 | #define _GNU_SOURCE | |
20 | #include <assert.h> | |
21 | ||
22 | #include <common/common.h> | |
23 | ||
24 | #include "cmd-generic.h" | |
25 | ||
26 | int cmd_recv(struct lttcomm_sock *sock, void *buf, size_t len) | |
27 | { | |
28 | int ret; | |
29 | ||
30 | assert(sock); | |
31 | assert(buf); | |
32 | ||
33 | ret = sock->ops->recvmsg(sock, buf, len, 0); | |
34 | if (ret < len) { | |
35 | if (ret == 0) { | |
36 | /* Orderly shutdown. Not necessary to print an error. */ | |
37 | DBG("Socket %d did an orderly shutdown", sock->fd); | |
38 | } else { | |
39 | ERR("Relay didn't receive valid add_stream struct size. " | |
8fd623e0 | 40 | "Expected %zu, got %d", len, ret); |
0f907de1 JD |
41 | } |
42 | ret = -1; | |
43 | goto error; | |
44 | } | |
45 | ||
46 | error: | |
47 | return ret; | |
48 | } |