Return-Path: From: Andrei Emeltchenko To: linux-bluetooth@vger.kernel.org Subject: [RFCv1 5/6] android: Add helper to send fd using SCM_RIGHTS Date: Mon, 21 Oct 2013 14:28:36 +0300 Message-Id: <1382354917-8632-6-git-send-email-Andrei.Emeltchenko.news@gmail.com> In-Reply-To: <1382354917-8632-1-git-send-email-Andrei.Emeltchenko.news@gmail.com> References: <1382354917-8632-1-git-send-email-Andrei.Emeltchenko.news@gmail.com> Sender: linux-bluetooth-owner@vger.kernel.org List-ID: From: Andrei Emeltchenko This is used in accept message to Android framework. --- android/Android.mk | 1 + android/bt-sock.c | 64 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 65 insertions(+) create mode 100644 android/bt-sock.c diff --git a/android/Android.mk b/android/Android.mk index 4bd4116..786c9fb 100644 --- a/android/Android.mk +++ b/android/Android.mk @@ -57,6 +57,7 @@ LOCAL_SRC_FILES := \ hal-hidhost.c \ hal-pan.c \ hal-msg-client.c \ + bt-sock.c \ LOCAL_SHARED_LIBRARIES := \ libcutils \ diff --git a/android/bt-sock.c b/android/bt-sock.c new file mode 100644 index 0000000..68dbe32 --- /dev/null +++ b/android/bt-sock.c @@ -0,0 +1,64 @@ +/* + * Copyright (C) 2013 Intel Corporation + * + * 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. + * + */ + +#include +#include +#include + +#include + +int bt_sock_send_acc_fd(int sock_fd, const unsigned char *buf, int len, + int send_fd) +{ + ssize_t ret; + struct msghdr msg; + struct cmsghdr *cmsg; + struct iovec iv; + char msgbuf[CMSG_SPACE(1)]; + + ALOGD("%s: len %d sock_fd %d send_fd %d", __func__, len, sock_fd, + send_fd); + + if (sock_fd == -1 || send_fd == -1) + return -1; + + memset(&msg, 0, sizeof(msg)); + + msg.msg_control = msgbuf; + msg.msg_controllen = sizeof(msgbuf); + cmsg = CMSG_FIRSTHDR(&msg); + cmsg->cmsg_level = SOL_SOCKET; + cmsg->cmsg_type = SCM_RIGHTS; + cmsg->cmsg_len = CMSG_LEN(sizeof(send_fd)); + memcpy(CMSG_DATA(cmsg), &send_fd, sizeof(send_fd)); + + iv.iov_base = (unsigned char *) buf; + iv.iov_len = len; + + msg.msg_iov = &iv; + msg.msg_iovlen = 1; + + ret = sendmsg(sock_fd, &msg, MSG_NOSIGNAL); + if (ret < 0) { + ALOGE("%s: sock_fd %d send_fd %d sendmsg ret %d errno %d %s", + __func__, sock_fd, send_fd, (int)ret, errno, + strerror(errno)); + return ret; + } + + return ret; +} -- 1.7.10.4