8e62c8a9b4
The best time to attach a BPF filter to a socket is before a socket starts receiving data. Netlink sockets start receiving data after bind() has been called. uevent_open_socket() calls socket() and bind(). Hence split uevent_open_socket() into two functions: one function that calls socket() and another function that calls bind(). Bug: 203462310 Change-Id: Ia41dee4683358cf9fbb6288fad863cd4f4ac9924 Signed-off-by: Bart Van Assche <bvanassche@google.com>
38 lines
1.2 KiB
C
38 lines
1.2 KiB
C
/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef __CUTILS_UEVENT_H
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#define __CUTILS_UEVENT_H
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#include <stdbool.h>
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#include <sys/socket.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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int uevent_create_socket(int buf_sz, bool passcred);
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int uevent_bind(int socket);
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int uevent_open_socket(int buf_sz, bool passcred);
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ssize_t uevent_kernel_multicast_recv(int socket, void *buffer, size_t length);
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ssize_t uevent_kernel_multicast_uid_recv(int socket, void *buffer, size_t length, uid_t *uid);
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ssize_t uevent_kernel_recv(int socket, void *buffer, size_t length, bool require_group, uid_t *uid);
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#ifdef __cplusplus
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}
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#endif
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#endif /* __CUTILS_UEVENT_H */
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