1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "log.h" 18 19 #include <fcntl.h> 20 #include <linux/audit.h> 21 #include <string.h> 22 23 #include <android-base/logging.h> 24 #include <selinux/selinux.h> 25 26 void InitKernelLogging(char* argv[]) { 27 // Make stdin/stdout/stderr all point to /dev/null. 28 int fd = open("/sys/fs/selinux/null", O_RDWR); 29 if (fd == -1) { 30 int saved_errno = errno; 31 android::base::InitLogging(argv, &android::base::KernelLogger); 32 errno = saved_errno; 33 PLOG(FATAL) << "Couldn't open /sys/fs/selinux/null"; 34 } 35 dup2(fd, 0); 36 dup2(fd, 1); 37 dup2(fd, 2); 38 if (fd > 2) close(fd); 39 40 android::base::InitLogging(argv, &android::base::KernelLogger); 41 } 42 43 int selinux_klog_callback(int type, const char *fmt, ...) { 44 android::base::LogSeverity severity = android::base::ERROR; 45 if (type == SELINUX_WARNING) { 46 severity = android::base::WARNING; 47 } else if (type == SELINUX_INFO) { 48 severity = android::base::INFO; 49 } 50 char buf[1024]; 51 va_list ap; 52 va_start(ap, fmt); 53 vsnprintf(buf, sizeof(buf), fmt, ap); 54 va_end(ap); 55 android::base::KernelLogger(android::base::MAIN, severity, "selinux", nullptr, 0, buf); 56 return 0; 57 } 58
