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 <stdlib.h> 18 #include <string.h> 19 #include <sys/uio.h> 20 21 #include <selinux/selinux.h> 22 23 #include "log.h" 24 25 static void init_klog_vwrite(int level, const char* fmt, va_list ap) { 26 static const char* tag = basename(getprogname()); 27 28 char prefix[64]; 29 snprintf(prefix, sizeof(prefix), "<%d>%s: ", level, tag); 30 31 char msg[512]; 32 vsnprintf(msg, sizeof(msg), fmt, ap); 33 34 iovec iov[2]; 35 iov[0].iov_base = prefix; 36 iov[0].iov_len = strlen(prefix); 37 iov[1].iov_base = msg; 38 iov[1].iov_len = strlen(msg); 39 40 klog_writev(level, iov, 2); 41 } 42 43 void init_klog_write(int level, const char* fmt, ...) { 44 va_list ap; 45 va_start(ap, fmt); 46 init_klog_vwrite(level, fmt, ap); 47 va_end(ap); 48 } 49 50 int selinux_klog_callback(int type, const char *fmt, ...) { 51 int level = KLOG_ERROR_LEVEL; 52 if (type == SELINUX_WARNING) { 53 level = KLOG_WARNING_LEVEL; 54 } else if (type == SELINUX_INFO) { 55 level = KLOG_INFO_LEVEL; 56 } 57 va_list ap; 58 va_start(ap, fmt); 59 init_klog_vwrite(level, fmt, ap); 60 va_end(ap); 61 return 0; 62 } 63
