1 /* 2 * Copyright (C) 2017 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 /* Miniature version of a header-only keyutils.h (no library required) */ 18 19 #ifndef _INIT_KEYUTILS_H_ 20 #define _INIT_KEYUTILS_H_ 21 22 #ifndef KEYUTILS_H /* walk away if the _real_ one exists */ 23 24 #include <linux/keyctl.h> 25 #include <stdarg.h> 26 #include <sys/syscall.h> 27 #include <unistd.h> 28 29 static inline long keyctl(int cmd, ...) { 30 va_list va; 31 unsigned long arg2, arg3, arg4, arg5; 32 33 va_start(va, cmd); 34 arg2 = va_arg(va, unsigned long); 35 arg3 = va_arg(va, unsigned long); 36 arg4 = va_arg(va, unsigned long); 37 arg5 = va_arg(va, unsigned long); 38 va_end(va); 39 return syscall(__NR_keyctl, cmd, arg2, arg3, arg4, arg5); 40 } 41 42 #endif 43 44 #endif 45
