1 /* 2 * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved. 3 * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without modification, 6 * are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, this list of 9 * conditions and the following disclaimer. 10 * 11 * 2. Redistributions in binary form must reproduce the above copyright notice, this list 12 * of conditions and the following disclaimer in the documentation and/or other materials 13 * provided with the distribution. 14 * 15 * 3. Neither the name of the copyright holder nor the names of its contributors may be used 16 * to endorse or promote products derived from this software without specific prior written 17 * permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #ifndef _LITEIPC_H 33 #define _LITEIPC_H 34 35 #include <stdint.h> 36 37 #define LITEIPC_DRIVER "/dev/lite_ipc" 38 39 typedef enum { OBJ_FD, OBJ_PTR, OBJ_SVC } ObjType; 40 41 typedef struct { 42 uint32_t buffSz; 43 void *buff; 44 } BuffPtr; 45 46 typedef struct { 47 uint32_t handle; 48 uint32_t token; 49 uint32_t cookie; 50 } SvcIdentity; 51 52 typedef union { 53 uint32_t fd; 54 BuffPtr ptr; 55 SvcIdentity svc; 56 } ObjContent; 57 58 typedef struct { 59 ObjType type; 60 ObjContent content; 61 } SpecialObj; 62 63 typedef enum { MT_REQUEST, MT_REPLY, MT_FAILED_REPLY, MT_DEATH_NOTIFY } MsgType; 64 typedef enum { CMS_GEN_HANDLE, CMS_REMOVE_HANDLE, CMS_ADD_ACCESS } CmsCmd; 65 66 /* lite ipc ioctl */ 67 #define IPC_IOC_MAGIC 'i' 68 #define IPC_SET_CMS _IO(IPC_IOC_MAGIC, 1) 69 #define IPC_CMS_CMD _IOWR(IPC_IOC_MAGIC, 2, CmsCmdContent) 70 #define IPC_SET_IPC_THREAD _IO(IPC_IOC_MAGIC, 3) 71 #define IPC_SEND_RECV_MSG _IOWR(IPC_IOC_MAGIC, 4, IpcContent) 72 73 typedef struct { 74 CmsCmd cmd; 75 uint32_t taskID; 76 uint32_t serviceHandle; 77 } CmsCmdContent; 78 79 typedef struct { 80 MsgType type; /**< cmd type, decide the data structure below */ 81 SvcIdentity target; /**< serviceHandle or targetTaskId, depending on type */ 82 uint32_t code; 83 uint32_t flag; 84 #if (USE_TIMESTAMP == 1) 85 uint64_t timestamp; 86 #endif 87 uint32_t dataSz; /**< size of data */ 88 void* data; 89 uint32_t spObjNum; 90 void* offsets; 91 uint32_t processID; /**< filled by kernel, processId of sender/receiver */ 92 uint32_t taskID; /**< filled by kernel, taskId of sender/receiver */ 93 #ifdef LOSCFG_SECURITY_CAPABILITY 94 uint32_t userID; 95 uint32_t gid; 96 #endif 97 } IpcMsg; 98 99 #define SEND (1 << 0) 100 #define RECV (1 << 1) 101 #define BUFF_FREE (1 << 2) 102 103 typedef struct { 104 uint32_t flag; 105 IpcMsg *outMsg; /**< data to send to target */ 106 IpcMsg *inMsg; /**< data reply by target */ 107 void *buffToFree; 108 } IpcContent; 109 110 #endif //_LITEIPC_H