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      1 /*
      2  * Copyright (C) 2007 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 #ifndef _FILE_SYNC_SERVICE_H_
     18 #define _FILE_SYNC_SERVICE_H_
     19 
     20 #include <string>
     21 #include <vector>
     22 
     23 #define MKID(a,b,c,d) ((a) | ((b) << 8) | ((c) << 16) | ((d) << 24))
     24 
     25 #define ID_LSTAT_V1 MKID('S','T','A','T')
     26 #define ID_STAT_V2 MKID('S','T','A','2')
     27 #define ID_LSTAT_V2 MKID('L','S','T','2')
     28 #define ID_LIST MKID('L','I','S','T')
     29 #define ID_SEND MKID('S','E','N','D')
     30 #define ID_RECV MKID('R','E','C','V')
     31 #define ID_DENT MKID('D','E','N','T')
     32 #define ID_DONE MKID('D','O','N','E')
     33 #define ID_DATA MKID('D','A','T','A')
     34 #define ID_OKAY MKID('O','K','A','Y')
     35 #define ID_FAIL MKID('F','A','I','L')
     36 #define ID_QUIT MKID('Q','U','I','T')
     37 
     38 struct SyncRequest {
     39     uint32_t id;  // ID_STAT, et cetera.
     40     uint32_t path_length;  // <= 1024
     41     // Followed by 'path_length' bytes of path (not NUL-terminated).
     42 } __attribute__((packed)) ;
     43 
     44 union syncmsg {
     45     struct __attribute__((packed)) {
     46         uint32_t id;
     47         uint32_t mode;
     48         uint32_t size;
     49         uint32_t time;
     50     } stat_v1;
     51     struct __attribute__((packed)) {
     52         uint32_t id;
     53         uint32_t error;
     54         uint64_t dev;
     55         uint64_t ino;
     56         uint32_t mode;
     57         uint32_t nlink;
     58         uint32_t uid;
     59         uint32_t gid;
     60         uint64_t size;
     61         int64_t atime;
     62         int64_t mtime;
     63         int64_t ctime;
     64     } stat_v2;
     65     struct __attribute__((packed)) {
     66         uint32_t id;
     67         uint32_t mode;
     68         uint32_t size;
     69         uint32_t time;
     70         uint32_t namelen;
     71     } dent;
     72     struct __attribute__((packed)) {
     73         uint32_t id;
     74         uint32_t size;
     75     } data;
     76     struct __attribute__((packed)) {
     77         uint32_t id;
     78         uint32_t msglen;
     79     } status;
     80 };
     81 
     82 void file_sync_service(int fd, void* cookie);
     83 bool do_sync_ls(const char* path);
     84 bool do_sync_push(const std::vector<const char*>& srcs, const char* dst, bool sync);
     85 bool do_sync_pull(const std::vector<const char*>& srcs, const char* dst,
     86                   bool copy_attrs, const char* name=nullptr);
     87 
     88 bool do_sync_sync(const std::string& lpath, const std::string& rpath, bool list_only);
     89 
     90 #define SYNC_DATA_MAX (64*1024)
     91 
     92 #endif
     93