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);
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