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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 #pragma once
18 
19 #define MKID(a, b, c, d) ((a) | ((b) << 8) | ((c) << 16) | ((d) << 24))
20 
21 #define ID_LSTAT_V1 MKID('S', 'T', 'A', 'T')
22 #define ID_STAT_V2 MKID('S', 'T', 'A', '2')
23 #define ID_LSTAT_V2 MKID('L', 'S', 'T', '2')
24 #define ID_LIST MKID('L', 'I', 'S', 'T')
25 #define ID_SEND MKID('S', 'E', 'N', 'D')
26 #define ID_RECV MKID('R', 'E', 'C', 'V')
27 #define ID_DENT MKID('D', 'E', 'N', 'T')
28 #define ID_DONE MKID('D', 'O', 'N', 'E')
29 #define ID_DATA MKID('D', 'A', 'T', 'A')
30 #define ID_OKAY MKID('O', 'K', 'A', 'Y')
31 #define ID_FAIL MKID('F', 'A', 'I', 'L')
32 #define ID_QUIT MKID('Q', 'U', 'I', 'T')
33 
34 struct SyncRequest {
35     uint32_t id;           // ID_STAT, et cetera.
36     uint32_t path_length;  // <= 1024
37     // Followed by 'path_length' bytes of path (not NUL-terminated).
38 } __attribute__((packed));
39 
40 union syncmsg {
41     struct __attribute__((packed)) {
42         uint32_t id;
43         uint32_t mode;
44         uint32_t size;
45         uint32_t time;
46     } stat_v1;
47     struct __attribute__((packed)) {
48         uint32_t id;
49         uint32_t error;
50         uint64_t dev;
51         uint64_t ino;
52         uint32_t mode;
53         uint32_t nlink;
54         uint32_t uid;
55         uint32_t gid;
56         uint64_t size;
57         int64_t atime;
58         int64_t mtime;
59         int64_t ctime;
60     } stat_v2;
61     struct __attribute__((packed)) {
62         uint32_t id;
63         uint32_t mode;
64         uint32_t size;
65         uint32_t time;
66         uint32_t namelen;
67     } dent;
68     struct __attribute__((packed)) {
69         uint32_t id;
70         uint32_t size;
71     } data;
72     struct __attribute__((packed)) {
73         uint32_t id;
74         uint32_t msglen;
75     } status;
76 };
77 
78 #define SYNC_DATA_MAX (64 * 1024)
79