145 lines
3.7 KiB
C
145 lines
3.7 KiB
C
/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#define MKID(a, b, c, d) ((a) | ((b) << 8) | ((c) << 16) | ((d) << 24))
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#define ID_LSTAT_V1 MKID('S', 'T', 'A', 'T')
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#define ID_STAT_V2 MKID('S', 'T', 'A', '2')
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#define ID_LSTAT_V2 MKID('L', 'S', 'T', '2')
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#define ID_LIST_V1 MKID('L', 'I', 'S', 'T')
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#define ID_LIST_V2 MKID('L', 'I', 'S', '2')
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#define ID_DENT_V1 MKID('D', 'E', 'N', 'T')
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#define ID_DENT_V2 MKID('D', 'N', 'T', '2')
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#define ID_SEND_V1 MKID('S', 'E', 'N', 'D')
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#define ID_SEND_V2 MKID('S', 'N', 'D', '2')
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#define ID_RECV_V1 MKID('R', 'E', 'C', 'V')
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#define ID_RECV_V2 MKID('R', 'C', 'V', '2')
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#define ID_DONE MKID('D', 'O', 'N', 'E')
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#define ID_DATA MKID('D', 'A', 'T', 'A')
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#define ID_OKAY MKID('O', 'K', 'A', 'Y')
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#define ID_FAIL MKID('F', 'A', 'I', 'L')
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#define ID_QUIT MKID('Q', 'U', 'I', 'T')
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struct SyncRequest {
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uint32_t id; // ID_STAT, et cetera.
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uint32_t path_length; // <= 1024
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// Followed by 'path_length' bytes of path (not NUL-terminated).
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} __attribute__((packed));
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struct __attribute__((packed)) sync_stat_v1 {
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uint32_t id;
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uint32_t mode;
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uint32_t size;
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uint32_t mtime;
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};
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struct __attribute__((packed)) sync_stat_v2 {
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uint32_t id;
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uint32_t error;
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uint64_t dev;
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uint64_t ino;
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uint32_t mode;
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uint32_t nlink;
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uint32_t uid;
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uint32_t gid;
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uint64_t size;
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int64_t atime;
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int64_t mtime;
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int64_t ctime;
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};
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struct __attribute__((packed)) sync_dent_v1 {
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uint32_t id;
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uint32_t mode;
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uint32_t size;
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uint32_t mtime;
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uint32_t namelen;
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}; // followed by `namelen` bytes of the name.
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struct __attribute__((packed)) sync_dent_v2 {
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uint32_t id;
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uint32_t error;
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uint64_t dev;
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uint64_t ino;
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uint32_t mode;
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uint32_t nlink;
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uint32_t uid;
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uint32_t gid;
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uint64_t size;
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int64_t atime;
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int64_t mtime;
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int64_t ctime;
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uint32_t namelen;
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}; // followed by `namelen` bytes of the name.
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enum SyncFlag : uint32_t {
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kSyncFlagNone = 0,
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kSyncFlagBrotli = 1,
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kSyncFlagLZ4 = 2,
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kSyncFlagZstd = 4,
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kSyncFlagDryRun = 0x8000'0000U,
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};
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enum class CompressionType {
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None,
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Any,
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Brotli,
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LZ4,
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Zstd,
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};
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// send_v1 sent the path in a buffer, followed by a comma and the mode as a string.
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// send_v2 sends just the path in the first request, and then sends another syncmsg (with the
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// same ID!) with details.
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struct __attribute__((packed)) sync_send_v2 {
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uint32_t id;
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uint32_t mode;
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uint32_t flags;
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};
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// Likewise, recv_v1 just sent the path without any accompanying data.
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struct __attribute__((packed)) sync_recv_v2 {
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uint32_t id;
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uint32_t flags;
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};
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struct __attribute__((packed)) sync_data {
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uint32_t id;
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uint32_t size;
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}; // followed by `size` bytes of data.
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struct __attribute__((packed)) sync_status {
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uint32_t id;
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uint32_t msglen;
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}; // followed by `msglen` bytes of error message, if id == ID_FAIL.
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union syncmsg {
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sync_stat_v1 stat_v1;
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sync_stat_v2 stat_v2;
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sync_dent_v1 dent_v1;
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sync_dent_v2 dent_v2;
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sync_data data;
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sync_status status;
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sync_send_v2 send_v2_setup;
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sync_recv_v2 recv_v2_setup;
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};
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#define SYNC_DATA_MAX (64 * 1024)
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