1 /*
2  * Copyright (c) 2018 Stefan Sperling <stsp@openbsd.org>
3  *
4  * Permission to use, copy, modify, and distribute this software for any
5  * purpose with or without fee is hereby granted, provided that the above
6  * copyright notice and this permission notice appear in all copies.
7  *
8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15  */
16 
17 /* 
18  * Meta data about a tracked on-disk file.
19  *
20  * Note that some fields are truncated results from stat(2). These are only
21  * used in order to detect modifications made to on-disk files, they are
22  * never written back to the filesystem.
23  */
24 struct got_index_entry {
25 	uint32_t ctime_sec;
26 	uint32_t ctime_nsec;
27 	uint32_t mtime_sec;
28 	uint32_t mtime_nsec;
29 	uint32_t dev;
30 	uint32_t ino;
31 	uint32_t mode;
32 #define GOT_INDEX_ENTRY_MODE_OBJ_TYPE	0x0000000f
33 #define GOT_INDEX_ENTRY_MODE_PERMS	0x0000ff10
34 	uint32_t uid;
35 	uint32_t gid;
36 	uint32_t size;
37 	uint8_t obj_sha1[SHA1_DIGEST_LENGTH];
38 	uint16_t flags;
39 #define GOT_INDEX_ENTRY_F_NAME_LEN	0x0fff
40 #define GOT_INDEX_ENTRY_F_STAGE		0x3000
41 #define GOT_INDEX_ENTRY_F_EXTENDED	0x4000
42 #define GOT_INDEX_ENTRY_F_ASSUME_VALID	0x8000
43 
44 	/* This is a unix-style path relative to top level directory. */
45 	const char *path;
46 };
47 
48 struct got_index {
49 	uint32_t signature;
50 	uint32_t version;
51 	uint32_t nentries;
52 	struct got_index_entry *entries;
53 	/* extensions go here */
54 	uint8_t sha1[SHA1_DIGEST_LENGTH];
55 };