1 718b3ab0 2018-03-17 stsp /*
 2 718b3ab0 2018-03-17 stsp  * Copyright (c) 2018 Stefan Sperling <stsp@openbsd.org>
 3 718b3ab0 2018-03-17 stsp  *
 4 718b3ab0 2018-03-17 stsp  * Permission to use, copy, modify, and distribute this software for any
 5 718b3ab0 2018-03-17 stsp  * purpose with or without fee is hereby granted, provided that the above
 6 718b3ab0 2018-03-17 stsp  * copyright notice and this permission notice appear in all copies.
 7 718b3ab0 2018-03-17 stsp  *
 8 718b3ab0 2018-03-17 stsp  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 9 718b3ab0 2018-03-17 stsp  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 718b3ab0 2018-03-17 stsp  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 718b3ab0 2018-03-17 stsp  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 718b3ab0 2018-03-17 stsp  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 718b3ab0 2018-03-17 stsp  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 718b3ab0 2018-03-17 stsp  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 718b3ab0 2018-03-17 stsp  */
16 718b3ab0 2018-03-17 stsp 
17 718b3ab0 2018-03-17 stsp struct got_worktree {
18 718b3ab0 2018-03-17 stsp 	char *root_path;
19 718b3ab0 2018-03-17 stsp 	char *repo_path;
20 718b3ab0 2018-03-17 stsp 	char *path_prefix;
21 718b3ab0 2018-03-17 stsp 	char *base_commit;
22 718b3ab0 2018-03-17 stsp 	char *head_ref;
23 718b3ab0 2018-03-17 stsp 
24 718b3ab0 2018-03-17 stsp 	/*
25 718b3ab0 2018-03-17 stsp 	 * File descriptor for the lock file, open while a work tree is open.
26 718b3ab0 2018-03-17 stsp 	 * When a work tree is opened, a shared lock on the lock file is
27 718b3ab0 2018-03-17 stsp 	 * acquired with flock(2). This shared lock is held until the work
28 718b3ab0 2018-03-17 stsp 	 * tree is closed, i.e. throughout the lifetime of any operation
29 718b3ab0 2018-03-17 stsp 	 * which uses a work tree.
30 718b3ab0 2018-03-17 stsp 	 * Before any modifications are made to the on-disk state of work
31 718b3ab0 2018-03-17 stsp 	 * tree meta data, tracked files, or directory tree structure, this
32 718b3ab0 2018-03-17 stsp 	 * shared lock must be upgraded to an exclusive lock.
33 718b3ab0 2018-03-17 stsp 	 */
34 718b3ab0 2018-03-17 stsp 	int lockfd;
35 718b3ab0 2018-03-17 stsp };
36 718b3ab0 2018-03-17 stsp 
37 718b3ab0 2018-03-17 stsp #define GOT_WORKTREE_GOT_DIR		".got"
38 718b3ab0 2018-03-17 stsp #define GOT_WORKTREE_FILE_INDEX		"fileindex"
39 718b3ab0 2018-03-17 stsp #define GOT_WORKTREE_REPOSITORY		"repository"
40 718b3ab0 2018-03-17 stsp #define GOT_WORKTREE_PATH_PREFIX	"path-prefix"
41 718b3ab0 2018-03-17 stsp #define GOT_WORKTREE_HEAD		"head"
42 718b3ab0 2018-03-17 stsp #define GOT_WORKTREE_LOCK		"lock"
43 718b3ab0 2018-03-17 stsp #define GOT_WORKTREE_FORMAT		"format"
44 718b3ab0 2018-03-17 stsp 
45 718b3ab0 2018-03-17 stsp #define GOT_WORKTREE_FORMAT_VERSION	1
46 718b3ab0 2018-03-17 stsp #define GOT_WORKTREE_INVALID_COMMIT_ID	GOT_SHA1_STRING_ZERO