refs: update ref transactions to use struct object_id
[git/git.git] / connected.h
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1#ifndef CONNECTED_H
2#define CONNECTED_H
3
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4struct transport;
5
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6/*
7 * Take callback data, and return next object name in the buffer.
8 * When called after returning the name for the last object, return -1
9 * to signal EOF, otherwise return 0.
10 */
11typedef int (*sha1_iterate_fn)(void *, unsigned char [20]);
12
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13/*
14 * Named-arguments struct for check_connected. All arguments are
15 * optional, and can be left to defaults as set by CHECK_CONNECTED_INIT.
16 */
17struct check_connected_options {
18 /* Avoid printing any errors to stderr. */
19 int quiet;
20
21 /* --shallow-file to pass to rev-list sub-process */
22 const char *shallow_file;
23
24 /* Transport whose objects we are checking, if available. */
25 struct transport *transport;
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26
27 /*
28 * If non-zero, send error messages to this descriptor rather
29 * than stderr. The descriptor is closed before check_connected
30 * returns.
31 */
32 int err_fd;
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33
34 /* If non-zero, show progress as we traverse the objects. */
35 int progress;
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36
37 /*
38 * Insert these variables into the environment of the child process.
39 */
40 const char **env;
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41};
42
43#define CHECK_CONNECTED_INIT { 0 }
44
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45/*
46 * Make sure that our object store has all the commits necessary to
47 * connect the ancestry chain to some of our existing refs, and all
48 * the trees and blobs that these commits use.
49 *
50 * Return 0 if Ok, non zero otherwise (i.e. some missing objects)
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51 *
52 * If "opt" is NULL, behaves as if CHECK_CONNECTED_INIT was passed.
f96400cb 53 */
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54int check_connected(sha1_iterate_fn fn, void *cb_data,
55 struct check_connected_options *opt);
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56
57#endif /* CONNECTED_H */