From 0a1bc12b6e401825f009ac8bb14fc438f77e2d9f Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Nguy=E1=BB=85n=20Th=C3=A1i=20Ng=E1=BB=8Dc=20Duy?= Date: Thu, 5 Dec 2013 20:02:47 +0700 Subject: receive-pack: allow pushes that update .git/shallow MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The basic 8 steps to update .git/shallow does not fully apply here because the user may choose to accept just a few refs (while fetch always accepts all refs). The steps are modified a bit. 1-6. same as before. After calling assign_shallow_commits_to_refs at step 6, each shallow commit has a bitmap that marks all refs that require it. 7. mark all "ours" shallow commits that are reachable from any refs. We will need to do the original step 7 on them later. 8. go over all shallow commit bitmaps, mark refs that require new shallow commits. 9. setup a strict temporary shallow file to plug all the holes, even if it may cut some of our history short. This file is used by all hooks. The hooks could use --shallow-file=$GIT_DIR/shallow to overcome this and reach everything in current repo. 10. go over the new refs one by one. For each ref, do the reachability test if it needs a shallow commit on the list from step 7. Remove it if it's reachable from our refs. Gather all required shallow commits, run check_everything_connected() with the new ref, then install them to .git/shallow. This mode is disabled by default and can be turned on with receive.shallowupdate Signed-off-by: Nguyễn Thái Ngọc Duy Signed-off-by: Junio C Hamano --- shallow.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to 'shallow.c') diff --git a/shallow.c b/shallow.c index ec9179480f..3c36dd82bc 100644 --- a/shallow.c +++ b/shallow.c @@ -617,3 +617,26 @@ static void post_assign_shallow(struct shallow_info *info, free(ca.commits); } + +/* (Delayed) step 7, reachability test at commit level */ +int delayed_reachability_test(struct shallow_info *si, int c) +{ + if (si->need_reachability_test[c]) { + struct commit *commit = lookup_commit(si->shallow->sha1[c]); + + if (!si->commits) { + struct commit_array ca; + memset(&ca, 0, sizeof(ca)); + head_ref(add_ref, &ca); + for_each_ref(add_ref, &ca); + si->commits = ca.commits; + si->nr_commits = ca.nr; + } + + si->reachable[c] = in_merge_bases_many(commit, + si->nr_commits, + si->commits); + si->need_reachability_test[c] = 0; + } + return si->reachable[c]; +} -- cgit v1.2.1