commit-graph, fuzz: add fuzzer for commit-graph

diff --git a/worktree.c b/worktree.c
index 4193496f2a01b0d5dcfd7c48448a1a27644f7068..d6a0ee7f730d96a7e8cc04095ddafb43c937105a 100644 (file)
--- a/worktree.c
+++ b/worktree.c
@@ -235,7 +235,7 @@ int is_main_worktree(const struct worktree *wt)
        return !wt->id;
 }
 
-const char *is_worktree_locked(struct worktree *wt)
+const char *worktree_lock_reason(struct worktree *wt)
 {
        assert(!is_main_worktree(wt));
 
@@ -517,6 +517,45 @@ int parse_worktree_ref(const char *worktree_ref, const char **name,
        return -1;
 }
 
+void strbuf_worktree_ref(const struct worktree *wt,
+                        struct strbuf *sb,
+                        const char *refname)
+{
+       switch (ref_type(refname)) {
+       case REF_TYPE_PSEUDOREF:
+       case REF_TYPE_PER_WORKTREE:
+               if (wt && !wt->is_current) {
+                       if (is_main_worktree(wt))
+                               strbuf_addstr(sb, "main-worktree/");
+                       else
+                               strbuf_addf(sb, "worktrees/%s/", wt->id);
+               }
+               break;
+
+       case REF_TYPE_MAIN_PSEUDOREF:
+       case REF_TYPE_OTHER_PSEUDOREF:
+               break;
+
+       case REF_TYPE_NORMAL:
+               /*
+                * For shared refs, don't prefix worktrees/ or
+                * main-worktree/. It's not necessary and
+                * files-backend.c can't handle it anyway.
+                */
+               break;
+       }
+       strbuf_addstr(sb, refname);
+}
+
+const char *worktree_ref(const struct worktree *wt, const char *refname)
+{
+       static struct strbuf sb = STRBUF_INIT;
+
+       strbuf_reset(&sb);
+       strbuf_worktree_ref(wt, &sb, refname);
+       return sb.buf;
+}
+
 int other_head_refs(each_ref_fn fn, void *cb_data)
 {
        struct worktree **worktrees, **p;
@@ -525,13 +564,17 @@ int other_head_refs(each_ref_fn fn, void *cb_data)
        worktrees = get_worktrees(0);
        for (p = worktrees; *p; p++) {
                struct worktree *wt = *p;
-               struct ref_store *refs;
+               struct object_id oid;
+               int flag;
 
                if (wt->is_current)
                        continue;
 
-               refs = get_worktree_ref_store(wt);
-               ret = refs_head_ref(refs, fn, cb_data);
+               if (!refs_read_ref_full(get_main_ref_store(the_repository),
+                                       worktree_ref(wt, "HEAD"),
+                                       RESOLVE_REF_READING,
+                                       &oid, &flag))
+                       ret = fn(worktree_ref(wt, "HEAD"), &oid, flag, cb_data);
                if (ret)
                        break;
        }