From e81153027857b0b0ed3dfa6a544df2beeac0cfce Mon Sep 17 00:00:00 2001 From: Han-Wen Nienhuys Date: Wed, 19 Aug 2020 14:27:58 +0000 Subject: [PATCH] refs: read FETCH_HEAD and MERGE_HEAD generically The FETCH_HEAD and MERGE_HEAD refs must be stored in a file, regardless of the type of ref backend. This is because they can hold more than just a single ref. To accomodate them for alternate ref backends, read them from a file generically in refs_read_raw_ref() Signed-off-by: Han-Wen Nienhuys Signed-off-by: Junio C Hamano --- refs.c | 28 +++++++++++++++++++++++++++- 1 file changed, 27 insertions(+), 1 deletion(-) diff --git a/refs.c b/refs.c index 9e28912f73..a2777793cf 100644 --- a/refs.c +++ b/refs.c @@ -1634,11 +1634,37 @@ int for_each_rawref(each_ref_fn fn, void *cb_data) return refs_for_each_rawref(get_main_ref_store(the_repository), fn, cb_data); } +static int refs_read_special_head(struct ref_store *ref_store, + const char *refname, struct object_id *oid, + struct strbuf *referent, unsigned int *type) +{ + struct strbuf full_path = STRBUF_INIT; + struct strbuf content = STRBUF_INIT; + int result = -1; + strbuf_addf(&full_path, "%s/%s", ref_store->gitdir, refname); + + if (strbuf_read_file(&content, full_path.buf, 0) < 0) + goto done; + + result = parse_loose_ref_contents(content.buf, oid, referent, type); + +done: + strbuf_release(&full_path); + strbuf_release(&content); + return result; +} + int refs_read_raw_ref(struct ref_store *ref_store, const char *refname, struct object_id *oid, struct strbuf *referent, unsigned int *type) { - return ref_store->be->read_raw_ref(ref_store, refname, oid, referent, type); + if (!strcmp(refname, "FETCH_HEAD") || !strcmp(refname, "MERGE_HEAD")) { + return refs_read_special_head(ref_store, refname, oid, referent, + type); + } + + return ref_store->be->read_raw_ref(ref_store, refname, oid, referent, + type); } /* This function needs to return a meaningful errno on failure */