Merge branch 'tb/idx-midx-race-fix'

Processes that access packdata while the .idx file gets removed
(e.g. while repacking) did not fail or fall back gracefully as they
could.

* tb/idx-midx-race-fix:
  midx.c: protect against disappearing packs
  packfile.c: protect against disappearing indexes

1 files changed, 2 insertions, 17 deletions

diff --git a/packfile.c b/packfile.c
index 9702b12..86f5c8d 100644
--- a/packfile.c
+++ b/packfile.c
@@ -514,19 +514,8 @@ static int open_packed_git_1(struct packed_git *p)
 	ssize_t read_result;
 	const unsigned hashsz = the_hash_algo->rawsz;
 
-	if (!p->index_data) {
-		struct multi_pack_index *m;
-		const char *pack_name = pack_basename(p);
-
-		for (m = the_repository->objects->multi_pack_index;
-		     m; m = m->next) {
-			if (midx_contains_pack(m, pack_name))
-				break;
-		}
-
-		if (!m && open_pack_index(p))
-			return error("packfile %s index unavailable", p->pack_name);
-	}
+	if (open_pack_index(p))
+		return error("packfile %s index unavailable", p->pack_name);
 
 	if (!pack_max_fds) {
 		unsigned int max_fds = get_max_fd_limit();
@@ -567,10 +556,6 @@ static int open_packed_git_1(struct packed_git *p)
 			" supported (try upgrading GIT to a newer version)",
 			p->pack_name, ntohl(hdr.hdr_version));
 
-	/* Skip index checking if in multi-pack-index */
-	if (!p->index_data)
-		return 0;
-
 	/* Verify the pack matches its index. */
 	if (p->num_objects != ntohl(hdr.hdr_entries))
 		return error("packfile %s claims to have %"PRIu32" objects"