diff --git a/Documentation/git-multi-pack-index.txt b/Documentation/git-multi-pack-index.txt
index c9b063d31e..0af6beb2dd 100644
--- a/Documentation/git-multi-pack-index.txt
+++ b/Documentation/git-multi-pack-index.txt
@@ -23,6 +23,8 @@ OPTIONS
Use given directory for the location of Git objects. We check
`
/packs/multi-pack-index` for the current MIDX file, and
`/packs` for the pack-files to index.
++
+`` must be an alternate of the current repository.
--[no-]progress::
Turn progress on/off explicitly. If neither is specified, progress is
diff --git a/builtin/commit-graph.c b/builtin/commit-graph.c
index cd86315221..003eaaac5c 100644
--- a/builtin/commit-graph.c
+++ b/builtin/commit-graph.c
@@ -43,28 +43,6 @@ static struct opts_commit_graph {
int enable_changed_paths;
} opts;
-static struct object_directory *find_odb(struct repository *r,
- const char *obj_dir)
-{
- struct object_directory *odb;
- char *obj_dir_real = real_pathdup(obj_dir, 1);
- struct strbuf odb_path_real = STRBUF_INIT;
-
- prepare_alt_odb(r);
- for (odb = r->objects->odb; odb; odb = odb->next) {
- strbuf_realpath(&odb_path_real, odb->path, 1);
- if (!strcmp(obj_dir_real, odb_path_real.buf))
- break;
- }
-
- free(obj_dir_real);
- strbuf_release(&odb_path_real);
-
- if (!odb)
- die(_("could not find object directory matching %s"), obj_dir);
- return odb;
-}
-
static int graph_verify(int argc, const char **argv)
{
struct commit_graph *graph = NULL;
diff --git a/midx.c b/midx.c
index e83f22b5ee..25906044ff 100644
--- a/midx.c
+++ b/midx.c
@@ -893,7 +893,7 @@ static int midx_checksum_valid(struct multi_pack_index *m)
return hashfile_checksum_valid(m->data, m->data_len);
}
-static int write_midx_internal(const char *object_dir, struct multi_pack_index *m,
+static int write_midx_internal(const char *object_dir,
struct string_list *packs_to_drop,
const char *preferred_pack_name,
unsigned flags)
@@ -904,20 +904,26 @@ static int write_midx_internal(const char *object_dir, struct multi_pack_index *
struct hashfile *f = NULL;
struct lock_file lk;
struct write_midx_context ctx = { 0 };
+ struct multi_pack_index *cur;
int pack_name_concat_len = 0;
int dropped_packs = 0;
int result = 0;
struct chunkfile *cf;
+ /* Ensure the given object_dir is local, or a known alternate. */
+ find_odb(the_repository, object_dir);
+
midx_name = get_midx_filename(object_dir);
if (safe_create_leading_directories(midx_name))
die_errno(_("unable to create leading directories of %s"),
midx_name);
- if (m)
- ctx.m = m;
- else
- ctx.m = load_multi_pack_index(object_dir, 1);
+ for (cur = get_multi_pack_index(the_repository); cur; cur = cur->next) {
+ if (!strcmp(object_dir, cur->object_dir)) {
+ ctx.m = cur;
+ break;
+ }
+ }
if (ctx.m && !midx_checksum_valid(ctx.m)) {
warning(_("ignoring existing multi-pack-index; checksum mismatch"));
@@ -1119,7 +1125,7 @@ static int write_midx_internal(const char *object_dir, struct multi_pack_index *
f = hashfd(get_lock_file_fd(&lk), get_lock_file_path(&lk));
if (ctx.m)
- close_midx(ctx.m);
+ close_object_store(the_repository->objects);
if (ctx.nr - dropped_packs == 0) {
error(_("no pack files to index."));
@@ -1182,8 +1188,7 @@ int write_midx_file(const char *object_dir,
const char *preferred_pack_name,
unsigned flags)
{
- return write_midx_internal(object_dir, NULL, NULL, preferred_pack_name,
- flags);
+ return write_midx_internal(object_dir, NULL, preferred_pack_name, flags);
}
struct clear_midx_data {
@@ -1461,8 +1466,10 @@ int expire_midx_packs(struct repository *r, const char *object_dir, unsigned fla
free(count);
- if (packs_to_drop.nr)
- result = write_midx_internal(object_dir, m, &packs_to_drop, NULL, flags);
+ if (packs_to_drop.nr) {
+ result = write_midx_internal(object_dir, &packs_to_drop, NULL, flags);
+ m = NULL;
+ }
string_list_clear(&packs_to_drop, 0);
return result;
@@ -1651,7 +1658,7 @@ int midx_repack(struct repository *r, const char *object_dir, size_t batch_size,
goto cleanup;
}
- result = write_midx_internal(object_dir, m, NULL, NULL, flags);
+ result = write_midx_internal(object_dir, NULL, NULL, flags);
m = NULL;
cleanup:
diff --git a/object-file.c b/object-file.c
index a8be899481..a4d720b4f5 100644
--- a/object-file.c
+++ b/object-file.c
@@ -820,6 +820,27 @@ char *compute_alternate_path(const char *path, struct strbuf *err)
return ref_git;
}
+struct object_directory *find_odb(struct repository *r, const char *obj_dir)
+{
+ struct object_directory *odb;
+ char *obj_dir_real = real_pathdup(obj_dir, 1);
+ struct strbuf odb_path_real = STRBUF_INIT;
+
+ prepare_alt_odb(r);
+ for (odb = r->objects->odb; odb; odb = odb->next) {
+ strbuf_realpath(&odb_path_real, odb->path, 1);
+ if (!strcmp(obj_dir_real, odb_path_real.buf))
+ break;
+ }
+
+ free(obj_dir_real);
+ strbuf_release(&odb_path_real);
+
+ if (!odb)
+ die(_("could not find object directory matching %s"), obj_dir);
+ return odb;
+}
+
static void fill_alternate_refs_command(struct child_process *cmd,
const char *repo_path)
{
diff --git a/object-store.h b/object-store.h
index d24915ced1..250aa5f33c 100644
--- a/object-store.h
+++ b/object-store.h
@@ -38,6 +38,7 @@ KHASH_INIT(odb_path_map, const char * /* key: odb_path */,
void prepare_alt_odb(struct repository *r);
char *compute_alternate_path(const char *path, struct strbuf *err);
+struct object_directory *find_odb(struct repository *r, const char *obj_dir);
typedef int alt_odb_fn(struct object_directory *, void *);
int foreach_alt_odb(alt_odb_fn, void*);
typedef void alternate_ref_fn(const struct object_id *oid, void *);
diff --git a/t/t5319-multi-pack-index.sh b/t/t5319-multi-pack-index.sh
index d7e4988f2b..bd09c3194b 100755
--- a/t/t5319-multi-pack-index.sh
+++ b/t/t5319-multi-pack-index.sh
@@ -582,7 +582,15 @@ test_expect_success 'force some 64-bit offsets with pack-objects' '
idx64=objects64/pack/test-64-$pack64.idx &&
chmod u+w $idx64 &&
corrupt_data $idx64 $(test_oid idxoff) "\02" &&
- midx64=$(git multi-pack-index --object-dir=objects64 write) &&
+ # objects64 is not a real repository, but can serve as an alternate
+ # anyway so we can write a MIDX into it
+ git init repo &&
+ test_when_finished "rm -fr repo" &&
+ (
+ cd repo &&
+ ( cd ../objects64 && pwd ) >.git/objects/info/alternates &&
+ midx64=$(git multi-pack-index --object-dir=../objects64 write)
+ ) &&
midx_read_expect 1 63 5 objects64 " large-offsets"
'