[PATCH 06/10] object-file API: replace some use of check_object_signature()

["Ævar Arnfjörð Bjarmason" <avarab@gmail.com>]

Add a "hash_object_file_literally()" function to go with the existing
"hash_object_file()" function. This is currently a wrapper for its
sibling, but this change will allow us to change it to take an "enum
object_type" in a subsequent commit.

The only caller that wanted to pass a custom type to
"check_object_signature()" was the "git fsck" via its
"read_loose_object()", which is being changed here.

There was an existing hash_object_file_literally() which I'm renaming
to "hash_write_object_file_literally()", that function is only used
for "hash-object --literally". That renaming is being done because it
would be confusing to have a "hash_object_file_literally()" and a
"hash_object_file()" that do very different things.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
---
 builtin/hash-object.c |  4 ++--
 object-file.c         | 18 +++++++++++++-----
 object-store.h        |  6 +++---
 3 files changed, 18 insertions(+), 10 deletions(-)

diff --git a/builtin/hash-object.c b/builtin/hash-object.c
index c7b3ad74c60..624e9e677fb 100644
--- a/builtin/hash-object.c
+++ b/builtin/hash-object.c
@@ -25,8 +25,8 @@ static int hash_literally(struct object_id *oid, int fd, const char *type, unsig
 	if (strbuf_read(&buf, fd, 4096) < 0)
 		ret = -1;
 	else
-		ret = hash_object_file_literally(buf.buf, buf.len, type, oid,
-						 flags);
+		ret = hash_write_object_file_literally(buf.buf, buf.len, type, oid,
+						       flags);
 	strbuf_release(&buf);
 	return ret;
 }
diff --git a/object-file.c b/object-file.c
index 27d10112960..9fc959fa05d 100644
--- a/object-file.c
+++ b/object-file.c
@@ -1862,6 +1862,13 @@ void hash_object_file(const struct git_hash_algo *algo, const void *buf,
 	write_object_file_prepare(algo, buf, len, type, oid, hdr, &hdrlen);
 }
 
+static void hash_object_file_literally(const struct git_hash_algo *algo, const void *buf,
+				       unsigned long len, const char *type,
+				       struct object_id *oid)
+{
+	hash_object_file(algo, buf, len, type, oid);
+}
+
 int hash_object_file_oideq(const struct git_hash_algo *algo, const void *buf,
 			   unsigned long len, enum object_type type,
 			   const struct object_id *oid,
@@ -2043,9 +2050,9 @@ int write_object_file_flags(const void *buf, unsigned long len,
 	return write_loose_object(oid, hdr, hdrlen, buf, len, 0, flags);
 }
 
-int hash_object_file_literally(const void *buf, unsigned long len,
-			       const char *type, struct object_id *oid,
-			       unsigned flags)
+int hash_write_object_file_literally(const void *buf, unsigned long len,
+				     const char *type, struct object_id *oid,
+				     unsigned flags)
 {
 	char *header;
 	int hdrlen, status = 0;
@@ -2630,9 +2637,10 @@ int read_loose_object(const char *path,
 			git_inflate_end(&stream);
 			goto out;
 		}
-		if (check_object_signature(the_repository, expected_oid,
+		hash_object_file_literally(the_repository->hash_algo,
 					   *contents, *size,
-					   oi->type_name->buf, real_oid))
+					   oi->type_name->buf, real_oid);
+		if (!oideq(expected_oid, real_oid))
 			goto out;
 	}
 
diff --git a/object-store.h b/object-store.h
index 95907062682..2ddc20b3304 100644
--- a/object-store.h
+++ b/object-store.h
@@ -272,9 +272,9 @@ static inline int write_object_file(const void *buf, unsigned long len,
 	return write_object_file_flags(buf, len, type, oid, 0);
 }
 
-int hash_object_file_literally(const void *buf, unsigned long len,
-			       const char *type, struct object_id *oid,
-			       unsigned flags);
+int hash_write_object_file_literally(const void *buf, unsigned long len,
+				     const char *type, struct object_id *oid,
+				     unsigned flags);
 
 /*
  * Add an object file to the in-memory object store, without writing it
-- 
2.35.0.913.g12b4baa2536