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authorJunio C Hamano <gitster@pobox.com>2022-03-17 00:53:08 (GMT)
committerJunio C Hamano <gitster@pobox.com>2022-03-17 00:53:08 (GMT)
commit430883a70c79614e52279f2800a9a383ffc68fe5 (patch)
tree84a13eeaaa7f7231a55f02cb48d42c5951197fa5
parent8d1ae40bae1568be25dcc55679f1635b90d53d1b (diff)
parent6aea6baeb3ece6c832dbdf1deed09f41aebf85c2 (diff)
downloadgit-430883a70c79614e52279f2800a9a383ffc68fe5.zip
git-430883a70c79614e52279f2800a9a383ffc68fe5.tar.gz
git-430883a70c79614e52279f2800a9a383ffc68fe5.tar.bz2
Merge branch 'ab/object-file-api-updates'
Object-file API shuffling. * ab/object-file-api-updates: object-file API: pass an enum to read_object_with_reference() object-file.c: add a literal version of write_object_file_prepare() object-file API: have hash_object_file() take "enum object_type" object API: rename hash_object_file_literally() to write_*() object-file API: split up and simplify check_object_signature() object API users + docs: check <0, not !0 with check_object_signature() object API docs: move check_object_signature() docs to cache.h object API: correct "buf" v.s. "map" mismatch in *.c and *.h object-file API: have write_object_file() take "enum object_type" object-file API: add a format_object_header() function object-file API: return "void", not "int" from hash_object_file() object-file.c: split up declaration of unrelated variables
-rw-r--r--apply.c12
-rw-r--r--builtin/cat-file.c11
-rw-r--r--builtin/checkout.c2
-rw-r--r--builtin/fast-export.c2
-rw-r--r--builtin/fast-import.c12
-rw-r--r--builtin/grep.c4
-rw-r--r--builtin/hash-object.c2
-rw-r--r--builtin/index-pack.c10
-rw-r--r--builtin/mktag.c9
-rw-r--r--builtin/mktree.c2
-rw-r--r--builtin/notes.c2
-rw-r--r--builtin/pack-objects.c2
-rw-r--r--builtin/receive-pack.c2
-rw-r--r--builtin/replace.c4
-rw-r--r--builtin/tag.c2
-rw-r--r--builtin/unpack-objects.c8
-rw-r--r--bulk-checkin.c4
-rw-r--r--cache-tree.c8
-rw-r--r--cache.h20
-rw-r--r--commit.c2
-rw-r--r--convert.c2
-rw-r--r--diffcore-rename.c2
-rw-r--r--dir.c2
-rw-r--r--http-push.c2
-rw-r--r--log-tree.c2
-rw-r--r--match-trees.c2
-rw-r--r--merge-ort.c4
-rw-r--r--merge-recursive.c2
-rw-r--r--notes-cache.c2
-rw-r--r--notes.c8
-rw-r--r--object-file.c145
-rw-r--r--object-store.h24
-rw-r--r--object.c5
-rw-r--r--pack-check.c9
-rw-r--r--read-cache.c2
-rw-r--r--tree-walk.c6
36 files changed, 202 insertions, 137 deletions
diff --git a/apply.c b/apply.c
index 01f9181..d19c26d 100644
--- a/apply.c
+++ b/apply.c
@@ -3164,7 +3164,7 @@ static int apply_binary(struct apply_state *state,
* See if the old one matches what the patch
* applies to.
*/
- hash_object_file(the_hash_algo, img->buf, img->len, blob_type,
+ hash_object_file(the_hash_algo, img->buf, img->len, OBJ_BLOB,
&oid);
if (strcmp(oid_to_hex(&oid), patch->old_oid_prefix))
return error(_("the patch applies to '%s' (%s), "
@@ -3210,7 +3210,7 @@ static int apply_binary(struct apply_state *state,
name);
/* verify that the result matches */
- hash_object_file(the_hash_algo, img->buf, img->len, blob_type,
+ hash_object_file(the_hash_algo, img->buf, img->len, OBJ_BLOB,
&oid);
if (strcmp(oid_to_hex(&oid), patch->new_oid_prefix))
return error(_("binary patch to '%s' creates incorrect result (expecting %s, got %s)"),
@@ -3599,7 +3599,7 @@ static int try_threeway(struct apply_state *state,
/* Preimage the patch was prepared for */
if (patch->is_new)
- write_object_file("", 0, blob_type, &pre_oid);
+ write_object_file("", 0, OBJ_BLOB, &pre_oid);
else if (get_oid(patch->old_oid_prefix, &pre_oid) ||
read_blob_object(&buf, &pre_oid, patch->old_mode))
return error(_("repository lacks the necessary blob to perform 3-way merge."));
@@ -3615,7 +3615,7 @@ static int try_threeway(struct apply_state *state,
return -1;
}
/* post_oid is theirs */
- write_object_file(tmp_image.buf, tmp_image.len, blob_type, &post_oid);
+ write_object_file(tmp_image.buf, tmp_image.len, OBJ_BLOB, &post_oid);
clear_image(&tmp_image);
/* our_oid is ours */
@@ -3628,7 +3628,7 @@ static int try_threeway(struct apply_state *state,
return error(_("cannot read the current contents of '%s'"),
patch->old_name);
}
- write_object_file(tmp_image.buf, tmp_image.len, blob_type, &our_oid);
+ write_object_file(tmp_image.buf, tmp_image.len, OBJ_BLOB, &our_oid);
clear_image(&tmp_image);
/* in-core three-way merge between post and our using pre as base */
@@ -4328,7 +4328,7 @@ static int add_index_file(struct apply_state *state,
}
fill_stat_cache_info(state->repo->index, ce, &st);
}
- if (write_object_file(buf, size, blob_type, &ce->oid) < 0) {
+ if (write_object_file(buf, size, OBJ_BLOB, &ce->oid) < 0) {
discard_cache_entry(ce);
return error(_("unable to create backing store "
"for newly created file %s"), path);
diff --git a/builtin/cat-file.c b/builtin/cat-file.c
index e75e110..0663661 100644
--- a/builtin/cat-file.c
+++ b/builtin/cat-file.c
@@ -156,7 +156,10 @@ static int cat_one_file(int opt, const char *exp_type, const char *obj_name,
break;
case 0:
- if (type_from_string(exp_type) == OBJ_BLOB) {
+ {
+ enum object_type exp_type_id = type_from_string(exp_type);
+
+ if (exp_type_id == OBJ_BLOB) {
struct object_id blob_oid;
if (oid_object_info(the_repository, &oid, NULL) == OBJ_TAG) {
char *buffer = read_object_file(&oid, &type,
@@ -178,10 +181,10 @@ static int cat_one_file(int opt, const char *exp_type, const char *obj_name,
* fall-back to the usual case.
*/
}
- buf = read_object_with_reference(the_repository,
- &oid, exp_type, &size, NULL);
+ buf = read_object_with_reference(the_repository, &oid,
+ exp_type_id, &size, NULL);
break;
-
+ }
default:
die("git cat-file: unknown option: %s", exp_type);
}
diff --git a/builtin/checkout.c b/builtin/checkout.c
index 1afc077..7976814 100644
--- a/builtin/checkout.c
+++ b/builtin/checkout.c
@@ -303,7 +303,7 @@ static int checkout_merged(int pos, const struct checkout *state,
* (it also writes the merge result to the object database even
* when it may contain conflicts).
*/
- if (write_object_file(result_buf.ptr, result_buf.size, blob_type, &oid))
+ if (write_object_file(result_buf.ptr, result_buf.size, OBJ_BLOB, &oid))
die(_("Unable to add merge result for '%s'"), path);
free(result_buf.ptr);
ce = make_transient_cache_entry(mode, &oid, path, 2, ce_mem_pool);
diff --git a/builtin/fast-export.c b/builtin/fast-export.c
index 510139e..a7d7269 100644
--- a/builtin/fast-export.c
+++ b/builtin/fast-export.c
@@ -300,7 +300,7 @@ static void export_blob(const struct object_id *oid)
if (!buf)
die("could not read blob %s", oid_to_hex(oid));
if (check_object_signature(the_repository, oid, buf, size,
- type_name(type), NULL) < 0)
+ type) < 0)
die("oid mismatch in blob %s", oid_to_hex(oid));
object = parse_object_buffer(the_repository, oid, type,
size, buf, &eaten);
diff --git a/builtin/fast-import.c b/builtin/fast-import.c
index b7105fc..ad045c7 100644
--- a/builtin/fast-import.c
+++ b/builtin/fast-import.c
@@ -944,8 +944,8 @@ static int store_object(
git_hash_ctx c;
git_zstream s;
- hdrlen = xsnprintf((char *)hdr, sizeof(hdr), "%s %lu",
- type_name(type), (unsigned long)dat->len) + 1;
+ hdrlen = format_object_header((char *)hdr, sizeof(hdr), type,
+ dat->len);
the_hash_algo->init_fn(&c);
the_hash_algo->update_fn(&c, hdr, hdrlen);
the_hash_algo->update_fn(&c, dat->buf, dat->len);
@@ -1098,7 +1098,7 @@ static void stream_blob(uintmax_t len, struct object_id *oidout, uintmax_t mark)
hashfile_checkpoint(pack_file, &checkpoint);
offset = checkpoint.offset;
- hdrlen = xsnprintf((char *)out_buf, out_sz, "blob %" PRIuMAX, len) + 1;
+ hdrlen = format_object_header((char *)out_buf, out_sz, OBJ_BLOB, len);
the_hash_algo->init_fn(&c);
the_hash_algo->update_fn(&c, out_buf, hdrlen);
@@ -2490,7 +2490,7 @@ static void note_change_n(const char *p, struct branch *b, unsigned char *old_fa
unsigned long size;
char *buf = read_object_with_reference(the_repository,
&commit_oid,
- commit_type, &size,
+ OBJ_COMMIT, &size,
&commit_oid);
if (!buf || size < the_hash_algo->hexsz + 6)
die("Not a valid commit: %s", p);
@@ -2562,7 +2562,7 @@ static void parse_from_existing(struct branch *b)
char *buf;
buf = read_object_with_reference(the_repository,
- &b->oid, commit_type, &size,
+ &b->oid, OBJ_COMMIT, &size,
&b->oid);
parse_from_commit(b, buf, size);
free(buf);
@@ -2658,7 +2658,7 @@ static struct hash_list *parse_merge(unsigned int *count)
unsigned long size;
char *buf = read_object_with_reference(the_repository,
&n->oid,
- commit_type,
+ OBJ_COMMIT,
&size, &n->oid);
if (!buf || size < the_hash_algo->hexsz + 6)
die("Not a valid commit: %s", from);
diff --git a/builtin/grep.c b/builtin/grep.c
index f1a924e..bcb07ea 100644
--- a/builtin/grep.c
+++ b/builtin/grep.c
@@ -484,7 +484,7 @@ static int grep_submodule(struct grep_opt *opt,
object_type = oid_object_info(subrepo, oid, NULL);
obj_read_unlock();
data = read_object_with_reference(subrepo,
- oid, tree_type,
+ oid, OBJ_TREE,
&size, NULL);
if (!data)
die(_("unable to read tree (%s)"), oid_to_hex(oid));
@@ -653,7 +653,7 @@ static int grep_object(struct grep_opt *opt, const struct pathspec *pathspec,
int hit, len;
data = read_object_with_reference(opt->repo,
- &obj->oid, tree_type,
+ &obj->oid, OBJ_TREE,
&size, NULL);
if (!data)
die(_("unable to read tree (%s)"), oid_to_hex(&obj->oid));
diff --git a/builtin/hash-object.c b/builtin/hash-object.c
index 0837849..fbae878 100644
--- a/builtin/hash-object.c
+++ b/builtin/hash-object.c
@@ -25,7 +25,7 @@ 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,
+ ret = write_object_file_literally(buf.buf, buf.len, type, oid,
flags);
strbuf_release(&buf);
return ret;
diff --git a/builtin/index-pack.c b/builtin/index-pack.c
index 38fb4f4..2b2e6ee 100644
--- a/builtin/index-pack.c
+++ b/builtin/index-pack.c
@@ -453,8 +453,7 @@ static void *unpack_entry_data(off_t offset, unsigned long size,
int hdrlen;
if (!is_delta_type(type)) {
- hdrlen = xsnprintf(hdr, sizeof(hdr), "%s %"PRIuMAX,
- type_name(type),(uintmax_t)size) + 1;
+ hdrlen = format_object_header(hdr, sizeof(hdr), type, size);
the_hash_algo->init_fn(&c);
the_hash_algo->update_fn(&c, hdr, hdrlen);
} else
@@ -975,7 +974,7 @@ static struct base_data *resolve_delta(struct object_entry *delta_obj,
if (!result_data)
bad_object(delta_obj->idx.offset, _("failed to apply delta"));
hash_object_file(the_hash_algo, result_data, result_size,
- type_name(delta_obj->real_type), &delta_obj->idx.oid);
+ delta_obj->real_type, &delta_obj->idx.oid);
sha1_object(result_data, NULL, result_size, delta_obj->real_type,
&delta_obj->idx.oid);
@@ -1419,9 +1418,8 @@ static void fix_unresolved_deltas(struct hashfile *f)
if (!data)
continue;
- if (check_object_signature(the_repository, &d->oid,
- data, size,
- type_name(type), NULL))
+ if (check_object_signature(the_repository, &d->oid, data, size,
+ type) < 0)
die(_("local object %s is corrupt"), oid_to_hex(&d->oid));
/*
diff --git a/builtin/mktag.c b/builtin/mktag.c
index c7b905c..5d22909 100644
--- a/builtin/mktag.c
+++ b/builtin/mktag.c
@@ -61,9 +61,8 @@ static int verify_object_in_tag(struct object_id *tagged_oid, int *tagged_type)
type_name(*tagged_type), type_name(type));
repl = lookup_replace_object(the_repository, tagged_oid);
- ret = check_object_signature(the_repository, repl,
- buffer, size, type_name(*tagged_type),
- NULL);
+ ret = check_object_signature(the_repository, repl, buffer, size,
+ *tagged_type);
free(buffer);
return ret;
@@ -97,10 +96,10 @@ int cmd_mktag(int argc, const char **argv, const char *prefix)
&tagged_oid, &tagged_type))
die(_("tag on stdin did not pass our strict fsck check"));
- if (verify_object_in_tag(&tagged_oid, &tagged_type))
+ if (verify_object_in_tag(&tagged_oid, &tagged_type) < 0)
die(_("tag on stdin did not refer to a valid object"));
- if (write_object_file(buf.buf, buf.len, tag_type, &result) < 0)
+ if (write_object_file(buf.buf, buf.len, OBJ_TAG, &result) < 0)
die(_("unable to write tag file"));
strbuf_release(&buf);
diff --git a/builtin/mktree.c b/builtin/mktree.c
index 8bdaada..902edba 100644
--- a/builtin/mktree.c
+++ b/builtin/mktree.c
@@ -58,7 +58,7 @@ static void write_tree(struct object_id *oid)
strbuf_add(&buf, ent->oid.hash, the_hash_algo->rawsz);
}
- write_object_file(buf.buf, buf.len, tree_type, oid);
+ write_object_file(buf.buf, buf.len, OBJ_TREE, oid);
strbuf_release(&buf);
}
diff --git a/builtin/notes.c b/builtin/notes.c
index f99593a..a3d0d15 100644
--- a/builtin/notes.c
+++ b/builtin/notes.c
@@ -199,7 +199,7 @@ static void prepare_note_data(const struct object_id *object, struct note_data *
static void write_note_data(struct note_data *d, struct object_id *oid)
{
- if (write_object_file(d->buf.buf, d->buf.len, blob_type, oid)) {
+ if (write_object_file(d->buf.buf, d->buf.len, OBJ_BLOB, oid)) {
int status = die_message(_("unable to write note object"));
if (d->edit_path)
diff --git a/builtin/pack-objects.c b/builtin/pack-objects.c
index 178e611..47b0e1d 100644
--- a/builtin/pack-objects.c
+++ b/builtin/pack-objects.c
@@ -1802,7 +1802,7 @@ static void add_preferred_base(struct object_id *oid)
return;
data = read_object_with_reference(the_repository, oid,
- tree_type, &size, &tree_oid);
+ OBJ_TREE, &size, &tree_oid);
if (!data)
return;
diff --git a/builtin/receive-pack.c b/builtin/receive-pack.c
index d10aeb7..3802598 100644
--- a/builtin/receive-pack.c
+++ b/builtin/receive-pack.c
@@ -749,7 +749,7 @@ static void prepare_push_cert_sha1(struct child_process *proc)
int bogs /* beginning_of_gpg_sig */;
already_done = 1;
- if (write_object_file(push_cert.buf, push_cert.len, "blob",
+ if (write_object_file(push_cert.buf, push_cert.len, OBJ_BLOB,
&push_cert_oid))
oidclr(&push_cert_oid);
diff --git a/builtin/replace.c b/builtin/replace.c
index ac92337..5068f4f 100644
--- a/builtin/replace.c
+++ b/builtin/replace.c
@@ -409,7 +409,7 @@ static int check_one_mergetag(struct commit *commit,
int i;
hash_object_file(the_hash_algo, extra->value, extra->len,
- type_name(OBJ_TAG), &tag_oid);
+ OBJ_TAG, &tag_oid);
tag = lookup_tag(the_repository, &tag_oid);
if (!tag)
return error(_("bad mergetag in commit '%s'"), ref);
@@ -474,7 +474,7 @@ static int create_graft(int argc, const char **argv, int force, int gentle)
return -1;
}
- if (write_object_file(buf.buf, buf.len, commit_type, &new_oid)) {
+ if (write_object_file(buf.buf, buf.len, OBJ_COMMIT, &new_oid)) {
strbuf_release(&buf);
return error(_("could not write replacement commit for: '%s'"),
old_ref);
diff --git a/builtin/tag.c b/builtin/tag.c
index 2479da0..e5a8f85 100644
--- a/builtin/tag.c
+++ b/builtin/tag.c
@@ -239,7 +239,7 @@ static int build_tag_object(struct strbuf *buf, int sign, struct object_id *resu
{
if (sign && do_sign(buf) < 0)
return error(_("unable to sign the tag"));
- if (write_object_file(buf->buf, buf->len, tag_type, result) < 0)
+ if (write_object_file(buf->buf, buf->len, OBJ_TAG, result) < 0)
return error(_("unable to write tag file"));
return 0;
}
diff --git a/builtin/unpack-objects.c b/builtin/unpack-objects.c
index 4a94662..dbeb068 100644
--- a/builtin/unpack-objects.c
+++ b/builtin/unpack-objects.c
@@ -177,7 +177,7 @@ static void write_cached_object(struct object *obj, struct obj_buffer *obj_buf)
struct object_id oid;
if (write_object_file(obj_buf->buffer, obj_buf->size,
- type_name(obj->type), &oid) < 0)
+ obj->type, &oid) < 0)
die("failed to write object %s", oid_to_hex(&obj->oid));
obj->flags |= FLAG_WRITTEN;
}
@@ -243,7 +243,7 @@ static void write_object(unsigned nr, enum object_type type,
void *buf, unsigned long size)
{
if (!strict) {
- if (write_object_file(buf, size, type_name(type),
+ if (write_object_file(buf, size, type,
&obj_list[nr].oid) < 0)
die("failed to write object");
added_object(nr, type, buf, size);
@@ -251,7 +251,7 @@ static void write_object(unsigned nr, enum object_type type,
obj_list[nr].obj = NULL;
} else if (type == OBJ_BLOB) {
struct blob *blob;
- if (write_object_file(buf, size, type_name(type),
+ if (write_object_file(buf, size, type,
&obj_list[nr].oid) < 0)
die("failed to write object");
added_object(nr, type, buf, size);
@@ -266,7 +266,7 @@ static void write_object(unsigned nr, enum object_type type,
} else {
struct object *obj;
int eaten;
- hash_object_file(the_hash_algo, buf, size, type_name(type),
+ hash_object_file(the_hash_algo, buf, size, type,
&obj_list[nr].oid);
added_object(nr, type, buf, size);
obj = parse_object_buffer(the_repository, &obj_list[nr].oid,
diff --git a/bulk-checkin.c b/bulk-checkin.c
index 8785b2a..85b3eba 100644
--- a/bulk-checkin.c
+++ b/bulk-checkin.c
@@ -220,8 +220,8 @@ static int deflate_to_pack(struct bulk_checkin_state *state,
if (seekback == (off_t) -1)
return error("cannot find the current offset");
- header_len = xsnprintf((char *)obuf, sizeof(obuf), "%s %" PRIuMAX,
- type_name(type), (uintmax_t)size) + 1;
+ header_len = format_object_header((char *)obuf, sizeof(obuf),
+ type, size);
the_hash_algo->init_fn(&ctx);
the_hash_algo->update_fn(&ctx, obuf, header_len);
diff --git a/cache-tree.c b/cache-tree.c
index 65ca993..6752f69 100644
--- a/cache-tree.c
+++ b/cache-tree.c
@@ -432,15 +432,15 @@ static int update_one(struct cache_tree *it,
if (repair) {
struct object_id oid;
hash_object_file(the_hash_algo, buffer.buf, buffer.len,
- tree_type, &oid);
+ OBJ_TREE, &oid);
if (has_object_file_with_flags(&oid, OBJECT_INFO_SKIP_FETCH_OBJECT))
oidcpy(&it->oid, &oid);
else
to_invalidate = 1;
} else if (dryrun) {
hash_object_file(the_hash_algo, buffer.buf, buffer.len,
- tree_type, &it->oid);
- } else if (write_object_file_flags(buffer.buf, buffer.len, tree_type,
+ OBJ_TREE, &it->oid);
+ } else if (write_object_file_flags(buffer.buf, buffer.len, OBJ_TREE,
&it->oid, flags & WRITE_TREE_SILENT
? HASH_SILENT : 0)) {
strbuf_release(&buffer);
@@ -948,7 +948,7 @@ static int verify_one(struct repository *r,
strbuf_addf(&tree_buf, "%o %.*s%c", mode, entlen, name, '\0');
strbuf_add(&tree_buf, oid->hash, r->hash_algo->rawsz);
}
- hash_object_file(r->hash_algo, tree_buf.buf, tree_buf.len, tree_type,
+ hash_object_file(r->hash_algo, tree_buf.buf, tree_buf.len, OBJ_TREE,
&new_oid);
if (!oideq(&new_oid, &it->oid))
BUG("cache-tree for path %.*s does not match. "
diff --git a/cache.h b/cache.h
index 9e3d423..0bc0a37 100644
--- a/cache.h
+++ b/cache.h
@@ -1320,9 +1320,23 @@ enum unpack_loose_header_result unpack_loose_header(git_zstream *stream,
struct object_info;
int parse_loose_header(const char *hdr, struct object_info *oi);
+/**
+ * With in-core object data in "buf", rehash it to make sure the
+ * object name actually matches "oid" to detect object corruption.
+ *
+ * A negative value indicates an error, usually that the OID is not
+ * what we expected, but it might also indicate another error.
+ */
int check_object_signature(struct repository *r, const struct object_id *oid,
- void *buf, unsigned long size, const char *type,
- struct object_id *real_oidp);
+ void *map, unsigned long size,
+ enum object_type type);
+
+/**
+ * A streaming version of check_object_signature().
+ * Try reading the object named with "oid" using
+ * the streaming interface and rehash it to do the same.
+ */
+int stream_object_signature(struct repository *r, const struct object_id *oid);
int finalize_object_file(const char *tmpfile, const char *filename);
@@ -1549,7 +1563,7 @@ int cache_name_stage_compare(const char *name1, int len1, int stage1, const char
void *read_object_with_reference(struct repository *r,
const struct object_id *oid,
- const char *required_type,
+ enum object_type required_type,
unsigned long *size,
struct object_id *oid_ret);
diff --git a/commit.c b/commit.c
index d400f5d..3da69ba 100644
--- a/commit.c
+++ b/commit.c
@@ -1568,7 +1568,7 @@ int commit_tree_extended(const char *msg, size_t msg_len,
goto out;
}
- result = write_object_file(buffer.buf, buffer.len, commit_type, ret);
+ result = write_object_file(buffer.buf, buffer.len, OBJ_COMMIT, ret);
out:
strbuf_release(&buffer);
return result;
diff --git a/convert.c b/convert.c
index 3d53a75..8e39731 100644
--- a/convert.c
+++ b/convert.c
@@ -1159,7 +1159,7 @@ static int ident_to_worktree(const char *src, size_t len,
/* are we "faking" in place editing ? */
if (src == buf->buf)
to_free = strbuf_detach(buf, NULL);
- hash_object_file(the_hash_algo, src, len, "blob", &oid);
+ hash_object_file(the_hash_algo, src, len, OBJ_BLOB, &oid);
strbuf_grow(buf, len + cnt * (the_hash_algo->hexsz + 3));
for (;;) {
diff --git a/diffcore-rename.c b/diffcore-rename.c
index bebd4ed..c0422d9 100644
--- a/diffcore-rename.c
+++ b/diffcore-rename.c
@@ -261,7 +261,7 @@ static unsigned int hash_filespec(struct repository *r,
if (diff_populate_filespec(r, filespec, NULL))
return 0;
hash_object_file(r->hash_algo, filespec->data, filespec->size,
- "blob", &filespec->oid);
+ OBJ_BLOB, &filespec->oid);
}
return oidhash(&filespec->oid);
}
diff --git a/dir.c b/dir.c
index eb3f24b..3b37022 100644
--- a/dir.c
+++ b/dir.c
@@ -1113,7 +1113,7 @@ static int add_patterns(const char *fname, const char *base, int baselen,
&istate->cache[pos]->oid);
else
hash_object_file(the_hash_algo, buf, size,
- "blob", &oid_stat->oid);
+ OBJ_BLOB, &oid_stat->oid);
fill_stat_data(&oid_stat->stat, &st);
oid_stat->valid = 1;
}
diff --git a/http-push.c b/http-push.c
index 3309aaf..f0c044d 100644
--- a/http-push.c
+++ b/http-push.c
@@ -363,7 +363,7 @@ static void start_put(struct transfer_request *request)
git_zstream stream;
unpacked = read_object_file(&request->obj->oid, &type, &len);
- hdrlen = xsnprintf(hdr, sizeof(hdr), "%s %"PRIuMAX , type_name(type), (uintmax_t)len) + 1;
+ hdrlen = format_object_header(hdr, sizeof(hdr), type, len);
/* Set it up */
git_deflate_init(&stream, zlib_compression_level);
diff --git a/log-tree.c b/log-tree.c
index 25165e2..38e5ccc 100644
--- a/log-tree.c
+++ b/log-tree.c
@@ -565,7 +565,7 @@ static int show_one_mergetag(struct commit *commit,
struct strbuf signature = STRBUF_INIT;
hash_object_file(the_hash_algo, extra->value, extra->len,
- type_name(OBJ_TAG), &oid);
+ OBJ_TAG, &oid);
tag = lookup_tag(the_repository, &oid);
if (!tag)
return -1; /* error message already given */
diff --git a/match-trees.c b/match-trees.c
index df41398..49398e5 100644
--- a/match-trees.c
+++ b/match-trees.c
@@ -235,7 +235,7 @@ static int splice_tree(const struct object_id *oid1, const char *prefix,
rewrite_with = oid2;
}
hashcpy(rewrite_here, rewrite_with->hash);
- status = write_object_file(buf, sz, tree_type, result);
+ status = write_object_file(buf, sz, OBJ_TREE, result);
free(buf);
return status;
}
diff --git a/merge-ort.c b/merge-ort.c
index 97da477..dc3fc0e 100644
--- a/merge-ort.c
+++ b/merge-ort.c
@@ -1938,7 +1938,7 @@ static int handle_content_merge(struct merge_options *opt,
if (!ret &&
write_object_file(result_buf.ptr, result_buf.size,
- blob_type, &result->oid))
+ OBJ_BLOB, &result->oid))
ret = err(opt, _("Unable to add %s to database"),
path);
@@ -3392,7 +3392,7 @@ static void write_tree(struct object_id *result_oid,
}
/* Write this object file out, and record in result_oid */
- write_object_file(buf.buf, buf.len, tree_type, result_oid);
+ write_object_file(buf.buf, buf.len, OBJ_TREE, result_oid);
strbuf_release(&buf);
}
diff --git a/merge-recursive.c b/merge-recursive.c
index 9ec1e6d..1ee6364 100644
--- a/merge-recursive.c
+++ b/merge-recursive.c
@@ -1376,7 +1376,7 @@ static int merge_mode_and_contents(struct merge_options *opt,
if (!ret &&
write_object_file(result_buf.ptr, result_buf.size,
- blob_type, &result->blob.oid))
+ OBJ_BLOB, &result->blob.oid))
ret = err(opt, _("Unable to add %s to database"),
a->path);
diff --git a/notes-cache.c b/notes-cache.c
index 2473314..9dfd251 100644
--- a/notes-cache.c
+++ b/notes-cache.c
@@ -92,7 +92,7 @@ int notes_cache_put(struct notes_cache *c, struct object_id *key_oid,
{
struct object_id value_oid;
- if (write_object_file(data, size, "blob", &value_oid) < 0)
+ if (write_object_file(data, size, OBJ_BLOB, &value_oid) < 0)
return -1;
return add_note(&c->tree, key_oid, &value_oid, NULL);
}
diff --git a/notes.c b/notes.c
index f87dac4..7452e71 100644
--- a/notes.c
+++ b/notes.c
@@ -675,7 +675,7 @@ static int tree_write_stack_finish_subtree(struct tree_write_stack *tws)
ret = tree_write_stack_finish_subtree(n);
if (ret)
return ret;
- ret = write_object_file(n->buf.buf, n->buf.len, tree_type, &s);
+ ret = write_object_file(n->buf.buf, n->buf.len, OBJ_TREE, &s);
if (ret)
return ret;
strbuf_release(&n->buf);
@@ -836,7 +836,7 @@ int combine_notes_concatenate(struct object_id *cur_oid,
free(new_msg);
/* create a new blob object from buf */
- ret = write_object_file(buf, buf_len, blob_type, cur_oid);
+ ret = write_object_file(buf, buf_len, OBJ_BLOB, cur_oid);
free(buf);
return ret;
}
@@ -916,7 +916,7 @@ int combine_notes_cat_sort_uniq(struct object_id *cur_oid,
string_list_join_lines_helper, &buf))
goto out;
- ret = write_object_file(buf.buf, buf.len, blob_type, cur_oid);
+ ret = write_object_file(buf.buf, buf.len, OBJ_BLOB, cur_oid);
out:
strbuf_release(&buf);
@@ -1192,7 +1192,7 @@ int write_notes_tree(struct notes_tree *t, struct object_id *result)
ret = for_each_note(t, flags, write_each_note, &cb_data) ||
write_each_non_note_until(NULL, &cb_data) ||
tree_write_stack_finish_subtree(&root) ||
- write_object_file(root.buf.buf, root.buf.len, tree_type, result);
+ write_object_file(root.buf.buf, root.buf.len, OBJ_TREE, result);
strbuf_release(&root.buf);
return ret;
}
diff --git a/object-file.c b/object-file.c
index 03bd6a3..bdc5cbd 100644
--- a/object-file.c
+++ b/object-file.c
@@ -1049,35 +1049,50 @@ void *xmmap(void *start, size_t length,
return ret;
}
-/*
- * With an in-core object data in "map", rehash it to make sure the
- * object name actually matches "oid" to detect object corruption.
- * With "map" == NULL, try reading the object named with "oid" using
- * the streaming interface and rehash it to do the same.
- */
+static int format_object_header_literally(char *str, size_t size,
+ const char *type, size_t objsize)
+{
+ return xsnprintf(str, size, "%s %"PRIuMAX, type, (uintmax_t)objsize) + 1;
+}
+
+int format_object_header(char *str, size_t size, enum object_type type,
+ size_t objsize)
+{
+ const char *name = type_name(type);
+
+ if (!name)
+ BUG("could not get a type name for 'enum object_type' value %d", type);
+
+ return format_object_header_literally(str, size, name, objsize);
+}
+
int check_object_signature(struct repository *r, const struct object_id *oid,
- void *map, unsigned long size, const char *type,
- struct object_id *real_oidp)
+ void *buf, unsigned long size,
+ enum object_type type)
{
- struct object_id tmp;
- struct object_id *real_oid = real_oidp ? real_oidp : &tmp;
+ struct object_id real_oid;
+
+ hash_object_file(r->hash_algo, buf, size, type, &real_oid);
+
+ return !oideq(oid, &real_oid) ? -1 : 0;
+}
+
+int stream_object_signature(struct repository *r, const struct object_id *oid)
+{
+ struct object_id real_oid;
+ unsigned long size;
enum object_type obj_type;
struct git_istream *st;
git_hash_ctx c;
char hdr[MAX_HEADER_LEN];
int hdrlen;
- if (map) {
- hash_object_file(r->hash_algo, map, size, type, real_oid);
- return !oideq(oid, real_oid) ? -1 : 0;
- }
-
st = open_istream(r, oid, &obj_type, &size, NULL);
if (!st)
return -1;
/* Generate the header */
- hdrlen = xsnprintf(hdr, sizeof(hdr), "%s %"PRIuMAX , type_name(obj_type), (uintmax_t)size) + 1;
+ hdrlen = format_object_header(hdr, sizeof(hdr), obj_type, size);
/* Sha1.. */
r->hash_algo->init_fn(&c);
@@ -1094,9 +1109,9 @@ int check_object_signature(struct repository *r, const struct object_id *oid,
break;
r->hash_algo->update_fn(&c, buf, readlen);
}
- r->hash_algo->final_oid_fn(real_oid, &c);
+ r->hash_algo->final_oid_fn(&real_oid, &c);
close_istream(st);
- return !oideq(oid, real_oid) ? -1 : 0;
+ return !oideq(oid, &real_oid) ? -1 : 0;
}
int git_open_cloexec(const char *name, int flags)
@@ -1662,7 +1677,7 @@ int pretend_object_file(void *buf, unsigned long len, enum object_type type,
{
struct cached_object *co;
- hash_object_file(the_hash_algo, buf, len, type_name(type), oid);
+ hash_object_file(the_hash_algo, buf, len, type, oid);
if (has_object_file_with_flags(oid, OBJECT_INFO_QUICK | OBJECT_INFO_SKIP_FETCH_OBJECT) ||
find_cached_object(oid))
return 0;
@@ -1722,16 +1737,15 @@ void *read_object_file_extended(struct repository *r,
void *read_object_with_reference(struct repository *r,
const struct object_id *oid,
- const char *required_type_name,
+ enum object_type required_type,
unsigned long *size,
struct object_id *actual_oid_return)
{
- enum object_type type, required_type;
+ enum object_type type;
void *buffer;
unsigned long isize;
struct object_id actual_oid;
- required_type = type_from_string(required_type_name);
oidcpy(&actual_oid, oid);
while (1) {
int ref_length = -1;
@@ -1769,21 +1783,40 @@ void *read_object_with_reference(struct repository *r,
}
}
+static void hash_object_body(const struct git_hash_algo *algo, git_hash_ctx *c,
+ const void *buf, unsigned long len,
+ struct object_id *oid,
+ char *hdr, int *hdrlen)
+{
+ algo->init_fn(c);
+ algo->update_fn(c, hdr, *hdrlen);
+ algo->update_fn(c, buf, len);
+ algo->final_oid_fn(oid, c);
+}
+
static void write_object_file_prepare(const struct git_hash_algo *algo,
const void *buf, unsigned long len,
- const char *type, struct object_id *oid,
+ enum object_type type, struct object_id *oid,
char *hdr, int *hdrlen)
{
git_hash_ctx c;
/* Generate the header */
- *hdrlen = xsnprintf(hdr, *hdrlen, "%s %"PRIuMAX , type, (uintmax_t)len)+1;
+ *hdrlen = format_object_header(hdr, *hdrlen, type, len);
/* Sha1.. */
- algo->init_fn(&c);
- algo->update_fn(&c, hdr, *hdrlen);
- algo->update_fn(&c, buf, len);
- algo->final_oid_fn(oid, &c);
+ hash_object_body(algo, &c, buf, len, oid, hdr, hdrlen);
+}
+
+static void write_object_file_prepare_literally(const struct git_hash_algo *algo,
+ const void *buf, unsigned long len,
+ const char *type, struct object_id *oid,
+ char *hdr, int *hdrlen)
+{
+ git_hash_ctx c;
+
+ *hdrlen = format_object_header_literally(hdr, *hdrlen, type, len);
+ hash_object_body(algo, &c, buf, len, oid, hdr, hdrlen);
}
/*
@@ -1836,14 +1869,21 @@ static int write_buffer(int fd, const void *buf, size_t len)
return 0;
}
-int hash_object_file(const struct git_hash_algo *algo, const void *buf,
- unsigned long len, const char *type,
- struct object_id *oid)
+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)
{
char hdr[MAX_HEADER_LEN];
int hdrlen = sizeof(hdr);
- write_object_file_prepare(algo, buf, len, type, oid, hdr, &hdrlen);
- return 0;
+
+ write_object_file_prepare_literally(algo, buf, len, type, oid, hdr, &hdrlen);
+}
+
+void hash_object_file(const struct git_hash_algo *algo, const void *buf,
+ unsigned long len, enum object_type type,
+ struct object_id *oid)
+{
+ hash_object_file_literally(algo, buf, len, type_name(type), oid);
}
/* Finalize a file on disk, and close it. */
@@ -1998,7 +2038,7 @@ static int freshen_packed_object(const struct object_id *oid)
}
int write_object_file_flags(const void *buf, unsigned long len,
- const char *type, struct object_id *oid,
+ enum object_type type, struct object_id *oid,
unsigned flags)
{
char hdr[MAX_HEADER_LEN];
@@ -2014,9 +2054,9 @@ 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 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;
@@ -2024,8 +2064,8 @@ int hash_object_file_literally(const void *buf, unsigned long len,
/* type string, SP, %lu of the length plus NUL must fit this */
hdrlen = strlen(type) + MAX_HEADER_LEN;
header = xmalloc(hdrlen);
- write_object_file_prepare(the_hash_algo, buf, len, type, oid, header,
- &hdrlen);
+ write_object_file_prepare_literally(the_hash_algo, buf, len, type,
+ oid, header, &hdrlen);
if (!(flags & HASH_WRITE_OBJECT))
goto cleanup;
@@ -2052,7 +2092,7 @@ int force_object_loose(const struct object_id *oid, time_t mtime)
buf = read_object(the_repository, oid, &type, &len);
if (!buf)
return error(_("cannot read object for %s"), oid_to_hex(oid));
- hdrlen = xsnprintf(hdr, sizeof(hdr), "%s %"PRIuMAX , type_name(type), (uintmax_t)len) + 1;
+ hdrlen = format_object_header(hdr, sizeof(hdr), type, len);
ret = write_loose_object(oid, hdr, hdrlen, buf, len, mtime, 0);
free(buf);
@@ -2118,7 +2158,8 @@ static int index_mem(struct index_state *istate,
enum object_type type,
const char *path, unsigned flags)
{
- int ret, re_allocated = 0;
+ int ret = 0;
+ int re_allocated = 0;
int write_object = flags & HASH_WRITE_OBJECT;
if (!type)
@@ -2145,10 +2186,9 @@ static int index_mem(struct index_state *istate,
}
if (write_object)
- ret = write_object_file(buf, size, type_name(type), oid);
+ ret = write_object_file(buf, size, type, oid);
else
- ret = hash_object_file(the_hash_algo, buf, size,
- type_name(type), oid);
+ hash_object_file(the_hash_algo, buf, size, type, oid);
if (re_allocated)
free(buf);
return ret;
@@ -2160,7 +2200,7 @@ static int index_stream_convert_blob(struct index_state *istate,
const char *path,
unsigned flags)
{
- int ret;
+ int ret = 0;
const int write_object = flags & HASH_WRITE_OBJECT;
struct strbuf sbuf = STRBUF_INIT;
@@ -2171,11 +2211,11 @@ static int index_stream_convert_blob(struct index_state *istate,
get_conv_flags(flags));
if (write_object)
- ret = write_object_file(sbuf.buf, sbuf.len, type_name(OBJ_BLOB),
+ ret = write_object_file(sbuf.buf, sbuf.len, OBJ_BLOB,
oid);
else
- ret = hash_object_file(the_hash_algo, sbuf.buf, sbuf.len,
- type_name(OBJ_BLOB), oid);
+ hash_object_file(the_hash_algo, sbuf.buf, sbuf.len, OBJ_BLOB,
+ oid);
strbuf_release(&sbuf);
return ret;
}
@@ -2294,8 +2334,8 @@ int index_path(struct index_state *istate, struct object_id *oid,
return error_errno("readlink(\"%s\")", path);
if (!(flags & HASH_WRITE_OBJECT))
hash_object_file(the_hash_algo, sb.buf, sb.len,
- blob_type, oid);
- else if (write_object_file(sb.buf, sb.len, blob_type, oid))
+ OBJ_BLOB, oid);
+ else if (write_object_file(sb.buf, sb.len, OBJ_BLOB, oid))
rc = error(_("%s: failed to insert into database"), path);
strbuf_release(&sb);
break;
@@ -2599,9 +2639,10 @@ 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 6f89482..bd2322e 100644
--- a/object-store.h
+++ b/object-store.h
@@ -245,22 +245,22 @@ static inline void *repo_read_object_file(struct repository *r,
/* Read and unpack an object file into memory, write memory to an object file */
int oid_object_info(struct repository *r, const struct object_id *, unsigned long *);
-int hash_object_file(const struct git_hash_algo *algo, const void *buf,
- unsigned long len, const char *type,
- struct object_id *oid);
+void hash_object_file(const struct git_hash_algo *algo, const void *buf,
+ unsigned long len, enum object_type type,
+ struct object_id *oid);
int write_object_file_flags(const void *buf, unsigned long len,
- const char *type, struct object_id *oid,
+ enum object_type type, struct object_id *oid,
unsigned flags);
static inline int write_object_file(const void *buf, unsigned long len,
- const char *type, struct object_id *oid)
+ enum object_type type, struct object_id *oid)
{
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 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
@@ -331,6 +331,14 @@ int repo_has_object_file_with_flags(struct repository *r,
*/
int has_loose_object_nonlocal(const struct object_id *);
+/**
+ * format_object_header() is a thin wrapper around s xsnprintf() that
+ * writes the initial "<type> <obj-len>" part of the loose object
+ * header. It returns the size that snprintf() returns + 1.
+ */
+int format_object_header(char *str, size_t size, enum object_type type,
+ size_t objsize);
+
void assert_oid_type(const struct object_id *oid, enum object_type expect);
/*
diff --git a/object.c b/object.c
index c37501f..588b815 100644
--- a/object.c
+++ b/object.c
@@ -279,7 +279,7 @@ struct object *parse_object(struct repository *r, const struct object_id *oid)
if ((obj && obj->type == OBJ_BLOB && repo_has_object_file(r, oid)) ||
(!obj && repo_has_object_file(r, oid) &&
oid_object_info(r, oid, NULL) == OBJ_BLOB)) {
- if (check_object_signature(r, repl, NULL, 0, NULL, NULL) < 0) {
+ if (stream_object_signature(r, repl) < 0) {
error(_("hash mismatch %s"), oid_to_hex(oid));
return NULL;
}
@@ -289,8 +289,7 @@ struct object *parse_object(struct repository *r, const struct object_id *oid)
buffer = repo_read_object_file(r, oid, &type, &size);
if (buffer) {
- if (check_object_signature(r, repl, buffer, size,
- type_name(type), NULL) < 0) {
+ if (check_object_signature(r, repl, buffer, size, type) < 0) {
free(buffer);
error(_("hash mismatch %s"), oid_to_hex(repl));
return NULL;
diff --git a/pack-check.c b/pack-check.c
index 3f418e3..bfb593b 100644
--- a/pack-check.c
+++ b/pack-check.c
@@ -127,7 +127,7 @@ static int verify_packfile(struct repository *r,
if (type == OBJ_BLOB && big_file_threshold <= size) {
/*
- * Let check_object_signature() check it with
+ * Let stream_object_signature() check it with
* the streaming interface; no point slurping
* the data in-core only to discard.
*/
@@ -142,8 +142,11 @@ static int verify_packfile(struct repository *r,
err = error("cannot unpack %s from %s at offset %"PRIuMAX"",
oid_to_hex(&oid), p->pack_name,
(uintmax_t)entries[i].offset);
- else if (check_object_signature(r, &oid, data, size,
- type_name(type), NULL))
+ else if (data && check_object_signature(r, &oid, data, size,
+ type) < 0)
+ err = error("packed %s from %s is corrupt",
+ oid_to_hex(&oid), p->pack_name);
+ else if (!data && stream_object_signature(r, &oid) < 0)
err = error("packed %s from %s is corrupt",
oid_to_hex(&oid), p->pack_name);
else if (fn) {
diff --git a/read-cache.c b/read-cache.c
index 79b9b99..1ad56d0 100644
--- a/read-cache.c
+++ b/read-cache.c
@@ -736,7 +736,7 @@ static struct cache_entry *create_alias_ce(struct index_state *istate,
void set_object_name_for_intent_to_add_entry(struct cache_entry *ce)
{
struct object_id oid;
- if (write_object_file("", 0, blob_type, &oid))
+ if (write_object_file("", 0, OBJ_BLOB, &oid))
die(_("cannot create an empty blob in the object database"));
oidcpy(&ce->oid, &oid);
}
diff --git a/tree-walk.c b/tree-walk.c
index 3a94959..506234b 100644
--- a/tree-walk.c
+++ b/tree-walk.c
@@ -89,7 +89,7 @@ void *fill_tree_descriptor(struct repository *r,
void *buf = NULL;
if (oid) {
- buf = read_object_with_reference(r, oid, tree_type, &size, NULL);
+ buf = read_object_with_reference(r, oid, OBJ_TREE, &size, NULL);
if (!buf)
die("unable to read tree %s", oid_to_hex(oid));
}
@@ -605,7 +605,7 @@ int get_tree_entry(struct repository *r,
unsigned long size;
struct object_id root;
- tree = read_object_with_reference(r, tree_oid, tree_type, &size, &root);
+ tree = read_object_with_reference(r, tree_oid, OBJ_TREE, &size, &root);
if (!tree)
return -1;
@@ -677,7 +677,7 @@ enum get_oid_result get_tree_entry_follow_symlinks(struct repository *r,
unsigned long size;
tree = read_object_with_reference(r,
&current_tree_oid,
- tree_type, &size,
+ OBJ_TREE, &size,
&root);
if (!tree)
goto done;