diff options
author | Jeff King <peff@peff.net> | 2018-05-02 22:44:51 +0300 |
---|---|---|
committer | Jeff King <peff@peff.net> | 2018-05-22 06:55:12 +0300 |
commit | 7ac4f3a007e2567f9d2492806186aa063f9a08d6 (patch) | |
tree | 940b2dfa953d71d3838b89cdae8f9ab193fea6ea /builtin | |
parent | ed9c3220621d634d543bc4dd998d12167dfc57d4 (diff) |
fsck: actually fsck blob data
Because fscking a blob has always been a noop, we didn't
bother passing around the blob data. In preparation for
content-level checks, let's fix up a few things:
1. The fsck_object() function just returns success for any
blob. Let's a noop fsck_blob(), which we can fill in
with actual logic later.
2. The fsck_loose() function in builtin/fsck.c
just threw away blob content after loading it. Let's
hold onto it until after we've called fsck_object().
The easiest way to do this is to just drop the
parse_loose_object() helper entirely. Incidentally,
this also fixes a memory leak: if we successfully
loaded the object data but did not parse it, we would
have left the function without freeing it.
3. When fsck_loose() loads the object data, it
does so with a custom read_loose_object() helper. This
function streams any blobs, regardless of size, under
the assumption that we're only checking the sha1.
Instead, let's actually load blobs smaller than
big_file_threshold, as the normal object-reading
code-paths would do. This lets us fsck small files, and
a NULL return is an indication that the blob was so big
that it needed to be streamed, and we can pass that
information along to fsck_blob().
Signed-off-by: Jeff King <peff@peff.net>
Diffstat (limited to 'builtin')
-rw-r--r-- | builtin/fsck.c | 42 |
1 files changed, 20 insertions, 22 deletions
diff --git a/builtin/fsck.c b/builtin/fsck.c index ef78c6c00c..f91d5f360d 100644 --- a/builtin/fsck.c +++ b/builtin/fsck.c @@ -337,7 +337,7 @@ static void check_connectivity(void) } } -static int fsck_obj(struct object *obj) +static int fsck_obj(struct object *obj, void *buffer, unsigned long size) { int err; @@ -351,7 +351,7 @@ static int fsck_obj(struct object *obj) if (fsck_walk(obj, NULL, &fsck_obj_options)) objerror(obj, "broken links"); - err = fsck_object(obj, NULL, 0, &fsck_obj_options); + err = fsck_object(obj, buffer, size, &fsck_obj_options); if (err) goto out; @@ -396,7 +396,7 @@ static int fsck_obj_buffer(const struct object_id *oid, enum object_type type, } obj->flags &= ~(REACHABLE | SEEN); obj->flags |= HAS_OBJ; - return fsck_obj(obj); + return fsck_obj(obj, buffer, size); } static int default_refs; @@ -504,44 +504,42 @@ static void get_default_heads(void) } } -static struct object *parse_loose_object(const struct object_id *oid, - const char *path) +static int fsck_loose(const struct object_id *oid, const char *path, void *data) { struct object *obj; - void *contents; enum object_type type; unsigned long size; + void *contents; int eaten; - if (read_loose_object(path, oid->hash, &type, &size, &contents) < 0) - return NULL; + if (read_loose_object(path, oid->hash, &type, &size, &contents) < 0) { + errors_found |= ERROR_OBJECT; + error("%s: object corrupt or missing: %s", + oid_to_hex(oid), path); + return 0; /* keep checking other objects */ + } if (!contents && type != OBJ_BLOB) - die("BUG: read_loose_object streamed a non-blob"); + BUG("read_loose_object streamed a non-blob"); obj = parse_object_buffer(oid, type, size, contents, &eaten); - - if (!eaten) - free(contents); - return obj; -} - -static int fsck_loose(const struct object_id *oid, const char *path, void *data) -{ - struct object *obj = parse_loose_object(oid, path); - if (!obj) { errors_found |= ERROR_OBJECT; - error("%s: object corrupt or missing: %s", + error("%s: object could not be parsed: %s", oid_to_hex(oid), path); + if (!eaten) + free(contents); return 0; /* keep checking other objects */ } obj->flags &= ~(REACHABLE | SEEN); obj->flags |= HAS_OBJ; - if (fsck_obj(obj)) + if (fsck_obj(obj, contents, size)) errors_found |= ERROR_OBJECT; - return 0; + + if (!eaten) + free(contents); + return 0; /* keep checking other objects, even if we saw an error */ } static int fsck_cruft(const char *basename, const char *path, void *data) |