Revert "unpack-objects: prevent writing of inconsistent objects"

This reverts commit d5ef408b9a.

Documentation/git-unpack-objects.txt

@@ -40,9 +40,6 @@ OPTIONS
 	and make the best effort to recover as many objects as
 	possible.
 
---strict::
-	Don't write objects with broken content or links.
-
 
 Author
 ------

builtin-unpack-objects.c

@@ -7,13 +7,11 @@
 #include "commit.h"
 #include "tag.h"
 #include "tree.h"
-#include "tree-walk.h"
 #include "progress.h"
 #include "decorate.h"
-#include "fsck.h"
 
-static int dry_run, quiet, recover, has_errors, strict;
-static const char unpack_usage[] = "git-unpack-objects [-n] [-q] [-r] [--strict] < pack-file";
+static int dry_run, quiet, recover, has_errors;
+static const char unpack_usage[] = "git-unpack-objects [-n] [-q] [-r] < pack-file";
 
 /* We always read in 4kB chunks. */
 static unsigned char buffer[4096];
@@ -33,16 +31,6 @@ static struct obj_buffer *lookup_object_buffer(struct object *base)
 	return lookup_decoration(&obj_decorate, base);
 }
 
-static void add_object_buffer(struct object *object, char *buffer, unsigned long size)
-{
-	struct obj_buffer *obj;
-	obj = xcalloc(1, sizeof(struct obj_buffer));
-	obj->buffer = buffer;
-	obj->size = size;
-	if (add_decoration(&obj_decorate, object, obj))
-		die("object %s tried to add buffer twice!", sha1_to_hex(object->sha1));
-}
-
 /*
  * Make sure at least "min" bytes are available in the buffer, and
  * return the pointer to the buffer.
@@ -146,58 +134,9 @@ static void add_delta_to_list(unsigned nr, unsigned const char *base_sha1,
 struct obj_info {
 	off_t offset;
 	unsigned char sha1[20];
-	struct object *obj;
 };
 
-#define FLAG_OPEN (1u<<20)
-#define FLAG_WRITTEN (1u<<21)
-
 static struct obj_info *obj_list;
-unsigned nr_objects;
-
-static void write_cached_object(struct object *obj)
-{
-	unsigned char sha1[20];
-	struct obj_buffer *obj_buf = lookup_object_buffer(obj);
-	if (write_sha1_file(obj_buf->buffer, obj_buf->size, typename(obj->type), sha1) < 0)
-		die("failed to write object %s", sha1_to_hex(obj->sha1));
-	obj->flags |= FLAG_WRITTEN;
-}
-
-static int check_object(struct object *obj, int type, void *data)
-{
-	if (!obj)
-		return 0;
-
-	if (obj->flags & FLAG_WRITTEN)
-		return 1;
-
-	if (type != OBJ_ANY && obj->type != type)
-		die("object type mismatch");
-
-	if (!(obj->flags & FLAG_OPEN)) {
-		unsigned long size;
-		int type = sha1_object_info(obj->sha1, &size);
-		if (type != obj->type || type <= 0)
-			die("object of unexpected type");
-		obj->flags |= FLAG_WRITTEN;
-		return 1;
-	}
-
-	if (fsck_object(obj, 1, fsck_error_function))
-		die("Error in object");
-	if (!fsck_walk(obj, check_object, 0))
-		die("Error on reachable objects of %s", sha1_to_hex(obj->sha1));
-	write_cached_object(obj);
-	return 1;
-}
-
-static void write_rest(void)
-{
-	unsigned i;
-	for (i = 0; i < nr_objects; i++)
-		check_object(obj_list[i].obj, OBJ_ANY, 0);
-}
 
 static void added_object(unsigned nr, enum object_type type,
 			 void *data, unsigned long size);
@@ -205,36 +144,9 @@ static void added_object(unsigned nr, enum object_type type,
 static void write_object(unsigned nr, enum object_type type,
 			 void *buf, unsigned long size)
 {
+	if (write_sha1_file(buf, size, typename(type), obj_list[nr].sha1) < 0)
+		die("failed to write object");
 	added_object(nr, type, buf, size);
-	if (!strict) {
-		if (write_sha1_file(buf, size, typename(type), obj_list[nr].sha1) < 0)
-			die("failed to write object");
-		free(buf);
-		obj_list[nr].obj = 0;
-	} else if (type == OBJ_BLOB) {
-		struct blob *blob;
-		if (write_sha1_file(buf, size, typename(type), obj_list[nr].sha1) < 0)
-			die("failed to write object");
-		free(buf);
-
-		blob = lookup_blob(obj_list[nr].sha1);
-		if (blob)
-			blob->object.flags |= FLAG_WRITTEN;
-		else
-			die("invalid blob object");
-		obj_list[nr].obj = 0;
-	} else {
-		struct object *obj;
-		int eaten;
-		hash_sha1_file(buf, size, typename(type), obj_list[nr].sha1);
-		obj = parse_object_buffer(obj_list[nr].sha1, type, size, buf, &eaten);
-		if (!obj)
-			die("invalid %s", typename(type));
-		/* buf is stored via add_object_buffer and in obj, if its a tree or commit */
-		add_object_buffer(obj, buf, size);
-		obj->flags |= FLAG_OPEN;
-		obj_list[nr].obj = obj;
-	}
 }
 
 static void resolve_delta(unsigned nr, enum object_type type,
@@ -251,6 +163,7 @@ static void resolve_delta(unsigned nr, enum object_type type,
 		die("failed to apply delta");
 	free(delta);
 	write_object(nr, type, result, result_size);
+	free(result);
 }
 
 static void added_object(unsigned nr, enum object_type type,
@@ -280,8 +193,7 @@ static void unpack_non_delta_entry(enum object_type type, unsigned long size,
 
 	if (!dry_run && buf)
 		write_object(nr, type, buf, size);
-	else
-		free(buf);
+	free(buf);
 }
 
 static void unpack_delta_entry(enum object_type type, unsigned long delta_size,
@@ -424,8 +336,7 @@ static void unpack_all(void)
 	int i;
 	struct progress *progress = NULL;
 	struct pack_header *hdr = fill(sizeof(struct pack_header));
-
-	nr_objects = ntohl(hdr->hdr_entries);
+	unsigned nr_objects = ntohl(hdr->hdr_entries);
 
 	if (ntohl(hdr->hdr_signature) != PACK_SIGNATURE)
 		die("bad pack file");
@@ -436,7 +347,6 @@ static void unpack_all(void)
 	if (!quiet)
 		progress = start_progress("Unpacking objects", nr_objects);
 	obj_list = xmalloc(nr_objects * sizeof(*obj_list));
-	memset(obj_list, 0, nr_objects * sizeof(*obj_list));
 	for (i = 0; i < nr_objects; i++) {
 		unpack_one(i);
 		display_progress(progress, i + 1);
@@ -472,10 +382,6 @@ int cmd_unpack_objects(int argc, const char **argv, const char *prefix)
 				recover = 1;
 				continue;
 			}
-			if (!strcmp(arg, "--strict")) {
-				strict = 1;
-				continue;
-			}
 			if (!prefixcmp(arg, "--pack_header=")) {
 				struct pack_header *hdr;
 				char *c;
@@ -501,8 +407,6 @@ int cmd_unpack_objects(int argc, const char **argv, const char *prefix)
 	unpack_all();
 	SHA1_Update(&ctx, buffer, offset);
 	SHA1_Final(sha1, &ctx);
-	if (strict)
-		write_rest();
 	if (hashcmp(fill(20), sha1))
 		die("final sha1 did not match");
 	use(20);