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355885d531
The requirements are: * it may not crash on NULL pointers * a callback function is needed, as index-pack/unpack-objects need to do different things * the type information is needed to check the expected <-> real type and print better error messages Signed-off-by: Martin Koegler <mkoegler@auto.tuwien.ac.at> Signed-off-by: Junio C Hamano <gitster@pobox.com>
91 lines
2 KiB
C
91 lines
2 KiB
C
#include "cache.h"
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#include "object.h"
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#include "blob.h"
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#include "tree.h"
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#include "tree-walk.h"
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#include "commit.h"
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#include "tag.h"
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#include "fsck.h"
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static int fsck_walk_tree(struct tree *tree, fsck_walk_func walk, void *data)
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{
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struct tree_desc desc;
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struct name_entry entry;
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int res = 0;
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if (parse_tree(tree))
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return -1;
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init_tree_desc(&desc, tree->buffer, tree->size);
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while (tree_entry(&desc, &entry)) {
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int result;
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if (S_ISGITLINK(entry.mode))
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continue;
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if (S_ISDIR(entry.mode))
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result = walk(&lookup_tree(entry.sha1)->object, OBJ_TREE, data);
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else if (S_ISREG(entry.mode) || S_ISLNK(entry.mode))
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result = walk(&lookup_blob(entry.sha1)->object, OBJ_BLOB, data);
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else {
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result = error("in tree %s: entry %s has bad mode %.6o\n",
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sha1_to_hex(tree->object.sha1), entry.path, entry.mode);
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}
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if (result < 0)
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return result;
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if (!res)
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res = result;
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}
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return res;
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}
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static int fsck_walk_commit(struct commit *commit, fsck_walk_func walk, void *data)
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{
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struct commit_list *parents;
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int res;
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int result;
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if (parse_commit(commit))
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return -1;
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result = walk((struct object *)commit->tree, OBJ_TREE, data);
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if (result < 0)
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return result;
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res = result;
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parents = commit->parents;
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while (parents) {
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result = walk((struct object *)parents->item, OBJ_COMMIT, data);
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if (result < 0)
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return result;
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if (!res)
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res = result;
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parents = parents->next;
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}
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return res;
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}
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static int fsck_walk_tag(struct tag *tag, fsck_walk_func walk, void *data)
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{
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if (parse_tag(tag))
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return -1;
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return walk(tag->tagged, OBJ_ANY, data);
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}
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int fsck_walk(struct object *obj, fsck_walk_func walk, void *data)
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{
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if (!obj)
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return -1;
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switch (obj->type) {
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case OBJ_BLOB:
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return 0;
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case OBJ_TREE:
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return fsck_walk_tree((struct tree *)obj, walk, data);
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case OBJ_COMMIT:
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return fsck_walk_commit((struct commit *)obj, walk, data);
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case OBJ_TAG:
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return fsck_walk_tag((struct tag *)obj, walk, data);
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default:
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error("Unknown object type for %s", sha1_to_hex(obj->sha1));
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return -1;
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}
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}
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