merge(third_party/git): Merge squashed git subtree at v2.23.0 r/373

Merge commit '1b593e1ea4d2af0f6444d9a7788d5d99abd6fde5' as 'third_party/git'

1 files changed, 66 insertions, 0 deletions

diff --git a/third_party/git/fsck.h b/third_party/git/fsck.h
new file mode 100644
index 000000000000..b95595ae5fee
--- /dev/null
+++ b/third_party/git/fsck.h
@@ -0,0 +1,66 @@
+#ifndef GIT_FSCK_H
+#define GIT_FSCK_H
+
+#include "oidset.h"
+
+#define FSCK_ERROR 1
+#define FSCK_WARN 2
+#define FSCK_IGNORE 3
+
+struct fsck_options;
+struct object;
+
+void fsck_set_msg_type(struct fsck_options *options,
+		const char *msg_id, const char *msg_type);
+void fsck_set_msg_types(struct fsck_options *options, const char *values);
+int is_valid_msg_type(const char *msg_id, const char *msg_type);
+
+/*
+ * callback function for fsck_walk
+ * type is the expected type of the object or OBJ_ANY
+ * the return value is:
+ *     0	everything OK
+ *     <0	error signaled and abort
+ *     >0	error signaled and do not abort
+ */
+typedef int (*fsck_walk_func)(struct object *obj, int type, void *data, struct fsck_options *options);
+
+/* callback for fsck_object, type is FSCK_ERROR or FSCK_WARN */
+typedef int (*fsck_error)(struct fsck_options *o,
+	struct object *obj, int type, const char *message);
+
+int fsck_error_function(struct fsck_options *o,
+	struct object *obj, int type, const char *message);
+
+struct fsck_options {
+	fsck_walk_func walk;
+	fsck_error error_func;
+	unsigned strict:1;
+	int *msg_type;
+	struct oidset skiplist;
+	struct decoration *object_names;
+};
+
+#define FSCK_OPTIONS_DEFAULT { NULL, fsck_error_function, 0, NULL, OIDSET_INIT }
+#define FSCK_OPTIONS_STRICT { NULL, fsck_error_function, 1, NULL, OIDSET_INIT }
+
+/* descend in all linked child objects
+ * the return value is:
+ *    -1	error in processing the object
+ *    <0	return value of the callback, which lead to an abort
+ *    >0	return value of the first signaled error >0 (in the case of no other errors)
+ *    0		everything OK
+ */
+int fsck_walk(struct object *obj, void *data, struct fsck_options *options);
+/* If NULL is passed for data, we assume the object is local and read it. */
+int fsck_object(struct object *obj, void *data, unsigned long size,
+	struct fsck_options *options);
+
+/*
+ * Some fsck checks are context-dependent, and may end up queued; run this
+ * after completing all fsck_object() calls in order to resolve any remaining
+ * checks.
+ */
+int fsck_finish(struct fsck_options *options);
+
+#endif