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-rw-r--r--third_party/git/refs.c2349
1 files changed, 0 insertions, 2349 deletions
diff --git a/third_party/git/refs.c b/third_party/git/refs.c
deleted file mode 100644
index fa01153151a8..000000000000
--- a/third_party/git/refs.c
+++ /dev/null
@@ -1,2349 +0,0 @@
-/*
- * The backend-independent part of the reference module.
- */
-
-#include "cache.h"
-#include "config.h"
-#include "hashmap.h"
-#include "lockfile.h"
-#include "iterator.h"
-#include "refs.h"
-#include "refs/refs-internal.h"
-#include "run-command.h"
-#include "object-store.h"
-#include "object.h"
-#include "tag.h"
-#include "submodule.h"
-#include "worktree.h"
-#include "strvec.h"
-#include "repository.h"
-#include "sigchain.h"
-
-/*
- * List of all available backends
- */
-static struct ref_storage_be *refs_backends = &refs_be_files;
-
-static struct ref_storage_be *find_ref_storage_backend(const char *name)
-{
-	struct ref_storage_be *be;
-	for (be = refs_backends; be; be = be->next)
-		if (!strcmp(be->name, name))
-			return be;
-	return NULL;
-}
-
-int ref_storage_backend_exists(const char *name)
-{
-	return find_ref_storage_backend(name) != NULL;
-}
-
-/*
- * How to handle various characters in refnames:
- * 0: An acceptable character for refs
- * 1: End-of-component
- * 2: ., look for a preceding . to reject .. in refs
- * 3: {, look for a preceding @ to reject @{ in refs
- * 4: A bad character: ASCII control characters, and
- *    ":", "?", "[", "\", "^", "~", SP, or TAB
- * 5: *, reject unless REFNAME_REFSPEC_PATTERN is set
- */
-static unsigned char refname_disposition[256] = {
-	1, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
-	4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
-	4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5, 0, 0, 0, 2, 1,
-	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 4,
-	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 4, 0, 4, 0,
-	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 4, 4
-};
-
-/*
- * Try to read one refname component from the front of refname.
- * Return the length of the component found, or -1 if the component is
- * not legal.  It is legal if it is something reasonable to have under
- * ".git/refs/"; We do not like it if:
- *
- * - it begins with ".", or
- * - it has double dots "..", or
- * - it has ASCII control characters, or
- * - it has ":", "?", "[", "\", "^", "~", SP, or TAB anywhere, or
- * - it has "*" anywhere unless REFNAME_REFSPEC_PATTERN is set, or
- * - it ends with a "/", or
- * - it ends with ".lock", or
- * - it contains a "@{" portion
- *
- * When sanitized is not NULL, instead of rejecting the input refname
- * as an error, try to come up with a usable replacement for the input
- * refname in it.
- */
-static int check_refname_component(const char *refname, int *flags,
-				   struct strbuf *sanitized)
-{
-	const char *cp;
-	char last = '\0';
-	size_t component_start = 0; /* garbage - not a reasonable initial value */
-
-	if (sanitized)
-		component_start = sanitized->len;
-
-	for (cp = refname; ; cp++) {
-		int ch = *cp & 255;
-		unsigned char disp = refname_disposition[ch];
-
-		if (sanitized && disp != 1)
-			strbuf_addch(sanitized, ch);
-
-		switch (disp) {
-		case 1:
-			goto out;
-		case 2:
-			if (last == '.') { /* Refname contains "..". */
-				if (sanitized)
-					/* collapse ".." to single "." */
-					strbuf_setlen(sanitized, sanitized->len - 1);
-				else
-					return -1;
-			}
-			break;
-		case 3:
-			if (last == '@') { /* Refname contains "@{". */
-				if (sanitized)
-					sanitized->buf[sanitized->len-1] = '-';
-				else
-					return -1;
-			}
-			break;
-		case 4:
-			/* forbidden char */
-			if (sanitized)
-				sanitized->buf[sanitized->len-1] = '-';
-			else
-				return -1;
-			break;
-		case 5:
-			if (!(*flags & REFNAME_REFSPEC_PATTERN)) {
-				/* refspec can't be a pattern */
-				if (sanitized)
-					sanitized->buf[sanitized->len-1] = '-';
-				else
-					return -1;
-			}
-
-			/*
-			 * Unset the pattern flag so that we only accept
-			 * a single asterisk for one side of refspec.
-			 */
-			*flags &= ~ REFNAME_REFSPEC_PATTERN;
-			break;
-		}
-		last = ch;
-	}
-out:
-	if (cp == refname)
-		return 0; /* Component has zero length. */
-
-	if (refname[0] == '.') { /* Component starts with '.'. */
-		if (sanitized)
-			sanitized->buf[component_start] = '-';
-		else
-			return -1;
-	}
-	if (cp - refname >= LOCK_SUFFIX_LEN &&
-	    !memcmp(cp - LOCK_SUFFIX_LEN, LOCK_SUFFIX, LOCK_SUFFIX_LEN)) {
-		if (!sanitized)
-			return -1;
-		/* Refname ends with ".lock". */
-		while (strbuf_strip_suffix(sanitized, LOCK_SUFFIX)) {
-			/* try again in case we have .lock.lock */
-		}
-	}
-	return cp - refname;
-}
-
-static int check_or_sanitize_refname(const char *refname, int flags,
-				     struct strbuf *sanitized)
-{
-	int component_len, component_count = 0;
-
-	if (!strcmp(refname, "@")) {
-		/* Refname is a single character '@'. */
-		if (sanitized)
-			strbuf_addch(sanitized, '-');
-		else
-			return -1;
-	}
-
-	while (1) {
-		if (sanitized && sanitized->len)
-			strbuf_complete(sanitized, '/');
-
-		/* We are at the start of a path component. */
-		component_len = check_refname_component(refname, &flags,
-							sanitized);
-		if (sanitized && component_len == 0)
-			; /* OK, omit empty component */
-		else if (component_len <= 0)
-			return -1;
-
-		component_count++;
-		if (refname[component_len] == '\0')
-			break;
-		/* Skip to next component. */
-		refname += component_len + 1;
-	}
-
-	if (refname[component_len - 1] == '.') {
-		/* Refname ends with '.'. */
-		if (sanitized)
-			; /* omit ending dot */
-		else
-			return -1;
-	}
-	if (!(flags & REFNAME_ALLOW_ONELEVEL) && component_count < 2)
-		return -1; /* Refname has only one component. */
-	return 0;
-}
-
-int check_refname_format(const char *refname, int flags)
-{
-	return check_or_sanitize_refname(refname, flags, NULL);
-}
-
-void sanitize_refname_component(const char *refname, struct strbuf *out)
-{
-	if (check_or_sanitize_refname(refname, REFNAME_ALLOW_ONELEVEL, out))
-		BUG("sanitizing refname '%s' check returned error", refname);
-}
-
-int refname_is_safe(const char *refname)
-{
-	const char *rest;
-
-	if (skip_prefix(refname, "refs/", &rest)) {
-		char *buf;
-		int result;
-		size_t restlen = strlen(rest);
-
-		/* rest must not be empty, or start or end with "/" */
-		if (!restlen || *rest == '/' || rest[restlen - 1] == '/')
-			return 0;
-
-		/*
-		 * Does the refname try to escape refs/?
-		 * For example: refs/foo/../bar is safe but refs/foo/../../bar
-		 * is not.
-		 */
-		buf = xmallocz(restlen);
-		result = !normalize_path_copy(buf, rest) && !strcmp(buf, rest);
-		free(buf);
-		return result;
-	}
-
-	do {
-		if (!isupper(*refname) && *refname != '_')
-			return 0;
-		refname++;
-	} while (*refname);
-	return 1;
-}
-
-/*
- * Return true if refname, which has the specified oid and flags, can
- * be resolved to an object in the database. If the referred-to object
- * does not exist, emit a warning and return false.
- */
-int ref_resolves_to_object(const char *refname,
-			   const struct object_id *oid,
-			   unsigned int flags)
-{
-	if (flags & REF_ISBROKEN)
-		return 0;
-	if (!has_object_file(oid)) {
-		error(_("%s does not point to a valid object!"), refname);
-		return 0;
-	}
-	return 1;
-}
-
-char *refs_resolve_refdup(struct ref_store *refs,
-			  const char *refname, int resolve_flags,
-			  struct object_id *oid, int *flags)
-{
-	const char *result;
-
-	result = refs_resolve_ref_unsafe(refs, refname, resolve_flags,
-					 oid, flags);
-	return xstrdup_or_null(result);
-}
-
-char *resolve_refdup(const char *refname, int resolve_flags,
-		     struct object_id *oid, int *flags)
-{
-	return refs_resolve_refdup(get_main_ref_store(the_repository),
-				   refname, resolve_flags,
-				   oid, flags);
-}
-
-/* The argument to filter_refs */
-struct ref_filter {
-	const char *pattern;
-	const char *prefix;
-	each_ref_fn *fn;
-	void *cb_data;
-};
-
-int refs_read_ref_full(struct ref_store *refs, const char *refname,
-		       int resolve_flags, struct object_id *oid, int *flags)
-{
-	if (refs_resolve_ref_unsafe(refs, refname, resolve_flags, oid, flags))
-		return 0;
-	return -1;
-}
-
-int read_ref_full(const char *refname, int resolve_flags, struct object_id *oid, int *flags)
-{
-	return refs_read_ref_full(get_main_ref_store(the_repository), refname,
-				  resolve_flags, oid, flags);
-}
-
-int read_ref(const char *refname, struct object_id *oid)
-{
-	return read_ref_full(refname, RESOLVE_REF_READING, oid, NULL);
-}
-
-int refs_ref_exists(struct ref_store *refs, const char *refname)
-{
-	return !!refs_resolve_ref_unsafe(refs, refname, RESOLVE_REF_READING, NULL, NULL);
-}
-
-int ref_exists(const char *refname)
-{
-	return refs_ref_exists(get_main_ref_store(the_repository), refname);
-}
-
-static int filter_refs(const char *refname, const struct object_id *oid,
-			   int flags, void *data)
-{
-	struct ref_filter *filter = (struct ref_filter *)data;
-
-	if (wildmatch(filter->pattern, refname, 0))
-		return 0;
-	if (filter->prefix)
-		skip_prefix(refname, filter->prefix, &refname);
-	return filter->fn(refname, oid, flags, filter->cb_data);
-}
-
-enum peel_status peel_object(const struct object_id *name, struct object_id *oid)
-{
-	struct object *o = lookup_unknown_object(name);
-
-	if (o->type == OBJ_NONE) {
-		int type = oid_object_info(the_repository, name, NULL);
-		if (type < 0 || !object_as_type(o, type, 0))
-			return PEEL_INVALID;
-	}
-
-	if (o->type != OBJ_TAG)
-		return PEEL_NON_TAG;
-
-	o = deref_tag_noverify(o);
-	if (!o)
-		return PEEL_INVALID;
-
-	oidcpy(oid, &o->oid);
-	return PEEL_PEELED;
-}
-
-struct warn_if_dangling_data {
-	FILE *fp;
-	const char *refname;
-	const struct string_list *refnames;
-	const char *msg_fmt;
-};
-
-static int warn_if_dangling_symref(const char *refname, const struct object_id *oid,
-				   int flags, void *cb_data)
-{
-	struct warn_if_dangling_data *d = cb_data;
-	const char *resolves_to;
-
-	if (!(flags & REF_ISSYMREF))
-		return 0;
-
-	resolves_to = resolve_ref_unsafe(refname, 0, NULL, NULL);
-	if (!resolves_to
-	    || (d->refname
-		? strcmp(resolves_to, d->refname)
-		: !string_list_has_string(d->refnames, resolves_to))) {
-		return 0;
-	}
-
-	fprintf(d->fp, d->msg_fmt, refname);
-	fputc('\n', d->fp);
-	return 0;
-}
-
-void warn_dangling_symref(FILE *fp, const char *msg_fmt, const char *refname)
-{
-	struct warn_if_dangling_data data;
-
-	data.fp = fp;
-	data.refname = refname;
-	data.refnames = NULL;
-	data.msg_fmt = msg_fmt;
-	for_each_rawref(warn_if_dangling_symref, &data);
-}
-
-void warn_dangling_symrefs(FILE *fp, const char *msg_fmt, const struct string_list *refnames)
-{
-	struct warn_if_dangling_data data;
-
-	data.fp = fp;
-	data.refname = NULL;
-	data.refnames = refnames;
-	data.msg_fmt = msg_fmt;
-	for_each_rawref(warn_if_dangling_symref, &data);
-}
-
-int refs_for_each_tag_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data)
-{
-	return refs_for_each_ref_in(refs, "refs/tags/", fn, cb_data);
-}
-
-int for_each_tag_ref(each_ref_fn fn, void *cb_data)
-{
-	return refs_for_each_tag_ref(get_main_ref_store(the_repository), fn, cb_data);
-}
-
-int refs_for_each_branch_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data)
-{
-	return refs_for_each_ref_in(refs, "refs/heads/", fn, cb_data);
-}
-
-int for_each_branch_ref(each_ref_fn fn, void *cb_data)
-{
-	return refs_for_each_branch_ref(get_main_ref_store(the_repository), fn, cb_data);
-}
-
-int refs_for_each_remote_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data)
-{
-	return refs_for_each_ref_in(refs, "refs/remotes/", fn, cb_data);
-}
-
-int for_each_remote_ref(each_ref_fn fn, void *cb_data)
-{
-	return refs_for_each_remote_ref(get_main_ref_store(the_repository), fn, cb_data);
-}
-
-int head_ref_namespaced(each_ref_fn fn, void *cb_data)
-{
-	struct strbuf buf = STRBUF_INIT;
-	int ret = 0;
-	struct object_id oid;
-	int flag;
-
-	strbuf_addf(&buf, "%sHEAD", get_git_namespace());
-	if (!read_ref_full(buf.buf, RESOLVE_REF_READING, &oid, &flag))
-		ret = fn(buf.buf, &oid, flag, cb_data);
-	strbuf_release(&buf);
-
-	return ret;
-}
-
-void normalize_glob_ref(struct string_list_item *item, const char *prefix,
-			const char *pattern)
-{
-	struct strbuf normalized_pattern = STRBUF_INIT;
-
-	if (*pattern == '/')
-		BUG("pattern must not start with '/'");
-
-	if (prefix) {
-		strbuf_addstr(&normalized_pattern, prefix);
-	}
-	else if (!starts_with(pattern, "refs/"))
-		strbuf_addstr(&normalized_pattern, "refs/");
-	strbuf_addstr(&normalized_pattern, pattern);
-	strbuf_strip_suffix(&normalized_pattern, "/");
-
-	item->string = strbuf_detach(&normalized_pattern, NULL);
-	item->util = has_glob_specials(pattern) ? NULL : item->string;
-	strbuf_release(&normalized_pattern);
-}
-
-int for_each_glob_ref_in(each_ref_fn fn, const char *pattern,
-	const char *prefix, void *cb_data)
-{
-	struct strbuf real_pattern = STRBUF_INIT;
-	struct ref_filter filter;
-	int ret;
-
-	if (!prefix && !starts_with(pattern, "refs/"))
-		strbuf_addstr(&real_pattern, "refs/");
-	else if (prefix)
-		strbuf_addstr(&real_pattern, prefix);
-	strbuf_addstr(&real_pattern, pattern);
-
-	if (!has_glob_specials(pattern)) {
-		/* Append implied '/' '*' if not present. */
-		strbuf_complete(&real_pattern, '/');
-		/* No need to check for '*', there is none. */
-		strbuf_addch(&real_pattern, '*');
-	}
-
-	filter.pattern = real_pattern.buf;
-	filter.prefix = prefix;
-	filter.fn = fn;
-	filter.cb_data = cb_data;
-	ret = for_each_ref(filter_refs, &filter);
-
-	strbuf_release(&real_pattern);
-	return ret;
-}
-
-int for_each_glob_ref(each_ref_fn fn, const char *pattern, void *cb_data)
-{
-	return for_each_glob_ref_in(fn, pattern, NULL, cb_data);
-}
-
-const char *prettify_refname(const char *name)
-{
-	if (skip_prefix(name, "refs/heads/", &name) ||
-	    skip_prefix(name, "refs/tags/", &name) ||
-	    skip_prefix(name, "refs/remotes/", &name))
-		; /* nothing */
-	return name;
-}
-
-static const char *ref_rev_parse_rules[] = {
-	"%.*s",
-	"refs/%.*s",
-	"refs/tags/%.*s",
-	"refs/heads/%.*s",
-	"refs/remotes/%.*s",
-	"refs/remotes/%.*s/HEAD",
-	NULL
-};
-
-#define NUM_REV_PARSE_RULES (ARRAY_SIZE(ref_rev_parse_rules) - 1)
-
-/*
- * Is it possible that the caller meant full_name with abbrev_name?
- * If so return a non-zero value to signal "yes"; the magnitude of
- * the returned value gives the precedence used for disambiguation.
- *
- * If abbrev_name cannot mean full_name, return 0.
- */
-int refname_match(const char *abbrev_name, const char *full_name)
-{
-	const char **p;
-	const int abbrev_name_len = strlen(abbrev_name);
-	const int num_rules = NUM_REV_PARSE_RULES;
-
-	for (p = ref_rev_parse_rules; *p; p++)
-		if (!strcmp(full_name, mkpath(*p, abbrev_name_len, abbrev_name)))
-			return &ref_rev_parse_rules[num_rules] - p;
-
-	return 0;
-}
-
-/*
- * Given a 'prefix' expand it by the rules in 'ref_rev_parse_rules' and add
- * the results to 'prefixes'
- */
-void expand_ref_prefix(struct strvec *prefixes, const char *prefix)
-{
-	const char **p;
-	int len = strlen(prefix);
-
-	for (p = ref_rev_parse_rules; *p; p++)
-		strvec_pushf(prefixes, *p, len, prefix);
-}
-
-char *repo_default_branch_name(struct repository *r)
-{
-	const char *config_key = "init.defaultbranch";
-	const char *config_display_key = "init.defaultBranch";
-	char *ret = NULL, *full_ref;
-
-	if (repo_config_get_string(r, config_key, &ret) < 0)
-		die(_("could not retrieve `%s`"), config_display_key);
-
-	if (!ret)
-		ret = xstrdup("master");
-
-	full_ref = xstrfmt("refs/heads/%s", ret);
-	if (check_refname_format(full_ref, 0))
-		die(_("invalid branch name: %s = %s"), config_display_key, ret);
-	free(full_ref);
-
-	return ret;
-}
-
-const char *git_default_branch_name(void)
-{
-	static char *ret;
-
-	if (!ret)
-		ret = repo_default_branch_name(the_repository);
-
-	return ret;
-}
-
-/*
- * *string and *len will only be substituted, and *string returned (for
- * later free()ing) if the string passed in is a magic short-hand form
- * to name a branch.
- */
-static char *substitute_branch_name(struct repository *r,
-				    const char **string, int *len,
-				    int nonfatal_dangling_mark)
-{
-	struct strbuf buf = STRBUF_INIT;
-	struct interpret_branch_name_options options = {
-		.nonfatal_dangling_mark = nonfatal_dangling_mark
-	};
-	int ret = repo_interpret_branch_name(r, *string, *len, &buf, &options);
-
-	if (ret == *len) {
-		size_t size;
-		*string = strbuf_detach(&buf, &size);
-		*len = size;
-		return (char *)*string;
-	}
-
-	return NULL;
-}
-
-int repo_dwim_ref(struct repository *r, const char *str, int len,
-		  struct object_id *oid, char **ref, int nonfatal_dangling_mark)
-{
-	char *last_branch = substitute_branch_name(r, &str, &len,
-						   nonfatal_dangling_mark);
-	int   refs_found  = expand_ref(r, str, len, oid, ref);
-	free(last_branch);
-	return refs_found;
-}
-
-int expand_ref(struct repository *repo, const char *str, int len,
-	       struct object_id *oid, char **ref)
-{
-	const char **p, *r;
-	int refs_found = 0;
-	struct strbuf fullref = STRBUF_INIT;
-
-	*ref = NULL;
-	for (p = ref_rev_parse_rules; *p; p++) {
-		struct object_id oid_from_ref;
-		struct object_id *this_result;
-		int flag;
-
-		this_result = refs_found ? &oid_from_ref : oid;
-		strbuf_reset(&fullref);
-		strbuf_addf(&fullref, *p, len, str);
-		r = refs_resolve_ref_unsafe(get_main_ref_store(repo),
-					    fullref.buf, RESOLVE_REF_READING,
-					    this_result, &flag);
-		if (r) {
-			if (!refs_found++)
-				*ref = xstrdup(r);
-			if (!warn_ambiguous_refs)
-				break;
-		} else if ((flag & REF_ISSYMREF) && strcmp(fullref.buf, "HEAD")) {
-			warning(_("ignoring dangling symref %s"), fullref.buf);
-		} else if ((flag & REF_ISBROKEN) && strchr(fullref.buf, '/')) {
-			warning(_("ignoring broken ref %s"), fullref.buf);
-		}
-	}
-	strbuf_release(&fullref);
-	return refs_found;
-}
-
-int repo_dwim_log(struct repository *r, const char *str, int len,
-		  struct object_id *oid, char **log)
-{
-	struct ref_store *refs = get_main_ref_store(r);
-	char *last_branch = substitute_branch_name(r, &str, &len, 0);
-	const char **p;
-	int logs_found = 0;
-	struct strbuf path = STRBUF_INIT;
-
-	*log = NULL;
-	for (p = ref_rev_parse_rules; *p; p++) {
-		struct object_id hash;
-		const char *ref, *it;
-
-		strbuf_reset(&path);
-		strbuf_addf(&path, *p, len, str);
-		ref = refs_resolve_ref_unsafe(refs, path.buf,
-					      RESOLVE_REF_READING,
-					      &hash, NULL);
-		if (!ref)
-			continue;
-		if (refs_reflog_exists(refs, path.buf))
-			it = path.buf;
-		else if (strcmp(ref, path.buf) &&
-			 refs_reflog_exists(refs, ref))
-			it = ref;
-		else
-			continue;
-		if (!logs_found++) {
-			*log = xstrdup(it);
-			oidcpy(oid, &hash);
-		}
-		if (!warn_ambiguous_refs)
-			break;
-	}
-	strbuf_release(&path);
-	free(last_branch);
-	return logs_found;
-}
-
-int dwim_log(const char *str, int len, struct object_id *oid, char **log)
-{
-	return repo_dwim_log(the_repository, str, len, oid, log);
-}
-
-static int is_per_worktree_ref(const char *refname)
-{
-	return starts_with(refname, "refs/worktree/") ||
-	       starts_with(refname, "refs/bisect/") ||
-	       starts_with(refname, "refs/rewritten/");
-}
-
-static int is_pseudoref_syntax(const char *refname)
-{
-	const char *c;
-
-	for (c = refname; *c; c++) {
-		if (!isupper(*c) && *c != '-' && *c != '_')
-			return 0;
-	}
-
-	return 1;
-}
-
-static int is_main_pseudoref_syntax(const char *refname)
-{
-	return skip_prefix(refname, "main-worktree/", &refname) &&
-		*refname &&
-		is_pseudoref_syntax(refname);
-}
-
-static int is_other_pseudoref_syntax(const char *refname)
-{
-	if (!skip_prefix(refname, "worktrees/", &refname))
-		return 0;
-	refname = strchr(refname, '/');
-	if (!refname || !refname[1])
-		return 0;
-	return is_pseudoref_syntax(refname + 1);
-}
-
-enum ref_type ref_type(const char *refname)
-{
-	if (is_per_worktree_ref(refname))
-		return REF_TYPE_PER_WORKTREE;
-	if (is_pseudoref_syntax(refname))
-		return REF_TYPE_PSEUDOREF;
-	if (is_main_pseudoref_syntax(refname))
-		return REF_TYPE_MAIN_PSEUDOREF;
-	if (is_other_pseudoref_syntax(refname))
-		return REF_TYPE_OTHER_PSEUDOREF;
-	return REF_TYPE_NORMAL;
-}
-
-long get_files_ref_lock_timeout_ms(void)
-{
-	static int configured = 0;
-
-	/* The default timeout is 100 ms: */
-	static int timeout_ms = 100;
-
-	if (!configured) {
-		git_config_get_int("core.filesreflocktimeout", &timeout_ms);
-		configured = 1;
-	}
-
-	return timeout_ms;
-}
-
-int refs_delete_ref(struct ref_store *refs, const char *msg,
-		    const char *refname,
-		    const struct object_id *old_oid,
-		    unsigned int flags)
-{
-	struct ref_transaction *transaction;
-	struct strbuf err = STRBUF_INIT;
-
-	transaction = ref_store_transaction_begin(refs, &err);
-	if (!transaction ||
-	    ref_transaction_delete(transaction, refname, old_oid,
-				   flags, msg, &err) ||
-	    ref_transaction_commit(transaction, &err)) {
-		error("%s", err.buf);
-		ref_transaction_free(transaction);
-		strbuf_release(&err);
-		return 1;
-	}
-	ref_transaction_free(transaction);
-	strbuf_release(&err);
-	return 0;
-}
-
-int delete_ref(const char *msg, const char *refname,
-	       const struct object_id *old_oid, unsigned int flags)
-{
-	return refs_delete_ref(get_main_ref_store(the_repository), msg, refname,
-			       old_oid, flags);
-}
-
-static void copy_reflog_msg(struct strbuf *sb, const char *msg)
-{
-	char c;
-	int wasspace = 1;
-
-	while ((c = *msg++)) {
-		if (wasspace && isspace(c))
-			continue;
-		wasspace = isspace(c);
-		if (wasspace)
-			c = ' ';
-		strbuf_addch(sb, c);
-	}
-	strbuf_rtrim(sb);
-}
-
-static char *normalize_reflog_message(const char *msg)
-{
-	struct strbuf sb = STRBUF_INIT;
-
-	if (msg && *msg)
-		copy_reflog_msg(&sb, msg);
-	return strbuf_detach(&sb, NULL);
-}
-
-int should_autocreate_reflog(const char *refname)
-{
-	switch (log_all_ref_updates) {
-	case LOG_REFS_ALWAYS:
-		return 1;
-	case LOG_REFS_NORMAL:
-		return starts_with(refname, "refs/heads/") ||
-			starts_with(refname, "refs/remotes/") ||
-			starts_with(refname, "refs/notes/") ||
-			!strcmp(refname, "HEAD");
-	default:
-		return 0;
-	}
-}
-
-int is_branch(const char *refname)
-{
-	return !strcmp(refname, "HEAD") || starts_with(refname, "refs/heads/");
-}
-
-struct read_ref_at_cb {
-	const char *refname;
-	timestamp_t at_time;
-	int cnt;
-	int reccnt;
-	struct object_id *oid;
-	int found_it;
-
-	struct object_id ooid;
-	struct object_id noid;
-	int tz;
-	timestamp_t date;
-	char **msg;
-	timestamp_t *cutoff_time;
-	int *cutoff_tz;
-	int *cutoff_cnt;
-};
-
-static int read_ref_at_ent(struct object_id *ooid, struct object_id *noid,
-		const char *email, timestamp_t timestamp, int tz,
-		const char *message, void *cb_data)
-{
-	struct read_ref_at_cb *cb = cb_data;
-
-	cb->reccnt++;
-	cb->tz = tz;
-	cb->date = timestamp;
-
-	if (timestamp <= cb->at_time || cb->cnt == 0) {
-		if (cb->msg)
-			*cb->msg = xstrdup(message);
-		if (cb->cutoff_time)
-			*cb->cutoff_time = timestamp;
-		if (cb->cutoff_tz)
-			*cb->cutoff_tz = tz;
-		if (cb->cutoff_cnt)
-			*cb->cutoff_cnt = cb->reccnt - 1;
-		/*
-		 * we have not yet updated cb->[n|o]oid so they still
-		 * hold the values for the previous record.
-		 */
-		if (!is_null_oid(&cb->ooid)) {
-			oidcpy(cb->oid, noid);
-			if (!oideq(&cb->ooid, noid))
-				warning(_("log for ref %s has gap after %s"),
-					cb->refname, show_date(cb->date, cb->tz, DATE_MODE(RFC2822)));
-		}
-		else if (cb->date == cb->at_time)
-			oidcpy(cb->oid, noid);
-		else if (!oideq(noid, cb->oid))
-			warning(_("log for ref %s unexpectedly ended on %s"),
-				cb->refname, show_date(cb->date, cb->tz,
-						       DATE_MODE(RFC2822)));
-		oidcpy(&cb->ooid, ooid);
-		oidcpy(&cb->noid, noid);
-		cb->found_it = 1;
-		return 1;
-	}
-	oidcpy(&cb->ooid, ooid);
-	oidcpy(&cb->noid, noid);
-	if (cb->cnt > 0)
-		cb->cnt--;
-	return 0;
-}
-
-static int read_ref_at_ent_oldest(struct object_id *ooid, struct object_id *noid,
-				  const char *email, timestamp_t timestamp,
-				  int tz, const char *message, void *cb_data)
-{
-	struct read_ref_at_cb *cb = cb_data;
-
-	if (cb->msg)
-		*cb->msg = xstrdup(message);
-	if (cb->cutoff_time)
-		*cb->cutoff_time = timestamp;
-	if (cb->cutoff_tz)
-		*cb->cutoff_tz = tz;
-	if (cb->cutoff_cnt)
-		*cb->cutoff_cnt = cb->reccnt;
-	oidcpy(cb->oid, ooid);
-	if (is_null_oid(cb->oid))
-		oidcpy(cb->oid, noid);
-	/* We just want the first entry */
-	return 1;
-}
-
-int read_ref_at(struct ref_store *refs, const char *refname,
-		unsigned int flags, timestamp_t at_time, int cnt,
-		struct object_id *oid, char **msg,
-		timestamp_t *cutoff_time, int *cutoff_tz, int *cutoff_cnt)
-{
-	struct read_ref_at_cb cb;
-
-	memset(&cb, 0, sizeof(cb));
-	cb.refname = refname;
-	cb.at_time = at_time;
-	cb.cnt = cnt;
-	cb.msg = msg;
-	cb.cutoff_time = cutoff_time;
-	cb.cutoff_tz = cutoff_tz;
-	cb.cutoff_cnt = cutoff_cnt;
-	cb.oid = oid;
-
-	refs_for_each_reflog_ent_reverse(refs, refname, read_ref_at_ent, &cb);
-
-	if (!cb.reccnt) {
-		if (flags & GET_OID_QUIETLY)
-			exit(128);
-		else
-			die(_("log for %s is empty"), refname);
-	}
-	if (cb.found_it)
-		return 0;
-
-	refs_for_each_reflog_ent(refs, refname, read_ref_at_ent_oldest, &cb);
-
-	return 1;
-}
-
-struct ref_transaction *ref_store_transaction_begin(struct ref_store *refs,
-						    struct strbuf *err)
-{
-	struct ref_transaction *tr;
-	assert(err);
-
-	tr = xcalloc(1, sizeof(struct ref_transaction));
-	tr->ref_store = refs;
-	return tr;
-}
-
-struct ref_transaction *ref_transaction_begin(struct strbuf *err)
-{
-	return ref_store_transaction_begin(get_main_ref_store(the_repository), err);
-}
-
-void ref_transaction_free(struct ref_transaction *transaction)
-{
-	size_t i;
-
-	if (!transaction)
-		return;
-
-	switch (transaction->state) {
-	case REF_TRANSACTION_OPEN:
-	case REF_TRANSACTION_CLOSED:
-		/* OK */
-		break;
-	case REF_TRANSACTION_PREPARED:
-		BUG("free called on a prepared reference transaction");
-		break;
-	default:
-		BUG("unexpected reference transaction state");
-		break;
-	}
-
-	for (i = 0; i < transaction->nr; i++) {
-		free(transaction->updates[i]->msg);
-		free(transaction->updates[i]);
-	}
-	free(transaction->updates);
-	free(transaction);
-}
-
-struct ref_update *ref_transaction_add_update(
-		struct ref_transaction *transaction,
-		const char *refname, unsigned int flags,
-		const struct object_id *new_oid,
-		const struct object_id *old_oid,
-		const char *msg)
-{
-	struct ref_update *update;
-
-	if (transaction->state != REF_TRANSACTION_OPEN)
-		BUG("update called for transaction that is not open");
-
-	FLEX_ALLOC_STR(update, refname, refname);
-	ALLOC_GROW(transaction->updates, transaction->nr + 1, transaction->alloc);
-	transaction->updates[transaction->nr++] = update;
-
-	update->flags = flags;
-
-	if (flags & REF_HAVE_NEW)
-		oidcpy(&update->new_oid, new_oid);
-	if (flags & REF_HAVE_OLD)
-		oidcpy(&update->old_oid, old_oid);
-	update->msg = normalize_reflog_message(msg);
-	return update;
-}
-
-int ref_transaction_update(struct ref_transaction *transaction,
-			   const char *refname,
-			   const struct object_id *new_oid,
-			   const struct object_id *old_oid,
-			   unsigned int flags, const char *msg,
-			   struct strbuf *err)
-{
-	assert(err);
-
-	if ((new_oid && !is_null_oid(new_oid)) ?
-	    check_refname_format(refname, REFNAME_ALLOW_ONELEVEL) :
-	    !refname_is_safe(refname)) {
-		strbuf_addf(err, _("refusing to update ref with bad name '%s'"),
-			    refname);
-		return -1;
-	}
-
-	if (flags & ~REF_TRANSACTION_UPDATE_ALLOWED_FLAGS)
-		BUG("illegal flags 0x%x passed to ref_transaction_update()", flags);
-
-	flags |= (new_oid ? REF_HAVE_NEW : 0) | (old_oid ? REF_HAVE_OLD : 0);
-
-	ref_transaction_add_update(transaction, refname, flags,
-				   new_oid, old_oid, msg);
-	return 0;
-}
-
-int ref_transaction_create(struct ref_transaction *transaction,
-			   const char *refname,
-			   const struct object_id *new_oid,
-			   unsigned int flags, const char *msg,
-			   struct strbuf *err)
-{
-	if (!new_oid || is_null_oid(new_oid))
-		BUG("create called without valid new_oid");
-	return ref_transaction_update(transaction, refname, new_oid,
-				      &null_oid, flags, msg, err);
-}
-
-int ref_transaction_delete(struct ref_transaction *transaction,
-			   const char *refname,
-			   const struct object_id *old_oid,
-			   unsigned int flags, const char *msg,
-			   struct strbuf *err)
-{
-	if (old_oid && is_null_oid(old_oid))
-		BUG("delete called with old_oid set to zeros");
-	return ref_transaction_update(transaction, refname,
-				      &null_oid, old_oid,
-				      flags, msg, err);
-}
-
-int ref_transaction_verify(struct ref_transaction *transaction,
-			   const char *refname,
-			   const struct object_id *old_oid,
-			   unsigned int flags,
-			   struct strbuf *err)
-{
-	if (!old_oid)
-		BUG("verify called with old_oid set to NULL");
-	return ref_transaction_update(transaction, refname,
-				      NULL, old_oid,
-				      flags, NULL, err);
-}
-
-int refs_update_ref(struct ref_store *refs, const char *msg,
-		    const char *refname, const struct object_id *new_oid,
-		    const struct object_id *old_oid, unsigned int flags,
-		    enum action_on_err onerr)
-{
-	struct ref_transaction *t = NULL;
-	struct strbuf err = STRBUF_INIT;
-	int ret = 0;
-
-	t = ref_store_transaction_begin(refs, &err);
-	if (!t ||
-	    ref_transaction_update(t, refname, new_oid, old_oid, flags, msg,
-				   &err) ||
-	    ref_transaction_commit(t, &err)) {
-		ret = 1;
-		ref_transaction_free(t);
-	}
-	if (ret) {
-		const char *str = _("update_ref failed for ref '%s': %s");
-
-		switch (onerr) {
-		case UPDATE_REFS_MSG_ON_ERR:
-			error(str, refname, err.buf);
-			break;
-		case UPDATE_REFS_DIE_ON_ERR:
-			die(str, refname, err.buf);
-			break;
-		case UPDATE_REFS_QUIET_ON_ERR:
-			break;
-		}
-		strbuf_release(&err);
-		return 1;
-	}
-	strbuf_release(&err);
-	if (t)
-		ref_transaction_free(t);
-	return 0;
-}
-
-int update_ref(const char *msg, const char *refname,
-	       const struct object_id *new_oid,
-	       const struct object_id *old_oid,
-	       unsigned int flags, enum action_on_err onerr)
-{
-	return refs_update_ref(get_main_ref_store(the_repository), msg, refname, new_oid,
-			       old_oid, flags, onerr);
-}
-
-char *refs_shorten_unambiguous_ref(struct ref_store *refs,
-				   const char *refname, int strict)
-{
-	int i;
-	static char **scanf_fmts;
-	static int nr_rules;
-	char *short_name;
-	struct strbuf resolved_buf = STRBUF_INIT;
-
-	if (!nr_rules) {
-		/*
-		 * Pre-generate scanf formats from ref_rev_parse_rules[].
-		 * Generate a format suitable for scanf from a
-		 * ref_rev_parse_rules rule by interpolating "%s" at the
-		 * location of the "%.*s".
-		 */
-		size_t total_len = 0;
-		size_t offset = 0;
-
-		/* the rule list is NULL terminated, count them first */
-		for (nr_rules = 0; ref_rev_parse_rules[nr_rules]; nr_rules++)
-			/* -2 for strlen("%.*s") - strlen("%s"); +1 for NUL */
-			total_len += strlen(ref_rev_parse_rules[nr_rules]) - 2 + 1;
-
-		scanf_fmts = xmalloc(st_add(st_mult(sizeof(char *), nr_rules), total_len));
-
-		offset = 0;
-		for (i = 0; i < nr_rules; i++) {
-			assert(offset < total_len);
-			scanf_fmts[i] = (char *)&scanf_fmts[nr_rules] + offset;
-			offset += xsnprintf(scanf_fmts[i], total_len - offset,
-					    ref_rev_parse_rules[i], 2, "%s") + 1;
-		}
-	}
-
-	/* bail out if there are no rules */
-	if (!nr_rules)
-		return xstrdup(refname);
-
-	/* buffer for scanf result, at most refname must fit */
-	short_name = xstrdup(refname);
-
-	/* skip first rule, it will always match */
-	for (i = nr_rules - 1; i > 0 ; --i) {
-		int j;
-		int rules_to_fail = i;
-		int short_name_len;
-
-		if (1 != sscanf(refname, scanf_fmts[i], short_name))
-			continue;
-
-		short_name_len = strlen(short_name);
-
-		/*
-		 * in strict mode, all (except the matched one) rules
-		 * must fail to resolve to a valid non-ambiguous ref
-		 */
-		if (strict)
-			rules_to_fail = nr_rules;
-
-		/*
-		 * check if the short name resolves to a valid ref,
-		 * but use only rules prior to the matched one
-		 */
-		for (j = 0; j < rules_to_fail; j++) {
-			const char *rule = ref_rev_parse_rules[j];
-
-			/* skip matched rule */
-			if (i == j)
-				continue;
-
-			/*
-			 * the short name is ambiguous, if it resolves
-			 * (with this previous rule) to a valid ref
-			 * read_ref() returns 0 on success
-			 */
-			strbuf_reset(&resolved_buf);
-			strbuf_addf(&resolved_buf, rule,
-				    short_name_len, short_name);
-			if (refs_ref_exists(refs, resolved_buf.buf))
-				break;
-		}
-
-		/*
-		 * short name is non-ambiguous if all previous rules
-		 * haven't resolved to a valid ref
-		 */
-		if (j == rules_to_fail) {
-			strbuf_release(&resolved_buf);
-			return short_name;
-		}
-	}
-
-	strbuf_release(&resolved_buf);
-	free(short_name);
-	return xstrdup(refname);
-}
-
-char *shorten_unambiguous_ref(const char *refname, int strict)
-{
-	return refs_shorten_unambiguous_ref(get_main_ref_store(the_repository),
-					    refname, strict);
-}
-
-static struct string_list *hide_refs;
-
-int parse_hide_refs_config(const char *var, const char *value, const char *section)
-{
-	const char *key;
-	if (!strcmp("transfer.hiderefs", var) ||
-	    (!parse_config_key(var, section, NULL, NULL, &key) &&
-	     !strcmp(key, "hiderefs"))) {
-		char *ref;
-		int len;
-
-		if (!value)
-			return config_error_nonbool(var);
-		ref = xstrdup(value);
-		len = strlen(ref);
-		while (len && ref[len - 1] == '/')
-			ref[--len] = '\0';
-		if (!hide_refs) {
-			hide_refs = xcalloc(1, sizeof(*hide_refs));
-			hide_refs->strdup_strings = 1;
-		}
-		string_list_append(hide_refs, ref);
-	}
-	return 0;
-}
-
-int ref_is_hidden(const char *refname, const char *refname_full)
-{
-	int i;
-
-	if (!hide_refs)
-		return 0;
-	for (i = hide_refs->nr - 1; i >= 0; i--) {
-		const char *match = hide_refs->items[i].string;
-		const char *subject;
-		int neg = 0;
-		const char *p;
-
-		if (*match == '!') {
-			neg = 1;
-			match++;
-		}
-
-		if (*match == '^') {
-			subject = refname_full;
-			match++;
-		} else {
-			subject = refname;
-		}
-
-		/* refname can be NULL when namespaces are used. */
-		if (subject &&
-		    skip_prefix(subject, match, &p) &&
-		    (!*p || *p == '/'))
-			return !neg;
-	}
-	return 0;
-}
-
-const char *find_descendant_ref(const char *dirname,
-				const struct string_list *extras,
-				const struct string_list *skip)
-{
-	int pos;
-
-	if (!extras)
-		return NULL;
-
-	/*
-	 * Look at the place where dirname would be inserted into
-	 * extras. If there is an entry at that position that starts
-	 * with dirname (remember, dirname includes the trailing
-	 * slash) and is not in skip, then we have a conflict.
-	 */
-	for (pos = string_list_find_insert_index(extras, dirname, 0);
-	     pos < extras->nr; pos++) {
-		const char *extra_refname = extras->items[pos].string;
-
-		if (!starts_with(extra_refname, dirname))
-			break;
-
-		if (!skip || !string_list_has_string(skip, extra_refname))
-			return extra_refname;
-	}
-	return NULL;
-}
-
-int refs_rename_ref_available(struct ref_store *refs,
-			      const char *old_refname,
-			      const char *new_refname)
-{
-	struct string_list skip = STRING_LIST_INIT_NODUP;
-	struct strbuf err = STRBUF_INIT;
-	int ok;
-
-	string_list_insert(&skip, old_refname);
-	ok = !refs_verify_refname_available(refs, new_refname,
-					    NULL, &skip, &err);
-	if (!ok)
-		error("%s", err.buf);
-
-	string_list_clear(&skip, 0);
-	strbuf_release(&err);
-	return ok;
-}
-
-int refs_head_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data)
-{
-	struct object_id oid;
-	int flag;
-
-	if (!refs_read_ref_full(refs, "HEAD", RESOLVE_REF_READING,
-				&oid, &flag))
-		return fn("HEAD", &oid, flag, cb_data);
-
-	return 0;
-}
-
-int head_ref(each_ref_fn fn, void *cb_data)
-{
-	return refs_head_ref(get_main_ref_store(the_repository), fn, cb_data);
-}
-
-struct ref_iterator *refs_ref_iterator_begin(
-		struct ref_store *refs,
-		const char *prefix, int trim, int flags)
-{
-	struct ref_iterator *iter;
-
-	if (ref_paranoia < 0)
-		ref_paranoia = git_env_bool("GIT_REF_PARANOIA", 0);
-	if (ref_paranoia)
-		flags |= DO_FOR_EACH_INCLUDE_BROKEN;
-
-	iter = refs->be->iterator_begin(refs, prefix, flags);
-
-	/*
-	 * `iterator_begin()` already takes care of prefix, but we
-	 * might need to do some trimming:
-	 */
-	if (trim)
-		iter = prefix_ref_iterator_begin(iter, "", trim);
-
-	/* Sanity check for subclasses: */
-	if (!iter->ordered)
-		BUG("reference iterator is not ordered");
-
-	return iter;
-}
-
-/*
- * Call fn for each reference in the specified submodule for which the
- * refname begins with prefix. If trim is non-zero, then trim that
- * many characters off the beginning of each refname before passing
- * the refname to fn. flags can be DO_FOR_EACH_INCLUDE_BROKEN to
- * include broken references in the iteration. If fn ever returns a
- * non-zero value, stop the iteration and return that value;
- * otherwise, return 0.
- */
-static int do_for_each_repo_ref(struct repository *r, const char *prefix,
-				each_repo_ref_fn fn, int trim, int flags,
-				void *cb_data)
-{
-	struct ref_iterator *iter;
-	struct ref_store *refs = get_main_ref_store(r);
-
-	if (!refs)
-		return 0;
-
-	iter = refs_ref_iterator_begin(refs, prefix, trim, flags);
-
-	return do_for_each_repo_ref_iterator(r, iter, fn, cb_data);
-}
-
-struct do_for_each_ref_help {
-	each_ref_fn *fn;
-	void *cb_data;
-};
-
-static int do_for_each_ref_helper(struct repository *r,
-				  const char *refname,
-				  const struct object_id *oid,
-				  int flags,
-				  void *cb_data)
-{
-	struct do_for_each_ref_help *hp = cb_data;
-
-	return hp->fn(refname, oid, flags, hp->cb_data);
-}
-
-static int do_for_each_ref(struct ref_store *refs, const char *prefix,
-			   each_ref_fn fn, int trim, int flags, void *cb_data)
-{
-	struct ref_iterator *iter;
-	struct do_for_each_ref_help hp = { fn, cb_data };
-
-	if (!refs)
-		return 0;
-
-	iter = refs_ref_iterator_begin(refs, prefix, trim, flags);
-
-	return do_for_each_repo_ref_iterator(the_repository, iter,
-					do_for_each_ref_helper, &hp);
-}
-
-int refs_for_each_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data)
-{
-	return do_for_each_ref(refs, "", fn, 0, 0, cb_data);
-}
-
-int for_each_ref(each_ref_fn fn, void *cb_data)
-{
-	return refs_for_each_ref(get_main_ref_store(the_repository), fn, cb_data);
-}
-
-int refs_for_each_ref_in(struct ref_store *refs, const char *prefix,
-			 each_ref_fn fn, void *cb_data)
-{
-	return do_for_each_ref(refs, prefix, fn, strlen(prefix), 0, cb_data);
-}
-
-int for_each_ref_in(const char *prefix, each_ref_fn fn, void *cb_data)
-{
-	return refs_for_each_ref_in(get_main_ref_store(the_repository), prefix, fn, cb_data);
-}
-
-int for_each_fullref_in(const char *prefix, each_ref_fn fn, void *cb_data, unsigned int broken)
-{
-	unsigned int flag = 0;
-
-	if (broken)
-		flag = DO_FOR_EACH_INCLUDE_BROKEN;
-	return do_for_each_ref(get_main_ref_store(the_repository),
-			       prefix, fn, 0, flag, cb_data);
-}
-
-int refs_for_each_fullref_in(struct ref_store *refs, const char *prefix,
-			     each_ref_fn fn, void *cb_data,
-			     unsigned int broken)
-{
-	unsigned int flag = 0;
-
-	if (broken)
-		flag = DO_FOR_EACH_INCLUDE_BROKEN;
-	return do_for_each_ref(refs, prefix, fn, 0, flag, cb_data);
-}
-
-int for_each_replace_ref(struct repository *r, each_repo_ref_fn fn, void *cb_data)
-{
-	return do_for_each_repo_ref(r, git_replace_ref_base, fn,
-				    strlen(git_replace_ref_base),
-				    DO_FOR_EACH_INCLUDE_BROKEN, cb_data);
-}
-
-int for_each_namespaced_ref(each_ref_fn fn, void *cb_data)
-{
-	struct strbuf buf = STRBUF_INIT;
-	int ret;
-	strbuf_addf(&buf, "%srefs/", get_git_namespace());
-	ret = do_for_each_ref(get_main_ref_store(the_repository),
-			      buf.buf, fn, 0, 0, cb_data);
-	strbuf_release(&buf);
-	return ret;
-}
-
-int refs_for_each_rawref(struct ref_store *refs, each_ref_fn fn, void *cb_data)
-{
-	return do_for_each_ref(refs, "", fn, 0,
-			       DO_FOR_EACH_INCLUDE_BROKEN, cb_data);
-}
-
-int for_each_rawref(each_ref_fn fn, void *cb_data)
-{
-	return refs_for_each_rawref(get_main_ref_store(the_repository), fn, cb_data);
-}
-
-static int refs_read_special_head(struct ref_store *ref_store,
-				  const char *refname, struct object_id *oid,
-				  struct strbuf *referent, unsigned int *type)
-{
-	struct strbuf full_path = STRBUF_INIT;
-	struct strbuf content = STRBUF_INIT;
-	int result = -1;
-	strbuf_addf(&full_path, "%s/%s", ref_store->gitdir, refname);
-
-	if (strbuf_read_file(&content, full_path.buf, 0) < 0)
-		goto done;
-
-	result = parse_loose_ref_contents(content.buf, oid, referent, type);
-
-done:
-	strbuf_release(&full_path);
-	strbuf_release(&content);
-	return result;
-}
-
-int refs_read_raw_ref(struct ref_store *ref_store,
-		      const char *refname, struct object_id *oid,
-		      struct strbuf *referent, unsigned int *type)
-{
-	if (!strcmp(refname, "FETCH_HEAD") || !strcmp(refname, "MERGE_HEAD")) {
-		return refs_read_special_head(ref_store, refname, oid, referent,
-					      type);
-	}
-
-	return ref_store->be->read_raw_ref(ref_store, refname, oid, referent,
-					   type);
-}
-
-/* This function needs to return a meaningful errno on failure */
-const char *refs_resolve_ref_unsafe(struct ref_store *refs,
-				    const char *refname,
-				    int resolve_flags,
-				    struct object_id *oid, int *flags)
-{
-	static struct strbuf sb_refname = STRBUF_INIT;
-	struct object_id unused_oid;
-	int unused_flags;
-	int symref_count;
-
-	if (!oid)
-		oid = &unused_oid;
-	if (!flags)
-		flags = &unused_flags;
-
-	*flags = 0;
-
-	if (check_refname_format(refname, REFNAME_ALLOW_ONELEVEL)) {
-		if (!(resolve_flags & RESOLVE_REF_ALLOW_BAD_NAME) ||
-		    !refname_is_safe(refname)) {
-			errno = EINVAL;
-			return NULL;
-		}
-
-		/*
-		 * dwim_ref() uses REF_ISBROKEN to distinguish between
-		 * missing refs and refs that were present but invalid,
-		 * to complain about the latter to stderr.
-		 *
-		 * We don't know whether the ref exists, so don't set
-		 * REF_ISBROKEN yet.
-		 */
-		*flags |= REF_BAD_NAME;
-	}
-
-	for (symref_count = 0; symref_count < SYMREF_MAXDEPTH; symref_count++) {
-		unsigned int read_flags = 0;
-
-		if (refs_read_raw_ref(refs, refname,
-				      oid, &sb_refname, &read_flags)) {
-			*flags |= read_flags;
-
-			/* In reading mode, refs must eventually resolve */
-			if (resolve_flags & RESOLVE_REF_READING)
-				return NULL;
-
-			/*
-			 * Otherwise a missing ref is OK. But the files backend
-			 * may show errors besides ENOENT if there are
-			 * similarly-named refs.
-			 */
-			if (errno != ENOENT &&
-			    errno != EISDIR &&
-			    errno != ENOTDIR)
-				return NULL;
-
-			oidclr(oid);
-			if (*flags & REF_BAD_NAME)
-				*flags |= REF_ISBROKEN;
-			return refname;
-		}
-
-		*flags |= read_flags;
-
-		if (!(read_flags & REF_ISSYMREF)) {
-			if (*flags & REF_BAD_NAME) {
-				oidclr(oid);
-				*flags |= REF_ISBROKEN;
-			}
-			return refname;
-		}
-
-		refname = sb_refname.buf;
-		if (resolve_flags & RESOLVE_REF_NO_RECURSE) {
-			oidclr(oid);
-			return refname;
-		}
-		if (check_refname_format(refname, REFNAME_ALLOW_ONELEVEL)) {
-			if (!(resolve_flags & RESOLVE_REF_ALLOW_BAD_NAME) ||
-			    !refname_is_safe(refname)) {
-				errno = EINVAL;
-				return NULL;
-			}
-
-			*flags |= REF_ISBROKEN | REF_BAD_NAME;
-		}
-	}
-
-	errno = ELOOP;
-	return NULL;
-}
-
-/* backend functions */
-int refs_init_db(struct strbuf *err)
-{
-	struct ref_store *refs = get_main_ref_store(the_repository);
-
-	return refs->be->init_db(refs, err);
-}
-
-const char *resolve_ref_unsafe(const char *refname, int resolve_flags,
-			       struct object_id *oid, int *flags)
-{
-	return refs_resolve_ref_unsafe(get_main_ref_store(the_repository), refname,
-				       resolve_flags, oid, flags);
-}
-
-int resolve_gitlink_ref(const char *submodule, const char *refname,
-			struct object_id *oid)
-{
-	struct ref_store *refs;
-	int flags;
-
-	refs = get_submodule_ref_store(submodule);
-
-	if (!refs)
-		return -1;
-
-	if (!refs_resolve_ref_unsafe(refs, refname, 0, oid, &flags) ||
-	    is_null_oid(oid))
-		return -1;
-	return 0;
-}
-
-struct ref_store_hash_entry
-{
-	struct hashmap_entry ent;
-
-	struct ref_store *refs;
-
-	/* NUL-terminated identifier of the ref store: */
-	char name[FLEX_ARRAY];
-};
-
-static int ref_store_hash_cmp(const void *unused_cmp_data,
-			      const struct hashmap_entry *eptr,
-			      const struct hashmap_entry *entry_or_key,
-			      const void *keydata)
-{
-	const struct ref_store_hash_entry *e1, *e2;
-	const char *name;
-
-	e1 = container_of(eptr, const struct ref_store_hash_entry, ent);
-	e2 = container_of(entry_or_key, const struct ref_store_hash_entry, ent);
-	name = keydata ? keydata : e2->name;
-
-	return strcmp(e1->name, name);
-}
-
-static struct ref_store_hash_entry *alloc_ref_store_hash_entry(
-		const char *name, struct ref_store *refs)
-{
-	struct ref_store_hash_entry *entry;
-
-	FLEX_ALLOC_STR(entry, name, name);
-	hashmap_entry_init(&entry->ent, strhash(name));
-	entry->refs = refs;
-	return entry;
-}
-
-/* A hashmap of ref_stores, stored by submodule name: */
-static struct hashmap submodule_ref_stores;
-
-/* A hashmap of ref_stores, stored by worktree id: */
-static struct hashmap worktree_ref_stores;
-
-/*
- * Look up a ref store by name. If that ref_store hasn't been
- * registered yet, return NULL.
- */
-static struct ref_store *lookup_ref_store_map(struct hashmap *map,
-					      const char *name)
-{
-	struct ref_store_hash_entry *entry;
-	unsigned int hash;
-
-	if (!map->tablesize)
-		/* It's initialized on demand in register_ref_store(). */
-		return NULL;
-
-	hash = strhash(name);
-	entry = hashmap_get_entry_from_hash(map, hash, name,
-					struct ref_store_hash_entry, ent);
-	return entry ? entry->refs : NULL;
-}
-
-/*
- * Create, record, and return a ref_store instance for the specified
- * gitdir.
- */
-static struct ref_store *ref_store_init(const char *gitdir,
-					unsigned int flags)
-{
-	const char *be_name = "files";
-	struct ref_storage_be *be = find_ref_storage_backend(be_name);
-	struct ref_store *refs;
-
-	if (!be)
-		BUG("reference backend %s is unknown", be_name);
-
-	refs = be->init(gitdir, flags);
-	return refs;
-}
-
-struct ref_store *get_main_ref_store(struct repository *r)
-{
-	if (r->refs_private)
-		return r->refs_private;
-
-	if (!r->gitdir)
-		BUG("attempting to get main_ref_store outside of repository");
-
-	r->refs_private = ref_store_init(r->gitdir, REF_STORE_ALL_CAPS);
-	r->refs_private = maybe_debug_wrap_ref_store(r->gitdir, r->refs_private);
-	return r->refs_private;
-}
-
-/*
- * Associate a ref store with a name. It is a fatal error to call this
- * function twice for the same name.
- */
-static void register_ref_store_map(struct hashmap *map,
-				   const char *type,
-				   struct ref_store *refs,
-				   const char *name)
-{
-	struct ref_store_hash_entry *entry;
-
-	if (!map->tablesize)
-		hashmap_init(map, ref_store_hash_cmp, NULL, 0);
-
-	entry = alloc_ref_store_hash_entry(name, refs);
-	if (hashmap_put(map, &entry->ent))
-		BUG("%s ref_store '%s' initialized twice", type, name);
-}
-
-struct ref_store *get_submodule_ref_store(const char *submodule)
-{
-	struct strbuf submodule_sb = STRBUF_INIT;
-	struct ref_store *refs;
-	char *to_free = NULL;
-	size_t len;
-
-	if (!submodule)
-		return NULL;
-
-	len = strlen(submodule);
-	while (len && is_dir_sep(submodule[len - 1]))
-		len--;
-	if (!len)
-		return NULL;
-
-	if (submodule[len])
-		/* We need to strip off one or more trailing slashes */
-		submodule = to_free = xmemdupz(submodule, len);
-
-	refs = lookup_ref_store_map(&submodule_ref_stores, submodule);
-	if (refs)
-		goto done;
-
-	strbuf_addstr(&submodule_sb, submodule);
-	if (!is_nonbare_repository_dir(&submodule_sb))
-		goto done;
-
-	if (submodule_to_gitdir(&submodule_sb, submodule))
-		goto done;
-
-	/* assume that add_submodule_odb() has been called */
-	refs = ref_store_init(submodule_sb.buf,
-			      REF_STORE_READ | REF_STORE_ODB);
-	register_ref_store_map(&submodule_ref_stores, "submodule",
-			       refs, submodule);
-
-done:
-	strbuf_release(&submodule_sb);
-	free(to_free);
-
-	return refs;
-}
-
-struct ref_store *get_worktree_ref_store(const struct worktree *wt)
-{
-	struct ref_store *refs;
-	const char *id;
-
-	if (wt->is_current)
-		return get_main_ref_store(the_repository);
-
-	id = wt->id ? wt->id : "/";
-	refs = lookup_ref_store_map(&worktree_ref_stores, id);
-	if (refs)
-		return refs;
-
-	if (wt->id)
-		refs = ref_store_init(git_common_path("worktrees/%s", wt->id),
-				      REF_STORE_ALL_CAPS);
-	else
-		refs = ref_store_init(get_git_common_dir(),
-				      REF_STORE_ALL_CAPS);
-
-	if (refs)
-		register_ref_store_map(&worktree_ref_stores, "worktree",
-				       refs, id);
-	return refs;
-}
-
-void base_ref_store_init(struct ref_store *refs,
-			 const struct ref_storage_be *be)
-{
-	refs->be = be;
-}
-
-/* backend functions */
-int refs_pack_refs(struct ref_store *refs, unsigned int flags)
-{
-	return refs->be->pack_refs(refs, flags);
-}
-
-int refs_peel_ref(struct ref_store *refs, const char *refname,
-		  struct object_id *oid)
-{
-	int flag;
-	struct object_id base;
-
-	if (current_ref_iter && current_ref_iter->refname == refname) {
-		struct object_id peeled;
-
-		if (ref_iterator_peel(current_ref_iter, &peeled))
-			return -1;
-		oidcpy(oid, &peeled);
-		return 0;
-	}
-
-	if (refs_read_ref_full(refs, refname,
-			       RESOLVE_REF_READING, &base, &flag))
-		return -1;
-
-	return peel_object(&base, oid);
-}
-
-int peel_ref(const char *refname, struct object_id *oid)
-{
-	return refs_peel_ref(get_main_ref_store(the_repository), refname, oid);
-}
-
-int refs_create_symref(struct ref_store *refs,
-		       const char *ref_target,
-		       const char *refs_heads_master,
-		       const char *logmsg)
-{
-	char *msg;
-	int retval;
-
-	msg = normalize_reflog_message(logmsg);
-	retval = refs->be->create_symref(refs, ref_target, refs_heads_master,
-					 msg);
-	free(msg);
-	return retval;
-}
-
-int create_symref(const char *ref_target, const char *refs_heads_master,
-		  const char *logmsg)
-{
-	return refs_create_symref(get_main_ref_store(the_repository), ref_target,
-				  refs_heads_master, logmsg);
-}
-
-int ref_update_reject_duplicates(struct string_list *refnames,
-				 struct strbuf *err)
-{
-	size_t i, n = refnames->nr;
-
-	assert(err);
-
-	for (i = 1; i < n; i++) {
-		int cmp = strcmp(refnames->items[i - 1].string,
-				 refnames->items[i].string);
-
-		if (!cmp) {
-			strbuf_addf(err,
-				    _("multiple updates for ref '%s' not allowed"),
-				    refnames->items[i].string);
-			return 1;
-		} else if (cmp > 0) {
-			BUG("ref_update_reject_duplicates() received unsorted list");
-		}
-	}
-	return 0;
-}
-
-static int run_transaction_hook(struct ref_transaction *transaction,
-				const char *state)
-{
-	struct child_process proc = CHILD_PROCESS_INIT;
-	struct strbuf buf = STRBUF_INIT;
-	const char *hook;
-	int ret = 0, i;
-
-	hook = find_hook("reference-transaction");
-	if (!hook)
-		return ret;
-
-	strvec_pushl(&proc.args, hook, state, NULL);
-	proc.in = -1;
-	proc.stdout_to_stderr = 1;
-	proc.trace2_hook_name = "reference-transaction";
-
-	ret = start_command(&proc);
-	if (ret)
-		return ret;
-
-	sigchain_push(SIGPIPE, SIG_IGN);
-
-	for (i = 0; i < transaction->nr; i++) {
-		struct ref_update *update = transaction->updates[i];
-
-		strbuf_reset(&buf);
-		strbuf_addf(&buf, "%s %s %s\n",
-			    oid_to_hex(&update->old_oid),
-			    oid_to_hex(&update->new_oid),
-			    update->refname);
-
-		if (write_in_full(proc.in, buf.buf, buf.len) < 0) {
-			if (errno != EPIPE)
-				ret = -1;
-			break;
-		}
-	}
-
-	close(proc.in);
-	sigchain_pop(SIGPIPE);
-	strbuf_release(&buf);
-
-	ret |= finish_command(&proc);
-	return ret;
-}
-
-int ref_transaction_prepare(struct ref_transaction *transaction,
-			    struct strbuf *err)
-{
-	struct ref_store *refs = transaction->ref_store;
-	int ret;
-
-	switch (transaction->state) {
-	case REF_TRANSACTION_OPEN:
-		/* Good. */
-		break;
-	case REF_TRANSACTION_PREPARED:
-		BUG("prepare called twice on reference transaction");
-		break;
-	case REF_TRANSACTION_CLOSED:
-		BUG("prepare called on a closed reference transaction");
-		break;
-	default:
-		BUG("unexpected reference transaction state");
-		break;
-	}
-
-	if (getenv(GIT_QUARANTINE_ENVIRONMENT)) {
-		strbuf_addstr(err,
-			      _("ref updates forbidden inside quarantine environment"));
-		return -1;
-	}
-
-	ret = refs->be->transaction_prepare(refs, transaction, err);
-	if (ret)
-		return ret;
-
-	ret = run_transaction_hook(transaction, "prepared");
-	if (ret) {
-		ref_transaction_abort(transaction, err);
-		die(_("ref updates aborted by hook"));
-	}
-
-	return 0;
-}
-
-int ref_transaction_abort(struct ref_transaction *transaction,
-			  struct strbuf *err)
-{
-	struct ref_store *refs = transaction->ref_store;
-	int ret = 0;
-
-	switch (transaction->state) {
-	case REF_TRANSACTION_OPEN:
-		/* No need to abort explicitly. */
-		break;
-	case REF_TRANSACTION_PREPARED:
-		ret = refs->be->transaction_abort(refs, transaction, err);
-		break;
-	case REF_TRANSACTION_CLOSED:
-		BUG("abort called on a closed reference transaction");
-		break;
-	default:
-		BUG("unexpected reference transaction state");
-		break;
-	}
-
-	run_transaction_hook(transaction, "aborted");
-
-	ref_transaction_free(transaction);
-	return ret;
-}
-
-int ref_transaction_commit(struct ref_transaction *transaction,
-			   struct strbuf *err)
-{
-	struct ref_store *refs = transaction->ref_store;
-	int ret;
-
-	switch (transaction->state) {
-	case REF_TRANSACTION_OPEN:
-		/* Need to prepare first. */
-		ret = ref_transaction_prepare(transaction, err);
-		if (ret)
-			return ret;
-		break;
-	case REF_TRANSACTION_PREPARED:
-		/* Fall through to finish. */
-		break;
-	case REF_TRANSACTION_CLOSED:
-		BUG("commit called on a closed reference transaction");
-		break;
-	default:
-		BUG("unexpected reference transaction state");
-		break;
-	}
-
-	ret = refs->be->transaction_finish(refs, transaction, err);
-	if (!ret)
-		run_transaction_hook(transaction, "committed");
-	return ret;
-}
-
-int refs_verify_refname_available(struct ref_store *refs,
-				  const char *refname,
-				  const struct string_list *extras,
-				  const struct string_list *skip,
-				  struct strbuf *err)
-{
-	const char *slash;
-	const char *extra_refname;
-	struct strbuf dirname = STRBUF_INIT;
-	struct strbuf referent = STRBUF_INIT;
-	struct object_id oid;
-	unsigned int type;
-	struct ref_iterator *iter;
-	int ok;
-	int ret = -1;
-
-	/*
-	 * For the sake of comments in this function, suppose that
-	 * refname is "refs/foo/bar".
-	 */
-
-	assert(err);
-
-	strbuf_grow(&dirname, strlen(refname) + 1);
-	for (slash = strchr(refname, '/'); slash; slash = strchr(slash + 1, '/')) {
-		/* Expand dirname to the new prefix, not including the trailing slash: */
-		strbuf_add(&dirname, refname + dirname.len, slash - refname - dirname.len);
-
-		/*
-		 * We are still at a leading dir of the refname (e.g.,
-		 * "refs/foo"; if there is a reference with that name,
-		 * it is a conflict, *unless* it is in skip.
-		 */
-		if (skip && string_list_has_string(skip, dirname.buf))
-			continue;
-
-		if (!refs_read_raw_ref(refs, dirname.buf, &oid, &referent, &type)) {
-			strbuf_addf(err, _("'%s' exists; cannot create '%s'"),
-				    dirname.buf, refname);
-			goto cleanup;
-		}
-
-		if (extras && string_list_has_string(extras, dirname.buf)) {
-			strbuf_addf(err, _("cannot process '%s' and '%s' at the same time"),
-				    refname, dirname.buf);
-			goto cleanup;
-		}
-	}
-
-	/*
-	 * We are at the leaf of our refname (e.g., "refs/foo/bar").
-	 * There is no point in searching for a reference with that
-	 * name, because a refname isn't considered to conflict with
-	 * itself. But we still need to check for references whose
-	 * names are in the "refs/foo/bar/" namespace, because they
-	 * *do* conflict.
-	 */
-	strbuf_addstr(&dirname, refname + dirname.len);
-	strbuf_addch(&dirname, '/');
-
-	iter = refs_ref_iterator_begin(refs, dirname.buf, 0,
-				       DO_FOR_EACH_INCLUDE_BROKEN);
-	while ((ok = ref_iterator_advance(iter)) == ITER_OK) {
-		if (skip &&
-		    string_list_has_string(skip, iter->refname))
-			continue;
-
-		strbuf_addf(err, _("'%s' exists; cannot create '%s'"),
-			    iter->refname, refname);
-		ref_iterator_abort(iter);
-		goto cleanup;
-	}
-
-	if (ok != ITER_DONE)
-		BUG("error while iterating over references");
-
-	extra_refname = find_descendant_ref(dirname.buf, extras, skip);
-	if (extra_refname)
-		strbuf_addf(err, _("cannot process '%s' and '%s' at the same time"),
-			    refname, extra_refname);
-	else
-		ret = 0;
-
-cleanup:
-	strbuf_release(&referent);
-	strbuf_release(&dirname);
-	return ret;
-}
-
-int refs_for_each_reflog(struct ref_store *refs, each_ref_fn fn, void *cb_data)
-{
-	struct ref_iterator *iter;
-	struct do_for_each_ref_help hp = { fn, cb_data };
-
-	iter = refs->be->reflog_iterator_begin(refs);
-
-	return do_for_each_repo_ref_iterator(the_repository, iter,
-					     do_for_each_ref_helper, &hp);
-}
-
-int for_each_reflog(each_ref_fn fn, void *cb_data)
-{
-	return refs_for_each_reflog(get_main_ref_store(the_repository), fn, cb_data);
-}
-
-int refs_for_each_reflog_ent_reverse(struct ref_store *refs,
-				     const char *refname,
-				     each_reflog_ent_fn fn,
-				     void *cb_data)
-{
-	return refs->be->for_each_reflog_ent_reverse(refs, refname,
-						     fn, cb_data);
-}
-
-int for_each_reflog_ent_reverse(const char *refname, each_reflog_ent_fn fn,
-				void *cb_data)
-{
-	return refs_for_each_reflog_ent_reverse(get_main_ref_store(the_repository),
-						refname, fn, cb_data);
-}
-
-int refs_for_each_reflog_ent(struct ref_store *refs, const char *refname,
-			     each_reflog_ent_fn fn, void *cb_data)
-{
-	return refs->be->for_each_reflog_ent(refs, refname, fn, cb_data);
-}
-
-int for_each_reflog_ent(const char *refname, each_reflog_ent_fn fn,
-			void *cb_data)
-{
-	return refs_for_each_reflog_ent(get_main_ref_store(the_repository), refname,
-					fn, cb_data);
-}
-
-int refs_reflog_exists(struct ref_store *refs, const char *refname)
-{
-	return refs->be->reflog_exists(refs, refname);
-}
-
-int reflog_exists(const char *refname)
-{
-	return refs_reflog_exists(get_main_ref_store(the_repository), refname);
-}
-
-int refs_create_reflog(struct ref_store *refs, const char *refname,
-		       int force_create, struct strbuf *err)
-{
-	return refs->be->create_reflog(refs, refname, force_create, err);
-}
-
-int safe_create_reflog(const char *refname, int force_create,
-		       struct strbuf *err)
-{
-	return refs_create_reflog(get_main_ref_store(the_repository), refname,
-				  force_create, err);
-}
-
-int refs_delete_reflog(struct ref_store *refs, const char *refname)
-{
-	return refs->be->delete_reflog(refs, refname);
-}
-
-int delete_reflog(const char *refname)
-{
-	return refs_delete_reflog(get_main_ref_store(the_repository), refname);
-}
-
-int refs_reflog_expire(struct ref_store *refs,
-		       const char *refname, const struct object_id *oid,
-		       unsigned int flags,
-		       reflog_expiry_prepare_fn prepare_fn,
-		       reflog_expiry_should_prune_fn should_prune_fn,
-		       reflog_expiry_cleanup_fn cleanup_fn,
-		       void *policy_cb_data)
-{
-	return refs->be->reflog_expire(refs, refname, oid, flags,
-				       prepare_fn, should_prune_fn,
-				       cleanup_fn, policy_cb_data);
-}
-
-int reflog_expire(const char *refname, const struct object_id *oid,
-		  unsigned int flags,
-		  reflog_expiry_prepare_fn prepare_fn,
-		  reflog_expiry_should_prune_fn should_prune_fn,
-		  reflog_expiry_cleanup_fn cleanup_fn,
-		  void *policy_cb_data)
-{
-	return refs_reflog_expire(get_main_ref_store(the_repository),
-				  refname, oid, flags,
-				  prepare_fn, should_prune_fn,
-				  cleanup_fn, policy_cb_data);
-}
-
-int initial_ref_transaction_commit(struct ref_transaction *transaction,
-				   struct strbuf *err)
-{
-	struct ref_store *refs = transaction->ref_store;
-
-	return refs->be->initial_transaction_commit(refs, transaction, err);
-}
-
-int refs_delete_refs(struct ref_store *refs, const char *logmsg,
-		     struct string_list *refnames, unsigned int flags)
-{
-	char *msg;
-	int retval;
-
-	msg = normalize_reflog_message(logmsg);
-	retval = refs->be->delete_refs(refs, msg, refnames, flags);
-	free(msg);
-	return retval;
-}
-
-int delete_refs(const char *msg, struct string_list *refnames,
-		unsigned int flags)
-{
-	return refs_delete_refs(get_main_ref_store(the_repository), msg, refnames, flags);
-}
-
-int refs_rename_ref(struct ref_store *refs, const char *oldref,
-		    const char *newref, const char *logmsg)
-{
-	char *msg;
-	int retval;
-
-	msg = normalize_reflog_message(logmsg);
-	retval = refs->be->rename_ref(refs, oldref, newref, msg);
-	free(msg);
-	return retval;
-}
-
-int rename_ref(const char *oldref, const char *newref, const char *logmsg)
-{
-	return refs_rename_ref(get_main_ref_store(the_repository), oldref, newref, logmsg);
-}
-
-int refs_copy_existing_ref(struct ref_store *refs, const char *oldref,
-		    const char *newref, const char *logmsg)
-{
-	char *msg;
-	int retval;
-
-	msg = normalize_reflog_message(logmsg);
-	retval = refs->be->copy_ref(refs, oldref, newref, msg);
-	free(msg);
-	return retval;
-}
-
-int copy_existing_ref(const char *oldref, const char *newref, const char *logmsg)
-{
-	return refs_copy_existing_ref(get_main_ref_store(the_repository), oldref, newref, logmsg);
-}