repository.c 36 KB
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/*
schu committed
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 * Copyright (C) 2009-2012 the libgit2 contributors
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 *
Vicent Marti committed
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 * This file is part of libgit2, distributed under the GNU GPL v2 with
 * a Linking Exception. For full terms see the included COPYING file.
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 */
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#include <stdarg.h>
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#include <ctype.h>
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#include "git2/object.h"
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#include "common.h"
#include "repository.h"
#include "commit.h"
#include "tag.h"
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#include "blob.h"
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#include "fileops.h"
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#include "config.h"
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#include "refs.h"
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#include "filter.h"
#include "odb.h"
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#include "remote.h"
Edward Thomson committed
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#include "merge.h"
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#define GIT_FILE_CONTENT_PREFIX "gitdir:"
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#define GIT_BRANCH_MASTER "master"

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#define GIT_REPO_VERSION 0
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#define GIT_TEMPLATE_DIR "/usr/share/git-core/templates"

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static void drop_odb(git_repository *repo)
{
	if (repo->_odb != NULL) {
		GIT_REFCOUNT_OWN(repo->_odb, NULL);
		git_odb_free(repo->_odb);
		repo->_odb = NULL;
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	}
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}
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static void drop_config(git_repository *repo)
{
	if (repo->_config != NULL) {
		GIT_REFCOUNT_OWN(repo->_config, NULL);
		git_config_free(repo->_config);
		repo->_config = NULL;
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	}
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	git_repository__cvar_cache_clear(repo);
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}

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static void drop_index(git_repository *repo)
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{
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	if (repo->_index != NULL) {
		GIT_REFCOUNT_OWN(repo->_index, NULL);
		git_index_free(repo->_index);
		repo->_index = NULL;
	}
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}

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void git_repository_free(git_repository *repo)
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{
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	if (repo == NULL)
		return;
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	git_cache_free(&repo->objects);
	git_repository__refcache_free(&repo->references);
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	git_attr_cache_flush(repo);
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	git_submodule_config_free(repo);
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	git__free(repo->path_repository);
	git__free(repo->workdir);
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	drop_config(repo);
	drop_index(repo);
	drop_odb(repo);

	git__free(repo);
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}

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/*
 * Git repository open methods
 *
 * Open a repository object from its path
 */
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static bool valid_repository_path(git_buf *repository_path)
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{
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	/* Check OBJECTS_DIR first, since it will generate the longest path name */
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	if (git_path_contains_dir(repository_path, GIT_OBJECTS_DIR) == false)
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		return false;
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	/* Ensure HEAD file exists */
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	if (git_path_contains_file(repository_path, GIT_HEAD_FILE) == false)
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		return false;
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	if (git_path_contains_dir(repository_path, GIT_REFS_DIR)  == false)
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		return false;
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	return true;
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}

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static git_repository *repository_alloc(void)
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{
	git_repository *repo = git__malloc(sizeof(git_repository));
	if (!repo)
		return NULL;

	memset(repo, 0x0, sizeof(git_repository));

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	if (git_cache_init(&repo->objects, GIT_DEFAULT_CACHE_SIZE, &git_object__free) < 0) {
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		git__free(repo);
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		return NULL;
	}
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	/* set all the entries in the cvar cache to `unset` */
	git_repository__cvar_cache_clear(repo);

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	return repo;
}

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static int load_config_data(git_repository *repo)
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{
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	int is_bare;
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	git_config *config;
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	if (git_repository_config__weakptr(&config, repo) < 0)
		return -1;
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	/* Try to figure out if it's bare, default to non-bare if it's not set */
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	if (git_config_get_bool(&is_bare, config, "core.bare") < 0)
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		repo->is_bare = 0;
	else
		repo->is_bare = is_bare;
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	return 0;
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}
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static int load_workdir(git_repository *repo, git_buf *parent_path)
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{
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	int         error;
	git_config *config;
	const char *worktree;
	git_buf     worktree_buf = GIT_BUF_INIT;
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	if (repo->is_bare)
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		return 0;
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	if (git_repository_config__weakptr(&config, repo) < 0)
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		return -1;
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	error = git_config_get_string(&worktree, config, "core.worktree");
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	if (!error && worktree != NULL) {
		error = git_path_prettify_dir(
			&worktree_buf, worktree, repo->path_repository);
		if (error < 0)
			return error;
		repo->workdir = git_buf_detach(&worktree_buf);
	}
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	else if (error != GIT_ENOTFOUND)
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		return error;
	else {
		giterr_clear();

		if (parent_path && git_path_isdir(parent_path->ptr))
			repo->workdir = git_buf_detach(parent_path);
		else {
			git_path_dirname_r(&worktree_buf, repo->path_repository);
			git_path_to_dir(&worktree_buf);
			repo->workdir = git_buf_detach(&worktree_buf);
		}
	}

	GITERR_CHECK_ALLOC(repo->workdir);
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	return 0;
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}

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/*
 * This function returns furthest offset into path where a ceiling dir
 * is found, so we can stop processing the path at that point.
 *
 * Note: converting this to use git_bufs instead of GIT_PATH_MAX buffers on
 * the stack could remove directories name limits, but at the cost of doing
 * repeated malloc/frees inside the loop below, so let's not do it now.
 */
static int find_ceiling_dir_offset(
	const char *path,
	const char *ceiling_directories)
{
	char buf[GIT_PATH_MAX + 1];
	char buf2[GIT_PATH_MAX + 1];
	const char *ceil, *sep;
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	size_t len, max_len = 0, min_len;
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	assert(path);

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	min_len = (size_t)(git_path_root(path) + 1);
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	if (ceiling_directories == NULL || min_len == 0)
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		return (int)min_len;
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	for (sep = ceil = ceiling_directories; *sep; ceil = sep + 1) {
		for (sep = ceil; *sep && *sep != GIT_PATH_LIST_SEPARATOR; sep++);
		len = sep - ceil;

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		if (len == 0 || len >= sizeof(buf) || git_path_root(ceil) == -1)
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			continue;

		strncpy(buf, ceil, len);
		buf[len] = '\0';

		if (p_realpath(buf, buf2) == NULL)
			continue;

		len = strlen(buf2);
		if (len > 0 && buf2[len-1] == '/')
			buf[--len] = '\0';

		if (!strncmp(path, buf2, len) &&
			path[len] == '/' &&
			len > max_len)
		{
			max_len = len;
		}
	}

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	return (int)(max_len <= min_len ? min_len : max_len);
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}

/*
 * Read the contents of `file_path` and set `path_out` to the repo dir that
 * it points to.  Before calling, set `path_out` to the base directory that
 * should be used if the contents of `file_path` are a relative path.
 */
static int read_gitfile(git_buf *path_out, const char *file_path)
{
	int     error = 0;
	git_buf file = GIT_BUF_INIT;
	size_t  prefix_len = strlen(GIT_FILE_CONTENT_PREFIX);

	assert(path_out && file_path);

	if (git_futils_readbuffer(&file, file_path) < 0)
		return -1;

	git_buf_rtrim(&file);

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	if (git_buf_len(&file) <= prefix_len ||
		memcmp(git_buf_cstr(&file), GIT_FILE_CONTENT_PREFIX, prefix_len) != 0)
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	{
		giterr_set(GITERR_REPOSITORY, "The `.git` file at '%s' is malformed", file_path);
		error = -1;
	}
	else if ((error = git_path_dirname_r(path_out, file_path)) >= 0) {
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		const char *gitlink = git_buf_cstr(&file) + prefix_len;
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		while (*gitlink && git__isspace(*gitlink)) gitlink++;
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		error = git_path_prettify_dir(
			path_out, gitlink, git_buf_cstr(path_out));
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	}

	git_buf_free(&file);
	return error;
}

static int find_repo(
	git_buf *repo_path,
	git_buf *parent_path,
	const char *start_path,
	uint32_t flags,
	const char *ceiling_dirs)
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{
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	int error;
	git_buf path = GIT_BUF_INIT;
	struct stat st;
	dev_t initial_device = 0;
	bool try_with_dot_git = false;
	int ceiling_offset;

	git_buf_free(repo_path);

	if ((error = git_path_prettify_dir(&path, start_path, NULL)) < 0)
		return error;

	ceiling_offset = find_ceiling_dir_offset(path.ptr, ceiling_dirs);

	if ((error = git_buf_joinpath(&path, path.ptr, DOT_GIT)) < 0)
		return error;

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	while (!error && !git_buf_len(repo_path)) {
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		if (p_stat(path.ptr, &st) == 0) {
			/* check that we have not crossed device boundaries */
			if (initial_device == 0)
				initial_device = st.st_dev;
			else if (st.st_dev != initial_device &&
				(flags & GIT_REPOSITORY_OPEN_CROSS_FS) == 0)
				break;

			if (S_ISDIR(st.st_mode)) {
				if (valid_repository_path(&path)) {
					git_path_to_dir(&path);
					git_buf_set(repo_path, path.ptr, path.size);
					break;
				}
			}
			else if (S_ISREG(st.st_mode)) {
				git_buf repo_link = GIT_BUF_INIT;

				if (!(error = read_gitfile(&repo_link, path.ptr))) {
					if (valid_repository_path(&repo_link))
						git_buf_swap(repo_path, &repo_link);
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					git_buf_free(&repo_link);
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					break;
				}
				git_buf_free(&repo_link);
			}
		}

		/* move up one directory level */
		if (git_path_dirname_r(&path, path.ptr) < 0) {
			error = -1;
			break;
		}

		if (try_with_dot_git) {
			/* if we tried original dir with and without .git AND either hit
			 * directory ceiling or NO_SEARCH was requested, then be done.
			 */
			if (path.ptr[ceiling_offset] == '\0' ||
				(flags & GIT_REPOSITORY_OPEN_NO_SEARCH) != 0)
				break;
			/* otherwise look first for .git item */
			error = git_buf_joinpath(&path, path.ptr, DOT_GIT);
		}
		try_with_dot_git = !try_with_dot_git;
	}

	if (!error && parent_path != NULL) {
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		if (!git_buf_len(repo_path))
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			git_buf_clear(parent_path);
		else {
			git_path_dirname_r(parent_path, path.ptr);
			git_path_to_dir(parent_path);
		}
		if (git_buf_oom(parent_path))
			return -1;
	}

	git_buf_free(&path);

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	if (!git_buf_len(repo_path) && !error) {
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		giterr_set(GITERR_REPOSITORY,
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			"Could not find repository from '%s'", start_path);
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		error = GIT_ENOTFOUND;
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	}
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	return error;
}

int git_repository_open_ext(
	git_repository **repo_ptr,
	const char *start_path,
	uint32_t flags,
	const char *ceiling_dirs)
{
	int error;
	git_buf path = GIT_BUF_INIT, parent = GIT_BUF_INIT;
	git_repository *repo;

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	if (repo_ptr)
		*repo_ptr = NULL;
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	error = find_repo(&path, &parent, start_path, flags, ceiling_dirs);
	if (error < 0 || !repo_ptr)
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		return error;

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	repo = repository_alloc();
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	GITERR_CHECK_ALLOC(repo);
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	repo->path_repository = git_buf_detach(&path);
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	GITERR_CHECK_ALLOC(repo->path_repository);
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	if ((error = load_config_data(repo)) < 0 ||
		(error = load_workdir(repo, &parent)) < 0)
	{
		git_repository_free(repo);
		return error;
	}
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	git_buf_free(&parent);
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	*repo_ptr = repo;
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	return 0;
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}
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int git_repository_open(git_repository **repo_out, const char *path)
{
	return git_repository_open_ext(
		repo_out, path, GIT_REPOSITORY_OPEN_NO_SEARCH, NULL);
}

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int git_repository_wrap_odb(git_repository **repo_out, git_odb *odb)
{
	git_repository *repo;

	repo = repository_alloc();
	GITERR_CHECK_ALLOC(repo);

	git_repository_set_odb(repo, odb);
	*repo_out = repo;

	return 0;
}

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int git_repository_discover(
	char *repository_path,
	size_t size,
	const char *start_path,
	int across_fs,
	const char *ceiling_dirs)
{
	git_buf path = GIT_BUF_INIT;
	uint32_t flags = across_fs ? GIT_REPOSITORY_OPEN_CROSS_FS : 0;
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	int error;
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	assert(start_path && repository_path && size > 0);

	*repository_path = '\0';

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	if ((error = find_repo(&path, NULL, start_path, flags, ceiling_dirs)) < 0)
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		return error != GIT_ENOTFOUND ? -1 : error;
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	if (size < (size_t)(path.size + 1)) {
		giterr_set(GITERR_REPOSITORY,
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			"The given buffer is too small to store the discovered path");
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		git_buf_free(&path);
		return -1;
	}

	/* success: we discovered a repository */
	git_buf_copy_cstr(repository_path, size, &path);
	git_buf_free(&path);
	return 0;
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}

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static int load_config(
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	git_config **out,
	git_repository *repo,
	const char *global_config_path,
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	const char *xdg_config_path,
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	const char *system_config_path)
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{
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	git_buf config_path = GIT_BUF_INIT;
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	git_config *cfg = NULL;
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	assert(repo && out);
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	if (git_config_new(&cfg) < 0)
		return -1;
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	if (git_buf_joinpath(
		&config_path, repo->path_repository, GIT_CONFIG_FILENAME_INREPO) < 0)
		goto on_error;
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	if (git_config_add_file_ondisk(cfg, config_path.ptr, GIT_CONFIG_LEVEL_LOCAL, 0) < 0)
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		goto on_error;

	git_buf_free(&config_path);
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	if (global_config_path != NULL) {
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		if (git_config_add_file_ondisk(cfg, global_config_path, GIT_CONFIG_LEVEL_GLOBAL, 0) < 0)
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			goto on_error;
	}

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	if (xdg_config_path != NULL) {
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		if (git_config_add_file_ondisk(cfg, xdg_config_path, GIT_CONFIG_LEVEL_XDG, 0) < 0)
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			goto on_error;
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	}

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	if (system_config_path != NULL) {
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		if (git_config_add_file_ondisk(cfg, system_config_path, GIT_CONFIG_LEVEL_SYSTEM, 0) < 0)
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			goto on_error;
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	}

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	*out = cfg;
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	return 0;
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on_error:
	git_buf_free(&config_path);
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	git_config_free(cfg);
	*out = NULL;
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	return -1;
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}

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int git_repository_config__weakptr(git_config **out, git_repository *repo)
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{
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	if (repo->_config == NULL) {
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		git_buf global_buf = GIT_BUF_INIT, xdg_buf = GIT_BUF_INIT, system_buf = GIT_BUF_INIT;
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		int res;
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		const char *global_config_path = NULL;
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		const char *xdg_config_path = NULL;
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		const char *system_config_path = NULL;
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		if (git_config_find_global_r(&global_buf) == 0)
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			global_config_path = global_buf.ptr;
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		if (git_config_find_xdg_r(&xdg_buf) == 0)
			xdg_config_path = xdg_buf.ptr;
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		if (git_config_find_system_r(&system_buf) == 0)
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			system_config_path = system_buf.ptr;
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		res = load_config(&repo->_config, repo, global_config_path, xdg_config_path, system_config_path);
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		git_buf_free(&global_buf);
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		git_buf_free(&xdg_buf);
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		git_buf_free(&system_buf);

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		if (res < 0)
			return -1;
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		GIT_REFCOUNT_OWN(repo->_config, repo);
	}
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	*out = repo->_config;
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	return 0;
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}

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int git_repository_config(git_config **out, git_repository *repo)
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{
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	if (git_repository_config__weakptr(out, repo) < 0)
		return -1;
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	GIT_REFCOUNT_INC(*out);
	return 0;
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}

void git_repository_set_config(git_repository *repo, git_config *config)
{
	assert(repo && config);

	drop_config(repo);

	repo->_config = config;
	GIT_REFCOUNT_OWN(repo->_config, repo);
}

int git_repository_odb__weakptr(git_odb **out, git_repository *repo)
{
	assert(repo && out);

	if (repo->_odb == NULL) {
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		git_buf odb_path = GIT_BUF_INIT;
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		int res;
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		if (git_buf_joinpath(&odb_path, repo->path_repository, GIT_OBJECTS_DIR) < 0)
			return -1;
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		res = git_odb_open(&repo->_odb, odb_path.ptr);
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		git_buf_free(&odb_path); /* done with path */
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		if (res < 0)
			return -1;
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		GIT_REFCOUNT_OWN(repo->_odb, repo);
	}
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	*out = repo->_odb;
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	return 0;
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}

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int git_repository_odb(git_odb **out, git_repository *repo)
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{
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	if (git_repository_odb__weakptr(out, repo) < 0)
		return -1;
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	GIT_REFCOUNT_INC(*out);
	return 0;
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}
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void git_repository_set_odb(git_repository *repo, git_odb *odb)
{
	assert(repo && odb);
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	drop_odb(repo);
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	repo->_odb = odb;
	GIT_REFCOUNT_OWN(repo->_odb, repo);
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	GIT_REFCOUNT_INC(odb);
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}

int git_repository_index__weakptr(git_index **out, git_repository *repo)
{
	assert(out && repo);

	if (repo->_index == NULL) {
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		int res;
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		git_buf index_path = GIT_BUF_INIT;
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		if (git_buf_joinpath(&index_path, repo->path_repository, GIT_INDEX_FILE) < 0)
			return -1;
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		res = git_index_open(&repo->_index, index_path.ptr);
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		git_buf_free(&index_path); /* done with path */
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		if (res < 0)
			return -1;
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		GIT_REFCOUNT_OWN(repo->_index, repo);
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		if (git_index_set_caps(repo->_index, GIT_INDEXCAP_FROM_OWNER) < 0)
			return -1;
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	}

	*out = repo->_index;
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	return 0;
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}
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int git_repository_index(git_index **out, git_repository *repo)
{
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	if (git_repository_index__weakptr(out, repo) < 0)
		return -1;
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	GIT_REFCOUNT_INC(*out);
	return 0;
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}

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void git_repository_set_index(git_repository *repo, git_index *index)
{
	assert(repo && index);

	drop_index(repo);

	repo->_index = index;
	GIT_REFCOUNT_OWN(repo->_index, repo);
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	GIT_REFCOUNT_INC(index);
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}

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static int check_repositoryformatversion(git_config *config)
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{
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	int version;
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	if (git_config_get_int32(&version, config, "core.repositoryformatversion") < 0)
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		return -1;
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	if (GIT_REPO_VERSION < version) {
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		giterr_set(GITERR_REPOSITORY,
			"Unsupported repository version %d. Only versions up to %d are supported.",
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			version, GIT_REPO_VERSION);
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		return -1;
	}
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	return 0;
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}

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static int repo_init_create_head(const char *git_dir, const char *ref_name)
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{
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	git_buf ref_path = GIT_BUF_INIT;
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	git_filebuf ref = GIT_FILEBUF_INIT;
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	const char *fmt;
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	if (git_buf_joinpath(&ref_path, git_dir, GIT_HEAD_FILE) < 0 ||
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		git_filebuf_open(&ref, ref_path.ptr, 0) < 0)
		goto fail;

	if (!ref_name)
		ref_name = GIT_BRANCH_MASTER;

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	if (git__prefixcmp(ref_name, GIT_REFS_DIR) == 0)
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		fmt = "ref: %s\n";
	else
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		fmt = "ref: " GIT_REFS_HEADS_DIR "%s\n";
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	if (git_filebuf_printf(&ref, fmt, ref_name) < 0 ||
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		git_filebuf_commit(&ref, GIT_REFS_FILE_MODE) < 0)
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		goto fail;
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	git_buf_free(&ref_path);
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	return 0;
681 682 683 684 685

fail:
	git_buf_free(&ref_path);
	git_filebuf_cleanup(&ref);
	return -1;
686 687
}

688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705
static bool is_chmod_supported(const char *file_path)
{
	struct stat st1, st2;
	static int _is_supported = -1;

	if (_is_supported > -1)
		return _is_supported;

	if (p_stat(file_path, &st1) < 0)
		return false;

	if (p_chmod(file_path, st1.st_mode ^ S_IXUSR) < 0)
		return false;

	if (p_stat(file_path, &st2) < 0)
		return false;

	_is_supported = (st1.st_mode != st2.st_mode);
706

707 708 709
	return _is_supported;
}

710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727
static bool is_filesystem_case_insensitive(const char *gitdir_path)
{
	git_buf path = GIT_BUF_INIT;
	static int _is_insensitive = -1;

	if (_is_insensitive > -1)
		return _is_insensitive;

	if (git_buf_joinpath(&path, gitdir_path, "CoNfIg") < 0)
		goto cleanup;

	_is_insensitive = git_path_exists(git_buf_cstr(&path));

cleanup:
	git_buf_free(&path);
	return _is_insensitive;
}

728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752
static bool are_symlinks_supported(const char *wd_path)
{
	git_buf path = GIT_BUF_INIT;
	int fd;
	struct stat st;
	static int _symlinks_supported = -1;

	if (_symlinks_supported > -1)
		return _symlinks_supported;

	if ((fd = git_futils_mktmp(&path, wd_path)) < 0 ||
		p_close(fd) < 0 ||
		p_unlink(path.ptr) < 0 ||
		p_symlink("testing", path.ptr) < 0 ||
		p_lstat(path.ptr, &st) < 0)
		_symlinks_supported = false;
	else
		_symlinks_supported = (S_ISLNK(st.st_mode) != 0);

	(void)p_unlink(path.ptr);
	git_buf_free(&path);

	return _symlinks_supported;
}

753
static int repo_init_config(
754 755 756
	const char *repo_dir,
	const char *work_dir,
	git_repository_init_options *opts)
757
{
758
	int error = 0;
759 760
	git_buf cfg_path = GIT_BUF_INIT;
	git_config *config = NULL;
761

762 763 764
#define SET_REPO_CONFIG(TYPE, NAME, VAL) do {\
	if ((error = git_config_set_##TYPE(config, NAME, VAL)) < 0) \
		goto cleanup; } while (0)
765

766
	if (git_buf_joinpath(&cfg_path, repo_dir, GIT_CONFIG_FILENAME_INREPO) < 0)
767
		return -1;
768

769
	if (git_config_open_ondisk(&config, git_buf_cstr(&cfg_path)) < 0) {
770 771 772
		git_buf_free(&cfg_path);
		return -1;
	}
773

774
	if ((opts->flags & GIT_REPOSITORY_INIT__IS_REINIT) != 0 &&
775 776
		(error = check_repositoryformatversion(config)) < 0)
		goto cleanup;
777

778 779 780 781 782 783 784
	SET_REPO_CONFIG(
		bool, "core.bare", (opts->flags & GIT_REPOSITORY_INIT_BARE) != 0);
	SET_REPO_CONFIG(
		int32, "core.repositoryformatversion", GIT_REPO_VERSION);
	SET_REPO_CONFIG(
		bool, "core.filemode", is_chmod_supported(git_buf_cstr(&cfg_path)));

785
	if (!(opts->flags & GIT_REPOSITORY_INIT_BARE)) {
786 787
		SET_REPO_CONFIG(bool, "core.logallrefupdates", true);

788 789 790 791 792 793 794
		if (!are_symlinks_supported(work_dir))
			SET_REPO_CONFIG(bool, "core.symlinks", false);

		if (!(opts->flags & GIT_REPOSITORY_INIT__NATURAL_WD)) {
			SET_REPO_CONFIG(string, "core.worktree", work_dir);
		}
		else if ((opts->flags & GIT_REPOSITORY_INIT__IS_REINIT) != 0) {
795 796
			if (git_config_delete(config, "core.worktree") < 0)
				giterr_clear();
797 798 799 800 801 802
		}
	} else {
		if (!are_symlinks_supported(repo_dir))
			SET_REPO_CONFIG(bool, "core.symlinks", false);
	}

803
	if (!(opts->flags & GIT_REPOSITORY_INIT__IS_REINIT) &&
804
		is_filesystem_case_insensitive(repo_dir))
805
		SET_REPO_CONFIG(bool, "core.ignorecase", true);
806

807
	if (opts->mode == GIT_REPOSITORY_INIT_SHARED_GROUP) {
808 809
		SET_REPO_CONFIG(int32, "core.sharedrepository", 1);
		SET_REPO_CONFIG(bool, "receive.denyNonFastforwards", true);
810 811
	}
	else if (opts->mode == GIT_REPOSITORY_INIT_SHARED_ALL) {
812 813 814
		SET_REPO_CONFIG(int32, "core.sharedrepository", 2);
		SET_REPO_CONFIG(bool, "receive.denyNonFastforwards", true);
	}
815

816
cleanup:
817
	git_buf_free(&cfg_path);
818
	git_config_free(config);
819

820
	return error;
821
}
822

823
static int repo_write_template(
824 825 826 827
	const char *git_dir,
	bool allow_overwrite,
	const char *file,
	mode_t mode,
828
	bool hidden,
829
	const char *content)
830 831
{
	git_buf path = GIT_BUF_INIT;
832
	int fd, error = 0, flags;
833 834 835 836

	if (git_buf_joinpath(&path, git_dir, file) < 0)
		return -1;

837 838 839 840 841 842
	if (allow_overwrite)
		flags = O_WRONLY | O_CREAT | O_TRUNC;
	else
		flags = O_WRONLY | O_CREAT | O_EXCL;

	fd = p_open(git_buf_cstr(&path), flags, mode);
843

844 845
	if (fd >= 0) {
		error = p_write(fd, content, strlen(content));
846

847 848 849 850
		p_close(fd);
	}
	else if (errno != EEXIST)
		error = fd;
851

852 853 854 855 856 857 858 859 860
#ifdef GIT_WIN32
	if (!error && hidden) {
		if (p_hide_directory__w32(path.ptr) < 0)
			error = -1;
	}
#else
	GIT_UNUSED(hidden);
#endif

861
	git_buf_free(&path);
862 863 864 865 866 867

	if (error)
		giterr_set(GITERR_OS,
			"Failed to initialize repository with template '%s'", file);

	return error;
868 869
}

870 871
static int repo_write_gitlink(
	const char *in_dir, const char *to_repo)
872
{
873 874 875 876 877 878 879
	int error;
	git_buf buf = GIT_BUF_INIT;
	struct stat st;

	git_path_dirname_r(&buf, to_repo);
	git_path_to_dir(&buf);
	if (git_buf_oom(&buf))
880
		return -1;
881

882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911
	/* don't write gitlink to natural workdir */
	if (git__suffixcmp(to_repo, "/" DOT_GIT "/") == 0 &&
		strcmp(in_dir, buf.ptr) == 0)
	{
		error = GIT_PASSTHROUGH;
		goto cleanup;
	}

	if ((error = git_buf_joinpath(&buf, in_dir, DOT_GIT)) < 0)
		goto cleanup;

	if (!p_stat(buf.ptr, &st) && !S_ISREG(st.st_mode)) {
		giterr_set(GITERR_REPOSITORY,
			"Cannot overwrite gitlink file into path '%s'", in_dir);
		error = GIT_EEXISTS;
		goto cleanup;
	}

	git_buf_clear(&buf);

	error = git_buf_printf(&buf, "%s %s", GIT_FILE_CONTENT_PREFIX, to_repo);

	if (!error)
		error = repo_write_template(in_dir, true, DOT_GIT, 0644, true, buf.ptr);

cleanup:
	git_buf_free(&buf);
	return error;
}

912 913 914 915 916 917 918 919 920 921 922
static mode_t pick_dir_mode(git_repository_init_options *opts)
{
	if (opts->mode == GIT_REPOSITORY_INIT_SHARED_UMASK)
		return 0755;
	if (opts->mode == GIT_REPOSITORY_INIT_SHARED_GROUP)
		return (0775 | S_ISGID);
	if (opts->mode == GIT_REPOSITORY_INIT_SHARED_ALL)
		return (0777 | S_ISGID);
	return opts->mode;
}

923 924 925 926 927 928 929
#include "repo_template.h"

static int repo_init_structure(
	const char *repo_dir,
	const char *work_dir,
	git_repository_init_options *opts)
{
930
	int error = 0;
931
	repo_template_item *tpl;
932 933 934
	bool external_tpl =
		((opts->flags & GIT_REPOSITORY_INIT_EXTERNAL_TEMPLATE) != 0);
	mode_t dmode = pick_dir_mode(opts);
935 936

	/* Hide the ".git" directory */
937
#ifdef GIT_WIN32
938
	if ((opts->flags & GIT_REPOSITORY_INIT__HAS_DOTGIT) != 0) {
939
		if (p_hide_directory__w32(repo_dir) < 0) {
940 941 942 943
			giterr_set(GITERR_REPOSITORY,
				"Failed to mark Git repository folder as hidden");
			return -1;
		}
944
	}
945 946 947 948 949 950
#endif

	/* Create the .git gitlink if appropriate */
	if ((opts->flags & GIT_REPOSITORY_INIT_BARE) == 0 &&
		(opts->flags & GIT_REPOSITORY_INIT__NATURAL_WD) == 0)
	{
951
		if (repo_write_gitlink(work_dir, repo_dir) < 0)
952
			return -1;
953
	}
954

955 956 957 958
	/* Copy external template if requested */
	if (external_tpl) {
		git_config *cfg;
		const char *tdir;
959

960 961
		if (opts->template_path)
			tdir = opts->template_path;
962
		else if ((error = git_config_open_default(&cfg)) < 0)
963 964 965
			return error;
		else {
			error = git_config_get_string(&tdir, cfg, "init.templatedir");
966

967
			git_config_free(cfg);
968

969 970 971 972 973
			if (error && error != GIT_ENOTFOUND)
				return error;

			giterr_clear();
			tdir = GIT_TEMPLATE_DIR;
974
		}
975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997

		error = git_futils_cp_r(tdir, repo_dir,
			GIT_CPDIR_COPY_SYMLINKS | GIT_CPDIR_CHMOD, dmode);

		if (error < 0) {
			if (strcmp(tdir, GIT_TEMPLATE_DIR) != 0)
				return error;

			/* if template was default, ignore error and use internal */
			giterr_clear();
			external_tpl = false;
		}
	}

	/* Copy internal template
	 * - always ensure existence of dirs
	 * - only create files if no external template was specified
	 */
	for (tpl = repo_template; !error && tpl->path; ++tpl) {
		if (!tpl->content)
			error = git_futils_mkdir(
				tpl->path, repo_dir, dmode, GIT_MKDIR_PATH | GIT_MKDIR_CHMOD);
		else if (!external_tpl) {
998 999 1000 1001 1002
			const char *content = tpl->content;

			if (opts->description && strcmp(tpl->path, GIT_DESC_FILE) == 0)
				content = opts->description;

1003 1004
			error = repo_write_template(
				repo_dir, false, tpl->path, tpl->mode, false, content);
1005
		}
1006 1007
	}

1008
	return error;
1009 1010
}

1011 1012 1013 1014 1015
static int repo_init_directories(
	git_buf *repo_path,
	git_buf *wd_path,
	const char *given_repo,
	git_repository_init_options *opts)
1016
{
1017 1018
	int error = 0;
	bool add_dotgit, has_dotgit, natural_wd;
1019
	mode_t dirmode;
1020

1021
	/* set up repo path */
1022

1023 1024 1025 1026 1027
	add_dotgit =
		(opts->flags & GIT_REPOSITORY_INIT_NO_DOTGIT_DIR) == 0 &&
		(opts->flags & GIT_REPOSITORY_INIT_BARE) == 0 &&
		git__suffixcmp(given_repo, "/" DOT_GIT) != 0 &&
		git__suffixcmp(given_repo, "/" GIT_DIR) != 0;
1028

1029 1030
	if (git_buf_joinpath(repo_path, given_repo, add_dotgit ? GIT_DIR : "") < 0)
		return -1;
1031

1032 1033 1034 1035 1036 1037 1038 1039
	has_dotgit = (git__suffixcmp(repo_path->ptr, "/" GIT_DIR) == 0);
	if (has_dotgit)
		opts->flags |= GIT_REPOSITORY_INIT__HAS_DOTGIT;

	/* set up workdir path */

	if ((opts->flags & GIT_REPOSITORY_INIT_BARE) == 0) {
		if (opts->workdir_path) {
1040 1041 1042
			if (git_path_join_unrooted(
					wd_path, opts->workdir_path, repo_path->ptr, NULL) < 0)
				return -1;
1043 1044 1045 1046 1047 1048 1049 1050
		} else if (has_dotgit) {
			if (git_path_dirname_r(wd_path, repo_path->ptr) < 0)
				return -1;
		} else {
			giterr_set(GITERR_REPOSITORY, "Cannot pick working directory"
				" for non-bare repository that isn't a '.git' directory");
			return -1;
		}
1051

1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067
		if (git_path_to_dir(wd_path) < 0)
			return -1;
	} else {
		git_buf_clear(wd_path);
	}

	natural_wd =
		has_dotgit &&
		wd_path->size > 0 &&
		wd_path->size + strlen(GIT_DIR) == repo_path->size &&
		memcmp(repo_path->ptr, wd_path->ptr, wd_path->size) == 0;
	if (natural_wd)
		opts->flags |= GIT_REPOSITORY_INIT__NATURAL_WD;

	/* create directories as needed / requested */

1068
	dirmode = pick_dir_mode(opts);
1069

1070 1071 1072 1073 1074
	if ((opts->flags & GIT_REPOSITORY_INIT_MKDIR) != 0 && has_dotgit) {
		git_buf p = GIT_BUF_INIT;
		if ((error = git_path_dirname_r(&p, repo_path->ptr)) >= 0)
			error = git_futils_mkdir(p.ptr, NULL, dirmode, 0);
		git_buf_free(&p);
1075 1076
	}

1077 1078 1079 1080 1081 1082 1083 1084
	if ((opts->flags & GIT_REPOSITORY_INIT_MKDIR) != 0 ||
		(opts->flags & GIT_REPOSITORY_INIT_MKPATH) != 0 ||
		has_dotgit)
	{
		uint32_t mkflag = GIT_MKDIR_CHMOD;
		if ((opts->flags & GIT_REPOSITORY_INIT_MKPATH) != 0)
			mkflag |= GIT_MKDIR_PATH;
		error = git_futils_mkdir(repo_path->ptr, NULL, dirmode, mkflag);
1085
	}
1086 1087 1088 1089 1090 1091 1092

	if (wd_path->size > 0 &&
		!natural_wd &&
		((opts->flags & GIT_REPOSITORY_INIT_MKDIR) != 0 ||
		 (opts->flags & GIT_REPOSITORY_INIT_MKPATH) != 0))
		error = git_futils_mkdir(wd_path->ptr, NULL, dirmode & ~S_ISGID,
			(opts->flags & GIT_REPOSITORY_INIT_MKPATH) ? GIT_MKDIR_PATH : 0);
1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110

	/* prettify both directories now that they are created */

	if (!error) {
		error = git_path_prettify_dir(repo_path, repo_path->ptr, NULL);

		if (!error && wd_path->size > 0)
			error = git_path_prettify_dir(wd_path, wd_path->ptr, NULL);
	}

	return error;
}

static int repo_init_create_origin(git_repository *repo, const char *url)
{
	int error;
	git_remote *remote;

1111
	if (!(error = git_remote_add(&remote, repo, GIT_REMOTE_ORIGIN, url))) {
1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143
		error = git_remote_save(remote);
		git_remote_free(remote);
	}

	return error;
}

int git_repository_init(
	git_repository **repo_out, const char *path, unsigned is_bare)
{
	git_repository_init_options opts;

	memset(&opts, 0, sizeof(opts));
	opts.flags = GIT_REPOSITORY_INIT_MKPATH; /* don't love this default */
	if (is_bare)
		opts.flags |= GIT_REPOSITORY_INIT_BARE;

	return git_repository_init_ext(repo_out, path, &opts);
}

int git_repository_init_ext(
	git_repository **repo_out,
	const char *given_repo,
	git_repository_init_options *opts)
{
	int error;
	git_buf repo_path = GIT_BUF_INIT, wd_path = GIT_BUF_INIT;

	assert(repo_out && given_repo && opts);

	error = repo_init_directories(&repo_path, &wd_path, given_repo, opts);
	if (error < 0)
1144
		goto cleanup;
1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156

	if (valid_repository_path(&repo_path)) {

		if ((opts->flags & GIT_REPOSITORY_INIT_NO_REINIT) != 0) {
			giterr_set(GITERR_REPOSITORY,
				"Attempt to reinitialize '%s'", given_repo);
			error = GIT_EEXISTS;
			goto cleanup;
		}

		opts->flags |= GIT_REPOSITORY_INIT__IS_REINIT;

1157 1158
		error = repo_init_config(
			git_buf_cstr(&repo_path), git_buf_cstr(&wd_path), opts);
1159 1160 1161 1162 1163 1164

		/* TODO: reinitialize the templates */
	}
	else {
		if (!(error = repo_init_structure(
				git_buf_cstr(&repo_path), git_buf_cstr(&wd_path), opts)) &&
1165 1166
			!(error = repo_init_config(
				git_buf_cstr(&repo_path), git_buf_cstr(&wd_path), opts)))
1167 1168
			error = repo_init_create_head(
				git_buf_cstr(&repo_path), opts->initial_head);
1169
	}
1170 1171 1172 1173
	if (error < 0)
		goto cleanup;

	error = git_repository_open(repo_out, git_buf_cstr(&repo_path));
1174

1175 1176
	if (!error && opts->origin_url)
		error = repo_init_create_origin(*repo_out, opts->origin_url);
1177 1178

cleanup:
1179 1180 1181 1182
	git_buf_free(&repo_path);
	git_buf_free(&wd_path);

	return error;
1183
}
1184

1185
int git_repository_head_detached(git_repository *repo)
1186 1187
{
	git_reference *ref;
1188
	git_odb *odb = NULL;
1189
	int exists;
1190

1191 1192
	if (git_repository_odb__weakptr(&odb, repo) < 0)
		return -1;
1193

1194 1195
	if (git_reference_lookup(&ref, repo, GIT_HEAD_FILE) < 0)
		return -1;
1196

1197 1198
	if (git_reference_type(ref) == GIT_REF_SYMBOLIC) {
		git_reference_free(ref);
1199
		return 0;
1200
	}
1201

1202
	exists = git_odb_exists(odb, git_reference_oid(ref));
1203 1204

	git_reference_free(ref);
1205
	return exists;
1206 1207
}

1208
int git_repository_head(git_reference **head_out, git_repository *repo)
1209
{
1210 1211 1212 1213 1214
	int error;

	error = git_reference_lookup_resolved(head_out, repo, GIT_HEAD_FILE, -1);

	return error == GIT_ENOTFOUND ? GIT_EORPHANEDHEAD : error;
1215 1216 1217 1218
}

int git_repository_head_orphan(git_repository *repo)
{
1219
	git_reference *ref = NULL;
1220 1221 1222
	int error;

	error = git_repository_head(&ref, repo);
1223
	git_reference_free(ref);
1224

1225
	if (error == GIT_EORPHANEDHEAD)
1226
		return 1;
1227

1228 1229 1230 1231
	if (error < 0)
		return -1;

	return 0;
1232
}
1233

1234 1235
int git_repository_is_empty(git_repository *repo)
{
1236
	git_reference *head = NULL, *branch = NULL;
1237 1238
	int error;

1239
	if (git_reference_lookup(&head, repo, GIT_HEAD_FILE) < 0)
1240
		return -1;
1241

1242 1243
	if (git_reference_type(head) != GIT_REF_SYMBOLIC) {
		git_reference_free(head);
1244
		return 0;
1245
	}
1246

1247
	if (strcmp(git_reference_target(head), GIT_REFS_HEADS_DIR "master") != 0) {
1248
		git_reference_free(head);
1249
		return 0;
1250
	}
1251

1252
	error = git_reference_resolve(&branch, head);
1253 1254 1255 1256

	git_reference_free(head);
	git_reference_free(branch);

1257
	if (error == GIT_ENOTFOUND)
1258 1259 1260 1261 1262 1263
		return 1;

	if (error < 0)
		return -1;

	return 0;
1264 1265
}

1266
const char *git_repository_path(git_repository *repo)
1267 1268
{
	assert(repo);
1269 1270
	return repo->path_repository;
}
1271

1272 1273 1274
const char *git_repository_workdir(git_repository *repo)
{
	assert(repo);
1275

1276 1277
	if (repo->is_bare)
		return NULL;
1278

1279 1280
	return repo->workdir;
}
1281

1282 1283
int git_repository_set_workdir(
	git_repository *repo, const char *workdir, int update_gitlink)
1284
{
1285
	int error = 0;
1286 1287
	git_buf path = GIT_BUF_INIT;

1288
	assert(repo && workdir);
1289

1290 1291
	if (git_path_prettify_dir(&path, workdir, NULL) < 0)
		return -1;
1292

1293 1294
	if (repo->workdir && strcmp(repo->workdir, path.ptr) == 0)
		return 0;
1295

1296 1297 1298 1299 1300 1301
	if (update_gitlink) {
		git_config *config;

		if (git_repository_config__weakptr(&config, repo) < 0)
			return -1;

1302
		error = repo_write_gitlink(path.ptr, git_repository_path(repo));
1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323

		/* passthrough error means gitlink is unnecessary */
		if (error == GIT_PASSTHROUGH)
			error = git_config_delete(config, "core.worktree");
		else if (!error)
			error = git_config_set_string(config, "core.worktree", path.ptr);

		if (!error)
			error = git_config_set_bool(config, "core.bare", false);
	}

	if (!error) {
		char *old_workdir = repo->workdir;

		repo->workdir = git_buf_detach(&path);
		repo->is_bare = 0;

		git__free(old_workdir);
	}

	return error;
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}
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int git_repository_is_bare(git_repository *repo)
{
	assert(repo);
	return repo->is_bare;
}
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int git_repository_head_tree(git_tree **tree, git_repository *repo)
{
	git_oid head_oid;
	git_object *obj = NULL;

	if (git_reference_name_to_oid(&head_oid, repo, GIT_HEAD_FILE) < 0) {
		/* cannot resolve HEAD - probably brand new repo */
		giterr_clear();
		*tree = NULL;
		return 0;
	}

	if (git_object_lookup(&obj, repo, &head_oid, GIT_OBJ_ANY) < 0 ||
		git_object__resolve_to_type(&obj, GIT_OBJ_TREE) < 0)
		return -1;

	*tree = (git_tree *)obj;
	return 0;
}
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int git_repository_message(char *buffer, size_t len, git_repository *repo)
{
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	git_buf buf = GIT_BUF_INIT, path = GIT_BUF_INIT;
	struct stat st;
	int error;
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	if (git_buf_joinpath(&path, repo->path_repository, GIT_MERGE_MSG_FILE) < 0)
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		return -1;
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	if ((error = p_stat(git_buf_cstr(&path), &st)) < 0) {
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		if (errno == ENOENT)
			error = GIT_ENOTFOUND;
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	}
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	else if (buffer != NULL) {
		error = git_futils_readbuffer(&buf, git_buf_cstr(&path));
		git_buf_copy_cstr(buffer, len, &buf);
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	}
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	git_buf_free(&path);
	git_buf_free(&buf);
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	if (!error)
		error = (int)st.st_size + 1; /* add 1 for NUL byte */

	return error;
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}

int git_repository_message_remove(git_repository *repo)
{
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	git_buf path = GIT_BUF_INIT;
	int error;
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	if (git_buf_joinpath(&path, repo->path_repository, GIT_MERGE_MSG_FILE) < 0)
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		return -1;
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	error = p_unlink(git_buf_cstr(&path));
	git_buf_free(&path);

	return error;
}
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int git_repository_hashfile(
    git_oid *out,
    git_repository *repo,
    const char *path,
    git_otype type,
    const char *as_path)
{
	int error;
	git_vector filters = GIT_VECTOR_INIT;
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	git_file fd = -1;
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	git_off_t len;
	git_buf full_path = GIT_BUF_INIT;

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	assert(out && path && repo); /* as_path can be NULL */

	/* At some point, it would be nice if repo could be NULL to just
	 * apply filter rules defined in system and global files, but for
	 * now that is not possible because git_filters_load() needs it.
	 */
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	error = git_path_join_unrooted(
		&full_path, path, repo ? git_repository_workdir(repo) : NULL, NULL);
	if (error < 0)
		return error;

	if (!as_path)
		as_path = path;

	/* passing empty string for "as_path" indicated --no-filters */
	if (strlen(as_path) > 0) {
		error = git_filters_load(&filters, repo, as_path, GIT_FILTER_TO_ODB);
		if (error < 0)
			return error;
	} else {
		error = 0;
	}

	/* at this point, error is a count of the number of loaded filters */

	fd = git_futils_open_ro(full_path.ptr);
	if (fd < 0) {
		error = fd;
		goto cleanup;
	}

	len = git_futils_filesize(fd);
	if (len < 0) {
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		error = (int)len;
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		goto cleanup;
	}

	if (!git__is_sizet(len)) {
		giterr_set(GITERR_OS, "File size overflow for 32-bit systems");
		error = -1;
		goto cleanup;
	}

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	error = git_odb__hashfd_filtered(out, fd, (size_t)len, type, &filters);
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cleanup:
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	if (fd >= 0)
		p_close(fd);
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	git_filters_free(&filters);
	git_buf_free(&full_path);

	return error;
}

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static bool looks_like_a_branch(const char *refname)
{
	return git__prefixcmp(refname, GIT_REFS_HEADS_DIR) == 0;
}

int git_repository_set_head(
	git_repository* repo,
	const char* refname)
{
	git_reference *ref,
		*new_head = NULL;
	int error;

	assert(repo && refname);

	error = git_reference_lookup(&ref, repo, refname);
	if (error < 0 && error != GIT_ENOTFOUND)
		return error;

	if (!error) {
		if (git_reference_is_branch(ref))
			error = git_reference_create_symbolic(&new_head, repo, GIT_HEAD_FILE, git_reference_name(ref), 1);
		else
			error = git_repository_set_head_detached(repo, git_reference_oid(ref));
	} else if (looks_like_a_branch(refname))
		error = git_reference_create_symbolic(&new_head, repo, GIT_HEAD_FILE, refname, 1);

	git_reference_free(ref);
	git_reference_free(new_head);
	return error;
}

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int git_repository_set_head_detached(
	git_repository* repo,
	const git_oid* commitish)
{
	int error;
	git_object *object,
		*peeled = NULL;
	git_reference *new_head = NULL;

	assert(repo && commitish);

	if ((error = git_object_lookup(&object, repo, commitish, GIT_OBJ_ANY)) < 0)
		return error;

	if ((error = git_object_peel(&peeled, object, GIT_OBJ_COMMIT)) < 0)
		goto cleanup;

	error = git_reference_create_oid(&new_head, repo, GIT_HEAD_FILE, git_object_id(peeled), 1);

cleanup:
	git_object_free(object);
	git_object_free(peeled);
	git_reference_free(new_head);
	return error;
}

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int git_repository_detach_head(
	git_repository* repo)
{
	git_reference *old_head = NULL,
		*new_head = NULL;
	git_object *object = NULL;
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	int error;
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	assert(repo);

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	if ((error = git_repository_head(&old_head, repo)) < 0)
		return error;
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	if ((error = git_object_lookup(&object, repo, git_reference_oid(old_head), GIT_OBJ_COMMIT)) < 0)
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		goto cleanup;

	error = git_reference_create_oid(&new_head, repo, GIT_HEAD_FILE, git_reference_oid(old_head), 1);

cleanup:
	git_object_free(object);
	git_reference_free(old_head);
	git_reference_free(new_head);
	return error;
}
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/**
 * Loosely ported from git.git
 * https://github.com/git/git/blob/master/contrib/completion/git-prompt.sh#L198-289
 */
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int git_repository_state(git_repository *repo)
{
	git_buf repo_path = GIT_BUF_INIT;
	int state = GIT_REPOSITORY_STATE_NONE;

	assert(repo);

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	if (!git_repository_head_detached(repo))
		return state;

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	if (git_buf_puts(&repo_path, repo->path_repository) < 0)
		return -1;

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	if (git_path_contains_file(&repo_path, GIT_REBASE_MERGE_INTERACTIVE_FILE))
		state = GIT_REPOSITORY_STATE_REBASE_INTERACTIVE;
	else if (git_path_contains_dir(&repo_path, GIT_REBASE_MERGE_DIR))
		state = GIT_REPOSITORY_STATE_REBASE_MERGE;
	else if (git_path_contains_file(&repo_path, GIT_REBASE_APPLY_REBASING_FILE))
		state = GIT_REPOSITORY_STATE_REBASE;
	else if (git_path_contains_file(&repo_path, GIT_REBASE_APPLY_APPLYING_FILE))
		state = GIT_REPOSITORY_STATE_APPLY_MAILBOX;
	else if (git_path_contains_dir(&repo_path, GIT_REBASE_APPLY_DIR))
		state = GIT_REPOSITORY_STATE_APPLY_MAILBOX_OR_REBASE;
	else if (git_path_contains_file(&repo_path, GIT_MERGE_HEAD_FILE))
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		state = GIT_REPOSITORY_STATE_MERGE;
	else if(git_path_contains_file(&repo_path, GIT_REVERT_HEAD_FILE))
		state = GIT_REPOSITORY_STATE_REVERT;
	else if(git_path_contains_file(&repo_path, GIT_CHERRY_PICK_HEAD_FILE))
		state = GIT_REPOSITORY_STATE_CHERRY_PICK;
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	else if(git_path_contains_file(&repo_path, GIT_BISECT_LOG_FILE))
		state = GIT_REPOSITORY_STATE_BISECT;
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	git_buf_free(&repo_path);
	return state;
}