[PATCH 7/9] init: use get_git_work_tree() instead of rolling our own

[Johannes Schindelin <Johannes.Schindelin@gmx.de>]

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
---
 builtin-init-db.c |   48 +++++++++++-------------------------------------
 1 files changed, 11 insertions(+), 37 deletions(-)

diff --git a/builtin-init-db.c b/builtin-init-db.c
index 66ddaeb..0d9b1e0 100644
--- a/builtin-init-db.c
+++ b/builtin-init-db.c
@@ -174,36 +174,7 @@ static void copy_templates(const char *git_dir, int len, const char *template_di
 	closedir(dir);
 }
 
-/*
- * Get the full path to the working tree specified in $GIT_WORK_TREE
- * or NULL if no working tree is specified.
- */
-static const char *get_work_tree(void)
-{
-	const char *git_work_tree;
-	char cwd[PATH_MAX];
-	static char worktree[PATH_MAX];
-
-	git_work_tree = getenv(GIT_WORK_TREE_ENVIRONMENT);
-	if (!git_work_tree)
-		return NULL;
-	if (!getcwd(cwd, sizeof(cwd)))
-		die("Unable to read current working directory");
-	if (chdir(git_work_tree))
-		die("Cannot change directory to specified working tree '%s'",
-			git_work_tree);
-	if (git_work_tree[0] != '/') {
-		if (!getcwd(worktree, sizeof(worktree)))
-			die("Unable to read current working directory");
-		git_work_tree = worktree;
-	}
-	if (chdir(cwd))
-		die("Cannot come back to cwd");
-	return git_work_tree;
-}
-
-static int create_default_files(const char *git_dir, const char *git_work_tree,
-	const char *template_path)
+static int create_default_files(const char *git_dir, const char *template_path)
 {
 	unsigned len = strlen(git_dir);
 	static char path[PATH_MAX];
@@ -282,16 +253,16 @@ static int create_default_files(const char *git_dir, const char *git_work_tree,
 	}
 	git_config_set("core.filemode", filemode ? "true" : "false");
 
-	if (is_bare_repository() && !git_work_tree) {
+	if (is_bare_repository())
 		git_config_set("core.bare", "true");
-	}
 	else {
+		const char *work_tree = get_git_work_tree();
 		git_config_set("core.bare", "false");
 		/* allow template config file to override the default */
 		if (log_all_ref_updates == -1)
 		    git_config_set("core.logallrefupdates", "true");
-		if (git_work_tree)
-			git_config_set("core.worktree", git_work_tree);
+		if (work_tree != git_work_tree_cfg)
+			git_config_set("core.worktree", work_tree);
 	}
 	return reinit;
 }
@@ -308,7 +279,6 @@ static const char init_db_usage[] =
 int cmd_init_db(int argc, const char **argv, const char *prefix)
 {
 	const char *git_dir;
-	const char *git_work_tree;
 	const char *sha1_dir;
 	const char *template_dir = NULL;
 	char *path;
@@ -329,7 +299,11 @@ int cmd_init_db(int argc, const char **argv, const char *prefix)
 			usage(init_db_usage);
 	}
 
-	git_work_tree = get_work_tree();
+	git_work_tree_cfg = xcalloc(PATH_MAX, 1);
+	if (!getcwd(git_work_tree_cfg, PATH_MAX))
+		die ("Cannot access current working directory.");
+	if (access(get_git_work_tree(), X_OK))
+		die ("Cannot access work tree '%s'", get_git_work_tree());
 
 	/*
 	 * Set up the default .git directory contents
@@ -346,7 +320,7 @@ int cmd_init_db(int argc, const char **argv, const char *prefix)
 	 */
 	check_repository_format();
 
-	reinit = create_default_files(git_dir, git_work_tree, template_dir);
+	reinit = create_default_files(git_dir, template_dir);
 
 	/*
 	 * And set up the object store.
-- 
1.5.3.rc3.28.g1406