X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=blobdiff_plain;f=setup.c;h=43cd3f94ea31a7a2a8f8a07cbb67598bb1e52c39;hb=2ce1a1f23fd83d2cab22f87aff1165fb0c7ad450;hp=06004f15874fbcbab50eafd272c5898a34fcdcfe;hpb=c576304d512df18fa30b91bb3ac15478d5d4dfb1;p=git.git

diff --git a/setup.c b/setup.c
index 06004f158..43cd3f94e 100644
--- a/setup.c
+++ b/setup.c
@@ -206,6 +206,22 @@ static const char *set_work_tree(const char *dir)
 	return NULL;
 }
 
+void setup_work_tree(void)
+{
+	const char *work_tree, *git_dir;
+	static int initialized = 0;
+
+	if (initialized)
+		return;
+	work_tree = get_git_work_tree();
+	git_dir = get_git_dir();
+	if (!is_absolute_path(git_dir))
+		set_git_dir(make_absolute_path(git_dir));
+	if (!work_tree || chdir(work_tree))
+		die("This operation must be run in a work tree");
+	initialized = 1;
+}
+
 /*
  * We cannot decide in this function whether we are in the work tree or
  * not, since the config can only be read _after_ this function was called.
@@ -227,9 +243,20 @@ const char *setup_git_directory_gently(int *nongit_ok)
 		if (PATH_MAX - 40 < strlen(gitdirenv))
 			die("'$%s' too big", GIT_DIR_ENVIRONMENT);
 		if (is_git_directory(gitdirenv)) {
+			static char buffer[1024 + 1];
+			const char *retval;
+
 			if (!work_tree_env)
 				return set_work_tree(gitdirenv);
-			return NULL;
+			retval = get_relative_cwd(buffer, sizeof(buffer) - 1,
+					get_git_work_tree());
+			if (!retval || !*retval)
+				return NULL;
+			set_git_dir(make_absolute_path(gitdirenv));
+			if (chdir(work_tree_env) < 0)
+				die ("Could not chdir to %s", work_tree_env);
+			strcat(buffer, "/");
+			return retval;
 		}
 		if (nongit_ok) {
 			*nongit_ok = 1;