+ die("$%s too big after expansion to absolute path",
+ GIT_DIR_ENVIRONMENT);
+ }
+ }
+
+ strcat(cwd, "/");
+ strcat(gitdir, "/");
+ inside_git_dir = !prefixcmp(cwd, gitdir);
+
+ gitworktree = getenv(GIT_WORK_TREE_ENVIRONMENT);
+ if (!gitworktree) {
+ gitworktree_config = worktree;
+ worktree[0] = '\0';
+ }
+ git_config(git_setup_config);
+ if (!gitworktree) {
+ gitworktree_config = NULL;
+ if (worktree[0])
+ gitworktree = worktree;
+ if (gitworktree && gitworktree[0] != '/')
+ wt_rel_gitdir = 1;
+ }
+
+ if (wt_rel_gitdir && chdir(gitdirenv))
+ die("Cannot change directory to $%s '%s'",
+ GIT_DIR_ENVIRONMENT, gitdirenv);
+ if (gitworktree && chdir(gitworktree)) {
+ if (nongit_ok) {
+ if (wt_rel_gitdir && chdir(cwd))
+ die("Cannot come back to cwd");
+ *nongit_ok = 1;
+ return NULL;
+ }
+ if (wt_rel_gitdir)
+ die("Cannot change directory to working tree '%s'"
+ " from $%s", gitworktree, GIT_DIR_ENVIRONMENT);
+ else
+ die("Cannot change directory to working tree '%s'",
+ gitworktree);