From a9472afb6328e22cdaea4225d3b36b97d2e9e704 Mon Sep 17 00:00:00 2001 From: Philippe Blain Date: Tue, 21 Jan 2020 15:01:17 +0000 Subject: submodule.c: use get_git_dir() instead of get_git_common_dir() Ever since df56607dff (git-common-dir: make "modules/" per-working-directory directory, 2014-11-30), submodules in linked worktrees are cloned to $GIT_DIR/modules, i.e. $GIT_COMMON_DIR/worktrees//modules. However, this convention was not followed when the worktree updater commands checkout, reset and read-tree learned to recurse into submodules. Specifically, submodule.c::submodule_move_head, introduced in 6e3c1595c6 (update submodules: add submodule_move_head, 2017-03-14) and submodule.c::submodule_unset_core_worktree, (re)introduced in 898c2e65b7 (submodule: unset core.worktree if no working tree is present, 2018-12-14) use get_git_common_dir() instead of get_git_dir() to get the path of the submodule repository. This means that, for example, 'git checkout --recurse-submodules ' in a linked worktree will correctly checkout , detach the submodule's HEAD at the commit recorded in and update the submodule working tree, but the submodule HEAD that will be moved is the one in $GIT_COMMON_DIR/modules//, i.e. the submodule repository of the main superproject working tree. It will also rewrite the gitfile in the submodule working tree of the linked worktree to point to $GIT_COMMON_DIR/modules//. This leads to an incorrect (and confusing!) state in the submodule working tree of the main superproject worktree. Additionally, if switching to a commit where the submodule is not present, submodule_unset_core_worktree will be called and will incorrectly remove 'core.wortree' from the config file of the submodule in the main superproject worktree, $GIT_COMMON_DIR/modules//config. Fix this by constructing the path to the submodule repository using get_git_dir() in both submodule_move_head and submodule_unset_core_worktree. Signed-off-by: Philippe Blain Signed-off-by: Junio C Hamano --- submodule.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'submodule.c') diff --git a/submodule.c b/submodule.c index 9da7181321..5d19ec48a6 100644 --- a/submodule.c +++ b/submodule.c @@ -1811,7 +1811,7 @@ out: void submodule_unset_core_worktree(const struct submodule *sub) { char *config_path = xstrfmt("%s/modules/%s/config", - get_git_common_dir(), sub->name); + get_git_dir(), sub->name); if (git_config_set_in_file_gently(config_path, "core.worktree", NULL)) warning(_("Could not unset core.worktree setting in submodule '%s'"), @@ -1914,7 +1914,7 @@ int submodule_move_head(const char *path, ABSORB_GITDIR_RECURSE_SUBMODULES); } else { char *gitdir = xstrfmt("%s/modules/%s", - get_git_common_dir(), sub->name); + get_git_dir(), sub->name); connect_work_tree_and_git_dir(path, gitdir, 0); free(gitdir); @@ -1924,7 +1924,7 @@ int submodule_move_head(const char *path, if (old_head && (flags & SUBMODULE_MOVE_HEAD_FORCE)) { char *gitdir = xstrfmt("%s/modules/%s", - get_git_common_dir(), sub->name); + get_git_dir(), sub->name); connect_work_tree_and_git_dir(path, gitdir, 1); free(gitdir); } -- cgit v1.3