Re: [GSoC][PATCH 6/6 v2] submodule: port submodule subcommand 'deinit' from shell to C

[Christian Couder <christian.couder@gmail.com>]

On Tue, Jun 27, 2017 at 1:11 AM, Prathamesh Chavan <pc44800@gmail.com> wrote:

> +static void deinit_submodule(const struct cache_entry *list_item,
> +                            void *cb_data)
> +{
> +       struct deinit_cb *info = cb_data;
> +       const struct submodule *sub;
> +       char *displaypath = NULL;
> +       struct child_process cp_config = CHILD_PROCESS_INIT;
> +       struct strbuf sb_config = STRBUF_INIT;
> +       char *sm_path = xstrdup(list_item->name);
> +       char *sub_git_dir = xstrfmt("%s/.git", sm_path);
> +
> +       sub = submodule_from_path(null_sha1, sm_path);
> +
> +       if (!sub->name)

In the previous patch "!sub" is used before "!sub->url", so we might
want to check "!sub" here too.

> +               goto cleanup;
> +
> +       displaypath = get_submodule_displaypath(sm_path, info->prefix);
> +
> +       /* remove the submodule work tree (unless the user already did it) */
> +       if (is_directory(sm_path)) {
> +               struct child_process cp = CHILD_PROCESS_INIT;
> +
> +               /* protect submodules containing a .git directory */
> +               if (is_git_directory(sub_git_dir))
> +                       die(_("Submodule work tree '%s' contains a .git "
> +                             "directory use 'rm -rf' if you really want "
> +                             "to remove it including all of its history"),
> +                             displaypath);
> +
> +               if (!info->force) {
> +                       struct child_process cp_rm = CHILD_PROCESS_INIT;
> +                       cp_rm.git_cmd = 1;
> +                       argv_array_pushl(&cp_rm.args, "rm", "-qn", sm_path,
> +                                        NULL);
> +
> +                       /* list_item->name is changed by cmd_rm() below */

It looks like cmd_rm() is not used anymore below, so this comment
could go and the sm_path variable might not be needed any more.

> +                       if (run_command(&cp_rm))
> +                               die(_("Submodule work tree '%s' contains local "
> +                                     "modifications; use '-f' to discard them"),
> +                                     displaypath);
> +               }
> +
> +               cp.use_shell = 1;

Do we really need a shell here?

> +               argv_array_pushl(&cp.args, "rm", "-rf", sm_path, NULL);
> +               if (!run_command(&cp)) {
> +                       if (!info->quiet)
> +                               printf(_("Cleared directory '%s'\n"),
> +                                        displaypath);
> +               } else {
> +                       if (!info->quiet)
> +                               printf(_("Could not remove submodule work tree '%s'\n"),
> +                                        displaypath);
> +               }
> +       }
> +
> +       if (mkdir(sm_path, 0700))

Are you sure about the 0700 mode?
Shouldn't this depend on the shared repository settings?

> +               die(_("could not create empty submodule directory %s"),
> +                     displaypath);