submodule: use absolute path for computing relative path connecting

The current caller of connect_work_tree_and_git_dir passes an absolute path for the `git_dir` parameter. In the future patch we will also pass in relative path for `git_dir`. Extend the functionality of connect_work_tree_and_git_dir to take relative paths for parameters. We could work around this in the future patch by computing the absolute path for the git_dir in the calling site, however accepting relative paths for either parameter makes the API for this function much harder to misuse. Signed-off-by: Stefan Beller <sbeller@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Stefan Beller committed Dec 8, 2016 at 13:03 UTC 90c0011619bd4cd4b14c366ab7a9affacb43276a
1 file changed +7 -6
submodule.c
+7 -6
@@ -1223,27 +1223,28 @@ int merge_submodule(unsigned char result[20], const char *path,
1223 }
1224
1225 /* Update gitfile and core.worktree setting to connect work tree and git dir */
1226 -void connect_work_tree_and_git_dir(const char *work_tree, const char *git_dir)
1226 +void connect_work_tree_and_git_dir(const char *work_tree_, const char *git_dir_)
1227 {
1228 struct strbuf file_name = STRBUF_INIT;
1229 struct strbuf rel_path = STRBUF_INIT;
1230 - const char *real_work_tree = xstrdup(real_path(work_tree));
1230 + char *git_dir = xstrdup(real_path(git_dir_));
1231 + char *work_tree = xstrdup(real_path(work_tree_));
1232
1233 /* Update gitfile */
1234 strbuf_addf(&file_name, "%s/.git", work_tree);
1235 write_file(file_name.buf, "gitdir: %s",
1235 - relative_path(git_dir, real_work_tree, &rel_path));
1236 + relative_path(git_dir, work_tree, &rel_path));
1237
1238 /* Update core.worktree setting */
1239 strbuf_reset(&file_name);
1240 strbuf_addf(&file_name, "%s/config", git_dir);
1241 git_config_set_in_file(file_name.buf, "core.worktree",
1241 - relative_path(real_work_tree, git_dir,
1242 - &rel_path));
1242 + relative_path(work_tree, git_dir, &rel_path));
1243
1244 strbuf_release(&file_name);
1245 strbuf_release(&rel_path);
1246 - free((void *)real_work_tree);
1246 + free(work_tree);
1247 + free(git_dir);
1248 }
1249
1250 int parallel_submodules(void)