Earlier, we punted and simply assumed that we are in the top-level
directory of the project, and that there is no .git file but a .git/
directory so that we can read directly from .git/config.
However, that is not necessarily true. We may be in a subdirectory. Or
.git may be a gitfile. Or the environment variable GIT_DIR may be set.
To remedy this situation, we just refactored the way
setup_git_directory() discovers the .git/ directory, to make it
reusable, and more importantly, to leave all global variables and the
current working directory alone.
Let's discover the .git/ directory correctly in read_early_config() by
using that new function.
This fixes 4 known breakages in t7006.
Signed-off-by: Johannes Schindelin <johannes.schinde...@gmx.de>
---
config.c | 33 ++++++++++++++-------------------
setup.c | 14 +++++++++++++-
t/t7006-pager.sh | 8 ++++----
3 files changed, 31 insertions(+), 24 deletions(-)
diff --git a/config.c b/config.c
index 068fa4dcfa6..749623a9649 100644
--- a/config.c
+++ b/config.c
@@ -1414,34 +1414,29 @@ static void configset_iter(struct config_set *cs,
config_fn_t fn, void *data)
void read_early_config(config_fn_t cb, void *data)
{
+ struct strbuf buf = STRBUF_INIT;
+
git_config_with_options(cb, data, NULL, 1);
/*
- * Note that this is a really dirty hack that does the wrong thing in
- * many cases. The crux of the problem is that we cannot run
- * setup_git_directory() early on in git's setup, so we have no idea if
- * we are in a repository or not, and therefore are not sure whether
- * and how to read repository-local config.
- *
- * So if we _aren't_ in a repository (or we are but we would reject its
- * core.repositoryformatversion), we'll read whatever is in .git/config
- * blindly. Similarly, if we _are_ in a repository, but not at the
- * root, we'll fail to find .git/config (because it's really
- * ../.git/config, etc), unless setup_git_directory() was already
called.
- * See t7006 for a complete set of failures.
- *
- * However, we have historically provided this hack because it does
- * work some of the time (namely when you are at the top-level of a
- * valid repository), and would rarely make things worse (i.e., you do
- * not generally have a .git/config file sitting around).
+ * When we are not about to create a repository ourselves (init or
+ * clone) and when no .git/ directory was set up yet (in which case
+ * git_config_with_options() would already have picked up the
+ * repository config), we ask discover_git_directory() to figure out
+ * whether there is any repository config we should use (but unlike
+ * setup_git_directory_gently(), no global state is changed, most
+ * notably, the current working directory is still the same after
+ * the call).
*/
- if (!have_git_dir()) {
+ if (!have_git_dir() && discover_git_directory(&buf)) {
struct git_config_source repo_config;
memset(&repo_config, 0, sizeof(repo_config));
- repo_config.file = ".git/config";
+ strbuf_addstr(&buf, "/config");
+ repo_config.file = buf.buf;
git_config_with_options(cb, data, &repo_config, 1);
}
+ strbuf_release(&buf);
}
static void git_config_check_init(void);
diff --git a/setup.c b/setup.c
index 32ce023638a..5320ae37314 100644
--- a/setup.c
+++ b/setup.c
@@ -925,8 +925,9 @@ static enum discovery_result
setup_git_directory_gently_1(struct strbuf *dir,
const char *discover_git_directory(struct strbuf *gitdir)
{
- struct strbuf dir = STRBUF_INIT;
+ struct strbuf dir = STRBUF_INIT, err = STRBUF_INIT;
size_t gitdir_offset = gitdir->len, cwd_len;
+ struct repository_format candidate;
if (strbuf_getcwd(&dir))
return NULL;
@@ -949,8 +950,19 @@ const char *discover_git_directory(struct strbuf *gitdir)
strbuf_addch(&dir, '/');
strbuf_insert(gitdir, gitdir_offset, dir.buf, dir.len);
}
+
+ strbuf_reset(&dir);
+ strbuf_addf(&dir, "%s/config", gitdir->buf + gitdir_offset);
+ read_repository_format(&candidate, dir.buf);
strbuf_release(&dir);
+ if (verify_repository_format(&candidate, &err) < 0) {
+ warning("ignoring git dir '%s': %s",
+ gitdir->buf + gitdir_offset, err.buf);
+ strbuf_release(&err);
+ return NULL;
+ }
+
return gitdir->buf;
}
diff --git a/t/t7006-pager.sh b/t/t7006-pager.sh
index 304ae06c600..4f3794d415e 100755
--- a/t/t7006-pager.sh
+++ b/t/t7006-pager.sh
@@ -360,19 +360,19 @@ test_pager_choices 'git aliasedlog'
test_default_pager expect_success 'git -p aliasedlog'
test_PAGER_overrides expect_success 'git -p aliasedlog'
test_core_pager_overrides expect_success 'git -p aliasedlog'
-test_core_pager_subdir expect_failure 'git -p aliasedlog'
+test_core_pager_subdir expect_success 'git -p aliasedlog'
test_GIT_PAGER_overrides expect_success 'git -p aliasedlog'
test_default_pager expect_success 'git -p true'
test_PAGER_overrides expect_success 'git -p true'
test_core_pager_overrides expect_success 'git -p true'
-test_core_pager_subdir expect_failure 'git -p true'
+test_core_pager_subdir expect_success 'git -p true'
test_GIT_PAGER_overrides expect_success 'git -p true'
test_default_pager expect_success test_must_fail 'git -p request-pull'
test_PAGER_overrides expect_success test_must_fail 'git -p request-pull'
test_core_pager_overrides expect_success test_must_fail 'git -p request-pull'
-test_core_pager_subdir expect_failure test_must_fail 'git -p request-pull'
+test_core_pager_subdir expect_success test_must_fail 'git -p request-pull'
test_GIT_PAGER_overrides expect_success test_must_fail 'git -p request-pull'
test_default_pager expect_success test_must_fail 'git -p'
@@ -380,7 +380,7 @@ test_PAGER_overrides expect_success test_must_fail
'git -p'
test_local_config_ignored expect_failure test_must_fail 'git -p'
test_GIT_PAGER_overrides expect_success test_must_fail 'git -p'
-test_expect_failure TTY 'core.pager in repo config works and retains cwd' '
+test_expect_success TTY 'core.pager in repo config works and retains cwd' '
sane_unset GIT_PAGER &&
test_config core.pager "cat >cwd-retained" &&
(
--
2.12.0.windows.1.7.g94dafc3b124
