[PATCH v3 3/3] receive.denyCurrentBranch: respect all worktrees
From: Hariom Verma <hariom18599@gmail.com>
The receive.denyCurrentBranch config option controls what happens if you push to a branch that is checked out into a non-bare repository. By default, it rejects it. It can be disabled via `ignore` or `warn`. Another yet trickier option is `updateInstead`.
However, this setting was forgotten when the git worktree command was introduced: only the main worktree's current branch is respected.
With this change, all worktrees are respected.
That change also leads to revealing another bug, i.e. `receive.denyCurrentBranch = true` was ignored when pushing into a non-bare repository's unborn current branch using ref namespaces. As `is_ref_checked_out()` returns 0 which means `receive-pack` does not get into conditional statement to switch `deny_current_branch` accordingly (ignore, warn, refuse, unconfigured, updateInstead).
receive.denyCurrentBranch uses the function `refs_resolve_ref_unsafe()` (called via `resolve_refdup()`) to resolve the symbolic ref HEAD, but that function fails when HEAD does not point at a valid commit. As we replace the call to `refs_resolve_ref_unsafe()` with `find_shared_symref()`, which has no problem finding the worktree for a given branch even if it is unborn yet, this bug is fixed at the same time: receive.denyCurrentBranch now also handles worktrees with unborn branches as intended even while using ref namespaces.
Helped-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Hariom Verma <hariom18599@gmail.com>
---
builtin/receive-pack.c | 37 +++++++++++++++++---------------
t/t5509-fetch-push-namespaces.sh | 11 ++++++++++
t/t5516-fetch-push.sh | 11 ++++++++++
3 files changed, 42 insertions(+), 17 deletions(-)
Show changes to 3 files +42 −17
builtin/receive-pack.c, t/t5509-fetch-push-namespaces.sh, t/t5516-fetch-push.sh
diff --git a/builtin/receive-pack.c b/builtin/receive-pack.c
index 411e0b4d999..b5ca3123b78 100644
--- a/builtin/receive-pack.c
+++ b/builtin/receive-pack.c
@@ -27,6 +27,7 @@
#include "object-store.h"
#include "protocol.h"
#include "commit-reach.h"
+#include "worktree.h"
static const char * const receive_pack_usage[] = {
N_("git receive-pack <git-dir>"),
@@ -816,16 +817,6 @@ static int run_update_hook(struct command *cmd)
return finish_command(&proc);
}
-static int is_ref_checked_out(const char *ref)
-{
- if (is_bare_repository())
- return 0;
-
- if (!head_name)
- return 0;
- return !strcmp(head_name, ref);
-}
-
static char *refuse_unconfigured_deny_msg =
N_("By default, updating the current branch in a non-bare repository\n"
"is denied, because it will make the index and work tree inconsistent\n"
@@ -997,16 +988,27 @@ static const char *push_to_checkout(unsigned char *hash,
return NULL;
}
-static const char *update_worktree(unsigned char *sha1)
+static const char *update_worktree(unsigned char *sha1, const struct worktree *worktree)
{
- const char *retval;
- const char *work_tree = git_work_tree_cfg ? git_work_tree_cfg : "..";
+ const char *retval, *work_tree, *git_dir = NULL;
struct argv_array env = ARGV_ARRAY_INIT;
+ if (worktree && worktree->path)
+ work_tree = worktree->path;
+ else if (git_work_tree_cfg)
+ work_tree = git_work_tree_cfg;
+ else
+ work_tree = "..";
+
if (is_bare_repository())
return "denyCurrentBranch = updateInstead needs a worktree";
+
+ if (worktree)
+ git_dir = get_worktree_git_dir(worktree);
+ if (!git_dir)
+ git_dir = get_git_dir();
- argv_array_pushf(&env, "GIT_DIR=%s", absolute_path(get_git_dir()));
+ argv_array_pushf(&env, "GIT_DIR=%s", absolute_path(git_dir));
if (!find_hook(push_to_checkout_hook))
retval = push_to_deploy(sha1, &env, work_tree);
@@ -1026,6 +1028,7 @@ static const char *update(struct command *cmd, struct shallow_info *si)
struct object_id *old_oid = &cmd->old_oid;
struct object_id *new_oid = &cmd->new_oid;
int do_update_worktree = 0;
+ const struct worktree *worktree = is_bare_repository() ? NULL : find_shared_symref("HEAD", name);
/* only refs/... are allowed */
if (!starts_with(name, "refs/") || check_refname_format(name + 5, 0)) {
@@ -1037,7 +1040,7 @@ static const char *update(struct command *cmd, struct shallow_info *si)
free(namespaced_name);
namespaced_name = strbuf_detach(&namespaced_name_buf, NULL);
- if (is_ref_checked_out(namespaced_name)) {
+ if (worktree) {
switch (deny_current_branch) {
case DENY_IGNORE:
break;
@@ -1069,7 +1072,7 @@ static const char *update(struct command *cmd, struct shallow_info *si)
return "deletion prohibited";
}
- if (head_name && !strcmp(namespaced_name, head_name)) {
+ if (worktree || (head_name && !strcmp(namespaced_name, head_name))) {
switch (deny_delete_current) {
case DENY_IGNORE:
break;
@@ -1118,7 +1121,7 @@ static const char *update(struct command *cmd, struct shallow_info *si)
}
if (do_update_worktree) {
- ret = update_worktree(new_oid->hash);
+ ret = update_worktree(new_oid->hash, find_shared_symref("HEAD", name));
if (ret)
return ret;
}
diff --git a/t/t5509-fetch-push-namespaces.sh b/t/t5509-fetch-push-namespaces.sh
index e3975bd21de..a67f792adf4 100755
--- a/t/t5509-fetch-push-namespaces.sh
+++ b/t/t5509-fetch-push-namespaces.sh
@@ -152,4 +152,15 @@ test_expect_success 'clone chooses correct HEAD (v2)' '
test_cmp expect actual
'
+test_expect_success 'denyCurrentBranch and unborn branch with ref namespace' '
+ (
+ cd original &&
+ git init unborn &&
+ git remote add unborn-namespaced "ext::git --namespace=namespace %s unborn" &&
+ test_must_fail git push unborn-namespaced HEAD:master &&
+ git -C unborn config receive.denyCurrentBranch updateInstead &&
+ git push unborn-namespaced HEAD:master
+ )
+'
+
test_done
diff --git a/t/t5516-fetch-push.sh b/t/t5516-fetch-push.sh
index c81ca360ac4..49982b0fd90 100755
--- a/t/t5516-fetch-push.sh
+++ b/t/t5516-fetch-push.sh
@@ -1712,4 +1712,15 @@ test_expect_success 'updateInstead with push-to-checkout hook' '
)
'
+test_expect_success 'denyCurrentBranch and worktrees' '
+ git worktree add new-wt &&
+ git clone . cloned &&
+ test_commit -C cloned first &&
+ test_config receive.denyCurrentBranch refuse &&
+ test_must_fail git -C cloned push origin HEAD:new-wt &&
+ test_config receive.denyCurrentBranch updateInstead &&
+ git -C cloned push origin HEAD:new-wt &&
+ test_must_fail git -C cloned push --delete origin new-wt
+'
+
test_done
--
gitgitgadget
