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authorHariom Verma <hariom18599@gmail.com>2020-02-23 18:57:10 (GMT)
committerJunio C Hamano <gitster@pobox.com>2020-02-24 19:14:43 (GMT)
commit4ef346482d6d5748861c1aa9d56712e847369b40 (patch)
tree074ab774624ffb5f5d2ab6c8f4e28a2cbb1565c6 /builtin/receive-pack.c
parentf8692114dbb1b3ffe0b71871a015c632c195b784 (diff)
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receive.denyCurrentBranch: respect all worktrees
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> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'builtin/receive-pack.c')
-rw-r--r--builtin/receive-pack.c36
1 files changed, 19 insertions, 17 deletions
diff --git a/builtin/receive-pack.c b/builtin/receive-pack.c
index 411e0b4..2cc18bb 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 +988,26 @@ 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 +1027,7 @@ 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 +1039,7 @@ 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 +1071,7 @@ 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 +1120,7 @@ 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;
}