The git-fsck(1) only implicitly checks the reference, it does not fully
check refs with bad format name such as standalone "@" and name ending
with ".lock".
In order to provide such checks, add a new fsck message id "badRefName"
with default ERROR type. Use existing "check_refname_format" to explicit
check the ref name. And add a new unit test to verify the functionality.
Mentored-by: Patrick Steinhardt <ps@xxxxxx>
Mentored-by: Karthik Nayak <karthik.188@xxxxxxxxx>
Signed-off-by: shejialuo <shejialuo@xxxxxxxxx>
---
Documentation/fsck-msgids.txt | 3 +
fsck.h | 1 +
refs/files-backend.c | 20 +++++++
t/t0602-reffiles-fsck.sh | 101 ++++++++++++++++++++++++++++++++++
4 files changed, 125 insertions(+)
create mode 100755 t/t0602-reffiles-fsck.sh
diff --git a/Documentation/fsck-msgids.txt b/Documentation/fsck-msgids.txt
index f643585a34..dab4012246 100644
--- a/Documentation/fsck-msgids.txt
+++ b/Documentation/fsck-msgids.txt
@@ -19,6 +19,9 @@
`badParentSha1`::
(ERROR) A commit object has a bad parent sha1.
+`badRefName`::
+ (ERROR) A ref has a bad name.
+
`badTagName`::
(INFO) A tag has an invalid format.
diff --git a/fsck.h b/fsck.h
index 246055c0f9..90457d1a1f 100644
--- a/fsck.h
+++ b/fsck.h
@@ -31,6 +31,7 @@ enum fsck_msg_type {
FUNC(BAD_NAME, ERROR) \
FUNC(BAD_OBJECT_SHA1, ERROR) \
FUNC(BAD_PARENT_SHA1, ERROR) \
+ FUNC(BAD_REF_NAME, ERROR) \
FUNC(BAD_TIMEZONE, ERROR) \
FUNC(BAD_TREE, ERROR) \
FUNC(BAD_TREE_SHA1, ERROR) \
diff --git a/refs/files-backend.c b/refs/files-backend.c
index 84acb58782..69a76048d3 100644
--- a/refs/files-backend.c
+++ b/refs/files-backend.c
@@ -3419,6 +3419,25 @@ typedef int (*files_fsck_refs_fn)(struct fsck_options *o,
const char *refs_check_dir,
struct dir_iterator *iter);
+static int files_fsck_refs_name(struct fsck_options *o,
+ const char *gitdir UNUSED,
+ const char *refs_check_dir,
+ struct dir_iterator *iter)
+{
+ struct strbuf sb = STRBUF_INIT;
+ int ret = 0;
+
+ if (check_refname_format(iter->basename, REFNAME_ALLOW_ONELEVEL)) {
+ strbuf_addf(&sb, "%s/%s", refs_check_dir, iter->relative_path);
+ ret = fsck_refs_report(o, NULL, sb.buf,
+ FSCK_MSG_BAD_REF_NAME,
+ "invalid refname format");
+ }
+
+ strbuf_release(&sb);
+ return ret;
+}
+
static int files_fsck_refs_dir(struct ref_store *ref_store,
struct fsck_options *o,
const char *refs_check_dir,
@@ -3470,6 +3489,7 @@ static int files_fsck_refs(struct ref_store *ref_store,
{
int ret;
files_fsck_refs_fn fsck_refs_fns[]= {
+ files_fsck_refs_name,
NULL
};
diff --git a/t/t0602-reffiles-fsck.sh b/t/t0602-reffiles-fsck.sh
new file mode 100755
index 0000000000..b2db58d2c6
--- /dev/null
+++ b/t/t0602-reffiles-fsck.sh
@@ -0,0 +1,101 @@
+#!/bin/sh
+
+test_description='Test reffiles backend consistency check'
+
+GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
+export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
+GIT_TEST_DEFAULT_REF_FORMAT=files
+export GIT_TEST_DEFAULT_REF_FORMAT
+
+. ./test-lib.sh
+
+test_expect_success 'ref name should be checked' '
+ test_when_finished "rm -rf repo" &&
+ git init repo &&
+ branch_dir_prefix=.git/refs/heads &&
+ tag_dir_prefix=.git/refs/tags &&
+ (
+ cd repo &&
+ git commit --allow-empty -m initial &&
+ git checkout -b branch-1 &&
+ git tag tag-1 &&
+ git commit --allow-empty -m second &&
+ git checkout -b branch-2 &&
+ git tag tag-2 &&
+ git tag multi_hierarchy/tag-2
+ ) &&
+ (
+ cd repo &&
+ cp $branch_dir_prefix/branch-1 $branch_dir_prefix/.branch-1 &&
+ test_must_fail git fsck 2>err &&
+ cat >expect <<-EOF &&
+ error: refs/heads/.branch-1: badRefName: invalid refname format
+ EOF
+ rm $branch_dir_prefix/.branch-1 &&
+ test_cmp expect err
+ ) &&
+ (
+ cd repo &&
+ cp $tag_dir_prefix/tag-1 $tag_dir_prefix/tag-1.lock &&
+ test_must_fail git fsck 2>err &&
+ cat >expect <<-EOF &&
+ error: refs/tags/tag-1.lock: badRefName: invalid refname format
+ EOF
+ rm $tag_dir_prefix/tag-1.lock &&
+ test_cmp expect err
+ ) &&
+ (
+ cd repo &&
+ cp $branch_dir_prefix/branch-1 $branch_dir_prefix/@ &&
+ test_must_fail git fsck 2>err &&
+ cat >expect <<-EOF &&
+ error: refs/heads/@: badRefName: invalid refname format
+ EOF
+ rm $branch_dir_prefix/@ &&
+ test_cmp expect err
+ ) &&
+ (
+ cd repo &&
+ cp $tag_dir_prefix/multi_hierarchy/tag-2 $tag_dir_prefix/multi_hierarchy/@ &&
+ test_must_fail git fsck 2>err &&
+ cat >expect <<-EOF &&
+ error: refs/tags/multi_hierarchy/@: badRefName: invalid refname format
+ EOF
+ rm $tag_dir_prefix/multi_hierarchy/@ &&
+ test_cmp expect err
+ )
+'
+
+test_expect_success 'ref name check should be adapted into fsck messages' '
+ test_when_finished "rm -rf repo" &&
+ git init repo &&
+ branch_dir_prefix=.git/refs/heads &&
+ tag_dir_prefix=.git/refs/tags &&
+ (
+ cd repo &&
+ git commit --allow-empty -m initial &&
+ git checkout -b branch-1 &&
+ git tag tag-1 &&
+ git commit --allow-empty -m second &&
+ git checkout -b branch-2 &&
+ git tag tag-2
+ ) &&
+ (
+ cd repo &&
+ cp $branch_dir_prefix/branch-1 $branch_dir_prefix/.branch-1 &&
+ git -c fsck.badRefName=warn fsck 2>err &&
+ cat >expect <<-EOF &&
+ warning: refs/heads/.branch-1: badRefName: invalid refname format
+ EOF
+ rm $branch_dir_prefix/.branch-1 &&
+ test_cmp expect err
+ ) &&
+ (
+ cd repo &&
+ cp $branch_dir_prefix/branch-1 $branch_dir_prefix/@ &&
+ git -c fsck.badRefName=ignore fsck 2>err &&
+ test_must_be_empty err
+ )
+'
+
+test_done
--
2.45.2
