We already have support in `git receive-pack` to deal with some legacy
repositories which have non-fatal issues.
Let's make `git fsck` itself useful with such repositories, too, by
allowing users to ignore known issues, or at least demote those issues
to mere warnings.
Example: `git -c fsck.ignore=missing-email fsck` would hide problems with
missing emails in author, committer and tagger lines.
In the same spirit that `git receive-pack`'s usage of the fsck machinery
differs from `git fsck`'s – some of the non-fatal warnings in `git fsck`
are fatal with `git receive-pack` when receive.fsckObjects = true, for
example – we strictly separate the fsck.* from the receive.fsck.*
settings.
Signed-off-by: Johannes Schindelin <johannes.schindelin@xxxxxx>
---
Documentation/config.txt | 15 +++++++++++++++
builtin/fsck.c | 15 +++++++++++++++
t/t1450-fsck.sh | 11 +++++++++++
3 files changed, 41 insertions(+)
diff --git a/Documentation/config.txt b/Documentation/config.txt
index cc4cd91..115811c 100644
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -1208,6 +1208,21 @@ filter.<driver>.smudge::
object to a worktree file upon checkout. See
linkgit:gitattributes[5] for details.
+fsck.error::
+fsck.warn::
+fsck.ignore::
+ The `fsck.error`, `fsck.warn` and `fsck.ignore` settings specify
+ comma-separated lists of fsck message IDs which should trigger
+ fsck to error out, to print the message and continue, or to ignore
+ said messages, respectively.
++
+For convenience, fsck prefixes the error/warning with the name of the option,
+e.g. "missing-email: invalid author/committer line - missing email" means
+that setting `fsck.ignore = missing-email` will hide that issue.
++
+This feature is intended to support working with legacy repositories
+which cannot be repaired without disruptive changes.
+
gc.aggressiveDepth::
The depth parameter used in the delta compression
algorithm used by 'git gc --aggressive'. This defaults
diff --git a/builtin/fsck.c b/builtin/fsck.c
index 99d4538..6f5e671 100644
--- a/builtin/fsck.c
+++ b/builtin/fsck.c
@@ -46,6 +46,19 @@ static int show_dangling = 1;
#define DIRENT_SORT_HINT(de) ((de)->d_ino)
#endif
+static int fsck_config(const char *var, const char *value, void *cb)
+{
+ if (skip_prefix(var, "fsck.", &var)) {
+ struct strbuf sb = STRBUF_INIT;
+ strbuf_addf(&sb, "%s=%s", var, value);
+ fsck_set_severity(&fsck_obj_options, sb.buf);
+ strbuf_release(&sb);
+ return 0;
+ }
+
+ return git_default_config(var, value, cb);
+}
+
static void objreport(struct object *obj, const char *severity,
const char *err)
{
@@ -638,6 +651,8 @@ int cmd_fsck(int argc, const char **argv, const char *prefix)
include_reflogs = 0;
}
+ git_config(fsck_config, NULL);
+
fsck_head_link();
fsck_object_dir(get_object_directory());
diff --git a/t/t1450-fsck.sh b/t/t1450-fsck.sh
index ea0f216..a79ff9f 100755
--- a/t/t1450-fsck.sh
+++ b/t/t1450-fsck.sh
@@ -287,6 +287,17 @@ test_expect_success 'rev-list --verify-objects with bad sha1' '
grep -q "error: sha1 mismatch 63ffffffffffffffffffffffffffffffffffffff" out
'
+test_expect_success 'force fsck to ignore double author' '
+ git cat-file commit HEAD >basis &&
+ sed "s/^author .*/&,&/" <basis | tr , \\n >multiple-authors &&
+ new=$(git hash-object -t commit -w --stdin <multiple-authors) &&
+ test_when_finished "remove_object $new" &&
+ git update-ref refs/heads/bogus "$new" &&
+ test_when_finished "git update-ref -d refs/heads/bogus" &&
+ test_must_fail git fsck &&
+ git -c fsck.ignore=multiple-authors fsck
+'
+
_bz='\0'
_bz5="$_bz$_bz$_bz$_bz$_bz"
_bz20="$_bz5$_bz5$_bz5$_bz5"
--
2.2.0.33.gc18b867
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