From b29759d89a688bf6d198786757111d690a08cbdf Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Nguy=E1=BB=85n=20Th=C3=A1i=20Ng=E1=BB=8Dc=20Duy?= Date: Sun, 21 Oct 2018 10:08:58 +0200 Subject: [PATCH] fsck: check HEAD and reflog from other worktrees MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit fsck is a repo-wide operation and should check all references no matter which worktree they are associated to. Reported-by: Jeff King Helped-by: Elijah Newren Signed-off-by: Nguyễn Thái Ngọc Duy Signed-off-by: Junio C Hamano --- builtin/fsck.c | 55 ++++++++++++++++++++++++++++++++++--------------- t/t1450-fsck.sh | 35 +++++++++++++++++++++++++++++++ 2 files changed, 73 insertions(+), 17 deletions(-) diff --git a/builtin/fsck.c b/builtin/fsck.c index 24f8a09a3c..71492c158d 100644 --- a/builtin/fsck.c +++ b/builtin/fsck.c @@ -19,6 +19,7 @@ #include "packfile.h" #include "object-store.h" #include "run-command.h" +#include "worktree.h" #define REACHABLE 0x0001 #define SEEN 0x0002 @@ -444,7 +445,11 @@ static int fsck_handle_reflog_ent(struct object_id *ooid, struct object_id *noid static int fsck_handle_reflog(const char *logname, const struct object_id *oid, int flag, void *cb_data) { - for_each_reflog_ent(logname, fsck_handle_reflog_ent, (void *)logname); + struct strbuf refname = STRBUF_INIT; + + strbuf_worktree_ref(cb_data, &refname, logname); + for_each_reflog_ent(refname.buf, fsck_handle_reflog_ent, refname.buf); + strbuf_release(&refname); return 0; } @@ -482,20 +487,34 @@ static int fsck_handle_ref(const char *refname, const struct object_id *oid, return 0; } -static int fsck_head_link(const char **head_points_at, +static int fsck_head_link(const char *head_ref_name, + const char **head_points_at, struct object_id *head_oid); static void get_default_heads(void) { + struct worktree **worktrees, **p; const char *head_points_at; struct object_id head_oid; - fsck_head_link(&head_points_at, &head_oid); - if (head_points_at && !is_null_oid(&head_oid)) - fsck_handle_ref("HEAD", &head_oid, 0, NULL); for_each_rawref(fsck_handle_ref, NULL); - if (include_reflogs) - for_each_reflog(fsck_handle_reflog, NULL); + + worktrees = get_worktrees(0); + for (p = worktrees; *p; p++) { + struct worktree *wt = *p; + struct strbuf ref = STRBUF_INIT; + + strbuf_worktree_ref(wt, &ref, "HEAD"); + fsck_head_link(ref.buf, &head_points_at, &head_oid); + if (head_points_at && !is_null_oid(&head_oid)) + fsck_handle_ref(ref.buf, &head_oid, 0, NULL); + strbuf_release(&ref); + + if (include_reflogs) + refs_for_each_reflog(get_worktree_ref_store(wt), + fsck_handle_reflog, wt); + } + free_worktrees(worktrees); /* * Not having any default heads isn't really fatal, but @@ -584,34 +603,36 @@ static void fsck_object_dir(const char *path) stop_progress(&progress); } -static int fsck_head_link(const char **head_points_at, +static int fsck_head_link(const char *head_ref_name, + const char **head_points_at, struct object_id *head_oid) { int null_is_error = 0; if (verbose) - fprintf(stderr, "Checking HEAD link\n"); + fprintf(stderr, "Checking %s link\n", head_ref_name); - *head_points_at = resolve_ref_unsafe("HEAD", 0, head_oid, NULL); + *head_points_at = resolve_ref_unsafe(head_ref_name, 0, head_oid, NULL); if (!*head_points_at) { errors_found |= ERROR_REFS; - return error("Invalid HEAD"); + return error("Invalid %s", head_ref_name); } - if (!strcmp(*head_points_at, "HEAD")) + if (!strcmp(*head_points_at, head_ref_name)) /* detached HEAD */ null_is_error = 1; else if (!starts_with(*head_points_at, "refs/heads/")) { errors_found |= ERROR_REFS; - return error("HEAD points to something strange (%s)", - *head_points_at); + return error("%s points to something strange (%s)", + head_ref_name, *head_points_at); } if (is_null_oid(head_oid)) { if (null_is_error) { errors_found |= ERROR_REFS; - return error("HEAD: detached HEAD points at nothing"); + return error("%s: detached HEAD points at nothing", + head_ref_name); } - fprintf(stderr, "notice: HEAD points to an unborn branch (%s)\n", - *head_points_at + 11); + fprintf(stderr, "notice: %s points to an unborn branch (%s)\n", + head_ref_name, *head_points_at + 11); } return 0; } diff --git a/t/t1450-fsck.sh b/t/t1450-fsck.sh index 0f2dd26f74..28201677d5 100755 --- a/t/t1450-fsck.sh +++ b/t/t1450-fsck.sh @@ -101,6 +101,41 @@ test_expect_success 'HEAD link pointing at a funny place' ' grep "HEAD points to something strange" out ' +test_expect_success 'HEAD link pointing at a funny object (from different wt)' ' + test_when_finished "mv .git/SAVED_HEAD .git/HEAD" && + test_when_finished "rm -rf .git/worktrees wt" && + git worktree add wt && + mv .git/HEAD .git/SAVED_HEAD && + echo $ZERO_OID >.git/HEAD && + # avoid corrupt/broken HEAD from interfering with repo discovery + test_must_fail git -C wt fsck 2>out && + grep "main-worktree/HEAD: detached HEAD points" out +' + +test_expect_success 'other worktree HEAD link pointing at a funny object' ' + test_when_finished "rm -rf .git/worktrees other" && + git worktree add other && + echo $ZERO_OID >.git/worktrees/other/HEAD && + test_must_fail git fsck 2>out && + grep "worktrees/other/HEAD: detached HEAD points" out +' + +test_expect_success 'other worktree HEAD link pointing at missing object' ' + test_when_finished "rm -rf .git/worktrees other" && + git worktree add other && + echo "Contents missing from repo" | git hash-object --stdin >.git/worktrees/other/HEAD && + test_must_fail git fsck 2>out && + grep "worktrees/other/HEAD: invalid sha1 pointer" out +' + +test_expect_success 'other worktree HEAD link pointing at a funny place' ' + test_when_finished "rm -rf .git/worktrees other" && + git worktree add other && + echo "ref: refs/funny/place" >.git/worktrees/other/HEAD && + test_must_fail git fsck 2>out && + grep "worktrees/other/HEAD points to something strange" out +' + test_expect_success 'email without @ is okay' ' git cat-file commit HEAD >basis && sed "s/@/AT/" basis >okay &&