git/builtin/fsck.c
Patrick Steinhardt 31f898397b refs: drop unused params from the reflog iterator callback
The ref and reflog iterators share much of the same underlying code to
iterate over the corresponding entries. This results in some weird code
because the reflog iterator also exposes an object ID as well as a flag
to the callback function. Neither of these fields do refer to the reflog
though -- they refer to the corresponding ref with the same name. This
is quite misleading. In practice at least the object ID cannot really be
implemented in any other way as a reflog does not have a specific object
ID in the first place. This is further stressed by the fact that none of
the callbacks except for our test helper make use of these fields.

Split up the infrastucture so that ref and reflog iterators use separate
callback signatures. This allows us to drop the nonsensical fields from
the reflog iterator.

Note that internally, the backends still use the same shared infra to
iterate over both types. As the backends should never end up being
called directly anyway, this is not much of a problem and thus kept
as-is for simplicity's sake.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-02-21 09:58:06 -08:00

1101 lines
29 KiB
C

#include "builtin.h"
#include "gettext.h"
#include "hex.h"
#include "repository.h"
#include "config.h"
#include "commit.h"
#include "tree.h"
#include "blob.h"
#include "tag.h"
#include "refs.h"
#include "pack.h"
#include "cache-tree.h"
#include "fsck.h"
#include "parse-options.h"
#include "progress.h"
#include "streaming.h"
#include "packfile.h"
#include "object-file.h"
#include "object-name.h"
#include "object-store-ll.h"
#include "path.h"
#include "read-cache-ll.h"
#include "replace-object.h"
#include "resolve-undo.h"
#include "run-command.h"
#include "sparse-index.h"
#include "worktree.h"
#include "pack-revindex.h"
#include "pack-bitmap.h"
#define REACHABLE 0x0001
#define SEEN 0x0002
#define HAS_OBJ 0x0004
/* This flag is set if something points to this object. */
#define USED 0x0008
static int show_root;
static int show_tags;
static int show_unreachable;
static int include_reflogs = 1;
static int check_full = 1;
static int connectivity_only;
static int check_strict;
static int keep_cache_objects;
static struct fsck_options fsck_walk_options = FSCK_OPTIONS_DEFAULT;
static struct fsck_options fsck_obj_options = FSCK_OPTIONS_DEFAULT;
static int errors_found;
static int write_lost_and_found;
static int verbose;
static int show_progress = -1;
static int show_dangling = 1;
static int name_objects;
#define ERROR_OBJECT 01
#define ERROR_REACHABLE 02
#define ERROR_PACK 04
#define ERROR_REFS 010
#define ERROR_COMMIT_GRAPH 020
#define ERROR_MULTI_PACK_INDEX 040
#define ERROR_PACK_REV_INDEX 0100
#define ERROR_BITMAP 0200
static const char *describe_object(const struct object_id *oid)
{
return fsck_describe_object(&fsck_walk_options, oid);
}
static const char *printable_type(const struct object_id *oid,
enum object_type type)
{
const char *ret;
if (type == OBJ_NONE)
type = oid_object_info(the_repository, oid, NULL);
ret = type_name(type);
if (!ret)
ret = _("unknown");
return ret;
}
static int objerror(struct object *obj, const char *err)
{
errors_found |= ERROR_OBJECT;
/* TRANSLATORS: e.g. error in tree 01bfda: <more explanation> */
fprintf_ln(stderr, _("error in %s %s: %s"),
printable_type(&obj->oid, obj->type),
describe_object(&obj->oid), err);
return -1;
}
static int fsck_error_func(struct fsck_options *o UNUSED,
const struct object_id *oid,
enum object_type object_type,
enum fsck_msg_type msg_type,
enum fsck_msg_id msg_id UNUSED,
const char *message)
{
switch (msg_type) {
case FSCK_WARN:
/* TRANSLATORS: e.g. warning in tree 01bfda: <more explanation> */
fprintf_ln(stderr, _("warning in %s %s: %s"),
printable_type(oid, object_type),
describe_object(oid), message);
return 0;
case FSCK_ERROR:
/* TRANSLATORS: e.g. error in tree 01bfda: <more explanation> */
fprintf_ln(stderr, _("error in %s %s: %s"),
printable_type(oid, object_type),
describe_object(oid), message);
return 1;
default:
BUG("%d (FSCK_IGNORE?) should never trigger this callback",
msg_type);
}
}
static struct object_array pending;
static int mark_object(struct object *obj, enum object_type type,
void *data, struct fsck_options *options UNUSED)
{
struct object *parent = data;
/*
* The only case data is NULL or type is OBJ_ANY is when
* mark_object_reachable() calls us. All the callers of
* that function has non-NULL obj hence ...
*/
if (!obj) {
/* ... these references to parent->fld are safe here */
printf_ln(_("broken link from %7s %s"),
printable_type(&parent->oid, parent->type),
describe_object(&parent->oid));
printf_ln(_("broken link from %7s %s"),
(type == OBJ_ANY ? _("unknown") : type_name(type)),
_("unknown"));
errors_found |= ERROR_REACHABLE;
return 1;
}
if (type != OBJ_ANY && obj->type != type)
/* ... and the reference to parent is safe here */
objerror(parent, _("wrong object type in link"));
if (obj->flags & REACHABLE)
return 0;
obj->flags |= REACHABLE;
if (is_promisor_object(&obj->oid))
/*
* Further recursion does not need to be performed on this
* object since it is a promisor object (so it does not need to
* be added to "pending").
*/
return 0;
if (!(obj->flags & HAS_OBJ)) {
if (parent && !has_object(the_repository, &obj->oid, 1)) {
printf_ln(_("broken link from %7s %s\n"
" to %7s %s"),
printable_type(&parent->oid, parent->type),
describe_object(&parent->oid),
printable_type(&obj->oid, obj->type),
describe_object(&obj->oid));
errors_found |= ERROR_REACHABLE;
}
return 1;
}
add_object_array(obj, NULL, &pending);
return 0;
}
static void mark_object_reachable(struct object *obj)
{
mark_object(obj, OBJ_ANY, NULL, NULL);
}
static int traverse_one_object(struct object *obj)
{
int result = fsck_walk(obj, obj, &fsck_walk_options);
if (obj->type == OBJ_TREE) {
struct tree *tree = (struct tree *)obj;
free_tree_buffer(tree);
}
return result;
}
static int traverse_reachable(void)
{
struct progress *progress = NULL;
unsigned int nr = 0;
int result = 0;
if (show_progress)
progress = start_delayed_progress(_("Checking connectivity"), 0);
while (pending.nr) {
result |= traverse_one_object(object_array_pop(&pending));
display_progress(progress, ++nr);
}
stop_progress(&progress);
return !!result;
}
static int mark_used(struct object *obj, enum object_type type UNUSED,
void *data UNUSED, struct fsck_options *options UNUSED)
{
if (!obj)
return 1;
obj->flags |= USED;
return 0;
}
static void mark_unreachable_referents(const struct object_id *oid)
{
struct fsck_options options = FSCK_OPTIONS_DEFAULT;
struct object *obj = lookup_object(the_repository, oid);
if (!obj || !(obj->flags & HAS_OBJ))
return; /* not part of our original set */
if (obj->flags & REACHABLE)
return; /* reachable objects already traversed */
/*
* Avoid passing OBJ_NONE to fsck_walk, which will parse the object
* (and we want to avoid parsing blobs).
*/
if (obj->type == OBJ_NONE) {
enum object_type type = oid_object_info(the_repository,
&obj->oid, NULL);
if (type > 0)
object_as_type(obj, type, 0);
}
options.walk = mark_used;
fsck_walk(obj, NULL, &options);
if (obj->type == OBJ_TREE)
free_tree_buffer((struct tree *)obj);
}
static int mark_loose_unreachable_referents(const struct object_id *oid,
const char *path UNUSED,
void *data UNUSED)
{
mark_unreachable_referents(oid);
return 0;
}
static int mark_packed_unreachable_referents(const struct object_id *oid,
struct packed_git *pack UNUSED,
uint32_t pos UNUSED,
void *data UNUSED)
{
mark_unreachable_referents(oid);
return 0;
}
/*
* Check a single reachable object
*/
static void check_reachable_object(struct object *obj)
{
/*
* We obviously want the object to be parsed,
* except if it was in a pack-file and we didn't
* do a full fsck
*/
if (!(obj->flags & HAS_OBJ)) {
if (is_promisor_object(&obj->oid))
return;
if (has_object_pack(&obj->oid))
return; /* it is in pack - forget about it */
printf_ln(_("missing %s %s"),
printable_type(&obj->oid, obj->type),
describe_object(&obj->oid));
errors_found |= ERROR_REACHABLE;
return;
}
}
/*
* Check a single unreachable object
*/
static void check_unreachable_object(struct object *obj)
{
/*
* Missing unreachable object? Ignore it. It's not like
* we miss it (since it can't be reached), nor do we want
* to complain about it being unreachable (since it does
* not exist).
*/
if (!(obj->flags & HAS_OBJ))
return;
/*
* Unreachable object that exists? Show it if asked to,
* since this is something that is prunable.
*/
if (show_unreachable) {
printf_ln(_("unreachable %s %s"),
printable_type(&obj->oid, obj->type),
describe_object(&obj->oid));
return;
}
/*
* "!USED" means that nothing at all points to it, including
* other unreachable objects. In other words, it's the "tip"
* of some set of unreachable objects, usually a commit that
* got dropped.
*
* Such starting points are more interesting than some random
* set of unreachable objects, so we show them even if the user
* hasn't asked for _all_ unreachable objects. If you have
* deleted a branch by mistake, this is a prime candidate to
* start looking at, for example.
*/
if (!(obj->flags & USED)) {
if (show_dangling)
printf_ln(_("dangling %s %s"),
printable_type(&obj->oid, obj->type),
describe_object(&obj->oid));
if (write_lost_and_found) {
char *filename = git_pathdup("lost-found/%s/%s",
obj->type == OBJ_COMMIT ? "commit" : "other",
describe_object(&obj->oid));
FILE *f;
if (safe_create_leading_directories_const(filename)) {
error(_("could not create lost-found"));
free(filename);
return;
}
f = xfopen(filename, "w");
if (obj->type == OBJ_BLOB) {
if (stream_blob_to_fd(fileno(f), &obj->oid, NULL, 1))
die_errno(_("could not write '%s'"), filename);
} else
fprintf(f, "%s\n", describe_object(&obj->oid));
if (fclose(f))
die_errno(_("could not finish '%s'"),
filename);
free(filename);
}
return;
}
/*
* Otherwise? It's there, it's unreachable, and some other unreachable
* object points to it. Ignore it - it's not interesting, and we showed
* all the interesting cases above.
*/
}
static void check_object(struct object *obj)
{
if (verbose)
fprintf_ln(stderr, _("Checking %s"), describe_object(&obj->oid));
if (obj->flags & REACHABLE)
check_reachable_object(obj);
else
check_unreachable_object(obj);
}
static void check_connectivity(void)
{
int i, max;
/* Traverse the pending reachable objects */
traverse_reachable();
/*
* With --connectivity-only, we won't have actually opened and marked
* unreachable objects with USED. Do that now to make --dangling, etc
* accurate.
*/
if (connectivity_only && (show_dangling || write_lost_and_found)) {
/*
* Even though we already have a "struct object" for each of
* these in memory, we must not iterate over the internal
* object hash as we do below. Our loop would potentially
* resize the hash, making our iteration invalid.
*
* Instead, we'll just go back to the source list of objects,
* and ignore any that weren't present in our earlier
* traversal.
*/
for_each_loose_object(mark_loose_unreachable_referents, NULL, 0);
for_each_packed_object(mark_packed_unreachable_referents, NULL, 0);
}
/* Look up all the requirements, warn about missing objects.. */
max = get_max_object_index();
if (verbose)
fprintf_ln(stderr, _("Checking connectivity (%d objects)"), max);
for (i = 0; i < max; i++) {
struct object *obj = get_indexed_object(i);
if (obj)
check_object(obj);
}
}
static int fsck_obj(struct object *obj, void *buffer, unsigned long size)
{
int err;
if (obj->flags & SEEN)
return 0;
obj->flags |= SEEN;
if (verbose)
fprintf_ln(stderr, _("Checking %s %s"),
printable_type(&obj->oid, obj->type),
describe_object(&obj->oid));
if (fsck_walk(obj, NULL, &fsck_obj_options))
objerror(obj, _("broken links"));
err = fsck_object(obj, buffer, size, &fsck_obj_options);
if (err)
goto out;
if (obj->type == OBJ_COMMIT) {
struct commit *commit = (struct commit *) obj;
if (!commit->parents && show_root)
printf_ln(_("root %s"),
describe_object(&commit->object.oid));
}
if (obj->type == OBJ_TAG) {
struct tag *tag = (struct tag *) obj;
if (show_tags && tag->tagged) {
printf_ln(_("tagged %s %s (%s) in %s"),
printable_type(&tag->tagged->oid, tag->tagged->type),
describe_object(&tag->tagged->oid),
tag->tag,
describe_object(&tag->object.oid));
}
}
out:
if (obj->type == OBJ_TREE)
free_tree_buffer((struct tree *)obj);
return err;
}
static int fsck_obj_buffer(const struct object_id *oid, enum object_type type,
unsigned long size, void *buffer, int *eaten)
{
/*
* Note, buffer may be NULL if type is OBJ_BLOB. See
* verify_packfile(), data_valid variable for details.
*/
struct object *obj;
obj = parse_object_buffer(the_repository, oid, type, size, buffer,
eaten);
if (!obj) {
errors_found |= ERROR_OBJECT;
return error(_("%s: object corrupt or missing"),
oid_to_hex(oid));
}
obj->flags &= ~(REACHABLE | SEEN);
obj->flags |= HAS_OBJ;
return fsck_obj(obj, buffer, size);
}
static int default_refs;
static void fsck_handle_reflog_oid(const char *refname, struct object_id *oid,
timestamp_t timestamp)
{
struct object *obj;
if (!is_null_oid(oid)) {
obj = lookup_object(the_repository, oid);
if (obj && (obj->flags & HAS_OBJ)) {
if (timestamp)
fsck_put_object_name(&fsck_walk_options, oid,
"%s@{%"PRItime"}",
refname, timestamp);
obj->flags |= USED;
mark_object_reachable(obj);
} else if (!is_promisor_object(oid)) {
error(_("%s: invalid reflog entry %s"),
refname, oid_to_hex(oid));
errors_found |= ERROR_REACHABLE;
}
}
}
static int fsck_handle_reflog_ent(struct object_id *ooid, struct object_id *noid,
const char *email UNUSED,
timestamp_t timestamp, int tz UNUSED,
const char *message UNUSED, void *cb_data)
{
const char *refname = cb_data;
if (verbose)
fprintf_ln(stderr, _("Checking reflog %s->%s"),
oid_to_hex(ooid), oid_to_hex(noid));
fsck_handle_reflog_oid(refname, ooid, 0);
fsck_handle_reflog_oid(refname, noid, timestamp);
return 0;
}
static int fsck_handle_reflog(const char *logname, void *cb_data)
{
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;
}
static int fsck_handle_ref(const char *refname, const struct object_id *oid,
int flag UNUSED, void *cb_data UNUSED)
{
struct object *obj;
obj = parse_object(the_repository, oid);
if (!obj) {
if (is_promisor_object(oid)) {
/*
* Increment default_refs anyway, because this is a
* valid ref.
*/
default_refs++;
return 0;
}
error(_("%s: invalid sha1 pointer %s"),
refname, oid_to_hex(oid));
errors_found |= ERROR_REACHABLE;
/* We'll continue with the rest despite the error.. */
return 0;
}
if (obj->type != OBJ_COMMIT && is_branch(refname)) {
error(_("%s: not a commit"), refname);
errors_found |= ERROR_REFS;
}
default_refs++;
obj->flags |= USED;
fsck_put_object_name(&fsck_walk_options,
oid, "%s", refname);
mark_object_reachable(obj);
return 0;
}
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;
for_each_rawref(fsck_handle_ref, NULL);
worktrees = get_worktrees();
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
* it does mean that "--unreachable" no longer makes any
* sense (since in this case everything will obviously
* be unreachable by definition.
*
* Showing dangling objects is valid, though (as those
* dangling objects are likely lost heads).
*
* So we just print a warning about it, and clear the
* "show_unreachable" flag.
*/
if (!default_refs) {
fprintf_ln(stderr, _("notice: No default references"));
show_unreachable = 0;
}
}
struct for_each_loose_cb
{
struct progress *progress;
struct strbuf obj_type;
};
static int fsck_loose(const struct object_id *oid, const char *path, void *data)
{
struct for_each_loose_cb *cb_data = data;
struct object *obj;
enum object_type type = OBJ_NONE;
unsigned long size;
void *contents = NULL;
int eaten;
struct object_info oi = OBJECT_INFO_INIT;
struct object_id real_oid = *null_oid();
int err = 0;
strbuf_reset(&cb_data->obj_type);
oi.type_name = &cb_data->obj_type;
oi.sizep = &size;
oi.typep = &type;
if (read_loose_object(path, oid, &real_oid, &contents, &oi) < 0) {
if (contents && !oideq(&real_oid, oid))
err = error(_("%s: hash-path mismatch, found at: %s"),
oid_to_hex(&real_oid), path);
else
err = error(_("%s: object corrupt or missing: %s"),
oid_to_hex(oid), path);
}
if (type != OBJ_NONE && type < 0)
err = error(_("%s: object is of unknown type '%s': %s"),
oid_to_hex(&real_oid), cb_data->obj_type.buf,
path);
if (err < 0) {
errors_found |= ERROR_OBJECT;
free(contents);
return 0; /* keep checking other objects */
}
if (!contents && type != OBJ_BLOB)
BUG("read_loose_object streamed a non-blob");
obj = parse_object_buffer(the_repository, oid, type, size,
contents, &eaten);
if (!obj) {
errors_found |= ERROR_OBJECT;
error(_("%s: object could not be parsed: %s"),
oid_to_hex(oid), path);
if (!eaten)
free(contents);
return 0; /* keep checking other objects */
}
obj->flags &= ~(REACHABLE | SEEN);
obj->flags |= HAS_OBJ;
if (fsck_obj(obj, contents, size))
errors_found |= ERROR_OBJECT;
if (!eaten)
free(contents);
return 0; /* keep checking other objects, even if we saw an error */
}
static int fsck_cruft(const char *basename, const char *path,
void *data UNUSED)
{
if (!starts_with(basename, "tmp_obj_"))
fprintf_ln(stderr, _("bad sha1 file: %s"), path);
return 0;
}
static int fsck_subdir(unsigned int nr, const char *path UNUSED, void *data)
{
struct for_each_loose_cb *cb_data = data;
struct progress *progress = cb_data->progress;
display_progress(progress, nr + 1);
return 0;
}
static void fsck_object_dir(const char *path)
{
struct progress *progress = NULL;
struct for_each_loose_cb cb_data = {
.obj_type = STRBUF_INIT,
.progress = progress,
};
if (verbose)
fprintf_ln(stderr, _("Checking object directory"));
if (show_progress)
progress = start_progress(_("Checking object directories"), 256);
for_each_loose_file_in_objdir(path, fsck_loose, fsck_cruft, fsck_subdir,
&cb_data);
display_progress(progress, 256);
stop_progress(&progress);
strbuf_release(&cb_data.obj_type);
}
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_ln(stderr, _("Checking %s link"), head_ref_name);
*head_points_at = resolve_ref_unsafe(head_ref_name, 0, head_oid, NULL);
if (!*head_points_at) {
errors_found |= ERROR_REFS;
return error(_("invalid %s"), head_ref_name);
}
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(_("%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(_("%s: detached HEAD points at nothing"),
head_ref_name);
}
fprintf_ln(stderr,
_("notice: %s points to an unborn branch (%s)"),
head_ref_name, *head_points_at + 11);
}
return 0;
}
static int fsck_cache_tree(struct cache_tree *it, const char *index_path)
{
int i;
int err = 0;
if (verbose)
fprintf_ln(stderr, _("Checking cache tree of %s"), index_path);
if (0 <= it->entry_count) {
struct object *obj = parse_object(the_repository, &it->oid);
if (!obj) {
error(_("%s: invalid sha1 pointer in cache-tree of %s"),
oid_to_hex(&it->oid), index_path);
errors_found |= ERROR_REFS;
return 1;
}
obj->flags |= USED;
fsck_put_object_name(&fsck_walk_options, &it->oid, ":");
mark_object_reachable(obj);
if (obj->type != OBJ_TREE)
err |= objerror(obj, _("non-tree in cache-tree"));
}
for (i = 0; i < it->subtree_nr; i++)
err |= fsck_cache_tree(it->down[i]->cache_tree, index_path);
return err;
}
static int fsck_resolve_undo(struct index_state *istate,
const char *index_path)
{
struct string_list_item *item;
struct string_list *resolve_undo = istate->resolve_undo;
if (!resolve_undo)
return 0;
for_each_string_list_item(item, resolve_undo) {
const char *path = item->string;
struct resolve_undo_info *ru = item->util;
int i;
if (!ru)
continue;
for (i = 0; i < 3; i++) {
struct object *obj;
if (!ru->mode[i] || !S_ISREG(ru->mode[i]))
continue;
obj = parse_object(the_repository, &ru->oid[i]);
if (!obj) {
error(_("%s: invalid sha1 pointer in resolve-undo of %s"),
oid_to_hex(&ru->oid[i]),
index_path);
errors_found |= ERROR_REFS;
continue;
}
obj->flags |= USED;
fsck_put_object_name(&fsck_walk_options, &ru->oid[i],
":(%d):%s", i, path);
mark_object_reachable(obj);
}
}
return 0;
}
static void fsck_index(struct index_state *istate, const char *index_path,
int is_current_worktree)
{
unsigned int i;
/* TODO: audit for interaction with sparse-index. */
ensure_full_index(istate);
for (i = 0; i < istate->cache_nr; i++) {
unsigned int mode;
struct blob *blob;
struct object *obj;
mode = istate->cache[i]->ce_mode;
if (S_ISGITLINK(mode))
continue;
blob = lookup_blob(the_repository,
&istate->cache[i]->oid);
if (!blob)
continue;
obj = &blob->object;
obj->flags |= USED;
fsck_put_object_name(&fsck_walk_options, &obj->oid,
"%s:%s",
is_current_worktree ? "" : index_path,
istate->cache[i]->name);
mark_object_reachable(obj);
}
if (istate->cache_tree)
fsck_cache_tree(istate->cache_tree, index_path);
fsck_resolve_undo(istate, index_path);
}
static void mark_object_for_connectivity(const struct object_id *oid)
{
struct object *obj = lookup_unknown_object(the_repository, oid);
obj->flags |= HAS_OBJ;
}
static int mark_loose_for_connectivity(const struct object_id *oid,
const char *path UNUSED,
void *data UNUSED)
{
mark_object_for_connectivity(oid);
return 0;
}
static int mark_packed_for_connectivity(const struct object_id *oid,
struct packed_git *pack UNUSED,
uint32_t pos UNUSED,
void *data UNUSED)
{
mark_object_for_connectivity(oid);
return 0;
}
static int check_pack_rev_indexes(struct repository *r, int show_progress)
{
struct progress *progress = NULL;
uint32_t pack_count = 0;
int res = 0;
if (show_progress) {
for (struct packed_git *p = get_all_packs(r); p; p = p->next)
pack_count++;
progress = start_delayed_progress("Verifying reverse pack-indexes", pack_count);
pack_count = 0;
}
for (struct packed_git *p = get_all_packs(r); p; p = p->next) {
int load_error = load_pack_revindex_from_disk(p);
if (load_error < 0) {
error(_("unable to load rev-index for pack '%s'"), p->pack_name);
res = ERROR_PACK_REV_INDEX;
} else if (!load_error &&
!load_pack_revindex(r, p) &&
verify_pack_revindex(p)) {
error(_("invalid rev-index for pack '%s'"), p->pack_name);
res = ERROR_PACK_REV_INDEX;
}
display_progress(progress, ++pack_count);
}
stop_progress(&progress);
return res;
}
static char const * const fsck_usage[] = {
N_("git fsck [--tags] [--root] [--unreachable] [--cache] [--no-reflogs]\n"
" [--[no-]full] [--strict] [--verbose] [--lost-found]\n"
" [--[no-]dangling] [--[no-]progress] [--connectivity-only]\n"
" [--[no-]name-objects] [<object>...]"),
NULL
};
static struct option fsck_opts[] = {
OPT__VERBOSE(&verbose, N_("be verbose")),
OPT_BOOL(0, "unreachable", &show_unreachable, N_("show unreachable objects")),
OPT_BOOL(0, "dangling", &show_dangling, N_("show dangling objects")),
OPT_BOOL(0, "tags", &show_tags, N_("report tags")),
OPT_BOOL(0, "root", &show_root, N_("report root nodes")),
OPT_BOOL(0, "cache", &keep_cache_objects, N_("make index objects head nodes")),
OPT_BOOL(0, "reflogs", &include_reflogs, N_("make reflogs head nodes (default)")),
OPT_BOOL(0, "full", &check_full, N_("also consider packs and alternate objects")),
OPT_BOOL(0, "connectivity-only", &connectivity_only, N_("check only connectivity")),
OPT_BOOL(0, "strict", &check_strict, N_("enable more strict checking")),
OPT_BOOL(0, "lost-found", &write_lost_and_found,
N_("write dangling objects in .git/lost-found")),
OPT_BOOL(0, "progress", &show_progress, N_("show progress")),
OPT_BOOL(0, "name-objects", &name_objects, N_("show verbose names for reachable objects")),
OPT_END(),
};
int cmd_fsck(int argc, const char **argv, const char *prefix)
{
int i;
struct object_directory *odb;
/* fsck knows how to handle missing promisor objects */
fetch_if_missing = 0;
errors_found = 0;
disable_replace_refs();
save_commit_buffer = 0;
argc = parse_options(argc, argv, prefix, fsck_opts, fsck_usage, 0);
fsck_walk_options.walk = mark_object;
fsck_obj_options.walk = mark_used;
fsck_obj_options.error_func = fsck_error_func;
if (check_strict)
fsck_obj_options.strict = 1;
if (show_progress == -1)
show_progress = isatty(2);
if (verbose)
show_progress = 0;
if (write_lost_and_found) {
check_full = 1;
include_reflogs = 0;
}
if (name_objects)
fsck_enable_object_names(&fsck_walk_options);
git_config(git_fsck_config, &fsck_obj_options);
prepare_repo_settings(the_repository);
if (connectivity_only) {
for_each_loose_object(mark_loose_for_connectivity, NULL, 0);
for_each_packed_object(mark_packed_for_connectivity, NULL, 0);
} else {
prepare_alt_odb(the_repository);
for (odb = the_repository->objects->odb; odb; odb = odb->next)
fsck_object_dir(odb->path);
if (check_full) {
struct packed_git *p;
uint32_t total = 0, count = 0;
struct progress *progress = NULL;
if (show_progress) {
for (p = get_all_packs(the_repository); p;
p = p->next) {
if (open_pack_index(p))
continue;
total += p->num_objects;
}
progress = start_progress(_("Checking objects"), total);
}
for (p = get_all_packs(the_repository); p;
p = p->next) {
/* verify gives error messages itself */
if (verify_pack(the_repository,
p, fsck_obj_buffer,
progress, count))
errors_found |= ERROR_PACK;
count += p->num_objects;
}
stop_progress(&progress);
}
if (fsck_finish(&fsck_obj_options))
errors_found |= ERROR_OBJECT;
}
for (i = 0; i < argc; i++) {
const char *arg = argv[i];
struct object_id oid;
if (!repo_get_oid(the_repository, arg, &oid)) {
struct object *obj = lookup_object(the_repository,
&oid);
if (!obj || !(obj->flags & HAS_OBJ)) {
if (is_promisor_object(&oid))
continue;
error(_("%s: object missing"), oid_to_hex(&oid));
errors_found |= ERROR_OBJECT;
continue;
}
obj->flags |= USED;
fsck_put_object_name(&fsck_walk_options, &oid,
"%s", arg);
mark_object_reachable(obj);
continue;
}
error(_("invalid parameter: expected sha1, got '%s'"), arg);
errors_found |= ERROR_OBJECT;
}
/*
* If we've not been given any explicit head information, do the
* default ones from .git/refs. We also consider the index file
* in this case (ie this implies --cache).
*/
if (!argc) {
get_default_heads();
keep_cache_objects = 1;
}
if (keep_cache_objects) {
struct worktree **worktrees, **p;
verify_index_checksum = 1;
verify_ce_order = 1;
worktrees = get_worktrees();
for (p = worktrees; *p; p++) {
struct worktree *wt = *p;
struct index_state istate =
INDEX_STATE_INIT(the_repository);
char *path;
/*
* Make a copy since the buffer is reusable
* and may get overwritten by other calls
* while we're examining the index.
*/
path = xstrdup(worktree_git_path(wt, "index"));
read_index_from(&istate, path, get_worktree_git_dir(wt));
fsck_index(&istate, path, wt->is_current);
discard_index(&istate);
free(path);
}
free_worktrees(worktrees);
}
errors_found |= check_pack_rev_indexes(the_repository, show_progress);
if (verify_bitmap_files(the_repository))
errors_found |= ERROR_BITMAP;
check_connectivity();
if (the_repository->settings.core_commit_graph) {
struct child_process commit_graph_verify = CHILD_PROCESS_INIT;
prepare_alt_odb(the_repository);
for (odb = the_repository->objects->odb; odb; odb = odb->next) {
child_process_init(&commit_graph_verify);
commit_graph_verify.git_cmd = 1;
strvec_pushl(&commit_graph_verify.args, "commit-graph",
"verify", "--object-dir", odb->path, NULL);
if (show_progress)
strvec_push(&commit_graph_verify.args, "--progress");
else
strvec_push(&commit_graph_verify.args, "--no-progress");
if (run_command(&commit_graph_verify))
errors_found |= ERROR_COMMIT_GRAPH;
}
}
if (the_repository->settings.core_multi_pack_index) {
struct child_process midx_verify = CHILD_PROCESS_INIT;
prepare_alt_odb(the_repository);
for (odb = the_repository->objects->odb; odb; odb = odb->next) {
child_process_init(&midx_verify);
midx_verify.git_cmd = 1;
strvec_pushl(&midx_verify.args, "multi-pack-index",
"verify", "--object-dir", odb->path, NULL);
if (show_progress)
strvec_push(&midx_verify.args, "--progress");
else
strvec_push(&midx_verify.args, "--no-progress");
if (run_command(&midx_verify))
errors_found |= ERROR_MULTI_PACK_INDEX;
}
}
return errors_found;
}