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git/builtin/fsck.c

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#define USE_THE_REPOSITORY_VARIABLE
#include "builtin.h"
#include "gettext.h"
#include "hex.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_objects_error_func(struct fsck_options *o UNUSED,
void *fsck_report,
enum fsck_msg_type msg_type,
enum fsck_msg_id msg_id UNUSED,
const char *message)
{
struct fsck_object_report *report = fsck_report;
const struct object_id *oid = report->oid;
enum object_type object_type = report->object_type;
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(the_repository, &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(the_repository,
_("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(the_repository, &obj->oid))
return;
if (has_object_pack(the_repository, &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 = repo_git_path(the_repository, "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(the_repository,
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(the_repository, 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);
refs_for_each_reflog_ent(get_main_ref_store(the_repository),
refname.buf, fsck_handle_reflog_ent,
refname.buf);
strbuf_release(&refname);
return 0;
}
static int fsck_handle_ref(const char *refname, const char *referent UNUSED, 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(the_repository, 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;
refs_for_each_rawref(get_main_ref_store(the_repository),
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, NULL, &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(the_repository,
_("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 = refs_resolve_ref_unsafe(get_main_ref_store(the_repository),
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(the_repository,
"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,
struct repository *repo UNUSED)
{
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_objects_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(the_repository,
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(the_repository,
_("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(the_repository, &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, *wt_gitdir;
/*
* 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(the_repository, wt, "index"));
wt_gitdir = get_worktree_git_dir(wt);
read_index_from(&istate, path, wt_gitdir);
fsck_index(&istate, path, wt->is_current);
discard_index(&istate);
free(wt_gitdir);
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;
}
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