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-rw-r--r--builtin/fsck.c1018
1 files changed, 1018 insertions, 0 deletions
diff --git a/builtin/fsck.c b/builtin/fsck.c
new file mode 100644
index 0000000..d207bd9
--- /dev/null
+++ b/builtin/fsck.c
@@ -0,0 +1,1018 @@
+#define USE_THE_INDEX_VARIABLE
+#include "builtin.h"
+#include "cache.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 "tree-walk.h"
+#include "fsck.h"
+#include "parse-options.h"
+#include "dir.h"
+#include "progress.h"
+#include "streaming.h"
+#include "decorate.h"
+#include "packfile.h"
+#include "object-store.h"
+#include "resolve-undo.h"
+#include "run-command.h"
+#include "worktree.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
+
+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,
+ const struct object_id *oid,
+ enum object_type object_type,
+ enum fsck_msg_type msg_type,
+ enum fsck_msg_id msg_id,
+ 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)
+{
+ 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 object_type,
+ void *data, struct fsck_options *options)
+{
+ 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,
+ void *data)
+{
+ mark_unreachable_referents(oid);
+ return 0;
+}
+
+static int mark_packed_unreachable_referents(const struct object_id *oid,
+ struct packed_git *pack,
+ uint32_t pos,
+ void *data)
+{
+ 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,
+ const struct object_id *oid UNUSED,
+ int flag UNUSED, 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)
+{
+ 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, 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)
+{
+ int i;
+ int err = 0;
+
+ if (verbose)
+ fprintf_ln(stderr, _("Checking cache tree"));
+
+ if (0 <= it->entry_count) {
+ struct object *obj = parse_object(the_repository, &it->oid);
+ if (!obj) {
+ error(_("%s: invalid sha1 pointer in cache-tree"),
+ oid_to_hex(&it->oid));
+ 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);
+ return err;
+}
+
+static int fsck_resolve_undo(struct index_state *istate)
+{
+ 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"),
+ oid_to_hex(&ru->oid[i]));
+ 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 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,
+ void *data)
+{
+ mark_object_for_connectivity(oid);
+ return 0;
+}
+
+static int mark_packed_for_connectivity(const struct object_id *oid,
+ struct packed_git *pack,
+ uint32_t pos,
+ void *data)
+{
+ mark_object_for_connectivity(oid);
+ return 0;
+}
+
+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;
+ read_replace_refs = 0;
+ 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 (!get_oid(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) {
+ verify_index_checksum = 1;
+ verify_ce_order = 1;
+ repo_read_index(the_repository);
+ /* TODO: audit for interaction with sparse-index. */
+ ensure_full_index(&the_index);
+ for (i = 0; i < the_index.cache_nr; i++) {
+ unsigned int mode;
+ struct blob *blob;
+ struct object *obj;
+
+ mode = the_index.cache[i]->ce_mode;
+ if (S_ISGITLINK(mode))
+ continue;
+ blob = lookup_blob(the_repository,
+ &the_index.cache[i]->oid);
+ if (!blob)
+ continue;
+ obj = &blob->object;
+ obj->flags |= USED;
+ fsck_put_object_name(&fsck_walk_options, &obj->oid,
+ ":%s", the_index.cache[i]->name);
+ mark_object_reachable(obj);
+ }
+ if (the_index.cache_tree)
+ fsck_cache_tree(the_index.cache_tree);
+ fsck_resolve_undo(&the_index);
+ }
+
+ 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 (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 (run_command(&midx_verify))
+ errors_found |= ERROR_MULTI_PACK_INDEX;
+ }
+ }
+
+ return errors_found;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-03 09:42:33 +0000