+static int entry_points_to_data(
+ JournalFile *f,
+ int entry_fd,
+ uint64_t n_entries,
+ uint64_t entry_p,
+ uint64_t data_p) {
+
+ int r;
+ uint64_t i, n, a;
+ Object *o;
+ bool found = false;
+
+ assert(f);
+ assert(entry_fd >= 0);
+
+ if (!contains_uint64(f->mmap, entry_fd, n_entries, entry_p)) {
+ error(data_p,
+ "data object references invalid entry at "OFSfmt, entry_p);
+ return -EBADMSG;
+ }
+
+ r = journal_file_move_to_object(f, OBJECT_ENTRY, entry_p, &o);
+ if (r < 0)
+ return r;
+
+ n = journal_file_entry_n_items(o);
+ for (i = 0; i < n; i++)
+ if (le64toh(o->entry.items[i].object_offset) == data_p) {
+ found = true;
+ break;
+ }
+
+ if (!found) {
+ error(entry_p,
+ "data object at "OFSfmt" not referenced by linked entry", data_p);
+ return -EBADMSG;
+ }
+
+ /* Check if this entry is also in main entry array. Since the
+ * main entry array has already been verified we can rely on
+ * its consistency.*/
+
+ i = 0;
+ n = le64toh(f->header->n_entries);
+ a = le64toh(f->header->entry_array_offset);
+
+ while (i < n) {
+ uint64_t m, u;
+
+ r = journal_file_move_to_object(f, OBJECT_ENTRY_ARRAY, a, &o);
+ if (r < 0)
+ return r;
+
+ m = journal_file_entry_array_n_items(o);
+ u = MIN(n - i, m);
+
+ if (entry_p <= le64toh(o->entry_array.items[u-1])) {
+ uint64_t x, y, z;
+
+ x = 0;
+ y = u;
+
+ while (x < y) {
+ z = (x + y) / 2;
+
+ if (le64toh(o->entry_array.items[z]) == entry_p)
+ return 0;
+
+ if (x + 1 >= y)
+ break;
+
+ if (entry_p < le64toh(o->entry_array.items[z]))
+ y = z;
+ else
+ x = z;
+ }
+
+ error(entry_p, "entry object doesn't exist in main entry array");
+ return -EBADMSG;
+ }
+
+ i += u;
+ a = le64toh(o->entry_array.next_entry_array_offset);
+ }
+
+ return 0;
+}
+
+static int verify_data(
+ JournalFile *f,
+ Object *o, uint64_t p,
+ int entry_fd, uint64_t n_entries,
+ int entry_array_fd, uint64_t n_entry_arrays) {
+
+ uint64_t i, n, a, last, q;
+ int r;
+
+ assert(f);
+ assert(o);
+ assert(entry_fd >= 0);
+ assert(entry_array_fd >= 0);
+
+ n = le64toh(o->data.n_entries);
+ a = le64toh(o->data.entry_array_offset);
+
+ /* Entry array means at least two objects */
+ if (a && n < 2) {
+ error(p,
+ "entry array present (entry_array_offset="OFSfmt", but n_entries=%"PRIu64")",
+ a, n);
+ return -EBADMSG;
+ }
+
+ if (n == 0)
+ return 0;
+
+ /* We already checked that earlier */
+ assert(o->data.entry_offset);
+
+ last = q = le64toh(o->data.entry_offset);
+ r = entry_points_to_data(f, entry_fd, n_entries, q, p);
+ if (r < 0)
+ return r;
+
+ i = 1;
+ while (i < n) {
+ uint64_t next, m, j;
+
+ if (a == 0) {
+ error(p, "array chain too short");
+ return -EBADMSG;
+ }
+
+ if (!contains_uint64(f->mmap, entry_array_fd, n_entry_arrays, a)) {
+ error(p, "invalid array offset "OFSfmt, a);
+ return -EBADMSG;
+ }
+
+ r = journal_file_move_to_object(f, OBJECT_ENTRY_ARRAY, a, &o);
+ if (r < 0)
+ return r;
+
+ next = le64toh(o->entry_array.next_entry_array_offset);
+ if (next != 0 && next <= a) {
+ error(p, "array chain has cycle (jumps back from "OFSfmt" to "OFSfmt")",
+ a, next);
+ return -EBADMSG;
+ }
+
+ m = journal_file_entry_array_n_items(o);
+ for (j = 0; i < n && j < m; i++, j++) {
+
+ q = le64toh(o->entry_array.items[j]);
+ if (q <= last) {
+ error(p, "data object's entry array not sorted");
+ return -EBADMSG;
+ }
+ last = q;
+
+ r = entry_points_to_data(f, entry_fd, n_entries, q, p);
+ if (r < 0)
+ return r;
+
+ /* Pointer might have moved, reposition */
+ r = journal_file_move_to_object(f, OBJECT_ENTRY_ARRAY, a, &o);
+ if (r < 0)
+ return r;
+ }
+
+ a = next;
+ }
+
+ return 0;
+}
+
+static int verify_hash_table(
+ JournalFile *f,
+ int data_fd, uint64_t n_data,
+ int entry_fd, uint64_t n_entries,
+ int entry_array_fd, uint64_t n_entry_arrays,
+ usec_t *last_usec,
+ bool show_progress) {
+
+ uint64_t i, n;
+ int r;
+
+ assert(f);
+ assert(data_fd >= 0);
+ assert(entry_fd >= 0);
+ assert(entry_array_fd >= 0);
+ assert(last_usec);
+
+ n = le64toh(f->header->data_hash_table_size) / sizeof(HashItem);
+ for (i = 0; i < n; i++) {
+ uint64_t last = 0, p;
+
+ if (show_progress)
+ draw_progress(0xC000 + (0x3FFF * i / n), last_usec);
+
+ p = le64toh(f->data_hash_table[i].head_hash_offset);
+ while (p != 0) {
+ Object *o;
+ uint64_t next;
+
+ if (!contains_uint64(f->mmap, data_fd, n_data, p)) {
+ error(p, "invalid data object at hash entry %"PRIu64" of %"PRIu64,
+ i, n);
+ return -EBADMSG;
+ }
+
+ r = journal_file_move_to_object(f, OBJECT_DATA, p, &o);
+ if (r < 0)
+ return r;
+
+ next = le64toh(o->data.next_hash_offset);
+ if (next != 0 && next <= p) {
+ error(p, "hash chain has a cycle in hash entry %"PRIu64" of %"PRIu64,
+ i, n);
+ return -EBADMSG;
+ }
+
+ if (le64toh(o->data.hash) % n != i) {
+ error(p, "hash value mismatch in hash entry %"PRIu64" of %"PRIu64,
+ i, n);
+ return -EBADMSG;
+ }
+
+ r = verify_data(f, o, p, entry_fd, n_entries, entry_array_fd, n_entry_arrays);
+ if (r < 0)
+ return r;
+
+ last = p;
+ p = next;
+ }
+
+ if (last != le64toh(f->data_hash_table[i].tail_hash_offset)) {
+ error(p, "tail hash pointer mismatch in hash table");
+ return -EBADMSG;
+ }
+ }
+
+ return 0;
+}
+
+static int data_object_in_hash_table(JournalFile *f, uint64_t hash, uint64_t p) {
+ uint64_t n, h, q;
+ int r;
+ assert(f);
+
+ n = le64toh(f->header->data_hash_table_size) / sizeof(HashItem);
+ h = hash % n;
+
+ q = le64toh(f->data_hash_table[h].head_hash_offset);
+ while (q != 0) {
+ Object *o;
+
+ if (p == q)
+ return 1;
+
+ r = journal_file_move_to_object(f, OBJECT_DATA, q, &o);
+ if (r < 0)
+ return r;
+
+ q = le64toh(o->data.next_hash_offset);
+ }
+
+ return 0;
+}
+
+static int verify_entry(
+ JournalFile *f,
+ Object *o, uint64_t p,
+ int data_fd, uint64_t n_data) {
+
+ uint64_t i, n;
+ int r;
+
+ assert(f);
+ assert(o);
+ assert(data_fd >= 0);
+
+ n = journal_file_entry_n_items(o);
+ for (i = 0; i < n; i++) {
+ uint64_t q, h;
+ Object *u;
+
+ q = le64toh(o->entry.items[i].object_offset);
+ h = le64toh(o->entry.items[i].hash);
+
+ if (!contains_uint64(f->mmap, data_fd, n_data, q)) {
+ error(p, "invalid data object of entry");
+ return -EBADMSG;
+ }
+
+ r = journal_file_move_to_object(f, OBJECT_DATA, q, &u);
+ if (r < 0)
+ return r;
+
+ if (le64toh(u->data.hash) != h) {
+ error(p, "hash mismatch for data object of entry");
+ return -EBADMSG;
+ }
+
+ r = data_object_in_hash_table(f, h, q);
+ if (r < 0)
+ return r;
+ if (r == 0) {
+ error(p, "data object missing from hash table");
+ return -EBADMSG;
+ }
+ }
+
+ return 0;
+}
+
+static int verify_entry_array(
+ JournalFile *f,
+ int data_fd, uint64_t n_data,
+ int entry_fd, uint64_t n_entries,
+ int entry_array_fd, uint64_t n_entry_arrays,
+ usec_t *last_usec,
+ bool show_progress) {
+
+ uint64_t i = 0, a, n, last = 0;
+ int r;
+
+ assert(f);
+ assert(data_fd >= 0);
+ assert(entry_fd >= 0);
+ assert(entry_array_fd >= 0);
+ assert(last_usec);
+
+ n = le64toh(f->header->n_entries);
+ a = le64toh(f->header->entry_array_offset);
+ while (i < n) {
+ uint64_t next, m, j;
+ Object *o;
+
+ if (show_progress)
+ draw_progress(0x8000 + (0x3FFF * i / n), last_usec);
+
+ if (a == 0) {
+ error(a, "array chain too short at %"PRIu64" of %"PRIu64, i, n);
+ return -EBADMSG;
+ }
+
+ if (!contains_uint64(f->mmap, entry_array_fd, n_entry_arrays, a)) {
+ error(a, "invalid array %"PRIu64" of %"PRIu64, i, n);
+ return -EBADMSG;
+ }
+
+ r = journal_file_move_to_object(f, OBJECT_ENTRY_ARRAY, a, &o);
+ if (r < 0)
+ return r;
+
+ next = le64toh(o->entry_array.next_entry_array_offset);
+ if (next != 0 && next <= a) {
+ error(a,
+ "array chain has cycle at %"PRIu64" of %"PRIu64" (jumps back from to "OFSfmt")",
+ i, n, next);
+ return -EBADMSG;
+ }
+
+ m = journal_file_entry_array_n_items(o);
+ for (j = 0; i < n && j < m; i++, j++) {
+ uint64_t p;
+
+ p = le64toh(o->entry_array.items[j]);
+ if (p <= last) {
+ error(a, "entry array not sorted at %"PRIu64" of %"PRIu64,
+ i, n);
+ return -EBADMSG;
+ }
+ last = p;
+
+ if (!contains_uint64(f->mmap, entry_fd, n_entries, p)) {
+ error(a, "invalid array entry at %"PRIu64" of %"PRIu64,
+ i, n);
+ return -EBADMSG;
+ }
+
+ r = journal_file_move_to_object(f, OBJECT_ENTRY, p, &o);
+ if (r < 0)
+ return r;
+
+ r = verify_entry(f, o, p, data_fd, n_data);
+ if (r < 0)
+ return r;
+
+ /* Pointer might have moved, reposition */
+ r = journal_file_move_to_object(f, OBJECT_ENTRY_ARRAY, a, &o);
+ if (r < 0)
+ return r;
+ }
+
+ a = next;
+ }
+
+ return 0;
+}
+
+int journal_file_verify(
+ JournalFile *f,
+ const char *key,
+ usec_t *first_contained, usec_t *last_validated, usec_t *last_contained,
+ bool show_progress) {