+out:
+fsck_err:
+ return ret;
+}
+
+static int journal_entry_validate_usage(struct bch_fs *c,
+ struct jset *jset,
+ struct jset_entry *entry,
+ int write)
+{
+ struct jset_entry_usage *u =
+ container_of(entry, struct jset_entry_usage, entry);
+ unsigned bytes = jset_u64s(le16_to_cpu(entry->u64s)) * sizeof(u64);
+ int ret = 0;
+
+ if (journal_entry_err_on(bytes < sizeof(*u),
+ c,
+ "invalid journal entry usage: bad size")) {
+ journal_entry_null_range(entry, vstruct_next(entry));
+ return ret;
+ }
+
+fsck_err:
+ return ret;
+}
+
+static int journal_entry_validate_data_usage(struct bch_fs *c,
+ struct jset *jset,
+ struct jset_entry *entry,
+ int write)
+{
+ struct jset_entry_data_usage *u =
+ container_of(entry, struct jset_entry_data_usage, entry);
+ unsigned bytes = jset_u64s(le16_to_cpu(entry->u64s)) * sizeof(u64);
+ int ret = 0;
+
+ if (journal_entry_err_on(bytes < sizeof(*u) ||
+ bytes < sizeof(*u) + u->r.nr_devs,
+ c,
+ "invalid journal entry usage: bad size")) {
+ journal_entry_null_range(entry, vstruct_next(entry));
+ return ret;
+ }
+
+fsck_err:
+ return ret;
+}
+
+static int journal_entry_validate_clock(struct bch_fs *c,
+ struct jset *jset,
+ struct jset_entry *entry,
+ int write)
+{
+ struct jset_entry_clock *clock =
+ container_of(entry, struct jset_entry_clock, entry);
+ unsigned bytes = jset_u64s(le16_to_cpu(entry->u64s)) * sizeof(u64);
+ int ret = 0;
+
+ if (journal_entry_err_on(bytes != sizeof(*clock),
+ c, "invalid journal entry clock: bad size")) {
+ journal_entry_null_range(entry, vstruct_next(entry));
+ return ret;
+ }
+
+ if (journal_entry_err_on(clock->rw > 1,
+ c, "invalid journal entry clock: bad rw")) {
+ journal_entry_null_range(entry, vstruct_next(entry));
+ return ret;
+ }
+
+fsck_err:
+ return ret;
+}
+
+static int journal_entry_validate_dev_usage(struct bch_fs *c,
+ struct jset *jset,
+ struct jset_entry *entry,
+ int write)
+{
+ struct jset_entry_dev_usage *u =
+ container_of(entry, struct jset_entry_dev_usage, entry);
+ unsigned bytes = jset_u64s(le16_to_cpu(entry->u64s)) * sizeof(u64);
+ unsigned expected = sizeof(*u) + sizeof(u->d[0]) * 7; /* Current value of BCH_DATA_NR */
+ unsigned dev;
+ int ret = 0;
+
+ if (journal_entry_err_on(bytes < expected,
+ c, "invalid journal entry dev usage: bad size (%u < %u)",
+ bytes, expected)) {
+ journal_entry_null_range(entry, vstruct_next(entry));
+ return ret;
+ }
+
+ dev = le32_to_cpu(u->dev);
+
+ if (journal_entry_err_on(!bch2_dev_exists2(c, dev),
+ c, "invalid journal entry dev usage: bad dev")) {
+ journal_entry_null_range(entry, vstruct_next(entry));
+ return ret;
+ }
+
+ if (journal_entry_err_on(u->pad,
+ c, "invalid journal entry dev usage: bad pad")) {
+ journal_entry_null_range(entry, vstruct_next(entry));
+ return ret;
+ }