+/* Is this log iovec plausibly large enough to contain the buffer log format? */
+bool
+xfs_buf_log_check_iovec(
+ struct xfs_log_iovec *iovec)
+{
+ struct xfs_buf_log_format *blfp = iovec->i_addr;
+ char *bmp_end;
+ char *item_end;
+
+ if (offsetof(struct xfs_buf_log_format, blf_data_map) > iovec->i_len)
+ return false;
+
+ item_end = (char *)iovec->i_addr + iovec->i_len;
+ bmp_end = (char *)&blfp->blf_data_map[blfp->blf_map_size];
+ return bmp_end <= item_end;
+}
+