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Theorem add-log-leb

wbuf_add_log_leb#(LNUM, OFFSET, ROFS, PROOTADR, PMAXINO, PVOL, PLPT, PORPHANS; BUFLEB, WBUF, PLOG; ERR) {if ¬ ROFS → BUFLEB = buffered(LNUM) ∨ (BUFLEB = nobuffer ∨ WBUF.nbytes = 0) ∧ LNUM < # PVOL ∧ PVOL[LNUM].mapped? ∧ OFFSET = # PVOL[LNUM].data then if ROFS then ERR := EROFS else {apersistence_io_add_log_leb#(LNUM, PROOTADR, PMAXINO, PVOL, PLPT, PORPHANS; PLOG; ERR); if ERR = ESUCCESS then wbuf_move_buf#(LNUM, OFFSET, ROFS, PVOL; BUFLEB, WBUF; ERR)} else abort }