MBOX_BYTES_PER_LINE
MBOX_BYTES_PER_LINE,
MBOX_BYTES_PER_LINE, 1, touser + l,
ptr += MBOX_BYTES_PER_LINE;
#define MBOX_HEXDUMP_LINE_LEN ((MBOX_BYTES_PER_LINE * 4) + 2)
(MBOX_MAX_MSG_LEN / MBOX_BYTES_PER_LINE))