KMESSAGE_READ_ONLY
if ((flags & KMESSAGE_READ_ONLY) != 0
KMESSAGE_INIT_FROM_BUFFER | KMESSAGE_READ_ONLY | flags);
if (fBuffer != &fHeader && (fFlags & KMESSAGE_READ_ONLY))
fFlags &= ~(uint32)(KMESSAGE_READ_ONLY | KMESSAGE_CLONE_BUFFER);
if (fBuffer != &fHeader && (fFlags & KMESSAGE_READ_ONLY))