MSDOSFSMNT_RONLY
if ((pmp->pm_flags & MSDOSFSMNT_RONLY) != 0 && !rw_upgrade)
KASSERT((pmp->pm_flags & MSDOSFSMNT_RONLY) == 0,
KASSERT((pmp->pm_flags & MSDOSFSMNT_RONLY) == 0,
KASSERT((pmp->pm_flags & MSDOSFSMNT_RONLY) == 0,
((fatVolume->pm_flags & MSDOSFSMNT_RONLY) != 0 \
fatFlags |= MSDOSFSMNT_RONLY;
bool readOnly = (fatFlags & MSDOSFSMNT_RONLY) != 0;
fatVolume->pm_flags |= MSDOSFSMNT_RONLY;
if (((volume)->pm_flags & MSDOSFSMNT_RONLY) == 0) {
(volume->pm_flags & MSDOSFSMNT_RONLY) == 0);
|| (volume->pm_flags & MSDOSFSMNT_RONLY) != 0) {