As Kostik Belousov wrote: > > So does anyone have an idea > > why this mmap() call:
... > > yields an EINVAL now under 8-stable? > > Do sysctl security.bsd.map_at_zero=1 Ah, thanks! Now it works. Well, at least it doesn't crash anymore (I somehow have to fix my boot environment, hopefully I'll be able to perform a fresh installation of FreeDOS there.) So I guess this should be added to doscmd's documentation then. As Jeremy Chadwick wrote: > I'm not sure why a person would need or want MAP_FIXED in this > situation; why can't they just take the result of mmap() (a void *) and > use that as a base address offset instead of assuming zero in their > software? Because MS-DOS utilities are written in the assumption of running at address 0 (or only slightly beyond). Remember, this mmap() maps the MS-DOS emulator base memory (that's why it is fatal if the allocation fails). -- cheers, J"org .-.-. --... ...-- -.. . DL8DTL http://www.sax.de/~joerg/ NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-) _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
