Yet another version, fixing some patching problems with Linux Kernel 2.2.14, currently diffed against 2.3.38 Memset is still a pain in the special dark place... but it works... See the source code and the website for the rest of the documentation available. For comments etc, send them to: email@example.com or check the website at http://unfix.org/projects/changer
Greets, Jeroen Massar
PS-for-nosy-people: My linux development&server&router box is called heaven (FQDN:heaven.unfix.org). My NT X-Workstation (running only ReflectionX most of the time) is called hell (FQDN:hell.unfix.org). The names have been chosen for the obvious reasons.
Legal Mumbo Jumbo
The code is GPL'ed as attached into the source code.
/dev/changer will allow you to mount all the cd's in your IDE changer(s) at once. thus avoiding the hassle with scripts or other custom software.
The code for /dev/changer can now be considered to be at a stable level.
Currently we only have the following problems:
It is a changer so you technically CAN'T access two slots at the same time. Thus whenever you spool two movies, one from slot 0 and the other from slot 3 the /dev/changer code will keep swapping between them every request. It'll get very slow because of this.
I'll work on something like a timer or alike (see the source-code) which will fix this by simply only allowing a slotchange every n seconds and thus effectivly allowing datatransfer from/to that slot for that time.
CD's aren't locked whenever I mount them.
See the source code and the website for the rest of the documentation available.
You'll have to apply the patch to your kernel, then enable either the module or include the driver into the kernel. eg:
root@heaven:/usr/src/local/linux-2.2.4# patch -p1 <changer_19990429.diff root@heaven:/usr/src/local/linux-2.2.4# make xconfig root@heaven:/usr/src/local/linux-2.2.4# make-kpkg --revision=42:heaven.2.2.6 binary root@heaven:/usr/src/local/linux-2.2.4# cd .. root@heaven:/usr/src/local/# dpkg -i *.deb line 1: patch the kernel line 2: configure the kernel (select either CHANGER=module or CHANGER=yes) line 3: make debian kernel packages, non-debian users could use: root@machine:/usr/src/local/linux-2.2.4# make dep bzLilo modules modules_install line 5: install the new kernel
And don't forget to modify your lilo where required... then reboot the newly installed kernel, see your favourite kernel HOWTO...
If you've created a module you'll have to insmod it eg: alias block-major-42 changer
then you should create enough devices for the changer with:
root@heaven:/dev# for i in `seq 255`; do mknod /dev/changer$i b 42 $i; mkdir /cdrom/$i; chown root:cdrom /dev/changer$i /cdrom/$i; done
after you've done that you'll have to mount the slots, just like an ordinary cdrom, eg:
root@heaven:# mount /dev/changer4 /cdrom/4 -t iso9660
you can ofcourse put these into the /etc/fstab.
If you still got any questions do a:
vi question; cat question | mail firstname.lastname@example.org