|
quick, non-tested sample code
to give you an idea, the following *WILL NOT* work on your machine,
unless you're really lucky and have your root partition as the second
partition on the first hard drive. Even if it does work, it won't really do anything. %pre --interpreter /usr/bin/python --erroronfail --log=/tmp/kspre.log import sys,os,time,shutil,parted,re,subprocess,zipfile sys.path.append("/usr/lib/anaconda") import isys,iutil ### This finds the first hard drive drive = isys.hardDriveDict().keys()[0] ### The following will mount the second partition on the first harddrive as /tmp/sysimage rootloc = "/tmp/sysimage" os.makedirs(rootloc) rootdrive = "/dev/%s2" % drive isys.mount(rootdrive,rootloc,fstype="ext3") ###The following does some work to set up a somewhat sane chroot environment os.system("chmod 644 /dev/null") isys.mount("/dev","/tmp/sysimage/dev",fstype="tmpfs") isys.mount("/proc","/tmp/sysimage/proc",fstype="proc") isys.mount("/selinux","/tmp/sysimage/selinux",fstype="selinuxfs") ###The following function lets you open up subprocesses in the chroot environment def chroot(): os.chroot(rootloc) ###The following runs an rpm command to check the release in the chroot subprocess.Popen("rpm -qa *release",preexec_fn=chroot,shell=True,stdout=subprocess.PIPE).stdout.read() ###Cleanup isys.umount("/tmp/sysimage/dev") isys.umount("/tmp/sysimage/proc") isys.umount("/tmp/sysimage/selinux") isys.umount("/tmp/sysimage") Matt Rose wrote: Yes, on upgrade, but it's not easy. You have to detect and mount the partitions by hand. If you know some python, you can include the anaconda libs and helper functions, but if you're just using sh, you'd have one hell of a %pre script. |
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