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|
#
# floppy.py - floppy drive probe and bootdisk creation
#
# Erik Troan <ewt@redhat.com>
#
# Copyright 2001-2002 Red Hat, Inc.
#
# This software may be freely redistributed under the terms of the GNU
# library public license.
#
# You should have received a copy of the GNU Library Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
import isys
import errno
import iutil
import re
import os, stat
import rpm
import kudzu
from constants import *
from flags import flags
from rhpl.log import log
from rhpl.translate import _
def probeFloppyDevice():
fdDevice = "fd0"
# we now have nifty kudzu code that does all of the heavy lifting
# and properly detects detached floppy drives, ide floppies, and
# even usb floppies
devices = kudzu.probe(kudzu.CLASS_FLOPPY,
kudzu.BUS_IDE | kudzu.BUS_MISC | kudzu.BUS_SCSI,
kudzu.PROBE_ALL)
if not devices:
log("no floppy devices found but we'll try fd0 anyway")
return fdDevice
for device in devices:
if device.detached:
continue
log("anaconda floppy device %s" % (device.device))
return device.device
log("anaconda floppy device is %s", fdDevice)
return fdDevice
def makeBootdisk (intf, dir, floppyDevice, hdList, instPath, bootloader):
if dir == DISPATCH_BACK:
return DISPATCH_NOOP
if flags.test:
return DISPATCH_NOOP
kernel = hdList['kernel']
kernelTag = "-%s-%s" % (kernel[rpm.RPMTAG_VERSION],
kernel[rpm.RPMTAG_RELEASE])
# FIXME: if other arches had working boot disks, we wouldn't be able
# to hardcode /boot
kernel = "%s/boot/vmlinuz%s" %(instPath, kernelTag)
size = 0
if os.access(kernel, os.R_OK):
try:
kernelsize = os.stat(kernel)[stat.ST_SIZE]
log("kernelsize is %s" %(kernelsize,))
except:
kernelsize = 0
size = size + kernelsize
initrd = "%s/boot/initrd%s.img" %(instPath, kernelTag)
if os.access(initrd, os.R_OK):
try:
initrdsize = os.stat(initrd)[stat.ST_SIZE]
log("initrdsize is %s" %(initrdsize,) )
except:
initrdsize = 0
size = size + initrdsize
log("boot floppy size is %s" %(size,))
# go within 10 K of the size of the boot disk to have a tad
# bit of safety. if this fails, we're no worse off than we used
# to be.
if size >= 1416 * 1024 * 1024:
intf.messageWindow(_("Unable to make boot floppy"),
_("The size of the kernel modules needed "
"for your machine make it impossible to "
"create a boot disk that will fit on a "
"floppy diskette."),
type = "warning")
return DISPATCH_NOOP
rc = intf.messageWindow( _("Insert a floppy disk"),
_("Please remove any diskettes from the floppy "
"drive, and insert the floppy diskette that "
"is to contain the boot disk.\n\nAll data will "
"be ERASED during creation of the boot disk."),
type="custom", custom_buttons=[_("_Cancel"), _("_Make boot disk")])
if not rc:
return DISPATCH_NOOP
# this is faster then waiting on mkbootdisk to fail
device = floppyDevice
isys.makeDevInode(device, "/tmp/floppy")
try:
fd = os.open("/tmp/floppy", os.O_RDONLY)
except:
intf.messageWindow( _("Error"),
_("An error occurred while making the boot disk. "
"Please make sure that there is a floppy "
"in the first floppy drive."))
return DISPATCH_BACK
os.close(fd)
if bootloader.args.get():
args = bootloader.args.get()
else:
args = ""
w = intf.waitWindow (_("Creating"), _("Creating boot disk..."))
rc = iutil.execWithRedirect("/sbin/mkbootdisk",
[ "/sbin/mkbootdisk",
"--kernelargs", args,
"--noprompt",
"--device",
"/dev/" + floppyDevice,
kernelTag[1:] ],
stdout = '/dev/tty5', stderr = '/dev/tty5',
searchPath = 1, root = instPath)
w.pop()
if rc:
intf.messageWindow( _("Error"),
_("An error occurred while making the boot disk. "
"Please make sure that there is a floppy "
"in the first floppy drive."))
return DISPATCH_BACK
# more sanity checking -- see if the initrd size and kernel size
# match what we thought they would be
device = floppyDevice
file = "/tmp/floppy"
isys.makeDevInode(device, file)
try:
isys.mount("/tmp/floppy", "/mnt/floppy", "vfat")
except:
intf.messageWindow(_("Error"),
_("An error occurred while attempting to verify "
"the boot disk. Please make sure that you "
"have a good floppy in the first floppy drive."))
return DISPATCH_BACK
problem = 0
if os.access("/mnt/floppy/vmlinuz", os.R_OK):
if kernelsize != 0:
size = os.stat("/mnt/floppy/vmlinuz")[stat.ST_SIZE]
if size != kernelsize:
problem = 1
else:
log("unable to verify kernel size. hope it fit!")
else:
problem = 1
if initrdsize != 0:
if os.access("/mnt/floppy/initrd.img", os.R_OK):
size = os.stat("/mnt/floppy/initrd.img")[stat.ST_SIZE]
if size != initrdsize:
problem = 1
else:
problem = 1
try:
isys.umount("/mnt/floppy")
except:
pass
if problem == 1:
intf.messageWindow(_("Error"),
_("Your boot floppy appears to be invalid. This "
"is likely due to a bad floppy. Please make "
"sure that you have a good floppy in the "
"first floppy drive."))
return DISPATCH_BACK
return DISPATCH_FORWARD
|
