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import isys
import _balkan
import os
from translate import _
import raid
import iutil
import fstab
from log import log
import os.path
def findExistingRoots (intf, theFstab):
rootparts = []
win = intf.waitWindow (_("Searching"),
_("Searching for Red Hat Linux installations..."))
drives = theFstab.driveList()
mdList = raid.startAllRaid(drives)
for dev in mdList:
if fstab.isValidExt2 (dev):
try:
isys.mount(dev, '/mnt/sysimage', readOnly = 1)
except SystemError, (errno, msg):
intf.messageWindow(_("Error"),
_("Error mounting ext2 filesystem on %s: %s") % (dev, msg))
continue
if os.access ('/mnt/sysimage/etc/fstab', os.R_OK):
rootparts.append ((dev, "ext2"))
isys.umount('/mnt/sysimage')
raid.stopAllRaid(mdList)
for drive in drives:
isys.makeDevInode(drive, '/tmp/' + drive)
try:
table = _balkan.readTable ('/tmp/' + drive)
except SystemError:
pass
else:
for i in range (len (table)):
(type, sector, size) = table[i]
if size and type == _balkan.EXT2:
# for RAID arrays of format c0d0p1
if drive [:3] == "rd/" or drive [:4] == "ida/" or drive [:6] == "cciss/":
dev = drive + 'p' + str (i + 1)
else:
dev = drive + str (i + 1)
try:
isys.mount(dev, '/mnt/sysimage')
except SystemError, (errno, msg):
intf.messageWindow(_("Error"),
_("Error mounting ext2 filesystem on %s: %s") % (dev, msg))
continue
if os.access ('/mnt/sysimage/etc/fstab', os.R_OK):
rootparts.append ((dev, "ext2"))
isys.umount('/mnt/sysimage')
elif size and type == _balkan.DOS:
dev = drive + str (i + 1)
try:
isys.mount(dev, '/mnt/sysimage', fstype = "vfat",
readOnly = 1)
except SystemError, (errno, msg):
log("failed to mount vfat filesystem on %s\n"
% dev)
continue
if os.access('/mnt/sysimage/redhat.img', os.R_OK):
rootparts.append((dev, "vfat"))
isys.umount('/mnt/sysimage')
os.remove ('/tmp/' + drive)
win.pop ()
return rootparts
def mountRootPartition(intf, rootInfo, theFstab, instPath, allowDirty = 0,
raiseErrors = 0):
(root, rootFs) = rootInfo
mdList = raid.startAllRaid(theFstab.driveList())
if rootFs == "vfat":
fstab.mountLoopbackRoot(root)
else:
isys.mount(root, '/mnt/sysimage')
fstab.readFstab(instPath + '/etc/fstab', theFstab)
if rootFs == "vfat":
fstab.unmountLoopbackRoot()
else:
isys.umount('/mnt/sysimage')
raid.stopAllRaid(mdList)
if not allowDirty and theFstab.hasDirtyFilesystems():
import sys
intf.messageWindow(_("Dirty Filesystems"),
_("One or more of the filesystems for your Linux system "
"was not unmounted cleanly. Please boot your Linux "
"installation, let the filesystems be checked, and "
"shut down cleanly to upgrade."))
sys.exit(0)
theFstab.mountFilesystems (instPath, raiseErrors = raiseErrors)
# returns None if no more swap is needed
def swapSuggestion(instPath, fstab):
# mem is in kb -- round it up to the nearest 4Mb
mem = iutil.memInstalled(corrected = 0)
rem = mem % 16384
if (rem):
mem = mem + (16384 - rem)
mem = mem / 1024
# don't do this if we have more then 512 MB
if mem > 510: return None
swap = iutil.swapAmount() / 1024
# if we have twice as much swap as ram, we're safe
if swap >= (mem * 2):
return None
fsList = []
if fstab.rootOnLoop():
space = isys.pathSpaceAvailable("/mnt/loophost")
for info in fstab.mountList():
(mntpoint, partition) = info[0:2]
if mntpoint != '/': continue
info = (mntpoint, partition, space)
fsList.append(info)
else:
for info in fstab.mountList():
(mntpoint, partition, fsystem) = info[0:3]
if fsystem == "ext2":
space = isys.pathSpaceAvailable(instPath + mntpoint)
info = (mntpoint, partition, space)
fsList.append(info)
suggestion = mem * 2 - swap
suggSize = 0
suggMnt = None
for (mnt, part, size) in fsList:
if (size > suggSize) and (size > (suggestion + 100)):
suggMnt = mnt
return (fsList, suggestion, suggMnt)
def swapfileExists(swapname):
try:
rc = os.lstat(swapname)
return 1
except:
return 0
def createSwapFile(instPath, theFstab, mntPoint, size):
fstabPath = instPath + "/etc/fstab"
prefix = ""
if theFstab.rootOnLoop():
instPath = "/mnt/loophost"
prefix = "/initrd/loopfs"
if mntPoint != "/":
file = mntPoint + "/SWAP"
else:
file = "/SWAP"
existingSwaps = theFstab.swapList(files = 1)
swapFileDict = {}
for n in existingSwaps:
dev = n[0]
swapFileDict[dev] = 1
count = 0
while (swapfileExists(instPath + file) or
swapFileDict.has_key(file)):
count = count + 1
tmpFile = "/SWAP-%d" % (count)
if mntPoint != "/":
file = mntPoint + tmpFile
else:
file = tmpFile
theFstab.addMount(file, size, "swap")
theFstab.turnOnSwap(instPath)
f = open(fstabPath, "a")
f.write(fstab.fstabFormatString % (prefix + file, "swap", "swap", "defaults",
0, 0))
f.close()
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