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# this owns partitioning, fstab generation, disk scanning, raid, etc
#
# a fstab is returned as a list of:
# ( mntpoint, device, fsystem, doFormat, size, (file) )
# tuples, sorted by mntpoint; note that device may be a raid device; the file
# value is optional, and if it exists it names a file which will be created
# on the (already existant!) device and loopback mounted
#
# the swap information is stored as ( device, format ) tuples
#
# raid lists are stored as ( mntpoint, raiddevice, fssystem, doFormat,
# raidlevel, [ device list ] )
#
# we always store as much of the fstab within the disk druid structure
# as we can -- Don't Duplicate Data.
import isys
import iutil
import os
import string
import raid
import struct
import _balkan
import sys
from translate import _
from log import log
import kudzu
fstabFormatString = "%-23s %-23s %-7s %-15s %d %d\n";
class Fstab:
# return 1 if we should stay on the same screen
def checkFormatting(self, messageWindow):
return 0
def getMbrDevice(self):
return self.drive
def getBootDevice(self):
return self.boot
def getRootDevice(self):
return self.root
def rootOnLoop(self):
return 0
def rescanPartitions(self, clearFstabCache = 0):
pass
def closeDrives(self, clearFstabCache = 0):
pass
def setReadonly(self, readOnly):
pass
def savePartitions(self):
pass
def runDruid(self):
pass
def updateFsCache(self):
pass
def setFormatFilesystem(self, device, format):
pass
def writeCleanupPath(self, f):
pass
def driveList(self):
return self.drive
def turnOffSwap(self, devices = 1, files = 0):
isys.swapoff(self.swap)
def turnOnSwap(self, instPath, waitWindow, formatSwap = 1):
iutil.mkdirChain('/tmp/swap')
device = self.swap
file = '/tmp/swap/' + device
isys.makeDevInode(device, file)
w = waitWindow(_("Formatting"),
_("Formatting swap space..."))
rc = iutil.execWithRedirect ("/usr/sbin/mkswap",
[ "mkswap", '-v1', file ],
stdout = None, stderr = None,
searchPath = 1)
w.pop()
if rc:
self.messageWindow(_("Error"), _("Error creating swap on device ") + file)
else:
isys.swapon (file)
def umountFilesystems(self, instPath, ignoreErrors = 0):
isys.umount(instPath + '/proc', removeDir = 0)
try:
isys.umount(instPath + '/proc/bus/usb', removeDir = 0)
log("Umount USB OK")
except:
# log("Umount USB Fail")
pass
mounts = self.mountList()
mounts.reverse()
for (n, device, fsystem, doFormat, size) in self.mountList():
isys.umount(mntPoint, removeDir = 0)
def makeFilesystems(self, messageWindow, progressWindow):
labelSkipList = []
labels = {}
for (mntpoint, device, fsystem, doFormat, size) in self.mountList():
if doFormat: labelSkipList.append(device)
for (mntpoint, device, fsystem, doFormat, size) in self.mountList():
if not doFormat:
continue
isys.makeDevInode(device, '/tmp/' + device)
if fsystem == "ext2":
label = createLabel(labels, mntpoint)
args = [ "/usr/sbin/mke2fs", '/tmp/' + device, '-L', label ]
# set up raid options for md devices.
if device[:2] == 'md':
for (rmnt, rdevice, fsType, raidType, start, size, makeup) in raid:
if rdevice == device:
rtype = raidType
rdisks = len (makeup)
if rtype == 5:
rdisks = rdisks - 1
args = args + [ '-R', 'stride=%d' % (rdisks * 16) ]
elif rtype == 0:
args = args + [ '-R', 'stride=%d' % (rdisks * 16) ]
if self.badBlockCheck:
args.append ("-c")
rc = ext2FormatFilesystem(args, "/dev/tty5",
progressWindow, mntpoint)
if rc:
messageWindow(_("Error"),
_("An error occured trying to format %s. This problem "
"is serious, and the install cannot continue.\n\n"
"Press Enter to reboot your system.") % mntpoint)
raise SystemError
else:
pass
def mountList(self):
return [("/", self.root, "ext2", 1, 0),
("/boot", self.boot, "ext2", 1, 0),
("swap", self.swap, "swap", 1, 0)]
def mountFilesystems(self, instPath, raiseErrors = 0, readOnly = 0):
for (mntpoint, device, fsystem, doFormat, size) in self.mountList():
if fsystem == "swap":
continue
elif fsystem == "ext2" or fsystem == "ext3" or \
(fsystem == "vfat" and mntpoint == "/boot/efi"):
try:
iutil.mkdirChain(instPath + mntpoint)
isys.mount(device, instPath + mntpoint, fstype = fsystem,
readOnly = readOnly)
except SystemError, (errno, msg):
if raiseErrors:
raise SystemError, (errno, msg)
self.messageWindow(_("Error"),
_("Error mounting device %s as %s: %s\n\n"
"This most likely means this partition has "
"not been formatted.\n\nPress OK to reboot your "
"system.") % (device, mntpoint, msg))
sys.exit(0)
try:
os.mkdir (instPath + '/proc')
except:
pass
isys.mount('/proc', instPath + '/proc', 'proc')
def hasDirtyFilesystems(self):
if self.rootOnLoop():
(rootDev, rootFs) = self.getRootDevice()
mountLoopbackRoot(rootDev, skipMount = 1)
dirty = isys.ext2IsDirty("loop1")
unmountLoopbackRoot(skipMount = 1)
if dirty: return 1
for entry in self.entries:
# XXX - multifsify, virtualize isdirty per fstype
if fsystem != "ext2": continue
if doFormat: continue
if isys.ext2IsDirty(entry.device.getDevice()): return 1
return 0
def write(self, prefix):
format = fstabFormatString
f = open (prefix + "/etc/fstab", "w")
labels = {}
for (mntpoint, dev, fs, reformat, size) in self.mountList():
if mntpoint[:10] == 'DONT ERASE':
continue
if fs == "vfat" and mntpoint == "/":
f.write("# LOOP1: /dev/%s %s /redhat.img\n" % (dev, fs))
dev = "loop1"
fs = "ext2"
if labels.has_key(dev):
devName = "LABEL=" + labels[dev]
else:
devName = '/dev/' + dev
iutil.mkdirChain(prefix + mntpoint)
if mntpoint == '/':
f.write (format % ( devName, mntpoint, fs, 'defaults', 1, 1))
else:
if fs == "ext2":
f.write (format % ( devName, mntpoint, fs, 'defaults', 1, 2))
elif fs == "iso9660":
f.write (format % ( devName, mntpoint, fs, 'noauto,owner,ro', 0, 0))
elif fs == "auto":
f.write (format % ( devName, mntpoint, fs, 'noauto,owner', 0, 0))
else:
f.write (format % ( devName, mntpoint, fs, 'defaults', 0, 0))
f.write (format % ("none", "/proc", 'proc', 'defaults', 0, 0))
f.write (format % ("none", "/dev/pts", 'devpts', 'gid=5,mode=620',
0, 0))
f.close ()
# touch mtab
open (prefix + "/etc/mtab", "w+")
f.close ()
def __init__(self):
self.fsCache = {}
self.swapOn = 0
self.supplementalRaid = []
self.badBlockCheck = 0
#
# extraFilesystems used for upgrades when /etc/fstab is read as
# well as for adding fstab entries for removable media
# Should NOT be used by kickstart any more
#
self.extraFilesystems = []
self.existingRaid = []
self.loopbackSize = 0
self.loopbackMountCount = 0
# I intentionally don't initialize this, as all install paths should
# initialize this automatically
#self.shouldRunDruid = 0
devices = kudzu.probe(kudzu.CLASS_HD, 0, 0)
list = []
for dev in devices:
if dev.device:
list.append(dev.device)
list.sort()
drive = list[0]
self.drive = drive
self.root = drive + "1"
self.boot = drive + "2"
self.swap = drive + "3"
def readFstab (path, fstab):
loopIndex = {}
f = open (path, "r")
lines = f.readlines ()
f.close
fstab.clearExistingRaid()
fstab.clearMounts()
labelsByMount = {}
labels = fstab.readLabels()
for device in labels.keys():
labelsByMount[labels[device]] = device
drives = fstab.driveList()
raidList = raid.scanForRaid(drives)
raidByDev = {}
for (mdDev, devList) in raidList:
raidByDev[mdDev] = devList
for line in lines:
fields = string.split (line)
if not fields: continue
if fields[0] == "#" and len(fields)>4 and fields[1][0:4] == "LOOP":
device = string.lower(fields[1])
if device[len(device) - 1] == ":":
device = device[0:len(device) - 1]
realDevice = fields[2]
if realDevice[0:5] == "/dev/":
realDevice = realDevice[5:]
loopIndex[device] = (realDevice, fields[3])
elif line[0] == "#":
# skip comments
continue
# all valid fstab entries have 6 fields
if len (fields) < 4 or len (fields) > 6: continue
if fields[2] != "ext2" and fields[2] != "ext3" and fields[2] != "swap":
continue
if string.find(fields[3], "noauto") != -1: continue
if len(fields) >= 6 and fields[0][0:6] == "LABEL=":
label = fields[0][6:]
if labelsByMount.has_key(label):
device = labelsByMount[label]
fsystem = fields[2]
fstab.addMount(device, fields[1], fsystem)
elif fields[0][0:7] == "/dev/md":
fstab.addExistingRaidDevice(fields[0][5:], fields[1],
fields[2], raidByDev[int(fields[0][7:])])
elif (fields[0][0:7] == "/dev/hd" or
fields[0][0:7] == "/dev/sd" or
fields[0][0:9] == "/dev/loop" or
fields[0][0:8] == "/dev/rd/" or
fields[0][0:9] == "/dev/ida/" or
fields[0][0:11] == "/dev/cciss/"):
# this gets things on devices
device = fields[0][5:]
fsystem = fields[2]
if loopIndex.has_key(device):
(device, fsystem) = loopIndex[device]
fstab.addMount(device, fields[1], fsystem)
elif (fields[2] == "swap" and fields[0][0:5] != "/dev/"):
# swap files
file = fields[0]
# the loophost looks like /mnt/loophost to the install, not
# like /initrd/loopfs
if file[0:15] == "/initrd/loopfs/":
file = "/mnt/loophost/" + file[14:]
fstab.addMount(file, "swap", "swap")
def createLabel(labels, newLabel):
if len(newLabel) > 16:
newLabel = newLabel[0:16]
count = 0
while labels.has_key(newLabel):
count = count + 1
s = "%s" % count
if (len(newLabel) + len(s)) <= 16:
newLabel = newLabel + s
else:
strip = len(newLabel) + len(s) - 16
newLabel = newLabel[0:len(newLabel) - strip] + s
labels[newLabel] = 1
return newLabel
def mountLoopbackRoot(device, skipMount = 0):
isys.mount(device, '/mnt/loophost', fstype = "vfat")
isys.makeDevInode("loop1", '/tmp/' + "loop1")
isys.losetup("/tmp/loop1", "/mnt/loophost/redhat.img")
if not skipMount:
isys.mount("loop1", '/mnt/sysimage')
def unmountLoopbackRoot(skipMount = 0):
if not skipMount:
isys.umount('/mnt/sysimage')
isys.makeDevInode("loop1", '/tmp/' + "loop1")
isys.unlosetup("/tmp/loop1")
isys.umount('/mnt/loophost')
def ext2FormatFilesystem(argList, messageFile, windowCreator, mntpoint):
w = windowCreator(_("Formatting"),
_("Formatting %s filesystem...") % (mntpoint,), 100)
fd = os.open(messageFile, os.O_RDWR | os.O_CREAT | os.O_APPEND)
p = os.pipe()
childpid = os.fork()
if (not childpid):
os.close(p[0])
os.dup2(p[1], 1)
os.dup2(fd, 2)
os.close(p[1])
os.close(fd)
os.execv(argList[0], argList)
log("failed to exec %s", argList)
sys.exit(1)
os.close(p[1])
# ignoring SIGCHLD would be cleaner then ignoring EINTR, but
# we can't use signal() in this thread?
s = 'a'
while s and s != '\b':
try:
s = os.read(p[0], 1)
except OSError, args:
(num, str) = args
if (num != 4):
raise IOError, args
os.write(fd, s)
num = ''
while s:
try:
s = os.read(p[0], 1)
os.write(fd, s)
if s != '\b':
try:
num = num + s
except:
pass
else:
if num:
l = string.split(num, '/')
w.set((int(l[0]) * 100) / int(l[1]))
isys.sync()
num = ''
except OSError, args:
(num, str) = args
if (num != 4):
raise IOError, args
try:
(pid, status) = os.waitpid(childpid, 0)
except OSError, (errno, msg):
print __name__, "waitpid:", msg
os.close(fd)
w.pop()
if os.WIFEXITED(status) and (os.WEXITSTATUS(status) == 0):
return 0
return 1
def enabledSwapDict():
# returns a dict of swap areas currently being used
f = open("/proc/swaps", "r")
lines = f.readlines()
f.close()
# the first line is header
lines = lines[1:]
swaps = {}
for line in lines:
l = string.split(line)
swaps[l[0]] = 1
return swaps
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