X-Git-Url: https://code.grnet.gr/git/snf-image-creator/blobdiff_plain/9cbb5794bf4c103861f7d9dd0bd800ff0ad7eaf7..fba0968870e13efbe1926fa43363aa56efd79ee4:/image_creator/os_type/linux.py diff --git a/image_creator/os_type/linux.py b/image_creator/os_type/linux.py index 724e902..0166129 100644 --- a/image_creator/os_type/linux.py +++ b/image_creator/os_type/linux.py @@ -1,10 +1,45 @@ -from image_creator.os_type.unix import Unix +# Copyright 2012 GRNET S.A. All rights reserved. +# +# Redistribution and use in source and binary forms, with or +# without modification, are permitted provided that the following +# conditions are met: +# +# 1. Redistributions of source code must retain the above +# copyright notice, this list of conditions and the following +# disclaimer. +# +# 2. Redistributions in binary form must reproduce the above +# copyright notice, this list of conditions and the following +# disclaimer in the documentation and/or other materials +# provided with the distribution. +# +# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS +# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR +# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR +# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF +# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED +# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN +# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +# POSSIBILITY OF SUCH DAMAGE. +# +# The views and conclusions contained in the software and +# documentation are those of the authors and should not be +# interpreted as representing official policies, either expressed +# or implied, of GRNET S.A. + +from image_creator.os_type.unix import Unix, sysprep + import re +import time class Linux(Unix): - def __init__(self, rootdev, ghandler): - super(Linux, self).__init__(rootdev, ghandler) + def __init__(self, rootdev, ghandler, output): + super(Linux, self).__init__(rootdev, ghandler, output) self._uuid = dict() self._persistent = re.compile('/dev/[hsv]d[a-z][1-9]*') @@ -15,44 +50,119 @@ class Linux(Unix): if dev in self._uuid: return self._uuid[dev] - for attr in self.g.blkid(dev): - if attr[0] == 'UUID': - self._uuid[dev] = attr[1] - return attr[1] - - def sysprep(self): - """Prepere system for image creation.""" - self.sysprep_acpid() - self.sysprep_persistent_net_rules() - self.sysprep_persistent_devs() + uuid = self.g.vfs_uuid(dev) + assert len(uuid) + self._uuid[dev] = uuid + return uuid - def sysprep_acpid(self): - """Replace acpid powerdown action scripts to automatically shutdown - the system without checking if a GUI is running. + @sysprep() + def fix_acpid(self, print_header=True): + """Replace acpid powerdown action scripts to immediately shutdown the + system without checking if a GUI is running. """ - action = '#!/bin/sh\n\nPATH=/sbin:/bin:/usr/bin\n shutdown -h now ' - '\"Power button pressed\"' - if self.g.is_file('/etc/acpi/powerbtn.sh'): - self.g.write(action, '/etc/acpi/powerbtn.sh') - elif self.g.is_file('/etc/acpi/actions/power.sh'): - self.g.write(actions, '/etc/acpi/actions/power.sh') - else: - print "Warning: No acpid action file found" + if print_header: + self.out.output('Fixing acpid powerdown action') + + powerbtn_action = '#!/bin/sh\n\nPATH=/sbin:/bin:/usr/bin\n' \ + 'shutdown -h now "Power button pressed"\n' + + events_dir = '/etc/acpi/events' + if not self.g.is_dir(events_dir): + self.out.warn("No acpid event directory found") + return - def sysprep_persistent_net_rules(self): + event_exp = re.compile('event=(.+)', re.I) + action_exp = re.compile('action=(.+)', re.I) + for f in self.g.readdir(events_dir): + if f['ftyp'] != 'r': + continue + + fullpath = "%s/%s" % (events_dir, f['name']) + event = "" + action = "" + for line in self.g.cat(fullpath).splitlines(): + m = event_exp.match(line) + if m: + event = m.group(1) + continue + m = action_exp.match(line) + if m: + action = m.group(1) + continue + + if event.strip() in ("button[ /]power", "button/power.*"): + if action: + if not self.g.is_file(action): + self.out.warn("Acpid action file: %s does not exist" % + action) + return + self.g.copy_file_to_file(action, + "%s.orig.snf-image-creator-%d" % + (action, time.time())) + self.g.write(action, powerbtn_action) + return + else: + self.out.warn("Acpid event file %s does not contain and " + "action") + return + elif event.strip() == ".*": + self.out.warn("Found action `.*'. Don't know how to handle " + "this. Please edit `%s' image file manually to " + "make the system immediatelly shutdown when an " + "power button acpi event occures." % + action.strip().split()[0]) + return + + self.out.warn("No acpi power button event found!") + + @sysprep() + def remove_persistent_net_rules(self, print_header=True): """Remove udev rules that will keep network interface names persistent after hardware changes and reboots. Those rules will be created again the next time the image runs. """ + + if print_header: + self.out.output('Removing persistent network interface names') + rule_file = '/etc/udev/rules.d/70-persistent-net.rules' if self.g.is_file(rule_file): self.g.rm(rule_file) - def sysprep_persistent_devs(self): - """Scan fstab and grub configuration files and replace all - non-persistent device appearences with UUIDs. + @sysprep() + def remove_swap_entry(self, print_header=True): + """Remove swap entry from /etc/fstab. If swap is the last partition + then the partition will be removed when shrinking is performed. If the + swap partition is not the last partition in the disk or if you are not + going to shrink the image you should probably disable this. + """ + + if print_header: + self.out.output('Removing swap entry from fstab') + + new_fstab = "" + fstab = self.g.cat('/etc/fstab') + for line in fstab.splitlines(): + + entry = line.split('#')[0].strip().split() + if len(entry) == 6 and entry[2] == 'swap': + continue + + new_fstab += "%s\n" % line + + self.g.write('/etc/fstab', new_fstab) + + @sysprep() + def use_persistent_block_device_names(self, print_header=True): + """Scan fstab & grub configuration files and replace all non-persistent + device references with UUIDs. """ + + if print_header: + self.out.output("Replacing fstab & grub non-persistent device " + "references") + # convert all devices in fstab to persistent persistent_root = self._persistent_fstab() @@ -113,7 +223,7 @@ class Linux(Unix): entry = line.split() if len(entry) != 6: - print "Warning: detected abnorman entry in fstab" + self.out.warn("Detected abnormal entry in fstab") return orig, "", "" dev = entry[0]