-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):
- pass
+ 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]*')
+
+ def is_persistent(self, dev):
+ return not self._persistent.match(dev)
+
+ def get_uuid(self, dev):
+ if dev in self._uuid:
+ return self._uuid[dev]
+
+ uuid = self.g.vfs_uuid(dev)
+ assert len(uuid)
+ self._uuid[dev] = uuid
+ return uuid
+
+ @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.
+ """
+
+ 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
+
+ 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)
+
+ @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()
+
+ # convert all devices in grub1 to persistent
+ self._persistent_grub1(persistent_root)
+
+ def _persistent_grub1(self, new_root):
+ if self.g.is_file('/boot/grub/menu.lst'):
+ grub1 = '/boot/grub/menu.lst'
+ elif self.g.is_file('/etc/grub.conf'):
+ grub1 = '/etc/grub.conf'
+ else:
+ return
+
+ self.g.aug_init('/', 0)
+ try:
+ roots = self.g.aug_match('/files%s/title[*]/kernel/root' % grub1)
+ for root in roots:
+ dev = self.g.aug_get(root)
+ if not self.is_persistent(dev):
+ # This is not always correct. Grub may contain root entries
+ # for other systems, but we only support 1 OS per hard
+ # disk, so this shouldn't harm.
+ self.g.aug_set(root, new_root)
+ finally:
+ self.g.aug_save()
+ self.g.aug_close()
+
+ def _persistent_fstab(self):
+ mpoints = self.g.mountpoints()
+ if len(mpoints) == 0:
+ pass # TODO: error handling
+
+ device_dict = dict([[mpoint, dev] for dev, mpoint in mpoints])
+
+ root_dev = None
+ new_fstab = ""
+ fstab = self.g.cat('/etc/fstab')
+ for line in fstab.splitlines():
+
+ line, dev, mpoint = self._convert_fstab_line(line, device_dict)
+ new_fstab += "%s\n" % line
+
+ if mpoint == '/':
+ root_dev = dev
+
+ self.g.write('/etc/fstab', new_fstab)
+ if root_dev is None:
+ pass # TODO: error handling
+
+ return root_dev
+
+ def _convert_fstab_line(self, line, devices):
+ orig = line
+ line = line.split('#')[0].strip()
+ if len(line) == 0:
+ return orig, "", ""
+
+ entry = line.split()
+ if len(entry) != 6:
+ self.out.warn("Detected abnormal entry in fstab")
+ return orig, "", ""
+
+ dev = entry[0]
+ mpoint = entry[1]
+
+ if not self.is_persistent(dev):
+ if mpoint in devices:
+ dev = "UUID=%s" % self.get_uuid(devices[mpoint])
+ entry[0] = dev
+ else:
+ # comment out the entry
+ entry[0] = "#%s" % dev
+ return " ".join(entry), dev, mpoint
+
+ return orig, dev, mpoint
# vim: set sta sts=4 shiftwidth=4 sw=4 et ai :
projects / snf-image-creator / blobdiff