+# 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
+from image_creator.util import warn
+
+from clint.textui import puts, indent
+
+import re
class Linux(Unix):
- pass
+ def __init__(self, rootdev, ghandler):
+ super(Linux, self).__init__(rootdev, ghandler)
+ 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]
+
+ for attr in self.g.blkid(dev):
+ if attr[0] == 'UUID':
+ self._uuid[dev] = attr[1]
+ return attr[1]
+
+ def sysprep_acpid(self):
+ """Replace acpid powerdown action scripts to automatically shutdown
+ the system without checking if a GUI is running.
+ """
+
+ puts('* Fixing acpid powerdown action')
+
+ 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('/etc/acpi/powerbtn.sh', action)
+ elif self.g.is_file('/etc/acpi/actions/power.sh'):
+ self.g.write('/etc/acpi/actions/power.sh', action)
+ else:
+ with indent(2):
+ warn("No acpid action file found")
+
+ def sysprep_persistent_net_rules(self):
+ """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.
+ """
+
+ puts('* 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.
+ """
+
+ puts('* Replacing fstab & grub non-persistent device appearences')
+
+ # 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:
+ 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
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projects / snf-image-creator / blobdiff