1 # Copyright 2012 GRNET S.A. All rights reserved.
3 # Redistribution and use in source and binary forms, with or
4 # without modification, are permitted provided that the following
7 # 1. Redistributions of source code must retain the above
8 # copyright notice, this list of conditions and the following
11 # 2. Redistributions in binary form must reproduce the above
12 # copyright notice, this list of conditions and the following
13 # disclaimer in the documentation and/or other materials
14 # provided with the distribution.
16 # THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
17 # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
20 # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
23 # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
24 # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
26 # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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29 # The views and conclusions contained in the software and
30 # documentation are those of the authors and should not be
31 # interpreted as representing official policies, either expressed
32 # or implied, of GRNET S.A.
34 from image_creator.os_type.unix import Unix, sysprep
41 def __init__(self, rootdev, ghandler, output):
42 super(Linux, self).__init__(rootdev, ghandler, output)
44 self._persistent = re.compile('/dev/[hsv]d[a-z][1-9]*')
46 def is_persistent(self, dev):
47 return not self._persistent.match(dev)
49 def get_uuid(self, dev):
51 return self._uuid[dev]
53 for attr in self.g.blkid(dev):
55 self._uuid[dev] = attr[1]
59 def fix_acpid(self, print_header=True):
60 """Replace acpid powerdown action scripts to immediately shutdown the
61 system without checking if a GUI is running.
65 self.out.output('Fixing acpid powerdown action')
67 powerbtn_action = '#!/bin/sh\n\nPATH=/sbin:/bin:/usr/bin\n' \
68 'shutdown -h now \"Power button pressed\"\n'
70 events_dir = '/etc/acpi/events'
71 if not self.g.is_dir(events_dir):
72 self.out.warn("No acpid event directory found")
75 event_exp = re.compile('event=(.+)', re.I)
76 action_exp = re.compile('action=(.+)', re.I)
77 for f in self.g.readdir(events_dir):
81 fullpath = "%s/%s" % (events_dir, f['name'])
84 for line in self.g.cat(fullpath).splitlines():
85 m = event_exp.match(line)
89 m = action_exp.match(line)
94 if event.strip() == "button[ /]power":
96 if not self.g.is_file(action):
97 self.out.warn("Acpid action file: %s does not exist" %
100 self.g.copy_file_to_file(action, \
101 "%s.orig.snf-image-creator-%d" % (action, time.time()))
102 self.g.write(action, powerbtn_action)
106 "Acpid event file %s does not contain and action")
108 elif event.strip() == ".*":
110 "Found action `.*'. Don't know how to handle this. " \
111 "Please edit \%s' image file manually to make the " \
112 "system immediatelly shutdown when an power button acpi " \
113 "event occures" % action)
117 def persistent_net_rules(self, print_header=True):
118 """Remove udev rules that will keep network interface names persistent
119 after hardware changes and reboots. Those rules will be created again
120 the next time the image runs.
124 self.out.output('Removing persistent network interface names')
126 rule_file = '/etc/udev/rules.d/70-persistent-net.rules'
127 if self.g.is_file(rule_file):
131 def remove_swap_entry(self, print_header=True):
132 """Remove swap entry from /etc/fstab. If swap is the last partition
133 then the partition will be removed when shrinking is performed. If the
134 swap partition is not the last partition in the disk or if you are not
135 going to shrink the image you should probably disable this.
139 self.out.output('Removing swap entry from fstab')
142 fstab = self.g.cat('/etc/fstab')
143 for line in fstab.splitlines():
145 entry = line.split('#')[0].strip().split()
146 if len(entry) == 6 and entry[2] == 'swap':
149 new_fstab += "%s\n" % line
151 self.g.write('/etc/fstab', new_fstab)
154 def persistent_devs(self, print_header=True):
155 """Scan fstab & grub configuration files and replace all non-persistent
156 device appearences with UUIDs.
161 'Replacing fstab & grub non-persistent device appearences')
163 # convert all devices in fstab to persistent
164 persistent_root = self._persistent_fstab()
166 # convert all devices in grub1 to persistent
167 self._persistent_grub1(persistent_root)
169 def _persistent_grub1(self, new_root):
170 if self.g.is_file('/boot/grub/menu.lst'):
171 grub1 = '/boot/grub/menu.lst'
172 elif self.g.is_file('/etc/grub.conf'):
173 grub1 = '/etc/grub.conf'
177 self.g.aug_init('/', 0)
179 roots = self.g.aug_match('/files%s/title[*]/kernel/root' % grub1)
181 dev = self.g.aug_get(root)
182 if not self.is_persistent(dev):
183 # This is not always correct. Grub may contain root entries
184 # for other systems, but we only support 1 OS per hard
185 # disk, so this shouldn't harm.
186 self.g.aug_set(root, new_root)
191 def _persistent_fstab(self):
192 mpoints = self.g.mountpoints()
193 if len(mpoints) == 0:
194 pass # TODO: error handling
196 device_dict = dict([[mpoint, dev] for dev, mpoint in mpoints])
200 fstab = self.g.cat('/etc/fstab')
201 for line in fstab.splitlines():
203 line, dev, mpoint = self._convert_fstab_line(line, device_dict)
204 new_fstab += "%s\n" % line
209 self.g.write('/etc/fstab', new_fstab)
211 pass # TODO: error handling
215 def _convert_fstab_line(self, line, devices):
217 line = line.split('#')[0].strip()
223 self.out.warn("Detected abnormal entry in fstab")
229 if not self.is_persistent(dev):
230 if mpoint in devices:
231 dev = "UUID=%s" % self.get_uuid(devices[mpoint])
234 # comment out the entry
235 entry[0] = "#%s" % dev
236 return " ".join(entry), dev, mpoint
238 return orig, dev, mpoint
240 # vim: set sta sts=4 shiftwidth=4 sw=4 et ai :