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
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32 # or implied, of GRNET S.A.
34 from image_creator.os_type.unix import Unix, sysprep
35 from image_creator.util import warn, output
42 def __init__(self, rootdev, ghandler):
43 super(Linux, self).__init__(rootdev, ghandler)
45 self._persistent = re.compile('/dev/[hsv]d[a-z][1-9]*')
47 def is_persistent(self, dev):
48 return not self._persistent.match(dev)
50 def get_uuid(self, dev):
52 return self._uuid[dev]
54 for attr in self.g.blkid(dev):
56 self._uuid[dev] = attr[1]
60 def fix_acpid(self, print_header=True):
61 """Replace acpid powerdown action scripts to immediately shutdown the
62 system without checking if a GUI is running.
66 output('Fixing acpid powerdown action')
68 powerbtn_action = '#!/bin/sh\n\nPATH=/sbin:/bin:/usr/bin\n' \
69 'shutdown -h now \"Power button pressed\"\n'
71 events_dir = '/etc/acpi/events'
72 if not self.g.is_dir(events_dir):
73 warn("No acpid event directory found")
76 event_exp = re.compile('event=(.+)', re.I)
77 action_exp = re.compile('action=(.+)', re.I)
78 for f in self.g.readdir(events_dir):
82 fullpath = "%s/%s" % (events_dir, f['name'])
85 for line in self.g.cat(fullpath).splitlines():
86 m = event_exp.match(line)
90 m = action_exp.match(line)
95 if event.strip() == "button[ /]power":
97 if not self.g.is_file(action):
98 warn("Acpid action file: %s does not exist" % action)
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)
105 warn("Acpid event file %s does not contain and action")
107 elif event.strip() == ".*":
108 warn("Found action `.*'. Don't know how to handle this." \
109 " Please edit \%s' image file manually to make the " \
110 "system immediatelly shutdown when an power button acpi " \
111 "event occures" % action)
115 def persistent_net_rules(self, print_header=True):
116 """Remove udev rules that will keep network interface names persistent
117 after hardware changes and reboots. Those rules will be created again
118 the next time the image runs.
122 output('Removing persistent network interface names')
124 rule_file = '/etc/udev/rules.d/70-persistent-net.rules'
125 if self.g.is_file(rule_file):
129 def remove_swap_entry(self, print_header=True):
130 """Remove swap entry from /etc/fstab. If swap is the last partition
131 then the partition will be removed when shrinking is performed. If the
132 swap partition is not the last partition in the disk or if you are not
133 going to shrink the image you should probably disable this.
137 output('Removing swap entry from fstab')
140 fstab = self.g.cat('/etc/fstab')
141 for line in fstab.splitlines():
143 entry = line.split('#')[0].strip().split()
144 if len(entry) == 6 and entry[2] == 'swap':
147 new_fstab += "%s\n" % line
149 self.g.write('/etc/fstab', new_fstab)
152 def persistent_devs(self, print_header=True):
153 """Scan fstab & grub configuration files and replace all non-persistent
154 device appearences with UUIDs.
158 output('Replacing fstab & grub non-persistent device appearences')
160 # convert all devices in fstab to persistent
161 persistent_root = self._persistent_fstab()
163 # convert all devices in grub1 to persistent
164 self._persistent_grub1(persistent_root)
166 def _persistent_grub1(self, new_root):
167 if self.g.is_file('/boot/grub/menu.lst'):
168 grub1 = '/boot/grub/menu.lst'
169 elif self.g.is_file('/etc/grub.conf'):
170 grub1 = '/etc/grub.conf'
174 self.g.aug_init('/', 0)
176 roots = self.g.aug_match('/files%s/title[*]/kernel/root' % grub1)
178 dev = self.g.aug_get(root)
179 if not self.is_persistent(dev):
180 # This is not always correct. Grub may contain root entries
181 # for other systems, but we only support 1 OS per hard
182 # disk, so this shouldn't harm.
183 self.g.aug_set(root, new_root)
188 def _persistent_fstab(self):
189 mpoints = self.g.mountpoints()
190 if len(mpoints) == 0:
191 pass # TODO: error handling
193 device_dict = dict([[mpoint, dev] for dev, mpoint in mpoints])
197 fstab = self.g.cat('/etc/fstab')
198 for line in fstab.splitlines():
200 line, dev, mpoint = self._convert_fstab_line(line, device_dict)
201 new_fstab += "%s\n" % line
206 self.g.write('/etc/fstab', new_fstab)
208 pass # TODO: error handling
212 def _convert_fstab_line(self, line, devices):
214 line = line.split('#')[0].strip()
220 warn("Detected abnormal entry in fstab")
226 if not self.is_persistent(dev):
227 if mpoint in devices:
228 dev = "UUID=%s" % self.get_uuid(devices[mpoint])
231 # comment out the entry
232 entry[0] = "#%s" % dev
233 return " ".join(entry), dev, mpoint
235 return orig, dev, mpoint
237 # vim: set sta sts=4 shiftwidth=4 sw=4 et ai :