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
27 # POSSIBILITY OF SUCH DAMAGE.
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 uuid = self.g.vfs_uuid(dev)
55 self._uuid[dev] = uuid
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" %
102 (action, time.time()))
103 self.g.write(action, powerbtn_action)
106 self.out.warn("Acpid event file %s does not contain and "
109 elif event.strip() == ".*":
110 self.out.warn("Found action `.*'. Don't know how to handle "
111 "this. Please edit `%s' image file manually to "
112 "make the system immediatelly shutdown when an "
113 "power button acpi event occures." %
114 action.strip().split()[0])
118 def remove_persistent_net_rules(self, print_header=True):
119 """Remove udev rules that will keep network interface names persistent
120 after hardware changes and reboots. Those rules will be created again
121 the next time the image runs.
125 self.out.output('Removing persistent network interface names')
127 rule_file = '/etc/udev/rules.d/70-persistent-net.rules'
128 if self.g.is_file(rule_file):
132 def remove_swap_entry(self, print_header=True):
133 """Remove swap entry from /etc/fstab. If swap is the last partition
134 then the partition will be removed when shrinking is performed. If the
135 swap partition is not the last partition in the disk or if you are not
136 going to shrink the image you should probably disable this.
140 self.out.output('Removing swap entry from fstab')
143 fstab = self.g.cat('/etc/fstab')
144 for line in fstab.splitlines():
146 entry = line.split('#')[0].strip().split()
147 if len(entry) == 6 and entry[2] == 'swap':
150 new_fstab += "%s\n" % line
152 self.g.write('/etc/fstab', new_fstab)
155 def use_persistent_block_device_names(self, print_header=True):
156 """Scan fstab & grub configuration files and replace all non-persistent
157 device appearences with UUIDs.
161 self.out.output("Replacing fstab & grub non-persistent device "
164 # convert all devices in fstab to persistent
165 persistent_root = self._persistent_fstab()
167 # convert all devices in grub1 to persistent
168 self._persistent_grub1(persistent_root)
170 def _persistent_grub1(self, new_root):
171 if self.g.is_file('/boot/grub/menu.lst'):
172 grub1 = '/boot/grub/menu.lst'
173 elif self.g.is_file('/etc/grub.conf'):
174 grub1 = '/etc/grub.conf'
178 self.g.aug_init('/', 0)
180 roots = self.g.aug_match('/files%s/title[*]/kernel/root' % grub1)
182 dev = self.g.aug_get(root)
183 if not self.is_persistent(dev):
184 # This is not always correct. Grub may contain root entries
185 # for other systems, but we only support 1 OS per hard
186 # disk, so this shouldn't harm.
187 self.g.aug_set(root, new_root)
192 def _persistent_fstab(self):
193 mpoints = self.g.mountpoints()
194 if len(mpoints) == 0:
195 pass # TODO: error handling
197 device_dict = dict([[mpoint, dev] for dev, mpoint in mpoints])
201 fstab = self.g.cat('/etc/fstab')
202 for line in fstab.splitlines():
204 line, dev, mpoint = self._convert_fstab_line(line, device_dict)
205 new_fstab += "%s\n" % line
210 self.g.write('/etc/fstab', new_fstab)
212 pass # TODO: error handling
216 def _convert_fstab_line(self, line, devices):
218 line = line.split('#')[0].strip()
224 self.out.warn("Detected abnormal entry in fstab")
230 if not self.is_persistent(dev):
231 if mpoint in devices:
232 dev = "UUID=%s" % self.get_uuid(devices[mpoint])
235 # comment out the entry
236 entry[0] = "#%s" % dev
237 return " ".join(entry), dev, mpoint
239 return orig, dev, mpoint
241 # vim: set sta sts=4 shiftwidth=4 sw=4 et ai :