root / image_creator / os_type / linux.py @ 3c33e68a
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1 | ae48a082 | Nikos Skalkotos | # Copyright 2012 GRNET S.A. All rights reserved.
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2 | ae48a082 | Nikos Skalkotos | #
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3 | ae48a082 | Nikos Skalkotos | # Redistribution and use in source and binary forms, with or
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4 | ae48a082 | Nikos Skalkotos | # without modification, are permitted provided that the following
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5 | ae48a082 | Nikos Skalkotos | # conditions are met:
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6 | ae48a082 | Nikos Skalkotos | #
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7 | ae48a082 | Nikos Skalkotos | # 1. Redistributions of source code must retain the above
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8 | ae48a082 | Nikos Skalkotos | # copyright notice, this list of conditions and the following
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9 | ae48a082 | Nikos Skalkotos | # disclaimer.
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10 | ae48a082 | Nikos Skalkotos | #
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11 | ae48a082 | Nikos Skalkotos | # 2. Redistributions in binary form must reproduce the above
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12 | ae48a082 | Nikos Skalkotos | # copyright notice, this list of conditions and the following
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13 | ae48a082 | Nikos Skalkotos | # disclaimer in the documentation and/or other materials
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14 | ae48a082 | Nikos Skalkotos | # provided with the distribution.
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15 | ae48a082 | Nikos Skalkotos | #
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16 | ae48a082 | Nikos Skalkotos | # THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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17 | ae48a082 | Nikos Skalkotos | # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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18 | ae48a082 | Nikos Skalkotos | # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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19 | ae48a082 | Nikos Skalkotos | # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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20 | ae48a082 | Nikos Skalkotos | # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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21 | ae48a082 | Nikos Skalkotos | # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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22 | ae48a082 | Nikos Skalkotos | # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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23 | ae48a082 | Nikos Skalkotos | # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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24 | ae48a082 | Nikos Skalkotos | # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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25 | ae48a082 | Nikos Skalkotos | # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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26 | ae48a082 | Nikos Skalkotos | # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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27 | ae48a082 | Nikos Skalkotos | # POSSIBILITY OF SUCH DAMAGE.
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28 | ae48a082 | Nikos Skalkotos | #
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29 | ae48a082 | Nikos Skalkotos | # The views and conclusions contained in the software and
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30 | ae48a082 | Nikos Skalkotos | # documentation are those of the authors and should not be
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31 | ae48a082 | Nikos Skalkotos | # interpreted as representing official policies, either expressed
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32 | ae48a082 | Nikos Skalkotos | # or implied, of GRNET S.A.
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33 | ae48a082 | Nikos Skalkotos | |
34 | f165adc0 | Nikos Skalkotos | from image_creator.os_type.unix import Unix, sysprep |
35 | 22a6d232 | Nikos Skalkotos | |
36 | a83f5185 | Nikos Skalkotos | import re |
37 | 3f70f242 | Nikos Skalkotos | import time |
38 | aa2062ba | Nikos Skalkotos | |
39 | 8c574358 | Nikos Skalkotos | |
40 | aa2062ba | Nikos Skalkotos | class Linux(Unix): |
41 | e77e66a9 | Nikos Skalkotos | def __init__(self, rootdev, ghandler, output): |
42 | e77e66a9 | Nikos Skalkotos | super(Linux, self).__init__(rootdev, ghandler, output) |
43 | a83f5185 | Nikos Skalkotos | self._uuid = dict() |
44 | a83f5185 | Nikos Skalkotos | self._persistent = re.compile('/dev/[hsv]d[a-z][1-9]*') |
45 | a83f5185 | Nikos Skalkotos | |
46 | a83f5185 | Nikos Skalkotos | def is_persistent(self, dev): |
47 | a83f5185 | Nikos Skalkotos | return not self._persistent.match(dev) |
48 | a83f5185 | Nikos Skalkotos | |
49 | a83f5185 | Nikos Skalkotos | def get_uuid(self, dev): |
50 | a83f5185 | Nikos Skalkotos | if dev in self._uuid: |
51 | a83f5185 | Nikos Skalkotos | return self._uuid[dev] |
52 | a83f5185 | Nikos Skalkotos | |
53 | 20409e9f | Nikos Skalkotos | uuid = self.g.vfs_uuid(dev)
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54 | 20409e9f | Nikos Skalkotos | assert len(uuid) |
55 | 20409e9f | Nikos Skalkotos | self._uuid[dev] = uuid
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56 | 20409e9f | Nikos Skalkotos | return uuid
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57 | a83f5185 | Nikos Skalkotos | |
58 | f165adc0 | Nikos Skalkotos | @sysprep()
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59 | f165adc0 | Nikos Skalkotos | def fix_acpid(self, print_header=True): |
60 | d144e954 | Nikos Skalkotos | """Replace acpid powerdown action scripts to immediately shutdown the
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61 | d144e954 | Nikos Skalkotos | system without checking if a GUI is running.
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62 | 9cbb5794 | Nikos Skalkotos | """
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63 | 22a6d232 | Nikos Skalkotos | |
64 | 3f70f242 | Nikos Skalkotos | if print_header:
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65 | e77e66a9 | Nikos Skalkotos | self.out.output('Fixing acpid powerdown action') |
66 | 3f70f242 | Nikos Skalkotos | |
67 | 3f70f242 | Nikos Skalkotos | powerbtn_action = '#!/bin/sh\n\nPATH=/sbin:/bin:/usr/bin\n' \
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68 | f99fe99d | Nikos Skalkotos | 'shutdown -h now "Power button pressed"\n'
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69 | 3f70f242 | Nikos Skalkotos | |
70 | 3f70f242 | Nikos Skalkotos | events_dir = '/etc/acpi/events'
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71 | 3f70f242 | Nikos Skalkotos | if not self.g.is_dir(events_dir): |
72 | e77e66a9 | Nikos Skalkotos | self.out.warn("No acpid event directory found") |
73 | 3f70f242 | Nikos Skalkotos | return
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74 | 3f70f242 | Nikos Skalkotos | |
75 | 3f70f242 | Nikos Skalkotos | event_exp = re.compile('event=(.+)', re.I)
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76 | 3f70f242 | Nikos Skalkotos | action_exp = re.compile('action=(.+)', re.I)
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77 | 3f70f242 | Nikos Skalkotos | for f in self.g.readdir(events_dir): |
78 | 3f70f242 | Nikos Skalkotos | if f['ftyp'] != 'r': |
79 | 3f70f242 | Nikos Skalkotos | continue
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80 | 3f70f242 | Nikos Skalkotos | |
81 | 3f70f242 | Nikos Skalkotos | fullpath = "%s/%s" % (events_dir, f['name']) |
82 | 3f70f242 | Nikos Skalkotos | event = ""
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83 | 3f70f242 | Nikos Skalkotos | action = ""
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84 | 3f70f242 | Nikos Skalkotos | for line in self.g.cat(fullpath).splitlines(): |
85 | 3f70f242 | Nikos Skalkotos | m = event_exp.match(line) |
86 | 3f70f242 | Nikos Skalkotos | if m:
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87 | 3f70f242 | Nikos Skalkotos | event = m.group(1)
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88 | 3f70f242 | Nikos Skalkotos | continue
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89 | 3f70f242 | Nikos Skalkotos | m = action_exp.match(line) |
90 | 3f70f242 | Nikos Skalkotos | if m:
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91 | 3f70f242 | Nikos Skalkotos | action = m.group(1)
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92 | 3f70f242 | Nikos Skalkotos | continue
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93 | 3f70f242 | Nikos Skalkotos | |
94 | 3f70f242 | Nikos Skalkotos | if event.strip() == "button[ /]power": |
95 | 3f70f242 | Nikos Skalkotos | if action:
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96 | 3f70f242 | Nikos Skalkotos | if not self.g.is_file(action): |
97 | e77e66a9 | Nikos Skalkotos | self.out.warn("Acpid action file: %s does not exist" % |
98 | f99fe99d | Nikos Skalkotos | action) |
99 | 3f70f242 | Nikos Skalkotos | return
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100 | f99fe99d | Nikos Skalkotos | self.g.copy_file_to_file(action,
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101 | f99fe99d | Nikos Skalkotos | "%s.orig.snf-image-creator-%d" %
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102 | f99fe99d | Nikos Skalkotos | (action, time.time())) |
103 | d144e954 | Nikos Skalkotos | self.g.write(action, powerbtn_action)
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104 | 3f70f242 | Nikos Skalkotos | return
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105 | 3f70f242 | Nikos Skalkotos | else:
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106 | f99fe99d | Nikos Skalkotos | self.out.warn("Acpid event file %s does not contain and " |
107 | f99fe99d | Nikos Skalkotos | "action")
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108 | 3f70f242 | Nikos Skalkotos | return
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109 | 3f70f242 | Nikos Skalkotos | elif event.strip() == ".*": |
110 | f99fe99d | Nikos Skalkotos | self.out.warn("Found action `.*'. Don't know how to handle " |
111 | f99fe99d | Nikos Skalkotos | "this. Please edit `%s' image file manually to "
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112 | f99fe99d | Nikos Skalkotos | "make the system immediatelly shutdown when an "
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113 | f99fe99d | Nikos Skalkotos | "power button acpi event occures." %
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114 | f99fe99d | Nikos Skalkotos | action.strip().split()[0])
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115 | 3f70f242 | Nikos Skalkotos | return
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116 | 3f70f242 | Nikos Skalkotos | |
117 | f165adc0 | Nikos Skalkotos | @sysprep()
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118 | 755e1885 | Nikos Skalkotos | def remove_persistent_net_rules(self, print_header=True): |
119 | 9cbb5794 | Nikos Skalkotos | """Remove udev rules that will keep network interface names persistent
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120 | 9cbb5794 | Nikos Skalkotos | after hardware changes and reboots. Those rules will be created again
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121 | 9cbb5794 | Nikos Skalkotos | the next time the image runs.
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122 | 9cbb5794 | Nikos Skalkotos | """
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123 | 22a6d232 | Nikos Skalkotos | |
124 | 3f70f242 | Nikos Skalkotos | if print_header:
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125 | e77e66a9 | Nikos Skalkotos | self.out.output('Removing persistent network interface names') |
126 | 22a6d232 | Nikos Skalkotos | |
127 | 9cbb5794 | Nikos Skalkotos | rule_file = '/etc/udev/rules.d/70-persistent-net.rules'
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128 | 9cbb5794 | Nikos Skalkotos | if self.g.is_file(rule_file): |
129 | 9cbb5794 | Nikos Skalkotos | self.g.rm(rule_file)
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130 | 9cbb5794 | Nikos Skalkotos | |
131 | f165adc0 | Nikos Skalkotos | @sysprep()
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132 | 4a2fd05c | Nikos Skalkotos | def remove_swap_entry(self, print_header=True): |
133 | 4a2fd05c | Nikos Skalkotos | """Remove swap entry from /etc/fstab. If swap is the last partition
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134 | 4a2fd05c | Nikos Skalkotos | then the partition will be removed when shrinking is performed. If the
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135 | 4a2fd05c | Nikos Skalkotos | swap partition is not the last partition in the disk or if you are not
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136 | 4a2fd05c | Nikos Skalkotos | going to shrink the image you should probably disable this.
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137 | 4a2fd05c | Nikos Skalkotos | """
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138 | 4a2fd05c | Nikos Skalkotos | |
139 | 4a2fd05c | Nikos Skalkotos | if print_header:
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140 | e77e66a9 | Nikos Skalkotos | self.out.output('Removing swap entry from fstab') |
141 | 4a2fd05c | Nikos Skalkotos | |
142 | 4a2fd05c | Nikos Skalkotos | new_fstab = ""
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143 | 4a2fd05c | Nikos Skalkotos | fstab = self.g.cat('/etc/fstab') |
144 | 4a2fd05c | Nikos Skalkotos | for line in fstab.splitlines(): |
145 | 4a2fd05c | Nikos Skalkotos | |
146 | 4a2fd05c | Nikos Skalkotos | entry = line.split('#')[0].strip().split() |
147 | 4a2fd05c | Nikos Skalkotos | if len(entry) == 6 and entry[2] == 'swap': |
148 | 4a2fd05c | Nikos Skalkotos | continue
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149 | 4a2fd05c | Nikos Skalkotos | |
150 | 4a2fd05c | Nikos Skalkotos | new_fstab += "%s\n" % line
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151 | 4a2fd05c | Nikos Skalkotos | |
152 | 4a2fd05c | Nikos Skalkotos | self.g.write('/etc/fstab', new_fstab) |
153 | 4a2fd05c | Nikos Skalkotos | |
154 | 4a2fd05c | Nikos Skalkotos | @sysprep()
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155 | 755e1885 | Nikos Skalkotos | def use_persistent_block_device_names(self, print_header=True): |
156 | f165adc0 | Nikos Skalkotos | """Scan fstab & grub configuration files and replace all non-persistent
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157 | f165adc0 | Nikos Skalkotos | device appearences with UUIDs.
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158 | 9cbb5794 | Nikos Skalkotos | """
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159 | 22a6d232 | Nikos Skalkotos | |
160 | 3f70f242 | Nikos Skalkotos | if print_header:
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161 | f99fe99d | Nikos Skalkotos | self.out.output("Replacing fstab & grub non-persistent device " |
162 | f99fe99d | Nikos Skalkotos | "appearences")
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163 | 22a6d232 | Nikos Skalkotos | |
164 | a83f5185 | Nikos Skalkotos | # convert all devices in fstab to persistent
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165 | a83f5185 | Nikos Skalkotos | persistent_root = self._persistent_fstab()
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166 | a83f5185 | Nikos Skalkotos | |
167 | a83f5185 | Nikos Skalkotos | # convert all devices in grub1 to persistent
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168 | a83f5185 | Nikos Skalkotos | self._persistent_grub1(persistent_root)
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169 | a83f5185 | Nikos Skalkotos | |
170 | 9cbb5794 | Nikos Skalkotos | def _persistent_grub1(self, new_root): |
171 | a83f5185 | Nikos Skalkotos | if self.g.is_file('/boot/grub/menu.lst'): |
172 | a83f5185 | Nikos Skalkotos | grub1 = '/boot/grub/menu.lst'
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173 | a83f5185 | Nikos Skalkotos | elif self.g.is_file('/etc/grub.conf'): |
174 | a83f5185 | Nikos Skalkotos | grub1 = '/etc/grub.conf'
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175 | a83f5185 | Nikos Skalkotos | else:
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176 | a83f5185 | Nikos Skalkotos | return
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177 | a83f5185 | Nikos Skalkotos | |
178 | a83f5185 | Nikos Skalkotos | self.g.aug_init('/', 0) |
179 | a83f5185 | Nikos Skalkotos | try:
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180 | a83f5185 | Nikos Skalkotos | roots = self.g.aug_match('/files%s/title[*]/kernel/root' % grub1) |
181 | a83f5185 | Nikos Skalkotos | for root in roots: |
182 | a83f5185 | Nikos Skalkotos | dev = self.g.aug_get(root)
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183 | a83f5185 | Nikos Skalkotos | if not self.is_persistent(dev): |
184 | a83f5185 | Nikos Skalkotos | # This is not always correct. Grub may contain root entries
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185 | a83f5185 | Nikos Skalkotos | # for other systems, but we only support 1 OS per hard
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186 | a83f5185 | Nikos Skalkotos | # disk, so this shouldn't harm.
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187 | a83f5185 | Nikos Skalkotos | self.g.aug_set(root, new_root)
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188 | a83f5185 | Nikos Skalkotos | finally:
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189 | a83f5185 | Nikos Skalkotos | self.g.aug_save()
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190 | a83f5185 | Nikos Skalkotos | self.g.aug_close()
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191 | a83f5185 | Nikos Skalkotos | |
192 | a83f5185 | Nikos Skalkotos | def _persistent_fstab(self): |
193 | a83f5185 | Nikos Skalkotos | mpoints = self.g.mountpoints()
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194 | a83f5185 | Nikos Skalkotos | if len(mpoints) == 0: |
195 | a83f5185 | Nikos Skalkotos | pass # TODO: error handling |
196 | a83f5185 | Nikos Skalkotos | |
197 | a83f5185 | Nikos Skalkotos | device_dict = dict([[mpoint, dev] for dev, mpoint in mpoints]) |
198 | a83f5185 | Nikos Skalkotos | |
199 | a83f5185 | Nikos Skalkotos | root_dev = None
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200 | a83f5185 | Nikos Skalkotos | new_fstab = ""
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201 | a83f5185 | Nikos Skalkotos | fstab = self.g.cat('/etc/fstab') |
202 | a83f5185 | Nikos Skalkotos | for line in fstab.splitlines(): |
203 | a83f5185 | Nikos Skalkotos | |
204 | a83f5185 | Nikos Skalkotos | line, dev, mpoint = self._convert_fstab_line(line, device_dict)
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205 | a83f5185 | Nikos Skalkotos | new_fstab += "%s\n" % line
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206 | a83f5185 | Nikos Skalkotos | |
207 | a83f5185 | Nikos Skalkotos | if mpoint == '/': |
208 | a83f5185 | Nikos Skalkotos | root_dev = dev |
209 | a83f5185 | Nikos Skalkotos | |
210 | a83f5185 | Nikos Skalkotos | self.g.write('/etc/fstab', new_fstab) |
211 | a83f5185 | Nikos Skalkotos | if root_dev is None: |
212 | a83f5185 | Nikos Skalkotos | pass # TODO: error handling |
213 | a83f5185 | Nikos Skalkotos | |
214 | a83f5185 | Nikos Skalkotos | return root_dev
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215 | a83f5185 | Nikos Skalkotos | |
216 | a83f5185 | Nikos Skalkotos | def _convert_fstab_line(self, line, devices): |
217 | a83f5185 | Nikos Skalkotos | orig = line |
218 | a83f5185 | Nikos Skalkotos | line = line.split('#')[0].strip() |
219 | a83f5185 | Nikos Skalkotos | if len(line) == 0: |
220 | a83f5185 | Nikos Skalkotos | return orig, "", "" |
221 | a83f5185 | Nikos Skalkotos | |
222 | a83f5185 | Nikos Skalkotos | entry = line.split() |
223 | a83f5185 | Nikos Skalkotos | if len(entry) != 6: |
224 | e77e66a9 | Nikos Skalkotos | self.out.warn("Detected abnormal entry in fstab") |
225 | a83f5185 | Nikos Skalkotos | return orig, "", "" |
226 | a83f5185 | Nikos Skalkotos | |
227 | a83f5185 | Nikos Skalkotos | dev = entry[0]
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228 | a83f5185 | Nikos Skalkotos | mpoint = entry[1]
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229 | a83f5185 | Nikos Skalkotos | |
230 | a83f5185 | Nikos Skalkotos | if not self.is_persistent(dev): |
231 | a83f5185 | Nikos Skalkotos | if mpoint in devices: |
232 | a83f5185 | Nikos Skalkotos | dev = "UUID=%s" % self.get_uuid(devices[mpoint]) |
233 | a83f5185 | Nikos Skalkotos | entry[0] = dev
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234 | a83f5185 | Nikos Skalkotos | else:
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235 | a83f5185 | Nikos Skalkotos | # comment out the entry
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236 | a83f5185 | Nikos Skalkotos | entry[0] = "#%s" % dev |
237 | a83f5185 | Nikos Skalkotos | return " ".join(entry), dev, mpoint |
238 | a83f5185 | Nikos Skalkotos | |
239 | a83f5185 | Nikos Skalkotos | return orig, dev, mpoint
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240 | aa2062ba | Nikos Skalkotos | |
241 | aa2062ba | Nikos Skalkotos | # vim: set sta sts=4 shiftwidth=4 sw=4 et ai : |