root / image_creator / os_type / linux.py @ d144e954
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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 | aa2062ba | Nikos Skalkotos | from image_creator.os_type.unix import Unix |
35 | 22a6d232 | Nikos Skalkotos | from image_creator.util import warn |
36 | 22a6d232 | Nikos Skalkotos | |
37 | 22a6d232 | Nikos Skalkotos | from clint.textui import puts, indent |
38 | 22a6d232 | Nikos Skalkotos | |
39 | a83f5185 | Nikos Skalkotos | import re |
40 | 3f70f242 | Nikos Skalkotos | import time |
41 | aa2062ba | Nikos Skalkotos | |
42 | 8c574358 | Nikos Skalkotos | |
43 | aa2062ba | Nikos Skalkotos | class Linux(Unix): |
44 | a83f5185 | Nikos Skalkotos | def __init__(self, rootdev, ghandler): |
45 | a83f5185 | Nikos Skalkotos | super(Linux, self).__init__(rootdev, ghandler) |
46 | a83f5185 | Nikos Skalkotos | self._uuid = dict() |
47 | a83f5185 | Nikos Skalkotos | self._persistent = re.compile('/dev/[hsv]d[a-z][1-9]*') |
48 | a83f5185 | Nikos Skalkotos | |
49 | a83f5185 | Nikos Skalkotos | def is_persistent(self, dev): |
50 | a83f5185 | Nikos Skalkotos | return not self._persistent.match(dev) |
51 | a83f5185 | Nikos Skalkotos | |
52 | a83f5185 | Nikos Skalkotos | def get_uuid(self, dev): |
53 | a83f5185 | Nikos Skalkotos | if dev in self._uuid: |
54 | a83f5185 | Nikos Skalkotos | return self._uuid[dev] |
55 | a83f5185 | Nikos Skalkotos | |
56 | a83f5185 | Nikos Skalkotos | for attr in self.g.blkid(dev): |
57 | a83f5185 | Nikos Skalkotos | if attr[0] == 'UUID': |
58 | a83f5185 | Nikos Skalkotos | self._uuid[dev] = attr[1] |
59 | a83f5185 | Nikos Skalkotos | return attr[1] |
60 | a83f5185 | Nikos Skalkotos | |
61 | 3f70f242 | Nikos Skalkotos | def sysprep_acpid(self, print_header=True): |
62 | d144e954 | Nikos Skalkotos | """Replace acpid powerdown action scripts to immediately shutdown the
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63 | d144e954 | Nikos Skalkotos | system without checking if a GUI is running.
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64 | 9cbb5794 | Nikos Skalkotos | """
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65 | 22a6d232 | Nikos Skalkotos | |
66 | 3f70f242 | Nikos Skalkotos | if print_header:
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67 | 3f70f242 | Nikos Skalkotos | print 'Fixing acpid powerdown action' |
68 | 3f70f242 | Nikos Skalkotos | |
69 | 3f70f242 | Nikos Skalkotos | powerbtn_action = '#!/bin/sh\n\nPATH=/sbin:/bin:/usr/bin\n' \
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70 | 3f70f242 | Nikos Skalkotos | 'shutdown -h now \"Power button pressed\"'
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71 | 3f70f242 | Nikos Skalkotos | |
72 | 3f70f242 | Nikos Skalkotos | events_dir = '/etc/acpi/events'
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73 | 3f70f242 | Nikos Skalkotos | if not self.g.is_dir(events_dir): |
74 | 3f70f242 | Nikos Skalkotos | warn("No acpid event directory found")
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75 | 3f70f242 | Nikos Skalkotos | return
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76 | 3f70f242 | Nikos Skalkotos | |
77 | 3f70f242 | Nikos Skalkotos | event_exp = re.compile('event=(.+)', re.I)
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78 | 3f70f242 | Nikos Skalkotos | action_exp = re.compile('action=(.+)', re.I)
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79 | 3f70f242 | Nikos Skalkotos | for f in self.g.readdir(events_dir): |
80 | 3f70f242 | Nikos Skalkotos | if f['ftyp'] != 'r': |
81 | 3f70f242 | Nikos Skalkotos | continue
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82 | 3f70f242 | Nikos Skalkotos | |
83 | 3f70f242 | Nikos Skalkotos | fullpath = "%s/%s" % (events_dir, f['name']) |
84 | 3f70f242 | Nikos Skalkotos | event = ""
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85 | 3f70f242 | Nikos Skalkotos | action = ""
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86 | 3f70f242 | Nikos Skalkotos | for line in self.g.cat(fullpath).splitlines(): |
87 | 3f70f242 | Nikos Skalkotos | m = event_exp.match(line) |
88 | 3f70f242 | Nikos Skalkotos | if m:
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89 | 3f70f242 | Nikos Skalkotos | event = m.group(1)
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90 | 3f70f242 | Nikos Skalkotos | continue
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91 | 3f70f242 | Nikos Skalkotos | m = action_exp.match(line) |
92 | 3f70f242 | Nikos Skalkotos | if m:
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93 | 3f70f242 | Nikos Skalkotos | action = m.group(1)
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94 | 3f70f242 | Nikos Skalkotos | continue
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95 | 3f70f242 | Nikos Skalkotos | |
96 | 3f70f242 | Nikos Skalkotos | if event.strip() == "button[ /]power": |
97 | 3f70f242 | Nikos Skalkotos | if action:
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98 | 3f70f242 | Nikos Skalkotos | if not self.g.is_file(action): |
99 | 3f70f242 | Nikos Skalkotos | warn("Acpid action file: %s does not exist" % action)
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100 | 3f70f242 | Nikos Skalkotos | return
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101 | d144e954 | Nikos Skalkotos | self.g.copy_file_to_file(action, \
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102 | d144e954 | Nikos Skalkotos | "%s.orig.snf-image-creator-%d" % (action, time.time()))
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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 | 3f70f242 | Nikos Skalkotos | warn("Acpid event file %s does not contain and action")
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107 | 3f70f242 | Nikos Skalkotos | return
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108 | 3f70f242 | Nikos Skalkotos | elif event.strip() == ".*": |
109 | 3f70f242 | Nikos Skalkotos | warn("Found action `.*'. Don't know how to handle this." \
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110 | d144e954 | Nikos Skalkotos | " Please edit \%s' image file manually to make the " \
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111 | 3f70f242 | Nikos Skalkotos | "system immediatelly shutdown when an power button acpi " \
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112 | d144e954 | Nikos Skalkotos | "event occures" % action)
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113 | 3f70f242 | Nikos Skalkotos | return
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114 | 3f70f242 | Nikos Skalkotos | |
115 | 3f70f242 | Nikos Skalkotos | def sysprep_persistent_net_rules(self, print_header=True): |
116 | 9cbb5794 | Nikos Skalkotos | """Remove udev rules that will keep network interface names persistent
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117 | 9cbb5794 | Nikos Skalkotos | after hardware changes and reboots. Those rules will be created again
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118 | 9cbb5794 | Nikos Skalkotos | the next time the image runs.
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119 | 9cbb5794 | Nikos Skalkotos | """
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120 | 22a6d232 | Nikos Skalkotos | |
121 | 3f70f242 | Nikos Skalkotos | if print_header:
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122 | 3f70f242 | Nikos Skalkotos | puts('Removing persistent network interface names')
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123 | 22a6d232 | Nikos Skalkotos | |
124 | 9cbb5794 | Nikos Skalkotos | rule_file = '/etc/udev/rules.d/70-persistent-net.rules'
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125 | 9cbb5794 | Nikos Skalkotos | if self.g.is_file(rule_file): |
126 | 9cbb5794 | Nikos Skalkotos | self.g.rm(rule_file)
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127 | 9cbb5794 | Nikos Skalkotos | |
128 | 3f70f242 | Nikos Skalkotos | def sysprep_persistent_devs(self, print_header=True): |
129 | 9cbb5794 | Nikos Skalkotos | """Scan fstab and grub configuration files and replace all
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130 | 9cbb5794 | Nikos Skalkotos | non-persistent device appearences with UUIDs.
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131 | 9cbb5794 | Nikos Skalkotos | """
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132 | 22a6d232 | Nikos Skalkotos | |
133 | 3f70f242 | Nikos Skalkotos | if print_header:
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134 | 3f70f242 | Nikos Skalkotos | puts('Replacing fstab & grub non-persistent device appearences')
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135 | 22a6d232 | Nikos Skalkotos | |
136 | a83f5185 | Nikos Skalkotos | # convert all devices in fstab to persistent
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137 | a83f5185 | Nikos Skalkotos | persistent_root = self._persistent_fstab()
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138 | a83f5185 | Nikos Skalkotos | |
139 | a83f5185 | Nikos Skalkotos | # convert all devices in grub1 to persistent
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140 | a83f5185 | Nikos Skalkotos | self._persistent_grub1(persistent_root)
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141 | a83f5185 | Nikos Skalkotos | |
142 | 9cbb5794 | Nikos Skalkotos | def _persistent_grub1(self, new_root): |
143 | a83f5185 | Nikos Skalkotos | if self.g.is_file('/boot/grub/menu.lst'): |
144 | a83f5185 | Nikos Skalkotos | grub1 = '/boot/grub/menu.lst'
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145 | a83f5185 | Nikos Skalkotos | elif self.g.is_file('/etc/grub.conf'): |
146 | a83f5185 | Nikos Skalkotos | grub1 = '/etc/grub.conf'
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147 | a83f5185 | Nikos Skalkotos | else:
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148 | a83f5185 | Nikos Skalkotos | return
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149 | a83f5185 | Nikos Skalkotos | |
150 | a83f5185 | Nikos Skalkotos | self.g.aug_init('/', 0) |
151 | a83f5185 | Nikos Skalkotos | try:
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152 | a83f5185 | Nikos Skalkotos | roots = self.g.aug_match('/files%s/title[*]/kernel/root' % grub1) |
153 | a83f5185 | Nikos Skalkotos | for root in roots: |
154 | a83f5185 | Nikos Skalkotos | dev = self.g.aug_get(root)
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155 | a83f5185 | Nikos Skalkotos | if not self.is_persistent(dev): |
156 | a83f5185 | Nikos Skalkotos | # This is not always correct. Grub may contain root entries
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157 | a83f5185 | Nikos Skalkotos | # for other systems, but we only support 1 OS per hard
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158 | a83f5185 | Nikos Skalkotos | # disk, so this shouldn't harm.
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159 | a83f5185 | Nikos Skalkotos | self.g.aug_set(root, new_root)
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160 | a83f5185 | Nikos Skalkotos | finally:
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161 | a83f5185 | Nikos Skalkotos | self.g.aug_save()
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162 | a83f5185 | Nikos Skalkotos | self.g.aug_close()
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163 | a83f5185 | Nikos Skalkotos | |
164 | a83f5185 | Nikos Skalkotos | def _persistent_fstab(self): |
165 | a83f5185 | Nikos Skalkotos | mpoints = self.g.mountpoints()
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166 | a83f5185 | Nikos Skalkotos | if len(mpoints) == 0: |
167 | a83f5185 | Nikos Skalkotos | pass # TODO: error handling |
168 | a83f5185 | Nikos Skalkotos | |
169 | a83f5185 | Nikos Skalkotos | device_dict = dict([[mpoint, dev] for dev, mpoint in mpoints]) |
170 | a83f5185 | Nikos Skalkotos | |
171 | a83f5185 | Nikos Skalkotos | root_dev = None
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172 | a83f5185 | Nikos Skalkotos | new_fstab = ""
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173 | a83f5185 | Nikos Skalkotos | fstab = self.g.cat('/etc/fstab') |
174 | a83f5185 | Nikos Skalkotos | for line in fstab.splitlines(): |
175 | a83f5185 | Nikos Skalkotos | |
176 | a83f5185 | Nikos Skalkotos | line, dev, mpoint = self._convert_fstab_line(line, device_dict)
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177 | a83f5185 | Nikos Skalkotos | new_fstab += "%s\n" % line
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178 | a83f5185 | Nikos Skalkotos | |
179 | a83f5185 | Nikos Skalkotos | if mpoint == '/': |
180 | a83f5185 | Nikos Skalkotos | root_dev = dev |
181 | a83f5185 | Nikos Skalkotos | |
182 | a83f5185 | Nikos Skalkotos | self.g.write('/etc/fstab', new_fstab) |
183 | a83f5185 | Nikos Skalkotos | if root_dev is None: |
184 | a83f5185 | Nikos Skalkotos | pass # TODO: error handling |
185 | a83f5185 | Nikos Skalkotos | |
186 | a83f5185 | Nikos Skalkotos | return root_dev
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187 | a83f5185 | Nikos Skalkotos | |
188 | a83f5185 | Nikos Skalkotos | def _convert_fstab_line(self, line, devices): |
189 | a83f5185 | Nikos Skalkotos | orig = line |
190 | a83f5185 | Nikos Skalkotos | line = line.split('#')[0].strip() |
191 | a83f5185 | Nikos Skalkotos | if len(line) == 0: |
192 | a83f5185 | Nikos Skalkotos | return orig, "", "" |
193 | a83f5185 | Nikos Skalkotos | |
194 | a83f5185 | Nikos Skalkotos | entry = line.split() |
195 | a83f5185 | Nikos Skalkotos | if len(entry) != 6: |
196 | 22a6d232 | Nikos Skalkotos | warn("Detected abnormal entry in fstab")
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197 | a83f5185 | Nikos Skalkotos | return orig, "", "" |
198 | a83f5185 | Nikos Skalkotos | |
199 | a83f5185 | Nikos Skalkotos | dev = entry[0]
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200 | a83f5185 | Nikos Skalkotos | mpoint = entry[1]
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201 | a83f5185 | Nikos Skalkotos | |
202 | a83f5185 | Nikos Skalkotos | if not self.is_persistent(dev): |
203 | a83f5185 | Nikos Skalkotos | if mpoint in devices: |
204 | a83f5185 | Nikos Skalkotos | dev = "UUID=%s" % self.get_uuid(devices[mpoint]) |
205 | a83f5185 | Nikos Skalkotos | entry[0] = dev
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206 | a83f5185 | Nikos Skalkotos | else:
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207 | a83f5185 | Nikos Skalkotos | # comment out the entry
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208 | a83f5185 | Nikos Skalkotos | entry[0] = "#%s" % dev |
209 | a83f5185 | Nikos Skalkotos | return " ".join(entry), dev, mpoint |
210 | a83f5185 | Nikos Skalkotos | |
211 | a83f5185 | Nikos Skalkotos | return orig, dev, mpoint
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212 | aa2062ba | Nikos Skalkotos | |
213 | aa2062ba | Nikos Skalkotos | # vim: set sta sts=4 shiftwidth=4 sw=4 et ai : |