1 | <sect1 id="ch07-mountfs">
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2 | <title>Creating the mountfs script</title>
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3 |
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4 | <para>
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5 | A new file <filename>/etc/init.d/mountfs</filename> is created containing
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6 | the following:
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7 | </para>
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8 |
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9 | <literallayout>
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10 | <userinput>cat > mountfs << "EOF"</userinput>
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11 | #!/bin/sh
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12 | # Begin /etc/init.d/mountfs
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13 |
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14 | #
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15 | # Include the functions declared in the /etc/init.d/functions file
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16 | #
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17 |
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18 | source /etc/init.d/functions
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19 |
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20 | case "$1" in
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21 | start)
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22 |
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23 | #
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24 | # Remount the root partition in read-write mode. -n tells mount
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25 | # not to
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26 | # write to the /etc/mtab file (because it can't do this. The
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27 | # root
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28 | # partition is most likely still mounted in read-only mode
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29 | #
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30 |
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31 | echo -n "Remounting root file system in read-write mode..."
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32 | /bin/mount -n -o remount,rw /
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33 | evaluate_retval
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34 |
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35 | #
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36 | # First empty the /etc/mtab file. Then remount root partition
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37 | # in read-write
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38 | # mode again but pass -f to mount. This way mount does
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39 | # everything
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40 | # except the mount itself. This is needed for it to write to the
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41 | # mtab
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42 | # file which contains a list of currently mounted file systems.
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43 | #
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44 |
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45 | echo > /etc/mtab
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46 | /bin/mount -f -o remount,rw /
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47 |
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48 | #
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49 | # Remove the possible /fastboot and /forcefsck files. they are
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50 | # only
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51 | # supposed to be used during the next reboot's checkfs which just
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52 | # happened. If you want to fastboot or forcefsck again you'll
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53 | # have to
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54 | # recreate the files
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55 | #
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56 |
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57 | /bin/rm -f /fastboot /forcefsck
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58 |
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59 | #
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60 | # Walk through /etc/fstab and mount all file systems that don't
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61 | # have the noauto option set in the fs_mntops field (the 4th
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62 | # field.
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63 | # See man fstab for more info)
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64 | #
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65 |
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66 | echo -n "Mounting other file systems..."
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67 | /bin/mount -a
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68 | evaluate_retval
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69 | ;;
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70 |
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71 | stop)
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72 |
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73 | #
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74 | # Deactivate all the swap partitions
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75 | #
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76 |
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77 | echo -n "Deactivating swap..."
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78 | /sbin/swapoff -a
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79 | evaluate_retval
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80 |
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81 | #
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82 | # And unmount all the file systems, mounting the root file
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83 | # system
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84 | # read-only (all are unmounted but because root can't be
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85 | # unmounted
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86 | # at this point mount will automatically mount it read-only
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87 | # which
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88 | # is what supposed to happen. This way no data can be written
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89 | # anymore from disk)
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90 | #
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91 |
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92 | echo -n "Unmounting file systems..."
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93 | /bin/umount -a -r
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94 | evaluate_retval
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95 | ;;
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96 |
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97 | *)
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98 | echo "Usage: $0 {start|stop}"
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99 | exit 1
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100 | ;;
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101 | esac
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102 |
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103 | # End /etc/init.d/mountfs
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104 | <userinput>EOF</userinput>
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105 | </literallayout>
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106 |
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107 | </sect1>
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108 |
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