eab2940bf6
This reverts most code, but not the implemented functionality of commit 2fba5cb90e30f2bfab07782c9fa3b99275e769da. Requiring a config file change to still be able to install old distributions would make a bump of the major version necessary according to Semantic Versioning. Let's avoid that: The list of distributions with the old path scheme is finite and will never change again. Hence it's ok and especially backwards compatible to hardcode this list in hooks/debian/20-setup-apt. It's also less and more obvious (but not necessarily easier to read) code. But it's all in one place and not scattered over three files. And it's just one line instead like a dozen or two dozens. Closes: #972749 (kinda again)
425 lines
9.1 KiB
Bash
Executable File
425 lines
9.1 KiB
Bash
Executable File
#!/bin/sh
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#
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# Common shell functions which may be used by any hook script
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#
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# If you find that a distribution-specific hook script or two
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# are doing the same thing more than once it should be added here.
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#
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# This script also includes a logging utility which you're encouraged
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# to use.
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#
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# The routines here may be freely called from any role script(s) you
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# might develop.
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#
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# Steve
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# --
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#
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#
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# If we're running verbosely show a message, otherwise swallow it.
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#
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logMessage ()
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{
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message="$*"
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if [ -n "${verbose}" ]; then
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echo $message
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fi
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}
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#
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# Test the given condition is true, and if not abort.
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#
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# Sample usage:
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# assert "$LINENO" "${verbose}"
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#
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assert ()
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{
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lineno="?"
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if [ -n "${LINENO}" ]; then
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# our shell defines variable LINENO, great!
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lineno=$1
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shift
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fi
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if [ ! "$*" ] ; then
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echo "assert failed: $0:$lineno [$*]"
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exit
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fi
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}
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#
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# Install a number of Debian packages via apt-get including Recommends.
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#
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# We take special care so that daemons shouldn't start after installation
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# which they might otherwise do.
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#
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installDebianPackageAndRecommends ()
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{
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prefix=$1
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shift
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#
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# Log our options
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#
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logMessage "Installing Debian packages $@ to prefix ${prefix}"
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#
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# We require a package + prefix
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#
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assert "$LINENO" "${prefix}"
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#
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# Prefix must be a directory.
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#
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assert "$LINENO" -d ${prefix}
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#
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# Use policy-rc to stop any daemons from starting.
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#
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printf '#!/bin/sh\nexit 101\n' > ${prefix}/usr/sbin/policy-rc.d
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chmod +x ${prefix}/usr/sbin/policy-rc.d
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#
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# Disable the start-stop-daemon - this shouldn't be necessary
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# with the policy-rc.d addition above, however leaving it in
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# place won't hurt ..
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#
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disableStartStopDaemon ${prefix}
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#
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# Install the packages
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#
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DEBIAN_FRONTEND=noninteractive chroot ${prefix} /usr/bin/apt-get --yes install "$@" 2>&1 | sed --expression="s/\rExtracting templates from packages: [0-9]\+%//g;s/(Reading database ... \([0-9]\+%\)\?\r//g"
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#
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# Remove the policy-rc.d script.
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#
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rm -f ${prefix}/usr/sbin/policy-rc.d
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#
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# Re-enable the start-stop-daemon
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#
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enableStartStopDaemon ${prefix}
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}
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#
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# Install a number of Debian packages via apt-get, but without Recommends
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#
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# We take special care so that daemons shouldn't start after installation
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# which they might otherwise do.
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#
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# NOTE: Function not renamed with trailing "s" for compatibility reasons.
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#
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installDebianPackage ()
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{
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prefix=$1
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shift
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installDebianPackageAndRecommends ${prefix} -o APT::Install-Recommends=false "$@"
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}
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#
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# Generate a Debian-/Ubuntu-compliant menu.lst for legacy GRUB
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#
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generateDebianGrubMenuLst ()
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{
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prefix="$1"
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DOMU_ISSUE="$2"
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DOMU_KERNEL="$3"
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DOMU_RAMDISK="$4"
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#
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# Log our options
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#
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logMessage "Generating a legacy GRUB menu.lst into prefix ${prefix}"
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#
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# We require at least 3 parameters
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#
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assert "$LINENO" "${prefix}"
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assert "$LINENO" "${DOMU_ISSUE}"
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assert "$LINENO" "${DOMU_KERNEL}"
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#
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# Prefix must be a directory, kernel a file
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#
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assert "$LINENO" -d ${prefix}
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assert "$LINENO" -f "${prefix}/boot/${DOMU_KERNEL}"
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#
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# Generate a menu.lst for pygrub
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#
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mkdir -p ${prefix}/boot/grub
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cat << E_O_MENU > ${prefix}/boot/grub/menu.lst
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default 0
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timeout 2
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### BEGIN AUTOMAGIC KERNELS LIST
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## lines between the AUTOMAGIC KERNELS LIST markers will be modified
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## by the debian update-grub script except for the default options below
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## DO NOT UNCOMMENT THEM, Just edit them to your needs
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## ## Start Default Options ##
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## default kernel options
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## default kernel options for automagic boot options
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## If you want special options for specific kernels use kopt_x_y_z
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## where x.y.z is kernel version. Minor versions can be omitted.
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## e.g. kopt=root=/dev/hda1 ro
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## kopt_2_6_8=root=/dev/hdc1 ro
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## kopt_2_6_8_2_686=root=/dev/hdc2 ro
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# kopt=root=/dev/xvda2 ro elevator=noop
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## default grub root device
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## e.g. groot=(hd0,0)
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# groot=(hd0,0)
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## should update-grub create alternative automagic boot options
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## e.g. alternative=true
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## alternative=false
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# alternative=true
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## should update-grub lock alternative automagic boot options
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## e.g. lockalternative=true
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## lockalternative=false
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# lockalternative=false
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## additional options to use with the default boot option, but not with the
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## alternatives
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## e.g. defoptions=vga=791 resume=/dev/hda5
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# defoptions=
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## should update-grub lock old automagic boot options
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## e.g. lockold=false
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## lockold=true
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# lockold=false
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## altoption boot targets option
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## multiple altoptions lines are allowed
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## e.g. altoptions=(extra menu suffix) extra boot options
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## altoptions=(single-user) single
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# altoptions=(single-user mode) single
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## controls how many kernels should be put into the menu.lst
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## only counts the first occurrence of a kernel, not the
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## alternative kernel options
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## e.g. howmany=all
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## howmany=7
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# howmany=all
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## should update-grub create memtest86 boot option
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## e.g. memtest86=true
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## memtest86=false
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# memtest86=false
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## should update-grub adjust the value of the default booted system
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## can be true or false
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# updatedefaultentry=false
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## should update-grub add savedefault to the default options
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## can be true or false
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# savedefault=false
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## ## End Default Options ##
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### END DEBIAN AUTOMAGIC KERNELS LIST
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# Entries statically generated bu xen-tools upon installation. Maybe
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# removed manually if the entries above (generated by update-grub)
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# seem to work fine.
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title $DOMU_ISSUE
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root (hd0,0)
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kernel /boot/$DOMU_KERNEL root=/dev/xvda2 ro elevator=noop
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initrd /boot/$DOMU_RAMDISK
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title $DOMU_ISSUE (Single-User)
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root (hd0,0)
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kernel /boot/$DOMU_KERNEL root=/dev/xvda2 ro single elevator=noop
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initrd /boot/$DOMU_RAMDISK
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title $DOMU_ISSUE (Default Kernel)
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root (hd0,0)
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kernel /vmlinuz root=/dev/xvda2 ro elevator=noop
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initrd /initrd.img
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title $DOMU_ISSUE (Default Kernel, Single-User)
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root (hd0,0)
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kernel /vmlinuz root=/dev/xvda2 ro single elevator=noop
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initrd /initrd.img
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E_O_MENU
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}
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#
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# Disable the start-stop-daemon
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#
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disableStartStopDaemon ()
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{
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local prefix="$1"
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assert "$LINENO" "${prefix}"
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for starter in start-stop-daemon initctl; do
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local daemonfile="${prefix}/sbin/${starter}"
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if [ -e "${daemonfile}" ]; then
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mv "${daemonfile}" "${daemonfile}.REAL"
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echo '#!/bin/sh' > "${daemonfile}"
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echo "echo \"Warning: Fake ${starter} called, doing nothing\"" >> "${daemonfile}"
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chmod 755 "${daemonfile}"
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logMessage "${starter} disabled / made a stub."
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fi
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done
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}
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#
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# Enable the start-stop-daemon
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#
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enableStartStopDaemon ()
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{
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local prefix=$1
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assert "$LINENO" "${prefix}"
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for starter in start-stop-daemon initctl; do
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local daemonfile="${prefix}/sbin/${starter}"
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#
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# If the disabled file is present then enable it.
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#
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if [ -e "${daemonfile}.REAL" ]; then
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mv "${daemonfile}.REAL" "${daemonfile}"
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logMessage "${starter} restored to working order."
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fi
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done
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}
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#
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# Remove the specified Debian packages.
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#
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# NOTE: Function not renamed with trailing "s" for compatibility reasons.
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#
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removeDebianPackage ()
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{
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prefix=$1
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shift
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#
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# Log our options
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#
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logMessage "Purging Debian package $@ from prefix ${prefix}"
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#
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# We require a prefix
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#
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assert "$LINENO" "${prefix}"
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#
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# Prefix must be a directory.
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#
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assert "$LINENO" -d ${prefix}
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#
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# Purge the packages we've been given.
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#
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chroot ${prefix} /usr/bin/apt-get remove --yes --purge "$@"
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}
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#
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# Install a RPM package via yum
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#
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installRPMPackage ()
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{
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prefix=$1
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package=$2
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#
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# Log our options
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#
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logMessage "Installing RPM ${package} to prefix ${prefix}"
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#
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# We require a package + prefix
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#
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assert "$LINENO" "${package}"
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assert "$LINENO" "${prefix}"
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#
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# Prefix must be a directory.
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#
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assert "$LINENO" -d ${prefix}
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#
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# Install the package
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#
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chroot ${prefix} /usr/bin/yum -y install ${package}
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}
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# Backwards Compatibility Function
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installCentOS4Package () ( installRPMPackage "$@" )
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#
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# Functions to test if we're on a redhatesk or debianesk system
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#
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isDeb() ( [ -x $1/usr/bin/apt-get -a -x $1/usr/bin/dpkg ] )
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isYum() ( [ -x $1/usr/bin/yum ] )
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#
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# Install a package using whatever package management tool is available
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#
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installPackage ()
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{
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prefix=$1
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package=$2
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if isDeb ; then
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installDebianPackage "$@"
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elif isYum ; then
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installRPMPackage "$@"
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else
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logMessage "Unable to install package ${package}; no package manager found"
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fi
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}
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#
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# Install a package upon a gentoo system via emerge.
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#
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# TODO: STUB
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#
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installGentooPackage ()
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{
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prefix=$1
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package=$2
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#
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# Log our options
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#
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logMessage "Installing Gentoo package ${package} to prefix ${prefix}"
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logMessage "NOTE: Not doing anything - this is a stub - FIXME"
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}
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