xbps-casper: simplify and remove unused stuff.
- Removed support for snapshots. - Removed support for multiple images, we only support one by default "filesystem.squashfs". - Make all vars local to funcs.
This commit is contained in:
Juan RP
parent
040ed7a0cd
commit
df7f341ba1
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@ -1,309 +0,0 @@
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#! /bin/bash
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# casper-snapshot - utility to manage Debian Live systems snapshots
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#
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# This program mount a device (fallback to /tmpfs under /mnt/snapshot
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# and save the /cow (or a different dir) filesystem in it for reusing
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# in another casper session. Look at manpage for more info.
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#
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# Copyright (C) 2006 Marco Amadori <marco.amadori@gmail.com>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#
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# On Debian systems, the complete text of the GNU General Public License
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# can be found in /usr/share/common-licenses/GPL file.
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PROGRAM="`basename $0`"
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VERSION=0.0.1
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# Source casper conf
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if [ -e /etc/casper.conf ]; then
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. /etc/casper.conf
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else
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USERNAME=$(cat /etc/passwd | grep "999" | cut -f1 -d ':')
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HOSTNAME=$(hostname)
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BUILD_SYSTEM="Debian"
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fi
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export USERNAME USERFULLNAME HOSTNAME BUILD_SYSTEM
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# Source helper functions
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helpers="/usr/share/initramfs-tools/scripts/casper-helpers"
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if [ -e "${helpers}" ]; then
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. "${helpers}"
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else
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echo "Error: I cannot found helper functions \"${helpers}\"."
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exit 1
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fi
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# Define LSB log_* functions.
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# Depend on lsb-base (>= 3.0-6) to ensure that this file is present.
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. /lib/lsb/init-functions
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MOUNTP=""
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COW=""
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DEV=""
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DEST=""
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TYPE=""
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DESKTOP_LINK=""
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Header ()
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{
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echo "${PROGRAM} - utility to do Debian Live snapshots"
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echo
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echo "Usage: ${PROGRAM} [-c|--cow DIRECTORY] [-d|--device DEVICE] [-o|--output FILE] [-t|--type TYPE]"
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echo "Usage: ${PROGRAM} [-r|--resync-string STRING]"
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echo "Usage: ${PROGRAM} [-h|--help]"
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echo "Usage: ${PROGRAM} [-u|--usage]"
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echo "Usage: ${PROGRAM} [-v|--version]"
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}
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Usage ()
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{
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MESSAGE=${1}
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Header
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echo
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echo "Try \"${PROGRAM} --help\" for more information."
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if [ ! -z "${MESSAGE}" ]; then
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echo -e "${MESSAGE}"
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exit 1
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else
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exit 0
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fi
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}
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Help ()
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{
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Header
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echo
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echo "Options:"
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echo " -c, --cow: specifies the copy on write directory (default: /cow)."
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echo " -d, --device: specifies the output snapshot device (default: none)."
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echo " -o, --output: specifies the output image file (default: $type dependent)."
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echo " -r, --resync-string: internally used to resync previous made snapshots."
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echo " -t, --type: specifies the snapshot type between \"squashfs\", \"ext2\" or \"cpio\".gz archive (default: cpio)"
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echo -e "\nLook at casper-snapshot(1) man page for more information."
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exit 0
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}
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Version ()
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{
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echo "${PROGRAM}, version ${VERSION}"
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echo
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echo "Copyright (C) 2006 Marco Amadori <marco.amadori@gmail.com>"
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echo
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echo "This program is free software; you can redistribute it and/or modify"
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echo "it under the terms of the GNU General Public License as published by"
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echo "the Free Software Foundation; either version 2 of the License, or"
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echo "(at your option) any later version."
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echo
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echo "This program is distributed in the hope that it will be useful,"
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echo "but WITHOUT ANY WARRANTY; without even the implied warranty of"
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echo "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the"
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echo "GNU General Public License for more details."
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echo
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echo "You should have received a copy of the GNU General Public License"
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echo "along with this program; if not, write to the Free Software"
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echo "Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA"
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echo
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echo "On Debian systems, the complete text of the GNU General Public License"
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echo "can be found in /usr/share/common-licenses/GPL file."
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echo
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echo "Homepage: <http://live.debian.net/>"
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exit 0
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}
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Do_snapshot ()
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{
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case "${TYPE}" in
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squashfs)
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echo "./tmp/exclude_list" > /tmp/exclude_list
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( cd "${COW}" && find . -name '*.wh.*' >> /tmp/exclude_list )
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mksquashfs "${COW}" "${DEST}" -ef /tmp/exclude_list || exit 1
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rm /tmp/exclude_list
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;;
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cpio)
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( cd "${COW}" && find . -path '*.wh.*' -prune -o -print0 | cpio --quiet -o0 -H newc | gzip -9c > "${DEST}" ) || exit 1
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;;
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ext2)
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DU_DIM="`du -ks ${COW} | cut -f1`"
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REAL_DIM="`expr ${DU_DIM} + ${DU_DIM} / 20`" # Just 5% more to be sure, need something more sophistcated here...
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genext2fs --size-in-blocks=${REAL_DIM} --reserved-percentage=0 --root="${COW}" "${DEST}" || exit 1
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;;
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*)
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echo "Internal error."
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exit 1
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;;
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esac
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}
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Is_same_mount ()
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{
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dir1="`Base_path $1`"
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dir2="`Base_path $2`"
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if [ "${dir1}" == "${dir2}" ]; then
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return 0
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else
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return 1
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fi
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}
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Parse_args ()
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{
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# Parse command line
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ARGUMENTS="`getopt --longoptions cow:,device:,output,resync-string:,type:,help,usage,version --name=${PROGRAM} --options c:d:o:t:r:,h,u,v --shell sh -- "$@"`"
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if [ "$?" != "0" ]; then
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echo "Terminating." >&2
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exit 1
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fi
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eval set -- "${ARGUMENTS}"
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while true; do
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case "$1" in
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-c|--cow)
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SNAP_COW="$2"; shift 2 ;;
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-d|--device)
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SNAP_DEV="$2"; shift 2 ;;
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-o|--output)
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SNAP_OUTPUT="$2"; shift 2 ;;
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-t|--type)
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SNAP_TYPE="$2"; shift 2 ;;
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-r|--resync-string)
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SNAP_RSTRING="$2"; break ;;
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-h|--help)
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Help; shift ;;
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-u|--usage)
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Usage ; shift ;;
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-v|--version)
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Version; shift ;;
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--)
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shift; break ;;
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*)
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echo "Internal error."; exit 1 ;;
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esac
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done
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}
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Mount_device ()
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{
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dev="$1"
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if [ ! -d "${MOUNTP}" ]; then
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mkdir -p "${MOUNTP}"
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fi
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if [ -z "${dev}" ]; then
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# create a temp
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mount -t tmpfs -o rw tmpfs "${MOUNTP}"
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if [ ! -L /home/$USERNAME/Desktop/casper-snapshot ]; then
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ln -s "${MOUNTP}" /home/$USERNAME/Desktop/casper-snapshot
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fi
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else
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if [ -b "${dev}" ] ; then
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try_mount "${dev}" "${MOUNTP}" rw
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fi
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fi
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}
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Defaults ()
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{
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MOUNTP="/mnt/casper-snapshot"
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COW="/cow"
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DEV=""
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TYPE="cpio"
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DESKTOP_LINK=/home/$USERNAME/Desktop/casper-snapshot
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if [ -n "${SNAP_RSTRING}" ]; then
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COW=$(echo "${SNAP_RSTRING}" | cut -f1 -d ':')
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DEV=$(echo "${SNAP_RSTRING}" | cut -f2 -d ':')
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DEST="${MOUNTP}/$(echo "${SNAP_RSTRING}" | cut -f3 -d ':')"
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case "${DEST}" in
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*.cpio.gz)
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TYPE="cpio" ;;
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*.squashfs)
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TYPE="squashfs" ;;
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"")
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TYPE="ext2" ;;
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*.ext2)
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TYPE="ext2" ;;
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*)
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Usage "Unrecognized String" ;;
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esac
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else
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DEF_COW="/cow"
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# Bad options handling
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if [ -z "${SNAP_COW}" ]; then
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COW="${DEF_COW}"
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else
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COW="${SNAP_COW}"
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fi
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case "${SNAP_TYPE}" in
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"cpio"|"squashfs"|"ext2")
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TYPE="${SNAP_TYPE}"
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;;
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"")
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TYPE="cpio" ;;
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*)
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Usage "Error: unrecognized snapshot type"
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;;
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esac
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case "${TYPE}" in
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cpio)
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DEST="${MOUNTP}/casper-sn.cpio.gz" ;;
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squashfs)
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DEST="${MOUNTP}/casper-sn.squashfs" ;;
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ext2)
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DEST="${MOUNTP}/casper-sn.ext2" ;;
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*)
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echo "Internal error."
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exit 1
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;;
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esac
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#if [ -d
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#if Is_same_mount
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fi
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# check vars
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if [ ! -d "${COW}" ]; then
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Usage "Error: ${COW} is not a directory"
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fi
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Mount_device $DEV
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}
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Clean ()
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{
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if [ -n "$DEV" ]; then
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umount "${MOUNTP}"
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rmdir "${MOUNTP}"
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rm
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fi
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}
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Main ()
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{
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Parse_args "$@"
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Defaults
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Do_snapshot
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Clean
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}
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Main "$@"
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@ -1 +0,0 @@
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COMPCACHE_SIZE="25%"
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@ -58,7 +58,7 @@ manual_add_modules sbp2
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manual_add_modules ohci1394
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# Casper helpers.
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for helper in getty login new-uuid snapshot; do
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for helper in getty login new-uuid; do
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ln -s /sbin/casper-${helper} ${DESTDIR}/bin
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done
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cp /usr/share/initramfs-tools/scripts/casper-helpers $DESTDIR/scripts
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@ -6,11 +6,7 @@ export PATH=/usr/bin:/usr/sbin:/bin:/sbin
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mountpoint=/cdrom
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LIVE_MEDIA_PATH=casper
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root_persistence="casper-rw"
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home_persistence="home-rw"
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root_snapshot_label="casper-sn"
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home_snapshot_label="home-sn"
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LIVE_ROOTFS=filesystem.squashfs
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USERNAME=casper
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USERFULLNAME="Live session user"
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@ -30,19 +26,18 @@ if [ ! -f /casper.vars ]; then
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touch /casper.vars
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fi
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parse_cmdline() {
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parse_cmdline()
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{
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for x in $(cat /proc/cmdline); do
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case $x in
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showmounts|show-cow)
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export SHOWMOUNTS='Yes' ;;
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persistent)
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export PERSISTENT="Yes" ;;
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nopersistent)
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export PERSISTENT="" ;;
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union=*)
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export UNIONFS="${x#union=}";;
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ignore_uuid)
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IGNORE_UUID="Yes" ;;
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live-rootfs=*)
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LIVE_ROOTFS="${x#live-rootfs=}"
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export LIVE_ROOTFS
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echo "export LIVE_ROOTFS=\"$LIVE_ROOTFS\"" >> /etc/casper.conf ;;
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live-media-path=*)
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LIVE_MEDIA_PATH="${x#live-media-path=}"
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export LIVE_MEDIA_PATH
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@ -58,27 +53,27 @@ parse_cmdline() {
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fi
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}
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is_casper_path() {
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path=$1
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is_casper_path()
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{
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local path=$1
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if [ -d "$path/$LIVE_MEDIA_PATH" ]; then
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if [ "$(echo $path/$LIVE_MEDIA_PATH/*.squashfs)" != \
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"$path/$LIVE_MEDIA_PATH/*.squashfs" ] ||
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[ "$(echo $path/$LIVE_MEDIA_PATH/*.ext2)" != \
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"$path/$LIVE_MEDIA_PATH/*.ext2" ] ||
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[ "$(echo $path/$LIVE_MEDIA_PATH/*.dir)" != \
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"$path/$LIVE_MEDIA_PATH/*.dir" ]; then
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"$path/$LIVE_MEDIA_PATH/*.squashfs" ]; then
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return 0
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fi
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fi
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return 1
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}
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matches_uuid() {
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matches_uuid()
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{
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if [ "$IGNORE_UUID" ] || [ ! -e /conf/uuid.conf ]; then
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return 0
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fi
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path="$1"
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uuid="$(cat /conf/uuid.conf)"
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local path="$1"
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local uuid="$(cat /conf/uuid.conf)"
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for try_uuid_file in "$path/.disk/casper-uuid"*; do
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[ -e "$try_uuid_file" ] || continue
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try_uuid="$(cat "$try_uuid_file")"
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@ -89,44 +84,34 @@ matches_uuid() {
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return 1
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}
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get_backing_device() {
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get_backing_device()
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{
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case "$1" in
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*.squashfs|*.ext2)
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*.squashfs)
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echo $(setup_loop "$1" "loop" "/sys/block/loop*")
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;;
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*.dir)
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echo "directory"
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;;
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*)
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panic "Unrecognized casper filesystem: $1"
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;;
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esac
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}
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match_files_in_dir() {
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# Does any files match pattern $1 ?
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mount_image_in_directory()
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{
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local directory="$1"
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local rootmnt="$2"
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local pattern="$1"
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if [ "$(echo $pattern)" != "$pattern" ]; then
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return 0
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if [ ! -f "$directory/$LIVE_MEDIA_PATH/$LIVE_ROOTFS" ]; then
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panic "Cannot find $directory/$LIVE_MEDIA_PATH/$LIVE_ROOTFS"
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fi
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return 1
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}
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mount_images_in_directory() {
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directory="$1"
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rootmnt="$2"
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if match_files_in_dir "$directory/$LIVE_MEDIA_PATH/*.squashfs" ||
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match_files_in_dir "$directory/$LIVE_MEDIA_PATH/*.ext2" ||
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match_files_in_dir "$directory/$LIVE_MEDIA_PATH/*.dir"; then
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setup_unionfs "$directory/$LIVE_MEDIA_PATH" "$rootmnt"
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else
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:
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fi
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}
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is_nice_device() {
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sysfs_path="${1#/sys}"
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is_nice_device()
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{
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local sysfs_path="${1#/sys}"
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if /lib/udev/path_id "${sysfs_path}" | egrep -q "ID_PATH=(usb|pci-[^-]*-(ide|scsi|usb)|platform-orion-ehci|platform-
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mmc|platform-mxsdhci)"; then
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return 0
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@ -137,10 +122,12 @@ mmc|platform-mxsdhci)"; then
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return 1
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}
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copy_live_to() {
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copyfrom="${1}"
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copytodev="${2}"
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copyto="${copyfrom}_swap"
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copy_live_to()
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{
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local copyfrom="${1}"
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local copytodev="${2}"
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local copyto="${copyfrom}_swap"
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local size freespace mount_options free_string fstype dev
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size=$(fs_size "" ${copyfrom} "used")
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|
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@ -181,120 +168,12 @@ copy_live_to() {
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return 0
|
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}
|
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do_snap_copy ()
|
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setup_unionfs()
|
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{
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fromdev="${1}"
|
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todir="${2}"
|
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snap_type="${3}"
|
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|
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size=$(fs_size "${fromdev}" "" "used")
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|
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if [ -b "${fromdev}" ]; then
|
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# look for free mem
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if [ -n "${HOMEMOUNTED}" -a "${snap_type}" = "HOME" ]; then
|
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todev=$(cat /proc/mounts | grep -s " $(base_path ${todir}) " | awk '{print $1}' )
|
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freespace=$(df -k | grep -s ${todev} | awk '{print $4}')
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else
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freespace=$(awk '/^MemFree:/{f=$2} /^Cached:/{c=$2} END{print f+c}' /proc/meminfo)
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fi
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|
||||
tomount="/mnt/tmpsnap"
|
||||
if [ ! -d "${tomount}" ] ; then
|
||||
mkdir -p "${tomount}"
|
||||
fi
|
||||
|
||||
fstype=$(get_fstype "${fromdev}")
|
||||
if [ -n "${fstype}" ]; then
|
||||
# Copying stuff...
|
||||
mount -t "${fstype}" -o ro,noatime "${fromdev}" "${tomount}"
|
||||
cp -a "${tomount}"/* ${todir}
|
||||
umount "${tomount}"
|
||||
else
|
||||
log_warning_msg "Unrecognized fstype: ${fstype} on ${fromdev}:${snap_type}"
|
||||
fi
|
||||
|
||||
rmdir "${tomount}"
|
||||
if echo ${fromdev} | grep -qs loop; then
|
||||
losetup -d "${fromdev}"
|
||||
fi
|
||||
return 0
|
||||
else
|
||||
return 1
|
||||
[ "$quiet" != "y" ] && \
|
||||
log_warning_msg "Unable to find the snapshot ${snap_type} medium"
|
||||
fi
|
||||
}
|
||||
|
||||
try_snap ()
|
||||
{
|
||||
# Look for $snap_label.* in block devices and copy the contents to $snap_mount
|
||||
# and remember the device and filename for resync on exit in casper.init
|
||||
|
||||
snap_label="${1}"
|
||||
snap_mount="${2}"
|
||||
snap_type="${3}"
|
||||
|
||||
snapdata=$(find_files "${snap_label}.squashfs ${snap_label}.cpio.gz ${snap_label}.ext2")
|
||||
if [ ! -z "${snapdata}" ]; then
|
||||
snapdev="$(echo ${snapdata} | cut -f1 -d ' ')"
|
||||
snapback="$(echo ${snapdata} | cut -f2 -d ' ')"
|
||||
snapfile="$(echo ${snapdata} | cut -f3 -d ' ')"
|
||||
if echo "${snapfile}" | grep -qs '\(squashfs\|ext2\)'; then
|
||||
# squashfs or ext2 snapshot
|
||||
dev=$(get_backing_device "${snapback}/${snapfile}")
|
||||
if ! do_snap_copy "${dev}" "${snap_mount}" "${snap_type}"; then
|
||||
log_warning_msg "Impossible to include the ${snapfile} Snapshot"
|
||||
return 1
|
||||
fi
|
||||
else
|
||||
# cpio.gz snapshot
|
||||
# Unfortunately klibc's cpio is incompatible with the rest of
|
||||
# the world; everything else requires -u -d, while klibc doesn't
|
||||
# implement them. Try to detect whether it's in use.
|
||||
cpiopath="$(which cpio)" || true
|
||||
if [ "$cpiopath" ] && grep -aq /lib/klibc "$cpiopath"; then
|
||||
cpioargs=
|
||||
else
|
||||
cpioargs='-u -d'
|
||||
fi
|
||||
if ! (cd "${snap_mount}" && zcat "${snapback}/${snapfile}" | cpio -i $cpioargs 2>/dev/null) ; then
|
||||
log_warning_msg "Impossible to include the ${snapfile} Snapshot"
|
||||
return 1
|
||||
fi
|
||||
fi
|
||||
umount "${snapback}"
|
||||
else
|
||||
dev=$(find_cow_device "${snap_label}")
|
||||
if [ -b ${dev} ]; then
|
||||
if echo "${dev}" | grep -qs loop; then
|
||||
# strange things happens, user confused?
|
||||
snaploop=$( losetup ${dev} | awk '{print $3}' | tr -d '()' )
|
||||
snapfile=$(basename ${snaploop})
|
||||
snapdev=$(cat /proc/mounts | awk '{print $2,$1}' | grep -es "^$( dirname ${snaploop} )" | cut -f2 -d ' ')
|
||||
else
|
||||
snapdev="${dev}"
|
||||
fi
|
||||
if ! do_snap_copy "${dev}" "${snap_mount}" "${snap_type}" ; then
|
||||
log_warning_msg "Impossible to include the ${snap_label} Snapshot"
|
||||
return 1
|
||||
else
|
||||
if [ -n "${snapfile}" ]; then
|
||||
# it was a loop device, user confused
|
||||
umount ${snapdev}
|
||||
fi
|
||||
fi
|
||||
else
|
||||
log_warning_msg "Impossible to include the ${snap_label} Snapshot"
|
||||
return 1
|
||||
fi
|
||||
fi
|
||||
echo "export ${snap_type}SNAP="/cow${snap_mount#$rootmnt}":${snapdev}:${snapfile}" >> /etc/casper.conf # for resync on reboot/halt
|
||||
return 0
|
||||
}
|
||||
|
||||
setup_unionfs() {
|
||||
image_directory="$1"
|
||||
rootmnt="$2"
|
||||
local image_directory="$1"
|
||||
local rootmnt="$2"
|
||||
local croot rofsstring rofslist roopt image imagename backdev
|
||||
local fstype cowdevice cow_fstrype cow_mountopt
|
||||
|
||||
case ${UNIONFS} in
|
||||
aufs|unionfs)
|
||||
|
|
@ -306,39 +185,31 @@ setup_unionfs() {
|
|||
# move all of these away before it runs anyway. No, we're not,
|
||||
# put them in / since move-mounting them into / breaks mono and
|
||||
# some other apps.
|
||||
|
||||
croot="/"
|
||||
|
||||
# Let's just mount the read-only file systems first
|
||||
rofsstring=""
|
||||
rofslist=""
|
||||
if [ "${NETBOOT}" = "nfs" ] ; then
|
||||
roopt="nfsro" # work around a bug in nfs-unionfs locking
|
||||
elif [ "${UNIONFS}" = "aufs" ]; then
|
||||
if [ "${UNIONFS}" = "aufs" ]; then
|
||||
roopt="rr"
|
||||
else
|
||||
roopt="ro"
|
||||
fi
|
||||
|
||||
mkdir -p "${croot}"
|
||||
for image_type in "ext2" "squashfs" "dir" ; do
|
||||
for image in "${image_directory}"/*."${image_type}"; do
|
||||
imagename=$(basename "${image}")
|
||||
if [ -d "${image}" ]; then
|
||||
# it is a plain directory: do nothing
|
||||
rofsstring="${image}=${roopt}:${rofsstring}"
|
||||
rofslist="${image} ${rofslist}"
|
||||
elif [ -f "${image}" ]; then
|
||||
image="${image_directory}/${LIVE_ROOTFS}"
|
||||
imagename=$(basename "$image")
|
||||
backdev=$(get_backing_device "$image")
|
||||
fstype=$(get_fstype "${backdev}")
|
||||
if [ "${fstype}" = "unknown" ]; then
|
||||
panic "Unknown file system type on ${backdev} (${image})"
|
||||
fi
|
||||
mkdir -p "${croot}/${imagename}"
|
||||
mount -t "${fstype}" -o ro,noatime "${backdev}" "${croot}/${imagename}" || panic "Can not mount $backdev ($image) on ${croot}/${imagename}" && rofsstring="${croot}/${imagename}=${roopt}:${rofsstring}" && rofslist="${croot}/${imagename} ${rofslist}"
|
||||
fi
|
||||
done
|
||||
done
|
||||
mount -t "${fstype}" -o ro,noatime "${backdev}" "${croot}/${imagename}" \
|
||||
|| panic "Can not mount $backdev ($image) on ${croot}/${imagename}"
|
||||
|
||||
rofsstring="${croot}/${imagename}=${roopt}:${rofsstring}"
|
||||
rofslist="${croot}/${imagename} ${rofslist}"
|
||||
rofsstring=${rofsstring%:}
|
||||
|
||||
mkdir -p /cow
|
||||
|
|
@ -346,72 +217,23 @@ setup_unionfs() {
|
|||
cow_fstype="tmpfs"
|
||||
cow_mountopt="rw,noatime,mode=755"
|
||||
|
||||
# Looking for "${root_persistence}" device or file
|
||||
if [ -n "${PERSISTENT}" ]; then
|
||||
cowprobe=$(find_cow_device "${root_persistence}")
|
||||
if [ -b "${cowprobe}" ]; then
|
||||
cowdevice=${cowprobe}
|
||||
cow_fstype=$(get_fstype "${cowprobe}")
|
||||
cow_mountopt="rw,noatime"
|
||||
else
|
||||
[ "$quiet" != "y" ] && \
|
||||
log_warning_msg "Unable to find the persistent medium"
|
||||
fi
|
||||
fi
|
||||
|
||||
mount -t ${cow_fstype} -o ${cow_mountopt} ${cowdevice} \
|
||||
/cow || panic "Can not mount $cowdevice on /cow"
|
||||
mount -t ${UNIONFS} -o noatime,dirs=/cow=rw:$rofsstring \
|
||||
${UNIONFS} "$rootmnt" || panic "${UNIONFS} mount failed"
|
||||
|
||||
# Adding other custom mounts
|
||||
if [ -n "${PERSISTENT}" ]; then
|
||||
# directly mount /home
|
||||
# FIXME: add a custom mounts configurable system
|
||||
homecow=$(find_cow_device "${home_persistence}" )
|
||||
if [ -b "${homecow}" ]; then
|
||||
mount -t $(get_fstype "${homecow}") -o rw,noatime \
|
||||
"${homecow}" "${rootmnt}/home"
|
||||
# Used to proper calculate free space in do_snap_copy()
|
||||
export HOMEMOUNTED=1
|
||||
else
|
||||
[ "$quiet" != "y" ] && \
|
||||
log_warning_msg "Unable to find the persistent home medium"
|
||||
fi
|
||||
# Look for other snapshots to copy in
|
||||
try_snap "${root_snapshot_label}" "${rootmnt}" "ROOT"
|
||||
try_snap "${home_snapshot_label}" "${rootmnt}/home" "HOME"
|
||||
fi
|
||||
|
||||
if [ -n "${SHOWMOUNTS}" ]; then
|
||||
for d in ${rofslist}; do
|
||||
mkdir -p "${rootmnt}/${LIVE_MEDIA_PATH}/${d##*/}"
|
||||
case d in
|
||||
*.dir)
|
||||
# do nothing
|
||||
;;
|
||||
*)
|
||||
mount -o move "${d}" \
|
||||
"${rootmnt}/${LIVE_MEDIA_PATH}/${d##*/}"
|
||||
;;
|
||||
esac
|
||||
done
|
||||
# shows cow fs on /cow for use by casper-snapshot
|
||||
mkdir -p "${rootmnt}/cow"
|
||||
mount -o bind /cow "${rootmnt}/cow"
|
||||
fi
|
||||
|
||||
# XXX: hardcode the image name for now (xtraeme).
|
||||
# move the first mount.
|
||||
mkdir -p "${rootmnt}/rofs"
|
||||
mount -o move /filesystem.squashfs "${rootmnt}/rofs"
|
||||
mount -o move ${croot}${imagename} "${rootmnt}/rofs"
|
||||
}
|
||||
|
||||
check_dev ()
|
||||
check_dev()
|
||||
{
|
||||
sysdev="${1}"
|
||||
devname="${2}"
|
||||
skip_uuid_check="${3}"
|
||||
local sysdev="${1}"
|
||||
local devname="${2}"
|
||||
local skip_uuid_check="${3}"
|
||||
local loopdevname devuid
|
||||
|
||||
if [ -z "${devname}" ]; then
|
||||
devname=$(sys2dev "${sysdev}")
|
||||
fi
|
||||
|
|
@ -454,8 +276,11 @@ check_dev ()
|
|||
return 1
|
||||
}
|
||||
|
||||
find_livefs() {
|
||||
timeout="${1}"
|
||||
find_livefs()
|
||||
{
|
||||
local timeout="${1}"
|
||||
local devname fstype dev
|
||||
|
||||
# first look at the one specified in the command line
|
||||
if [ ! -z "${LIVEMEDIA}" ]; then
|
||||
if check_dev "null" "${LIVEMEDIA}" "skip_uuid_check"; then
|
||||
|
|
@ -484,10 +309,7 @@ find_livefs() {
|
|||
return 0
|
||||
fi
|
||||
done
|
||||
elif [ "${fstype}" = "squashfs" -o \
|
||||
"${fstype}" = "ext4" -o \
|
||||
"${fstype}" = "ext3" -o \
|
||||
"${fstype}" = "ext2" ]; then
|
||||
elif [ "${fstype}" = "squashfs" ]; then
|
||||
# This is an ugly hack situation, the block device has
|
||||
# an image directly on it. It's hopefully
|
||||
# casper, so take it and run with it.
|
||||
|
|
@ -499,7 +321,10 @@ find_livefs() {
|
|||
return 1
|
||||
}
|
||||
|
||||
mountroot() {
|
||||
mountroot()
|
||||
{
|
||||
local i livefs_root live_dest
|
||||
|
||||
parse_cmdline
|
||||
wait_for_udev 10
|
||||
|
||||
|
|
@ -510,7 +335,7 @@ mountroot() {
|
|||
|
||||
# Scan local devices for the image
|
||||
i=0
|
||||
while [ "$i" -lt 60 ]; do
|
||||
while [ "$i" -lt 10 ]; do
|
||||
livefs_root=$(find_livefs $i)
|
||||
[ -n "${livefs_root}" ] && break
|
||||
sleep 1
|
||||
|
|
@ -532,7 +357,7 @@ mountroot() {
|
|||
log_end_msg
|
||||
fi
|
||||
|
||||
mount_images_in_directory "${livefs_root}" "${rootmnt}"
|
||||
mount_image_in_directory "${livefs_root}" "${rootmnt}"
|
||||
|
||||
maybe_break casper-bottom
|
||||
log_begin_msg "Running /scripts/casper-bottom"
|
||||
|
|
|
|||
|
|
@ -1,13 +1,15 @@
|
|||
## Casper helper functions, used by casper on boot and by casper-snapshot
|
||||
## Casper helper functions, used by casper on boot.
|
||||
|
||||
MP_QUIET="-q"
|
||||
|
||||
sys2dev() {
|
||||
sys2dev()
|
||||
{
|
||||
sysdev=${1#/sys}
|
||||
echo "/dev/$(/sbin/udevadm info -q name -p ${sysdev} 2>/dev/null|| echo ${sysdev##*/})"
|
||||
}
|
||||
|
||||
subdevices() {
|
||||
subdevices()
|
||||
{
|
||||
sysblock=$1
|
||||
r=""
|
||||
for dev in "${sysblock}" "${sysblock}"/*; do
|
||||
|
|
@ -18,7 +20,8 @@ subdevices() {
|
|||
echo ${r}
|
||||
}
|
||||
|
||||
is_supported_fs () {
|
||||
is_supported_fs()
|
||||
{
|
||||
# FIXME: do something better like the scan of supported filesystems
|
||||
fstype="${1}"
|
||||
case ${fstype} in
|
||||
|
|
@ -29,11 +32,13 @@ is_supported_fs () {
|
|||
return 1
|
||||
}
|
||||
|
||||
get_fstype() {
|
||||
get_fstype()
|
||||
{
|
||||
/sbin/blkid -s TYPE -o value $1 2>/dev/null
|
||||
}
|
||||
|
||||
where_is_mounted() {
|
||||
where_is_mounted()
|
||||
{
|
||||
device=$1
|
||||
if grep -q "^$device " /proc/mounts; then
|
||||
mountpoint="$(grep "^$device " /proc/mounts | awk '{print $2; exit}')"
|
||||
|
|
@ -44,31 +49,7 @@ where_is_mounted() {
|
|||
return 1
|
||||
}
|
||||
|
||||
lastline() {
|
||||
while read lines ; do
|
||||
line=${lines}
|
||||
done
|
||||
echo "${line}"
|
||||
}
|
||||
|
||||
base_path ()
|
||||
{
|
||||
testpath="${1}"
|
||||
mounts="$(awk '{print $2}' /proc/mounts)"
|
||||
testpath="$(busybox realpath ${testpath})"
|
||||
|
||||
while true ; do
|
||||
if echo "${mounts}" | grep -qs "^${testpath}" ; then
|
||||
set -- `echo "${mounts}" | grep "^${testpath}" | lastline`
|
||||
echo ${1}
|
||||
break
|
||||
else
|
||||
testpath=`dirname $testpath`
|
||||
fi
|
||||
done
|
||||
}
|
||||
|
||||
fs_size ()
|
||||
fs_size()
|
||||
{
|
||||
# Returns used/free fs kbytes + 5% more
|
||||
# You could pass a block device as $1 or the mount point as $2
|
||||
|
|
@ -147,73 +128,3 @@ setup_loop() {
|
|||
panic "No loop devices available"
|
||||
fi
|
||||
}
|
||||
|
||||
try_mount ()
|
||||
{
|
||||
dev="${1}"
|
||||
mountp="${2}"
|
||||
opts="${3}"
|
||||
|
||||
if where_is_mounted ${dev} > /dev/null; then
|
||||
if [ "${opts}" != "ro" ]; then
|
||||
mount -o remount,"${opts}" ${dev} $(where_is_mounted ${dev}) || panic "Remounting failed"
|
||||
fi
|
||||
mount -o bind $(where_is_mounted ${dev}) ${mountp} || panic "Cannot bind-mount"
|
||||
else
|
||||
mount -t $(get_fstype "${dev}") -o "${opts}" "${dev}" "${mountp}" || panic "Cannot mount ${dev} on ${mountp}"
|
||||
fi
|
||||
}
|
||||
|
||||
find_cow_device() {
|
||||
pers_label="${1}"
|
||||
cow_backing="/${pers_label}-backing"
|
||||
for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -v loop); do
|
||||
for dev in $(subdevices "${sysblock}"); do
|
||||
devname=$(sys2dev "${dev}")
|
||||
if [ "$(/sbin/blkid -s LABEL -o value $devname 2>/dev/null)" = "${pers_label}" ]; then
|
||||
echo "$devname"
|
||||
return
|
||||
# Do not add any filesystem types here that might be able to
|
||||
# mount a journalled filesystem and replay the journal. Doing so
|
||||
# will cause data loss when a live CD is booted on a system
|
||||
# where filesystems are in use by hibernated operating systems.
|
||||
elif [ "$(get_fstype ${devname})" = "vfat" ]; then
|
||||
mkdir -p "${cow_backing}"
|
||||
try_mount "${devname}" "${cow_backing}" "rw"
|
||||
if [ -e "${cow_backing}/${pers_label}" ]; then
|
||||
echo $(setup_loop "${cow_backing}/${pers_label}" "loop" "/sys/block/loop*")
|
||||
return 0
|
||||
else
|
||||
umount ${cow_backing}
|
||||
fi
|
||||
fi
|
||||
done
|
||||
done
|
||||
}
|
||||
|
||||
find_files()
|
||||
# return the first of $filenames found on vfat and ext2 devices
|
||||
# FIXME: merge with above function
|
||||
{
|
||||
filenames="${1}"
|
||||
snap_backing="/snap-backing"
|
||||
for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -v loop); do
|
||||
for dev in $(subdevices "${sysblock}"); do
|
||||
devname=$(sys2dev "${dev}")
|
||||
devfstype="$(get_fstype ${devname})"
|
||||
if [ "${devfstype}" = "vfat" ] || [ "${devfstype}" = "ext2" ] ; then # FIXME: all supported block devices should be scanned
|
||||
mkdir -p "${snap_backing}"
|
||||
try_mount "${devname}" "${snap_backing}" "ro"
|
||||
for filename in ${filenames}; do
|
||||
if [ -e "${snap_backing}/${filename}" ]; then
|
||||
echo "${devname} ${snap_backing} ${filename}"
|
||||
return 0
|
||||
fi
|
||||
done
|
||||
umount ${snap_backing}
|
||||
fi
|
||||
done
|
||||
done
|
||||
}
|
||||
|
||||
|
||||
|
|
|
|||
|
|
@ -1,6 +1,6 @@
|
|||
# Template file for 'xbps-casper'
|
||||
pkgname=xbps-casper
|
||||
_localver=0.16 # XBPS package version
|
||||
_localver=0.17 # XBPS package version
|
||||
_distver=1.236 # This should match the upstream (Ubuntu) version
|
||||
version=${_localver}.${_distver}
|
||||
build_style=custom-install
|
||||
|
|
@ -30,12 +30,10 @@ do_install()
|
|||
|
||||
# initramfs-tools hooks/scripts
|
||||
initramfsdir=${DESTDIR}/usr/share/initramfs-tools
|
||||
install -d ${initramfsdir}/hooks ${initramfsdir}/scripts/casper-bottom \
|
||||
${initramfsdir}/conf.d
|
||||
install -d ${initramfsdir}/hooks ${initramfsdir}/scripts/casper-bottom
|
||||
install -m 755 ${FILESDIR}/hooks/* ${initramfsdir}/hooks
|
||||
install -m 755 ${FILESDIR}/scripts/casper-bottom/* \
|
||||
${initramfsdir}/scripts/casper-bottom
|
||||
install -m 644 ${FILESDIR}/scripts/{casper,casper-helpers} \
|
||||
${initramfsdir}/scripts
|
||||
install -m 644 ${FILESDIR}/conf.d/* ${initramfsdir}/conf.d
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue