diff options
Diffstat (limited to 'src/chroot-tools/librechroot')
| -rwxr-xr-x | src/chroot-tools/librechroot | 208 |
1 files changed, 134 insertions, 74 deletions
diff --git a/src/chroot-tools/librechroot b/src/chroot-tools/librechroot index 7f113f5..368ecc1 100755 --- a/src/chroot-tools/librechroot +++ b/src/chroot-tools/librechroot @@ -3,7 +3,7 @@ # Copyright 2010 Nicolás Reynolds # Copyright 2011 Joshua Haase -# Copyright 2012 Luke Shumaker +# Copyright 2012-2013 Luke Shumaker # # This file is part of Parabola. # @@ -23,20 +23,41 @@ . /usr/share/libretools/conf.sh load_conf_libretools_chroot -. "$(which libremessages)" +. libremessages . /usr/share/devtools/makechrootpkg.sh -cleanup=(':'); -cleanup() { - for cmd in "${cleanup[@]}"; do - $cmd - done -} +# Because the makechrootpkg.sh library functions don't work with -euE +normshell() ( + set +euE + "$@" +) cmd=${0##*/} usage() { - echo "Usage: $cmd [OPTIONS] " - echo 'Interacts with a chroot.' + echo "Usage: $cmd [OPTIONS] COMMAND [ARGS...]" + echo 'Interacts with an archroot (arch chroot).' + echo '' + echo 'There may be multiple chroots; they are stored in $CHROOTDIR.' + echo '' + echo 'Each chroot is named; the default is configured with $CHROOT.' + echo '' + echo "Each named chroot has a master clean copy (named 'root'), and any" + echo 'number of other named copies; the copy used by default is the' + echo "current username (or \$SUDO_USER, or 'copy' if root)." + echo '' + echo 'The full path to the chroot copy is "$CHROOTDIR/$CHROOT/$COPY",' + echo 'Unless the copy name is manually specified as an absolute path,' + echo 'in which case, that path is used.' + echo '' + echo 'The current settings for the above varibles are:' + echo " CHROOTDIR : $CHROOTDIR" + echo " CHROOT : $CHROOT" + echo " COPY : $COPY" + echo " root path : $rootdir" + echo " copy path : $copydir" + echo '' + echo 'If the chroot, or copy does not exist, it will be created' + echo 'automatically.' echo '' echo 'This command will make the following configuration changes in' echo 'the chroot:' @@ -44,81 +65,104 @@ usage() { echo " - overwrite \`/etc/pacman.d/mirrorlist'" echo " - set \`CacheDir' in \`/etc/pacman.conf'" echo '' + echo 'Creating a copy, deleting a copy, or syncing a copy can be fairly' + echo 'slow; but are very fast if $CHROOTDIR is on a btrfs partition.' + echo '' echo 'Options:' - echo ' Settings:' - echo " -n <CHROOT> Use this chroot instead of \`$CHROOT'" - echo " -l <COPY> Use this chroot copy instead \`$CHROOTCOPY'" + echo ' -n <CHROOT> Name of the chroot to use' + echo ' -l <COPY> Name of, or absolute path to, the copy to use' echo ' -N Disable networking in the chroot' + echo ' -C <file> Location of pacman config file' + echo ' -M <file> Location of makepkg config file' echo '' - echo ' Modes: (the last mode given will be used)' - echo ' -C Clean /repo in the chroot' - echo ' -c Clean the packages installed in the chroot' - echo ' -I <FILE> Install the package FILE into the chroot' - echo ' -i <PKG> Install the package PKG from repos into the chroot' - echo ' -m Make sure the chroot exists; do nothing else' - echo ' -r <CMD> Run CMD in the chroot' - echo " -s Sync the copy with the \`root' copy" - echo ' -u Update the chroot' - echo ' -h Show this message' + echo 'Commands:' + echo ' Create/copy/delete:' + echo ' noop|make Do not do anything, but still creates the' + echo ' chroot copy if it does not exist' + echo " sync Sync the copy with the clean ('root') copy" + echo " delete delete the chroot copy" + echo ' Dealing with packages:' + echo ' install-file FILES... Like `pacman -U FILES...`' + echo ' install-name NAMES... Like `pacman -S NAMES...`' + echo ' update Like `pacman -Syu`' + echo ' clean-pkgs Remove all "exta" packages from the chroot copy' + echo ' Other:' + echo ' run CMD... Run CMD in the chroot copy' + echo ' enter Enter an interactive shell in the chroot copy' + echo ' clean-repo Clean /repo in the chroot copy' + echo ' help Show this message' # usage } +# Globals: $CHROOTDIR, $CHROOT, $COPY, $rootdir and $copydir main() { - CHROOTCOPY=$LIBREUSER - [[ $CHROOTCOPY != root ]] || CHROOTCOPY=copy + COPY=$LIBREUSER + [[ $COPY != root ]] || COPY=copy + + # defaults + rootdir="${CHROOTDIR}/${CHROOT}/root" + copydir="${CHROOTDIR}/${CHROOT}/${COPY}" local mode=enter - local archroot_args=(-f) - local ARG='' - while getopts 'n:l:NCcI:i:mr:suh' arg; do + local archroot_args=() # not local + while getopts 'n:l:NC:M:' arg; do case $arg in n) CHROOT=$OPTARG;; - l) CHROOTCOPY=$OPTARG;; - N) archroot_args+=(-N);; - - C) mode=clean_repo;; - c) mode=clean_pacman;; - I) mode=install_file; ARG=$OPTARG;; - i) mode=install_pkg; ARG=$OPTARG;; - m) mode=noop;; - r) mode=run; ARG=$OPTARG;; - s) mode=sync;; - u) mode=update;; - - h) usage; exit 0;; - *) usage; exit 1;; + l) COPY=$OPTARG;; + N) + # We do this so that it carries through to + # chroot_* functions + archroot() { + $(which archroot) -N "$@" + } + ;; + C|M) archroot_args+=(-$arg "$OPTARG");; + *) usage; return 1;; esac done shift $(($OPTIND - 1)) - if [[ $# > 0 ]]; then + if [[ $# < 1 ]]; then + error "Must specify a command" usage - exit 1 + return 1 fi + mode=$1 + shift - # not local rootdir="${CHROOTDIR}/${CHROOT}/root" - copydir="${CHROOTDIR}/${CHROOT}/${CHROOTCOPY}" + if [[ ${COPY:0:1} = / ]]; then + copydir=$COPY + else + copydir="${CHROOTDIR}/${CHROOT}/${COPY}" + fi ######################################################################## + if [[ $mode == help ]]; then + usage + return 0 + fi + if (( EUID )); then - error "This script must be run as root." - exit 1 + error "This program must be run as root." + return 1 fi + umask 0022 + # Keep this lock as long as we are running # Note that '9' is the same FD number as in (mk)archroot lock_open_write 9 "$copydir" \ "Waiting for existing lock on \`$copydir' to be released" if [[ ! -d $rootdir ]]; then - libremkchroot "$CHROOT" + archroot "${archroot_args[@]}" -m "$rootdir" fi - if [[ ! -d $copydir ]] && [[ $mode != sync ]]; then - chroot_sync + if [[ ! -d $copydir ]] || [[ $mode == sync ]]; then + normshell chroot_sync "$CHROOTDIR/$CHROOT" "$COPY" fi - mkdir -p $copydir/etc/libretools.d + mkdir -p "$copydir/etc/libretools.d" { if [[ -n ${CHROOTEXTRAPKG[@]:-} ]]; then printf 'CHROOTEXTRAPKG=(' @@ -127,37 +171,53 @@ main() { else printf 'CHROOTEXTRAPKG=()\n' fi - } > $copydir/etc/libretools.d/chroot.conf + } > "$copydir"/etc/libretools.d/chroot.conf + + if [[ $mode != delete ]]; then + # "touch" the chroot first + # this will + # - overwrite \`/etc/pacman.d/mirrorlist'" + # - set \`CacheDir' in \`/etc/pacman.conf'" + # - apply -C or -M flags + archroot "${archroot_args[@]}" -r "$copydir" true + fi ######################################################################## - trap cleanup EXIT case "$mode" in - clean_repo) + # Creat/copy/delete + noop|make|sync) :;; + delete) + if [[ -d $copydir ]]; then + normshell chroot_delete "$copydir" + fi + ;; + + # Dealing with packages + install-file) normshell chroot_install_pkgs "$copydir" "$@";; + install-name) archroot -r "$copydir" pacman -Sy "$@";; + clean-pkgs) + trap "rm -f '$copydir'/clean '$copydir'/chrootexec" EXIT + cp -a "$(which chcleanup)" "$copydir/clean" + echo '#!/bin/bash' > "$copydir/chrootexec" + echo 'mkdir /build' >> "$copydir/chrootexec" + echo 'cd /build; /clean' >> "$copydir/chrootexec" + chmod 755 "$copydir/chrootexec" + archroot -r "$copydir" /chrootexec + ;; + + # Other + run) archroot -r "$copydir" "$@";; + enter) archroot -r "$copydir" bash;; + clean-repo) rm -rf "${copydir}/repo/*" bsdtar -czf "${copydir}/repo/repo.db.tar.gz" -T /dev/null ln -s "repo.db.tar.gz" "${copydir}/repo/repo.db" ;; - clean_pacman) - cleanup+=("rm -f $copydir/clean $copydir/chrootexec") - cp -a "$(which chcleanup)" "${copydir}/clean" - echo '#!/bin/bash' > "${copydir}/chrootexec" - echo 'mkdir /build' >> "${copydir}/chrootexec" - echo 'cd /build; /clean' >> "${copydir}/chrootexec" - chmod 755 "${copydir}/chrootexec" - archroot "${archroot_args[@]}" "${copydir}" -r /chrootexec - ;; - install_file) - cleanup+=("rm $copydir/${ARG##*/}") - cp "$ARG" "$copydir/${ARG##*/}" - archroot "${archroot_args[@]}" "${copydir}" -r "pacman -U /${ARG##*/} --noconfirm" + *) + error "Unrecognized command: \`$mode'" + return 1 ;; - install_pkg) archroot "${archroot_args[@]}" "${copydir}" -i $ARG ;; - noop) :;; - run) archroot "${archroot_args[@]}" "${copydir}" -r "$ARG" ;; - sync) chroot_sync;; - update) archroot "${archroot_args[@]}" "${copydir}" -u ;; - enter) archroot "${archroot_args[@]}" "${copydir}" -r bash ;; esac } |