This is in preparation for including an etcupdate tree when performing a -DNO_ROOT release image build. Although -DNO_ROOT can be passed via -M, to be useful we need to mangle the resulting METALOG to mirror the various cleanups to the tree that are done after the build (removing generated files, empty files and empty directories), so etcupdate needs its own flag. Reviewed by: jhb, pauamma Obtained from: CheriBSD Differential Revision: https://reviews.freebsd.org/D35857
1947 lines
47 KiB
Bash
Executable File
1947 lines
47 KiB
Bash
Executable File
#!/bin/sh
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#
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# SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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#
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# Copyright (c) 2010-2013 Hudson River Trading LLC
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# Written by: John H. Baldwin <jhb@FreeBSD.org>
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# $FreeBSD$
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# This is a tool to manage updating files that are not updated as part
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# of 'make installworld' such as files in /etc. Unlike other tools,
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# this one is specifically tailored to assisting with mass upgrades.
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# To that end it does not require user intervention while running.
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#
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# Theory of operation:
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#
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# The most reliable way to update changes to files that have local
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# modifications is to perform a three-way merge between the original
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# unmodified file, the new version of the file, and the modified file.
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# This requires having all three versions of the file available when
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# performing an update.
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#
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# To that end, etcupdate uses a strategy where the current unmodified
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# tree is kept in WORKDIR/current and the previous unmodified tree is
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# kept in WORKDIR/old. When performing a merge, a new tree is built
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# if needed and then the changes are merged into DESTDIR. Any files
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# with unresolved conflicts after the merge are left in a tree rooted
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# at WORKDIR/conflicts.
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#
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# To provide extra flexibility, etcupdate can also build tarballs of
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# root trees that can later be used. It can also use a tarball as the
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# source of a new tree instead of building it from /usr/src.
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# Global settings. These can be adjusted by config files and in some
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# cases by command line options.
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# TODO:
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# - automatable conflict resolution
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usage()
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{
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cat <<EOF
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usage: etcupdate [-npBFN] [-d workdir] [-r | -s source | -t tarball]
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[-A patterns] [-D destdir] [-I patterns] [-L logfile]
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[-M options] [-m make]
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etcupdate build [-BN] [-d workdir] [-s source] [-L logfile] [-M options]
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[-m make] <tarball>
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etcupdate diff [-d workdir] [-D destdir] [-I patterns] [-L logfile]
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etcupdate extract [-BN] [-d workdir] [-s source | -t tarball]
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[-D destdir] [-L logfile] [-M options] [-m make]
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etcupdate resolve [-p] [-d workdir] [-D destdir] [-L logfile]
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etcupdate revert [-d workdir] [-D destdir] [-L logfile] file ...
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etcupdate status [-d workdir] [-D destdir]
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EOF
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exit 1
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}
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# Used to write a message prepended with '>>>' to the logfile.
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log()
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{
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echo ">>>" "$@" >&3
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}
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# Used for assertion conditions that should never happen.
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panic()
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{
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echo "PANIC:" "$@"
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exit 10
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}
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# Used to write a warning message. These are saved to the WARNINGS
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# file with " " prepended.
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warn()
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{
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echo -n " " >> $WARNINGS
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echo "$@" >> $WARNINGS
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}
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# Output a horizontal rule using the passed-in character. Matches the
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# length used for Index lines in CVS and SVN diffs.
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#
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# $1 - character
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rule()
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{
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jot -b "$1" -s "" 67
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}
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# Output a text description of a specified file's type.
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#
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# $1 - file pathname.
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file_type()
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{
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stat -f "%HT" $1 | tr "[:upper:]" "[:lower:]"
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}
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# Returns true (0) if a file exists
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#
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# $1 - file pathname.
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exists()
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{
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[ -e $1 -o -L $1 ]
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}
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# Returns true (0) if a file should be ignored, false otherwise.
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#
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# $1 - file pathname
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ignore()
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{
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local pattern -
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set -o noglob
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for pattern in $IGNORE_FILES; do
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set +o noglob
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case $1 in
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$pattern)
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return 0
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;;
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esac
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set -o noglob
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done
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# Ignore /.cshrc and /.profile if they are hardlinked to the
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# same file in /root. This ensures we only compare those
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# files once in that case.
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case $1 in
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/.cshrc|/.profile)
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if [ ${DESTDIR}$1 -ef ${DESTDIR}/root$1 ]; then
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return 0
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fi
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;;
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*)
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;;
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esac
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return 1
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}
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# Returns true (0) if the new version of a file should always be
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# installed rather than attempting to do a merge.
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#
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# $1 - file pathname
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always_install()
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{
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local pattern -
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set -o noglob
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for pattern in $ALWAYS_INSTALL; do
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set +o noglob
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case $1 in
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$pattern)
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return 0
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;;
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esac
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set -o noglob
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done
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return 1
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}
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# Build a new tree. This runs inside a subshell to trap SIGINT.
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#
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# $1 - directory to store new tree in
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build_tree()
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(
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local destdir dir file make autogenfiles metatmp
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make="$MAKE_CMD $MAKE_OPTIONS -DNO_FILEMON"
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if [ -n "$noroot" ]; then
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make="$make -DNO_ROOT"
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metatmp=`mktemp $WORKDIR/etcupdate-XXXXXXX`
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: > $metatmp
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trap "rm -f $metatmp; trap '' EXIT; return 1" INT
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trap "rm -f $metatmp" EXIT
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else
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metatmp="/dev/null"
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trap "return 1" INT
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fi
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log "Building tree at $1 with $make"
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exec >&3 2>&1
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mkdir -p $1/usr/obj
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destdir=`realpath $1`
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if [ -n "$preworld" ]; then
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# Build a limited tree that only contains files that are
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# crucial to installworld.
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for file in $PREWORLD_FILES; do
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name=$(basename $file)
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mkdir -p $1/etc || return 1
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cp -p $SRCDIR/$file $1/etc/$name || return 1
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done
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elif ! [ -n "$nobuild" ]; then
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(cd $SRCDIR; $make DESTDIR=$destdir distrib-dirs &&
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MAKEOBJDIRPREFIX=$destdir/usr/obj $make _obj SUBDIR_OVERRIDE=etc &&
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MAKEOBJDIRPREFIX=$destdir/usr/obj $make everything SUBDIR_OVERRIDE=etc &&
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MAKEOBJDIRPREFIX=$destdir/usr/obj $make DESTDIR=$destdir distribution) || \
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return 1
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else
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(cd $SRCDIR; $make DESTDIR=$destdir distrib-dirs &&
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$make DESTDIR=$destdir distribution) || return 1
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fi
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chflags -R noschg $1 || return 1
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rm -rf $1/usr/obj || return 1
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# Purge auto-generated files. Only the source files need to
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# be updated after which these files are regenerated.
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autogenfiles="./etc/*.db ./etc/passwd ./var/db/services.db"
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(cd $1 && printf '%s\n' $autogenfiles >> $metatmp && \
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rm -f $autogenfiles) || return 1
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# Remove empty files. These just clutter the output of 'diff'.
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(cd $1 && find . -type f -size 0 -delete -print >> $metatmp) || \
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return 1
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# Trim empty directories.
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(cd $1 && find . -depth -type d -empty -delete -print >> $metatmp) || \
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return 1
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if [ -n "$noroot" ]; then
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# Rewrite the METALOG to exclude the files (and directories)
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# removed above. $metatmp contains the list of files to delete,
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# and we append #METALOG# as a delimiter followed by the
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# original METALOG. This lets us scan through $metatmp in awk
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# building up a table of names to delete until we reach the
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# delimiter, then emit all the entries of the original METALOG
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# after it that aren't in that table. We also exclude ./usr/obj
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# and its children explicitly for simplicity rather than
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# building up that list (and in practice only ./usr/obj itself
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# will be in the METALOG since nothing is installed there).
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echo '#METALOG#' >> $metatmp || return 1
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cat $1/METALOG >> $metatmp || return 1
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awk '/^#METALOG#$/ { metalog = 1; next }
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{ f=$1; gsub(/\/\/+/, "/", f) }
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!metalog { rm[f] = 1; next }
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!rm[f] && f !~ /^\.\/usr\/obj(\/|$)/ { print }' \
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$metatmp > $1/METALOG || return 1
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fi
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return 0
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)
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# Generate a new tree. If tarball is set, then the tree is
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# extracted from the tarball. Otherwise the tree is built from a
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# source tree.
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#
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# $1 - directory to store new tree in
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extract_tree()
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{
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local files
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# If we have a tarball, extract that into the new directory.
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if [ -n "$tarball" ]; then
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files=
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if [ -n "$preworld" ]; then
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files="$PREWORLD_FILES"
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fi
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if ! (mkdir -p $1 && tar xf $tarball -C $1 $files) \
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>&3 2>&1; then
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echo "Failed to extract new tree."
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remove_tree $1
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exit 1
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fi
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else
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if ! build_tree $1; then
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echo "Failed to build new tree."
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remove_tree $1
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exit 1
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fi
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fi
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}
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# Forcefully remove a tree. Returns true (0) if the operation succeeds.
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#
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# $1 - path to tree
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remove_tree()
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{
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rm -rf $1 >&3 2>&1
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if [ -e $1 ]; then
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chflags -R noschg $1 >&3 2>&1
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rm -rf $1 >&3 2>&1
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fi
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[ ! -e $1 ]
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}
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# Return values for compare()
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COMPARE_EQUAL=0
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COMPARE_ONLYFIRST=1
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COMPARE_ONLYSECOND=2
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COMPARE_DIFFTYPE=3
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COMPARE_DIFFLINKS=4
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COMPARE_DIFFFILES=5
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# Compare two files/directories/symlinks. Note that this does not
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# recurse into subdirectories. Instead, if two nodes are both
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# directories, they are assumed to be equivalent.
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#
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# Returns true (0) if the nodes are identical. If only one of the two
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# nodes are present, return one of the COMPARE_ONLY* constants. If
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# the nodes are different, return one of the COMPARE_DIFF* constants
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# to indicate the type of difference.
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#
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# $1 - first node
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# $2 - second node
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compare()
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{
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local first second
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# If the first node doesn't exist, then check for the second
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# node. Note that -e will fail for a symbolic link that
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# points to a missing target.
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if ! exists $1; then
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if exists $2; then
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return $COMPARE_ONLYSECOND
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else
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return $COMPARE_EQUAL
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fi
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elif ! exists $2; then
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return $COMPARE_ONLYFIRST
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fi
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# If the two nodes are different file types fail.
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first=`stat -f "%Hp" $1`
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second=`stat -f "%Hp" $2`
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if [ "$first" != "$second" ]; then
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return $COMPARE_DIFFTYPE
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fi
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# If both are symlinks, compare the link values.
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if [ -L $1 ]; then
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first=`readlink $1`
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second=`readlink $2`
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if [ "$first" = "$second" ]; then
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return $COMPARE_EQUAL
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else
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return $COMPARE_DIFFLINKS
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fi
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fi
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# If both are files, compare the file contents.
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if [ -f $1 ]; then
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if cmp -s $1 $2; then
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return $COMPARE_EQUAL
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else
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return $COMPARE_DIFFFILES
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fi
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fi
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# As long as the two nodes are the same type of file, consider
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# them equivalent.
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return $COMPARE_EQUAL
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}
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# Returns true (0) if the only difference between two regular files is a
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# change in the FreeBSD ID string.
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#
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# $1 - path of first file
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# $2 - path of second file
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fbsdid_only()
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{
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diff -qI '\$FreeBSD.*\$' $1 $2 >/dev/null 2>&1
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}
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# This is a wrapper around compare that will return COMPARE_EQUAL if
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# the only difference between two regular files is a change in the
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# FreeBSD ID string. It only makes this adjustment if the -F flag has
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# been specified.
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#
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# $1 - first node
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# $2 - second node
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compare_fbsdid()
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{
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local cmp
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compare $1 $2
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cmp=$?
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if [ -n "$FREEBSD_ID" -a "$cmp" -eq $COMPARE_DIFFFILES ] && \
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fbsdid_only $1 $2; then
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return $COMPARE_EQUAL
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fi
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return $cmp
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}
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# Returns true (0) if a directory is empty.
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#
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# $1 - pathname of the directory to check
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empty_dir()
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{
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local contents
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contents=`ls -A $1`
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[ -z "$contents" ]
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}
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# Returns true (0) if one directories contents are a subset of the
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# other. This will recurse to handle subdirectories and compares
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# individual files in the trees. Its purpose is to quiet spurious
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# directory warnings for dryrun invocations.
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#
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# $1 - first directory (sub)
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# $2 - second directory (super)
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dir_subset()
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{
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local contents file
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if ! [ -d $1 -a -d $2 ]; then
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return 1
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fi
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# Ignore files that are present in the second directory but not
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# in the first.
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contents=`ls -A $1`
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for file in $contents; do
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if ! compare $1/$file $2/$file; then
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return 1
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fi
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if [ -d $1/$file ]; then
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if ! dir_subset $1/$file $2/$file; then
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return 1
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fi
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fi
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done
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return 0
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}
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# Returns true (0) if a directory in the destination tree is empty.
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# If this is a dryrun, then this returns true as long as the contents
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# of the directory are a subset of the contents in the old tree
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# (meaning that the directory would be empty in a non-dryrun when this
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# was invoked) to quiet spurious warnings.
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#
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# $1 - pathname of the directory to check relative to DESTDIR.
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empty_destdir()
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{
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|
if [ -n "$dryrun" ]; then
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dir_subset $DESTDIR/$1 $OLDTREE/$1
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return
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fi
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empty_dir $DESTDIR/$1
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}
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|
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# Output a diff of two directory entries with the same relative name
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# in different trees. Note that as with compare(), this does not
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# recurse into subdirectories. If the nodes are identical, nothing is
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# output.
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#
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# $1 - first tree
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# $2 - second tree
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# $3 - node name
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# $4 - label for first tree
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# $5 - label for second tree
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diffnode()
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{
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local first second file old new diffargs
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if [ -n "$FREEBSD_ID" ]; then
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diffargs="-I \\\$FreeBSD.*\\\$"
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else
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diffargs=""
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fi
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compare_fbsdid $1/$3 $2/$3
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case $? in
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$COMPARE_EQUAL)
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;;
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$COMPARE_ONLYFIRST)
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|
echo
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echo "Removed: $3"
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echo
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;;
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$COMPARE_ONLYSECOND)
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echo
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echo "Added: $3"
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echo
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;;
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$COMPARE_DIFFTYPE)
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first=`file_type $1/$3`
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second=`file_type $2/$3`
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echo
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echo "Node changed from a $first to a $second: $3"
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echo
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;;
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$COMPARE_DIFFLINKS)
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first=`readlink $1/$file`
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second=`readlink $2/$file`
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echo
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echo "Link changed: $file"
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rule "="
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echo "-$first"
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echo "+$second"
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echo
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;;
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$COMPARE_DIFFFILES)
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echo "Index: $3"
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rule "="
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diff -u $diffargs -L "$3 ($4)" $1/$3 -L "$3 ($5)" $2/$3
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;;
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|
esac
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}
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|
|
# Run one-off commands after an update has completed. These commands
|
|
# are not tied to a specific file, so they cannot be handled by
|
|
# post_install_file().
|
|
post_update()
|
|
{
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|
local args
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|
|
|
# None of these commands should be run for a pre-world update.
|
|
if [ -n "$preworld" ]; then
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return
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fi
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|
|
|
# If /etc/localtime exists and is not a symlink and /var/db/zoneinfo
|
|
# exists, run tzsetup -r to refresh /etc/localtime.
|
|
if [ -f ${DESTDIR}/etc/localtime -a \
|
|
! -L ${DESTDIR}/etc/localtime ]; then
|
|
if [ -f ${DESTDIR}/var/db/zoneinfo ]; then
|
|
if [ -n "${DESTDIR}" ]; then
|
|
args="-C ${DESTDIR}"
|
|
else
|
|
args=""
|
|
fi
|
|
log "tzsetup -r ${args}"
|
|
if [ -z "$dryrun" ]; then
|
|
tzsetup -r ${args} >&3 2>&1
|
|
fi
|
|
else
|
|
warn "Needs update: /etc/localtime (required" \
|
|
"manual update via tzsetup(8))"
|
|
fi
|
|
fi
|
|
}
|
|
|
|
# Create missing parent directories of a node in a target tree
|
|
# preserving the owner, group, and permissions from a specified
|
|
# template tree.
|
|
#
|
|
# $1 - template tree
|
|
# $2 - target tree
|
|
# $3 - pathname of the node (relative to both trees)
|
|
install_dirs()
|
|
{
|
|
local args dir
|
|
|
|
dir=`dirname $3`
|
|
|
|
# Nothing to do if the parent directory exists. This also
|
|
# catches the degenerate cases when the path is just a simple
|
|
# filename.
|
|
if [ -d ${2}$dir ]; then
|
|
return 0
|
|
fi
|
|
|
|
# If non-directory file exists with the desired directory
|
|
# name, then fail.
|
|
if exists ${2}$dir; then
|
|
# If this is a dryrun and we are installing the
|
|
# directory in the DESTDIR and the file in the DESTDIR
|
|
# matches the file in the old tree, then fake success
|
|
# to quiet spurious warnings.
|
|
if [ -n "$dryrun" -a "$2" = "$DESTDIR" ]; then
|
|
if compare $OLDTREE/$dir $DESTDIR/$dir; then
|
|
return 0
|
|
fi
|
|
fi
|
|
|
|
args=`file_type ${2}$dir`
|
|
warn "Directory mismatch: ${2}$dir ($args)"
|
|
return 1
|
|
fi
|
|
|
|
# Ensure the parent directory of the directory is present
|
|
# first.
|
|
if ! install_dirs $1 "$2" $dir; then
|
|
return 1
|
|
fi
|
|
|
|
# Format attributes from template directory as install(1)
|
|
# arguments.
|
|
args=`stat -f "-o %Su -g %Sg -m %0Mp%0Lp" $1/$dir`
|
|
|
|
log "install -d $args ${2}$dir"
|
|
if [ -z "$dryrun" ]; then
|
|
install -d $args ${2}$dir >&3 2>&1
|
|
fi
|
|
return 0
|
|
}
|
|
|
|
# Perform post-install fixups for a file. This largely consists of
|
|
# regenerating any files that depend on the newly installed file.
|
|
#
|
|
# $1 - pathname of the updated file (relative to DESTDIR)
|
|
post_install_file()
|
|
{
|
|
case $1 in
|
|
/etc/mail/aliases)
|
|
# Grr, newaliases only works for an empty DESTDIR.
|
|
if [ -z "$DESTDIR" ]; then
|
|
log "newaliases"
|
|
if [ -z "$dryrun" ]; then
|
|
newaliases >&3 2>&1
|
|
fi
|
|
else
|
|
NEWALIAS_WARN=yes
|
|
fi
|
|
;;
|
|
/usr/share/certs/trusted/* | /usr/share/certs/untrusted/*)
|
|
log "certctl rehash"
|
|
if [ -z "$dryrun" ]; then
|
|
env DESTDIR=${DESTDIR} certctl rehash >&3 2>&1
|
|
fi
|
|
;;
|
|
/etc/login.conf)
|
|
log "cap_mkdb ${DESTDIR}$1"
|
|
if [ -z "$dryrun" ]; then
|
|
cap_mkdb ${DESTDIR}$1 >&3 2>&1
|
|
fi
|
|
;;
|
|
/etc/master.passwd)
|
|
log "pwd_mkdb -p -d $DESTDIR/etc ${DESTDIR}$1"
|
|
if [ -z "$dryrun" ]; then
|
|
pwd_mkdb -p -d $DESTDIR/etc ${DESTDIR}$1 \
|
|
>&3 2>&1
|
|
fi
|
|
;;
|
|
/etc/motd)
|
|
# /etc/rc.d/motd hardcodes the /etc/motd path.
|
|
# Don't warn about non-empty DESTDIR's since this
|
|
# change is only cosmetic anyway.
|
|
if [ -z "$DESTDIR" ]; then
|
|
log "sh /etc/rc.d/motd start"
|
|
if [ -z "$dryrun" ]; then
|
|
sh /etc/rc.d/motd start >&3 2>&1
|
|
fi
|
|
fi
|
|
;;
|
|
/etc/services)
|
|
log "services_mkdb -q -o $DESTDIR/var/db/services.db" \
|
|
"${DESTDIR}$1"
|
|
if [ -z "$dryrun" ]; then
|
|
services_mkdb -q -o $DESTDIR/var/db/services.db \
|
|
${DESTDIR}$1 >&3 2>&1
|
|
fi
|
|
;;
|
|
esac
|
|
}
|
|
|
|
# Install the "new" version of a file. Returns true if it succeeds
|
|
# and false otherwise.
|
|
#
|
|
# $1 - pathname of the file to install (relative to DESTDIR)
|
|
install_new()
|
|
{
|
|
|
|
if ! install_dirs $NEWTREE "$DESTDIR" $1; then
|
|
return 1
|
|
fi
|
|
log "cp -Rp ${NEWTREE}$1 ${DESTDIR}$1"
|
|
if [ -z "$dryrun" ]; then
|
|
cp -Rp ${NEWTREE}$1 ${DESTDIR}$1 >&3 2>&1
|
|
fi
|
|
post_install_file $1
|
|
return 0
|
|
}
|
|
|
|
# Install the "resolved" version of a file. Returns true if it succeeds
|
|
# and false otherwise.
|
|
#
|
|
# $1 - pathname of the file to install (relative to DESTDIR)
|
|
install_resolved()
|
|
{
|
|
|
|
# This should always be present since the file is already
|
|
# there (it caused a conflict). However, it doesn't hurt to
|
|
# just be safe.
|
|
if ! install_dirs $NEWTREE "$DESTDIR" $1; then
|
|
return 1
|
|
fi
|
|
|
|
# Use cat rather than cp to preserve metadata
|
|
log "cat ${CONFLICTS}$1 > ${DESTDIR}$1"
|
|
cat ${CONFLICTS}$1 > ${DESTDIR}$1 2>&3
|
|
post_install_file $1
|
|
return 0
|
|
}
|
|
|
|
# Generate a conflict file when a "new" file conflicts with an
|
|
# existing file in DESTDIR.
|
|
#
|
|
# $1 - pathname of the file that conflicts (relative to DESTDIR)
|
|
new_conflict()
|
|
{
|
|
|
|
if [ -n "$dryrun" ]; then
|
|
return
|
|
fi
|
|
|
|
install_dirs $NEWTREE $CONFLICTS $1
|
|
diff --changed-group-format='<<<<<<< (local)
|
|
%<=======
|
|
%>>>>>>>> (stock)
|
|
' $DESTDIR/$1 $NEWTREE/$1 > $CONFLICTS/$1
|
|
}
|
|
|
|
# Remove the "old" version of a file.
|
|
#
|
|
# $1 - pathname of the old file to remove (relative to DESTDIR)
|
|
remove_old()
|
|
{
|
|
log "rm -f ${DESTDIR}$1"
|
|
if [ -z "$dryrun" ]; then
|
|
rm -f ${DESTDIR}$1 >&3 2>&1
|
|
fi
|
|
echo " D $1"
|
|
}
|
|
|
|
# Update a file that has no local modifications.
|
|
#
|
|
# $1 - pathname of the file to update (relative to DESTDIR)
|
|
update_unmodified()
|
|
{
|
|
local new old
|
|
|
|
# If the old file is a directory, then remove it with rmdir
|
|
# (this should only happen if the file has changed its type
|
|
# from a directory to a non-directory). If the directory
|
|
# isn't empty, then fail. This will be reported as a warning
|
|
# later.
|
|
if [ -d $DESTDIR/$1 ]; then
|
|
if empty_destdir $1; then
|
|
log "rmdir ${DESTDIR}$1"
|
|
if [ -z "$dryrun" ]; then
|
|
rmdir ${DESTDIR}$1 >&3 2>&1
|
|
fi
|
|
else
|
|
return 1
|
|
fi
|
|
|
|
# If both the old and new files are regular files, leave the
|
|
# existing file. This avoids breaking hard links for /.cshrc
|
|
# and /.profile. Otherwise, explicitly remove the old file.
|
|
elif ! [ -f ${DESTDIR}$1 -a -f ${NEWTREE}$1 ]; then
|
|
log "rm -f ${DESTDIR}$1"
|
|
if [ -z "$dryrun" ]; then
|
|
rm -f ${DESTDIR}$1 >&3 2>&1
|
|
fi
|
|
fi
|
|
|
|
# If the new file is a directory, note that the old file has
|
|
# been removed, but don't do anything else for now. The
|
|
# directory will be installed if needed when new files within
|
|
# that directory are installed.
|
|
if [ -d $NEWTREE/$1 ]; then
|
|
if empty_dir $NEWTREE/$1; then
|
|
echo " D $file"
|
|
else
|
|
echo " U $file"
|
|
fi
|
|
elif install_new $1; then
|
|
echo " U $file"
|
|
fi
|
|
return 0
|
|
}
|
|
|
|
# Update the FreeBSD ID string in a locally modified file to match the
|
|
# FreeBSD ID string from the "new" version of the file.
|
|
#
|
|
# $1 - pathname of the file to update (relative to DESTDIR)
|
|
update_freebsdid()
|
|
{
|
|
local new dest file
|
|
|
|
# If the FreeBSD ID string is removed from the local file,
|
|
# there is nothing to do. In this case, treat the file as
|
|
# updated. Otherwise, if either file has more than one
|
|
# FreeBSD ID string, just punt and let the user handle the
|
|
# conflict manually.
|
|
new=`grep -c '\$FreeBSD.*\$' ${NEWTREE}$1`
|
|
dest=`grep -c '\$FreeBSD.*\$' ${DESTDIR}$1`
|
|
if [ "$dest" -eq 0 ]; then
|
|
return 0
|
|
fi
|
|
if [ "$dest" -ne 1 -o "$dest" -ne 1 ]; then
|
|
return 1
|
|
fi
|
|
|
|
# If the FreeBSD ID string in the new file matches the FreeBSD ID
|
|
# string in the local file, there is nothing to do.
|
|
new=`grep '\$FreeBSD.*\$' ${NEWTREE}$1`
|
|
dest=`grep '\$FreeBSD.*\$' ${DESTDIR}$1`
|
|
if [ "$new" = "$dest" ]; then
|
|
return 0
|
|
fi
|
|
|
|
# Build the new file in three passes. First, copy all the
|
|
# lines preceding the FreeBSD ID string from the local version
|
|
# of the file. Second, append the FreeBSD ID string line from
|
|
# the new version. Finally, append all the lines after the
|
|
# FreeBSD ID string from the local version of the file.
|
|
file=`mktemp $WORKDIR/etcupdate-XXXXXXX`
|
|
awk '/\$FreeBSD.*\$/ { exit } { print }' ${DESTDIR}$1 >> $file
|
|
awk '/\$FreeBSD.*\$/ { print }' ${NEWTREE}$1 >> $file
|
|
awk '/\$FreeBSD.*\$/ { ok = 1; next } { if (ok) print }' \
|
|
${DESTDIR}$1 >> $file
|
|
|
|
# As an extra sanity check, fail the attempt if the updated
|
|
# version of the file has any differences aside from the
|
|
# FreeBSD ID string.
|
|
if ! fbsdid_only ${DESTDIR}$1 $file; then
|
|
rm -f $file
|
|
return 1
|
|
fi
|
|
|
|
log "cp $file ${DESTDIR}$1"
|
|
if [ -z "$dryrun" ]; then
|
|
cp $file ${DESTDIR}$1 >&3 2>&1
|
|
fi
|
|
rm -f $file
|
|
post_install_file $1
|
|
echo " M $1"
|
|
return 0
|
|
}
|
|
|
|
# Attempt to update a file that has local modifications. This routine
|
|
# only handles regular files. If the 3-way merge succeeds without
|
|
# conflicts, the updated file is installed. If the merge fails, the
|
|
# merged version with conflict markers is left in the CONFLICTS tree.
|
|
#
|
|
# $1 - pathname of the file to merge (relative to DESTDIR)
|
|
merge_file()
|
|
{
|
|
local res
|
|
|
|
# Try the merge to see if there is a conflict.
|
|
diff3 -E -m ${DESTDIR}$1 ${OLDTREE}$1 ${NEWTREE}$1 > /dev/null 2>&3
|
|
res=$?
|
|
case $res in
|
|
0)
|
|
# No conflicts, so just redo the merge to the
|
|
# real file.
|
|
log "diff3 -E -m ${DESTDIR}$1 ${OLDTREE}$1 ${NEWTREE}$1"
|
|
if [ -z "$dryrun" ]; then
|
|
temp=$(mktemp -t etcupdate)
|
|
diff3 -E -m ${DESTDIR}$1 ${OLDTREE}$1 ${NEWTREE}$1 > ${temp}
|
|
# Use "cat >" to preserve metadata.
|
|
cat ${temp} > ${DESTDIR}$1
|
|
rm -f ${temp}
|
|
fi
|
|
post_install_file $1
|
|
echo " M $1"
|
|
;;
|
|
1)
|
|
# Conflicts, save a version with conflict markers in
|
|
# the conflicts directory.
|
|
if [ -z "$dryrun" ]; then
|
|
install_dirs $NEWTREE $CONFLICTS $1
|
|
log "diff3 -m ${DESTDIR}$1 ${CONFLICTS}$1"
|
|
diff3 -m -L "yours" -L "original" -L "new" \
|
|
${DESTDIR}$1 ${OLDTREE}$1 ${NEWTREE}$1 > \
|
|
${CONFLICTS}$1
|
|
fi
|
|
echo " C $1"
|
|
;;
|
|
*)
|
|
panic "merge failed with status $res"
|
|
;;
|
|
esac
|
|
}
|
|
|
|
# Returns true if a file contains conflict markers from a merge conflict.
|
|
#
|
|
# $1 - pathname of the file to resolve (relative to DESTDIR)
|
|
has_conflicts()
|
|
{
|
|
|
|
egrep -q '^(<{7}|\|{7}|={7}|>{7}) ' $CONFLICTS/$1
|
|
}
|
|
|
|
# Attempt to resolve a conflict. The user is prompted to choose an
|
|
# action for each conflict. If the user edits the file, they are
|
|
# prompted again for an action. The process is very similar to
|
|
# resolving conflicts after an update or merge with Perforce or
|
|
# Subversion. The prompts are modelled on a subset of the available
|
|
# commands for resolving conflicts with Subversion.
|
|
#
|
|
# $1 - pathname of the file to resolve (relative to DESTDIR)
|
|
resolve_conflict()
|
|
{
|
|
local command junk
|
|
|
|
echo "Resolving conflict in '$1':"
|
|
edit=
|
|
while true; do
|
|
# Only display the resolved command if the file
|
|
# doesn't contain any conflicts.
|
|
echo -n "Select: (p) postpone, (df) diff-full, (e) edit,"
|
|
if ! has_conflicts $1; then
|
|
echo -n " (r) resolved,"
|
|
fi
|
|
echo
|
|
echo -n " (h) help for more options: "
|
|
read command
|
|
case $command in
|
|
df)
|
|
diff -u ${DESTDIR}$1 ${CONFLICTS}$1
|
|
;;
|
|
e)
|
|
$EDITOR ${CONFLICTS}$1
|
|
;;
|
|
h)
|
|
cat <<EOF
|
|
(p) postpone - ignore this conflict for now
|
|
(df) diff-full - show all changes made to merged file
|
|
(e) edit - change merged file in an editor
|
|
(r) resolved - accept merged version of file
|
|
(mf) mine-full - accept local version of entire file (ignore new changes)
|
|
(tf) theirs-full - accept new version of entire file (lose local changes)
|
|
(h) help - show this list
|
|
EOF
|
|
;;
|
|
mf)
|
|
# For mine-full, just delete the
|
|
# merged file and leave the local
|
|
# version of the file as-is.
|
|
rm ${CONFLICTS}$1
|
|
return
|
|
;;
|
|
p)
|
|
return
|
|
;;
|
|
r)
|
|
# If the merged file has conflict
|
|
# markers, require confirmation.
|
|
if has_conflicts $1; then
|
|
echo "File '$1' still has conflicts," \
|
|
"are you sure? (y/n) "
|
|
read junk
|
|
if [ "$junk" != "y" ]; then
|
|
continue
|
|
fi
|
|
fi
|
|
|
|
if ! install_resolved $1; then
|
|
panic "Unable to install merged" \
|
|
"version of $1"
|
|
fi
|
|
rm ${CONFLICTS}$1
|
|
return
|
|
;;
|
|
tf)
|
|
# For theirs-full, install the new
|
|
# version of the file over top of the
|
|
# existing file.
|
|
if ! install_new $1; then
|
|
panic "Unable to install new" \
|
|
"version of $1"
|
|
fi
|
|
rm ${CONFLICTS}$1
|
|
return
|
|
;;
|
|
*)
|
|
echo "Invalid command."
|
|
;;
|
|
esac
|
|
done
|
|
}
|
|
|
|
# Handle a file that has been removed from the new tree. If the file
|
|
# does not exist in DESTDIR, then there is nothing to do. If the file
|
|
# exists in DESTDIR and is identical to the old version, remove it
|
|
# from DESTDIR. Otherwise, whine about the conflict but leave the
|
|
# file in DESTDIR. To handle directories, this uses two passes. The
|
|
# first pass handles all non-directory files. The second pass handles
|
|
# just directories and removes them if they are empty.
|
|
#
|
|
# If -F is specified, and the only difference in the file in DESTDIR
|
|
# is a change in the FreeBSD ID string, then remove the file.
|
|
#
|
|
# $1 - pathname of the file (relative to DESTDIR)
|
|
handle_removed_file()
|
|
{
|
|
local dest file
|
|
|
|
file=$1
|
|
if ignore $file; then
|
|
log "IGNORE: removed file $file"
|
|
return
|
|
fi
|
|
|
|
compare_fbsdid $DESTDIR/$file $OLDTREE/$file
|
|
case $? in
|
|
$COMPARE_EQUAL)
|
|
if ! [ -d $DESTDIR/$file ]; then
|
|
remove_old $file
|
|
fi
|
|
;;
|
|
$COMPARE_ONLYFIRST)
|
|
panic "Removed file now missing"
|
|
;;
|
|
$COMPARE_ONLYSECOND)
|
|
# Already removed, nothing to do.
|
|
;;
|
|
$COMPARE_DIFFTYPE|$COMPARE_DIFFLINKS|$COMPARE_DIFFFILES)
|
|
dest=`file_type $DESTDIR/$file`
|
|
warn "Modified $dest remains: $file"
|
|
;;
|
|
esac
|
|
}
|
|
|
|
# Handle a directory that has been removed from the new tree. Only
|
|
# remove the directory if it is empty.
|
|
#
|
|
# $1 - pathname of the directory (relative to DESTDIR)
|
|
handle_removed_directory()
|
|
{
|
|
local dir
|
|
|
|
dir=$1
|
|
if ignore $dir; then
|
|
log "IGNORE: removed dir $dir"
|
|
return
|
|
fi
|
|
|
|
if [ -d $DESTDIR/$dir -a -d $OLDTREE/$dir ]; then
|
|
if empty_destdir $dir; then
|
|
log "rmdir ${DESTDIR}$dir"
|
|
if [ -z "$dryrun" ]; then
|
|
rmdir ${DESTDIR}$dir >/dev/null 2>&1
|
|
fi
|
|
echo " D $dir"
|
|
else
|
|
warn "Non-empty directory remains: $dir"
|
|
fi
|
|
fi
|
|
}
|
|
|
|
# Handle a file that exists in both the old and new trees. If the
|
|
# file has not changed in the old and new trees, there is nothing to
|
|
# do. If the file in the destination directory matches the new file,
|
|
# there is nothing to do. If the file in the destination directory
|
|
# matches the old file, then the new file should be installed.
|
|
# Everything else becomes some sort of conflict with more detailed
|
|
# handling.
|
|
#
|
|
# $1 - pathname of the file (relative to DESTDIR)
|
|
handle_modified_file()
|
|
{
|
|
local cmp dest file new newdestcmp old
|
|
|
|
file=$1
|
|
if ignore $file; then
|
|
log "IGNORE: modified file $file"
|
|
return
|
|
fi
|
|
|
|
compare $OLDTREE/$file $NEWTREE/$file
|
|
cmp=$?
|
|
if [ $cmp -eq $COMPARE_EQUAL ]; then
|
|
return
|
|
fi
|
|
|
|
if [ $cmp -eq $COMPARE_ONLYFIRST -o $cmp -eq $COMPARE_ONLYSECOND ]; then
|
|
panic "Changed file now missing"
|
|
fi
|
|
|
|
compare $NEWTREE/$file $DESTDIR/$file
|
|
newdestcmp=$?
|
|
if [ $newdestcmp -eq $COMPARE_EQUAL ]; then
|
|
return
|
|
fi
|
|
|
|
# If the only change in the new file versus the destination
|
|
# file is a change in the FreeBSD ID string and -F is
|
|
# specified, just install the new file.
|
|
if [ -n "$FREEBSD_ID" -a $newdestcmp -eq $COMPARE_DIFFFILES ] && \
|
|
fbsdid_only $NEWTREE/$file $DESTDIR/$file; then
|
|
if update_unmodified $file; then
|
|
return
|
|
else
|
|
panic "Updating FreeBSD ID string failed"
|
|
fi
|
|
fi
|
|
|
|
# If the local file is the same as the old file, install the
|
|
# new file. If -F is specified and the only local change is
|
|
# in the FreeBSD ID string, then install the new file as well.
|
|
if compare_fbsdid $OLDTREE/$file $DESTDIR/$file; then
|
|
if update_unmodified $file; then
|
|
return
|
|
fi
|
|
fi
|
|
|
|
# If the file was removed from the dest tree, just whine.
|
|
if [ $newdestcmp -eq $COMPARE_ONLYFIRST ]; then
|
|
# If the removed file matches an ALWAYS_INSTALL glob,
|
|
# then just install the new version of the file.
|
|
if always_install $file; then
|
|
log "ALWAYS: adding $file"
|
|
if ! [ -d $NEWTREE/$file ]; then
|
|
if install_new $file; then
|
|
echo " A $file"
|
|
fi
|
|
fi
|
|
return
|
|
fi
|
|
|
|
# If the only change in the new file versus the old
|
|
# file is a change in the FreeBSD ID string and -F is
|
|
# specified, don't warn.
|
|
if [ -n "$FREEBSD_ID" -a $cmp -eq $COMPARE_DIFFFILES ] && \
|
|
fbsdid_only $OLDTREE/$file $NEWTREE/$file; then
|
|
return
|
|
fi
|
|
|
|
case $cmp in
|
|
$COMPARE_DIFFTYPE)
|
|
old=`file_type $OLDTREE/$file`
|
|
new=`file_type $NEWTREE/$file`
|
|
warn "Remove mismatch: $file ($old became $new)"
|
|
;;
|
|
$COMPARE_DIFFLINKS)
|
|
old=`readlink $OLDTREE/$file`
|
|
new=`readlink $NEWTREE/$file`
|
|
warn \
|
|
"Removed link changed: $file (\"$old\" became \"$new\")"
|
|
;;
|
|
$COMPARE_DIFFFILES)
|
|
warn "Removed file changed: $file"
|
|
;;
|
|
esac
|
|
return
|
|
fi
|
|
|
|
# Treat the file as unmodified and force install of the new
|
|
# file if it matches an ALWAYS_INSTALL glob. If the update
|
|
# attempt fails, then fall through to the normal case so a
|
|
# warning is generated.
|
|
if always_install $file; then
|
|
log "ALWAYS: updating $file"
|
|
if update_unmodified $file; then
|
|
return
|
|
fi
|
|
fi
|
|
|
|
# If the only change in the new file versus the old file is a
|
|
# change in the FreeBSD ID string and -F is specified, just
|
|
# update the FreeBSD ID string in the local file.
|
|
if [ -n "$FREEBSD_ID" -a $cmp -eq $COMPARE_DIFFFILES ] && \
|
|
fbsdid_only $OLDTREE/$file $NEWTREE/$file; then
|
|
if update_freebsdid $file; then
|
|
continue
|
|
fi
|
|
fi
|
|
|
|
# If the file changed types between the old and new trees but
|
|
# the files in the new and dest tree are both of the same
|
|
# type, treat it like an added file just comparing the new and
|
|
# dest files.
|
|
if [ $cmp -eq $COMPARE_DIFFTYPE ]; then
|
|
case $newdestcmp in
|
|
$COMPARE_DIFFLINKS)
|
|
new=`readlink $NEWTREE/$file`
|
|
dest=`readlink $DESTDIR/$file`
|
|
warn \
|
|
"New link conflict: $file (\"$new\" vs \"$dest\")"
|
|
return
|
|
;;
|
|
$COMPARE_DIFFFILES)
|
|
new_conflict $file
|
|
echo " C $file"
|
|
return
|
|
;;
|
|
esac
|
|
else
|
|
# If the file has not changed types between the old
|
|
# and new trees, but it is a different type in
|
|
# DESTDIR, then just warn.
|
|
if [ $newdestcmp -eq $COMPARE_DIFFTYPE ]; then
|
|
new=`file_type $NEWTREE/$file`
|
|
dest=`file_type $DESTDIR/$file`
|
|
warn "Modified mismatch: $file ($new vs $dest)"
|
|
return
|
|
fi
|
|
fi
|
|
|
|
case $cmp in
|
|
$COMPARE_DIFFTYPE)
|
|
old=`file_type $OLDTREE/$file`
|
|
new=`file_type $NEWTREE/$file`
|
|
dest=`file_type $DESTDIR/$file`
|
|
warn "Modified $dest changed: $file ($old became $new)"
|
|
;;
|
|
$COMPARE_DIFFLINKS)
|
|
old=`readlink $OLDTREE/$file`
|
|
new=`readlink $NEWTREE/$file`
|
|
warn \
|
|
"Modified link changed: $file (\"$old\" became \"$new\")"
|
|
;;
|
|
$COMPARE_DIFFFILES)
|
|
merge_file $file
|
|
;;
|
|
esac
|
|
}
|
|
|
|
# Handle a file that has been added in the new tree. If the file does
|
|
# not exist in DESTDIR, simply copy the file into DESTDIR. If the
|
|
# file exists in the DESTDIR and is identical to the new version, do
|
|
# nothing. Otherwise, generate a diff of the two versions of the file
|
|
# and mark it as a conflict.
|
|
#
|
|
# $1 - pathname of the file (relative to DESTDIR)
|
|
handle_added_file()
|
|
{
|
|
local cmp dest file new
|
|
|
|
file=$1
|
|
if ignore $file; then
|
|
log "IGNORE: added file $file"
|
|
return
|
|
fi
|
|
|
|
compare $DESTDIR/$file $NEWTREE/$file
|
|
cmp=$?
|
|
case $cmp in
|
|
$COMPARE_EQUAL)
|
|
return
|
|
;;
|
|
$COMPARE_ONLYFIRST)
|
|
panic "Added file now missing"
|
|
;;
|
|
$COMPARE_ONLYSECOND)
|
|
# Ignore new directories. They will be
|
|
# created as needed when non-directory nodes
|
|
# are installed.
|
|
if ! [ -d $NEWTREE/$file ]; then
|
|
if install_new $file; then
|
|
echo " A $file"
|
|
fi
|
|
fi
|
|
return
|
|
;;
|
|
esac
|
|
|
|
|
|
# Treat the file as unmodified and force install of the new
|
|
# file if it matches an ALWAYS_INSTALL glob. If the update
|
|
# attempt fails, then fall through to the normal case so a
|
|
# warning is generated.
|
|
if always_install $file; then
|
|
log "ALWAYS: updating $file"
|
|
if update_unmodified $file; then
|
|
return
|
|
fi
|
|
fi
|
|
|
|
case $cmp in
|
|
$COMPARE_DIFFTYPE)
|
|
new=`file_type $NEWTREE/$file`
|
|
dest=`file_type $DESTDIR/$file`
|
|
warn "New file mismatch: $file ($new vs $dest)"
|
|
;;
|
|
$COMPARE_DIFFLINKS)
|
|
new=`readlink $NEWTREE/$file`
|
|
dest=`readlink $DESTDIR/$file`
|
|
warn "New link conflict: $file (\"$new\" vs \"$dest\")"
|
|
;;
|
|
$COMPARE_DIFFFILES)
|
|
# If the only change in the new file versus
|
|
# the destination file is a change in the
|
|
# FreeBSD ID string and -F is specified, just
|
|
# install the new file.
|
|
if [ -n "$FREEBSD_ID" ] && \
|
|
fbsdid_only $NEWTREE/$file $DESTDIR/$file; then
|
|
if update_unmodified $file; then
|
|
return
|
|
else
|
|
panic \
|
|
"Updating FreeBSD ID string failed"
|
|
fi
|
|
fi
|
|
|
|
new_conflict $file
|
|
echo " C $file"
|
|
;;
|
|
esac
|
|
}
|
|
|
|
# Main routines for each command
|
|
|
|
# Build a new tree and save it in a tarball.
|
|
build_cmd()
|
|
{
|
|
local dir
|
|
|
|
if [ $# -ne 1 ]; then
|
|
echo "Missing required tarball."
|
|
echo
|
|
usage
|
|
fi
|
|
|
|
log "build command: $1"
|
|
|
|
# Create a temporary directory to hold the tree
|
|
dir=`mktemp -d $WORKDIR/etcupdate-XXXXXXX`
|
|
if [ $? -ne 0 ]; then
|
|
echo "Unable to create temporary directory."
|
|
exit 1
|
|
fi
|
|
if ! build_tree $dir; then
|
|
echo "Failed to build tree."
|
|
remove_tree $dir
|
|
exit 1
|
|
fi
|
|
if ! tar cfj $1 -C $dir . >&3 2>&1; then
|
|
echo "Failed to create tarball."
|
|
remove_tree $dir
|
|
exit 1
|
|
fi
|
|
remove_tree $dir
|
|
}
|
|
|
|
# Output a diff comparing the tree at DESTDIR to the current
|
|
# unmodified tree. Note that this diff does not include files that
|
|
# are present in DESTDIR but not in the unmodified tree.
|
|
diff_cmd()
|
|
{
|
|
local file
|
|
|
|
if [ $# -ne 0 ]; then
|
|
usage
|
|
fi
|
|
|
|
# Requires an unmodified tree to diff against.
|
|
if ! [ -d $NEWTREE ]; then
|
|
echo "Reference tree to diff against unavailable."
|
|
exit 1
|
|
fi
|
|
|
|
# Unfortunately, diff alone does not quite provide the right
|
|
# level of options that we want, so improvise.
|
|
for file in `(cd $NEWTREE; find .) | sed -e 's/^\.//'`; do
|
|
if ignore $file; then
|
|
continue
|
|
fi
|
|
|
|
diffnode $NEWTREE "$DESTDIR" $file "stock" "local"
|
|
done
|
|
}
|
|
|
|
# Just extract a new tree into NEWTREE either by building a tree or
|
|
# extracting a tarball. This can be used to bootstrap updates by
|
|
# initializing the current "stock" tree to match the currently
|
|
# installed system.
|
|
#
|
|
# Unlike 'update', this command does not rotate or preserve an
|
|
# existing NEWTREE, it just replaces any existing tree.
|
|
extract_cmd()
|
|
{
|
|
|
|
if [ $# -ne 0 ]; then
|
|
usage
|
|
fi
|
|
|
|
log "extract command: tarball=$tarball"
|
|
|
|
# Create a temporary directory to hold the tree
|
|
dir=`mktemp -d $WORKDIR/etcupdate-XXXXXXX`
|
|
if [ $? -ne 0 ]; then
|
|
echo "Unable to create temporary directory."
|
|
exit 1
|
|
fi
|
|
|
|
extract_tree $dir
|
|
|
|
if [ -d $NEWTREE ]; then
|
|
if ! remove_tree $NEWTREE; then
|
|
echo "Unable to remove current tree."
|
|
remove_tree $dir
|
|
exit 1
|
|
fi
|
|
fi
|
|
|
|
if ! mv $dir $NEWTREE >&3 2>&1; then
|
|
echo "Unable to rename temp tree to current tree."
|
|
remove_tree $dir
|
|
exit 1
|
|
fi
|
|
}
|
|
|
|
# Resolve conflicts left from an earlier merge.
|
|
resolve_cmd()
|
|
{
|
|
local conflicts
|
|
|
|
if [ $# -ne 0 ]; then
|
|
usage
|
|
fi
|
|
|
|
if ! [ -d $CONFLICTS ]; then
|
|
return
|
|
fi
|
|
|
|
if ! [ -d $NEWTREE ]; then
|
|
echo "The current tree is not present to resolve conflicts."
|
|
exit 1
|
|
fi
|
|
|
|
conflicts=`(cd $CONFLICTS; find . ! -type d) | sed -e 's/^\.//'`
|
|
for file in $conflicts; do
|
|
resolve_conflict $file
|
|
done
|
|
|
|
if [ -n "$NEWALIAS_WARN" ]; then
|
|
warn "Needs update: /etc/mail/aliases.db" \
|
|
"(requires manual update via newaliases(1))"
|
|
echo
|
|
echo "Warnings:"
|
|
echo " Needs update: /etc/mail/aliases.db" \
|
|
"(requires manual update via newaliases(1))"
|
|
fi
|
|
}
|
|
|
|
# Restore files to the stock version. Only files with a local change
|
|
# are restored from the stock version.
|
|
revert_cmd()
|
|
{
|
|
local cmp file
|
|
|
|
if [ $# -eq 0 ]; then
|
|
usage
|
|
fi
|
|
|
|
for file; do
|
|
log "revert $file"
|
|
|
|
if ! [ -e $NEWTREE/$file ]; then
|
|
echo "File $file does not exist in the current tree."
|
|
exit 1
|
|
fi
|
|
if [ -d $NEWTREE/$file ]; then
|
|
echo "File $file is a directory."
|
|
exit 1
|
|
fi
|
|
|
|
compare $DESTDIR/$file $NEWTREE/$file
|
|
cmp=$?
|
|
if [ $cmp -eq $COMPARE_EQUAL ]; then
|
|
continue
|
|
fi
|
|
|
|
if update_unmodified $file; then
|
|
# If this file had a conflict, clean up the
|
|
# conflict.
|
|
if [ -e $CONFLICTS/$file ]; then
|
|
if ! rm $CONFLICTS/$file >&3 2>&1; then
|
|
echo "Failed to remove conflict " \
|
|
"for $file".
|
|
fi
|
|
fi
|
|
fi
|
|
done
|
|
}
|
|
|
|
# Report a summary of the previous merge. Specifically, list any
|
|
# remaining conflicts followed by any warnings from the previous
|
|
# update.
|
|
status_cmd()
|
|
{
|
|
|
|
if [ $# -ne 0 ]; then
|
|
usage
|
|
fi
|
|
|
|
if [ -d $CONFLICTS ]; then
|
|
(cd $CONFLICTS; find . ! -type d) | sed -e 's/^\./ C /'
|
|
fi
|
|
if [ -s $WARNINGS ]; then
|
|
echo "Warnings:"
|
|
cat $WARNINGS
|
|
fi
|
|
}
|
|
|
|
# Perform an actual merge. The new tree can either already exist (if
|
|
# rerunning a merge), be extracted from a tarball, or generated from a
|
|
# source tree.
|
|
update_cmd()
|
|
{
|
|
local dir new old
|
|
|
|
if [ $# -ne 0 ]; then
|
|
usage
|
|
fi
|
|
|
|
log "update command: rerun=$rerun tarball=$tarball preworld=$preworld"
|
|
|
|
if [ `id -u` -ne 0 ]; then
|
|
echo "Must be root to update a tree."
|
|
exit 1
|
|
fi
|
|
|
|
# Enforce a sane umask
|
|
umask 022
|
|
|
|
# XXX: Should existing conflicts be ignored and removed during
|
|
# a rerun?
|
|
|
|
# Trim the conflicts tree. Whine if there is anything left.
|
|
if [ -e $CONFLICTS ]; then
|
|
find -d $CONFLICTS -type d -empty -delete >&3 2>&1
|
|
rmdir $CONFLICTS >&3 2>&1
|
|
fi
|
|
if [ -d $CONFLICTS ]; then
|
|
echo "Conflicts remain from previous update, aborting."
|
|
exit 1
|
|
fi
|
|
|
|
# Save tree names to use for rotation later.
|
|
old=$OLDTREE
|
|
new=$NEWTREE
|
|
if [ -z "$rerun" ]; then
|
|
# Extract the new tree to a temporary directory. The
|
|
# trees are only rotated after a successful update to
|
|
# avoid races if an update command is interrupted
|
|
# before it completes.
|
|
dir=`mktemp -d $WORKDIR/etcupdate-XXXXXXX`
|
|
if [ $? -ne 0 ]; then
|
|
echo "Unable to create temporary directory."
|
|
exit 1
|
|
fi
|
|
|
|
# Populate the new tree.
|
|
extract_tree $dir
|
|
|
|
# Compare the new tree against the previous tree. For
|
|
# the preworld case OLDTREE already points to the
|
|
# current stock tree.
|
|
if [ -z "$preworld" ]; then
|
|
OLDTREE=$NEWTREE
|
|
fi
|
|
NEWTREE=$dir
|
|
fi
|
|
|
|
if ! [ -d $OLDTREE ]; then
|
|
cat <<EOF
|
|
No previous tree to compare against, a sane comparison is not possible.
|
|
EOF
|
|
log "No previous tree to compare against."
|
|
if [ -n "$dir" ]; then
|
|
if [ -n "$rerun" ]; then
|
|
panic "Should not have a temporary directory"
|
|
fi
|
|
remove_tree $dir
|
|
fi
|
|
exit 1
|
|
fi
|
|
|
|
# Build lists of nodes in the old and new trees.
|
|
(cd $OLDTREE; find .) | sed -e 's/^\.//' | sort > $WORKDIR/old.files
|
|
(cd $NEWTREE; find .) | sed -e 's/^\.//' | sort > $WORKDIR/new.files
|
|
|
|
# Split the files up into three groups using comm.
|
|
comm -23 $WORKDIR/old.files $WORKDIR/new.files > $WORKDIR/removed.files
|
|
comm -13 $WORKDIR/old.files $WORKDIR/new.files > $WORKDIR/added.files
|
|
comm -12 $WORKDIR/old.files $WORKDIR/new.files > $WORKDIR/both.files
|
|
|
|
# Initialize conflicts and warnings handling.
|
|
rm -f $WARNINGS
|
|
mkdir -p $CONFLICTS
|
|
|
|
# Ignore removed files for the pre-world case. A pre-world
|
|
# update uses a stripped-down tree.
|
|
if [ -n "$preworld" ]; then
|
|
> $WORKDIR/removed.files
|
|
fi
|
|
|
|
# The order for the following sections is important. In the
|
|
# odd case that a directory is converted into a file, the
|
|
# existing subfiles need to be removed if possible before the
|
|
# file is converted. Similarly, in the case that a file is
|
|
# converted into a directory, the file needs to be converted
|
|
# into a directory if possible before the new files are added.
|
|
|
|
# First, handle removed files.
|
|
for file in `cat $WORKDIR/removed.files`; do
|
|
handle_removed_file $file
|
|
done
|
|
|
|
# For the directory pass, reverse sort the list to effect a
|
|
# depth-first traversal. This is needed to ensure that if a
|
|
# directory with subdirectories is removed, the entire
|
|
# directory is removed if there are no local modifications.
|
|
for file in `sort -r $WORKDIR/removed.files`; do
|
|
handle_removed_directory $file
|
|
done
|
|
|
|
# Second, handle files that exist in both the old and new
|
|
# trees.
|
|
for file in `cat $WORKDIR/both.files`; do
|
|
handle_modified_file $file
|
|
done
|
|
|
|
# Finally, handle newly added files.
|
|
for file in `cat $WORKDIR/added.files`; do
|
|
handle_added_file $file
|
|
done
|
|
|
|
if [ -n "$NEWALIAS_WARN" ]; then
|
|
warn "Needs update: /etc/mail/aliases.db" \
|
|
"(requires manual update via newaliases(1))"
|
|
fi
|
|
|
|
# Run any special one-off commands after an update has completed.
|
|
post_update
|
|
|
|
if [ -s $WARNINGS ]; then
|
|
echo "Warnings:"
|
|
cat $WARNINGS
|
|
fi
|
|
|
|
# If this was a dryrun, remove the temporary tree if we built
|
|
# a new one.
|
|
if [ -n "$dryrun" ]; then
|
|
if [ -n "$dir" ]; then
|
|
if [ -n "$rerun" ]; then
|
|
panic "Should not have a temporary directory"
|
|
fi
|
|
remove_tree $dir
|
|
fi
|
|
return
|
|
fi
|
|
|
|
# Finally, rotate any needed trees.
|
|
if [ "$new" != "$NEWTREE" ]; then
|
|
if [ -n "$rerun" ]; then
|
|
panic "Should not have a temporary directory"
|
|
fi
|
|
if [ -z "$dir" ]; then
|
|
panic "Should have a temporary directory"
|
|
fi
|
|
|
|
# Rotate the old tree if needed
|
|
if [ "$old" != "$OLDTREE" ]; then
|
|
if [ -n "$preworld" ]; then
|
|
panic "Old tree should be unchanged"
|
|
fi
|
|
|
|
if ! remove_tree $old; then
|
|
echo "Unable to remove previous old tree."
|
|
exit 1
|
|
fi
|
|
|
|
if ! mv $OLDTREE $old >&3 2>&1; then
|
|
echo "Unable to rename old tree."
|
|
exit 1
|
|
fi
|
|
fi
|
|
|
|
# Rotate the new tree. Remove a previous pre-world
|
|
# tree if it exists.
|
|
if [ -d $new ]; then
|
|
if [ -z "$preworld" ]; then
|
|
panic "New tree should be rotated to old"
|
|
fi
|
|
if ! remove_tree $new; then
|
|
echo "Unable to remove previous pre-world tree."
|
|
exit 1
|
|
fi
|
|
fi
|
|
|
|
if ! mv $NEWTREE $new >&3 2>&1; then
|
|
echo "Unable to rename current tree."
|
|
exit 1
|
|
fi
|
|
fi
|
|
}
|
|
|
|
# Determine which command we are executing. A command may be
|
|
# specified as the first word. If one is not specified then 'update'
|
|
# is assumed as the default command.
|
|
command="update"
|
|
if [ $# -gt 0 ]; then
|
|
case "$1" in
|
|
build|diff|extract|status|resolve|revert)
|
|
command="$1"
|
|
shift
|
|
;;
|
|
-*)
|
|
# If first arg is an option, assume the
|
|
# default command.
|
|
;;
|
|
*)
|
|
usage
|
|
;;
|
|
esac
|
|
fi
|
|
|
|
# Set default variable values.
|
|
|
|
# The path to the source tree used to build trees.
|
|
SRCDIR=/usr/src
|
|
|
|
# The destination directory where the modified files live.
|
|
DESTDIR=
|
|
|
|
# Ignore changes in the FreeBSD ID string.
|
|
FREEBSD_ID=
|
|
|
|
# Files that should always have the new version of the file installed.
|
|
ALWAYS_INSTALL=
|
|
|
|
# Files to ignore and never update during a merge.
|
|
IGNORE_FILES=
|
|
|
|
# The path to the make binary
|
|
MAKE_CMD=make
|
|
|
|
# Flags to pass to 'make' when building a tree.
|
|
MAKE_OPTIONS=
|
|
|
|
# Include a config file if it exists. Note that command line options
|
|
# override any settings in the config file. More details are in the
|
|
# manual, but in general the following variables can be set:
|
|
# - ALWAYS_INSTALL
|
|
# - DESTDIR
|
|
# - EDITOR
|
|
# - FREEBSD_ID
|
|
# - IGNORE_FILES
|
|
# - LOGFILE
|
|
# - MAKE_CMD
|
|
# - MAKE_OPTIONS
|
|
# - SRCDIR
|
|
# - WORKDIR
|
|
if [ -r /etc/etcupdate.conf ]; then
|
|
. /etc/etcupdate.conf
|
|
fi
|
|
|
|
# Parse command line options
|
|
tarball=
|
|
rerun=
|
|
always=
|
|
dryrun=
|
|
ignore=
|
|
nobuild=
|
|
preworld=
|
|
noroot=
|
|
while getopts "d:m:nprs:t:A:BD:FI:L:M:N" option; do
|
|
case "$option" in
|
|
d)
|
|
WORKDIR=$OPTARG
|
|
;;
|
|
m)
|
|
MAKE_CMD=$OPTARG
|
|
;;
|
|
n)
|
|
dryrun=YES
|
|
;;
|
|
p)
|
|
preworld=YES
|
|
;;
|
|
r)
|
|
rerun=YES
|
|
;;
|
|
s)
|
|
SRCDIR=$OPTARG
|
|
;;
|
|
t)
|
|
tarball=$OPTARG
|
|
;;
|
|
A)
|
|
# To allow this option to be specified
|
|
# multiple times, accumulate command-line
|
|
# specified patterns in an 'always' variable
|
|
# and use that to overwrite ALWAYS_INSTALL
|
|
# after parsing all options. Need to be
|
|
# careful here with globbing expansion.
|
|
set -o noglob
|
|
always="$always $OPTARG"
|
|
set +o noglob
|
|
;;
|
|
B)
|
|
nobuild=YES
|
|
;;
|
|
D)
|
|
DESTDIR=$OPTARG
|
|
;;
|
|
F)
|
|
FREEBSD_ID=YES
|
|
;;
|
|
I)
|
|
# To allow this option to be specified
|
|
# multiple times, accumulate command-line
|
|
# specified patterns in an 'ignore' variable
|
|
# and use that to overwrite IGNORE_FILES after
|
|
# parsing all options. Need to be careful
|
|
# here with globbing expansion.
|
|
set -o noglob
|
|
ignore="$ignore $OPTARG"
|
|
set +o noglob
|
|
;;
|
|
L)
|
|
LOGFILE=$OPTARG
|
|
;;
|
|
M)
|
|
MAKE_OPTIONS="$OPTARG"
|
|
;;
|
|
N)
|
|
noroot=YES
|
|
;;
|
|
*)
|
|
echo
|
|
usage
|
|
;;
|
|
esac
|
|
done
|
|
shift $((OPTIND - 1))
|
|
|
|
# Allow -A command line options to override ALWAYS_INSTALL set from
|
|
# the config file.
|
|
set -o noglob
|
|
if [ -n "$always" ]; then
|
|
ALWAYS_INSTALL="$always"
|
|
fi
|
|
|
|
# Allow -I command line options to override IGNORE_FILES set from the
|
|
# config file.
|
|
if [ -n "$ignore" ]; then
|
|
IGNORE_FILES="$ignore"
|
|
fi
|
|
set +o noglob
|
|
|
|
# Where the "old" and "new" trees are stored.
|
|
WORKDIR=${WORKDIR:-$DESTDIR/var/db/etcupdate}
|
|
|
|
# Log file for verbose output from program that are run. The log file
|
|
# is opened on fd '3'.
|
|
LOGFILE=${LOGFILE:-$WORKDIR/log}
|
|
|
|
# The path of the "old" tree
|
|
OLDTREE=$WORKDIR/old
|
|
|
|
# The path of the "new" tree
|
|
NEWTREE=$WORKDIR/current
|
|
|
|
# The path of the "conflicts" tree where files with merge conflicts are saved.
|
|
CONFLICTS=$WORKDIR/conflicts
|
|
|
|
# The path of the "warnings" file that accumulates warning notes from an update.
|
|
WARNINGS=$WORKDIR/warnings
|
|
|
|
# Use $EDITOR for resolving conflicts. If it is not set, default to vi.
|
|
EDITOR=${EDITOR:-/usr/bin/vi}
|
|
|
|
# Files that need to be updated before installworld.
|
|
PREWORLD_FILES="etc/master.passwd etc/group"
|
|
|
|
# Handle command-specific argument processing such as complaining
|
|
# about unsupported options. Since the configuration file is always
|
|
# included, do not complain about extra command line arguments that
|
|
# may have been set via the config file rather than the command line.
|
|
case $command in
|
|
update)
|
|
if [ -n "$rerun" -a -n "$tarball" ]; then
|
|
echo "Only one of -r or -t can be specified."
|
|
echo
|
|
usage
|
|
fi
|
|
if [ -n "$rerun" -a -n "$preworld" ]; then
|
|
echo "Only one of -p or -r can be specified."
|
|
echo
|
|
usage
|
|
fi
|
|
;;
|
|
build|diff|status|revert)
|
|
if [ -n "$dryrun" -o -n "$rerun" -o -n "$tarball" -o \
|
|
-n "$preworld" ]; then
|
|
usage
|
|
fi
|
|
;;
|
|
resolve)
|
|
if [ -n "$dryrun" -o -n "$rerun" -o -n "$tarball" ]; then
|
|
usage
|
|
fi
|
|
;;
|
|
extract)
|
|
if [ -n "$dryrun" -o -n "$rerun" -o -n "$preworld" ]; then
|
|
usage
|
|
fi
|
|
;;
|
|
esac
|
|
|
|
# Pre-world mode uses a different set of trees. It leaves the current
|
|
# tree as-is so it is still present for a full etcupdate run after the
|
|
# world install is complete. Instead, it installs a few critical files
|
|
# into a separate tree.
|
|
if [ -n "$preworld" ]; then
|
|
OLDTREE=$NEWTREE
|
|
NEWTREE=$WORKDIR/preworld
|
|
fi
|
|
|
|
# Open the log file. Don't truncate it if doing a minor operation so
|
|
# that a minor operation doesn't lose log info from a major operation.
|
|
if ! mkdir -p $WORKDIR 2>/dev/null; then
|
|
echo "Failed to create work directory $WORKDIR"
|
|
fi
|
|
|
|
case $command in
|
|
diff|resolve|revert|status)
|
|
exec 3>>$LOGFILE
|
|
;;
|
|
*)
|
|
exec 3>$LOGFILE
|
|
;;
|
|
esac
|
|
|
|
${command}_cmd "$@"
|