751 lines
20 KiB
Bash
Executable File
751 lines
20 KiB
Bash
Executable File
#!/bin/sh
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# mergemaster
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# Compare files created by /usr/src/etc/Makefile (or the directory
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# the user specifies) with the currently installed copies.
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# Copyright 1998, 1999 Douglas Barton
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# Doug@gorean.org
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# $FreeBSD$
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PATH=/bin:/usr/bin:/usr/sbin:/sbin
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display_usage () {
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VERSION_NUMBER=`grep "[$]FreeBSD:" $0 | cut -d ' ' -f 4`
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echo "mergemaster version ${VERSION_NUMBER}"
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echo "Usage: mergemaster [-scrvah] [-m /path] [-t /path] [-d] [-u N] [-w N]"
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echo "Options:"
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echo " -s Strict comparison (diff every pair of files)"
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echo " -c Use context diff instead of unified diff"
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echo " -r Re-run on a previously cleaned directory (skip temproot creation)"
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echo " -v Be more verbose about the process, include additional checks"
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echo " -a Leave all files that differ to merge by hand"
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echo " -h Display more complete help"
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echo " -m /path/directory Specify location of source to do the make in"
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echo " -t /path/directory Specify temp root directory"
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echo " -d Add date and time to directory name (e.g., /var/tmp/temproot.`date +%m%d.%H.%M`)"
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echo " -u N Specify a numeric umask"
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echo " -w N Specify a screen width in columns to sdiff"
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echo ''
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}
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display_help () {
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echo "* To create a temporary root environment, compare CVS revision \$Ids"
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echo " for files that have them, and compare diffs for files that do not,"
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echo " or have different ones, just type, mergemaster"
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echo "* To specify a directory other than /var/tmp/temproot for the"
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echo " temporary root environment, use -t /path/to/temp/root"
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echo "* The -w option takes a number as an argument for the column width"
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echo " of the screen. The default is 80."
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echo "* The -a option causes mergemaster to run without prompting"
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}
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# Loop allowing the user to use sdiff to merge files and display the merged
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# file.
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merge_loop () {
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case "${VERBOSE}" in
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'') ;;
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*)
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echo " *** Type h at the sdiff prompt (%) to get usage help"
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;;
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esac
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echo ''
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MERGE_AGAIN=yes
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while [ "${MERGE_AGAIN}" = "yes" ]; do
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# Prime file.merged so we don't blat the owner/group id's
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cp -p "${COMPFILE}" "${COMPFILE}.merged"
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sdiff -o "${COMPFILE}.merged" --text --suppress-common-lines \
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--width=${SCREEN_WIDTH:-80} "${COMPFILE#.}" "${COMPFILE}"
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INSTALL_MERGED=V
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while [ "${INSTALL_MERGED}" = "v" -o "${INSTALL_MERGED}" = "V" ]; do
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echo ''
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echo " Use 'i' to install merged file"
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echo " Use 'r' to re-do the merge"
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echo " Use 'v' to view the merged file"
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echo " Default is to leave the temporary file to deal with by hand"
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echo ''
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read -p " *** How should I deal with the merged file? [Leave it for later] " INSTALL_MERGED
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case "${INSTALL_MERGED}" in
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[iI])
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mv "${COMPFILE}.merged" "${COMPFILE}"
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echo ''
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if mm_install "${COMPFILE}"; then
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echo " *** Merged version of ${COMPFILE} installed successfully"
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else
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echo " *** Problem installing ${COMPFILE}, it will remain to merge by hand later"
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fi
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unset MERGE_AGAIN
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;;
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[rR])
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rm "${COMPFILE}.merged"
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;;
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[vV])
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${PAGER} "${COMPFILE}.merged"
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;;
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'')
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echo " *** ${COMPFILE} will remain for your consideration"
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unset MERGE_AGAIN
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;;
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*)
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echo "invalid choice: ${INSTALL_MERGED}"
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INSTALL_MERGED=V
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;;
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esac
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done
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done
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}
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# Loop showing user differences between files, allow merge, skip or install
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# options
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diff_loop () {
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HANDLE_COMPFILE=v
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while [ "${HANDLE_COMPFILE}" = "v" -o "${HANDLE_COMPFILE}" = "V" -o "${HANDLE_COMPFILE}" = "NOT V" ]; do
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if [ -f "${COMPFILE#.}" -a -f "${COMPFILE}" ]; then
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if [ "${HANDLE_COMPFILE}" = "v" -o "${HANDLE_COMPFILE}" = "V" ]; then
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(
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echo " *** Displaying differences between ${COMPFILE} and installed version:"
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echo ''
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diff "${DIFF_FLAG}" "${COMPFILE#.}" "${COMPFILE}"
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) | ${PAGER}
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echo ''
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fi
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else
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echo " *** There is no installed version of ${COMPFILE}"
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NO_INSTALLED=yes
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fi
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echo " Use 'd' to delete the temporary ${COMPFILE}"
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echo " Use 'i' to install the temporary ${COMPFILE}"
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case "${NO_INSTALLED}" in
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'')
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echo " Use 'm' to merge the old and new versions"
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echo " Use 'v' to view to differences between the old and new versions again"
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;;
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esac
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echo ''
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echo " Default is to leave the temporary file to deal with by hand"
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echo ''
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read -p "How should I deal with this? [Leave it for later] " HANDLE_COMPFILE
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case "${HANDLE_COMPFILE}" in
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[dD])
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rm "${COMPFILE}"
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echo ''
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echo " *** Deleting ${COMPFILE}"
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;;
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[iI])
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echo ''
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if mm_install "${COMPFILE}"; then
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echo " *** ${COMPFILE} installed successfully"
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else
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echo " *** Problem installing ${COMPFILE}, it will remain to merge by hand"
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fi
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;;
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[mM])
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case "${NO_INSTALLED}" in
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'')
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# interact with user to merge files
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merge_loop
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;;
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*)
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echo ''
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echo " *** There is no installed version of ${COMPFILE}"
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echo ''
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HANDLE_COMPFILE="NOT V"
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;;
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esac # End of "No installed version of file but user selected merge" test
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;;
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[vV])
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continue
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;;
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'')
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echo ''
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echo " *** ${COMPFILE} will remain for your consideration"
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;;
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*)
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# invalid choice, show menu again.
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echo "invalid choice: ${HANDLE_COMPFILE}"
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echo ''
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HANDLE_COMPFILE="NOT V"
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continue
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;;
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esac # End of "How to handle files that are different"
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done
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echo ''
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unset NO_INSTALLED
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echo ''
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case "${VERBOSE}" in
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'') ;;
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*)
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sleep 3
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;;
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esac
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}
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# Set the default path for the temporary root environment
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#
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TEMPROOT='/var/tmp/temproot'
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# Read .mergemasterrc before command line so CLI can override
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#
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if [ -f "$HOME/.mergemasterrc" ]; then
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. "$HOME/.mergemasterrc"
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fi
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# Check the command line options
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#
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while getopts ":ascrvhm:t:du:w:" COMMAND_LINE_ARGUMENT ; do
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case "${COMMAND_LINE_ARGUMENT}" in
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s)
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STRICT=yes
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;;
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c)
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DIFF_FLAG='-c'
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;;
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r)
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RERUN=yes
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;;
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v)
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case "${AUTO_RUN}" in
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'') VERBOSE=yes ;;
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esac
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;;
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a)
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AUTO_RUN=yes
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unset VERBOSE
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;;
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h)
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display_usage
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display_help
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exit 0
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;;
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m)
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SOURCEDIR=${OPTARG}
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;;
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t)
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TEMPROOT=${OPTARG}
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;;
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d)
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TEMPROOT=${TEMPROOT}.`date +%m%d.%H.%M`
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;;
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u)
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NEW_UMASK=${OPTARG}
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;;
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w)
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SCREEN_WIDTH=${OPTARG}
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;;
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*)
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display_usage
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exit 1
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;;
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esac
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done
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echo ''
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# If the user has a pager defined, make sure we can run it
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#
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case "${DONT_CHECK_PAGER}" in
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'')
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while ! type "${PAGER%% *}" >/dev/null && [ -n "${PAGER}" ]; do
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echo " *** Your PAGER environment variable specifies '${PAGER}', but"
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echo " due to the limited PATH that I use for security reasons,"
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echo " I cannot execute it. So, what would you like to do?"
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echo ''
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echo " Use 'e' to exit mergemaster and fix your PAGER variable"
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if [ -x /usr/bin/less -o -x /usr/local/bin/less ]; then
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echo " Use 'l' to set PAGER to 'less' for this run"
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fi
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echo " Use 'm' to use plain old 'more' as your PAGER for this run"
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echo ''
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echo " Default is to use plain old 'more' "
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echo ''
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read -p "What should I do? [Use 'more'] " FIXPAGER
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case "${FIXPAGER}" in
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[eE])
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exit 0
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;;
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[lL])
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if [ -x /usr/bin/less ]; then
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PAGER=/usr/bin/less
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elif [ -x /usr/local/bin/less ]; then
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PAGER=/usr/local/bin/less
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else
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echo ''
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echo " *** Fatal Error:"
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echo " You asked to use 'less' as your pager, but I can't"
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echo " find it in /usr/bin or /usr/local/bin"
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exit 1
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fi
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;;
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[mM]|'')
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PAGER=more
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;;
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*)
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echo ''
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echo "invalid choice: ${FIXPAGER}"
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esac
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echo ''
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done
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;;
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esac
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# If user has a pager defined, or got assigned one above, use it.
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# If not, use more.
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#
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PAGER=${PAGER:-more}
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if [ -n "${VERBOSE}" -a ! "${PAGER}" = "more" ]; then
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echo " *** You have ${PAGER} defined as your pager so we will use that"
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echo ''
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sleep 3
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fi
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# Assign the diff flag once so we will not have to keep testing it
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#
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DIFF_FLAG=${DIFF_FLAG:--u}
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# Assign the source directory
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#
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SOURCEDIR=${SOURCEDIR:-/usr/src/etc}
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case "${RERUN}" in
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'')
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# Set up the loop to test for the existence of the
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# temp root directory.
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#
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TEST_TEMP_ROOT=yes
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while [ "${TEST_TEMP_ROOT}" = "yes" ]; do
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if [ -d "${TEMPROOT}" ]; then
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echo "*** The directory specified for the temporary root environment,"
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echo " ${TEMPROOT}, exists. This can be a security risk if untrusted"
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echo " users have access to the system."
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echo ''
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case "${AUTO_RUN}" in
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'')
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echo " Use 'd' to delete the old ${TEMPROOT} and continue"
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echo " Use 't' to select a new temporary root directory"
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echo " Use 'e' to exit mergemaster"
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echo ''
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echo " Default is to use ${TEMPROOT} as is"
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echo ''
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read -p "How should I deal with this? [Use the existing ${TEMPROOT}] " DELORNOT
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case "${DELORNOT}" in
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[dD])
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echo ''
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echo " *** Deleting the old ${TEMPROOT}"
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echo ''
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rm -rf "${TEMPROOT}"
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unset TEST_TEMP_ROOT
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;;
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[tT])
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echo " *** Enter new directory name for temporary root environment"
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read TEMPROOT
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;;
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[eE])
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exit 0
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;;
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'')
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echo ''
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echo " *** Leaving ${TEMPROOT} intact"
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echo ''
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unset TEST_TEMP_ROOT
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;;
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*)
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echo ''
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echo "invalid choice: ${DELORNOT}"
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echo ''
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;;
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esac
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;;
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*)
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# If this is an auto-run, try a hopefully safe alternative then re-test anyway
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TEMPROOT=/var/tmp/temproot.`date +%m%d.%H.%M.%S`
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;;
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esac
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else
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unset TEST_TEMP_ROOT
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fi
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done
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echo "*** Creating the temporary root environment in ${TEMPROOT}"
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if mkdir -p "${TEMPROOT}"; then
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echo " *** ${TEMPROOT} ready for use"
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fi
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if [ ! -d "${TEMPROOT}" ]; then
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echo ''
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echo " *** FATAL ERROR: Cannot create ${TEMPROOT}"
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echo ''
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exit 1
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fi
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echo " *** Creating and populating directory structure in ${TEMPROOT}"
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echo ''
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case "${VERBOSE}" in
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'') ;;
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*)
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echo " *** Press [Enter] or [Return] key to continue"
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read ANY_KEY
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unset ANY_KEY
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;;
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esac
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{ cd ${SOURCEDIR} &&
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make DESTDIR=${TEMPROOT} distrib-dirs &&
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make DESTDIR=${TEMPROOT} -DNO_MAKEDEV distribution;} ||
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{ echo '';
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echo " *** FATAL ERROR: Cannot 'cd' to ${SOURCEDIR} and install files to the";
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echo " temproot environment";
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echo '';
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exit 1;}
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# We really don't want to have to deal with these files, since
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# master.passwd is the real file that should be compared, then
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# the user should run pwd_mkdb if necessary.
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# Only do this if we are not rerun'ing, since if we are the
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# files will not be there.
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#
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rm ${TEMPROOT}/etc/spwd.db ${TEMPROOT}/etc/passwd ${TEMPROOT}/etc/pwd.db
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# Avoid comparing the motd if the user specifies it in .mergemasterrc
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case "${IGNORE_MOTD}" in
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'') ;;
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*) rm ${TEMPROOT}/etc/motd
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;;
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esac
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# Avoid trying to update MAKEDEV if /dev is on a devfs
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if mount | grep -q "devfs on /dev "; then
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rm ${TEMPROOT}/dev/MAKEDEV ${TEMPROOT}/dev/MAKEDEV.local
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fi
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;; # End of the "RERUN" test
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esac
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# Get ready to start comparing files
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case "${VERBOSE}" in
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'') ;;
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*)
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echo ''
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echo " *** The following files exist only in the installed version"
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echo " of /etc. In the far majority of cases these files are"
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echo " necessary parts of the system and should not be deleted,"
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echo " however because these files are not updated by this process"
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echo " you might want to verify their status before rebooting your system."
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echo ''
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echo " *** Press [Enter] or [Return] key to continue"
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read ANY_KEY
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unset ANY_KEY
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diff -qr /etc ${TEMPROOT}/etc | grep "^Only in /etc" | ${PAGER}
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echo ''
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echo " *** Press [Enter] or [Return] key to continue"
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read ANY_KEY
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unset ANY_KEY
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;;
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esac
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# Check umask if not specified on the command line,
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# and we are not doing an autorun
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#
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if [ -z "${NEW_UMASK}" -a -z "${AUTO_RUN}" ]; then
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USER_UMASK=`umask`
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case "${USER_UMASK}" in
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0022) ;;
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*)
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echo ''
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echo " *** Your umask is currently set to ${USER_UMASK}. By default, this script"
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echo " installs all files with the same user, group and modes that"
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echo " they are created with by ${SOURCEDIR}/Makefile, compared to"
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echo " a umask of 022. This umask allows world read permission when"
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echo " the file's default permissions have it."
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echo " No world permissions can sometimes cause problems. A umask of"
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echo " 022 will restore the default behavior, but is not mandatory."
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echo " /etc/master.passwd is a special case. Its file permissions"
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echo " will be 600 (rw-------) if installed."
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echo ''
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read -p "What umask should I use? [${USER_UMASK}] " NEW_UMASK
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NEW_UMASK="${NEW_UMASK:-$USER_UMASK}"
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;;
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esac
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echo ''
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fi
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CONFIRMED_UMASK=${NEW_UMASK:-0022}
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# Warn users who have an /etc/sysconfig file
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#
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if [ -f /etc/sysconfig ]; then
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echo " *** There is an /etc/sysconfig file on this system. Starting with"
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echo " FreeBSD version 2.2.2 those settings have moved from /etc/sysconfig"
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echo " to /etc/rc.conf. If you are upgrading an older system make sure"
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echo " that you transfer your settings by hand from sysconfig to rc.conf and"
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echo " install the rc.conf file. If you have already made this transition,"
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echo " you should consider renaming or deleting the /etc/sysconfig file."
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echo ''
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case "${AUTO_RUN}" in
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'')
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read -p "Continue with the merge process? [yes] " CONT_OR_NOT
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case "${CONT_OR_NOT}" in
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[nN]*)
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exit 0
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;;
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*)
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echo " *** Continuing"
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echo ''
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;;
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esac
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;;
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*) ;;
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esac
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fi
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echo ''
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echo "*** Beginning comparison"
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echo ''
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cd "${TEMPROOT}"
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# Use the umask/mode information to install the files
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# Create directories as needed
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#
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mm_install () {
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local INSTALL_DIR
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INSTALL_DIR=${1#.}
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INSTALL_DIR=${INSTALL_DIR%/*}
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case "${INSTALL_DIR}" in
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'')
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INSTALL_DIR=/
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;;
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esac
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if [ -n "${INSTALL_DIR}" -a ! -d "${INSTALL_DIR}" ]; then
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DIR_MODE=`perl -e 'printf "%04o\n", (((stat("$ARGV[0]"))[2] & 07777) &~ oct("$ARGV[1]"))' "${TEMPROOT}/${INSTALL_DIR}" "${CONFIRMED_UMASK}"`
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install -d -o root -g wheel -m "${DIR_MODE}" "${INSTALL_DIR}"
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fi
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FILE_MODE=`perl -e 'printf "%04o\n", (((stat("$ARGV[0]"))[2] & 07777) &~ oct("$ARGV[1]"))' "${1}" "${CONFIRMED_UMASK}"`
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if [ ! -x "${1}" ]; then
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case "${1#.}" in
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/dev/MAKEDEV)
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NEED_MAKEDEV=yes
|
|
;;
|
|
/etc/mail/aliases)
|
|
NEED_NEWALIASES=yes
|
|
;;
|
|
/etc/login.conf)
|
|
NEED_CAP_MKDB=yes
|
|
;;
|
|
/etc/master.passwd)
|
|
install -m 600 "${1}" "${INSTALL_DIR}"
|
|
NEED_PWD_MKDB=yes
|
|
DONT_INSTALL=yes
|
|
;;
|
|
/.cshrc | /.profile)
|
|
case "${LINK_EXPLAINED}" in
|
|
'')
|
|
echo " *** Historically FreeBSD has had a hard link from"
|
|
echo " /.cshrc and /.profile to their namesakes in"
|
|
echo " /root. Please indicate your preference below"
|
|
echo " for bringing your installed files up to date."
|
|
echo ''
|
|
LINK_EXPLAINED=yes
|
|
;;
|
|
esac
|
|
|
|
echo " Use 'd' to delete the temporary ${COMPFILE}"
|
|
echo " Use 'l' to delete the existing ${COMPFILE#.} and create the link"
|
|
echo ''
|
|
echo " Default is to leave the temporary file to deal with by hand"
|
|
echo ''
|
|
read -p " How should I handle ${COMPFILE}? [Leave it to install later] " HANDLE_LINK
|
|
case "${HANDLE_LINK}" in
|
|
[dD]*)
|
|
rm "${COMPFILE}"
|
|
echo ''
|
|
echo " *** Deleting ${COMPFILE}"
|
|
;;
|
|
[lL]*)
|
|
echo ''
|
|
if [ -e "${COMPFILE#.}" ]; then
|
|
rm "${COMPFILE#.}"
|
|
fi
|
|
if ln "/root/${COMPFILE##*/}" "${COMPFILE#.}"; then
|
|
echo " *** Link from ${COMPFILE#.} to /root/${COMPFILE##*/} installed successfully"
|
|
rm "${COMPFILE}"
|
|
else
|
|
echo " *** Error linking ${COMPFILE#.} to /root/${COMPFILE##*/}, ${COMPFILE} will remain to install by hand"
|
|
fi
|
|
;;
|
|
*)
|
|
echo " *** ${COMPFILE} will remain for your consideration"
|
|
;;
|
|
esac
|
|
DONT_INSTALL=yes
|
|
;;
|
|
esac
|
|
|
|
case "${DONT_INSTALL}" in
|
|
'')
|
|
install -m "${FILE_MODE}" "${1}" "${INSTALL_DIR}"
|
|
;;
|
|
*)
|
|
unset DONT_INSTALL
|
|
;;
|
|
esac
|
|
|
|
else
|
|
install -m "${FILE_MODE}" "${1}" "${INSTALL_DIR}"
|
|
fi
|
|
return $?
|
|
}
|
|
|
|
compare_ids () {
|
|
case "${1}" in
|
|
"${2}")
|
|
echo " *** Temp ${COMPFILE} and installed have the same ${IDTAG}, deleting"
|
|
rm "${COMPFILE}"
|
|
;;
|
|
esac
|
|
}
|
|
|
|
# Using -size +0 avoids uselessly checking the empty log files created
|
|
# by ${SOURCEDIR}/Makefile and the device entries in ./dev, but does
|
|
# check the scripts in ./dev, as we'd like.
|
|
#
|
|
for COMPFILE in `find . -type f -size +0`; do
|
|
case "${STRICT}" in
|
|
'' | [Nn][Oo])
|
|
# Compare CVS $Id's first so if the file hasn't been modified
|
|
# local changes will be ignored.
|
|
# If the files have the same $Id, delete the one in temproot so the
|
|
# user will have less to wade through if files are left to merge by hand.
|
|
# Take the $Id -> $FreeBSD tag change into account
|
|
#
|
|
FREEBSDID1=`grep "[$]FreeBSD:" ${COMPFILE#.} 2>/dev/null`
|
|
FREEBSDID2=`grep "[$]FreeBSD:" ${COMPFILE} 2>/dev/null`
|
|
|
|
if [ -n "${FREEBSDID1}" -a -n "${FREEBSDID2}" ]; then
|
|
IDTAG='$FreeBSD'
|
|
compare_ids "${FREEBSDID1}" "${FREEBSDID2}"
|
|
else
|
|
CVSID1=`grep "[$]Id:" ${COMPFILE#.} 2>/dev/null`
|
|
CVSID2=`grep "[$]Id:" ${COMPFILE} 2>/dev/null`
|
|
|
|
if [ -n "${CVSID1}" -a -n "${CVSID2}" ]; then
|
|
IDTAG='$Id'
|
|
compare_ids "${CVSID1}" "${CVSID2}"
|
|
fi
|
|
fi
|
|
;;
|
|
esac
|
|
|
|
# If the file is still here either because the $Ids are different, the
|
|
# file doesn't have an $Id, or we're using STRICT mode; look at the diff.
|
|
#
|
|
if [ -f "${COMPFILE}" ]; then
|
|
|
|
# Do an absolute diff first to see if the files are actually different.
|
|
# If they're not different, delete the one in temproot.
|
|
#
|
|
if diff -q "${COMPFILE#.}" "${COMPFILE}" > /dev/null 2>&1; then
|
|
echo " *** Temp ${COMPFILE} and installed are the same, deleting"
|
|
rm "${COMPFILE}"
|
|
else
|
|
# Ok, the files are different, so show the user where they differ. Use user's
|
|
# choice of diff methods; and user's pager if they have one. Use more if not.
|
|
# Use unified diffs by default. Context diffs give me a headache. :)
|
|
#
|
|
case "${AUTO_RUN}" in
|
|
'')
|
|
# prompt user to install/delete/merge changes
|
|
diff_loop
|
|
;;
|
|
*)
|
|
# If this is an auto run, make it official
|
|
echo " *** ${COMPFILE} will remain for your consideration"
|
|
;;
|
|
esac # Auto run test
|
|
fi # Yes, the files are different
|
|
fi # Yes, the file still remains to be checked
|
|
done # This is for the do way up there at the beginning of the comparison
|
|
|
|
echo ''
|
|
echo "*** Comparison complete"
|
|
echo ''
|
|
|
|
TEST_FOR_FILES=`find ${TEMPROOT} -type f -size +0 2>/dev/null`
|
|
if [ -n "${TEST_FOR_FILES}" ]; then
|
|
echo "*** Files that remain for you to merge by hand:"
|
|
find "${TEMPROOT}" -type f -size +0
|
|
fi
|
|
|
|
case "${AUTO_RUN}" in
|
|
'')
|
|
echo ''
|
|
read -p "Do you wish to delete what is left of ${TEMPROOT}? [no] " DEL_TEMPROOT
|
|
case "${DEL_TEMPROOT}" in
|
|
[yY]*)
|
|
if rm -rf "${TEMPROOT}"; then
|
|
echo " *** ${TEMPROOT} has been deleted"
|
|
else
|
|
echo " *** Unable to delete ${TEMPROOT}"
|
|
fi
|
|
;;
|
|
*)
|
|
echo " *** ${TEMPROOT} will remain"
|
|
;;
|
|
esac
|
|
;;
|
|
*) ;;
|
|
esac
|
|
|
|
case "${NEED_MAKEDEV}" in
|
|
'') ;;
|
|
*)
|
|
echo ''
|
|
echo "*** You installed a new /dev/MAKEDEV script, so make sure that you run"
|
|
echo " 'cd /dev && /bin/sh MAKEDEV all' to rebuild your devices"
|
|
;;
|
|
esac
|
|
|
|
case "${NEED_NEWALIASES}" in
|
|
'') ;;
|
|
*)
|
|
echo ''
|
|
echo "*** You installed a new aliases file, so make sure that you run"
|
|
echo " 'newaliases' to rebuild your aliases database"
|
|
;;
|
|
esac
|
|
|
|
case "${NEED_CAP_MKDB}" in
|
|
'') ;;
|
|
*)
|
|
echo ''
|
|
echo "*** You installed a login.conf file, so make sure that you run"
|
|
echo " 'cap_mkdb /etc/login.conf' to rebuild your login.conf database"
|
|
;;
|
|
esac
|
|
|
|
case "${NEED_PWD_MKDB}" in
|
|
'') ;;
|
|
*)
|
|
echo ''
|
|
echo "*** You installed a new master.passwd file, so make sure that you run"
|
|
echo " 'pwd_mkdb -p /etc/master.passwd' to rebuild your password files"
|
|
;;
|
|
esac
|
|
|
|
echo ''
|
|
|
|
exit 0
|