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mergemaster: handle symbolic links during update.

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/etc/os-release is now a symbolic link to a generated file. Make
mergemaster cope with symbolic links generically. I'm no longer
a big mergemaster user, so this has only been lightly tested
by me, though Kimura-san has ran it through its paces.

Submitted by: Yasushiro KIMURA-san
PR: 242212
MFC After: 2 weeks
This commit is contained in:
Warner Losh 2020-11-18 19:22:24 +00:00
parent 1e4896b176
commit 30a56f9ef7
1 changed files with 116 additions and 2 deletions
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118
usr.sbin/mergemaster/mergemaster.sh
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@ -1093,6 +1093,7 @@ for COMPFILE in `find . | sort` ; do
fi
done
# Compare regular files
for COMPFILE in `find . -type f | sort`; do
# First, check to see if the file exists in DESTDIR. If not, the
@ -1182,6 +1183,119 @@ for COMPFILE in `find . -type f | sort`; do
fi # Yes, the file still remains to be checked
done # This is for the for way up there at the beginning of the comparison
ask_answer_for_symbolic_link () {
HANDLE_COMPSYMLINK=''
while true; do
echo " Use 'd' to delete the temporary ${COMPSYMLINK}"
echo " Use 'i' to install the temporary ${COMPSYMLINK}"
echo ''
echo " Default is to leave the temporary symbolic link to deal with by hand"
echo ''
echo -n "How should I deal with this? [Leave it for later] "
read HANDLE_COMPSYMLINK
case ${HANDLE_COMPSYMLINK} in
''|[dDiI])
break
;;
*)
echo "invalid choice: ${HANDLE_COMPSYMLINK}"
echo ''
HANDLE_COMPSYMLINK=''
;;
esac
done
}
install_symbolic_link () {
rm -f ${DESTDIR}${COMPSYMLINK#.} > /dev/null 2>&1
if [ -L ${DESTDIR}${COMPSYMLINK#.} ]; then
return 1
fi
cp -a ${COMPSYMLINK} ${DESTDIR}${COMPSYMLINK#.} > /dev/null 2>&1
if [ ! -L ${DESTDIR}${COMPSYMLINK#.} ]; then
return 1
fi
return 0
}
handle_symbolic_link () {
case ${HANDLE_COMPSYMLINK} in
[dD])
rm ${COMPSYMLINK}
echo ''
echo " *** Deleting ${COMPSYMLINK}"
echo ''
return 1
;;
[iI])
echo ''
if install_symbolic_link; then
rm ${COMPSYMLINK}
echo " *** ${COMPSYMLINK} installed successfully"
return 2
else
echo " *** Problem installing ${COMPSYMLINK}, it will remain to merge by hand"
return 3
fi
echo ''
;;
'')
echo ''
echo " *** ${COMPSYMLINK} will remain for your consideration"
echo ''
return 0
;;
esac
}
# Compare symblic links
for COMPSYMLINK in `find . -type l | sort`; do
if [ ! -L "${DESTDIR}${COMPSYMLINK#.}" ]; then
if [ -n "${AUTO_RUN}" -a -z "${AUTO_INSTALL}" ]; then
echo " *** ${COMPSYMLINK} will remain for your consideration"
continue
else
echo ''
echo " *** There is no installed version of ${COMPSYMLINK}"
echo ''
if [ -n "${AUTO_INSTALL}" ]; then
HANDLE_COMPSYMLINK="i"
else
ask_answer_for_symbolic_link
fi
handle_symbolic_link
if [ -n "${AUTO_INSTALL}" -a $? -eq 2 ]; then
AUTO_INSTALLED_FILES="${AUTO_INSTALLED_FILES} ${DESTDIR}${COMPSYMLINK#.}
"
fi
fi
elif [ $(readlink ${COMPSYMLINK}) = $(readlink ${DESTDIR}${COMPSYMLINK#.}) ]; then
echo " *** Temp ${COMPSYMLINK} and installed are the same, deleting"
rm ${COMPSYMLINK}
else
if [ -n "${AUTO_RUN}" -a -z "${AUTO_UPGRADE}" ]; then
echo " *** ${COMPSYMLINK} will remain for your consideration"
continue
else
echo ''
echo " *** Target of temp symbolic link is differnt from that of installed one"
echo " Temp (${COMPSYMLINK}): $(readlink ${COMPSYMLINK})"
echo " Installed (${DESTDIR}${COMPSYMLINK#.})): $(readlink ${DESTDIR}${COMPSYMLINK#.})"
echo ''
if [ -n "${AUTO_UPGRADE}" ]; then
HANDLE_COMPSYMLINK="i"
else
ask_answer_for_symbolic_link
fi
handle_symbolic_link
if [ -n "${AUTO_UPGRADE}" -a $? -eq 2 ]; then
AUTO_UPGRADED_FILES="${AUTO_UPGRADED_FILES} ${DESTDIR}${COMPSYMLINK#.}
"
fi
fi
fi
done
echo ''
echo "*** Comparison complete"
@ -1193,10 +1307,10 @@ fi
echo ''
TEST_FOR_FILES=`find ${TEMPROOT} -type f -size +0 2>/dev/null`
TEST_FOR_FILES=`find ${TEMPROOT} -type f -size +0 -or -type l 2>/dev/null`
if [ -n "${TEST_FOR_FILES}" ]; then
echo "*** Files that remain for you to merge by hand:"
find "${TEMPROOT}" -type f -size +0 | sort
find "${TEMPROOT}" -type f -size +0 -or -type l | sort
echo ''
case "${AUTO_RUN}" in