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Fix a problem with how mergemaster handles the hard links for /.cshrc

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and /.profile. The problem is that install(1) will unlink the old file
before it installs the new one, which means that in the best case we
have to compare the changes for the old file twice.

So, change the logic to first test to see if the link exists, then
install the file. Then if the link was there and we're using -i, just
create the link in /root and be done with it. Otherwise display the
message to the user and give them the option.

Because we are now sorting things before doing the comparison we can
know conclusively that the files in / should be the sources, and the
files in /root will be the targets, so adjust the paths accordingly.

While I'm here, split a too-long error message into two lines and
just return at the end of handling these files instead of setting
the variable that says "do nothing" and then returning at the end
of the function anyway.
This commit is contained in:
Doug Barton 2009-12-19 05:20:26 +00:00
parent 98e47f9dfe
commit d90331f910
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=200708
1 changed files with 20 additions and 13 deletions
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33
usr.sbin/mergemaster/mergemaster.sh
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@ -840,8 +840,19 @@ mm_install () {
DONT_INSTALL=yes
;;
/.cshrc | /.profile)
case "${AUTO_INSTALL}" in
'')
local st_nlink
# install will unlink the file before it installs the new one,
# so we have to restore/create the link afterwards.
#
st_nlink=0 # In case the file does not yet exist
eval $(stat -s ${DESTDIR}${COMPFILE#.} 2>/dev/null)
do_install_and_rm "${FILE_MODE}" "${1}" "${DESTDIR}${INSTALL_DIR}"
if [ -n "${AUTO_INSTALL}" -a $st_nlink -gt 1 ]; then
HANDLE_LINK=l
else
case "${LINK_EXPLAINED}" in
'')
echo " *** Historically BSD derived systems have had a"
@ -855,17 +866,13 @@ mm_install () {
esac
echo " Use 'd' to delete the temporary ${COMPFILE}"
echo " Use 'l' to delete the existing ${DESTDIR}${COMPFILE#.} and create the link"
echo " Use 'l' to delete the existing ${DESTDIR}/root/${COMPFILE##*/} and create the link"
echo ''
echo " Default is to leave the temporary file to deal with by hand"
echo ''
echo -n " How should I handle ${COMPFILE}? [Leave it to install later] "
read HANDLE_LINK
;;
*) # Part of AUTO_INSTALL
HANDLE_LINK=l
;;
esac
fi
case "${HANDLE_LINK}" in
[dD]*)
@ -875,19 +882,19 @@ mm_install () {
;;
[lL]*)
echo ''
rm -f "${DESTDIR}${COMPFILE#.}"
if ln "${DESTDIR}/root/${COMPFILE##*/}" "${DESTDIR}${COMPFILE#.}"; then
unlink ${DESTDIR}/root/${COMPFILE##*/}
if ln ${DESTDIR}${COMPFILE#.} ${DESTDIR}/root/${COMPFILE##*/}; then
echo " *** Link from ${DESTDIR}${COMPFILE#.} to ${DESTDIR}/root/${COMPFILE##*/} installed successfully"
rm "${COMPFILE}"
else
echo " *** Error linking ${DESTDIR}${COMPFILE#.} to ${DESTDIR}/root/${COMPFILE##*/}, ${COMPFILE} will remain to install by hand"
echo " *** Error linking ${DESTDIR}${COMPFILE#.} to ${DESTDIR}/root/${COMPFILE##*/}"
echo " *** ${COMPFILE} will remain for your consideration"
fi
;;
*)
echo " *** ${COMPFILE} will remain for your consideration"
;;
esac
DONT_INSTALL=yes
return
;;
esac