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72420d1f00
The change to fix superset problem also reversed logic to prefer the 'old' entries to the 'new' entries. For now, restore the logic of merge entries superseding existing entries. What is really warranted is a facility to intelligently sync the account databases. Specifically, read in /etc/login.defs, look at UID_MIN and GID_MIN for the platform. For UID/GID lower than that, rpms may manage and such care needs to be given to not change UID/GID, but still need to update things like shadow and group *membership*, but presrve uid/gid. Above UID_MIN/GID_MIN, they are user groups and the uid/gid portion is important in shared filesystem context, so it is imperative that they work.
110 lines
3.8 KiB
Bash
Executable File
110 lines
3.8 KiB
Bash
Executable File
#!/bin/bash
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# This script is used by the xdcp MERGE: function to perform the
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# merge operation on the nodes for the /etc/passwd, /etc/shadow and
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# and /etc/group files. These are the only supported files for merge.
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# The MERGE function is also only supported on Linux.
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#First parameter is nodesyncfiledir
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#The next parameter is the MERGE clause put in the following format
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#mergefile1:currfile1 mergefile2:currfile2.....
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#For example:
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#/tmp/myusers:/etc/passwd /tmp/mypasswds:/etc/shadow /tmp/mygrps:/etc/group
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#
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# Check for Linux, AIX not supported
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if [ "$(uname -s)" != "Linux" ]; then
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logger -t xcat -p local4.err "Merge: xdcp merge is only supported on Linux"
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exit 1
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fi
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#this is the base path to the merge directory
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nodesyncfiledir=$1
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#this is the backup copy of the original current file
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nodesyncfiledirorg="$nodesyncfiledir/org"
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#this is the path to merge working files
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nodesyncfiledirmerge="$nodesyncfiledir/merge"
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#this is the path to the files containing the merge data
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nodesynfiledirmergefiles="$nodesyncfiledir/merge/mergefiles"
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skip=0
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# for each input parameter
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for i in $*; do
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# skip first parm
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if [ $skip -eq 0 ]; then
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skip=1
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continue
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fi
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# get the merge file path and name, for example /tmp/myusers
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mergefilename=`echo "$i"|cut -d ':' -f 1`
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# get location on the node
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mergefile="$nodesynfiledirmergefiles$mergefilename"
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# get the file path and name to merge into, for example /etc/passwd
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curfile=`echo "$i"|cut -d ':' -f 2`
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# if curfile not /etc/passwd or /etc/shadow or /etc/group
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# exit error
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#if [ "$curfile" != "/etc/passwd" ] && [ "$curfile" != "/etc/shadow" ] && [ "$curfile" != "/etc/group" ]; then
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# logger -t xcat -p local4.err "Merge: $curfile is not /etc/passwd or /etc/shadow or /etc/group. It cannot be processes."
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# exit 1
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#fi
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# get the directory to backup the original file
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curfiledir=`dirname $curfile`
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curfilename=`basename $curfile`
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filebackupdir="$nodesyncfiledirorg$curfiledir"
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# name of the path to the backup of original file
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filebackup="$nodesyncfiledirorg$curfile"
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# now do the work
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# make the necessary directories
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mkdir -p $filebackupdir
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# copy current to backup
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cp -p $curfile $filebackup
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# Go though the backup copy and remove duplicate lines that are
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# in the merge file and create a new backup
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# first get a list of duplicate lines to remove
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# based on only username: the first field in the file
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cut -d: -f1 $filebackup > $filebackup.userlist
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cut -d: -f1 $mergefile > $mergefile.userlist
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comm -12 <(sort $filebackup.userlist | uniq) <(sort $mergefile.userlist | uniq) > $filebackup.remove
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# now if there is a remove file, use it to remove the dup lines in backup
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# Need to buit a command like the following with all users
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#grep -v -E ^(root|bin|...) $filebackup > $filebackup.nodups
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if [ -s "$filebackup.remove" ]; then
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grepcmd="grep -v -E "
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removeusers=`cat $filebackup.remove`
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startlist="'^("
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userlist=$startlist
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delim="|"
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for u in $removeusers
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do
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# For special char +/-, need to escape
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[[ "${u:0:1}x" =~ ^\+|\-x ]] && uu="\\$u" || uu="$u"
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userlist=$userlist$uu$delim
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done
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# remove the last delimiter
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userlisttmp="${userlist%?}"
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listend="):'"
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userlist=$userlisttmp$listend
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grepcmd=$grepcmd$userlist
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#set -x
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cp -p $filebackup $filebackup.nodups # preserve ownership and such
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grepcmd="$grepcmd $filebackup > $filebackup.nodups"
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#echo "grepcmd=$grepcmd"
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# now run it
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eval $grepcmd
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mv $filebackup.nodups $filebackup
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fi
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# add new entries from mergefile, if any
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cat $filebackup $mergefile > $curfile
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# now cleanup
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rm $filebackup.userlist
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# echo "rm $filebackup.userlist"
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rm $filebackup.remove
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# echo "rm $filebackup.remove"
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rm $mergefile.userlist
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# echo "rm $mergefile.userlist"
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done
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exit 0
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