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Diffstat (limited to 'lib/vserver.in')
| -rw-r--r-- | lib/vserver.in | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/lib/vserver.in b/lib/vserver.in new file mode 100644 index 0000000..4c62291 --- /dev/null +++ b/lib/vserver.in @@ -0,0 +1,178 @@ +##################################################### +## VSERVERS RELATED FUNCTIONS FOR NINJAHELPER +## +## Depends on: +## - easydialog library +## - $conffile +## +## Global variables used and modified here: +## - $vservers_are_available (yes/no) +## - $found_vservers (list) +## - $selected_vservers (list) +## - $host_or_vservers (host/vservers/both) +## + +## +## Get vservers-related variables. +## Then, if Vservers are enabled, check that: +## - VROOTDIR is valid; +## - at least one vserver can be found. +## If, and only if, the above conditions are all true: +## - set $vservers_are_available to 'yes'; +## - set $found_vservers to the list of all vservers found on the system. +## This function has to be run once before a new helper is run. +## +init_vservers() { + # get global variables from the conffile + setfile $conffile + getconf vservers no + getconf VSERVERINFO /usr/sbin/vserver-info + getconf VSERVER /usr/sbin/vserver + getconf VROOTDIR `if [ -f "$VSERVERINFO" ]; then $VSERVERINFO info SYSINFO |grep vserver-Rootdir | awk '{print $2}'; fi` + # init this library's global variables + vservers_are_available=no + found_vservers= + selected_vservers= + host_or_vservers=host + # check vservers real availability + if [ $vservers == yes ]; then + [ -n "$VROOTDIR" ] || (msgBox "warning" "VROOTDIR is not set in $conffile and could not be guessed."; return) + [ -d "$VROOTDIR" ] || (msgBox "warning" "VROOTDIR ($VROOTDIR) does not exist."; return) + found_vservers=`ls $VROOTDIR | grep -E -v "lost+found|ARCHIVES" | tr "\n" " "` + [ -n "$found_vservers" ] || return + vservers_are_available=yes + fi +} + +## +## If the argument is the name of a vserver selected use by the current helper, +## echoes 'on' and returns 0. +## Else, echoes 'off' and returns 1. +## +vserver_is_selected() { + local vserver=$1 + local vserver_is_selected=1 + local i + for i in $selected_vservers ; do + [ "$vserver" == "$i" ] && vserver_is_selected=0 + done + if [ $vserver_is_selected = 0 ]; then + echo on + else + echo off + fi + return $vserver_is_selected +} + +## +## Have the user choose one Vserver among the existing ones. +## Set $selected_vservers to the chosen one's name. +## Returns 1 if cancelled or if Vservers are not available. +## +choose_one_vserver() { + [ "$vservers_are_available" == "yes" ] || return 1 + local title=$1 + local i= + local vserver= + REPLY= + while [ -z "$REPLY" ]; do + [ -n "$selected_vservers" ] && setDefault $selected_vservers + listBegin "$title" "Choose at least one Linux-Vserver to backup:" + for vserver in $found_vservers; do + listItem "$vserver" "Backup $vserver vserver" + done + listDisplay menu + [ $? = 0 ] || return 1 + done + selected_vservers=$REPLY +} + +## +## If Vservers are not enabled, exit silently. +## Else, have the user choose if he/she wants to perform the backup on the host +## system or on one Vserver. +## Set, respectively, $host_or_vservers to 'host' or 'vservers'. +## Returns 1 if cancelled. +## +choose_host_or_one_vserver() { + [ "$vservers_are_available" == "yes" ] || return + local title=$1 + # if there is one, set the previously chosen item as the default + [ -n "$host_or_vservers" ] && setDefault $host_or_vservers + menuBox "$title - src" "Do you want to operate on the host system and/or on vservers?" \ + "host" "Host system" \ + "vserver" "One Vserver" + [ $? = 0 ] || return 1 + case $REPLY in + "host") + host_or_vservers='host' + ;; + "vserver") + host_or_vservers='vservers' + ;; + esac +} + +## +## If Vservers are not enabled, exit silently. +## Else, have the user choose the target he/she wants to perform the backup on: +## - host system only; +## - some vservers only; +## - both the host system and some vservers. +## Set, respectively, $host_or_vservers to 'host', 'vservers', or 'both' +## Returns 1 if cancelled. +## +choose_host_or_vservers_or_both() { + [ "$vservers_are_available" == "yes" ] || return + local title=$1 + # if there is one, set the previously chosen item as the default + [ -n "$host_or_vservers" ] && setDefault $host_or_vservers + menuBox "$title - src" "Do you want to operate on the host system and/or on vservers?" \ + "host" "Host system only" \ + "vservers" "Vservers only" \ + "both" "Host system and Vservers" + [ $? = 0 ] || return 1 + case $REPLY in + "host") + host_or_vservers='host' + ;; + "vservers") + host_or_vservers='vservers' + ;; + "both") + host_or_vservers='both' + ;; + esac +} + +## +## Have the user choose among "all vservers" and a not-empty subset of these. +## Set $selected_vservers to 'all' or to a space-separated name list. +## Returns 1 if cancelled or if Vservers are not available. +## +choose_one_or_more_vservers() { + [ "$vservers_are_available" == "yes" ] || return 1 + local title=$1 + local i= + # UI + booleanBox "$title" "Do you want to backup all vservers?" ` [ -z "$selected_vservers" -o "$selected_vservers" == "all" ] || echo no` + if [ $? = 0 ]; then + selected_vservers="all" + else + # choose among the existing vservers + local vserver= + local vserver_was_selected= + REPLY= + while [ -z "$REPLY" ]; do + listBegin "$title" "Choose at least one Linux-Vserver to backup:" + # list existing vservers, preselecting the previously selected ones + for vserver in $found_vservers; do + listItem "$vserver" "Backup $vserver vserver" `vserver_is_selected $vserver` + done + listDisplay checklist + [ $? = 0 ] || return 1 + done + # remove quotes around each vserver name + selected_vservers=`echo $REPLY | tr -d '"'` + fi +} |