mirror of
https://github.com/Zygo/bees.git
synced 2025-05-17 21:35:45 +02:00
141 lines
3.3 KiB
Bash
Executable File
141 lines
3.3 KiB
Bash
Executable File
#!/bin/bash
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## Helpful functions
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INFO(){ echo "INFO:" "$@"; }
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ERRO(){ echo "ERROR:" "$@"; exit 1; }
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YN(){ [[ "$1" =~ (1|Y|y) ]]; }
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## Global vars
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export BEESHOME BEESSTATUS
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export WORK_DIR CONFIG_DIR
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export CONFIG_FILE
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export UUID AL16M AL128K
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readonly AL128K="$((128*1024))"
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readonly AL16M="$((16*1024*1024))"
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readonly CONFIG_DIR=@ETC_PREFIX@/bees/
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readonly bees_bin=$(realpath @LIBEXEC_PREFIX@/bees)
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command -v "$bees_bin" &> /dev/null || ERRO "Missing 'bees' agent"
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uuid_valid(){
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if uuidparse -n -o VARIANT $1 | grep -i -q invalid; then
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false
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fi
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}
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help(){
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echo "Usage: beesd [options] <btrfs_uuid>"
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echo "- - -"
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exec "$bees_bin" --help
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}
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for i in $("$bees_bin" --help 2>&1 | grep -E " --" | sed -e "s/^[^-]*-/-/" -e "s/,[^-]*--/ --/" -e "s/ [^-]*$//")
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do
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TMP_ARGS="$TMP_ARGS $i"
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done
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IFS=" " read -r -a SUPPORTED_ARGS <<< $TMP_ARGS
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NOT_SUPPORTED_ARGS=()
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ARGUMENTS=()
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for arg in "${@}"; do
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supp=false
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for supp_arg in "${SUPPORTED_ARGS[@]}"; do
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if [[ "$arg" == ${supp_arg}* ]]; then
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supp=true
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break
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fi
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done
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if $supp; then
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ARGUMENTS+=($arg)
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else
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NOT_SUPPORTED_ARGS+=($arg)
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fi
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done
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for arg in "${ARGUMENTS[@]}"; do
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case $arg in
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-h) help;;
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--help) help;;
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esac
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done
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for arg in "${NOT_SUPPORTED_ARGS[@]}"; do
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if uuid_valid $arg; then
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[ ! -z "$UUID" ] && help
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UUID=$arg
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fi
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done
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[ -z "$UUID" ] && help
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FILE_CONFIG="$(grep -E -l '^[^#]*UUID\s*=\s*"?'"$UUID" "$CONFIG_DIR"/*.conf | head -1)"
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[ ! -f "$FILE_CONFIG" ] && ERRO "No config for $UUID"
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INFO "Find $UUID in $FILE_CONFIG, use as conf"
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source "$FILE_CONFIG"
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## Pre checks
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{
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[ ! -d "$CONFIG_DIR" ] && ERRO "Missing: $CONFIG_DIR"
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[ "$UID" == "0" ] || ERRO "Must be run as root"
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}
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WORK_DIR="${WORK_DIR:-/run/bees/}"
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MNT_DIR="${MNT_DIR:-$WORK_DIR/mnt/$UUID}"
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BEESHOME="${BEESHOME:-$MNT_DIR/.beeshome}"
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BEESSTATUS="${BEESSTATUS:-$WORK_DIR/$UUID.status}"
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DB_SIZE="${DB_SIZE:-$((8192*AL128K))}"
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INFO "Check: Disk exists"
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if [ ! -b "/dev/disk/by-uuid/$UUID" ]; then
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ERRO "Missing disk: /dev/disk/by-uuid/$UUID"
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fi
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is_btrfs(){ [ "$(blkid -s TYPE -o value "$1")" == "btrfs" ]; }
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INFO "Check: Disk with btrfs"
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if ! is_btrfs "/dev/disk/by-uuid/$UUID"; then
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ERRO "Disk not contain btrfs: /dev/disk/by-uuid/$UUID"
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fi
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INFO "WORK DIR: $WORK_DIR"
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mkdir -p "$WORK_DIR" || exit 1
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INFO "MOUNT DIR: $MNT_DIR"
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mkdir -p "$MNT_DIR" || exit 1
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mount --make-private -osubvolid=5 /dev/disk/by-uuid/$UUID "$MNT_DIR" || exit 1
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if [ ! -d "$BEESHOME" ]; then
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INFO "Create subvol $BEESHOME for store bees data"
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btrfs sub cre "$BEESHOME"
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else
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btrfs sub show "$BEESHOME" &> /dev/null || ERRO "$BEESHOME MUST BE A SUBVOL!"
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fi
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# Check DB size
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{
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DB_PATH="$BEESHOME/beeshash.dat"
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touch "$DB_PATH"
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OLD_SIZE="$(du -b "$DB_PATH" | sed 's/\t/ /g' | cut -d' ' -f1)"
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NEW_SIZE="$DB_SIZE"
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if (( "$NEW_SIZE"%AL128K > 0 )); then
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ERRO "DB_SIZE Must be multiple of 128K"
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fi
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if (( "$OLD_SIZE" != "$NEW_SIZE" )); then
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INFO "Resize db: $OLD_SIZE -> $NEW_SIZE"
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[ -f "$BEESHOME/beescrawl.$UUID.dat" ] && rm "$BEESHOME/beescrawl.$UUID.dat"
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truncate -s $NEW_SIZE $DB_PATH
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fi
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chmod 700 "$DB_PATH"
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}
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MNT_DIR="$(realpath $MNT_DIR)"
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cd "$MNT_DIR"
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exec "$bees_bin" "${ARGUMENTS[@]}" $OPTIONS "$MNT_DIR"
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