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https://github.com/Zygo/bees.git
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0c6a4d00c8
Now with relative path filtering in place, we can now give sub spawning subshells in the frontend script. Signed-off-by: Kai Krakow <kai@kaishome.de>
121 lines
2.9 KiB
Bash
Executable File
121 lines
2.9 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(){ [[ "$1" =~ (1|Y|y) ]]; }
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## Global vars
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export BEESHOME BEESSTATUS
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export WORK_DIR CONFIG_DIR
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export CONFIG_FILE
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export UUID AL16M
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readonly AL16M="$((16*1024*1024))"
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readonly CONFIG_DIR=@PREFIX@/etc/bees/
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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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command -v @LIBEXEC_PREFIX@/bees &> /dev/null || ERRO "Missing 'bees' agent"
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## Parse args
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ARGUMENTS=()
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while [ $# -gt 0 ]; do
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case "$1" in
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-*)
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ARGUMENTS+=($1)
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;;
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*)
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if [ -z "$UUID" ]; then
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UUID="$1"
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else
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ERRO "Only one filesystem may be supplied"
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fi
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;;
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esac
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shift
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done
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case "$UUID" in
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*-*-*-*-*)
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FILE_CONFIG=""
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for file in "$CONFIG_DIR"/*.conf; do
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[ ! -f "$file" ] && continue
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if grep -q "$UUID" "$file"; then
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INFO "Find $UUID in $file, use as conf"
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FILE_CONFIG="$file"
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fi
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done
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[ ! -f "$FILE_CONFIG" ] && ERRO "No config for $UUID"
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source "$FILE_CONFIG"
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;;
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*)
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echo "beesd [options] <btrfs_uuid>"
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exit 1
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;;
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esac
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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:-$((64*AL16M))}"
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INFO "Check: Disk exists"
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if [ ! -b "/dev/disk/by-uuid/$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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umount_w(){ mountpoint -q "$1" && umount -l "$1"; }
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force_umount(){ umount_w "$MNT_DIR"; }
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trap force_umount SIGINT SIGTERM EXIT
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mount -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"%AL16M > 0 )); then
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ERRO "DB_SIZE Must be multiple of 16M"
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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="${MNT_DIR//\/\//\/}"
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cd $MNT_DIR && @LIBEXEC_PREFIX@/bees ${ARGUMENTS[@]} $OPTIONS "$MNT_DIR" 3>&1 2>&1
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exit 0
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