Reformatted and refactored some files

build-packages.sh

@@ -19,7 +19,6 @@ new=$(echo $api | grep -Po '"tag_name": "\K.*?(?=")')
 # Remove potential leftovers from a previous build
 rm -rf "$DESTDIR" "$OUTDIR"
 
-
 ## log2ram
 # Create directory
 install -Dm 644 "$STARTDIR/log2ram.service" "$DESTDIR/etc/systemd/system/log2ram.service"

install.sh

@@ -1,7 +1,13 @@
 #!/usr/bin/env sh
 
-systemctl -q is-active log2ram  && { echo "ERROR: log2ram service is still running. Please run \"sudo service log2ram stop\" to stop it."; exit 1; }
-[ "$(id -u)" -eq 0 ] || { echo "You need to be ROOT (sudo can be used)"; exit 1; }
+systemctl -q is-active log2ram && {
+    echo "ERROR: log2ram service is still running. Please run \"sudo service log2ram stop\" to stop it."
+    exit 1
+}
+[ "$(id -u)" -eq 0 ] || {
+    echo "You need to be ROOT (sudo can be used)"
+    exit 1
+}
 
 # log2ram
 mkdir -p /usr/local/bin/
@@ -10,17 +16,17 @@ install -m 644 log2ram-daily.service /etc/systemd/system/log2ram-daily.service
 install -m 644 log2ram-daily.timer /etc/systemd/system/log2ram-daily.timer
 install -m 755 log2ram /usr/local/bin/log2ram
 if [ ! -f /etc/log2ram.conf ]; then
-	install -m 644 log2ram.conf /etc/log2ram.conf
+    install -m 644 log2ram.conf /etc/log2ram.conf
 fi
 install -m 644 uninstall.sh /usr/local/bin/uninstall-log2ram.sh
 systemctl enable log2ram.service log2ram-daily.timer
 
 # logrotate
 if [ -d /etc/logrotate.d ]; then
-	install -m 644 log2ram.logrotate /etc/logrotate.d/log2ram
+    install -m 644 log2ram.logrotate /etc/logrotate.d/log2ram
 else
-	echo "##### Directory /etc/logrotate.d does not exist. #####"
-	echo "#####  Skipping log2ram.logrotate installation.  #####"
+    echo "##### Directory /etc/logrotate.d does not exist. #####"
+    echo "#####  Skipping log2ram.logrotate installation.  #####"
 fi
 
 # Remove a previous log2ram version

log2ram

@@ -9,18 +9,17 @@ fi
 LOG_NAME='log2ram.log'
 NO_RSYNC=${USE_RSYNC#true}
 
-isSafe () {
+## @fn is_safe()
+## @brief Check if hdd log exists
+is_safe() {
     [ -d "$HDD_LOG" ] || echo "ERROR: $HDD_LOG/ doesn't exist! Can't sync."
     [ -d "$HDD_LOG" ] || exit 1
 }
 
-remountOriginal() {
-    OPTION="$1"
-    mount -o remount,"$OPTION" "$HDD_LOG"
-}
-
-syncToDisk () {
-    isSafe
+## @fn sync_to_disk()
+## @brief Sync memory back to hard disk
+sync_to_disk() {
+    is_safe
 
     if [ -z "${NO_RSYNC}" -a -x "$(command -v rsync)" ]; then
         rsync -aXv --inplace --no-whole-file --delete-after "$RAM_LOG"/ "$HDD_LOG"/ 2>&1 | tee -a "$LOG2RAM_LOG"
@@ -29,8 +28,10 @@ syncToDisk () {
     fi
 }
 
-syncFromDisk () {
-    isSafe
+## @fn sync_from_disk()
+## @brief Sync hard disk to memory
+sync_from_disk() {
+    is_safe
 
     TP_SIZE=$SIZE
     if [ "$ZL2R" = true ]; then
@@ -42,7 +43,7 @@ syncFromDisk () {
         umount -l "$RAM_LOG"/
         umount -l "$HDD_LOG"/
         if [ "$MAIL" = true ]; then
-            echo "LOG2RAM : No place on RAM for \"$HDD_LOG/\" anymore, fallback on the disk" | mail -s 'Log2Ram Error' root;
+            echo "LOG2RAM : No place on RAM for \"$HDD_LOG/\" anymore, fallback on the disk" | mail -s 'Log2Ram Error' root
         fi
         exit 1
     fi
@@ -55,103 +56,105 @@ syncFromDisk () {
 
 }
 
-wait_for () {
-    while ! findmnt "$1" > /dev/null; do
-      sleep 0.1
-    done
-    
-    while [ ! -f "$1/log2ram.test" ]; do
-        touch "$1/log2ram.test"
+## @fn wait_for()
+## @brief Wait for directory and create test file to make sure the directory exists
+## @param param1 path to the directory
+wait_for() {
+    WAIT_PATH="$1"
+    while ! findmnt "$WAIT_PATH" >/dev/null; do
         sleep 0.1
     done
-    rm "$1/log2ram.test"
-}
 
-createZramLogDrive () {
-	# Check Zram Class created
-	if [ ! -d "/sys/class/zram-control" ]; then
-		modprobe zram
-		RAM_DEV='0'
-	else
-		RAM_DEV=$(cat /sys/class/zram-control/hot_add)
-	fi
-	echo "$COMP_ALG" > "/sys/block/zram${RAM_DEV}/comp_algorithm"
-	echo "$LOG_DISK_SIZE" > "/sys/block/zram${RAM_DEV}/disksize"
-	echo "$SIZE" > "/sys/block/zram${RAM_DEV}/mem_limit"
-	mke2fs -t ext4 "/dev/zram${RAM_DEV}"
+    while [ ! -f "$WAIT_PATH/log2ram.test" ]; do
+        touch "$WAIT_PATH/log2ram.test"
+        sleep 0.1
+    done
+    rm "$WAIT_PATH/log2ram.test"
 }
 
-make_log_dir () {
-    [ -d "$HDD_LOG" ] || mkdir "$HDD_LOG"
+## @fn create_zram_log_drive()
+## @brief Create zram log device
+create_zram_log_drive() {
+    # Check Zram Class created
+    if [ ! -d "/sys/class/zram-control" ]; then
+        modprobe zram
+        RAM_DEV='0'
+    else
+        RAM_DEV=$(cat /sys/class/zram-control/hot_add)
+    fi
+    echo "$COMP_ALG" >"/sys/block/zram${RAM_DEV}/comp_algorithm"
+    echo "$LOG_DISK_SIZE" >"/sys/block/zram${RAM_DEV}/disksize"
+    echo "$SIZE" >"/sys/block/zram${RAM_DEV}/mem_limit"
+    mke2fs -t ext4 "/dev/zram${RAM_DEV}"
 }
 
 case "$1" in
-    start)
-        IFS=';'
-        for i in $PATH_DISK; do
-            # Skip the path if the folder doesn't exist
-            [ ! -d "$i" ] && continue
-            
-            PATH_FIRST_PART="${i%/*}"
-            PATH_LAST_PART="${i##/*/}"
-            RAM_LOG="$i"
-            HDD_LOG="${PATH_FIRST_PART}/hdd.${PATH_LAST_PART}"
-            LOG2RAM_LOG="${RAM_LOG}/${LOG_NAME}"
-
-            make_log_dir
-
-            mount --bind "$RAM_LOG"/ "$HDD_LOG"/
-            mount --make-private "$HDD_LOG"/
-            wait_for "$HDD_LOG"
-
-            if [ "$ZL2R" = true ]; then
-                createZramLogDrive
-                mount -t ext4 -o nosuid,noexec,noatime,nodev,user=log2ram "/dev/zram${RAM_DEV}" "$RAM_LOG"/
-            else
-                mount -t tmpfs -o "nosuid,noexec,noatime,nodev,mode=0755,size=${SIZE}" log2ram "$RAM_LOG"/
-            fi
-            wait_for "$RAM_LOG"
-            syncFromDisk
-        done
-        exit 0
-        ;;
-
-    stop)
-        IFS=';'
-        for i in $PATH_DISK; do
-            PATH_FIRST_PART="${i%/*}"
-            PATH_LAST_PART="${i##/*/}"
-            RAM_LOG="$i"
-            HDD_LOG="${PATH_FIRST_PART}/hdd.${PATH_LAST_PART}"
-            LOG2RAM_LOG="${RAM_LOG}/${LOG_NAME}"
-
-            syncToDisk
-            #ZRAM_LOG=$(awk '$2 == "/var/log" {print $1}' /proc/mounts)
-            #ZRAM_LOG=$(echo ${ZRAM_LOG} | grep -o -E '[0-9]+')
-            umount -l "$RAM_LOG"/
-            umount -l "$HDD_LOG"/
-            # Unsure as even with Root permision denied
-            #echo ${ZRAM_LOG} > /sys/class/zram-control/hot_remove
-        done
-        exit 0
-        ;;
-
-    write)
-        IFS=';'
-        for i in $PATH_DISK; do
-            PATH_FIRST_PART="${i%/*}"
-            PATH_LAST_PART="${i##/*/}"
-            RAM_LOG="$i"
-            HDD_LOG="${PATH_FIRST_PART}/hdd.${PATH_LAST_PART}"
-            LOG2RAM_LOG="${RAM_LOG}/${LOG_NAME}"
-
-            syncToDisk
-        done
-        exit 0
-        ;;
-
-    *)
-        echo 'Usage: log2ram {start|stop|write}' >&2
-        exit 1
-        ;;
+start)
+    IFS=';'
+    for i in $PATH_DISK; do
+        # Skip the path if the folder doesn't exist
+        [ ! -d "$i" ] && continue
+
+        PATH_FIRST_PART="${i%/*}"
+        PATH_LAST_PART="${i##/*/}"
+        RAM_LOG="$i"
+        HDD_LOG="${PATH_FIRST_PART}/hdd.${PATH_LAST_PART}"
+        LOG2RAM_LOG="${RAM_LOG}/${LOG_NAME}"
+
+        [ -d "$HDD_LOG" ] || mkdir "$HDD_LOG"
+
+        mount --bind "$RAM_LOG"/ "$HDD_LOG"/
+        mount --make-private "$HDD_LOG"/
+        wait_for "$HDD_LOG"
+
+        if [ "$ZL2R" = true ]; then
+            create_zram_log_drive
+            mount -t ext4 -o nosuid,noexec,noatime,nodev,user=log2ram "/dev/zram${RAM_DEV}" "$RAM_LOG"/
+        else
+            mount -t tmpfs -o "nosuid,noexec,noatime,nodev,mode=0755,size=${SIZE}" log2ram "$RAM_LOG"/
+        fi
+        wait_for "$RAM_LOG"
+        sync_from_disk
+    done
+    exit 0
+    ;;
+
+stop)
+    IFS=';'
+    for i in $PATH_DISK; do
+        PATH_FIRST_PART="${i%/*}"
+        PATH_LAST_PART="${i##/*/}"
+        RAM_LOG="$i"
+        HDD_LOG="${PATH_FIRST_PART}/hdd.${PATH_LAST_PART}"
+        LOG2RAM_LOG="${RAM_LOG}/${LOG_NAME}"
+
+        sync_to_disk
+        #ZRAM_LOG=$(awk '$2 == "/var/log" {print $1}' /proc/mounts)
+        #ZRAM_LOG=$(echo ${ZRAM_LOG} | grep -o -E '[0-9]+')
+        umount -l "$RAM_LOG"/
+        umount -l "$HDD_LOG"/
+        # Unsure as even with Root permision denied
+        #echo ${ZRAM_LOG} > /sys/class/zram-control/hot_remove
+    done
+    exit 0
+    ;;
+
+write)
+    IFS=';'
+    for i in $PATH_DISK; do
+        PATH_FIRST_PART="${i%/*}"
+        PATH_LAST_PART="${i##/*/}"
+        RAM_LOG="$i"
+        HDD_LOG="${PATH_FIRST_PART}/hdd.${PATH_LAST_PART}"
+        LOG2RAM_LOG="${RAM_LOG}/${LOG_NAME}"
+
+        sync_to_disk
+    done
+    exit 0
+    ;;
+
+*)
+    echo 'Usage: log2ram {start|stop|write}' >&2
+    exit 1
+    ;;
 esac

log2ram.conf

@@ -36,4 +36,3 @@ COMP_ALG=lz4
 # lzo/lz4=2.1:1 compression ratio zlib=2.7:1 zstandard=2.9:1
 # Really a guestimate of a bit bigger than compression ratio whilst minimising 0.1% mem usage of disk size
 LOG_DISK_SIZE=100M
-

log2ram.service

@@ -9,9 +9,9 @@ IgnoreOnIsolate=yes
 
 [Service]
 Type=oneshot
-ExecStart= /usr/local/bin/log2ram start
-ExecStop= /usr/local/bin/log2ram stop
-ExecReload= /usr/local/bin/log2ram write
+ExecStart=/usr/local/bin/log2ram start
+ExecStop=/usr/local/bin/log2ram stop
+ExecReload=/usr/local/bin/log2ram write
 TimeoutStartSec=120
 RemainAfterExit=yes
 

uninstall.sh

@@ -1,26 +1,25 @@
 #!/usr/bin/env sh
 
-if dpkg -l log2ram 2> /dev/null; then
-  echo "Please run : apt remove log2ram"
-  exit 1
+if dpkg -l log2ram 2>/dev/null; then
+    echo "Please run : apt remove log2ram"
+    exit 1
 fi
 
-if [ "$(id -u)" -eq 0 ]
-then
-  echo "Not apt installed. Remove will continue with this script..."
-  systemctl stop log2ram.service log2ram-daily.timer
-  systemctl disable log2ram.service log2ram-daily.timer
-  rm -rf /etc/systemd/system/log2ram*
-  rm /usr/local/bin/log2ram
-  rm /etc/log2ram.conf
-  rm -f /etc/logrotate.d/log2ram
+if [ "$(id -u)" -eq 0 ]; then
+    echo "Not apt installed. Remove will continue with this script..."
+    systemctl stop log2ram.service log2ram-daily.timer
+    systemctl disable log2ram.service log2ram-daily.timer
+    rm -rf /etc/systemd/system/log2ram*
+    rm /usr/local/bin/log2ram
+    rm /etc/log2ram.conf
+    rm -f /etc/logrotate.d/log2ram
 
-  if [ -d /var/hdd.log ]; then
-    rm -r /var/hdd.log
-  fi
-  echo "Log2Ram is uninstalled, removing the uninstaller in progress"
-  rm /usr/local/bin/uninstall-log2ram.sh
-  echo "##### Reboot isn't needed #####"
+    if [ -d /var/hdd.log ]; then
+        rm -r /var/hdd.log
+    fi
+    echo "Log2Ram is uninstalled, removing the uninstaller in progress"
+    rm /usr/local/bin/uninstall-log2ram.sh
+    echo "##### Reboot isn't needed #####"
 else
-  echo "You need to be ROOT (sudo can be used)"
+    echo "You need to be ROOT (sudo can be used)"
 fi