feat: Store config in RAM (#559)

src/check.sh

@@ -1,11 +1,11 @@
 #!/usr/bin/env bash
 set -Eeuo pipefail
 
-[ -f "/run/qemu.end" ] && echo "QEMU is shutting down.." && exit 1
-[ ! -f "/run/qemu.pid" ] && echo "QEMU is not running yet.." && exit 0
+[ -f "/run/shm/qemu.end" ] && echo "QEMU is shutting down.." && exit 1
+[ ! -f "/run/shm/qemu.pid" ] && echo "QEMU is not running yet.." && exit 0
 
-file="/run/dsm.url"
-address="/run/qemu.ip"
+file="/run/shm/dsm.url"
+address="/run/shm/qemu.ip"
 
 [ ! -f  "$file" ] && echo "DSM has not enabled networking yet.." && exit 1
 

src/install.sh

@@ -139,7 +139,7 @@ if [ -f "$RDC" ]; then
     (( rc != 0 )) && error "Failed to extract $RDC, reason $rc" && exit 92
   fi
 
-  mkdir -p /run/extract
+  rm -rf /run/extract && mkdir -p /run/extract
   for file in $TMP/usr/lib/libcurl.so.4 \
               $TMP/usr/lib/libmbedcrypto.so.5 \
               $TMP/usr/lib/libmbedtls.so.13 \
@@ -211,6 +211,7 @@ else
 
 fi
 
+rm -rf /run/extract
 info "Install: Preparing system partition..."
 
 BOOT=$(find "$TMP" -name "*.bin.zip")
@@ -275,15 +276,8 @@ PKG="$TMP/packages"
 HDP="$TMP/synohdpack_img"
 
 [ ! -f "$HDA.tgz" ] && error "The PAT file contains no OS image." && exit 64
-
 mv "$HDA.tgz" "$HDA.txz"
 
-if [[ "$ROOT" != [Nn]* ]]; then
-
-  tar xpfJ "$HDA.txz" --absolute-names -C "$MOUNT/"
-
-fi
-
 [ -d "$PKG" ] && mv "$PKG/" "$MOUNT/.SynoUpgradePackages/"
 rm -f "$MOUNT/.SynoUpgradePackages/ActiveInsight-"*
 
@@ -301,6 +295,8 @@ NUMBLOCKS="622560" # (4980480 * 512) / 4096
 
 if [[ "$ROOT" != [Nn]* ]]; then
 
+  tar xpfJ "$HDA.txz" --absolute-names --skip-old-files -C "$MOUNT/"
+
   info "Install: Installing system partition..."
 
   mke2fs -q -t ext4 -b 4096 -d "$MOUNT/" -L "$LABEL" -F -E "offset=$OFFSET" "$SYSTEM" "$NUMBLOCKS"

src/network.sh

@@ -218,7 +218,7 @@ getInfo() {
 
   GATEWAY=$(ip r | grep default | awk '{print $3}')
   IP=$(ip address show dev "$VM_NET_DEV" | grep inet | awk '/inet / { print $2 }' | cut -f1 -d/)
-  echo "$IP" > /run/qemu.ip
+  echo "$IP" > /run/shm/qemu.ip
 
   return 0
 }

src/power.sh

@@ -10,10 +10,10 @@ API_HOST="127.0.0.1:2210"
 QEMU_TERM=""
 QEMU_PORT=7100
 QEMU_TIMEOUT=50
-QEMU_PID="/run/qemu.pid"
-QEMU_LOG="/run/qemu.log"
-QEMU_OUT="/run/qemu.out"
-QEMU_END="/run/qemu.end"
+QEMU_PID="/run/shm/qemu.pid"
+QEMU_LOG="/run/shm/qemu.log"
+QEMU_OUT="/run/shm/qemu.out"
+QEMU_END="/run/shm/qemu.end"
 
 if [[ "$KVM" == [Nn]* ]]; then
   API_TIMEOUT=$(( API_TIMEOUT*2 ))

src/print.sh

@@ -6,9 +6,9 @@ set -Eeuo pipefail
 info () { printf "%b%s%b" "\E[1;34m❯ \E[1;36m" "$1" "\E[0m\n" >&2; }
 error () { printf "%b%s%b" "\E[1;31m❯ " "ERROR: $1" "\E[0m\n" >&2; }
 
-file="/run/dsm.url"
-address="/run/qemu.ip"
-shutdown="/run/qemu.end"
+file="/run/shm/dsm.url"
+address="/run/shm/qemu.ip"
+shutdown="/run/shm/qemu.end"
 url="http://127.0.0.1:2210/read?command=10"
 
 resp_err="Guest returned an invalid response:"

src/reset.sh

@@ -31,17 +31,24 @@ VERS=$(qemu-system-x86_64 --version | head -n 1 | cut -d '(' -f 1)
 # Check folder
 
 STORAGE="/storage"
-[ ! -d "$STORAGE" ] && error "Storage folder ($STORAGE) not found!" && exit 13
+if [ ! -d "$STORAGE" ]; then
+  error "Storage folder ($STORAGE) not found!" && exit 13
+fi
+
+if [ ! -d "/run/shm" ]; then
+  if [ -d "/dev/shm" ]; then
+    ln -s /dev/shm /run/shm
+  else
+    error "Folder /dev/shm not found!" && exit 14
+  fi
+fi
 
 # Cleanup files
-
-rm -f /run/dsm.url
-rm -f /run/qemu.*
+rm -f /run/shm/qemu.*
+rm -f /run/shm/dsm.url
 
 # Cleanup dirs
-
 rm -rf /tmp/dsm
-rm -f /tmp/server.*
 rm -rf "$STORAGE/tmp"
 
 # Helper functions

src/server.sh

@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 set -eu
 
-TMP_FILE=$(mktemp -q /tmp/server.XXXXXX)
+TMP_FILE=$(mktemp -q /run/shm/server.XXXXXX)
 
 stop() {
   trap - SIGINT EXIT
@@ -53,7 +53,7 @@ else
   HTML=$(html "xxx")
 
   { echo "#!/bin/bash"
-    echo "[ -f \"/run/dsm.url\" ] && LOCATION=\$(cat \"/run/dsm.url\")"
+    echo "[ -f \"/run/shm/dsm.url\" ] && LOCATION=\$(cat \"/run/shm/dsm.url\")"
     echo "HTML=\"$HTML\"; [ -z \"\$LOCATION\" ] && BODY=\"$WAIT\" || BODY=\"$BODY\"; HTML=\${HTML/xxx/\$BODY}"
     echo "printf '%b' \"HTTP/1.1 200 OK\\nContent-Length: \${#HTML}\\nConnection: close\\n\\n\$HTML\""
   } > "$TMP_FILE"