install-stage1.sh

@@ -460,6 +460,7 @@ The installer will now create a system image and reboot the computer.
 press_any_key
 
 echo "Creating system image..."
-run_in_target /opt/void-usb/system-image --yes
+#TODO: make this work without user interaction
+run_in_target /opt/void-usb/system-image
 reboot
 #

notes_to_self.txt

@@ -29,8 +29,8 @@ when shutting down, let Xorg exit first, then run `loginctl {poweroff,reboot}`
 add polkit to common packages
 https://github.com/aarnt/octoxbps
 system-image
-  check that all output goes to current TTY
+  make all output appear on current TTY
-
+  sync before and after creating the image
 package selections:
   desktop
     icewm-full

opt/system-image

@@ -7,100 +7,82 @@ else
   TTY_OR_CONSOLE="/dev/console"
 fi
 
-function echo_tty {
-  if [ "$1" = "-n" ]; then
-    shift
-    echo -n "$@" > $TTY_OR_CONSOLE
-  else
-    echo "$@" > $TTY_OR_CONSOLE
-  fi
-}
 
 function yesno {
   unset DISCARD_ME
   while [ -z "$DISCARD_ME" ]; do
-    read -p "[y/n] " -n1 DISCARD_ME < $TTY_OR_CONSOLE > $TTY_OR_CONSOLE
+    read -p "[y/n] " -n1 DISCARD_ME < $TTY_OR_CONSOLE
     case "$DISCARD_ME" in
       y)
-        echo_tty
+        echo ""
         return 0
         ;;
       n)
-        echo_tty
+        echo ""
         return 1
         ;;
       *)
-        echo_tty " Please enter y for yes or n for no."
+        echo " Please enter y for yes or n for no."
         unset DISCARD_ME
         ;;
     esac
   done
 }
 
+# cutting off the leading slash allows us to just ignore empty lines below
+readarray -t MOUNT_LIST <<< "$(findmnt --output TARGET --noheadings --raw | sed -e 's|^/||' | sort)"
+# always ignore /tmp and the package cache
+EXCLUDE_LIST=("tmp" "var/cache/xbps")
+
+for I in ${!MOUNT_LIST[@]}; do
+  if [ ! -z "${MOUNT_LIST[$I]}" ]; then
+    FOUND=0
+    for J in ${!EXCLUDE_LIST[@]}; do
+      if grep "${EXCLUDE_LIST[$J]}" > /dev/null <<< "${MOUNT_LIST[$I]}"; then
+        FOUND=1
+        break
+      fi
+    done
+    # if no parent dir of ${MOUNT_LIST[$I]} is found in $EXCLUDE_LIST
+    if [ $FOUND -eq 0 ]; then
+      EXCLUDE_LIST+=("${MOUNT_LIST[$I]}")
+    fi
+  fi
+done
+
+touch /run/void-usb/system-image-excludes
+touch /run/void-usb/system-image-pseudo
+for I in ${!EXCLUDE_LIST[@]}; do
+  echo "/${EXCLUDE_LIST[$I]}" >> /run/void-usb/system-image-excludes
+  FILE_PERMS="$(stat -c '%a %u %g' "${EXCLUDE_LIST[$I]}")"
+  echo "\"/${EXCLUDE_LIST[$I]}\" d $FILE_PERMS" >> /run/void-usb/system-image-pseudo
+done
+
 #TODO: refuse to run if system is running
 
-if [ "$1" = "--yes" ]; then
+#TODO: add a way to force a new system image up without asking (for example a file in /run/void-usb)
-  DONT_ASK="true"
-else
-  DONT_ASK="false"
-
-  echo_tty "Create a new system image?"
-  echo_tty
-  echo_tty "This will replace the existing system image with a snapshot of the currently"
-  echo_tty "running system. Choosing no here will discard any newly installed programs,"
-  echo_tty "updates, system configuration changes, etc."
-  echo_tty
-  echo_tty "This should not affect your files in /home as they are stored to disk directly."
-  echo_tty "Check /TODO/README.txt for more information."
-  echo_tty
-  echo_tty "Creating a new system image will take some time."
-  echo_tty
-fi
 
 #TODO: colors (bright white / light gray for readability)
+echo "Create a new system image?
 
-if $DONT_ASK || yesno; then
+This will replace the existing system image with a snapshot of the currently
-  echo_tty -n "Generating exclusion list... "
+running system. Choosing no here will discard any newly installed programs,
-  # cutting off the leading slash allows us to just ignore empty lines below
+updates, system configuration changes, etc.
-  readarray -t MOUNT_LIST <<< "$(findmnt --output TARGET --noheadings --raw | sed -e 's|^/||' | sort)"
-  # always ignore /tmp and the package cache
-  EXCLUDE_LIST=("tmp" "var/cache/xbps")
 
-  for I in ${!MOUNT_LIST[@]}; do
+This should not affect your files in /home as they are stored to disk directly.
-    if [ ! -z "${MOUNT_LIST[$I]}" ]; then
+Check /TODO/README.txt for more information.
-      FOUND=0
-      for J in ${!EXCLUDE_LIST[@]}; do
-        if grep "${EXCLUDE_LIST[$J]}" > /dev/null <<< "${MOUNT_LIST[$I]}"; then
-          FOUND=1
-          break
-        fi
-      done
-      # if no parent dir of ${MOUNT_LIST[$I]} is found in $EXCLUDE_LIST
-      if [ $FOUND -eq 0 ]; then
-        EXCLUDE_LIST+=("${MOUNT_LIST[$I]}")
-      fi
-    fi
-  done
 
-  touch /run/void-usb/system-image-excludes
+Creating a new system image will take some time.
-  touch /run/void-usb/system-image-pseudo
+"
-  for I in ${!EXCLUDE_LIST[@]}; do
-    echo "/${EXCLUDE_LIST[$I]}" >> /run/void-usb/system-image-excludes
-    FILE_PERMS="$(stat -c '%a %u %g' "${EXCLUDE_LIST[$I]}")"
-    echo "\"/${EXCLUDE_LIST[$I]}\" d $FILE_PERMS" >> /run/void-usb/system-image-pseudo
-  done
-  echo_tty "done"
 
-  echo_tty "Building image..."
+if yesno; then
-  mksquashfs / /run/void-usb/container/new_squashfs.img -b 1M -comp xz -progress -noappend -pf /run/void-usb/system-image-pseudo -ef /run/void-usb/system-image-excludes > $TTY_OR_CONSOLE
+  echo "Building image..."
-
+  mksquashfs / /run/void-usb/container/new_squashfs.img -b 1M -comp xz -progress -noappend -pf /run/void-usb/system-image-pseudo -ef /run/void-usb/system-image-excludes
-  echo_tty -n "Moving new image in place... "
+  #TODO: check if enough disk space
+  # yes -> create new image next to old image
+  # no  -> create new image in RAM
+  #TODO: figure out when appending to existing squashfs is a good idea
   mv /run/void-usb/container/new_squashfs.img /run/void-usb/container/squashfs.img
-  echo_tty "done"
 else
-  echo_tty "Discarding system changes."
+  echo "Discarding system changes."
 fi
-
-echo_tty -n "Syncing... "
-sync
-echo_tty "done"