cd-dev

#!/bin/bash
# Single-user /dev/X mounting | Spencer Tipping
# Licensed under the terms of the MIT source code license

# You can use syntax like /dev/sda1::foo to mount the "foo" subvolume, in cases
# where this applies (e.g. btrfs).

cd_on '([-/]dev[-/].*)' cd_dev_mount cd_dev_umount

function cd_dev_mount {
  if [[ "$1" =~ ::(.*)$ ]]; then
    if [[ -n $ZSH_VERSION ]]; then
      local opts="-o subvol=${match[1]}"
      local device="${1%::*}"
    else
      local opts="-o subvol=${BASH_REMATCH[1]}"
      local device="${1%::*}"
    fi
  else
    local device="$1"
    local opts=''
  fi

  shift
  cd_mount "cd_as_root mount $opts" "$device" "$@"
}

function cd_dev_umount {
  cd_umount "cd_as_root umount" "$@"
}