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#!/bin/bash
# This script is meant to support common media managing utilities.
#
# Parameters:
# - list -- list media
# - mount <device> -- mount a device
# - unmount <path> -- unmount given mount point
#
# Supported utilities (only one is used, listed higher to lower priority):
# - udevil: udisks-like command-line tool with no D-Bus or daemon
# requirements: `udevil` and `devmon` commands (both are part of udevil)
# - udisks: first vesion of disk management D-Bus daemon
# requirements: `udisks` and `umount` commands
# - udisks2: second vesion of disk management D-Bus daemon
# requirements: `udisksctl` and either `python2` or `python3` with "dbus"
# module
function usage_error() {
echo "Usage: vifm-media list | mount <device> | unmount <path>"
exit 1
}
function list() {
while read -r dev; do
if [ "${dev:0:10}" = /dev/disk/ ]; then
continue
fi
local out=$(info "$dev")
if grep -qe '^\s*partition table:\s*$' <<< "$out"; then
# can't mount the whole drive
continue
fi
if grep -qe '^\s*removable:\s*0\s*$' <<< "$out" &&
grep -qe '^\s*system internal:\s*1\s*$' <<< "$out"; then
# skip drives which aren't detachable
continue
fi
if grep -qe '^\s*has media:\s*0\s*$' <<< "$out"; then
continue
fi
echo device="$dev"
local label=$(grep -m1 '^\s*label:.*$' <<< "$out" | sed 's/^[^:]*:\s*//')
echo "label=$label"
local paths=$(grep -m1 '^\s*mount paths:.*$' <<< "$out" | sed 's/^[^:]*:\s*//')
IFS=',' paths=( $paths )
for path in "${paths[@]}"; do
echo "mount-point=$path"
done
echo
done <<< "$("$monitor" --enumerate-device-files)"
}
if type -P devmon udevil &>/dev/null; then
monitor=devmon
function info() {
udevil info "$@"
}
function mount() {
devmon --mount "$1"
}
function unmount() {
devmon --unmount "$1"
}
elif type -P udisks umount &>/dev/null; then
monitor=udisks
function info() {
udisks --show-info "$@"
}
function mount() {
udisks --mount "$1"
}
function unmount() {
umount "$1"
}
elif python2 -c 'import dbus' &>/dev/null ||
${python3:=python3} -c 'import dbus' &>/dev/null &&
type -P udisksctl &>/dev/null; then
python=${python3:-python2}
function udisks2() {
$python - "$@" <<"EOF"
import dbus
import sys
def decode(array):
return bytearray(array).replace(b'\x00', b'').decode('utf-8')
def devs():
bus = dbus.SystemBus()
ud_manager_obj = bus.get_object('org.freedesktop.UDisks2',
'/org/freedesktop/UDisks2')
om = dbus.Interface(ud_manager_obj, 'org.freedesktop.DBus.ObjectManager')
for v in om.GetManagedObjects().values():
drive_info = v.get('org.freedesktop.UDisks2.Block', {})
part_table = v.get('org.freedesktop.UDisks2.PartitionTable')
usage = drive_info.get('IdUsage')
system = drive_info.get('HintSystem')
ro = drive_info.get('ReadOnly')
if usage == "filesystem" and \
not system and \
not ro and \
part_table is None:
device = drive_info.get('Device')
if device is not None:
device = decode(device)
fs = v.get('org.freedesktop.UDisks2.Filesystem', {})
yield (device, drive_info.get('IdLabel'), fs)
def list_usb():
for (device, label, fs) in devs():
print('device=%s' % device)
print('label=%s' % label)
for point in fs.get('MountPoints', {}):
point = decode(point)
print("mount-point=%s" % point)
def path_to_dev(path):
import os
path = os.path.normpath(path)
for (device, label, fs) in devs():
for point in fs.get('MountPoints', {}):
point = os.path.normpath(decode(point))
if point == path:
return device
return None
def mount(device):
bus = dbus.SystemBus()
obj = bus.get_object('org.freedesktop.UDisks2',
'/org/freedesktop/UDisks2/block_devices%s'%device[4:])
print(obj.Mount({}, dbus_interface='org.freedesktop.UDisks2.Filesystem'))
def unmount(path):
device = path_to_dev(path)
if device is None:
sys.exit(1)
bus = dbus.SystemBus()
obj = bus.get_object('org.freedesktop.UDisks2',
'/org/freedesktop/UDisks2/block_devices%s'%device[4:])
obj.Unmount({}, dbus_interface='org.freedesktop.UDisks2.Filesystem')
if len(sys.argv) < 2 or sys.argv[1] == 'list':
list_usb()
elif len(sys.argv) == 3 and sys.argv[1] == 'mount':
mount(sys.argv[2])
elif len(sys.argv) == 3 and sys.argv[1] == 'unmount':
unmount(sys.argv[2])
EOF
}
function list() {
udisks2 list
}
function mount() {
udisks2 mount "$1"
}
function unmount() {
udisks2 unmount "$1"
}
else
echo "Neither of the supported backends were found" \
"(udevil, udisks, udisks2)" >&2
exit 1
fi
case "$1" in
list)
if [ $# -ne 1 ]; then
usage_error
fi
list
;;
mount)
if [ $# -ne 2 ]; then
usage_error
fi
mount "$2"
;;
unmount)
if [ $# -ne 2 ]; then
usage_error
fi
unmount "$2"
;;
*)
usage_error
;;
esac
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