blob: 5cc1c92995c50893356c39f26e1459d72ea6917c (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
|
#!/bin/bash
UNIT=firefox@$DISPLAY
if systemctl --user is-active "$UNIT" >/dev/null
then
echo "Attemping to contact existing Firefox instance." >&2
# Ask the existing firefox to open a new window.
# Firefox does not include an official API to do this in a way that
# is not racy. If we merely do this:
#
# exec firefox "$@"
#
# ...then the unit could become inactive after our check, in which
# case this launches a new firefox outside the container!
#
# So instead, we launch the same command using a systemd container
# that prevents Firefox from forking off a new process.
#
# Well, actually, we let it fork off _one_ process, since otherwise
# it segfaults. But this _does_ happen to prevent it starting a new
# firefox instance! Firefox safely segfaults if it is limited this
# way while trying to start a new instance.
#
# A more "correct" approach is available here:
# https://github.com/ayosec/findfox
exec systemd-run \
--user \
--property Environment="DISPLAY=$DISPLAY" \
--property Environment=XAUTHORITY="$XAUTHORITY" \
--property TasksMax=2 \
--wait \
--pipe \
-q \
-- /bin/sh -c 'exec firefox "$@"' sh "$@"
else
systemctl --user reset-failed "$UNIT" 2>/dev/null
systemctl --user start "$UNIT"
fi
|
