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authorlassulus <lassulus@lassul.us>2019-01-16 11:17:20 +0100
committerlassulus <lassulus@lassul.us>2019-01-16 11:17:20 +0100
commit879b6d319a18dce6e5f686c997643c78229469a8 (patch)
treec21b0eef944b80adecb7d95aa79ba4a475ef6dd1 /tv/5pkgs/simple/xkiller.nix
parenta1d9c22bbd8eff9198f378e9007ddf4cb9ee2e5c (diff)
parent2d2ab95f0707209c4c248d43cb57877a50a37991 (diff)
Merge remote-tracking branch 'ni/master'
Diffstat (limited to 'tv/5pkgs/simple/xkiller.nix')
-rw-r--r--tv/5pkgs/simple/xkiller.nix25
1 files changed, 25 insertions, 0 deletions
diff --git a/tv/5pkgs/simple/xkiller.nix b/tv/5pkgs/simple/xkiller.nix
new file mode 100644
index 000000000..8d8f01690
--- /dev/null
+++ b/tv/5pkgs/simple/xkiller.nix
@@ -0,0 +1,25 @@
+{ pkgs }:
+pkgs.writeDash "xkiller" ''
+ set -efu
+ exec >&2
+ ${pkgs.iproute}/bin/ss -lp src unix:/tmp/.X11-unix/X* |
+ ${pkgs.gnused}/bin/sed -n '
+ s|.*/tmp/.X11-unix/X\([0-9]\+\)\>.*("X[^"]*",pid=\([0-9]\+\)\>.*|\1 \2|p
+ ' |
+ while read -r display pid; do
+ {
+ exit_code=$(
+ DISPLAY=:$display ${pkgs.coreutils}/bin/timeout 1 \
+ ${pkgs.xorg.xset}/bin/xset q >/dev/null 2>&1 &&
+ echo 0 || echo $?
+ )
+ if test $exit_code = 124; then
+ echo "X on display :$display is locked up; killing PID $pid..."
+ ${pkgs.coreutils}/bin/kill -SIGKILL "$pid"
+ else
+ echo "X on display :$display is healthy"
+ fi
+ } &
+ done
+ wait
+''