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[Qemu-devel] [PATCH] scripts/qemu-binfmt-conf.sh: allow clearing of entr
From: |
Alex Bennée |
Subject: |
[Qemu-devel] [PATCH] scripts/qemu-binfmt-conf.sh: allow clearing of entries |
Date: |
Tue, 3 Jul 2018 17:00:22 +0100 |
Currently running the script twice will fail with "sh: echo: I/O
error" as the registration is already complete. Add a new option
--clear to reset the entries to save the user doing it by hand.
Signed-off-by: Alex Bennée <address@hidden>
---
scripts/qemu-binfmt-conf.sh | 16 ++++++++++++++--
1 file changed, 14 insertions(+), 2 deletions(-)
diff --git a/scripts/qemu-binfmt-conf.sh b/scripts/qemu-binfmt-conf.sh
index d7eefda0b8..13ef4713e6 100755
--- a/scripts/qemu-binfmt-conf.sh
+++ b/scripts/qemu-binfmt-conf.sh
@@ -160,7 +160,7 @@ qemu_get_family() {
usage() {
cat <<EOF
Usage: qemu-binfmt-conf.sh [--qemu-path PATH][--debian][--systemd CPU]
- [--help][--credential yes|no][--exportdir PATH]
+ [--help][--clear][--credential yes|no][--exportdir
PATH]
Configure binfmt_misc to use qemu interpreter
@@ -176,6 +176,7 @@ Usage: qemu-binfmt-conf.sh [--qemu-path
PATH][--debian][--systemd CPU]
(default: $SYSTEMDDIR or $DEBIANDIR)
--credential: if yes, credential and security tokens are
calculated according to the binary to interpret
+ --clear: clear existing qemu binfmt registrations
To import templates with update-binfmts, use :
@@ -249,6 +250,13 @@ qemu_register_interpreter() {
qemu_generate_register > /proc/sys/fs/binfmt_misc/register
}
+qemu_clear_interpreter() {
+ if [ -e /proc/sys/fs/binfmt_misc/qemu-$cpu ]; then
+ echo "Removing qemu-$cpu as binfmt interpreter for $cpu"
+ echo -1 > /proc/sys/fs/binfmt_misc/qemu-$cpu
+ fi
+}
+
qemu_generate_systemd() {
echo "Setting $qemu as binfmt interpreter for $cpu for
systemd-binfmt.service"
qemu_generate_register > "$EXPORTDIR/qemu-$cpu.conf"
@@ -302,7 +310,7 @@ DEBIANDIR="/usr/share/binfmts"
QEMU_PATH=/usr/local/bin
FLAGS=""
-options=$(getopt -o ds:Q:e:hc: -l
debian,systemd:,qemu-path:,exportdir:,help,credential: -- "$@")
+options=$(getopt -o ds:Q:e:hc: -l
debian,systemd:,qemu-path:,exportdir:,help,clear,credential: -- "$@")
eval set -- "$options"
while true ; do
@@ -354,6 +362,10 @@ while true ; do
FLAGS=""
fi
;;
+ --clear)
+ shift
+ BINFMT_SET=qemu_clear_interpreter
+ ;;
*)
break
;;
--
2.17.1
- [Qemu-devel] [PATCH] scripts/qemu-binfmt-conf.sh: allow clearing of entries,
Alex Bennée <=