[PATCH v8 6/9] qemu-binfmt-conf.sh: honour QEMU_PATH and/or QEMU_SUFFIX

[Unai Martinez-Corral <unai.martinezcorral@ehu.eus>]

Allow to set 'path' or 'suffix' through environment variables,
consistently with 'persistent' and 'credential'.

Signed-off-by: Unai Martinez-Corral <unai.martinezcorral@ehu.eus>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
---
 scripts/qemu-binfmt-conf.sh | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/scripts/qemu-binfmt-conf.sh b/scripts/qemu-binfmt-conf.sh
index 2a035394e0..80ec164eab 100755
--- a/scripts/qemu-binfmt-conf.sh
+++ b/scripts/qemu-binfmt-conf.sh
@@ -181,7 +181,7 @@ Options and associated environment variables:
 Argument             Env-variable     Description
 -h|--help                             display this usage
 -Q|--path PATH       QEMU_PATH        set path to qemu interpreter(s)
--F|--suffix SUFFIX                    add a suffix to the default interpreter name
+-F|--suffix SUFFIX   QEMU_SUFFIX      add a suffix to the default interpreter name
 -p|--persistent      QEMU_PERSISTENT  (yes) load the interpreter and keep it in memory; all future
                                       uses are cloned from the open file.
 -c|--credential      QEMU_CREDENTIAL  (yes) credential and security tokens are calculated according
@@ -195,6 +195,7 @@ Argument             Env-variable     Description
 
 Defaults:
 QEMU_PATH=$QEMU_PATH
+QEMU_SUFFIX=$QEMU_SUFFIX
 QEMU_PERSISTENT=$QEMU_PERSISTENT
 QEMU_CREDENTIAL=$QEMU_CREDENTIAL
 
@@ -327,13 +328,11 @@ BINFMT_SET=qemu_register_interpreter
 SYSTEMDDIR="/etc/binfmt.d"
 DEBIANDIR="/usr/share/binfmts"
 
-QEMU_PATH=/usr/local/bin
-
+QEMU_PATH="${QEMU_PATH:-/usr/local/bin}"
+QEMU_SUFFIX="${QEMU_SUFFIX:-}"
 QEMU_PERSISTENT="${QEMU_PERSISTENT:-no}"
 QEMU_CREDENTIAL="${QEMU_CREDENTIAL:-no}"
 
-QEMU_SUFFIX=""
-
 options=$(getopt -o ds:Q:S:e:hcp -l debian,systemd:,path:,suffix:,exportdir:,help,credential,persistent -- "$@")
 eval set -- "$options"
 
-- 
2.25.1