[oe-commits] Laurentiu Palcu : qemuwrapper: use fallback in case the ELF binary is wrong

[git at git.openembedded.org]

Module: openembedded-core.git
Branch: dylan
Commit: 4a9365a72ab45da33d31dc2f2575a58d20467c9e
URL:    http://git.openembedded.org/?p=openembedded-core.git&a=commit;h=4a9365a72ab45da33d31dc2f2575a58d20467c9e

Author: Laurentiu Palcu <laurentiu.palcu at intel.com>
Date:   Fri Apr 26 11:03:58 2013 +0300

qemuwrapper: use fallback in case the ELF binary is wrong

This wrapper script is called mainly from intercept hooks and allarch
packages postinstalls. When multilib is used, the qemuwrapper script
points to the binary that matches the MACHINE architecture.

For example: if MACHINE=qemux86_64 and we activate multilib, then the
postinstalls for lib32 packages would call qemu-x86_64 with 32 bit
binaries and they would certainly fail.

This patch adds just a fallback method if the exit code of the previous
qemu call corresponds to "Invalid ELF image for this architecture"
error. This will allow us to have all postinstalls run on host.

(From OE-Core master rev: 0c6ddb84043f0f917543cdaf4814efc15cd0273f)

Signed-off-by: Laurentiu Palcu <laurentiu.palcu at intel.com>
Signed-off-by: Saul Wold <sgw at linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>

---

 .../recipes-devtools/qemu/qemuwrapper-cross_1.0.bb |   28 +++++++++++++++++++-
 1 files changed, 27 insertions(+), 1 deletions(-)

diff --git a/meta/recipes-devtools/qemu/qemuwrapper-cross_1.0.bb b/meta/recipes-devtools/qemu/qemuwrapper-cross_1.0.bb
index 41617a6..18f1892 100644
--- a/meta/recipes-devtools/qemu/qemuwrapper-cross_1.0.bb
+++ b/meta/recipes-devtools/qemu/qemuwrapper-cross_1.0.bb
@@ -9,7 +9,33 @@ do_install () {
 	install -d ${D}${bindir_crossscripts}/
 
 	echo "#!/bin/sh" > ${D}${bindir_crossscripts}/qemuwrapper
-	echo exec env ${@qemu_target_binary(d)} \"\$@\" >> ${D}${bindir_crossscripts}/qemuwrapper
+	qemu_binary=${@qemu_target_binary(d)}
+	echo "$qemu_binary \"\$@\"" >> ${D}${bindir_crossscripts}/qemuwrapper
+	fallback_qemu_bin=
+	case $qemu_binary in
+		"qemu-i386")
+			fallback_qemu_bin=qemu-x86_64
+			;;
+		"qemu-x86_64")
+			fallback_qemu_bin=qemu-i386
+			;;
+		*)
+			;;
+	esac
+
+	if [ -n "$fallback_qemu_bin" ]; then
+
+		cat >> ${D}${bindir_crossscripts}/qemuwrapper << EOF
+rc=\$?
+if [ \$rc = 255 ]; then
+	$fallback_qemu_bin "\$@"
+	rc=\$?
+fi
+exit \$rc
+EOF
+
+	fi
+
 	chmod +x ${D}${bindir_crossscripts}/qemuwrapper
 }