Enable uname substitution in schroot sessions

This is a handy trick when building native old-gen
toolchains on new-gen machines.

Change-Id: I6f97bfa8133b994dad641e3c497b4a5a7ee77d84

1 files changed, 15 insertions, 1 deletions

diff --git a/scripts/test-schroot.sh b/scripts/test-schroot.sh
index 447df314..6f7bf685 100755
--- a/scripts/test-schroot.sh
+++ b/scripts/test-schroot.sh
@@ -17,8 +17,9 @@ target_ssh_opts=""
 host_ssh_opts=""
 profile="tcwg-test"
 multilib_path="lib"
+uname=""
 
-while getopts "a:bd:e:fh:l:mo:p:P:qv" OPTION; do
+while getopts "a:bd:e:fh:l:mo:p:P:qu:v" OPTION; do
     case $OPTION in
 	a) arch=$OPTARG ;;
 	b) begin_session=true ;;
@@ -32,6 +33,7 @@ while getopts "a:bd:e:fh:l:mo:p:P:qv" OPTION; do
 	p) host_ssh_opts="$OPTARG" ;;
 	P) profile="$OPTARG" ;;
 	q) exec > /dev/null ;;
+	u) uname="$OPTARG" ;;
 	v) set -x ;;
     esac
 done
@@ -246,6 +248,18 @@ EOF
     echo $target:$port installed sysroot $sysroot
 fi
 
+if [ x"$uname" != x"" ]; then
+    old_uname="$($rsh root@$target "uname -m")"
+    $rsh root@$target "mv /bin/uname /bin/uname.real"
+    $rsh root@$target "cat > /bin/uname" <<EOF
+#!/bin/bash
+
+/bin/uname.real "\$@" | sed -e "s/$old_uname/$uname/g"
+exit \${PIPESTATUS[0]}
+EOF
+    $rsh root@$target "chmod a+x /bin/uname"
+fi
+
 if $ssh_master; then
     ssh $orig_target_ssh_opts -o Port=$port -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -fMN $target
 fi