rootfs: overlays: blktests: add blktests script

Add blktests test script.

Signed-off-by: Vignesh Raman <[email protected]>

Author: vigneshraman

config/rootfs/debos/overlays/blktests/blktests.sh

@@ -0,0 +1,45 @@
+#!/bin/bash
+set -euo pipefail
+
+TEST_GROUP="${1:-}"
+TEST_DEV="${2:-}"
+
+if [ -z "$TEST_GROUP" ] || [ -z "$TEST_DEV" ]; then
+    echo "Usage: $0 <TEST_GROUP> <TEST_DEV>"
+    exit 1
+fi
+
+LOOPBACK_REQUIRED=false
+LOOPDEV=""
+LOOPFILE=""
+
+if [[ "$TEST_DEV" =~ ^/dev/loop[0-9]+$ ]]; then
+    LOOPBACK_REQUIRED=true
+fi
+
+cleanup() {
+    if [ "$LOOPBACK_REQUIRED" = true ] && [ -n "$LOOPDEV" ]; then
+        losetup -d "$LOOPDEV" || true
+        rm -f "$LOOPFILE"
+    fi
+}
+trap cleanup EXIT
+
+# Remove this after kernel-ci switches to upstream blktests
+BLKTESTS_URL="https://github.com/linux-blktests/blktests.git"
+BLKTESTS_SHA=8c610b5b
+git clone -b ${BLKTESTS_SHA} ${BLKTESTS_URL}
+cd blktests
+
+if [ "$LOOPBACK_REQUIRED" = true ]; then
+    LOOPFILE=$(mktemp /tmp/loopdisk.XXXX.img)
+    truncate -s 1G "$LOOPFILE"
+    LOOPDEV=$(losetup -f --show "$LOOPFILE")
+    echo "Created loop device: $LOOPDEV"
+    TEST_DEV="$LOOPDEV"
+fi
+
+echo "TEST_DEVS=('$TEST_DEV')" > config
+
+mkdir -p /tmp/blktests-results
+./check -c config "$TEST_GROUP" --output /tmp/blktests-results