sys/linux: mount btrfs tests

Add several unit tests that mount different versions of btrfs images, and
the .sh file that generates these tests.

1 files changed, 30 insertions, 0 deletions

diff --git a/tools/create_btrfs_image.sh b/tools/create_btrfs_image.sh
new file mode 100755
index 000000000..de21e6640
--- /dev/null
+++ b/tools/create_btrfs_image.sh
@@ -0,0 +1,30 @@
+#!/bin/bash
+# Copyright 2020 syzkaller project authors. All rights reserved.
+# Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
+
+# Currently disabled
+# declare -a Op1=("-d raid0 " "-d raid1 " "-d raid5 " "-d raid6 " "-d raid10 " "-d single " "-d dup ")
+declare -a Op1=("-M " "")
+declare -a Op2=("-O mixed-bg " "-O extref " "-O raid56 " "-O no-holes " "-O raid1c34 ")
+declare -a Op3=("-K " "")
+declare -a Op4=("--csum crc32c " "--csum xxhash " "--csum sha256 " "--csum blake2 ")
+declare -i dex=0
+
+dir=`dirname $0`
+echo $dir
+
+for op1 in "${Op1[@]}"; do
+  for op2 in "${Op2[@]}"; do
+    for op3 in "${Op3[@]}"; do
+      for op4 in "${Op4[@]}"; do
+        echo mkfs.btrfs ${op1}${op2}${op3}${op4} disk.raw
+        fallocate -l 128M disk.raw
+        mkfs.btrfs ${op1}${op2}${op3}${op4} disk.raw 
+        go run "$dir/syz-imagegen/imagegen.go" -image=./disk.raw -fs=btrfs > "$dir/../sys/linux/test/syz_image_mount_btrfs_$dex"
+        rm disk.raw
+        dex=dex+1
+      done
+    done
+  done
+done
+