X-Git-Url: http://git.annexia.org/?a=blobdiff_plain;f=2019-fosdem%2Fbadblocks.sh;fp=2019-fosdem%2Fbadblocks.sh;h=863c6b53d8d6088096416c2f37e6e7c26ffc0441;hb=0d929b23526e74b6f5a49e34b0019f928c7bfec1;hp=0000000000000000000000000000000000000000;hpb=4507e94c3ba68dbf455a9399de5f4ac1732eb5b7;p=libguestfs-talks.git

diff --git a/2019-fosdem/badblocks.sh b/2019-fosdem/badblocks.sh
new file mode 100755
index 0000000..863c6b5
--- /dev/null
+++ b/2019-fosdem/badblocks.sh
@@ -0,0 +1,14 @@
+#!/bin/bash
+
+case "$1" in
+    open) ;;
+    get_size) echo 64M ;;
+    pread)
+        if [ $4 -le 100000 ] && [ $(( $4+$3 )) -gt 100000 ]; then
+            echo EIO Bad block >&2
+            exit 1
+        else
+            dd if=/dev/zero count=$3 iflag=count_bytes
+        fi ;;
+    *) exit 2 ;;
+esac