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[Xen-changelog] [xen-unstable] Check phy: block device existence

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Subject:	[Xen-changelog] [xen-unstable] Check phy: block device existence
From:	Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>
Date:	Fri, 18 Jul 2008 11:30:10 -0700
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# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1216381498 -3600
# Node ID 27078831a864c38172587d9abd42b50f81fd6b58
# Parent  0d88b4b86428d2ae6349b261cd6f4fbe94421a4a
Check phy: block device existence

Signed-off-by: Masaki Kanno <kanno.masaki@xxxxxxxxxxxxxx>
---
 tools/examples/block |    8 ++++++++
 1 files changed, 8 insertions(+)

diff -r 0d88b4b86428 -r 27078831a864 tools/examples/block
--- a/tools/examples/block      Fri Jul 18 12:27:45 2008 +0100
+++ b/tools/examples/block      Fri Jul 18 12:44:58 2008 +0100
@@ -209,6 +209,14 @@ case "$command" in
         FRONTEND_ID=$(xenstore_read "$XENBUS_PATH/frontend-id")
         FRONTEND_UUID=$(xenstore_read_default \
             "/local/domain/$FRONTEND_ID/vm" 'unknown')
+
+        if [ -L "$dev" ]
+        then
+          dev=$(readlink -f "$dev") || fatal "$dev link does not exist."
+        fi
+        test -e "$dev" || fatal "$dev does not exist."
+        test -b "$dev" || fatal "$dev is not a block device."
+
         claim_lock "block"
         check_device_sharing "$dev" "$mode"
        write_dev "$dev"

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