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From 5d4d146cfe4ab4e52c8ba0300f6a05949bc558d4 Mon Sep 17 00:00:00 2001
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Message-Id: <5d4d146cfe4ab4e52c8ba0300f6a05949bc558d4@dist-git>
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From: John Ferlan <jferlan@redhat.com>
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Date: Wed, 26 Apr 2017 08:41:11 -0400
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Subject: [PATCH] storage: Introduce virStorageBackendZeroPartitionTable
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https://bugzilla.redhat.com/show_bug.cgi?id=1439132
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Create a wrapper/helper that can be used to call the storage backend
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wipe helper - storageBackendVolWipeLocalFile for future use by logical
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and disk backends to clear out the partition table rather than having
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each open code the same algorithm.
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(cherry picked from commit e8b02124580e134c8a6d51750016811b1d68b80e)
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Signed-off-by: John Ferlan <jferlan@redhat.com>
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Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
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---
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src/storage/storage_util.c | 22 ++++++++++++++++++++++
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src/storage/storage_util.h | 4 ++++
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2 files changed, 26 insertions(+)
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diff --git a/src/storage/storage_util.c b/src/storage/storage_util.c
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index 8dbdc770e..da2396b34 100644
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--- a/src/storage/storage_util.c
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+++ b/src/storage/storage_util.c
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@@ -4071,3 +4071,25 @@ virStorageBackendSCSIFindLUs(virStoragePoolObjPtr pool,
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return found;
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}
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+
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+
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+/*
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+ * @path: Path to the device to initialize
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+ * @size: Size to be cleared
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+ *
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+ * Zero out possible partition table information for the specified
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+ * bytes from the start of the @path and from the end of @path
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+ *
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+ * Returns 0 on success, -1 on failure with error message set
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+ */
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+int
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+virStorageBackendZeroPartitionTable(const char *path,
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+ unsigned long long size)
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+{
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+ if (storageBackendVolWipeLocalFile(path, VIR_STORAGE_VOL_WIPE_ALG_ZERO,
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+ size, false) < 0)
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+ return -1;
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+
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+ return storageBackendVolWipeLocalFile(path, VIR_STORAGE_VOL_WIPE_ALG_ZERO,
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+ size, true);
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+}
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diff --git a/src/storage/storage_util.h b/src/storage/storage_util.h
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index fa3b6522c..2c48027f4 100644
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--- a/src/storage/storage_util.h
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+++ b/src/storage/storage_util.h
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@@ -163,4 +163,8 @@ virStorageBackendCreateQemuImgCmdFromVol(virConnectPtr conn,
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int virStorageBackendSCSIFindLUs(virStoragePoolObjPtr pool,
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uint32_t scanhost);
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+int
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+virStorageBackendZeroPartitionTable(const char *path,
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+ unsigned long long size);
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+
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#endif /* __VIR_STORAGE_UTIL_H__ */
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--
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2.12.2
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