[libvirt] [PATCH 1/3] storage: Introduce virStorageBackendZeroDeviceHeader

Create a wrapper/helper that can be used to call the storage backend wipe helper - storageBackendVolWipeLocalFile for future use by logical and disk backends to clear out the partition table rather than having each open code the same algorithm. Signed-off-by: John Ferlan <jferlan(a)redhat.com&gt; --- src/storage/storage_util.c | 18 ++++++++++++++++++ src/storage/storage_util.h | 4 ++++ 2 files changed, 22 insertions(+) diff --git a/src/storage/storage_util.c b/src/storage/storage_util.c index 8e25984..784df7a 100644 --- a/src/storage/storage_util.c +++ b/src/storage/storage_util.c @@ -4087,3 +4087,21 @@ virStorageBackendSCSIFindLUs(virStoragePoolObjPtr pool, return found; } + + +/* + * @path: Path to the device to initialize + * @size: Size to be cleared + * + * Clear out device header for the purpose of being able to write + * some sort of partition to the device. + * + * Returns 0 on success, -1 on failure with error message set + */ +int +virStorageBackendZeroDeviceHeader(const char *path, + unsigned long long size) +{ + return storageBackendVolWipeLocalFile(path, VIR_STORAGE_VOL_WIPE_ALG_ZERO, + size); +} diff --git a/src/storage/storage_util.h b/src/storage/storage_util.h index 602d3a0..756d140 100644 --- a/src/storage/storage_util.h +++ b/src/storage/storage_util.h @@ -167,4 +167,8 @@ virStorageBackendCreateQemuImgCmdFromVol(virConnectPtr conn, int virStorageBackendSCSIFindLUs(virStoragePoolObjPtr pool, uint32_t scanhost); +int +virStorageBackendZeroDeviceHeader(const char *path, + unsigned long long size); + #endif /* __VIR_STORAGE_UTIL_H__ */ -- 2.9.3