This function resolves an arbitrary device specification (name, path, uuid,
or label) to a device name. It returns None if there is a failure.
---
storage/udev.py | 21 +++++++++++++++++++++
1 files changed, 21 insertions(+), 0 deletions(-)
diff --git a/storage/udev.py b/storage/udev.py
index 5c17a34..ebd2f27 100644
--- a/storage/udev.py
+++ b/storage/udev.py
@@ -29,6 +29,27 @@ from errors import *
import logging
log = logging.getLogger("storage")
+def udev_resolve_devspec(devspec):
+ if not devspec:
+ return None
+
+ ret = None
+ for dev in udev_get_block_devices():
+ if devspec.startswith("LABEL="):
+ if udev_device_get_label(dev) == devspec[6:]:
+ ret = dev
+ break
+ elif devspec.startswith("UUID="):
+ if udev_device_get_uuid(dev) == devspec[5:]:
+ ret = dev
+ break
+ else:
+ if udev_device_get_name(dev) == os.path.basename(devspec):
+ ret = dev
+ break
+
+ if ret:
+ return udev_device_get_name(dev)
def udev_get_block_devices():
udev_settle(timeout=30)
--
1.6.0.6
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