Replace old storage modules.

1 files changed, 58 insertions, 0 deletions

diff --git a/storage/miscutils.py b/storage/miscutils.py
new file mode 100644
index 000000000..b9c9740f1
--- /dev/null
+++ b/storage/miscutils.py
@@ -0,0 +1,58 @@
+# iutil.py stubs
+import sys
+import os
+
+import logging
+log = logging.getLogger("storage")
+
+def notify_kernel(path, action="change"):
+    """ Signal the kernel that the specified device has changed. """
+    log.debug("notifying kernel of '%s' event on device %s" % (action, path))
+    path = os.path.join(path, "uevent")
+    if not path.startswith("/sys/") or not os.access(path, os.W_OK):
+        log.debug("sysfs path '%s' invalid" % path)
+        raise ValueError("invalid sysfs path")
+
+    f = open(path, "a")
+    f.write("%s\n" % action)
+    f.close()
+
+def get_sysfs_path_by_name(dev_name, class_name="block"):
+    dev_name = os.path.basename(dev_name)
+    sysfs_class_dir = "/sys/class/%s" % class_name
+    dev_path = os.path.join(sysfs_class_dir, dev_name)
+    if os.path.exists(dev_path):
+        return dev_path
+
+import inspect
+def log_method_call(d, *args, **kwargs):
+    classname = d.__class__.__name__
+    methodname = inspect.stack()[1][3]
+    fmt = "%s.%s:"
+    fmt_args = [classname, methodname]
+    for arg in args:
+        fmt += " %s ;"
+        fmt_args.append(arg)
+
+    for k, v in kwargs.items():
+        fmt += " %s: %s ;"
+        fmt_args.extend([k, v])
+
+    log.debug(fmt % tuple(fmt_args))
+
+def numeric_type(num):
+    """ Verify that a value is given as a numeric data type.
+
+        Return the number if the type is sensible or raise ValueError
+        if not.
+    """
+    if num is None:
+        num = 0
+    elif not (isinstance(num, int) or \
+              isinstance(num, long) or \
+              isinstance(num, float)):
+        raise ValueError("value (%s) must be either a number or None" % num)
+
+    return num
+
+