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Removed unused Blkctl.py. The functionality here has been taken over by the
new hotplug system. Signed-off-by: Ewan Mellor <ewan@xensource.com>
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emellor@ewan committed
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"""Xend interface to block control scripts.
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"""
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import os
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import os.path
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import sys
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import string
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import xen.util.process
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from xen.xend import XendRoot
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xroot = XendRoot.instance()
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"""Where network control scripts live."""
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SCRIPT_DIR = xroot.block_script_dir
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def block(op, type, dets, script=None):
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"""Call a block control script.
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Xend calls this with op 'bind' when it is about to export a block device
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(other than a raw partition). The script is called with unbind when a
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device is no longer in use and should be removed.
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@param op: operation (start, stop, status)
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@param type: type of block device (determines the script used)
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@param dets: arguments to the control script
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@param script: block script name
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"""
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if op not in ['bind', 'unbind']:
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raise ValueError('Invalid operation:' + op)
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# Special case phy devices - they don't require any (un)binding
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# Parallax also doesn't need script-based binding.
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if (type == 'phy') or (type == 'parallax'):
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return dets
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if script is None:
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script = xroot.get_block_script(type)
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script = os.path.join(SCRIPT_DIR, script)
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args = [op] + string.split(dets, ':')
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args = ' '.join(args)
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ret = xen.util.process.runscript(script + ' ' + args)
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if len(ret):
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return ret.splitlines()[0]
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