mirror of
https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
synced 2024-12-26 21:13:11 +01:00
10b9d77bf1
Few new things available from now on: - Data deduplication. - Triple parity RAIDZ (RAIDZ3). - zfs diff. - zpool split. - Snapshot holds. - zpool import -F. Allows to rewind corrupted pool to earlier transaction group. - Possibility to import pool in read-only mode. MFC after: 1 month
142 lines
3.9 KiB
Python
142 lines
3.9 KiB
Python
#! /usr/bin/python2.6
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#
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# CDDL HEADER START
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#
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# The contents of this file are subject to the terms of the
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# Common Development and Distribution License (the "License").
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# You may not use this file except in compliance with the License.
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#
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# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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# or http://www.opensolaris.org/os/licensing.
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# See the License for the specific language governing permissions
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# and limitations under the License.
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#
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# When distributing Covered Code, include this CDDL HEADER in each
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# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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# If applicable, add the following below this CDDL HEADER, with the
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# fields enclosed by brackets "[]" replaced with your own identifying
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# information: Portions Copyright [yyyy] [name of copyright owner]
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#
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# CDDL HEADER END
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#
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# Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
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#
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"""This module provides utility functions for ZFS.
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zfs.util.dev -- a file object of /dev/zfs """
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import gettext
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import errno
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import os
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import solaris.misc
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# Note: this module (zfs.util) should not import zfs.ioctl, because that
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# would introduce a circular dependency
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errno.ECANCELED = 47
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errno.ENOTSUP = 48
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dev = open("/dev/zfs", "w")
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try:
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_ = gettext.translation("SUNW_OST_OSLIB", "/usr/lib/locale",
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fallback=True).gettext
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except:
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_ = solaris.misc.gettext
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def default_repr(self):
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"""A simple __repr__ function."""
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if self.__slots__:
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str = "<" + self.__class__.__name__
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for v in self.__slots__:
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str += " %s: %r" % (v, getattr(self, v))
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return str + ">"
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else:
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return "<%s %s>" % \
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(self.__class__.__name__, repr(self.__dict__))
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class ZFSError(StandardError):
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"""This exception class represents a potentially user-visible
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ZFS error. If uncaught, it will be printed and the process will
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exit with exit code 1.
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errno -- the error number (eg, from ioctl(2))."""
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__slots__ = "why", "task", "errno"
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__repr__ = default_repr
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def __init__(self, eno, task=None, why=None):
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"""Create a ZFS exception.
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eno -- the error number (errno)
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task -- a string describing the task that failed
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why -- a string describing why it failed (defaults to
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strerror(eno))"""
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self.errno = eno
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self.task = task
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self.why = why
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def __str__(self):
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s = ""
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if self.task:
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s += self.task + ": "
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if self.why:
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s += self.why
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else:
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s += self.strerror
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return s
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__strs = {
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errno.EPERM: _("permission denied"),
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errno.ECANCELED:
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_("delegated administration is disabled on pool"),
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errno.EINTR: _("signal received"),
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errno.EIO: _("I/O error"),
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errno.ENOENT: _("dataset does not exist"),
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errno.ENOSPC: _("out of space"),
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errno.EEXIST: _("dataset already exists"),
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errno.EBUSY: _("dataset is busy"),
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errno.EROFS:
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_("snapshot permissions cannot be modified"),
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errno.ENAMETOOLONG: _("dataset name is too long"),
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errno.ENOTSUP: _("unsupported version"),
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errno.EAGAIN: _("pool I/O is currently suspended"),
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}
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__strs[errno.EACCES] = __strs[errno.EPERM]
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__strs[errno.ENXIO] = __strs[errno.EIO]
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__strs[errno.ENODEV] = __strs[errno.EIO]
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__strs[errno.EDQUOT] = __strs[errno.ENOSPC]
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@property
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def strerror(self):
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return ZFSError.__strs.get(self.errno, os.strerror(self.errno))
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def nicenum(num):
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"""Return a nice string (eg "1.23M") for this integer."""
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index = 0;
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n = num;
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while n >= 1024:
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n /= 1024
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index += 1
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u = " KMGTPE"[index]
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if index == 0:
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return "%u" % n;
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elif n >= 100 or num & ((1024*index)-1) == 0:
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# it's an exact multiple of its index, or it wouldn't
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# fit as floating point, so print as an integer
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return "%u%c" % (n, u)
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else:
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# due to rounding, it's tricky to tell what precision to
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# use; try each precision and see which one fits
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for i in (2, 1, 0):
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s = "%.*f%c" % (i, float(num) / (1<<(10*index)), u)
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if len(s) <= 5:
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return s
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def append_with_opt(option, opt, value, parser):
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"""A function for OptionParser which appends a tuple (opt, value)."""
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getattr(parser.values, option.dest).append((opt, value))
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