38f3e28d77
Use the output of git diff --full-index --binary anaconda-22.20.13-1..anaconda-23.19.10-1 from anaconda's git repository and fix-up merge conflicts.
129 lines
4.8 KiB
Python
129 lines
4.8 KiB
Python
#
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# Copyright (C) 2013 Red Hat, Inc.
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#
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# This copyrighted material is made available to anyone wishing to use,
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# modify, copy, or redistribute it subject to the terms and conditions of
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# the GNU General Public License v.2, or (at your option) any later version.
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# This program is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY expressed or implied, including the implied warranties of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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# Public License for more details. You should have received a copy of the
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# GNU General Public License along with this program; if not, write to the
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# Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA. Any Red Hat trademarks that are incorporated in the
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# source code or documentation are not subject to the GNU General Public
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# License and may only be used or replicated with the express permission of
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# Red Hat, Inc.
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#
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# Red Hat Author(s): Vratislav Podzimek <vpodzime@redhat.com>
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#
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"""
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Helper module with functions for informing user we are waiting for random
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data entropy.
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"""
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import time
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import select
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import sys
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import termios
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import errno
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import math
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from pyanaconda.progress import progress_message
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from pyanaconda.constants import MAX_ENTROPY_WAIT
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from pyanaconda.iutil import eintr_retry_call
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from pykickstart.constants import DISPLAY_MODE_GRAPHICAL
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from blivet.util import get_current_entropy
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from pyanaconda.i18n import _, P_
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def wait_for_entropy(msg, desired_entropy, ksdata):
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"""
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Show UI dialog/message for waiting for desired random data entropy.
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:param ksdata: kickstart data
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:type ksdata: pykickstart.base.BaseHandler
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:param desired_entropy: entropy level to wait for
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:type desired_entropy: int
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:returns: whether to force continuing regardless of the available entropy level
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:rtype: bool
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"""
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if ksdata.displaymode.displayMode == DISPLAY_MODE_GRAPHICAL:
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# cannot import globally because GUI code may be missing for text mode
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# in some cases
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from pyanaconda.ui.gui.spokes.lib.entropy_dialog import run_entropy_dialog
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progress_message(_("The system needs more random data entropy"))
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return run_entropy_dialog(ksdata, desired_entropy)
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else:
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return _tui_wait(msg, desired_entropy)
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def _tui_wait(msg, desired_entropy):
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"""Tell user we are waiting for entropy"""
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print(msg)
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print(_("Entropy can be increased by typing randomly on keyboard"))
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print(_("After %d minutes, the installation will continue regardless of the "
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"amount of available entropy") % (MAX_ENTROPY_WAIT / 60))
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fd = sys.stdin.fileno()
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termios_attrs_changed = False
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try:
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old = termios.tcgetattr(fd)
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new = termios.tcgetattr(fd)
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new[3] = new[3] & ~termios.ICANON & ~termios.ECHO
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new[6][termios.VMIN] = 1
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termios.tcsetattr(fd, termios.TCSANOW, new)
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termios_attrs_changed = True
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except termios.error as term_err:
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if term_err.args[0] == errno.ENOTTY:
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# "Inappropriate ioctl for device" --> terminal attributes not supported
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pass
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else:
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raise
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# wait for the entropy to become high enough or time has run out
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cur_entr = get_current_entropy()
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secs = 0
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while cur_entr < desired_entropy and secs <= MAX_ENTROPY_WAIT:
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remaining = (MAX_ENTROPY_WAIT - secs) / 60.0
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print(_("Available entropy: %(av_entr)s, Required entropy: %(req_entr)s [%(pct)d %%] (%(rem)d %(min)s remaining)")
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% {"av_entr": cur_entr, "req_entr": desired_entropy,
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"pct": int((float(cur_entr) / desired_entropy) * 100),
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"min": P_("minute", "minutes", remaining),
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"rem": math.ceil(remaining)})
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time.sleep(1)
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cur_entr = get_current_entropy()
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secs += 1
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# print the final state as well
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print(_("Available entropy: %(av_entr)s, Required entropy: %(req_entr)s [%(pct)d %%]")
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% {"av_entr": cur_entr, "req_entr": desired_entropy,
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"pct": int((float(cur_entr) / desired_entropy) * 100)})
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if secs <= MAX_ENTROPY_WAIT:
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print(_("Enough entropy gathered, please stop typing."))
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force_cont = False
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else:
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print(_("Giving up, time (%d minutes) ran out.") % (MAX_ENTROPY_WAIT / 60))
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force_cont = True
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# we are done
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# first let the user notice we are done and stop typing
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time.sleep(5)
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# and then just read everything from the input buffer and revert the
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# termios state
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data = "have something"
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while sys.stdin in eintr_retry_call(select.select, [sys.stdin], [], [], 0)[0] and data:
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# just read from stdin and scratch the read data
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data = sys.stdin.read(1)
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if termios_attrs_changed:
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termios.tcsetattr(fd, termios.TCSAFLUSH, old)
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return force_cont
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