701ced5ddb
Apply diff anaconda-21.48.21-1..anaconda-22.20.13-1
181 lines
5.5 KiB
Python
181 lines
5.5 KiB
Python
#
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# isys.py - installer utility functions and glue for C module
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#
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# Copyright (C) 2001-2013 Red Hat, Inc.
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# All rights reserved.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# Author(s): Matt Wilson <msw@redhat.com>
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# Erik Troan <ewt@redhat.com>
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# Jeremy Katz <katzj@redhat.com>
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#
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try:
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from pyanaconda import _isys
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except ImportError:
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# We're running in some sort of testing mode, in which case we can fix
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# up PYTHONPATH and just do this basic import.
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import _isys
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import blivet.arch
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import time
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import datetime
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import pytz
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import logging
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log = logging.getLogger("anaconda")
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if blivet.arch.getArch() in ["ppc64", "ppc64le"]:
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MIN_RAM = 768
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GUI_INSTALL_EXTRA_RAM = 512
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else:
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MIN_RAM = 320
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GUI_INSTALL_EXTRA_RAM = 90
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MIN_GUI_RAM = MIN_RAM + GUI_INSTALL_EXTRA_RAM
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SQUASHFS_EXTRA_RAM = 750
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NO_SWAP_EXTRA_RAM = 200
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## Flush filesystem buffers.
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def sync ():
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# TODO: This can be replaced with os.sync in Python 3.3
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return _isys.sync ()
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ISO_BLOCK_SIZE = 2048
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## Determine if a file is an ISO image or not.
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# @param file The full path to a file to check.
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# @return True if ISO image, False otherwise.
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def isIsoImage(path):
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try:
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with open(path, "rb") as isoFile:
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for blockNum in range(16, 100):
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isoFile.seek(blockNum * ISO_BLOCK_SIZE + 1)
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if isoFile.read(5) == "CD001":
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return True
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except IOError:
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pass
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return False
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isPAE = None
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def isPaeAvailable():
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global isPAE
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if isPAE is not None:
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return isPAE
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isPAE = False
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if not blivet.arch.isX86():
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return isPAE
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f = open("/proc/cpuinfo", "r")
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lines = f.readlines()
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f.close()
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for line in lines:
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if line.startswith("flags") and line.find("pae") != -1:
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isPAE = True
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break
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return isPAE
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def isLpaeAvailable():
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with open("/proc/cpuinfo", "r") as fobj:
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for line in fobj:
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if line.startswith("Features") and "lpae" in line.split():
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return True
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return False
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def set_system_time(secs):
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"""
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Set system time to time given as a number of seconds since the Epoch.
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:param secs: a number of seconds since the Epoch to set system time to
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:type secs: int
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"""
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_isys.set_system_time(secs)
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log.info("System time set to %s UTC", time.asctime(time.gmtime(secs)))
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def set_system_date_time(year=None, month=None, day=None, hour=None, minute=None,
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second=None, tz=None):
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"""
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Set system date and time given by the parameters as numbers. If some
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parameter is missing or None, the current system date/time field is used
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instead (i.e. the value is not changed by this function).
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:type year, month, ..., second: int
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"""
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# If no timezone is set, use UTC
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if not tz:
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tz = pytz.UTC
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# get the right values
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now = datetime.datetime.now(tz)
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year = year if year is not None else now.year
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month = month if month is not None else now.month
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day = day if day is not None else now.day
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hour = hour if hour is not None else now.hour
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minute = minute if minute is not None else now.minute
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second = second if second is not None else now.second
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set_date = datetime.datetime(year, month, day, hour, minute, second, tzinfo=tz)
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# Calculate the number of seconds between this time and timestamp 0
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epoch = datetime.datetime.fromtimestamp(0, pytz.UTC)
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timestamp = (set_date - epoch).total_seconds()
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set_system_time(timestamp)
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def total_memory():
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"""Returns total system memory in kB (given to us by /proc/meminfo)"""
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with open("/proc/meminfo", "r") as fobj:
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for line in fobj:
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if not line.startswith("MemTotal"):
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# we are only interested in the MemTotal: line
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continue
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fields = line.split()
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if len(fields) != 3:
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log.error("unknown format for MemTotal line in /proc/meminfo: %s", line.rstrip())
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raise RuntimeError("unknown format for MemTotal line in /proc/meminfo: %s" % line.rstrip())
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try:
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memsize = int(fields[1])
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except ValueError:
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log.error("ivalid value of MemTotal /proc/meminfo: %s", fields[1])
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raise RuntimeError("ivalid value of MemTotal /proc/meminfo: %s" % fields[1])
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# Because /proc/meminfo only gives us the MemTotal (total physical
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# RAM minus the kernel binary code), we need to round this
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# up. Assuming every machine has the total RAM MB number divisible
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# by 128.
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memsize /= 1024
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memsize = (memsize / 128 + 1) * 128
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memsize *= 1024
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log.info("%d kB (%d MB) are available", memsize, memsize / 1024)
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return memsize
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log.error("MemTotal: line not found in /proc/meminfo")
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raise RuntimeError("MemTotal: line not found in /proc/meminfo")
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installSyncSignalHandlers = _isys.installSyncSignalHandlers
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