Source code for crash.commands.syscmd

# -*- coding: utf-8 -*-
# vim:set shiftwidth=4 softtabstop=4 expandtab textwidth=79:
"""
SUMMARY
-------

Display system information and configuration data
::

  sys [config]

DESCRIPTION
-----------

  This command displays system-specific data. If no arguments are entered,
  the same system data shown during crash invocation is shown.

    ``config``  If the kernel was configured with ``CONFIG_IKCONFIG``, then
                dump the in-kernel configuration data.

EXAMPLES
--------

  Display essential system information:

::

    py-crash> sys config
          KERNEL: vmlinux.4
        DUMPFILE: lcore.cr.4
            CPUS: 4
            DATE: Mon Oct 11 18:48:55 1999
          UPTIME: 10 days, 14:14:39
    LOAD AVERAGE: 0.74, 0.23, 0.08
           TASKS: 77
        NODENAME: test.mclinux.com
         RELEASE: 2.2.5-15smp
         VERSION: #24 SMP Mon Oct 11 17:41:40 CDT 1999
         MACHINE: i686  (500 MHz)
          MEMORY: 1 GB
"""

import argparse

from crash.commands import Command, ArgumentParser
from crash.commands import CommandLineError
from crash.cache.syscache import utsname, config, kernel

class SysCommand(Command):
    """system data"""
    def __init__(self, name: str) -> None:

        parser = ArgumentParser(prog=name)

        parser.add_argument('config', nargs='?')

        Command.__init__(self, name, parser)

    @staticmethod
    def show_default() -> None:
        print("      UPTIME: {}".format(kernel.uptime))
        print("LOAD AVERAGE: {}".format(kernel.loadavg))
        print("    NODENAME: {}".format(utsname.nodename))
        print("     RELEASE: {}".format(utsname.release))
        print("     VERSION: {}".format(utsname.version))
        print("     MACHINE: {}".format(utsname.machine))

    def execute(self, args: argparse.Namespace) -> None:
        if args.config:
            if args.config == "config":
                print(config)
            else:
                raise CommandLineError(f"error: unknown option: {args.config}")
        else:
            self.show_default()

SysCommand("sys")