ACIL FM

Nama	Ukuran	Aksi
clk.py	2.46 MB	View DL Edit
config.py	1.27 MB	View DL Edit
constants.py.in	3.15 MB	View DL Edit
cpus.py	5.2 MB	View DL Edit
device.py	5.65 MB	View DL Edit
dmesg.py	5.82 MB	View DL Edit
genpd.py	2.52 MB	View DL Edit
lists.py	4.16 MB	View DL Edit
Makefile	667 B	View DL Edit
mm.py	13.98 MB	View DL Edit
modules.py	2.75 MB	View DL Edit
pgtable.py	10.08 MB	View DL Edit
proc.py	8.54 MB	View DL Edit
rbtree.py	4.25 MB	View DL Edit
symbols.py	6.92 MB	View DL Edit
tasks.py	3.55 MB	View DL Edit
timerlist.py	7.55 MB	View DL Edit
utils.py	5.03 MB	View DL Edit
__init__.py	55 B	View DL Edit

Edit file: /usr/src/kernels/5.14.0-611.27.1.el9_7.x86_64/scripts/gdb/linux/lists.py

#
# gdb helper commands and functions for Linux kernel debugging
#
#  list tools
#
# Copyright (c) Thiebaud Weksteen, 2015
#
# Authors:
#  Thiebaud Weksteen <thiebaud@weksteen.fr>
#
# This work is licensed under the terms of the GNU GPL version 2.
#

import gdb

from linux import utils

list_head = utils.CachedType("struct list_head")
hlist_head = utils.CachedType("struct hlist_head")
hlist_node = utils.CachedType("struct hlist_node")

def list_for_each(head):
    if head.type == list_head.get_type().pointer():
        head = head.dereference()
    elif head.type != list_head.get_type():
        raise TypeError("Must be struct list_head not {}"
                           .format(head.type))

if head['next'] == 0:
        gdb.write("list_for_each: Uninitialized list '{}' treated as empty\n"
                     .format(head.address))
        return

node = head['next'].dereference()
    while node.address != head.address:
        yield node.address
        node = node['next'].dereference()

def list_for_each_entry(head, gdbtype, member):
    for node in list_for_each(head):
        yield utils.container_of(node, gdbtype, member)

def hlist_for_each(head):
    if head.type == hlist_head.get_type().pointer():
        head = head.dereference()
    elif head.type != hlist_head.get_type():
        raise TypeError("Must be struct hlist_head not {}"
                           .format(head.type))

node = head['first'].dereference()
    while node.address:
        yield node.address
        node = node['next'].dereference()

def hlist_for_each_entry(head, gdbtype, member):
    for node in hlist_for_each(head):
        yield utils.container_of(node, gdbtype, member)

def list_check(head):
    nb = 0
    if (head.type == list_head.get_type().pointer()):
        head = head.dereference()
    elif (head.type != list_head.get_type()):
        raise gdb.GdbError('argument must be of type (struct list_head [*])')
    c = head
    try:
        gdb.write("Starting with: {}\n".format(c))
    except gdb.MemoryError:
        gdb.write('head is not accessible\n')
        return
    while True:
        p = c['prev'].dereference()
        n = c['next'].dereference()
        try:
            if p['next'] != c.address:
                gdb.write('prev.next != current: '
                          'current@{current_addr}={current} '
                          'prev@{p_addr}={p}\n'.format(
                              current_addr=c.address,
                              current=c,
                              p_addr=p.address,
                              p=p,
                          ))
                return
        except gdb.MemoryError:
            gdb.write('prev is not accessible: '
                      'current@{current_addr}={current}\n'.format(
                          current_addr=c.address,
                          current=c
                      ))
            return
        try:
            if n['prev'] != c.address:
                gdb.write('next.prev != current: '
                          'current@{current_addr}={current} '
                          'next@{n_addr}={n}\n'.format(
                              current_addr=c.address,
                              current=c,
                              n_addr=n.address,
                              n=n,
                          ))
                return
        except gdb.MemoryError:
            gdb.write('next is not accessible: '
                      'current@{current_addr}={current}\n'.format(
                          current_addr=c.address,
                          current=c
                      ))
            return
        c = n
        nb += 1
        if c == head:
            gdb.write("list is consistent: {} node(s)\n".format(nb))
            return

class LxListChk(gdb.Command):
    """Verify a list consistency"""

def __init__(self):
        super(LxListChk, self).__init__("lx-list-check", gdb.COMMAND_DATA,
                                        gdb.COMPLETE_EXPRESSION)

def invoke(self, arg, from_tty):
        argv = gdb.string_to_argv(arg)
        if len(argv) != 1:
            raise gdb.GdbError("lx-list-check takes one argument")
        list_check(gdb.parse_and_eval(argv[0]))

LxListChk()

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