| Server IP : 74.208.127.88 / Your IP : 216.73.216.200 Web Server : Apache/2.4.41 (Ubuntu) System : Linux ubuntu 5.4.0-163-generic #180-Ubuntu SMP Tue Sep 5 13:21:23 UTC 2023 x86_64 User : www-data ( 33) PHP Version : 7.4.3-4ubuntu2.29 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : OFF | Sudo : ON | Pkexec : ON Directory : /proc/self/root/lib/modules/5.4.0-163-generic/build/scripts/gdb/linux/ |
Upload File : |
#
# gdb helper commands and functions for Linux kernel debugging
#
# task & thread tools
#
# Copyright (c) Siemens AG, 2011-2013
#
# Authors:
# Jan Kiszka <jan.kiszka@siemens.com>
#
# This work is licensed under the terms of the GNU GPL version 2.
#
import gdb
from linux import utils
task_type = utils.CachedType("struct task_struct")
def task_lists():
task_ptr_type = task_type.get_type().pointer()
init_task = gdb.parse_and_eval("init_task").address
t = g = init_task
while True:
while True:
yield t
t = utils.container_of(t['thread_group']['next'],
task_ptr_type, "thread_group")
if t == g:
break
t = g = utils.container_of(g['tasks']['next'],
task_ptr_type, "tasks")
if t == init_task:
return
def get_task_by_pid(pid):
for task in task_lists():
if int(task['pid']) == pid:
return task
return None
class LxTaskByPidFunc(gdb.Function):
"""Find Linux task by PID and return the task_struct variable.
$lx_task_by_pid(PID): Given PID, iterate over all tasks of the target and
return that task_struct variable which PID matches."""
def __init__(self):
super(LxTaskByPidFunc, self).__init__("lx_task_by_pid")
def invoke(self, pid):
task = get_task_by_pid(pid)
if task:
return task.dereference()
else:
raise gdb.GdbError("No task of PID " + str(pid))
LxTaskByPidFunc()
class LxPs(gdb.Command):
"""Dump Linux tasks."""
def __init__(self):
super(LxPs, self).__init__("lx-ps", gdb.COMMAND_DATA)
def invoke(self, arg, from_tty):
for task in task_lists():
gdb.write("{address} {pid} {comm}\n".format(
address=task,
pid=task["pid"],
comm=task["comm"].string()))
LxPs()
thread_info_type = utils.CachedType("struct thread_info")
ia64_task_size = None
def get_thread_info(task):
thread_info_ptr_type = thread_info_type.get_type().pointer()
if utils.is_target_arch("ia64"):
global ia64_task_size
if ia64_task_size is None:
ia64_task_size = gdb.parse_and_eval("sizeof(struct task_struct)")
thread_info_addr = task.address + ia64_task_size
thread_info = thread_info_addr.cast(thread_info_ptr_type)
else:
if task.type.fields()[0].type == thread_info_type.get_type():
return task['thread_info']
thread_info = task['stack'].cast(thread_info_ptr_type)
return thread_info.dereference()
class LxThreadInfoFunc (gdb.Function):
"""Calculate Linux thread_info from task variable.
$lx_thread_info(TASK): Given TASK, return the corresponding thread_info
variable."""
def __init__(self):
super(LxThreadInfoFunc, self).__init__("lx_thread_info")
def invoke(self, task):
return get_thread_info(task)
LxThreadInfoFunc()
class LxThreadInfoByPidFunc (gdb.Function):
"""Calculate Linux thread_info from task variable found by pid
$lx_thread_info_by_pid(PID): Given PID, return the corresponding thread_info
variable."""
def __init__(self):
super(LxThreadInfoByPidFunc, self).__init__("lx_thread_info_by_pid")
def invoke(self, pid):
task = get_task_by_pid(pid)
if task:
return get_thread_info(task.dereference())
else:
raise gdb.GdbError("No task of PID " + str(pid))
LxThreadInfoByPidFunc()