// SPDX-License-Identifier: GPL-2.0#include <linux/init_task.h>#include <linux/export.h>#include <linux/mqueue.h>#include <linux/sched.h>#include <linux/sched/sysctl.h>#include <linux/sched/rt.h>#include <linux/sched/task.h>#include <linux/init.h>#include <linux/fs.h>#include <linux/mm.h>#include <linux/audit.h>#include <linux/numa.h>#include <linux/scs.h> #include <linux/uaccess.h> static struct signal_struct init_signals = {	.nr_threads	= 1,	.thread_head	= LIST_HEAD_INIT(init_task.thread_node),	.wait_chldexit	= __WAIT_QUEUE_HEAD_INITIALIZER(init_signals.wait_chldexit),	.shared_pending	= {		.list = LIST_HEAD_INIT(init_signals.shared_pending.list),		.signal =  {{0}}	},	.multiprocess	= HLIST_HEAD_INIT,	.rlim		= INIT_RLIMITS,	.cred_guard_mutex = __MUTEX_INITIALIZER(init_signals.cred_guard_mutex),	.exec_update_lock = __RWSEM_INITIALIZER(init_signals.exec_update_lock),#ifdef CONFIG_POSIX_TIMERS	.posix_timers = LIST_HEAD_INIT(init_signals.posix_timers),	.cputimer	= {		.cputime_atomic	= INIT_CPUTIME_ATOMIC,	},#endif	INIT_CPU_TIMERS(init_signals)	.pids = {		[PIDTYPE_PID]	= &init_struct_pid,		[PIDTYPE_TGID]	= &init_struct_pid,		[PIDTYPE_PGID]	= &init_struct_pid,		[PIDTYPE_SID]	= &init_struct_pid,	},	INIT_PREV_CPUTIME(init_signals)}; static struct sighand_struct init_sighand = {	.count		= REFCOUNT_INIT(1),	.action		= { { { .sa_handler = SIG_DFL, } }, },	.siglock	= __SPIN_LOCK_UNLOCKED(init_sighand.siglock),	.signalfd_wqh	= __WAIT_QUEUE_HEAD_INITIALIZER(init_sighand.signalfd_wqh),}; #ifdef CONFIG_SHADOW_CALL_STACKunsigned long init_shadow_call_stack[SCS_SIZE / sizeof(long)]		__init_task_data = {	[(SCS_SIZE / sizeof(long)) - 1] = SCS_END_MAGIC};#endif /* * Set up the first task table, touch at your own risk!. Base=0, * limit=0x1fffff (=2MB) */struct task_struct init_task#ifdef CONFIG_ARCH_TASK_STRUCT_ON_STACK	__init_task_data#endif	__aligned(L1_CACHE_BYTES)= {#ifdef CONFIG_THREAD_INFO_IN_TASK	.thread_info	= INIT_THREAD_INFO(init_task),	.stack_refcount	= REFCOUNT_INIT(1),#endif	.__state	= 0,	.stack		= init_stack,	.usage		= REFCOUNT_INIT(2),	.flags		= PF_KTHREAD,	.prio		= MAX_PRIO - 20,	.static_prio	= MAX_PRIO - 20,	.normal_prio	= MAX_PRIO - 20,	.policy		= SCHED_NORMAL,	.cpus_ptr	= &init_task.cpus_mask,	.user_cpus_ptr	= NULL,	.cpus_mask	= CPU_MASK_ALL,	.nr_cpus_allowed= NR_CPUS,	.mm		= NULL,	.active_mm	= &init_mm,	.faults_disabled_mapping = NULL,	.restart_block	= {		.fn = do_no_restart_syscall,	},	.se		= {		.group_node 	= LIST_HEAD_INIT(init_task.se.group_node),	},	.rt		= {		.run_list	= LIST_HEAD_INIT(init_task.rt.run_list),		.time_slice	= RR_TIMESLICE,	},	.tasks		= LIST_HEAD_INIT(init_task.tasks),#ifdef CONFIG_SMP	.pushable_tasks	= PLIST_NODE_INIT(init_task.pushable_tasks, MAX_PRIO),#endif#ifdef CONFIG_CGROUP_SCHED	.sched_task_group = &root_task_group,#endif	.ptraced	= LIST_HEAD_INIT(init_task.ptraced),	.ptrace_entry	= LIST_HEAD_INIT(init_task.ptrace_entry),	.real_parent	= &init_task,	.parent		= &init_task,	.children	= LIST_HEAD_INIT(init_task.children),	.sibling	= LIST_HEAD_INIT(init_task.sibling),	.group_leader	= &init_task,	RCU_POINTER_INITIALIZER(real_cred, &init_cred),	RCU_POINTER_INITIALIZER(cred, &init_cred),	.comm		= INIT_TASK_COMM,	.thread		= INIT_THREAD,	.fs		= &init_fs,	.files		= &init_files,#ifdef CONFIG_IO_URING	.io_uring	= NULL,#endif	.signal		= &init_signals,	.sighand	= &init_sighand,	.nsproxy	= &init_nsproxy,	.pending	= {		.list = LIST_HEAD_INIT(init_task.pending.list),		.signal = {{0}}	},	.blocked	= {{0}},	.alloc_lock	= __SPIN_LOCK_UNLOCKED(init_task.alloc_lock),	.journal_info	= NULL,	INIT_CPU_TIMERS(init_task)	.pi_lock	= __RAW_SPIN_LOCK_UNLOCKED(init_task.pi_lock),	.timer_slack_ns = 50000, /* 50 usec default slack */	.thread_pid	= &init_struct_pid,	.thread_node	= LIST_HEAD_INIT(init_signals.thread_head),#ifdef CONFIG_AUDIT	.loginuid	= INVALID_UID,	.sessionid	= AUDIT_SID_UNSET,#endif#ifdef CONFIG_PERF_EVENTS	.perf_event_mutex = __MUTEX_INITIALIZER(init_task.perf_event_mutex),	.perf_event_list = LIST_HEAD_INIT(init_task.perf_event_list),#endif#ifdef CONFIG_PREEMPT_RCU	.rcu_read_lock_nesting = 0,	.rcu_read_unlock_special.s = 0,	.rcu_node_entry = LIST_HEAD_INIT(init_task.rcu_node_entry),	.rcu_blocked_node = NULL,#endif#ifdef CONFIG_TASKS_RCU	.rcu_tasks_holdout = false,	.rcu_tasks_holdout_list = LIST_HEAD_INIT(init_task.rcu_tasks_holdout_list),	.rcu_tasks_idle_cpu = -1,#endif#ifdef CONFIG_TASKS_TRACE_RCU	.trc_reader_nesting = 0,	.trc_reader_special.s = 0,	.trc_holdout_list = LIST_HEAD_INIT(init_task.trc_holdout_list),	.trc_blkd_node = LIST_HEAD_INIT(init_task.trc_blkd_node),#endif#ifdef CONFIG_CPUSETS	.mems_allowed_seq = SEQCNT_SPINLOCK_ZERO(init_task.mems_allowed_seq,						 &init_task.alloc_lock),#endif#ifdef CONFIG_RT_MUTEXES	.pi_waiters	= RB_ROOT_CACHED,	.pi_top_task	= NULL,#endif	INIT_PREV_CPUTIME(init_task)#ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN	.vtime.seqcount	= SEQCNT_ZERO(init_task.vtime_seqcount),	.vtime.starttime = 0,	.vtime.state	= VTIME_SYS,#endif#ifdef CONFIG_NUMA_BALANCING	.numa_preferred_nid = NUMA_NO_NODE,	.numa_group	= NULL,	.numa_faults	= NULL,#endif#if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)	.kasan_depth	= 1,#endif#ifdef CONFIG_KCSAN	.kcsan_ctx = {		.scoped_accesses	= {LIST_POISON1, NULL},	},#endif#ifdef CONFIG_TRACE_IRQFLAGS	.softirqs_enabled = 1,#endif#ifdef CONFIG_LOCKDEP	.lockdep_depth = 0, /* no locks held yet */	.curr_chain_key = INITIAL_CHAIN_KEY,	.lockdep_recursion = 0,#endif#ifdef CONFIG_FUNCTION_GRAPH_TRACER	.ret_stack		= NULL,	.tracing_graph_pause	= ATOMIC_INIT(0),#endif#if defined(CONFIG_TRACING) && defined(CONFIG_PREEMPTION)	.trace_recursion = 0,#endif#ifdef CONFIG_LIVEPATCH	.patch_state	= KLP_UNDEFINED,#endif#ifdef CONFIG_SECURITY	.security	= NULL,#endif#ifdef CONFIG_SECCOMP_FILTER	.seccomp	= { .filter_count = ATOMIC_INIT(0) },#endif};EXPORT_SYMBOL(init_task); /* * Initial thread structure. Alignment of this is handled by a special * linker map entry. */#ifndef CONFIG_THREAD_INFO_IN_TASKstruct thread_info init_thread_info __init_thread_info = INIT_THREAD_INFO(init_task);#endif