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1#include <linux/init_task.h>
2#include <linux/export.h>
3#include <linux/mqueue.h>
4#include <linux/sched.h>
5#include <linux/sched/sysctl.h>
6#include <linux/sched/rt.h>
7#include <linux/init.h>
8#include <linux/fs.h>
9#include <linux/mm.h>
10
11#include <asm/pgtable.h>
12#include <asm/uaccess.h>
13
14static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
15static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
16
17/* Initial task structure */
18struct task_struct init_task = INIT_TASK(init_task);
19EXPORT_SYMBOL(init_task);
20
21/*
22 * Initial thread structure. Alignment of this is handled by a special
23 * linker map entry.
24 */
25union thread_union init_thread_union __init_task_data =
26 { INIT_THREAD_INFO(init_task) };
1// SPDX-License-Identifier: GPL-2.0
2#include <linux/init_task.h>
3#include <linux/export.h>
4#include <linux/mqueue.h>
5#include <linux/sched.h>
6#include <linux/sched/sysctl.h>
7#include <linux/sched/rt.h>
8#include <linux/sched/task.h>
9#include <linux/init.h>
10#include <linux/fs.h>
11#include <linux/mm.h>
12#include <linux/audit.h>
13#include <linux/numa.h>
14#include <linux/scs.h>
15
16#include <linux/uaccess.h>
17
18static struct signal_struct init_signals = {
19 .nr_threads = 1,
20 .thread_head = LIST_HEAD_INIT(init_task.thread_node),
21 .wait_chldexit = __WAIT_QUEUE_HEAD_INITIALIZER(init_signals.wait_chldexit),
22 .shared_pending = {
23 .list = LIST_HEAD_INIT(init_signals.shared_pending.list),
24 .signal = {{0}}
25 },
26 .multiprocess = HLIST_HEAD_INIT,
27 .rlim = INIT_RLIMITS,
28 .cred_guard_mutex = __MUTEX_INITIALIZER(init_signals.cred_guard_mutex),
29 .exec_update_lock = __RWSEM_INITIALIZER(init_signals.exec_update_lock),
30#ifdef CONFIG_POSIX_TIMERS
31 .posix_timers = LIST_HEAD_INIT(init_signals.posix_timers),
32 .cputimer = {
33 .cputime_atomic = INIT_CPUTIME_ATOMIC,
34 },
35#endif
36 INIT_CPU_TIMERS(init_signals)
37 .pids = {
38 [PIDTYPE_PID] = &init_struct_pid,
39 [PIDTYPE_TGID] = &init_struct_pid,
40 [PIDTYPE_PGID] = &init_struct_pid,
41 [PIDTYPE_SID] = &init_struct_pid,
42 },
43 INIT_PREV_CPUTIME(init_signals)
44};
45
46static struct sighand_struct init_sighand = {
47 .count = REFCOUNT_INIT(1),
48 .action = { { { .sa_handler = SIG_DFL, } }, },
49 .siglock = __SPIN_LOCK_UNLOCKED(init_sighand.siglock),
50 .signalfd_wqh = __WAIT_QUEUE_HEAD_INITIALIZER(init_sighand.signalfd_wqh),
51};
52
53#ifdef CONFIG_SHADOW_CALL_STACK
54unsigned long init_shadow_call_stack[SCS_SIZE / sizeof(long)]
55 __init_task_data = {
56 [(SCS_SIZE / sizeof(long)) - 1] = SCS_END_MAGIC
57};
58#endif
59
60/*
61 * Set up the first task table, touch at your own risk!. Base=0,
62 * limit=0x1fffff (=2MB)
63 */
64struct task_struct init_task
65#ifdef CONFIG_ARCH_TASK_STRUCT_ON_STACK
66 __init_task_data
67#endif
68 __aligned(L1_CACHE_BYTES)
69= {
70#ifdef CONFIG_THREAD_INFO_IN_TASK
71 .thread_info = INIT_THREAD_INFO(init_task),
72 .stack_refcount = REFCOUNT_INIT(1),
73#endif
74 .__state = 0,
75 .stack = init_stack,
76 .usage = REFCOUNT_INIT(2),
77 .flags = PF_KTHREAD,
78 .prio = MAX_PRIO - 20,
79 .static_prio = MAX_PRIO - 20,
80 .normal_prio = MAX_PRIO - 20,
81 .policy = SCHED_NORMAL,
82 .cpus_ptr = &init_task.cpus_mask,
83 .cpus_mask = CPU_MASK_ALL,
84 .nr_cpus_allowed= NR_CPUS,
85 .mm = NULL,
86 .active_mm = &init_mm,
87 .restart_block = {
88 .fn = do_no_restart_syscall,
89 },
90 .se = {
91 .group_node = LIST_HEAD_INIT(init_task.se.group_node),
92 },
93 .rt = {
94 .run_list = LIST_HEAD_INIT(init_task.rt.run_list),
95 .time_slice = RR_TIMESLICE,
96 },
97 .tasks = LIST_HEAD_INIT(init_task.tasks),
98#ifdef CONFIG_SMP
99 .pushable_tasks = PLIST_NODE_INIT(init_task.pushable_tasks, MAX_PRIO),
100#endif
101#ifdef CONFIG_CGROUP_SCHED
102 .sched_task_group = &root_task_group,
103#endif
104 .ptraced = LIST_HEAD_INIT(init_task.ptraced),
105 .ptrace_entry = LIST_HEAD_INIT(init_task.ptrace_entry),
106 .real_parent = &init_task,
107 .parent = &init_task,
108 .children = LIST_HEAD_INIT(init_task.children),
109 .sibling = LIST_HEAD_INIT(init_task.sibling),
110 .group_leader = &init_task,
111 RCU_POINTER_INITIALIZER(real_cred, &init_cred),
112 RCU_POINTER_INITIALIZER(cred, &init_cred),
113 .comm = INIT_TASK_COMM,
114 .thread = INIT_THREAD,
115 .fs = &init_fs,
116 .files = &init_files,
117#ifdef CONFIG_IO_URING
118 .io_uring = NULL,
119#endif
120 .signal = &init_signals,
121 .sighand = &init_sighand,
122 .nsproxy = &init_nsproxy,
123 .pending = {
124 .list = LIST_HEAD_INIT(init_task.pending.list),
125 .signal = {{0}}
126 },
127 .blocked = {{0}},
128 .alloc_lock = __SPIN_LOCK_UNLOCKED(init_task.alloc_lock),
129 .journal_info = NULL,
130 INIT_CPU_TIMERS(init_task)
131 .pi_lock = __RAW_SPIN_LOCK_UNLOCKED(init_task.pi_lock),
132 .timer_slack_ns = 50000, /* 50 usec default slack */
133 .thread_pid = &init_struct_pid,
134 .thread_group = LIST_HEAD_INIT(init_task.thread_group),
135 .thread_node = LIST_HEAD_INIT(init_signals.thread_head),
136#ifdef CONFIG_AUDIT
137 .loginuid = INVALID_UID,
138 .sessionid = AUDIT_SID_UNSET,
139#endif
140#ifdef CONFIG_PERF_EVENTS
141 .perf_event_mutex = __MUTEX_INITIALIZER(init_task.perf_event_mutex),
142 .perf_event_list = LIST_HEAD_INIT(init_task.perf_event_list),
143#endif
144#ifdef CONFIG_PREEMPT_RCU
145 .rcu_read_lock_nesting = 0,
146 .rcu_read_unlock_special.s = 0,
147 .rcu_node_entry = LIST_HEAD_INIT(init_task.rcu_node_entry),
148 .rcu_blocked_node = NULL,
149#endif
150#ifdef CONFIG_TASKS_RCU
151 .rcu_tasks_holdout = false,
152 .rcu_tasks_holdout_list = LIST_HEAD_INIT(init_task.rcu_tasks_holdout_list),
153 .rcu_tasks_idle_cpu = -1,
154#endif
155#ifdef CONFIG_TASKS_TRACE_RCU
156 .trc_reader_nesting = 0,
157 .trc_reader_special.s = 0,
158 .trc_holdout_list = LIST_HEAD_INIT(init_task.trc_holdout_list),
159#endif
160#ifdef CONFIG_CPUSETS
161 .mems_allowed_seq = SEQCNT_SPINLOCK_ZERO(init_task.mems_allowed_seq,
162 &init_task.alloc_lock),
163#endif
164#ifdef CONFIG_RT_MUTEXES
165 .pi_waiters = RB_ROOT_CACHED,
166 .pi_top_task = NULL,
167#endif
168 INIT_PREV_CPUTIME(init_task)
169#ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN
170 .vtime.seqcount = SEQCNT_ZERO(init_task.vtime_seqcount),
171 .vtime.starttime = 0,
172 .vtime.state = VTIME_SYS,
173#endif
174#ifdef CONFIG_NUMA_BALANCING
175 .numa_preferred_nid = NUMA_NO_NODE,
176 .numa_group = NULL,
177 .numa_faults = NULL,
178#endif
179#if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS)
180 .kasan_depth = 1,
181#endif
182#ifdef CONFIG_KCSAN
183 .kcsan_ctx = {
184 .disable_count = 0,
185 .atomic_next = 0,
186 .atomic_nest_count = 0,
187 .in_flat_atomic = false,
188 .access_mask = 0,
189 .scoped_accesses = {LIST_POISON1, NULL},
190 },
191#endif
192#ifdef CONFIG_TRACE_IRQFLAGS
193 .softirqs_enabled = 1,
194#endif
195#ifdef CONFIG_LOCKDEP
196 .lockdep_depth = 0, /* no locks held yet */
197 .curr_chain_key = INITIAL_CHAIN_KEY,
198 .lockdep_recursion = 0,
199#endif
200#ifdef CONFIG_FUNCTION_GRAPH_TRACER
201 .ret_stack = NULL,
202 .tracing_graph_pause = ATOMIC_INIT(0),
203#endif
204#if defined(CONFIG_TRACING) && defined(CONFIG_PREEMPTION)
205 .trace_recursion = 0,
206#endif
207#ifdef CONFIG_LIVEPATCH
208 .patch_state = KLP_UNDEFINED,
209#endif
210#ifdef CONFIG_SECURITY
211 .security = NULL,
212#endif
213#ifdef CONFIG_SECCOMP_FILTER
214 .seccomp = { .filter_count = ATOMIC_INIT(0) },
215#endif
216};
217EXPORT_SYMBOL(init_task);
218
219/*
220 * Initial thread structure. Alignment of this is handled by a special
221 * linker map entry.
222 */
223#ifndef CONFIG_THREAD_INFO_IN_TASK
224struct thread_info init_thread_info __init_thread_info = INIT_THREAD_INFO(init_task);
225#endif