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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
a4a2eb49 TG |
2 | #include <linux/init_task.h> |
3 | #include <linux/export.h> | |
4 | #include <linux/mqueue.h> | |
5 | #include <linux/sched.h> | |
cf4aebc2 | 6 | #include <linux/sched/sysctl.h> |
8bd75c77 | 7 | #include <linux/sched/rt.h> |
9164bb4a | 8 | #include <linux/sched/task.h> |
a4a2eb49 TG |
9 | #include <linux/init.h> |
10 | #include <linux/fs.h> | |
11 | #include <linux/mm.h> | |
f0b75216 | 12 | #include <linux/audit.h> |
98fa15f3 | 13 | #include <linux/numa.h> |
d08b9f0c | 14 | #include <linux/scs.h> |
a4a2eb49 | 15 | |
7c0f6ba6 | 16 | #include <linux/uaccess.h> |
a4a2eb49 | 17 | |
3678e2fc DH |
18 | static 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 | }, | |
c3ad2c3b | 26 | .multiprocess = HLIST_HEAD_INIT, |
3678e2fc DH |
27 | .rlim = INIT_RLIMITS, |
28 | .cred_guard_mutex = __MUTEX_INITIALIZER(init_signals.cred_guard_mutex), | |
f7cfd871 | 29 | .exec_update_lock = __RWSEM_INITIALIZER(init_signals.exec_update_lock), |
3678e2fc DH |
30 | #ifdef CONFIG_POSIX_TIMERS |
31 | .posix_timers = LIST_HEAD_INIT(init_signals.posix_timers), | |
32 | .cputimer = { | |
33 | .cputime_atomic = INIT_CPUTIME_ATOMIC, | |
3678e2fc DH |
34 | }, |
35 | #endif | |
36 | INIT_CPU_TIMERS(init_signals) | |
2c470475 EB |
37 | .pids = { |
38 | [PIDTYPE_PID] = &init_struct_pid, | |
6883f81a | 39 | [PIDTYPE_TGID] = &init_struct_pid, |
2c470475 EB |
40 | [PIDTYPE_PGID] = &init_struct_pid, |
41 | [PIDTYPE_SID] = &init_struct_pid, | |
42 | }, | |
3678e2fc DH |
43 | INIT_PREV_CPUTIME(init_signals) |
44 | }; | |
45 | ||
46 | static struct sighand_struct init_sighand = { | |
60d4de3f | 47 | .count = REFCOUNT_INIT(1), |
3678e2fc DH |
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 | }; | |
a4a2eb49 | 52 | |
d08b9f0c | 53 | #ifdef CONFIG_SHADOW_CALL_STACK |
0eb5085c | 54 | unsigned long init_shadow_call_stack[SCS_SIZE / sizeof(long)] = { |
d08b9f0c ST |
55 | [(SCS_SIZE / sizeof(long)) - 1] = SCS_END_MAGIC |
56 | }; | |
57 | #endif | |
58 | ||
d11ed3ab DH |
59 | /* |
60 | * Set up the first task table, touch at your own risk!. Base=0, | |
61 | * limit=0x1fffff (=2MB) | |
62 | */ | |
0eb5085c | 63 | struct task_struct init_task __aligned(L1_CACHE_BYTES) = { |
4e7e3adb DH |
64 | #ifdef CONFIG_THREAD_INFO_IN_TASK |
65 | .thread_info = INIT_THREAD_INFO(init_task), | |
f0b89d39 | 66 | .stack_refcount = REFCOUNT_INIT(1), |
4e7e3adb | 67 | #endif |
2f064a59 | 68 | .__state = 0, |
d11ed3ab | 69 | .stack = init_stack, |
ec1d2819 | 70 | .usage = REFCOUNT_INIT(2), |
d11ed3ab | 71 | .flags = PF_KTHREAD, |
4e7e3adb DH |
72 | .prio = MAX_PRIO - 20, |
73 | .static_prio = MAX_PRIO - 20, | |
74 | .normal_prio = MAX_PRIO - 20, | |
d11ed3ab | 75 | .policy = SCHED_NORMAL, |
3bd37062 | 76 | .cpus_ptr = &init_task.cpus_mask, |
b90ca8ba | 77 | .user_cpus_ptr = NULL, |
3bd37062 | 78 | .cpus_mask = CPU_MASK_ALL, |
d11ed3ab DH |
79 | .nr_cpus_allowed= NR_CPUS, |
80 | .mm = NULL, | |
81 | .active_mm = &init_mm, | |
2b69987b | 82 | .faults_disabled_mapping = NULL, |
4e7e3adb | 83 | .restart_block = { |
d11ed3ab DH |
84 | .fn = do_no_restart_syscall, |
85 | }, | |
86 | .se = { | |
87 | .group_node = LIST_HEAD_INIT(init_task.se.group_node), | |
88 | }, | |
89 | .rt = { | |
90 | .run_list = LIST_HEAD_INIT(init_task.rt.run_list), | |
91 | .time_slice = RR_TIMESLICE, | |
92 | }, | |
93 | .tasks = LIST_HEAD_INIT(init_task.tasks), | |
4e7e3adb DH |
94 | #ifdef CONFIG_SMP |
95 | .pushable_tasks = PLIST_NODE_INIT(init_task.pushable_tasks, MAX_PRIO), | |
96 | #endif | |
97 | #ifdef CONFIG_CGROUP_SCHED | |
98 | .sched_task_group = &root_task_group, | |
99 | #endif | |
d11ed3ab DH |
100 | .ptraced = LIST_HEAD_INIT(init_task.ptraced), |
101 | .ptrace_entry = LIST_HEAD_INIT(init_task.ptrace_entry), | |
102 | .real_parent = &init_task, | |
103 | .parent = &init_task, | |
104 | .children = LIST_HEAD_INIT(init_task.children), | |
105 | .sibling = LIST_HEAD_INIT(init_task.sibling), | |
106 | .group_leader = &init_task, | |
107 | RCU_POINTER_INITIALIZER(real_cred, &init_cred), | |
108 | RCU_POINTER_INITIALIZER(cred, &init_cred), | |
109 | .comm = INIT_TASK_COMM, | |
110 | .thread = INIT_THREAD, | |
111 | .fs = &init_fs, | |
112 | .files = &init_files, | |
0f212204 JA |
113 | #ifdef CONFIG_IO_URING |
114 | .io_uring = NULL, | |
115 | #endif | |
d11ed3ab DH |
116 | .signal = &init_signals, |
117 | .sighand = &init_sighand, | |
118 | .nsproxy = &init_nsproxy, | |
119 | .pending = { | |
120 | .list = LIST_HEAD_INIT(init_task.pending.list), | |
121 | .signal = {{0}} | |
122 | }, | |
123 | .blocked = {{0}}, | |
124 | .alloc_lock = __SPIN_LOCK_UNLOCKED(init_task.alloc_lock), | |
125 | .journal_info = NULL, | |
126 | INIT_CPU_TIMERS(init_task) | |
127 | .pi_lock = __RAW_SPIN_LOCK_UNLOCKED(init_task.pi_lock), | |
128 | .timer_slack_ns = 50000, /* 50 usec default slack */ | |
2c470475 | 129 | .thread_pid = &init_struct_pid, |
d11ed3ab | 130 | .thread_node = LIST_HEAD_INIT(init_signals.thread_head), |
4b7d248b | 131 | #ifdef CONFIG_AUDIT |
4e7e3adb | 132 | .loginuid = INVALID_UID, |
f0b75216 | 133 | .sessionid = AUDIT_SID_UNSET, |
4e7e3adb DH |
134 | #endif |
135 | #ifdef CONFIG_PERF_EVENTS | |
136 | .perf_event_mutex = __MUTEX_INITIALIZER(init_task.perf_event_mutex), | |
137 | .perf_event_list = LIST_HEAD_INIT(init_task.perf_event_list), | |
138 | #endif | |
139 | #ifdef CONFIG_PREEMPT_RCU | |
140 | .rcu_read_lock_nesting = 0, | |
141 | .rcu_read_unlock_special.s = 0, | |
142 | .rcu_node_entry = LIST_HEAD_INIT(init_task.rcu_node_entry), | |
143 | .rcu_blocked_node = NULL, | |
144 | #endif | |
145 | #ifdef CONFIG_TASKS_RCU | |
146 | .rcu_tasks_holdout = false, | |
147 | .rcu_tasks_holdout_list = LIST_HEAD_INIT(init_task.rcu_tasks_holdout_list), | |
148 | .rcu_tasks_idle_cpu = -1, | |
149 | #endif | |
d5f177d3 PM |
150 | #ifdef CONFIG_TASKS_TRACE_RCU |
151 | .trc_reader_nesting = 0, | |
276c4104 | 152 | .trc_reader_special.s = 0, |
d5f177d3 | 153 | .trc_holdout_list = LIST_HEAD_INIT(init_task.trc_holdout_list), |
434c9eef | 154 | .trc_blkd_node = LIST_HEAD_INIT(init_task.trc_blkd_node), |
d5f177d3 | 155 | #endif |
4e7e3adb | 156 | #ifdef CONFIG_CPUSETS |
b7505861 AD |
157 | .mems_allowed_seq = SEQCNT_SPINLOCK_ZERO(init_task.mems_allowed_seq, |
158 | &init_task.alloc_lock), | |
4e7e3adb DH |
159 | #endif |
160 | #ifdef CONFIG_RT_MUTEXES | |
161 | .pi_waiters = RB_ROOT_CACHED, | |
162 | .pi_top_task = NULL, | |
163 | #endif | |
d11ed3ab | 164 | INIT_PREV_CPUTIME(init_task) |
4e7e3adb DH |
165 | #ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN |
166 | .vtime.seqcount = SEQCNT_ZERO(init_task.vtime_seqcount), | |
167 | .vtime.starttime = 0, | |
168 | .vtime.state = VTIME_SYS, | |
169 | #endif | |
170 | #ifdef CONFIG_NUMA_BALANCING | |
98fa15f3 | 171 | .numa_preferred_nid = NUMA_NO_NODE, |
4e7e3adb DH |
172 | .numa_group = NULL, |
173 | .numa_faults = NULL, | |
174 | #endif | |
d73b4936 | 175 | #if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS) |
4e7e3adb DH |
176 | .kasan_depth = 1, |
177 | #endif | |
dfd402a4 ME |
178 | #ifdef CONFIG_KCSAN |
179 | .kcsan_ctx = { | |
757a4cef | 180 | .scoped_accesses = {LIST_POISON1, NULL}, |
dfd402a4 ME |
181 | }, |
182 | #endif | |
4e7e3adb DH |
183 | #ifdef CONFIG_TRACE_IRQFLAGS |
184 | .softirqs_enabled = 1, | |
185 | #endif | |
186 | #ifdef CONFIG_LOCKDEP | |
e196e479 | 187 | .lockdep_depth = 0, /* no locks held yet */ |
f6ec8829 | 188 | .curr_chain_key = INITIAL_CHAIN_KEY, |
4e7e3adb DH |
189 | .lockdep_recursion = 0, |
190 | #endif | |
191 | #ifdef CONFIG_FUNCTION_GRAPH_TRACER | |
7e0a9220 SRV |
192 | .ret_stack = NULL, |
193 | .tracing_graph_pause = ATOMIC_INIT(0), | |
4e7e3adb | 194 | #endif |
c1a280b6 | 195 | #if defined(CONFIG_TRACING) && defined(CONFIG_PREEMPTION) |
4e7e3adb DH |
196 | .trace_recursion = 0, |
197 | #endif | |
198 | #ifdef CONFIG_LIVEPATCH | |
199 | .patch_state = KLP_UNDEFINED, | |
200 | #endif | |
201 | #ifdef CONFIG_SECURITY | |
202 | .security = NULL, | |
203 | #endif | |
64bdc024 | 204 | #ifdef CONFIG_SECCOMP_FILTER |
c818c03b KC |
205 | .seccomp = { .filter_count = ATOMIC_INIT(0) }, |
206 | #endif | |
d11ed3ab | 207 | }; |
a4a2eb49 TG |
208 | EXPORT_SYMBOL(init_task); |
209 | ||
210 | /* | |
211 | * Initial thread structure. Alignment of this is handled by a special | |
212 | * linker map entry. | |
213 | */ | |
c65eacbe | 214 | #ifndef CONFIG_THREAD_INFO_IN_TASK |
0500871f | 215 | struct thread_info init_thread_info __init_thread_info = INIT_THREAD_INFO(init_task); |
c65eacbe | 216 | #endif |