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1da177e4 LT |
1 | #ifndef _LINUX__INIT_TASK_H |
2 | #define _LINUX__INIT_TASK_H | |
3 | ||
ab2af1f5 | 4 | #include <linux/rcupdate.h> |
de30a2b3 | 5 | #include <linux/irqflags.h> |
4865ecf1 | 6 | #include <linux/utsname.h> |
fbb9ce95 | 7 | #include <linux/lockdep.h> |
5ac9f622 | 8 | #include <linux/ftrace.h> |
73ea4130 | 9 | #include <linux/ipc.h> |
9a575a92 | 10 | #include <linux/pid_namespace.h> |
acce292c | 11 | #include <linux/user_namespace.h> |
3898b1b4 | 12 | #include <linux/securebits.h> |
772698f6 | 13 | #include <net/net_namespace.h> |
1da177e4 | 14 | |
806c09a7 DF |
15 | #ifdef CONFIG_SMP |
16 | # define INIT_PUSHABLE_TASKS(tsk) \ | |
17 | .pushable_tasks = PLIST_NODE_INIT(tsk.pushable_tasks, MAX_PRIO), | |
18 | #else | |
19 | # define INIT_PUSHABLE_TASKS(tsk) | |
20 | #endif | |
21 | ||
f52111b1 | 22 | extern struct files_struct init_files; |
18d8fda7 | 23 | extern struct fs_struct init_fs; |
1da177e4 | 24 | |
1ec320af | 25 | #define INIT_SIGNALS(sig) { \ |
b3ac022c | 26 | .nr_threads = 1, \ |
1da177e4 | 27 | .wait_chldexit = __WAIT_QUEUE_HEAD_INITIALIZER(sig.wait_chldexit),\ |
1ec320af | 28 | .shared_pending = { \ |
1da177e4 | 29 | .list = LIST_HEAD_INIT(sig.shared_pending.list), \ |
1ec320af | 30 | .signal = {{0}}}, \ |
1da177e4 LT |
31 | .posix_timers = LIST_HEAD_INIT(sig.posix_timers), \ |
32 | .cpu_timers = INIT_CPU_TIMERS(sig.cpu_timers), \ | |
33 | .rlim = INIT_RLIMITS, \ | |
4cd4c1b4 PZ |
34 | .cputimer = { \ |
35 | .cputime = INIT_CPUTIME, \ | |
36 | .running = 0, \ | |
37 | .lock = __SPIN_LOCK_UNLOCKED(sig.cputimer.lock), \ | |
38 | }, \ | |
9b1bf12d KM |
39 | .cred_guard_mutex = \ |
40 | __MUTEX_INITIALIZER(sig.cred_guard_mutex), \ | |
1da177e4 LT |
41 | } |
42 | ||
ab516013 | 43 | extern struct nsproxy init_nsproxy; |
ab516013 | 44 | |
1da177e4 LT |
45 | #define INIT_SIGHAND(sighand) { \ |
46 | .count = ATOMIC_INIT(1), \ | |
0a14a130 | 47 | .action = { { { .sa_handler = SIG_DFL, } }, }, \ |
e4d91918 | 48 | .siglock = __SPIN_LOCK_UNLOCKED(sighand.siglock), \ |
b8fceee1 | 49 | .signalfd_wqh = __WAIT_QUEUE_HEAD_INITIALIZER(sighand.signalfd_wqh), \ |
1da177e4 LT |
50 | } |
51 | ||
52 | extern struct group_info init_groups; | |
53 | ||
820e45db SB |
54 | #define INIT_STRUCT_PID { \ |
55 | .count = ATOMIC_INIT(1), \ | |
820e45db | 56 | .tasks = { \ |
f2001145 ON |
57 | { .first = NULL }, \ |
58 | { .first = NULL }, \ | |
59 | { .first = NULL }, \ | |
820e45db | 60 | }, \ |
4c3f2ead SB |
61 | .level = 0, \ |
62 | .numbers = { { \ | |
63 | .nr = 0, \ | |
64 | .ns = &init_pid_ns, \ | |
65 | .pid_chain = { .next = NULL, .pprev = NULL }, \ | |
66 | }, } \ | |
820e45db SB |
67 | } |
68 | ||
69 | #define INIT_PID_LINK(type) \ | |
70 | { \ | |
71 | .node = { \ | |
72 | .next = NULL, \ | |
f2001145 | 73 | .pprev = NULL, \ |
820e45db SB |
74 | }, \ |
75 | .pid = &init_struct_pid, \ | |
76 | } | |
77 | ||
bfef93a5 AV |
78 | #ifdef CONFIG_AUDITSYSCALL |
79 | #define INIT_IDS \ | |
4746ec5b EP |
80 | .loginuid = -1, \ |
81 | .sessionid = -1, | |
bfef93a5 AV |
82 | #else |
83 | #define INIT_IDS | |
84 | #endif | |
3b7391de | 85 | |
3b7391de SH |
86 | /* |
87 | * Because of the reduced scope of CAP_SETPCAP when filesystem | |
88 | * capabilities are in effect, it is safe to allow CAP_SETPCAP to | |
89 | * be available in the default configuration. | |
90 | */ | |
91 | # define CAP_INIT_BSET CAP_FULL_SET | |
3b7391de | 92 | |
24278d14 PM |
93 | #ifdef CONFIG_RCU_BOOST |
94 | #define INIT_TASK_RCU_BOOST() \ | |
95 | .rcu_boost_mutex = NULL, | |
96 | #else | |
97 | #define INIT_TASK_RCU_BOOST() | |
98 | #endif | |
6b3ef48a | 99 | #ifdef CONFIG_TREE_PREEMPT_RCU |
a57eb940 PM |
100 | #define INIT_TASK_RCU_TREE_PREEMPT() \ |
101 | .rcu_blocked_node = NULL, | |
102 | #else | |
103 | #define INIT_TASK_RCU_TREE_PREEMPT(tsk) | |
104 | #endif | |
105 | #ifdef CONFIG_PREEMPT_RCU | |
f41d911f PM |
106 | #define INIT_TASK_RCU_PREEMPT(tsk) \ |
107 | .rcu_read_lock_nesting = 0, \ | |
108 | .rcu_read_unlock_special = 0, \ | |
a57eb940 | 109 | .rcu_node_entry = LIST_HEAD_INIT(tsk.rcu_node_entry), \ |
24278d14 PM |
110 | INIT_TASK_RCU_TREE_PREEMPT() \ |
111 | INIT_TASK_RCU_BOOST() | |
f41d911f PM |
112 | #else |
113 | #define INIT_TASK_RCU_PREEMPT(tsk) | |
114 | #endif | |
115 | ||
b6dff3ec DH |
116 | extern struct cred init_cred; |
117 | ||
cdd6c482 IM |
118 | #ifdef CONFIG_PERF_EVENTS |
119 | # define INIT_PERF_EVENTS(tsk) \ | |
120 | .perf_event_mutex = \ | |
121 | __MUTEX_INITIALIZER(tsk.perf_event_mutex), \ | |
122 | .perf_event_list = LIST_HEAD_INIT(tsk.perf_event_list), | |
082ff5a2 | 123 | #else |
cdd6c482 | 124 | # define INIT_PERF_EVENTS(tsk) |
082ff5a2 PZ |
125 | #endif |
126 | ||
1da177e4 LT |
127 | /* |
128 | * INIT_TASK is used to set up the first task table, touch at | |
129 | * your own risk!. Base=0, limit=0x1fffff (=2MB) | |
130 | */ | |
131 | #define INIT_TASK(tsk) \ | |
132 | { \ | |
133 | .state = 0, \ | |
f7e4217b | 134 | .stack = &init_thread_info, \ |
1da177e4 | 135 | .usage = ATOMIC_INIT(2), \ |
7b34e428 | 136 | .flags = PF_KTHREAD, \ |
1da177e4 LT |
137 | .lock_depth = -1, \ |
138 | .prio = MAX_PRIO-20, \ | |
139 | .static_prio = MAX_PRIO-20, \ | |
b29739f9 | 140 | .normal_prio = MAX_PRIO-20, \ |
1da177e4 LT |
141 | .policy = SCHED_NORMAL, \ |
142 | .cpus_allowed = CPU_MASK_ALL, \ | |
143 | .mm = NULL, \ | |
144 | .active_mm = &init_mm, \ | |
4a55bd5e PZ |
145 | .se = { \ |
146 | .group_node = LIST_HEAD_INIT(tsk.se.group_node), \ | |
147 | }, \ | |
fa717060 PZ |
148 | .rt = { \ |
149 | .run_list = LIST_HEAD_INIT(tsk.rt.run_list), \ | |
6f505b16 PZ |
150 | .time_slice = HZ, \ |
151 | .nr_cpus_allowed = NR_CPUS, \ | |
152 | }, \ | |
1da177e4 | 153 | .tasks = LIST_HEAD_INIT(tsk.tasks), \ |
806c09a7 | 154 | INIT_PUSHABLE_TASKS(tsk) \ |
f470021a RM |
155 | .ptraced = LIST_HEAD_INIT(tsk.ptraced), \ |
156 | .ptrace_entry = LIST_HEAD_INIT(tsk.ptrace_entry), \ | |
1da177e4 LT |
157 | .real_parent = &tsk, \ |
158 | .parent = &tsk, \ | |
159 | .children = LIST_HEAD_INIT(tsk.children), \ | |
160 | .sibling = LIST_HEAD_INIT(tsk.sibling), \ | |
161 | .group_leader = &tsk, \ | |
4d2deb40 AB |
162 | RCU_INIT_POINTER(.real_cred, &init_cred), \ |
163 | RCU_INIT_POINTER(.cred, &init_cred), \ | |
1da177e4 LT |
164 | .comm = "swapper", \ |
165 | .thread = INIT_THREAD, \ | |
166 | .fs = &init_fs, \ | |
167 | .files = &init_files, \ | |
168 | .signal = &init_signals, \ | |
169 | .sighand = &init_sighand, \ | |
ab516013 | 170 | .nsproxy = &init_nsproxy, \ |
1da177e4 LT |
171 | .pending = { \ |
172 | .list = LIST_HEAD_INIT(tsk.pending.list), \ | |
173 | .signal = {{0}}}, \ | |
174 | .blocked = {{0}}, \ | |
e4d91918 | 175 | .alloc_lock = __SPIN_LOCK_UNLOCKED(tsk.alloc_lock), \ |
b6e3224f | 176 | .journal_info = NULL, \ |
1da177e4 | 177 | .cpu_timers = INIT_CPU_TIMERS(tsk.cpu_timers), \ |
22e2c507 | 178 | .fs_excl = ATOMIC_INIT(0), \ |
1d615482 | 179 | .pi_lock = __RAW_SPIN_LOCK_UNLOCKED(tsk.pi_lock), \ |
6976675d | 180 | .timer_slack_ns = 50000, /* 50 usec default slack */ \ |
820e45db SB |
181 | .pids = { \ |
182 | [PIDTYPE_PID] = INIT_PID_LINK(PIDTYPE_PID), \ | |
183 | [PIDTYPE_PGID] = INIT_PID_LINK(PIDTYPE_PGID), \ | |
184 | [PIDTYPE_SID] = INIT_PID_LINK(PIDTYPE_SID), \ | |
185 | }, \ | |
fa2755e2 | 186 | .thread_group = LIST_HEAD_INIT(tsk.thread_group), \ |
3e26c149 | 187 | .dirties = INIT_PROP_LOCAL_SINGLE(dirties), \ |
bfef93a5 | 188 | INIT_IDS \ |
cdd6c482 | 189 | INIT_PERF_EVENTS(tsk) \ |
de30a2b3 | 190 | INIT_TRACE_IRQFLAGS \ |
fbb9ce95 | 191 | INIT_LOCKDEP \ |
5ac9f622 | 192 | INIT_FTRACE_GRAPH \ |
261842b7 | 193 | INIT_TRACE_RECURSION \ |
f41d911f | 194 | INIT_TASK_RCU_PREEMPT(tsk) \ |
1da177e4 LT |
195 | } |
196 | ||
197 | ||
198 | #define INIT_CPU_TIMERS(cpu_timers) \ | |
199 | { \ | |
200 | LIST_HEAD_INIT(cpu_timers[0]), \ | |
201 | LIST_HEAD_INIT(cpu_timers[1]), \ | |
202 | LIST_HEAD_INIT(cpu_timers[2]), \ | |
203 | } | |
204 | ||
857eceeb | 205 | /* Attach to the init_task data structure for proper alignment */ |
2af7687f | 206 | #define __init_task_data __attribute__((__section__(".data..init_task"))) |
857eceeb | 207 | |
1da177e4 LT |
208 | |
209 | #endif |