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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 | |
f52111b1 | 15 | extern struct files_struct init_files; |
18d8fda7 | 16 | extern struct fs_struct init_fs; |
1da177e4 | 17 | |
1ec320af CLG |
18 | #define INIT_SIGNALS(sig) { \ |
19 | .count = ATOMIC_INIT(1), \ | |
1da177e4 | 20 | .wait_chldexit = __WAIT_QUEUE_HEAD_INITIALIZER(sig.wait_chldexit),\ |
1ec320af | 21 | .shared_pending = { \ |
1da177e4 | 22 | .list = LIST_HEAD_INIT(sig.shared_pending.list), \ |
1ec320af | 23 | .signal = {{0}}}, \ |
1da177e4 LT |
24 | .posix_timers = LIST_HEAD_INIT(sig.posix_timers), \ |
25 | .cpu_timers = INIT_CPU_TIMERS(sig.cpu_timers), \ | |
26 | .rlim = INIT_RLIMITS, \ | |
4cd4c1b4 PZ |
27 | .cputimer = { \ |
28 | .cputime = INIT_CPUTIME, \ | |
29 | .running = 0, \ | |
30 | .lock = __SPIN_LOCK_UNLOCKED(sig.cputimer.lock), \ | |
31 | }, \ | |
1da177e4 LT |
32 | } |
33 | ||
ab516013 SH |
34 | extern struct nsproxy init_nsproxy; |
35 | #define INIT_NSPROXY(nsproxy) { \ | |
9a575a92 | 36 | .pid_ns = &init_pid_ns, \ |
ab516013 | 37 | .count = ATOMIC_INIT(1), \ |
4865ecf1 | 38 | .uts_ns = &init_uts_ns, \ |
6b3286ed | 39 | .mnt_ns = NULL, \ |
4fabcd71 | 40 | INIT_NET_NS(net_ns) \ |
73ea4130 | 41 | INIT_IPC_NS(ipc_ns) \ |
ab516013 SH |
42 | } |
43 | ||
1da177e4 LT |
44 | #define INIT_SIGHAND(sighand) { \ |
45 | .count = ATOMIC_INIT(1), \ | |
46 | .action = { { { .sa_handler = NULL, } }, }, \ | |
e4d91918 | 47 | .siglock = __SPIN_LOCK_UNLOCKED(sighand.siglock), \ |
b8fceee1 | 48 | .signalfd_wqh = __WAIT_QUEUE_HEAD_INITIALIZER(sighand.signalfd_wqh), \ |
1da177e4 LT |
49 | } |
50 | ||
51 | extern struct group_info init_groups; | |
52 | ||
820e45db SB |
53 | #define INIT_STRUCT_PID { \ |
54 | .count = ATOMIC_INIT(1), \ | |
820e45db SB |
55 | .tasks = { \ |
56 | { .first = &init_task.pids[PIDTYPE_PID].node }, \ | |
57 | { .first = &init_task.pids[PIDTYPE_PGID].node }, \ | |
58 | { .first = &init_task.pids[PIDTYPE_SID].node }, \ | |
59 | }, \ | |
60 | .rcu = RCU_HEAD_INIT, \ | |
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, \ | |
73 | .pprev = &init_struct_pid.tasks[type].first, \ | |
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 SH |
85 | |
86 | #ifdef CONFIG_SECURITY_FILE_CAPABILITIES | |
87 | /* | |
88 | * Because of the reduced scope of CAP_SETPCAP when filesystem | |
89 | * capabilities are in effect, it is safe to allow CAP_SETPCAP to | |
90 | * be available in the default configuration. | |
91 | */ | |
92 | # define CAP_INIT_BSET CAP_FULL_SET | |
93 | #else | |
94 | # define CAP_INIT_BSET CAP_INIT_EFF_SET | |
95 | #endif | |
96 | ||
6b3ef48a | 97 | #ifdef CONFIG_TREE_PREEMPT_RCU |
f41d911f PM |
98 | #define INIT_TASK_RCU_PREEMPT(tsk) \ |
99 | .rcu_read_lock_nesting = 0, \ | |
100 | .rcu_read_unlock_special = 0, \ | |
dd5d19ba | 101 | .rcu_blocked_node = NULL, \ |
f41d911f PM |
102 | .rcu_node_entry = LIST_HEAD_INIT(tsk.rcu_node_entry), |
103 | #else | |
104 | #define INIT_TASK_RCU_PREEMPT(tsk) | |
105 | #endif | |
106 | ||
b6dff3ec DH |
107 | extern struct cred init_cred; |
108 | ||
082ff5a2 PZ |
109 | #ifdef CONFIG_PERF_COUNTERS |
110 | # define INIT_PERF_COUNTERS(tsk) \ | |
111 | .perf_counter_mutex = \ | |
112 | __MUTEX_INITIALIZER(tsk.perf_counter_mutex), \ | |
113 | .perf_counter_list = LIST_HEAD_INIT(tsk.perf_counter_list), | |
114 | #else | |
115 | # define INIT_PERF_COUNTERS(tsk) | |
116 | #endif | |
117 | ||
1da177e4 LT |
118 | /* |
119 | * INIT_TASK is used to set up the first task table, touch at | |
120 | * your own risk!. Base=0, limit=0x1fffff (=2MB) | |
121 | */ | |
122 | #define INIT_TASK(tsk) \ | |
123 | { \ | |
124 | .state = 0, \ | |
f7e4217b | 125 | .stack = &init_thread_info, \ |
1da177e4 | 126 | .usage = ATOMIC_INIT(2), \ |
7b34e428 | 127 | .flags = PF_KTHREAD, \ |
1da177e4 LT |
128 | .lock_depth = -1, \ |
129 | .prio = MAX_PRIO-20, \ | |
130 | .static_prio = MAX_PRIO-20, \ | |
b29739f9 | 131 | .normal_prio = MAX_PRIO-20, \ |
1da177e4 LT |
132 | .policy = SCHED_NORMAL, \ |
133 | .cpus_allowed = CPU_MASK_ALL, \ | |
134 | .mm = NULL, \ | |
135 | .active_mm = &init_mm, \ | |
4a55bd5e PZ |
136 | .se = { \ |
137 | .group_node = LIST_HEAD_INIT(tsk.se.group_node), \ | |
138 | }, \ | |
fa717060 PZ |
139 | .rt = { \ |
140 | .run_list = LIST_HEAD_INIT(tsk.rt.run_list), \ | |
6f505b16 PZ |
141 | .time_slice = HZ, \ |
142 | .nr_cpus_allowed = NR_CPUS, \ | |
143 | }, \ | |
1da177e4 | 144 | .tasks = LIST_HEAD_INIT(tsk.tasks), \ |
917b627d | 145 | .pushable_tasks = PLIST_NODE_INIT(tsk.pushable_tasks, MAX_PRIO), \ |
f470021a RM |
146 | .ptraced = LIST_HEAD_INIT(tsk.ptraced), \ |
147 | .ptrace_entry = LIST_HEAD_INIT(tsk.ptrace_entry), \ | |
1da177e4 LT |
148 | .real_parent = &tsk, \ |
149 | .parent = &tsk, \ | |
150 | .children = LIST_HEAD_INIT(tsk.children), \ | |
151 | .sibling = LIST_HEAD_INIT(tsk.sibling), \ | |
152 | .group_leader = &tsk, \ | |
3b11a1de | 153 | .real_cred = &init_cred, \ |
f1752eec | 154 | .cred = &init_cred, \ |
5e751e99 DH |
155 | .cred_guard_mutex = \ |
156 | __MUTEX_INITIALIZER(tsk.cred_guard_mutex), \ | |
1da177e4 LT |
157 | .comm = "swapper", \ |
158 | .thread = INIT_THREAD, \ | |
159 | .fs = &init_fs, \ | |
160 | .files = &init_files, \ | |
161 | .signal = &init_signals, \ | |
162 | .sighand = &init_sighand, \ | |
ab516013 | 163 | .nsproxy = &init_nsproxy, \ |
1da177e4 LT |
164 | .pending = { \ |
165 | .list = LIST_HEAD_INIT(tsk.pending.list), \ | |
166 | .signal = {{0}}}, \ | |
167 | .blocked = {{0}}, \ | |
e4d91918 | 168 | .alloc_lock = __SPIN_LOCK_UNLOCKED(tsk.alloc_lock), \ |
1da177e4 LT |
169 | .journal_info = NULL, \ |
170 | .cpu_timers = INIT_CPU_TIMERS(tsk.cpu_timers), \ | |
22e2c507 | 171 | .fs_excl = ATOMIC_INIT(0), \ |
b32e41bb | 172 | .pi_lock = __SPIN_LOCK_UNLOCKED(tsk.pi_lock), \ |
6976675d | 173 | .timer_slack_ns = 50000, /* 50 usec default slack */ \ |
820e45db SB |
174 | .pids = { \ |
175 | [PIDTYPE_PID] = INIT_PID_LINK(PIDTYPE_PID), \ | |
176 | [PIDTYPE_PGID] = INIT_PID_LINK(PIDTYPE_PGID), \ | |
177 | [PIDTYPE_SID] = INIT_PID_LINK(PIDTYPE_SID), \ | |
178 | }, \ | |
3e26c149 | 179 | .dirties = INIT_PROP_LOCAL_SINGLE(dirties), \ |
bfef93a5 | 180 | INIT_IDS \ |
082ff5a2 | 181 | INIT_PERF_COUNTERS(tsk) \ |
de30a2b3 | 182 | INIT_TRACE_IRQFLAGS \ |
fbb9ce95 | 183 | INIT_LOCKDEP \ |
5ac9f622 | 184 | INIT_FTRACE_GRAPH \ |
261842b7 | 185 | INIT_TRACE_RECURSION \ |
f41d911f | 186 | INIT_TASK_RCU_PREEMPT(tsk) \ |
1da177e4 LT |
187 | } |
188 | ||
189 | ||
190 | #define INIT_CPU_TIMERS(cpu_timers) \ | |
191 | { \ | |
192 | LIST_HEAD_INIT(cpu_timers[0]), \ | |
193 | LIST_HEAD_INIT(cpu_timers[1]), \ | |
194 | LIST_HEAD_INIT(cpu_timers[2]), \ | |
195 | } | |
196 | ||
857eceeb TA |
197 | /* Attach to the init_task data structure for proper alignment */ |
198 | #define __init_task_data __attribute__((__section__(".data.init_task"))) | |
199 | ||
1da177e4 LT |
200 | |
201 | #endif |