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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef _LINUX__INIT_TASK_H
2#define _LINUX__INIT_TASK_H
3
Dipankar Sarmaab2af1f2005-09-09 13:04:13 -07004#include <linux/rcupdate.h>
Ingo Molnarde30a2b2006-07-03 00:24:42 -07005#include <linux/irqflags.h>
Serge E. Hallyn4865ecf2006-10-02 02:18:14 -07006#include <linux/utsname.h>
Ingo Molnarfbb9ce952006-07-03 00:24:50 -07007#include <linux/lockdep.h>
Steven Rostedt5ac9f622009-03-25 20:55:00 -04008#include <linux/ftrace.h>
Kirill Korotaev73ea4132006-10-02 02:18:20 -07009#include <linux/ipc.h>
Cedric Le Goater9a575a92006-12-08 02:37:59 -080010#include <linux/pid_namespace.h>
Cedric Le Goateracce2922007-07-15 23:40:59 -070011#include <linux/user_namespace.h>
Andrew G. Morgan3898b1b2008-04-28 02:13:40 -070012#include <linux/securebits.h>
Eric W. Biederman772698f2007-09-12 11:55:17 +020013#include <net/net_namespace.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070014
Al Virof52111b2008-05-08 18:19:16 -040015extern struct files_struct init_files;
Al Viro18d8fda2008-12-26 00:35:37 -050016extern struct fs_struct init_fs;
Linus Torvalds1da177e2005-04-16 15:20:36 -070017
Cedric Le Goater1ec320a2006-12-08 02:37:55 -080018#define INIT_SIGNALS(sig) { \
19 .count = ATOMIC_INIT(1), \
Linus Torvalds1da177e2005-04-16 15:20:36 -070020 .wait_chldexit = __WAIT_QUEUE_HEAD_INITIALIZER(sig.wait_chldexit),\
Cedric Le Goater1ec320a2006-12-08 02:37:55 -080021 .shared_pending = { \
Linus Torvalds1da177e2005-04-16 15:20:36 -070022 .list = LIST_HEAD_INIT(sig.shared_pending.list), \
Cedric Le Goater1ec320a2006-12-08 02:37:55 -080023 .signal = {{0}}}, \
Linus Torvalds1da177e2005-04-16 15:20:36 -070024 .posix_timers = LIST_HEAD_INIT(sig.posix_timers), \
25 .cpu_timers = INIT_CPU_TIMERS(sig.cpu_timers), \
26 .rlim = INIT_RLIMITS, \
Peter Zijlstra4cd4c1b2009-02-05 12:24:16 +010027 .cputimer = { \
28 .cputime = INIT_CPUTIME, \
29 .running = 0, \
30 .lock = __SPIN_LOCK_UNLOCKED(sig.cputimer.lock), \
31 }, \
Linus Torvalds1da177e2005-04-16 15:20:36 -070032}
33
Serge E. Hallynab516012006-10-02 02:18:06 -070034extern struct nsproxy init_nsproxy;
35#define INIT_NSPROXY(nsproxy) { \
Cedric Le Goater9a575a92006-12-08 02:37:59 -080036 .pid_ns = &init_pid_ns, \
Serge E. Hallynab516012006-10-02 02:18:06 -070037 .count = ATOMIC_INIT(1), \
Serge E. Hallyn4865ecf2006-10-02 02:18:14 -070038 .uts_ns = &init_uts_ns, \
Kirill Korotaev6b3286e2006-12-08 02:37:56 -080039 .mnt_ns = NULL, \
Daniel Lezcano4fabcd72007-09-13 09:16:29 +020040 INIT_NET_NS(net_ns) \
Kirill Korotaev73ea4132006-10-02 02:18:20 -070041 INIT_IPC_NS(ipc_ns) \
Serge E. Hallynab516012006-10-02 02:18:06 -070042}
43
Linus Torvalds1da177e2005-04-16 15:20:36 -070044#define INIT_SIGHAND(sighand) { \
45 .count = ATOMIC_INIT(1), \
46 .action = { { { .sa_handler = NULL, } }, }, \
Ingo Molnare4d91912006-07-03 00:24:34 -070047 .siglock = __SPIN_LOCK_UNLOCKED(sighand.siglock), \
Davide Libenzib8fceee2007-09-20 12:40:16 -070048 .signalfd_wqh = __WAIT_QUEUE_HEAD_INITIALIZER(sighand.signalfd_wqh), \
Linus Torvalds1da177e2005-04-16 15:20:36 -070049}
50
51extern struct group_info init_groups;
52
Sukadev Bhattiprolu820e45d2007-05-10 22:23:00 -070053#define INIT_STRUCT_PID { \
54 .count = ATOMIC_INIT(1), \
Sukadev Bhattiprolu820e45d2007-05-10 22:23:00 -070055 .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, \
Sukadev Bhattiprolu4c3f2ea2007-10-18 23:40:03 -070061 .level = 0, \
62 .numbers = { { \
63 .nr = 0, \
64 .ns = &init_pid_ns, \
65 .pid_chain = { .next = NULL, .pprev = NULL }, \
66 }, } \
Sukadev Bhattiprolu820e45d2007-05-10 22:23:00 -070067}
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
Al Virobfef93a2008-01-10 04:53:18 -050078#ifdef CONFIG_AUDITSYSCALL
79#define INIT_IDS \
Eric Paris4746ec52008-01-08 10:06:53 -050080 .loginuid = -1, \
81 .sessionid = -1,
Al Virobfef93a2008-01-10 04:53:18 -050082#else
83#define INIT_IDS
84#endif
Serge E. Hallyn3b7391d2008-02-04 22:29:45 -080085
Serge E. Hallyn3b7391d2008-02-04 22:29:45 -080086/*
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
Serge E. Hallyn3b7391d2008-02-04 22:29:45 -080092
Paul E. McKenney6b3ef482009-08-22 13:56:53 -070093#ifdef CONFIG_TREE_PREEMPT_RCU
Paul E. McKenneyf41d9112009-08-22 13:56:52 -070094#define INIT_TASK_RCU_PREEMPT(tsk) \
95 .rcu_read_lock_nesting = 0, \
96 .rcu_read_unlock_special = 0, \
Paul E. McKenneydd5d19b2009-08-27 14:58:16 -070097 .rcu_blocked_node = NULL, \
Paul E. McKenneyf41d9112009-08-22 13:56:52 -070098 .rcu_node_entry = LIST_HEAD_INIT(tsk.rcu_node_entry),
99#else
100#define INIT_TASK_RCU_PREEMPT(tsk)
101#endif
102
David Howellsb6dff3e2008-11-14 10:39:16 +1100103extern struct cred init_cred;
104
Ingo Molnarcdd6c482009-09-21 12:02:48 +0200105#ifdef CONFIG_PERF_EVENTS
106# define INIT_PERF_EVENTS(tsk) \
107 .perf_event_mutex = \
108 __MUTEX_INITIALIZER(tsk.perf_event_mutex), \
109 .perf_event_list = LIST_HEAD_INIT(tsk.perf_event_list),
Peter Zijlstra082ff5a2009-05-23 18:29:00 +0200110#else
Ingo Molnarcdd6c482009-09-21 12:02:48 +0200111# define INIT_PERF_EVENTS(tsk)
Peter Zijlstra082ff5a2009-05-23 18:29:00 +0200112#endif
113
Linus Torvalds1da177e2005-04-16 15:20:36 -0700114/*
115 * INIT_TASK is used to set up the first task table, touch at
116 * your own risk!. Base=0, limit=0x1fffff (=2MB)
117 */
118#define INIT_TASK(tsk) \
119{ \
120 .state = 0, \
Roman Zippelf7e42172007-05-09 02:35:17 -0700121 .stack = &init_thread_info, \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122 .usage = ATOMIC_INIT(2), \
Oleg Nesterov7b34e422008-07-25 01:47:37 -0700123 .flags = PF_KTHREAD, \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700124 .lock_depth = -1, \
125 .prio = MAX_PRIO-20, \
126 .static_prio = MAX_PRIO-20, \
Ingo Molnarb29739f2006-06-27 02:54:51 -0700127 .normal_prio = MAX_PRIO-20, \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700128 .policy = SCHED_NORMAL, \
129 .cpus_allowed = CPU_MASK_ALL, \
130 .mm = NULL, \
131 .active_mm = &init_mm, \
Peter Zijlstra4a55bd52008-04-19 19:45:00 +0200132 .se = { \
133 .group_node = LIST_HEAD_INIT(tsk.se.group_node), \
134 }, \
Peter Zijlstrafa717062008-01-25 21:08:27 +0100135 .rt = { \
136 .run_list = LIST_HEAD_INIT(tsk.rt.run_list), \
Peter Zijlstra6f505b12008-01-25 21:08:30 +0100137 .time_slice = HZ, \
138 .nr_cpus_allowed = NR_CPUS, \
139 }, \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700140 .tasks = LIST_HEAD_INIT(tsk.tasks), \
Gregory Haskins917b6272008-12-29 09:39:53 -0500141 .pushable_tasks = PLIST_NODE_INIT(tsk.pushable_tasks, MAX_PRIO), \
Roland McGrathf4700212008-03-24 18:36:23 -0700142 .ptraced = LIST_HEAD_INIT(tsk.ptraced), \
143 .ptrace_entry = LIST_HEAD_INIT(tsk.ptrace_entry), \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700144 .real_parent = &tsk, \
145 .parent = &tsk, \
146 .children = LIST_HEAD_INIT(tsk.children), \
147 .sibling = LIST_HEAD_INIT(tsk.sibling), \
148 .group_leader = &tsk, \
David Howells3b11a1d2008-11-14 10:39:26 +1100149 .real_cred = &init_cred, \
David Howellsf1752ee2008-11-14 10:39:17 +1100150 .cred = &init_cred, \
David Howells5e751e92009-05-08 13:55:22 +0100151 .cred_guard_mutex = \
152 __MUTEX_INITIALIZER(tsk.cred_guard_mutex), \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153 .comm = "swapper", \
154 .thread = INIT_THREAD, \
155 .fs = &init_fs, \
156 .files = &init_files, \
157 .signal = &init_signals, \
158 .sighand = &init_sighand, \
Serge E. Hallynab516012006-10-02 02:18:06 -0700159 .nsproxy = &init_nsproxy, \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700160 .pending = { \
161 .list = LIST_HEAD_INIT(tsk.pending.list), \
162 .signal = {{0}}}, \
163 .blocked = {{0}}, \
Ingo Molnare4d91912006-07-03 00:24:34 -0700164 .alloc_lock = __SPIN_LOCK_UNLOCKED(tsk.alloc_lock), \
Linus Torvaldsb6e32242009-12-17 13:23:24 -0800165 .journal_info = NULL, \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166 .cpu_timers = INIT_CPU_TIMERS(tsk.cpu_timers), \
Jens Axboe22e2c502005-06-27 10:55:12 +0200167 .fs_excl = ATOMIC_INIT(0), \
Thomas Gleixner1d615482009-11-17 14:54:03 +0100168 .pi_lock = __RAW_SPIN_LOCK_UNLOCKED(tsk.pi_lock), \
Arjan van de Ven69766752008-09-01 15:52:40 -0700169 .timer_slack_ns = 50000, /* 50 usec default slack */ \
Sukadev Bhattiprolu820e45d2007-05-10 22:23:00 -0700170 .pids = { \
171 [PIDTYPE_PID] = INIT_PID_LINK(PIDTYPE_PID), \
172 [PIDTYPE_PGID] = INIT_PID_LINK(PIDTYPE_PGID), \
173 [PIDTYPE_SID] = INIT_PID_LINK(PIDTYPE_SID), \
174 }, \
Peter Zijlstra3e26c142007-10-16 23:25:50 -0700175 .dirties = INIT_PROP_LOCAL_SINGLE(dirties), \
Al Virobfef93a2008-01-10 04:53:18 -0500176 INIT_IDS \
Ingo Molnarcdd6c482009-09-21 12:02:48 +0200177 INIT_PERF_EVENTS(tsk) \
Ingo Molnarde30a2b2006-07-03 00:24:42 -0700178 INIT_TRACE_IRQFLAGS \
Ingo Molnarfbb9ce952006-07-03 00:24:50 -0700179 INIT_LOCKDEP \
Steven Rostedt5ac9f622009-03-25 20:55:00 -0400180 INIT_FTRACE_GRAPH \
Steven Rostedt261842b2009-04-16 21:41:52 -0400181 INIT_TRACE_RECURSION \
Paul E. McKenneyf41d9112009-08-22 13:56:52 -0700182 INIT_TASK_RCU_PREEMPT(tsk) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183}
184
185
186#define INIT_CPU_TIMERS(cpu_timers) \
187{ \
188 LIST_HEAD_INIT(cpu_timers[0]), \
189 LIST_HEAD_INIT(cpu_timers[1]), \
190 LIST_HEAD_INIT(cpu_timers[2]), \
191}
192
Tim Abbott857ecee2009-06-23 19:59:36 -0400193/* Attach to the init_task data structure for proper alignment */
194#define __init_task_data __attribute__((__section__(".data.init_task")))
195
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196
197#endif