Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1#ifndef _LINUX__INIT_TASK_H
2#define _LINUX__INIT_TASK_H
3
4#include <linux/rcupdate.h>
5#include <linux/irqflags.h>
6#include <linux/utsname.h>
7#include <linux/lockdep.h>
8#include <linux/ftrace.h>
9#include <linux/ipc.h>
10#include <linux/pid_namespace.h>
11#include <linux/user_namespace.h>
12#include <linux/securebits.h>
13#include <net/net_namespace.h>
14
15extern struct files_struct init_files;
16extern struct fs_struct init_fs;
17
18#define INIT_SIGNALS(sig) { \
19 .count = ATOMIC_INIT(1), \
20 .wait_chldexit = __WAIT_QUEUE_HEAD_INITIALIZER(sig.wait_chldexit),\
21 .shared_pending = { \
22 .list = LIST_HEAD_INIT(sig.shared_pending.list), \
23 .signal = {{0}}}, \
24 .posix_timers = LIST_HEAD_INIT(sig.posix_timers), \
25 .cpu_timers = INIT_CPU_TIMERS(sig.cpu_timers), \
26 .rlim = INIT_RLIMITS, \
27 .cputimer = { \
28 .cputime = INIT_CPUTIME, \
29 .running = 0, \
30 .lock = __SPIN_LOCK_UNLOCKED(sig.cputimer.lock), \
31 }, \
32}
33
34extern struct nsproxy init_nsproxy;
35
36#define INIT_SIGHAND(sighand) { \
37 .count = ATOMIC_INIT(1), \
38 .action = { { { .sa_handler = NULL, } }, }, \
39 .siglock = __SPIN_LOCK_UNLOCKED(sighand.siglock), \
40 .signalfd_wqh = __WAIT_QUEUE_HEAD_INITIALIZER(sighand.signalfd_wqh), \
41}
42
43extern struct group_info init_groups;
44
45#define INIT_STRUCT_PID { \
46 .count = ATOMIC_INIT(1), \
47 .tasks = { \
48 { .first = &init_task.pids[PIDTYPE_PID].node }, \
49 { .first = &init_task.pids[PIDTYPE_PGID].node }, \
50 { .first = &init_task.pids[PIDTYPE_SID].node }, \
51 }, \
52 .rcu = RCU_HEAD_INIT, \
53 .level = 0, \
54 .numbers = { { \
55 .nr = 0, \
56 .ns = &init_pid_ns, \
57 .pid_chain = { .next = NULL, .pprev = NULL }, \
58 }, } \
59}
60
61#define INIT_PID_LINK(type) \
62{ \
63 .node = { \
64 .next = NULL, \
65 .pprev = &init_struct_pid.tasks[type].first, \
66 }, \
67 .pid = &init_struct_pid, \
68}
69
70#ifdef CONFIG_AUDITSYSCALL
71#define INIT_IDS \
72 .loginuid = -1, \
73 .sessionid = -1,
74#else
75#define INIT_IDS
76#endif
77
78/*
79 * Because of the reduced scope of CAP_SETPCAP when filesystem
80 * capabilities are in effect, it is safe to allow CAP_SETPCAP to
81 * be available in the default configuration.
82 */
83# define CAP_INIT_BSET CAP_FULL_SET
84
85#ifdef CONFIG_TREE_PREEMPT_RCU
86#define INIT_TASK_RCU_PREEMPT(tsk) \
87 .rcu_read_lock_nesting = 0, \
88 .rcu_read_unlock_special = 0, \
89 .rcu_blocked_node = NULL, \
90 .rcu_node_entry = LIST_HEAD_INIT(tsk.rcu_node_entry),
91#else
92#define INIT_TASK_RCU_PREEMPT(tsk)
93#endif
94
95extern struct cred init_cred;
96
97#ifdef CONFIG_PERF_EVENTS
98# define INIT_PERF_EVENTS(tsk) \
99 .perf_event_mutex = \
100 __MUTEX_INITIALIZER(tsk.perf_event_mutex), \
101 .perf_event_list = LIST_HEAD_INIT(tsk.perf_event_list),
102#else
103# define INIT_PERF_EVENTS(tsk)
104#endif
105
106/*
107 * INIT_TASK is used to set up the first task table, touch at
108 * your own risk!. Base=0, limit=0x1fffff (=2MB)
109 */
110#define INIT_TASK(tsk) \
111{ \
112 .state = 0, \
113 .stack = &init_thread_info, \
114 .usage = ATOMIC_INIT(2), \
115 .flags = PF_KTHREAD, \
116 .lock_depth = -1, \
117 .prio = MAX_PRIO-20, \
118 .static_prio = MAX_PRIO-20, \
119 .normal_prio = MAX_PRIO-20, \
120 .policy = SCHED_NORMAL, \
121 .cpus_allowed = CPU_MASK_ALL, \
122 .mm = NULL, \
123 .active_mm = &init_mm, \
124 .se = { \
125 .group_node = LIST_HEAD_INIT(tsk.se.group_node), \
126 }, \
127 .rt = { \
128 .run_list = LIST_HEAD_INIT(tsk.rt.run_list), \
129 .time_slice = HZ, \
130 .nr_cpus_allowed = NR_CPUS, \
131 }, \
132 .tasks = LIST_HEAD_INIT(tsk.tasks), \
133 .pushable_tasks = PLIST_NODE_INIT(tsk.pushable_tasks, MAX_PRIO), \
134 .ptraced = LIST_HEAD_INIT(tsk.ptraced), \
135 .ptrace_entry = LIST_HEAD_INIT(tsk.ptrace_entry), \
136 .real_parent = &tsk, \
137 .parent = &tsk, \
138 .children = LIST_HEAD_INIT(tsk.children), \
139 .sibling = LIST_HEAD_INIT(tsk.sibling), \
140 .group_leader = &tsk, \
141 .real_cred = &init_cred, \
142 .cred = &init_cred, \
143 .cred_guard_mutex = \
144 __MUTEX_INITIALIZER(tsk.cred_guard_mutex), \
145 .comm = "swapper", \
146 .thread = INIT_THREAD, \
147 .fs = &init_fs, \
148 .files = &init_files, \
149 .signal = &init_signals, \
150 .sighand = &init_sighand, \
151 .nsproxy = &init_nsproxy, \
152 .pending = { \
153 .list = LIST_HEAD_INIT(tsk.pending.list), \
154 .signal = {{0}}}, \
155 .blocked = {{0}}, \
156 .alloc_lock = __SPIN_LOCK_UNLOCKED(tsk.alloc_lock), \
157 .journal_info = NULL, \
158 .cpu_timers = INIT_CPU_TIMERS(tsk.cpu_timers), \
159 .fs_excl = ATOMIC_INIT(0), \
160 .pi_lock = __RAW_SPIN_LOCK_UNLOCKED(tsk.pi_lock), \
161 .timer_slack_ns = 50000, /* 50 usec default slack */ \
162 .pids = { \
163 [PIDTYPE_PID] = INIT_PID_LINK(PIDTYPE_PID), \
164 [PIDTYPE_PGID] = INIT_PID_LINK(PIDTYPE_PGID), \
165 [PIDTYPE_SID] = INIT_PID_LINK(PIDTYPE_SID), \
166 }, \
167 .dirties = INIT_PROP_LOCAL_SINGLE(dirties), \
168 INIT_IDS \
169 INIT_PERF_EVENTS(tsk) \
170 INIT_TRACE_IRQFLAGS \
171 INIT_LOCKDEP \
172 INIT_FTRACE_GRAPH \
173 INIT_TRACE_RECURSION \
174 INIT_TASK_RCU_PREEMPT(tsk) \
175}
176
177
178#define INIT_CPU_TIMERS(cpu_timers) \
179{ \
180 LIST_HEAD_INIT(cpu_timers[0]), \
181 LIST_HEAD_INIT(cpu_timers[1]), \
182 LIST_HEAD_INIT(cpu_timers[2]), \
183}
184
185/* Attach to the init_task data structure for proper alignment */
186#define __init_task_data __attribute__((__section__(".data.init_task")))
187
188
189#endif