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/ipc.h>
9#include <linux/pid_namespace.h>
10#include <linux/user_namespace.h>
11#include <linux/securebits.h>
12#include <net/net_namespace.h>
13
14extern struct files_struct init_files;
15extern struct fs_struct init_fs;
16
17#define INIT_KIOCTX(name, which_mm) \
18{ \
19 .users = ATOMIC_INIT(1), \
20 .dead = 0, \
21 .mm = &which_mm, \
22 .user_id = 0, \
23 .next = NULL, \
24 .wait = __WAIT_QUEUE_HEAD_INITIALIZER(name.wait), \
25 .ctx_lock = __SPIN_LOCK_UNLOCKED(name.ctx_lock), \
26 .reqs_active = 0U, \
27 .max_reqs = ~0U, \
28}
29
30#define INIT_MM(name) \
31{ \
32 .mm_rb = RB_ROOT, \
33 .pgd = swapper_pg_dir, \
34 .mm_users = ATOMIC_INIT(2), \
35 .mm_count = ATOMIC_INIT(1), \
36 .mmap_sem = __RWSEM_INITIALIZER(name.mmap_sem), \
37 .page_table_lock = __SPIN_LOCK_UNLOCKED(name.page_table_lock), \
38 .mmlist = LIST_HEAD_INIT(name.mmlist), \
39 .cpu_vm_mask = CPU_MASK_ALL, \
40}
41
42#define INIT_SIGNALS(sig) { \
43 .count = ATOMIC_INIT(1), \
44 .wait_chldexit = __WAIT_QUEUE_HEAD_INITIALIZER(sig.wait_chldexit),\
45 .shared_pending = { \
46 .list = LIST_HEAD_INIT(sig.shared_pending.list), \
47 .signal = {{0}}}, \
48 .posix_timers = LIST_HEAD_INIT(sig.posix_timers), \
49 .cpu_timers = INIT_CPU_TIMERS(sig.cpu_timers), \
50 .rlim = INIT_RLIMITS, \
51}
52
53extern struct nsproxy init_nsproxy;
54#define INIT_NSPROXY(nsproxy) { \
55 .pid_ns = &init_pid_ns, \
56 .count = ATOMIC_INIT(1), \
57 .uts_ns = &init_uts_ns, \
58 .mnt_ns = NULL, \
59 INIT_NET_NS(net_ns) \
60 INIT_IPC_NS(ipc_ns) \
61}
62
63#define INIT_SIGHAND(sighand) { \
64 .count = ATOMIC_INIT(1), \
65 .action = { { { .sa_handler = NULL, } }, }, \
66 .siglock = __SPIN_LOCK_UNLOCKED(sighand.siglock), \
67 .signalfd_wqh = __WAIT_QUEUE_HEAD_INITIALIZER(sighand.signalfd_wqh), \
68}
69
70extern struct group_info init_groups;
71
72#define INIT_STRUCT_PID { \
73 .count = ATOMIC_INIT(1), \
74 .tasks = { \
75 { .first = &init_task.pids[PIDTYPE_PID].node }, \
76 { .first = &init_task.pids[PIDTYPE_PGID].node }, \
77 { .first = &init_task.pids[PIDTYPE_SID].node }, \
78 }, \
79 .rcu = RCU_HEAD_INIT, \
80 .level = 0, \
81 .numbers = { { \
82 .nr = 0, \
83 .ns = &init_pid_ns, \
84 .pid_chain = { .next = NULL, .pprev = NULL }, \
85 }, } \
86}
87
88#define INIT_PID_LINK(type) \
89{ \
90 .node = { \
91 .next = NULL, \
92 .pprev = &init_struct_pid.tasks[type].first, \
93 }, \
94 .pid = &init_struct_pid, \
95}
96
97#ifdef CONFIG_AUDITSYSCALL
98#define INIT_IDS \
99 .loginuid = -1, \
100 .sessionid = -1,
101#else
102#define INIT_IDS
103#endif
104
105#ifdef CONFIG_SECURITY_FILE_CAPABILITIES
106/*
107 * Because of the reduced scope of CAP_SETPCAP when filesystem
108 * capabilities are in effect, it is safe to allow CAP_SETPCAP to
109 * be available in the default configuration.
110 */
111# define CAP_INIT_BSET CAP_FULL_SET
112#else
113# define CAP_INIT_BSET CAP_INIT_EFF_SET
114#endif
115
116extern struct cred init_cred;
117
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, \
125 .stack = &init_thread_info, \
126 .usage = ATOMIC_INIT(2), \
127 .flags = PF_KTHREAD, \
128 .lock_depth = -1, \
129 .prio = MAX_PRIO-20, \
130 .static_prio = MAX_PRIO-20, \
131 .normal_prio = MAX_PRIO-20, \
132 .policy = SCHED_NORMAL, \
133 .cpus_allowed = CPU_MASK_ALL, \
134 .mm = NULL, \
135 .active_mm = &init_mm, \
136 .se = { \
137 .group_node = LIST_HEAD_INIT(tsk.se.group_node), \
138 }, \
139 .rt = { \
140 .run_list = LIST_HEAD_INIT(tsk.rt.run_list), \
141 .time_slice = HZ, \
142 .nr_cpus_allowed = NR_CPUS, \
143 }, \
144 .tasks = LIST_HEAD_INIT(tsk.tasks), \
145 .ptraced = LIST_HEAD_INIT(tsk.ptraced), \
146 .ptrace_entry = LIST_HEAD_INIT(tsk.ptrace_entry), \
147 .real_parent = &tsk, \
148 .parent = &tsk, \
149 .children = LIST_HEAD_INIT(tsk.children), \
150 .sibling = LIST_HEAD_INIT(tsk.sibling), \
151 .group_leader = &tsk, \
152 .real_cred = &init_cred, \
153 .cred = &init_cred, \
154 .cred_exec_mutex = \
155 __MUTEX_INITIALIZER(tsk.cred_exec_mutex), \
156 .comm = "swapper", \
157 .thread = INIT_THREAD, \
158 .fs = &init_fs, \
159 .files = &init_files, \
160 .signal = &init_signals, \
161 .sighand = &init_sighand, \
162 .nsproxy = &init_nsproxy, \
163 .pending = { \
164 .list = LIST_HEAD_INIT(tsk.pending.list), \
165 .signal = {{0}}}, \
166 .blocked = {{0}}, \
167 .alloc_lock = __SPIN_LOCK_UNLOCKED(tsk.alloc_lock), \
168 .journal_info = NULL, \
169 .cpu_timers = INIT_CPU_TIMERS(tsk.cpu_timers), \
170 .fs_excl = ATOMIC_INIT(0), \
171 .pi_lock = __SPIN_LOCK_UNLOCKED(tsk.pi_lock), \
172 .timer_slack_ns = 50000, /* 50 usec default slack */ \
173 .pids = { \
174 [PIDTYPE_PID] = INIT_PID_LINK(PIDTYPE_PID), \
175 [PIDTYPE_PGID] = INIT_PID_LINK(PIDTYPE_PGID), \
176 [PIDTYPE_SID] = INIT_PID_LINK(PIDTYPE_SID), \
177 }, \
178 .dirties = INIT_PROP_LOCAL_SINGLE(dirties), \
179 INIT_IDS \
180 INIT_TRACE_IRQFLAGS \
181 INIT_LOCKDEP \
182}
183
184
185#define INIT_CPU_TIMERS(cpu_timers) \
186{ \
187 LIST_HEAD_INIT(cpu_timers[0]), \
188 LIST_HEAD_INIT(cpu_timers[1]), \
189 LIST_HEAD_INIT(cpu_timers[2]), \
190}
191
192
193#endif