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/file.h>
5#include <linux/rcupdate.h>
6#include <linux/irqflags.h>
7#include <linux/utsname.h>
8#include <linux/lockdep.h>
9#include <linux/ipc.h>
10#include <linux/pid_namespace.h>
11#include <linux/user_namespace.h>
12
13#define INIT_FDTABLE \
14{ \
15 .max_fds = NR_OPEN_DEFAULT, \
16 .fd = &init_files.fd_array[0], \
17 .close_on_exec = (fd_set *)&init_files.close_on_exec_init, \
18 .open_fds = (fd_set *)&init_files.open_fds_init, \
19 .rcu = RCU_HEAD_INIT, \
20 .next = NULL, \
21}
22
23#define INIT_FILES \
24{ \
25 .count = ATOMIC_INIT(1), \
26 .fdt = &init_files.fdtab, \
27 .fdtab = INIT_FDTABLE, \
28 .file_lock = __SPIN_LOCK_UNLOCKED(init_task.file_lock), \
29 .next_fd = 0, \
30 .close_on_exec_init = { { 0, } }, \
31 .open_fds_init = { { 0, } }, \
32 .fd_array = { NULL, } \
33}
34
35#define INIT_KIOCTX(name, which_mm) \
36{ \
37 .users = ATOMIC_INIT(1), \
38 .dead = 0, \
39 .mm = &which_mm, \
40 .user_id = 0, \
41 .next = NULL, \
42 .wait = __WAIT_QUEUE_HEAD_INITIALIZER(name.wait), \
43 .ctx_lock = __SPIN_LOCK_UNLOCKED(name.ctx_lock), \
44 .reqs_active = 0U, \
45 .max_reqs = ~0U, \
46}
47
48#define INIT_MM(name) \
49{ \
50 .mm_rb = RB_ROOT, \
51 .pgd = swapper_pg_dir, \
52 .mm_users = ATOMIC_INIT(2), \
53 .mm_count = ATOMIC_INIT(1), \
54 .mmap_sem = __RWSEM_INITIALIZER(name.mmap_sem), \
55 .page_table_lock = __SPIN_LOCK_UNLOCKED(name.page_table_lock), \
56 .mmlist = LIST_HEAD_INIT(name.mmlist), \
57 .cpu_vm_mask = CPU_MASK_ALL, \
58}
59
60#define INIT_SIGNALS(sig) { \
61 .count = ATOMIC_INIT(1), \
62 .wait_chldexit = __WAIT_QUEUE_HEAD_INITIALIZER(sig.wait_chldexit),\
63 .shared_pending = { \
64 .list = LIST_HEAD_INIT(sig.shared_pending.list), \
65 .signal = {{0}}}, \
66 .posix_timers = LIST_HEAD_INIT(sig.posix_timers), \
67 .cpu_timers = INIT_CPU_TIMERS(sig.cpu_timers), \
68 .rlim = INIT_RLIMITS, \
69 .pgrp = 0, \
70 .tty_old_pgrp = NULL, \
71 { .__session = 0}, \
72}
73
74extern struct nsproxy init_nsproxy;
75#define INIT_NSPROXY(nsproxy) { \
76 .pid_ns = &init_pid_ns, \
77 .count = ATOMIC_INIT(1), \
78 .nslock = __SPIN_LOCK_UNLOCKED(nsproxy.nslock), \
79 .uts_ns = &init_uts_ns, \
80 .mnt_ns = NULL, \
81 INIT_IPC_NS(ipc_ns) \
82 .user_ns = &init_user_ns, \
83}
84
85#define INIT_SIGHAND(sighand) { \
86 .count = ATOMIC_INIT(1), \
87 .action = { { { .sa_handler = NULL, } }, }, \
88 .siglock = __SPIN_LOCK_UNLOCKED(sighand.siglock), \
89 .signalfd_wqh = __WAIT_QUEUE_HEAD_INITIALIZER(sighand.signalfd_wqh), \
90}
91
92extern struct group_info init_groups;
93
94#define INIT_STRUCT_PID { \
95 .count = ATOMIC_INIT(1), \
96 .nr = 0, \
97 /* Don't put this struct pid in pid_hash */ \
98 .pid_chain = { .next = NULL, .pprev = NULL }, \
99 .tasks = { \
100 { .first = &init_task.pids[PIDTYPE_PID].node }, \
101 { .first = &init_task.pids[PIDTYPE_PGID].node }, \
102 { .first = &init_task.pids[PIDTYPE_SID].node }, \
103 }, \
104 .rcu = RCU_HEAD_INIT, \
105}
106
107#define INIT_PID_LINK(type) \
108{ \
109 .node = { \
110 .next = NULL, \
111 .pprev = &init_struct_pid.tasks[type].first, \
112 }, \
113 .pid = &init_struct_pid, \
114}
115
116/*
117 * INIT_TASK is used to set up the first task table, touch at
118 * your own risk!. Base=0, limit=0x1fffff (=2MB)
119 */
120#define INIT_TASK(tsk) \
121{ \
122 .state = 0, \
123 .stack = &init_thread_info, \
124 .usage = ATOMIC_INIT(2), \
125 .flags = 0, \
126 .lock_depth = -1, \
127 .prio = MAX_PRIO-20, \
128 .static_prio = MAX_PRIO-20, \
129 .normal_prio = MAX_PRIO-20, \
130 .policy = SCHED_NORMAL, \
131 .cpus_allowed = CPU_MASK_ALL, \
132 .mm = NULL, \
133 .active_mm = &init_mm, \
134 .run_list = LIST_HEAD_INIT(tsk.run_list), \
135 .ioprio = 0, \
136 .time_slice = HZ, \
137 .tasks = LIST_HEAD_INIT(tsk.tasks), \
138 .ptrace_children= LIST_HEAD_INIT(tsk.ptrace_children), \
139 .ptrace_list = LIST_HEAD_INIT(tsk.ptrace_list), \
140 .real_parent = &tsk, \
141 .parent = &tsk, \
142 .children = LIST_HEAD_INIT(tsk.children), \
143 .sibling = LIST_HEAD_INIT(tsk.sibling), \
144 .group_leader = &tsk, \
145 .group_info = &init_groups, \
146 .cap_effective = CAP_INIT_EFF_SET, \
147 .cap_inheritable = CAP_INIT_INH_SET, \
148 .cap_permitted = CAP_FULL_SET, \
149 .keep_capabilities = 0, \
150 .user = INIT_USER, \
151 .comm = "swapper", \
152 .thread = INIT_THREAD, \
153 .fs = &init_fs, \
154 .files = &init_files, \
155 .signal = &init_signals, \
156 .sighand = &init_sighand, \
157 .nsproxy = &init_nsproxy, \
158 .pending = { \
159 .list = LIST_HEAD_INIT(tsk.pending.list), \
160 .signal = {{0}}}, \
161 .blocked = {{0}}, \
162 .alloc_lock = __SPIN_LOCK_UNLOCKED(tsk.alloc_lock), \
163 .journal_info = NULL, \
164 .cpu_timers = INIT_CPU_TIMERS(tsk.cpu_timers), \
165 .fs_excl = ATOMIC_INIT(0), \
166 .pi_lock = __SPIN_LOCK_UNLOCKED(tsk.pi_lock), \
167 .pids = { \
168 [PIDTYPE_PID] = INIT_PID_LINK(PIDTYPE_PID), \
169 [PIDTYPE_PGID] = INIT_PID_LINK(PIDTYPE_PGID), \
170 [PIDTYPE_SID] = INIT_PID_LINK(PIDTYPE_SID), \
171 }, \
172 INIT_TRACE_IRQFLAGS \
173 INIT_LOCKDEP \
174}
175
176
177#define INIT_CPU_TIMERS(cpu_timers) \
178{ \
179 LIST_HEAD_INIT(cpu_timers[0]), \
180 LIST_HEAD_INIT(cpu_timers[1]), \
181 LIST_HEAD_INIT(cpu_timers[2]), \
182}
183
184
185#endif