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