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 = 1, \
69 .tty_old_pgrp = 0, \
70 { .__session = 1}, \
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}
88
89extern struct group_info init_groups;
90
91/*
92 * INIT_TASK is used to set up the first task table, touch at
93 * your own risk!. Base=0, limit=0x1fffff (=2MB)
94 */
95#define INIT_TASK(tsk) \
96{ \
97 .state = 0, \
98 .thread_info = &init_thread_info, \
99 .usage = ATOMIC_INIT(2), \
100 .flags = 0, \
101 .lock_depth = -1, \
102 .prio = MAX_PRIO-20, \
103 .static_prio = MAX_PRIO-20, \
104 .normal_prio = MAX_PRIO-20, \
105 .policy = SCHED_NORMAL, \
106 .cpus_allowed = CPU_MASK_ALL, \
107 .mm = NULL, \
108 .active_mm = &init_mm, \
109 .run_list = LIST_HEAD_INIT(tsk.run_list), \
110 .ioprio = 0, \
111 .time_slice = HZ, \
112 .tasks = LIST_HEAD_INIT(tsk.tasks), \
113 .ptrace_children= LIST_HEAD_INIT(tsk.ptrace_children), \
114 .ptrace_list = LIST_HEAD_INIT(tsk.ptrace_list), \
115 .real_parent = &tsk, \
116 .parent = &tsk, \
117 .children = LIST_HEAD_INIT(tsk.children), \
118 .sibling = LIST_HEAD_INIT(tsk.sibling), \
119 .group_leader = &tsk, \
120 .group_info = &init_groups, \
121 .cap_effective = CAP_INIT_EFF_SET, \
122 .cap_inheritable = CAP_INIT_INH_SET, \
123 .cap_permitted = CAP_FULL_SET, \
124 .keep_capabilities = 0, \
125 .user = INIT_USER, \
126 .comm = "swapper", \
127 .thread = INIT_THREAD, \
128 .fs = &init_fs, \
129 .files = &init_files, \
130 .signal = &init_signals, \
131 .sighand = &init_sighand, \
132 .nsproxy = &init_nsproxy, \
133 .pending = { \
134 .list = LIST_HEAD_INIT(tsk.pending.list), \
135 .signal = {{0}}}, \
136 .blocked = {{0}}, \
137 .alloc_lock = __SPIN_LOCK_UNLOCKED(tsk.alloc_lock), \
138 .journal_info = NULL, \
139 .cpu_timers = INIT_CPU_TIMERS(tsk.cpu_timers), \
140 .fs_excl = ATOMIC_INIT(0), \
141 .pi_lock = SPIN_LOCK_UNLOCKED, \
142 INIT_TRACE_IRQFLAGS \
143 INIT_LOCKDEP \
144}
145
146
147#define INIT_CPU_TIMERS(cpu_timers) \
148{ \
149 LIST_HEAD_INIT(cpu_timers[0]), \
150 LIST_HEAD_INIT(cpu_timers[1]), \
151 LIST_HEAD_INIT(cpu_timers[2]), \
152}
153
154
155#endif