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#include <net/net_namespace.h>
13
14#define INIT_FDTABLE \
15{ \
16 .max_fds = NR_OPEN_DEFAULT, \
17 .fd = &init_files.fd_array[0], \
18 .close_on_exec = (fd_set *)&init_files.close_on_exec_init, \
19 .open_fds = (fd_set *)&init_files.open_fds_init, \
20 .rcu = RCU_HEAD_INIT, \
21 .next = NULL, \
22}
23
24#define INIT_FILES \
25{ \
26 .count = ATOMIC_INIT(1), \
27 .fdt = &init_files.fdtab, \
28 .fdtab = INIT_FDTABLE, \
29 .file_lock = __SPIN_LOCK_UNLOCKED(init_task.file_lock), \
30 .next_fd = 0, \
31 .close_on_exec_init = { { 0, } }, \
32 .open_fds_init = { { 0, } }, \
33 .fd_array = { NULL, } \
34}
35
36#define INIT_KIOCTX(name, which_mm) \
37{ \
38 .users = ATOMIC_INIT(1), \
39 .dead = 0, \
40 .mm = &which_mm, \
41 .user_id = 0, \
42 .next = NULL, \
43 .wait = __WAIT_QUEUE_HEAD_INITIALIZER(name.wait), \
44 .ctx_lock = __SPIN_LOCK_UNLOCKED(name.ctx_lock), \
45 .reqs_active = 0U, \
46 .max_reqs = ~0U, \
47}
48
49#define INIT_MM(name) \
50{ \
51 .mm_rb = RB_ROOT, \
52 .pgd = swapper_pg_dir, \
53 .mm_users = ATOMIC_INIT(2), \
54 .mm_count = ATOMIC_INIT(1), \
55 .mmap_sem = __RWSEM_INITIALIZER(name.mmap_sem), \
56 .page_table_lock = __SPIN_LOCK_UNLOCKED(name.page_table_lock), \
57 .mmlist = LIST_HEAD_INIT(name.mmlist), \
58 .cpu_vm_mask = CPU_MASK_ALL, \
59}
60
61#define INIT_SIGNALS(sig) { \
62 .count = ATOMIC_INIT(1), \
63 .wait_chldexit = __WAIT_QUEUE_HEAD_INITIALIZER(sig.wait_chldexit),\
64 .shared_pending = { \
65 .list = LIST_HEAD_INIT(sig.shared_pending.list), \
66 .signal = {{0}}}, \
67 .posix_timers = LIST_HEAD_INIT(sig.posix_timers), \
68 .cpu_timers = INIT_CPU_TIMERS(sig.cpu_timers), \
69 .rlim = INIT_RLIMITS, \
70}
71
72extern struct nsproxy init_nsproxy;
73#define INIT_NSPROXY(nsproxy) { \
74 .pid_ns = &init_pid_ns, \
75 .count = ATOMIC_INIT(1), \
76 .uts_ns = &init_uts_ns, \
77 .mnt_ns = NULL, \
78 INIT_NET_NS(net_ns) \
79 INIT_IPC_NS(ipc_ns) \
80 .user_ns = &init_user_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_wqh = __WAIT_QUEUE_HEAD_INITIALIZER(sighand.signalfd_wqh), \
88}
89
90extern struct group_info init_groups;
91
92#define INIT_STRUCT_PID { \
93 .count = ATOMIC_INIT(1), \
94 .tasks = { \
95 { .first = &init_task.pids[PIDTYPE_PID].node }, \
96 { .first = &init_task.pids[PIDTYPE_PGID].node }, \
97 { .first = &init_task.pids[PIDTYPE_SID].node }, \
98 }, \
99 .rcu = RCU_HEAD_INIT, \
100 .level = 0, \
101 .numbers = { { \
102 .nr = 0, \
103 .ns = &init_pid_ns, \
104 .pid_chain = { .next = NULL, .pprev = NULL }, \
105 }, } \
106}
107
108#define INIT_PID_LINK(type) \
109{ \
110 .node = { \
111 .next = NULL, \
112 .pprev = &init_struct_pid.tasks[type].first, \
113 }, \
114 .pid = &init_struct_pid, \
115}
116
117/*
118 * INIT_TASK is used to set up the first task table, touch at
119 * your own risk!. Base=0, limit=0x1fffff (=2MB)
120 */
121#define INIT_TASK(tsk) \
122{ \
123 .state = 0, \
124 .stack = &init_thread_info, \
125 .usage = ATOMIC_INIT(2), \
126 .flags = 0, \
127 .lock_depth = -1, \
128 .prio = MAX_PRIO-20, \
129 .static_prio = MAX_PRIO-20, \
130 .normal_prio = MAX_PRIO-20, \
131 .policy = SCHED_NORMAL, \
132 .cpus_allowed = CPU_MASK_ALL, \
133 .mm = NULL, \
134 .active_mm = &init_mm, \
135 .run_list = LIST_HEAD_INIT(tsk.run_list), \
136 .ioprio = 0, \
137 .time_slice = HZ, \
138 .tasks = LIST_HEAD_INIT(tsk.tasks), \
139 .ptrace_children= LIST_HEAD_INIT(tsk.ptrace_children), \
140 .ptrace_list = LIST_HEAD_INIT(tsk.ptrace_list), \
141 .real_parent = &tsk, \
142 .parent = &tsk, \
143 .children = LIST_HEAD_INIT(tsk.children), \
144 .sibling = LIST_HEAD_INIT(tsk.sibling), \
145 .group_leader = &tsk, \
146 .group_info = &init_groups, \
147 .cap_effective = CAP_INIT_EFF_SET, \
148 .cap_inheritable = CAP_INIT_INH_SET, \
149 .cap_permitted = CAP_FULL_SET, \
150 .keep_capabilities = 0, \
151 .user = INIT_USER, \
152 .comm = "swapper", \
153 .thread = INIT_THREAD, \
154 .fs = &init_fs, \
155 .files = &init_files, \
156 .signal = &init_signals, \
157 .sighand = &init_sighand, \
158 .nsproxy = &init_nsproxy, \
159 .pending = { \
160 .list = LIST_HEAD_INIT(tsk.pending.list), \
161 .signal = {{0}}}, \
162 .blocked = {{0}}, \
163 .alloc_lock = __SPIN_LOCK_UNLOCKED(tsk.alloc_lock), \
164 .journal_info = NULL, \
165 .cpu_timers = INIT_CPU_TIMERS(tsk.cpu_timers), \
166 .fs_excl = ATOMIC_INIT(0), \
167 .pi_lock = __SPIN_LOCK_UNLOCKED(tsk.pi_lock), \
168 .pids = { \
169 [PIDTYPE_PID] = INIT_PID_LINK(PIDTYPE_PID), \
170 [PIDTYPE_PGID] = INIT_PID_LINK(PIDTYPE_PGID), \
171 [PIDTYPE_SID] = INIT_PID_LINK(PIDTYPE_SID), \
172 }, \
173 .dirties = INIT_PROP_LOCAL_SINGLE(dirties), \
174 INIT_TRACE_IRQFLAGS \
175 INIT_LOCKDEP \
176}
177
178
179#define INIT_CPU_TIMERS(cpu_timers) \
180{ \
181 LIST_HEAD_INIT(cpu_timers[0]), \
182 LIST_HEAD_INIT(cpu_timers[1]), \
183 LIST_HEAD_INIT(cpu_timers[2]), \
184}
185
186
187#endif