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
11#define INIT_FDTABLE \
12{ \
13 .max_fds = NR_OPEN_DEFAULT, \
14 .max_fdset = EMBEDDED_FD_SET_SIZE, \
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 .free_files = NULL, \
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 = 1, \
70 .session = 1, \
71}
72
73extern struct nsproxy init_nsproxy;
74#define INIT_NSPROXY(nsproxy) { \
75 .count = ATOMIC_INIT(1), \
76 .nslock = SPIN_LOCK_UNLOCKED, \
77 .uts_ns = &init_uts_ns, \
78 .namespace = NULL, \
79 INIT_IPC_NS(ipc_ns) \
80}
81
82#define INIT_SIGHAND(sighand) { \
83 .count = ATOMIC_INIT(1), \
84 .action = { { { .sa_handler = NULL, } }, }, \
85 .siglock = __SPIN_LOCK_UNLOCKED(sighand.siglock), \
86}
87
88extern struct group_info init_groups;
89
90/*
91 * INIT_TASK is used to set up the first task table, touch at
92 * your own risk!. Base=0, limit=0x1fffff (=2MB)
93 */
94#define INIT_TASK(tsk) \
95{ \
96 .state = 0, \
97 .thread_info = &init_thread_info, \
98 .usage = ATOMIC_INIT(2), \
99 .flags = 0, \
100 .lock_depth = -1, \
101 .prio = MAX_PRIO-20, \
102 .static_prio = MAX_PRIO-20, \
103 .normal_prio = MAX_PRIO-20, \
104 .policy = SCHED_NORMAL, \
105 .cpus_allowed = CPU_MASK_ALL, \
106 .mm = NULL, \
107 .active_mm = &init_mm, \
108 .run_list = LIST_HEAD_INIT(tsk.run_list), \
109 .ioprio = 0, \
110 .time_slice = HZ, \
111 .tasks = LIST_HEAD_INIT(tsk.tasks), \
112 .ptrace_children= LIST_HEAD_INIT(tsk.ptrace_children), \
113 .ptrace_list = LIST_HEAD_INIT(tsk.ptrace_list), \
114 .real_parent = &tsk, \
115 .parent = &tsk, \
116 .children = LIST_HEAD_INIT(tsk.children), \
117 .sibling = LIST_HEAD_INIT(tsk.sibling), \
118 .group_leader = &tsk, \
119 .group_info = &init_groups, \
120 .cap_effective = CAP_INIT_EFF_SET, \
121 .cap_inheritable = CAP_INIT_INH_SET, \
122 .cap_permitted = CAP_FULL_SET, \
123 .keep_capabilities = 0, \
124 .user = INIT_USER, \
125 .comm = "swapper", \
126 .thread = INIT_THREAD, \
127 .fs = &init_fs, \
128 .files = &init_files, \
129 .signal = &init_signals, \
130 .sighand = &init_sighand, \
131 .nsproxy = &init_nsproxy, \
132 .pending = { \
133 .list = LIST_HEAD_INIT(tsk.pending.list), \
134 .signal = {{0}}}, \
135 .blocked = {{0}}, \
136 .alloc_lock = __SPIN_LOCK_UNLOCKED(tsk.alloc_lock), \
137 .journal_info = NULL, \
138 .cpu_timers = INIT_CPU_TIMERS(tsk.cpu_timers), \
139 .fs_excl = ATOMIC_INIT(0), \
140 .pi_lock = SPIN_LOCK_UNLOCKED, \
141 INIT_TRACE_IRQFLAGS \
142 INIT_LOCKDEP \
143}
144
145
146#define INIT_CPU_TIMERS(cpu_timers) \
147{ \
148 LIST_HEAD_INIT(cpu_timers[0]), \
149 LIST_HEAD_INIT(cpu_timers[1]), \
150 LIST_HEAD_INIT(cpu_timers[2]), \
151}
152
153
154#endif