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/fdtable.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 <linux/securebits.h>
13#include <net/net_namespace.h>
14
15#define INIT_FDTABLE \
16{ \
17 .max_fds = NR_OPEN_DEFAULT, \
18 .fd = &init_files.fd_array[0], \
19 .close_on_exec = (fd_set *)&init_files.close_on_exec_init, \
20 .open_fds = (fd_set *)&init_files.open_fds_init, \
21 .rcu = RCU_HEAD_INIT, \
22 .next = NULL, \
23}
24
25#define INIT_FILES \
26{ \
27 .count = ATOMIC_INIT(1), \
28 .fdt = &init_files.fdtab, \
29 .fdtab = INIT_FDTABLE, \
30 .file_lock = __SPIN_LOCK_UNLOCKED(init_task.file_lock), \
31 .next_fd = 0, \
32 .close_on_exec_init = { { 0, } }, \
33 .open_fds_init = { { 0, } }, \
34 .fd_array = { NULL, } \
35}
36
37#define INIT_KIOCTX(name, which_mm) \
38{ \
39 .users = ATOMIC_INIT(1), \
40 .dead = 0, \
41 .mm = &which_mm, \
42 .user_id = 0, \
43 .next = NULL, \
44 .wait = __WAIT_QUEUE_HEAD_INITIALIZER(name.wait), \
45 .ctx_lock = __SPIN_LOCK_UNLOCKED(name.ctx_lock), \
46 .reqs_active = 0U, \
47 .max_reqs = ~0U, \
48}
49
50#define INIT_MM(name) \
51{ \
52 .mm_rb = RB_ROOT, \
53 .pgd = swapper_pg_dir, \
54 .mm_users = ATOMIC_INIT(2), \
55 .mm_count = ATOMIC_INIT(1), \
56 .mmap_sem = __RWSEM_INITIALIZER(name.mmap_sem), \
57 .page_table_lock = __SPIN_LOCK_UNLOCKED(name.page_table_lock), \
58 .mmlist = LIST_HEAD_INIT(name.mmlist), \
59 .cpu_vm_mask = CPU_MASK_ALL, \
60}
61
62#define INIT_SIGNALS(sig) { \
63 .count = ATOMIC_INIT(1), \
64 .wait_chldexit = __WAIT_QUEUE_HEAD_INITIALIZER(sig.wait_chldexit),\
65 .shared_pending = { \
66 .list = LIST_HEAD_INIT(sig.shared_pending.list), \
67 .signal = {{0}}}, \
68 .posix_timers = LIST_HEAD_INIT(sig.posix_timers), \
69 .cpu_timers = INIT_CPU_TIMERS(sig.cpu_timers), \
70 .rlim = INIT_RLIMITS, \
71}
72
73extern struct nsproxy init_nsproxy;
74#define INIT_NSPROXY(nsproxy) { \
75 .pid_ns = &init_pid_ns, \
76 .count = ATOMIC_INIT(1), \
77 .uts_ns = &init_uts_ns, \
78 .mnt_ns = NULL, \
79 INIT_NET_NS(net_ns) \
80 INIT_IPC_NS(ipc_ns) \
81 .user_ns = &init_user_ns, \
82}
83
84#define INIT_SIGHAND(sighand) { \
85 .count = ATOMIC_INIT(1), \
86 .action = { { { .sa_handler = NULL, } }, }, \
87 .siglock = __SPIN_LOCK_UNLOCKED(sighand.siglock), \
88 .signalfd_wqh = __WAIT_QUEUE_HEAD_INITIALIZER(sighand.signalfd_wqh), \
89}
90
91extern struct group_info init_groups;
92
93#define INIT_STRUCT_PID { \
94 .count = ATOMIC_INIT(1), \
95 .tasks = { \
96 { .first = &init_task.pids[PIDTYPE_PID].node }, \
97 { .first = &init_task.pids[PIDTYPE_PGID].node }, \
98 { .first = &init_task.pids[PIDTYPE_SID].node }, \
99 }, \
100 .rcu = RCU_HEAD_INIT, \
101 .level = 0, \
102 .numbers = { { \
103 .nr = 0, \
104 .ns = &init_pid_ns, \
105 .pid_chain = { .next = NULL, .pprev = NULL }, \
106 }, } \
107}
108
109#define INIT_PID_LINK(type) \
110{ \
111 .node = { \
112 .next = NULL, \
113 .pprev = &init_struct_pid.tasks[type].first, \
114 }, \
115 .pid = &init_struct_pid, \
116}
117
118#ifdef CONFIG_AUDITSYSCALL
119#define INIT_IDS \
120 .loginuid = -1, \
121 .sessionid = -1,
122#else
123#define INIT_IDS
124#endif
125
126#ifdef CONFIG_SECURITY_FILE_CAPABILITIES
127/*
128 * Because of the reduced scope of CAP_SETPCAP when filesystem
129 * capabilities are in effect, it is safe to allow CAP_SETPCAP to
130 * be available in the default configuration.
131 */
132# define CAP_INIT_BSET CAP_FULL_SET
133#else
134# define CAP_INIT_BSET CAP_INIT_EFF_SET
135#endif
136
137/*
138 * INIT_TASK is used to set up the first task table, touch at
139 * your own risk!. Base=0, limit=0x1fffff (=2MB)
140 */
141#define INIT_TASK(tsk) \
142{ \
143 .state = 0, \
144 .stack = &init_thread_info, \
145 .usage = ATOMIC_INIT(2), \
146 .flags = 0, \
147 .lock_depth = -1, \
148 .prio = MAX_PRIO-20, \
149 .static_prio = MAX_PRIO-20, \
150 .normal_prio = MAX_PRIO-20, \
151 .policy = SCHED_NORMAL, \
152 .cpus_allowed = CPU_MASK_ALL, \
153 .mm = NULL, \
154 .active_mm = &init_mm, \
155 .se = { \
156 .group_node = LIST_HEAD_INIT(tsk.se.group_node), \
157 }, \
158 .rt = { \
159 .run_list = LIST_HEAD_INIT(tsk.rt.run_list), \
160 .time_slice = HZ, \
161 .nr_cpus_allowed = NR_CPUS, \
162 }, \
163 .tasks = LIST_HEAD_INIT(tsk.tasks), \
164 .ptrace_children= LIST_HEAD_INIT(tsk.ptrace_children), \
165 .ptrace_list = LIST_HEAD_INIT(tsk.ptrace_list), \
166 .real_parent = &tsk, \
167 .parent = &tsk, \
168 .children = LIST_HEAD_INIT(tsk.children), \
169 .sibling = LIST_HEAD_INIT(tsk.sibling), \
170 .group_leader = &tsk, \
171 .group_info = &init_groups, \
172 .cap_effective = CAP_INIT_EFF_SET, \
173 .cap_inheritable = CAP_INIT_INH_SET, \
174 .cap_permitted = CAP_FULL_SET, \
175 .cap_bset = CAP_INIT_BSET, \
176 .securebits = SECUREBITS_DEFAULT, \
177 .user = INIT_USER, \
178 .comm = "swapper", \
179 .thread = INIT_THREAD, \
180 .fs = &init_fs, \
181 .files = &init_files, \
182 .signal = &init_signals, \
183 .sighand = &init_sighand, \
184 .nsproxy = &init_nsproxy, \
185 .pending = { \
186 .list = LIST_HEAD_INIT(tsk.pending.list), \
187 .signal = {{0}}}, \
188 .blocked = {{0}}, \
189 .alloc_lock = __SPIN_LOCK_UNLOCKED(tsk.alloc_lock), \
190 .journal_info = NULL, \
191 .cpu_timers = INIT_CPU_TIMERS(tsk.cpu_timers), \
192 .fs_excl = ATOMIC_INIT(0), \
193 .pi_lock = __SPIN_LOCK_UNLOCKED(tsk.pi_lock), \
194 .pids = { \
195 [PIDTYPE_PID] = INIT_PID_LINK(PIDTYPE_PID), \
196 [PIDTYPE_PGID] = INIT_PID_LINK(PIDTYPE_PGID), \
197 [PIDTYPE_SID] = INIT_PID_LINK(PIDTYPE_SID), \
198 }, \
199 .dirties = INIT_PROP_LOCAL_SINGLE(dirties), \
200 INIT_IDS \
201 INIT_TRACE_IRQFLAGS \
202 INIT_LOCKDEP \
203}
204
205
206#define INIT_CPU_TIMERS(cpu_timers) \
207{ \
208 LIST_HEAD_INIT(cpu_timers[0]), \
209 LIST_HEAD_INIT(cpu_timers[1]), \
210 LIST_HEAD_INIT(cpu_timers[2]), \
211}
212
213
214#endif