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/rcupdate.h>
5#include <linux/irqflags.h>
6#include <linux/utsname.h>
7#include <linux/lockdep.h>
8#include <linux/ipc.h>
9#include <linux/pid_namespace.h>
10#include <linux/user_namespace.h>
11#include <linux/securebits.h>
12#include <net/net_namespace.h>
13
14extern struct files_struct init_files;
15extern struct fs_struct init_fs;
16
17#define INIT_KIOCTX(name, which_mm) \
18{ \
19 .users = ATOMIC_INIT(1), \
20 .dead = 0, \
21 .mm = &which_mm, \
22 .user_id = 0, \
23 .next = NULL, \
24 .wait = __WAIT_QUEUE_HEAD_INITIALIZER(name.wait), \
25 .ctx_lock = __SPIN_LOCK_UNLOCKED(name.ctx_lock), \
26 .reqs_active = 0U, \
27 .max_reqs = ~0U, \
28}
29
30#define INIT_MM(name) \
31{ \
32 .mm_rb = RB_ROOT, \
33 .pgd = swapper_pg_dir, \
34 .mm_users = ATOMIC_INIT(2), \
35 .mm_count = ATOMIC_INIT(1), \
36 .mmap_sem = __RWSEM_INITIALIZER(name.mmap_sem), \
37 .page_table_lock = __SPIN_LOCK_UNLOCKED(name.page_table_lock), \
38 .mmlist = LIST_HEAD_INIT(name.mmlist), \
39 .cpu_vm_mask = CPU_MASK_ALL, \
40}
41
42#define INIT_SIGNALS(sig) { \
43 .count = ATOMIC_INIT(1), \
44 .wait_chldexit = __WAIT_QUEUE_HEAD_INITIALIZER(sig.wait_chldexit),\
45 .shared_pending = { \
46 .list = LIST_HEAD_INIT(sig.shared_pending.list), \
47 .signal = {{0}}}, \
48 .posix_timers = LIST_HEAD_INIT(sig.posix_timers), \
49 .cpu_timers = INIT_CPU_TIMERS(sig.cpu_timers), \
50 .rlim = INIT_RLIMITS, \
51 .cputime = { .totals = { \
52 .utime = cputime_zero, \
53 .stime = cputime_zero, \
54 .sum_exec_runtime = 0, \
55 .lock = __SPIN_LOCK_UNLOCKED(sig.cputime.totals.lock), \
56 }, }, \
57}
58
59extern struct nsproxy init_nsproxy;
60#define INIT_NSPROXY(nsproxy) { \
61 .pid_ns = &init_pid_ns, \
62 .count = ATOMIC_INIT(1), \
63 .uts_ns = &init_uts_ns, \
64 .mnt_ns = NULL, \
65 INIT_NET_NS(net_ns) \
66 INIT_IPC_NS(ipc_ns) \
67}
68
69#define INIT_SIGHAND(sighand) { \
70 .count = ATOMIC_INIT(1), \
71 .action = { { { .sa_handler = NULL, } }, }, \
72 .siglock = __SPIN_LOCK_UNLOCKED(sighand.siglock), \
73 .signalfd_wqh = __WAIT_QUEUE_HEAD_INITIALIZER(sighand.signalfd_wqh), \
74}
75
76extern struct group_info init_groups;
77
78#define INIT_STRUCT_PID { \
79 .count = ATOMIC_INIT(1), \
80 .tasks = { \
81 { .first = &init_task.pids[PIDTYPE_PID].node }, \
82 { .first = &init_task.pids[PIDTYPE_PGID].node }, \
83 { .first = &init_task.pids[PIDTYPE_SID].node }, \
84 }, \
85 .rcu = RCU_HEAD_INIT, \
86 .level = 0, \
87 .numbers = { { \
88 .nr = 0, \
89 .ns = &init_pid_ns, \
90 .pid_chain = { .next = NULL, .pprev = NULL }, \
91 }, } \
92}
93
94#define INIT_PID_LINK(type) \
95{ \
96 .node = { \
97 .next = NULL, \
98 .pprev = &init_struct_pid.tasks[type].first, \
99 }, \
100 .pid = &init_struct_pid, \
101}
102
103#ifdef CONFIG_AUDITSYSCALL
104#define INIT_IDS \
105 .loginuid = -1, \
106 .sessionid = -1,
107#else
108#define INIT_IDS
109#endif
110
111#ifdef CONFIG_SECURITY_FILE_CAPABILITIES
112/*
113 * Because of the reduced scope of CAP_SETPCAP when filesystem
114 * capabilities are in effect, it is safe to allow CAP_SETPCAP to
115 * be available in the default configuration.
116 */
117# define CAP_INIT_BSET CAP_FULL_SET
118#else
119# define CAP_INIT_BSET CAP_INIT_EFF_SET
120#endif
121
122extern struct cred init_cred;
123
124/*
125 * INIT_TASK is used to set up the first task table, touch at
126 * your own risk!. Base=0, limit=0x1fffff (=2MB)
127 */
128#define INIT_TASK(tsk) \
129{ \
130 .state = 0, \
131 .stack = &init_thread_info, \
132 .usage = ATOMIC_INIT(2), \
133 .flags = PF_KTHREAD, \
134 .lock_depth = -1, \
135 .prio = MAX_PRIO-20, \
136 .static_prio = MAX_PRIO-20, \
137 .normal_prio = MAX_PRIO-20, \
138 .policy = SCHED_NORMAL, \
139 .cpus_allowed = CPU_MASK_ALL, \
140 .mm = NULL, \
141 .active_mm = &init_mm, \
142 .se = { \
143 .group_node = LIST_HEAD_INIT(tsk.se.group_node), \
144 }, \
145 .rt = { \
146 .run_list = LIST_HEAD_INIT(tsk.rt.run_list), \
147 .time_slice = HZ, \
148 .nr_cpus_allowed = NR_CPUS, \
149 }, \
150 .tasks = LIST_HEAD_INIT(tsk.tasks), \
151 .ptraced = LIST_HEAD_INIT(tsk.ptraced), \
152 .ptrace_entry = LIST_HEAD_INIT(tsk.ptrace_entry), \
153 .real_parent = &tsk, \
154 .parent = &tsk, \
155 .children = LIST_HEAD_INIT(tsk.children), \
156 .sibling = LIST_HEAD_INIT(tsk.sibling), \
157 .group_leader = &tsk, \
158 .real_cred = &init_cred, \
159 .cred = &init_cred, \
160 .cred_exec_mutex = \
161 __MUTEX_INITIALIZER(tsk.cred_exec_mutex), \
162 .comm = "swapper", \
163 .thread = INIT_THREAD, \
164 .fs = &init_fs, \
165 .files = &init_files, \
166 .signal = &init_signals, \
167 .sighand = &init_sighand, \
168 .nsproxy = &init_nsproxy, \
169 .pending = { \
170 .list = LIST_HEAD_INIT(tsk.pending.list), \
171 .signal = {{0}}}, \
172 .blocked = {{0}}, \
173 .alloc_lock = __SPIN_LOCK_UNLOCKED(tsk.alloc_lock), \
174 .journal_info = NULL, \
175 .cpu_timers = INIT_CPU_TIMERS(tsk.cpu_timers), \
176 .fs_excl = ATOMIC_INIT(0), \
177 .pi_lock = __SPIN_LOCK_UNLOCKED(tsk.pi_lock), \
178 .timer_slack_ns = 50000, /* 50 usec default slack */ \
179 .pids = { \
180 [PIDTYPE_PID] = INIT_PID_LINK(PIDTYPE_PID), \
181 [PIDTYPE_PGID] = INIT_PID_LINK(PIDTYPE_PGID), \
182 [PIDTYPE_SID] = INIT_PID_LINK(PIDTYPE_SID), \
183 }, \
184 .dirties = INIT_PROP_LOCAL_SINGLE(dirties), \
185 INIT_IDS \
186 INIT_TRACE_IRQFLAGS \
187 INIT_LOCKDEP \
188}
189
190
191#define INIT_CPU_TIMERS(cpu_timers) \
192{ \
193 LIST_HEAD_INIT(cpu_timers[0]), \
194 LIST_HEAD_INIT(cpu_timers[1]), \
195 LIST_HEAD_INIT(cpu_timers[2]), \
196}
197
198
199#endif