| blob | 513bc3e489f018f33495867568d708a9335b0c06 |
1 #ifndef _LINUX__INIT_TASK_H
2 #define _LINUX__INIT_TASK_H
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>
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 }
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 }
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 }
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 }
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 .pgrp = 0, \
71 .tty_old_pgrp = NULL, \
72 { .__session = 0}, \
73 }
76 #define INIT_NSPROXY(nsproxy) { \
77 .pid_ns = &init_pid_ns, \
78 .count = ATOMIC_INIT(1), \
79 .nslock = __SPIN_LOCK_UNLOCKED(nsproxy.nslock), \
80 .uts_ns = &init_uts_ns, \
81 .mnt_ns = NULL, \
82 INIT_NET_NS(net_ns) \
83 INIT_IPC_NS(ipc_ns) \
84 .user_ns = &init_user_ns, \
85 }
87 #define INIT_SIGHAND(sighand) { \
88 .count = ATOMIC_INIT(1), \
89 .action = { { { .sa_handler = NULL, } }, }, \
90 .siglock = __SPIN_LOCK_UNLOCKED(sighand.siglock), \
91 .signalfd_wqh = __WAIT_QUEUE_HEAD_INITIALIZER(sighand.signalfd_wqh), \
92 }
96 #define INIT_STRUCT_PID { \
97 .count = ATOMIC_INIT(1), \
98 .nr = 0, \
100 .pid_chain = { .next = NULL, .pprev = NULL }, \
101 .tasks = { \
102 { .first = &init_task.pids[PIDTYPE_PID].node }, \
103 { .first = &init_task.pids[PIDTYPE_PGID].node }, \
104 { .first = &init_task.pids[PIDTYPE_SID].node }, \
105 }, \
106 .rcu = RCU_HEAD_INIT, \
107 }
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 }
118 /*
119 * INIT_TASK is used to set up the first task table, touch at
120 * your own risk!. Base=0, limit=0x1fffff (=2MB)
121 */
122 #define INIT_TASK(tsk) \
123 { \
124 .state = 0, \
125 .stack = &init_thread_info, \
126 .usage = ATOMIC_INIT(2), \
127 .flags = 0, \
128 .lock_depth = -1, \
129 .prio = MAX_PRIO-20, \
130 .static_prio = MAX_PRIO-20, \
131 .normal_prio = MAX_PRIO-20, \
132 .policy = SCHED_NORMAL, \
133 .cpus_allowed = CPU_MASK_ALL, \
134 .mm = NULL, \
135 .active_mm = &init_mm, \
136 .run_list = LIST_HEAD_INIT(tsk.run_list), \
137 .ioprio = 0, \
138 .time_slice = HZ, \
139 .tasks = LIST_HEAD_INIT(tsk.tasks), \
140 .ptrace_children= LIST_HEAD_INIT(tsk.ptrace_children), \
141 .ptrace_list = LIST_HEAD_INIT(tsk.ptrace_list), \
142 .real_parent = &tsk, \
143 .parent = &tsk, \
144 .children = LIST_HEAD_INIT(tsk.children), \
145 .sibling = LIST_HEAD_INIT(tsk.sibling), \
146 .group_leader = &tsk, \
147 .group_info = &init_groups, \
148 .cap_effective = CAP_INIT_EFF_SET, \
149 .cap_inheritable = CAP_INIT_INH_SET, \
150 .cap_permitted = CAP_FULL_SET, \
151 .keep_capabilities = 0, \
152 .user = INIT_USER, \
154 .thread = INIT_THREAD, \
155 .fs = &init_fs, \
156 .files = &init_files, \
157 .signal = &init_signals, \
158 .sighand = &init_sighand, \
159 .nsproxy = &init_nsproxy, \
160 .pending = { \
161 .list = LIST_HEAD_INIT(tsk.pending.list), \
162 .signal = {{0}}}, \
163 .blocked = {{0}}, \
164 .alloc_lock = __SPIN_LOCK_UNLOCKED(tsk.alloc_lock), \
165 .journal_info = NULL, \
166 .cpu_timers = INIT_CPU_TIMERS(tsk.cpu_timers), \
167 .fs_excl = ATOMIC_INIT(0), \
168 .pi_lock = __SPIN_LOCK_UNLOCKED(tsk.pi_lock), \
169 .pids = { \
170 [PIDTYPE_PID] = INIT_PID_LINK(PIDTYPE_PID), \
171 [PIDTYPE_PGID] = INIT_PID_LINK(PIDTYPE_PGID), \
172 [PIDTYPE_SID] = INIT_PID_LINK(PIDTYPE_SID), \
173 }, \
174 INIT_TRACE_IRQFLAGS \
175 INIT_LOCKDEP \
176 }
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 }
187 #endif