| blob | 1f74e1d7415fe9042e2e71467b40e4a56184ffa8 |
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 }
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 }
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 }
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 }
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 }
117 #ifdef CONFIG_AUDITSYSCALL
118 #define INIT_IDS \
119 .loginuid = -1, \
120 .sessionid = -1,
121 #else
122 #define INIT_IDS
123 #endif
125 #ifdef CONFIG_SECURITY_FILE_CAPABILITIES
126 /*
127 * Because of the reduced scope of CAP_SETPCAP when filesystem
128 * capabilities are in effect, it is safe to allow CAP_SETPCAP to
129 * be available in the default configuration.
130 */
131 # define CAP_INIT_BSET CAP_FULL_SET
132 #else
133 # define CAP_INIT_BSET CAP_INIT_EFF_SET
134 #endif
136 /*
137 * INIT_TASK is used to set up the first task table, touch at
138 * your own risk!. Base=0, limit=0x1fffff (=2MB)
139 */
140 #define INIT_TASK(tsk) \
141 { \
142 .state = 0, \
143 .stack = &init_thread_info, \
144 .usage = ATOMIC_INIT(2), \
145 .flags = 0, \
146 .lock_depth = -1, \
147 .prio = MAX_PRIO-20, \
148 .static_prio = MAX_PRIO-20, \
149 .normal_prio = MAX_PRIO-20, \
150 .policy = SCHED_NORMAL, \
151 .cpus_allowed = CPU_MASK_ALL, \
152 .mm = NULL, \
153 .active_mm = &init_mm, \
154 .rt = { \
155 .run_list = LIST_HEAD_INIT(tsk.rt.run_list), \
156 .time_slice = HZ, \
157 .nr_cpus_allowed = NR_CPUS, \
158 }, \
159 .tasks = LIST_HEAD_INIT(tsk.tasks), \
160 .ptrace_children= LIST_HEAD_INIT(tsk.ptrace_children), \
161 .ptrace_list = LIST_HEAD_INIT(tsk.ptrace_list), \
162 .real_parent = &tsk, \
163 .parent = &tsk, \
164 .children = LIST_HEAD_INIT(tsk.children), \
165 .sibling = LIST_HEAD_INIT(tsk.sibling), \
166 .group_leader = &tsk, \
167 .group_info = &init_groups, \
168 .cap_effective = CAP_INIT_EFF_SET, \
169 .cap_inheritable = CAP_INIT_INH_SET, \
170 .cap_permitted = CAP_FULL_SET, \
171 .cap_bset = CAP_INIT_BSET, \
172 .keep_capabilities = 0, \
173 .user = INIT_USER, \
175 .thread = INIT_THREAD, \
176 .fs = &init_fs, \
177 .files = &init_files, \
178 .signal = &init_signals, \
179 .sighand = &init_sighand, \
180 .nsproxy = &init_nsproxy, \
181 .pending = { \
182 .list = LIST_HEAD_INIT(tsk.pending.list), \
183 .signal = {{0}}}, \
184 .blocked = {{0}}, \
185 .alloc_lock = __SPIN_LOCK_UNLOCKED(tsk.alloc_lock), \
186 .journal_info = NULL, \
187 .cpu_timers = INIT_CPU_TIMERS(tsk.cpu_timers), \
188 .fs_excl = ATOMIC_INIT(0), \
189 .pi_lock = __SPIN_LOCK_UNLOCKED(tsk.pi_lock), \
190 .pids = { \
191 [PIDTYPE_PID] = INIT_PID_LINK(PIDTYPE_PID), \
192 [PIDTYPE_PGID] = INIT_PID_LINK(PIDTYPE_PGID), \
193 [PIDTYPE_SID] = INIT_PID_LINK(PIDTYPE_SID), \
194 }, \
195 .dirties = INIT_PROP_LOCAL_SINGLE(dirties), \
196 INIT_IDS \
197 INIT_TRACE_IRQFLAGS \
198 INIT_LOCKDEP \
199 }
202 #define INIT_CPU_TIMERS(cpu_timers) \
203 { \
204 LIST_HEAD_INIT(cpu_timers[0]), \
205 LIST_HEAD_INIT(cpu_timers[1]), \
206 LIST_HEAD_INIT(cpu_timers[2]), \
207 }
210 #endif