signal/timer/event: signalfd core
[linux-2.6.git] / include / linux / init_task.h
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 #include <linux/pid_namespace.h>
11
12 #define INIT_FDTABLE \
13 {                                                       \
14         .max_fds        = NR_OPEN_DEFAULT,              \
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         .next           = NULL,                         \
20 }
21
22 #define INIT_FILES \
23 {                                                       \
24         .count          = ATOMIC_INIT(1),               \
25         .fdt            = &init_files.fdtab,            \
26         .fdtab          = INIT_FDTABLE,                 \
27         .file_lock      = __SPIN_LOCK_UNLOCKED(init_task.file_lock), \
28         .next_fd        = 0,                            \
29         .close_on_exec_init = { { 0, } },               \
30         .open_fds_init  = { { 0, } },                   \
31         .fd_array       = { NULL, }                     \
32 }
33
34 #define INIT_KIOCTX(name, which_mm) \
35 {                                                       \
36         .users          = ATOMIC_INIT(1),               \
37         .dead           = 0,                            \
38         .mm             = &which_mm,                    \
39         .user_id        = 0,                            \
40         .next           = NULL,                         \
41         .wait           = __WAIT_QUEUE_HEAD_INITIALIZER(name.wait), \
42         .ctx_lock       = __SPIN_LOCK_UNLOCKED(name.ctx_lock), \
43         .reqs_active    = 0U,                           \
44         .max_reqs       = ~0U,                          \
45 }
46
47 #define INIT_MM(name) \
48 {                                                               \
49         .mm_rb          = RB_ROOT,                              \
50         .pgd            = swapper_pg_dir,                       \
51         .mm_users       = ATOMIC_INIT(2),                       \
52         .mm_count       = ATOMIC_INIT(1),                       \
53         .mmap_sem       = __RWSEM_INITIALIZER(name.mmap_sem),   \
54         .page_table_lock =  __SPIN_LOCK_UNLOCKED(name.page_table_lock), \
55         .mmlist         = LIST_HEAD_INIT(name.mmlist),          \
56         .cpu_vm_mask    = CPU_MASK_ALL,                         \
57 }
58
59 #define INIT_SIGNALS(sig) {                                             \
60         .count          = ATOMIC_INIT(1),                               \
61         .wait_chldexit  = __WAIT_QUEUE_HEAD_INITIALIZER(sig.wait_chldexit),\
62         .shared_pending = {                                             \
63                 .list = LIST_HEAD_INIT(sig.shared_pending.list),        \
64                 .signal =  {{0}}},                                      \
65         .posix_timers    = LIST_HEAD_INIT(sig.posix_timers),            \
66         .cpu_timers     = INIT_CPU_TIMERS(sig.cpu_timers),              \
67         .rlim           = INIT_RLIMITS,                                 \
68         .pgrp           = 0,                                            \
69         .tty_old_pgrp   = NULL,                                         \
70         { .__session      = 0},                                         \
71 }
72
73 extern struct nsproxy init_nsproxy;
74 #define INIT_NSPROXY(nsproxy) {                                         \
75         .pid_ns         = &init_pid_ns,                                 \
76         .count          = ATOMIC_INIT(1),                               \
77         .nslock         = __SPIN_LOCK_UNLOCKED(nsproxy.nslock),         \
78         .uts_ns         = &init_uts_ns,                                 \
79         .mnt_ns         = NULL,                                         \
80         INIT_IPC_NS(ipc_ns)                                             \
81 }
82
83 #define INIT_SIGHAND(sighand) {                                         \
84         .count          = ATOMIC_INIT(1),                               \
85         .action         = { { { .sa_handler = NULL, } }, },             \
86         .siglock        = __SPIN_LOCK_UNLOCKED(sighand.siglock),        \
87         .signalfd_list  = LIST_HEAD_INIT(sighand.signalfd_list),        \
88 }
89
90 extern struct group_info init_groups;
91
92 #define INIT_STRUCT_PID {                                               \
93         .count          = ATOMIC_INIT(1),                               \
94         .nr             = 0,                                            \
95         /* Don't put this struct pid in pid_hash */                     \
96         .pid_chain      = { .next = NULL, .pprev = NULL },              \
97         .tasks          = {                                             \
98                 { .first = &init_task.pids[PIDTYPE_PID].node },         \
99                 { .first = &init_task.pids[PIDTYPE_PGID].node },        \
100                 { .first = &init_task.pids[PIDTYPE_SID].node },         \
101         },                                                              \
102         .rcu            = RCU_HEAD_INIT,                                \
103 }
104
105 #define INIT_PID_LINK(type)                                     \
106 {                                                               \
107         .node = {                                               \
108                 .next = NULL,                                   \
109                 .pprev = &init_struct_pid.tasks[type].first,    \
110         },                                                      \
111         .pid = &init_struct_pid,                                \
112 }
113
114 /*
115  *  INIT_TASK is used to set up the first task table, touch at
116  * your own risk!. Base=0, limit=0x1fffff (=2MB)
117  */
118 #define INIT_TASK(tsk)  \
119 {                                                                       \
120         .state          = 0,                                            \
121         .stack          = &init_thread_info,                            \
122         .usage          = ATOMIC_INIT(2),                               \
123         .flags          = 0,                                            \
124         .lock_depth     = -1,                                           \
125         .prio           = MAX_PRIO-20,                                  \
126         .static_prio    = MAX_PRIO-20,                                  \
127         .normal_prio    = MAX_PRIO-20,                                  \
128         .policy         = SCHED_NORMAL,                                 \
129         .cpus_allowed   = CPU_MASK_ALL,                                 \
130         .mm             = NULL,                                         \
131         .active_mm      = &init_mm,                                     \
132         .run_list       = LIST_HEAD_INIT(tsk.run_list),                 \
133         .ioprio         = 0,                                            \
134         .time_slice     = HZ,                                           \
135         .tasks          = LIST_HEAD_INIT(tsk.tasks),                    \
136         .ptrace_children= LIST_HEAD_INIT(tsk.ptrace_children),          \
137         .ptrace_list    = LIST_HEAD_INIT(tsk.ptrace_list),              \
138         .real_parent    = &tsk,                                         \
139         .parent         = &tsk,                                         \
140         .children       = LIST_HEAD_INIT(tsk.children),                 \
141         .sibling        = LIST_HEAD_INIT(tsk.sibling),                  \
142         .group_leader   = &tsk,                                         \
143         .group_info     = &init_groups,                                 \
144         .cap_effective  = CAP_INIT_EFF_SET,                             \
145         .cap_inheritable = CAP_INIT_INH_SET,                            \
146         .cap_permitted  = CAP_FULL_SET,                                 \
147         .keep_capabilities = 0,                                         \
148         .user           = INIT_USER,                                    \
149         .comm           = "swapper",                                    \
150         .thread         = INIT_THREAD,                                  \
151         .fs             = &init_fs,                                     \
152         .files          = &init_files,                                  \
153         .signal         = &init_signals,                                \
154         .sighand        = &init_sighand,                                \
155         .nsproxy        = &init_nsproxy,                                \
156         .pending        = {                                             \
157                 .list = LIST_HEAD_INIT(tsk.pending.list),               \
158                 .signal = {{0}}},                                       \
159         .blocked        = {{0}},                                        \
160         .alloc_lock     = __SPIN_LOCK_UNLOCKED(tsk.alloc_lock),         \
161         .journal_info   = NULL,                                         \
162         .cpu_timers     = INIT_CPU_TIMERS(tsk.cpu_timers),              \
163         .fs_excl        = ATOMIC_INIT(0),                               \
164         .pi_lock        = __SPIN_LOCK_UNLOCKED(tsk.pi_lock),            \
165         .pids = {                                                       \
166                 [PIDTYPE_PID]  = INIT_PID_LINK(PIDTYPE_PID),            \
167                 [PIDTYPE_PGID] = INIT_PID_LINK(PIDTYPE_PGID),           \
168                 [PIDTYPE_SID]  = INIT_PID_LINK(PIDTYPE_SID),            \
169         },                                                              \
170         INIT_TRACE_IRQFLAGS                                             \
171         INIT_LOCKDEP                                                    \
172 }
173
174
175 #define INIT_CPU_TIMERS(cpu_timers)                                     \
176 {                                                                       \
177         LIST_HEAD_INIT(cpu_timers[0]),                                  \
178         LIST_HEAD_INIT(cpu_timers[1]),                                  \
179         LIST_HEAD_INIT(cpu_timers[2]),                                  \
180 }
181
182
183 #endif