init_task.h revision e4d919188554a77c798a267e098059bc9aa39726 
1#ifndef _LINUX__INIT_TASK_H
2#define _LINUX__INIT_TASK_H
3
4#include <linux/file.h>
5#include <linux/rcupdate.h>
6
7#define INIT_FDTABLE \
8{							\
9	.max_fds	= NR_OPEN_DEFAULT, 		\
10	.max_fdset	= EMBEDDED_FD_SET_SIZE,		\
11	.fd		= &init_files.fd_array[0], 	\
12	.close_on_exec	= (fd_set *)&init_files.close_on_exec_init, \
13	.open_fds	= (fd_set *)&init_files.open_fds_init, 	\
14	.rcu		= RCU_HEAD_INIT, 		\
15	.free_files	= NULL,		 		\
16	.next		= NULL,		 		\
17}
18
19#define INIT_FILES \
20{ 							\
21	.count		= ATOMIC_INIT(1), 		\
22	.fdt		= &init_files.fdtab, 		\
23	.fdtab		= INIT_FDTABLE,			\
24	.file_lock	= __SPIN_LOCK_UNLOCKED(init_task.file_lock), \
25	.next_fd	= 0, 				\
26	.close_on_exec_init = { { 0, } }, 		\
27	.open_fds_init	= { { 0, } }, 			\
28	.fd_array	= { NULL, } 			\
29}
30
31#define INIT_KIOCTX(name, which_mm) \
32{							\
33	.users		= ATOMIC_INIT(1),		\
34	.dead		= 0,				\
35	.mm		= &which_mm,			\
36	.user_id	= 0,				\
37	.next		= NULL,				\
38	.wait		= __WAIT_QUEUE_HEAD_INITIALIZER(name.wait), \
39	.ctx_lock	= __SPIN_LOCK_UNLOCKED(name.ctx_lock), \
40	.reqs_active	= 0U,				\
41	.max_reqs	= ~0U,				\
42}
43
44#define INIT_MM(name) \
45{			 					\
46	.mm_rb		= RB_ROOT,				\
47	.pgd		= swapper_pg_dir, 			\
48	.mm_users	= ATOMIC_INIT(2), 			\
49	.mm_count	= ATOMIC_INIT(1), 			\
50	.mmap_sem	= __RWSEM_INITIALIZER(name.mmap_sem),	\
51	.page_table_lock =  __SPIN_LOCK_UNLOCKED(name.page_table_lock),	\
52	.mmlist		= LIST_HEAD_INIT(name.mmlist),		\
53	.cpu_vm_mask	= CPU_MASK_ALL,				\
54}
55
56#define INIT_SIGNALS(sig) {	\
57	.count		= ATOMIC_INIT(1), 		\
58	.wait_chldexit	= __WAIT_QUEUE_HEAD_INITIALIZER(sig.wait_chldexit),\
59	.shared_pending	= { 				\
60		.list = LIST_HEAD_INIT(sig.shared_pending.list),	\
61		.signal =  {{0}}}, \
62	.posix_timers	 = LIST_HEAD_INIT(sig.posix_timers),		\
63	.cpu_timers	= INIT_CPU_TIMERS(sig.cpu_timers),		\
64	.rlim		= INIT_RLIMITS,					\
65	.pgrp		= 1,						\
66	.session	= 1,						\
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}
74
75extern struct group_info init_groups;
76
77/*
78 *  INIT_TASK is used to set up the first task table, touch at
79 * your own risk!. Base=0, limit=0x1fffff (=2MB)
80 */
81#define INIT_TASK(tsk)	\
82{									\
83	.state		= 0,						\
84	.thread_info	= &init_thread_info,				\
85	.usage		= ATOMIC_INIT(2),				\
86	.flags		= 0,						\
87	.lock_depth	= -1,						\
88	.prio		= MAX_PRIO-20,					\
89	.static_prio	= MAX_PRIO-20,					\
90	.normal_prio	= MAX_PRIO-20,					\
91	.policy		= SCHED_NORMAL,					\
92	.cpus_allowed	= CPU_MASK_ALL,					\
93	.mm		= NULL,						\
94	.active_mm	= &init_mm,					\
95	.run_list	= LIST_HEAD_INIT(tsk.run_list),			\
96	.ioprio		= 0,						\
97	.time_slice	= HZ,						\
98	.tasks		= LIST_HEAD_INIT(tsk.tasks),			\
99	.ptrace_children= LIST_HEAD_INIT(tsk.ptrace_children),		\
100	.ptrace_list	= LIST_HEAD_INIT(tsk.ptrace_list),		\
101	.real_parent	= &tsk,						\
102	.parent		= &tsk,						\
103	.children	= LIST_HEAD_INIT(tsk.children),			\
104	.sibling	= LIST_HEAD_INIT(tsk.sibling),			\
105	.group_leader	= &tsk,						\
106	.group_info	= &init_groups,					\
107	.cap_effective	= CAP_INIT_EFF_SET,				\
108	.cap_inheritable = CAP_INIT_INH_SET,				\
109	.cap_permitted	= CAP_FULL_SET,					\
110	.keep_capabilities = 0,						\
111	.user		= INIT_USER,					\
112	.comm		= "swapper",					\
113	.thread		= INIT_THREAD,					\
114	.fs		= &init_fs,					\
115	.files		= &init_files,					\
116	.signal		= &init_signals,				\
117	.sighand	= &init_sighand,				\
118	.pending	= {						\
119		.list = LIST_HEAD_INIT(tsk.pending.list),		\
120		.signal = {{0}}},					\
121	.blocked	= {{0}},					\
122	.alloc_lock	= __SPIN_LOCK_UNLOCKED(tsk.alloc_lock),		\
123	.journal_info	= NULL,						\
124	.cpu_timers	= INIT_CPU_TIMERS(tsk.cpu_timers),		\
125	.fs_excl	= ATOMIC_INIT(0),				\
126	.pi_lock	= SPIN_LOCK_UNLOCKED,				\
127}
128
129
130#define INIT_CPU_TIMERS(cpu_timers)					\
131{									\
132	LIST_HEAD_INIT(cpu_timers[0]),					\
133	LIST_HEAD_INIT(cpu_timers[1]),					\
134	LIST_HEAD_INIT(cpu_timers[2]),					\
135}
136
137
138#endif
139