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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef _LINUX__INIT_TASK_H
2#define _LINUX__INIT_TASK_H
3
4#include <linux/file.h>
Dipankar Sarmaab2af1f2005-09-09 13:04:13 -07005#include <linux/rcupdate.h>
Ingo Molnarde30a2b2006-07-03 00:24:42 -07006#include <linux/irqflags.h>
Serge E. Hallyn4865ecf2006-10-02 02:18:14 -07007#include <linux/utsname.h>
Ingo Molnarfbb9ce952006-07-03 00:24:50 -07008#include <linux/lockdep.h>
Kirill Korotaev73ea4132006-10-02 02:18:20 -07009#include <linux/ipc.h>
Cedric Le Goater9a575a92006-12-08 02:37:59 -080010#include <linux/pid_namespace.h>
Cedric Le Goateracce2922007-07-15 23:40:59 -070011#include <linux/user_namespace.h>
Eric W. Biederman772698f2007-09-12 11:55:17 +020012#include <net/net_namespace.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070013
Dipankar Sarmabadf1662005-09-09 13:04:10 -070014#define INIT_FDTABLE \
15{ \
Linus Torvalds1da177e2005-04-16 15:20:36 -070016 .max_fds = NR_OPEN_DEFAULT, \
Linus Torvalds1da177e2005-04-16 15:20:36 -070017 .fd = &init_files.fd_array[0], \
Eric Dumazet0c9e63f2006-03-23 03:00:12 -080018 .close_on_exec = (fd_set *)&init_files.close_on_exec_init, \
19 .open_fds = (fd_set *)&init_files.open_fds_init, \
Dipankar Sarmaab2af1f2005-09-09 13:04:13 -070020 .rcu = RCU_HEAD_INIT, \
Dipankar Sarmaab2af1f2005-09-09 13:04:13 -070021 .next = NULL, \
Dipankar Sarmabadf1662005-09-09 13:04:10 -070022}
23
24#define INIT_FILES \
25{ \
26 .count = ATOMIC_INIT(1), \
Dipankar Sarmaab2af1f2005-09-09 13:04:13 -070027 .fdt = &init_files.fdtab, \
Dipankar Sarmabadf1662005-09-09 13:04:10 -070028 .fdtab = INIT_FDTABLE, \
Ingo Molnare4d91912006-07-03 00:24:34 -070029 .file_lock = __SPIN_LOCK_UNLOCKED(init_task.file_lock), \
Eric Dumazet0c9e63f2006-03-23 03:00:12 -080030 .next_fd = 0, \
Linus Torvalds1da177e2005-04-16 15:20:36 -070031 .close_on_exec_init = { { 0, } }, \
32 .open_fds_init = { { 0, } }, \
33 .fd_array = { NULL, } \
34}
35
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), \
Ingo Molnare4d91912006-07-03 00:24:34 -070044 .ctx_lock = __SPIN_LOCK_UNLOCKED(name.ctx_lock), \
Linus Torvalds1da177e2005-04-16 15:20:36 -070045 .reqs_active = 0U, \
46 .max_reqs = ~0U, \
47}
48
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), \
Ingo Molnare4d91912006-07-03 00:24:34 -070056 .page_table_lock = __SPIN_LOCK_UNLOCKED(name.page_table_lock), \
Linus Torvalds1da177e2005-04-16 15:20:36 -070057 .mmlist = LIST_HEAD_INIT(name.mmlist), \
58 .cpu_vm_mask = CPU_MASK_ALL, \
Linus Torvalds1da177e2005-04-16 15:20:36 -070059}
60
Cedric Le Goater1ec320a2006-12-08 02:37:55 -080061#define INIT_SIGNALS(sig) { \
62 .count = ATOMIC_INIT(1), \
Linus Torvalds1da177e2005-04-16 15:20:36 -070063 .wait_chldexit = __WAIT_QUEUE_HEAD_INITIALIZER(sig.wait_chldexit),\
Cedric Le Goater1ec320a2006-12-08 02:37:55 -080064 .shared_pending = { \
Linus Torvalds1da177e2005-04-16 15:20:36 -070065 .list = LIST_HEAD_INIT(sig.shared_pending.list), \
Cedric Le Goater1ec320a2006-12-08 02:37:55 -080066 .signal = {{0}}}, \
Linus Torvalds1da177e2005-04-16 15:20:36 -070067 .posix_timers = LIST_HEAD_INIT(sig.posix_timers), \
68 .cpu_timers = INIT_CPU_TIMERS(sig.cpu_timers), \
69 .rlim = INIT_RLIMITS, \
70}
71
Serge E. Hallynab516012006-10-02 02:18:06 -070072extern struct nsproxy init_nsproxy;
73#define INIT_NSPROXY(nsproxy) { \
Cedric Le Goater9a575a92006-12-08 02:37:59 -080074 .pid_ns = &init_pid_ns, \
Serge E. Hallynab516012006-10-02 02:18:06 -070075 .count = ATOMIC_INIT(1), \
Serge E. Hallyn4865ecf2006-10-02 02:18:14 -070076 .uts_ns = &init_uts_ns, \
Kirill Korotaev6b3286e2006-12-08 02:37:56 -080077 .mnt_ns = NULL, \
Daniel Lezcano4fabcd72007-09-13 09:16:29 +020078 INIT_NET_NS(net_ns) \
Kirill Korotaev73ea4132006-10-02 02:18:20 -070079 INIT_IPC_NS(ipc_ns) \
Cedric Le Goateracce2922007-07-15 23:40:59 -070080 .user_ns = &init_user_ns, \
Serge E. Hallynab516012006-10-02 02:18:06 -070081}
82
Linus Torvalds1da177e2005-04-16 15:20:36 -070083#define INIT_SIGHAND(sighand) { \
84 .count = ATOMIC_INIT(1), \
85 .action = { { { .sa_handler = NULL, } }, }, \
Ingo Molnare4d91912006-07-03 00:24:34 -070086 .siglock = __SPIN_LOCK_UNLOCKED(sighand.siglock), \
Davide Libenzib8fceee2007-09-20 12:40:16 -070087 .signalfd_wqh = __WAIT_QUEUE_HEAD_INITIALIZER(sighand.signalfd_wqh), \
Linus Torvalds1da177e2005-04-16 15:20:36 -070088}
89
90extern struct group_info init_groups;
91
Sukadev Bhattiprolu820e45d2007-05-10 22:23:00 -070092#define INIT_STRUCT_PID { \
93 .count = ATOMIC_INIT(1), \
Sukadev Bhattiprolu820e45d2007-05-10 22:23:00 -070094 .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, \
Sukadev Bhattiprolu4c3f2ea2007-10-18 23:40:03 -0700100 .level = 0, \
101 .numbers = { { \
102 .nr = 0, \
103 .ns = &init_pid_ns, \
104 .pid_chain = { .next = NULL, .pprev = NULL }, \
105 }, } \
Sukadev Bhattiprolu820e45d2007-05-10 22:23:00 -0700106}
107
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}
116
Al Virobfef93a2008-01-10 04:53:18 -0500117#ifdef CONFIG_AUDITSYSCALL
118#define INIT_IDS \
Eric Paris4746ec52008-01-08 10:06:53 -0500119 .loginuid = -1, \
120 .sessionid = -1,
Al Virobfef93a2008-01-10 04:53:18 -0500121#else
122#define INIT_IDS
123#endif
Serge E. Hallyn3b7391d2008-02-04 22:29:45 -0800124
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
135
Linus Torvalds1da177e2005-04-16 15:20:36 -0700136/*
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, \
Roman Zippelf7e42172007-05-09 02:35:17 -0700143 .stack = &init_thread_info, \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700144 .usage = ATOMIC_INIT(2), \
145 .flags = 0, \
146 .lock_depth = -1, \
147 .prio = MAX_PRIO-20, \
148 .static_prio = MAX_PRIO-20, \
Ingo Molnarb29739f2006-06-27 02:54:51 -0700149 .normal_prio = MAX_PRIO-20, \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150 .policy = SCHED_NORMAL, \
151 .cpus_allowed = CPU_MASK_ALL, \
152 .mm = NULL, \
153 .active_mm = &init_mm, \
Peter Zijlstrafa717062008-01-25 21:08:27 +0100154 .rt = { \
155 .run_list = LIST_HEAD_INIT(tsk.rt.run_list), \
Peter Zijlstra6f505b12008-01-25 21:08:30 +0100156 .time_slice = HZ, \
157 .nr_cpus_allowed = NR_CPUS, \
158 }, \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700159 .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, \
Serge E. Hallyn3b7391d2008-02-04 22:29:45 -0800171 .cap_bset = CAP_INIT_BSET, \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700172 .keep_capabilities = 0, \
173 .user = INIT_USER, \
174 .comm = "swapper", \
175 .thread = INIT_THREAD, \
176 .fs = &init_fs, \
177 .files = &init_files, \
178 .signal = &init_signals, \
179 .sighand = &init_sighand, \
Serge E. Hallynab516012006-10-02 02:18:06 -0700180 .nsproxy = &init_nsproxy, \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700181 .pending = { \
182 .list = LIST_HEAD_INIT(tsk.pending.list), \
183 .signal = {{0}}}, \
184 .blocked = {{0}}, \
Ingo Molnare4d91912006-07-03 00:24:34 -0700185 .alloc_lock = __SPIN_LOCK_UNLOCKED(tsk.alloc_lock), \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700186 .journal_info = NULL, \
187 .cpu_timers = INIT_CPU_TIMERS(tsk.cpu_timers), \
Jens Axboe22e2c502005-06-27 10:55:12 +0200188 .fs_excl = ATOMIC_INIT(0), \
Milind Arun Choudharyb32e41b2007-05-08 00:30:08 -0700189 .pi_lock = __SPIN_LOCK_UNLOCKED(tsk.pi_lock), \
Sukadev Bhattiprolu820e45d2007-05-10 22:23:00 -0700190 .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 }, \
Peter Zijlstra3e26c142007-10-16 23:25:50 -0700195 .dirties = INIT_PROP_LOCAL_SINGLE(dirties), \
Al Virobfef93a2008-01-10 04:53:18 -0500196 INIT_IDS \
Ingo Molnarde30a2b2006-07-03 00:24:42 -0700197 INIT_TRACE_IRQFLAGS \
Ingo Molnarfbb9ce952006-07-03 00:24:50 -0700198 INIT_LOCKDEP \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700199}
200
201
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}
208
209
210#endif