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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef _LINUX__INIT_TASK_H
2#define _LINUX__INIT_TASK_H
3
Dipankar Sarmaab2af1f2005-09-09 13:04:13 -07004#include <linux/rcupdate.h>
Ingo Molnarde30a2b2006-07-03 00:24:42 -07005#include <linux/irqflags.h>
Serge E. Hallyn4865ecf2006-10-02 02:18:14 -07006#include <linux/utsname.h>
Ingo Molnarfbb9ce92006-07-03 00:24:50 -07007#include <linux/lockdep.h>
Kirill Korotaev73ea4132006-10-02 02:18:20 -07008#include <linux/ipc.h>
Cedric Le Goater9a575a92006-12-08 02:37:59 -08009#include <linux/pid_namespace.h>
Cedric Le Goateracce2922007-07-15 23:40:59 -070010#include <linux/user_namespace.h>
Andrew G. Morgan3898b1b2008-04-28 02:13:40 -070011#include <linux/securebits.h>
Eric W. Biederman772698f2007-09-12 11:55:17 +020012#include <net/net_namespace.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070013
Al Virof52111b2008-05-08 18:19:16 -040014extern struct files_struct init_files;
Linus Torvalds1da177e2005-04-16 15:20:36 -070015
16#define INIT_KIOCTX(name, which_mm) \
17{ \
18 .users = ATOMIC_INIT(1), \
19 .dead = 0, \
20 .mm = &which_mm, \
21 .user_id = 0, \
22 .next = NULL, \
23 .wait = __WAIT_QUEUE_HEAD_INITIALIZER(name.wait), \
Ingo Molnare4d91912006-07-03 00:24:34 -070024 .ctx_lock = __SPIN_LOCK_UNLOCKED(name.ctx_lock), \
Linus Torvalds1da177e2005-04-16 15:20:36 -070025 .reqs_active = 0U, \
26 .max_reqs = ~0U, \
27}
28
29#define INIT_MM(name) \
30{ \
31 .mm_rb = RB_ROOT, \
32 .pgd = swapper_pg_dir, \
33 .mm_users = ATOMIC_INIT(2), \
34 .mm_count = ATOMIC_INIT(1), \
35 .mmap_sem = __RWSEM_INITIALIZER(name.mmap_sem), \
Ingo Molnare4d91912006-07-03 00:24:34 -070036 .page_table_lock = __SPIN_LOCK_UNLOCKED(name.page_table_lock), \
Linus Torvalds1da177e2005-04-16 15:20:36 -070037 .mmlist = LIST_HEAD_INIT(name.mmlist), \
38 .cpu_vm_mask = CPU_MASK_ALL, \
Linus Torvalds1da177e2005-04-16 15:20:36 -070039}
40
Cedric Le Goater1ec320a2006-12-08 02:37:55 -080041#define INIT_SIGNALS(sig) { \
42 .count = ATOMIC_INIT(1), \
Linus Torvalds1da177e2005-04-16 15:20:36 -070043 .wait_chldexit = __WAIT_QUEUE_HEAD_INITIALIZER(sig.wait_chldexit),\
Cedric Le Goater1ec320a2006-12-08 02:37:55 -080044 .shared_pending = { \
Linus Torvalds1da177e2005-04-16 15:20:36 -070045 .list = LIST_HEAD_INIT(sig.shared_pending.list), \
Cedric Le Goater1ec320a2006-12-08 02:37:55 -080046 .signal = {{0}}}, \
Linus Torvalds1da177e2005-04-16 15:20:36 -070047 .posix_timers = LIST_HEAD_INIT(sig.posix_timers), \
48 .cpu_timers = INIT_CPU_TIMERS(sig.cpu_timers), \
49 .rlim = INIT_RLIMITS, \
50}
51
Serge E. Hallynab516012006-10-02 02:18:06 -070052extern struct nsproxy init_nsproxy;
53#define INIT_NSPROXY(nsproxy) { \
Cedric Le Goater9a575a92006-12-08 02:37:59 -080054 .pid_ns = &init_pid_ns, \
Serge E. Hallynab516012006-10-02 02:18:06 -070055 .count = ATOMIC_INIT(1), \
Serge E. Hallyn4865ecf2006-10-02 02:18:14 -070056 .uts_ns = &init_uts_ns, \
Kirill Korotaev6b3286e2006-12-08 02:37:56 -080057 .mnt_ns = NULL, \
Daniel Lezcano4fabcd72007-09-13 09:16:29 +020058 INIT_NET_NS(net_ns) \
Kirill Korotaev73ea4132006-10-02 02:18:20 -070059 INIT_IPC_NS(ipc_ns) \
Cedric Le Goateracce2922007-07-15 23:40:59 -070060 .user_ns = &init_user_ns, \
Serge E. Hallynab516012006-10-02 02:18:06 -070061}
62
Linus Torvalds1da177e2005-04-16 15:20:36 -070063#define INIT_SIGHAND(sighand) { \
64 .count = ATOMIC_INIT(1), \
65 .action = { { { .sa_handler = NULL, } }, }, \
Ingo Molnare4d91912006-07-03 00:24:34 -070066 .siglock = __SPIN_LOCK_UNLOCKED(sighand.siglock), \
Davide Libenzib8fceee2007-09-20 12:40:16 -070067 .signalfd_wqh = __WAIT_QUEUE_HEAD_INITIALIZER(sighand.signalfd_wqh), \
Linus Torvalds1da177e2005-04-16 15:20:36 -070068}
69
70extern struct group_info init_groups;
71
Sukadev Bhattiprolu820e45d2007-05-10 22:23:00 -070072#define INIT_STRUCT_PID { \
73 .count = ATOMIC_INIT(1), \
Sukadev Bhattiprolu820e45d2007-05-10 22:23:00 -070074 .tasks = { \
75 { .first = &init_task.pids[PIDTYPE_PID].node }, \
76 { .first = &init_task.pids[PIDTYPE_PGID].node }, \
77 { .first = &init_task.pids[PIDTYPE_SID].node }, \
78 }, \
79 .rcu = RCU_HEAD_INIT, \
Sukadev Bhattiprolu4c3f2ea2007-10-18 23:40:03 -070080 .level = 0, \
81 .numbers = { { \
82 .nr = 0, \
83 .ns = &init_pid_ns, \
84 .pid_chain = { .next = NULL, .pprev = NULL }, \
85 }, } \
Sukadev Bhattiprolu820e45d2007-05-10 22:23:00 -070086}
87
88#define INIT_PID_LINK(type) \
89{ \
90 .node = { \
91 .next = NULL, \
92 .pprev = &init_struct_pid.tasks[type].first, \
93 }, \
94 .pid = &init_struct_pid, \
95}
96
Al Virobfef93a2008-01-10 04:53:18 -050097#ifdef CONFIG_AUDITSYSCALL
98#define INIT_IDS \
Eric Paris4746ec52008-01-08 10:06:53 -050099 .loginuid = -1, \
100 .sessionid = -1,
Al Virobfef93a2008-01-10 04:53:18 -0500101#else
102#define INIT_IDS
103#endif
Serge E. Hallyn3b7391d2008-02-04 22:29:45 -0800104
105#ifdef CONFIG_SECURITY_FILE_CAPABILITIES
106/*
107 * Because of the reduced scope of CAP_SETPCAP when filesystem
108 * capabilities are in effect, it is safe to allow CAP_SETPCAP to
109 * be available in the default configuration.
110 */
111# define CAP_INIT_BSET CAP_FULL_SET
112#else
113# define CAP_INIT_BSET CAP_INIT_EFF_SET
114#endif
115
Linus Torvalds1da177e2005-04-16 15:20:36 -0700116/*
117 * INIT_TASK is used to set up the first task table, touch at
118 * your own risk!. Base=0, limit=0x1fffff (=2MB)
119 */
120#define INIT_TASK(tsk) \
121{ \
122 .state = 0, \
Roman Zippelf7e42172007-05-09 02:35:17 -0700123 .stack = &init_thread_info, \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700124 .usage = ATOMIC_INIT(2), \
Oleg Nesterov7b34e422008-07-25 01:47:37 -0700125 .flags = PF_KTHREAD, \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126 .lock_depth = -1, \
127 .prio = MAX_PRIO-20, \
128 .static_prio = MAX_PRIO-20, \
Ingo Molnarb29739f2006-06-27 02:54:51 -0700129 .normal_prio = MAX_PRIO-20, \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700130 .policy = SCHED_NORMAL, \
131 .cpus_allowed = CPU_MASK_ALL, \
132 .mm = NULL, \
133 .active_mm = &init_mm, \
Peter Zijlstra4a55bd52008-04-19 19:45:00 +0200134 .se = { \
135 .group_node = LIST_HEAD_INIT(tsk.se.group_node), \
136 }, \
Peter Zijlstrafa717062008-01-25 21:08:27 +0100137 .rt = { \
138 .run_list = LIST_HEAD_INIT(tsk.rt.run_list), \
Peter Zijlstra6f505b12008-01-25 21:08:30 +0100139 .time_slice = HZ, \
140 .nr_cpus_allowed = NR_CPUS, \
141 }, \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700142 .tasks = LIST_HEAD_INIT(tsk.tasks), \
Roland McGrathf4700212008-03-24 18:36:23 -0700143 .ptraced = LIST_HEAD_INIT(tsk.ptraced), \
144 .ptrace_entry = LIST_HEAD_INIT(tsk.ptrace_entry), \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145 .real_parent = &tsk, \
146 .parent = &tsk, \
147 .children = LIST_HEAD_INIT(tsk.children), \
148 .sibling = LIST_HEAD_INIT(tsk.sibling), \
149 .group_leader = &tsk, \
150 .group_info = &init_groups, \
151 .cap_effective = CAP_INIT_EFF_SET, \
152 .cap_inheritable = CAP_INIT_INH_SET, \
153 .cap_permitted = CAP_FULL_SET, \
Serge E. Hallyn3b7391d2008-02-04 22:29:45 -0800154 .cap_bset = CAP_INIT_BSET, \
Andrew G. Morgan3898b1b2008-04-28 02:13:40 -0700155 .securebits = SECUREBITS_DEFAULT, \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700156 .user = INIT_USER, \
157 .comm = "swapper", \
158 .thread = INIT_THREAD, \
159 .fs = &init_fs, \
160 .files = &init_files, \
161 .signal = &init_signals, \
162 .sighand = &init_sighand, \
Serge E. Hallynab516012006-10-02 02:18:06 -0700163 .nsproxy = &init_nsproxy, \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164 .pending = { \
165 .list = LIST_HEAD_INIT(tsk.pending.list), \
166 .signal = {{0}}}, \
167 .blocked = {{0}}, \
Ingo Molnare4d91912006-07-03 00:24:34 -0700168 .alloc_lock = __SPIN_LOCK_UNLOCKED(tsk.alloc_lock), \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169 .journal_info = NULL, \
170 .cpu_timers = INIT_CPU_TIMERS(tsk.cpu_timers), \
Jens Axboe22e2c502005-06-27 10:55:12 +0200171 .fs_excl = ATOMIC_INIT(0), \
Milind Arun Choudharyb32e41b2007-05-08 00:30:08 -0700172 .pi_lock = __SPIN_LOCK_UNLOCKED(tsk.pi_lock), \
Sukadev Bhattiprolu820e45d2007-05-10 22:23:00 -0700173 .pids = { \
174 [PIDTYPE_PID] = INIT_PID_LINK(PIDTYPE_PID), \
175 [PIDTYPE_PGID] = INIT_PID_LINK(PIDTYPE_PGID), \
176 [PIDTYPE_SID] = INIT_PID_LINK(PIDTYPE_SID), \
177 }, \
Peter Zijlstra3e26c142007-10-16 23:25:50 -0700178 .dirties = INIT_PROP_LOCAL_SINGLE(dirties), \
Al Virobfef93a2008-01-10 04:53:18 -0500179 INIT_IDS \
Ingo Molnarde30a2b2006-07-03 00:24:42 -0700180 INIT_TRACE_IRQFLAGS \
Ingo Molnarfbb9ce92006-07-03 00:24:50 -0700181 INIT_LOCKDEP \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700182}
183
184
185#define INIT_CPU_TIMERS(cpu_timers) \
186{ \
187 LIST_HEAD_INIT(cpu_timers[0]), \
188 LIST_HEAD_INIT(cpu_timers[1]), \
189 LIST_HEAD_INIT(cpu_timers[2]), \
190}
191
192
193#endif