1 #ifndef _LINUX__INIT_TASK_H 2 #define _LINUX__INIT_TASK_H 3 4 #include <linux/rcupdate.h> 5 #include <linux/irqflags.h> 6 #include <linux/utsname.h> 7 #include <linux/lockdep.h> 8 #include <linux/ftrace.h> 9 #include <linux/ipc.h> 10 #include <linux/pid_namespace.h> 11 #include <linux/user_namespace.h> 12 #include <linux/securebits.h> 13 #include <net/net_namespace.h> 14 15 extern struct files_struct init_files; 16 extern struct fs_struct init_fs; 17 18 #define INIT_MM(name) \ 19 { \ 20 .mm_rb = RB_ROOT, \ 21 .pgd = swapper_pg_dir, \ 22 .mm_users = ATOMIC_INIT(2), \ 23 .mm_count = ATOMIC_INIT(1), \ 24 .mmap_sem = __RWSEM_INITIALIZER(name.mmap_sem), \ 25 .page_table_lock = __SPIN_LOCK_UNLOCKED(name.page_table_lock), \ 26 .mmlist = LIST_HEAD_INIT(name.mmlist), \ 27 .cpu_vm_mask = CPU_MASK_ALL, \ 28 } 29 30 #define INIT_SIGNALS(sig) { \ 31 .count = ATOMIC_INIT(1), \ 32 .wait_chldexit = __WAIT_QUEUE_HEAD_INITIALIZER(sig.wait_chldexit),\ 33 .shared_pending = { \ 34 .list = LIST_HEAD_INIT(sig.shared_pending.list), \ 35 .signal = {{0}}}, \ 36 .posix_timers = LIST_HEAD_INIT(sig.posix_timers), \ 37 .cpu_timers = INIT_CPU_TIMERS(sig.cpu_timers), \ 38 .rlim = INIT_RLIMITS, \ 39 .cputimer = { \ 40 .cputime = INIT_CPUTIME, \ 41 .running = 0, \ 42 .lock = __SPIN_LOCK_UNLOCKED(sig.cputimer.lock), \ 43 }, \ 44 } 45 46 extern struct nsproxy init_nsproxy; 47 #define INIT_NSPROXY(nsproxy) { \ 48 .pid_ns = &init_pid_ns, \ 49 .count = ATOMIC_INIT(1), \ 50 .uts_ns = &init_uts_ns, \ 51 .mnt_ns = NULL, \ 52 INIT_NET_NS(net_ns) \ 53 INIT_IPC_NS(ipc_ns) \ 54 } 55 56 #define INIT_SIGHAND(sighand) { \ 57 .count = ATOMIC_INIT(1), \ 58 .action = { { { .sa_handler = NULL, } }, }, \ 59 .siglock = __SPIN_LOCK_UNLOCKED(sighand.siglock), \ 60 .signalfd_wqh = __WAIT_QUEUE_HEAD_INITIALIZER(sighand.signalfd_wqh), \ 61 } 62 63 extern struct group_info init_groups; 64 65 #define INIT_STRUCT_PID { \ 66 .count = ATOMIC_INIT(1), \ 67 .tasks = { \ 68 { .first = &init_task.pids[PIDTYPE_PID].node }, \ 69 { .first = &init_task.pids[PIDTYPE_PGID].node }, \ 70 { .first = &init_task.pids[PIDTYPE_SID].node }, \ 71 }, \ 72 .rcu = RCU_HEAD_INIT, \ 73 .level = 0, \ 74 .numbers = { { \ 75 .nr = 0, \ 76 .ns = &init_pid_ns, \ 77 .pid_chain = { .next = NULL, .pprev = NULL }, \ 78 }, } \ 79 } 80 81 #define INIT_PID_LINK(type) \ 82 { \ 83 .node = { \ 84 .next = NULL, \ 85 .pprev = &init_struct_pid.tasks[type].first, \ 86 }, \ 87 .pid = &init_struct_pid, \ 88 } 89 90 #ifdef CONFIG_AUDITSYSCALL 91 #define INIT_IDS \ 92 .loginuid = -1, \ 93 .sessionid = -1, 94 #else 95 #define INIT_IDS 96 #endif 97 98 #ifdef CONFIG_SECURITY_FILE_CAPABILITIES 99 /* 100 * Because of the reduced scope of CAP_SETPCAP when filesystem 101 * capabilities are in effect, it is safe to allow CAP_SETPCAP to 102 * be available in the default configuration. 103 */ 104 # define CAP_INIT_BSET CAP_FULL_SET 105 #else 106 # define CAP_INIT_BSET CAP_INIT_EFF_SET 107 #endif 108 109 extern struct cred init_cred; 110 111 #ifdef CONFIG_PERF_COUNTERS 112 # define INIT_PERF_COUNTERS(tsk) \ 113 .perf_counter_mutex = \ 114 __MUTEX_INITIALIZER(tsk.perf_counter_mutex), \ 115 .perf_counter_list = LIST_HEAD_INIT(tsk.perf_counter_list), 116 #else 117 # define INIT_PERF_COUNTERS(tsk) 118 #endif 119 120 /* 121 * INIT_TASK is used to set up the first task table, touch at 122 * your own risk!. Base=0, limit=0x1fffff (=2MB) 123 */ 124 #define INIT_TASK(tsk) \ 125 { \ 126 .state = 0, \ 127 .stack = &init_thread_info, \ 128 .usage = ATOMIC_INIT(2), \ 129 .flags = PF_KTHREAD, \ 130 .lock_depth = -1, \ 131 .prio = MAX_PRIO-20, \ 132 .static_prio = MAX_PRIO-20, \ 133 .normal_prio = MAX_PRIO-20, \ 134 .policy = SCHED_NORMAL, \ 135 .cpus_allowed = CPU_MASK_ALL, \ 136 .mm = NULL, \ 137 .active_mm = &init_mm, \ 138 .se = { \ 139 .group_node = LIST_HEAD_INIT(tsk.se.group_node), \ 140 }, \ 141 .rt = { \ 142 .run_list = LIST_HEAD_INIT(tsk.rt.run_list), \ 143 .time_slice = HZ, \ 144 .nr_cpus_allowed = NR_CPUS, \ 145 }, \ 146 .tasks = LIST_HEAD_INIT(tsk.tasks), \ 147 .pushable_tasks = PLIST_NODE_INIT(tsk.pushable_tasks, MAX_PRIO), \ 148 .ptraced = LIST_HEAD_INIT(tsk.ptraced), \ 149 .ptrace_entry = LIST_HEAD_INIT(tsk.ptrace_entry), \ 150 .real_parent = &tsk, \ 151 .parent = &tsk, \ 152 .children = LIST_HEAD_INIT(tsk.children), \ 153 .sibling = LIST_HEAD_INIT(tsk.sibling), \ 154 .group_leader = &tsk, \ 155 .real_cred = &init_cred, \ 156 .cred = &init_cred, \ 157 .cred_guard_mutex = \ 158 __MUTEX_INITIALIZER(tsk.cred_guard_mutex), \ 159 .comm = "swapper", \ 160 .thread = INIT_THREAD, \ 161 .fs = &init_fs, \ 162 .files = &init_files, \ 163 .signal = &init_signals, \ 164 .sighand = &init_sighand, \ 165 .nsproxy = &init_nsproxy, \ 166 .pending = { \ 167 .list = LIST_HEAD_INIT(tsk.pending.list), \ 168 .signal = {{0}}}, \ 169 .blocked = {{0}}, \ 170 .alloc_lock = __SPIN_LOCK_UNLOCKED(tsk.alloc_lock), \ 171 .journal_info = NULL, \ 172 .cpu_timers = INIT_CPU_TIMERS(tsk.cpu_timers), \ 173 .fs_excl = ATOMIC_INIT(0), \ 174 .pi_lock = __SPIN_LOCK_UNLOCKED(tsk.pi_lock), \ 175 .timer_slack_ns = 50000, /* 50 usec default slack */ \ 176 .pids = { \ 177 [PIDTYPE_PID] = INIT_PID_LINK(PIDTYPE_PID), \ 178 [PIDTYPE_PGID] = INIT_PID_LINK(PIDTYPE_PGID), \ 179 [PIDTYPE_SID] = INIT_PID_LINK(PIDTYPE_SID), \ 180 }, \ 181 .dirties = INIT_PROP_LOCAL_SINGLE(dirties), \ 182 INIT_IDS \ 183 INIT_PERF_COUNTERS(tsk) \ 184 INIT_TRACE_IRQFLAGS \ 185 INIT_LOCKDEP \ 186 INIT_FTRACE_GRAPH \ 187 INIT_TRACE_RECURSION \ 188 } 189 190 191 #define INIT_CPU_TIMERS(cpu_timers) \ 192 { \ 193 LIST_HEAD_INIT(cpu_timers[0]), \ 194 LIST_HEAD_INIT(cpu_timers[1]), \ 195 LIST_HEAD_INIT(cpu_timers[2]), \ 196 } 197 198 199 #endif 200