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 #include <linux/user_namespace.h> 12 13 #define INIT_FDTABLE \ 14 { \ 15 .max_fds = NR_OPEN_DEFAULT, \ 16 .fd = &init_files.fd_array[0], \ 17 .close_on_exec = (fd_set *)&init_files.close_on_exec_init, \ 18 .open_fds = (fd_set *)&init_files.open_fds_init, \ 19 .rcu = RCU_HEAD_INIT, \ 20 .next = NULL, \ 21 } 22 23 #define INIT_FILES \ 24 { \ 25 .count = ATOMIC_INIT(1), \ 26 .fdt = &init_files.fdtab, \ 27 .fdtab = INIT_FDTABLE, \ 28 .file_lock = __SPIN_LOCK_UNLOCKED(init_task.file_lock), \ 29 .next_fd = 0, \ 30 .close_on_exec_init = { { 0, } }, \ 31 .open_fds_init = { { 0, } }, \ 32 .fd_array = { NULL, } \ 33 } 34 35 #define INIT_KIOCTX(name, which_mm) \ 36 { \ 37 .users = ATOMIC_INIT(1), \ 38 .dead = 0, \ 39 .mm = &which_mm, \ 40 .user_id = 0, \ 41 .next = NULL, \ 42 .wait = __WAIT_QUEUE_HEAD_INITIALIZER(name.wait), \ 43 .ctx_lock = __SPIN_LOCK_UNLOCKED(name.ctx_lock), \ 44 .reqs_active = 0U, \ 45 .max_reqs = ~0U, \ 46 } 47 48 #define INIT_MM(name) \ 49 { \ 50 .mm_rb = RB_ROOT, \ 51 .pgd = swapper_pg_dir, \ 52 .mm_users = ATOMIC_INIT(2), \ 53 .mm_count = ATOMIC_INIT(1), \ 54 .mmap_sem = __RWSEM_INITIALIZER(name.mmap_sem), \ 55 .page_table_lock = __SPIN_LOCK_UNLOCKED(name.page_table_lock), \ 56 .mmlist = LIST_HEAD_INIT(name.mmlist), \ 57 .cpu_vm_mask = CPU_MASK_ALL, \ 58 } 59 60 #define INIT_SIGNALS(sig) { \ 61 .count = ATOMIC_INIT(1), \ 62 .wait_chldexit = __WAIT_QUEUE_HEAD_INITIALIZER(sig.wait_chldexit),\ 63 .shared_pending = { \ 64 .list = LIST_HEAD_INIT(sig.shared_pending.list), \ 65 .signal = {{0}}}, \ 66 .posix_timers = LIST_HEAD_INIT(sig.posix_timers), \ 67 .cpu_timers = INIT_CPU_TIMERS(sig.cpu_timers), \ 68 .rlim = INIT_RLIMITS, \ 69 .pgrp = 0, \ 70 .tty_old_pgrp = NULL, \ 71 { .__session = 0}, \ 72 } 73 74 extern struct nsproxy init_nsproxy; 75 #define INIT_NSPROXY(nsproxy) { \ 76 .pid_ns = &init_pid_ns, \ 77 .count = ATOMIC_INIT(1), \ 78 .nslock = __SPIN_LOCK_UNLOCKED(nsproxy.nslock), \ 79 .uts_ns = &init_uts_ns, \ 80 .mnt_ns = NULL, \ 81 INIT_IPC_NS(ipc_ns) \ 82 .user_ns = &init_user_ns, \ 83 } 84 85 #define INIT_SIGHAND(sighand) { \ 86 .count = ATOMIC_INIT(1), \ 87 .action = { { { .sa_handler = NULL, } }, }, \ 88 .siglock = __SPIN_LOCK_UNLOCKED(sighand.siglock), \ 89 .signalfd_list = LIST_HEAD_INIT(sighand.signalfd_list), \ 90 } 91 92 extern struct group_info init_groups; 93 94 #define INIT_STRUCT_PID { \ 95 .count = ATOMIC_INIT(1), \ 96 .nr = 0, \ 97 /* Don't put this struct pid in pid_hash */ \ 98 .pid_chain = { .next = NULL, .pprev = NULL }, \ 99 .tasks = { \ 100 { .first = &init_task.pids[PIDTYPE_PID].node }, \ 101 { .first = &init_task.pids[PIDTYPE_PGID].node }, \ 102 { .first = &init_task.pids[PIDTYPE_SID].node }, \ 103 }, \ 104 .rcu = RCU_HEAD_INIT, \ 105 } 106 107 #define INIT_PID_LINK(type) \ 108 { \ 109 .node = { \ 110 .next = NULL, \ 111 .pprev = &init_struct_pid.tasks[type].first, \ 112 }, \ 113 .pid = &init_struct_pid, \ 114 } 115 116 /* 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, \ 123 .stack = &init_thread_info, \ 124 .usage = ATOMIC_INIT(2), \ 125 .flags = 0, \ 126 .lock_depth = -1, \ 127 .prio = MAX_PRIO-20, \ 128 .static_prio = MAX_PRIO-20, \ 129 .normal_prio = MAX_PRIO-20, \ 130 .policy = SCHED_NORMAL, \ 131 .cpus_allowed = CPU_MASK_ALL, \ 132 .mm = NULL, \ 133 .active_mm = &init_mm, \ 134 .run_list = LIST_HEAD_INIT(tsk.run_list), \ 135 .ioprio = 0, \ 136 .time_slice = HZ, \ 137 .tasks = LIST_HEAD_INIT(tsk.tasks), \ 138 .ptrace_children= LIST_HEAD_INIT(tsk.ptrace_children), \ 139 .ptrace_list = LIST_HEAD_INIT(tsk.ptrace_list), \ 140 .real_parent = &tsk, \ 141 .parent = &tsk, \ 142 .children = LIST_HEAD_INIT(tsk.children), \ 143 .sibling = LIST_HEAD_INIT(tsk.sibling), \ 144 .group_leader = &tsk, \ 145 .group_info = &init_groups, \ 146 .cap_effective = CAP_INIT_EFF_SET, \ 147 .cap_inheritable = CAP_INIT_INH_SET, \ 148 .cap_permitted = CAP_FULL_SET, \ 149 .keep_capabilities = 0, \ 150 .user = INIT_USER, \ 151 .comm = "swapper", \ 152 .thread = INIT_THREAD, \ 153 .fs = &init_fs, \ 154 .files = &init_files, \ 155 .signal = &init_signals, \ 156 .sighand = &init_sighand, \ 157 .nsproxy = &init_nsproxy, \ 158 .pending = { \ 159 .list = LIST_HEAD_INIT(tsk.pending.list), \ 160 .signal = {{0}}}, \ 161 .blocked = {{0}}, \ 162 .alloc_lock = __SPIN_LOCK_UNLOCKED(tsk.alloc_lock), \ 163 .journal_info = NULL, \ 164 .cpu_timers = INIT_CPU_TIMERS(tsk.cpu_timers), \ 165 .fs_excl = ATOMIC_INIT(0), \ 166 .pi_lock = __SPIN_LOCK_UNLOCKED(tsk.pi_lock), \ 167 .pids = { \ 168 [PIDTYPE_PID] = INIT_PID_LINK(PIDTYPE_PID), \ 169 [PIDTYPE_PGID] = INIT_PID_LINK(PIDTYPE_PGID), \ 170 [PIDTYPE_SID] = INIT_PID_LINK(PIDTYPE_SID), \ 171 }, \ 172 INIT_TRACE_IRQFLAGS \ 173 INIT_LOCKDEP \ 174 } 175 176 177 #define INIT_CPU_TIMERS(cpu_timers) \ 178 { \ 179 LIST_HEAD_INIT(cpu_timers[0]), \ 180 LIST_HEAD_INIT(cpu_timers[1]), \ 181 LIST_HEAD_INIT(cpu_timers[2]), \ 182 } 183 184 185 #endif 186