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 12 #define INIT_FDTABLE \ 13 { \ 14 .max_fds = NR_OPEN_DEFAULT, \ 15 .fd = &init_files.fd_array[0], \ 16 .close_on_exec = (fd_set *)&init_files.close_on_exec_init, \ 17 .open_fds = (fd_set *)&init_files.open_fds_init, \ 18 .rcu = RCU_HEAD_INIT, \ 19 .next = NULL, \ 20 } 21 22 #define INIT_FILES \ 23 { \ 24 .count = ATOMIC_INIT(1), \ 25 .fdt = &init_files.fdtab, \ 26 .fdtab = INIT_FDTABLE, \ 27 .file_lock = __SPIN_LOCK_UNLOCKED(init_task.file_lock), \ 28 .next_fd = 0, \ 29 .close_on_exec_init = { { 0, } }, \ 30 .open_fds_init = { { 0, } }, \ 31 .fd_array = { NULL, } \ 32 } 33 34 #define INIT_KIOCTX(name, which_mm) \ 35 { \ 36 .users = ATOMIC_INIT(1), \ 37 .dead = 0, \ 38 .mm = &which_mm, \ 39 .user_id = 0, \ 40 .next = NULL, \ 41 .wait = __WAIT_QUEUE_HEAD_INITIALIZER(name.wait), \ 42 .ctx_lock = __SPIN_LOCK_UNLOCKED(name.ctx_lock), \ 43 .reqs_active = 0U, \ 44 .max_reqs = ~0U, \ 45 } 46 47 #define INIT_MM(name) \ 48 { \ 49 .mm_rb = RB_ROOT, \ 50 .pgd = swapper_pg_dir, \ 51 .mm_users = ATOMIC_INIT(2), \ 52 .mm_count = ATOMIC_INIT(1), \ 53 .mmap_sem = __RWSEM_INITIALIZER(name.mmap_sem), \ 54 .page_table_lock = __SPIN_LOCK_UNLOCKED(name.page_table_lock), \ 55 .mmlist = LIST_HEAD_INIT(name.mmlist), \ 56 .cpu_vm_mask = CPU_MASK_ALL, \ 57 } 58 59 #define INIT_SIGNALS(sig) { \ 60 .count = ATOMIC_INIT(1), \ 61 .wait_chldexit = __WAIT_QUEUE_HEAD_INITIALIZER(sig.wait_chldexit),\ 62 .shared_pending = { \ 63 .list = LIST_HEAD_INIT(sig.shared_pending.list), \ 64 .signal = {{0}}}, \ 65 .posix_timers = LIST_HEAD_INIT(sig.posix_timers), \ 66 .cpu_timers = INIT_CPU_TIMERS(sig.cpu_timers), \ 67 .rlim = INIT_RLIMITS, \ 68 .pgrp = 1, \ 69 .tty_old_pgrp = 0, \ 70 { .__session = 1}, \ 71 } 72 73 extern struct nsproxy init_nsproxy; 74 #define INIT_NSPROXY(nsproxy) { \ 75 .pid_ns = &init_pid_ns, \ 76 .count = ATOMIC_INIT(1), \ 77 .nslock = __SPIN_LOCK_UNLOCKED(nsproxy.nslock), \ 78 .uts_ns = &init_uts_ns, \ 79 .mnt_ns = NULL, \ 80 INIT_IPC_NS(ipc_ns) \ 81 } 82 83 #define INIT_SIGHAND(sighand) { \ 84 .count = ATOMIC_INIT(1), \ 85 .action = { { { .sa_handler = NULL, } }, }, \ 86 .siglock = __SPIN_LOCK_UNLOCKED(sighand.siglock), \ 87 } 88 89 extern struct group_info init_groups; 90 91 /* 92 * INIT_TASK is used to set up the first task table, touch at 93 * your own risk!. Base=0, limit=0x1fffff (=2MB) 94 */ 95 #define INIT_TASK(tsk) \ 96 { \ 97 .state = 0, \ 98 .thread_info = &init_thread_info, \ 99 .usage = ATOMIC_INIT(2), \ 100 .flags = 0, \ 101 .lock_depth = -1, \ 102 .prio = MAX_PRIO-20, \ 103 .static_prio = MAX_PRIO-20, \ 104 .normal_prio = MAX_PRIO-20, \ 105 .policy = SCHED_NORMAL, \ 106 .cpus_allowed = CPU_MASK_ALL, \ 107 .mm = NULL, \ 108 .active_mm = &init_mm, \ 109 .run_list = LIST_HEAD_INIT(tsk.run_list), \ 110 .ioprio = 0, \ 111 .time_slice = HZ, \ 112 .tasks = LIST_HEAD_INIT(tsk.tasks), \ 113 .ptrace_children= LIST_HEAD_INIT(tsk.ptrace_children), \ 114 .ptrace_list = LIST_HEAD_INIT(tsk.ptrace_list), \ 115 .real_parent = &tsk, \ 116 .parent = &tsk, \ 117 .children = LIST_HEAD_INIT(tsk.children), \ 118 .sibling = LIST_HEAD_INIT(tsk.sibling), \ 119 .group_leader = &tsk, \ 120 .group_info = &init_groups, \ 121 .cap_effective = CAP_INIT_EFF_SET, \ 122 .cap_inheritable = CAP_INIT_INH_SET, \ 123 .cap_permitted = CAP_FULL_SET, \ 124 .keep_capabilities = 0, \ 125 .user = INIT_USER, \ 126 .comm = "swapper", \ 127 .thread = INIT_THREAD, \ 128 .fs = &init_fs, \ 129 .files = &init_files, \ 130 .signal = &init_signals, \ 131 .sighand = &init_sighand, \ 132 .nsproxy = &init_nsproxy, \ 133 .pending = { \ 134 .list = LIST_HEAD_INIT(tsk.pending.list), \ 135 .signal = {{0}}}, \ 136 .blocked = {{0}}, \ 137 .alloc_lock = __SPIN_LOCK_UNLOCKED(tsk.alloc_lock), \ 138 .journal_info = NULL, \ 139 .cpu_timers = INIT_CPU_TIMERS(tsk.cpu_timers), \ 140 .fs_excl = ATOMIC_INIT(0), \ 141 .pi_lock = SPIN_LOCK_UNLOCKED, \ 142 INIT_TRACE_IRQFLAGS \ 143 INIT_LOCKDEP \ 144 } 145 146 147 #define INIT_CPU_TIMERS(cpu_timers) \ 148 { \ 149 LIST_HEAD_INIT(cpu_timers[0]), \ 150 LIST_HEAD_INIT(cpu_timers[1]), \ 151 LIST_HEAD_INIT(cpu_timers[2]), \ 152 } 153 154 155 #endif 156