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 .max_fdset = EMBEDDED_FD_SET_SIZE, \ 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 .free_files = NULL, \ 21 .next = NULL, \ 22 } 23 24 #define INIT_FILES \ 25 { \ 26 .count = ATOMIC_INIT(1), \ 27 .fdt = &init_files.fdtab, \ 28 .fdtab = INIT_FDTABLE, \ 29 .file_lock = __SPIN_LOCK_UNLOCKED(init_task.file_lock), \ 30 .next_fd = 0, \ 31 .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), \ 44 .ctx_lock = __SPIN_LOCK_UNLOCKED(name.ctx_lock), \ 45 .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), \ 56 .page_table_lock = __SPIN_LOCK_UNLOCKED(name.page_table_lock), \ 57 .mmlist = LIST_HEAD_INIT(name.mmlist), \ 58 .cpu_vm_mask = CPU_MASK_ALL, \ 59 } 60 61 #define INIT_SIGNALS(sig) { \ 62 .count = ATOMIC_INIT(1), \ 63 .wait_chldexit = __WAIT_QUEUE_HEAD_INITIALIZER(sig.wait_chldexit),\ 64 .shared_pending = { \ 65 .list = LIST_HEAD_INIT(sig.shared_pending.list), \ 66 .signal = {{0}}}, \ 67 .posix_timers = LIST_HEAD_INIT(sig.posix_timers), \ 68 .cpu_timers = INIT_CPU_TIMERS(sig.cpu_timers), \ 69 .rlim = INIT_RLIMITS, \ 70 .pgrp = 1, \ 71 .tty_old_pgrp = 0, \ 72 { .__session = 1}, \ 73 } 74 75 extern struct nsproxy init_nsproxy; 76 #define INIT_NSPROXY(nsproxy) { \ 77 .pid_ns = &init_pid_ns, \ 78 .count = ATOMIC_INIT(1), \ 79 .nslock = __SPIN_LOCK_UNLOCKED(nsproxy.nslock), \ 80 .id = 0, \ 81 .uts_ns = &init_uts_ns, \ 82 .mnt_ns = NULL, \ 83 INIT_IPC_NS(ipc_ns) \ 84 } 85 86 #define INIT_SIGHAND(sighand) { \ 87 .count = ATOMIC_INIT(1), \ 88 .action = { { { .sa_handler = NULL, } }, }, \ 89 .siglock = __SPIN_LOCK_UNLOCKED(sighand.siglock), \ 90 } 91 92 extern struct group_info init_groups; 93 94 /* 95 * INIT_TASK is used to set up the first task table, touch at 96 * your own risk!. Base=0, limit=0x1fffff (=2MB) 97 */ 98 #define INIT_TASK(tsk) \ 99 { \ 100 .state = 0, \ 101 .thread_info = &init_thread_info, \ 102 .usage = ATOMIC_INIT(2), \ 103 .flags = 0, \ 104 .lock_depth = -1, \ 105 .prio = MAX_PRIO-20, \ 106 .static_prio = MAX_PRIO-20, \ 107 .normal_prio = MAX_PRIO-20, \ 108 .policy = SCHED_NORMAL, \ 109 .cpus_allowed = CPU_MASK_ALL, \ 110 .mm = NULL, \ 111 .active_mm = &init_mm, \ 112 .run_list = LIST_HEAD_INIT(tsk.run_list), \ 113 .ioprio = 0, \ 114 .time_slice = HZ, \ 115 .tasks = LIST_HEAD_INIT(tsk.tasks), \ 116 .ptrace_children= LIST_HEAD_INIT(tsk.ptrace_children), \ 117 .ptrace_list = LIST_HEAD_INIT(tsk.ptrace_list), \ 118 .real_parent = &tsk, \ 119 .parent = &tsk, \ 120 .children = LIST_HEAD_INIT(tsk.children), \ 121 .sibling = LIST_HEAD_INIT(tsk.sibling), \ 122 .group_leader = &tsk, \ 123 .group_info = &init_groups, \ 124 .cap_effective = CAP_INIT_EFF_SET, \ 125 .cap_inheritable = CAP_INIT_INH_SET, \ 126 .cap_permitted = CAP_FULL_SET, \ 127 .keep_capabilities = 0, \ 128 .user = INIT_USER, \ 129 .comm = "swapper", \ 130 .thread = INIT_THREAD, \ 131 .fs = &init_fs, \ 132 .files = &init_files, \ 133 .signal = &init_signals, \ 134 .sighand = &init_sighand, \ 135 .nsproxy = &init_nsproxy, \ 136 .pending = { \ 137 .list = LIST_HEAD_INIT(tsk.pending.list), \ 138 .signal = {{0}}}, \ 139 .blocked = {{0}}, \ 140 .alloc_lock = __SPIN_LOCK_UNLOCKED(tsk.alloc_lock), \ 141 .journal_info = NULL, \ 142 .cpu_timers = INIT_CPU_TIMERS(tsk.cpu_timers), \ 143 .fs_excl = ATOMIC_INIT(0), \ 144 .pi_lock = SPIN_LOCK_UNLOCKED, \ 145 INIT_TRACE_IRQFLAGS \ 146 INIT_LOCKDEP \ 147 } 148 149 150 #define INIT_CPU_TIMERS(cpu_timers) \ 151 { \ 152 LIST_HEAD_INIT(cpu_timers[0]), \ 153 LIST_HEAD_INIT(cpu_timers[1]), \ 154 LIST_HEAD_INIT(cpu_timers[2]), \ 155 } 156 157 158 #endif 159