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 #include <net/net_namespace.h> 13 14 #define INIT_FDTABLE \ 15 { \ 16 .max_fds = NR_OPEN_DEFAULT, \ 17 .fd = &init_files.fd_array[0], \ 18 .close_on_exec = (fd_set *)&init_files.close_on_exec_init, \ 19 .open_fds = (fd_set *)&init_files.open_fds_init, \ 20 .rcu = RCU_HEAD_INIT, \ 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 } 71 72 extern struct nsproxy init_nsproxy; 73 #define INIT_NSPROXY(nsproxy) { \ 74 .pid_ns = &init_pid_ns, \ 75 .count = ATOMIC_INIT(1), \ 76 .uts_ns = &init_uts_ns, \ 77 .mnt_ns = NULL, \ 78 INIT_NET_NS(net_ns) \ 79 INIT_IPC_NS(ipc_ns) \ 80 .user_ns = &init_user_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 .signalfd_wqh = __WAIT_QUEUE_HEAD_INITIALIZER(sighand.signalfd_wqh), \ 88 } 89 90 extern struct group_info init_groups; 91 92 #define INIT_STRUCT_PID { \ 93 .count = ATOMIC_INIT(1), \ 94 .tasks = { \ 95 { .first = &init_task.pids[PIDTYPE_PID].node }, \ 96 { .first = &init_task.pids[PIDTYPE_PGID].node }, \ 97 { .first = &init_task.pids[PIDTYPE_SID].node }, \ 98 }, \ 99 .rcu = RCU_HEAD_INIT, \ 100 .level = 0, \ 101 .numbers = { { \ 102 .nr = 0, \ 103 .ns = &init_pid_ns, \ 104 .pid_chain = { .next = NULL, .pprev = NULL }, \ 105 }, } \ 106 } 107 108 #define INIT_PID_LINK(type) \ 109 { \ 110 .node = { \ 111 .next = NULL, \ 112 .pprev = &init_struct_pid.tasks[type].first, \ 113 }, \ 114 .pid = &init_struct_pid, \ 115 } 116 117 #ifdef CONFIG_AUDITSYSCALL 118 #define INIT_IDS \ 119 .loginuid = -1, \ 120 .sessionid = -1, 121 #else 122 #define INIT_IDS 123 #endif 124 125 #ifdef CONFIG_SECURITY_FILE_CAPABILITIES 126 /* 127 * Because of the reduced scope of CAP_SETPCAP when filesystem 128 * capabilities are in effect, it is safe to allow CAP_SETPCAP to 129 * be available in the default configuration. 130 */ 131 # define CAP_INIT_BSET CAP_FULL_SET 132 #else 133 # define CAP_INIT_BSET CAP_INIT_EFF_SET 134 #endif 135 136 /* 137 * INIT_TASK is used to set up the first task table, touch at 138 * your own risk!. Base=0, limit=0x1fffff (=2MB) 139 */ 140 #define INIT_TASK(tsk) \ 141 { \ 142 .state = 0, \ 143 .stack = &init_thread_info, \ 144 .usage = ATOMIC_INIT(2), \ 145 .flags = 0, \ 146 .lock_depth = -1, \ 147 .prio = MAX_PRIO-20, \ 148 .static_prio = MAX_PRIO-20, \ 149 .normal_prio = MAX_PRIO-20, \ 150 .policy = SCHED_NORMAL, \ 151 .cpus_allowed = CPU_MASK_ALL, \ 152 .mm = NULL, \ 153 .active_mm = &init_mm, \ 154 .rt = { \ 155 .run_list = LIST_HEAD_INIT(tsk.rt.run_list), \ 156 .time_slice = HZ, \ 157 .nr_cpus_allowed = NR_CPUS, \ 158 }, \ 159 .tasks = LIST_HEAD_INIT(tsk.tasks), \ 160 .ptrace_children= LIST_HEAD_INIT(tsk.ptrace_children), \ 161 .ptrace_list = LIST_HEAD_INIT(tsk.ptrace_list), \ 162 .real_parent = &tsk, \ 163 .parent = &tsk, \ 164 .children = LIST_HEAD_INIT(tsk.children), \ 165 .sibling = LIST_HEAD_INIT(tsk.sibling), \ 166 .group_leader = &tsk, \ 167 .group_info = &init_groups, \ 168 .cap_effective = CAP_INIT_EFF_SET, \ 169 .cap_inheritable = CAP_INIT_INH_SET, \ 170 .cap_permitted = CAP_FULL_SET, \ 171 .cap_bset = CAP_INIT_BSET, \ 172 .keep_capabilities = 0, \ 173 .user = INIT_USER, \ 174 .comm = "swapper", \ 175 .thread = INIT_THREAD, \ 176 .fs = &init_fs, \ 177 .files = &init_files, \ 178 .signal = &init_signals, \ 179 .sighand = &init_sighand, \ 180 .nsproxy = &init_nsproxy, \ 181 .pending = { \ 182 .list = LIST_HEAD_INIT(tsk.pending.list), \ 183 .signal = {{0}}}, \ 184 .blocked = {{0}}, \ 185 .alloc_lock = __SPIN_LOCK_UNLOCKED(tsk.alloc_lock), \ 186 .journal_info = NULL, \ 187 .cpu_timers = INIT_CPU_TIMERS(tsk.cpu_timers), \ 188 .fs_excl = ATOMIC_INIT(0), \ 189 .pi_lock = __SPIN_LOCK_UNLOCKED(tsk.pi_lock), \ 190 .pids = { \ 191 [PIDTYPE_PID] = INIT_PID_LINK(PIDTYPE_PID), \ 192 [PIDTYPE_PGID] = INIT_PID_LINK(PIDTYPE_PGID), \ 193 [PIDTYPE_SID] = INIT_PID_LINK(PIDTYPE_SID), \ 194 }, \ 195 .dirties = INIT_PROP_LOCAL_SINGLE(dirties), \ 196 INIT_IDS \ 197 INIT_TRACE_IRQFLAGS \ 198 INIT_LOCKDEP \ 199 } 200 201 202 #define INIT_CPU_TIMERS(cpu_timers) \ 203 { \ 204 LIST_HEAD_INIT(cpu_timers[0]), \ 205 LIST_HEAD_INIT(cpu_timers[1]), \ 206 LIST_HEAD_INIT(cpu_timers[2]), \ 207 } 208 209 210 #endif 211