init_task.h 4.3 KB

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  1. #ifndef _LINUX__INIT_TASK_H
  2. #define _LINUX__INIT_TASK_H
  3. #include <linux/file.h>
  4. #include <linux/rcupdate.h>
  5. #include <linux/irqflags.h>
  6. #include <linux/utsname.h>
  7. #include <linux/lockdep.h>
  8. #include <linux/ipc.h>
  9. #include <linux/pid_namespace.h>
  10. #define INIT_FDTABLE \
  11. { \
  12. .max_fds = NR_OPEN_DEFAULT, \
  13. .fd = &init_files.fd_array[0], \
  14. .close_on_exec = (fd_set *)&init_files.close_on_exec_init, \
  15. .open_fds = (fd_set *)&init_files.open_fds_init, \
  16. .rcu = RCU_HEAD_INIT, \
  17. .next = NULL, \
  18. }
  19. #define INIT_FILES \
  20. { \
  21. .count = ATOMIC_INIT(1), \
  22. .fdt = &init_files.fdtab, \
  23. .fdtab = INIT_FDTABLE, \
  24. .file_lock = __SPIN_LOCK_UNLOCKED(init_task.file_lock), \
  25. .next_fd = 0, \
  26. .close_on_exec_init = { { 0, } }, \
  27. .open_fds_init = { { 0, } }, \
  28. .fd_array = { NULL, } \
  29. }
  30. #define INIT_KIOCTX(name, which_mm) \
  31. { \
  32. .users = ATOMIC_INIT(1), \
  33. .dead = 0, \
  34. .mm = &which_mm, \
  35. .user_id = 0, \
  36. .next = NULL, \
  37. .wait = __WAIT_QUEUE_HEAD_INITIALIZER(name.wait), \
  38. .ctx_lock = __SPIN_LOCK_UNLOCKED(name.ctx_lock), \
  39. .reqs_active = 0U, \
  40. .max_reqs = ~0U, \
  41. }
  42. #define INIT_MM(name) \
  43. { \
  44. .mm_rb = RB_ROOT, \
  45. .pgd = swapper_pg_dir, \
  46. .mm_users = ATOMIC_INIT(2), \
  47. .mm_count = ATOMIC_INIT(1), \
  48. .mmap_sem = __RWSEM_INITIALIZER(name.mmap_sem), \
  49. .page_table_lock = __SPIN_LOCK_UNLOCKED(name.page_table_lock), \
  50. .mmlist = LIST_HEAD_INIT(name.mmlist), \
  51. .cpu_vm_mask = CPU_MASK_ALL, \
  52. }
  53. #define INIT_SIGNALS(sig) { \
  54. .count = ATOMIC_INIT(1), \
  55. .wait_chldexit = __WAIT_QUEUE_HEAD_INITIALIZER(sig.wait_chldexit),\
  56. .shared_pending = { \
  57. .list = LIST_HEAD_INIT(sig.shared_pending.list), \
  58. .signal = {{0}}}, \
  59. .posix_timers = LIST_HEAD_INIT(sig.posix_timers), \
  60. .cpu_timers = INIT_CPU_TIMERS(sig.cpu_timers), \
  61. .rlim = INIT_RLIMITS, \
  62. .pgrp = 1, \
  63. .tty_old_pgrp = NULL, \
  64. { .__session = 1}, \
  65. }
  66. extern struct nsproxy init_nsproxy;
  67. #define INIT_NSPROXY(nsproxy) { \
  68. .pid_ns = &init_pid_ns, \
  69. .count = ATOMIC_INIT(1), \
  70. .nslock = __SPIN_LOCK_UNLOCKED(nsproxy.nslock), \
  71. .uts_ns = &init_uts_ns, \
  72. .mnt_ns = NULL, \
  73. INIT_IPC_NS(ipc_ns) \
  74. }
  75. #define INIT_SIGHAND(sighand) { \
  76. .count = ATOMIC_INIT(1), \
  77. .action = { { { .sa_handler = NULL, } }, }, \
  78. .siglock = __SPIN_LOCK_UNLOCKED(sighand.siglock), \
  79. }
  80. extern struct group_info init_groups;
  81. /*
  82. * INIT_TASK is used to set up the first task table, touch at
  83. * your own risk!. Base=0, limit=0x1fffff (=2MB)
  84. */
  85. #define INIT_TASK(tsk) \
  86. { \
  87. .state = 0, \
  88. .thread_info = &init_thread_info, \
  89. .usage = ATOMIC_INIT(2), \
  90. .flags = 0, \
  91. .lock_depth = -1, \
  92. .prio = MAX_PRIO-20, \
  93. .static_prio = MAX_PRIO-20, \
  94. .normal_prio = MAX_PRIO-20, \
  95. .policy = SCHED_NORMAL, \
  96. .cpus_allowed = CPU_MASK_ALL, \
  97. .mm = NULL, \
  98. .active_mm = &init_mm, \
  99. .run_list = LIST_HEAD_INIT(tsk.run_list), \
  100. .ioprio = 0, \
  101. .time_slice = HZ, \
  102. .tasks = LIST_HEAD_INIT(tsk.tasks), \
  103. .ptrace_children= LIST_HEAD_INIT(tsk.ptrace_children), \
  104. .ptrace_list = LIST_HEAD_INIT(tsk.ptrace_list), \
  105. .real_parent = &tsk, \
  106. .parent = &tsk, \
  107. .children = LIST_HEAD_INIT(tsk.children), \
  108. .sibling = LIST_HEAD_INIT(tsk.sibling), \
  109. .group_leader = &tsk, \
  110. .group_info = &init_groups, \
  111. .cap_effective = CAP_INIT_EFF_SET, \
  112. .cap_inheritable = CAP_INIT_INH_SET, \
  113. .cap_permitted = CAP_FULL_SET, \
  114. .keep_capabilities = 0, \
  115. .user = INIT_USER, \
  116. .comm = "swapper", \
  117. .thread = INIT_THREAD, \
  118. .fs = &init_fs, \
  119. .files = &init_files, \
  120. .signal = &init_signals, \
  121. .sighand = &init_sighand, \
  122. .nsproxy = &init_nsproxy, \
  123. .pending = { \
  124. .list = LIST_HEAD_INIT(tsk.pending.list), \
  125. .signal = {{0}}}, \
  126. .blocked = {{0}}, \
  127. .alloc_lock = __SPIN_LOCK_UNLOCKED(tsk.alloc_lock), \
  128. .journal_info = NULL, \
  129. .cpu_timers = INIT_CPU_TIMERS(tsk.cpu_timers), \
  130. .fs_excl = ATOMIC_INIT(0), \
  131. .pi_lock = SPIN_LOCK_UNLOCKED, \
  132. INIT_TRACE_IRQFLAGS \
  133. INIT_LOCKDEP \
  134. }
  135. #define INIT_CPU_TIMERS(cpu_timers) \
  136. { \
  137. LIST_HEAD_INIT(cpu_timers[0]), \
  138. LIST_HEAD_INIT(cpu_timers[1]), \
  139. LIST_HEAD_INIT(cpu_timers[2]), \
  140. }
  141. #endif