prctl.h 5.1 KB

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  1. #ifndef _LINUX_PRCTL_H
  2. #define _LINUX_PRCTL_H
  3. /* Values to pass as first argument to prctl() */
  4. #define PR_SET_PDEATHSIG 1 /* Second arg is a signal */
  5. #define PR_GET_PDEATHSIG 2 /* Second arg is a ptr to return the signal */
  6. /* Get/set current->mm->dumpable */
  7. #define PR_GET_DUMPABLE 3
  8. #define PR_SET_DUMPABLE 4
  9. /* Get/set unaligned access control bits (if meaningful) */
  10. #define PR_GET_UNALIGN 5
  11. #define PR_SET_UNALIGN 6
  12. # define PR_UNALIGN_NOPRINT 1 /* silently fix up unaligned user accesses */
  13. # define PR_UNALIGN_SIGBUS 2 /* generate SIGBUS on unaligned user access */
  14. /* Get/set whether or not to drop capabilities on setuid() away from
  15. * uid 0 (as per security/commoncap.c) */
  16. #define PR_GET_KEEPCAPS 7
  17. #define PR_SET_KEEPCAPS 8
  18. /* Get/set floating-point emulation control bits (if meaningful) */
  19. #define PR_GET_FPEMU 9
  20. #define PR_SET_FPEMU 10
  21. # define PR_FPEMU_NOPRINT 1 /* silently emulate fp operations accesses */
  22. # define PR_FPEMU_SIGFPE 2 /* don't emulate fp operations, send SIGFPE instead */
  23. /* Get/set floating-point exception mode (if meaningful) */
  24. #define PR_GET_FPEXC 11
  25. #define PR_SET_FPEXC 12
  26. # define PR_FP_EXC_SW_ENABLE 0x80 /* Use FPEXC for FP exception enables */
  27. # define PR_FP_EXC_DIV 0x010000 /* floating point divide by zero */
  28. # define PR_FP_EXC_OVF 0x020000 /* floating point overflow */
  29. # define PR_FP_EXC_UND 0x040000 /* floating point underflow */
  30. # define PR_FP_EXC_RES 0x080000 /* floating point inexact result */
  31. # define PR_FP_EXC_INV 0x100000 /* floating point invalid operation */
  32. # define PR_FP_EXC_DISABLED 0 /* FP exceptions disabled */
  33. # define PR_FP_EXC_NONRECOV 1 /* async non-recoverable exc. mode */
  34. # define PR_FP_EXC_ASYNC 2 /* async recoverable exception mode */
  35. # define PR_FP_EXC_PRECISE 3 /* precise exception mode */
  36. /* Get/set whether we use statistical process timing or accurate timestamp
  37. * based process timing */
  38. #define PR_GET_TIMING 13
  39. #define PR_SET_TIMING 14
  40. # define PR_TIMING_STATISTICAL 0 /* Normal, traditional,
  41. statistical process timing */
  42. # define PR_TIMING_TIMESTAMP 1 /* Accurate timestamp based
  43. process timing */
  44. #define PR_SET_NAME 15 /* Set process name */
  45. #define PR_GET_NAME 16 /* Get process name */
  46. /* Get/set process endian */
  47. #define PR_GET_ENDIAN 19
  48. #define PR_SET_ENDIAN 20
  49. # define PR_ENDIAN_BIG 0
  50. # define PR_ENDIAN_LITTLE 1 /* True little endian mode */
  51. # define PR_ENDIAN_PPC_LITTLE 2 /* "PowerPC" pseudo little endian */
  52. /* Get/set process seccomp mode */
  53. #define PR_GET_SECCOMP 21
  54. #define PR_SET_SECCOMP 22
  55. /* Get/set the capability bounding set (as per security/commoncap.c) */
  56. #define PR_CAPBSET_READ 23
  57. #define PR_CAPBSET_DROP 24
  58. /* Get/set the process' ability to use the timestamp counter instruction */
  59. #define PR_GET_TSC 25
  60. #define PR_SET_TSC 26
  61. # define PR_TSC_ENABLE 1 /* allow the use of the timestamp counter */
  62. # define PR_TSC_SIGSEGV 2 /* throw a SIGSEGV instead of reading the TSC */
  63. /* Get/set securebits (as per security/commoncap.c) */
  64. #define PR_GET_SECUREBITS 27
  65. #define PR_SET_SECUREBITS 28
  66. /*
  67. * Get/set the timerslack as used by poll/select/nanosleep
  68. * A value of 0 means "use default"
  69. */
  70. #define PR_SET_TIMERSLACK 29
  71. #define PR_GET_TIMERSLACK 30
  72. #define PR_TASK_PERF_EVENTS_DISABLE 31
  73. #define PR_TASK_PERF_EVENTS_ENABLE 32
  74. /*
  75. * Set early/late kill mode for hwpoison memory corruption.
  76. * This influences when the process gets killed on a memory corruption.
  77. */
  78. #define PR_MCE_KILL 33
  79. # define PR_MCE_KILL_CLEAR 0
  80. # define PR_MCE_KILL_SET 1
  81. # define PR_MCE_KILL_LATE 0
  82. # define PR_MCE_KILL_EARLY 1
  83. # define PR_MCE_KILL_DEFAULT 2
  84. #define PR_MCE_KILL_GET 34
  85. /*
  86. * Tune up process memory map specifics.
  87. */
  88. #define PR_SET_MM 35
  89. # define PR_SET_MM_START_CODE 1
  90. # define PR_SET_MM_END_CODE 2
  91. # define PR_SET_MM_START_DATA 3
  92. # define PR_SET_MM_END_DATA 4
  93. # define PR_SET_MM_START_STACK 5
  94. # define PR_SET_MM_START_BRK 6
  95. # define PR_SET_MM_BRK 7
  96. # define PR_SET_MM_ARG_START 8
  97. # define PR_SET_MM_ARG_END 9
  98. # define PR_SET_MM_ENV_START 10
  99. # define PR_SET_MM_ENV_END 11
  100. # define PR_SET_MM_AUXV 12
  101. # define PR_SET_MM_EXE_FILE 13
  102. /*
  103. * Set specific pid that is allowed to ptrace the current task.
  104. * A value of 0 mean "no process".
  105. */
  106. #define PR_SET_PTRACER 0x59616d61
  107. # define PR_SET_PTRACER_ANY ((unsigned long)-1)
  108. #define PR_SET_CHILD_SUBREAPER 36
  109. #define PR_GET_CHILD_SUBREAPER 37
  110. /*
  111. * If no_new_privs is set, then operations that grant new privileges (i.e.
  112. * execve) will either fail or not grant them. This affects suid/sgid,
  113. * file capabilities, and LSMs.
  114. *
  115. * Operations that merely manipulate or drop existing privileges (setresuid,
  116. * capset, etc.) will still work. Drop those privileges if you want them gone.
  117. *
  118. * Changing LSM security domain is considered a new privilege. So, for example,
  119. * asking selinux for a specific new context (e.g. with runcon) will result
  120. * in execve returning -EPERM.
  121. *
  122. * See Documentation/prctl/no_new_privs.txt for more details.
  123. */
  124. #define PR_SET_NO_NEW_PRIVS 38
  125. #define PR_GET_NO_NEW_PRIVS 39
  126. #define PR_GET_TID_ADDRESS 40
  127. #endif /* _LINUX_PRCTL_H */