1 #ifndef _LINUX_PRCTL_H 2 #define _LINUX_PRCTL_H 3 4 /* Values to pass as first argument to prctl() */ 5 6 #define PR_SET_PDEATHSIG 1 /* Second arg is a signal */ 7 #define PR_GET_PDEATHSIG 2 /* Second arg is a ptr to return the signal */ 8 9 /* Get/set current->mm->dumpable */ 10 #define PR_GET_DUMPABLE 3 11 #define PR_SET_DUMPABLE 4 12 13 /* Get/set unaligned access control bits (if meaningful) */ 14 #define PR_GET_UNALIGN 5 15 #define PR_SET_UNALIGN 6 16 # define PR_UNALIGN_NOPRINT 1 /* silently fix up unaligned user accesses */ 17 # define PR_UNALIGN_SIGBUS 2 /* generate SIGBUS on unaligned user access */ 18 19 /* Get/set whether or not to drop capabilities on setuid() away from 20 * uid 0 (as per security/commoncap.c) */ 21 #define PR_GET_KEEPCAPS 7 22 #define PR_SET_KEEPCAPS 8 23 24 /* Get/set floating-point emulation control bits (if meaningful) */ 25 #define PR_GET_FPEMU 9 26 #define PR_SET_FPEMU 10 27 # define PR_FPEMU_NOPRINT 1 /* silently emulate fp operations accesses */ 28 # define PR_FPEMU_SIGFPE 2 /* don't emulate fp operations, send SIGFPE instead */ 29 30 /* Get/set floating-point exception mode (if meaningful) */ 31 #define PR_GET_FPEXC 11 32 #define PR_SET_FPEXC 12 33 # define PR_FP_EXC_SW_ENABLE 0x80 /* Use FPEXC for FP exception enables */ 34 # define PR_FP_EXC_DIV 0x010000 /* floating point divide by zero */ 35 # define PR_FP_EXC_OVF 0x020000 /* floating point overflow */ 36 # define PR_FP_EXC_UND 0x040000 /* floating point underflow */ 37 # define PR_FP_EXC_RES 0x080000 /* floating point inexact result */ 38 # define PR_FP_EXC_INV 0x100000 /* floating point invalid operation */ 39 # define PR_FP_EXC_DISABLED 0 /* FP exceptions disabled */ 40 # define PR_FP_EXC_NONRECOV 1 /* async non-recoverable exc. mode */ 41 # define PR_FP_EXC_ASYNC 2 /* async recoverable exception mode */ 42 # define PR_FP_EXC_PRECISE 3 /* precise exception mode */ 43 44 /* Get/set whether we use statistical process timing or accurate timestamp 45 * based process timing */ 46 #define PR_GET_TIMING 13 47 #define PR_SET_TIMING 14 48 # define PR_TIMING_STATISTICAL 0 /* Normal, traditional, 49 statistical process timing */ 50 # define PR_TIMING_TIMESTAMP 1 /* Accurate timestamp based 51 process timing */ 52 53 #define PR_SET_NAME 15 /* Set process name */ 54 #define PR_GET_NAME 16 /* Get process name */ 55 56 /* Get/set process endian */ 57 #define PR_GET_ENDIAN 19 58 #define PR_SET_ENDIAN 20 59 # define PR_ENDIAN_BIG 0 60 # define PR_ENDIAN_LITTLE 1 /* True little endian mode */ 61 # define PR_ENDIAN_PPC_LITTLE 2 /* "PowerPC" pseudo little endian */ 62 63 /* Get/set process seccomp mode */ 64 #define PR_GET_SECCOMP 21 65 #define PR_SET_SECCOMP 22 66 67 /* Get/set the capability bounding set (as per security/commoncap.c) */ 68 #define PR_CAPBSET_READ 23 69 #define PR_CAPBSET_DROP 24 70 71 /* Get/set the process' ability to use the timestamp counter instruction */ 72 #define PR_GET_TSC 25 73 #define PR_SET_TSC 26 74 # define PR_TSC_ENABLE 1 /* allow the use of the timestamp counter */ 75 # define PR_TSC_SIGSEGV 2 /* throw a SIGSEGV instead of reading the TSC */ 76 77 /* Get/set securebits (as per security/commoncap.c) */ 78 #define PR_GET_SECUREBITS 27 79 #define PR_SET_SECUREBITS 28 80 81 /* 82 * Get/set the timerslack as used by poll/select/nanosleep 83 * A value of 0 means "use default" 84 */ 85 #define PR_SET_TIMERSLACK 29 86 #define PR_GET_TIMERSLACK 30 87 88 #define PR_TASK_PERF_EVENTS_DISABLE 31 89 #define PR_TASK_PERF_EVENTS_ENABLE 32 90 91 /* 92 * Set early/late kill mode for hwpoison memory corruption. 93 * This influences when the process gets killed on a memory corruption. 94 */ 95 #define PR_MCE_KILL 33 96 # define PR_MCE_KILL_CLEAR 0 97 # define PR_MCE_KILL_SET 1 98 99 # define PR_MCE_KILL_LATE 0 100 # define PR_MCE_KILL_EARLY 1 101 # define PR_MCE_KILL_DEFAULT 2 102 103 #define PR_MCE_KILL_GET 34 104 105 /* 106 * Tune up process memory map specifics. 107 */ 108 #define PR_SET_MM 35 109 # define PR_SET_MM_START_CODE 1 110 # define PR_SET_MM_END_CODE 2 111 # define PR_SET_MM_START_DATA 3 112 # define PR_SET_MM_END_DATA 4 113 # define PR_SET_MM_START_STACK 5 114 # define PR_SET_MM_START_BRK 6 115 # define PR_SET_MM_BRK 7 116 117 /* 118 * Set specific pid that is allowed to ptrace the current task. 119 * A value of 0 mean "no process". 120 */ 121 #define PR_SET_PTRACER 0x59616d61 122 # define PR_SET_PTRACER_ANY ((unsigned long)-1) 123 124 /* 125 * If no_new_privs is set, then operations that grant new privileges (i.e. 126 * execve) will either fail or not grant them. This affects suid/sgid, 127 * file capabilities, and LSMs. 128 * 129 * Operations that merely manipulate or drop existing privileges (setresuid, 130 * capset, etc.) will still work. Drop those privileges if you want them gone. 131 * 132 * Changing LSM security domain is considered a new privilege. So, for example, 133 * asking selinux for a specific new context (e.g. with runcon) will result 134 * in execve returning -EPERM. 135 */ 136 #define PR_SET_NO_NEW_PRIVS 38 137 #define PR_GET_NO_NEW_PRIVS 39 138 139 #endif /* _LINUX_PRCTL_H */ 140
