Ben Cheng | 224b54f | 2013-10-15 18:26:18 -0700 | [diff] [blame] | 1 | #ifndef _LINUX_PRCTL_H |
| 2 | #define _LINUX_PRCTL_H |
| 3 | |
Christopher Ferris | 7c0b639 | 2015-01-23 15:34:26 -0800 | [diff] [blame] | 4 | #include <linux/types.h> |
| 5 | |
Ben Cheng | 224b54f | 2013-10-15 18:26:18 -0700 | [diff] [blame] | 6 | /* Values to pass as first argument to prctl() */ |
| 7 | |
| 8 | #define PR_SET_PDEATHSIG 1 /* Second arg is a signal */ |
| 9 | #define PR_GET_PDEATHSIG 2 /* Second arg is a ptr to return the signal */ |
| 10 | |
| 11 | /* Get/set current->mm->dumpable */ |
| 12 | #define PR_GET_DUMPABLE 3 |
| 13 | #define PR_SET_DUMPABLE 4 |
| 14 | |
| 15 | /* Get/set unaligned access control bits (if meaningful) */ |
| 16 | #define PR_GET_UNALIGN 5 |
| 17 | #define PR_SET_UNALIGN 6 |
| 18 | # define PR_UNALIGN_NOPRINT 1 /* silently fix up unaligned user accesses */ |
| 19 | # define PR_UNALIGN_SIGBUS 2 /* generate SIGBUS on unaligned user access */ |
| 20 | |
| 21 | /* Get/set whether or not to drop capabilities on setuid() away from |
| 22 | * uid 0 (as per security/commoncap.c) */ |
| 23 | #define PR_GET_KEEPCAPS 7 |
| 24 | #define PR_SET_KEEPCAPS 8 |
| 25 | |
| 26 | /* Get/set floating-point emulation control bits (if meaningful) */ |
| 27 | #define PR_GET_FPEMU 9 |
| 28 | #define PR_SET_FPEMU 10 |
| 29 | # define PR_FPEMU_NOPRINT 1 /* silently emulate fp operations accesses */ |
| 30 | # define PR_FPEMU_SIGFPE 2 /* don't emulate fp operations, send SIGFPE instead */ |
| 31 | |
| 32 | /* Get/set floating-point exception mode (if meaningful) */ |
| 33 | #define PR_GET_FPEXC 11 |
| 34 | #define PR_SET_FPEXC 12 |
| 35 | # define PR_FP_EXC_SW_ENABLE 0x80 /* Use FPEXC for FP exception enables */ |
| 36 | # define PR_FP_EXC_DIV 0x010000 /* floating point divide by zero */ |
| 37 | # define PR_FP_EXC_OVF 0x020000 /* floating point overflow */ |
| 38 | # define PR_FP_EXC_UND 0x040000 /* floating point underflow */ |
| 39 | # define PR_FP_EXC_RES 0x080000 /* floating point inexact result */ |
| 40 | # define PR_FP_EXC_INV 0x100000 /* floating point invalid operation */ |
| 41 | # define PR_FP_EXC_DISABLED 0 /* FP exceptions disabled */ |
| 42 | # define PR_FP_EXC_NONRECOV 1 /* async non-recoverable exc. mode */ |
| 43 | # define PR_FP_EXC_ASYNC 2 /* async recoverable exception mode */ |
| 44 | # define PR_FP_EXC_PRECISE 3 /* precise exception mode */ |
| 45 | |
| 46 | /* Get/set whether we use statistical process timing or accurate timestamp |
| 47 | * based process timing */ |
| 48 | #define PR_GET_TIMING 13 |
| 49 | #define PR_SET_TIMING 14 |
| 50 | # define PR_TIMING_STATISTICAL 0 /* Normal, traditional, |
| 51 | statistical process timing */ |
| 52 | # define PR_TIMING_TIMESTAMP 1 /* Accurate timestamp based |
| 53 | process timing */ |
| 54 | |
| 55 | #define PR_SET_NAME 15 /* Set process name */ |
| 56 | #define PR_GET_NAME 16 /* Get process name */ |
| 57 | |
| 58 | /* Get/set process endian */ |
| 59 | #define PR_GET_ENDIAN 19 |
| 60 | #define PR_SET_ENDIAN 20 |
| 61 | # define PR_ENDIAN_BIG 0 |
| 62 | # define PR_ENDIAN_LITTLE 1 /* True little endian mode */ |
| 63 | # define PR_ENDIAN_PPC_LITTLE 2 /* "PowerPC" pseudo little endian */ |
| 64 | |
| 65 | /* Get/set process seccomp mode */ |
| 66 | #define PR_GET_SECCOMP 21 |
| 67 | #define PR_SET_SECCOMP 22 |
| 68 | |
| 69 | /* Get/set the capability bounding set (as per security/commoncap.c) */ |
| 70 | #define PR_CAPBSET_READ 23 |
| 71 | #define PR_CAPBSET_DROP 24 |
| 72 | |
| 73 | /* Get/set the process' ability to use the timestamp counter instruction */ |
| 74 | #define PR_GET_TSC 25 |
| 75 | #define PR_SET_TSC 26 |
| 76 | # define PR_TSC_ENABLE 1 /* allow the use of the timestamp counter */ |
| 77 | # define PR_TSC_SIGSEGV 2 /* throw a SIGSEGV instead of reading the TSC */ |
| 78 | |
| 79 | /* Get/set securebits (as per security/commoncap.c) */ |
| 80 | #define PR_GET_SECUREBITS 27 |
| 81 | #define PR_SET_SECUREBITS 28 |
| 82 | |
| 83 | /* |
| 84 | * Get/set the timerslack as used by poll/select/nanosleep |
| 85 | * A value of 0 means "use default" |
| 86 | */ |
| 87 | #define PR_SET_TIMERSLACK 29 |
| 88 | #define PR_GET_TIMERSLACK 30 |
| 89 | |
| 90 | #define PR_TASK_PERF_EVENTS_DISABLE 31 |
| 91 | #define PR_TASK_PERF_EVENTS_ENABLE 32 |
| 92 | |
| 93 | /* |
| 94 | * Set early/late kill mode for hwpoison memory corruption. |
| 95 | * This influences when the process gets killed on a memory corruption. |
| 96 | */ |
| 97 | #define PR_MCE_KILL 33 |
| 98 | # define PR_MCE_KILL_CLEAR 0 |
| 99 | # define PR_MCE_KILL_SET 1 |
| 100 | |
| 101 | # define PR_MCE_KILL_LATE 0 |
| 102 | # define PR_MCE_KILL_EARLY 1 |
| 103 | # define PR_MCE_KILL_DEFAULT 2 |
| 104 | |
| 105 | #define PR_MCE_KILL_GET 34 |
| 106 | |
| 107 | /* |
| 108 | * Tune up process memory map specifics. |
| 109 | */ |
| 110 | #define PR_SET_MM 35 |
| 111 | # define PR_SET_MM_START_CODE 1 |
| 112 | # define PR_SET_MM_END_CODE 2 |
| 113 | # define PR_SET_MM_START_DATA 3 |
| 114 | # define PR_SET_MM_END_DATA 4 |
| 115 | # define PR_SET_MM_START_STACK 5 |
| 116 | # define PR_SET_MM_START_BRK 6 |
| 117 | # define PR_SET_MM_BRK 7 |
| 118 | # define PR_SET_MM_ARG_START 8 |
| 119 | # define PR_SET_MM_ARG_END 9 |
| 120 | # define PR_SET_MM_ENV_START 10 |
| 121 | # define PR_SET_MM_ENV_END 11 |
| 122 | # define PR_SET_MM_AUXV 12 |
| 123 | # define PR_SET_MM_EXE_FILE 13 |
Christopher Ferris | 7c0b639 | 2015-01-23 15:34:26 -0800 | [diff] [blame] | 124 | # define PR_SET_MM_MAP 14 |
| 125 | # define PR_SET_MM_MAP_SIZE 15 |
| 126 | |
| 127 | /* |
| 128 | * This structure provides new memory descriptor |
| 129 | * map which mostly modifies /proc/pid/stat[m] |
| 130 | * output for a task. This mostly done in a |
| 131 | * sake of checkpoint/restore functionality. |
| 132 | */ |
| 133 | struct prctl_mm_map { |
| 134 | __u64 start_code; /* code section bounds */ |
| 135 | __u64 end_code; |
| 136 | __u64 start_data; /* data section bounds */ |
| 137 | __u64 end_data; |
| 138 | __u64 start_brk; /* heap for brk() syscall */ |
| 139 | __u64 brk; |
| 140 | __u64 start_stack; /* stack starts at */ |
| 141 | __u64 arg_start; /* command line arguments bounds */ |
| 142 | __u64 arg_end; |
| 143 | __u64 env_start; /* environment variables bounds */ |
| 144 | __u64 env_end; |
| 145 | __u64 *auxv; /* auxiliary vector */ |
| 146 | __u32 auxv_size; /* vector size */ |
| 147 | __u32 exe_fd; /* /proc/$pid/exe link file */ |
| 148 | }; |
Ben Cheng | 224b54f | 2013-10-15 18:26:18 -0700 | [diff] [blame] | 149 | |
| 150 | /* |
| 151 | * Set specific pid that is allowed to ptrace the current task. |
| 152 | * A value of 0 mean "no process". |
| 153 | */ |
| 154 | #define PR_SET_PTRACER 0x59616d61 |
| 155 | # define PR_SET_PTRACER_ANY ((unsigned long)-1) |
| 156 | |
| 157 | #define PR_SET_CHILD_SUBREAPER 36 |
| 158 | #define PR_GET_CHILD_SUBREAPER 37 |
| 159 | |
| 160 | /* |
| 161 | * If no_new_privs is set, then operations that grant new privileges (i.e. |
| 162 | * execve) will either fail or not grant them. This affects suid/sgid, |
| 163 | * file capabilities, and LSMs. |
| 164 | * |
| 165 | * Operations that merely manipulate or drop existing privileges (setresuid, |
| 166 | * capset, etc.) will still work. Drop those privileges if you want them gone. |
| 167 | * |
| 168 | * Changing LSM security domain is considered a new privilege. So, for example, |
| 169 | * asking selinux for a specific new context (e.g. with runcon) will result |
| 170 | * in execve returning -EPERM. |
| 171 | * |
| 172 | * See Documentation/prctl/no_new_privs.txt for more details. |
| 173 | */ |
| 174 | #define PR_SET_NO_NEW_PRIVS 38 |
| 175 | #define PR_GET_NO_NEW_PRIVS 39 |
| 176 | |
| 177 | #define PR_GET_TID_ADDRESS 40 |
| 178 | |
Christopher Ferris | 3147524 | 2014-09-02 17:43:51 -0700 | [diff] [blame] | 179 | #define PR_SET_THP_DISABLE 41 |
| 180 | #define PR_GET_THP_DISABLE 42 |
| 181 | |
Christopher Ferris | 12e1f28 | 2016-02-04 12:35:07 -0800 | [diff] [blame^] | 182 | /* |
| 183 | * Tell the kernel to start/stop helping userspace manage bounds tables. |
| 184 | */ |
| 185 | #define PR_MPX_ENABLE_MANAGEMENT 43 |
| 186 | #define PR_MPX_DISABLE_MANAGEMENT 44 |
| 187 | |
| 188 | #define PR_SET_FP_MODE 45 |
| 189 | #define PR_GET_FP_MODE 46 |
| 190 | # define PR_FP_MODE_FR (1 << 0) /* 64b FP registers */ |
| 191 | # define PR_FP_MODE_FRE (1 << 1) /* 32b compatibility */ |
| 192 | |
| 193 | /* Control the ambient capability set */ |
| 194 | #define PR_CAP_AMBIENT 47 |
| 195 | # define PR_CAP_AMBIENT_IS_SET 1 |
| 196 | # define PR_CAP_AMBIENT_RAISE 2 |
| 197 | # define PR_CAP_AMBIENT_LOWER 3 |
| 198 | # define PR_CAP_AMBIENT_CLEAR_ALL 4 |
| 199 | |
Ben Cheng | 224b54f | 2013-10-15 18:26:18 -0700 | [diff] [blame] | 200 | #endif /* _LINUX_PRCTL_H */ |