[mirror_ubuntu-artful-kernel.git] / include / uapi / linux / prctl.h

#ifndef _LINUX_PRCTL_H
#define _LINUX_PRCTL_H

#include <linux/types.h>

/* Values to pass as first argument to prctl() */

#define PR_SET_PDEATHSIG  1  /* Second arg is a signal */
#define PR_GET_PDEATHSIG  2  /* Second arg is a ptr to return the signal */

/* Get/set current->mm->dumpable */
#define PR_GET_DUMPABLE   3
#define PR_SET_DUMPABLE   4

/* Get/set unaligned access control bits (if meaningful) */
#define PR_GET_UNALIGN	  5
#define PR_SET_UNALIGN	  6
# define PR_UNALIGN_NOPRINT	1	/* silently fix up unaligned user accesses */
# define PR_UNALIGN_SIGBUS	2	/* generate SIGBUS on unaligned user access */

/* Get/set whether or not to drop capabilities on setuid() away from
 * uid 0 (as per security/commoncap.c) */
#define PR_GET_KEEPCAPS   7
#define PR_SET_KEEPCAPS   8

/* Get/set floating-point emulation control bits (if meaningful) */
#define PR_GET_FPEMU  9
#define PR_SET_FPEMU 10
# define PR_FPEMU_NOPRINT	1	/* silently emulate fp operations accesses */
# define PR_FPEMU_SIGFPE	2	/* don't emulate fp operations, send SIGFPE instead */

/* Get/set floating-point exception mode (if meaningful) */
#define PR_GET_FPEXC	11
#define PR_SET_FPEXC	12
# define PR_FP_EXC_SW_ENABLE	0x80	/* Use FPEXC for FP exception enables */
# define PR_FP_EXC_DIV		0x010000	/* floating point divide by zero */
# define PR_FP_EXC_OVF		0x020000	/* floating point overflow */
# define PR_FP_EXC_UND		0x040000	/* floating point underflow */
# define PR_FP_EXC_RES		0x080000	/* floating point inexact result */
# define PR_FP_EXC_INV		0x100000	/* floating point invalid operation */
# define PR_FP_EXC_DISABLED	0	/* FP exceptions disabled */
# define PR_FP_EXC_NONRECOV	1	/* async non-recoverable exc. mode */
# define PR_FP_EXC_ASYNC	2	/* async recoverable exception mode */
# define PR_FP_EXC_PRECISE	3	/* precise exception mode */

/* Get/set whether we use statistical process timing or accurate timestamp
 * based process timing */
#define PR_GET_TIMING   13
#define PR_SET_TIMING   14
# define PR_TIMING_STATISTICAL  0       /* Normal, traditional,
                                                   statistical process timing */
# define PR_TIMING_TIMESTAMP    1       /* Accurate timestamp based
                                                   process timing */

#define PR_SET_NAME    15		/* Set process name */
#define PR_GET_NAME    16		/* Get process name */

/* Get/set process endian */
#define PR_GET_ENDIAN	19
#define PR_SET_ENDIAN	20
# define PR_ENDIAN_BIG		0
# define PR_ENDIAN_LITTLE	1	/* True little endian mode */
# define PR_ENDIAN_PPC_LITTLE	2	/* "PowerPC" pseudo little endian */

/* Get/set process seccomp mode */
#define PR_GET_SECCOMP	21
#define PR_SET_SECCOMP	22

/* Get/set the capability bounding set (as per security/commoncap.c) */
#define PR_CAPBSET_READ 23
#define PR_CAPBSET_DROP 24

/* Get/set the process' ability to use the timestamp counter instruction */
#define PR_GET_TSC 25
#define PR_SET_TSC 26
# define PR_TSC_ENABLE		1	/* allow the use of the timestamp counter */
# define PR_TSC_SIGSEGV		2	/* throw a SIGSEGV instead of reading the TSC */

/* Get/set securebits (as per security/commoncap.c) */
#define PR_GET_SECUREBITS 27
#define PR_SET_SECUREBITS 28

/*
 * Get/set the timerslack as used by poll/select/nanosleep
 * A value of 0 means "use default"
 */
#define PR_SET_TIMERSLACK 29
#define PR_GET_TIMERSLACK 30

#define PR_TASK_PERF_EVENTS_DISABLE		31
#define PR_TASK_PERF_EVENTS_ENABLE		32

/*
 * Set early/late kill mode for hwpoison memory corruption.
 * This influences when the process gets killed on a memory corruption.
 */
#define PR_MCE_KILL	33
# define PR_MCE_KILL_CLEAR   0
# define PR_MCE_KILL_SET     1

# define PR_MCE_KILL_LATE    0
# define PR_MCE_KILL_EARLY   1
# define PR_MCE_KILL_DEFAULT 2

#define PR_MCE_KILL_GET 34

/*
 * Tune up process memory map specifics.
 */
#define PR_SET_MM		35
# define PR_SET_MM_START_CODE		1
# define PR_SET_MM_END_CODE		2
# define PR_SET_MM_START_DATA		3
# define PR_SET_MM_END_DATA		4
# define PR_SET_MM_START_STACK		5
# define PR_SET_MM_START_BRK		6
# define PR_SET_MM_BRK			7
# define PR_SET_MM_ARG_START		8
# define PR_SET_MM_ARG_END		9
# define PR_SET_MM_ENV_START		10
# define PR_SET_MM_ENV_END		11
# define PR_SET_MM_AUXV			12
# define PR_SET_MM_EXE_FILE		13
# define PR_SET_MM_MAP			14
# define PR_SET_MM_MAP_SIZE		15

/*
 * This structure provides new memory descriptor
 * map which mostly modifies /proc/pid/stat[m]
 * output for a task. This mostly done in a
 * sake of checkpoint/restore functionality.
 */
struct prctl_mm_map {
	__u64	start_code;		/* code section bounds */
	__u64	end_code;
	__u64	start_data;		/* data section bounds */
	__u64	end_data;
	__u64	start_brk;		/* heap for brk() syscall */
	__u64	brk;
	__u64	start_stack;		/* stack starts at */
	__u64	arg_start;		/* command line arguments bounds */
	__u64	arg_end;
	__u64	env_start;		/* environment variables bounds */
	__u64	env_end;
	__u64	*auxv;			/* auxiliary vector */
	__u32	auxv_size;		/* vector size */
	__u32	exe_fd;			/* /proc/$pid/exe link file */
};

/*
 * Set specific pid that is allowed to ptrace the current task.
 * A value of 0 mean "no process".
 */
#define PR_SET_PTRACER 0x59616d61
# define PR_SET_PTRACER_ANY ((unsigned long)-1)

#define PR_SET_CHILD_SUBREAPER	36
#define PR_GET_CHILD_SUBREAPER	37

/*
 * If no_new_privs is set, then operations that grant new privileges (i.e.
 * execve) will either fail or not grant them.  This affects suid/sgid,
 * file capabilities, and LSMs.
 *
 * Operations that merely manipulate or drop existing privileges (setresuid,
 * capset, etc.) will still work.  Drop those privileges if you want them gone.
 *
 * Changing LSM security domain is considered a new privilege.  So, for example,
 * asking selinux for a specific new context (e.g. with runcon) will result
 * in execve returning -EPERM.
 *
 * See Documentation/prctl/no_new_privs.txt for more details.
 */
#define PR_SET_NO_NEW_PRIVS	38
#define PR_GET_NO_NEW_PRIVS	39

#define PR_GET_TID_ADDRESS	40

#define PR_SET_THP_DISABLE	41
#define PR_GET_THP_DISABLE	42

/*
 * Tell the kernel to start/stop helping userspace manage bounds tables.
 */
#define PR_MPX_ENABLE_MANAGEMENT  43
#define PR_MPX_DISABLE_MANAGEMENT 44

#define PR_SET_FP_MODE		45
#define PR_GET_FP_MODE		46
# define PR_FP_MODE_FR		(1 << 0)	/* 64b FP registers */
# define PR_FP_MODE_FRE		(1 << 1)	/* 32b compatibility */

/* Control the ambient capability set */
#define PR_CAP_AMBIENT			47
# define PR_CAP_AMBIENT_IS_SET		1
# define PR_CAP_AMBIENT_RAISE		2
# define PR_CAP_AMBIENT_LOWER		3
# define PR_CAP_AMBIENT_CLEAR_ALL	4

/* Per task speculation control */
#define PR_GET_SPECULATION_CTRL		52
#define PR_SET_SPECULATION_CTRL		53
/* Speculation control variants */
# define PR_SPEC_STORE_BYPASS		0
/* Return and control values for PR_SET/GET_SPECULATION_CTRL */
# define PR_SPEC_NOT_AFFECTED		0
# define PR_SPEC_PRCTL			(1UL << 0)
# define PR_SPEC_ENABLE			(1UL << 1)
# define PR_SPEC_DISABLE		(1UL << 2)
# define PR_SPEC_FORCE_DISABLE		(1UL << 3)

/*
 * Control the LSM specific peer information
 *
 * The Ubuntu kernel provides an early preview of LSM Stacking. Use these
 * PRCTLs at your own risk. Their values are not guaranteed to be stable in the
 * case of colliding with an upstream PRCTL.
 */
#define	PR_GET_DISPLAY_LSM	1000000
#define	PR_SET_DISPLAY_LSM	1000001

#endif /* _LINUX_PRCTL_H */
Commit	Line	Data
1da177e4 LT	1	#ifndef _LINUX_PRCTL_H
	2	#define _LINUX_PRCTL_H
	3
f606b77f CG	4	#include <linux/types.h>
f606b77f CG	5
1da177e4 LT	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
3898b1b4 AM	21	/* Get/set whether or not to drop capabilities on setuid() away from
3898b1b4 AM	22	* uid 0 (as per security/commoncap.c) */
1da177e4 LT	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
651d765d AB	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
1d9d02fe AA	65	/* Get/set process seccomp mode */
	66	#define PR_GET_SECCOMP 21
	67	#define PR_SET_SECCOMP 22
	68
3898b1b4	69	/* Get/set the capability bounding set (as per security/commoncap.c) */
3b7391de SH	70	#define PR_CAPBSET_READ 23
	71	#define PR_CAPBSET_DROP 24
	72
8fb402bc EB	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
3898b1b4 AM	79	/* Get/set securebits (as per security/commoncap.c) */
	80	#define PR_GET_SECUREBITS 27
	81	#define PR_SET_SECUREBITS 28
	82
6976675d AV	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
cdd6c482 IM	90	#define PR_TASK_PERF_EVENTS_DISABLE 31
cdd6c482 IM	91	#define PR_TASK_PERF_EVENTS_ENABLE 32
1d1c7ddb	92
1087e9b4 AK	93	/*
	94	* Set early/late kill mode for hwpoison memory corruption.
	95	* This influences when the process gets killed on a memory corruption.
	96	*/
4db96cf0	97	#define PR_MCE_KILL 33
1087e9b4 AK	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
4db96cf0	106
028ee4be CG	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
fe8c7f5c CG	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
b32dfe37	123	# define PR_SET_MM_EXE_FILE 13
f606b77f CG	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	};
028ee4be	149
2d514487 KC	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
bf06189e	155	# define PR_SET_PTRACER_ANY ((unsigned long)-1)
2d514487	156
300f786b CG	157	#define PR_SET_CHILD_SUBREAPER 36
300f786b CG	158	#define PR_GET_CHILD_SUBREAPER 37
ebec18a6	159
259e5e6c AL	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.
c540521b AL	171	*
c540521b AL	172	* See Documentation/prctl/no_new_privs.txt for more details.
259e5e6c	173	*/
300f786b CG	174	#define PR_SET_NO_NEW_PRIVS 38
	175	#define PR_GET_NO_NEW_PRIVS 39
	176
	177	#define PR_GET_TID_ADDRESS 40
259e5e6c	178
a0715cc2 AT	179	#define PR_SET_THP_DISABLE 41
	180	#define PR_GET_THP_DISABLE 42
	181
fe3d197f DH	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
9791554b PB	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
58319057 AL	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
f12a33c4 TG	200	/* Per task speculation control */
	201	#define PR_GET_SPECULATION_CTRL 52
	202	#define PR_SET_SPECULATION_CTRL 53
	203	/* Speculation control variants */
	204	# define PR_SPEC_STORE_BYPASS 0
	205	/* Return and control values for PR_SET/GET_SPECULATION_CTRL */
	206	# define PR_SPEC_NOT_AFFECTED 0
	207	# define PR_SPEC_PRCTL (1UL << 0)
	208	# define PR_SPEC_ENABLE (1UL << 1)
	209	# define PR_SPEC_DISABLE (1UL << 2)
e29928d4	210	# define PR_SPEC_FORCE_DISABLE (1UL << 3)
f12a33c4	211
ab5e2f3f	212	/*
99c55932 TH	213	* Control the LSM specific peer information
	214	*
	215	* The Ubuntu kernel provides an early preview of LSM Stacking. Use these
	216	* PRCTLs at your own risk. Their values are not guaranteed to be stable in the
	217	* case of colliding with an upstream PRCTL.
ab5e2f3f	218	*/
99c55932 TH	219	#define PR_GET_DISPLAY_LSM 1000000
	220	#define PR_SET_DISPLAY_LSM 1000001
	221
1da177e4	222	#endif /* _LINUX_PRCTL_H */