/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */#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/userspace-api/no_new_privs.rst 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 /* * No longer implemented, but left here to ensure the numbers stay reserved: */#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 /* arm64 Scalable Vector Extension controls *//* Flag values must be kept in sync with ptrace NT_ARM_SVE interface */#define PR_SVE_SET_VL			50	/* set task vector length */# define PR_SVE_SET_VL_ONEXEC		(1 << 18) /* defer effect until exec */#define PR_SVE_GET_VL			51	/* get task vector length *//* Bits common to PR_SVE_SET_VL and PR_SVE_GET_VL */# define PR_SVE_VL_LEN_MASK		0xffff# define PR_SVE_VL_INHERIT		(1 << 17) /* inherit across exec */ /* 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# define PR_SPEC_INDIRECT_BRANCH	1# define PR_SPEC_L1D_FLUSH		2/* 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)# define PR_SPEC_DISABLE_NOEXEC		(1UL << 4) /* Reset arm64 pointer authentication keys */#define PR_PAC_RESET_KEYS		54# define PR_PAC_APIAKEY			(1UL << 0)# define PR_PAC_APIBKEY			(1UL << 1)# define PR_PAC_APDAKEY			(1UL << 2)# define PR_PAC_APDBKEY			(1UL << 3)# define PR_PAC_APGAKEY			(1UL << 4) /* Tagged user address controls for arm64 */#define PR_SET_TAGGED_ADDR_CTRL		55#define PR_GET_TAGGED_ADDR_CTRL		56# define PR_TAGGED_ADDR_ENABLE		(1UL << 0)/* MTE tag check fault modes */# define PR_MTE_TCF_NONE		0UL# define PR_MTE_TCF_SYNC		(1UL << 1)# define PR_MTE_TCF_ASYNC		(1UL << 2)# define PR_MTE_TCF_MASK		(PR_MTE_TCF_SYNC | PR_MTE_TCF_ASYNC)/* MTE tag inclusion mask */# define PR_MTE_TAG_SHIFT		3# define PR_MTE_TAG_MASK		(0xffffUL << PR_MTE_TAG_SHIFT)/* Unused; kept only for source compatibility */# define PR_MTE_TCF_SHIFT		1 /* Control reclaim behavior when allocating memory */#define PR_SET_IO_FLUSHER		57#define PR_GET_IO_FLUSHER		58 /* Dispatch syscalls to a userspace handler */#define PR_SET_SYSCALL_USER_DISPATCH	59# define PR_SYS_DISPATCH_OFF		0# define PR_SYS_DISPATCH_ON		1/* The control values for the user space selector when dispatch is enabled */# define SYSCALL_DISPATCH_FILTER_ALLOW	0# define SYSCALL_DISPATCH_FILTER_BLOCK	1 /* Set/get enabled arm64 pointer authentication keys */#define PR_PAC_SET_ENABLED_KEYS		60#define PR_PAC_GET_ENABLED_KEYS		61 /* Request the scheduler to share a core */#define PR_SCHED_CORE			62# define PR_SCHED_CORE_GET		0# define PR_SCHED_CORE_CREATE		1 /* create unique core_sched cookie */# define PR_SCHED_CORE_SHARE_TO		2 /* push core_sched cookie to pid */# define PR_SCHED_CORE_SHARE_FROM	3 /* pull core_sched cookie to pid */# define PR_SCHED_CORE_MAX		4# define PR_SCHED_CORE_SCOPE_THREAD		0# define PR_SCHED_CORE_SCOPE_THREAD_GROUP	1# define PR_SCHED_CORE_SCOPE_PROCESS_GROUP	2 /* arm64 Scalable Matrix Extension controls *//* Flag values must be in sync with SVE versions */#define PR_SME_SET_VL			63	/* set task vector length */# define PR_SME_SET_VL_ONEXEC		(1 << 18) /* defer effect until exec */#define PR_SME_GET_VL			64	/* get task vector length *//* Bits common to PR_SME_SET_VL and PR_SME_GET_VL */# define PR_SME_VL_LEN_MASK		0xffff# define PR_SME_VL_INHERIT		(1 << 17) /* inherit across exec */ #define PR_SET_VMA		0x53564d41# define PR_SET_VMA_ANON_NAME		0 #endif /* _LINUX_PRCTL_H */