arch/s390/include/asm/compat.h - third_party/linux - Git at Google

 /* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _ASM_S390X_COMPAT_H
 #define _ASM_S390X_COMPAT_H
 /*
  * Architecture specific compatibility types
  */
 #include <linux/types.h>
 #include <linux/sched.h>
 #include <linux/sched/task_stack.h>
 #include <linux/thread_info.h>

 #define __TYPE_IS_PTR(t) (!__builtin_types_compatible_p( \
 				typeof(0?(__force t)0:0ULL), u64))

 #define __SC_DELOUSE(t,v) ({ \
 	BUILD_BUG_ON(sizeof(t) > 4 && !__TYPE_IS_PTR(t)); \
 	(__force t)(__TYPE_IS_PTR(t) ? ((v) & 0x7fffffff) : (v)); \
 })

 #define PSW32_MASK_PER		0x40000000UL
 #define PSW32_MASK_DAT		0x04000000UL
 #define PSW32_MASK_IO		0x02000000UL
 #define PSW32_MASK_EXT		0x01000000UL
 #define PSW32_MASK_KEY		0x00F00000UL
 #define PSW32_MASK_BASE		0x00080000UL	/* Always one */
 #define PSW32_MASK_MCHECK	0x00040000UL
 #define PSW32_MASK_WAIT		0x00020000UL
 #define PSW32_MASK_PSTATE	0x00010000UL
 #define PSW32_MASK_ASC		0x0000C000UL
 #define PSW32_MASK_CC		0x00003000UL
 #define PSW32_MASK_PM		0x00000f00UL
 #define PSW32_MASK_RI		0x00000080UL

 #define PSW32_MASK_USER		0x0000FF00UL

 #define PSW32_ADDR_AMODE	0x80000000UL
 #define PSW32_ADDR_INSN		0x7FFFFFFFUL

 #define PSW32_DEFAULT_KEY	(((u32) PAGE_DEFAULT_ACC) << 20)

 #define PSW32_ASC_PRIMARY	0x00000000UL
 #define PSW32_ASC_ACCREG	0x00004000UL
 #define PSW32_ASC_SECONDARY	0x00008000UL
 #define PSW32_ASC_HOME		0x0000C000UL

 #define PSW32_USER_BITS (PSW32_MASK_DAT | PSW32_MASK_IO | PSW32_MASK_EXT | \
 			 PSW32_DEFAULT_KEY | PSW32_MASK_BASE | \
 			 PSW32_MASK_MCHECK | PSW32_MASK_PSTATE | \
 			 PSW32_ASC_PRIMARY)

 #define COMPAT_USER_HZ		100
 #define COMPAT_UTS_MACHINE	"s390\0\0\0\0"

 typedef u32		compat_size_t;
 typedef s32		compat_ssize_t;
 typedef s32		compat_clock_t;
 typedef s32		compat_pid_t;
 typedef u16		__compat_uid_t;
 typedef u16		__compat_gid_t;
 typedef u32		__compat_uid32_t;
 typedef u32		__compat_gid32_t;
 typedef u16		compat_mode_t;
 typedef u32		compat_ino_t;
 typedef u16		compat_dev_t;
 typedef s32		compat_off_t;
 typedef s64		compat_loff_t;
 typedef u16		compat_nlink_t;
 typedef u16		compat_ipc_pid_t;
 typedef s32		compat_daddr_t;
 typedef u32		compat_caddr_t;
 typedef __kernel_fsid_t	compat_fsid_t;
 typedef s32		compat_key_t;
 typedef s32		compat_timer_t;

 typedef s32		compat_int_t;
 typedef s32		compat_long_t;
 typedef s64		compat_s64;
 typedef u32		compat_uint_t;
 typedef u32		compat_ulong_t;
 typedef u64		compat_u64;
 typedef u32		compat_uptr_t;

 typedef struct {
 	u32 mask;
 	u32 addr;
 } __aligned(8) psw_compat_t;

 typedef struct {
 	psw_compat_t psw;
 	u32 gprs[NUM_GPRS];
 	u32 acrs[NUM_ACRS];
 	u32 orig_gpr2;
 } s390_compat_regs;

 typedef struct {
 	u32 gprs_high[NUM_GPRS];
 } s390_compat_regs_high;

 struct compat_stat {
 	compat_dev_t	st_dev;
 	u16		__pad1;
 	compat_ino_t	st_ino;
 	compat_mode_t	st_mode;
 	compat_nlink_t	st_nlink;
 	__compat_uid_t	st_uid;
 	__compat_gid_t	st_gid;
 	compat_dev_t	st_rdev;
 	u16		__pad2;
 	u32		st_size;
 	u32		st_blksize;
 	u32		st_blocks;
 	u32		st_atime;
 	u32		st_atime_nsec;
 	u32		st_mtime;
 	u32		st_mtime_nsec;
 	u32		st_ctime;
 	u32		st_ctime_nsec;
 	u32		__unused4;
 	u32		__unused5;
 };

 struct compat_flock {
 	short		l_type;
 	short		l_whence;
 	compat_off_t	l_start;
 	compat_off_t	l_len;
 	compat_pid_t	l_pid;
 };

 #define F_GETLK64       12
 #define F_SETLK64       13
 #define F_SETLKW64      14

 struct compat_flock64 {
 	short		l_type;
 	short		l_whence;
 	compat_loff_t	l_start;
 	compat_loff_t	l_len;
 	compat_pid_t	l_pid;
 };

 struct compat_statfs {
 	u32		f_type;
 	u32		f_bsize;
 	u32		f_blocks;
 	u32		f_bfree;
 	u32		f_bavail;
 	u32		f_files;
 	u32		f_ffree;
 	compat_fsid_t	f_fsid;
 	u32		f_namelen;
 	u32		f_frsize;
 	u32		f_flags;
 	u32		f_spare[4];
 };

 struct compat_statfs64 {
 	u32		f_type;
 	u32		f_bsize;
 	u64		f_blocks;
 	u64		f_bfree;
 	u64		f_bavail;
 	u64		f_files;
 	u64		f_ffree;
 	compat_fsid_t	f_fsid;
 	u32		f_namelen;
 	u32		f_frsize;
 	u32		f_flags;
 	u32		f_spare[4];
 };

 #define COMPAT_RLIM_INFINITY		0xffffffff

 typedef u32		compat_old_sigset_t;	/* at least 32 bits */

 #define _COMPAT_NSIG		64
 #define _COMPAT_NSIG_BPW	32

 typedef u32		compat_sigset_word;

 #define COMPAT_OFF_T_MAX	0x7fffffff

 /*
  * A pointer passed in from user mode. This should not
  * be used for syscall parameters, just declare them
  * as pointers because the syscall entry code will have
  * appropriately converted them already.
  */

 static inline void __user *compat_ptr(compat_uptr_t uptr)
 {
 	return (void __user *)(unsigned long)(uptr & 0x7fffffffUL);
 }

 static inline compat_uptr_t ptr_to_compat(void __user *uptr)
 {
 	return (u32)(unsigned long)uptr;
 }

 #ifdef CONFIG_COMPAT

 static inline int is_compat_task(void)
 {
 	return test_thread_flag(TIF_31BIT);
 }

 static inline void __user *arch_compat_alloc_user_space(long len)
 {
 	unsigned long stack;

 	stack = KSTK_ESP(current);
 	if (is_compat_task())
 		stack &= 0x7fffffffUL;
 	return (void __user *) (stack - len);
 }

 #endif

 struct compat_ipc64_perm {
 	compat_key_t key;
 	__compat_uid32_t uid;
 	__compat_gid32_t gid;
 	__compat_uid32_t cuid;
 	__compat_gid32_t cgid;
 	compat_mode_t mode;
 	unsigned short __pad1;
 	unsigned short seq;
 	unsigned short __pad2;
 	unsigned int __unused1;
 	unsigned int __unused2;
 };

 struct compat_semid64_ds {
 	struct compat_ipc64_perm sem_perm;
 	compat_ulong_t sem_otime;
 	compat_ulong_t sem_otime_high;
 	compat_ulong_t sem_ctime;
 	compat_ulong_t sem_ctime_high;
 	compat_ulong_t sem_nsems;
 	compat_ulong_t __unused1;
 	compat_ulong_t __unused2;
 };

 struct compat_msqid64_ds {
 	struct compat_ipc64_perm msg_perm;
 	compat_ulong_t msg_stime;
 	compat_ulong_t msg_stime_high;
 	compat_ulong_t msg_rtime;
 	compat_ulong_t msg_rtime_high;
 	compat_ulong_t msg_ctime;
 	compat_ulong_t msg_ctime_high;
 	compat_ulong_t msg_cbytes;
 	compat_ulong_t msg_qnum;
 	compat_ulong_t msg_qbytes;
 	compat_pid_t   msg_lspid;
 	compat_pid_t   msg_lrpid;
 	compat_ulong_t __unused1;
 	compat_ulong_t __unused2;
 };

 struct compat_shmid64_ds {
 	struct compat_ipc64_perm shm_perm;
 	compat_size_t  shm_segsz;
 	compat_ulong_t shm_atime;
 	compat_ulong_t shm_atime_high;
 	compat_ulong_t shm_dtime;
 	compat_ulong_t shm_dtime_high;
 	compat_ulong_t shm_ctime;
 	compat_ulong_t shm_ctime_high;
 	compat_pid_t   shm_cpid;
 	compat_pid_t   shm_lpid;
 	compat_ulong_t shm_nattch;
 	compat_ulong_t __unused1;
 	compat_ulong_t __unused2;
 };
 #endif /* _ASM_S390X_COMPAT_H */
	/* SPDX-License-Identifier: GPL-2.0 */
	#ifndef _ASM_S390X_COMPAT_H
	#define _ASM_S390X_COMPAT_H
	/*
	* Architecture specific compatibility types
	*/
	#include <linux/types.h>
	#include <linux/sched.h>
	#include <linux/sched/task_stack.h>
	#include <linux/thread_info.h>

	#define __TYPE_IS_PTR(t) (!__builtin_types_compatible_p( \
	typeof(0?(__force t)0:0ULL), u64))

	#define __SC_DELOUSE(t,v) ({ \
	BUILD_BUG_ON(sizeof(t) > 4 && !__TYPE_IS_PTR(t)); \
	(__force t)(__TYPE_IS_PTR(t) ? ((v) & 0x7fffffff) : (v)); \
	})

	#define PSW32_MASK_PER 0x40000000UL
	#define PSW32_MASK_DAT 0x04000000UL
	#define PSW32_MASK_IO 0x02000000UL
	#define PSW32_MASK_EXT 0x01000000UL
	#define PSW32_MASK_KEY 0x00F00000UL
	#define PSW32_MASK_BASE 0x00080000UL /* Always one */
	#define PSW32_MASK_MCHECK 0x00040000UL
	#define PSW32_MASK_WAIT 0x00020000UL
	#define PSW32_MASK_PSTATE 0x00010000UL
	#define PSW32_MASK_ASC 0x0000C000UL
	#define PSW32_MASK_CC 0x00003000UL
	#define PSW32_MASK_PM 0x00000f00UL
	#define PSW32_MASK_RI 0x00000080UL

	#define PSW32_MASK_USER 0x0000FF00UL

	#define PSW32_ADDR_AMODE 0x80000000UL
	#define PSW32_ADDR_INSN 0x7FFFFFFFUL

	#define PSW32_DEFAULT_KEY (((u32) PAGE_DEFAULT_ACC) << 20)

	#define PSW32_ASC_PRIMARY 0x00000000UL
	#define PSW32_ASC_ACCREG 0x00004000UL
	#define PSW32_ASC_SECONDARY 0x00008000UL
	#define PSW32_ASC_HOME 0x0000C000UL

	#define PSW32_USER_BITS (PSW32_MASK_DAT \| PSW32_MASK_IO \| PSW32_MASK_EXT \| \
	PSW32_DEFAULT_KEY \| PSW32_MASK_BASE \| \
	PSW32_MASK_MCHECK \| PSW32_MASK_PSTATE \| \
	PSW32_ASC_PRIMARY)

	#define COMPAT_USER_HZ 100
	#define COMPAT_UTS_MACHINE "s390\0\0\0\0"

	typedef u32 compat_size_t;
	typedef s32 compat_ssize_t;
	typedef s32 compat_clock_t;
	typedef s32 compat_pid_t;
	typedef u16 __compat_uid_t;
	typedef u16 __compat_gid_t;
	typedef u32 __compat_uid32_t;
	typedef u32 __compat_gid32_t;
	typedef u16 compat_mode_t;
	typedef u32 compat_ino_t;
	typedef u16 compat_dev_t;
	typedef s32 compat_off_t;
	typedef s64 compat_loff_t;
	typedef u16 compat_nlink_t;
	typedef u16 compat_ipc_pid_t;
	typedef s32 compat_daddr_t;
	typedef u32 compat_caddr_t;
	typedef __kernel_fsid_t compat_fsid_t;
	typedef s32 compat_key_t;
	typedef s32 compat_timer_t;

	typedef s32 compat_int_t;
	typedef s32 compat_long_t;
	typedef s64 compat_s64;
	typedef u32 compat_uint_t;
	typedef u32 compat_ulong_t;
	typedef u64 compat_u64;
	typedef u32 compat_uptr_t;

	typedef struct {
	u32 mask;
	u32 addr;
	} __aligned(8) psw_compat_t;

	typedef struct {
	psw_compat_t psw;
	u32 gprs[NUM_GPRS];
	u32 acrs[NUM_ACRS];
	u32 orig_gpr2;
	} s390_compat_regs;

	typedef struct {
	u32 gprs_high[NUM_GPRS];
	} s390_compat_regs_high;

	struct compat_stat {
	compat_dev_t st_dev;
	u16 __pad1;
	compat_ino_t st_ino;
	compat_mode_t st_mode;
	compat_nlink_t st_nlink;
	__compat_uid_t st_uid;
	__compat_gid_t st_gid;
	compat_dev_t st_rdev;
	u16 __pad2;
	u32 st_size;
	u32 st_blksize;
	u32 st_blocks;
	u32 st_atime;
	u32 st_atime_nsec;
	u32 st_mtime;
	u32 st_mtime_nsec;
	u32 st_ctime;
	u32 st_ctime_nsec;
	u32 __unused4;
	u32 __unused5;
	};

	struct compat_flock {
	short l_type;
	short l_whence;
	compat_off_t l_start;
	compat_off_t l_len;
	compat_pid_t l_pid;
	};

	#define F_GETLK64 12
	#define F_SETLK64 13
	#define F_SETLKW64 14

	struct compat_flock64 {
	short l_type;
	short l_whence;
	compat_loff_t l_start;
	compat_loff_t l_len;
	compat_pid_t l_pid;
	};

	struct compat_statfs {
	u32 f_type;
	u32 f_bsize;
	u32 f_blocks;
	u32 f_bfree;
	u32 f_bavail;
	u32 f_files;
	u32 f_ffree;
	compat_fsid_t f_fsid;
	u32 f_namelen;
	u32 f_frsize;
	u32 f_flags;
	u32 f_spare[4];
	};

	struct compat_statfs64 {
	u32 f_type;
	u32 f_bsize;
	u64 f_blocks;
	u64 f_bfree;
	u64 f_bavail;
	u64 f_files;
	u64 f_ffree;
	compat_fsid_t f_fsid;
	u32 f_namelen;
	u32 f_frsize;
	u32 f_flags;
	u32 f_spare[4];
	};

	#define COMPAT_RLIM_INFINITY 0xffffffff

	typedef u32 compat_old_sigset_t; /* at least 32 bits */

	#define _COMPAT_NSIG 64
	#define _COMPAT_NSIG_BPW 32

	typedef u32 compat_sigset_word;

	#define COMPAT_OFF_T_MAX 0x7fffffff

	/*
	* A pointer passed in from user mode. This should not
	* be used for syscall parameters, just declare them
	* as pointers because the syscall entry code will have
	* appropriately converted them already.
	*/

	static inline void __user *compat_ptr(compat_uptr_t uptr)
	{
	return (void __user *)(unsigned long)(uptr & 0x7fffffffUL);
	}

	static inline compat_uptr_t ptr_to_compat(void __user *uptr)
	{
	return (u32)(unsigned long)uptr;
	}

	#ifdef CONFIG_COMPAT

	static inline int is_compat_task(void)
	{
	return test_thread_flag(TIF_31BIT);
	}

	static inline void __user *arch_compat_alloc_user_space(long len)
	{
	unsigned long stack;

	stack = KSTK_ESP(current);
	if (is_compat_task())
	stack &= 0x7fffffffUL;
	return (void __user *) (stack - len);
	}

	#endif

	struct compat_ipc64_perm {
	compat_key_t key;
	__compat_uid32_t uid;
	__compat_gid32_t gid;
	__compat_uid32_t cuid;
	__compat_gid32_t cgid;
	compat_mode_t mode;
	unsigned short __pad1;
	unsigned short seq;
	unsigned short __pad2;
	unsigned int __unused1;
	unsigned int __unused2;
	};

	struct compat_semid64_ds {
	struct compat_ipc64_perm sem_perm;
	compat_ulong_t sem_otime;
	compat_ulong_t sem_otime_high;
	compat_ulong_t sem_ctime;
	compat_ulong_t sem_ctime_high;
	compat_ulong_t sem_nsems;
	compat_ulong_t __unused1;
	compat_ulong_t __unused2;
	};

	struct compat_msqid64_ds {
	struct compat_ipc64_perm msg_perm;
	compat_ulong_t msg_stime;
	compat_ulong_t msg_stime_high;
	compat_ulong_t msg_rtime;
	compat_ulong_t msg_rtime_high;
	compat_ulong_t msg_ctime;
	compat_ulong_t msg_ctime_high;
	compat_ulong_t msg_cbytes;
	compat_ulong_t msg_qnum;
	compat_ulong_t msg_qbytes;
	compat_pid_t msg_lspid;
	compat_pid_t msg_lrpid;
	compat_ulong_t __unused1;
	compat_ulong_t __unused2;
	};

	struct compat_shmid64_ds {
	struct compat_ipc64_perm shm_perm;
	compat_size_t shm_segsz;
	compat_ulong_t shm_atime;
	compat_ulong_t shm_atime_high;
	compat_ulong_t shm_dtime;
	compat_ulong_t shm_dtime_high;
	compat_ulong_t shm_ctime;
	compat_ulong_t shm_ctime_high;
	compat_pid_t shm_cpid;
	compat_pid_t shm_lpid;
	compat_ulong_t shm_nattch;
	compat_ulong_t __unused1;
	compat_ulong_t __unused2;
	};
	#endif /* _ASM_S390X_COMPAT_H */