arch/mips/include/asm/compat.h - arm/linux - Git at Google

 /* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _ASM_COMPAT_H
 #define _ASM_COMPAT_H
 /*
  * Architecture specific compatibility types
  */
 #include <linux/thread_info.h>
 #include <linux/types.h>
 #include <asm/page.h>
 #include <asm/ptrace.h>

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

 typedef u32		compat_size_t;
 typedef s32		compat_ssize_t;
 typedef s32		compat_time_t;
 typedef s32		compat_clock_t;
 typedef s32		compat_suseconds_t;

 typedef s32		compat_pid_t;
 typedef s32		__compat_uid_t;
 typedef s32		__compat_gid_t;
 typedef __compat_uid_t	__compat_uid32_t;
 typedef __compat_gid_t	__compat_gid32_t;
 typedef u32		compat_mode_t;
 typedef u32		compat_ino_t;
 typedef u32		compat_dev_t;
 typedef s32		compat_off_t;
 typedef s64		compat_loff_t;
 typedef u32		compat_nlink_t;
 typedef s32		compat_ipc_pid_t;
 typedef s32		compat_daddr_t;
 typedef s32		compat_caddr_t;
 typedef struct {
 	s32	val[2];
 } compat_fsid_t;
 typedef s32		compat_timer_t;
 typedef s32		compat_key_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;

 struct compat_timespec {
 	compat_time_t	tv_sec;
 	s32		tv_nsec;
 };

 struct compat_timeval {
 	compat_time_t	tv_sec;
 	s32		tv_usec;
 };

 struct compat_stat {
 	compat_dev_t	st_dev;
 	s32		st_pad1[3];
 	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;
 	s32		st_pad2[2];
 	compat_off_t	st_size;
 	s32		st_pad3;
 	compat_time_t	st_atime;
 	s32		st_atime_nsec;
 	compat_time_t	st_mtime;
 	s32		st_mtime_nsec;
 	compat_time_t	st_ctime;
 	s32		st_ctime_nsec;
 	s32		st_blksize;
 	s32		st_blocks;
 	s32		st_pad4[14];
 };

 struct compat_flock {
 	short		l_type;
 	short		l_whence;
 	compat_off_t	l_start;
 	compat_off_t	l_len;
 	s32		l_sysid;
 	compat_pid_t	l_pid;
 	short		__unused;
 	s32		pad[4];
 };

 #define F_GETLK64	33
 #define F_SETLK64	34
 #define F_SETLKW64	35

 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 {
 	int		f_type;
 	int		f_bsize;
 	int		f_frsize;
 	int		f_blocks;
 	int		f_bfree;
 	int		f_files;
 	int		f_ffree;
 	int		f_bavail;
 	compat_fsid_t	f_fsid;
 	int		f_namelen;
 	int		f_flags;
 	int		f_spare[5];
 };

 #define COMPAT_RLIM_INFINITY	0x7fffffffUL

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

 #define _COMPAT_NSIG		128		/* Don't ask !$@#% ...	*/
 #define _COMPAT_NSIG_BPW	32

 typedef u32		compat_sigset_word;

 typedef union compat_sigval {
 	compat_int_t	sival_int;
 	compat_uptr_t	sival_ptr;
 } compat_sigval_t;

 /* Can't use the generic version because si_code and si_errno are swapped */

 #define SI_PAD_SIZE32	(128/sizeof(int) - 3)

 typedef struct compat_siginfo {
 	int si_signo;
 	int si_code;
 	int si_errno;

 	union {
 		int _pad[128 / sizeof(int) - 3];

 		/* kill() */
 		struct {
 			compat_pid_t _pid;	/* sender's pid */
 			__compat_uid32_t _uid;	/* sender's uid */
 		} _kill;

 		/* POSIX.1b timers */
 		struct {
 			compat_timer_t _tid;	/* timer id */
 			int _overrun;		/* overrun count */
 			compat_sigval_t _sigval;	/* same as below */
 		} _timer;

 		/* POSIX.1b signals */
 		struct {
 			compat_pid_t _pid;	/* sender's pid */
 			__compat_uid32_t _uid;	/* sender's uid */
 			compat_sigval_t _sigval;
 		} _rt;

 		/* SIGCHLD */
 		struct {
 			compat_pid_t _pid;	/* which child */
 			__compat_uid32_t _uid;	/* sender's uid */
 			int _status;		/* exit code */
 			compat_clock_t _utime;
 			compat_clock_t _stime;
 		} _sigchld;

 		/* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
 		struct {
 			compat_uptr_t _addr;	/* faulting insn/memory ref. */
 #ifdef __ARCH_SI_TRAPNO
 			int _trapno;	/* TRAP # which caused the signal */
 #endif
 			short _addr_lsb; /* LSB of the reported address */
 			struct {
 				compat_uptr_t _lower;
 				compat_uptr_t _upper;
 			} _addr_bnd;
 		} _sigfault;

 		/* SIGPOLL */
 		struct {
 			compat_long_t _band; /* POLL_IN, POLL_OUT, POLL_MSG */
 			int _fd;
 		} _sigpoll;

 		struct {
 			compat_uptr_t _call_addr; /* calling insn */
 			int _syscall;	/* triggering system call number */
 			compat_uint_t _arch;	/* AUDIT_ARCH_* of syscall */
 		} _sigsys;
 	} _sifields;
 } compat_siginfo_t;

 #define COMPAT_OFF_T_MAX	0x7fffffff
 #define COMPAT_LOFF_T_MAX	0x7fffffffffffffffL

 /*
  * 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)
 {
 	/* cast to a __user pointer via "unsigned long" makes sparse happy */
 	return (void __user *)(unsigned long)(long)uptr;
 }

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

 static inline void __user *arch_compat_alloc_user_space(long len)
 {
 	struct pt_regs *regs = (struct pt_regs *)
 		((unsigned long) current_thread_info() + THREAD_SIZE - 32) - 1;

 	return (void __user *) (regs->regs[29] - len);
 }

 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 seq;
 	unsigned short __pad2;
 	compat_ulong_t __unused1;
 	compat_ulong_t __unused2;
 };

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

 struct compat_msqid64_ds {
 	struct compat_ipc64_perm msg_perm;
 #ifndef CONFIG_CPU_LITTLE_ENDIAN
 	compat_ulong_t	__unused1;
 #endif
 	compat_time_t	msg_stime;
 #ifdef CONFIG_CPU_LITTLE_ENDIAN
 	compat_ulong_t	__unused1;
 #endif
 #ifndef CONFIG_CPU_LITTLE_ENDIAN
 	compat_ulong_t	__unused2;
 #endif
 	compat_time_t	msg_rtime;
 #ifdef CONFIG_CPU_LITTLE_ENDIAN
 	compat_ulong_t	__unused2;
 #endif
 #ifndef CONFIG_CPU_LITTLE_ENDIAN
 	compat_ulong_t	__unused3;
 #endif
 	compat_time_t	msg_ctime;
 #ifdef CONFIG_CPU_LITTLE_ENDIAN
 	compat_ulong_t	__unused3;
 #endif
 	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	__unused4;
 	compat_ulong_t	__unused5;
 };

 struct compat_shmid64_ds {
 	struct compat_ipc64_perm shm_perm;
 	compat_size_t	shm_segsz;
 	compat_time_t	shm_atime;
 	compat_time_t	shm_dtime;
 	compat_time_t	shm_ctime;
 	compat_pid_t	shm_cpid;
 	compat_pid_t	shm_lpid;
 	compat_ulong_t	shm_nattch;
 	compat_ulong_t	__unused1;
 	compat_ulong_t	__unused2;
 };

 /* MIPS has unusual order of fields in stack_t */
 typedef struct compat_sigaltstack {
 	compat_uptr_t			ss_sp;
 	compat_size_t			ss_size;
 	int				ss_flags;
 } compat_stack_t;
 #define compat_sigaltstack compat_sigaltstack

 static inline int is_compat_task(void)
 {
 	return test_thread_flag(TIF_32BIT_ADDR);
 }

 #endif /* _ASM_COMPAT_H */
	/* SPDX-License-Identifier: GPL-2.0 */
	#ifndef _ASM_COMPAT_H
	#define _ASM_COMPAT_H
	/*
	* Architecture specific compatibility types
	*/
	#include <linux/thread_info.h>
	#include <linux/types.h>
	#include <asm/page.h>
	#include <asm/ptrace.h>

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

	typedef u32 compat_size_t;
	typedef s32 compat_ssize_t;
	typedef s32 compat_time_t;
	typedef s32 compat_clock_t;
	typedef s32 compat_suseconds_t;

	typedef s32 compat_pid_t;
	typedef s32 __compat_uid_t;
	typedef s32 __compat_gid_t;
	typedef __compat_uid_t __compat_uid32_t;
	typedef __compat_gid_t __compat_gid32_t;
	typedef u32 compat_mode_t;
	typedef u32 compat_ino_t;
	typedef u32 compat_dev_t;
	typedef s32 compat_off_t;
	typedef s64 compat_loff_t;
	typedef u32 compat_nlink_t;
	typedef s32 compat_ipc_pid_t;
	typedef s32 compat_daddr_t;
	typedef s32 compat_caddr_t;
	typedef struct {
	s32 val[2];
	} compat_fsid_t;
	typedef s32 compat_timer_t;
	typedef s32 compat_key_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;

	struct compat_timespec {
	compat_time_t tv_sec;
	s32 tv_nsec;
	};

	struct compat_timeval {
	compat_time_t tv_sec;
	s32 tv_usec;
	};

	struct compat_stat {
	compat_dev_t st_dev;
	s32 st_pad1[3];
	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;
	s32 st_pad2[2];
	compat_off_t st_size;
	s32 st_pad3;
	compat_time_t st_atime;
	s32 st_atime_nsec;
	compat_time_t st_mtime;
	s32 st_mtime_nsec;
	compat_time_t st_ctime;
	s32 st_ctime_nsec;
	s32 st_blksize;
	s32 st_blocks;
	s32 st_pad4[14];
	};

	struct compat_flock {
	short l_type;
	short l_whence;
	compat_off_t l_start;
	compat_off_t l_len;
	s32 l_sysid;
	compat_pid_t l_pid;
	short __unused;
	s32 pad[4];
	};

	#define F_GETLK64 33
	#define F_SETLK64 34
	#define F_SETLKW64 35

	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 {
	int f_type;
	int f_bsize;
	int f_frsize;
	int f_blocks;
	int f_bfree;
	int f_files;
	int f_ffree;
	int f_bavail;
	compat_fsid_t f_fsid;
	int f_namelen;
	int f_flags;
	int f_spare[5];
	};

	#define COMPAT_RLIM_INFINITY 0x7fffffffUL

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

	#define _COMPAT_NSIG 128 /* Don't ask !$@#% ... */
	#define _COMPAT_NSIG_BPW 32

	typedef u32 compat_sigset_word;

	typedef union compat_sigval {
	compat_int_t sival_int;
	compat_uptr_t sival_ptr;
	} compat_sigval_t;

	/* Can't use the generic version because si_code and si_errno are swapped */

	#define SI_PAD_SIZE32 (128/sizeof(int) - 3)

	typedef struct compat_siginfo {
	int si_signo;
	int si_code;
	int si_errno;

	union {
	int _pad[128 / sizeof(int) - 3];

	/* kill() */
	struct {
	compat_pid_t _pid; /* sender's pid */
	__compat_uid32_t _uid; /* sender's uid */
	} _kill;

	/* POSIX.1b timers */
	struct {
	compat_timer_t _tid; /* timer id */
	int _overrun; /* overrun count */
	compat_sigval_t _sigval; /* same as below */
	} _timer;

	/* POSIX.1b signals */
	struct {
	compat_pid_t _pid; /* sender's pid */
	__compat_uid32_t _uid; /* sender's uid */
	compat_sigval_t _sigval;
	} _rt;

	/* SIGCHLD */
	struct {
	compat_pid_t _pid; /* which child */
	__compat_uid32_t _uid; /* sender's uid */
	int _status; /* exit code */
	compat_clock_t _utime;
	compat_clock_t _stime;
	} _sigchld;

	/* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
	struct {
	compat_uptr_t _addr; /* faulting insn/memory ref. */
	#ifdef __ARCH_SI_TRAPNO
	int _trapno; /* TRAP # which caused the signal */
	#endif
	short _addr_lsb; /* LSB of the reported address */
	struct {
	compat_uptr_t _lower;
	compat_uptr_t _upper;
	} _addr_bnd;
	} _sigfault;

	/* SIGPOLL */
	struct {
	compat_long_t _band; /* POLL_IN, POLL_OUT, POLL_MSG */
	int _fd;
	} _sigpoll;

	struct {
	compat_uptr_t _call_addr; /* calling insn */
	int _syscall; /* triggering system call number */
	compat_uint_t _arch; /* AUDIT_ARCH_* of syscall */
	} _sigsys;
	} _sifields;
	} compat_siginfo_t;

	#define COMPAT_OFF_T_MAX 0x7fffffff
	#define COMPAT_LOFF_T_MAX 0x7fffffffffffffffL

	/*
	* 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)
	{
	/* cast to a __user pointer via "unsigned long" makes sparse happy */
	return (void __user *)(unsigned long)(long)uptr;
	}

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

	static inline void __user *arch_compat_alloc_user_space(long len)
	{
	struct pt_regs regs = (struct pt_regs )
	((unsigned long) current_thread_info() + THREAD_SIZE - 32) - 1;

	return (void __user *) (regs->regs[29] - len);
	}

	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 seq;
	unsigned short __pad2;
	compat_ulong_t __unused1;
	compat_ulong_t __unused2;
	};

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

	struct compat_msqid64_ds {
	struct compat_ipc64_perm msg_perm;
	#ifndef CONFIG_CPU_LITTLE_ENDIAN
	compat_ulong_t __unused1;
	#endif
	compat_time_t msg_stime;
	#ifdef CONFIG_CPU_LITTLE_ENDIAN
	compat_ulong_t __unused1;
	#endif
	#ifndef CONFIG_CPU_LITTLE_ENDIAN
	compat_ulong_t __unused2;
	#endif
	compat_time_t msg_rtime;
	#ifdef CONFIG_CPU_LITTLE_ENDIAN
	compat_ulong_t __unused2;
	#endif
	#ifndef CONFIG_CPU_LITTLE_ENDIAN
	compat_ulong_t __unused3;
	#endif
	compat_time_t msg_ctime;
	#ifdef CONFIG_CPU_LITTLE_ENDIAN
	compat_ulong_t __unused3;
	#endif
	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 __unused4;
	compat_ulong_t __unused5;
	};

	struct compat_shmid64_ds {
	struct compat_ipc64_perm shm_perm;
	compat_size_t shm_segsz;
	compat_time_t shm_atime;
	compat_time_t shm_dtime;
	compat_time_t shm_ctime;
	compat_pid_t shm_cpid;
	compat_pid_t shm_lpid;
	compat_ulong_t shm_nattch;
	compat_ulong_t __unused1;
	compat_ulong_t __unused2;
	};

	/* MIPS has unusual order of fields in stack_t */
	typedef struct compat_sigaltstack {
	compat_uptr_t ss_sp;
	compat_size_t ss_size;
	int ss_flags;
	} compat_stack_t;
	#define compat_sigaltstack compat_sigaltstack

	static inline int is_compat_task(void)
	{
	return test_thread_flag(TIF_32BIT_ADDR);
	}

	#endif /* _ASM_COMPAT_H */