arch/sparc/include/asm/compat.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ASM_SPARC64_COMPAT_H
   3 #define _ASM_SPARC64_COMPAT_H
   4 /*
   5  * Architecture specific compatibility types
   6  */
   7 #include <linux/types.h>
   8
   9 #define COMPAT_USER_HZ          100
  10 #define COMPAT_UTS_MACHINE      "sparc\0\0"
  11
  12 typedef u32             compat_size_t;
  13 typedef s32             compat_ssize_t;
  14 typedef s32             compat_time_t;
  15 typedef s32             compat_clock_t;
  16 typedef s32             compat_pid_t;
  17 typedef u16             __compat_uid_t;
  18 typedef u16             __compat_gid_t;
  19 typedef u32             __compat_uid32_t;
  20 typedef u32             __compat_gid32_t;
  21 typedef u16             compat_mode_t;
  22 typedef u32             compat_ino_t;
  23 typedef u16             compat_dev_t;
  24 typedef s32             compat_off_t;
  25 typedef s64             compat_loff_t;
  26 typedef s16             compat_nlink_t;
  27 typedef u16             compat_ipc_pid_t;
  28 typedef s32             compat_daddr_t;
  29 typedef u32             compat_caddr_t;
  30 typedef __kernel_fsid_t compat_fsid_t;
  31 typedef s32             compat_key_t;
  32 typedef s32             compat_timer_t;
  33
  34 typedef s32             compat_int_t;
  35 typedef s32             compat_long_t;
  36 typedef s64             compat_s64;
  37 typedef u32             compat_uint_t;
  38 typedef u32             compat_ulong_t;
  39 typedef u64             compat_u64;
  40 typedef u32             compat_uptr_t;
  41
  42 struct compat_timespec {
  43         compat_time_t   tv_sec;
  44         s32             tv_nsec;
  45 };
  46
  47 struct compat_timeval {
  48         compat_time_t   tv_sec;
  49         s32             tv_usec;
  50 };
  51
  52 struct compat_stat {
  53         compat_dev_t    st_dev;
  54         compat_ino_t    st_ino;
  55         compat_mode_t   st_mode;
  56         compat_nlink_t  st_nlink;
  57         __compat_uid_t  st_uid;
  58         __compat_gid_t  st_gid;
  59         compat_dev_t    st_rdev;
  60         compat_off_t    st_size;
  61         compat_time_t   st_atime;
  62         compat_ulong_t  st_atime_nsec;
  63         compat_time_t   st_mtime;
  64         compat_ulong_t  st_mtime_nsec;
  65         compat_time_t   st_ctime;
  66         compat_ulong_t  st_ctime_nsec;
  67         compat_off_t    st_blksize;
  68         compat_off_t    st_blocks;
  69         u32             __unused4[2];
  70 };
  71
  72 struct compat_stat64 {
  73         unsigned long long      st_dev;
  74
  75         unsigned long long      st_ino;
  76
  77         unsigned int    st_mode;
  78         unsigned int    st_nlink;
  79
  80         unsigned int    st_uid;
  81         unsigned int    st_gid;
  82
  83         unsigned long long      st_rdev;
  84
  85         unsigned char   __pad3[8];
  86
  87         long long       st_size;
  88         unsigned int    st_blksize;
  89
  90         unsigned char   __pad4[8];
  91         unsigned int    st_blocks;
  92
  93         unsigned int    st_atime;
  94         unsigned int    st_atime_nsec;
  95
  96         unsigned int    st_mtime;
  97         unsigned int    st_mtime_nsec;
  98
  99         unsigned int    st_ctime;
 100         unsigned int    st_ctime_nsec;
 101
 102         unsigned int    __unused4;
 103         unsigned int    __unused5;
 104 };
 105
 106 struct compat_flock {
 107         short           l_type;
 108         short           l_whence;
 109         compat_off_t    l_start;
 110         compat_off_t    l_len;
 111         compat_pid_t    l_pid;
 112         short           __unused;
 113 };
 114
 115 #define F_GETLK64       12
 116 #define F_SETLK64       13
 117 #define F_SETLKW64      14
 118
 119 struct compat_flock64 {
 120         short           l_type;
 121         short           l_whence;
 122         compat_loff_t   l_start;
 123         compat_loff_t   l_len;
 124         compat_pid_t    l_pid;
 125         short           __unused;
 126 };
 127
 128 struct compat_statfs {
 129         int             f_type;
 130         int             f_bsize;
 131         int             f_blocks;
 132         int             f_bfree;
 133         int             f_bavail;
 134         int             f_files;
 135         int             f_ffree;
 136         compat_fsid_t   f_fsid;
 137         int             f_namelen;      /* SunOS ignores this field. */
 138         int             f_frsize;
 139         int             f_flags;
 140         int             f_spare[4];
 141 };
 142
 143 #define COMPAT_RLIM_INFINITY 0x7fffffff
 144
 145 typedef u32             compat_old_sigset_t;
 146
 147 #define _COMPAT_NSIG            64
 148 #define _COMPAT_NSIG_BPW        32
 149
 150 typedef u32             compat_sigset_word;
 151
 152 typedef union compat_sigval {
 153         compat_int_t    sival_int;
 154         compat_uptr_t   sival_ptr;
 155 } compat_sigval_t;
 156
 157 #define SI_PAD_SIZE32   (128/sizeof(int) - 3)
 158
 159 typedef struct compat_siginfo {
 160         int si_signo;
 161         int si_errno;
 162         int si_code;
 163
 164         union {
 165                 int _pad[SI_PAD_SIZE32];
 166
 167                 /* kill() */
 168                 struct {
 169                         compat_pid_t _pid;              /* sender's pid */
 170                         unsigned int _uid;              /* sender's uid */
 171                 } _kill;
 172
 173                 /* POSIX.1b timers */
 174                 struct {
 175                         compat_timer_t _tid;            /* timer id */
 176                         int _overrun;                   /* overrun count */
 177                         compat_sigval_t _sigval;        /* same as below */
 178                         int _sys_private;       /* not to be passed to user */
 179                 } _timer;
 180
 181                 /* POSIX.1b signals */
 182                 struct {
 183                         compat_pid_t _pid;              /* sender's pid */
 184                         unsigned int _uid;              /* sender's uid */
 185                         compat_sigval_t _sigval;
 186                 } _rt;
 187
 188                 /* SIGCHLD */
 189                 struct {
 190                         compat_pid_t _pid;              /* which child */
 191                         unsigned int _uid;              /* sender's uid */
 192                         int _status;                    /* exit code */
 193                         compat_clock_t _utime;
 194                         compat_clock_t _stime;
 195                 } _sigchld;
 196
 197                 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS, SIGEMT */
 198                 struct {
 199                         u32 _addr; /* faulting insn/memory ref. */
 200                         int _trapno;
 201                 } _sigfault;
 202
 203                 /* SIGPOLL */
 204                 struct {
 205                         int _band;      /* POLL_IN, POLL_OUT, POLL_MSG */
 206                         int _fd;
 207                 } _sigpoll;
 208         } _sifields;
 209 } compat_siginfo_t;
 210
 211 #define COMPAT_OFF_T_MAX        0x7fffffff
 212
 213 /*
 214  * A pointer passed in from user mode. This should not
 215  * be used for syscall parameters, just declare them
 216  * as pointers because the syscall entry code will have
 217  * appropriately converted them already.
 218  */
 219
 220 static inline void __user *compat_ptr(compat_uptr_t uptr)
 221 {
 222         return (void __user *)(unsigned long)uptr;
 223 }
 224
 225 static inline compat_uptr_t ptr_to_compat(void __user *uptr)
 226 {
 227         return (u32)(unsigned long)uptr;
 228 }
 229
 230 static inline void __user *arch_compat_alloc_user_space(long len)
 231 {
 232         struct pt_regs *regs = current_thread_info()->kregs;
 233         unsigned long usp = regs->u_regs[UREG_I6];
 234
 235         if (test_thread_64bit_stack(usp))
 236                 usp += STACK_BIAS;
 237
 238         if (test_thread_flag(TIF_32BIT))
 239                 usp &= 0xffffffffUL;
 240
 241         usp -= len;
 242         usp &= ~0x7UL;
 243
 244         return (void __user *) usp;
 245 }
 246
 247 struct compat_ipc64_perm {
 248         compat_key_t key;
 249         __compat_uid32_t uid;
 250         __compat_gid32_t gid;
 251         __compat_uid32_t cuid;
 252         __compat_gid32_t cgid;
 253         unsigned short __pad1;
 254         compat_mode_t mode;
 255         unsigned short __pad2;
 256         unsigned short seq;
 257         unsigned long __unused1;        /* yes they really are 64bit pads */
 258         unsigned long __unused2;
 259 };
 260
 261 struct compat_semid64_ds {
 262         struct compat_ipc64_perm sem_perm;
 263         unsigned int    __pad1;
 264         compat_time_t   sem_otime;
 265         unsigned int    __pad2;
 266         compat_time_t   sem_ctime;
 267         u32             sem_nsems;
 268         u32             __unused1;
 269         u32             __unused2;
 270 };
 271
 272 struct compat_msqid64_ds {
 273         struct compat_ipc64_perm msg_perm;
 274         unsigned int    __pad1;
 275         compat_time_t   msg_stime;
 276         unsigned int    __pad2;
 277         compat_time_t   msg_rtime;
 278         unsigned int    __pad3;
 279         compat_time_t   msg_ctime;
 280         unsigned int    msg_cbytes;
 281         unsigned int    msg_qnum;
 282         unsigned int    msg_qbytes;
 283         compat_pid_t    msg_lspid;
 284         compat_pid_t    msg_lrpid;
 285         unsigned int    __unused1;
 286         unsigned int    __unused2;
 287 };
 288
 289 struct compat_shmid64_ds {
 290         struct compat_ipc64_perm shm_perm;
 291         unsigned int    __pad1;
 292         compat_time_t   shm_atime;
 293         unsigned int    __pad2;
 294         compat_time_t   shm_dtime;
 295         unsigned int    __pad3;
 296         compat_time_t   shm_ctime;
 297         compat_size_t   shm_segsz;
 298         compat_pid_t    shm_cpid;
 299         compat_pid_t    shm_lpid;
 300         unsigned int    shm_nattch;
 301         unsigned int    __unused1;
 302         unsigned int    __unused2;
 303 };
 304
 305 static inline int is_compat_task(void)
 306 {
 307         return test_thread_flag(TIF_32BIT);
 308 }
 309
 310 static inline bool in_compat_syscall(void)
 311 {
 312         /* Vector 0x110 is LINUX_32BIT_SYSCALL_TRAP */
 313         return pt_regs_trap_type(current_pt_regs()) == 0x110;
 314 }
 315 #define in_compat_syscall in_compat_syscall
 316
 317 #endif /* _ASM_SPARC64_COMPAT_H */