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_clock_t;
  15 typedef s32             compat_pid_t;
  16 typedef u16             __compat_uid_t;
  17 typedef u16             __compat_gid_t;
  18 typedef u32             __compat_uid32_t;
  19 typedef u32             __compat_gid32_t;
  20 typedef u16             compat_mode_t;
  21 typedef u32             compat_ino_t;
  22 typedef u16             compat_dev_t;
  23 typedef s32             compat_off_t;
  24 typedef s64             compat_loff_t;
  25 typedef s16             compat_nlink_t;
  26 typedef u16             compat_ipc_pid_t;
  27 typedef s32             compat_daddr_t;
  28 typedef u32             compat_caddr_t;
  29 typedef __kernel_fsid_t compat_fsid_t;
  30 typedef s32             compat_key_t;
  31 typedef s32             compat_timer_t;
  32
  33 typedef s32             compat_int_t;
  34 typedef s32             compat_long_t;
  35 typedef s64             compat_s64;
  36 typedef u32             compat_uint_t;
  37 typedef u32             compat_ulong_t;
  38 typedef u64             compat_u64;
  39 typedef u32             compat_uptr_t;
  40
  41 struct compat_stat {
  42         compat_dev_t    st_dev;
  43         compat_ino_t    st_ino;
  44         compat_mode_t   st_mode;
  45         compat_nlink_t  st_nlink;
  46         __compat_uid_t  st_uid;
  47         __compat_gid_t  st_gid;
  48         compat_dev_t    st_rdev;
  49         compat_off_t    st_size;
  50         compat_time_t   st_atime;
  51         compat_ulong_t  st_atime_nsec;
  52         compat_time_t   st_mtime;
  53         compat_ulong_t  st_mtime_nsec;
  54         compat_time_t   st_ctime;
  55         compat_ulong_t  st_ctime_nsec;
  56         compat_off_t    st_blksize;
  57         compat_off_t    st_blocks;
  58         u32             __unused4[2];
  59 };
  60
  61 struct compat_stat64 {
  62         unsigned long long      st_dev;
  63
  64         unsigned long long      st_ino;
  65
  66         unsigned int    st_mode;
  67         unsigned int    st_nlink;
  68
  69         unsigned int    st_uid;
  70         unsigned int    st_gid;
  71
  72         unsigned long long      st_rdev;
  73
  74         unsigned char   __pad3[8];
  75
  76         long long       st_size;
  77         unsigned int    st_blksize;
  78
  79         unsigned char   __pad4[8];
  80         unsigned int    st_blocks;
  81
  82         unsigned int    st_atime;
  83         unsigned int    st_atime_nsec;
  84
  85         unsigned int    st_mtime;
  86         unsigned int    st_mtime_nsec;
  87
  88         unsigned int    st_ctime;
  89         unsigned int    st_ctime_nsec;
  90
  91         unsigned int    __unused4;
  92         unsigned int    __unused5;
  93 };
  94
  95 struct compat_flock {
  96         short           l_type;
  97         short           l_whence;
  98         compat_off_t    l_start;
  99         compat_off_t    l_len;
 100         compat_pid_t    l_pid;
 101         short           __unused;
 102 };
 103
 104 #define F_GETLK64       12
 105 #define F_SETLK64       13
 106 #define F_SETLKW64      14
 107
 108 struct compat_flock64 {
 109         short           l_type;
 110         short           l_whence;
 111         compat_loff_t   l_start;
 112         compat_loff_t   l_len;
 113         compat_pid_t    l_pid;
 114         short           __unused;
 115 };
 116
 117 struct compat_statfs {
 118         int             f_type;
 119         int             f_bsize;
 120         int             f_blocks;
 121         int             f_bfree;
 122         int             f_bavail;
 123         int             f_files;
 124         int             f_ffree;
 125         compat_fsid_t   f_fsid;
 126         int             f_namelen;      /* SunOS ignores this field. */
 127         int             f_frsize;
 128         int             f_flags;
 129         int             f_spare[4];
 130 };
 131
 132 #define COMPAT_RLIM_INFINITY 0x7fffffff
 133
 134 typedef u32             compat_old_sigset_t;
 135
 136 #define _COMPAT_NSIG            64
 137 #define _COMPAT_NSIG_BPW        32
 138
 139 typedef u32             compat_sigset_word;
 140
 141 #define COMPAT_OFF_T_MAX        0x7fffffff
 142
 143 /*
 144  * A pointer passed in from user mode. This should not
 145  * be used for syscall parameters, just declare them
 146  * as pointers because the syscall entry code will have
 147  * appropriately converted them already.
 148  */
 149
 150 static inline void __user *compat_ptr(compat_uptr_t uptr)
 151 {
 152         return (void __user *)(unsigned long)uptr;
 153 }
 154
 155 static inline compat_uptr_t ptr_to_compat(void __user *uptr)
 156 {
 157         return (u32)(unsigned long)uptr;
 158 }
 159
 160 #ifdef CONFIG_COMPAT
 161 static inline void __user *arch_compat_alloc_user_space(long len)
 162 {
 163         struct pt_regs *regs = current_thread_info()->kregs;
 164         unsigned long usp = regs->u_regs[UREG_I6];
 165
 166         if (test_thread_64bit_stack(usp))
 167                 usp += STACK_BIAS;
 168
 169         if (test_thread_flag(TIF_32BIT))
 170                 usp &= 0xffffffffUL;
 171
 172         usp -= len;
 173         usp &= ~0x7UL;
 174
 175         return (void __user *) usp;
 176 }
 177 #endif
 178
 179 struct compat_ipc64_perm {
 180         compat_key_t key;
 181         __compat_uid32_t uid;
 182         __compat_gid32_t gid;
 183         __compat_uid32_t cuid;
 184         __compat_gid32_t cgid;
 185         unsigned short __pad1;
 186         compat_mode_t mode;
 187         unsigned short __pad2;
 188         unsigned short seq;
 189         unsigned long __unused1;        /* yes they really are 64bit pads */
 190         unsigned long __unused2;
 191 };
 192
 193 struct compat_semid64_ds {
 194         struct compat_ipc64_perm sem_perm;
 195         unsigned int    sem_otime_high;
 196         unsigned int    sem_otime;
 197         unsigned int    sem_ctime_high;
 198         unsigned int    sem_ctime;
 199         u32             sem_nsems;
 200         u32             __unused1;
 201         u32             __unused2;
 202 };
 203
 204 struct compat_msqid64_ds {
 205         struct compat_ipc64_perm msg_perm;
 206         unsigned int    msg_stime_high;
 207         unsigned int    msg_stime;
 208         unsigned int    msg_rtime_high;
 209         unsigned int    msg_rtime;
 210         unsigned int    msg_ctime_high;
 211         unsigned int    msg_ctime;
 212         unsigned int    msg_cbytes;
 213         unsigned int    msg_qnum;
 214         unsigned int    msg_qbytes;
 215         compat_pid_t    msg_lspid;
 216         compat_pid_t    msg_lrpid;
 217         unsigned int    __unused1;
 218         unsigned int    __unused2;
 219 };
 220
 221 struct compat_shmid64_ds {
 222         struct compat_ipc64_perm shm_perm;
 223         unsigned int    shm_atime_high;
 224         unsigned int    shm_atime;
 225         unsigned int    shm_dtime_high;
 226         unsigned int    shm_dtime;
 227         unsigned int    shm_ctime_high;
 228         unsigned int    shm_ctime;
 229         compat_size_t   shm_segsz;
 230         compat_pid_t    shm_cpid;
 231         compat_pid_t    shm_lpid;
 232         unsigned int    shm_nattch;
 233         unsigned int    __unused1;
 234         unsigned int    __unused2;
 235 };
 236
 237 #ifdef CONFIG_COMPAT
 238 static inline int is_compat_task(void)
 239 {
 240         return test_thread_flag(TIF_32BIT);
 241 }
 242
 243 static inline bool in_compat_syscall(void)
 244 {
 245         /* Vector 0x110 is LINUX_32BIT_SYSCALL_TRAP */
 246         return pt_regs_trap_type(current_pt_regs()) == 0x110;
 247 }
 248 #define in_compat_syscall in_compat_syscall
 249 #endif
 250
 251 #endif /* _ASM_SPARC64_COMPAT_H */