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 #include <asm-generic/compat.h>
  10
  11 #define COMPAT_USER_HZ          100
  12 #define COMPAT_UTS_MACHINE      "sparc\0\0"
  13
  14 typedef u16             __compat_uid_t;
  15 typedef u16             __compat_gid_t;
  16 typedef u32             __compat_uid32_t;
  17 typedef u32             __compat_gid32_t;
  18 typedef u16             compat_mode_t;
  19 typedef u16             compat_dev_t;
  20 typedef s16             compat_nlink_t;
  21 typedef u16             compat_ipc_pid_t;
  22 typedef u32             compat_caddr_t;
  23 typedef __kernel_fsid_t compat_fsid_t;
  24
  25 struct compat_stat {
  26         compat_dev_t    st_dev;
  27         compat_ino_t    st_ino;
  28         compat_mode_t   st_mode;
  29         compat_nlink_t  st_nlink;
  30         __compat_uid_t  st_uid;
  31         __compat_gid_t  st_gid;
  32         compat_dev_t    st_rdev;
  33         compat_off_t    st_size;
  34         old_time32_t    st_atime;
  35         compat_ulong_t  st_atime_nsec;
  36         old_time32_t    st_mtime;
  37         compat_ulong_t  st_mtime_nsec;
  38         old_time32_t    st_ctime;
  39         compat_ulong_t  st_ctime_nsec;
  40         compat_off_t    st_blksize;
  41         compat_off_t    st_blocks;
  42         u32             __unused4[2];
  43 };
  44
  45 struct compat_stat64 {
  46         unsigned long long      st_dev;
  47
  48         unsigned long long      st_ino;
  49
  50         unsigned int    st_mode;
  51         unsigned int    st_nlink;
  52
  53         unsigned int    st_uid;
  54         unsigned int    st_gid;
  55
  56         unsigned long long      st_rdev;
  57
  58         unsigned char   __pad3[8];
  59
  60         long long       st_size;
  61         unsigned int    st_blksize;
  62
  63         unsigned char   __pad4[8];
  64         unsigned int    st_blocks;
  65
  66         unsigned int    st_atime;
  67         unsigned int    st_atime_nsec;
  68
  69         unsigned int    st_mtime;
  70         unsigned int    st_mtime_nsec;
  71
  72         unsigned int    st_ctime;
  73         unsigned int    st_ctime_nsec;
  74
  75         unsigned int    __unused4;
  76         unsigned int    __unused5;
  77 };
  78
  79 struct compat_flock {
  80         short           l_type;
  81         short           l_whence;
  82         compat_off_t    l_start;
  83         compat_off_t    l_len;
  84         compat_pid_t    l_pid;
  85         short           __unused;
  86 };
  87
  88 #define F_GETLK64       12
  89 #define F_SETLK64       13
  90 #define F_SETLKW64      14
  91
  92 struct compat_flock64 {
  93         short           l_type;
  94         short           l_whence;
  95         compat_loff_t   l_start;
  96         compat_loff_t   l_len;
  97         compat_pid_t    l_pid;
  98         short           __unused;
  99 };
 100
 101 struct compat_statfs {
 102         int             f_type;
 103         int             f_bsize;
 104         int             f_blocks;
 105         int             f_bfree;
 106         int             f_bavail;
 107         int             f_files;
 108         int             f_ffree;
 109         compat_fsid_t   f_fsid;
 110         int             f_namelen;      /* SunOS ignores this field. */
 111         int             f_frsize;
 112         int             f_flags;
 113         int             f_spare[4];
 114 };
 115
 116 #define COMPAT_RLIM_INFINITY 0x7fffffff
 117
 118 typedef u32             compat_old_sigset_t;
 119
 120 #define _COMPAT_NSIG            64
 121 #define _COMPAT_NSIG_BPW        32
 122
 123 typedef u32             compat_sigset_word;
 124
 125 #define COMPAT_OFF_T_MAX        0x7fffffff
 126
 127 #ifdef CONFIG_COMPAT
 128 static inline void __user *arch_compat_alloc_user_space(long len)
 129 {
 130         struct pt_regs *regs = current_thread_info()->kregs;
 131         unsigned long usp = regs->u_regs[UREG_I6];
 132
 133         if (test_thread_64bit_stack(usp))
 134                 usp += STACK_BIAS;
 135
 136         if (test_thread_flag(TIF_32BIT))
 137                 usp &= 0xffffffffUL;
 138
 139         usp -= len;
 140         usp &= ~0x7UL;
 141
 142         return (void __user *) usp;
 143 }
 144 #endif
 145
 146 struct compat_ipc64_perm {
 147         compat_key_t key;
 148         __compat_uid32_t uid;
 149         __compat_gid32_t gid;
 150         __compat_uid32_t cuid;
 151         __compat_gid32_t cgid;
 152         unsigned short __pad1;
 153         compat_mode_t mode;
 154         unsigned short __pad2;
 155         unsigned short seq;
 156         unsigned long __unused1;        /* yes they really are 64bit pads */
 157         unsigned long __unused2;
 158 };
 159
 160 struct compat_semid64_ds {
 161         struct compat_ipc64_perm sem_perm;
 162         unsigned int    sem_otime_high;
 163         unsigned int    sem_otime;
 164         unsigned int    sem_ctime_high;
 165         unsigned int    sem_ctime;
 166         u32             sem_nsems;
 167         u32             __unused1;
 168         u32             __unused2;
 169 };
 170
 171 struct compat_msqid64_ds {
 172         struct compat_ipc64_perm msg_perm;
 173         unsigned int    msg_stime_high;
 174         unsigned int    msg_stime;
 175         unsigned int    msg_rtime_high;
 176         unsigned int    msg_rtime;
 177         unsigned int    msg_ctime_high;
 178         unsigned int    msg_ctime;
 179         unsigned int    msg_cbytes;
 180         unsigned int    msg_qnum;
 181         unsigned int    msg_qbytes;
 182         compat_pid_t    msg_lspid;
 183         compat_pid_t    msg_lrpid;
 184         unsigned int    __unused1;
 185         unsigned int    __unused2;
 186 };
 187
 188 struct compat_shmid64_ds {
 189         struct compat_ipc64_perm shm_perm;
 190         unsigned int    shm_atime_high;
 191         unsigned int    shm_atime;
 192         unsigned int    shm_dtime_high;
 193         unsigned int    shm_dtime;
 194         unsigned int    shm_ctime_high;
 195         unsigned int    shm_ctime;
 196         compat_size_t   shm_segsz;
 197         compat_pid_t    shm_cpid;
 198         compat_pid_t    shm_lpid;
 199         unsigned int    shm_nattch;
 200         unsigned int    __unused1;
 201         unsigned int    __unused2;
 202 };
 203
 204 #ifdef CONFIG_COMPAT
 205 static inline int is_compat_task(void)
 206 {
 207         return test_thread_flag(TIF_32BIT);
 208 }
 209
 210 static inline bool in_compat_syscall(void)
 211 {
 212         /* Vector 0x110 is LINUX_32BIT_SYSCALL_TRAP */
 213         return pt_regs_trap_type(current_pt_regs()) == 0x110;
 214 }
 215 #define in_compat_syscall in_compat_syscall
 216 #endif
 217
 218 #endif /* _ASM_SPARC64_COMPAT_H */