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