arch/parisc/include/asm/compat.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ASM_PARISC_COMPAT_H
   3 #define _ASM_PARISC_COMPAT_H
   4 /*
   5  * Architecture specific compatibility types
   6  */
   7 #include <linux/types.h>
   8 #include <linux/sched.h>
   9 #include <linux/thread_info.h>
  10
  11 #define COMPAT_USER_HZ          100
  12 #define COMPAT_UTS_MACHINE      "parisc\0\0"
  13
  14 typedef u32     compat_size_t;
  15 typedef s32     compat_ssize_t;
  16 typedef s32     compat_clock_t;
  17 typedef s32     compat_pid_t;
  18 typedef u32     __compat_uid_t;
  19 typedef u32     __compat_gid_t;
  20 typedef u32     __compat_uid32_t;
  21 typedef u32     __compat_gid32_t;
  22 typedef u16     compat_mode_t;
  23 typedef u32     compat_ino_t;
  24 typedef u32     compat_dev_t;
  25 typedef s32     compat_off_t;
  26 typedef s64     compat_loff_t;
  27 typedef u16     compat_nlink_t;
  28 typedef u16     compat_ipc_pid_t;
  29 typedef s32     compat_daddr_t;
  30 typedef u32     compat_caddr_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_stat {
  43         compat_dev_t            st_dev; /* dev_t is 32 bits on parisc */
  44         compat_ino_t            st_ino; /* 32 bits */
  45         compat_mode_t           st_mode;        /* 16 bits */
  46         compat_nlink_t          st_nlink;       /* 16 bits */
  47         u16                     st_reserved1;   /* old st_uid */
  48         u16                     st_reserved2;   /* old st_gid */
  49         compat_dev_t            st_rdev;
  50         compat_off_t            st_size;
  51         compat_time_t           st_atime;
  52         u32                     st_atime_nsec;
  53         compat_time_t           st_mtime;
  54         u32                     st_mtime_nsec;
  55         compat_time_t           st_ctime;
  56         u32                     st_ctime_nsec;
  57         s32                     st_blksize;
  58         s32                     st_blocks;
  59         u32                     __unused1;      /* ACL stuff */
  60         compat_dev_t            __unused2;      /* network */
  61         compat_ino_t            __unused3;      /* network */
  62         u32                     __unused4;      /* cnodes */
  63         u16                     __unused5;      /* netsite */
  64         short                   st_fstype;
  65         compat_dev_t            st_realdev;
  66         u16                     st_basemode;
  67         u16                     st_spareshort;
  68         __compat_uid32_t        st_uid;
  69         __compat_gid32_t        st_gid;
  70         u32                     st_spare4[3];
  71 };
  72
  73 struct compat_flock {
  74         short                   l_type;
  75         short                   l_whence;
  76         compat_off_t            l_start;
  77         compat_off_t            l_len;
  78         compat_pid_t            l_pid;
  79 };
  80
  81 struct compat_flock64 {
  82         short                   l_type;
  83         short                   l_whence;
  84         compat_loff_t           l_start;
  85         compat_loff_t           l_len;
  86         compat_pid_t            l_pid;
  87 };
  88
  89 struct compat_statfs {
  90         s32             f_type;
  91         s32             f_bsize;
  92         s32             f_blocks;
  93         s32             f_bfree;
  94         s32             f_bavail;
  95         s32             f_files;
  96         s32             f_ffree;
  97         __kernel_fsid_t f_fsid;
  98         s32             f_namelen;
  99         s32             f_frsize;
 100         s32             f_flags;
 101         s32             f_spare[4];
 102 };
 103
 104 struct compat_sigcontext {
 105         compat_int_t sc_flags;
 106         compat_int_t sc_gr[32]; /* PSW in sc_gr[0] */
 107         u64 sc_fr[32];
 108         compat_int_t sc_iasq[2];
 109         compat_int_t sc_iaoq[2];
 110         compat_int_t sc_sar; /* cr11 */
 111 };
 112
 113 #define COMPAT_RLIM_INFINITY 0xffffffff
 114
 115 typedef u32             compat_old_sigset_t;    /* at least 32 bits */
 116
 117 #define _COMPAT_NSIG            64
 118 #define _COMPAT_NSIG_BPW        32
 119
 120 typedef u32             compat_sigset_word;
 121
 122 #define COMPAT_OFF_T_MAX        0x7fffffff
 123
 124 struct compat_ipc64_perm {
 125         compat_key_t key;
 126         __compat_uid_t uid;
 127         __compat_gid_t gid;
 128         __compat_uid_t cuid;
 129         __compat_gid_t cgid;
 130         unsigned short int __pad1;
 131         compat_mode_t mode;
 132         unsigned short int __pad2;
 133         unsigned short int seq;
 134         unsigned int __pad3;
 135         unsigned long __unused1;        /* yes they really are 64bit pads */
 136         unsigned long __unused2;
 137 };
 138
 139 struct compat_semid64_ds {
 140         struct compat_ipc64_perm sem_perm;
 141         unsigned int sem_otime_high;
 142         unsigned int sem_otime;
 143         unsigned int sem_ctime_high;
 144         unsigned int sem_ctime;
 145         compat_ulong_t sem_nsems;
 146         compat_ulong_t __unused3;
 147         compat_ulong_t __unused4;
 148 };
 149
 150 struct compat_msqid64_ds {
 151         struct compat_ipc64_perm msg_perm;
 152         unsigned int msg_stime_high;
 153         unsigned int msg_stime;
 154         unsigned int msg_rtime_high;
 155         unsigned int msg_rtime;
 156         unsigned int msg_ctime_high;
 157         unsigned int msg_ctime;
 158         compat_ulong_t msg_cbytes;
 159         compat_ulong_t msg_qnum;
 160         compat_ulong_t msg_qbytes;
 161         compat_pid_t msg_lspid;
 162         compat_pid_t msg_lrpid;
 163         compat_ulong_t __unused4;
 164         compat_ulong_t __unused5;
 165 };
 166
 167 struct compat_shmid64_ds {
 168         struct compat_ipc64_perm shm_perm;
 169         unsigned int shm_atime_high;
 170         unsigned int shm_atime;
 171         unsigned int shm_dtime_high;
 172         unsigned int shm_dtime;
 173         unsigned int shm_ctime_high;
 174         unsigned int shm_ctime;
 175         unsigned int __unused4;
 176         compat_size_t shm_segsz;
 177         compat_pid_t shm_cpid;
 178         compat_pid_t shm_lpid;
 179         compat_ulong_t shm_nattch;
 180         compat_ulong_t __unused5;
 181         compat_ulong_t __unused6;
 182 };
 183
 184 /*
 185  * The type of struct elf_prstatus.pr_reg in compatible core dumps.
 186  */
 187 #define COMPAT_ELF_NGREG 80
 188 typedef compat_ulong_t compat_elf_gregset_t[COMPAT_ELF_NGREG];
 189
 190 /*
 191  * A pointer passed in from user mode. This should not
 192  * be used for syscall parameters, just declare them
 193  * as pointers because the syscall entry code will have
 194  * appropriately converted them already.
 195  */
 196
 197 static inline void __user *compat_ptr(compat_uptr_t uptr)
 198 {
 199         return (void __user *)(unsigned long)uptr;
 200 }
 201
 202 static inline compat_uptr_t ptr_to_compat(void __user *uptr)
 203 {
 204         return (u32)(unsigned long)uptr;
 205 }
 206
 207 static __inline__ void __user *arch_compat_alloc_user_space(long len)
 208 {
 209         struct pt_regs *regs = &current->thread.regs;
 210         return (void __user *)regs->gr[30];
 211 }
 212
 213 static inline int __is_compat_task(struct task_struct *t)
 214 {
 215         return test_ti_thread_flag(task_thread_info(t), TIF_32BIT);
 216 }
 217
 218 static inline int is_compat_task(void)
 219 {
 220         return __is_compat_task(current);
 221 }
 222
 223 #endif /* _ASM_PARISC_COMPAT_H */