root/arch/parisc/include/asm/compat.h

INCLUDED FROM

DEFINITIONS

1. compat_ptr
2. ptr_to_compat
3. arch_compat_alloc_user_space
4. __is_compat_task
5. is_compat_task

   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 #include <asm-generic/compat.h>
  12 
  13 #define COMPAT_USER_HZ          100
  14 #define COMPAT_UTS_MACHINE      "parisc\0\0"
  15 
  16 typedef u32     __compat_uid_t;
  17 typedef u32     __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_dev_t;
  22 typedef u16     compat_nlink_t;
  23 typedef u16     compat_ipc_pid_t;
  24 typedef u32     compat_caddr_t;
  25 typedef s64     compat_s64;
  26 typedef u64     compat_u64;
  27 
  28 struct compat_stat {
  29         compat_dev_t            st_dev; /* dev_t is 32 bits on parisc */
  30         compat_ino_t            st_ino; /* 32 bits */
  31         compat_mode_t           st_mode;        /* 16 bits */
  32         compat_nlink_t          st_nlink;       /* 16 bits */
  33         u16                     st_reserved1;   /* old st_uid */
  34         u16                     st_reserved2;   /* old st_gid */
  35         compat_dev_t            st_rdev;
  36         compat_off_t            st_size;
  37         old_time32_t            st_atime;
  38         u32                     st_atime_nsec;
  39         old_time32_t            st_mtime;
  40         u32                     st_mtime_nsec;
  41         old_time32_t            st_ctime;
  42         u32                     st_ctime_nsec;
  43         s32                     st_blksize;
  44         s32                     st_blocks;
  45         u32                     __unused1;      /* ACL stuff */
  46         compat_dev_t            __unused2;      /* network */
  47         compat_ino_t            __unused3;      /* network */
  48         u32                     __unused4;      /* cnodes */
  49         u16                     __unused5;      /* netsite */
  50         short                   st_fstype;
  51         compat_dev_t            st_realdev;
  52         u16                     st_basemode;
  53         u16                     st_spareshort;
  54         __compat_uid32_t        st_uid;
  55         __compat_gid32_t        st_gid;
  56         u32                     st_spare4[3];
  57 };
  58 
  59 struct compat_flock {
  60         short                   l_type;
  61         short                   l_whence;
  62         compat_off_t            l_start;
  63         compat_off_t            l_len;
  64         compat_pid_t            l_pid;
  65 };
  66 
  67 struct compat_flock64 {
  68         short                   l_type;
  69         short                   l_whence;
  70         compat_loff_t           l_start;
  71         compat_loff_t           l_len;
  72         compat_pid_t            l_pid;
  73 };
  74 
  75 struct compat_statfs {
  76         s32             f_type;
  77         s32             f_bsize;
  78         s32             f_blocks;
  79         s32             f_bfree;
  80         s32             f_bavail;
  81         s32             f_files;
  82         s32             f_ffree;
  83         __kernel_fsid_t f_fsid;
  84         s32             f_namelen;
  85         s32             f_frsize;
  86         s32             f_flags;
  87         s32             f_spare[4];
  88 };
  89 
  90 struct compat_sigcontext {
  91         compat_int_t sc_flags;
  92         compat_int_t sc_gr[32]; /* PSW in sc_gr[0] */
  93         u64 sc_fr[32];
  94         compat_int_t sc_iasq[2];
  95         compat_int_t sc_iaoq[2];
  96         compat_int_t sc_sar; /* cr11 */
  97 };
  98 
  99 #define COMPAT_RLIM_INFINITY 0xffffffff
 100 
 101 typedef u32             compat_old_sigset_t;    /* at least 32 bits */
 102 
 103 #define _COMPAT_NSIG            64
 104 #define _COMPAT_NSIG_BPW        32
 105 
 106 typedef u32             compat_sigset_word;
 107 
 108 #define COMPAT_OFF_T_MAX        0x7fffffff
 109 
 110 struct compat_ipc64_perm {
 111         compat_key_t key;
 112         __compat_uid_t uid;
 113         __compat_gid_t gid;
 114         __compat_uid_t cuid;
 115         __compat_gid_t cgid;
 116         unsigned short int __pad1;
 117         compat_mode_t mode;
 118         unsigned short int __pad2;
 119         unsigned short int seq;
 120         unsigned int __pad3;
 121         unsigned long __unused1;        /* yes they really are 64bit pads */
 122         unsigned long __unused2;
 123 };
 124 
 125 struct compat_semid64_ds {
 126         struct compat_ipc64_perm sem_perm;
 127         unsigned int sem_otime_high;
 128         unsigned int sem_otime;
 129         unsigned int sem_ctime_high;
 130         unsigned int sem_ctime;
 131         compat_ulong_t sem_nsems;
 132         compat_ulong_t __unused3;
 133         compat_ulong_t __unused4;
 134 };
 135 
 136 struct compat_msqid64_ds {
 137         struct compat_ipc64_perm msg_perm;
 138         unsigned int msg_stime_high;
 139         unsigned int msg_stime;
 140         unsigned int msg_rtime_high;
 141         unsigned int msg_rtime;
 142         unsigned int msg_ctime_high;
 143         unsigned int msg_ctime;
 144         compat_ulong_t msg_cbytes;
 145         compat_ulong_t msg_qnum;
 146         compat_ulong_t msg_qbytes;
 147         compat_pid_t msg_lspid;
 148         compat_pid_t msg_lrpid;
 149         compat_ulong_t __unused4;
 150         compat_ulong_t __unused5;
 151 };
 152 
 153 struct compat_shmid64_ds {
 154         struct compat_ipc64_perm shm_perm;
 155         unsigned int shm_atime_high;
 156         unsigned int shm_atime;
 157         unsigned int shm_dtime_high;
 158         unsigned int shm_dtime;
 159         unsigned int shm_ctime_high;
 160         unsigned int shm_ctime;
 161         unsigned int __unused4;
 162         compat_size_t shm_segsz;
 163         compat_pid_t shm_cpid;
 164         compat_pid_t shm_lpid;
 165         compat_ulong_t shm_nattch;
 166         compat_ulong_t __unused5;
 167         compat_ulong_t __unused6;
 168 };
 169 
 170 /*
 171  * The type of struct elf_prstatus.pr_reg in compatible core dumps.
 172  */
 173 #define COMPAT_ELF_NGREG 80
 174 typedef compat_ulong_t compat_elf_gregset_t[COMPAT_ELF_NGREG];
 175 
 176 /*
 177  * A pointer passed in from user mode. This should not
 178  * be used for syscall parameters, just declare them
 179  * as pointers because the syscall entry code will have
 180  * appropriately converted them already.
 181  */
 182 
 183 static inline void __user *compat_ptr(compat_uptr_t uptr)
 184 {
 185         return (void __user *)(unsigned long)uptr;
 186 }
 187 
 188 static inline compat_uptr_t ptr_to_compat(void __user *uptr)
 189 {
 190         return (u32)(unsigned long)uptr;
 191 }
 192 
 193 static __inline__ void __user *arch_compat_alloc_user_space(long len)
 194 {
 195         struct pt_regs *regs = &current->thread.regs;
 196         return (void __user *)regs->gr[30];
 197 }
 198 
 199 static inline int __is_compat_task(struct task_struct *t)
 200 {
 201         return test_ti_thread_flag(task_thread_info(t), TIF_32BIT);
 202 }
 203 
 204 static inline int is_compat_task(void)
 205 {
 206         return __is_compat_task(current);
 207 }
 208 
 209 #endif /* _ASM_PARISC_COMPAT_H */