1#ifndef _ASM_X86_COMPAT_H 2#define _ASM_X86_COMPAT_H 3 4/* 5 * Architecture specific compatibility types 6 */ 7#include <linux/types.h> 8#include <linux/sched.h> 9#include <asm/user32.h> 10 11#define COMPAT_USER_HZ 100 12#define COMPAT_UTS_MACHINE "i686\0\0" 13 14typedef u32 compat_size_t; 15typedef s32 compat_ssize_t; 16typedef s32 compat_time_t; 17typedef s32 compat_clock_t; 18typedef s32 compat_pid_t; 19typedef u16 __compat_uid_t; 20typedef u16 __compat_gid_t; 21typedef u32 __compat_uid32_t; 22typedef u32 __compat_gid32_t; 23typedef u16 compat_mode_t; 24typedef u32 compat_ino_t; 25typedef u16 compat_dev_t; 26typedef s32 compat_off_t; 27typedef s64 compat_loff_t; 28typedef u16 compat_nlink_t; 29typedef u16 compat_ipc_pid_t; 30typedef s32 compat_daddr_t; 31typedef u32 compat_caddr_t; 32typedef __kernel_fsid_t compat_fsid_t; 33typedef s32 compat_timer_t; 34typedef s32 compat_key_t; 35 36typedef s32 compat_int_t; 37typedef s32 compat_long_t; 38typedef s64 __attribute__((aligned(4))) compat_s64; 39typedef u32 compat_uint_t; 40typedef u32 compat_ulong_t; 41typedef u64 __attribute__((aligned(4))) compat_u64; 42 43struct compat_timespec { 44 compat_time_t tv_sec; 45 s32 tv_nsec; 46}; 47 48struct compat_timeval { 49 compat_time_t tv_sec; 50 s32 tv_usec; 51}; 52 53struct compat_stat { 54 compat_dev_t st_dev; 55 u16 __pad1; 56 compat_ino_t st_ino; 57 compat_mode_t st_mode; 58 compat_nlink_t st_nlink; 59 __compat_uid_t st_uid; 60 __compat_gid_t st_gid; 61 compat_dev_t st_rdev; 62 u16 __pad2; 63 u32 st_size; 64 u32 st_blksize; 65 u32 st_blocks; 66 u32 st_atime; 67 u32 st_atime_nsec; 68 u32 st_mtime; 69 u32 st_mtime_nsec; 70 u32 st_ctime; 71 u32 st_ctime_nsec; 72 u32 __unused4; 73 u32 __unused5; 74}; 75 76struct compat_flock { 77 short l_type; 78 short l_whence; 79 compat_off_t l_start; 80 compat_off_t l_len; 81 compat_pid_t l_pid; 82}; 83 84#define F_GETLK64 12 /* using 'struct flock64' */ 85#define F_SETLK64 13 86#define F_SETLKW64 14 87 88/* 89 * IA32 uses 4 byte alignment for 64 bit quantities, 90 * so we need to pack this structure. 91 */ 92struct 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} __attribute__((packed)); 99 100struct 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_OLD_INFINITY 0x7fffffff 116#define COMPAT_RLIM_INFINITY 0xffffffff 117 118typedef u32 compat_old_sigset_t; /* at least 32 bits */ 119 120#define _COMPAT_NSIG 64 121#define _COMPAT_NSIG_BPW 32 122 123typedef u32 compat_sigset_word; 124 125#define COMPAT_OFF_T_MAX 0x7fffffff 126#define COMPAT_LOFF_T_MAX 0x7fffffffffffffffL 127 128struct compat_ipc64_perm { 129 compat_key_t key; 130 __compat_uid32_t uid; 131 __compat_gid32_t gid; 132 __compat_uid32_t cuid; 133 __compat_gid32_t cgid; 134 unsigned short mode; 135 unsigned short __pad1; 136 unsigned short seq; 137 unsigned short __pad2; 138 compat_ulong_t unused1; 139 compat_ulong_t unused2; 140}; 141 142struct compat_semid64_ds { 143 struct compat_ipc64_perm sem_perm; 144 compat_time_t sem_otime; 145 compat_ulong_t __unused1; 146 compat_time_t sem_ctime; 147 compat_ulong_t __unused2; 148 compat_ulong_t sem_nsems; 149 compat_ulong_t __unused3; 150 compat_ulong_t __unused4; 151}; 152 153struct compat_msqid64_ds { 154 struct compat_ipc64_perm msg_perm; 155 compat_time_t msg_stime; 156 compat_ulong_t __unused1; 157 compat_time_t msg_rtime; 158 compat_ulong_t __unused2; 159 compat_time_t msg_ctime; 160 compat_ulong_t __unused3; 161 compat_ulong_t msg_cbytes; 162 compat_ulong_t msg_qnum; 163 compat_ulong_t msg_qbytes; 164 compat_pid_t msg_lspid; 165 compat_pid_t msg_lrpid; 166 compat_ulong_t __unused4; 167 compat_ulong_t __unused5; 168}; 169 170struct compat_shmid64_ds { 171 struct compat_ipc64_perm shm_perm; 172 compat_size_t shm_segsz; 173 compat_time_t shm_atime; 174 compat_ulong_t __unused1; 175 compat_time_t shm_dtime; 176 compat_ulong_t __unused2; 177 compat_time_t shm_ctime; 178 compat_ulong_t __unused3; 179 compat_pid_t shm_cpid; 180 compat_pid_t shm_lpid; 181 compat_ulong_t shm_nattch; 182 compat_ulong_t __unused4; 183 compat_ulong_t __unused5; 184}; 185 186/* 187 * The type of struct elf_prstatus.pr_reg in compatible core dumps. 188 */ 189typedef struct user_regs_struct32 compat_elf_gregset_t; 190 191/* 192 * A pointer passed in from user mode. This should not 193 * be used for syscall parameters, just declare them 194 * as pointers because the syscall entry code will have 195 * appropriately converted them already. 196 */ 197typedef u32 compat_uptr_t; 198 199static inline void __user *compat_ptr(compat_uptr_t uptr) 200{ 201 return (void __user *)(unsigned long)uptr; 202} 203 204static inline compat_uptr_t ptr_to_compat(void __user *uptr) 205{ 206 return (u32)(unsigned long)uptr; 207} 208 209static inline void __user *arch_compat_alloc_user_space(long len) 210{ 211 struct pt_regs *regs = task_pt_regs(current); 212 return (void __user *)regs->sp - len; 213} 214 215static inline int is_compat_task(void) 216{ 217 return current_thread_info()->status & TS_COMPAT; 218} 219 220#endif /* _ASM_X86_COMPAT_H */ 221