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 13typedef u32 compat_size_t; 14typedef s32 compat_ssize_t; 15typedef s32 compat_time_t; 16typedef s32 compat_clock_t; 17typedef s32 compat_pid_t; 18typedef u16 __compat_uid_t; 19typedef u16 __compat_gid_t; 20typedef u32 __compat_uid32_t; 21typedef u32 __compat_gid32_t; 22typedef u16 compat_mode_t; 23typedef u32 compat_ino_t; 24typedef u16 compat_dev_t; 25typedef s32 compat_off_t; 26typedef s64 compat_loff_t; 27typedef u16 compat_nlink_t; 28typedef u16 compat_ipc_pid_t; 29typedef s32 compat_daddr_t; 30typedef u32 compat_caddr_t; 31typedef __kernel_fsid_t compat_fsid_t; 32typedef s32 compat_timer_t; 33typedef s32 compat_key_t; 34 35typedef s32 compat_int_t; 36typedef s32 compat_long_t; 37typedef s64 __attribute__((aligned(4))) compat_s64; 38typedef u32 compat_uint_t; 39typedef u32 compat_ulong_t; 40typedef u64 __attribute__((aligned(4))) compat_u64; 41 42struct compat_timespec { 43 compat_time_t tv_sec; 44 s32 tv_nsec; 45}; 46 47struct compat_timeval { 48 compat_time_t tv_sec; 49 s32 tv_usec; 50}; 51 52struct compat_stat { 53 compat_dev_t st_dev; 54 u16 __pad1; 55 compat_ino_t st_ino; 56 compat_mode_t st_mode; 57 compat_nlink_t st_nlink; 58 __compat_uid_t st_uid; 59 __compat_gid_t st_gid; 60 compat_dev_t st_rdev; 61 u16 __pad2; 62 u32 st_size; 63 u32 st_blksize; 64 u32 st_blocks; 65 u32 st_atime; 66 u32 st_atime_nsec; 67 u32 st_mtime; 68 u32 st_mtime_nsec; 69 u32 st_ctime; 70 u32 st_ctime_nsec; 71 u32 __unused4; 72 u32 __unused5; 73}; 74 75struct compat_flock { 76 short l_type; 77 short l_whence; 78 compat_off_t l_start; 79 compat_off_t l_len; 80 compat_pid_t l_pid; 81}; 82 83#define F_GETLK64 12 /* using 'struct flock64' */ 84#define F_SETLK64 13 85#define F_SETLKW64 14 86 87/* 88 * IA32 uses 4 byte alignment for 64 bit quantities, 89 * so we need to pack this structure. 90 */ 91struct 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} __attribute__((packed)); 98 99struct compat_statfs { 100 int f_type; 101 int f_bsize; 102 int f_blocks; 103 int f_bfree; 104 int f_bavail; 105 int f_files; 106 int f_ffree; 107 compat_fsid_t f_fsid; 108 int f_namelen; /* SunOS ignores this field. */ 109 int f_frsize; 110 int f_spare[5]; 111}; 112 113#define COMPAT_RLIM_OLD_INFINITY 0x7fffffff 114#define COMPAT_RLIM_INFINITY 0xffffffff 115 116typedef u32 compat_old_sigset_t; /* at least 32 bits */ 117 118#define _COMPAT_NSIG 64 119#define _COMPAT_NSIG_BPW 32 120 121typedef u32 compat_sigset_word; 122 123#define COMPAT_OFF_T_MAX 0x7fffffff 124#define COMPAT_LOFF_T_MAX 0x7fffffffffffffffL 125 126struct compat_ipc64_perm { 127 compat_key_t key; 128 __compat_uid32_t uid; 129 __compat_gid32_t gid; 130 __compat_uid32_t cuid; 131 __compat_gid32_t cgid; 132 unsigned short mode; 133 unsigned short __pad1; 134 unsigned short seq; 135 unsigned short __pad2; 136 compat_ulong_t unused1; 137 compat_ulong_t unused2; 138}; 139 140struct compat_semid64_ds { 141 struct compat_ipc64_perm sem_perm; 142 compat_time_t sem_otime; 143 compat_ulong_t __unused1; 144 compat_time_t sem_ctime; 145 compat_ulong_t __unused2; 146 compat_ulong_t sem_nsems; 147 compat_ulong_t __unused3; 148 compat_ulong_t __unused4; 149}; 150 151struct compat_msqid64_ds { 152 struct compat_ipc64_perm msg_perm; 153 compat_time_t msg_stime; 154 compat_ulong_t __unused1; 155 compat_time_t msg_rtime; 156 compat_ulong_t __unused2; 157 compat_time_t msg_ctime; 158 compat_ulong_t __unused3; 159 compat_ulong_t msg_cbytes; 160 compat_ulong_t msg_qnum; 161 compat_ulong_t msg_qbytes; 162 compat_pid_t msg_lspid; 163 compat_pid_t msg_lrpid; 164 compat_ulong_t __unused4; 165 compat_ulong_t __unused5; 166}; 167 168struct compat_shmid64_ds { 169 struct compat_ipc64_perm shm_perm; 170 compat_size_t shm_segsz; 171 compat_time_t shm_atime; 172 compat_ulong_t __unused1; 173 compat_time_t shm_dtime; 174 compat_ulong_t __unused2; 175 compat_time_t shm_ctime; 176 compat_ulong_t __unused3; 177 compat_pid_t shm_cpid; 178 compat_pid_t shm_lpid; 179 compat_ulong_t shm_nattch; 180 compat_ulong_t __unused4; 181 compat_ulong_t __unused5; 182}; 183 184/* 185 * The type of struct elf_prstatus.pr_reg in compatible core dumps. 186 */ 187typedef struct user_regs_struct32 compat_elf_gregset_t; 188 189/* 190 * A pointer passed in from user mode. This should not 191 * be used for syscall parameters, just declare them 192 * as pointers because the syscall entry code will have 193 * appropriately converted them already. 194 */ 195typedef u32 compat_uptr_t; 196 197static inline void __user *compat_ptr(compat_uptr_t uptr) 198{ 199 return (void __user *)(unsigned long)uptr; 200} 201 202static inline compat_uptr_t ptr_to_compat(void __user *uptr) 203{ 204 return (u32)(unsigned long)uptr; 205} 206 207static inline void __user *compat_alloc_user_space(long len) 208{ 209 struct pt_regs *regs = task_pt_regs(current); 210 return (void __user *)regs->sp - len; 211} 212 213static inline int is_compat_task(void) 214{ 215 return current_thread_info()->status & TS_COMPAT; 216} 217 218#endif /* _ASM_X86_COMPAT_H */ 219