1#ifndef _ASM_COMPAT_H 2#define _ASM_COMPAT_H 3/* 4 * Architecture specific compatibility types 5 */ 6#include <linux/thread_info.h> 7#include <linux/types.h> 8#include <asm/page.h> 9#include <asm/ptrace.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_suseconds_t; 18 19typedef s32 compat_pid_t; 20typedef s32 __compat_uid_t; 21typedef s32 __compat_gid_t; 22typedef __compat_uid_t __compat_uid32_t; 23typedef __compat_gid_t __compat_gid32_t; 24typedef u32 compat_mode_t; 25typedef u32 compat_ino_t; 26typedef u32 compat_dev_t; 27typedef s32 compat_off_t; 28typedef s64 compat_loff_t; 29typedef u32 compat_nlink_t; 30typedef s32 compat_ipc_pid_t; 31typedef s32 compat_daddr_t; 32typedef s32 compat_caddr_t; 33typedef struct { 34 s32 val[2]; 35} compat_fsid_t; 36typedef s32 compat_timer_t; 37typedef s32 compat_key_t; 38 39typedef s32 compat_int_t; 40typedef s32 compat_long_t; 41typedef s64 compat_s64; 42typedef u32 compat_uint_t; 43typedef u32 compat_ulong_t; 44typedef u64 compat_u64; 45 46struct compat_timespec { 47 compat_time_t tv_sec; 48 s32 tv_nsec; 49}; 50 51struct compat_timeval { 52 compat_time_t tv_sec; 53 s32 tv_usec; 54}; 55 56struct compat_stat { 57 compat_dev_t st_dev; 58 s32 st_pad1[3]; 59 compat_ino_t st_ino; 60 compat_mode_t st_mode; 61 compat_nlink_t st_nlink; 62 __compat_uid_t st_uid; 63 __compat_gid_t st_gid; 64 compat_dev_t st_rdev; 65 s32 st_pad2[2]; 66 compat_off_t st_size; 67 s32 st_pad3; 68 compat_time_t st_atime; 69 s32 st_atime_nsec; 70 compat_time_t st_mtime; 71 s32 st_mtime_nsec; 72 compat_time_t st_ctime; 73 s32 st_ctime_nsec; 74 s32 st_blksize; 75 s32 st_blocks; 76 s32 st_pad4[14]; 77}; 78 79struct compat_flock { 80 short l_type; 81 short l_whence; 82 compat_off_t l_start; 83 compat_off_t l_len; 84 s32 l_sysid; 85 compat_pid_t l_pid; 86 short __unused; 87 s32 pad[4]; 88}; 89 90#define F_GETLK64 33 91#define F_SETLK64 34 92#define F_SETLKW64 35 93 94struct compat_flock64 { 95 short l_type; 96 short l_whence; 97 compat_loff_t l_start; 98 compat_loff_t l_len; 99 compat_pid_t l_pid; 100}; 101 102struct compat_statfs { 103 int f_type; 104 int f_bsize; 105 int f_frsize; 106 int f_blocks; 107 int f_bfree; 108 int f_files; 109 int f_ffree; 110 int f_bavail; 111 compat_fsid_t f_fsid; 112 int f_namelen; 113 int f_spare[6]; 114}; 115 116#define COMPAT_RLIM_INFINITY 0x7fffffffUL 117 118typedef u32 compat_old_sigset_t; /* at least 32 bits */ 119 120#define _COMPAT_NSIG 128 /* Don't ask !$@#% ... */ 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 127 128/* 129 * A pointer passed in from user mode. This should not 130 * be used for syscall parameters, just declare them 131 * as pointers because the syscall entry code will have 132 * appropriately converted them already. 133 */ 134typedef u32 compat_uptr_t; 135 136static inline void __user *compat_ptr(compat_uptr_t uptr) 137{ 138 /* cast to a __user pointer via "unsigned long" makes sparse happy */ 139 return (void __user *)(unsigned long)(long)uptr; 140} 141 142static inline compat_uptr_t ptr_to_compat(void __user *uptr) 143{ 144 return (u32)(unsigned long)uptr; 145} 146 147static inline void __user *compat_alloc_user_space(long len) 148{ 149 struct pt_regs *regs = (struct pt_regs *) 150 ((unsigned long) current_thread_info() + THREAD_SIZE - 32) - 1; 151 152 return (void __user *) (regs->regs[29] - len); 153} 154 155struct compat_ipc64_perm { 156 compat_key_t key; 157 __compat_uid32_t uid; 158 __compat_gid32_t gid; 159 __compat_uid32_t cuid; 160 __compat_gid32_t cgid; 161 compat_mode_t mode; 162 unsigned short seq; 163 unsigned short __pad2; 164 compat_ulong_t __unused1; 165 compat_ulong_t __unused2; 166}; 167 168struct compat_semid64_ds { 169 struct compat_ipc64_perm sem_perm; 170 compat_time_t sem_otime; 171 compat_time_t sem_ctime; 172 compat_ulong_t sem_nsems; 173 compat_ulong_t __unused1; 174 compat_ulong_t __unused2; 175}; 176 177struct compat_msqid64_ds { 178 struct compat_ipc64_perm msg_perm; 179#ifndef CONFIG_CPU_LITTLE_ENDIAN 180 compat_ulong_t __unused1; 181#endif 182 compat_time_t msg_stime; 183#ifdef CONFIG_CPU_LITTLE_ENDIAN 184 compat_ulong_t __unused1; 185#endif 186#ifndef CONFIG_CPU_LITTLE_ENDIAN 187 compat_ulong_t __unused2; 188#endif 189 compat_time_t msg_rtime; 190#ifdef CONFIG_CPU_LITTLE_ENDIAN 191 compat_ulong_t __unused2; 192#endif 193#ifndef CONFIG_CPU_LITTLE_ENDIAN 194 compat_ulong_t __unused3; 195#endif 196 compat_time_t msg_ctime; 197#ifdef CONFIG_CPU_LITTLE_ENDIAN 198 compat_ulong_t __unused3; 199#endif 200 compat_ulong_t msg_cbytes; 201 compat_ulong_t msg_qnum; 202 compat_ulong_t msg_qbytes; 203 compat_pid_t msg_lspid; 204 compat_pid_t msg_lrpid; 205 compat_ulong_t __unused4; 206 compat_ulong_t __unused5; 207}; 208 209struct compat_shmid64_ds { 210 struct compat_ipc64_perm shm_perm; 211 compat_size_t shm_segsz; 212 compat_time_t shm_atime; 213 compat_time_t shm_dtime; 214 compat_time_t shm_ctime; 215 compat_pid_t shm_cpid; 216 compat_pid_t shm_lpid; 217 compat_ulong_t shm_nattch; 218 compat_ulong_t __unused1; 219 compat_ulong_t __unused2; 220}; 221 222static inline int is_compat_task(void) 223{ 224 return test_thread_flag(TIF_32BIT); 225} 226 227#endif /* _ASM_COMPAT_H */ 228