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#define COMPAT_UTS_MACHINE "mips\0\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_suseconds_t; 19 20typedef s32 compat_pid_t; 21typedef s32 __compat_uid_t; 22typedef s32 __compat_gid_t; 23typedef __compat_uid_t __compat_uid32_t; 24typedef __compat_gid_t __compat_gid32_t; 25typedef u32 compat_mode_t; 26typedef u32 compat_ino_t; 27typedef u32 compat_dev_t; 28typedef s32 compat_off_t; 29typedef s64 compat_loff_t; 30typedef u32 compat_nlink_t; 31typedef s32 compat_ipc_pid_t; 32typedef s32 compat_daddr_t; 33typedef s32 compat_caddr_t; 34typedef struct { 35 s32 val[2]; 36} compat_fsid_t; 37typedef s32 compat_timer_t; 38typedef s32 compat_key_t; 39 40typedef s32 compat_int_t; 41typedef s32 compat_long_t; 42typedef s64 compat_s64; 43typedef u32 compat_uint_t; 44typedef u32 compat_ulong_t; 45typedef u64 compat_u64; 46 47struct compat_timespec { 48 compat_time_t tv_sec; 49 s32 tv_nsec; 50}; 51 52struct compat_timeval { 53 compat_time_t tv_sec; 54 s32 tv_usec; 55}; 56 57struct compat_stat { 58 compat_dev_t st_dev; 59 s32 st_pad1[3]; 60 compat_ino_t st_ino; 61 compat_mode_t st_mode; 62 compat_nlink_t st_nlink; 63 __compat_uid_t st_uid; 64 __compat_gid_t st_gid; 65 compat_dev_t st_rdev; 66 s32 st_pad2[2]; 67 compat_off_t st_size; 68 s32 st_pad3; 69 compat_time_t st_atime; 70 s32 st_atime_nsec; 71 compat_time_t st_mtime; 72 s32 st_mtime_nsec; 73 compat_time_t st_ctime; 74 s32 st_ctime_nsec; 75 s32 st_blksize; 76 s32 st_blocks; 77 s32 st_pad4[14]; 78}; 79 80struct compat_flock { 81 short l_type; 82 short l_whence; 83 compat_off_t l_start; 84 compat_off_t l_len; 85 s32 l_sysid; 86 compat_pid_t l_pid; 87 short __unused; 88 s32 pad[4]; 89}; 90 91#define F_GETLK64 33 92#define F_SETLK64 34 93#define F_SETLKW64 35 94 95struct compat_flock64 { 96 short l_type; 97 short l_whence; 98 compat_loff_t l_start; 99 compat_loff_t l_len; 100 compat_pid_t l_pid; 101}; 102 103struct compat_statfs { 104 int f_type; 105 int f_bsize; 106 int f_frsize; 107 int f_blocks; 108 int f_bfree; 109 int f_files; 110 int f_ffree; 111 int f_bavail; 112 compat_fsid_t f_fsid; 113 int f_namelen; 114 int f_flags; 115 int f_spare[5]; 116}; 117 118#define COMPAT_RLIM_INFINITY 0x7fffffffUL 119 120typedef u32 compat_old_sigset_t; /* at least 32 bits */ 121 122#define _COMPAT_NSIG 128 /* Don't ask !$@#% ... */ 123#define _COMPAT_NSIG_BPW 32 124 125typedef u32 compat_sigset_word; 126 127#define COMPAT_OFF_T_MAX 0x7fffffff 128#define COMPAT_LOFF_T_MAX 0x7fffffffffffffffL 129 130/* 131 * A pointer passed in from user mode. This should not 132 * be used for syscall parameters, just declare them 133 * as pointers because the syscall entry code will have 134 * appropriately converted them already. 135 */ 136typedef u32 compat_uptr_t; 137 138static inline void __user *compat_ptr(compat_uptr_t uptr) 139{ 140 /* cast to a __user pointer via "unsigned long" makes sparse happy */ 141 return (void __user *)(unsigned long)(long)uptr; 142} 143 144static inline compat_uptr_t ptr_to_compat(void __user *uptr) 145{ 146 return (u32)(unsigned long)uptr; 147} 148 149static inline void __user *arch_compat_alloc_user_space(long len) 150{ 151 struct pt_regs *regs = (struct pt_regs *) 152 ((unsigned long) current_thread_info() + THREAD_SIZE - 32) - 1; 153 154 return (void __user *) (regs->regs[29] - len); 155} 156 157struct compat_ipc64_perm { 158 compat_key_t key; 159 __compat_uid32_t uid; 160 __compat_gid32_t gid; 161 __compat_uid32_t cuid; 162 __compat_gid32_t cgid; 163 compat_mode_t mode; 164 unsigned short seq; 165 unsigned short __pad2; 166 compat_ulong_t __unused1; 167 compat_ulong_t __unused2; 168}; 169 170struct compat_semid64_ds { 171 struct compat_ipc64_perm sem_perm; 172 compat_time_t sem_otime; 173 compat_time_t sem_ctime; 174 compat_ulong_t sem_nsems; 175 compat_ulong_t __unused1; 176 compat_ulong_t __unused2; 177}; 178 179struct compat_msqid64_ds { 180 struct compat_ipc64_perm msg_perm; 181#ifndef CONFIG_CPU_LITTLE_ENDIAN 182 compat_ulong_t __unused1; 183#endif 184 compat_time_t msg_stime; 185#ifdef CONFIG_CPU_LITTLE_ENDIAN 186 compat_ulong_t __unused1; 187#endif 188#ifndef CONFIG_CPU_LITTLE_ENDIAN 189 compat_ulong_t __unused2; 190#endif 191 compat_time_t msg_rtime; 192#ifdef CONFIG_CPU_LITTLE_ENDIAN 193 compat_ulong_t __unused2; 194#endif 195#ifndef CONFIG_CPU_LITTLE_ENDIAN 196 compat_ulong_t __unused3; 197#endif 198 compat_time_t msg_ctime; 199#ifdef CONFIG_CPU_LITTLE_ENDIAN 200 compat_ulong_t __unused3; 201#endif 202 compat_ulong_t msg_cbytes; 203 compat_ulong_t msg_qnum; 204 compat_ulong_t msg_qbytes; 205 compat_pid_t msg_lspid; 206 compat_pid_t msg_lrpid; 207 compat_ulong_t __unused4; 208 compat_ulong_t __unused5; 209}; 210 211struct compat_shmid64_ds { 212 struct compat_ipc64_perm shm_perm; 213 compat_size_t shm_segsz; 214 compat_time_t shm_atime; 215 compat_time_t shm_dtime; 216 compat_time_t shm_ctime; 217 compat_pid_t shm_cpid; 218 compat_pid_t shm_lpid; 219 compat_ulong_t shm_nattch; 220 compat_ulong_t __unused1; 221 compat_ulong_t __unused2; 222}; 223 224static inline int is_compat_task(void) 225{ 226 return test_thread_flag(TIF_32BIT); 227} 228 229#endif /* _ASM_COMPAT_H */ 230