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 14 typedef u32 compat_size_t; 15 typedef s32 compat_ssize_t; 16 typedef s32 compat_time_t; 17 typedef s32 compat_clock_t; 18 typedef s32 compat_suseconds_t; 19 20 typedef s32 compat_pid_t; 21 typedef s32 __compat_uid_t; 22 typedef s32 __compat_gid_t; 23 typedef __compat_uid_t __compat_uid32_t; 24 typedef __compat_gid_t __compat_gid32_t; 25 typedef u32 compat_mode_t; 26 typedef u32 compat_ino_t; 27 typedef u32 compat_dev_t; 28 typedef s32 compat_off_t; 29 typedef s64 compat_loff_t; 30 typedef u32 compat_nlink_t; 31 typedef s32 compat_ipc_pid_t; 32 typedef s32 compat_daddr_t; 33 typedef s32 compat_caddr_t; 34 typedef struct { 35 s32 val[2]; 36 } compat_fsid_t; 37 typedef s32 compat_timer_t; 38 typedef s32 compat_key_t; 39 40 typedef s32 compat_int_t; 41 typedef s32 compat_long_t; 42 typedef s64 compat_s64; 43 typedef u32 compat_uint_t; 44 typedef u32 compat_ulong_t; 45 typedef u64 compat_u64; 46 typedef u32 compat_uptr_t; 47 48 struct compat_timespec { 49 compat_time_t tv_sec; 50 s32 tv_nsec; 51 }; 52 53 struct compat_timeval { 54 compat_time_t tv_sec; 55 s32 tv_usec; 56 }; 57 58 struct compat_stat { 59 compat_dev_t st_dev; 60 s32 st_pad1[3]; 61 compat_ino_t st_ino; 62 compat_mode_t st_mode; 63 compat_nlink_t st_nlink; 64 __compat_uid_t st_uid; 65 __compat_gid_t st_gid; 66 compat_dev_t st_rdev; 67 s32 st_pad2[2]; 68 compat_off_t st_size; 69 s32 st_pad3; 70 compat_time_t st_atime; 71 s32 st_atime_nsec; 72 compat_time_t st_mtime; 73 s32 st_mtime_nsec; 74 compat_time_t st_ctime; 75 s32 st_ctime_nsec; 76 s32 st_blksize; 77 s32 st_blocks; 78 s32 st_pad4[14]; 79 }; 80 81 struct compat_flock { 82 short l_type; 83 short l_whence; 84 compat_off_t l_start; 85 compat_off_t l_len; 86 s32 l_sysid; 87 compat_pid_t l_pid; 88 short __unused; 89 s32 pad[4]; 90 }; 91 92 #define F_GETLK64 33 93 #define F_SETLK64 34 94 #define F_SETLKW64 35 95 96 struct compat_flock64 { 97 short l_type; 98 short l_whence; 99 compat_loff_t l_start; 100 compat_loff_t l_len; 101 compat_pid_t l_pid; 102 }; 103 104 struct compat_statfs { 105 int f_type; 106 int f_bsize; 107 int f_frsize; 108 int f_blocks; 109 int f_bfree; 110 int f_files; 111 int f_ffree; 112 int f_bavail; 113 compat_fsid_t f_fsid; 114 int f_namelen; 115 int f_flags; 116 int f_spare[5]; 117 }; 118 119 #define COMPAT_RLIM_INFINITY 0x7fffffffUL 120 121 typedef u32 compat_old_sigset_t; /* at least 32 bits */ 122 123 #define _COMPAT_NSIG 128 /* Don't ask !$@#% ... */ 124 #define _COMPAT_NSIG_BPW 32 125 126 typedef u32 compat_sigset_word; 127 128 typedef union compat_sigval { 129 compat_int_t sival_int; 130 compat_uptr_t sival_ptr; 131 } compat_sigval_t; 132 133 /* Can't use the generic version because si_code and si_errno are swapped */ 134 135 #define SI_PAD_SIZE32 (128/sizeof(int) - 3) 136 137 typedef struct compat_siginfo { 138 int si_signo; 139 int si_code; 140 int si_errno; 141 142 union { 143 int _pad[128 / sizeof(int) - 3]; 144 145 /* kill() */ 146 struct { 147 compat_pid_t _pid; /* sender's pid */ 148 __compat_uid32_t _uid; /* sender's uid */ 149 } _kill; 150 151 /* POSIX.1b timers */ 152 struct { 153 compat_timer_t _tid; /* timer id */ 154 int _overrun; /* overrun count */ 155 compat_sigval_t _sigval; /* same as below */ 156 } _timer; 157 158 /* POSIX.1b signals */ 159 struct { 160 compat_pid_t _pid; /* sender's pid */ 161 __compat_uid32_t _uid; /* sender's uid */ 162 compat_sigval_t _sigval; 163 } _rt; 164 165 /* SIGCHLD */ 166 struct { 167 compat_pid_t _pid; /* which child */ 168 __compat_uid32_t _uid; /* sender's uid */ 169 int _status; /* exit code */ 170 compat_clock_t _utime; 171 compat_clock_t _stime; 172 } _sigchld; 173 174 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */ 175 struct { 176 compat_uptr_t _addr; /* faulting insn/memory ref. */ 177 #ifdef __ARCH_SI_TRAPNO 178 int _trapno; /* TRAP # which caused the signal */ 179 #endif 180 short _addr_lsb; /* LSB of the reported address */ 181 struct { 182 compat_uptr_t _lower; 183 compat_uptr_t _upper; 184 } _addr_bnd; 185 } _sigfault; 186 187 /* SIGPOLL */ 188 struct { 189 compat_long_t _band; /* POLL_IN, POLL_OUT, POLL_MSG */ 190 int _fd; 191 } _sigpoll; 192 193 struct { 194 compat_uptr_t _call_addr; /* calling insn */ 195 int _syscall; /* triggering system call number */ 196 compat_uint_t _arch; /* AUDIT_ARCH_* of syscall */ 197 } _sigsys; 198 } _sifields; 199 } compat_siginfo_t; 200 201 #define COMPAT_OFF_T_MAX 0x7fffffff 202 #define COMPAT_LOFF_T_MAX 0x7fffffffffffffffL 203 204 /* 205 * A pointer passed in from user mode. This should not 206 * be used for syscall parameters, just declare them 207 * as pointers because the syscall entry code will have 208 * appropriately converted them already. 209 */ 210 211 static inline void __user *compat_ptr(compat_uptr_t uptr) 212 { 213 /* cast to a __user pointer via "unsigned long" makes sparse happy */ 214 return (void __user *)(unsigned long)(long)uptr; 215 } 216 217 static inline compat_uptr_t ptr_to_compat(void __user *uptr) 218 { 219 return (u32)(unsigned long)uptr; 220 } 221 222 static inline void __user *arch_compat_alloc_user_space(long len) 223 { 224 struct pt_regs *regs = (struct pt_regs *) 225 ((unsigned long) current_thread_info() + THREAD_SIZE - 32) - 1; 226 227 return (void __user *) (regs->regs[29] - len); 228 } 229 230 struct compat_ipc64_perm { 231 compat_key_t key; 232 __compat_uid32_t uid; 233 __compat_gid32_t gid; 234 __compat_uid32_t cuid; 235 __compat_gid32_t cgid; 236 compat_mode_t mode; 237 unsigned short seq; 238 unsigned short __pad2; 239 compat_ulong_t __unused1; 240 compat_ulong_t __unused2; 241 }; 242 243 struct compat_semid64_ds { 244 struct compat_ipc64_perm sem_perm; 245 compat_time_t sem_otime; 246 compat_time_t sem_ctime; 247 compat_ulong_t sem_nsems; 248 compat_ulong_t __unused1; 249 compat_ulong_t __unused2; 250 }; 251 252 struct compat_msqid64_ds { 253 struct compat_ipc64_perm msg_perm; 254 #ifndef CONFIG_CPU_LITTLE_ENDIAN 255 compat_ulong_t __unused1; 256 #endif 257 compat_time_t msg_stime; 258 #ifdef CONFIG_CPU_LITTLE_ENDIAN 259 compat_ulong_t __unused1; 260 #endif 261 #ifndef CONFIG_CPU_LITTLE_ENDIAN 262 compat_ulong_t __unused2; 263 #endif 264 compat_time_t msg_rtime; 265 #ifdef CONFIG_CPU_LITTLE_ENDIAN 266 compat_ulong_t __unused2; 267 #endif 268 #ifndef CONFIG_CPU_LITTLE_ENDIAN 269 compat_ulong_t __unused3; 270 #endif 271 compat_time_t msg_ctime; 272 #ifdef CONFIG_CPU_LITTLE_ENDIAN 273 compat_ulong_t __unused3; 274 #endif 275 compat_ulong_t msg_cbytes; 276 compat_ulong_t msg_qnum; 277 compat_ulong_t msg_qbytes; 278 compat_pid_t msg_lspid; 279 compat_pid_t msg_lrpid; 280 compat_ulong_t __unused4; 281 compat_ulong_t __unused5; 282 }; 283 284 struct compat_shmid64_ds { 285 struct compat_ipc64_perm shm_perm; 286 compat_size_t shm_segsz; 287 compat_time_t shm_atime; 288 compat_time_t shm_dtime; 289 compat_time_t shm_ctime; 290 compat_pid_t shm_cpid; 291 compat_pid_t shm_lpid; 292 compat_ulong_t shm_nattch; 293 compat_ulong_t __unused1; 294 compat_ulong_t __unused2; 295 }; 296 297 /* MIPS has unusual order of fields in stack_t */ 298 typedef struct compat_sigaltstack { 299 compat_uptr_t ss_sp; 300 compat_size_t ss_size; 301 int ss_flags; 302 } compat_stack_t; 303 #define compat_sigaltstack compat_sigaltstack 304 305 static inline int is_compat_task(void) 306 { 307 return test_thread_flag(TIF_32BIT_ADDR); 308 } 309 310 #endif /* _ASM_COMPAT_H */ 311