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 #define SI_PAD_SIZE32 (128/sizeof(int) - 3) 134 135 typedef struct compat_siginfo { 136 int si_signo; 137 int si_code; 138 int si_errno; 139 140 union { 141 int _pad[SI_PAD_SIZE32]; 142 143 /* kill() */ 144 struct { 145 compat_pid_t _pid; /* sender's pid */ 146 __compat_uid_t _uid; /* sender's uid */ 147 } _kill; 148 149 /* SIGCHLD */ 150 struct { 151 compat_pid_t _pid; /* which child */ 152 __compat_uid_t _uid; /* sender's uid */ 153 int _status; /* exit code */ 154 compat_clock_t _utime; 155 compat_clock_t _stime; 156 } _sigchld; 157 158 /* IRIX SIGCHLD */ 159 struct { 160 compat_pid_t _pid; /* which child */ 161 compat_clock_t _utime; 162 int _status; /* exit code */ 163 compat_clock_t _stime; 164 } _irix_sigchld; 165 166 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */ 167 struct { 168 s32 _addr; /* faulting insn/memory ref. */ 169 } _sigfault; 170 171 /* SIGPOLL, SIGXFSZ (To do ...) */ 172 struct { 173 int _band; /* POLL_IN, POLL_OUT, POLL_MSG */ 174 int _fd; 175 } _sigpoll; 176 177 /* POSIX.1b timers */ 178 struct { 179 timer_t _tid; /* timer id */ 180 int _overrun; /* overrun count */ 181 compat_sigval_t _sigval;/* same as below */ 182 int _sys_private; /* not to be passed to user */ 183 } _timer; 184 185 /* POSIX.1b signals */ 186 struct { 187 compat_pid_t _pid; /* sender's pid */ 188 __compat_uid_t _uid; /* sender's uid */ 189 compat_sigval_t _sigval; 190 } _rt; 191 192 } _sifields; 193 } compat_siginfo_t; 194 195 #define COMPAT_OFF_T_MAX 0x7fffffff 196 #define COMPAT_LOFF_T_MAX 0x7fffffffffffffffL 197 198 /* 199 * A pointer passed in from user mode. This should not 200 * be used for syscall parameters, just declare them 201 * as pointers because the syscall entry code will have 202 * appropriately converted them already. 203 */ 204 205 static inline void __user *compat_ptr(compat_uptr_t uptr) 206 { 207 /* cast to a __user pointer via "unsigned long" makes sparse happy */ 208 return (void __user *)(unsigned long)(long)uptr; 209 } 210 211 static inline compat_uptr_t ptr_to_compat(void __user *uptr) 212 { 213 return (u32)(unsigned long)uptr; 214 } 215 216 static inline void __user *arch_compat_alloc_user_space(long len) 217 { 218 struct pt_regs *regs = (struct pt_regs *) 219 ((unsigned long) current_thread_info() + THREAD_SIZE - 32) - 1; 220 221 return (void __user *) (regs->regs[29] - len); 222 } 223 224 struct compat_ipc64_perm { 225 compat_key_t key; 226 __compat_uid32_t uid; 227 __compat_gid32_t gid; 228 __compat_uid32_t cuid; 229 __compat_gid32_t cgid; 230 compat_mode_t mode; 231 unsigned short seq; 232 unsigned short __pad2; 233 compat_ulong_t __unused1; 234 compat_ulong_t __unused2; 235 }; 236 237 struct compat_semid64_ds { 238 struct compat_ipc64_perm sem_perm; 239 compat_time_t sem_otime; 240 compat_time_t sem_ctime; 241 compat_ulong_t sem_nsems; 242 compat_ulong_t __unused1; 243 compat_ulong_t __unused2; 244 }; 245 246 struct compat_msqid64_ds { 247 struct compat_ipc64_perm msg_perm; 248 #ifndef CONFIG_CPU_LITTLE_ENDIAN 249 compat_ulong_t __unused1; 250 #endif 251 compat_time_t msg_stime; 252 #ifdef CONFIG_CPU_LITTLE_ENDIAN 253 compat_ulong_t __unused1; 254 #endif 255 #ifndef CONFIG_CPU_LITTLE_ENDIAN 256 compat_ulong_t __unused2; 257 #endif 258 compat_time_t msg_rtime; 259 #ifdef CONFIG_CPU_LITTLE_ENDIAN 260 compat_ulong_t __unused2; 261 #endif 262 #ifndef CONFIG_CPU_LITTLE_ENDIAN 263 compat_ulong_t __unused3; 264 #endif 265 compat_time_t msg_ctime; 266 #ifdef CONFIG_CPU_LITTLE_ENDIAN 267 compat_ulong_t __unused3; 268 #endif 269 compat_ulong_t msg_cbytes; 270 compat_ulong_t msg_qnum; 271 compat_ulong_t msg_qbytes; 272 compat_pid_t msg_lspid; 273 compat_pid_t msg_lrpid; 274 compat_ulong_t __unused4; 275 compat_ulong_t __unused5; 276 }; 277 278 struct compat_shmid64_ds { 279 struct compat_ipc64_perm shm_perm; 280 compat_size_t shm_segsz; 281 compat_time_t shm_atime; 282 compat_time_t shm_dtime; 283 compat_time_t shm_ctime; 284 compat_pid_t shm_cpid; 285 compat_pid_t shm_lpid; 286 compat_ulong_t shm_nattch; 287 compat_ulong_t __unused1; 288 compat_ulong_t __unused2; 289 }; 290 291 /* MIPS has unusual order of fields in stack_t */ 292 typedef struct compat_sigaltstack { 293 compat_uptr_t ss_sp; 294 compat_size_t ss_size; 295 int ss_flags; 296 } compat_stack_t; 297 #define compat_sigaltstack compat_sigaltstack 298 299 static inline int is_compat_task(void) 300 { 301 return test_thread_flag(TIF_32BIT_ADDR); 302 } 303 304 #endif /* _ASM_COMPAT_H */ 305