1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_POWERPC_COMPAT_H 3 #define _ASM_POWERPC_COMPAT_H 4 #ifdef __KERNEL__ 5 /* 6 * Architecture specific compatibility types 7 */ 8 #include <linux/types.h> 9 #include <linux/sched.h> 10 11 #define COMPAT_USER_HZ 100 12 #ifdef __BIG_ENDIAN__ 13 #define COMPAT_UTS_MACHINE "ppc\0\0" 14 #else 15 #define COMPAT_UTS_MACHINE "ppcle\0\0" 16 #endif 17 18 typedef u32 compat_size_t; 19 typedef s32 compat_ssize_t; 20 typedef s32 compat_time_t; 21 typedef s32 compat_clock_t; 22 typedef s32 compat_pid_t; 23 typedef u32 __compat_uid_t; 24 typedef u32 __compat_gid_t; 25 typedef u32 __compat_uid32_t; 26 typedef u32 __compat_gid32_t; 27 typedef u32 compat_mode_t; 28 typedef u32 compat_ino_t; 29 typedef u32 compat_dev_t; 30 typedef s32 compat_off_t; 31 typedef s64 compat_loff_t; 32 typedef s16 compat_nlink_t; 33 typedef u16 compat_ipc_pid_t; 34 typedef s32 compat_daddr_t; 35 typedef u32 compat_caddr_t; 36 typedef __kernel_fsid_t compat_fsid_t; 37 typedef s32 compat_key_t; 38 typedef s32 compat_timer_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 compat_ino_t st_ino; 61 compat_mode_t st_mode; 62 compat_nlink_t st_nlink; 63 __compat_uid32_t st_uid; 64 __compat_gid32_t st_gid; 65 compat_dev_t st_rdev; 66 compat_off_t st_size; 67 compat_off_t st_blksize; 68 compat_off_t st_blocks; 69 compat_time_t st_atime; 70 u32 st_atime_nsec; 71 compat_time_t st_mtime; 72 u32 st_mtime_nsec; 73 compat_time_t st_ctime; 74 u32 st_ctime_nsec; 75 u32 __unused4[2]; 76 }; 77 78 struct compat_flock { 79 short l_type; 80 short l_whence; 81 compat_off_t l_start; 82 compat_off_t l_len; 83 compat_pid_t l_pid; 84 }; 85 86 #define F_GETLK64 12 /* using 'struct flock64' */ 87 #define F_SETLK64 13 88 #define F_SETLKW64 14 89 90 struct compat_flock64 { 91 short l_type; 92 short l_whence; 93 compat_loff_t l_start; 94 compat_loff_t l_len; 95 compat_pid_t l_pid; 96 }; 97 98 struct compat_statfs { 99 int f_type; 100 int f_bsize; 101 int f_blocks; 102 int f_bfree; 103 int f_bavail; 104 int f_files; 105 int f_ffree; 106 compat_fsid_t f_fsid; 107 int f_namelen; /* SunOS ignores this field. */ 108 int f_frsize; 109 int f_flags; 110 int f_spare[4]; 111 }; 112 113 #define COMPAT_RLIM_INFINITY 0xffffffff 114 115 typedef u32 compat_old_sigset_t; 116 117 #define _COMPAT_NSIG 64 118 #define _COMPAT_NSIG_BPW 32 119 120 typedef u32 compat_sigset_word; 121 122 typedef union compat_sigval { 123 compat_int_t sival_int; 124 compat_uptr_t sival_ptr; 125 } compat_sigval_t; 126 127 #define SI_PAD_SIZE32 (128/sizeof(int) - 3) 128 129 typedef struct compat_siginfo { 130 int si_signo; 131 int si_errno; 132 int si_code; 133 134 union { 135 int _pad[SI_PAD_SIZE32]; 136 137 /* kill() */ 138 struct { 139 compat_pid_t _pid; /* sender's pid */ 140 __compat_uid_t _uid; /* sender's uid */ 141 } _kill; 142 143 /* POSIX.1b timers */ 144 struct { 145 compat_timer_t _tid; /* timer id */ 146 int _overrun; /* overrun count */ 147 compat_sigval_t _sigval; /* same as below */ 148 int _sys_private; /* not to be passed to user */ 149 } _timer; 150 151 /* POSIX.1b signals */ 152 struct { 153 compat_pid_t _pid; /* sender's pid */ 154 __compat_uid_t _uid; /* sender's uid */ 155 compat_sigval_t _sigval; 156 } _rt; 157 158 /* SIGCHLD */ 159 struct { 160 compat_pid_t _pid; /* which child */ 161 __compat_uid_t _uid; /* sender's uid */ 162 int _status; /* exit code */ 163 compat_clock_t _utime; 164 compat_clock_t _stime; 165 } _sigchld; 166 167 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS, SIGEMT */ 168 struct { 169 unsigned int _addr; /* faulting insn/memory ref. */ 170 } _sigfault; 171 172 /* SIGPOLL */ 173 struct { 174 int _band; /* POLL_IN, POLL_OUT, POLL_MSG */ 175 int _fd; 176 } _sigpoll; 177 178 /* SIGSYS */ 179 struct { 180 unsigned int _call_addr; /* calling insn */ 181 int _syscall; /* triggering system call number */ 182 unsigned int _arch; /* AUDIT_ARCH_* of syscall */ 183 } _sigsys; 184 } _sifields; 185 } compat_siginfo_t; 186 187 #define COMPAT_OFF_T_MAX 0x7fffffff 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 */ 195 196 static inline void __user *compat_ptr(compat_uptr_t uptr) 197 { 198 return (void __user *)(unsigned long)uptr; 199 } 200 201 static inline compat_uptr_t ptr_to_compat(void __user *uptr) 202 { 203 return (u32)(unsigned long)uptr; 204 } 205 206 static inline void __user *arch_compat_alloc_user_space(long len) 207 { 208 struct pt_regs *regs = current->thread.regs; 209 unsigned long usp = regs->gpr[1]; 210 211 /* 212 * We can't access below the stack pointer in the 32bit ABI and 213 * can access 288 bytes in the 64bit big-endian ABI, 214 * or 512 bytes with the new ELFv2 little-endian ABI. 215 */ 216 if (!is_32bit_task()) 217 usp -= USER_REDZONE_SIZE; 218 219 return (void __user *) (usp - len); 220 } 221 222 /* 223 * ipc64_perm is actually 32/64bit clean but since the compat layer refers to 224 * it we may as well define it. 225 */ 226 struct compat_ipc64_perm { 227 compat_key_t key; 228 __compat_uid_t uid; 229 __compat_gid_t gid; 230 __compat_uid_t cuid; 231 __compat_gid_t cgid; 232 compat_mode_t mode; 233 unsigned int seq; 234 unsigned int __pad2; 235 unsigned long __unused1; /* yes they really are 64bit pads */ 236 unsigned long __unused2; 237 }; 238 239 struct compat_semid64_ds { 240 struct compat_ipc64_perm sem_perm; 241 unsigned int __unused1; 242 compat_time_t sem_otime; 243 unsigned int __unused2; 244 compat_time_t sem_ctime; 245 compat_ulong_t sem_nsems; 246 compat_ulong_t __unused3; 247 compat_ulong_t __unused4; 248 }; 249 250 struct compat_msqid64_ds { 251 struct compat_ipc64_perm msg_perm; 252 unsigned int __unused1; 253 compat_time_t msg_stime; 254 unsigned int __unused2; 255 compat_time_t msg_rtime; 256 unsigned int __unused3; 257 compat_time_t msg_ctime; 258 compat_ulong_t msg_cbytes; 259 compat_ulong_t msg_qnum; 260 compat_ulong_t msg_qbytes; 261 compat_pid_t msg_lspid; 262 compat_pid_t msg_lrpid; 263 compat_ulong_t __unused4; 264 compat_ulong_t __unused5; 265 }; 266 267 struct compat_shmid64_ds { 268 struct compat_ipc64_perm shm_perm; 269 unsigned int __unused1; 270 compat_time_t shm_atime; 271 unsigned int __unused2; 272 compat_time_t shm_dtime; 273 unsigned int __unused3; 274 compat_time_t shm_ctime; 275 unsigned int __unused4; 276 compat_size_t shm_segsz; 277 compat_pid_t shm_cpid; 278 compat_pid_t shm_lpid; 279 compat_ulong_t shm_nattch; 280 compat_ulong_t __unused5; 281 compat_ulong_t __unused6; 282 }; 283 284 static inline int is_compat_task(void) 285 { 286 return is_32bit_task(); 287 } 288 289 #endif /* __KERNEL__ */ 290 #endif /* _ASM_POWERPC_COMPAT_H */ 291