1 #ifndef _LINUX_COMPAT_H 2 #define _LINUX_COMPAT_H 3 /* 4 * These are the type definitions for the architecture specific 5 * syscall compatibility layer. 6 */ 7 8 #ifdef CONFIG_COMPAT 9 10 #include <linux/stat.h> 11 #include <linux/param.h> /* for HZ */ 12 #include <linux/sem.h> 13 #include <linux/socket.h> 14 #include <linux/if.h> 15 16 #include <asm/compat.h> 17 #include <asm/siginfo.h> 18 #include <asm/signal.h> 19 20 #define compat_jiffies_to_clock_t(x) \ 21 (((unsigned long)(x) * COMPAT_USER_HZ) / HZ) 22 23 typedef __compat_uid32_t compat_uid_t; 24 typedef __compat_gid32_t compat_gid_t; 25 26 struct compat_sel_arg_struct; 27 struct rusage; 28 29 struct compat_itimerspec { 30 struct compat_timespec it_interval; 31 struct compat_timespec it_value; 32 }; 33 34 struct compat_utimbuf { 35 compat_time_t actime; 36 compat_time_t modtime; 37 }; 38 39 struct compat_itimerval { 40 struct compat_timeval it_interval; 41 struct compat_timeval it_value; 42 }; 43 44 struct compat_tms { 45 compat_clock_t tms_utime; 46 compat_clock_t tms_stime; 47 compat_clock_t tms_cutime; 48 compat_clock_t tms_cstime; 49 }; 50 51 struct compat_timex { 52 compat_uint_t modes; 53 compat_long_t offset; 54 compat_long_t freq; 55 compat_long_t maxerror; 56 compat_long_t esterror; 57 compat_int_t status; 58 compat_long_t constant; 59 compat_long_t precision; 60 compat_long_t tolerance; 61 struct compat_timeval time; 62 compat_long_t tick; 63 compat_long_t ppsfreq; 64 compat_long_t jitter; 65 compat_int_t shift; 66 compat_long_t stabil; 67 compat_long_t jitcnt; 68 compat_long_t calcnt; 69 compat_long_t errcnt; 70 compat_long_t stbcnt; 71 compat_int_t tai; 72 73 compat_int_t :32; compat_int_t :32; compat_int_t :32; compat_int_t :32; 74 compat_int_t :32; compat_int_t :32; compat_int_t :32; compat_int_t :32; 75 compat_int_t :32; compat_int_t :32; compat_int_t :32; 76 }; 77 78 #define _COMPAT_NSIG_WORDS (_COMPAT_NSIG / _COMPAT_NSIG_BPW) 79 80 typedef struct { 81 compat_sigset_word sig[_COMPAT_NSIG_WORDS]; 82 } compat_sigset_t; 83 84 extern int get_compat_timespec(struct timespec *, const struct compat_timespec __user *); 85 extern int put_compat_timespec(const struct timespec *, struct compat_timespec __user *); 86 87 struct compat_iovec { 88 compat_uptr_t iov_base; 89 compat_size_t iov_len; 90 }; 91 92 struct compat_rlimit { 93 compat_ulong_t rlim_cur; 94 compat_ulong_t rlim_max; 95 }; 96 97 struct compat_rusage { 98 struct compat_timeval ru_utime; 99 struct compat_timeval ru_stime; 100 compat_long_t ru_maxrss; 101 compat_long_t ru_ixrss; 102 compat_long_t ru_idrss; 103 compat_long_t ru_isrss; 104 compat_long_t ru_minflt; 105 compat_long_t ru_majflt; 106 compat_long_t ru_nswap; 107 compat_long_t ru_inblock; 108 compat_long_t ru_oublock; 109 compat_long_t ru_msgsnd; 110 compat_long_t ru_msgrcv; 111 compat_long_t ru_nsignals; 112 compat_long_t ru_nvcsw; 113 compat_long_t ru_nivcsw; 114 }; 115 116 extern int put_compat_rusage(const struct rusage *, struct compat_rusage __user *); 117 118 struct compat_siginfo; 119 120 extern asmlinkage long compat_sys_waitid(int, compat_pid_t, 121 struct compat_siginfo __user *, int, 122 struct compat_rusage __user *); 123 124 struct compat_dirent { 125 u32 d_ino; 126 compat_off_t d_off; 127 u16 d_reclen; 128 char d_name[256]; 129 }; 130 131 struct compat_ustat { 132 compat_daddr_t f_tfree; 133 compat_ino_t f_tinode; 134 char f_fname[6]; 135 char f_fpack[6]; 136 }; 137 138 typedef union compat_sigval { 139 compat_int_t sival_int; 140 compat_uptr_t sival_ptr; 141 } compat_sigval_t; 142 143 #define COMPAT_SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE/sizeof(int)) - 3) 144 145 typedef struct compat_sigevent { 146 compat_sigval_t sigev_value; 147 compat_int_t sigev_signo; 148 compat_int_t sigev_notify; 149 union { 150 compat_int_t _pad[COMPAT_SIGEV_PAD_SIZE]; 151 compat_int_t _tid; 152 153 struct { 154 compat_uptr_t _function; 155 compat_uptr_t _attribute; 156 } _sigev_thread; 157 } _sigev_un; 158 } compat_sigevent_t; 159 160 struct compat_ifmap { 161 compat_ulong_t mem_start; 162 compat_ulong_t mem_end; 163 unsigned short base_addr; 164 unsigned char irq; 165 unsigned char dma; 166 unsigned char port; 167 }; 168 169 struct compat_if_settings 170 { 171 unsigned int type; /* Type of physical device or protocol */ 172 unsigned int size; /* Size of the data allocated by the caller */ 173 compat_uptr_t ifs_ifsu; /* union of pointers */ 174 }; 175 176 struct compat_ifreq { 177 union { 178 char ifrn_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 179 } ifr_ifrn; 180 union { 181 struct sockaddr ifru_addr; 182 struct sockaddr ifru_dstaddr; 183 struct sockaddr ifru_broadaddr; 184 struct sockaddr ifru_netmask; 185 struct sockaddr ifru_hwaddr; 186 short ifru_flags; 187 compat_int_t ifru_ivalue; 188 compat_int_t ifru_mtu; 189 struct compat_ifmap ifru_map; 190 char ifru_slave[IFNAMSIZ]; /* Just fits the size */ 191 char ifru_newname[IFNAMSIZ]; 192 compat_caddr_t ifru_data; 193 struct compat_if_settings ifru_settings; 194 } ifr_ifru; 195 }; 196 197 struct compat_ifconf { 198 compat_int_t ifc_len; /* size of buffer */ 199 compat_caddr_t ifcbuf; 200 }; 201 202 struct compat_robust_list { 203 compat_uptr_t next; 204 }; 205 206 struct compat_robust_list_head { 207 struct compat_robust_list list; 208 compat_long_t futex_offset; 209 compat_uptr_t list_op_pending; 210 }; 211 212 extern void compat_exit_robust_list(struct task_struct *curr); 213 214 asmlinkage long 215 compat_sys_set_robust_list(struct compat_robust_list_head __user *head, 216 compat_size_t len); 217 asmlinkage long 218 compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr, 219 compat_size_t __user *len_ptr); 220 221 long compat_sys_semctl(int first, int second, int third, void __user *uptr); 222 long compat_sys_msgsnd(int first, int second, int third, void __user *uptr); 223 long compat_sys_msgrcv(int first, int second, int msgtyp, int third, 224 int version, void __user *uptr); 225 long compat_sys_msgctl(int first, int second, void __user *uptr); 226 long compat_sys_shmat(int first, int second, compat_uptr_t third, int version, 227 void __user *uptr); 228 long compat_sys_shmctl(int first, int second, void __user *uptr); 229 long compat_sys_semtimedop(int semid, struct sembuf __user *tsems, 230 unsigned nsems, const struct compat_timespec __user *timeout); 231 asmlinkage long compat_sys_keyctl(u32 option, 232 u32 arg2, u32 arg3, u32 arg4, u32 arg5); 233 asmlinkage long compat_sys_ustat(unsigned dev, struct compat_ustat __user *u32); 234 235 asmlinkage ssize_t compat_sys_readv(unsigned long fd, 236 const struct compat_iovec __user *vec, unsigned long vlen); 237 asmlinkage ssize_t compat_sys_writev(unsigned long fd, 238 const struct compat_iovec __user *vec, unsigned long vlen); 239 asmlinkage ssize_t compat_sys_preadv(unsigned long fd, 240 const struct compat_iovec __user *vec, 241 unsigned long vlen, u32 pos_low, u32 pos_high); 242 asmlinkage ssize_t compat_sys_pwritev(unsigned long fd, 243 const struct compat_iovec __user *vec, 244 unsigned long vlen, u32 pos_low, u32 pos_high); 245 246 int compat_do_execve(char * filename, compat_uptr_t __user *argv, 247 compat_uptr_t __user *envp, struct pt_regs * regs); 248 249 asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp, 250 compat_ulong_t __user *outp, compat_ulong_t __user *exp, 251 struct compat_timeval __user *tvp); 252 253 asmlinkage long compat_sys_old_select(struct compat_sel_arg_struct __user *arg); 254 255 asmlinkage long compat_sys_wait4(compat_pid_t pid, 256 compat_uint_t __user *stat_addr, int options, 257 struct compat_rusage __user *ru); 258 259 #define BITS_PER_COMPAT_LONG (8*sizeof(compat_long_t)) 260 261 #define BITS_TO_COMPAT_LONGS(bits) \ 262 (((bits)+BITS_PER_COMPAT_LONG-1)/BITS_PER_COMPAT_LONG) 263 264 long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask, 265 unsigned long bitmap_size); 266 long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask, 267 unsigned long bitmap_size); 268 int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user *from); 269 int copy_siginfo_to_user32(struct compat_siginfo __user *to, siginfo_t *from); 270 int get_compat_sigevent(struct sigevent *event, 271 const struct compat_sigevent __user *u_event); 272 long compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid, compat_pid_t pid, int sig, 273 struct compat_siginfo __user *uinfo); 274 275 static inline int compat_timeval_compare(struct compat_timeval *lhs, 276 struct compat_timeval *rhs) 277 { 278 if (lhs->tv_sec < rhs->tv_sec) 279 return -1; 280 if (lhs->tv_sec > rhs->tv_sec) 281 return 1; 282 return lhs->tv_usec - rhs->tv_usec; 283 } 284 285 static inline int compat_timespec_compare(struct compat_timespec *lhs, 286 struct compat_timespec *rhs) 287 { 288 if (lhs->tv_sec < rhs->tv_sec) 289 return -1; 290 if (lhs->tv_sec > rhs->tv_sec) 291 return 1; 292 return lhs->tv_nsec - rhs->tv_nsec; 293 } 294 295 extern int get_compat_itimerspec(struct itimerspec *dst, 296 const struct compat_itimerspec __user *src); 297 extern int put_compat_itimerspec(struct compat_itimerspec __user *dst, 298 const struct itimerspec *src); 299 300 asmlinkage long compat_sys_gettimeofday(struct compat_timeval __user *tv, 301 struct timezone __user *tz); 302 asmlinkage long compat_sys_settimeofday(struct compat_timeval __user *tv, 303 struct timezone __user *tz); 304 305 asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp); 306 307 extern int compat_printk(const char *fmt, ...); 308 extern void sigset_from_compat(sigset_t *set, compat_sigset_t *compat); 309 310 asmlinkage long compat_sys_migrate_pages(compat_pid_t pid, 311 compat_ulong_t maxnode, const compat_ulong_t __user *old_nodes, 312 const compat_ulong_t __user *new_nodes); 313 314 extern int compat_ptrace_request(struct task_struct *child, 315 compat_long_t request, 316 compat_ulong_t addr, compat_ulong_t data); 317 318 extern long compat_arch_ptrace(struct task_struct *child, compat_long_t request, 319 compat_ulong_t addr, compat_ulong_t data); 320 asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid, 321 compat_long_t addr, compat_long_t data); 322 323 /* 324 * epoll (fs/eventpoll.c) compat bits follow ... 325 */ 326 struct epoll_event; 327 #define compat_epoll_event epoll_event 328 asmlinkage long compat_sys_epoll_pwait(int epfd, 329 struct compat_epoll_event __user *events, 330 int maxevents, int timeout, 331 const compat_sigset_t __user *sigmask, 332 compat_size_t sigsetsize); 333 334 asmlinkage long compat_sys_utimensat(unsigned int dfd, const char __user *filename, 335 struct compat_timespec __user *t, int flags); 336 337 asmlinkage long compat_sys_signalfd(int ufd, 338 const compat_sigset_t __user *sigmask, 339 compat_size_t sigsetsize); 340 asmlinkage long compat_sys_timerfd_settime(int ufd, int flags, 341 const struct compat_itimerspec __user *utmr, 342 struct compat_itimerspec __user *otmr); 343 asmlinkage long compat_sys_timerfd_gettime(int ufd, 344 struct compat_itimerspec __user *otmr); 345 346 asmlinkage long compat_sys_move_pages(pid_t pid, unsigned long nr_page, 347 __u32 __user *pages, 348 const int __user *nodes, 349 int __user *status, 350 int flags); 351 asmlinkage long compat_sys_futimesat(unsigned int dfd, const char __user *filename, 352 struct compat_timeval __user *t); 353 asmlinkage long compat_sys_newfstatat(unsigned int dfd, const char __user * filename, 354 struct compat_stat __user *statbuf, 355 int flag); 356 asmlinkage long compat_sys_openat(unsigned int dfd, const char __user *filename, 357 int flags, int mode); 358 359 extern ssize_t compat_rw_copy_check_uvector(int type, 360 const struct compat_iovec __user *uvector, unsigned long nr_segs, 361 unsigned long fast_segs, struct iovec *fast_pointer, 362 struct iovec **ret_pointer); 363 364 extern void __user *compat_alloc_user_space(unsigned long len); 365 366 #endif /* CONFIG_COMPAT */ 367 #endif /* _LINUX_COMPAT_H */ 368