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 #include <linux/types.h> 9 10 #ifdef CONFIG_COMPAT 11 12 #include <linux/stat.h> 13 #include <linux/param.h> /* for HZ */ 14 #include <linux/sem.h> 15 #include <linux/socket.h> 16 #include <linux/if.h> 17 #include <linux/fs.h> 18 #include <linux/aio_abi.h> /* for aio_context_t */ 19 #include <linux/unistd.h> 20 21 #include <asm/compat.h> 22 #include <asm/siginfo.h> 23 #include <asm/signal.h> 24 25 #ifndef COMPAT_USE_64BIT_TIME 26 #define COMPAT_USE_64BIT_TIME 0 27 #endif 28 29 #ifndef __SC_DELOUSE 30 #define __SC_DELOUSE(t,v) ((__force t)(unsigned long)(v)) 31 #endif 32 33 #define COMPAT_SYSCALL_DEFINE0(name) \ 34 asmlinkage long compat_sys_##name(void) 35 36 #define COMPAT_SYSCALL_DEFINE1(name, ...) \ 37 COMPAT_SYSCALL_DEFINEx(1, _##name, __VA_ARGS__) 38 #define COMPAT_SYSCALL_DEFINE2(name, ...) \ 39 COMPAT_SYSCALL_DEFINEx(2, _##name, __VA_ARGS__) 40 #define COMPAT_SYSCALL_DEFINE3(name, ...) \ 41 COMPAT_SYSCALL_DEFINEx(3, _##name, __VA_ARGS__) 42 #define COMPAT_SYSCALL_DEFINE4(name, ...) \ 43 COMPAT_SYSCALL_DEFINEx(4, _##name, __VA_ARGS__) 44 #define COMPAT_SYSCALL_DEFINE5(name, ...) \ 45 COMPAT_SYSCALL_DEFINEx(5, _##name, __VA_ARGS__) 46 #define COMPAT_SYSCALL_DEFINE6(name, ...) \ 47 COMPAT_SYSCALL_DEFINEx(6, _##name, __VA_ARGS__) 48 49 #define COMPAT_SYSCALL_DEFINEx(x, name, ...) \ 50 asmlinkage long compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))\ 51 __attribute__((alias(__stringify(compat_SyS##name)))); \ 52 static inline long C_SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__));\ 53 asmlinkage long compat_SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__));\ 54 asmlinkage long compat_SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__))\ 55 { \ 56 return C_SYSC##name(__MAP(x,__SC_DELOUSE,__VA_ARGS__)); \ 57 } \ 58 static inline long C_SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__)) 59 60 #ifndef compat_user_stack_pointer 61 #define compat_user_stack_pointer() current_user_stack_pointer() 62 #endif 63 #ifndef compat_sigaltstack /* we'll need that for MIPS */ 64 typedef struct compat_sigaltstack { 65 compat_uptr_t ss_sp; 66 int ss_flags; 67 compat_size_t ss_size; 68 } compat_stack_t; 69 #endif 70 71 #define compat_jiffies_to_clock_t(x) \ 72 (((unsigned long)(x) * COMPAT_USER_HZ) / HZ) 73 74 typedef __compat_uid32_t compat_uid_t; 75 typedef __compat_gid32_t compat_gid_t; 76 77 typedef compat_ulong_t compat_aio_context_t; 78 79 struct compat_sel_arg_struct; 80 struct rusage; 81 82 struct compat_itimerspec { 83 struct compat_timespec it_interval; 84 struct compat_timespec it_value; 85 }; 86 87 struct compat_utimbuf { 88 compat_time_t actime; 89 compat_time_t modtime; 90 }; 91 92 struct compat_itimerval { 93 struct compat_timeval it_interval; 94 struct compat_timeval it_value; 95 }; 96 97 struct itimerval; 98 int get_compat_itimerval(struct itimerval *, const struct compat_itimerval __user *); 99 int put_compat_itimerval(struct compat_itimerval __user *, const struct itimerval *); 100 101 struct compat_tms { 102 compat_clock_t tms_utime; 103 compat_clock_t tms_stime; 104 compat_clock_t tms_cutime; 105 compat_clock_t tms_cstime; 106 }; 107 108 struct compat_timex { 109 compat_uint_t modes; 110 compat_long_t offset; 111 compat_long_t freq; 112 compat_long_t maxerror; 113 compat_long_t esterror; 114 compat_int_t status; 115 compat_long_t constant; 116 compat_long_t precision; 117 compat_long_t tolerance; 118 struct compat_timeval time; 119 compat_long_t tick; 120 compat_long_t ppsfreq; 121 compat_long_t jitter; 122 compat_int_t shift; 123 compat_long_t stabil; 124 compat_long_t jitcnt; 125 compat_long_t calcnt; 126 compat_long_t errcnt; 127 compat_long_t stbcnt; 128 compat_int_t tai; 129 130 compat_int_t:32; compat_int_t:32; compat_int_t:32; compat_int_t:32; 131 compat_int_t:32; compat_int_t:32; compat_int_t:32; compat_int_t:32; 132 compat_int_t:32; compat_int_t:32; compat_int_t:32; 133 }; 134 135 struct timex; 136 int compat_get_timex(struct timex *, const struct compat_timex __user *); 137 int compat_put_timex(struct compat_timex __user *, const struct timex *); 138 139 #define _COMPAT_NSIG_WORDS (_COMPAT_NSIG / _COMPAT_NSIG_BPW) 140 141 typedef struct { 142 compat_sigset_word sig[_COMPAT_NSIG_WORDS]; 143 } compat_sigset_t; 144 145 struct compat_sigaction { 146 #ifndef __ARCH_HAS_IRIX_SIGACTION 147 compat_uptr_t sa_handler; 148 compat_ulong_t sa_flags; 149 #else 150 compat_uint_t sa_flags; 151 compat_uptr_t sa_handler; 152 #endif 153 #ifdef __ARCH_HAS_SA_RESTORER 154 compat_uptr_t sa_restorer; 155 #endif 156 compat_sigset_t sa_mask __packed; 157 }; 158 159 /* 160 * These functions operate on 32- or 64-bit specs depending on 161 * COMPAT_USE_64BIT_TIME, hence the void user pointer arguments. 162 */ 163 extern int compat_get_timespec(struct timespec *, const void __user *); 164 extern int compat_put_timespec(const struct timespec *, void __user *); 165 extern int compat_get_timeval(struct timeval *, const void __user *); 166 extern int compat_put_timeval(const struct timeval *, void __user *); 167 extern int compat_get_timespec64(struct timespec64 *, const void __user *); 168 extern int compat_put_timespec64(const struct timespec64 *, void __user *); 169 extern int get_compat_itimerspec64(struct itimerspec64 *its, 170 const struct compat_itimerspec __user *uits); 171 extern int put_compat_itimerspec64(const struct itimerspec64 *its, 172 struct compat_itimerspec __user *uits); 173 174 struct compat_iovec { 175 compat_uptr_t iov_base; 176 compat_size_t iov_len; 177 }; 178 179 struct compat_rlimit { 180 compat_ulong_t rlim_cur; 181 compat_ulong_t rlim_max; 182 }; 183 184 struct compat_rusage { 185 struct compat_timeval ru_utime; 186 struct compat_timeval ru_stime; 187 compat_long_t ru_maxrss; 188 compat_long_t ru_ixrss; 189 compat_long_t ru_idrss; 190 compat_long_t ru_isrss; 191 compat_long_t ru_minflt; 192 compat_long_t ru_majflt; 193 compat_long_t ru_nswap; 194 compat_long_t ru_inblock; 195 compat_long_t ru_oublock; 196 compat_long_t ru_msgsnd; 197 compat_long_t ru_msgrcv; 198 compat_long_t ru_nsignals; 199 compat_long_t ru_nvcsw; 200 compat_long_t ru_nivcsw; 201 }; 202 203 extern int put_compat_rusage(const struct rusage *, 204 struct compat_rusage __user *); 205 206 struct compat_siginfo; 207 208 extern asmlinkage long compat_sys_waitid(int, compat_pid_t, 209 struct compat_siginfo __user *, int, 210 struct compat_rusage __user *); 211 212 struct compat_dirent { 213 u32 d_ino; 214 compat_off_t d_off; 215 u16 d_reclen; 216 char d_name[256]; 217 }; 218 219 struct compat_ustat { 220 compat_daddr_t f_tfree; 221 compat_ino_t f_tinode; 222 char f_fname[6]; 223 char f_fpack[6]; 224 }; 225 226 #define COMPAT_SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE/sizeof(int)) - 3) 227 228 typedef struct compat_sigevent { 229 compat_sigval_t sigev_value; 230 compat_int_t sigev_signo; 231 compat_int_t sigev_notify; 232 union { 233 compat_int_t _pad[COMPAT_SIGEV_PAD_SIZE]; 234 compat_int_t _tid; 235 236 struct { 237 compat_uptr_t _function; 238 compat_uptr_t _attribute; 239 } _sigev_thread; 240 } _sigev_un; 241 } compat_sigevent_t; 242 243 struct compat_ifmap { 244 compat_ulong_t mem_start; 245 compat_ulong_t mem_end; 246 unsigned short base_addr; 247 unsigned char irq; 248 unsigned char dma; 249 unsigned char port; 250 }; 251 252 struct compat_if_settings { 253 unsigned int type; /* Type of physical device or protocol */ 254 unsigned int size; /* Size of the data allocated by the caller */ 255 compat_uptr_t ifs_ifsu; /* union of pointers */ 256 }; 257 258 struct compat_ifreq { 259 union { 260 char ifrn_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 261 } ifr_ifrn; 262 union { 263 struct sockaddr ifru_addr; 264 struct sockaddr ifru_dstaddr; 265 struct sockaddr ifru_broadaddr; 266 struct sockaddr ifru_netmask; 267 struct sockaddr ifru_hwaddr; 268 short ifru_flags; 269 compat_int_t ifru_ivalue; 270 compat_int_t ifru_mtu; 271 struct compat_ifmap ifru_map; 272 char ifru_slave[IFNAMSIZ]; /* Just fits the size */ 273 char ifru_newname[IFNAMSIZ]; 274 compat_caddr_t ifru_data; 275 struct compat_if_settings ifru_settings; 276 } ifr_ifru; 277 }; 278 279 struct compat_ifconf { 280 compat_int_t ifc_len; /* size of buffer */ 281 compat_caddr_t ifcbuf; 282 }; 283 284 struct compat_robust_list { 285 compat_uptr_t next; 286 }; 287 288 struct compat_robust_list_head { 289 struct compat_robust_list list; 290 compat_long_t futex_offset; 291 compat_uptr_t list_op_pending; 292 }; 293 294 #ifdef CONFIG_COMPAT_OLD_SIGACTION 295 struct compat_old_sigaction { 296 compat_uptr_t sa_handler; 297 compat_old_sigset_t sa_mask; 298 compat_ulong_t sa_flags; 299 compat_uptr_t sa_restorer; 300 }; 301 #endif 302 303 struct compat_keyctl_kdf_params { 304 compat_uptr_t hashname; 305 compat_uptr_t otherinfo; 306 __u32 otherinfolen; 307 __u32 __spare[8]; 308 }; 309 310 struct compat_statfs; 311 struct compat_statfs64; 312 struct compat_old_linux_dirent; 313 struct compat_linux_dirent; 314 struct linux_dirent64; 315 struct compat_msghdr; 316 struct compat_mmsghdr; 317 struct compat_sysinfo; 318 struct compat_sysctl_args; 319 struct compat_kexec_segment; 320 struct compat_mq_attr; 321 struct compat_msgbuf; 322 323 extern void compat_exit_robust_list(struct task_struct *curr); 324 325 asmlinkage long 326 compat_sys_set_robust_list(struct compat_robust_list_head __user *head, 327 compat_size_t len); 328 asmlinkage long 329 compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr, 330 compat_size_t __user *len_ptr); 331 332 asmlinkage long compat_sys_ipc(u32, int, int, u32, compat_uptr_t, u32); 333 asmlinkage long compat_sys_shmat(int shmid, compat_uptr_t shmaddr, int shmflg); 334 asmlinkage long compat_sys_semctl(int semid, int semnum, int cmd, int arg); 335 asmlinkage long compat_sys_msgsnd(int msqid, compat_uptr_t msgp, 336 compat_ssize_t msgsz, int msgflg); 337 asmlinkage long compat_sys_msgrcv(int msqid, compat_uptr_t msgp, 338 compat_ssize_t msgsz, compat_long_t msgtyp, int msgflg); 339 long compat_sys_msgctl(int first, int second, void __user *uptr); 340 long compat_sys_shmctl(int first, int second, void __user *uptr); 341 long compat_sys_semtimedop(int semid, struct sembuf __user *tsems, 342 unsigned nsems, const struct compat_timespec __user *timeout); 343 asmlinkage long compat_sys_keyctl(u32 option, 344 u32 arg2, u32 arg3, u32 arg4, u32 arg5); 345 asmlinkage long compat_sys_ustat(unsigned dev, struct compat_ustat __user *u32); 346 347 asmlinkage ssize_t compat_sys_readv(compat_ulong_t fd, 348 const struct compat_iovec __user *vec, compat_ulong_t vlen); 349 asmlinkage ssize_t compat_sys_writev(compat_ulong_t fd, 350 const struct compat_iovec __user *vec, compat_ulong_t vlen); 351 asmlinkage ssize_t compat_sys_preadv(compat_ulong_t fd, 352 const struct compat_iovec __user *vec, 353 compat_ulong_t vlen, u32 pos_low, u32 pos_high); 354 asmlinkage ssize_t compat_sys_pwritev(compat_ulong_t fd, 355 const struct compat_iovec __user *vec, 356 compat_ulong_t vlen, u32 pos_low, u32 pos_high); 357 asmlinkage ssize_t compat_sys_preadv2(compat_ulong_t fd, 358 const struct compat_iovec __user *vec, 359 compat_ulong_t vlen, u32 pos_low, u32 pos_high, rwf_t flags); 360 asmlinkage ssize_t compat_sys_pwritev2(compat_ulong_t fd, 361 const struct compat_iovec __user *vec, 362 compat_ulong_t vlen, u32 pos_low, u32 pos_high, rwf_t flags); 363 364 #ifdef __ARCH_WANT_COMPAT_SYS_PREADV64 365 asmlinkage long compat_sys_preadv64(unsigned long fd, 366 const struct compat_iovec __user *vec, 367 unsigned long vlen, loff_t pos); 368 #endif 369 370 #ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64 371 asmlinkage long compat_sys_pwritev64(unsigned long fd, 372 const struct compat_iovec __user *vec, 373 unsigned long vlen, loff_t pos); 374 #endif 375 376 #ifdef __ARCH_WANT_COMPAT_SYS_PREADV64V2 377 asmlinkage long compat_sys_readv64v2(unsigned long fd, 378 const struct compat_iovec __user *vec, 379 unsigned long vlen, loff_t pos, rwf_t flags); 380 #endif 381 382 #ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64V2 383 asmlinkage long compat_sys_pwritev64v2(unsigned long fd, 384 const struct compat_iovec __user *vec, 385 unsigned long vlen, loff_t pos, rwf_t flags); 386 #endif 387 388 asmlinkage long compat_sys_lseek(unsigned int, compat_off_t, unsigned int); 389 390 asmlinkage long compat_sys_execve(const char __user *filename, const compat_uptr_t __user *argv, 391 const compat_uptr_t __user *envp); 392 asmlinkage long compat_sys_execveat(int dfd, const char __user *filename, 393 const compat_uptr_t __user *argv, 394 const compat_uptr_t __user *envp, int flags); 395 396 asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp, 397 compat_ulong_t __user *outp, compat_ulong_t __user *exp, 398 struct compat_timeval __user *tvp); 399 400 asmlinkage long compat_sys_old_select(struct compat_sel_arg_struct __user *arg); 401 402 asmlinkage long compat_sys_wait4(compat_pid_t pid, 403 compat_uint_t __user *stat_addr, int options, 404 struct compat_rusage __user *ru); 405 406 #define BITS_PER_COMPAT_LONG (8*sizeof(compat_long_t)) 407 408 #define BITS_TO_COMPAT_LONGS(bits) DIV_ROUND_UP(bits, BITS_PER_COMPAT_LONG) 409 410 long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask, 411 unsigned long bitmap_size); 412 long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask, 413 unsigned long bitmap_size); 414 int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user *from); 415 int copy_siginfo_to_user32(struct compat_siginfo __user *to, const siginfo_t *from); 416 int get_compat_sigevent(struct sigevent *event, 417 const struct compat_sigevent __user *u_event); 418 long compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid, compat_pid_t pid, int sig, 419 struct compat_siginfo __user *uinfo); 420 #ifdef CONFIG_COMPAT_OLD_SIGACTION 421 asmlinkage long compat_sys_sigaction(int sig, 422 const struct compat_old_sigaction __user *act, 423 struct compat_old_sigaction __user *oact); 424 #endif 425 426 static inline int compat_timeval_compare(struct compat_timeval *lhs, 427 struct compat_timeval *rhs) 428 { 429 if (lhs->tv_sec < rhs->tv_sec) 430 return -1; 431 if (lhs->tv_sec > rhs->tv_sec) 432 return 1; 433 return lhs->tv_usec - rhs->tv_usec; 434 } 435 436 static inline int compat_timespec_compare(struct compat_timespec *lhs, 437 struct compat_timespec *rhs) 438 { 439 if (lhs->tv_sec < rhs->tv_sec) 440 return -1; 441 if (lhs->tv_sec > rhs->tv_sec) 442 return 1; 443 return lhs->tv_nsec - rhs->tv_nsec; 444 } 445 446 extern int get_compat_itimerspec(struct itimerspec *dst, 447 const struct compat_itimerspec __user *src); 448 extern int put_compat_itimerspec(struct compat_itimerspec __user *dst, 449 const struct itimerspec *src); 450 451 asmlinkage long compat_sys_gettimeofday(struct compat_timeval __user *tv, 452 struct timezone __user *tz); 453 asmlinkage long compat_sys_settimeofday(struct compat_timeval __user *tv, 454 struct timezone __user *tz); 455 456 asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp); 457 458 extern void sigset_from_compat(sigset_t *set, const compat_sigset_t *compat); 459 extern void sigset_to_compat(compat_sigset_t *compat, const sigset_t *set); 460 461 asmlinkage long compat_sys_migrate_pages(compat_pid_t pid, 462 compat_ulong_t maxnode, const compat_ulong_t __user *old_nodes, 463 const compat_ulong_t __user *new_nodes); 464 465 extern int compat_ptrace_request(struct task_struct *child, 466 compat_long_t request, 467 compat_ulong_t addr, compat_ulong_t data); 468 469 extern long compat_arch_ptrace(struct task_struct *child, compat_long_t request, 470 compat_ulong_t addr, compat_ulong_t data); 471 asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid, 472 compat_long_t addr, compat_long_t data); 473 474 asmlinkage long compat_sys_lookup_dcookie(u32, u32, char __user *, compat_size_t); 475 /* 476 * epoll (fs/eventpoll.c) compat bits follow ... 477 */ 478 struct epoll_event; /* fortunately, this one is fixed-layout */ 479 asmlinkage long compat_sys_epoll_pwait(int epfd, 480 struct epoll_event __user *events, 481 int maxevents, int timeout, 482 const compat_sigset_t __user *sigmask, 483 compat_size_t sigsetsize); 484 485 asmlinkage long compat_sys_utime(const char __user *filename, 486 struct compat_utimbuf __user *t); 487 asmlinkage long compat_sys_utimensat(unsigned int dfd, 488 const char __user *filename, 489 struct compat_timespec __user *t, 490 int flags); 491 492 asmlinkage long compat_sys_time(compat_time_t __user *tloc); 493 asmlinkage long compat_sys_stime(compat_time_t __user *tptr); 494 asmlinkage long compat_sys_signalfd(int ufd, 495 const compat_sigset_t __user *sigmask, 496 compat_size_t sigsetsize); 497 asmlinkage long compat_sys_timerfd_settime(int ufd, int flags, 498 const struct compat_itimerspec __user *utmr, 499 struct compat_itimerspec __user *otmr); 500 asmlinkage long compat_sys_timerfd_gettime(int ufd, 501 struct compat_itimerspec __user *otmr); 502 503 asmlinkage long compat_sys_move_pages(pid_t pid, compat_ulong_t nr_pages, 504 __u32 __user *pages, 505 const int __user *nodes, 506 int __user *status, 507 int flags); 508 asmlinkage long compat_sys_futimesat(unsigned int dfd, 509 const char __user *filename, 510 struct compat_timeval __user *t); 511 asmlinkage long compat_sys_utimes(const char __user *filename, 512 struct compat_timeval __user *t); 513 asmlinkage long compat_sys_newstat(const char __user *filename, 514 struct compat_stat __user *statbuf); 515 asmlinkage long compat_sys_newlstat(const char __user *filename, 516 struct compat_stat __user *statbuf); 517 asmlinkage long compat_sys_newfstatat(unsigned int dfd, 518 const char __user *filename, 519 struct compat_stat __user *statbuf, 520 int flag); 521 asmlinkage long compat_sys_newfstat(unsigned int fd, 522 struct compat_stat __user *statbuf); 523 asmlinkage long compat_sys_statfs(const char __user *pathname, 524 struct compat_statfs __user *buf); 525 asmlinkage long compat_sys_fstatfs(unsigned int fd, 526 struct compat_statfs __user *buf); 527 asmlinkage long compat_sys_statfs64(const char __user *pathname, 528 compat_size_t sz, 529 struct compat_statfs64 __user *buf); 530 asmlinkage long compat_sys_fstatfs64(unsigned int fd, compat_size_t sz, 531 struct compat_statfs64 __user *buf); 532 asmlinkage long compat_sys_fcntl64(unsigned int fd, unsigned int cmd, 533 compat_ulong_t arg); 534 asmlinkage long compat_sys_fcntl(unsigned int fd, unsigned int cmd, 535 compat_ulong_t arg); 536 asmlinkage long compat_sys_io_setup(unsigned nr_reqs, u32 __user *ctx32p); 537 asmlinkage long compat_sys_io_getevents(compat_aio_context_t ctx_id, 538 compat_long_t min_nr, 539 compat_long_t nr, 540 struct io_event __user *events, 541 struct compat_timespec __user *timeout); 542 asmlinkage long compat_sys_io_submit(compat_aio_context_t ctx_id, int nr, 543 u32 __user *iocb); 544 asmlinkage long compat_sys_mount(const char __user *dev_name, 545 const char __user *dir_name, 546 const char __user *type, compat_ulong_t flags, 547 const void __user *data); 548 asmlinkage long compat_sys_old_readdir(unsigned int fd, 549 struct compat_old_linux_dirent __user *, 550 unsigned int count); 551 asmlinkage long compat_sys_getdents(unsigned int fd, 552 struct compat_linux_dirent __user *dirent, 553 unsigned int count); 554 asmlinkage long compat_sys_vmsplice(int fd, const struct compat_iovec __user *, 555 unsigned int nr_segs, unsigned int flags); 556 asmlinkage long compat_sys_open(const char __user *filename, int flags, 557 umode_t mode); 558 asmlinkage long compat_sys_openat(int dfd, const char __user *filename, 559 int flags, umode_t mode); 560 asmlinkage long compat_sys_open_by_handle_at(int mountdirfd, 561 struct file_handle __user *handle, 562 int flags); 563 asmlinkage long compat_sys_truncate(const char __user *, compat_off_t); 564 asmlinkage long compat_sys_ftruncate(unsigned int, compat_ulong_t); 565 asmlinkage long compat_sys_pselect6(int n, compat_ulong_t __user *inp, 566 compat_ulong_t __user *outp, 567 compat_ulong_t __user *exp, 568 struct compat_timespec __user *tsp, 569 void __user *sig); 570 asmlinkage long compat_sys_ppoll(struct pollfd __user *ufds, 571 unsigned int nfds, 572 struct compat_timespec __user *tsp, 573 const compat_sigset_t __user *sigmask, 574 compat_size_t sigsetsize); 575 asmlinkage long compat_sys_signalfd4(int ufd, 576 const compat_sigset_t __user *sigmask, 577 compat_size_t sigsetsize, int flags); 578 asmlinkage long compat_sys_get_mempolicy(int __user *policy, 579 compat_ulong_t __user *nmask, 580 compat_ulong_t maxnode, 581 compat_ulong_t addr, 582 compat_ulong_t flags); 583 asmlinkage long compat_sys_set_mempolicy(int mode, compat_ulong_t __user *nmask, 584 compat_ulong_t maxnode); 585 asmlinkage long compat_sys_mbind(compat_ulong_t start, compat_ulong_t len, 586 compat_ulong_t mode, 587 compat_ulong_t __user *nmask, 588 compat_ulong_t maxnode, compat_ulong_t flags); 589 590 asmlinkage long compat_sys_setsockopt(int fd, int level, int optname, 591 char __user *optval, unsigned int optlen); 592 asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg, 593 unsigned flags); 594 asmlinkage long compat_sys_sendmmsg(int fd, struct compat_mmsghdr __user *mmsg, 595 unsigned vlen, unsigned int flags); 596 asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg, 597 unsigned int flags); 598 asmlinkage long compat_sys_recv(int fd, void __user *buf, compat_size_t len, 599 unsigned flags); 600 asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, compat_size_t len, 601 unsigned flags, struct sockaddr __user *addr, 602 int __user *addrlen); 603 asmlinkage long compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg, 604 unsigned vlen, unsigned int flags, 605 struct compat_timespec __user *timeout); 606 asmlinkage long compat_sys_nanosleep(struct compat_timespec __user *rqtp, 607 struct compat_timespec __user *rmtp); 608 asmlinkage long compat_sys_getitimer(int which, 609 struct compat_itimerval __user *it); 610 asmlinkage long compat_sys_setitimer(int which, 611 struct compat_itimerval __user *in, 612 struct compat_itimerval __user *out); 613 asmlinkage long compat_sys_times(struct compat_tms __user *tbuf); 614 asmlinkage long compat_sys_setrlimit(unsigned int resource, 615 struct compat_rlimit __user *rlim); 616 asmlinkage long compat_sys_getrlimit(unsigned int resource, 617 struct compat_rlimit __user *rlim); 618 asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru); 619 asmlinkage long compat_sys_sched_setaffinity(compat_pid_t pid, 620 unsigned int len, 621 compat_ulong_t __user *user_mask_ptr); 622 asmlinkage long compat_sys_sched_getaffinity(compat_pid_t pid, 623 unsigned int len, 624 compat_ulong_t __user *user_mask_ptr); 625 asmlinkage long compat_sys_timer_create(clockid_t which_clock, 626 struct compat_sigevent __user *timer_event_spec, 627 timer_t __user *created_timer_id); 628 asmlinkage long compat_sys_timer_settime(timer_t timer_id, int flags, 629 struct compat_itimerspec __user *new, 630 struct compat_itimerspec __user *old); 631 asmlinkage long compat_sys_timer_gettime(timer_t timer_id, 632 struct compat_itimerspec __user *setting); 633 asmlinkage long compat_sys_clock_settime(clockid_t which_clock, 634 struct compat_timespec __user *tp); 635 asmlinkage long compat_sys_clock_gettime(clockid_t which_clock, 636 struct compat_timespec __user *tp); 637 asmlinkage long compat_sys_clock_adjtime(clockid_t which_clock, 638 struct compat_timex __user *tp); 639 asmlinkage long compat_sys_clock_getres(clockid_t which_clock, 640 struct compat_timespec __user *tp); 641 asmlinkage long compat_sys_clock_nanosleep(clockid_t which_clock, int flags, 642 struct compat_timespec __user *rqtp, 643 struct compat_timespec __user *rmtp); 644 asmlinkage long compat_sys_rt_sigtimedwait(compat_sigset_t __user *uthese, 645 struct compat_siginfo __user *uinfo, 646 struct compat_timespec __user *uts, compat_size_t sigsetsize); 647 asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset, 648 compat_size_t sigsetsize); 649 asmlinkage long compat_sys_rt_sigprocmask(int how, compat_sigset_t __user *set, 650 compat_sigset_t __user *oset, 651 compat_size_t sigsetsize); 652 asmlinkage long compat_sys_rt_sigpending(compat_sigset_t __user *uset, 653 compat_size_t sigsetsize); 654 #ifndef CONFIG_ODD_RT_SIGACTION 655 asmlinkage long compat_sys_rt_sigaction(int, 656 const struct compat_sigaction __user *, 657 struct compat_sigaction __user *, 658 compat_size_t); 659 #endif 660 asmlinkage long compat_sys_rt_sigqueueinfo(compat_pid_t pid, int sig, 661 struct compat_siginfo __user *uinfo); 662 asmlinkage long compat_sys_sysinfo(struct compat_sysinfo __user *info); 663 asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd, 664 compat_ulong_t arg); 665 asmlinkage long compat_sys_futex(u32 __user *uaddr, int op, u32 val, 666 struct compat_timespec __user *utime, u32 __user *uaddr2, 667 u32 val3); 668 asmlinkage long compat_sys_getsockopt(int fd, int level, int optname, 669 char __user *optval, int __user *optlen); 670 asmlinkage long compat_sys_kexec_load(compat_ulong_t entry, 671 compat_ulong_t nr_segments, 672 struct compat_kexec_segment __user *, 673 compat_ulong_t flags); 674 asmlinkage long compat_sys_mq_getsetattr(mqd_t mqdes, 675 const struct compat_mq_attr __user *u_mqstat, 676 struct compat_mq_attr __user *u_omqstat); 677 asmlinkage long compat_sys_mq_notify(mqd_t mqdes, 678 const struct compat_sigevent __user *u_notification); 679 asmlinkage long compat_sys_mq_open(const char __user *u_name, 680 int oflag, compat_mode_t mode, 681 struct compat_mq_attr __user *u_attr); 682 asmlinkage long compat_sys_mq_timedsend(mqd_t mqdes, 683 const char __user *u_msg_ptr, 684 compat_size_t msg_len, unsigned int msg_prio, 685 const struct compat_timespec __user *u_abs_timeout); 686 asmlinkage ssize_t compat_sys_mq_timedreceive(mqd_t mqdes, 687 char __user *u_msg_ptr, 688 compat_size_t msg_len, unsigned int __user *u_msg_prio, 689 const struct compat_timespec __user *u_abs_timeout); 690 asmlinkage long compat_sys_socketcall(int call, u32 __user *args); 691 asmlinkage long compat_sys_sysctl(struct compat_sysctl_args __user *args); 692 693 extern ssize_t compat_rw_copy_check_uvector(int type, 694 const struct compat_iovec __user *uvector, 695 unsigned long nr_segs, 696 unsigned long fast_segs, struct iovec *fast_pointer, 697 struct iovec **ret_pointer); 698 699 extern void __user *compat_alloc_user_space(unsigned long len); 700 701 asmlinkage ssize_t compat_sys_process_vm_readv(compat_pid_t pid, 702 const struct compat_iovec __user *lvec, 703 compat_ulong_t liovcnt, const struct compat_iovec __user *rvec, 704 compat_ulong_t riovcnt, compat_ulong_t flags); 705 asmlinkage ssize_t compat_sys_process_vm_writev(compat_pid_t pid, 706 const struct compat_iovec __user *lvec, 707 compat_ulong_t liovcnt, const struct compat_iovec __user *rvec, 708 compat_ulong_t riovcnt, compat_ulong_t flags); 709 710 asmlinkage long compat_sys_sendfile(int out_fd, int in_fd, 711 compat_off_t __user *offset, compat_size_t count); 712 asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd, 713 compat_loff_t __user *offset, compat_size_t count); 714 asmlinkage long compat_sys_sigaltstack(const compat_stack_t __user *uss_ptr, 715 compat_stack_t __user *uoss_ptr); 716 717 #ifdef __ARCH_WANT_SYS_SIGPENDING 718 asmlinkage long compat_sys_sigpending(compat_old_sigset_t __user *set); 719 #endif 720 721 #ifdef __ARCH_WANT_SYS_SIGPROCMASK 722 asmlinkage long compat_sys_sigprocmask(int how, compat_old_sigset_t __user *nset, 723 compat_old_sigset_t __user *oset); 724 #endif 725 726 int compat_restore_altstack(const compat_stack_t __user *uss); 727 int __compat_save_altstack(compat_stack_t __user *, unsigned long); 728 #define compat_save_altstack_ex(uss, sp) do { \ 729 compat_stack_t __user *__uss = uss; \ 730 struct task_struct *t = current; \ 731 put_user_ex(ptr_to_compat((void __user *)t->sas_ss_sp), &__uss->ss_sp); \ 732 put_user_ex(t->sas_ss_flags, &__uss->ss_flags); \ 733 put_user_ex(t->sas_ss_size, &__uss->ss_size); \ 734 if (t->sas_ss_flags & SS_AUTODISARM) \ 735 sas_ss_reset(t); \ 736 } while (0); 737 738 asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid, 739 struct compat_timespec __user *interval); 740 741 asmlinkage long compat_sys_fanotify_mark(int, unsigned int, __u32, __u32, 742 int, const char __user *); 743 744 asmlinkage long compat_sys_arch_prctl(int option, unsigned long arg2); 745 746 /* 747 * For most but not all architectures, "am I in a compat syscall?" and 748 * "am I a compat task?" are the same question. For architectures on which 749 * they aren't the same question, arch code can override in_compat_syscall. 750 */ 751 752 #ifndef in_compat_syscall 753 static inline bool in_compat_syscall(void) { return is_compat_task(); } 754 #endif 755 756 /** 757 * ns_to_compat_timeval - Compat version of ns_to_timeval 758 * @nsec: the nanoseconds value to be converted 759 * 760 * Returns the compat_timeval representation of the nsec parameter. 761 */ 762 static inline struct compat_timeval ns_to_compat_timeval(s64 nsec) 763 { 764 struct timeval tv; 765 struct compat_timeval ctv; 766 767 tv = ns_to_timeval(nsec); 768 ctv.tv_sec = tv.tv_sec; 769 ctv.tv_usec = tv.tv_usec; 770 771 return ctv; 772 } 773 774 #else /* !CONFIG_COMPAT */ 775 776 #define is_compat_task() (0) 777 static inline bool in_compat_syscall(void) { return false; } 778 779 #endif /* CONFIG_COMPAT */ 780 781 #endif /* _LINUX_COMPAT_H */ 782