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) ((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 compat_tms { 98 compat_clock_t tms_utime; 99 compat_clock_t tms_stime; 100 compat_clock_t tms_cutime; 101 compat_clock_t tms_cstime; 102 }; 103 104 struct compat_timex { 105 compat_uint_t modes; 106 compat_long_t offset; 107 compat_long_t freq; 108 compat_long_t maxerror; 109 compat_long_t esterror; 110 compat_int_t status; 111 compat_long_t constant; 112 compat_long_t precision; 113 compat_long_t tolerance; 114 struct compat_timeval time; 115 compat_long_t tick; 116 compat_long_t ppsfreq; 117 compat_long_t jitter; 118 compat_int_t shift; 119 compat_long_t stabil; 120 compat_long_t jitcnt; 121 compat_long_t calcnt; 122 compat_long_t errcnt; 123 compat_long_t stbcnt; 124 compat_int_t tai; 125 126 compat_int_t:32; compat_int_t:32; compat_int_t:32; compat_int_t:32; 127 compat_int_t:32; compat_int_t:32; compat_int_t:32; compat_int_t:32; 128 compat_int_t:32; compat_int_t:32; compat_int_t:32; 129 }; 130 131 #define _COMPAT_NSIG_WORDS (_COMPAT_NSIG / _COMPAT_NSIG_BPW) 132 133 typedef struct { 134 compat_sigset_word sig[_COMPAT_NSIG_WORDS]; 135 } compat_sigset_t; 136 137 struct compat_sigaction { 138 #ifndef __ARCH_HAS_IRIX_SIGACTION 139 compat_uptr_t sa_handler; 140 compat_ulong_t sa_flags; 141 #else 142 compat_uint_t sa_flags; 143 compat_uptr_t sa_handler; 144 #endif 145 #ifdef __ARCH_HAS_SA_RESTORER 146 compat_uptr_t sa_restorer; 147 #endif 148 compat_sigset_t sa_mask __packed; 149 }; 150 151 /* 152 * These functions operate on 32- or 64-bit specs depending on 153 * COMPAT_USE_64BIT_TIME, hence the void user pointer arguments. 154 */ 155 extern int compat_get_timespec(struct timespec *, const void __user *); 156 extern int compat_put_timespec(const struct timespec *, void __user *); 157 extern int compat_get_timeval(struct timeval *, const void __user *); 158 extern int compat_put_timeval(const struct timeval *, void __user *); 159 160 /* 161 * This function convert a timespec if necessary and returns a *user 162 * space* pointer. If no conversion is necessary, it returns the 163 * initial pointer. NULL is a legitimate argument and will always 164 * output NULL. 165 */ 166 extern int compat_convert_timespec(struct timespec __user **, 167 const void __user *); 168 169 struct compat_iovec { 170 compat_uptr_t iov_base; 171 compat_size_t iov_len; 172 }; 173 174 struct compat_rlimit { 175 compat_ulong_t rlim_cur; 176 compat_ulong_t rlim_max; 177 }; 178 179 struct compat_rusage { 180 struct compat_timeval ru_utime; 181 struct compat_timeval ru_stime; 182 compat_long_t ru_maxrss; 183 compat_long_t ru_ixrss; 184 compat_long_t ru_idrss; 185 compat_long_t ru_isrss; 186 compat_long_t ru_minflt; 187 compat_long_t ru_majflt; 188 compat_long_t ru_nswap; 189 compat_long_t ru_inblock; 190 compat_long_t ru_oublock; 191 compat_long_t ru_msgsnd; 192 compat_long_t ru_msgrcv; 193 compat_long_t ru_nsignals; 194 compat_long_t ru_nvcsw; 195 compat_long_t ru_nivcsw; 196 }; 197 198 extern int put_compat_rusage(const struct rusage *, 199 struct compat_rusage __user *); 200 201 struct compat_siginfo; 202 203 extern asmlinkage long compat_sys_waitid(int, compat_pid_t, 204 struct compat_siginfo __user *, int, 205 struct compat_rusage __user *); 206 207 struct compat_dirent { 208 u32 d_ino; 209 compat_off_t d_off; 210 u16 d_reclen; 211 char d_name[256]; 212 }; 213 214 struct compat_ustat { 215 compat_daddr_t f_tfree; 216 compat_ino_t f_tinode; 217 char f_fname[6]; 218 char f_fpack[6]; 219 }; 220 221 #define COMPAT_SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE/sizeof(int)) - 3) 222 223 typedef struct compat_sigevent { 224 compat_sigval_t sigev_value; 225 compat_int_t sigev_signo; 226 compat_int_t sigev_notify; 227 union { 228 compat_int_t _pad[COMPAT_SIGEV_PAD_SIZE]; 229 compat_int_t _tid; 230 231 struct { 232 compat_uptr_t _function; 233 compat_uptr_t _attribute; 234 } _sigev_thread; 235 } _sigev_un; 236 } compat_sigevent_t; 237 238 struct compat_ifmap { 239 compat_ulong_t mem_start; 240 compat_ulong_t mem_end; 241 unsigned short base_addr; 242 unsigned char irq; 243 unsigned char dma; 244 unsigned char port; 245 }; 246 247 struct compat_if_settings { 248 unsigned int type; /* Type of physical device or protocol */ 249 unsigned int size; /* Size of the data allocated by the caller */ 250 compat_uptr_t ifs_ifsu; /* union of pointers */ 251 }; 252 253 struct compat_ifreq { 254 union { 255 char ifrn_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 256 } ifr_ifrn; 257 union { 258 struct sockaddr ifru_addr; 259 struct sockaddr ifru_dstaddr; 260 struct sockaddr ifru_broadaddr; 261 struct sockaddr ifru_netmask; 262 struct sockaddr ifru_hwaddr; 263 short ifru_flags; 264 compat_int_t ifru_ivalue; 265 compat_int_t ifru_mtu; 266 struct compat_ifmap ifru_map; 267 char ifru_slave[IFNAMSIZ]; /* Just fits the size */ 268 char ifru_newname[IFNAMSIZ]; 269 compat_caddr_t ifru_data; 270 struct compat_if_settings ifru_settings; 271 } ifr_ifru; 272 }; 273 274 struct compat_ifconf { 275 compat_int_t ifc_len; /* size of buffer */ 276 compat_caddr_t ifcbuf; 277 }; 278 279 struct compat_robust_list { 280 compat_uptr_t next; 281 }; 282 283 struct compat_robust_list_head { 284 struct compat_robust_list list; 285 compat_long_t futex_offset; 286 compat_uptr_t list_op_pending; 287 }; 288 289 #ifdef CONFIG_COMPAT_OLD_SIGACTION 290 struct compat_old_sigaction { 291 compat_uptr_t sa_handler; 292 compat_old_sigset_t sa_mask; 293 compat_ulong_t sa_flags; 294 compat_uptr_t sa_restorer; 295 }; 296 #endif 297 298 struct compat_statfs; 299 struct compat_statfs64; 300 struct compat_old_linux_dirent; 301 struct compat_linux_dirent; 302 struct linux_dirent64; 303 struct compat_msghdr; 304 struct compat_mmsghdr; 305 struct compat_sysinfo; 306 struct compat_sysctl_args; 307 struct compat_kexec_segment; 308 struct compat_mq_attr; 309 struct compat_msgbuf; 310 311 extern void compat_exit_robust_list(struct task_struct *curr); 312 313 asmlinkage long 314 compat_sys_set_robust_list(struct compat_robust_list_head __user *head, 315 compat_size_t len); 316 asmlinkage long 317 compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr, 318 compat_size_t __user *len_ptr); 319 320 asmlinkage long compat_sys_ipc(u32, int, int, u32, compat_uptr_t, u32); 321 asmlinkage long compat_sys_shmat(int shmid, compat_uptr_t shmaddr, int shmflg); 322 asmlinkage long compat_sys_semctl(int semid, int semnum, int cmd, int arg); 323 asmlinkage long compat_sys_msgsnd(int msqid, compat_uptr_t msgp, 324 compat_ssize_t msgsz, int msgflg); 325 asmlinkage long compat_sys_msgrcv(int msqid, compat_uptr_t msgp, 326 compat_ssize_t msgsz, compat_long_t msgtyp, int msgflg); 327 long compat_sys_msgctl(int first, int second, void __user *uptr); 328 long compat_sys_shmctl(int first, int second, void __user *uptr); 329 long compat_sys_semtimedop(int semid, struct sembuf __user *tsems, 330 unsigned nsems, const struct compat_timespec __user *timeout); 331 asmlinkage long compat_sys_keyctl(u32 option, 332 u32 arg2, u32 arg3, u32 arg4, u32 arg5); 333 asmlinkage long compat_sys_ustat(unsigned dev, struct compat_ustat __user *u32); 334 335 asmlinkage ssize_t compat_sys_readv(compat_ulong_t fd, 336 const struct compat_iovec __user *vec, compat_ulong_t vlen); 337 asmlinkage ssize_t compat_sys_writev(compat_ulong_t fd, 338 const struct compat_iovec __user *vec, compat_ulong_t vlen); 339 asmlinkage ssize_t compat_sys_preadv(compat_ulong_t fd, 340 const struct compat_iovec __user *vec, 341 compat_ulong_t vlen, u32 pos_low, u32 pos_high); 342 asmlinkage ssize_t compat_sys_pwritev(compat_ulong_t fd, 343 const struct compat_iovec __user *vec, 344 compat_ulong_t vlen, u32 pos_low, u32 pos_high); 345 asmlinkage ssize_t compat_sys_preadv2(compat_ulong_t fd, 346 const struct compat_iovec __user *vec, 347 compat_ulong_t vlen, u32 pos_low, u32 pos_high, int flags); 348 asmlinkage ssize_t compat_sys_pwritev2(compat_ulong_t fd, 349 const struct compat_iovec __user *vec, 350 compat_ulong_t vlen, u32 pos_low, u32 pos_high, int flags); 351 352 #ifdef __ARCH_WANT_COMPAT_SYS_PREADV64 353 asmlinkage long compat_sys_preadv64(unsigned long fd, 354 const struct compat_iovec __user *vec, 355 unsigned long vlen, loff_t pos); 356 #endif 357 358 #ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64 359 asmlinkage long compat_sys_pwritev64(unsigned long fd, 360 const struct compat_iovec __user *vec, 361 unsigned long vlen, loff_t pos); 362 #endif 363 364 asmlinkage long compat_sys_lseek(unsigned int, compat_off_t, unsigned int); 365 366 asmlinkage long compat_sys_execve(const char __user *filename, const compat_uptr_t __user *argv, 367 const compat_uptr_t __user *envp); 368 asmlinkage long compat_sys_execveat(int dfd, const char __user *filename, 369 const compat_uptr_t __user *argv, 370 const compat_uptr_t __user *envp, int flags); 371 372 asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp, 373 compat_ulong_t __user *outp, compat_ulong_t __user *exp, 374 struct compat_timeval __user *tvp); 375 376 asmlinkage long compat_sys_old_select(struct compat_sel_arg_struct __user *arg); 377 378 asmlinkage long compat_sys_wait4(compat_pid_t pid, 379 compat_uint_t __user *stat_addr, int options, 380 struct compat_rusage __user *ru); 381 382 #define BITS_PER_COMPAT_LONG (8*sizeof(compat_long_t)) 383 384 #define BITS_TO_COMPAT_LONGS(bits) \ 385 (((bits)+BITS_PER_COMPAT_LONG-1)/BITS_PER_COMPAT_LONG) 386 387 long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask, 388 unsigned long bitmap_size); 389 long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask, 390 unsigned long bitmap_size); 391 int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user *from); 392 int copy_siginfo_to_user32(struct compat_siginfo __user *to, const siginfo_t *from); 393 int get_compat_sigevent(struct sigevent *event, 394 const struct compat_sigevent __user *u_event); 395 long compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid, compat_pid_t pid, int sig, 396 struct compat_siginfo __user *uinfo); 397 #ifdef CONFIG_COMPAT_OLD_SIGACTION 398 asmlinkage long compat_sys_sigaction(int sig, 399 const struct compat_old_sigaction __user *act, 400 struct compat_old_sigaction __user *oact); 401 #endif 402 403 static inline int compat_timeval_compare(struct compat_timeval *lhs, 404 struct compat_timeval *rhs) 405 { 406 if (lhs->tv_sec < rhs->tv_sec) 407 return -1; 408 if (lhs->tv_sec > rhs->tv_sec) 409 return 1; 410 return lhs->tv_usec - rhs->tv_usec; 411 } 412 413 static inline int compat_timespec_compare(struct compat_timespec *lhs, 414 struct compat_timespec *rhs) 415 { 416 if (lhs->tv_sec < rhs->tv_sec) 417 return -1; 418 if (lhs->tv_sec > rhs->tv_sec) 419 return 1; 420 return lhs->tv_nsec - rhs->tv_nsec; 421 } 422 423 extern int get_compat_itimerspec(struct itimerspec *dst, 424 const struct compat_itimerspec __user *src); 425 extern int put_compat_itimerspec(struct compat_itimerspec __user *dst, 426 const struct itimerspec *src); 427 428 asmlinkage long compat_sys_gettimeofday(struct compat_timeval __user *tv, 429 struct timezone __user *tz); 430 asmlinkage long compat_sys_settimeofday(struct compat_timeval __user *tv, 431 struct timezone __user *tz); 432 433 asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp); 434 435 extern void sigset_from_compat(sigset_t *set, const compat_sigset_t *compat); 436 extern void sigset_to_compat(compat_sigset_t *compat, const sigset_t *set); 437 438 asmlinkage long compat_sys_migrate_pages(compat_pid_t pid, 439 compat_ulong_t maxnode, const compat_ulong_t __user *old_nodes, 440 const compat_ulong_t __user *new_nodes); 441 442 extern int compat_ptrace_request(struct task_struct *child, 443 compat_long_t request, 444 compat_ulong_t addr, compat_ulong_t data); 445 446 extern long compat_arch_ptrace(struct task_struct *child, compat_long_t request, 447 compat_ulong_t addr, compat_ulong_t data); 448 asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid, 449 compat_long_t addr, compat_long_t data); 450 451 asmlinkage long compat_sys_lookup_dcookie(u32, u32, char __user *, compat_size_t); 452 /* 453 * epoll (fs/eventpoll.c) compat bits follow ... 454 */ 455 struct epoll_event; /* fortunately, this one is fixed-layout */ 456 asmlinkage long compat_sys_epoll_pwait(int epfd, 457 struct epoll_event __user *events, 458 int maxevents, int timeout, 459 const compat_sigset_t __user *sigmask, 460 compat_size_t sigsetsize); 461 462 asmlinkage long compat_sys_utime(const char __user *filename, 463 struct compat_utimbuf __user *t); 464 asmlinkage long compat_sys_utimensat(unsigned int dfd, 465 const char __user *filename, 466 struct compat_timespec __user *t, 467 int flags); 468 469 asmlinkage long compat_sys_time(compat_time_t __user *tloc); 470 asmlinkage long compat_sys_stime(compat_time_t __user *tptr); 471 asmlinkage long compat_sys_signalfd(int ufd, 472 const compat_sigset_t __user *sigmask, 473 compat_size_t sigsetsize); 474 asmlinkage long compat_sys_timerfd_settime(int ufd, int flags, 475 const struct compat_itimerspec __user *utmr, 476 struct compat_itimerspec __user *otmr); 477 asmlinkage long compat_sys_timerfd_gettime(int ufd, 478 struct compat_itimerspec __user *otmr); 479 480 asmlinkage long compat_sys_move_pages(pid_t pid, compat_ulong_t nr_pages, 481 __u32 __user *pages, 482 const int __user *nodes, 483 int __user *status, 484 int flags); 485 asmlinkage long compat_sys_futimesat(unsigned int dfd, 486 const char __user *filename, 487 struct compat_timeval __user *t); 488 asmlinkage long compat_sys_utimes(const char __user *filename, 489 struct compat_timeval __user *t); 490 asmlinkage long compat_sys_newstat(const char __user *filename, 491 struct compat_stat __user *statbuf); 492 asmlinkage long compat_sys_newlstat(const char __user *filename, 493 struct compat_stat __user *statbuf); 494 asmlinkage long compat_sys_newfstatat(unsigned int dfd, 495 const char __user *filename, 496 struct compat_stat __user *statbuf, 497 int flag); 498 asmlinkage long compat_sys_newfstat(unsigned int fd, 499 struct compat_stat __user *statbuf); 500 asmlinkage long compat_sys_statfs(const char __user *pathname, 501 struct compat_statfs __user *buf); 502 asmlinkage long compat_sys_fstatfs(unsigned int fd, 503 struct compat_statfs __user *buf); 504 asmlinkage long compat_sys_statfs64(const char __user *pathname, 505 compat_size_t sz, 506 struct compat_statfs64 __user *buf); 507 asmlinkage long compat_sys_fstatfs64(unsigned int fd, compat_size_t sz, 508 struct compat_statfs64 __user *buf); 509 asmlinkage long compat_sys_fcntl64(unsigned int fd, unsigned int cmd, 510 compat_ulong_t arg); 511 asmlinkage long compat_sys_fcntl(unsigned int fd, unsigned int cmd, 512 compat_ulong_t arg); 513 asmlinkage long compat_sys_io_setup(unsigned nr_reqs, u32 __user *ctx32p); 514 asmlinkage long compat_sys_io_getevents(compat_aio_context_t ctx_id, 515 compat_long_t min_nr, 516 compat_long_t nr, 517 struct io_event __user *events, 518 struct compat_timespec __user *timeout); 519 asmlinkage long compat_sys_io_submit(compat_aio_context_t ctx_id, int nr, 520 u32 __user *iocb); 521 asmlinkage long compat_sys_mount(const char __user *dev_name, 522 const char __user *dir_name, 523 const char __user *type, compat_ulong_t flags, 524 const void __user *data); 525 asmlinkage long compat_sys_old_readdir(unsigned int fd, 526 struct compat_old_linux_dirent __user *, 527 unsigned int count); 528 asmlinkage long compat_sys_getdents(unsigned int fd, 529 struct compat_linux_dirent __user *dirent, 530 unsigned int count); 531 #ifdef __ARCH_WANT_COMPAT_SYS_GETDENTS64 532 asmlinkage long compat_sys_getdents64(unsigned int fd, 533 struct linux_dirent64 __user *dirent, 534 unsigned int count); 535 #endif 536 asmlinkage long compat_sys_vmsplice(int fd, const struct compat_iovec __user *, 537 unsigned int nr_segs, unsigned int flags); 538 asmlinkage long compat_sys_open(const char __user *filename, int flags, 539 umode_t mode); 540 asmlinkage long compat_sys_openat(int dfd, const char __user *filename, 541 int flags, umode_t mode); 542 asmlinkage long compat_sys_open_by_handle_at(int mountdirfd, 543 struct file_handle __user *handle, 544 int flags); 545 asmlinkage long compat_sys_truncate(const char __user *, compat_off_t); 546 asmlinkage long compat_sys_ftruncate(unsigned int, compat_ulong_t); 547 asmlinkage long compat_sys_pselect6(int n, compat_ulong_t __user *inp, 548 compat_ulong_t __user *outp, 549 compat_ulong_t __user *exp, 550 struct compat_timespec __user *tsp, 551 void __user *sig); 552 asmlinkage long compat_sys_ppoll(struct pollfd __user *ufds, 553 unsigned int nfds, 554 struct compat_timespec __user *tsp, 555 const compat_sigset_t __user *sigmask, 556 compat_size_t sigsetsize); 557 asmlinkage long compat_sys_signalfd4(int ufd, 558 const compat_sigset_t __user *sigmask, 559 compat_size_t sigsetsize, int flags); 560 asmlinkage long compat_sys_get_mempolicy(int __user *policy, 561 compat_ulong_t __user *nmask, 562 compat_ulong_t maxnode, 563 compat_ulong_t addr, 564 compat_ulong_t flags); 565 asmlinkage long compat_sys_set_mempolicy(int mode, compat_ulong_t __user *nmask, 566 compat_ulong_t maxnode); 567 asmlinkage long compat_sys_mbind(compat_ulong_t start, compat_ulong_t len, 568 compat_ulong_t mode, 569 compat_ulong_t __user *nmask, 570 compat_ulong_t maxnode, compat_ulong_t flags); 571 572 asmlinkage long compat_sys_setsockopt(int fd, int level, int optname, 573 char __user *optval, unsigned int optlen); 574 asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg, 575 unsigned flags); 576 asmlinkage long compat_sys_sendmmsg(int fd, struct compat_mmsghdr __user *mmsg, 577 unsigned vlen, unsigned int flags); 578 asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg, 579 unsigned int flags); 580 asmlinkage long compat_sys_recv(int fd, void __user *buf, compat_size_t len, 581 unsigned flags); 582 asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, compat_size_t len, 583 unsigned flags, struct sockaddr __user *addr, 584 int __user *addrlen); 585 asmlinkage long compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg, 586 unsigned vlen, unsigned int flags, 587 struct compat_timespec __user *timeout); 588 asmlinkage long compat_sys_nanosleep(struct compat_timespec __user *rqtp, 589 struct compat_timespec __user *rmtp); 590 asmlinkage long compat_sys_getitimer(int which, 591 struct compat_itimerval __user *it); 592 asmlinkage long compat_sys_setitimer(int which, 593 struct compat_itimerval __user *in, 594 struct compat_itimerval __user *out); 595 asmlinkage long compat_sys_times(struct compat_tms __user *tbuf); 596 asmlinkage long compat_sys_setrlimit(unsigned int resource, 597 struct compat_rlimit __user *rlim); 598 asmlinkage long compat_sys_getrlimit(unsigned int resource, 599 struct compat_rlimit __user *rlim); 600 asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru); 601 asmlinkage long compat_sys_sched_setaffinity(compat_pid_t pid, 602 unsigned int len, 603 compat_ulong_t __user *user_mask_ptr); 604 asmlinkage long compat_sys_sched_getaffinity(compat_pid_t pid, 605 unsigned int len, 606 compat_ulong_t __user *user_mask_ptr); 607 asmlinkage long compat_sys_timer_create(clockid_t which_clock, 608 struct compat_sigevent __user *timer_event_spec, 609 timer_t __user *created_timer_id); 610 asmlinkage long compat_sys_timer_settime(timer_t timer_id, int flags, 611 struct compat_itimerspec __user *new, 612 struct compat_itimerspec __user *old); 613 asmlinkage long compat_sys_timer_gettime(timer_t timer_id, 614 struct compat_itimerspec __user *setting); 615 asmlinkage long compat_sys_clock_settime(clockid_t which_clock, 616 struct compat_timespec __user *tp); 617 asmlinkage long compat_sys_clock_gettime(clockid_t which_clock, 618 struct compat_timespec __user *tp); 619 asmlinkage long compat_sys_clock_adjtime(clockid_t which_clock, 620 struct compat_timex __user *tp); 621 asmlinkage long compat_sys_clock_getres(clockid_t which_clock, 622 struct compat_timespec __user *tp); 623 asmlinkage long compat_sys_clock_nanosleep(clockid_t which_clock, int flags, 624 struct compat_timespec __user *rqtp, 625 struct compat_timespec __user *rmtp); 626 asmlinkage long compat_sys_rt_sigtimedwait(compat_sigset_t __user *uthese, 627 struct compat_siginfo __user *uinfo, 628 struct compat_timespec __user *uts, compat_size_t sigsetsize); 629 asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset, 630 compat_size_t sigsetsize); 631 asmlinkage long compat_sys_rt_sigprocmask(int how, compat_sigset_t __user *set, 632 compat_sigset_t __user *oset, 633 compat_size_t sigsetsize); 634 asmlinkage long compat_sys_rt_sigpending(compat_sigset_t __user *uset, 635 compat_size_t sigsetsize); 636 #ifndef CONFIG_ODD_RT_SIGACTION 637 asmlinkage long compat_sys_rt_sigaction(int, 638 const struct compat_sigaction __user *, 639 struct compat_sigaction __user *, 640 compat_size_t); 641 #endif 642 asmlinkage long compat_sys_rt_sigqueueinfo(compat_pid_t pid, int sig, 643 struct compat_siginfo __user *uinfo); 644 asmlinkage long compat_sys_sysinfo(struct compat_sysinfo __user *info); 645 asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd, 646 compat_ulong_t arg); 647 asmlinkage long compat_sys_futex(u32 __user *uaddr, int op, u32 val, 648 struct compat_timespec __user *utime, u32 __user *uaddr2, 649 u32 val3); 650 asmlinkage long compat_sys_getsockopt(int fd, int level, int optname, 651 char __user *optval, int __user *optlen); 652 asmlinkage long compat_sys_kexec_load(compat_ulong_t entry, 653 compat_ulong_t nr_segments, 654 struct compat_kexec_segment __user *, 655 compat_ulong_t flags); 656 asmlinkage long compat_sys_mq_getsetattr(mqd_t mqdes, 657 const struct compat_mq_attr __user *u_mqstat, 658 struct compat_mq_attr __user *u_omqstat); 659 asmlinkage long compat_sys_mq_notify(mqd_t mqdes, 660 const struct compat_sigevent __user *u_notification); 661 asmlinkage long compat_sys_mq_open(const char __user *u_name, 662 int oflag, compat_mode_t mode, 663 struct compat_mq_attr __user *u_attr); 664 asmlinkage long compat_sys_mq_timedsend(mqd_t mqdes, 665 const char __user *u_msg_ptr, 666 compat_size_t msg_len, unsigned int msg_prio, 667 const struct compat_timespec __user *u_abs_timeout); 668 asmlinkage ssize_t compat_sys_mq_timedreceive(mqd_t mqdes, 669 char __user *u_msg_ptr, 670 compat_size_t msg_len, unsigned int __user *u_msg_prio, 671 const struct compat_timespec __user *u_abs_timeout); 672 asmlinkage long compat_sys_socketcall(int call, u32 __user *args); 673 asmlinkage long compat_sys_sysctl(struct compat_sysctl_args __user *args); 674 675 extern ssize_t compat_rw_copy_check_uvector(int type, 676 const struct compat_iovec __user *uvector, 677 unsigned long nr_segs, 678 unsigned long fast_segs, struct iovec *fast_pointer, 679 struct iovec **ret_pointer); 680 681 extern void __user *compat_alloc_user_space(unsigned long len); 682 683 asmlinkage ssize_t compat_sys_process_vm_readv(compat_pid_t pid, 684 const struct compat_iovec __user *lvec, 685 compat_ulong_t liovcnt, const struct compat_iovec __user *rvec, 686 compat_ulong_t riovcnt, compat_ulong_t flags); 687 asmlinkage ssize_t compat_sys_process_vm_writev(compat_pid_t pid, 688 const struct compat_iovec __user *lvec, 689 compat_ulong_t liovcnt, const struct compat_iovec __user *rvec, 690 compat_ulong_t riovcnt, compat_ulong_t flags); 691 692 asmlinkage long compat_sys_sendfile(int out_fd, int in_fd, 693 compat_off_t __user *offset, compat_size_t count); 694 asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd, 695 compat_loff_t __user *offset, compat_size_t count); 696 asmlinkage long compat_sys_sigaltstack(const compat_stack_t __user *uss_ptr, 697 compat_stack_t __user *uoss_ptr); 698 699 #ifdef __ARCH_WANT_SYS_SIGPENDING 700 asmlinkage long compat_sys_sigpending(compat_old_sigset_t __user *set); 701 #endif 702 703 #ifdef __ARCH_WANT_SYS_SIGPROCMASK 704 asmlinkage long compat_sys_sigprocmask(int how, compat_old_sigset_t __user *nset, 705 compat_old_sigset_t __user *oset); 706 #endif 707 708 int compat_restore_altstack(const compat_stack_t __user *uss); 709 int __compat_save_altstack(compat_stack_t __user *, unsigned long); 710 #define compat_save_altstack_ex(uss, sp) do { \ 711 compat_stack_t __user *__uss = uss; \ 712 struct task_struct *t = current; \ 713 put_user_ex(ptr_to_compat((void __user *)t->sas_ss_sp), &__uss->ss_sp); \ 714 put_user_ex(sas_ss_flags(sp), &__uss->ss_flags); \ 715 put_user_ex(t->sas_ss_size, &__uss->ss_size); \ 716 } while (0); 717 718 asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid, 719 struct compat_timespec __user *interval); 720 721 asmlinkage long compat_sys_fanotify_mark(int, unsigned int, __u32, __u32, 722 int, const char __user *); 723 724 /* 725 * For most but not all architectures, "am I in a compat syscall?" and 726 * "am I a compat task?" are the same question. For architectures on which 727 * they aren't the same question, arch code can override in_compat_syscall. 728 */ 729 730 #ifndef in_compat_syscall 731 static inline bool in_compat_syscall(void) { return is_compat_task(); } 732 #endif 733 734 #else 735 736 #define is_compat_task() (0) 737 static inline bool in_compat_syscall(void) { return false; } 738 739 #endif /* CONFIG_COMPAT */ 740 741 #endif /* _LINUX_COMPAT_H */ 742