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_keyctl_kdf_params { 299 compat_uptr_t hashname; 300 compat_uptr_t otherinfo; 301 __u32 otherinfolen; 302 __u32 __spare[8]; 303 }; 304 305 struct compat_statfs; 306 struct compat_statfs64; 307 struct compat_old_linux_dirent; 308 struct compat_linux_dirent; 309 struct linux_dirent64; 310 struct compat_msghdr; 311 struct compat_mmsghdr; 312 struct compat_sysinfo; 313 struct compat_sysctl_args; 314 struct compat_kexec_segment; 315 struct compat_mq_attr; 316 struct compat_msgbuf; 317 318 extern void compat_exit_robust_list(struct task_struct *curr); 319 320 asmlinkage long 321 compat_sys_set_robust_list(struct compat_robust_list_head __user *head, 322 compat_size_t len); 323 asmlinkage long 324 compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr, 325 compat_size_t __user *len_ptr); 326 327 asmlinkage long compat_sys_ipc(u32, int, int, u32, compat_uptr_t, u32); 328 asmlinkage long compat_sys_shmat(int shmid, compat_uptr_t shmaddr, int shmflg); 329 asmlinkage long compat_sys_semctl(int semid, int semnum, int cmd, int arg); 330 asmlinkage long compat_sys_msgsnd(int msqid, compat_uptr_t msgp, 331 compat_ssize_t msgsz, int msgflg); 332 asmlinkage long compat_sys_msgrcv(int msqid, compat_uptr_t msgp, 333 compat_ssize_t msgsz, compat_long_t msgtyp, int msgflg); 334 long compat_sys_msgctl(int first, int second, void __user *uptr); 335 long compat_sys_shmctl(int first, int second, void __user *uptr); 336 long compat_sys_semtimedop(int semid, struct sembuf __user *tsems, 337 unsigned nsems, const struct compat_timespec __user *timeout); 338 asmlinkage long compat_sys_keyctl(u32 option, 339 u32 arg2, u32 arg3, u32 arg4, u32 arg5); 340 asmlinkage long compat_sys_ustat(unsigned dev, struct compat_ustat __user *u32); 341 342 asmlinkage ssize_t compat_sys_readv(compat_ulong_t fd, 343 const struct compat_iovec __user *vec, compat_ulong_t vlen); 344 asmlinkage ssize_t compat_sys_writev(compat_ulong_t fd, 345 const struct compat_iovec __user *vec, compat_ulong_t vlen); 346 asmlinkage ssize_t compat_sys_preadv(compat_ulong_t fd, 347 const struct compat_iovec __user *vec, 348 compat_ulong_t vlen, u32 pos_low, u32 pos_high); 349 asmlinkage ssize_t compat_sys_pwritev(compat_ulong_t fd, 350 const struct compat_iovec __user *vec, 351 compat_ulong_t vlen, u32 pos_low, u32 pos_high); 352 asmlinkage ssize_t compat_sys_preadv2(compat_ulong_t fd, 353 const struct compat_iovec __user *vec, 354 compat_ulong_t vlen, u32 pos_low, u32 pos_high, int flags); 355 asmlinkage ssize_t compat_sys_pwritev2(compat_ulong_t fd, 356 const struct compat_iovec __user *vec, 357 compat_ulong_t vlen, u32 pos_low, u32 pos_high, int flags); 358 359 #ifdef __ARCH_WANT_COMPAT_SYS_PREADV64 360 asmlinkage long compat_sys_preadv64(unsigned long fd, 361 const struct compat_iovec __user *vec, 362 unsigned long vlen, loff_t pos); 363 #endif 364 365 #ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64 366 asmlinkage long compat_sys_pwritev64(unsigned long fd, 367 const struct compat_iovec __user *vec, 368 unsigned long vlen, loff_t pos); 369 #endif 370 371 asmlinkage long compat_sys_lseek(unsigned int, compat_off_t, unsigned int); 372 373 asmlinkage long compat_sys_execve(const char __user *filename, const compat_uptr_t __user *argv, 374 const compat_uptr_t __user *envp); 375 asmlinkage long compat_sys_execveat(int dfd, const char __user *filename, 376 const compat_uptr_t __user *argv, 377 const compat_uptr_t __user *envp, int flags); 378 379 asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp, 380 compat_ulong_t __user *outp, compat_ulong_t __user *exp, 381 struct compat_timeval __user *tvp); 382 383 asmlinkage long compat_sys_old_select(struct compat_sel_arg_struct __user *arg); 384 385 asmlinkage long compat_sys_wait4(compat_pid_t pid, 386 compat_uint_t __user *stat_addr, int options, 387 struct compat_rusage __user *ru); 388 389 #define BITS_PER_COMPAT_LONG (8*sizeof(compat_long_t)) 390 391 #define BITS_TO_COMPAT_LONGS(bits) \ 392 (((bits)+BITS_PER_COMPAT_LONG-1)/BITS_PER_COMPAT_LONG) 393 394 long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask, 395 unsigned long bitmap_size); 396 long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask, 397 unsigned long bitmap_size); 398 int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user *from); 399 int copy_siginfo_to_user32(struct compat_siginfo __user *to, const siginfo_t *from); 400 int get_compat_sigevent(struct sigevent *event, 401 const struct compat_sigevent __user *u_event); 402 long compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid, compat_pid_t pid, int sig, 403 struct compat_siginfo __user *uinfo); 404 #ifdef CONFIG_COMPAT_OLD_SIGACTION 405 asmlinkage long compat_sys_sigaction(int sig, 406 const struct compat_old_sigaction __user *act, 407 struct compat_old_sigaction __user *oact); 408 #endif 409 410 static inline int compat_timeval_compare(struct compat_timeval *lhs, 411 struct compat_timeval *rhs) 412 { 413 if (lhs->tv_sec < rhs->tv_sec) 414 return -1; 415 if (lhs->tv_sec > rhs->tv_sec) 416 return 1; 417 return lhs->tv_usec - rhs->tv_usec; 418 } 419 420 static inline int compat_timespec_compare(struct compat_timespec *lhs, 421 struct compat_timespec *rhs) 422 { 423 if (lhs->tv_sec < rhs->tv_sec) 424 return -1; 425 if (lhs->tv_sec > rhs->tv_sec) 426 return 1; 427 return lhs->tv_nsec - rhs->tv_nsec; 428 } 429 430 extern int get_compat_itimerspec(struct itimerspec *dst, 431 const struct compat_itimerspec __user *src); 432 extern int put_compat_itimerspec(struct compat_itimerspec __user *dst, 433 const struct itimerspec *src); 434 435 asmlinkage long compat_sys_gettimeofday(struct compat_timeval __user *tv, 436 struct timezone __user *tz); 437 asmlinkage long compat_sys_settimeofday(struct compat_timeval __user *tv, 438 struct timezone __user *tz); 439 440 asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp); 441 442 extern void sigset_from_compat(sigset_t *set, const compat_sigset_t *compat); 443 extern void sigset_to_compat(compat_sigset_t *compat, const sigset_t *set); 444 445 asmlinkage long compat_sys_migrate_pages(compat_pid_t pid, 446 compat_ulong_t maxnode, const compat_ulong_t __user *old_nodes, 447 const compat_ulong_t __user *new_nodes); 448 449 extern int compat_ptrace_request(struct task_struct *child, 450 compat_long_t request, 451 compat_ulong_t addr, compat_ulong_t data); 452 453 extern long compat_arch_ptrace(struct task_struct *child, compat_long_t request, 454 compat_ulong_t addr, compat_ulong_t data); 455 asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid, 456 compat_long_t addr, compat_long_t data); 457 458 asmlinkage long compat_sys_lookup_dcookie(u32, u32, char __user *, compat_size_t); 459 /* 460 * epoll (fs/eventpoll.c) compat bits follow ... 461 */ 462 struct epoll_event; /* fortunately, this one is fixed-layout */ 463 asmlinkage long compat_sys_epoll_pwait(int epfd, 464 struct epoll_event __user *events, 465 int maxevents, int timeout, 466 const compat_sigset_t __user *sigmask, 467 compat_size_t sigsetsize); 468 469 asmlinkage long compat_sys_utime(const char __user *filename, 470 struct compat_utimbuf __user *t); 471 asmlinkage long compat_sys_utimensat(unsigned int dfd, 472 const char __user *filename, 473 struct compat_timespec __user *t, 474 int flags); 475 476 asmlinkage long compat_sys_time(compat_time_t __user *tloc); 477 asmlinkage long compat_sys_stime(compat_time_t __user *tptr); 478 asmlinkage long compat_sys_signalfd(int ufd, 479 const compat_sigset_t __user *sigmask, 480 compat_size_t sigsetsize); 481 asmlinkage long compat_sys_timerfd_settime(int ufd, int flags, 482 const struct compat_itimerspec __user *utmr, 483 struct compat_itimerspec __user *otmr); 484 asmlinkage long compat_sys_timerfd_gettime(int ufd, 485 struct compat_itimerspec __user *otmr); 486 487 asmlinkage long compat_sys_move_pages(pid_t pid, compat_ulong_t nr_pages, 488 __u32 __user *pages, 489 const int __user *nodes, 490 int __user *status, 491 int flags); 492 asmlinkage long compat_sys_futimesat(unsigned int dfd, 493 const char __user *filename, 494 struct compat_timeval __user *t); 495 asmlinkage long compat_sys_utimes(const char __user *filename, 496 struct compat_timeval __user *t); 497 asmlinkage long compat_sys_newstat(const char __user *filename, 498 struct compat_stat __user *statbuf); 499 asmlinkage long compat_sys_newlstat(const char __user *filename, 500 struct compat_stat __user *statbuf); 501 asmlinkage long compat_sys_newfstatat(unsigned int dfd, 502 const char __user *filename, 503 struct compat_stat __user *statbuf, 504 int flag); 505 asmlinkage long compat_sys_newfstat(unsigned int fd, 506 struct compat_stat __user *statbuf); 507 asmlinkage long compat_sys_statfs(const char __user *pathname, 508 struct compat_statfs __user *buf); 509 asmlinkage long compat_sys_fstatfs(unsigned int fd, 510 struct compat_statfs __user *buf); 511 asmlinkage long compat_sys_statfs64(const char __user *pathname, 512 compat_size_t sz, 513 struct compat_statfs64 __user *buf); 514 asmlinkage long compat_sys_fstatfs64(unsigned int fd, compat_size_t sz, 515 struct compat_statfs64 __user *buf); 516 asmlinkage long compat_sys_fcntl64(unsigned int fd, unsigned int cmd, 517 compat_ulong_t arg); 518 asmlinkage long compat_sys_fcntl(unsigned int fd, unsigned int cmd, 519 compat_ulong_t arg); 520 asmlinkage long compat_sys_io_setup(unsigned nr_reqs, u32 __user *ctx32p); 521 asmlinkage long compat_sys_io_getevents(compat_aio_context_t ctx_id, 522 compat_long_t min_nr, 523 compat_long_t nr, 524 struct io_event __user *events, 525 struct compat_timespec __user *timeout); 526 asmlinkage long compat_sys_io_submit(compat_aio_context_t ctx_id, int nr, 527 u32 __user *iocb); 528 asmlinkage long compat_sys_mount(const char __user *dev_name, 529 const char __user *dir_name, 530 const char __user *type, compat_ulong_t flags, 531 const void __user *data); 532 asmlinkage long compat_sys_old_readdir(unsigned int fd, 533 struct compat_old_linux_dirent __user *, 534 unsigned int count); 535 asmlinkage long compat_sys_getdents(unsigned int fd, 536 struct compat_linux_dirent __user *dirent, 537 unsigned int count); 538 asmlinkage long compat_sys_vmsplice(int fd, const struct compat_iovec __user *, 539 unsigned int nr_segs, unsigned int flags); 540 asmlinkage long compat_sys_open(const char __user *filename, int flags, 541 umode_t mode); 542 asmlinkage long compat_sys_openat(int dfd, const char __user *filename, 543 int flags, umode_t mode); 544 asmlinkage long compat_sys_open_by_handle_at(int mountdirfd, 545 struct file_handle __user *handle, 546 int flags); 547 asmlinkage long compat_sys_truncate(const char __user *, compat_off_t); 548 asmlinkage long compat_sys_ftruncate(unsigned int, compat_ulong_t); 549 asmlinkage long compat_sys_pselect6(int n, compat_ulong_t __user *inp, 550 compat_ulong_t __user *outp, 551 compat_ulong_t __user *exp, 552 struct compat_timespec __user *tsp, 553 void __user *sig); 554 asmlinkage long compat_sys_ppoll(struct pollfd __user *ufds, 555 unsigned int nfds, 556 struct compat_timespec __user *tsp, 557 const compat_sigset_t __user *sigmask, 558 compat_size_t sigsetsize); 559 asmlinkage long compat_sys_signalfd4(int ufd, 560 const compat_sigset_t __user *sigmask, 561 compat_size_t sigsetsize, int flags); 562 asmlinkage long compat_sys_get_mempolicy(int __user *policy, 563 compat_ulong_t __user *nmask, 564 compat_ulong_t maxnode, 565 compat_ulong_t addr, 566 compat_ulong_t flags); 567 asmlinkage long compat_sys_set_mempolicy(int mode, compat_ulong_t __user *nmask, 568 compat_ulong_t maxnode); 569 asmlinkage long compat_sys_mbind(compat_ulong_t start, compat_ulong_t len, 570 compat_ulong_t mode, 571 compat_ulong_t __user *nmask, 572 compat_ulong_t maxnode, compat_ulong_t flags); 573 574 asmlinkage long compat_sys_setsockopt(int fd, int level, int optname, 575 char __user *optval, unsigned int optlen); 576 asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg, 577 unsigned flags); 578 asmlinkage long compat_sys_sendmmsg(int fd, struct compat_mmsghdr __user *mmsg, 579 unsigned vlen, unsigned int flags); 580 asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg, 581 unsigned int flags); 582 asmlinkage long compat_sys_recv(int fd, void __user *buf, compat_size_t len, 583 unsigned flags); 584 asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, compat_size_t len, 585 unsigned flags, struct sockaddr __user *addr, 586 int __user *addrlen); 587 asmlinkage long compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg, 588 unsigned vlen, unsigned int flags, 589 struct compat_timespec __user *timeout); 590 asmlinkage long compat_sys_nanosleep(struct compat_timespec __user *rqtp, 591 struct compat_timespec __user *rmtp); 592 asmlinkage long compat_sys_getitimer(int which, 593 struct compat_itimerval __user *it); 594 asmlinkage long compat_sys_setitimer(int which, 595 struct compat_itimerval __user *in, 596 struct compat_itimerval __user *out); 597 asmlinkage long compat_sys_times(struct compat_tms __user *tbuf); 598 asmlinkage long compat_sys_setrlimit(unsigned int resource, 599 struct compat_rlimit __user *rlim); 600 asmlinkage long compat_sys_getrlimit(unsigned int resource, 601 struct compat_rlimit __user *rlim); 602 asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru); 603 asmlinkage long compat_sys_sched_setaffinity(compat_pid_t pid, 604 unsigned int len, 605 compat_ulong_t __user *user_mask_ptr); 606 asmlinkage long compat_sys_sched_getaffinity(compat_pid_t pid, 607 unsigned int len, 608 compat_ulong_t __user *user_mask_ptr); 609 asmlinkage long compat_sys_timer_create(clockid_t which_clock, 610 struct compat_sigevent __user *timer_event_spec, 611 timer_t __user *created_timer_id); 612 asmlinkage long compat_sys_timer_settime(timer_t timer_id, int flags, 613 struct compat_itimerspec __user *new, 614 struct compat_itimerspec __user *old); 615 asmlinkage long compat_sys_timer_gettime(timer_t timer_id, 616 struct compat_itimerspec __user *setting); 617 asmlinkage long compat_sys_clock_settime(clockid_t which_clock, 618 struct compat_timespec __user *tp); 619 asmlinkage long compat_sys_clock_gettime(clockid_t which_clock, 620 struct compat_timespec __user *tp); 621 asmlinkage long compat_sys_clock_adjtime(clockid_t which_clock, 622 struct compat_timex __user *tp); 623 asmlinkage long compat_sys_clock_getres(clockid_t which_clock, 624 struct compat_timespec __user *tp); 625 asmlinkage long compat_sys_clock_nanosleep(clockid_t which_clock, int flags, 626 struct compat_timespec __user *rqtp, 627 struct compat_timespec __user *rmtp); 628 asmlinkage long compat_sys_rt_sigtimedwait(compat_sigset_t __user *uthese, 629 struct compat_siginfo __user *uinfo, 630 struct compat_timespec __user *uts, compat_size_t sigsetsize); 631 asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset, 632 compat_size_t sigsetsize); 633 asmlinkage long compat_sys_rt_sigprocmask(int how, compat_sigset_t __user *set, 634 compat_sigset_t __user *oset, 635 compat_size_t sigsetsize); 636 asmlinkage long compat_sys_rt_sigpending(compat_sigset_t __user *uset, 637 compat_size_t sigsetsize); 638 #ifndef CONFIG_ODD_RT_SIGACTION 639 asmlinkage long compat_sys_rt_sigaction(int, 640 const struct compat_sigaction __user *, 641 struct compat_sigaction __user *, 642 compat_size_t); 643 #endif 644 asmlinkage long compat_sys_rt_sigqueueinfo(compat_pid_t pid, int sig, 645 struct compat_siginfo __user *uinfo); 646 asmlinkage long compat_sys_sysinfo(struct compat_sysinfo __user *info); 647 asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd, 648 compat_ulong_t arg); 649 asmlinkage long compat_sys_futex(u32 __user *uaddr, int op, u32 val, 650 struct compat_timespec __user *utime, u32 __user *uaddr2, 651 u32 val3); 652 asmlinkage long compat_sys_getsockopt(int fd, int level, int optname, 653 char __user *optval, int __user *optlen); 654 asmlinkage long compat_sys_kexec_load(compat_ulong_t entry, 655 compat_ulong_t nr_segments, 656 struct compat_kexec_segment __user *, 657 compat_ulong_t flags); 658 asmlinkage long compat_sys_mq_getsetattr(mqd_t mqdes, 659 const struct compat_mq_attr __user *u_mqstat, 660 struct compat_mq_attr __user *u_omqstat); 661 asmlinkage long compat_sys_mq_notify(mqd_t mqdes, 662 const struct compat_sigevent __user *u_notification); 663 asmlinkage long compat_sys_mq_open(const char __user *u_name, 664 int oflag, compat_mode_t mode, 665 struct compat_mq_attr __user *u_attr); 666 asmlinkage long compat_sys_mq_timedsend(mqd_t mqdes, 667 const char __user *u_msg_ptr, 668 compat_size_t msg_len, unsigned int msg_prio, 669 const struct compat_timespec __user *u_abs_timeout); 670 asmlinkage ssize_t compat_sys_mq_timedreceive(mqd_t mqdes, 671 char __user *u_msg_ptr, 672 compat_size_t msg_len, unsigned int __user *u_msg_prio, 673 const struct compat_timespec __user *u_abs_timeout); 674 asmlinkage long compat_sys_socketcall(int call, u32 __user *args); 675 asmlinkage long compat_sys_sysctl(struct compat_sysctl_args __user *args); 676 677 extern ssize_t compat_rw_copy_check_uvector(int type, 678 const struct compat_iovec __user *uvector, 679 unsigned long nr_segs, 680 unsigned long fast_segs, struct iovec *fast_pointer, 681 struct iovec **ret_pointer); 682 683 extern void __user *compat_alloc_user_space(unsigned long len); 684 685 asmlinkage ssize_t compat_sys_process_vm_readv(compat_pid_t pid, 686 const struct compat_iovec __user *lvec, 687 compat_ulong_t liovcnt, const struct compat_iovec __user *rvec, 688 compat_ulong_t riovcnt, compat_ulong_t flags); 689 asmlinkage ssize_t compat_sys_process_vm_writev(compat_pid_t pid, 690 const struct compat_iovec __user *lvec, 691 compat_ulong_t liovcnt, const struct compat_iovec __user *rvec, 692 compat_ulong_t riovcnt, compat_ulong_t flags); 693 694 asmlinkage long compat_sys_sendfile(int out_fd, int in_fd, 695 compat_off_t __user *offset, compat_size_t count); 696 asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd, 697 compat_loff_t __user *offset, compat_size_t count); 698 asmlinkage long compat_sys_sigaltstack(const compat_stack_t __user *uss_ptr, 699 compat_stack_t __user *uoss_ptr); 700 701 #ifdef __ARCH_WANT_SYS_SIGPENDING 702 asmlinkage long compat_sys_sigpending(compat_old_sigset_t __user *set); 703 #endif 704 705 #ifdef __ARCH_WANT_SYS_SIGPROCMASK 706 asmlinkage long compat_sys_sigprocmask(int how, compat_old_sigset_t __user *nset, 707 compat_old_sigset_t __user *oset); 708 #endif 709 710 int compat_restore_altstack(const compat_stack_t __user *uss); 711 int __compat_save_altstack(compat_stack_t __user *, unsigned long); 712 #define compat_save_altstack_ex(uss, sp) do { \ 713 compat_stack_t __user *__uss = uss; \ 714 struct task_struct *t = current; \ 715 put_user_ex(ptr_to_compat((void __user *)t->sas_ss_sp), &__uss->ss_sp); \ 716 put_user_ex(t->sas_ss_flags, &__uss->ss_flags); \ 717 put_user_ex(t->sas_ss_size, &__uss->ss_size); \ 718 if (t->sas_ss_flags & SS_AUTODISARM) \ 719 sas_ss_reset(t); \ 720 } while (0); 721 722 asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid, 723 struct compat_timespec __user *interval); 724 725 asmlinkage long compat_sys_fanotify_mark(int, unsigned int, __u32, __u32, 726 int, const char __user *); 727 728 asmlinkage long compat_sys_arch_prctl(int option, unsigned long arg2); 729 730 /* 731 * For most but not all architectures, "am I in a compat syscall?" and 732 * "am I a compat task?" are the same question. For architectures on which 733 * they aren't the same question, arch code can override in_compat_syscall. 734 */ 735 736 #ifndef in_compat_syscall 737 static inline bool in_compat_syscall(void) { return is_compat_task(); } 738 #endif 739 740 /** 741 * ns_to_compat_timeval - Compat version of ns_to_timeval 742 * @nsec: the nanoseconds value to be converted 743 * 744 * Returns the compat_timeval representation of the nsec parameter. 745 */ 746 static inline struct compat_timeval ns_to_compat_timeval(s64 nsec) 747 { 748 struct timeval tv; 749 struct compat_timeval ctv; 750 751 tv = ns_to_timeval(nsec); 752 ctv.tv_sec = tv.tv_sec; 753 ctv.tv_usec = tv.tv_usec; 754 755 return ctv; 756 } 757 758 #else /* !CONFIG_COMPAT */ 759 760 #define is_compat_task() (0) 761 static inline bool in_compat_syscall(void) { return false; } 762 763 #endif /* CONFIG_COMPAT */ 764 765 #endif /* _LINUX_COMPAT_H */ 766