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 __printf(1, 2) int compat_printk(const char *fmt, ...); 436 extern void sigset_from_compat(sigset_t *set, const compat_sigset_t *compat); 437 extern void sigset_to_compat(compat_sigset_t *compat, const sigset_t *set); 438 439 asmlinkage long compat_sys_migrate_pages(compat_pid_t pid, 440 compat_ulong_t maxnode, const compat_ulong_t __user *old_nodes, 441 const compat_ulong_t __user *new_nodes); 442 443 extern int compat_ptrace_request(struct task_struct *child, 444 compat_long_t request, 445 compat_ulong_t addr, compat_ulong_t data); 446 447 extern long compat_arch_ptrace(struct task_struct *child, compat_long_t request, 448 compat_ulong_t addr, compat_ulong_t data); 449 asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid, 450 compat_long_t addr, compat_long_t data); 451 452 asmlinkage long compat_sys_lookup_dcookie(u32, u32, char __user *, compat_size_t); 453 /* 454 * epoll (fs/eventpoll.c) compat bits follow ... 455 */ 456 struct epoll_event; /* fortunately, this one is fixed-layout */ 457 asmlinkage long compat_sys_epoll_pwait(int epfd, 458 struct epoll_event __user *events, 459 int maxevents, int timeout, 460 const compat_sigset_t __user *sigmask, 461 compat_size_t sigsetsize); 462 463 asmlinkage long compat_sys_utime(const char __user *filename, 464 struct compat_utimbuf __user *t); 465 asmlinkage long compat_sys_utimensat(unsigned int dfd, 466 const char __user *filename, 467 struct compat_timespec __user *t, 468 int flags); 469 470 asmlinkage long compat_sys_time(compat_time_t __user *tloc); 471 asmlinkage long compat_sys_stime(compat_time_t __user *tptr); 472 asmlinkage long compat_sys_signalfd(int ufd, 473 const compat_sigset_t __user *sigmask, 474 compat_size_t sigsetsize); 475 asmlinkage long compat_sys_timerfd_settime(int ufd, int flags, 476 const struct compat_itimerspec __user *utmr, 477 struct compat_itimerspec __user *otmr); 478 asmlinkage long compat_sys_timerfd_gettime(int ufd, 479 struct compat_itimerspec __user *otmr); 480 481 asmlinkage long compat_sys_move_pages(pid_t pid, compat_ulong_t nr_pages, 482 __u32 __user *pages, 483 const int __user *nodes, 484 int __user *status, 485 int flags); 486 asmlinkage long compat_sys_futimesat(unsigned int dfd, 487 const char __user *filename, 488 struct compat_timeval __user *t); 489 asmlinkage long compat_sys_utimes(const char __user *filename, 490 struct compat_timeval __user *t); 491 asmlinkage long compat_sys_newstat(const char __user *filename, 492 struct compat_stat __user *statbuf); 493 asmlinkage long compat_sys_newlstat(const char __user *filename, 494 struct compat_stat __user *statbuf); 495 asmlinkage long compat_sys_newfstatat(unsigned int dfd, 496 const char __user *filename, 497 struct compat_stat __user *statbuf, 498 int flag); 499 asmlinkage long compat_sys_newfstat(unsigned int fd, 500 struct compat_stat __user *statbuf); 501 asmlinkage long compat_sys_statfs(const char __user *pathname, 502 struct compat_statfs __user *buf); 503 asmlinkage long compat_sys_fstatfs(unsigned int fd, 504 struct compat_statfs __user *buf); 505 asmlinkage long compat_sys_statfs64(const char __user *pathname, 506 compat_size_t sz, 507 struct compat_statfs64 __user *buf); 508 asmlinkage long compat_sys_fstatfs64(unsigned int fd, compat_size_t sz, 509 struct compat_statfs64 __user *buf); 510 asmlinkage long compat_sys_fcntl64(unsigned int fd, unsigned int cmd, 511 compat_ulong_t arg); 512 asmlinkage long compat_sys_fcntl(unsigned int fd, unsigned int cmd, 513 compat_ulong_t arg); 514 asmlinkage long compat_sys_io_setup(unsigned nr_reqs, u32 __user *ctx32p); 515 asmlinkage long compat_sys_io_getevents(compat_aio_context_t ctx_id, 516 compat_long_t min_nr, 517 compat_long_t nr, 518 struct io_event __user *events, 519 struct compat_timespec __user *timeout); 520 asmlinkage long compat_sys_io_submit(compat_aio_context_t ctx_id, int nr, 521 u32 __user *iocb); 522 asmlinkage long compat_sys_mount(const char __user *dev_name, 523 const char __user *dir_name, 524 const char __user *type, compat_ulong_t flags, 525 const void __user *data); 526 asmlinkage long compat_sys_old_readdir(unsigned int fd, 527 struct compat_old_linux_dirent __user *, 528 unsigned int count); 529 asmlinkage long compat_sys_getdents(unsigned int fd, 530 struct compat_linux_dirent __user *dirent, 531 unsigned int count); 532 #ifdef __ARCH_WANT_COMPAT_SYS_GETDENTS64 533 asmlinkage long compat_sys_getdents64(unsigned int fd, 534 struct linux_dirent64 __user *dirent, 535 unsigned int count); 536 #endif 537 asmlinkage long compat_sys_vmsplice(int fd, const struct compat_iovec __user *, 538 unsigned int nr_segs, unsigned int flags); 539 asmlinkage long compat_sys_open(const char __user *filename, int flags, 540 umode_t mode); 541 asmlinkage long compat_sys_openat(int dfd, const char __user *filename, 542 int flags, umode_t mode); 543 asmlinkage long compat_sys_open_by_handle_at(int mountdirfd, 544 struct file_handle __user *handle, 545 int flags); 546 asmlinkage long compat_sys_truncate(const char __user *, compat_off_t); 547 asmlinkage long compat_sys_ftruncate(unsigned int, compat_ulong_t); 548 asmlinkage long compat_sys_pselect6(int n, compat_ulong_t __user *inp, 549 compat_ulong_t __user *outp, 550 compat_ulong_t __user *exp, 551 struct compat_timespec __user *tsp, 552 void __user *sig); 553 asmlinkage long compat_sys_ppoll(struct pollfd __user *ufds, 554 unsigned int nfds, 555 struct compat_timespec __user *tsp, 556 const compat_sigset_t __user *sigmask, 557 compat_size_t sigsetsize); 558 asmlinkage long compat_sys_signalfd4(int ufd, 559 const compat_sigset_t __user *sigmask, 560 compat_size_t sigsetsize, int flags); 561 asmlinkage long compat_sys_get_mempolicy(int __user *policy, 562 compat_ulong_t __user *nmask, 563 compat_ulong_t maxnode, 564 compat_ulong_t addr, 565 compat_ulong_t flags); 566 asmlinkage long compat_sys_set_mempolicy(int mode, compat_ulong_t __user *nmask, 567 compat_ulong_t maxnode); 568 asmlinkage long compat_sys_mbind(compat_ulong_t start, compat_ulong_t len, 569 compat_ulong_t mode, 570 compat_ulong_t __user *nmask, 571 compat_ulong_t maxnode, compat_ulong_t flags); 572 573 asmlinkage long compat_sys_setsockopt(int fd, int level, int optname, 574 char __user *optval, unsigned int optlen); 575 asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg, 576 unsigned flags); 577 asmlinkage long compat_sys_sendmmsg(int fd, struct compat_mmsghdr __user *mmsg, 578 unsigned vlen, unsigned int flags); 579 asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg, 580 unsigned int flags); 581 asmlinkage long compat_sys_recv(int fd, void __user *buf, compat_size_t len, 582 unsigned flags); 583 asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, compat_size_t len, 584 unsigned flags, struct sockaddr __user *addr, 585 int __user *addrlen); 586 asmlinkage long compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg, 587 unsigned vlen, unsigned int flags, 588 struct compat_timespec __user *timeout); 589 asmlinkage long compat_sys_nanosleep(struct compat_timespec __user *rqtp, 590 struct compat_timespec __user *rmtp); 591 asmlinkage long compat_sys_getitimer(int which, 592 struct compat_itimerval __user *it); 593 asmlinkage long compat_sys_setitimer(int which, 594 struct compat_itimerval __user *in, 595 struct compat_itimerval __user *out); 596 asmlinkage long compat_sys_times(struct compat_tms __user *tbuf); 597 asmlinkage long compat_sys_setrlimit(unsigned int resource, 598 struct compat_rlimit __user *rlim); 599 asmlinkage long compat_sys_getrlimit(unsigned int resource, 600 struct compat_rlimit __user *rlim); 601 asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru); 602 asmlinkage long compat_sys_sched_setaffinity(compat_pid_t pid, 603 unsigned int len, 604 compat_ulong_t __user *user_mask_ptr); 605 asmlinkage long compat_sys_sched_getaffinity(compat_pid_t pid, 606 unsigned int len, 607 compat_ulong_t __user *user_mask_ptr); 608 asmlinkage long compat_sys_timer_create(clockid_t which_clock, 609 struct compat_sigevent __user *timer_event_spec, 610 timer_t __user *created_timer_id); 611 asmlinkage long compat_sys_timer_settime(timer_t timer_id, int flags, 612 struct compat_itimerspec __user *new, 613 struct compat_itimerspec __user *old); 614 asmlinkage long compat_sys_timer_gettime(timer_t timer_id, 615 struct compat_itimerspec __user *setting); 616 asmlinkage long compat_sys_clock_settime(clockid_t which_clock, 617 struct compat_timespec __user *tp); 618 asmlinkage long compat_sys_clock_gettime(clockid_t which_clock, 619 struct compat_timespec __user *tp); 620 asmlinkage long compat_sys_clock_adjtime(clockid_t which_clock, 621 struct compat_timex __user *tp); 622 asmlinkage long compat_sys_clock_getres(clockid_t which_clock, 623 struct compat_timespec __user *tp); 624 asmlinkage long compat_sys_clock_nanosleep(clockid_t which_clock, int flags, 625 struct compat_timespec __user *rqtp, 626 struct compat_timespec __user *rmtp); 627 asmlinkage long compat_sys_rt_sigtimedwait(compat_sigset_t __user *uthese, 628 struct compat_siginfo __user *uinfo, 629 struct compat_timespec __user *uts, compat_size_t sigsetsize); 630 asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset, 631 compat_size_t sigsetsize); 632 asmlinkage long compat_sys_rt_sigprocmask(int how, compat_sigset_t __user *set, 633 compat_sigset_t __user *oset, 634 compat_size_t sigsetsize); 635 asmlinkage long compat_sys_rt_sigpending(compat_sigset_t __user *uset, 636 compat_size_t sigsetsize); 637 #ifndef CONFIG_ODD_RT_SIGACTION 638 asmlinkage long compat_sys_rt_sigaction(int, 639 const struct compat_sigaction __user *, 640 struct compat_sigaction __user *, 641 compat_size_t); 642 #endif 643 asmlinkage long compat_sys_rt_sigqueueinfo(compat_pid_t pid, int sig, 644 struct compat_siginfo __user *uinfo); 645 asmlinkage long compat_sys_sysinfo(struct compat_sysinfo __user *info); 646 asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd, 647 compat_ulong_t arg); 648 asmlinkage long compat_sys_futex(u32 __user *uaddr, int op, u32 val, 649 struct compat_timespec __user *utime, u32 __user *uaddr2, 650 u32 val3); 651 asmlinkage long compat_sys_getsockopt(int fd, int level, int optname, 652 char __user *optval, int __user *optlen); 653 asmlinkage long compat_sys_kexec_load(compat_ulong_t entry, 654 compat_ulong_t nr_segments, 655 struct compat_kexec_segment __user *, 656 compat_ulong_t flags); 657 asmlinkage long compat_sys_mq_getsetattr(mqd_t mqdes, 658 const struct compat_mq_attr __user *u_mqstat, 659 struct compat_mq_attr __user *u_omqstat); 660 asmlinkage long compat_sys_mq_notify(mqd_t mqdes, 661 const struct compat_sigevent __user *u_notification); 662 asmlinkage long compat_sys_mq_open(const char __user *u_name, 663 int oflag, compat_mode_t mode, 664 struct compat_mq_attr __user *u_attr); 665 asmlinkage long compat_sys_mq_timedsend(mqd_t mqdes, 666 const char __user *u_msg_ptr, 667 compat_size_t msg_len, unsigned int msg_prio, 668 const struct compat_timespec __user *u_abs_timeout); 669 asmlinkage ssize_t compat_sys_mq_timedreceive(mqd_t mqdes, 670 char __user *u_msg_ptr, 671 compat_size_t msg_len, unsigned int __user *u_msg_prio, 672 const struct compat_timespec __user *u_abs_timeout); 673 asmlinkage long compat_sys_socketcall(int call, u32 __user *args); 674 asmlinkage long compat_sys_sysctl(struct compat_sysctl_args __user *args); 675 676 extern ssize_t compat_rw_copy_check_uvector(int type, 677 const struct compat_iovec __user *uvector, 678 unsigned long nr_segs, 679 unsigned long fast_segs, struct iovec *fast_pointer, 680 struct iovec **ret_pointer); 681 682 extern void __user *compat_alloc_user_space(unsigned long len); 683 684 asmlinkage ssize_t compat_sys_process_vm_readv(compat_pid_t pid, 685 const struct compat_iovec __user *lvec, 686 compat_ulong_t liovcnt, const struct compat_iovec __user *rvec, 687 compat_ulong_t riovcnt, compat_ulong_t flags); 688 asmlinkage ssize_t compat_sys_process_vm_writev(compat_pid_t pid, 689 const struct compat_iovec __user *lvec, 690 compat_ulong_t liovcnt, const struct compat_iovec __user *rvec, 691 compat_ulong_t riovcnt, compat_ulong_t flags); 692 693 asmlinkage long compat_sys_sendfile(int out_fd, int in_fd, 694 compat_off_t __user *offset, compat_size_t count); 695 asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd, 696 compat_loff_t __user *offset, compat_size_t count); 697 asmlinkage long compat_sys_sigaltstack(const compat_stack_t __user *uss_ptr, 698 compat_stack_t __user *uoss_ptr); 699 700 #ifdef __ARCH_WANT_SYS_SIGPENDING 701 asmlinkage long compat_sys_sigpending(compat_old_sigset_t __user *set); 702 #endif 703 704 #ifdef __ARCH_WANT_SYS_SIGPROCMASK 705 asmlinkage long compat_sys_sigprocmask(int how, compat_old_sigset_t __user *nset, 706 compat_old_sigset_t __user *oset); 707 #endif 708 709 int compat_restore_altstack(const compat_stack_t __user *uss); 710 int __compat_save_altstack(compat_stack_t __user *, unsigned long); 711 #define compat_save_altstack_ex(uss, sp) do { \ 712 compat_stack_t __user *__uss = uss; \ 713 struct task_struct *t = current; \ 714 put_user_ex(ptr_to_compat((void __user *)t->sas_ss_sp), &__uss->ss_sp); \ 715 put_user_ex(sas_ss_flags(sp), &__uss->ss_flags); \ 716 put_user_ex(t->sas_ss_size, &__uss->ss_size); \ 717 } while (0); 718 719 asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid, 720 struct compat_timespec __user *interval); 721 722 asmlinkage long compat_sys_fanotify_mark(int, unsigned int, __u32, __u32, 723 int, const char __user *); 724 725 /* 726 * For most but not all architectures, "am I in a compat syscall?" and 727 * "am I a compat task?" are the same question. For architectures on which 728 * they aren't the same question, arch code can override in_compat_syscall. 729 */ 730 731 #ifndef in_compat_syscall 732 static inline bool in_compat_syscall(void) { return is_compat_task(); } 733 #endif 734 735 #else 736 737 #define is_compat_task() (0) 738 static inline bool in_compat_syscall(void) { return false; } 739 740 #endif /* CONFIG_COMPAT */ 741 742 #endif /* _LINUX_COMPAT_H */ 743