1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _LINUX_COMPAT_H 3 #define _LINUX_COMPAT_H 4 /* 5 * These are the type definitions for the architecture specific 6 * syscall compatibility layer. 7 */ 8 9 #include <linux/types.h> 10 11 #ifdef CONFIG_COMPAT 12 13 #include <linux/stat.h> 14 #include <linux/param.h> /* for HZ */ 15 #include <linux/sem.h> 16 #include <linux/socket.h> 17 #include <linux/if.h> 18 #include <linux/fs.h> 19 #include <linux/aio_abi.h> /* for aio_context_t */ 20 #include <linux/unistd.h> 21 22 #include <asm/compat.h> 23 #include <asm/siginfo.h> 24 #include <asm/signal.h> 25 26 #ifndef COMPAT_USE_64BIT_TIME 27 #define COMPAT_USE_64BIT_TIME 0 28 #endif 29 30 #ifndef __SC_DELOUSE 31 #define __SC_DELOUSE(t,v) ((__force t)(unsigned long)(v)) 32 #endif 33 34 #define COMPAT_SYSCALL_DEFINE0(name) \ 35 asmlinkage long compat_sys_##name(void) 36 37 #define COMPAT_SYSCALL_DEFINE1(name, ...) \ 38 COMPAT_SYSCALL_DEFINEx(1, _##name, __VA_ARGS__) 39 #define COMPAT_SYSCALL_DEFINE2(name, ...) \ 40 COMPAT_SYSCALL_DEFINEx(2, _##name, __VA_ARGS__) 41 #define COMPAT_SYSCALL_DEFINE3(name, ...) \ 42 COMPAT_SYSCALL_DEFINEx(3, _##name, __VA_ARGS__) 43 #define COMPAT_SYSCALL_DEFINE4(name, ...) \ 44 COMPAT_SYSCALL_DEFINEx(4, _##name, __VA_ARGS__) 45 #define COMPAT_SYSCALL_DEFINE5(name, ...) \ 46 COMPAT_SYSCALL_DEFINEx(5, _##name, __VA_ARGS__) 47 #define COMPAT_SYSCALL_DEFINE6(name, ...) \ 48 COMPAT_SYSCALL_DEFINEx(6, _##name, __VA_ARGS__) 49 50 #define COMPAT_SYSCALL_DEFINEx(x, name, ...) \ 51 asmlinkage long compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))\ 52 __attribute__((alias(__stringify(compat_SyS##name)))); \ 53 static inline long C_SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__));\ 54 asmlinkage long compat_SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__));\ 55 asmlinkage long compat_SyS##name(__MAP(x,__SC_LONG,__VA_ARGS__))\ 56 { \ 57 return C_SYSC##name(__MAP(x,__SC_DELOUSE,__VA_ARGS__)); \ 58 } \ 59 static inline long C_SYSC##name(__MAP(x,__SC_DECL,__VA_ARGS__)) 60 61 #ifndef compat_user_stack_pointer 62 #define compat_user_stack_pointer() current_user_stack_pointer() 63 #endif 64 #ifndef compat_sigaltstack /* we'll need that for MIPS */ 65 typedef struct compat_sigaltstack { 66 compat_uptr_t ss_sp; 67 int ss_flags; 68 compat_size_t ss_size; 69 } compat_stack_t; 70 #endif 71 72 #define compat_jiffies_to_clock_t(x) \ 73 (((unsigned long)(x) * COMPAT_USER_HZ) / HZ) 74 75 typedef __compat_uid32_t compat_uid_t; 76 typedef __compat_gid32_t compat_gid_t; 77 78 typedef compat_ulong_t compat_aio_context_t; 79 80 struct compat_sel_arg_struct; 81 struct rusage; 82 83 struct compat_itimerspec { 84 struct compat_timespec it_interval; 85 struct compat_timespec it_value; 86 }; 87 88 struct compat_utimbuf { 89 compat_time_t actime; 90 compat_time_t modtime; 91 }; 92 93 struct compat_itimerval { 94 struct compat_timeval it_interval; 95 struct compat_timeval it_value; 96 }; 97 98 struct itimerval; 99 int get_compat_itimerval(struct itimerval *, const struct compat_itimerval __user *); 100 int put_compat_itimerval(struct compat_itimerval __user *, const struct itimerval *); 101 102 struct compat_tms { 103 compat_clock_t tms_utime; 104 compat_clock_t tms_stime; 105 compat_clock_t tms_cutime; 106 compat_clock_t tms_cstime; 107 }; 108 109 struct compat_timex { 110 compat_uint_t modes; 111 compat_long_t offset; 112 compat_long_t freq; 113 compat_long_t maxerror; 114 compat_long_t esterror; 115 compat_int_t status; 116 compat_long_t constant; 117 compat_long_t precision; 118 compat_long_t tolerance; 119 struct compat_timeval time; 120 compat_long_t tick; 121 compat_long_t ppsfreq; 122 compat_long_t jitter; 123 compat_int_t shift; 124 compat_long_t stabil; 125 compat_long_t jitcnt; 126 compat_long_t calcnt; 127 compat_long_t errcnt; 128 compat_long_t stbcnt; 129 compat_int_t tai; 130 131 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; compat_int_t:32; 133 compat_int_t:32; compat_int_t:32; compat_int_t:32; 134 }; 135 136 struct timex; 137 int compat_get_timex(struct timex *, const struct compat_timex __user *); 138 int compat_put_timex(struct compat_timex __user *, const struct timex *); 139 140 #define _COMPAT_NSIG_WORDS (_COMPAT_NSIG / _COMPAT_NSIG_BPW) 141 142 typedef struct { 143 compat_sigset_word sig[_COMPAT_NSIG_WORDS]; 144 } compat_sigset_t; 145 146 struct compat_sigaction { 147 #ifndef __ARCH_HAS_IRIX_SIGACTION 148 compat_uptr_t sa_handler; 149 compat_ulong_t sa_flags; 150 #else 151 compat_uint_t sa_flags; 152 compat_uptr_t sa_handler; 153 #endif 154 #ifdef __ARCH_HAS_SA_RESTORER 155 compat_uptr_t sa_restorer; 156 #endif 157 compat_sigset_t sa_mask __packed; 158 }; 159 160 /* 161 * These functions operate on 32- or 64-bit specs depending on 162 * COMPAT_USE_64BIT_TIME, hence the void user pointer arguments. 163 */ 164 extern int compat_get_timespec(struct timespec *, const void __user *); 165 extern int compat_put_timespec(const struct timespec *, void __user *); 166 extern int compat_get_timeval(struct timeval *, const void __user *); 167 extern int compat_put_timeval(const struct timeval *, void __user *); 168 extern int compat_get_timespec64(struct timespec64 *, const void __user *); 169 extern int compat_put_timespec64(const struct timespec64 *, void __user *); 170 extern int get_compat_itimerspec64(struct itimerspec64 *its, 171 const struct compat_itimerspec __user *uits); 172 extern int put_compat_itimerspec64(const struct itimerspec64 *its, 173 struct compat_itimerspec __user *uits); 174 175 struct compat_iovec { 176 compat_uptr_t iov_base; 177 compat_size_t iov_len; 178 }; 179 180 struct compat_rlimit { 181 compat_ulong_t rlim_cur; 182 compat_ulong_t rlim_max; 183 }; 184 185 struct compat_rusage { 186 struct compat_timeval ru_utime; 187 struct compat_timeval ru_stime; 188 compat_long_t ru_maxrss; 189 compat_long_t ru_ixrss; 190 compat_long_t ru_idrss; 191 compat_long_t ru_isrss; 192 compat_long_t ru_minflt; 193 compat_long_t ru_majflt; 194 compat_long_t ru_nswap; 195 compat_long_t ru_inblock; 196 compat_long_t ru_oublock; 197 compat_long_t ru_msgsnd; 198 compat_long_t ru_msgrcv; 199 compat_long_t ru_nsignals; 200 compat_long_t ru_nvcsw; 201 compat_long_t ru_nivcsw; 202 }; 203 204 extern int put_compat_rusage(const struct rusage *, 205 struct compat_rusage __user *); 206 207 struct compat_siginfo; 208 209 extern asmlinkage long compat_sys_waitid(int, compat_pid_t, 210 struct compat_siginfo __user *, int, 211 struct compat_rusage __user *); 212 213 struct compat_dirent { 214 u32 d_ino; 215 compat_off_t d_off; 216 u16 d_reclen; 217 char d_name[256]; 218 }; 219 220 struct compat_ustat { 221 compat_daddr_t f_tfree; 222 compat_ino_t f_tinode; 223 char f_fname[6]; 224 char f_fpack[6]; 225 }; 226 227 #define COMPAT_SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE/sizeof(int)) - 3) 228 229 typedef struct compat_sigevent { 230 compat_sigval_t sigev_value; 231 compat_int_t sigev_signo; 232 compat_int_t sigev_notify; 233 union { 234 compat_int_t _pad[COMPAT_SIGEV_PAD_SIZE]; 235 compat_int_t _tid; 236 237 struct { 238 compat_uptr_t _function; 239 compat_uptr_t _attribute; 240 } _sigev_thread; 241 } _sigev_un; 242 } compat_sigevent_t; 243 244 struct compat_ifmap { 245 compat_ulong_t mem_start; 246 compat_ulong_t mem_end; 247 unsigned short base_addr; 248 unsigned char irq; 249 unsigned char dma; 250 unsigned char port; 251 }; 252 253 struct compat_if_settings { 254 unsigned int type; /* Type of physical device or protocol */ 255 unsigned int size; /* Size of the data allocated by the caller */ 256 compat_uptr_t ifs_ifsu; /* union of pointers */ 257 }; 258 259 struct compat_ifreq { 260 union { 261 char ifrn_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 262 } ifr_ifrn; 263 union { 264 struct sockaddr ifru_addr; 265 struct sockaddr ifru_dstaddr; 266 struct sockaddr ifru_broadaddr; 267 struct sockaddr ifru_netmask; 268 struct sockaddr ifru_hwaddr; 269 short ifru_flags; 270 compat_int_t ifru_ivalue; 271 compat_int_t ifru_mtu; 272 struct compat_ifmap ifru_map; 273 char ifru_slave[IFNAMSIZ]; /* Just fits the size */ 274 char ifru_newname[IFNAMSIZ]; 275 compat_caddr_t ifru_data; 276 struct compat_if_settings ifru_settings; 277 } ifr_ifru; 278 }; 279 280 struct compat_ifconf { 281 compat_int_t ifc_len; /* size of buffer */ 282 compat_caddr_t ifcbuf; 283 }; 284 285 struct compat_robust_list { 286 compat_uptr_t next; 287 }; 288 289 struct compat_robust_list_head { 290 struct compat_robust_list list; 291 compat_long_t futex_offset; 292 compat_uptr_t list_op_pending; 293 }; 294 295 #ifdef CONFIG_COMPAT_OLD_SIGACTION 296 struct compat_old_sigaction { 297 compat_uptr_t sa_handler; 298 compat_old_sigset_t sa_mask; 299 compat_ulong_t sa_flags; 300 compat_uptr_t sa_restorer; 301 }; 302 #endif 303 304 struct compat_keyctl_kdf_params { 305 compat_uptr_t hashname; 306 compat_uptr_t otherinfo; 307 __u32 otherinfolen; 308 __u32 __spare[8]; 309 }; 310 311 struct compat_statfs; 312 struct compat_statfs64; 313 struct compat_old_linux_dirent; 314 struct compat_linux_dirent; 315 struct linux_dirent64; 316 struct compat_msghdr; 317 struct compat_mmsghdr; 318 struct compat_sysinfo; 319 struct compat_sysctl_args; 320 struct compat_kexec_segment; 321 struct compat_mq_attr; 322 struct compat_msgbuf; 323 324 extern void compat_exit_robust_list(struct task_struct *curr); 325 326 asmlinkage long 327 compat_sys_set_robust_list(struct compat_robust_list_head __user *head, 328 compat_size_t len); 329 asmlinkage long 330 compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr, 331 compat_size_t __user *len_ptr); 332 333 asmlinkage long compat_sys_ipc(u32, int, int, u32, compat_uptr_t, u32); 334 asmlinkage long compat_sys_shmat(int shmid, compat_uptr_t shmaddr, int shmflg); 335 asmlinkage long compat_sys_semctl(int semid, int semnum, int cmd, int arg); 336 asmlinkage long compat_sys_msgsnd(int msqid, compat_uptr_t msgp, 337 compat_ssize_t msgsz, int msgflg); 338 asmlinkage long compat_sys_msgrcv(int msqid, compat_uptr_t msgp, 339 compat_ssize_t msgsz, compat_long_t msgtyp, int msgflg); 340 long compat_sys_msgctl(int first, int second, void __user *uptr); 341 long compat_sys_shmctl(int first, int second, void __user *uptr); 342 long compat_sys_semtimedop(int semid, struct sembuf __user *tsems, 343 unsigned nsems, const struct compat_timespec __user *timeout); 344 asmlinkage long compat_sys_keyctl(u32 option, 345 u32 arg2, u32 arg3, u32 arg4, u32 arg5); 346 asmlinkage long compat_sys_ustat(unsigned dev, struct compat_ustat __user *u32); 347 348 asmlinkage ssize_t compat_sys_readv(compat_ulong_t fd, 349 const struct compat_iovec __user *vec, compat_ulong_t vlen); 350 asmlinkage ssize_t compat_sys_writev(compat_ulong_t fd, 351 const struct compat_iovec __user *vec, compat_ulong_t vlen); 352 asmlinkage ssize_t compat_sys_preadv(compat_ulong_t fd, 353 const struct compat_iovec __user *vec, 354 compat_ulong_t vlen, u32 pos_low, u32 pos_high); 355 asmlinkage ssize_t compat_sys_pwritev(compat_ulong_t fd, 356 const struct compat_iovec __user *vec, 357 compat_ulong_t vlen, u32 pos_low, u32 pos_high); 358 asmlinkage ssize_t compat_sys_preadv2(compat_ulong_t fd, 359 const struct compat_iovec __user *vec, 360 compat_ulong_t vlen, u32 pos_low, u32 pos_high, rwf_t flags); 361 asmlinkage ssize_t compat_sys_pwritev2(compat_ulong_t fd, 362 const struct compat_iovec __user *vec, 363 compat_ulong_t vlen, u32 pos_low, u32 pos_high, rwf_t flags); 364 365 #ifdef __ARCH_WANT_COMPAT_SYS_PREADV64 366 asmlinkage long compat_sys_preadv64(unsigned long fd, 367 const struct compat_iovec __user *vec, 368 unsigned long vlen, loff_t pos); 369 #endif 370 371 #ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64 372 asmlinkage long compat_sys_pwritev64(unsigned long fd, 373 const struct compat_iovec __user *vec, 374 unsigned long vlen, loff_t pos); 375 #endif 376 377 #ifdef __ARCH_WANT_COMPAT_SYS_PREADV64V2 378 asmlinkage long compat_sys_readv64v2(unsigned long fd, 379 const struct compat_iovec __user *vec, 380 unsigned long vlen, loff_t pos, rwf_t flags); 381 #endif 382 383 #ifdef __ARCH_WANT_COMPAT_SYS_PWRITEV64V2 384 asmlinkage long compat_sys_pwritev64v2(unsigned long fd, 385 const struct compat_iovec __user *vec, 386 unsigned long vlen, loff_t pos, rwf_t flags); 387 #endif 388 389 asmlinkage long compat_sys_lseek(unsigned int, compat_off_t, unsigned int); 390 391 asmlinkage long compat_sys_execve(const char __user *filename, const compat_uptr_t __user *argv, 392 const compat_uptr_t __user *envp); 393 asmlinkage long compat_sys_execveat(int dfd, const char __user *filename, 394 const compat_uptr_t __user *argv, 395 const compat_uptr_t __user *envp, int flags); 396 397 asmlinkage long compat_sys_select(int n, compat_ulong_t __user *inp, 398 compat_ulong_t __user *outp, compat_ulong_t __user *exp, 399 struct compat_timeval __user *tvp); 400 401 asmlinkage long compat_sys_old_select(struct compat_sel_arg_struct __user *arg); 402 403 asmlinkage long compat_sys_wait4(compat_pid_t pid, 404 compat_uint_t __user *stat_addr, int options, 405 struct compat_rusage __user *ru); 406 407 #define BITS_PER_COMPAT_LONG (8*sizeof(compat_long_t)) 408 409 #define BITS_TO_COMPAT_LONGS(bits) DIV_ROUND_UP(bits, BITS_PER_COMPAT_LONG) 410 411 long compat_get_bitmap(unsigned long *mask, const compat_ulong_t __user *umask, 412 unsigned long bitmap_size); 413 long compat_put_bitmap(compat_ulong_t __user *umask, unsigned long *mask, 414 unsigned long bitmap_size); 415 int copy_siginfo_from_user32(siginfo_t *to, struct compat_siginfo __user *from); 416 int copy_siginfo_to_user32(struct compat_siginfo __user *to, const siginfo_t *from); 417 int get_compat_sigevent(struct sigevent *event, 418 const struct compat_sigevent __user *u_event); 419 long compat_sys_rt_tgsigqueueinfo(compat_pid_t tgid, compat_pid_t pid, int sig, 420 struct compat_siginfo __user *uinfo); 421 #ifdef CONFIG_COMPAT_OLD_SIGACTION 422 asmlinkage long compat_sys_sigaction(int sig, 423 const struct compat_old_sigaction __user *act, 424 struct compat_old_sigaction __user *oact); 425 #endif 426 427 static inline int compat_timeval_compare(struct compat_timeval *lhs, 428 struct compat_timeval *rhs) 429 { 430 if (lhs->tv_sec < rhs->tv_sec) 431 return -1; 432 if (lhs->tv_sec > rhs->tv_sec) 433 return 1; 434 return lhs->tv_usec - rhs->tv_usec; 435 } 436 437 static inline int compat_timespec_compare(struct compat_timespec *lhs, 438 struct compat_timespec *rhs) 439 { 440 if (lhs->tv_sec < rhs->tv_sec) 441 return -1; 442 if (lhs->tv_sec > rhs->tv_sec) 443 return 1; 444 return lhs->tv_nsec - rhs->tv_nsec; 445 } 446 447 asmlinkage long compat_sys_gettimeofday(struct compat_timeval __user *tv, 448 struct timezone __user *tz); 449 asmlinkage long compat_sys_settimeofday(struct compat_timeval __user *tv, 450 struct timezone __user *tz); 451 452 asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp); 453 454 extern int get_compat_sigset(sigset_t *set, const compat_sigset_t __user *compat); 455 extern int put_compat_sigset(compat_sigset_t __user *compat, 456 const sigset_t *set, unsigned int size); 457 458 asmlinkage long compat_sys_migrate_pages(compat_pid_t pid, 459 compat_ulong_t maxnode, const compat_ulong_t __user *old_nodes, 460 const compat_ulong_t __user *new_nodes); 461 462 extern int compat_ptrace_request(struct task_struct *child, 463 compat_long_t request, 464 compat_ulong_t addr, compat_ulong_t data); 465 466 extern long compat_arch_ptrace(struct task_struct *child, compat_long_t request, 467 compat_ulong_t addr, compat_ulong_t data); 468 asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid, 469 compat_long_t addr, compat_long_t data); 470 471 asmlinkage long compat_sys_lookup_dcookie(u32, u32, char __user *, compat_size_t); 472 /* 473 * epoll (fs/eventpoll.c) compat bits follow ... 474 */ 475 struct epoll_event; /* fortunately, this one is fixed-layout */ 476 asmlinkage long compat_sys_epoll_pwait(int epfd, 477 struct epoll_event __user *events, 478 int maxevents, int timeout, 479 const compat_sigset_t __user *sigmask, 480 compat_size_t sigsetsize); 481 482 asmlinkage long compat_sys_utime(const char __user *filename, 483 struct compat_utimbuf __user *t); 484 asmlinkage long compat_sys_utimensat(unsigned int dfd, 485 const char __user *filename, 486 struct compat_timespec __user *t, 487 int flags); 488 489 asmlinkage long compat_sys_time(compat_time_t __user *tloc); 490 asmlinkage long compat_sys_stime(compat_time_t __user *tptr); 491 asmlinkage long compat_sys_signalfd(int ufd, 492 const compat_sigset_t __user *sigmask, 493 compat_size_t sigsetsize); 494 asmlinkage long compat_sys_timerfd_settime(int ufd, int flags, 495 const struct compat_itimerspec __user *utmr, 496 struct compat_itimerspec __user *otmr); 497 asmlinkage long compat_sys_timerfd_gettime(int ufd, 498 struct compat_itimerspec __user *otmr); 499 500 asmlinkage long compat_sys_move_pages(pid_t pid, compat_ulong_t nr_pages, 501 __u32 __user *pages, 502 const int __user *nodes, 503 int __user *status, 504 int flags); 505 asmlinkage long compat_sys_futimesat(unsigned int dfd, 506 const char __user *filename, 507 struct compat_timeval __user *t); 508 asmlinkage long compat_sys_utimes(const char __user *filename, 509 struct compat_timeval __user *t); 510 asmlinkage long compat_sys_newstat(const char __user *filename, 511 struct compat_stat __user *statbuf); 512 asmlinkage long compat_sys_newlstat(const char __user *filename, 513 struct compat_stat __user *statbuf); 514 asmlinkage long compat_sys_newfstatat(unsigned int dfd, 515 const char __user *filename, 516 struct compat_stat __user *statbuf, 517 int flag); 518 asmlinkage long compat_sys_newfstat(unsigned int fd, 519 struct compat_stat __user *statbuf); 520 asmlinkage long compat_sys_statfs(const char __user *pathname, 521 struct compat_statfs __user *buf); 522 asmlinkage long compat_sys_fstatfs(unsigned int fd, 523 struct compat_statfs __user *buf); 524 asmlinkage long compat_sys_statfs64(const char __user *pathname, 525 compat_size_t sz, 526 struct compat_statfs64 __user *buf); 527 asmlinkage long compat_sys_fstatfs64(unsigned int fd, compat_size_t sz, 528 struct compat_statfs64 __user *buf); 529 asmlinkage long compat_sys_fcntl64(unsigned int fd, unsigned int cmd, 530 compat_ulong_t arg); 531 asmlinkage long compat_sys_fcntl(unsigned int fd, unsigned int cmd, 532 compat_ulong_t arg); 533 asmlinkage long compat_sys_io_setup(unsigned nr_reqs, u32 __user *ctx32p); 534 asmlinkage long compat_sys_io_getevents(compat_aio_context_t ctx_id, 535 compat_long_t min_nr, 536 compat_long_t nr, 537 struct io_event __user *events, 538 struct compat_timespec __user *timeout); 539 asmlinkage long compat_sys_io_submit(compat_aio_context_t ctx_id, int nr, 540 u32 __user *iocb); 541 asmlinkage long compat_sys_mount(const char __user *dev_name, 542 const char __user *dir_name, 543 const char __user *type, compat_ulong_t flags, 544 const void __user *data); 545 asmlinkage long compat_sys_old_readdir(unsigned int fd, 546 struct compat_old_linux_dirent __user *, 547 unsigned int count); 548 asmlinkage long compat_sys_getdents(unsigned int fd, 549 struct compat_linux_dirent __user *dirent, 550 unsigned int count); 551 asmlinkage long compat_sys_vmsplice(int fd, const struct compat_iovec __user *, 552 unsigned int nr_segs, unsigned int flags); 553 asmlinkage long compat_sys_open(const char __user *filename, int flags, 554 umode_t mode); 555 asmlinkage long compat_sys_openat(int dfd, const char __user *filename, 556 int flags, umode_t mode); 557 asmlinkage long compat_sys_open_by_handle_at(int mountdirfd, 558 struct file_handle __user *handle, 559 int flags); 560 asmlinkage long compat_sys_truncate(const char __user *, compat_off_t); 561 asmlinkage long compat_sys_ftruncate(unsigned int, compat_ulong_t); 562 asmlinkage long compat_sys_pselect6(int n, compat_ulong_t __user *inp, 563 compat_ulong_t __user *outp, 564 compat_ulong_t __user *exp, 565 struct compat_timespec __user *tsp, 566 void __user *sig); 567 asmlinkage long compat_sys_ppoll(struct pollfd __user *ufds, 568 unsigned int nfds, 569 struct compat_timespec __user *tsp, 570 const compat_sigset_t __user *sigmask, 571 compat_size_t sigsetsize); 572 asmlinkage long compat_sys_signalfd4(int ufd, 573 const compat_sigset_t __user *sigmask, 574 compat_size_t sigsetsize, int flags); 575 asmlinkage long compat_sys_get_mempolicy(int __user *policy, 576 compat_ulong_t __user *nmask, 577 compat_ulong_t maxnode, 578 compat_ulong_t addr, 579 compat_ulong_t flags); 580 asmlinkage long compat_sys_set_mempolicy(int mode, compat_ulong_t __user *nmask, 581 compat_ulong_t maxnode); 582 asmlinkage long compat_sys_mbind(compat_ulong_t start, compat_ulong_t len, 583 compat_ulong_t mode, 584 compat_ulong_t __user *nmask, 585 compat_ulong_t maxnode, compat_ulong_t flags); 586 587 asmlinkage long compat_sys_setsockopt(int fd, int level, int optname, 588 char __user *optval, unsigned int optlen); 589 asmlinkage long compat_sys_sendmsg(int fd, struct compat_msghdr __user *msg, 590 unsigned flags); 591 asmlinkage long compat_sys_sendmmsg(int fd, struct compat_mmsghdr __user *mmsg, 592 unsigned vlen, unsigned int flags); 593 asmlinkage long compat_sys_recvmsg(int fd, struct compat_msghdr __user *msg, 594 unsigned int flags); 595 asmlinkage long compat_sys_recv(int fd, void __user *buf, compat_size_t len, 596 unsigned flags); 597 asmlinkage long compat_sys_recvfrom(int fd, void __user *buf, compat_size_t len, 598 unsigned flags, struct sockaddr __user *addr, 599 int __user *addrlen); 600 asmlinkage long compat_sys_recvmmsg(int fd, struct compat_mmsghdr __user *mmsg, 601 unsigned vlen, unsigned int flags, 602 struct compat_timespec __user *timeout); 603 asmlinkage long compat_sys_nanosleep(struct compat_timespec __user *rqtp, 604 struct compat_timespec __user *rmtp); 605 asmlinkage long compat_sys_getitimer(int which, 606 struct compat_itimerval __user *it); 607 asmlinkage long compat_sys_setitimer(int which, 608 struct compat_itimerval __user *in, 609 struct compat_itimerval __user *out); 610 asmlinkage long compat_sys_times(struct compat_tms __user *tbuf); 611 asmlinkage long compat_sys_setrlimit(unsigned int resource, 612 struct compat_rlimit __user *rlim); 613 asmlinkage long compat_sys_getrlimit(unsigned int resource, 614 struct compat_rlimit __user *rlim); 615 asmlinkage long compat_sys_getrusage(int who, struct compat_rusage __user *ru); 616 asmlinkage long compat_sys_sched_setaffinity(compat_pid_t pid, 617 unsigned int len, 618 compat_ulong_t __user *user_mask_ptr); 619 asmlinkage long compat_sys_sched_getaffinity(compat_pid_t pid, 620 unsigned int len, 621 compat_ulong_t __user *user_mask_ptr); 622 asmlinkage long compat_sys_timer_create(clockid_t which_clock, 623 struct compat_sigevent __user *timer_event_spec, 624 timer_t __user *created_timer_id); 625 asmlinkage long compat_sys_timer_settime(timer_t timer_id, int flags, 626 struct compat_itimerspec __user *new, 627 struct compat_itimerspec __user *old); 628 asmlinkage long compat_sys_timer_gettime(timer_t timer_id, 629 struct compat_itimerspec __user *setting); 630 asmlinkage long compat_sys_clock_settime(clockid_t which_clock, 631 struct compat_timespec __user *tp); 632 asmlinkage long compat_sys_clock_gettime(clockid_t which_clock, 633 struct compat_timespec __user *tp); 634 asmlinkage long compat_sys_clock_adjtime(clockid_t which_clock, 635 struct compat_timex __user *tp); 636 asmlinkage long compat_sys_clock_getres(clockid_t which_clock, 637 struct compat_timespec __user *tp); 638 asmlinkage long compat_sys_clock_nanosleep(clockid_t which_clock, int flags, 639 struct compat_timespec __user *rqtp, 640 struct compat_timespec __user *rmtp); 641 asmlinkage long compat_sys_rt_sigtimedwait(compat_sigset_t __user *uthese, 642 struct compat_siginfo __user *uinfo, 643 struct compat_timespec __user *uts, compat_size_t sigsetsize); 644 asmlinkage long compat_sys_rt_sigsuspend(compat_sigset_t __user *unewset, 645 compat_size_t sigsetsize); 646 asmlinkage long compat_sys_rt_sigprocmask(int how, compat_sigset_t __user *set, 647 compat_sigset_t __user *oset, 648 compat_size_t sigsetsize); 649 asmlinkage long compat_sys_rt_sigpending(compat_sigset_t __user *uset, 650 compat_size_t sigsetsize); 651 #ifndef CONFIG_ODD_RT_SIGACTION 652 asmlinkage long compat_sys_rt_sigaction(int, 653 const struct compat_sigaction __user *, 654 struct compat_sigaction __user *, 655 compat_size_t); 656 #endif 657 asmlinkage long compat_sys_rt_sigqueueinfo(compat_pid_t pid, int sig, 658 struct compat_siginfo __user *uinfo); 659 asmlinkage long compat_sys_sysinfo(struct compat_sysinfo __user *info); 660 asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd, 661 compat_ulong_t arg); 662 asmlinkage long compat_sys_futex(u32 __user *uaddr, int op, u32 val, 663 struct compat_timespec __user *utime, u32 __user *uaddr2, 664 u32 val3); 665 asmlinkage long compat_sys_getsockopt(int fd, int level, int optname, 666 char __user *optval, int __user *optlen); 667 asmlinkage long compat_sys_kexec_load(compat_ulong_t entry, 668 compat_ulong_t nr_segments, 669 struct compat_kexec_segment __user *, 670 compat_ulong_t flags); 671 asmlinkage long compat_sys_mq_getsetattr(mqd_t mqdes, 672 const struct compat_mq_attr __user *u_mqstat, 673 struct compat_mq_attr __user *u_omqstat); 674 asmlinkage long compat_sys_mq_notify(mqd_t mqdes, 675 const struct compat_sigevent __user *u_notification); 676 asmlinkage long compat_sys_mq_open(const char __user *u_name, 677 int oflag, compat_mode_t mode, 678 struct compat_mq_attr __user *u_attr); 679 asmlinkage long compat_sys_mq_timedsend(mqd_t mqdes, 680 const char __user *u_msg_ptr, 681 compat_size_t msg_len, unsigned int msg_prio, 682 const struct compat_timespec __user *u_abs_timeout); 683 asmlinkage ssize_t compat_sys_mq_timedreceive(mqd_t mqdes, 684 char __user *u_msg_ptr, 685 compat_size_t msg_len, unsigned int __user *u_msg_prio, 686 const struct compat_timespec __user *u_abs_timeout); 687 asmlinkage long compat_sys_socketcall(int call, u32 __user *args); 688 asmlinkage long compat_sys_sysctl(struct compat_sysctl_args __user *args); 689 690 extern ssize_t compat_rw_copy_check_uvector(int type, 691 const struct compat_iovec __user *uvector, 692 unsigned long nr_segs, 693 unsigned long fast_segs, struct iovec *fast_pointer, 694 struct iovec **ret_pointer); 695 696 extern void __user *compat_alloc_user_space(unsigned long len); 697 698 asmlinkage ssize_t compat_sys_process_vm_readv(compat_pid_t pid, 699 const struct compat_iovec __user *lvec, 700 compat_ulong_t liovcnt, const struct compat_iovec __user *rvec, 701 compat_ulong_t riovcnt, compat_ulong_t flags); 702 asmlinkage ssize_t compat_sys_process_vm_writev(compat_pid_t pid, 703 const struct compat_iovec __user *lvec, 704 compat_ulong_t liovcnt, const struct compat_iovec __user *rvec, 705 compat_ulong_t riovcnt, compat_ulong_t flags); 706 707 asmlinkage long compat_sys_sendfile(int out_fd, int in_fd, 708 compat_off_t __user *offset, compat_size_t count); 709 asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd, 710 compat_loff_t __user *offset, compat_size_t count); 711 asmlinkage long compat_sys_sigaltstack(const compat_stack_t __user *uss_ptr, 712 compat_stack_t __user *uoss_ptr); 713 714 #ifdef __ARCH_WANT_SYS_SIGPENDING 715 asmlinkage long compat_sys_sigpending(compat_old_sigset_t __user *set); 716 #endif 717 718 #ifdef __ARCH_WANT_SYS_SIGPROCMASK 719 asmlinkage long compat_sys_sigprocmask(int how, compat_old_sigset_t __user *nset, 720 compat_old_sigset_t __user *oset); 721 #endif 722 723 int compat_restore_altstack(const compat_stack_t __user *uss); 724 int __compat_save_altstack(compat_stack_t __user *, unsigned long); 725 #define compat_save_altstack_ex(uss, sp) do { \ 726 compat_stack_t __user *__uss = uss; \ 727 struct task_struct *t = current; \ 728 put_user_ex(ptr_to_compat((void __user *)t->sas_ss_sp), &__uss->ss_sp); \ 729 put_user_ex(t->sas_ss_flags, &__uss->ss_flags); \ 730 put_user_ex(t->sas_ss_size, &__uss->ss_size); \ 731 if (t->sas_ss_flags & SS_AUTODISARM) \ 732 sas_ss_reset(t); \ 733 } while (0); 734 735 asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid, 736 struct compat_timespec __user *interval); 737 738 asmlinkage long compat_sys_fanotify_mark(int, unsigned int, __u32, __u32, 739 int, const char __user *); 740 741 asmlinkage long compat_sys_arch_prctl(int option, unsigned long arg2); 742 743 /* 744 * For most but not all architectures, "am I in a compat syscall?" and 745 * "am I a compat task?" are the same question. For architectures on which 746 * they aren't the same question, arch code can override in_compat_syscall. 747 */ 748 749 #ifndef in_compat_syscall 750 static inline bool in_compat_syscall(void) { return is_compat_task(); } 751 #endif 752 753 /** 754 * ns_to_compat_timeval - Compat version of ns_to_timeval 755 * @nsec: the nanoseconds value to be converted 756 * 757 * Returns the compat_timeval representation of the nsec parameter. 758 */ 759 static inline struct compat_timeval ns_to_compat_timeval(s64 nsec) 760 { 761 struct timeval tv; 762 struct compat_timeval ctv; 763 764 tv = ns_to_timeval(nsec); 765 ctv.tv_sec = tv.tv_sec; 766 ctv.tv_usec = tv.tv_usec; 767 768 return ctv; 769 } 770 771 #else /* !CONFIG_COMPAT */ 772 773 #define is_compat_task() (0) 774 static inline bool in_compat_syscall(void) { return false; } 775 776 #endif /* CONFIG_COMPAT */ 777 778 #endif /* _LINUX_COMPAT_H */ 779