31#include <sys/param.h> 32#include <sys/systm.h> 33#include <sys/lock.h> 34#include <sys/mman.h> 35#include <sys/mutex.h> 36#include <sys/proc.h> 37#include <sys/resource.h> 38#include <sys/resourcevar.h> 39#include <sys/syscallsubr.h> 40#include <sys/sysproto.h> 41#include <sys/unistd.h> 42 43#include <machine/frame.h> 44#include <machine/psl.h> 45#include <machine/segments.h> 46#include <machine/sysarch.h> 47 48#include <vm/vm.h> 49#include <vm/pmap.h> 50#include <vm/vm_map.h> 51 52#include <i386/linux/linux.h> 53#include <i386/linux/linux_proto.h> 54#include <compat/linux/linux_ipc.h> 55#include <compat/linux/linux_signal.h> 56#include <compat/linux/linux_util.h> 57 58struct l_descriptor { 59 l_uint entry_number; 60 l_ulong base_addr; 61 l_uint limit; 62 l_uint seg_32bit:1; 63 l_uint contents:2; 64 l_uint read_exec_only:1; 65 l_uint limit_in_pages:1; 66 l_uint seg_not_present:1; 67 l_uint useable:1; 68}; 69 70struct l_old_select_argv { 71 l_int nfds; 72 l_fd_set *readfds; 73 l_fd_set *writefds; 74 l_fd_set *exceptfds; 75 struct l_timeval *timeout; 76}; 77 78int 79linux_to_bsd_sigaltstack(int lsa) 80{ 81 int bsa = 0; 82 83 if (lsa & LINUX_SS_DISABLE) 84 bsa |= SS_DISABLE; 85 if (lsa & LINUX_SS_ONSTACK) 86 bsa |= SS_ONSTACK; 87 return (bsa); 88} 89 90int 91bsd_to_linux_sigaltstack(int bsa) 92{ 93 int lsa = 0; 94 95 if (bsa & SS_DISABLE) 96 lsa |= LINUX_SS_DISABLE; 97 if (bsa & SS_ONSTACK) 98 lsa |= LINUX_SS_ONSTACK; 99 return (lsa); 100} 101 102int 103linux_execve(struct thread *td, struct linux_execve_args *args) 104{ 105 struct execve_args bsd; 106 caddr_t sg; 107 108 sg = stackgap_init(); 109 CHECKALTEXIST(td, &sg, args->path); 110 111#ifdef DEBUG 112 if (ldebug(execve)) 113 printf(ARGS(execve, "%s"), args->path); 114#endif 115 116 bsd.fname = args->path; 117 bsd.argv = args->argp; 118 bsd.envv = args->envp; 119 return (execve(td, &bsd)); 120} 121 122struct l_ipc_kludge { 123 struct l_msgbuf *msgp; 124 l_long msgtyp; 125}; 126 127int 128linux_ipc(struct thread *td, struct linux_ipc_args *args) 129{ 130 131 switch (args->what & 0xFFFF) { 132 case LINUX_SEMOP: { 133 struct linux_semop_args a; 134 135 a.semid = args->arg1; 136 a.tsops = args->ptr; 137 a.nsops = args->arg2; 138 return (linux_semop(td, &a)); 139 } 140 case LINUX_SEMGET: { 141 struct linux_semget_args a; 142 143 a.key = args->arg1; 144 a.nsems = args->arg2; 145 a.semflg = args->arg3; 146 return (linux_semget(td, &a)); 147 } 148 case LINUX_SEMCTL: { 149 struct linux_semctl_args a; 150 int error; 151 152 a.semid = args->arg1; 153 a.semnum = args->arg2; 154 a.cmd = args->arg3; 155 error = copyin(args->ptr, &a.arg, sizeof(a.arg)); 156 if (error) 157 return (error); 158 return (linux_semctl(td, &a)); 159 } 160 case LINUX_MSGSND: { 161 struct linux_msgsnd_args a; 162 163 a.msqid = args->arg1; 164 a.msgp = args->ptr; 165 a.msgsz = args->arg2; 166 a.msgflg = args->arg3; 167 return (linux_msgsnd(td, &a)); 168 } 169 case LINUX_MSGRCV: { 170 struct linux_msgrcv_args a; 171 172 a.msqid = args->arg1; 173 a.msgsz = args->arg2; 174 a.msgflg = args->arg3; 175 if ((args->what >> 16) == 0) { 176 struct l_ipc_kludge tmp; 177 int error; 178 179 if (args->ptr == NULL) 180 return (EINVAL); 181 error = copyin(args->ptr, &tmp, sizeof(tmp)); 182 if (error) 183 return (error); 184 a.msgp = tmp.msgp; 185 a.msgtyp = tmp.msgtyp; 186 } else { 187 a.msgp = args->ptr; 188 a.msgtyp = args->arg5; 189 } 190 return (linux_msgrcv(td, &a)); 191 } 192 case LINUX_MSGGET: { 193 struct linux_msgget_args a; 194 195 a.key = args->arg1; 196 a.msgflg = args->arg2; 197 return (linux_msgget(td, &a)); 198 } 199 case LINUX_MSGCTL: { 200 struct linux_msgctl_args a; 201 202 a.msqid = args->arg1; 203 a.cmd = args->arg2; 204 a.buf = args->ptr; 205 return (linux_msgctl(td, &a)); 206 } 207 case LINUX_SHMAT: { 208 struct linux_shmat_args a; 209 210 a.shmid = args->arg1; 211 a.shmaddr = args->ptr; 212 a.shmflg = args->arg2; 213 a.raddr = (l_ulong *)args->arg3; 214 return (linux_shmat(td, &a)); 215 } 216 case LINUX_SHMDT: { 217 struct linux_shmdt_args a; 218 219 a.shmaddr = args->ptr; 220 return (linux_shmdt(td, &a)); 221 } 222 case LINUX_SHMGET: { 223 struct linux_shmget_args a; 224 225 a.key = args->arg1; 226 a.size = args->arg2; 227 a.shmflg = args->arg3; 228 return (linux_shmget(td, &a)); 229 } 230 case LINUX_SHMCTL: { 231 struct linux_shmctl_args a; 232 233 a.shmid = args->arg1; 234 a.cmd = args->arg2; 235 a.buf = args->ptr; 236 return (linux_shmctl(td, &a)); 237 } 238 default: 239 break; 240 } 241 242 return (EINVAL); 243} 244 245int 246linux_old_select(struct thread *td, struct linux_old_select_args *args) 247{ 248 struct l_old_select_argv linux_args; 249 struct linux_select_args newsel; 250 int error; 251 252#ifdef DEBUG 253 if (ldebug(old_select)) 254 printf(ARGS(old_select, "%p"), args->ptr); 255#endif 256 257 error = copyin(args->ptr, &linux_args, sizeof(linux_args)); 258 if (error) 259 return (error); 260 261 newsel.nfds = linux_args.nfds; 262 newsel.readfds = linux_args.readfds; 263 newsel.writefds = linux_args.writefds; 264 newsel.exceptfds = linux_args.exceptfds; 265 newsel.timeout = linux_args.timeout; 266 return (linux_select(td, &newsel)); 267} 268 269int 270linux_fork(struct thread *td, struct linux_fork_args *args) 271{ 272 int error; 273 274#ifdef DEBUG 275 if (ldebug(fork)) 276 printf(ARGS(fork, "")); 277#endif 278 279 if ((error = fork(td, (struct fork_args *)args)) != 0) 280 return (error); 281 282 if (td->td_retval[1] == 1) 283 td->td_retval[0] = 0; 284 return (0); 285} 286 287int 288linux_vfork(struct thread *td, struct linux_vfork_args *args) 289{ 290 int error; 291 292#ifdef DEBUG 293 if (ldebug(vfork)) 294 printf(ARGS(vfork, "")); 295#endif 296 297 if ((error = vfork(td, (struct vfork_args *)args)) != 0) 298 return (error); 299 /* Are we the child? */ 300 if (td->td_retval[1] == 1) 301 td->td_retval[0] = 0; 302 return (0); 303} 304 305#define CLONE_VM 0x100 306#define CLONE_FS 0x200 307#define CLONE_FILES 0x400 308#define CLONE_SIGHAND 0x800 309#define CLONE_PID 0x1000 310 311int 312linux_clone(struct thread *td, struct linux_clone_args *args) 313{ 314 int error, ff = RFPROC | RFSTOPPED; 315 struct proc *p2; 316 struct thread *td2; 317 int exit_signal; 318 319#ifdef DEBUG 320 if (ldebug(clone)) { 321 printf(ARGS(clone, "flags %x, stack %x"), 322 (unsigned int)args->flags, (unsigned int)args->stack); 323 if (args->flags & CLONE_PID) 324 printf(LMSG("CLONE_PID not yet supported")); 325 } 326#endif 327 328 if (!args->stack) 329 return (EINVAL); 330 331 exit_signal = args->flags & 0x000000ff; 332 if (exit_signal >= LINUX_NSIG) 333 return (EINVAL); 334 335 if (exit_signal <= LINUX_SIGTBLSZ) 336 exit_signal = linux_to_bsd_signal[_SIG_IDX(exit_signal)]; 337 338 if (args->flags & CLONE_VM) 339 ff |= RFMEM; 340 if (args->flags & CLONE_SIGHAND) 341 ff |= RFSIGSHARE; 342 if (!(args->flags & CLONE_FILES)) 343 ff |= RFFDG; 344 345 error = fork1(td, ff, 0, &p2); 346 if (error) 347 return (error); 348 349 350 PROC_LOCK(p2); 351 p2->p_sigparent = exit_signal; 352 PROC_UNLOCK(p2); 353 td2 = FIRST_THREAD_IN_PROC(p2); 354 td2->td_frame->tf_esp = (unsigned int)args->stack; 355 356#ifdef DEBUG 357 if (ldebug(clone)) 358 printf(LMSG("clone: successful rfork to %ld, stack %p sig = %d"), 359 (long)p2->p_pid, args->stack, exit_signal); 360#endif 361 362 /* 363 * Make this runnable after we are finished with it. 364 */ 365 mtx_lock_spin(&sched_lock); 366 TD_SET_CAN_RUN(td2); 367 setrunqueue(td2); 368 mtx_unlock_spin(&sched_lock); 369 370 td->td_retval[0] = p2->p_pid; 371 td->td_retval[1] = 0; 372 return (0); 373} 374 375/* XXX move */ 376struct l_mmap_argv { 377 l_caddr_t addr; 378 l_int len; 379 l_int prot; 380 l_int flags; 381 l_int fd; 382 l_int pos; 383}; 384 385#define STACK_SIZE (2 * 1024 * 1024) 386#define GUARD_SIZE (4 * PAGE_SIZE) 387 388static int linux_mmap_common(struct thread *, struct l_mmap_argv *); 389 390int 391linux_mmap2(struct thread *td, struct linux_mmap2_args *args) 392{ 393 struct l_mmap_argv linux_args; 394 395#ifdef DEBUG 396 if (ldebug(mmap2)) 397 printf(ARGS(mmap2, "%p, %d, %d, 0x%08x, %d, %d"), 398 (void *)args->addr, args->len, args->prot, 399 args->flags, args->fd, args->pgoff); 400#endif 401 402 linux_args.addr = (l_caddr_t)args->addr; 403 linux_args.len = args->len; 404 linux_args.prot = args->prot; 405 linux_args.flags = args->flags; 406 linux_args.fd = args->fd; 407 linux_args.pos = args->pgoff * PAGE_SIZE; 408 409 return (linux_mmap_common(td, &linux_args)); 410} 411 412int 413linux_mmap(struct thread *td, struct linux_mmap_args *args) 414{ 415 int error; 416 struct l_mmap_argv linux_args; 417 418 error = copyin(args->ptr, &linux_args, sizeof(linux_args)); 419 if (error) 420 return (error); 421 422#ifdef DEBUG 423 if (ldebug(mmap)) 424 printf(ARGS(mmap, "%p, %d, %d, 0x%08x, %d, %d"), 425 (void *)linux_args.addr, linux_args.len, linux_args.prot, 426 linux_args.flags, linux_args.fd, linux_args.pos); 427#endif 428 429 return (linux_mmap_common(td, &linux_args)); 430} 431 432static int 433linux_mmap_common(struct thread *td, struct l_mmap_argv *linux_args) 434{ 435 struct proc *p = td->td_proc; 436 struct mmap_args /* { 437 caddr_t addr; 438 size_t len; 439 int prot; 440 int flags; 441 int fd; 442 long pad; 443 off_t pos; 444 } */ bsd_args; 445 int error; 446 447 error = 0; 448 bsd_args.flags = 0; 449 if (linux_args->flags & LINUX_MAP_SHARED) 450 bsd_args.flags |= MAP_SHARED; 451 if (linux_args->flags & LINUX_MAP_PRIVATE) 452 bsd_args.flags |= MAP_PRIVATE; 453 if (linux_args->flags & LINUX_MAP_FIXED) 454 bsd_args.flags |= MAP_FIXED; 455 if (linux_args->flags & LINUX_MAP_ANON) 456 bsd_args.flags |= MAP_ANON; 457 else 458 bsd_args.flags |= MAP_NOSYNC; 459 if (linux_args->flags & LINUX_MAP_GROWSDOWN) { 460 bsd_args.flags |= MAP_STACK; 461 462 /* The linux MAP_GROWSDOWN option does not limit auto 463 * growth of the region. Linux mmap with this option 464 * takes as addr the inital BOS, and as len, the initial 465 * region size. It can then grow down from addr without 466 * limit. However, linux threads has an implicit internal 467 * limit to stack size of STACK_SIZE. Its just not 468 * enforced explicitly in linux. But, here we impose 469 * a limit of (STACK_SIZE - GUARD_SIZE) on the stack 470 * region, since we can do this with our mmap. 471 * 472 * Our mmap with MAP_STACK takes addr as the maximum 473 * downsize limit on BOS, and as len the max size of 474 * the region. It them maps the top SGROWSIZ bytes, 475 * and autgrows the region down, up to the limit 476 * in addr. 477 * 478 * If we don't use the MAP_STACK option, the effect 479 * of this code is to allocate a stack region of a 480 * fixed size of (STACK_SIZE - GUARD_SIZE). 481 */ 482 483 /* This gives us TOS */ 484 bsd_args.addr = linux_args->addr + linux_args->len; 485 486 if (bsd_args.addr > p->p_vmspace->vm_maxsaddr) { 487 /* Some linux apps will attempt to mmap 488 * thread stacks near the top of their 489 * address space. If their TOS is greater 490 * than vm_maxsaddr, vm_map_growstack() 491 * will confuse the thread stack with the 492 * process stack and deliver a SEGV if they 493 * attempt to grow the thread stack past their 494 * current stacksize rlimit. To avoid this, 495 * adjust vm_maxsaddr upwards to reflect 496 * the current stacksize rlimit rather 497 * than the maximum possible stacksize. 498 * It would be better to adjust the 499 * mmap'ed region, but some apps do not check 500 * mmap's return value. 501 */ 502 mtx_assert(&Giant, MA_OWNED); 503 p->p_vmspace->vm_maxsaddr = (char *)USRSTACK - 504 p->p_rlimit[RLIMIT_STACK].rlim_cur; 505 } 506 507 /* This gives us our maximum stack size */ 508 if (linux_args->len > STACK_SIZE - GUARD_SIZE) 509 bsd_args.len = linux_args->len; 510 else 511 bsd_args.len = STACK_SIZE - GUARD_SIZE; 512 513 /* This gives us a new BOS. If we're using VM_STACK, then 514 * mmap will just map the top SGROWSIZ bytes, and let 515 * the stack grow down to the limit at BOS. If we're 516 * not using VM_STACK we map the full stack, since we 517 * don't have a way to autogrow it. 518 */ 519 bsd_args.addr -= bsd_args.len; 520 } else { 521 bsd_args.addr = linux_args->addr; 522 bsd_args.len = linux_args->len; 523 } 524 525 bsd_args.prot = linux_args->prot | PROT_READ; /* always required */ 526 if (linux_args->flags & LINUX_MAP_ANON) 527 bsd_args.fd = -1; 528 else 529 bsd_args.fd = linux_args->fd; 530 bsd_args.pos = linux_args->pos; 531 bsd_args.pad = 0; 532 533#ifdef DEBUG 534 if (ldebug(mmap)) 535 printf("-> %s(%p, %d, %d, 0x%08x, %d, 0x%x)\n", 536 __func__, 537 (void *)bsd_args.addr, bsd_args.len, bsd_args.prot, 538 bsd_args.flags, bsd_args.fd, (int)bsd_args.pos); 539#endif 540 error = mmap(td, &bsd_args); 541#ifdef DEBUG 542 if (ldebug(mmap)) 543 printf("-> %s() return: 0x%x (0x%08x)\n", 544 __func__, error, (u_int)td->td_retval[0]); 545#endif 546 return (error); 547} 548 549int 550linux_pipe(struct thread *td, struct linux_pipe_args *args) 551{ 552 int error; 553 int reg_edx; 554 555#ifdef DEBUG 556 if (ldebug(pipe)) 557 printf(ARGS(pipe, "*")); 558#endif 559 560 reg_edx = td->td_retval[1]; 561 error = pipe(td, 0); 562 if (error) { 563 td->td_retval[1] = reg_edx; 564 return (error); 565 } 566 567 error = copyout(td->td_retval, args->pipefds, 2*sizeof(int)); 568 if (error) { 569 td->td_retval[1] = reg_edx; 570 return (error); 571 } 572 573 td->td_retval[1] = reg_edx; 574 td->td_retval[0] = 0; 575 return (0); 576} 577 578int 579linux_ioperm(struct thread *td, struct linux_ioperm_args *args) 580{ 581 struct sysarch_args sa; 582 struct i386_ioperm_args *iia; 583 caddr_t sg; 584 585 sg = stackgap_init(); 586 iia = stackgap_alloc(&sg, sizeof(struct i386_ioperm_args)); 587 iia->start = args->start; 588 iia->length = args->length; 589 iia->enable = args->enable; 590 sa.op = I386_SET_IOPERM; 591 sa.parms = (char *)iia; 592 return (sysarch(td, &sa)); 593} 594 595int 596linux_iopl(struct thread *td, struct linux_iopl_args *args) 597{ 598 int error; 599 600 if (args->level < 0 || args->level > 3) 601 return (EINVAL); 602 if ((error = suser(td)) != 0) 603 return (error); 604 if ((error = securelevel_gt(td->td_ucred, 0)) != 0) 605 return (error); 606 td->td_frame->tf_eflags = (td->td_frame->tf_eflags & ~PSL_IOPL) | 607 (args->level * (PSL_IOPL / 3)); 608 return (0); 609} 610 611int 612linux_modify_ldt(struct thread *td, struct linux_modify_ldt_args *uap) 613{ 614 int error; 615 caddr_t sg; 616 struct sysarch_args args; 617 struct i386_ldt_args *ldt; 618 struct l_descriptor ld; 619 union descriptor *desc; 620 621 sg = stackgap_init(); 622 623 if (uap->ptr == NULL) 624 return (EINVAL); 625 626 switch (uap->func) { 627 case 0x00: /* read_ldt */ 628 ldt = stackgap_alloc(&sg, sizeof(*ldt)); 629 ldt->start = 0; 630 ldt->descs = uap->ptr; 631 ldt->num = uap->bytecount / sizeof(union descriptor); 632 args.op = I386_GET_LDT; 633 args.parms = (char*)ldt; 634 error = sysarch(td, &args); 635 td->td_retval[0] *= sizeof(union descriptor); 636 break; 637 case 0x01: /* write_ldt */ 638 case 0x11: /* write_ldt */ 639 if (uap->bytecount != sizeof(ld)) 640 return (EINVAL); 641 642 error = copyin(uap->ptr, &ld, sizeof(ld)); 643 if (error) 644 return (error); 645 646 ldt = stackgap_alloc(&sg, sizeof(*ldt)); 647 desc = stackgap_alloc(&sg, sizeof(*desc)); 648 ldt->start = ld.entry_number; 649 ldt->descs = desc; 650 ldt->num = 1; 651 desc->sd.sd_lolimit = (ld.limit & 0x0000ffff); 652 desc->sd.sd_hilimit = (ld.limit & 0x000f0000) >> 16; 653 desc->sd.sd_lobase = (ld.base_addr & 0x00ffffff); 654 desc->sd.sd_hibase = (ld.base_addr & 0xff000000) >> 24; 655 desc->sd.sd_type = SDT_MEMRO | ((ld.read_exec_only ^ 1) << 1) | 656 (ld.contents << 2); 657 desc->sd.sd_dpl = 3; 658 desc->sd.sd_p = (ld.seg_not_present ^ 1); 659 desc->sd.sd_xx = 0; 660 desc->sd.sd_def32 = ld.seg_32bit; 661 desc->sd.sd_gran = ld.limit_in_pages; 662 args.op = I386_SET_LDT; 663 args.parms = (char*)ldt; 664 error = sysarch(td, &args); 665 break; 666 default: 667 error = EINVAL; 668 break; 669 } 670 671 if (error == EOPNOTSUPP) { 672 printf("linux: modify_ldt needs kernel option USER_LDT\n"); 673 error = ENOSYS; 674 } 675 676 return (error); 677} 678 679int 680linux_sigaction(struct thread *td, struct linux_sigaction_args *args) 681{ 682 l_osigaction_t osa; 683 l_sigaction_t act, oact; 684 int error; 685 686#ifdef DEBUG 687 if (ldebug(sigaction)) 688 printf(ARGS(sigaction, "%d, %p, %p"), 689 args->sig, (void *)args->nsa, (void *)args->osa); 690#endif 691 692 if (args->nsa != NULL) { 693 error = copyin(args->nsa, &osa, sizeof(l_osigaction_t)); 694 if (error) 695 return (error); 696 act.lsa_handler = osa.lsa_handler; 697 act.lsa_flags = osa.lsa_flags; 698 act.lsa_restorer = osa.lsa_restorer; 699 LINUX_SIGEMPTYSET(act.lsa_mask); 700 act.lsa_mask.__bits[0] = osa.lsa_mask; 701 } 702 703 error = linux_do_sigaction(td, args->sig, args->nsa ? &act : NULL, 704 args->osa ? &oact : NULL); 705 706 if (args->osa != NULL && !error) { 707 osa.lsa_handler = oact.lsa_handler; 708 osa.lsa_flags = oact.lsa_flags; 709 osa.lsa_restorer = oact.lsa_restorer; 710 osa.lsa_mask = oact.lsa_mask.__bits[0]; 711 error = copyout(&osa, args->osa, sizeof(l_osigaction_t)); 712 } 713 714 return (error); 715} 716 717/* 718 * Linux has two extra args, restart and oldmask. We dont use these, 719 * but it seems that "restart" is actually a context pointer that 720 * enables the signal to happen with a different register set. 721 */ 722int 723linux_sigsuspend(struct thread *td, struct linux_sigsuspend_args *args) 724{ 725 sigset_t sigmask; 726 l_sigset_t mask; 727 728#ifdef DEBUG 729 if (ldebug(sigsuspend)) 730 printf(ARGS(sigsuspend, "%08lx"), (unsigned long)args->mask); 731#endif 732 733 LINUX_SIGEMPTYSET(mask); 734 mask.__bits[0] = args->mask; 735 linux_to_bsd_sigset(&mask, &sigmask); 736 return (kern_sigsuspend(td, sigmask)); 737} 738 739int 740linux_rt_sigsuspend(struct thread *td, struct linux_rt_sigsuspend_args *uap) 741{ 742 l_sigset_t lmask; 743 sigset_t sigmask; 744 int error; 745 746#ifdef DEBUG 747 if (ldebug(rt_sigsuspend)) 748 printf(ARGS(rt_sigsuspend, "%p, %d"), 749 (void *)uap->newset, uap->sigsetsize); 750#endif 751 752 if (uap->sigsetsize != sizeof(l_sigset_t)) 753 return (EINVAL); 754 755 error = copyin(uap->newset, &lmask, sizeof(l_sigset_t)); 756 if (error) 757 return (error); 758 759 linux_to_bsd_sigset(&lmask, &sigmask); 760 return (kern_sigsuspend(td, sigmask)); 761} 762 763int 764linux_pause(struct thread *td, struct linux_pause_args *args) 765{ 766 struct proc *p = td->td_proc; 767 sigset_t sigmask; 768 769#ifdef DEBUG 770 if (ldebug(pause)) 771 printf(ARGS(pause, "")); 772#endif 773 774 PROC_LOCK(p); 775 sigmask = td->td_sigmask; 776 PROC_UNLOCK(p); 777 return (kern_sigsuspend(td, sigmask)); 778} 779 780int 781linux_sigaltstack(struct thread *td, struct linux_sigaltstack_args *uap) 782{ 783 stack_t ss, oss; 784 l_stack_t lss; 785 int error; 786 787#ifdef DEBUG 788 if (ldebug(sigaltstack)) 789 printf(ARGS(sigaltstack, "%p, %p"), uap->uss, uap->uoss); 790#endif 791 792 if (uap->uss != NULL) { 793 error = copyin(uap->uss, &lss, sizeof(l_stack_t)); 794 if (error) 795 return (error); 796 797 ss.ss_sp = lss.ss_sp; 798 ss.ss_size = lss.ss_size; 799 ss.ss_flags = linux_to_bsd_sigaltstack(lss.ss_flags); 800 } 801 error = kern_sigaltstack(td, (uap->uoss != NULL) ? &oss : NULL, 802 (uap->uss != NULL) ? &ss : NULL); 803 if (!error && uap->uoss != NULL) { 804 lss.ss_sp = oss.ss_sp; 805 lss.ss_size = oss.ss_size; 806 lss.ss_flags = bsd_to_linux_sigaltstack(oss.ss_flags); 807 error = copyout(&lss, uap->uoss, sizeof(l_stack_t)); 808 } 809 810 return (error); 811} 812 813int 814linux_ftruncate64(struct thread *td, struct linux_ftruncate64_args *args) 815{ 816 struct ftruncate_args sa; 817 818#ifdef DEBUG 819 if (ldebug(ftruncate64)) 820 printf(ARGS(ftruncate64, "%u, %jd"), args->fd, 821 (intmax_t)args->length); 822#endif 823 824 sa.fd = args->fd; 825 sa.pad = 0; 826 sa.length = args->length; 827 return ftruncate(td, &sa); 828}
| 32#include <sys/param.h> 33#include <sys/systm.h> 34#include <sys/lock.h> 35#include <sys/mman.h> 36#include <sys/mutex.h> 37#include <sys/proc.h> 38#include <sys/resource.h> 39#include <sys/resourcevar.h> 40#include <sys/syscallsubr.h> 41#include <sys/sysproto.h> 42#include <sys/unistd.h> 43 44#include <machine/frame.h> 45#include <machine/psl.h> 46#include <machine/segments.h> 47#include <machine/sysarch.h> 48 49#include <vm/vm.h> 50#include <vm/pmap.h> 51#include <vm/vm_map.h> 52 53#include <i386/linux/linux.h> 54#include <i386/linux/linux_proto.h> 55#include <compat/linux/linux_ipc.h> 56#include <compat/linux/linux_signal.h> 57#include <compat/linux/linux_util.h> 58 59struct l_descriptor { 60 l_uint entry_number; 61 l_ulong base_addr; 62 l_uint limit; 63 l_uint seg_32bit:1; 64 l_uint contents:2; 65 l_uint read_exec_only:1; 66 l_uint limit_in_pages:1; 67 l_uint seg_not_present:1; 68 l_uint useable:1; 69}; 70 71struct l_old_select_argv { 72 l_int nfds; 73 l_fd_set *readfds; 74 l_fd_set *writefds; 75 l_fd_set *exceptfds; 76 struct l_timeval *timeout; 77}; 78 79int 80linux_to_bsd_sigaltstack(int lsa) 81{ 82 int bsa = 0; 83 84 if (lsa & LINUX_SS_DISABLE) 85 bsa |= SS_DISABLE; 86 if (lsa & LINUX_SS_ONSTACK) 87 bsa |= SS_ONSTACK; 88 return (bsa); 89} 90 91int 92bsd_to_linux_sigaltstack(int bsa) 93{ 94 int lsa = 0; 95 96 if (bsa & SS_DISABLE) 97 lsa |= LINUX_SS_DISABLE; 98 if (bsa & SS_ONSTACK) 99 lsa |= LINUX_SS_ONSTACK; 100 return (lsa); 101} 102 103int 104linux_execve(struct thread *td, struct linux_execve_args *args) 105{ 106 struct execve_args bsd; 107 caddr_t sg; 108 109 sg = stackgap_init(); 110 CHECKALTEXIST(td, &sg, args->path); 111 112#ifdef DEBUG 113 if (ldebug(execve)) 114 printf(ARGS(execve, "%s"), args->path); 115#endif 116 117 bsd.fname = args->path; 118 bsd.argv = args->argp; 119 bsd.envv = args->envp; 120 return (execve(td, &bsd)); 121} 122 123struct l_ipc_kludge { 124 struct l_msgbuf *msgp; 125 l_long msgtyp; 126}; 127 128int 129linux_ipc(struct thread *td, struct linux_ipc_args *args) 130{ 131 132 switch (args->what & 0xFFFF) { 133 case LINUX_SEMOP: { 134 struct linux_semop_args a; 135 136 a.semid = args->arg1; 137 a.tsops = args->ptr; 138 a.nsops = args->arg2; 139 return (linux_semop(td, &a)); 140 } 141 case LINUX_SEMGET: { 142 struct linux_semget_args a; 143 144 a.key = args->arg1; 145 a.nsems = args->arg2; 146 a.semflg = args->arg3; 147 return (linux_semget(td, &a)); 148 } 149 case LINUX_SEMCTL: { 150 struct linux_semctl_args a; 151 int error; 152 153 a.semid = args->arg1; 154 a.semnum = args->arg2; 155 a.cmd = args->arg3; 156 error = copyin(args->ptr, &a.arg, sizeof(a.arg)); 157 if (error) 158 return (error); 159 return (linux_semctl(td, &a)); 160 } 161 case LINUX_MSGSND: { 162 struct linux_msgsnd_args a; 163 164 a.msqid = args->arg1; 165 a.msgp = args->ptr; 166 a.msgsz = args->arg2; 167 a.msgflg = args->arg3; 168 return (linux_msgsnd(td, &a)); 169 } 170 case LINUX_MSGRCV: { 171 struct linux_msgrcv_args a; 172 173 a.msqid = args->arg1; 174 a.msgsz = args->arg2; 175 a.msgflg = args->arg3; 176 if ((args->what >> 16) == 0) { 177 struct l_ipc_kludge tmp; 178 int error; 179 180 if (args->ptr == NULL) 181 return (EINVAL); 182 error = copyin(args->ptr, &tmp, sizeof(tmp)); 183 if (error) 184 return (error); 185 a.msgp = tmp.msgp; 186 a.msgtyp = tmp.msgtyp; 187 } else { 188 a.msgp = args->ptr; 189 a.msgtyp = args->arg5; 190 } 191 return (linux_msgrcv(td, &a)); 192 } 193 case LINUX_MSGGET: { 194 struct linux_msgget_args a; 195 196 a.key = args->arg1; 197 a.msgflg = args->arg2; 198 return (linux_msgget(td, &a)); 199 } 200 case LINUX_MSGCTL: { 201 struct linux_msgctl_args a; 202 203 a.msqid = args->arg1; 204 a.cmd = args->arg2; 205 a.buf = args->ptr; 206 return (linux_msgctl(td, &a)); 207 } 208 case LINUX_SHMAT: { 209 struct linux_shmat_args a; 210 211 a.shmid = args->arg1; 212 a.shmaddr = args->ptr; 213 a.shmflg = args->arg2; 214 a.raddr = (l_ulong *)args->arg3; 215 return (linux_shmat(td, &a)); 216 } 217 case LINUX_SHMDT: { 218 struct linux_shmdt_args a; 219 220 a.shmaddr = args->ptr; 221 return (linux_shmdt(td, &a)); 222 } 223 case LINUX_SHMGET: { 224 struct linux_shmget_args a; 225 226 a.key = args->arg1; 227 a.size = args->arg2; 228 a.shmflg = args->arg3; 229 return (linux_shmget(td, &a)); 230 } 231 case LINUX_SHMCTL: { 232 struct linux_shmctl_args a; 233 234 a.shmid = args->arg1; 235 a.cmd = args->arg2; 236 a.buf = args->ptr; 237 return (linux_shmctl(td, &a)); 238 } 239 default: 240 break; 241 } 242 243 return (EINVAL); 244} 245 246int 247linux_old_select(struct thread *td, struct linux_old_select_args *args) 248{ 249 struct l_old_select_argv linux_args; 250 struct linux_select_args newsel; 251 int error; 252 253#ifdef DEBUG 254 if (ldebug(old_select)) 255 printf(ARGS(old_select, "%p"), args->ptr); 256#endif 257 258 error = copyin(args->ptr, &linux_args, sizeof(linux_args)); 259 if (error) 260 return (error); 261 262 newsel.nfds = linux_args.nfds; 263 newsel.readfds = linux_args.readfds; 264 newsel.writefds = linux_args.writefds; 265 newsel.exceptfds = linux_args.exceptfds; 266 newsel.timeout = linux_args.timeout; 267 return (linux_select(td, &newsel)); 268} 269 270int 271linux_fork(struct thread *td, struct linux_fork_args *args) 272{ 273 int error; 274 275#ifdef DEBUG 276 if (ldebug(fork)) 277 printf(ARGS(fork, "")); 278#endif 279 280 if ((error = fork(td, (struct fork_args *)args)) != 0) 281 return (error); 282 283 if (td->td_retval[1] == 1) 284 td->td_retval[0] = 0; 285 return (0); 286} 287 288int 289linux_vfork(struct thread *td, struct linux_vfork_args *args) 290{ 291 int error; 292 293#ifdef DEBUG 294 if (ldebug(vfork)) 295 printf(ARGS(vfork, "")); 296#endif 297 298 if ((error = vfork(td, (struct vfork_args *)args)) != 0) 299 return (error); 300 /* Are we the child? */ 301 if (td->td_retval[1] == 1) 302 td->td_retval[0] = 0; 303 return (0); 304} 305 306#define CLONE_VM 0x100 307#define CLONE_FS 0x200 308#define CLONE_FILES 0x400 309#define CLONE_SIGHAND 0x800 310#define CLONE_PID 0x1000 311 312int 313linux_clone(struct thread *td, struct linux_clone_args *args) 314{ 315 int error, ff = RFPROC | RFSTOPPED; 316 struct proc *p2; 317 struct thread *td2; 318 int exit_signal; 319 320#ifdef DEBUG 321 if (ldebug(clone)) { 322 printf(ARGS(clone, "flags %x, stack %x"), 323 (unsigned int)args->flags, (unsigned int)args->stack); 324 if (args->flags & CLONE_PID) 325 printf(LMSG("CLONE_PID not yet supported")); 326 } 327#endif 328 329 if (!args->stack) 330 return (EINVAL); 331 332 exit_signal = args->flags & 0x000000ff; 333 if (exit_signal >= LINUX_NSIG) 334 return (EINVAL); 335 336 if (exit_signal <= LINUX_SIGTBLSZ) 337 exit_signal = linux_to_bsd_signal[_SIG_IDX(exit_signal)]; 338 339 if (args->flags & CLONE_VM) 340 ff |= RFMEM; 341 if (args->flags & CLONE_SIGHAND) 342 ff |= RFSIGSHARE; 343 if (!(args->flags & CLONE_FILES)) 344 ff |= RFFDG; 345 346 error = fork1(td, ff, 0, &p2); 347 if (error) 348 return (error); 349 350 351 PROC_LOCK(p2); 352 p2->p_sigparent = exit_signal; 353 PROC_UNLOCK(p2); 354 td2 = FIRST_THREAD_IN_PROC(p2); 355 td2->td_frame->tf_esp = (unsigned int)args->stack; 356 357#ifdef DEBUG 358 if (ldebug(clone)) 359 printf(LMSG("clone: successful rfork to %ld, stack %p sig = %d"), 360 (long)p2->p_pid, args->stack, exit_signal); 361#endif 362 363 /* 364 * Make this runnable after we are finished with it. 365 */ 366 mtx_lock_spin(&sched_lock); 367 TD_SET_CAN_RUN(td2); 368 setrunqueue(td2); 369 mtx_unlock_spin(&sched_lock); 370 371 td->td_retval[0] = p2->p_pid; 372 td->td_retval[1] = 0; 373 return (0); 374} 375 376/* XXX move */ 377struct l_mmap_argv { 378 l_caddr_t addr; 379 l_int len; 380 l_int prot; 381 l_int flags; 382 l_int fd; 383 l_int pos; 384}; 385 386#define STACK_SIZE (2 * 1024 * 1024) 387#define GUARD_SIZE (4 * PAGE_SIZE) 388 389static int linux_mmap_common(struct thread *, struct l_mmap_argv *); 390 391int 392linux_mmap2(struct thread *td, struct linux_mmap2_args *args) 393{ 394 struct l_mmap_argv linux_args; 395 396#ifdef DEBUG 397 if (ldebug(mmap2)) 398 printf(ARGS(mmap2, "%p, %d, %d, 0x%08x, %d, %d"), 399 (void *)args->addr, args->len, args->prot, 400 args->flags, args->fd, args->pgoff); 401#endif 402 403 linux_args.addr = (l_caddr_t)args->addr; 404 linux_args.len = args->len; 405 linux_args.prot = args->prot; 406 linux_args.flags = args->flags; 407 linux_args.fd = args->fd; 408 linux_args.pos = args->pgoff * PAGE_SIZE; 409 410 return (linux_mmap_common(td, &linux_args)); 411} 412 413int 414linux_mmap(struct thread *td, struct linux_mmap_args *args) 415{ 416 int error; 417 struct l_mmap_argv linux_args; 418 419 error = copyin(args->ptr, &linux_args, sizeof(linux_args)); 420 if (error) 421 return (error); 422 423#ifdef DEBUG 424 if (ldebug(mmap)) 425 printf(ARGS(mmap, "%p, %d, %d, 0x%08x, %d, %d"), 426 (void *)linux_args.addr, linux_args.len, linux_args.prot, 427 linux_args.flags, linux_args.fd, linux_args.pos); 428#endif 429 430 return (linux_mmap_common(td, &linux_args)); 431} 432 433static int 434linux_mmap_common(struct thread *td, struct l_mmap_argv *linux_args) 435{ 436 struct proc *p = td->td_proc; 437 struct mmap_args /* { 438 caddr_t addr; 439 size_t len; 440 int prot; 441 int flags; 442 int fd; 443 long pad; 444 off_t pos; 445 } */ bsd_args; 446 int error; 447 448 error = 0; 449 bsd_args.flags = 0; 450 if (linux_args->flags & LINUX_MAP_SHARED) 451 bsd_args.flags |= MAP_SHARED; 452 if (linux_args->flags & LINUX_MAP_PRIVATE) 453 bsd_args.flags |= MAP_PRIVATE; 454 if (linux_args->flags & LINUX_MAP_FIXED) 455 bsd_args.flags |= MAP_FIXED; 456 if (linux_args->flags & LINUX_MAP_ANON) 457 bsd_args.flags |= MAP_ANON; 458 else 459 bsd_args.flags |= MAP_NOSYNC; 460 if (linux_args->flags & LINUX_MAP_GROWSDOWN) { 461 bsd_args.flags |= MAP_STACK; 462 463 /* The linux MAP_GROWSDOWN option does not limit auto 464 * growth of the region. Linux mmap with this option 465 * takes as addr the inital BOS, and as len, the initial 466 * region size. It can then grow down from addr without 467 * limit. However, linux threads has an implicit internal 468 * limit to stack size of STACK_SIZE. Its just not 469 * enforced explicitly in linux. But, here we impose 470 * a limit of (STACK_SIZE - GUARD_SIZE) on the stack 471 * region, since we can do this with our mmap. 472 * 473 * Our mmap with MAP_STACK takes addr as the maximum 474 * downsize limit on BOS, and as len the max size of 475 * the region. It them maps the top SGROWSIZ bytes, 476 * and autgrows the region down, up to the limit 477 * in addr. 478 * 479 * If we don't use the MAP_STACK option, the effect 480 * of this code is to allocate a stack region of a 481 * fixed size of (STACK_SIZE - GUARD_SIZE). 482 */ 483 484 /* This gives us TOS */ 485 bsd_args.addr = linux_args->addr + linux_args->len; 486 487 if (bsd_args.addr > p->p_vmspace->vm_maxsaddr) { 488 /* Some linux apps will attempt to mmap 489 * thread stacks near the top of their 490 * address space. If their TOS is greater 491 * than vm_maxsaddr, vm_map_growstack() 492 * will confuse the thread stack with the 493 * process stack and deliver a SEGV if they 494 * attempt to grow the thread stack past their 495 * current stacksize rlimit. To avoid this, 496 * adjust vm_maxsaddr upwards to reflect 497 * the current stacksize rlimit rather 498 * than the maximum possible stacksize. 499 * It would be better to adjust the 500 * mmap'ed region, but some apps do not check 501 * mmap's return value. 502 */ 503 mtx_assert(&Giant, MA_OWNED); 504 p->p_vmspace->vm_maxsaddr = (char *)USRSTACK - 505 p->p_rlimit[RLIMIT_STACK].rlim_cur; 506 } 507 508 /* This gives us our maximum stack size */ 509 if (linux_args->len > STACK_SIZE - GUARD_SIZE) 510 bsd_args.len = linux_args->len; 511 else 512 bsd_args.len = STACK_SIZE - GUARD_SIZE; 513 514 /* This gives us a new BOS. If we're using VM_STACK, then 515 * mmap will just map the top SGROWSIZ bytes, and let 516 * the stack grow down to the limit at BOS. If we're 517 * not using VM_STACK we map the full stack, since we 518 * don't have a way to autogrow it. 519 */ 520 bsd_args.addr -= bsd_args.len; 521 } else { 522 bsd_args.addr = linux_args->addr; 523 bsd_args.len = linux_args->len; 524 } 525 526 bsd_args.prot = linux_args->prot | PROT_READ; /* always required */ 527 if (linux_args->flags & LINUX_MAP_ANON) 528 bsd_args.fd = -1; 529 else 530 bsd_args.fd = linux_args->fd; 531 bsd_args.pos = linux_args->pos; 532 bsd_args.pad = 0; 533 534#ifdef DEBUG 535 if (ldebug(mmap)) 536 printf("-> %s(%p, %d, %d, 0x%08x, %d, 0x%x)\n", 537 __func__, 538 (void *)bsd_args.addr, bsd_args.len, bsd_args.prot, 539 bsd_args.flags, bsd_args.fd, (int)bsd_args.pos); 540#endif 541 error = mmap(td, &bsd_args); 542#ifdef DEBUG 543 if (ldebug(mmap)) 544 printf("-> %s() return: 0x%x (0x%08x)\n", 545 __func__, error, (u_int)td->td_retval[0]); 546#endif 547 return (error); 548} 549 550int 551linux_pipe(struct thread *td, struct linux_pipe_args *args) 552{ 553 int error; 554 int reg_edx; 555 556#ifdef DEBUG 557 if (ldebug(pipe)) 558 printf(ARGS(pipe, "*")); 559#endif 560 561 reg_edx = td->td_retval[1]; 562 error = pipe(td, 0); 563 if (error) { 564 td->td_retval[1] = reg_edx; 565 return (error); 566 } 567 568 error = copyout(td->td_retval, args->pipefds, 2*sizeof(int)); 569 if (error) { 570 td->td_retval[1] = reg_edx; 571 return (error); 572 } 573 574 td->td_retval[1] = reg_edx; 575 td->td_retval[0] = 0; 576 return (0); 577} 578 579int 580linux_ioperm(struct thread *td, struct linux_ioperm_args *args) 581{ 582 struct sysarch_args sa; 583 struct i386_ioperm_args *iia; 584 caddr_t sg; 585 586 sg = stackgap_init(); 587 iia = stackgap_alloc(&sg, sizeof(struct i386_ioperm_args)); 588 iia->start = args->start; 589 iia->length = args->length; 590 iia->enable = args->enable; 591 sa.op = I386_SET_IOPERM; 592 sa.parms = (char *)iia; 593 return (sysarch(td, &sa)); 594} 595 596int 597linux_iopl(struct thread *td, struct linux_iopl_args *args) 598{ 599 int error; 600 601 if (args->level < 0 || args->level > 3) 602 return (EINVAL); 603 if ((error = suser(td)) != 0) 604 return (error); 605 if ((error = securelevel_gt(td->td_ucred, 0)) != 0) 606 return (error); 607 td->td_frame->tf_eflags = (td->td_frame->tf_eflags & ~PSL_IOPL) | 608 (args->level * (PSL_IOPL / 3)); 609 return (0); 610} 611 612int 613linux_modify_ldt(struct thread *td, struct linux_modify_ldt_args *uap) 614{ 615 int error; 616 caddr_t sg; 617 struct sysarch_args args; 618 struct i386_ldt_args *ldt; 619 struct l_descriptor ld; 620 union descriptor *desc; 621 622 sg = stackgap_init(); 623 624 if (uap->ptr == NULL) 625 return (EINVAL); 626 627 switch (uap->func) { 628 case 0x00: /* read_ldt */ 629 ldt = stackgap_alloc(&sg, sizeof(*ldt)); 630 ldt->start = 0; 631 ldt->descs = uap->ptr; 632 ldt->num = uap->bytecount / sizeof(union descriptor); 633 args.op = I386_GET_LDT; 634 args.parms = (char*)ldt; 635 error = sysarch(td, &args); 636 td->td_retval[0] *= sizeof(union descriptor); 637 break; 638 case 0x01: /* write_ldt */ 639 case 0x11: /* write_ldt */ 640 if (uap->bytecount != sizeof(ld)) 641 return (EINVAL); 642 643 error = copyin(uap->ptr, &ld, sizeof(ld)); 644 if (error) 645 return (error); 646 647 ldt = stackgap_alloc(&sg, sizeof(*ldt)); 648 desc = stackgap_alloc(&sg, sizeof(*desc)); 649 ldt->start = ld.entry_number; 650 ldt->descs = desc; 651 ldt->num = 1; 652 desc->sd.sd_lolimit = (ld.limit & 0x0000ffff); 653 desc->sd.sd_hilimit = (ld.limit & 0x000f0000) >> 16; 654 desc->sd.sd_lobase = (ld.base_addr & 0x00ffffff); 655 desc->sd.sd_hibase = (ld.base_addr & 0xff000000) >> 24; 656 desc->sd.sd_type = SDT_MEMRO | ((ld.read_exec_only ^ 1) << 1) | 657 (ld.contents << 2); 658 desc->sd.sd_dpl = 3; 659 desc->sd.sd_p = (ld.seg_not_present ^ 1); 660 desc->sd.sd_xx = 0; 661 desc->sd.sd_def32 = ld.seg_32bit; 662 desc->sd.sd_gran = ld.limit_in_pages; 663 args.op = I386_SET_LDT; 664 args.parms = (char*)ldt; 665 error = sysarch(td, &args); 666 break; 667 default: 668 error = EINVAL; 669 break; 670 } 671 672 if (error == EOPNOTSUPP) { 673 printf("linux: modify_ldt needs kernel option USER_LDT\n"); 674 error = ENOSYS; 675 } 676 677 return (error); 678} 679 680int 681linux_sigaction(struct thread *td, struct linux_sigaction_args *args) 682{ 683 l_osigaction_t osa; 684 l_sigaction_t act, oact; 685 int error; 686 687#ifdef DEBUG 688 if (ldebug(sigaction)) 689 printf(ARGS(sigaction, "%d, %p, %p"), 690 args->sig, (void *)args->nsa, (void *)args->osa); 691#endif 692 693 if (args->nsa != NULL) { 694 error = copyin(args->nsa, &osa, sizeof(l_osigaction_t)); 695 if (error) 696 return (error); 697 act.lsa_handler = osa.lsa_handler; 698 act.lsa_flags = osa.lsa_flags; 699 act.lsa_restorer = osa.lsa_restorer; 700 LINUX_SIGEMPTYSET(act.lsa_mask); 701 act.lsa_mask.__bits[0] = osa.lsa_mask; 702 } 703 704 error = linux_do_sigaction(td, args->sig, args->nsa ? &act : NULL, 705 args->osa ? &oact : NULL); 706 707 if (args->osa != NULL && !error) { 708 osa.lsa_handler = oact.lsa_handler; 709 osa.lsa_flags = oact.lsa_flags; 710 osa.lsa_restorer = oact.lsa_restorer; 711 osa.lsa_mask = oact.lsa_mask.__bits[0]; 712 error = copyout(&osa, args->osa, sizeof(l_osigaction_t)); 713 } 714 715 return (error); 716} 717 718/* 719 * Linux has two extra args, restart and oldmask. We dont use these, 720 * but it seems that "restart" is actually a context pointer that 721 * enables the signal to happen with a different register set. 722 */ 723int 724linux_sigsuspend(struct thread *td, struct linux_sigsuspend_args *args) 725{ 726 sigset_t sigmask; 727 l_sigset_t mask; 728 729#ifdef DEBUG 730 if (ldebug(sigsuspend)) 731 printf(ARGS(sigsuspend, "%08lx"), (unsigned long)args->mask); 732#endif 733 734 LINUX_SIGEMPTYSET(mask); 735 mask.__bits[0] = args->mask; 736 linux_to_bsd_sigset(&mask, &sigmask); 737 return (kern_sigsuspend(td, sigmask)); 738} 739 740int 741linux_rt_sigsuspend(struct thread *td, struct linux_rt_sigsuspend_args *uap) 742{ 743 l_sigset_t lmask; 744 sigset_t sigmask; 745 int error; 746 747#ifdef DEBUG 748 if (ldebug(rt_sigsuspend)) 749 printf(ARGS(rt_sigsuspend, "%p, %d"), 750 (void *)uap->newset, uap->sigsetsize); 751#endif 752 753 if (uap->sigsetsize != sizeof(l_sigset_t)) 754 return (EINVAL); 755 756 error = copyin(uap->newset, &lmask, sizeof(l_sigset_t)); 757 if (error) 758 return (error); 759 760 linux_to_bsd_sigset(&lmask, &sigmask); 761 return (kern_sigsuspend(td, sigmask)); 762} 763 764int 765linux_pause(struct thread *td, struct linux_pause_args *args) 766{ 767 struct proc *p = td->td_proc; 768 sigset_t sigmask; 769 770#ifdef DEBUG 771 if (ldebug(pause)) 772 printf(ARGS(pause, "")); 773#endif 774 775 PROC_LOCK(p); 776 sigmask = td->td_sigmask; 777 PROC_UNLOCK(p); 778 return (kern_sigsuspend(td, sigmask)); 779} 780 781int 782linux_sigaltstack(struct thread *td, struct linux_sigaltstack_args *uap) 783{ 784 stack_t ss, oss; 785 l_stack_t lss; 786 int error; 787 788#ifdef DEBUG 789 if (ldebug(sigaltstack)) 790 printf(ARGS(sigaltstack, "%p, %p"), uap->uss, uap->uoss); 791#endif 792 793 if (uap->uss != NULL) { 794 error = copyin(uap->uss, &lss, sizeof(l_stack_t)); 795 if (error) 796 return (error); 797 798 ss.ss_sp = lss.ss_sp; 799 ss.ss_size = lss.ss_size; 800 ss.ss_flags = linux_to_bsd_sigaltstack(lss.ss_flags); 801 } 802 error = kern_sigaltstack(td, (uap->uoss != NULL) ? &oss : NULL, 803 (uap->uss != NULL) ? &ss : NULL); 804 if (!error && uap->uoss != NULL) { 805 lss.ss_sp = oss.ss_sp; 806 lss.ss_size = oss.ss_size; 807 lss.ss_flags = bsd_to_linux_sigaltstack(oss.ss_flags); 808 error = copyout(&lss, uap->uoss, sizeof(l_stack_t)); 809 } 810 811 return (error); 812} 813 814int 815linux_ftruncate64(struct thread *td, struct linux_ftruncate64_args *args) 816{ 817 struct ftruncate_args sa; 818 819#ifdef DEBUG 820 if (ldebug(ftruncate64)) 821 printf(ARGS(ftruncate64, "%u, %jd"), args->fd, 822 (intmax_t)args->length); 823#endif 824 825 sa.fd = args->fd; 826 sa.pad = 0; 827 sa.length = args->length; 828 return ftruncate(td, &sa); 829}
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