1 /*- 2 * Copyright (c) 2002 Doug Rabson 3 * Copyright (c) 1994-1995 S�ren Schmidt 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer 11 * in this position and unchanged. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 __FBSDID("$FreeBSD$"); 32 33 #include "opt_compat.h" 34 #include "opt_mac.h" 35 36 #include <sys/param.h> 37 #include <sys/blist.h> 38 #include <sys/fcntl.h> 39 #if defined(__i386__) 40 #include <sys/imgact_aout.h> 41 #endif 42 #include <sys/jail.h> 43 #include <sys/kernel.h> 44 #include <sys/limits.h> 45 #include <sys/lock.h> 46 #include <sys/malloc.h> 47 #include <sys/mman.h> 48 #include <sys/mount.h> 49 #include <sys/mutex.h> 50 #include <sys/namei.h> 51 #include <sys/priv.h> 52 #include <sys/proc.h> 53 #include <sys/reboot.h> 54 #include <sys/resourcevar.h> 55 #include <sys/sched.h> 56 #include <sys/signalvar.h> 57 #include <sys/stat.h> 58 #include <sys/syscallsubr.h> 59 #include <sys/sysctl.h> 60 #include <sys/sysproto.h> 61 #include <sys/systm.h> 62 #include <sys/time.h> 63 #include <sys/vmmeter.h> 64 #include <sys/vnode.h> 65 #include <sys/wait.h> 66 #include <sys/cpuset.h> 67 68 #include <security/mac/mac_framework.h> 69 70 #include <vm/vm.h> 71 #include <vm/pmap.h> 72 #include <vm/vm_kern.h> 73 #include <vm/vm_map.h> 74 #include <vm/vm_extern.h> 75 #include <vm/vm_object.h> 76 #include <vm/swap_pager.h> 77 78 #include <compat/linux/linux_sysproto.h> 79 #include <compat/linux/linux_emul.h> 80 #include <compat/linux/linux_misc.h> 81 82 #ifdef COMPAT_LINUX32 83 #include <machine/../linux32/linux.h> 84 #include <machine/../linux32/linux32_proto.h> 85 #else 86 #include <machine/../linux/linux.h> 87 #include <machine/../linux/linux_proto.h> 88 #endif 89 90 #include <compat/linux/linux_file.h> 91 #include <compat/linux/linux_mib.h> 92 #include <compat/linux/linux_signal.h> 93 #include <compat/linux/linux_util.h> 94 95 #ifdef __i386__ 96 #include <machine/cputypes.h> 97 #endif 98 99 #define BSD_TO_LINUX_SIGNAL(sig) \ 100 (((sig) <= LINUX_SIGTBLSZ) ? bsd_to_linux_signal[_SIG_IDX(sig)] : sig) 101 102 static unsigned int linux_to_bsd_resource[LINUX_RLIM_NLIMITS] = { 103 RLIMIT_CPU, RLIMIT_FSIZE, RLIMIT_DATA, RLIMIT_STACK, 104 RLIMIT_CORE, RLIMIT_RSS, RLIMIT_NPROC, RLIMIT_NOFILE, 105 RLIMIT_MEMLOCK, RLIMIT_AS 106 }; 107 108 struct l_sysinfo { 109 l_long uptime; /* Seconds since boot */ 110 l_ulong loads[3]; /* 1, 5, and 15 minute load averages */ 111 #define LINUX_SYSINFO_LOADS_SCALE 65536 112 l_ulong totalram; /* Total usable main memory size */ 113 l_ulong freeram; /* Available memory size */ 114 l_ulong sharedram; /* Amount of shared memory */ 115 l_ulong bufferram; /* Memory used by buffers */ 116 l_ulong totalswap; /* Total swap space size */ 117 l_ulong freeswap; /* swap space still available */ 118 l_ushort procs; /* Number of current processes */ 119 l_ushort pads; 120 l_ulong totalbig; 121 l_ulong freebig; 122 l_uint mem_unit; 123 char _f[20-2*sizeof(l_long)-sizeof(l_int)]; /* padding */ 124 }; 125 int 126 linux_sysinfo(struct thread *td, struct linux_sysinfo_args *args) 127 { 128 struct l_sysinfo sysinfo; 129 vm_object_t object; 130 int i, j; 131 struct timespec ts; 132 133 getnanouptime(&ts); 134 if (ts.tv_nsec != 0) 135 ts.tv_sec++; 136 sysinfo.uptime = ts.tv_sec; 137 138 /* Use the information from the mib to get our load averages */ 139 for (i = 0; i < 3; i++) 140 sysinfo.loads[i] = averunnable.ldavg[i] * 141 LINUX_SYSINFO_LOADS_SCALE / averunnable.fscale; 142 143 sysinfo.totalram = physmem * PAGE_SIZE; 144 sysinfo.freeram = sysinfo.totalram - cnt.v_wire_count * PAGE_SIZE; 145 146 sysinfo.sharedram = 0; 147 mtx_lock(&vm_object_list_mtx); 148 TAILQ_FOREACH(object, &vm_object_list, object_list) 149 if (object->shadow_count > 1) 150 sysinfo.sharedram += object->resident_page_count; 151 mtx_unlock(&vm_object_list_mtx); 152 153 sysinfo.sharedram *= PAGE_SIZE; 154 sysinfo.bufferram = 0; 155 156 swap_pager_status(&i, &j); 157 sysinfo.totalswap = i * PAGE_SIZE; 158 sysinfo.freeswap = (i - j) * PAGE_SIZE; 159 160 sysinfo.procs = nprocs; 161 162 /* The following are only present in newer Linux kernels. */ 163 sysinfo.totalbig = 0; 164 sysinfo.freebig = 0; 165 sysinfo.mem_unit = 1; 166 167 return copyout(&sysinfo, args->info, sizeof(sysinfo)); 168 } 169 170 int 171 linux_alarm(struct thread *td, struct linux_alarm_args *args) 172 { 173 struct itimerval it, old_it; 174 int error; 175 176 #ifdef DEBUG 177 if (ldebug(alarm)) 178 printf(ARGS(alarm, "%u"), args->secs); 179 #endif 180 181 if (args->secs > 100000000) 182 return (EINVAL); 183 184 it.it_value.tv_sec = (long)args->secs; 185 it.it_value.tv_usec = 0; 186 it.it_interval.tv_sec = 0; 187 it.it_interval.tv_usec = 0; 188 error = kern_setitimer(td, ITIMER_REAL, &it, &old_it); 189 if (error) 190 return (error); 191 if (timevalisset(&old_it.it_value)) { 192 if (old_it.it_value.tv_usec != 0) 193 old_it.it_value.tv_sec++; 194 td->td_retval[0] = old_it.it_value.tv_sec; 195 } 196 return (0); 197 } 198 199 int 200 linux_brk(struct thread *td, struct linux_brk_args *args) 201 { 202 struct vmspace *vm = td->td_proc->p_vmspace; 203 vm_offset_t new, old; 204 struct obreak_args /* { 205 char * nsize; 206 } */ tmp; 207 208 #ifdef DEBUG 209 if (ldebug(brk)) 210 printf(ARGS(brk, "%p"), (void *)(uintptr_t)args->dsend); 211 #endif 212 old = (vm_offset_t)vm->vm_daddr + ctob(vm->vm_dsize); 213 new = (vm_offset_t)args->dsend; 214 tmp.nsize = (char *)new; 215 if (((caddr_t)new > vm->vm_daddr) && !obreak(td, &tmp)) 216 td->td_retval[0] = (long)new; 217 else 218 td->td_retval[0] = (long)old; 219 220 return 0; 221 } 222 223 #if defined(__i386__) 224 /* XXX: what about amd64/linux32? */ 225 226 int 227 linux_uselib(struct thread *td, struct linux_uselib_args *args) 228 { 229 struct nameidata ni; 230 struct vnode *vp; 231 struct exec *a_out; 232 struct vattr attr; 233 vm_offset_t vmaddr; 234 unsigned long file_offset; 235 vm_offset_t buffer; 236 unsigned long bss_size; 237 char *library; 238 int error; 239 int locked, vfslocked; 240 241 LCONVPATHEXIST(td, args->library, &library); 242 243 #ifdef DEBUG 244 if (ldebug(uselib)) 245 printf(ARGS(uselib, "%s"), library); 246 #endif 247 248 a_out = NULL; 249 vfslocked = 0; 250 locked = 0; 251 vp = NULL; 252 253 NDINIT(&ni, LOOKUP, ISOPEN | FOLLOW | LOCKLEAF | MPSAFE | AUDITVNODE1, 254 UIO_SYSSPACE, library, td); 255 error = namei(&ni); 256 LFREEPATH(library); 257 if (error) 258 goto cleanup; 259 260 vp = ni.ni_vp; 261 vfslocked = NDHASGIANT(&ni); 262 NDFREE(&ni, NDF_ONLY_PNBUF); 263 264 /* 265 * From here on down, we have a locked vnode that must be unlocked. 266 * XXX: The code below largely duplicates exec_check_permissions(). 267 */ 268 locked = 1; 269 270 /* Writable? */ 271 if (vp->v_writecount) { 272 error = ETXTBSY; 273 goto cleanup; 274 } 275 276 /* Executable? */ 277 error = VOP_GETATTR(vp, &attr, td->td_ucred, td); 278 if (error) 279 goto cleanup; 280 281 if ((vp->v_mount->mnt_flag & MNT_NOEXEC) || 282 ((attr.va_mode & 0111) == 0) || (attr.va_type != VREG)) { 283 /* EACCESS is what exec(2) returns. */ 284 error = ENOEXEC; 285 goto cleanup; 286 } 287 288 /* Sensible size? */ 289 if (attr.va_size == 0) { 290 error = ENOEXEC; 291 goto cleanup; 292 } 293 294 /* Can we access it? */ 295 error = VOP_ACCESS(vp, VEXEC, td->td_ucred, td); 296 if (error) 297 goto cleanup; 298 299 /* 300 * XXX: This should use vn_open() so that it is properly authorized, 301 * and to reduce code redundancy all over the place here. 302 * XXX: Not really, it duplicates far more of exec_check_permissions() 303 * than vn_open(). 304 */ 305 #ifdef MAC 306 error = mac_vnode_check_open(td->td_ucred, vp, FREAD); 307 if (error) 308 goto cleanup; 309 #endif 310 error = VOP_OPEN(vp, FREAD, td->td_ucred, td, NULL); 311 if (error) 312 goto cleanup; 313 314 /* Pull in executable header into kernel_map */ 315 error = vm_mmap(kernel_map, (vm_offset_t *)&a_out, PAGE_SIZE, 316 VM_PROT_READ, VM_PROT_READ, 0, OBJT_VNODE, vp, 0); 317 if (error) 318 goto cleanup; 319 320 /* Is it a Linux binary ? */ 321 if (((a_out->a_magic >> 16) & 0xff) != 0x64) { 322 error = ENOEXEC; 323 goto cleanup; 324 } 325 326 /* 327 * While we are here, we should REALLY do some more checks 328 */ 329 330 /* Set file/virtual offset based on a.out variant. */ 331 switch ((int)(a_out->a_magic & 0xffff)) { 332 case 0413: /* ZMAGIC */ 333 file_offset = 1024; 334 break; 335 case 0314: /* QMAGIC */ 336 file_offset = 0; 337 break; 338 default: 339 error = ENOEXEC; 340 goto cleanup; 341 } 342 343 bss_size = round_page(a_out->a_bss); 344 345 /* Check various fields in header for validity/bounds. */ 346 if (a_out->a_text & PAGE_MASK || a_out->a_data & PAGE_MASK) { 347 error = ENOEXEC; 348 goto cleanup; 349 } 350 351 /* text + data can't exceed file size */ 352 if (a_out->a_data + a_out->a_text > attr.va_size) { 353 error = EFAULT; 354 goto cleanup; 355 } 356 357 /* 358 * text/data/bss must not exceed limits 359 * XXX - this is not complete. it should check current usage PLUS 360 * the resources needed by this library. 361 */ 362 PROC_LOCK(td->td_proc); 363 if (a_out->a_text > maxtsiz || 364 a_out->a_data + bss_size > lim_cur(td->td_proc, RLIMIT_DATA)) { 365 PROC_UNLOCK(td->td_proc); 366 error = ENOMEM; 367 goto cleanup; 368 } 369 PROC_UNLOCK(td->td_proc); 370 371 /* 372 * Prevent more writers. 373 * XXX: Note that if any of the VM operations fail below we don't 374 * clear this flag. 375 */ 376 vp->v_vflag |= VV_TEXT; 377 378 /* 379 * Lock no longer needed 380 */ 381 locked = 0; 382 VOP_UNLOCK(vp, 0); 383 VFS_UNLOCK_GIANT(vfslocked); 384 385 /* 386 * Check if file_offset page aligned. Currently we cannot handle 387 * misalinged file offsets, and so we read in the entire image 388 * (what a waste). 389 */ 390 if (file_offset & PAGE_MASK) { 391 #ifdef DEBUG 392 printf("uselib: Non page aligned binary %lu\n", file_offset); 393 #endif 394 /* Map text+data read/write/execute */ 395 396 /* a_entry is the load address and is page aligned */ 397 vmaddr = trunc_page(a_out->a_entry); 398 399 /* get anon user mapping, read+write+execute */ 400 error = vm_map_find(&td->td_proc->p_vmspace->vm_map, NULL, 0, 401 &vmaddr, a_out->a_text + a_out->a_data, FALSE, VM_PROT_ALL, 402 VM_PROT_ALL, 0); 403 if (error) 404 goto cleanup; 405 406 /* map file into kernel_map */ 407 error = vm_mmap(kernel_map, &buffer, 408 round_page(a_out->a_text + a_out->a_data + file_offset), 409 VM_PROT_READ, VM_PROT_READ, 0, OBJT_VNODE, vp, 410 trunc_page(file_offset)); 411 if (error) 412 goto cleanup; 413 414 /* copy from kernel VM space to user space */ 415 error = copyout(PTRIN(buffer + file_offset), 416 (void *)vmaddr, a_out->a_text + a_out->a_data); 417 418 /* release temporary kernel space */ 419 vm_map_remove(kernel_map, buffer, buffer + 420 round_page(a_out->a_text + a_out->a_data + file_offset)); 421 422 if (error) 423 goto cleanup; 424 } else { 425 #ifdef DEBUG 426 printf("uselib: Page aligned binary %lu\n", file_offset); 427 #endif 428 /* 429 * for QMAGIC, a_entry is 20 bytes beyond the load address 430 * to skip the executable header 431 */ 432 vmaddr = trunc_page(a_out->a_entry); 433 434 /* 435 * Map it all into the process's space as a single 436 * copy-on-write "data" segment. 437 */ 438 error = vm_mmap(&td->td_proc->p_vmspace->vm_map, &vmaddr, 439 a_out->a_text + a_out->a_data, VM_PROT_ALL, VM_PROT_ALL, 440 MAP_PRIVATE | MAP_FIXED, OBJT_VNODE, vp, file_offset); 441 if (error) 442 goto cleanup; 443 } 444 #ifdef DEBUG 445 printf("mem=%08lx = %08lx %08lx\n", (long)vmaddr, ((long *)vmaddr)[0], 446 ((long *)vmaddr)[1]); 447 #endif 448 if (bss_size != 0) { 449 /* Calculate BSS start address */ 450 vmaddr = trunc_page(a_out->a_entry) + a_out->a_text + 451 a_out->a_data; 452 453 /* allocate some 'anon' space */ 454 error = vm_map_find(&td->td_proc->p_vmspace->vm_map, NULL, 0, 455 &vmaddr, bss_size, FALSE, VM_PROT_ALL, VM_PROT_ALL, 0); 456 if (error) 457 goto cleanup; 458 } 459 460 cleanup: 461 /* Unlock vnode if needed */ 462 if (locked) { 463 VOP_UNLOCK(vp, 0); 464 VFS_UNLOCK_GIANT(vfslocked); 465 } 466 467 /* Release the kernel mapping. */ 468 if (a_out) 469 vm_map_remove(kernel_map, (vm_offset_t)a_out, 470 (vm_offset_t)a_out + PAGE_SIZE); 471 472 return error; 473 } 474 475 #endif /* __i386__ */ 476 477 int 478 linux_select(struct thread *td, struct linux_select_args *args) 479 { 480 l_timeval ltv; 481 struct timeval tv0, tv1, utv, *tvp; 482 int error; 483 484 #ifdef DEBUG 485 if (ldebug(select)) 486 printf(ARGS(select, "%d, %p, %p, %p, %p"), args->nfds, 487 (void *)args->readfds, (void *)args->writefds, 488 (void *)args->exceptfds, (void *)args->timeout); 489 #endif 490 491 /* 492 * Store current time for computation of the amount of 493 * time left. 494 */ 495 if (args->timeout) { 496 if ((error = copyin(args->timeout, <v, sizeof(ltv)))) 497 goto select_out; 498 utv.tv_sec = ltv.tv_sec; 499 utv.tv_usec = ltv.tv_usec; 500 #ifdef DEBUG 501 if (ldebug(select)) 502 printf(LMSG("incoming timeout (%jd/%ld)"), 503 (intmax_t)utv.tv_sec, utv.tv_usec); 504 #endif 505 506 if (itimerfix(&utv)) { 507 /* 508 * The timeval was invalid. Convert it to something 509 * valid that will act as it does under Linux. 510 */ 511 utv.tv_sec += utv.tv_usec / 1000000; 512 utv.tv_usec %= 1000000; 513 if (utv.tv_usec < 0) { 514 utv.tv_sec -= 1; 515 utv.tv_usec += 1000000; 516 } 517 if (utv.tv_sec < 0) 518 timevalclear(&utv); 519 } 520 microtime(&tv0); 521 tvp = &utv; 522 } else 523 tvp = NULL; 524 525 error = kern_select(td, args->nfds, args->readfds, args->writefds, 526 args->exceptfds, tvp); 527 528 #ifdef DEBUG 529 if (ldebug(select)) 530 printf(LMSG("real select returns %d"), error); 531 #endif 532 if (error) { 533 /* 534 * See fs/select.c in the Linux kernel. Without this, 535 * Maelstrom doesn't work. 536 */ 537 if (error == ERESTART) 538 error = EINTR; 539 goto select_out; 540 } 541 542 if (args->timeout) { 543 if (td->td_retval[0]) { 544 /* 545 * Compute how much time was left of the timeout, 546 * by subtracting the current time and the time 547 * before we started the call, and subtracting 548 * that result from the user-supplied value. 549 */ 550 microtime(&tv1); 551 timevalsub(&tv1, &tv0); 552 timevalsub(&utv, &tv1); 553 if (utv.tv_sec < 0) 554 timevalclear(&utv); 555 } else 556 timevalclear(&utv); 557 #ifdef DEBUG 558 if (ldebug(select)) 559 printf(LMSG("outgoing timeout (%jd/%ld)"), 560 (intmax_t)utv.tv_sec, utv.tv_usec); 561 #endif 562 ltv.tv_sec = utv.tv_sec; 563 ltv.tv_usec = utv.tv_usec; 564 if ((error = copyout(<v, args->timeout, sizeof(ltv)))) 565 goto select_out; 566 } 567 568 select_out: 569 #ifdef DEBUG 570 if (ldebug(select)) 571 printf(LMSG("select_out -> %d"), error); 572 #endif 573 return error; 574 } 575 576 int 577 linux_mremap(struct thread *td, struct linux_mremap_args *args) 578 { 579 struct munmap_args /* { 580 void *addr; 581 size_t len; 582 } */ bsd_args; 583 int error = 0; 584 585 #ifdef DEBUG 586 if (ldebug(mremap)) 587 printf(ARGS(mremap, "%p, %08lx, %08lx, %08lx"), 588 (void *)(uintptr_t)args->addr, 589 (unsigned long)args->old_len, 590 (unsigned long)args->new_len, 591 (unsigned long)args->flags); 592 #endif 593 594 if (args->flags & ~(LINUX_MREMAP_FIXED | LINUX_MREMAP_MAYMOVE)) { 595 td->td_retval[0] = 0; 596 return (EINVAL); 597 } 598 599 /* 600 * Check for the page alignment. 601 * Linux defines PAGE_MASK to be FreeBSD ~PAGE_MASK. 602 */ 603 if (args->addr & PAGE_MASK) { 604 td->td_retval[0] = 0; 605 return (EINVAL); 606 } 607 608 args->new_len = round_page(args->new_len); 609 args->old_len = round_page(args->old_len); 610 611 if (args->new_len > args->old_len) { 612 td->td_retval[0] = 0; 613 return ENOMEM; 614 } 615 616 if (args->new_len < args->old_len) { 617 bsd_args.addr = 618 (caddr_t)((uintptr_t)args->addr + args->new_len); 619 bsd_args.len = args->old_len - args->new_len; 620 error = munmap(td, &bsd_args); 621 } 622 623 td->td_retval[0] = error ? 0 : (uintptr_t)args->addr; 624 return error; 625 } 626 627 #define LINUX_MS_ASYNC 0x0001 628 #define LINUX_MS_INVALIDATE 0x0002 629 #define LINUX_MS_SYNC 0x0004 630 631 int 632 linux_msync(struct thread *td, struct linux_msync_args *args) 633 { 634 struct msync_args bsd_args; 635 636 bsd_args.addr = (caddr_t)(uintptr_t)args->addr; 637 bsd_args.len = (uintptr_t)args->len; 638 bsd_args.flags = args->fl & ~LINUX_MS_SYNC; 639 640 return msync(td, &bsd_args); 641 } 642 643 int 644 linux_time(struct thread *td, struct linux_time_args *args) 645 { 646 struct timeval tv; 647 l_time_t tm; 648 int error; 649 650 #ifdef DEBUG 651 if (ldebug(time)) 652 printf(ARGS(time, "*")); 653 #endif 654 655 microtime(&tv); 656 tm = tv.tv_sec; 657 if (args->tm && (error = copyout(&tm, args->tm, sizeof(tm)))) 658 return error; 659 td->td_retval[0] = tm; 660 return 0; 661 } 662 663 struct l_times_argv { 664 l_long tms_utime; 665 l_long tms_stime; 666 l_long tms_cutime; 667 l_long tms_cstime; 668 }; 669 670 #define CLK_TCK 100 /* Linux uses 100 */ 671 672 #define CONVTCK(r) (r.tv_sec * CLK_TCK + r.tv_usec / (1000000 / CLK_TCK)) 673 674 int 675 linux_times(struct thread *td, struct linux_times_args *args) 676 { 677 struct timeval tv, utime, stime, cutime, cstime; 678 struct l_times_argv tms; 679 struct proc *p; 680 int error; 681 682 #ifdef DEBUG 683 if (ldebug(times)) 684 printf(ARGS(times, "*")); 685 #endif 686 687 if (args->buf != NULL) { 688 p = td->td_proc; 689 PROC_LOCK(p); 690 PROC_SLOCK(p); 691 calcru(p, &utime, &stime); 692 PROC_SUNLOCK(p); 693 calccru(p, &cutime, &cstime); 694 PROC_UNLOCK(p); 695 696 tms.tms_utime = CONVTCK(utime); 697 tms.tms_stime = CONVTCK(stime); 698 699 tms.tms_cutime = CONVTCK(cutime); 700 tms.tms_cstime = CONVTCK(cstime); 701 702 if ((error = copyout(&tms, args->buf, sizeof(tms)))) 703 return error; 704 } 705 706 microuptime(&tv); 707 td->td_retval[0] = (int)CONVTCK(tv); 708 return 0; 709 } 710 711 int 712 linux_newuname(struct thread *td, struct linux_newuname_args *args) 713 { 714 struct l_new_utsname utsname; 715 char osname[LINUX_MAX_UTSNAME]; 716 char osrelease[LINUX_MAX_UTSNAME]; 717 char *p; 718 719 #ifdef DEBUG 720 if (ldebug(newuname)) 721 printf(ARGS(newuname, "*")); 722 #endif 723 724 linux_get_osname(td, osname); 725 linux_get_osrelease(td, osrelease); 726 727 bzero(&utsname, sizeof(utsname)); 728 strlcpy(utsname.sysname, osname, LINUX_MAX_UTSNAME); 729 getcredhostname(td->td_ucred, utsname.nodename, LINUX_MAX_UTSNAME); 730 strlcpy(utsname.release, osrelease, LINUX_MAX_UTSNAME); 731 strlcpy(utsname.version, version, LINUX_MAX_UTSNAME); 732 for (p = utsname.version; *p != '\0'; ++p) 733 if (*p == '\n') { 734 *p = '\0'; 735 break; 736 } 737 #ifdef __i386__ 738 { 739 const char *class; 740 741 switch (cpu_class) { 742 case CPUCLASS_686: 743 class = "i686"; 744 break; 745 case CPUCLASS_586: 746 class = "i586"; 747 break; 748 case CPUCLASS_486: 749 class = "i486"; 750 break; 751 default: 752 class = "i386"; 753 } 754 strlcpy(utsname.machine, class, LINUX_MAX_UTSNAME); 755 } 756 #elif defined(__amd64__) /* XXX: Linux can change 'personality'. */ 757 #ifdef COMPAT_LINUX32 758 strlcpy(utsname.machine, "i686", LINUX_MAX_UTSNAME); 759 #else 760 strlcpy(utsname.machine, "x86_64", LINUX_MAX_UTSNAME); 761 #endif /* COMPAT_LINUX32 */ 762 #else /* something other than i386 or amd64 - assume we and Linux agree */ 763 strlcpy(utsname.machine, machine, LINUX_MAX_UTSNAME); 764 #endif /* __i386__ */ 765 strlcpy(utsname.domainname, domainname, LINUX_MAX_UTSNAME); 766 767 return (copyout(&utsname, args->buf, sizeof(utsname))); 768 } 769 770 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) 771 struct l_utimbuf { 772 l_time_t l_actime; 773 l_time_t l_modtime; 774 }; 775 776 int 777 linux_utime(struct thread *td, struct linux_utime_args *args) 778 { 779 struct timeval tv[2], *tvp; 780 struct l_utimbuf lut; 781 char *fname; 782 int error; 783 784 LCONVPATHEXIST(td, args->fname, &fname); 785 786 #ifdef DEBUG 787 if (ldebug(utime)) 788 printf(ARGS(utime, "%s, *"), fname); 789 #endif 790 791 if (args->times) { 792 if ((error = copyin(args->times, &lut, sizeof lut))) { 793 LFREEPATH(fname); 794 return error; 795 } 796 tv[0].tv_sec = lut.l_actime; 797 tv[0].tv_usec = 0; 798 tv[1].tv_sec = lut.l_modtime; 799 tv[1].tv_usec = 0; 800 tvp = tv; 801 } else 802 tvp = NULL; 803 804 error = kern_utimes(td, fname, UIO_SYSSPACE, tvp, UIO_SYSSPACE); 805 LFREEPATH(fname); 806 return (error); 807 } 808 809 int 810 linux_utimes(struct thread *td, struct linux_utimes_args *args) 811 { 812 l_timeval ltv[2]; 813 struct timeval tv[2], *tvp = NULL; 814 char *fname; 815 int error; 816 817 LCONVPATHEXIST(td, args->fname, &fname); 818 819 #ifdef DEBUG 820 if (ldebug(utimes)) 821 printf(ARGS(utimes, "%s, *"), fname); 822 #endif 823 824 if (args->tptr != NULL) { 825 if ((error = copyin(args->tptr, ltv, sizeof ltv))) { 826 LFREEPATH(fname); 827 return (error); 828 } 829 tv[0].tv_sec = ltv[0].tv_sec; 830 tv[0].tv_usec = ltv[0].tv_usec; 831 tv[1].tv_sec = ltv[1].tv_sec; 832 tv[1].tv_usec = ltv[1].tv_usec; 833 tvp = tv; 834 } 835 836 error = kern_utimes(td, fname, UIO_SYSSPACE, tvp, UIO_SYSSPACE); 837 LFREEPATH(fname); 838 return (error); 839 } 840 841 int 842 linux_futimesat(struct thread *td, struct linux_futimesat_args *args) 843 { 844 l_timeval ltv[2]; 845 struct timeval tv[2], *tvp = NULL; 846 char *fname; 847 int error, dfd; 848 849 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 850 LCONVPATHEXIST_AT(td, args->filename, &fname, dfd); 851 852 #ifdef DEBUG 853 if (ldebug(futimesat)) 854 printf(ARGS(futimesat, "%s, *"), fname); 855 #endif 856 857 if (args->utimes != NULL) { 858 if ((error = copyin(args->utimes, ltv, sizeof ltv))) { 859 LFREEPATH(fname); 860 return (error); 861 } 862 tv[0].tv_sec = ltv[0].tv_sec; 863 tv[0].tv_usec = ltv[0].tv_usec; 864 tv[1].tv_sec = ltv[1].tv_sec; 865 tv[1].tv_usec = ltv[1].tv_usec; 866 tvp = tv; 867 } 868 869 error = kern_utimesat(td, dfd, fname, UIO_SYSSPACE, tvp, UIO_SYSSPACE); 870 LFREEPATH(fname); 871 return (error); 872 } 873 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */ 874 875 #define __WCLONE 0x80000000 876 877 int 878 linux_waitpid(struct thread *td, struct linux_waitpid_args *args) 879 { 880 int error, options, tmpstat; 881 882 #ifdef DEBUG 883 if (ldebug(waitpid)) 884 printf(ARGS(waitpid, "%d, %p, %d"), 885 args->pid, (void *)args->status, args->options); 886 #endif 887 /* 888 * this is necessary because the test in kern_wait doesn't work 889 * because we mess with the options here 890 */ 891 if (args->options & ~(WUNTRACED | WNOHANG | WCONTINUED | __WCLONE)) 892 return (EINVAL); 893 894 options = (args->options & (WNOHANG | WUNTRACED)); 895 /* WLINUXCLONE should be equal to __WCLONE, but we make sure */ 896 if (args->options & __WCLONE) 897 options |= WLINUXCLONE; 898 899 error = kern_wait(td, args->pid, &tmpstat, options, NULL); 900 if (error) 901 return error; 902 903 if (args->status) { 904 tmpstat &= 0xffff; 905 if (WIFSIGNALED(tmpstat)) 906 tmpstat = (tmpstat & 0xffffff80) | 907 BSD_TO_LINUX_SIGNAL(WTERMSIG(tmpstat)); 908 else if (WIFSTOPPED(tmpstat)) 909 tmpstat = (tmpstat & 0xffff00ff) | 910 (BSD_TO_LINUX_SIGNAL(WSTOPSIG(tmpstat)) << 8); 911 return copyout(&tmpstat, args->status, sizeof(int)); 912 } 913 914 return 0; 915 } 916 917 int 918 linux_wait4(struct thread *td, struct linux_wait4_args *args) 919 { 920 int error, options, tmpstat; 921 struct rusage ru, *rup; 922 struct proc *p; 923 924 #ifdef DEBUG 925 if (ldebug(wait4)) 926 printf(ARGS(wait4, "%d, %p, %d, %p"), 927 args->pid, (void *)args->status, args->options, 928 (void *)args->rusage); 929 #endif 930 931 options = (args->options & (WNOHANG | WUNTRACED)); 932 /* WLINUXCLONE should be equal to __WCLONE, but we make sure */ 933 if (args->options & __WCLONE) 934 options |= WLINUXCLONE; 935 936 if (args->rusage != NULL) 937 rup = &ru; 938 else 939 rup = NULL; 940 error = kern_wait(td, args->pid, &tmpstat, options, rup); 941 if (error) 942 return error; 943 944 p = td->td_proc; 945 PROC_LOCK(p); 946 sigqueue_delete(&p->p_sigqueue, SIGCHLD); 947 PROC_UNLOCK(p); 948 949 if (args->status) { 950 tmpstat &= 0xffff; 951 if (WIFSIGNALED(tmpstat)) 952 tmpstat = (tmpstat & 0xffffff80) | 953 BSD_TO_LINUX_SIGNAL(WTERMSIG(tmpstat)); 954 else if (WIFSTOPPED(tmpstat)) 955 tmpstat = (tmpstat & 0xffff00ff) | 956 (BSD_TO_LINUX_SIGNAL(WSTOPSIG(tmpstat)) << 8); 957 error = copyout(&tmpstat, args->status, sizeof(int)); 958 } 959 if (args->rusage != NULL && error == 0) 960 error = copyout(&ru, args->rusage, sizeof(ru)); 961 962 return (error); 963 } 964 965 int 966 linux_mknod(struct thread *td, struct linux_mknod_args *args) 967 { 968 char *path; 969 int error; 970 971 LCONVPATHCREAT(td, args->path, &path); 972 973 #ifdef DEBUG 974 if (ldebug(mknod)) 975 printf(ARGS(mknod, "%s, %d, %d"), path, args->mode, args->dev); 976 #endif 977 978 switch (args->mode & S_IFMT) { 979 case S_IFIFO: 980 case S_IFSOCK: 981 error = kern_mkfifo(td, path, UIO_SYSSPACE, args->mode); 982 break; 983 984 case S_IFCHR: 985 case S_IFBLK: 986 error = kern_mknod(td, path, UIO_SYSSPACE, args->mode, 987 args->dev); 988 break; 989 990 case S_IFDIR: 991 error = EPERM; 992 break; 993 994 case 0: 995 args->mode |= S_IFREG; 996 /* FALLTHROUGH */ 997 case S_IFREG: 998 error = kern_open(td, path, UIO_SYSSPACE, 999 O_WRONLY | O_CREAT | O_TRUNC, args->mode); 1000 if (error == 0) 1001 kern_close(td, td->td_retval[0]); 1002 break; 1003 1004 default: 1005 error = EINVAL; 1006 break; 1007 } 1008 LFREEPATH(path); 1009 return (error); 1010 } 1011 1012 int 1013 linux_mknodat(struct thread *td, struct linux_mknodat_args *args) 1014 { 1015 char *path; 1016 int error, dfd; 1017 1018 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd; 1019 LCONVPATHCREAT_AT(td, args->filename, &path, dfd); 1020 1021 #ifdef DEBUG 1022 if (ldebug(mknodat)) 1023 printf(ARGS(mknodat, "%s, %d, %d"), path, args->mode, args->dev); 1024 #endif 1025 1026 switch (args->mode & S_IFMT) { 1027 case S_IFIFO: 1028 case S_IFSOCK: 1029 error = kern_mkfifoat(td, dfd, path, UIO_SYSSPACE, args->mode); 1030 break; 1031 1032 case S_IFCHR: 1033 case S_IFBLK: 1034 error = kern_mknodat(td, dfd, path, UIO_SYSSPACE, args->mode, 1035 args->dev); 1036 break; 1037 1038 case S_IFDIR: 1039 error = EPERM; 1040 break; 1041 1042 case 0: 1043 args->mode |= S_IFREG; 1044 /* FALLTHROUGH */ 1045 case S_IFREG: 1046 error = kern_openat(td, dfd, path, UIO_SYSSPACE, 1047 O_WRONLY | O_CREAT | O_TRUNC, args->mode); 1048 if (error == 0) 1049 kern_close(td, td->td_retval[0]); 1050 break; 1051 1052 default: 1053 error = EINVAL; 1054 break; 1055 } 1056 LFREEPATH(path); 1057 return (error); 1058 } 1059 1060 /* 1061 * UGH! This is just about the dumbest idea I've ever heard!! 1062 */ 1063 int 1064 linux_personality(struct thread *td, struct linux_personality_args *args) 1065 { 1066 #ifdef DEBUG 1067 if (ldebug(personality)) 1068 printf(ARGS(personality, "%lu"), (unsigned long)args->per); 1069 #endif 1070 if (args->per != 0) 1071 return EINVAL; 1072 1073 /* Yes Jim, it's still a Linux... */ 1074 td->td_retval[0] = 0; 1075 return 0; 1076 } 1077 1078 struct l_itimerval { 1079 l_timeval it_interval; 1080 l_timeval it_value; 1081 }; 1082 1083 #define B2L_ITIMERVAL(bip, lip) \ 1084 (bip)->it_interval.tv_sec = (lip)->it_interval.tv_sec; \ 1085 (bip)->it_interval.tv_usec = (lip)->it_interval.tv_usec; \ 1086 (bip)->it_value.tv_sec = (lip)->it_value.tv_sec; \ 1087 (bip)->it_value.tv_usec = (lip)->it_value.tv_usec; 1088 1089 int 1090 linux_setitimer(struct thread *td, struct linux_setitimer_args *uap) 1091 { 1092 int error; 1093 struct l_itimerval ls; 1094 struct itimerval aitv, oitv; 1095 1096 #ifdef DEBUG 1097 if (ldebug(setitimer)) 1098 printf(ARGS(setitimer, "%p, %p"), 1099 (void *)uap->itv, (void *)uap->oitv); 1100 #endif 1101 1102 if (uap->itv == NULL) { 1103 uap->itv = uap->oitv; 1104 return (linux_getitimer(td, (struct linux_getitimer_args *)uap)); 1105 } 1106 1107 error = copyin(uap->itv, &ls, sizeof(ls)); 1108 if (error != 0) 1109 return (error); 1110 B2L_ITIMERVAL(&aitv, &ls); 1111 #ifdef DEBUG 1112 if (ldebug(setitimer)) { 1113 printf("setitimer: value: sec: %jd, usec: %ld\n", 1114 (intmax_t)aitv.it_value.tv_sec, aitv.it_value.tv_usec); 1115 printf("setitimer: interval: sec: %jd, usec: %ld\n", 1116 (intmax_t)aitv.it_interval.tv_sec, aitv.it_interval.tv_usec); 1117 } 1118 #endif 1119 error = kern_setitimer(td, uap->which, &aitv, &oitv); 1120 if (error != 0 || uap->oitv == NULL) 1121 return (error); 1122 B2L_ITIMERVAL(&ls, &oitv); 1123 1124 return (copyout(&ls, uap->oitv, sizeof(ls))); 1125 } 1126 1127 int 1128 linux_getitimer(struct thread *td, struct linux_getitimer_args *uap) 1129 { 1130 int error; 1131 struct l_itimerval ls; 1132 struct itimerval aitv; 1133 1134 #ifdef DEBUG 1135 if (ldebug(getitimer)) 1136 printf(ARGS(getitimer, "%p"), (void *)uap->itv); 1137 #endif 1138 error = kern_getitimer(td, uap->which, &aitv); 1139 if (error != 0) 1140 return (error); 1141 B2L_ITIMERVAL(&ls, &aitv); 1142 return (copyout(&ls, uap->itv, sizeof(ls))); 1143 } 1144 1145 int 1146 linux_nice(struct thread *td, struct linux_nice_args *args) 1147 { 1148 struct setpriority_args bsd_args; 1149 1150 bsd_args.which = PRIO_PROCESS; 1151 bsd_args.who = 0; /* current process */ 1152 bsd_args.prio = args->inc; 1153 return setpriority(td, &bsd_args); 1154 } 1155 1156 int 1157 linux_setgroups(struct thread *td, struct linux_setgroups_args *args) 1158 { 1159 struct ucred *newcred, *oldcred; 1160 l_gid_t linux_gidset[NGROUPS]; 1161 gid_t *bsd_gidset; 1162 int ngrp, error; 1163 struct proc *p; 1164 1165 ngrp = args->gidsetsize; 1166 if (ngrp < 0 || ngrp >= NGROUPS) 1167 return (EINVAL); 1168 error = copyin(args->grouplist, linux_gidset, ngrp * sizeof(l_gid_t)); 1169 if (error) 1170 return (error); 1171 newcred = crget(); 1172 p = td->td_proc; 1173 PROC_LOCK(p); 1174 oldcred = p->p_ucred; 1175 1176 /* 1177 * cr_groups[0] holds egid. Setting the whole set from 1178 * the supplied set will cause egid to be changed too. 1179 * Keep cr_groups[0] unchanged to prevent that. 1180 */ 1181 1182 if ((error = priv_check_cred(oldcred, PRIV_CRED_SETGROUPS, 0)) != 0) { 1183 PROC_UNLOCK(p); 1184 crfree(newcred); 1185 return (error); 1186 } 1187 1188 crcopy(newcred, oldcred); 1189 if (ngrp > 0) { 1190 newcred->cr_ngroups = ngrp + 1; 1191 1192 bsd_gidset = newcred->cr_groups; 1193 ngrp--; 1194 while (ngrp >= 0) { 1195 bsd_gidset[ngrp + 1] = linux_gidset[ngrp]; 1196 ngrp--; 1197 } 1198 } else 1199 newcred->cr_ngroups = 1; 1200 1201 setsugid(p); 1202 p->p_ucred = newcred; 1203 PROC_UNLOCK(p); 1204 crfree(oldcred); 1205 return (0); 1206 } 1207 1208 int 1209 linux_getgroups(struct thread *td, struct linux_getgroups_args *args) 1210 { 1211 struct ucred *cred; 1212 l_gid_t linux_gidset[NGROUPS]; 1213 gid_t *bsd_gidset; 1214 int bsd_gidsetsz, ngrp, error; 1215 1216 cred = td->td_ucred; 1217 bsd_gidset = cred->cr_groups; 1218 bsd_gidsetsz = cred->cr_ngroups - 1; 1219 1220 /* 1221 * cr_groups[0] holds egid. Returning the whole set 1222 * here will cause a duplicate. Exclude cr_groups[0] 1223 * to prevent that. 1224 */ 1225 1226 if ((ngrp = args->gidsetsize) == 0) { 1227 td->td_retval[0] = bsd_gidsetsz; 1228 return (0); 1229 } 1230 1231 if (ngrp < bsd_gidsetsz) 1232 return (EINVAL); 1233 1234 ngrp = 0; 1235 while (ngrp < bsd_gidsetsz) { 1236 linux_gidset[ngrp] = bsd_gidset[ngrp + 1]; 1237 ngrp++; 1238 } 1239 1240 if ((error = copyout(linux_gidset, args->grouplist, 1241 ngrp * sizeof(l_gid_t)))) 1242 return (error); 1243 1244 td->td_retval[0] = ngrp; 1245 return (0); 1246 } 1247 1248 int 1249 linux_setrlimit(struct thread *td, struct linux_setrlimit_args *args) 1250 { 1251 struct rlimit bsd_rlim; 1252 struct l_rlimit rlim; 1253 u_int which; 1254 int error; 1255 1256 #ifdef DEBUG 1257 if (ldebug(setrlimit)) 1258 printf(ARGS(setrlimit, "%d, %p"), 1259 args->resource, (void *)args->rlim); 1260 #endif 1261 1262 if (args->resource >= LINUX_RLIM_NLIMITS) 1263 return (EINVAL); 1264 1265 which = linux_to_bsd_resource[args->resource]; 1266 if (which == -1) 1267 return (EINVAL); 1268 1269 error = copyin(args->rlim, &rlim, sizeof(rlim)); 1270 if (error) 1271 return (error); 1272 1273 bsd_rlim.rlim_cur = (rlim_t)rlim.rlim_cur; 1274 bsd_rlim.rlim_max = (rlim_t)rlim.rlim_max; 1275 return (kern_setrlimit(td, which, &bsd_rlim)); 1276 } 1277 1278 int 1279 linux_old_getrlimit(struct thread *td, struct linux_old_getrlimit_args *args) 1280 { 1281 struct l_rlimit rlim; 1282 struct proc *p = td->td_proc; 1283 struct rlimit bsd_rlim; 1284 u_int which; 1285 1286 #ifdef DEBUG 1287 if (ldebug(old_getrlimit)) 1288 printf(ARGS(old_getrlimit, "%d, %p"), 1289 args->resource, (void *)args->rlim); 1290 #endif 1291 1292 if (args->resource >= LINUX_RLIM_NLIMITS) 1293 return (EINVAL); 1294 1295 which = linux_to_bsd_resource[args->resource]; 1296 if (which == -1) 1297 return (EINVAL); 1298 1299 PROC_LOCK(p); 1300 lim_rlimit(p, which, &bsd_rlim); 1301 PROC_UNLOCK(p); 1302 1303 #ifdef COMPAT_LINUX32 1304 rlim.rlim_cur = (unsigned int)bsd_rlim.rlim_cur; 1305 if (rlim.rlim_cur == UINT_MAX) 1306 rlim.rlim_cur = INT_MAX; 1307 rlim.rlim_max = (unsigned int)bsd_rlim.rlim_max; 1308 if (rlim.rlim_max == UINT_MAX) 1309 rlim.rlim_max = INT_MAX; 1310 #else 1311 rlim.rlim_cur = (unsigned long)bsd_rlim.rlim_cur; 1312 if (rlim.rlim_cur == ULONG_MAX) 1313 rlim.rlim_cur = LONG_MAX; 1314 rlim.rlim_max = (unsigned long)bsd_rlim.rlim_max; 1315 if (rlim.rlim_max == ULONG_MAX) 1316 rlim.rlim_max = LONG_MAX; 1317 #endif 1318 return (copyout(&rlim, args->rlim, sizeof(rlim))); 1319 } 1320 1321 int 1322 linux_getrlimit(struct thread *td, struct linux_getrlimit_args *args) 1323 { 1324 struct l_rlimit rlim; 1325 struct proc *p = td->td_proc; 1326 struct rlimit bsd_rlim; 1327 u_int which; 1328 1329 #ifdef DEBUG 1330 if (ldebug(getrlimit)) 1331 printf(ARGS(getrlimit, "%d, %p"), 1332 args->resource, (void *)args->rlim); 1333 #endif 1334 1335 if (args->resource >= LINUX_RLIM_NLIMITS) 1336 return (EINVAL); 1337 1338 which = linux_to_bsd_resource[args->resource]; 1339 if (which == -1) 1340 return (EINVAL); 1341 1342 PROC_LOCK(p); 1343 lim_rlimit(p, which, &bsd_rlim); 1344 PROC_UNLOCK(p); 1345 1346 rlim.rlim_cur = (l_ulong)bsd_rlim.rlim_cur; 1347 rlim.rlim_max = (l_ulong)bsd_rlim.rlim_max; 1348 return (copyout(&rlim, args->rlim, sizeof(rlim))); 1349 } 1350 1351 int 1352 linux_sched_setscheduler(struct thread *td, 1353 struct linux_sched_setscheduler_args *args) 1354 { 1355 struct sched_setscheduler_args bsd; 1356 1357 #ifdef DEBUG 1358 if (ldebug(sched_setscheduler)) 1359 printf(ARGS(sched_setscheduler, "%d, %d, %p"), 1360 args->pid, args->policy, (const void *)args->param); 1361 #endif 1362 1363 switch (args->policy) { 1364 case LINUX_SCHED_OTHER: 1365 bsd.policy = SCHED_OTHER; 1366 break; 1367 case LINUX_SCHED_FIFO: 1368 bsd.policy = SCHED_FIFO; 1369 break; 1370 case LINUX_SCHED_RR: 1371 bsd.policy = SCHED_RR; 1372 break; 1373 default: 1374 return EINVAL; 1375 } 1376 1377 bsd.pid = args->pid; 1378 bsd.param = (struct sched_param *)args->param; 1379 return sched_setscheduler(td, &bsd); 1380 } 1381 1382 int 1383 linux_sched_getscheduler(struct thread *td, 1384 struct linux_sched_getscheduler_args *args) 1385 { 1386 struct sched_getscheduler_args bsd; 1387 int error; 1388 1389 #ifdef DEBUG 1390 if (ldebug(sched_getscheduler)) 1391 printf(ARGS(sched_getscheduler, "%d"), args->pid); 1392 #endif 1393 1394 bsd.pid = args->pid; 1395 error = sched_getscheduler(td, &bsd); 1396 1397 switch (td->td_retval[0]) { 1398 case SCHED_OTHER: 1399 td->td_retval[0] = LINUX_SCHED_OTHER; 1400 break; 1401 case SCHED_FIFO: 1402 td->td_retval[0] = LINUX_SCHED_FIFO; 1403 break; 1404 case SCHED_RR: 1405 td->td_retval[0] = LINUX_SCHED_RR; 1406 break; 1407 } 1408 1409 return error; 1410 } 1411 1412 int 1413 linux_sched_get_priority_max(struct thread *td, 1414 struct linux_sched_get_priority_max_args *args) 1415 { 1416 struct sched_get_priority_max_args bsd; 1417 1418 #ifdef DEBUG 1419 if (ldebug(sched_get_priority_max)) 1420 printf(ARGS(sched_get_priority_max, "%d"), args->policy); 1421 #endif 1422 1423 switch (args->policy) { 1424 case LINUX_SCHED_OTHER: 1425 bsd.policy = SCHED_OTHER; 1426 break; 1427 case LINUX_SCHED_FIFO: 1428 bsd.policy = SCHED_FIFO; 1429 break; 1430 case LINUX_SCHED_RR: 1431 bsd.policy = SCHED_RR; 1432 break; 1433 default: 1434 return EINVAL; 1435 } 1436 return sched_get_priority_max(td, &bsd); 1437 } 1438 1439 int 1440 linux_sched_get_priority_min(struct thread *td, 1441 struct linux_sched_get_priority_min_args *args) 1442 { 1443 struct sched_get_priority_min_args bsd; 1444 1445 #ifdef DEBUG 1446 if (ldebug(sched_get_priority_min)) 1447 printf(ARGS(sched_get_priority_min, "%d"), args->policy); 1448 #endif 1449 1450 switch (args->policy) { 1451 case LINUX_SCHED_OTHER: 1452 bsd.policy = SCHED_OTHER; 1453 break; 1454 case LINUX_SCHED_FIFO: 1455 bsd.policy = SCHED_FIFO; 1456 break; 1457 case LINUX_SCHED_RR: 1458 bsd.policy = SCHED_RR; 1459 break; 1460 default: 1461 return EINVAL; 1462 } 1463 return sched_get_priority_min(td, &bsd); 1464 } 1465 1466 #define REBOOT_CAD_ON 0x89abcdef 1467 #define REBOOT_CAD_OFF 0 1468 #define REBOOT_HALT 0xcdef0123 1469 #define REBOOT_RESTART 0x01234567 1470 #define REBOOT_RESTART2 0xA1B2C3D4 1471 #define REBOOT_POWEROFF 0x4321FEDC 1472 #define REBOOT_MAGIC1 0xfee1dead 1473 #define REBOOT_MAGIC2 0x28121969 1474 #define REBOOT_MAGIC2A 0x05121996 1475 #define REBOOT_MAGIC2B 0x16041998 1476 1477 int 1478 linux_reboot(struct thread *td, struct linux_reboot_args *args) 1479 { 1480 struct reboot_args bsd_args; 1481 1482 #ifdef DEBUG 1483 if (ldebug(reboot)) 1484 printf(ARGS(reboot, "0x%x"), args->cmd); 1485 #endif 1486 1487 if (args->magic1 != REBOOT_MAGIC1) 1488 return EINVAL; 1489 1490 switch (args->magic2) { 1491 case REBOOT_MAGIC2: 1492 case REBOOT_MAGIC2A: 1493 case REBOOT_MAGIC2B: 1494 break; 1495 default: 1496 return EINVAL; 1497 } 1498 1499 switch (args->cmd) { 1500 case REBOOT_CAD_ON: 1501 case REBOOT_CAD_OFF: 1502 return (priv_check(td, PRIV_REBOOT)); 1503 case REBOOT_HALT: 1504 bsd_args.opt = RB_HALT; 1505 break; 1506 case REBOOT_RESTART: 1507 case REBOOT_RESTART2: 1508 bsd_args.opt = 0; 1509 break; 1510 case REBOOT_POWEROFF: 1511 bsd_args.opt = RB_POWEROFF; 1512 break; 1513 default: 1514 return EINVAL; 1515 } 1516 return reboot(td, &bsd_args); 1517 } 1518 1519 1520 /* 1521 * The FreeBSD native getpid(2), getgid(2) and getuid(2) also modify 1522 * td->td_retval[1] when COMPAT_43 is defined. This clobbers registers that 1523 * are assumed to be preserved. The following lightweight syscalls fixes 1524 * this. See also linux_getgid16() and linux_getuid16() in linux_uid16.c 1525 * 1526 * linux_getpid() - MP SAFE 1527 * linux_getgid() - MP SAFE 1528 * linux_getuid() - MP SAFE 1529 */ 1530 1531 int 1532 linux_getpid(struct thread *td, struct linux_getpid_args *args) 1533 { 1534 struct linux_emuldata *em; 1535 1536 #ifdef DEBUG 1537 if (ldebug(getpid)) 1538 printf(ARGS(getpid, "")); 1539 #endif 1540 1541 if (linux_use26(td)) { 1542 em = em_find(td->td_proc, EMUL_DONTLOCK); 1543 KASSERT(em != NULL, ("getpid: emuldata not found.\n")); 1544 td->td_retval[0] = em->shared->group_pid; 1545 } else { 1546 td->td_retval[0] = td->td_proc->p_pid; 1547 } 1548 1549 return (0); 1550 } 1551 1552 int 1553 linux_gettid(struct thread *td, struct linux_gettid_args *args) 1554 { 1555 1556 #ifdef DEBUG 1557 if (ldebug(gettid)) 1558 printf(ARGS(gettid, "")); 1559 #endif 1560 1561 td->td_retval[0] = td->td_proc->p_pid; 1562 return (0); 1563 } 1564 1565 1566 int 1567 linux_getppid(struct thread *td, struct linux_getppid_args *args) 1568 { 1569 struct linux_emuldata *em; 1570 struct proc *p, *pp; 1571 1572 #ifdef DEBUG 1573 if (ldebug(getppid)) 1574 printf(ARGS(getppid, "")); 1575 #endif 1576 1577 if (!linux_use26(td)) { 1578 PROC_LOCK(td->td_proc); 1579 td->td_retval[0] = td->td_proc->p_pptr->p_pid; 1580 PROC_UNLOCK(td->td_proc); 1581 return (0); 1582 } 1583 1584 em = em_find(td->td_proc, EMUL_DONTLOCK); 1585 1586 KASSERT(em != NULL, ("getppid: process emuldata not found.\n")); 1587 1588 /* find the group leader */ 1589 p = pfind(em->shared->group_pid); 1590 1591 if (p == NULL) { 1592 #ifdef DEBUG 1593 printf(LMSG("parent process not found.\n")); 1594 #endif 1595 return (0); 1596 } 1597 1598 pp = p->p_pptr; /* switch to parent */ 1599 PROC_LOCK(pp); 1600 PROC_UNLOCK(p); 1601 1602 /* if its also linux process */ 1603 if (pp->p_sysent == &elf_linux_sysvec) { 1604 em = em_find(pp, EMUL_DONTLOCK); 1605 KASSERT(em != NULL, ("getppid: parent emuldata not found.\n")); 1606 1607 td->td_retval[0] = em->shared->group_pid; 1608 } else 1609 td->td_retval[0] = pp->p_pid; 1610 1611 PROC_UNLOCK(pp); 1612 1613 return (0); 1614 } 1615 1616 int 1617 linux_getgid(struct thread *td, struct linux_getgid_args *args) 1618 { 1619 1620 #ifdef DEBUG 1621 if (ldebug(getgid)) 1622 printf(ARGS(getgid, "")); 1623 #endif 1624 1625 td->td_retval[0] = td->td_ucred->cr_rgid; 1626 return (0); 1627 } 1628 1629 int 1630 linux_getuid(struct thread *td, struct linux_getuid_args *args) 1631 { 1632 1633 #ifdef DEBUG 1634 if (ldebug(getuid)) 1635 printf(ARGS(getuid, "")); 1636 #endif 1637 1638 td->td_retval[0] = td->td_ucred->cr_ruid; 1639 return (0); 1640 } 1641 1642 1643 int 1644 linux_getsid(struct thread *td, struct linux_getsid_args *args) 1645 { 1646 struct getsid_args bsd; 1647 1648 #ifdef DEBUG 1649 if (ldebug(getsid)) 1650 printf(ARGS(getsid, "%i"), args->pid); 1651 #endif 1652 1653 bsd.pid = args->pid; 1654 return getsid(td, &bsd); 1655 } 1656 1657 int 1658 linux_nosys(struct thread *td, struct nosys_args *ignore) 1659 { 1660 1661 return (ENOSYS); 1662 } 1663 1664 int 1665 linux_getpriority(struct thread *td, struct linux_getpriority_args *args) 1666 { 1667 struct getpriority_args bsd_args; 1668 int error; 1669 1670 #ifdef DEBUG 1671 if (ldebug(getpriority)) 1672 printf(ARGS(getpriority, "%i, %i"), args->which, args->who); 1673 #endif 1674 1675 bsd_args.which = args->which; 1676 bsd_args.who = args->who; 1677 error = getpriority(td, &bsd_args); 1678 td->td_retval[0] = 20 - td->td_retval[0]; 1679 return error; 1680 } 1681 1682 int 1683 linux_sethostname(struct thread *td, struct linux_sethostname_args *args) 1684 { 1685 int name[2]; 1686 1687 #ifdef DEBUG 1688 if (ldebug(sethostname)) 1689 printf(ARGS(sethostname, "*, %i"), args->len); 1690 #endif 1691 1692 name[0] = CTL_KERN; 1693 name[1] = KERN_HOSTNAME; 1694 return (userland_sysctl(td, name, 2, 0, 0, 0, args->hostname, 1695 args->len, 0, 0)); 1696 } 1697 1698 int 1699 linux_exit_group(struct thread *td, struct linux_exit_group_args *args) 1700 { 1701 struct linux_emuldata *em, *td_em, *tmp_em; 1702 struct proc *sp; 1703 1704 #ifdef DEBUG 1705 if (ldebug(exit_group)) 1706 printf(ARGS(exit_group, "%i"), args->error_code); 1707 #endif 1708 1709 if (linux_use26(td)) { 1710 td_em = em_find(td->td_proc, EMUL_DONTLOCK); 1711 1712 KASSERT(td_em != NULL, ("exit_group: emuldata not found.\n")); 1713 1714 EMUL_SHARED_RLOCK(&emul_shared_lock); 1715 LIST_FOREACH_SAFE(em, &td_em->shared->threads, threads, tmp_em) { 1716 if (em->pid == td_em->pid) 1717 continue; 1718 1719 sp = pfind(em->pid); 1720 psignal(sp, SIGKILL); 1721 PROC_UNLOCK(sp); 1722 #ifdef DEBUG 1723 printf(LMSG("linux_sys_exit_group: kill PID %d\n"), em->pid); 1724 #endif 1725 } 1726 1727 EMUL_SHARED_RUNLOCK(&emul_shared_lock); 1728 } 1729 /* 1730 * XXX: we should send a signal to the parent if 1731 * SIGNAL_EXIT_GROUP is set. We ignore that (temporarily?) 1732 * as it doesnt occur often. 1733 */ 1734 exit1(td, W_EXITCODE(args->error_code, 0)); 1735 1736 return (0); 1737 } 1738 1739 int 1740 linux_prctl(struct thread *td, struct linux_prctl_args *args) 1741 { 1742 int error = 0, max_size; 1743 struct proc *p = td->td_proc; 1744 char comm[LINUX_MAX_COMM_LEN]; 1745 struct linux_emuldata *em; 1746 int pdeath_signal; 1747 1748 #ifdef DEBUG 1749 if (ldebug(prctl)) 1750 printf(ARGS(prctl, "%d, %d, %d, %d, %d"), args->option, 1751 args->arg2, args->arg3, args->arg4, args->arg5); 1752 #endif 1753 1754 switch (args->option) { 1755 case LINUX_PR_SET_PDEATHSIG: 1756 if (!LINUX_SIG_VALID(args->arg2)) 1757 return (EINVAL); 1758 em = em_find(p, EMUL_DOLOCK); 1759 KASSERT(em != NULL, ("prctl: emuldata not found.\n")); 1760 em->pdeath_signal = args->arg2; 1761 EMUL_UNLOCK(&emul_lock); 1762 break; 1763 case LINUX_PR_GET_PDEATHSIG: 1764 em = em_find(p, EMUL_DOLOCK); 1765 KASSERT(em != NULL, ("prctl: emuldata not found.\n")); 1766 pdeath_signal = em->pdeath_signal; 1767 EMUL_UNLOCK(&emul_lock); 1768 error = copyout(&pdeath_signal, 1769 (void *)(register_t)args->arg2, 1770 sizeof(pdeath_signal)); 1771 break; 1772 case LINUX_PR_SET_NAME: 1773 /* 1774 * To be on the safe side we need to make sure to not 1775 * overflow the size a linux program expects. We already 1776 * do this here in the copyin, so that we don't need to 1777 * check on copyout. 1778 */ 1779 max_size = MIN(sizeof(comm), sizeof(p->p_comm)); 1780 error = copyinstr((void *)(register_t)args->arg2, comm, 1781 max_size, NULL); 1782 1783 /* Linux silently truncates the name if it is too long. */ 1784 if (error == ENAMETOOLONG) { 1785 /* 1786 * XXX: copyinstr() isn't documented to populate the 1787 * array completely, so do a copyin() to be on the 1788 * safe side. This should be changed in case 1789 * copyinstr() is changed to guarantee this. 1790 */ 1791 error = copyin((void *)(register_t)args->arg2, comm, 1792 max_size - 1); 1793 comm[max_size - 1] = '\0'; 1794 } 1795 if (error) 1796 return (error); 1797 1798 PROC_LOCK(p); 1799 strlcpy(p->p_comm, comm, sizeof(p->p_comm)); 1800 PROC_UNLOCK(p); 1801 break; 1802 case LINUX_PR_GET_NAME: 1803 PROC_LOCK(p); 1804 strlcpy(comm, p->p_comm, sizeof(comm)); 1805 PROC_UNLOCK(p); 1806 error = copyout(comm, (void *)(register_t)args->arg2, 1807 strlen(comm) + 1); 1808 break; 1809 default: 1810 error = EINVAL; 1811 break; 1812 } 1813 1814 return (error); 1815 } 1816 1817 /* 1818 * Get affinity of a process. 1819 */ 1820 int 1821 linux_sched_getaffinity(struct thread *td, 1822 struct linux_sched_getaffinity_args *args) 1823 { 1824 int error; 1825 struct cpuset_getaffinity_args cga; 1826 1827 #ifdef DEBUG 1828 if (ldebug(sched_getaffinity)) 1829 printf(ARGS(sched_getaffinity, "%d, %d, *"), args->pid, 1830 args->len); 1831 #endif 1832 1833 cga.level = CPU_LEVEL_WHICH; 1834 cga.which = CPU_WHICH_PID; 1835 cga.id = args->pid; 1836 cga.cpusetsize = sizeof(cpumask_t); 1837 cga.mask = (cpuset_t *) args->user_mask_ptr; 1838 1839 if ((error = cpuset_getaffinity(td, &cga)) == 0) 1840 td->td_retval[0] = sizeof(cpumask_t); 1841 1842 return (error); 1843 } 1844 1845 /* 1846 * Set affinity of a process. 1847 */ 1848 int 1849 linux_sched_setaffinity(struct thread *td, 1850 struct linux_sched_setaffinity_args *args) 1851 { 1852 struct cpuset_setaffinity_args csa; 1853 1854 #ifdef DEBUG 1855 if (ldebug(sched_setaffinity)) 1856 printf(ARGS(sched_setaffinity, "%d, %d, *"), args->pid, 1857 args->len); 1858 #endif 1859 csa.level = CPU_LEVEL_WHICH; 1860 csa.which = CPU_WHICH_PID; 1861 csa.id = args->pid; 1862 csa.cpusetsize = args->len; 1863 csa.mask = (cpuset_t *) args->user_mask_ptr; 1864 1865 return (cpuset_setaffinity(td, &csa)); 1866 } 1867