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