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/mac.h> 47 #include <sys/malloc.h> 48 #include <sys/mman.h> 49 #include <sys/mount.h> 50 #include <sys/mutex.h> 51 #include <sys/namei.h> 52 #include <sys/proc.h> 53 #include <sys/reboot.h> 54 #include <sys/resourcevar.h> 55 #include <sys/signalvar.h> 56 #include <sys/stat.h> 57 #include <sys/syscallsubr.h> 58 #include <sys/sysctl.h> 59 #include <sys/sysproto.h> 60 #include <sys/systm.h> 61 #include <sys/time.h> 62 #include <sys/vmmeter.h> 63 #include <sys/vnode.h> 64 #include <sys/wait.h> 65 66 #include <vm/vm.h> 67 #include <vm/pmap.h> 68 #include <vm/vm_kern.h> 69 #include <vm/vm_map.h> 70 #include <vm/vm_extern.h> 71 #include <vm/vm_object.h> 72 #include <vm/swap_pager.h> 73 74 #include <posix4/sched.h> 75 76 #include <compat/linux/linux_sysproto.h> 77 #include <compat/linux/linux_emul.h> 78 79 #ifdef COMPAT_LINUX32 80 #include <machine/../linux32/linux.h> 81 #include <machine/../linux32/linux32_proto.h> 82 #else 83 #include <machine/../linux/linux.h> 84 #include <machine/../linux/linux_proto.h> 85 #endif 86 87 #include <compat/linux/linux_mib.h> 88 #include <compat/linux/linux_util.h> 89 90 #ifdef __i386__ 91 #include <machine/cputypes.h> 92 #endif 93 94 #define BSD_TO_LINUX_SIGNAL(sig) \ 95 (((sig) <= LINUX_SIGTBLSZ) ? bsd_to_linux_signal[_SIG_IDX(sig)] : sig) 96 97 static unsigned int linux_to_bsd_resource[LINUX_RLIM_NLIMITS] = { 98 RLIMIT_CPU, RLIMIT_FSIZE, RLIMIT_DATA, RLIMIT_STACK, 99 RLIMIT_CORE, RLIMIT_RSS, RLIMIT_NPROC, RLIMIT_NOFILE, 100 RLIMIT_MEMLOCK, -1 101 }; 102 103 struct l_sysinfo { 104 l_long uptime; /* Seconds since boot */ 105 l_ulong loads[3]; /* 1, 5, and 15 minute load averages */ 106 #define LINUX_SYSINFO_LOADS_SCALE 65536 107 l_ulong totalram; /* Total usable main memory size */ 108 l_ulong freeram; /* Available memory size */ 109 l_ulong sharedram; /* Amount of shared memory */ 110 l_ulong bufferram; /* Memory used by buffers */ 111 l_ulong totalswap; /* Total swap space size */ 112 l_ulong freeswap; /* swap space still available */ 113 l_ushort procs; /* Number of current processes */ 114 l_ulong totalbig; 115 l_ulong freebig; 116 l_uint mem_unit; 117 char _f[6]; /* Pads structure to 64 bytes */ 118 }; 119 int 120 linux_sysinfo(struct thread *td, struct linux_sysinfo_args *args) 121 { 122 struct l_sysinfo sysinfo; 123 vm_object_t object; 124 int i, j; 125 struct timespec ts; 126 127 getnanouptime(&ts); 128 if (ts.tv_nsec != 0) 129 ts.tv_sec++; 130 sysinfo.uptime = ts.tv_sec; 131 132 /* Use the information from the mib to get our load averages */ 133 for (i = 0; i < 3; i++) 134 sysinfo.loads[i] = averunnable.ldavg[i] * 135 LINUX_SYSINFO_LOADS_SCALE / averunnable.fscale; 136 137 sysinfo.totalram = physmem * PAGE_SIZE; 138 sysinfo.freeram = sysinfo.totalram - cnt.v_wire_count * PAGE_SIZE; 139 140 sysinfo.sharedram = 0; 141 mtx_lock(&vm_object_list_mtx); 142 TAILQ_FOREACH(object, &vm_object_list, object_list) 143 if (object->shadow_count > 1) 144 sysinfo.sharedram += object->resident_page_count; 145 mtx_unlock(&vm_object_list_mtx); 146 147 sysinfo.sharedram *= PAGE_SIZE; 148 sysinfo.bufferram = 0; 149 150 swap_pager_status(&i, &j); 151 sysinfo.totalswap= i * PAGE_SIZE; 152 sysinfo.freeswap = (i - j) * PAGE_SIZE; 153 154 sysinfo.procs = nprocs; 155 156 /* The following are only present in newer Linux kernels. */ 157 sysinfo.totalbig = 0; 158 sysinfo.freebig = 0; 159 sysinfo.mem_unit = 1; 160 161 return copyout(&sysinfo, args->info, sizeof(sysinfo)); 162 } 163 164 int 165 linux_alarm(struct thread *td, struct linux_alarm_args *args) 166 { 167 struct itimerval it, old_it; 168 int error; 169 170 #ifdef DEBUG 171 if (ldebug(alarm)) 172 printf(ARGS(alarm, "%u"), args->secs); 173 #endif 174 175 if (args->secs > 100000000) 176 return (EINVAL); 177 178 it.it_value.tv_sec = (long)args->secs; 179 it.it_value.tv_usec = 0; 180 it.it_interval.tv_sec = 0; 181 it.it_interval.tv_usec = 0; 182 error = kern_setitimer(td, ITIMER_REAL, &it, &old_it); 183 if (error) 184 return (error); 185 if (timevalisset(&old_it.it_value)) { 186 if (old_it.it_value.tv_usec != 0) 187 old_it.it_value.tv_sec++; 188 td->td_retval[0] = old_it.it_value.tv_sec; 189 } 190 return (0); 191 } 192 193 int 194 linux_brk(struct thread *td, struct linux_brk_args *args) 195 { 196 struct vmspace *vm = td->td_proc->p_vmspace; 197 vm_offset_t new, old; 198 struct obreak_args /* { 199 char * nsize; 200 } */ tmp; 201 202 #ifdef DEBUG 203 if (ldebug(brk)) 204 printf(ARGS(brk, "%p"), (void *)(uintptr_t)args->dsend); 205 #endif 206 old = (vm_offset_t)vm->vm_daddr + ctob(vm->vm_dsize); 207 new = (vm_offset_t)args->dsend; 208 tmp.nsize = (char *) new; 209 if (((caddr_t)new > vm->vm_daddr) && !obreak(td, &tmp)) 210 td->td_retval[0] = (long)new; 211 else 212 td->td_retval[0] = (long)old; 213 214 return 0; 215 } 216 217 #if defined(__i386__) 218 /* XXX: what about amd64/linux32? */ 219 220 int 221 linux_uselib(struct thread *td, struct linux_uselib_args *args) 222 { 223 struct nameidata ni; 224 struct vnode *vp; 225 struct exec *a_out; 226 struct vattr attr; 227 vm_offset_t vmaddr; 228 unsigned long file_offset; 229 vm_offset_t buffer; 230 unsigned long bss_size; 231 char *library; 232 int error; 233 int locked, vfslocked; 234 235 LCONVPATHEXIST(td, args->library, &library); 236 237 #ifdef DEBUG 238 if (ldebug(uselib)) 239 printf(ARGS(uselib, "%s"), library); 240 #endif 241 242 a_out = NULL; 243 vfslocked = 0; 244 locked = 0; 245 vp = NULL; 246 247 NDINIT(&ni, LOOKUP, ISOPEN | FOLLOW | LOCKLEAF | MPSAFE | AUDITVNODE1, 248 UIO_SYSSPACE, library, td); 249 error = namei(&ni); 250 LFREEPATH(library); 251 if (error) 252 goto cleanup; 253 254 vp = ni.ni_vp; 255 vfslocked = NDHASGIANT(&ni); 256 NDFREE(&ni, NDF_ONLY_PNBUF); 257 258 /* 259 * From here on down, we have a locked vnode that must be unlocked. 260 * XXX: The code below largely duplicates exec_check_permissions(). 261 */ 262 locked = 1; 263 264 /* Writable? */ 265 if (vp->v_writecount) { 266 error = ETXTBSY; 267 goto cleanup; 268 } 269 270 /* Executable? */ 271 error = VOP_GETATTR(vp, &attr, td->td_ucred, td); 272 if (error) 273 goto cleanup; 274 275 if ((vp->v_mount->mnt_flag & MNT_NOEXEC) || 276 ((attr.va_mode & 0111) == 0) || (attr.va_type != VREG)) { 277 /* EACCESS is what exec(2) returns. */ 278 error = ENOEXEC; 279 goto cleanup; 280 } 281 282 /* Sensible size? */ 283 if (attr.va_size == 0) { 284 error = ENOEXEC; 285 goto cleanup; 286 } 287 288 /* Can we access it? */ 289 error = VOP_ACCESS(vp, VEXEC, td->td_ucred, td); 290 if (error) 291 goto cleanup; 292 293 /* 294 * XXX: This should use vn_open() so that it is properly authorized, 295 * and to reduce code redundancy all over the place here. 296 * XXX: Not really, it duplicates far more of exec_check_permissions() 297 * than vn_open(). 298 */ 299 #ifdef MAC 300 error = mac_check_vnode_open(td->td_ucred, vp, FREAD); 301 if (error) 302 goto cleanup; 303 #endif 304 error = VOP_OPEN(vp, FREAD, td->td_ucred, td, -1); 305 if (error) 306 goto cleanup; 307 308 /* Pull in executable header into kernel_map */ 309 error = vm_mmap(kernel_map, (vm_offset_t *)&a_out, PAGE_SIZE, 310 VM_PROT_READ, VM_PROT_READ, 0, OBJT_VNODE, vp, 0); 311 if (error) 312 goto cleanup; 313 314 /* Is it a Linux binary ? */ 315 if (((a_out->a_magic >> 16) & 0xff) != 0x64) { 316 error = ENOEXEC; 317 goto cleanup; 318 } 319 320 /* 321 * While we are here, we should REALLY do some more checks 322 */ 323 324 /* Set file/virtual offset based on a.out variant. */ 325 switch ((int)(a_out->a_magic & 0xffff)) { 326 case 0413: /* ZMAGIC */ 327 file_offset = 1024; 328 break; 329 case 0314: /* QMAGIC */ 330 file_offset = 0; 331 break; 332 default: 333 error = ENOEXEC; 334 goto cleanup; 335 } 336 337 bss_size = round_page(a_out->a_bss); 338 339 /* Check various fields in header for validity/bounds. */ 340 if (a_out->a_text & PAGE_MASK || a_out->a_data & PAGE_MASK) { 341 error = ENOEXEC; 342 goto cleanup; 343 } 344 345 /* text + data can't exceed file size */ 346 if (a_out->a_data + a_out->a_text > attr.va_size) { 347 error = EFAULT; 348 goto cleanup; 349 } 350 351 /* 352 * text/data/bss must not exceed limits 353 * XXX - this is not complete. it should check current usage PLUS 354 * the resources needed by this library. 355 */ 356 PROC_LOCK(td->td_proc); 357 if (a_out->a_text > maxtsiz || 358 a_out->a_data + bss_size > lim_cur(td->td_proc, RLIMIT_DATA)) { 359 PROC_UNLOCK(td->td_proc); 360 error = ENOMEM; 361 goto cleanup; 362 } 363 PROC_UNLOCK(td->td_proc); 364 365 /* 366 * Prevent more writers. 367 * XXX: Note that if any of the VM operations fail below we don't 368 * clear this flag. 369 */ 370 vp->v_vflag |= VV_TEXT; 371 372 /* 373 * Lock no longer needed 374 */ 375 locked = 0; 376 VOP_UNLOCK(vp, 0, td); 377 VFS_UNLOCK_GIANT(vfslocked); 378 379 /* 380 * Check if file_offset page aligned. Currently we cannot handle 381 * misalinged file offsets, and so we read in the entire image 382 * (what a waste). 383 */ 384 if (file_offset & PAGE_MASK) { 385 #ifdef DEBUG 386 printf("uselib: Non page aligned binary %lu\n", file_offset); 387 #endif 388 /* Map text+data read/write/execute */ 389 390 /* a_entry is the load address and is page aligned */ 391 vmaddr = trunc_page(a_out->a_entry); 392 393 /* get anon user mapping, read+write+execute */ 394 error = vm_map_find(&td->td_proc->p_vmspace->vm_map, NULL, 0, 395 &vmaddr, a_out->a_text + a_out->a_data, FALSE, VM_PROT_ALL, 396 VM_PROT_ALL, 0); 397 if (error) 398 goto cleanup; 399 400 /* map file into kernel_map */ 401 error = vm_mmap(kernel_map, &buffer, 402 round_page(a_out->a_text + a_out->a_data + file_offset), 403 VM_PROT_READ, VM_PROT_READ, 0, OBJT_VNODE, vp, 404 trunc_page(file_offset)); 405 if (error) 406 goto cleanup; 407 408 /* copy from kernel VM space to user space */ 409 error = copyout(PTRIN(buffer + file_offset), 410 (void *)vmaddr, a_out->a_text + a_out->a_data); 411 412 /* release temporary kernel space */ 413 vm_map_remove(kernel_map, buffer, buffer + 414 round_page(a_out->a_text + a_out->a_data + file_offset)); 415 416 if (error) 417 goto cleanup; 418 } else { 419 #ifdef DEBUG 420 printf("uselib: Page aligned binary %lu\n", file_offset); 421 #endif 422 /* 423 * for QMAGIC, a_entry is 20 bytes beyond the load address 424 * to skip the executable header 425 */ 426 vmaddr = trunc_page(a_out->a_entry); 427 428 /* 429 * Map it all into the process's space as a single 430 * copy-on-write "data" segment. 431 */ 432 error = vm_mmap(&td->td_proc->p_vmspace->vm_map, &vmaddr, 433 a_out->a_text + a_out->a_data, VM_PROT_ALL, VM_PROT_ALL, 434 MAP_PRIVATE | MAP_FIXED, OBJT_VNODE, vp, file_offset); 435 if (error) 436 goto cleanup; 437 } 438 #ifdef DEBUG 439 printf("mem=%08lx = %08lx %08lx\n", (long)vmaddr, ((long*)vmaddr)[0], 440 ((long*)vmaddr)[1]); 441 #endif 442 if (bss_size != 0) { 443 /* Calculate BSS start address */ 444 vmaddr = trunc_page(a_out->a_entry) + a_out->a_text + 445 a_out->a_data; 446 447 /* allocate some 'anon' space */ 448 error = vm_map_find(&td->td_proc->p_vmspace->vm_map, NULL, 0, 449 &vmaddr, bss_size, FALSE, VM_PROT_ALL, VM_PROT_ALL, 0); 450 if (error) 451 goto cleanup; 452 } 453 454 cleanup: 455 /* Unlock vnode if needed */ 456 if (locked) { 457 VOP_UNLOCK(vp, 0, td); 458 VFS_UNLOCK_GIANT(vfslocked); 459 } 460 461 /* Release the kernel mapping. */ 462 if (a_out) 463 vm_map_remove(kernel_map, (vm_offset_t)a_out, 464 (vm_offset_t)a_out + PAGE_SIZE); 465 466 return error; 467 } 468 469 #endif /* __i386__ */ 470 471 int 472 linux_select(struct thread *td, struct linux_select_args *args) 473 { 474 l_timeval ltv; 475 struct timeval tv0, tv1, utv, *tvp; 476 int error; 477 478 #ifdef DEBUG 479 if (ldebug(select)) 480 printf(ARGS(select, "%d, %p, %p, %p, %p"), args->nfds, 481 (void *)args->readfds, (void *)args->writefds, 482 (void *)args->exceptfds, (void *)args->timeout); 483 #endif 484 485 /* 486 * Store current time for computation of the amount of 487 * time left. 488 */ 489 if (args->timeout) { 490 if ((error = copyin(args->timeout, <v, sizeof(ltv)))) 491 goto select_out; 492 utv.tv_sec = ltv.tv_sec; 493 utv.tv_usec = ltv.tv_usec; 494 #ifdef DEBUG 495 if (ldebug(select)) 496 printf(LMSG("incoming timeout (%jd/%ld)"), 497 (intmax_t)utv.tv_sec, utv.tv_usec); 498 #endif 499 500 if (itimerfix(&utv)) { 501 /* 502 * The timeval was invalid. Convert it to something 503 * valid that will act as it does under Linux. 504 */ 505 utv.tv_sec += utv.tv_usec / 1000000; 506 utv.tv_usec %= 1000000; 507 if (utv.tv_usec < 0) { 508 utv.tv_sec -= 1; 509 utv.tv_usec += 1000000; 510 } 511 if (utv.tv_sec < 0) 512 timevalclear(&utv); 513 } 514 microtime(&tv0); 515 tvp = &utv; 516 } else 517 tvp = NULL; 518 519 error = kern_select(td, args->nfds, args->readfds, args->writefds, 520 args->exceptfds, tvp); 521 522 #ifdef DEBUG 523 if (ldebug(select)) 524 printf(LMSG("real select returns %d"), error); 525 #endif 526 if (error) { 527 /* 528 * See fs/select.c in the Linux kernel. Without this, 529 * Maelstrom doesn't work. 530 */ 531 if (error == ERESTART) 532 error = EINTR; 533 goto select_out; 534 } 535 536 if (args->timeout) { 537 if (td->td_retval[0]) { 538 /* 539 * Compute how much time was left of the timeout, 540 * by subtracting the current time and the time 541 * before we started the call, and subtracting 542 * that result from the user-supplied value. 543 */ 544 microtime(&tv1); 545 timevalsub(&tv1, &tv0); 546 timevalsub(&utv, &tv1); 547 if (utv.tv_sec < 0) 548 timevalclear(&utv); 549 } else 550 timevalclear(&utv); 551 #ifdef DEBUG 552 if (ldebug(select)) 553 printf(LMSG("outgoing timeout (%jd/%ld)"), 554 (intmax_t)utv.tv_sec, utv.tv_usec); 555 #endif 556 ltv.tv_sec = utv.tv_sec; 557 ltv.tv_usec = utv.tv_usec; 558 if ((error = copyout(<v, args->timeout, sizeof(ltv)))) 559 goto select_out; 560 } 561 562 select_out: 563 #ifdef DEBUG 564 if (ldebug(select)) 565 printf(LMSG("select_out -> %d"), error); 566 #endif 567 return error; 568 } 569 570 int 571 linux_mremap(struct thread *td, struct linux_mremap_args *args) 572 { 573 struct munmap_args /* { 574 void *addr; 575 size_t len; 576 } */ bsd_args; 577 int error = 0; 578 579 #ifdef DEBUG 580 if (ldebug(mremap)) 581 printf(ARGS(mremap, "%p, %08lx, %08lx, %08lx"), 582 (void *)(uintptr_t)args->addr, 583 (unsigned long)args->old_len, 584 (unsigned long)args->new_len, 585 (unsigned long)args->flags); 586 #endif 587 args->new_len = round_page(args->new_len); 588 args->old_len = round_page(args->old_len); 589 590 if (args->new_len > args->old_len) { 591 td->td_retval[0] = 0; 592 return ENOMEM; 593 } 594 595 if (args->new_len < args->old_len) { 596 bsd_args.addr = 597 (caddr_t)((uintptr_t)args->addr + args->new_len); 598 bsd_args.len = args->old_len - args->new_len; 599 error = munmap(td, &bsd_args); 600 } 601 602 td->td_retval[0] = error ? 0 : (uintptr_t)args->addr; 603 return error; 604 } 605 606 #define LINUX_MS_ASYNC 0x0001 607 #define LINUX_MS_INVALIDATE 0x0002 608 #define LINUX_MS_SYNC 0x0004 609 610 int 611 linux_msync(struct thread *td, struct linux_msync_args *args) 612 { 613 struct msync_args bsd_args; 614 615 bsd_args.addr = (caddr_t)(uintptr_t)args->addr; 616 bsd_args.len = (uintptr_t)args->len; 617 bsd_args.flags = args->fl & ~LINUX_MS_SYNC; 618 619 return msync(td, &bsd_args); 620 } 621 622 int 623 linux_time(struct thread *td, struct linux_time_args *args) 624 { 625 struct timeval tv; 626 l_time_t tm; 627 int error; 628 629 #ifdef DEBUG 630 if (ldebug(time)) 631 printf(ARGS(time, "*")); 632 #endif 633 634 microtime(&tv); 635 tm = tv.tv_sec; 636 if (args->tm && (error = copyout(&tm, args->tm, sizeof(tm)))) 637 return error; 638 td->td_retval[0] = tm; 639 return 0; 640 } 641 642 struct l_times_argv { 643 l_long tms_utime; 644 l_long tms_stime; 645 l_long tms_cutime; 646 l_long tms_cstime; 647 }; 648 649 #define CLK_TCK 100 /* Linux uses 100 */ 650 651 #define CONVTCK(r) (r.tv_sec * CLK_TCK + r.tv_usec / (1000000 / CLK_TCK)) 652 653 int 654 linux_times(struct thread *td, struct linux_times_args *args) 655 { 656 struct timeval tv, utime, stime, cutime, cstime; 657 struct l_times_argv tms; 658 struct proc *p; 659 int error; 660 661 #ifdef DEBUG 662 if (ldebug(times)) 663 printf(ARGS(times, "*")); 664 #endif 665 666 if (args->buf != NULL) { 667 p = td->td_proc; 668 PROC_LOCK(p); 669 calcru(p, &utime, &stime); 670 calccru(p, &cutime, &cstime); 671 PROC_UNLOCK(p); 672 673 tms.tms_utime = CONVTCK(utime); 674 tms.tms_stime = CONVTCK(stime); 675 676 tms.tms_cutime = CONVTCK(cutime); 677 tms.tms_cstime = CONVTCK(cstime); 678 679 if ((error = copyout(&tms, args->buf, sizeof(tms)))) 680 return error; 681 } 682 683 microuptime(&tv); 684 td->td_retval[0] = (int)CONVTCK(tv); 685 return 0; 686 } 687 688 int 689 linux_newuname(struct thread *td, struct linux_newuname_args *args) 690 { 691 struct l_new_utsname utsname; 692 char osname[LINUX_MAX_UTSNAME]; 693 char osrelease[LINUX_MAX_UTSNAME]; 694 char *p; 695 696 #ifdef DEBUG 697 if (ldebug(newuname)) 698 printf(ARGS(newuname, "*")); 699 #endif 700 701 linux_get_osname(td, osname); 702 linux_get_osrelease(td, osrelease); 703 704 bzero(&utsname, sizeof(utsname)); 705 strlcpy(utsname.sysname, osname, LINUX_MAX_UTSNAME); 706 getcredhostname(td->td_ucred, utsname.nodename, LINUX_MAX_UTSNAME); 707 strlcpy(utsname.release, osrelease, LINUX_MAX_UTSNAME); 708 strlcpy(utsname.version, version, LINUX_MAX_UTSNAME); 709 for (p = utsname.version; *p != '\0'; ++p) 710 if (*p == '\n') { 711 *p = '\0'; 712 break; 713 } 714 #ifdef __i386__ 715 { 716 const char *class; 717 switch (cpu_class) { 718 case CPUCLASS_686: 719 class = "i686"; 720 break; 721 case CPUCLASS_586: 722 class = "i586"; 723 break; 724 case CPUCLASS_486: 725 class = "i486"; 726 break; 727 default: 728 class = "i386"; 729 } 730 strlcpy(utsname.machine, class, LINUX_MAX_UTSNAME); 731 } 732 #elif defined(__amd64__) /* XXX: Linux can change 'personality'. */ 733 #ifdef COMPAT_LINUX32 734 strlcpy(utsname.machine, "i686", LINUX_MAX_UTSNAME); 735 #else 736 strlcpy(utsname.machine, "x86_64", LINUX_MAX_UTSNAME); 737 #endif /* COMPAT_LINUX32 */ 738 #else /* something other than i386 or amd64 - assume we and Linux agree */ 739 strlcpy(utsname.machine, machine, LINUX_MAX_UTSNAME); 740 #endif /* __i386__ */ 741 strlcpy(utsname.domainname, domainname, LINUX_MAX_UTSNAME); 742 743 return (copyout(&utsname, args->buf, sizeof(utsname))); 744 } 745 746 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) 747 struct l_utimbuf { 748 l_time_t l_actime; 749 l_time_t l_modtime; 750 }; 751 752 int 753 linux_utime(struct thread *td, struct linux_utime_args *args) 754 { 755 struct timeval tv[2], *tvp; 756 struct l_utimbuf lut; 757 char *fname; 758 int error; 759 760 LCONVPATHEXIST(td, args->fname, &fname); 761 762 #ifdef DEBUG 763 if (ldebug(utime)) 764 printf(ARGS(utime, "%s, *"), fname); 765 #endif 766 767 if (args->times) { 768 if ((error = copyin(args->times, &lut, sizeof lut))) { 769 LFREEPATH(fname); 770 return error; 771 } 772 tv[0].tv_sec = lut.l_actime; 773 tv[0].tv_usec = 0; 774 tv[1].tv_sec = lut.l_modtime; 775 tv[1].tv_usec = 0; 776 tvp = tv; 777 } else 778 tvp = NULL; 779 780 error = kern_utimes(td, fname, UIO_SYSSPACE, tvp, UIO_SYSSPACE); 781 LFREEPATH(fname); 782 return (error); 783 } 784 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */ 785 786 #define __WCLONE 0x80000000 787 788 int 789 linux_waitpid(struct thread *td, struct linux_waitpid_args *args) 790 { 791 int error, options, tmpstat; 792 793 #ifdef DEBUG 794 if (ldebug(waitpid)) 795 printf(ARGS(waitpid, "%d, %p, %d"), 796 args->pid, (void *)args->status, args->options); 797 #endif 798 /* 799 * this is necessary because the test in kern_wait doesnt 800 * work because we mess with the options here 801 */ 802 if (args->options &~ (WUNTRACED|WNOHANG|WCONTINUED)) 803 return (EINVAL); 804 805 options = (args->options & (WNOHANG | WUNTRACED)); 806 /* WLINUXCLONE should be equal to __WCLONE, but we make sure */ 807 if (args->options & __WCLONE) 808 options |= WLINUXCLONE; 809 810 error = kern_wait(td, args->pid, &tmpstat, options, NULL); 811 if (error) 812 return error; 813 814 if (args->status) { 815 tmpstat &= 0xffff; 816 if (WIFSIGNALED(tmpstat)) 817 tmpstat = (tmpstat & 0xffffff80) | 818 BSD_TO_LINUX_SIGNAL(WTERMSIG(tmpstat)); 819 else if (WIFSTOPPED(tmpstat)) 820 tmpstat = (tmpstat & 0xffff00ff) | 821 (BSD_TO_LINUX_SIGNAL(WSTOPSIG(tmpstat)) << 8); 822 return copyout(&tmpstat, args->status, sizeof(int)); 823 } 824 825 return 0; 826 } 827 828 int 829 linux_wait4(struct thread *td, struct linux_wait4_args *args) 830 { 831 int error, options, tmpstat; 832 struct rusage ru, *rup; 833 struct proc *p; 834 835 #ifdef DEBUG 836 if (ldebug(wait4)) 837 printf(ARGS(wait4, "%d, %p, %d, %p"), 838 args->pid, (void *)args->status, args->options, 839 (void *)args->rusage); 840 #endif 841 842 options = (args->options & (WNOHANG | WUNTRACED)); 843 /* WLINUXCLONE should be equal to __WCLONE, but we make sure */ 844 if (args->options & __WCLONE) 845 options |= WLINUXCLONE; 846 847 if (args->rusage != NULL) 848 rup = &ru; 849 else 850 rup = NULL; 851 error = kern_wait(td, args->pid, &tmpstat, options, rup); 852 if (error) 853 return error; 854 855 p = td->td_proc; 856 PROC_LOCK(p); 857 sigqueue_delete(&p->p_sigqueue, SIGCHLD); 858 PROC_UNLOCK(p); 859 860 if (args->status) { 861 tmpstat &= 0xffff; 862 if (WIFSIGNALED(tmpstat)) 863 tmpstat = (tmpstat & 0xffffff80) | 864 BSD_TO_LINUX_SIGNAL(WTERMSIG(tmpstat)); 865 else if (WIFSTOPPED(tmpstat)) 866 tmpstat = (tmpstat & 0xffff00ff) | 867 (BSD_TO_LINUX_SIGNAL(WSTOPSIG(tmpstat)) << 8); 868 error = copyout(&tmpstat, args->status, sizeof(int)); 869 } 870 if (args->rusage != NULL && error == 0) 871 error = copyout(&ru, args->rusage, sizeof(ru)); 872 873 return (error); 874 } 875 876 int 877 linux_mknod(struct thread *td, struct linux_mknod_args *args) 878 { 879 char *path; 880 int error; 881 882 LCONVPATHCREAT(td, args->path, &path); 883 884 #ifdef DEBUG 885 if (ldebug(mknod)) 886 printf(ARGS(mknod, "%s, %d, %d"), path, args->mode, args->dev); 887 #endif 888 889 if (S_ISFIFO(args->mode)) 890 error = kern_mkfifo(td, path, UIO_SYSSPACE, args->mode); 891 else 892 error = kern_mknod(td, path, UIO_SYSSPACE, args->mode, 893 args->dev); 894 LFREEPATH(path); 895 return (error); 896 } 897 898 /* 899 * UGH! This is just about the dumbest idea I've ever heard!! 900 */ 901 int 902 linux_personality(struct thread *td, struct linux_personality_args *args) 903 { 904 #ifdef DEBUG 905 if (ldebug(personality)) 906 printf(ARGS(personality, "%lu"), (unsigned long)args->per); 907 #endif 908 if (args->per != 0) 909 return EINVAL; 910 911 /* Yes Jim, it's still a Linux... */ 912 td->td_retval[0] = 0; 913 return 0; 914 } 915 916 struct l_itimerval { 917 l_timeval it_interval; 918 l_timeval it_value; 919 }; 920 921 #define B2L_ITIMERVAL(bip, lip) \ 922 (bip)->it_interval.tv_sec = (lip)->it_interval.tv_sec; \ 923 (bip)->it_interval.tv_usec = (lip)->it_interval.tv_usec; \ 924 (bip)->it_value.tv_sec = (lip)->it_value.tv_sec; \ 925 (bip)->it_value.tv_usec = (lip)->it_value.tv_usec; 926 927 int 928 linux_setitimer(struct thread *td, struct linux_setitimer_args *uap) 929 { 930 int error; 931 struct l_itimerval ls; 932 struct itimerval aitv, oitv; 933 934 #ifdef DEBUG 935 if (ldebug(setitimer)) 936 printf(ARGS(setitimer, "%p, %p"), 937 (void *)uap->itv, (void *)uap->oitv); 938 #endif 939 940 if (uap->itv == NULL) { 941 uap->itv = uap->oitv; 942 return (linux_getitimer(td, (struct linux_getitimer_args *)uap)); 943 } 944 945 error = copyin(uap->itv, &ls, sizeof(ls)); 946 if (error != 0) 947 return (error); 948 B2L_ITIMERVAL(&aitv, &ls); 949 #ifdef DEBUG 950 if (ldebug(setitimer)) { 951 printf("setitimer: value: sec: %jd, usec: %ld\n", 952 (intmax_t)aitv.it_value.tv_sec, aitv.it_value.tv_usec); 953 printf("setitimer: interval: sec: %jd, usec: %ld\n", 954 (intmax_t)aitv.it_interval.tv_sec, aitv.it_interval.tv_usec); 955 } 956 #endif 957 error = kern_setitimer(td, uap->which, &aitv, &oitv); 958 if (error != 0 || uap->oitv == NULL) 959 return (error); 960 B2L_ITIMERVAL(&ls, &oitv); 961 962 return (copyout(&ls, uap->oitv, sizeof(ls))); 963 } 964 965 int 966 linux_getitimer(struct thread *td, struct linux_getitimer_args *uap) 967 { 968 int error; 969 struct l_itimerval ls; 970 struct itimerval aitv; 971 972 #ifdef DEBUG 973 if (ldebug(getitimer)) 974 printf(ARGS(getitimer, "%p"), (void *)uap->itv); 975 #endif 976 error = kern_getitimer(td, uap->which, &aitv); 977 if (error != 0) 978 return (error); 979 B2L_ITIMERVAL(&ls, &aitv); 980 return (copyout(&ls, uap->itv, sizeof(ls))); 981 } 982 983 int 984 linux_nice(struct thread *td, struct linux_nice_args *args) 985 { 986 struct setpriority_args bsd_args; 987 988 bsd_args.which = PRIO_PROCESS; 989 bsd_args.who = 0; /* current process */ 990 bsd_args.prio = args->inc; 991 return setpriority(td, &bsd_args); 992 } 993 994 int 995 linux_setgroups(struct thread *td, struct linux_setgroups_args *args) 996 { 997 struct ucred *newcred, *oldcred; 998 l_gid_t linux_gidset[NGROUPS]; 999 gid_t *bsd_gidset; 1000 int ngrp, error; 1001 struct proc *p; 1002 1003 ngrp = args->gidsetsize; 1004 if (ngrp < 0 || ngrp >= NGROUPS) 1005 return (EINVAL); 1006 error = copyin(args->grouplist, linux_gidset, ngrp * sizeof(l_gid_t)); 1007 if (error) 1008 return (error); 1009 newcred = crget(); 1010 p = td->td_proc; 1011 PROC_LOCK(p); 1012 oldcred = p->p_ucred; 1013 1014 /* 1015 * cr_groups[0] holds egid. Setting the whole set from 1016 * the supplied set will cause egid to be changed too. 1017 * Keep cr_groups[0] unchanged to prevent that. 1018 */ 1019 1020 if ((error = suser_cred(oldcred, SUSER_ALLOWJAIL)) != 0) { 1021 PROC_UNLOCK(p); 1022 crfree(newcred); 1023 return (error); 1024 } 1025 1026 crcopy(newcred, oldcred); 1027 if (ngrp > 0) { 1028 newcred->cr_ngroups = ngrp + 1; 1029 1030 bsd_gidset = newcred->cr_groups; 1031 ngrp--; 1032 while (ngrp >= 0) { 1033 bsd_gidset[ngrp + 1] = linux_gidset[ngrp]; 1034 ngrp--; 1035 } 1036 } 1037 else 1038 newcred->cr_ngroups = 1; 1039 1040 setsugid(p); 1041 p->p_ucred = newcred; 1042 PROC_UNLOCK(p); 1043 crfree(oldcred); 1044 return (0); 1045 } 1046 1047 int 1048 linux_getgroups(struct thread *td, struct linux_getgroups_args *args) 1049 { 1050 struct ucred *cred; 1051 l_gid_t linux_gidset[NGROUPS]; 1052 gid_t *bsd_gidset; 1053 int bsd_gidsetsz, ngrp, error; 1054 1055 cred = td->td_ucred; 1056 bsd_gidset = cred->cr_groups; 1057 bsd_gidsetsz = cred->cr_ngroups - 1; 1058 1059 /* 1060 * cr_groups[0] holds egid. Returning the whole set 1061 * here will cause a duplicate. Exclude cr_groups[0] 1062 * to prevent that. 1063 */ 1064 1065 if ((ngrp = args->gidsetsize) == 0) { 1066 td->td_retval[0] = bsd_gidsetsz; 1067 return (0); 1068 } 1069 1070 if (ngrp < bsd_gidsetsz) 1071 return (EINVAL); 1072 1073 ngrp = 0; 1074 while (ngrp < bsd_gidsetsz) { 1075 linux_gidset[ngrp] = bsd_gidset[ngrp + 1]; 1076 ngrp++; 1077 } 1078 1079 if ((error = copyout(linux_gidset, args->grouplist, 1080 ngrp * sizeof(l_gid_t)))) 1081 return (error); 1082 1083 td->td_retval[0] = ngrp; 1084 return (0); 1085 } 1086 1087 int 1088 linux_setrlimit(struct thread *td, struct linux_setrlimit_args *args) 1089 { 1090 struct rlimit bsd_rlim; 1091 struct l_rlimit rlim; 1092 u_int which; 1093 int error; 1094 1095 #ifdef DEBUG 1096 if (ldebug(setrlimit)) 1097 printf(ARGS(setrlimit, "%d, %p"), 1098 args->resource, (void *)args->rlim); 1099 #endif 1100 1101 if (args->resource >= LINUX_RLIM_NLIMITS) 1102 return (EINVAL); 1103 1104 which = linux_to_bsd_resource[args->resource]; 1105 if (which == -1) 1106 return (EINVAL); 1107 1108 error = copyin(args->rlim, &rlim, sizeof(rlim)); 1109 if (error) 1110 return (error); 1111 1112 bsd_rlim.rlim_cur = (rlim_t)rlim.rlim_cur; 1113 bsd_rlim.rlim_max = (rlim_t)rlim.rlim_max; 1114 return (kern_setrlimit(td, which, &bsd_rlim)); 1115 } 1116 1117 int 1118 linux_old_getrlimit(struct thread *td, struct linux_old_getrlimit_args *args) 1119 { 1120 struct l_rlimit rlim; 1121 struct proc *p = td->td_proc; 1122 struct rlimit bsd_rlim; 1123 u_int which; 1124 1125 #ifdef DEBUG 1126 if (ldebug(old_getrlimit)) 1127 printf(ARGS(old_getrlimit, "%d, %p"), 1128 args->resource, (void *)args->rlim); 1129 #endif 1130 1131 if (args->resource >= LINUX_RLIM_NLIMITS) 1132 return (EINVAL); 1133 1134 which = linux_to_bsd_resource[args->resource]; 1135 if (which == -1) 1136 return (EINVAL); 1137 1138 PROC_LOCK(p); 1139 lim_rlimit(p, which, &bsd_rlim); 1140 PROC_UNLOCK(p); 1141 1142 #ifdef COMPAT_LINUX32 1143 rlim.rlim_cur = (unsigned int)bsd_rlim.rlim_cur; 1144 if (rlim.rlim_cur == UINT_MAX) 1145 rlim.rlim_cur = INT_MAX; 1146 rlim.rlim_max = (unsigned int)bsd_rlim.rlim_max; 1147 if (rlim.rlim_max == UINT_MAX) 1148 rlim.rlim_max = INT_MAX; 1149 #else 1150 rlim.rlim_cur = (unsigned long)bsd_rlim.rlim_cur; 1151 if (rlim.rlim_cur == ULONG_MAX) 1152 rlim.rlim_cur = LONG_MAX; 1153 rlim.rlim_max = (unsigned long)bsd_rlim.rlim_max; 1154 if (rlim.rlim_max == ULONG_MAX) 1155 rlim.rlim_max = LONG_MAX; 1156 #endif 1157 return (copyout(&rlim, args->rlim, sizeof(rlim))); 1158 } 1159 1160 int 1161 linux_getrlimit(struct thread *td, struct linux_getrlimit_args *args) 1162 { 1163 struct l_rlimit rlim; 1164 struct proc *p = td->td_proc; 1165 struct rlimit bsd_rlim; 1166 u_int which; 1167 1168 #ifdef DEBUG 1169 if (ldebug(getrlimit)) 1170 printf(ARGS(getrlimit, "%d, %p"), 1171 args->resource, (void *)args->rlim); 1172 #endif 1173 1174 if (args->resource >= LINUX_RLIM_NLIMITS) 1175 return (EINVAL); 1176 1177 which = linux_to_bsd_resource[args->resource]; 1178 if (which == -1) 1179 return (EINVAL); 1180 1181 PROC_LOCK(p); 1182 lim_rlimit(p, which, &bsd_rlim); 1183 PROC_UNLOCK(p); 1184 1185 rlim.rlim_cur = (l_ulong)bsd_rlim.rlim_cur; 1186 rlim.rlim_max = (l_ulong)bsd_rlim.rlim_max; 1187 return (copyout(&rlim, args->rlim, sizeof(rlim))); 1188 } 1189 1190 int 1191 linux_sched_setscheduler(struct thread *td, 1192 struct linux_sched_setscheduler_args *args) 1193 { 1194 struct sched_setscheduler_args bsd; 1195 1196 #ifdef DEBUG 1197 if (ldebug(sched_setscheduler)) 1198 printf(ARGS(sched_setscheduler, "%d, %d, %p"), 1199 args->pid, args->policy, (const void *)args->param); 1200 #endif 1201 1202 switch (args->policy) { 1203 case LINUX_SCHED_OTHER: 1204 bsd.policy = SCHED_OTHER; 1205 break; 1206 case LINUX_SCHED_FIFO: 1207 bsd.policy = SCHED_FIFO; 1208 break; 1209 case LINUX_SCHED_RR: 1210 bsd.policy = SCHED_RR; 1211 break; 1212 default: 1213 return EINVAL; 1214 } 1215 1216 bsd.pid = args->pid; 1217 bsd.param = (struct sched_param *)args->param; 1218 return sched_setscheduler(td, &bsd); 1219 } 1220 1221 int 1222 linux_sched_getscheduler(struct thread *td, 1223 struct linux_sched_getscheduler_args *args) 1224 { 1225 struct sched_getscheduler_args bsd; 1226 int error; 1227 1228 #ifdef DEBUG 1229 if (ldebug(sched_getscheduler)) 1230 printf(ARGS(sched_getscheduler, "%d"), args->pid); 1231 #endif 1232 1233 bsd.pid = args->pid; 1234 error = sched_getscheduler(td, &bsd); 1235 1236 switch (td->td_retval[0]) { 1237 case SCHED_OTHER: 1238 td->td_retval[0] = LINUX_SCHED_OTHER; 1239 break; 1240 case SCHED_FIFO: 1241 td->td_retval[0] = LINUX_SCHED_FIFO; 1242 break; 1243 case SCHED_RR: 1244 td->td_retval[0] = LINUX_SCHED_RR; 1245 break; 1246 } 1247 1248 return error; 1249 } 1250 1251 int 1252 linux_sched_get_priority_max(struct thread *td, 1253 struct linux_sched_get_priority_max_args *args) 1254 { 1255 struct sched_get_priority_max_args bsd; 1256 1257 #ifdef DEBUG 1258 if (ldebug(sched_get_priority_max)) 1259 printf(ARGS(sched_get_priority_max, "%d"), args->policy); 1260 #endif 1261 1262 switch (args->policy) { 1263 case LINUX_SCHED_OTHER: 1264 bsd.policy = SCHED_OTHER; 1265 break; 1266 case LINUX_SCHED_FIFO: 1267 bsd.policy = SCHED_FIFO; 1268 break; 1269 case LINUX_SCHED_RR: 1270 bsd.policy = SCHED_RR; 1271 break; 1272 default: 1273 return EINVAL; 1274 } 1275 return sched_get_priority_max(td, &bsd); 1276 } 1277 1278 int 1279 linux_sched_get_priority_min(struct thread *td, 1280 struct linux_sched_get_priority_min_args *args) 1281 { 1282 struct sched_get_priority_min_args bsd; 1283 1284 #ifdef DEBUG 1285 if (ldebug(sched_get_priority_min)) 1286 printf(ARGS(sched_get_priority_min, "%d"), args->policy); 1287 #endif 1288 1289 switch (args->policy) { 1290 case LINUX_SCHED_OTHER: 1291 bsd.policy = SCHED_OTHER; 1292 break; 1293 case LINUX_SCHED_FIFO: 1294 bsd.policy = SCHED_FIFO; 1295 break; 1296 case LINUX_SCHED_RR: 1297 bsd.policy = SCHED_RR; 1298 break; 1299 default: 1300 return EINVAL; 1301 } 1302 return sched_get_priority_min(td, &bsd); 1303 } 1304 1305 #define REBOOT_CAD_ON 0x89abcdef 1306 #define REBOOT_CAD_OFF 0 1307 #define REBOOT_HALT 0xcdef0123 1308 #define REBOOT_RESTART 0x01234567 1309 #define REBOOT_RESTART2 0xA1B2C3D4 1310 #define REBOOT_POWEROFF 0x4321FEDC 1311 #define REBOOT_MAGIC1 0xfee1dead 1312 #define REBOOT_MAGIC2 0x28121969 1313 #define REBOOT_MAGIC2A 0x05121996 1314 #define REBOOT_MAGIC2B 0x16041998 1315 1316 int 1317 linux_reboot(struct thread *td, struct linux_reboot_args *args) 1318 { 1319 struct reboot_args bsd_args; 1320 1321 #ifdef DEBUG 1322 if (ldebug(reboot)) 1323 printf(ARGS(reboot, "0x%x"), args->cmd); 1324 #endif 1325 1326 if (args->magic1 != REBOOT_MAGIC1) 1327 return EINVAL; 1328 1329 switch (args->magic2) { 1330 case REBOOT_MAGIC2: 1331 case REBOOT_MAGIC2A: 1332 case REBOOT_MAGIC2B: 1333 break; 1334 default: 1335 return EINVAL; 1336 } 1337 1338 switch (args->cmd) { 1339 case REBOOT_CAD_ON: 1340 case REBOOT_CAD_OFF: 1341 return suser(td); 1342 case REBOOT_HALT: 1343 bsd_args.opt = RB_HALT; 1344 break; 1345 case REBOOT_RESTART: 1346 case REBOOT_RESTART2: 1347 bsd_args.opt = 0; 1348 break; 1349 case REBOOT_POWEROFF: 1350 bsd_args.opt = RB_POWEROFF; 1351 break; 1352 default: 1353 return EINVAL; 1354 } 1355 return reboot(td, &bsd_args); 1356 } 1357 1358 1359 /* 1360 * The FreeBSD native getpid(2), getgid(2) and getuid(2) also modify 1361 * td->td_retval[1] when COMPAT_43 is defined. This 1362 * globbers registers that are assumed to be preserved. The following 1363 * lightweight syscalls fixes this. See also linux_getgid16() and 1364 * linux_getuid16() in linux_uid16.c. 1365 * 1366 * linux_getpid() - MP SAFE 1367 * linux_getgid() - MP SAFE 1368 * linux_getuid() - MP SAFE 1369 */ 1370 1371 int 1372 linux_getpid(struct thread *td, struct linux_getpid_args *args) 1373 { 1374 struct linux_emuldata *em; 1375 char osrel[LINUX_MAX_UTSNAME]; 1376 1377 linux_get_osrelease(td, osrel); 1378 if (strlen(osrel) >= 3 && osrel[2] == '6') { 1379 em = em_find(td->td_proc, EMUL_UNLOCKED); 1380 KASSERT(em != NULL, ("getpid: emuldata not found.\n")); 1381 td->td_retval[0] = em->shared->group_pid; 1382 EMUL_UNLOCK(&emul_lock); 1383 } else { 1384 PROC_LOCK(td->td_proc); 1385 td->td_retval[0] = td->td_proc->p_pid; 1386 PROC_UNLOCK(td->td_proc); 1387 } 1388 1389 return (0); 1390 } 1391 1392 int 1393 linux_gettid(struct thread *td, struct linux_gettid_args *args) 1394 { 1395 #ifdef DEBUG 1396 if (ldebug(gettid)) 1397 printf(ARGS(gettid, "")); 1398 #endif 1399 1400 td->td_retval[0] = td->td_proc->p_pid; 1401 return (0); 1402 } 1403 1404 1405 int 1406 linux_getppid(struct thread *td, struct linux_getppid_args *args) 1407 { 1408 struct linux_emuldata *em; 1409 struct proc *p, *pp; 1410 char osrel[LINUX_MAX_UTSNAME]; 1411 1412 linux_get_osrelease(td, osrel); 1413 if (strlen(osrel) >= 3 && osrel[2] != '6') { 1414 PROC_LOCK(td->td_proc); 1415 td->td_retval[0] = td->td_proc->p_pptr->p_pid; 1416 PROC_UNLOCK(td->td_proc); 1417 return (0); 1418 } 1419 1420 em = em_find(td->td_proc, EMUL_UNLOCKED); 1421 1422 KASSERT(em != NULL, ("getppid: process emuldata not found.\n")); 1423 1424 /* find the group leader */ 1425 p = pfind(em->shared->group_pid); 1426 1427 if (p == NULL) { 1428 #ifdef DEBUG 1429 printf(LMSG("parent process not found.\n")); 1430 #endif 1431 return (0); 1432 } 1433 1434 pp = p->p_pptr; /* switch to parent */ 1435 PROC_LOCK(pp); 1436 PROC_UNLOCK(p); 1437 1438 /* if its also linux process */ 1439 if (pp->p_sysent == &elf_linux_sysvec) { 1440 em = em_find(pp, EMUL_LOCKED); 1441 KASSERT(em != NULL, ("getppid: parent emuldata not found.\n")); 1442 1443 td->td_retval[0] = em->shared->group_pid; 1444 } else 1445 td->td_retval[0] = pp->p_pid; 1446 1447 EMUL_UNLOCK(&emul_lock); 1448 PROC_UNLOCK(pp); 1449 1450 return (0); 1451 } 1452 1453 int 1454 linux_getgid(struct thread *td, struct linux_getgid_args *args) 1455 { 1456 1457 td->td_retval[0] = td->td_ucred->cr_rgid; 1458 return (0); 1459 } 1460 1461 int 1462 linux_getuid(struct thread *td, struct linux_getuid_args *args) 1463 { 1464 1465 td->td_retval[0] = td->td_ucred->cr_ruid; 1466 return (0); 1467 } 1468 1469 1470 int 1471 linux_getsid(struct thread *td, struct linux_getsid_args *args) 1472 { 1473 struct getsid_args bsd; 1474 bsd.pid = args->pid; 1475 return getsid(td, &bsd); 1476 } 1477 1478 int 1479 linux_nosys(struct thread *td, struct nosys_args *ignore) 1480 { 1481 1482 return (ENOSYS); 1483 } 1484 1485 int 1486 linux_getpriority(struct thread *td, struct linux_getpriority_args *args) 1487 { 1488 struct getpriority_args bsd_args; 1489 int error; 1490 1491 bsd_args.which = args->which; 1492 bsd_args.who = args->who; 1493 error = getpriority(td, &bsd_args); 1494 td->td_retval[0] = 20 - td->td_retval[0]; 1495 return error; 1496 } 1497 1498 int 1499 linux_sethostname(struct thread *td, struct linux_sethostname_args *args) 1500 { 1501 int name[2]; 1502 1503 name[0] = CTL_KERN; 1504 name[1] = KERN_HOSTNAME; 1505 return (userland_sysctl(td, name, 2, 0, 0, 0, args->hostname, 1506 args->len, 0, 0)); 1507 } 1508 1509 int 1510 linux_exit_group(struct thread *td, struct linux_exit_group_args *args) 1511 { 1512 struct linux_emuldata *em, *td_em, *tmp_em; 1513 struct proc *sp; 1514 char osrel[LINUX_MAX_UTSNAME]; 1515 1516 #ifdef DEBUG 1517 if (ldebug(exit_group)) 1518 printf(ARGS(exit_group, "%i"), args->error_code); 1519 #endif 1520 1521 linux_get_osrelease(td, osrel); 1522 if (strlen(osrel) >= 3 && osrel[2] == '6') { 1523 td_em = em_find(td->td_proc, EMUL_UNLOCKED); 1524 1525 KASSERT(td_em != NULL, ("exit_group: emuldata not found.\n")); 1526 1527 EMUL_SHARED_RLOCK(&emul_shared_lock); 1528 LIST_FOREACH_SAFE(em, &td_em->shared->threads, threads, tmp_em) { 1529 if (em->pid == td_em->pid) 1530 continue; 1531 1532 sp = pfind(em->pid); 1533 psignal(sp, SIGKILL); 1534 PROC_UNLOCK(sp); 1535 #ifdef DEBUG 1536 printf(LMSG("linux_sys_exit_group: kill PID %d\n"), em->pid); 1537 #endif 1538 } 1539 1540 EMUL_SHARED_RUNLOCK(&emul_shared_lock); 1541 EMUL_UNLOCK(&emul_lock); 1542 } 1543 1544 exit1(td, W_EXITCODE(args->error_code,0)); 1545 1546 return (0); 1547 } 1548