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 options = (args->options & (WNOHANG | WUNTRACED)); 800 /* WLINUXCLONE should be equal to __WCLONE, but we make sure */ 801 if (args->options & __WCLONE) 802 options |= WLINUXCLONE; 803 804 error = kern_wait(td, args->pid, &tmpstat, options, NULL); 805 if (error) 806 return error; 807 808 if (args->status) { 809 tmpstat &= 0xffff; 810 if (WIFSIGNALED(tmpstat)) 811 tmpstat = (tmpstat & 0xffffff80) | 812 BSD_TO_LINUX_SIGNAL(WTERMSIG(tmpstat)); 813 else if (WIFSTOPPED(tmpstat)) 814 tmpstat = (tmpstat & 0xffff00ff) | 815 (BSD_TO_LINUX_SIGNAL(WSTOPSIG(tmpstat)) << 8); 816 return copyout(&tmpstat, args->status, sizeof(int)); 817 } 818 819 return 0; 820 } 821 822 int 823 linux_wait4(struct thread *td, struct linux_wait4_args *args) 824 { 825 int error, options, tmpstat; 826 struct rusage ru, *rup; 827 struct proc *p; 828 829 #ifdef DEBUG 830 if (ldebug(wait4)) 831 printf(ARGS(wait4, "%d, %p, %d, %p"), 832 args->pid, (void *)args->status, args->options, 833 (void *)args->rusage); 834 #endif 835 836 options = (args->options & (WNOHANG | WUNTRACED)); 837 /* WLINUXCLONE should be equal to __WCLONE, but we make sure */ 838 if (args->options & __WCLONE) 839 options |= WLINUXCLONE; 840 841 if (args->rusage != NULL) 842 rup = &ru; 843 else 844 rup = NULL; 845 error = kern_wait(td, args->pid, &tmpstat, options, rup); 846 if (error) 847 return error; 848 849 p = td->td_proc; 850 PROC_LOCK(p); 851 sigqueue_delete(&p->p_sigqueue, SIGCHLD); 852 PROC_UNLOCK(p); 853 854 if (args->status) { 855 tmpstat &= 0xffff; 856 if (WIFSIGNALED(tmpstat)) 857 tmpstat = (tmpstat & 0xffffff80) | 858 BSD_TO_LINUX_SIGNAL(WTERMSIG(tmpstat)); 859 else if (WIFSTOPPED(tmpstat)) 860 tmpstat = (tmpstat & 0xffff00ff) | 861 (BSD_TO_LINUX_SIGNAL(WSTOPSIG(tmpstat)) << 8); 862 error = copyout(&tmpstat, args->status, sizeof(int)); 863 } 864 if (args->rusage != NULL && error == 0) 865 error = copyout(&ru, args->rusage, sizeof(ru)); 866 867 return (error); 868 } 869 870 int 871 linux_mknod(struct thread *td, struct linux_mknod_args *args) 872 { 873 char *path; 874 int error; 875 876 LCONVPATHCREAT(td, args->path, &path); 877 878 #ifdef DEBUG 879 if (ldebug(mknod)) 880 printf(ARGS(mknod, "%s, %d, %d"), path, args->mode, args->dev); 881 #endif 882 883 if (args->mode & S_IFIFO) 884 error = kern_mkfifo(td, path, UIO_SYSSPACE, args->mode); 885 else 886 error = kern_mknod(td, path, UIO_SYSSPACE, args->mode, 887 args->dev); 888 LFREEPATH(path); 889 return (error); 890 } 891 892 /* 893 * UGH! This is just about the dumbest idea I've ever heard!! 894 */ 895 int 896 linux_personality(struct thread *td, struct linux_personality_args *args) 897 { 898 #ifdef DEBUG 899 if (ldebug(personality)) 900 printf(ARGS(personality, "%lu"), (unsigned long)args->per); 901 #endif 902 if (args->per != 0) 903 return EINVAL; 904 905 /* Yes Jim, it's still a Linux... */ 906 td->td_retval[0] = 0; 907 return 0; 908 } 909 910 struct l_itimerval { 911 l_timeval it_interval; 912 l_timeval it_value; 913 }; 914 915 #define B2L_ITIMERVAL(bip, lip) \ 916 (bip)->it_interval.tv_sec = (lip)->it_interval.tv_sec; \ 917 (bip)->it_interval.tv_usec = (lip)->it_interval.tv_usec; \ 918 (bip)->it_value.tv_sec = (lip)->it_value.tv_sec; \ 919 (bip)->it_value.tv_usec = (lip)->it_value.tv_usec; 920 921 int 922 linux_setitimer(struct thread *td, struct linux_setitimer_args *uap) 923 { 924 int error; 925 struct l_itimerval ls; 926 struct itimerval aitv, oitv; 927 928 #ifdef DEBUG 929 if (ldebug(setitimer)) 930 printf(ARGS(setitimer, "%p, %p"), 931 (void *)uap->itv, (void *)uap->oitv); 932 #endif 933 934 if (uap->itv == NULL) { 935 uap->itv = uap->oitv; 936 return (linux_getitimer(td, (struct linux_getitimer_args *)uap)); 937 } 938 939 error = copyin(uap->itv, &ls, sizeof(ls)); 940 if (error != 0) 941 return (error); 942 B2L_ITIMERVAL(&aitv, &ls); 943 #ifdef DEBUG 944 if (ldebug(setitimer)) { 945 printf("setitimer: value: sec: %jd, usec: %ld\n", 946 (intmax_t)aitv.it_value.tv_sec, aitv.it_value.tv_usec); 947 printf("setitimer: interval: sec: %jd, usec: %ld\n", 948 (intmax_t)aitv.it_interval.tv_sec, aitv.it_interval.tv_usec); 949 } 950 #endif 951 error = kern_setitimer(td, uap->which, &aitv, &oitv); 952 if (error != 0 || uap->oitv == NULL) 953 return (error); 954 B2L_ITIMERVAL(&ls, &oitv); 955 956 return (copyout(&ls, uap->oitv, sizeof(ls))); 957 } 958 959 int 960 linux_getitimer(struct thread *td, struct linux_getitimer_args *uap) 961 { 962 int error; 963 struct l_itimerval ls; 964 struct itimerval aitv; 965 966 #ifdef DEBUG 967 if (ldebug(getitimer)) 968 printf(ARGS(getitimer, "%p"), (void *)uap->itv); 969 #endif 970 error = kern_getitimer(td, uap->which, &aitv); 971 if (error != 0) 972 return (error); 973 B2L_ITIMERVAL(&ls, &aitv); 974 return (copyout(&ls, uap->itv, sizeof(ls))); 975 } 976 977 int 978 linux_nice(struct thread *td, struct linux_nice_args *args) 979 { 980 struct setpriority_args bsd_args; 981 982 bsd_args.which = PRIO_PROCESS; 983 bsd_args.who = 0; /* current process */ 984 bsd_args.prio = args->inc; 985 return setpriority(td, &bsd_args); 986 } 987 988 int 989 linux_setgroups(struct thread *td, struct linux_setgroups_args *args) 990 { 991 struct ucred *newcred, *oldcred; 992 l_gid_t linux_gidset[NGROUPS]; 993 gid_t *bsd_gidset; 994 int ngrp, error; 995 struct proc *p; 996 997 ngrp = args->gidsetsize; 998 if (ngrp < 0 || ngrp >= NGROUPS) 999 return (EINVAL); 1000 error = copyin(args->grouplist, linux_gidset, ngrp * sizeof(l_gid_t)); 1001 if (error) 1002 return (error); 1003 newcred = crget(); 1004 p = td->td_proc; 1005 PROC_LOCK(p); 1006 oldcred = p->p_ucred; 1007 1008 /* 1009 * cr_groups[0] holds egid. Setting the whole set from 1010 * the supplied set will cause egid to be changed too. 1011 * Keep cr_groups[0] unchanged to prevent that. 1012 */ 1013 1014 if ((error = suser_cred(oldcred, SUSER_ALLOWJAIL)) != 0) { 1015 PROC_UNLOCK(p); 1016 crfree(newcred); 1017 return (error); 1018 } 1019 1020 crcopy(newcred, oldcred); 1021 if (ngrp > 0) { 1022 newcred->cr_ngroups = ngrp + 1; 1023 1024 bsd_gidset = newcred->cr_groups; 1025 ngrp--; 1026 while (ngrp >= 0) { 1027 bsd_gidset[ngrp + 1] = linux_gidset[ngrp]; 1028 ngrp--; 1029 } 1030 } 1031 else 1032 newcred->cr_ngroups = 1; 1033 1034 setsugid(p); 1035 p->p_ucred = newcred; 1036 PROC_UNLOCK(p); 1037 crfree(oldcred); 1038 return (0); 1039 } 1040 1041 int 1042 linux_getgroups(struct thread *td, struct linux_getgroups_args *args) 1043 { 1044 struct ucred *cred; 1045 l_gid_t linux_gidset[NGROUPS]; 1046 gid_t *bsd_gidset; 1047 int bsd_gidsetsz, ngrp, error; 1048 1049 cred = td->td_ucred; 1050 bsd_gidset = cred->cr_groups; 1051 bsd_gidsetsz = cred->cr_ngroups - 1; 1052 1053 /* 1054 * cr_groups[0] holds egid. Returning the whole set 1055 * here will cause a duplicate. Exclude cr_groups[0] 1056 * to prevent that. 1057 */ 1058 1059 if ((ngrp = args->gidsetsize) == 0) { 1060 td->td_retval[0] = bsd_gidsetsz; 1061 return (0); 1062 } 1063 1064 if (ngrp < bsd_gidsetsz) 1065 return (EINVAL); 1066 1067 ngrp = 0; 1068 while (ngrp < bsd_gidsetsz) { 1069 linux_gidset[ngrp] = bsd_gidset[ngrp + 1]; 1070 ngrp++; 1071 } 1072 1073 if ((error = copyout(linux_gidset, args->grouplist, 1074 ngrp * sizeof(l_gid_t)))) 1075 return (error); 1076 1077 td->td_retval[0] = ngrp; 1078 return (0); 1079 } 1080 1081 int 1082 linux_setrlimit(struct thread *td, struct linux_setrlimit_args *args) 1083 { 1084 struct rlimit bsd_rlim; 1085 struct l_rlimit rlim; 1086 u_int which; 1087 int error; 1088 1089 #ifdef DEBUG 1090 if (ldebug(setrlimit)) 1091 printf(ARGS(setrlimit, "%d, %p"), 1092 args->resource, (void *)args->rlim); 1093 #endif 1094 1095 if (args->resource >= LINUX_RLIM_NLIMITS) 1096 return (EINVAL); 1097 1098 which = linux_to_bsd_resource[args->resource]; 1099 if (which == -1) 1100 return (EINVAL); 1101 1102 error = copyin(args->rlim, &rlim, sizeof(rlim)); 1103 if (error) 1104 return (error); 1105 1106 bsd_rlim.rlim_cur = (rlim_t)rlim.rlim_cur; 1107 bsd_rlim.rlim_max = (rlim_t)rlim.rlim_max; 1108 return (kern_setrlimit(td, which, &bsd_rlim)); 1109 } 1110 1111 int 1112 linux_old_getrlimit(struct thread *td, struct linux_old_getrlimit_args *args) 1113 { 1114 struct l_rlimit rlim; 1115 struct proc *p = td->td_proc; 1116 struct rlimit bsd_rlim; 1117 u_int which; 1118 1119 #ifdef DEBUG 1120 if (ldebug(old_getrlimit)) 1121 printf(ARGS(old_getrlimit, "%d, %p"), 1122 args->resource, (void *)args->rlim); 1123 #endif 1124 1125 if (args->resource >= LINUX_RLIM_NLIMITS) 1126 return (EINVAL); 1127 1128 which = linux_to_bsd_resource[args->resource]; 1129 if (which == -1) 1130 return (EINVAL); 1131 1132 PROC_LOCK(p); 1133 lim_rlimit(p, which, &bsd_rlim); 1134 PROC_UNLOCK(p); 1135 1136 #ifdef COMPAT_LINUX32 1137 rlim.rlim_cur = (unsigned int)bsd_rlim.rlim_cur; 1138 if (rlim.rlim_cur == UINT_MAX) 1139 rlim.rlim_cur = INT_MAX; 1140 rlim.rlim_max = (unsigned int)bsd_rlim.rlim_max; 1141 if (rlim.rlim_max == UINT_MAX) 1142 rlim.rlim_max = INT_MAX; 1143 #else 1144 rlim.rlim_cur = (unsigned long)bsd_rlim.rlim_cur; 1145 if (rlim.rlim_cur == ULONG_MAX) 1146 rlim.rlim_cur = LONG_MAX; 1147 rlim.rlim_max = (unsigned long)bsd_rlim.rlim_max; 1148 if (rlim.rlim_max == ULONG_MAX) 1149 rlim.rlim_max = LONG_MAX; 1150 #endif 1151 return (copyout(&rlim, args->rlim, sizeof(rlim))); 1152 } 1153 1154 int 1155 linux_getrlimit(struct thread *td, struct linux_getrlimit_args *args) 1156 { 1157 struct l_rlimit rlim; 1158 struct proc *p = td->td_proc; 1159 struct rlimit bsd_rlim; 1160 u_int which; 1161 1162 #ifdef DEBUG 1163 if (ldebug(getrlimit)) 1164 printf(ARGS(getrlimit, "%d, %p"), 1165 args->resource, (void *)args->rlim); 1166 #endif 1167 1168 if (args->resource >= LINUX_RLIM_NLIMITS) 1169 return (EINVAL); 1170 1171 which = linux_to_bsd_resource[args->resource]; 1172 if (which == -1) 1173 return (EINVAL); 1174 1175 PROC_LOCK(p); 1176 lim_rlimit(p, which, &bsd_rlim); 1177 PROC_UNLOCK(p); 1178 1179 rlim.rlim_cur = (l_ulong)bsd_rlim.rlim_cur; 1180 rlim.rlim_max = (l_ulong)bsd_rlim.rlim_max; 1181 return (copyout(&rlim, args->rlim, sizeof(rlim))); 1182 } 1183 1184 int 1185 linux_sched_setscheduler(struct thread *td, 1186 struct linux_sched_setscheduler_args *args) 1187 { 1188 struct sched_setscheduler_args bsd; 1189 1190 #ifdef DEBUG 1191 if (ldebug(sched_setscheduler)) 1192 printf(ARGS(sched_setscheduler, "%d, %d, %p"), 1193 args->pid, args->policy, (const void *)args->param); 1194 #endif 1195 1196 switch (args->policy) { 1197 case LINUX_SCHED_OTHER: 1198 bsd.policy = SCHED_OTHER; 1199 break; 1200 case LINUX_SCHED_FIFO: 1201 bsd.policy = SCHED_FIFO; 1202 break; 1203 case LINUX_SCHED_RR: 1204 bsd.policy = SCHED_RR; 1205 break; 1206 default: 1207 return EINVAL; 1208 } 1209 1210 bsd.pid = args->pid; 1211 bsd.param = (struct sched_param *)args->param; 1212 return sched_setscheduler(td, &bsd); 1213 } 1214 1215 int 1216 linux_sched_getscheduler(struct thread *td, 1217 struct linux_sched_getscheduler_args *args) 1218 { 1219 struct sched_getscheduler_args bsd; 1220 int error; 1221 1222 #ifdef DEBUG 1223 if (ldebug(sched_getscheduler)) 1224 printf(ARGS(sched_getscheduler, "%d"), args->pid); 1225 #endif 1226 1227 bsd.pid = args->pid; 1228 error = sched_getscheduler(td, &bsd); 1229 1230 switch (td->td_retval[0]) { 1231 case SCHED_OTHER: 1232 td->td_retval[0] = LINUX_SCHED_OTHER; 1233 break; 1234 case SCHED_FIFO: 1235 td->td_retval[0] = LINUX_SCHED_FIFO; 1236 break; 1237 case SCHED_RR: 1238 td->td_retval[0] = LINUX_SCHED_RR; 1239 break; 1240 } 1241 1242 return error; 1243 } 1244 1245 int 1246 linux_sched_get_priority_max(struct thread *td, 1247 struct linux_sched_get_priority_max_args *args) 1248 { 1249 struct sched_get_priority_max_args bsd; 1250 1251 #ifdef DEBUG 1252 if (ldebug(sched_get_priority_max)) 1253 printf(ARGS(sched_get_priority_max, "%d"), args->policy); 1254 #endif 1255 1256 switch (args->policy) { 1257 case LINUX_SCHED_OTHER: 1258 bsd.policy = SCHED_OTHER; 1259 break; 1260 case LINUX_SCHED_FIFO: 1261 bsd.policy = SCHED_FIFO; 1262 break; 1263 case LINUX_SCHED_RR: 1264 bsd.policy = SCHED_RR; 1265 break; 1266 default: 1267 return EINVAL; 1268 } 1269 return sched_get_priority_max(td, &bsd); 1270 } 1271 1272 int 1273 linux_sched_get_priority_min(struct thread *td, 1274 struct linux_sched_get_priority_min_args *args) 1275 { 1276 struct sched_get_priority_min_args bsd; 1277 1278 #ifdef DEBUG 1279 if (ldebug(sched_get_priority_min)) 1280 printf(ARGS(sched_get_priority_min, "%d"), args->policy); 1281 #endif 1282 1283 switch (args->policy) { 1284 case LINUX_SCHED_OTHER: 1285 bsd.policy = SCHED_OTHER; 1286 break; 1287 case LINUX_SCHED_FIFO: 1288 bsd.policy = SCHED_FIFO; 1289 break; 1290 case LINUX_SCHED_RR: 1291 bsd.policy = SCHED_RR; 1292 break; 1293 default: 1294 return EINVAL; 1295 } 1296 return sched_get_priority_min(td, &bsd); 1297 } 1298 1299 #define REBOOT_CAD_ON 0x89abcdef 1300 #define REBOOT_CAD_OFF 0 1301 #define REBOOT_HALT 0xcdef0123 1302 1303 int 1304 linux_reboot(struct thread *td, struct linux_reboot_args *args) 1305 { 1306 struct reboot_args bsd_args; 1307 1308 #ifdef DEBUG 1309 if (ldebug(reboot)) 1310 printf(ARGS(reboot, "0x%x"), args->cmd); 1311 #endif 1312 if (args->cmd == REBOOT_CAD_ON || args->cmd == REBOOT_CAD_OFF) 1313 return (0); 1314 bsd_args.opt = (args->cmd == REBOOT_HALT) ? RB_HALT : 0; 1315 return (reboot(td, &bsd_args)); 1316 } 1317 1318 1319 /* 1320 * The FreeBSD native getpid(2), getgid(2) and getuid(2) also modify 1321 * td->td_retval[1] when COMPAT_43 is defined. This 1322 * globbers registers that are assumed to be preserved. The following 1323 * lightweight syscalls fixes this. See also linux_getgid16() and 1324 * linux_getuid16() in linux_uid16.c. 1325 * 1326 * linux_getpid() - MP SAFE 1327 * linux_getgid() - MP SAFE 1328 * linux_getuid() - MP SAFE 1329 */ 1330 1331 int 1332 linux_getpid(struct thread *td, struct linux_getpid_args *args) 1333 { 1334 struct linux_emuldata *em; 1335 char osrel[LINUX_MAX_UTSNAME]; 1336 1337 linux_get_osrelease(td, osrel); 1338 if (strlen(osrel) >= 3 && osrel[2] == '6') { 1339 em = em_find(td->td_proc, EMUL_UNLOCKED); 1340 KASSERT(em != NULL, ("getpid: emuldata not found.\n")); 1341 td->td_retval[0] = em->shared->group_pid; 1342 EMUL_UNLOCK(&emul_lock); 1343 } else { 1344 PROC_LOCK(td->td_proc); 1345 td->td_retval[0] = td->td_proc->p_pid; 1346 PROC_UNLOCK(td->td_proc); 1347 } 1348 1349 return (0); 1350 } 1351 1352 int 1353 linux_gettid(struct thread *td, struct linux_gettid_args *args) 1354 { 1355 #ifdef DEBUG 1356 if (ldebug(gettid)) 1357 printf(ARGS(gettid, "")); 1358 #endif 1359 1360 td->td_retval[0] = td->td_proc->p_pid; 1361 return (0); 1362 } 1363 1364 1365 int 1366 linux_getppid(struct thread *td, struct linux_getppid_args *args) 1367 { 1368 struct linux_emuldata *em; 1369 struct proc *p, *pp; 1370 char osrel[LINUX_MAX_UTSNAME]; 1371 1372 linux_get_osrelease(td, osrel); 1373 if (strlen(osrel) >= 3 && osrel[2] != '6') { 1374 PROC_LOCK(td->td_proc); 1375 td->td_retval[0] = td->td_proc->p_pptr->p_pid; 1376 PROC_UNLOCK(td->td_proc); 1377 return (0); 1378 } 1379 1380 em = em_find(td->td_proc, EMUL_UNLOCKED); 1381 1382 KASSERT(em != NULL, ("getppid: process emuldata not found.\n")); 1383 1384 /* find the group leader */ 1385 p = pfind(em->shared->group_pid); 1386 1387 if (p == NULL) { 1388 #ifdef DEBUG 1389 printf(LMSG("parent process not found.\n")); 1390 #endif 1391 return (0); 1392 } 1393 1394 pp = p->p_pptr; /* switch to parent */ 1395 PROC_LOCK(pp); 1396 PROC_UNLOCK(p); 1397 1398 /* if its also linux process */ 1399 if (pp->p_sysent == &elf_linux_sysvec) { 1400 em = em_find(pp, EMUL_LOCKED); 1401 KASSERT(em != NULL, ("getppid: parent emuldata not found.\n")); 1402 1403 td->td_retval[0] = em->shared->group_pid; 1404 } else 1405 td->td_retval[0] = pp->p_pid; 1406 1407 EMUL_UNLOCK(&emul_lock); 1408 PROC_UNLOCK(pp); 1409 1410 return (0); 1411 } 1412 1413 int 1414 linux_getgid(struct thread *td, struct linux_getgid_args *args) 1415 { 1416 1417 td->td_retval[0] = td->td_ucred->cr_rgid; 1418 return (0); 1419 } 1420 1421 int 1422 linux_getuid(struct thread *td, struct linux_getuid_args *args) 1423 { 1424 1425 td->td_retval[0] = td->td_ucred->cr_ruid; 1426 return (0); 1427 } 1428 1429 1430 int 1431 linux_getsid(struct thread *td, struct linux_getsid_args *args) 1432 { 1433 struct getsid_args bsd; 1434 bsd.pid = args->pid; 1435 return getsid(td, &bsd); 1436 } 1437 1438 int 1439 linux_nosys(struct thread *td, struct nosys_args *ignore) 1440 { 1441 1442 return (ENOSYS); 1443 } 1444 1445 int 1446 linux_getpriority(struct thread *td, struct linux_getpriority_args *args) 1447 { 1448 struct getpriority_args bsd_args; 1449 int error; 1450 1451 bsd_args.which = args->which; 1452 bsd_args.who = args->who; 1453 error = getpriority(td, &bsd_args); 1454 td->td_retval[0] = 20 - td->td_retval[0]; 1455 return error; 1456 } 1457 1458 int 1459 linux_sethostname(struct thread *td, struct linux_sethostname_args *args) 1460 { 1461 int name[2]; 1462 1463 name[0] = CTL_KERN; 1464 name[1] = KERN_HOSTNAME; 1465 return (userland_sysctl(td, name, 2, 0, 0, 0, args->hostname, 1466 args->len, 0, 0)); 1467 } 1468 1469 int 1470 linux_exit_group(struct thread *td, struct linux_exit_group_args *args) 1471 { 1472 struct linux_emuldata *em, *td_em, *tmp_em; 1473 struct proc *sp; 1474 char osrel[LINUX_MAX_UTSNAME]; 1475 1476 #ifdef DEBUG 1477 if (ldebug(exit_group)) 1478 printf(ARGS(exit_group, "%i"), args->error_code); 1479 #endif 1480 1481 linux_get_osrelease(td, osrel); 1482 if (strlen(osrel) >= 3 && osrel[2] == '6') { 1483 td_em = em_find(td->td_proc, EMUL_UNLOCKED); 1484 1485 KASSERT(td_em != NULL, ("exit_group: emuldata not found.\n")); 1486 1487 EMUL_SHARED_RLOCK(&emul_shared_lock); 1488 LIST_FOREACH_SAFE(em, &td_em->shared->threads, threads, tmp_em) { 1489 if (em->pid == td_em->pid) 1490 continue; 1491 1492 sp = pfind(em->pid); 1493 psignal(sp, SIGKILL); 1494 PROC_UNLOCK(sp); 1495 #ifdef DEBUG 1496 printf(LMSG("linux_sys_exit_group: kill PID %d\n"), em->pid); 1497 #endif 1498 } 1499 1500 EMUL_SHARED_RUNLOCK(&emul_shared_lock); 1501 EMUL_UNLOCK(&emul_lock); 1502 } 1503 1504 exit1(td, W_EXITCODE(args->error_code,0)); 1505 1506 return (0); 1507 } 1508