linux_misc.c revision 161317
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: head/sys/compat/linux/linux_misc.c 161317 2006-08-15 15:15:17Z netchild $"); 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 97extern struct sx emul_shared_lock; 98extern struct sx emul_lock; 99 100static unsigned int linux_to_bsd_resource[LINUX_RLIM_NLIMITS] = { 101 RLIMIT_CPU, RLIMIT_FSIZE, RLIMIT_DATA, RLIMIT_STACK, 102 RLIMIT_CORE, RLIMIT_RSS, RLIMIT_NPROC, RLIMIT_NOFILE, 103 RLIMIT_MEMLOCK, -1 104}; 105 106struct l_sysinfo { 107 l_long uptime; /* Seconds since boot */ 108 l_ulong loads[3]; /* 1, 5, and 15 minute load averages */ 109#define LINUX_SYSINFO_LOADS_SCALE 65536 110 l_ulong totalram; /* Total usable main memory size */ 111 l_ulong freeram; /* Available memory size */ 112 l_ulong sharedram; /* Amount of shared memory */ 113 l_ulong bufferram; /* Memory used by buffers */ 114 l_ulong totalswap; /* Total swap space size */ 115 l_ulong freeswap; /* swap space still available */ 116 l_ushort procs; /* Number of current processes */ 117 l_ulong totalbig; 118 l_ulong freebig; 119 l_uint mem_unit; 120 char _f[6]; /* Pads structure to 64 bytes */ 121}; 122int 123linux_sysinfo(struct thread *td, struct linux_sysinfo_args *args) 124{ 125 struct l_sysinfo sysinfo; 126 vm_object_t object; 127 int i, j; 128 struct timespec ts; 129 130 getnanouptime(&ts); 131 if (ts.tv_nsec != 0) 132 ts.tv_sec++; 133 sysinfo.uptime = ts.tv_sec; 134 135 /* Use the information from the mib to get our load averages */ 136 for (i = 0; i < 3; i++) 137 sysinfo.loads[i] = averunnable.ldavg[i] * 138 LINUX_SYSINFO_LOADS_SCALE / averunnable.fscale; 139 140 sysinfo.totalram = physmem * PAGE_SIZE; 141 sysinfo.freeram = sysinfo.totalram - cnt.v_wire_count * PAGE_SIZE; 142 143 sysinfo.sharedram = 0; 144 mtx_lock(&vm_object_list_mtx); 145 TAILQ_FOREACH(object, &vm_object_list, object_list) 146 if (object->shadow_count > 1) 147 sysinfo.sharedram += object->resident_page_count; 148 mtx_unlock(&vm_object_list_mtx); 149 150 sysinfo.sharedram *= PAGE_SIZE; 151 sysinfo.bufferram = 0; 152 153 swap_pager_status(&i, &j); 154 sysinfo.totalswap= i * PAGE_SIZE; 155 sysinfo.freeswap = (i - j) * PAGE_SIZE; 156 157 sysinfo.procs = nprocs; 158 159 /* The following are only present in newer Linux kernels. */ 160 sysinfo.totalbig = 0; 161 sysinfo.freebig = 0; 162 sysinfo.mem_unit = 1; 163 164 return copyout(&sysinfo, args->info, sizeof(sysinfo)); 165} 166 167int 168linux_alarm(struct thread *td, struct linux_alarm_args *args) 169{ 170 struct itimerval it, old_it; 171 int error; 172 173#ifdef DEBUG 174 if (ldebug(alarm)) 175 printf(ARGS(alarm, "%u"), args->secs); 176#endif 177 178 if (args->secs > 100000000) 179 return (EINVAL); 180 181 it.it_value.tv_sec = (long)args->secs; 182 it.it_value.tv_usec = 0; 183 it.it_interval.tv_sec = 0; 184 it.it_interval.tv_usec = 0; 185 error = kern_setitimer(td, ITIMER_REAL, &it, &old_it); 186 if (error) 187 return (error); 188 if (timevalisset(&old_it.it_value)) { 189 if (old_it.it_value.tv_usec != 0) 190 old_it.it_value.tv_sec++; 191 td->td_retval[0] = old_it.it_value.tv_sec; 192 } 193 return (0); 194} 195 196int 197linux_brk(struct thread *td, struct linux_brk_args *args) 198{ 199 struct vmspace *vm = td->td_proc->p_vmspace; 200 vm_offset_t new, old; 201 struct obreak_args /* { 202 char * nsize; 203 } */ tmp; 204 205#ifdef DEBUG 206 if (ldebug(brk)) 207 printf(ARGS(brk, "%p"), (void *)(uintptr_t)args->dsend); 208#endif 209 old = (vm_offset_t)vm->vm_daddr + ctob(vm->vm_dsize); 210 new = (vm_offset_t)args->dsend; 211 tmp.nsize = (char *) new; 212 if (((caddr_t)new > vm->vm_daddr) && !obreak(td, &tmp)) 213 td->td_retval[0] = (long)new; 214 else 215 td->td_retval[0] = (long)old; 216 217 return 0; 218} 219 220#if defined(__i386__) 221/* XXX: what about amd64/linux32? */ 222 223int 224linux_uselib(struct thread *td, struct linux_uselib_args *args) 225{ 226 struct nameidata ni; 227 struct vnode *vp; 228 struct exec *a_out; 229 struct vattr attr; 230 vm_offset_t vmaddr; 231 unsigned long file_offset; 232 vm_offset_t buffer; 233 unsigned long bss_size; 234 char *library; 235 int error; 236 int locked, vfslocked; 237 238 LCONVPATHEXIST(td, args->library, &library); 239 240#ifdef DEBUG 241 if (ldebug(uselib)) 242 printf(ARGS(uselib, "%s"), library); 243#endif 244 245 a_out = NULL; 246 vfslocked = 0; 247 locked = 0; 248 vp = NULL; 249 250 NDINIT(&ni, LOOKUP, ISOPEN | FOLLOW | LOCKLEAF | MPSAFE | AUDITVNODE1, 251 UIO_SYSSPACE, library, td); 252 error = namei(&ni); 253 LFREEPATH(library); 254 if (error) 255 goto cleanup; 256 257 vp = ni.ni_vp; 258 vfslocked = NDHASGIANT(&ni); 259 NDFREE(&ni, NDF_ONLY_PNBUF); 260 261 /* 262 * From here on down, we have a locked vnode that must be unlocked. 263 * XXX: The code below largely duplicates exec_check_permissions(). 264 */ 265 locked = 1; 266 267 /* Writable? */ 268 if (vp->v_writecount) { 269 error = ETXTBSY; 270 goto cleanup; 271 } 272 273 /* Executable? */ 274 error = VOP_GETATTR(vp, &attr, td->td_ucred, td); 275 if (error) 276 goto cleanup; 277 278 if ((vp->v_mount->mnt_flag & MNT_NOEXEC) || 279 ((attr.va_mode & 0111) == 0) || (attr.va_type != VREG)) { 280 /* EACCESS is what exec(2) returns. */ 281 error = ENOEXEC; 282 goto cleanup; 283 } 284 285 /* Sensible size? */ 286 if (attr.va_size == 0) { 287 error = ENOEXEC; 288 goto cleanup; 289 } 290 291 /* Can we access it? */ 292 error = VOP_ACCESS(vp, VEXEC, td->td_ucred, td); 293 if (error) 294 goto cleanup; 295 296 /* 297 * XXX: This should use vn_open() so that it is properly authorized, 298 * and to reduce code redundancy all over the place here. 299 * XXX: Not really, it duplicates far more of exec_check_permissions() 300 * than vn_open(). 301 */ 302#ifdef MAC 303 error = mac_check_vnode_open(td->td_ucred, vp, FREAD); 304 if (error) 305 goto cleanup; 306#endif 307 error = VOP_OPEN(vp, FREAD, td->td_ucred, td, -1); 308 if (error) 309 goto cleanup; 310 311 /* Pull in executable header into kernel_map */ 312 error = vm_mmap(kernel_map, (vm_offset_t *)&a_out, PAGE_SIZE, 313 VM_PROT_READ, VM_PROT_READ, 0, OBJT_VNODE, vp, 0); 314 if (error) 315 goto cleanup; 316 317 /* Is it a Linux binary ? */ 318 if (((a_out->a_magic >> 16) & 0xff) != 0x64) { 319 error = ENOEXEC; 320 goto cleanup; 321 } 322 323 /* 324 * While we are here, we should REALLY do some more checks 325 */ 326 327 /* Set file/virtual offset based on a.out variant. */ 328 switch ((int)(a_out->a_magic & 0xffff)) { 329 case 0413: /* ZMAGIC */ 330 file_offset = 1024; 331 break; 332 case 0314: /* QMAGIC */ 333 file_offset = 0; 334 break; 335 default: 336 error = ENOEXEC; 337 goto cleanup; 338 } 339 340 bss_size = round_page(a_out->a_bss); 341 342 /* Check various fields in header for validity/bounds. */ 343 if (a_out->a_text & PAGE_MASK || a_out->a_data & PAGE_MASK) { 344 error = ENOEXEC; 345 goto cleanup; 346 } 347 348 /* text + data can't exceed file size */ 349 if (a_out->a_data + a_out->a_text > attr.va_size) { 350 error = EFAULT; 351 goto cleanup; 352 } 353 354 /* 355 * text/data/bss must not exceed limits 356 * XXX - this is not complete. it should check current usage PLUS 357 * the resources needed by this library. 358 */ 359 PROC_LOCK(td->td_proc); 360 if (a_out->a_text > maxtsiz || 361 a_out->a_data + bss_size > lim_cur(td->td_proc, RLIMIT_DATA)) { 362 PROC_UNLOCK(td->td_proc); 363 error = ENOMEM; 364 goto cleanup; 365 } 366 PROC_UNLOCK(td->td_proc); 367 368 /* 369 * Prevent more writers. 370 * XXX: Note that if any of the VM operations fail below we don't 371 * clear this flag. 372 */ 373 vp->v_vflag |= VV_TEXT; 374 375 /* 376 * Lock no longer needed 377 */ 378 locked = 0; 379 VOP_UNLOCK(vp, 0, td); 380 VFS_UNLOCK_GIANT(vfslocked); 381 382 /* 383 * Check if file_offset page aligned. Currently we cannot handle 384 * misalinged file offsets, and so we read in the entire image 385 * (what a waste). 386 */ 387 if (file_offset & PAGE_MASK) { 388#ifdef DEBUG 389 printf("uselib: Non page aligned binary %lu\n", file_offset); 390#endif 391 /* Map text+data read/write/execute */ 392 393 /* a_entry is the load address and is page aligned */ 394 vmaddr = trunc_page(a_out->a_entry); 395 396 /* get anon user mapping, read+write+execute */ 397 error = vm_map_find(&td->td_proc->p_vmspace->vm_map, NULL, 0, 398 &vmaddr, a_out->a_text + a_out->a_data, FALSE, VM_PROT_ALL, 399 VM_PROT_ALL, 0); 400 if (error) 401 goto cleanup; 402 403 /* map file into kernel_map */ 404 error = vm_mmap(kernel_map, &buffer, 405 round_page(a_out->a_text + a_out->a_data + file_offset), 406 VM_PROT_READ, VM_PROT_READ, 0, OBJT_VNODE, vp, 407 trunc_page(file_offset)); 408 if (error) 409 goto cleanup; 410 411 /* copy from kernel VM space to user space */ 412 error = copyout(PTRIN(buffer + file_offset), 413 (void *)vmaddr, a_out->a_text + a_out->a_data); 414 415 /* release temporary kernel space */ 416 vm_map_remove(kernel_map, buffer, buffer + 417 round_page(a_out->a_text + a_out->a_data + file_offset)); 418 419 if (error) 420 goto cleanup; 421 } else { 422#ifdef DEBUG 423 printf("uselib: Page aligned binary %lu\n", file_offset); 424#endif 425 /* 426 * for QMAGIC, a_entry is 20 bytes beyond the load address 427 * to skip the executable header 428 */ 429 vmaddr = trunc_page(a_out->a_entry); 430 431 /* 432 * Map it all into the process's space as a single 433 * copy-on-write "data" segment. 434 */ 435 error = vm_mmap(&td->td_proc->p_vmspace->vm_map, &vmaddr, 436 a_out->a_text + a_out->a_data, VM_PROT_ALL, VM_PROT_ALL, 437 MAP_PRIVATE | MAP_FIXED, OBJT_VNODE, vp, file_offset); 438 if (error) 439 goto cleanup; 440 } 441#ifdef DEBUG 442 printf("mem=%08lx = %08lx %08lx\n", (long)vmaddr, ((long*)vmaddr)[0], 443 ((long*)vmaddr)[1]); 444#endif 445 if (bss_size != 0) { 446 /* Calculate BSS start address */ 447 vmaddr = trunc_page(a_out->a_entry) + a_out->a_text + 448 a_out->a_data; 449 450 /* allocate some 'anon' space */ 451 error = vm_map_find(&td->td_proc->p_vmspace->vm_map, NULL, 0, 452 &vmaddr, bss_size, FALSE, VM_PROT_ALL, VM_PROT_ALL, 0); 453 if (error) 454 goto cleanup; 455 } 456 457cleanup: 458 /* Unlock vnode if needed */ 459 if (locked) { 460 VOP_UNLOCK(vp, 0, td); 461 VFS_UNLOCK_GIANT(vfslocked); 462 } 463 464 /* Release the kernel mapping. */ 465 if (a_out) 466 vm_map_remove(kernel_map, (vm_offset_t)a_out, 467 (vm_offset_t)a_out + PAGE_SIZE); 468 469 return error; 470} 471 472#endif /* __i386__ */ 473 474int 475linux_select(struct thread *td, struct linux_select_args *args) 476{ 477 l_timeval ltv; 478 struct timeval tv0, tv1, utv, *tvp; 479 int error; 480 481#ifdef DEBUG 482 if (ldebug(select)) 483 printf(ARGS(select, "%d, %p, %p, %p, %p"), args->nfds, 484 (void *)args->readfds, (void *)args->writefds, 485 (void *)args->exceptfds, (void *)args->timeout); 486#endif 487 488 /* 489 * Store current time for computation of the amount of 490 * time left. 491 */ 492 if (args->timeout) { 493 if ((error = copyin(args->timeout, <v, sizeof(ltv)))) 494 goto select_out; 495 utv.tv_sec = ltv.tv_sec; 496 utv.tv_usec = ltv.tv_usec; 497#ifdef DEBUG 498 if (ldebug(select)) 499 printf(LMSG("incoming timeout (%jd/%ld)"), 500 (intmax_t)utv.tv_sec, utv.tv_usec); 501#endif 502 503 if (itimerfix(&utv)) { 504 /* 505 * The timeval was invalid. Convert it to something 506 * valid that will act as it does under Linux. 507 */ 508 utv.tv_sec += utv.tv_usec / 1000000; 509 utv.tv_usec %= 1000000; 510 if (utv.tv_usec < 0) { 511 utv.tv_sec -= 1; 512 utv.tv_usec += 1000000; 513 } 514 if (utv.tv_sec < 0) 515 timevalclear(&utv); 516 } 517 microtime(&tv0); 518 tvp = &utv; 519 } else 520 tvp = NULL; 521 522 error = kern_select(td, args->nfds, args->readfds, args->writefds, 523 args->exceptfds, tvp); 524 525#ifdef DEBUG 526 if (ldebug(select)) 527 printf(LMSG("real select returns %d"), error); 528#endif 529 if (error) { 530 /* 531 * See fs/select.c in the Linux kernel. Without this, 532 * Maelstrom doesn't work. 533 */ 534 if (error == ERESTART) 535 error = EINTR; 536 goto select_out; 537 } 538 539 if (args->timeout) { 540 if (td->td_retval[0]) { 541 /* 542 * Compute how much time was left of the timeout, 543 * by subtracting the current time and the time 544 * before we started the call, and subtracting 545 * that result from the user-supplied value. 546 */ 547 microtime(&tv1); 548 timevalsub(&tv1, &tv0); 549 timevalsub(&utv, &tv1); 550 if (utv.tv_sec < 0) 551 timevalclear(&utv); 552 } else 553 timevalclear(&utv); 554#ifdef DEBUG 555 if (ldebug(select)) 556 printf(LMSG("outgoing timeout (%jd/%ld)"), 557 (intmax_t)utv.tv_sec, utv.tv_usec); 558#endif 559 ltv.tv_sec = utv.tv_sec; 560 ltv.tv_usec = utv.tv_usec; 561 if ((error = copyout(<v, args->timeout, sizeof(ltv)))) 562 goto select_out; 563 } 564 565select_out: 566#ifdef DEBUG 567 if (ldebug(select)) 568 printf(LMSG("select_out -> %d"), error); 569#endif 570 return error; 571} 572 573int 574linux_mremap(struct thread *td, struct linux_mremap_args *args) 575{ 576 struct munmap_args /* { 577 void *addr; 578 size_t len; 579 } */ bsd_args; 580 int error = 0; 581 582#ifdef DEBUG 583 if (ldebug(mremap)) 584 printf(ARGS(mremap, "%p, %08lx, %08lx, %08lx"), 585 (void *)(uintptr_t)args->addr, 586 (unsigned long)args->old_len, 587 (unsigned long)args->new_len, 588 (unsigned long)args->flags); 589#endif 590 args->new_len = round_page(args->new_len); 591 args->old_len = round_page(args->old_len); 592 593 if (args->new_len > args->old_len) { 594 td->td_retval[0] = 0; 595 return ENOMEM; 596 } 597 598 if (args->new_len < args->old_len) { 599 bsd_args.addr = 600 (caddr_t)((uintptr_t)args->addr + args->new_len); 601 bsd_args.len = args->old_len - args->new_len; 602 error = munmap(td, &bsd_args); 603 } 604 605 td->td_retval[0] = error ? 0 : (uintptr_t)args->addr; 606 return error; 607} 608 609#define LINUX_MS_ASYNC 0x0001 610#define LINUX_MS_INVALIDATE 0x0002 611#define LINUX_MS_SYNC 0x0004 612 613int 614linux_msync(struct thread *td, struct linux_msync_args *args) 615{ 616 struct msync_args bsd_args; 617 618 bsd_args.addr = (caddr_t)(uintptr_t)args->addr; 619 bsd_args.len = (uintptr_t)args->len; 620 bsd_args.flags = args->fl & ~LINUX_MS_SYNC; 621 622 return msync(td, &bsd_args); 623} 624 625int 626linux_time(struct thread *td, struct linux_time_args *args) 627{ 628 struct timeval tv; 629 l_time_t tm; 630 int error; 631 632#ifdef DEBUG 633 if (ldebug(time)) 634 printf(ARGS(time, "*")); 635#endif 636 637 microtime(&tv); 638 tm = tv.tv_sec; 639 if (args->tm && (error = copyout(&tm, args->tm, sizeof(tm)))) 640 return error; 641 td->td_retval[0] = tm; 642 return 0; 643} 644 645struct l_times_argv { 646 l_long tms_utime; 647 l_long tms_stime; 648 l_long tms_cutime; 649 l_long tms_cstime; 650}; 651 652#define CLK_TCK 100 /* Linux uses 100 */ 653 654#define CONVTCK(r) (r.tv_sec * CLK_TCK + r.tv_usec / (1000000 / CLK_TCK)) 655 656int 657linux_times(struct thread *td, struct linux_times_args *args) 658{ 659 struct timeval tv, utime, stime, cutime, cstime; 660 struct l_times_argv tms; 661 struct proc *p; 662 int error; 663 664#ifdef DEBUG 665 if (ldebug(times)) 666 printf(ARGS(times, "*")); 667#endif 668 669 if (args->buf != NULL) { 670 p = td->td_proc; 671 PROC_LOCK(p); 672 calcru(p, &utime, &stime); 673 calccru(p, &cutime, &cstime); 674 PROC_UNLOCK(p); 675 676 tms.tms_utime = CONVTCK(utime); 677 tms.tms_stime = CONVTCK(stime); 678 679 tms.tms_cutime = CONVTCK(cutime); 680 tms.tms_cstime = CONVTCK(cstime); 681 682 if ((error = copyout(&tms, args->buf, sizeof(tms)))) 683 return error; 684 } 685 686 microuptime(&tv); 687 td->td_retval[0] = (int)CONVTCK(tv); 688 return 0; 689} 690 691int 692linux_newuname(struct thread *td, struct linux_newuname_args *args) 693{ 694 struct l_new_utsname utsname; 695 char osname[LINUX_MAX_UTSNAME]; 696 char osrelease[LINUX_MAX_UTSNAME]; 697 char *p; 698 699#ifdef DEBUG 700 if (ldebug(newuname)) 701 printf(ARGS(newuname, "*")); 702#endif 703 704 linux_get_osname(td, osname); 705 linux_get_osrelease(td, osrelease); 706 707 bzero(&utsname, sizeof(utsname)); 708 strlcpy(utsname.sysname, osname, LINUX_MAX_UTSNAME); 709 getcredhostname(td->td_ucred, utsname.nodename, LINUX_MAX_UTSNAME); 710 strlcpy(utsname.release, osrelease, LINUX_MAX_UTSNAME); 711 strlcpy(utsname.version, version, LINUX_MAX_UTSNAME); 712 for (p = utsname.version; *p != '\0'; ++p) 713 if (*p == '\n') { 714 *p = '\0'; 715 break; 716 } 717#ifdef __i386__ 718 { 719 const char *class; 720 switch (cpu_class) { 721 case CPUCLASS_686: 722 class = "i686"; 723 break; 724 case CPUCLASS_586: 725 class = "i586"; 726 break; 727 case CPUCLASS_486: 728 class = "i486"; 729 break; 730 default: 731 class = "i386"; 732 } 733 strlcpy(utsname.machine, class, LINUX_MAX_UTSNAME); 734 } 735#elif defined(__amd64__) /* XXX: Linux can change 'personality'. */ 736#ifdef COMPAT_LINUX32 737 strlcpy(utsname.machine, "i686", LINUX_MAX_UTSNAME); 738#else 739 strlcpy(utsname.machine, "x86_64", LINUX_MAX_UTSNAME); 740#endif /* COMPAT_LINUX32 */ 741#else /* something other than i386 or amd64 - assume we and Linux agree */ 742 strlcpy(utsname.machine, machine, LINUX_MAX_UTSNAME); 743#endif /* __i386__ */ 744 strlcpy(utsname.domainname, domainname, LINUX_MAX_UTSNAME); 745 746 return (copyout(&utsname, args->buf, sizeof(utsname))); 747} 748 749#if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32)) 750struct l_utimbuf { 751 l_time_t l_actime; 752 l_time_t l_modtime; 753}; 754 755int 756linux_utime(struct thread *td, struct linux_utime_args *args) 757{ 758 struct timeval tv[2], *tvp; 759 struct l_utimbuf lut; 760 char *fname; 761 int error; 762 763 LCONVPATHEXIST(td, args->fname, &fname); 764 765#ifdef DEBUG 766 if (ldebug(utime)) 767 printf(ARGS(utime, "%s, *"), fname); 768#endif 769 770 if (args->times) { 771 if ((error = copyin(args->times, &lut, sizeof lut))) { 772 LFREEPATH(fname); 773 return error; 774 } 775 tv[0].tv_sec = lut.l_actime; 776 tv[0].tv_usec = 0; 777 tv[1].tv_sec = lut.l_modtime; 778 tv[1].tv_usec = 0; 779 tvp = tv; 780 } else 781 tvp = NULL; 782 783 error = kern_utimes(td, fname, UIO_SYSSPACE, tvp, UIO_SYSSPACE); 784 LFREEPATH(fname); 785 return (error); 786} 787#endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */ 788 789#define __WCLONE 0x80000000 790 791int 792linux_waitpid(struct thread *td, struct linux_waitpid_args *args) 793{ 794 int error, options, tmpstat; 795 796#ifdef DEBUG 797 if (ldebug(waitpid)) 798 printf(ARGS(waitpid, "%d, %p, %d"), 799 args->pid, (void *)args->status, args->options); 800#endif 801 802 options = (args->options & (WNOHANG | WUNTRACED)); 803 /* WLINUXCLONE should be equal to __WCLONE, but we make sure */ 804 if (args->options & __WCLONE) 805 options |= WLINUXCLONE; 806 807 error = kern_wait(td, args->pid, &tmpstat, options, NULL); 808 if (error) 809 return error; 810 811 if (args->status) { 812 tmpstat &= 0xffff; 813 if (WIFSIGNALED(tmpstat)) 814 tmpstat = (tmpstat & 0xffffff80) | 815 BSD_TO_LINUX_SIGNAL(WTERMSIG(tmpstat)); 816 else if (WIFSTOPPED(tmpstat)) 817 tmpstat = (tmpstat & 0xffff00ff) | 818 (BSD_TO_LINUX_SIGNAL(WSTOPSIG(tmpstat)) << 8); 819 return copyout(&tmpstat, args->status, sizeof(int)); 820 } 821 822 return 0; 823} 824 825int 826linux_wait4(struct thread *td, struct linux_wait4_args *args) 827{ 828 int error, options, tmpstat; 829 struct rusage ru, *rup; 830 struct proc *p; 831 832#ifdef DEBUG 833 if (ldebug(wait4)) 834 printf(ARGS(wait4, "%d, %p, %d, %p"), 835 args->pid, (void *)args->status, args->options, 836 (void *)args->rusage); 837#endif 838 839 options = (args->options & (WNOHANG | WUNTRACED)); 840 /* WLINUXCLONE should be equal to __WCLONE, but we make sure */ 841 if (args->options & __WCLONE) 842 options |= WLINUXCLONE; 843 844 if (args->rusage != NULL) 845 rup = &ru; 846 else 847 rup = NULL; 848 error = kern_wait(td, args->pid, &tmpstat, options, rup); 849 if (error) 850 return error; 851 852 p = td->td_proc; 853 PROC_LOCK(p); 854 sigqueue_delete(&p->p_sigqueue, SIGCHLD); 855 PROC_UNLOCK(p); 856 857 if (args->status) { 858 tmpstat &= 0xffff; 859 if (WIFSIGNALED(tmpstat)) 860 tmpstat = (tmpstat & 0xffffff80) | 861 BSD_TO_LINUX_SIGNAL(WTERMSIG(tmpstat)); 862 else if (WIFSTOPPED(tmpstat)) 863 tmpstat = (tmpstat & 0xffff00ff) | 864 (BSD_TO_LINUX_SIGNAL(WSTOPSIG(tmpstat)) << 8); 865 error = copyout(&tmpstat, args->status, sizeof(int)); 866 } 867 if (args->rusage != NULL && error == 0) 868 error = copyout(&ru, args->rusage, sizeof(ru)); 869 870 return (error); 871} 872 873int 874linux_mknod(struct thread *td, struct linux_mknod_args *args) 875{ 876 char *path; 877 int error; 878 879 LCONVPATHCREAT(td, args->path, &path); 880 881#ifdef DEBUG 882 if (ldebug(mknod)) 883 printf(ARGS(mknod, "%s, %d, %d"), path, args->mode, args->dev); 884#endif 885 886 if (args->mode & S_IFIFO) 887 error = kern_mkfifo(td, path, UIO_SYSSPACE, args->mode); 888 else 889 error = kern_mknod(td, path, UIO_SYSSPACE, args->mode, 890 args->dev); 891 LFREEPATH(path); 892 return (error); 893} 894 895/* 896 * UGH! This is just about the dumbest idea I've ever heard!! 897 */ 898int 899linux_personality(struct thread *td, struct linux_personality_args *args) 900{ 901#ifdef DEBUG 902 if (ldebug(personality)) 903 printf(ARGS(personality, "%lu"), (unsigned long)args->per); 904#endif 905 if (args->per != 0) 906 return EINVAL; 907 908 /* Yes Jim, it's still a Linux... */ 909 td->td_retval[0] = 0; 910 return 0; 911} 912 913struct l_itimerval { 914 l_timeval it_interval; 915 l_timeval it_value; 916}; 917 918#define B2L_ITIMERVAL(bip, lip) \ 919 (bip)->it_interval.tv_sec = (lip)->it_interval.tv_sec; \ 920 (bip)->it_interval.tv_usec = (lip)->it_interval.tv_usec; \ 921 (bip)->it_value.tv_sec = (lip)->it_value.tv_sec; \ 922 (bip)->it_value.tv_usec = (lip)->it_value.tv_usec; 923 924int 925linux_setitimer(struct thread *td, struct linux_setitimer_args *uap) 926{ 927 int error; 928 struct l_itimerval ls; 929 struct itimerval aitv, oitv; 930 931#ifdef DEBUG 932 if (ldebug(setitimer)) 933 printf(ARGS(setitimer, "%p, %p"), 934 (void *)uap->itv, (void *)uap->oitv); 935#endif 936 937 if (uap->itv == NULL) { 938 uap->itv = uap->oitv; 939 return (linux_getitimer(td, (struct linux_getitimer_args *)uap)); 940 } 941 942 error = copyin(uap->itv, &ls, sizeof(ls)); 943 if (error != 0) 944 return (error); 945 B2L_ITIMERVAL(&aitv, &ls); 946#ifdef DEBUG 947 if (ldebug(setitimer)) { 948 printf("setitimer: value: sec: %jd, usec: %ld\n", 949 (intmax_t)aitv.it_value.tv_sec, aitv.it_value.tv_usec); 950 printf("setitimer: interval: sec: %jd, usec: %ld\n", 951 (intmax_t)aitv.it_interval.tv_sec, aitv.it_interval.tv_usec); 952 } 953#endif 954 error = kern_setitimer(td, uap->which, &aitv, &oitv); 955 if (error != 0 || uap->oitv == NULL) 956 return (error); 957 B2L_ITIMERVAL(&ls, &oitv); 958 959 return (copyout(&ls, uap->oitv, sizeof(ls))); 960} 961 962int 963linux_getitimer(struct thread *td, struct linux_getitimer_args *uap) 964{ 965 int error; 966 struct l_itimerval ls; 967 struct itimerval aitv; 968 969#ifdef DEBUG 970 if (ldebug(getitimer)) 971 printf(ARGS(getitimer, "%p"), (void *)uap->itv); 972#endif 973 error = kern_getitimer(td, uap->which, &aitv); 974 if (error != 0) 975 return (error); 976 B2L_ITIMERVAL(&ls, &aitv); 977 return (copyout(&ls, uap->itv, sizeof(ls))); 978} 979 980int 981linux_nice(struct thread *td, struct linux_nice_args *args) 982{ 983 struct setpriority_args bsd_args; 984 985 bsd_args.which = PRIO_PROCESS; 986 bsd_args.who = 0; /* current process */ 987 bsd_args.prio = args->inc; 988 return setpriority(td, &bsd_args); 989} 990 991int 992linux_setgroups(struct thread *td, struct linux_setgroups_args *args) 993{ 994 struct ucred *newcred, *oldcred; 995 l_gid_t linux_gidset[NGROUPS]; 996 gid_t *bsd_gidset; 997 int ngrp, error; 998 struct proc *p; 999 1000 ngrp = args->gidsetsize; 1001 if (ngrp < 0 || ngrp >= NGROUPS) 1002 return (EINVAL); 1003 error = copyin(args->grouplist, linux_gidset, ngrp * sizeof(l_gid_t)); 1004 if (error) 1005 return (error); 1006 newcred = crget(); 1007 p = td->td_proc; 1008 PROC_LOCK(p); 1009 oldcred = p->p_ucred; 1010 1011 /* 1012 * cr_groups[0] holds egid. Setting the whole set from 1013 * the supplied set will cause egid to be changed too. 1014 * Keep cr_groups[0] unchanged to prevent that. 1015 */ 1016 1017 if ((error = suser_cred(oldcred, SUSER_ALLOWJAIL)) != 0) { 1018 PROC_UNLOCK(p); 1019 crfree(newcred); 1020 return (error); 1021 } 1022 1023 crcopy(newcred, oldcred); 1024 if (ngrp > 0) { 1025 newcred->cr_ngroups = ngrp + 1; 1026 1027 bsd_gidset = newcred->cr_groups; 1028 ngrp--; 1029 while (ngrp >= 0) { 1030 bsd_gidset[ngrp + 1] = linux_gidset[ngrp]; 1031 ngrp--; 1032 } 1033 } 1034 else 1035 newcred->cr_ngroups = 1; 1036 1037 setsugid(p); 1038 p->p_ucred = newcred; 1039 PROC_UNLOCK(p); 1040 crfree(oldcred); 1041 return (0); 1042} 1043 1044int 1045linux_getgroups(struct thread *td, struct linux_getgroups_args *args) 1046{ 1047 struct ucred *cred; 1048 l_gid_t linux_gidset[NGROUPS]; 1049 gid_t *bsd_gidset; 1050 int bsd_gidsetsz, ngrp, error; 1051 1052 cred = td->td_ucred; 1053 bsd_gidset = cred->cr_groups; 1054 bsd_gidsetsz = cred->cr_ngroups - 1; 1055 1056 /* 1057 * cr_groups[0] holds egid. Returning the whole set 1058 * here will cause a duplicate. Exclude cr_groups[0] 1059 * to prevent that. 1060 */ 1061 1062 if ((ngrp = args->gidsetsize) == 0) { 1063 td->td_retval[0] = bsd_gidsetsz; 1064 return (0); 1065 } 1066 1067 if (ngrp < bsd_gidsetsz) 1068 return (EINVAL); 1069 1070 ngrp = 0; 1071 while (ngrp < bsd_gidsetsz) { 1072 linux_gidset[ngrp] = bsd_gidset[ngrp + 1]; 1073 ngrp++; 1074 } 1075 1076 if ((error = copyout(linux_gidset, args->grouplist, 1077 ngrp * sizeof(l_gid_t)))) 1078 return (error); 1079 1080 td->td_retval[0] = ngrp; 1081 return (0); 1082} 1083 1084int 1085linux_setrlimit(struct thread *td, struct linux_setrlimit_args *args) 1086{ 1087 struct rlimit bsd_rlim; 1088 struct l_rlimit rlim; 1089 u_int which; 1090 int error; 1091 1092#ifdef DEBUG 1093 if (ldebug(setrlimit)) 1094 printf(ARGS(setrlimit, "%d, %p"), 1095 args->resource, (void *)args->rlim); 1096#endif 1097 1098 if (args->resource >= LINUX_RLIM_NLIMITS) 1099 return (EINVAL); 1100 1101 which = linux_to_bsd_resource[args->resource]; 1102 if (which == -1) 1103 return (EINVAL); 1104 1105 error = copyin(args->rlim, &rlim, sizeof(rlim)); 1106 if (error) 1107 return (error); 1108 1109 bsd_rlim.rlim_cur = (rlim_t)rlim.rlim_cur; 1110 bsd_rlim.rlim_max = (rlim_t)rlim.rlim_max; 1111 return (kern_setrlimit(td, which, &bsd_rlim)); 1112} 1113 1114int 1115linux_old_getrlimit(struct thread *td, struct linux_old_getrlimit_args *args) 1116{ 1117 struct l_rlimit rlim; 1118 struct proc *p = td->td_proc; 1119 struct rlimit bsd_rlim; 1120 u_int which; 1121 1122#ifdef DEBUG 1123 if (ldebug(old_getrlimit)) 1124 printf(ARGS(old_getrlimit, "%d, %p"), 1125 args->resource, (void *)args->rlim); 1126#endif 1127 1128 if (args->resource >= LINUX_RLIM_NLIMITS) 1129 return (EINVAL); 1130 1131 which = linux_to_bsd_resource[args->resource]; 1132 if (which == -1) 1133 return (EINVAL); 1134 1135 PROC_LOCK(p); 1136 lim_rlimit(p, which, &bsd_rlim); 1137 PROC_UNLOCK(p); 1138 1139#ifdef COMPAT_LINUX32 1140 rlim.rlim_cur = (unsigned int)bsd_rlim.rlim_cur; 1141 if (rlim.rlim_cur == UINT_MAX) 1142 rlim.rlim_cur = INT_MAX; 1143 rlim.rlim_max = (unsigned int)bsd_rlim.rlim_max; 1144 if (rlim.rlim_max == UINT_MAX) 1145 rlim.rlim_max = INT_MAX; 1146#else 1147 rlim.rlim_cur = (unsigned long)bsd_rlim.rlim_cur; 1148 if (rlim.rlim_cur == ULONG_MAX) 1149 rlim.rlim_cur = LONG_MAX; 1150 rlim.rlim_max = (unsigned long)bsd_rlim.rlim_max; 1151 if (rlim.rlim_max == ULONG_MAX) 1152 rlim.rlim_max = LONG_MAX; 1153#endif 1154 return (copyout(&rlim, args->rlim, sizeof(rlim))); 1155} 1156 1157int 1158linux_getrlimit(struct thread *td, struct linux_getrlimit_args *args) 1159{ 1160 struct l_rlimit rlim; 1161 struct proc *p = td->td_proc; 1162 struct rlimit bsd_rlim; 1163 u_int which; 1164 1165#ifdef DEBUG 1166 if (ldebug(getrlimit)) 1167 printf(ARGS(getrlimit, "%d, %p"), 1168 args->resource, (void *)args->rlim); 1169#endif 1170 1171 if (args->resource >= LINUX_RLIM_NLIMITS) 1172 return (EINVAL); 1173 1174 which = linux_to_bsd_resource[args->resource]; 1175 if (which == -1) 1176 return (EINVAL); 1177 1178 PROC_LOCK(p); 1179 lim_rlimit(p, which, &bsd_rlim); 1180 PROC_UNLOCK(p); 1181 1182 rlim.rlim_cur = (l_ulong)bsd_rlim.rlim_cur; 1183 rlim.rlim_max = (l_ulong)bsd_rlim.rlim_max; 1184 return (copyout(&rlim, args->rlim, sizeof(rlim))); 1185} 1186 1187int 1188linux_sched_setscheduler(struct thread *td, 1189 struct linux_sched_setscheduler_args *args) 1190{ 1191 struct sched_setscheduler_args bsd; 1192 1193#ifdef DEBUG 1194 if (ldebug(sched_setscheduler)) 1195 printf(ARGS(sched_setscheduler, "%d, %d, %p"), 1196 args->pid, args->policy, (const void *)args->param); 1197#endif 1198 1199 switch (args->policy) { 1200 case LINUX_SCHED_OTHER: 1201 bsd.policy = SCHED_OTHER; 1202 break; 1203 case LINUX_SCHED_FIFO: 1204 bsd.policy = SCHED_FIFO; 1205 break; 1206 case LINUX_SCHED_RR: 1207 bsd.policy = SCHED_RR; 1208 break; 1209 default: 1210 return EINVAL; 1211 } 1212 1213 bsd.pid = args->pid; 1214 bsd.param = (struct sched_param *)args->param; 1215 return sched_setscheduler(td, &bsd); 1216} 1217 1218int 1219linux_sched_getscheduler(struct thread *td, 1220 struct linux_sched_getscheduler_args *args) 1221{ 1222 struct sched_getscheduler_args bsd; 1223 int error; 1224 1225#ifdef DEBUG 1226 if (ldebug(sched_getscheduler)) 1227 printf(ARGS(sched_getscheduler, "%d"), args->pid); 1228#endif 1229 1230 bsd.pid = args->pid; 1231 error = sched_getscheduler(td, &bsd); 1232 1233 switch (td->td_retval[0]) { 1234 case SCHED_OTHER: 1235 td->td_retval[0] = LINUX_SCHED_OTHER; 1236 break; 1237 case SCHED_FIFO: 1238 td->td_retval[0] = LINUX_SCHED_FIFO; 1239 break; 1240 case SCHED_RR: 1241 td->td_retval[0] = LINUX_SCHED_RR; 1242 break; 1243 } 1244 1245 return error; 1246} 1247 1248int 1249linux_sched_get_priority_max(struct thread *td, 1250 struct linux_sched_get_priority_max_args *args) 1251{ 1252 struct sched_get_priority_max_args bsd; 1253 1254#ifdef DEBUG 1255 if (ldebug(sched_get_priority_max)) 1256 printf(ARGS(sched_get_priority_max, "%d"), args->policy); 1257#endif 1258 1259 switch (args->policy) { 1260 case LINUX_SCHED_OTHER: 1261 bsd.policy = SCHED_OTHER; 1262 break; 1263 case LINUX_SCHED_FIFO: 1264 bsd.policy = SCHED_FIFO; 1265 break; 1266 case LINUX_SCHED_RR: 1267 bsd.policy = SCHED_RR; 1268 break; 1269 default: 1270 return EINVAL; 1271 } 1272 return sched_get_priority_max(td, &bsd); 1273} 1274 1275int 1276linux_sched_get_priority_min(struct thread *td, 1277 struct linux_sched_get_priority_min_args *args) 1278{ 1279 struct sched_get_priority_min_args bsd; 1280 1281#ifdef DEBUG 1282 if (ldebug(sched_get_priority_min)) 1283 printf(ARGS(sched_get_priority_min, "%d"), args->policy); 1284#endif 1285 1286 switch (args->policy) { 1287 case LINUX_SCHED_OTHER: 1288 bsd.policy = SCHED_OTHER; 1289 break; 1290 case LINUX_SCHED_FIFO: 1291 bsd.policy = SCHED_FIFO; 1292 break; 1293 case LINUX_SCHED_RR: 1294 bsd.policy = SCHED_RR; 1295 break; 1296 default: 1297 return EINVAL; 1298 } 1299 return sched_get_priority_min(td, &bsd); 1300} 1301 1302#define REBOOT_CAD_ON 0x89abcdef 1303#define REBOOT_CAD_OFF 0 1304#define REBOOT_HALT 0xcdef0123 1305 1306int 1307linux_reboot(struct thread *td, struct linux_reboot_args *args) 1308{ 1309 struct reboot_args bsd_args; 1310 1311#ifdef DEBUG 1312 if (ldebug(reboot)) 1313 printf(ARGS(reboot, "0x%x"), args->cmd); 1314#endif 1315 if (args->cmd == REBOOT_CAD_ON || args->cmd == REBOOT_CAD_OFF) 1316 return (0); 1317 bsd_args.opt = (args->cmd == REBOOT_HALT) ? RB_HALT : 0; 1318 return (reboot(td, &bsd_args)); 1319} 1320 1321 1322/* 1323 * The FreeBSD native getpid(2), getgid(2) and getuid(2) also modify 1324 * td->td_retval[1] when COMPAT_43 is defined. This 1325 * globbers registers that are assumed to be preserved. The following 1326 * lightweight syscalls fixes this. See also linux_getgid16() and 1327 * linux_getuid16() in linux_uid16.c. 1328 * 1329 * linux_getpid() - MP SAFE 1330 * linux_getgid() - MP SAFE 1331 * linux_getuid() - MP SAFE 1332 */ 1333 1334int 1335linux_getpid(struct thread *td, struct linux_getpid_args *args) 1336{ 1337#ifdef __i386__ 1338 struct linux_emuldata *em; 1339 1340 em = em_find(td->td_proc, EMUL_UNLOCKED); 1341 1342 KASSERT(em != NULL, ("getpid: emuldata not found.\n")); 1343 1344 td->td_retval[0] = em->shared->group_pid; 1345 EMUL_UNLOCK(&emul_lock); 1346#else 1347 td->td_retval[0] = td->td_proc->p_pid; 1348#endif 1349 return (0); 1350} 1351 1352int 1353linux_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 1365int 1366linux_getppid(struct thread *td, struct linux_getppid_args *args) 1367{ 1368#ifdef __i386__ 1369 struct linux_emuldata *em; 1370 struct proc *p, *pp; 1371 1372 em = em_find(td->td_proc, EMUL_UNLOCKED); 1373 1374 KASSERT(em != NULL, ("getppid: process emuldata not found.\n")); 1375 1376 /* find the group leader */ 1377 p = pfind(em->shared->group_pid); 1378 1379 if (p == NULL) { 1380#ifdef DEBUG 1381 printf(LMSG("parent process not found.\n")); 1382#endif 1383 return (0); 1384 } 1385 1386 pp = p->p_pptr; /* switch to parent */ 1387 PROC_LOCK(pp); 1388 PROC_UNLOCK(p); 1389 1390 /* if its also linux process */ 1391 if (pp->p_sysent == &elf_linux_sysvec) { 1392 em = em_find(pp, EMUL_LOCKED); 1393 KASSERT(em != NULL, ("getppid: parent emuldata not found.\n")); 1394 1395 td->td_retval[0] = em->shared->group_pid; 1396 } else 1397 td->td_retval[0] = pp->p_pid; 1398 1399 EMUL_UNLOCK(&emul_lock); 1400 PROC_UNLOCK(pp); 1401#else 1402 return getppid(td, (struct getppid_args *) args); 1403#endif 1404 return (0); 1405} 1406 1407int 1408linux_getgid(struct thread *td, struct linux_getgid_args *args) 1409{ 1410 1411 td->td_retval[0] = td->td_ucred->cr_rgid; 1412 return (0); 1413} 1414 1415int 1416linux_getuid(struct thread *td, struct linux_getuid_args *args) 1417{ 1418 1419 td->td_retval[0] = td->td_ucred->cr_ruid; 1420 return (0); 1421} 1422 1423 1424int 1425linux_getsid(struct thread *td, struct linux_getsid_args *args) 1426{ 1427 struct getsid_args bsd; 1428 bsd.pid = args->pid; 1429 return getsid(td, &bsd); 1430} 1431 1432int 1433linux_nosys(struct thread *td, struct nosys_args *ignore) 1434{ 1435 1436 return (ENOSYS); 1437} 1438 1439int 1440linux_getpriority(struct thread *td, struct linux_getpriority_args *args) 1441{ 1442 struct getpriority_args bsd_args; 1443 int error; 1444 1445 bsd_args.which = args->which; 1446 bsd_args.who = args->who; 1447 error = getpriority(td, &bsd_args); 1448 td->td_retval[0] = 20 - td->td_retval[0]; 1449 return error; 1450} 1451 1452int 1453linux_sethostname(struct thread *td, struct linux_sethostname_args *args) 1454{ 1455 int name[2]; 1456 int error; 1457 1458 name[0] = CTL_KERN; 1459 name[1] = KERN_HOSTNAME; 1460 if ((error = suser_cred(td->td_ucred, SUSER_ALLOWJAIL))) 1461 return (error); 1462 return (userland_sysctl(td, name, 2, 0, 0, 0, args->hostname, 1463 args->len, 0, 0)); 1464} 1465 1466int 1467linux_exit_group(struct thread *td, struct linux_exit_group_args *args) 1468{ 1469 struct linux_emuldata *em, *td_em, *tmp_em; 1470 struct proc *sp; 1471 1472#ifdef DEBUG 1473 if (ldebug(exit_group)) 1474 printf(ARGS(exit_group, "%i"), args->error_code); 1475#endif 1476 1477 td_em = em_find(td->td_proc, EMUL_UNLOCKED); 1478 1479 KASSERT(td_em != NULL, ("exit_group: emuldata not found.\n")); 1480 1481 EMUL_SHARED_RLOCK(&emul_shared_lock); 1482 LIST_FOREACH_SAFE(em, &td_em->shared->threads, threads, tmp_em) { 1483 if (em->pid == td_em->pid) 1484 continue; 1485 1486 sp = pfind(em->pid); 1487 psignal(sp, SIGKILL); 1488 PROC_UNLOCK(sp); 1489#ifdef DEBUG 1490 printf(LMSG("linux_sys_exit_group: kill PID %d\n"), em->pid); 1491#endif 1492 } 1493 1494 EMUL_SHARED_RUNLOCK(&emul_shared_lock); 1495 EMUL_UNLOCK(&emul_lock); 1496 1497 exit1(td, W_EXITCODE(args->error_code,0)); 1498 1499 return (0); 1500} 1501 1502