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