32
33#include "opt_compat.h"
34
35#include <sys/param.h>
36#include <sys/blist.h>
37#include <sys/fcntl.h>
38#if defined(__i386__)
39#include <sys/imgact_aout.h>
40#endif
41#include <sys/jail.h>
42#include <sys/kernel.h>
43#include <sys/limits.h>
44#include <sys/lock.h>
45#include <sys/malloc.h>
46#include <sys/mman.h>
47#include <sys/mount.h>
48#include <sys/mutex.h>
49#include <sys/namei.h>
50#include <sys/priv.h>
51#include <sys/proc.h>
52#include <sys/reboot.h>
53#include <sys/resourcevar.h>
54#include <sys/sched.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#include <sys/cpuset.h>
66
67#include <security/mac/mac_framework.h>
68
69#include <vm/vm.h>
70#include <vm/pmap.h>
71#include <vm/vm_kern.h>
72#include <vm/vm_map.h>
73#include <vm/vm_extern.h>
74#include <vm/vm_object.h>
75#include <vm/swap_pager.h>
76
77#ifdef COMPAT_LINUX32
78#include <machine/../linux32/linux.h>
79#include <machine/../linux32/linux32_proto.h>
80#else
81#include <machine/../linux/linux.h>
82#include <machine/../linux/linux_proto.h>
83#endif
84
85#include <compat/linux/linux_file.h>
86#include <compat/linux/linux_mib.h>
87#include <compat/linux/linux_signal.h>
88#include <compat/linux/linux_util.h>
89#include <compat/linux/linux_sysproto.h>
90#include <compat/linux/linux_emul.h>
91#include <compat/linux/linux_misc.h>
92
93int stclohz; /* Statistics clock frequency */
94
95#define BSD_TO_LINUX_SIGNAL(sig) \
96 (((sig) <= LINUX_SIGTBLSZ) ? bsd_to_linux_signal[_SIG_IDX(sig)] : sig)
97
98static unsigned int linux_to_bsd_resource[LINUX_RLIM_NLIMITS] = {
99 RLIMIT_CPU, RLIMIT_FSIZE, RLIMIT_DATA, RLIMIT_STACK,
100 RLIMIT_CORE, RLIMIT_RSS, RLIMIT_NPROC, RLIMIT_NOFILE,
101 RLIMIT_MEMLOCK, RLIMIT_AS
102};
103
104struct l_sysinfo {
105 l_long uptime; /* Seconds since boot */
106 l_ulong loads[3]; /* 1, 5, and 15 minute load averages */
107#define LINUX_SYSINFO_LOADS_SCALE 65536
108 l_ulong totalram; /* Total usable main memory size */
109 l_ulong freeram; /* Available memory size */
110 l_ulong sharedram; /* Amount of shared memory */
111 l_ulong bufferram; /* Memory used by buffers */
112 l_ulong totalswap; /* Total swap space size */
113 l_ulong freeswap; /* swap space still available */
114 l_ushort procs; /* Number of current processes */
115 l_ushort pads;
116 l_ulong totalbig;
117 l_ulong freebig;
118 l_uint mem_unit;
119 char _f[20-2*sizeof(l_long)-sizeof(l_int)]; /* padding */
120};
121int
122linux_sysinfo(struct thread *td, struct linux_sysinfo_args *args)
123{
124 struct l_sysinfo sysinfo;
125 vm_object_t object;
126 int i, j;
127 struct timespec ts;
128
129 getnanouptime(&ts);
130 if (ts.tv_nsec != 0)
131 ts.tv_sec++;
132 sysinfo.uptime = ts.tv_sec;
133
134 /* Use the information from the mib to get our load averages */
135 for (i = 0; i < 3; i++)
136 sysinfo.loads[i] = averunnable.ldavg[i] *
137 LINUX_SYSINFO_LOADS_SCALE / averunnable.fscale;
138
139 sysinfo.totalram = physmem * PAGE_SIZE;
140 sysinfo.freeram = sysinfo.totalram - cnt.v_wire_count * PAGE_SIZE;
141
142 sysinfo.sharedram = 0;
143 mtx_lock(&vm_object_list_mtx);
144 TAILQ_FOREACH(object, &vm_object_list, object_list)
145 if (object->shadow_count > 1)
146 sysinfo.sharedram += object->resident_page_count;
147 mtx_unlock(&vm_object_list_mtx);
148
149 sysinfo.sharedram *= PAGE_SIZE;
150 sysinfo.bufferram = 0;
151
152 swap_pager_status(&i, &j);
153 sysinfo.totalswap = i * PAGE_SIZE;
154 sysinfo.freeswap = (i - j) * PAGE_SIZE;
155
156 sysinfo.procs = nprocs;
157
158 /* The following are only present in newer Linux kernels. */
159 sysinfo.totalbig = 0;
160 sysinfo.freebig = 0;
161 sysinfo.mem_unit = 1;
162
163 return copyout(&sysinfo, args->info, sizeof(sysinfo));
164}
165
166int
167linux_alarm(struct thread *td, struct linux_alarm_args *args)
168{
169 struct itimerval it, old_it;
170 u_int secs;
171 int error;
172
173#ifdef DEBUG
174 if (ldebug(alarm))
175 printf(ARGS(alarm, "%u"), args->secs);
176#endif
177
178 secs = args->secs;
179
180 if (secs > INT_MAX)
181 secs = INT_MAX;
182
183 it.it_value.tv_sec = (long) secs;
184 it.it_value.tv_usec = 0;
185 it.it_interval.tv_sec = 0;
186 it.it_interval.tv_usec = 0;
187 error = kern_setitimer(td, ITIMER_REAL, &it, &old_it);
188 if (error)
189 return (error);
190 if (timevalisset(&old_it.it_value)) {
191 if (old_it.it_value.tv_usec != 0)
192 old_it.it_value.tv_sec++;
193 td->td_retval[0] = old_it.it_value.tv_sec;
194 }
195 return (0);
196}
197
198int
199linux_brk(struct thread *td, struct linux_brk_args *args)
200{
201 struct vmspace *vm = td->td_proc->p_vmspace;
202 vm_offset_t new, old;
203 struct obreak_args /* {
204 char * nsize;
205 } */ tmp;
206
207#ifdef DEBUG
208 if (ldebug(brk))
209 printf(ARGS(brk, "%p"), (void *)(uintptr_t)args->dsend);
210#endif
211 old = (vm_offset_t)vm->vm_daddr + ctob(vm->vm_dsize);
212 new = (vm_offset_t)args->dsend;
213 tmp.nsize = (char *)new;
214 if (((caddr_t)new > vm->vm_daddr) && !obreak(td, &tmp))
215 td->td_retval[0] = (long)new;
216 else
217 td->td_retval[0] = (long)old;
218
219 return 0;
220}
221
222#if defined(__i386__)
223/* XXX: what about amd64/linux32? */
224
225int
226linux_uselib(struct thread *td, struct linux_uselib_args *args)
227{
228 struct nameidata ni;
229 struct vnode *vp;
230 struct exec *a_out;
231 struct vattr attr;
232 vm_offset_t vmaddr;
233 unsigned long file_offset;
234 vm_offset_t buffer;
235 unsigned long bss_size;
236 char *library;
237 int error;
238 int locked, vfslocked;
239
240 LCONVPATHEXIST(td, args->library, &library);
241
242#ifdef DEBUG
243 if (ldebug(uselib))
244 printf(ARGS(uselib, "%s"), library);
245#endif
246
247 a_out = NULL;
248 vfslocked = 0;
249 locked = 0;
250 vp = NULL;
251
252 NDINIT(&ni, LOOKUP, ISOPEN | FOLLOW | LOCKLEAF | MPSAFE | AUDITVNODE1,
253 UIO_SYSSPACE, library, td);
254 error = namei(&ni);
255 LFREEPATH(library);
256 if (error)
257 goto cleanup;
258
259 vp = ni.ni_vp;
260 vfslocked = NDHASGIANT(&ni);
261 NDFREE(&ni, NDF_ONLY_PNBUF);
262
263 /*
264 * From here on down, we have a locked vnode that must be unlocked.
265 * XXX: The code below largely duplicates exec_check_permissions().
266 */
267 locked = 1;
268
269 /* Writable? */
270 if (vp->v_writecount) {
271 error = ETXTBSY;
272 goto cleanup;
273 }
274
275 /* Executable? */
276 error = VOP_GETATTR(vp, &attr, td->td_ucred);
277 if (error)
278 goto cleanup;
279
280 if ((vp->v_mount->mnt_flag & MNT_NOEXEC) ||
281 ((attr.va_mode & 0111) == 0) || (attr.va_type != VREG)) {
282 /* EACCESS is what exec(2) returns. */
283 error = ENOEXEC;
284 goto cleanup;
285 }
286
287 /* Sensible size? */
288 if (attr.va_size == 0) {
289 error = ENOEXEC;
290 goto cleanup;
291 }
292
293 /* Can we access it? */
294 error = VOP_ACCESS(vp, VEXEC, td->td_ucred, td);
295 if (error)
296 goto cleanup;
297
298 /*
299 * XXX: This should use vn_open() so that it is properly authorized,
300 * and to reduce code redundancy all over the place here.
301 * XXX: Not really, it duplicates far more of exec_check_permissions()
302 * than vn_open().
303 */
304#ifdef MAC
305 error = mac_vnode_check_open(td->td_ucred, vp, VREAD);
306 if (error)
307 goto cleanup;
308#endif
309 error = VOP_OPEN(vp, FREAD, td->td_ucred, td, NULL);
310 if (error)
311 goto cleanup;
312
313 /* Pull in executable header into kernel_map */
314 error = vm_mmap(kernel_map, (vm_offset_t *)&a_out, PAGE_SIZE,
315 VM_PROT_READ, VM_PROT_READ, 0, OBJT_VNODE, vp, 0);
316 if (error)
317 goto cleanup;
318
319 /* Is it a Linux binary ? */
320 if (((a_out->a_magic >> 16) & 0xff) != 0x64) {
321 error = ENOEXEC;
322 goto cleanup;
323 }
324
325 /*
326 * While we are here, we should REALLY do some more checks
327 */
328
329 /* Set file/virtual offset based on a.out variant. */
330 switch ((int)(a_out->a_magic & 0xffff)) {
331 case 0413: /* ZMAGIC */
332 file_offset = 1024;
333 break;
334 case 0314: /* QMAGIC */
335 file_offset = 0;
336 break;
337 default:
338 error = ENOEXEC;
339 goto cleanup;
340 }
341
342 bss_size = round_page(a_out->a_bss);
343
344 /* Check various fields in header for validity/bounds. */
345 if (a_out->a_text & PAGE_MASK || a_out->a_data & PAGE_MASK) {
346 error = ENOEXEC;
347 goto cleanup;
348 }
349
350 /* text + data can't exceed file size */
351 if (a_out->a_data + a_out->a_text > attr.va_size) {
352 error = EFAULT;
353 goto cleanup;
354 }
355
356 /*
357 * text/data/bss must not exceed limits
358 * XXX - this is not complete. it should check current usage PLUS
359 * the resources needed by this library.
360 */
361 PROC_LOCK(td->td_proc);
362 if (a_out->a_text > maxtsiz ||
363 a_out->a_data + bss_size > lim_cur(td->td_proc, RLIMIT_DATA)) {
364 PROC_UNLOCK(td->td_proc);
365 error = ENOMEM;
366 goto cleanup;
367 }
368 PROC_UNLOCK(td->td_proc);
369
370 /*
371 * Prevent more writers.
372 * XXX: Note that if any of the VM operations fail below we don't
373 * clear this flag.
374 */
375 vp->v_vflag |= VV_TEXT;
376
377 /*
378 * Lock no longer needed
379 */
380 locked = 0;
381 VOP_UNLOCK(vp, 0);
382 VFS_UNLOCK_GIANT(vfslocked);
383
384 /*
385 * Check if file_offset page aligned. Currently we cannot handle
386 * misalinged file offsets, and so we read in the entire image
387 * (what a waste).
388 */
389 if (file_offset & PAGE_MASK) {
390#ifdef DEBUG
391 printf("uselib: Non page aligned binary %lu\n", file_offset);
392#endif
393 /* Map text+data read/write/execute */
394
395 /* a_entry is the load address and is page aligned */
396 vmaddr = trunc_page(a_out->a_entry);
397
398 /* get anon user mapping, read+write+execute */
399 error = vm_map_find(&td->td_proc->p_vmspace->vm_map, NULL, 0,
400 &vmaddr, a_out->a_text + a_out->a_data, FALSE, VM_PROT_ALL,
401 VM_PROT_ALL, 0);
402 if (error)
403 goto cleanup;
404
405 /* map file into kernel_map */
406 error = vm_mmap(kernel_map, &buffer,
407 round_page(a_out->a_text + a_out->a_data + file_offset),
408 VM_PROT_READ, VM_PROT_READ, 0, OBJT_VNODE, vp,
409 trunc_page(file_offset));
410 if (error)
411 goto cleanup;
412
413 /* copy from kernel VM space to user space */
414 error = copyout(PTRIN(buffer + file_offset),
415 (void *)vmaddr, a_out->a_text + a_out->a_data);
416
417 /* release temporary kernel space */
418 vm_map_remove(kernel_map, buffer, buffer +
419 round_page(a_out->a_text + a_out->a_data + file_offset));
420
421 if (error)
422 goto cleanup;
423 } else {
424#ifdef DEBUG
425 printf("uselib: Page aligned binary %lu\n", file_offset);
426#endif
427 /*
428 * for QMAGIC, a_entry is 20 bytes beyond the load address
429 * to skip the executable header
430 */
431 vmaddr = trunc_page(a_out->a_entry);
432
433 /*
434 * Map it all into the process's space as a single
435 * copy-on-write "data" segment.
436 */
437 error = vm_mmap(&td->td_proc->p_vmspace->vm_map, &vmaddr,
438 a_out->a_text + a_out->a_data, VM_PROT_ALL, VM_PROT_ALL,
439 MAP_PRIVATE | MAP_FIXED, OBJT_VNODE, vp, file_offset);
440 if (error)
441 goto cleanup;
442 }
443#ifdef DEBUG
444 printf("mem=%08lx = %08lx %08lx\n", (long)vmaddr, ((long *)vmaddr)[0],
445 ((long *)vmaddr)[1]);
446#endif
447 if (bss_size != 0) {
448 /* Calculate BSS start address */
449 vmaddr = trunc_page(a_out->a_entry) + a_out->a_text +
450 a_out->a_data;
451
452 /* allocate some 'anon' space */
453 error = vm_map_find(&td->td_proc->p_vmspace->vm_map, NULL, 0,
454 &vmaddr, bss_size, FALSE, VM_PROT_ALL, VM_PROT_ALL, 0);
455 if (error)
456 goto cleanup;
457 }
458
459cleanup:
460 /* Unlock vnode if needed */
461 if (locked) {
462 VOP_UNLOCK(vp, 0);
463 VFS_UNLOCK_GIANT(vfslocked);
464 }
465
466 /* Release the kernel mapping. */
467 if (a_out)
468 vm_map_remove(kernel_map, (vm_offset_t)a_out,
469 (vm_offset_t)a_out + PAGE_SIZE);
470
471 return error;
472}
473
474#endif /* __i386__ */
475
476int
477linux_select(struct thread *td, struct linux_select_args *args)
478{
479 l_timeval ltv;
480 struct timeval tv0, tv1, utv, *tvp;
481 int error;
482
483#ifdef DEBUG
484 if (ldebug(select))
485 printf(ARGS(select, "%d, %p, %p, %p, %p"), args->nfds,
486 (void *)args->readfds, (void *)args->writefds,
487 (void *)args->exceptfds, (void *)args->timeout);
488#endif
489
490 /*
491 * Store current time for computation of the amount of
492 * time left.
493 */
494 if (args->timeout) {
495 if ((error = copyin(args->timeout, <v, sizeof(ltv))))
496 goto select_out;
497 utv.tv_sec = ltv.tv_sec;
498 utv.tv_usec = ltv.tv_usec;
499#ifdef DEBUG
500 if (ldebug(select))
501 printf(LMSG("incoming timeout (%jd/%ld)"),
502 (intmax_t)utv.tv_sec, utv.tv_usec);
503#endif
504
505 if (itimerfix(&utv)) {
506 /*
507 * The timeval was invalid. Convert it to something
508 * valid that will act as it does under Linux.
509 */
510 utv.tv_sec += utv.tv_usec / 1000000;
511 utv.tv_usec %= 1000000;
512 if (utv.tv_usec < 0) {
513 utv.tv_sec -= 1;
514 utv.tv_usec += 1000000;
515 }
516 if (utv.tv_sec < 0)
517 timevalclear(&utv);
518 }
519 microtime(&tv0);
520 tvp = &utv;
521 } else
522 tvp = NULL;
523
524 error = kern_select(td, args->nfds, args->readfds, args->writefds,
525 args->exceptfds, tvp, sizeof(l_int) * 8);
526
527#ifdef DEBUG
528 if (ldebug(select))
529 printf(LMSG("real select returns %d"), error);
530#endif
531 if (error)
532 goto select_out;
533
534 if (args->timeout) {
535 if (td->td_retval[0]) {
536 /*
537 * Compute how much time was left of the timeout,
538 * by subtracting the current time and the time
539 * before we started the call, and subtracting
540 * that result from the user-supplied value.
541 */
542 microtime(&tv1);
543 timevalsub(&tv1, &tv0);
544 timevalsub(&utv, &tv1);
545 if (utv.tv_sec < 0)
546 timevalclear(&utv);
547 } else
548 timevalclear(&utv);
549#ifdef DEBUG
550 if (ldebug(select))
551 printf(LMSG("outgoing timeout (%jd/%ld)"),
552 (intmax_t)utv.tv_sec, utv.tv_usec);
553#endif
554 ltv.tv_sec = utv.tv_sec;
555 ltv.tv_usec = utv.tv_usec;
556 if ((error = copyout(<v, args->timeout, sizeof(ltv))))
557 goto select_out;
558 }
559
560select_out:
561#ifdef DEBUG
562 if (ldebug(select))
563 printf(LMSG("select_out -> %d"), error);
564#endif
565 return error;
566}
567
568int
569linux_mremap(struct thread *td, struct linux_mremap_args *args)
570{
571 struct munmap_args /* {
572 void *addr;
573 size_t len;
574 } */ bsd_args;
575 int error = 0;
576
577#ifdef DEBUG
578 if (ldebug(mremap))
579 printf(ARGS(mremap, "%p, %08lx, %08lx, %08lx"),
580 (void *)(uintptr_t)args->addr,
581 (unsigned long)args->old_len,
582 (unsigned long)args->new_len,
583 (unsigned long)args->flags);
584#endif
585
586 if (args->flags & ~(LINUX_MREMAP_FIXED | LINUX_MREMAP_MAYMOVE)) {
587 td->td_retval[0] = 0;
588 return (EINVAL);
589 }
590
591 /*
592 * Check for the page alignment.
593 * Linux defines PAGE_MASK to be FreeBSD ~PAGE_MASK.
594 */
595 if (args->addr & PAGE_MASK) {
596 td->td_retval[0] = 0;
597 return (EINVAL);
598 }
599
600 args->new_len = round_page(args->new_len);
601 args->old_len = round_page(args->old_len);
602
603 if (args->new_len > args->old_len) {
604 td->td_retval[0] = 0;
605 return ENOMEM;
606 }
607
608 if (args->new_len < args->old_len) {
609 bsd_args.addr =
610 (caddr_t)((uintptr_t)args->addr + args->new_len);
611 bsd_args.len = args->old_len - args->new_len;
612 error = munmap(td, &bsd_args);
613 }
614
615 td->td_retval[0] = error ? 0 : (uintptr_t)args->addr;
616 return error;
617}
618
619#define LINUX_MS_ASYNC 0x0001
620#define LINUX_MS_INVALIDATE 0x0002
621#define LINUX_MS_SYNC 0x0004
622
623int
624linux_msync(struct thread *td, struct linux_msync_args *args)
625{
626 struct msync_args bsd_args;
627
628 bsd_args.addr = (caddr_t)(uintptr_t)args->addr;
629 bsd_args.len = (uintptr_t)args->len;
630 bsd_args.flags = args->fl & ~LINUX_MS_SYNC;
631
632 return msync(td, &bsd_args);
633}
634
635int
636linux_time(struct thread *td, struct linux_time_args *args)
637{
638 struct timeval tv;
639 l_time_t tm;
640 int error;
641
642#ifdef DEBUG
643 if (ldebug(time))
644 printf(ARGS(time, "*"));
645#endif
646
647 microtime(&tv);
648 tm = tv.tv_sec;
649 if (args->tm && (error = copyout(&tm, args->tm, sizeof(tm))))
650 return error;
651 td->td_retval[0] = tm;
652 return 0;
653}
654
655struct l_times_argv {
656 l_clock_t tms_utime;
657 l_clock_t tms_stime;
658 l_clock_t tms_cutime;
659 l_clock_t tms_cstime;
660};
661
662
663/*
664 * Glibc versions prior to 2.2.1 always use hard-coded CLK_TCK value.
665 * Since 2.2.1 Glibc uses value exported from kernel via AT_CLKTCK
666 * auxiliary vector entry.
667 */
668#define CLK_TCK 100
669
670#define CONVOTCK(r) (r.tv_sec * CLK_TCK + r.tv_usec / (1000000 / CLK_TCK))
671#define CONVNTCK(r) (r.tv_sec * stclohz + r.tv_usec / (1000000 / stclohz))
672
673#define CONVTCK(r) (linux_kernver(td) >= LINUX_KERNVER_2004000 ? \
674 CONVNTCK(r) : CONVOTCK(r))
675
676int
677linux_times(struct thread *td, struct linux_times_args *args)
678{
679 struct timeval tv, utime, stime, cutime, cstime;
680 struct l_times_argv tms;
681 struct proc *p;
682 int error;
683
684#ifdef DEBUG
685 if (ldebug(times))
686 printf(ARGS(times, "*"));
687#endif
688
689 if (args->buf != NULL) {
690 p = td->td_proc;
691 PROC_LOCK(p);
692 PROC_SLOCK(p);
693 calcru(p, &utime, &stime);
694 PROC_SUNLOCK(p);
695 calccru(p, &cutime, &cstime);
696 PROC_UNLOCK(p);
697
698 tms.tms_utime = CONVTCK(utime);
699 tms.tms_stime = CONVTCK(stime);
700
701 tms.tms_cutime = CONVTCK(cutime);
702 tms.tms_cstime = CONVTCK(cstime);
703
704 if ((error = copyout(&tms, args->buf, sizeof(tms))))
705 return error;
706 }
707
708 microuptime(&tv);
709 td->td_retval[0] = (int)CONVTCK(tv);
710 return 0;
711}
712
713int
714linux_newuname(struct thread *td, struct linux_newuname_args *args)
715{
716 struct l_new_utsname utsname;
717 char osname[LINUX_MAX_UTSNAME];
718 char osrelease[LINUX_MAX_UTSNAME];
719 char *p;
720
721#ifdef DEBUG
722 if (ldebug(newuname))
723 printf(ARGS(newuname, "*"));
724#endif
725
726 linux_get_osname(td, osname);
727 linux_get_osrelease(td, osrelease);
728
729 bzero(&utsname, sizeof(utsname));
730 strlcpy(utsname.sysname, osname, LINUX_MAX_UTSNAME);
731 getcredhostname(td->td_ucred, utsname.nodename, LINUX_MAX_UTSNAME);
732 getcreddomainname(td->td_ucred, utsname.domainname, LINUX_MAX_UTSNAME);
733 strlcpy(utsname.release, osrelease, LINUX_MAX_UTSNAME);
734 strlcpy(utsname.version, version, LINUX_MAX_UTSNAME);
735 for (p = utsname.version; *p != '\0'; ++p)
736 if (*p == '\n') {
737 *p = '\0';
738 break;
739 }
740 strlcpy(utsname.machine, linux_platform, LINUX_MAX_UTSNAME);
741
742 return (copyout(&utsname, args->buf, sizeof(utsname)));
743}
744
745#if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
746struct l_utimbuf {
747 l_time_t l_actime;
748 l_time_t l_modtime;
749};
750
751int
752linux_utime(struct thread *td, struct linux_utime_args *args)
753{
754 struct timeval tv[2], *tvp;
755 struct l_utimbuf lut;
756 char *fname;
757 int error;
758
759 LCONVPATHEXIST(td, args->fname, &fname);
760
761#ifdef DEBUG
762 if (ldebug(utime))
763 printf(ARGS(utime, "%s, *"), fname);
764#endif
765
766 if (args->times) {
767 if ((error = copyin(args->times, &lut, sizeof lut))) {
768 LFREEPATH(fname);
769 return error;
770 }
771 tv[0].tv_sec = lut.l_actime;
772 tv[0].tv_usec = 0;
773 tv[1].tv_sec = lut.l_modtime;
774 tv[1].tv_usec = 0;
775 tvp = tv;
776 } else
777 tvp = NULL;
778
779 error = kern_utimes(td, fname, UIO_SYSSPACE, tvp, UIO_SYSSPACE);
780 LFREEPATH(fname);
781 return (error);
782}
783
784int
785linux_utimes(struct thread *td, struct linux_utimes_args *args)
786{
787 l_timeval ltv[2];
788 struct timeval tv[2], *tvp = NULL;
789 char *fname;
790 int error;
791
792 LCONVPATHEXIST(td, args->fname, &fname);
793
794#ifdef DEBUG
795 if (ldebug(utimes))
796 printf(ARGS(utimes, "%s, *"), fname);
797#endif
798
799 if (args->tptr != NULL) {
800 if ((error = copyin(args->tptr, ltv, sizeof ltv))) {
801 LFREEPATH(fname);
802 return (error);
803 }
804 tv[0].tv_sec = ltv[0].tv_sec;
805 tv[0].tv_usec = ltv[0].tv_usec;
806 tv[1].tv_sec = ltv[1].tv_sec;
807 tv[1].tv_usec = ltv[1].tv_usec;
808 tvp = tv;
809 }
810
811 error = kern_utimes(td, fname, UIO_SYSSPACE, tvp, UIO_SYSSPACE);
812 LFREEPATH(fname);
813 return (error);
814}
815
816int
817linux_futimesat(struct thread *td, struct linux_futimesat_args *args)
818{
819 l_timeval ltv[2];
820 struct timeval tv[2], *tvp = NULL;
821 char *fname;
822 int error, dfd;
823
824 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
825 LCONVPATHEXIST_AT(td, args->filename, &fname, dfd);
826
827#ifdef DEBUG
828 if (ldebug(futimesat))
829 printf(ARGS(futimesat, "%s, *"), fname);
830#endif
831
832 if (args->utimes != NULL) {
833 if ((error = copyin(args->utimes, ltv, sizeof ltv))) {
834 LFREEPATH(fname);
835 return (error);
836 }
837 tv[0].tv_sec = ltv[0].tv_sec;
838 tv[0].tv_usec = ltv[0].tv_usec;
839 tv[1].tv_sec = ltv[1].tv_sec;
840 tv[1].tv_usec = ltv[1].tv_usec;
841 tvp = tv;
842 }
843
844 error = kern_utimesat(td, dfd, fname, UIO_SYSSPACE, tvp, UIO_SYSSPACE);
845 LFREEPATH(fname);
846 return (error);
847}
848#endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
849
850#define __WCLONE 0x80000000
851
852int
853linux_waitpid(struct thread *td, struct linux_waitpid_args *args)
854{
855 int error, options, tmpstat;
856
857#ifdef DEBUG
858 if (ldebug(waitpid))
859 printf(ARGS(waitpid, "%d, %p, %d"),
860 args->pid, (void *)args->status, args->options);
861#endif
862 /*
863 * this is necessary because the test in kern_wait doesn't work
864 * because we mess with the options here
865 */
866 if (args->options & ~(WUNTRACED | WNOHANG | WCONTINUED | __WCLONE))
867 return (EINVAL);
868
869 options = (args->options & (WNOHANG | WUNTRACED));
870 /* WLINUXCLONE should be equal to __WCLONE, but we make sure */
871 if (args->options & __WCLONE)
872 options |= WLINUXCLONE;
873
874 error = kern_wait(td, args->pid, &tmpstat, options, NULL);
875 if (error)
876 return error;
877
878 if (args->status) {
879 tmpstat &= 0xffff;
880 if (WIFSIGNALED(tmpstat))
881 tmpstat = (tmpstat & 0xffffff80) |
882 BSD_TO_LINUX_SIGNAL(WTERMSIG(tmpstat));
883 else if (WIFSTOPPED(tmpstat))
884 tmpstat = (tmpstat & 0xffff00ff) |
885 (BSD_TO_LINUX_SIGNAL(WSTOPSIG(tmpstat)) << 8);
886 return copyout(&tmpstat, args->status, sizeof(int));
887 }
888
889 return 0;
890}
891
892int
893linux_wait4(struct thread *td, struct linux_wait4_args *args)
894{
895 int error, options, tmpstat;
896 struct rusage ru, *rup;
897 struct proc *p;
898
899#ifdef DEBUG
900 if (ldebug(wait4))
901 printf(ARGS(wait4, "%d, %p, %d, %p"),
902 args->pid, (void *)args->status, args->options,
903 (void *)args->rusage);
904#endif
905
906 options = (args->options & (WNOHANG | WUNTRACED));
907 /* WLINUXCLONE should be equal to __WCLONE, but we make sure */
908 if (args->options & __WCLONE)
909 options |= WLINUXCLONE;
910
911 if (args->rusage != NULL)
912 rup = &ru;
913 else
914 rup = NULL;
915 error = kern_wait(td, args->pid, &tmpstat, options, rup);
916 if (error)
917 return error;
918
919 p = td->td_proc;
920 PROC_LOCK(p);
921 sigqueue_delete(&p->p_sigqueue, SIGCHLD);
922 PROC_UNLOCK(p);
923
924 if (args->status) {
925 tmpstat &= 0xffff;
926 if (WIFSIGNALED(tmpstat))
927 tmpstat = (tmpstat & 0xffffff80) |
928 BSD_TO_LINUX_SIGNAL(WTERMSIG(tmpstat));
929 else if (WIFSTOPPED(tmpstat))
930 tmpstat = (tmpstat & 0xffff00ff) |
931 (BSD_TO_LINUX_SIGNAL(WSTOPSIG(tmpstat)) << 8);
932 error = copyout(&tmpstat, args->status, sizeof(int));
933 }
934 if (args->rusage != NULL && error == 0)
935 error = copyout(&ru, args->rusage, sizeof(ru));
936
937 return (error);
938}
939
940int
941linux_mknod(struct thread *td, struct linux_mknod_args *args)
942{
943 char *path;
944 int error;
945
946 LCONVPATHCREAT(td, args->path, &path);
947
948#ifdef DEBUG
949 if (ldebug(mknod))
950 printf(ARGS(mknod, "%s, %d, %d"), path, args->mode, args->dev);
951#endif
952
953 switch (args->mode & S_IFMT) {
954 case S_IFIFO:
955 case S_IFSOCK:
956 error = kern_mkfifo(td, path, UIO_SYSSPACE, args->mode);
957 break;
958
959 case S_IFCHR:
960 case S_IFBLK:
961 error = kern_mknod(td, path, UIO_SYSSPACE, args->mode,
962 args->dev);
963 break;
964
965 case S_IFDIR:
966 error = EPERM;
967 break;
968
969 case 0:
970 args->mode |= S_IFREG;
971 /* FALLTHROUGH */
972 case S_IFREG:
973 error = kern_open(td, path, UIO_SYSSPACE,
974 O_WRONLY | O_CREAT | O_TRUNC, args->mode);
975 if (error == 0)
976 kern_close(td, td->td_retval[0]);
977 break;
978
979 default:
980 error = EINVAL;
981 break;
982 }
983 LFREEPATH(path);
984 return (error);
985}
986
987int
988linux_mknodat(struct thread *td, struct linux_mknodat_args *args)
989{
990 char *path;
991 int error, dfd;
992
993 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
994 LCONVPATHCREAT_AT(td, args->filename, &path, dfd);
995
996#ifdef DEBUG
997 if (ldebug(mknodat))
998 printf(ARGS(mknodat, "%s, %d, %d"), path, args->mode, args->dev);
999#endif
1000
1001 switch (args->mode & S_IFMT) {
1002 case S_IFIFO:
1003 case S_IFSOCK:
1004 error = kern_mkfifoat(td, dfd, path, UIO_SYSSPACE, args->mode);
1005 break;
1006
1007 case S_IFCHR:
1008 case S_IFBLK:
1009 error = kern_mknodat(td, dfd, path, UIO_SYSSPACE, args->mode,
1010 args->dev);
1011 break;
1012
1013 case S_IFDIR:
1014 error = EPERM;
1015 break;
1016
1017 case 0:
1018 args->mode |= S_IFREG;
1019 /* FALLTHROUGH */
1020 case S_IFREG:
1021 error = kern_openat(td, dfd, path, UIO_SYSSPACE,
1022 O_WRONLY | O_CREAT | O_TRUNC, args->mode);
1023 if (error == 0)
1024 kern_close(td, td->td_retval[0]);
1025 break;
1026
1027 default:
1028 error = EINVAL;
1029 break;
1030 }
1031 LFREEPATH(path);
1032 return (error);
1033}
1034
1035/*
1036 * UGH! This is just about the dumbest idea I've ever heard!!
1037 */
1038int
1039linux_personality(struct thread *td, struct linux_personality_args *args)
1040{
1041#ifdef DEBUG
1042 if (ldebug(personality))
1043 printf(ARGS(personality, "%lu"), (unsigned long)args->per);
1044#endif
1045 if (args->per != 0)
1046 return EINVAL;
1047
1048 /* Yes Jim, it's still a Linux... */
1049 td->td_retval[0] = 0;
1050 return 0;
1051}
1052
1053struct l_itimerval {
1054 l_timeval it_interval;
1055 l_timeval it_value;
1056};
1057
1058#define B2L_ITIMERVAL(bip, lip) \
1059 (bip)->it_interval.tv_sec = (lip)->it_interval.tv_sec; \
1060 (bip)->it_interval.tv_usec = (lip)->it_interval.tv_usec; \
1061 (bip)->it_value.tv_sec = (lip)->it_value.tv_sec; \
1062 (bip)->it_value.tv_usec = (lip)->it_value.tv_usec;
1063
1064int
1065linux_setitimer(struct thread *td, struct linux_setitimer_args *uap)
1066{
1067 int error;
1068 struct l_itimerval ls;
1069 struct itimerval aitv, oitv;
1070
1071#ifdef DEBUG
1072 if (ldebug(setitimer))
1073 printf(ARGS(setitimer, "%p, %p"),
1074 (void *)uap->itv, (void *)uap->oitv);
1075#endif
1076
1077 if (uap->itv == NULL) {
1078 uap->itv = uap->oitv;
1079 return (linux_getitimer(td, (struct linux_getitimer_args *)uap));
1080 }
1081
1082 error = copyin(uap->itv, &ls, sizeof(ls));
1083 if (error != 0)
1084 return (error);
1085 B2L_ITIMERVAL(&aitv, &ls);
1086#ifdef DEBUG
1087 if (ldebug(setitimer)) {
1088 printf("setitimer: value: sec: %jd, usec: %ld\n",
1089 (intmax_t)aitv.it_value.tv_sec, aitv.it_value.tv_usec);
1090 printf("setitimer: interval: sec: %jd, usec: %ld\n",
1091 (intmax_t)aitv.it_interval.tv_sec, aitv.it_interval.tv_usec);
1092 }
1093#endif
1094 error = kern_setitimer(td, uap->which, &aitv, &oitv);
1095 if (error != 0 || uap->oitv == NULL)
1096 return (error);
1097 B2L_ITIMERVAL(&ls, &oitv);
1098
1099 return (copyout(&ls, uap->oitv, sizeof(ls)));
1100}
1101
1102int
1103linux_getitimer(struct thread *td, struct linux_getitimer_args *uap)
1104{
1105 int error;
1106 struct l_itimerval ls;
1107 struct itimerval aitv;
1108
1109#ifdef DEBUG
1110 if (ldebug(getitimer))
1111 printf(ARGS(getitimer, "%p"), (void *)uap->itv);
1112#endif
1113 error = kern_getitimer(td, uap->which, &aitv);
1114 if (error != 0)
1115 return (error);
1116 B2L_ITIMERVAL(&ls, &aitv);
1117 return (copyout(&ls, uap->itv, sizeof(ls)));
1118}
1119
1120int
1121linux_nice(struct thread *td, struct linux_nice_args *args)
1122{
1123 struct setpriority_args bsd_args;
1124
1125 bsd_args.which = PRIO_PROCESS;
1126 bsd_args.who = 0; /* current process */
1127 bsd_args.prio = args->inc;
1128 return setpriority(td, &bsd_args);
1129}
1130
1131int
1132linux_setgroups(struct thread *td, struct linux_setgroups_args *args)
1133{
1134 struct ucred *newcred, *oldcred;
1135 l_gid_t *linux_gidset;
1136 gid_t *bsd_gidset;
1137 int ngrp, error;
1138 struct proc *p;
1139
1140 ngrp = args->gidsetsize;
1141 if (ngrp < 0 || ngrp >= ngroups_max + 1)
1142 return (EINVAL);
1143 linux_gidset = malloc(ngrp * sizeof(*linux_gidset), M_TEMP, M_WAITOK);
1144 error = copyin(args->grouplist, linux_gidset, ngrp * sizeof(l_gid_t));
1145 if (error)
1146 goto out;
1147 newcred = crget();
1148 p = td->td_proc;
1149 PROC_LOCK(p);
1150 oldcred = crcopysafe(p, newcred);
1151
1152 /*
1153 * cr_groups[0] holds egid. Setting the whole set from
1154 * the supplied set will cause egid to be changed too.
1155 * Keep cr_groups[0] unchanged to prevent that.
1156 */
1157
1158 if ((error = priv_check_cred(oldcred, PRIV_CRED_SETGROUPS, 0)) != 0) {
1159 PROC_UNLOCK(p);
1160 crfree(newcred);
1161 goto out;
1162 }
1163
1164 if (ngrp > 0) {
1165 newcred->cr_ngroups = ngrp + 1;
1166
1167 bsd_gidset = newcred->cr_groups;
1168 ngrp--;
1169 while (ngrp >= 0) {
1170 bsd_gidset[ngrp + 1] = linux_gidset[ngrp];
1171 ngrp--;
1172 }
1173 } else
1174 newcred->cr_ngroups = 1;
1175
1176 setsugid(p);
1177 p->p_ucred = newcred;
1178 PROC_UNLOCK(p);
1179 crfree(oldcred);
1180 error = 0;
1181out:
1182 free(linux_gidset, M_TEMP);
1183 return (error);
1184}
1185
1186int
1187linux_getgroups(struct thread *td, struct linux_getgroups_args *args)
1188{
1189 struct ucred *cred;
1190 l_gid_t *linux_gidset;
1191 gid_t *bsd_gidset;
1192 int bsd_gidsetsz, ngrp, error;
1193
1194 cred = td->td_ucred;
1195 bsd_gidset = cred->cr_groups;
1196 bsd_gidsetsz = cred->cr_ngroups - 1;
1197
1198 /*
1199 * cr_groups[0] holds egid. Returning the whole set
1200 * here will cause a duplicate. Exclude cr_groups[0]
1201 * to prevent that.
1202 */
1203
1204 if ((ngrp = args->gidsetsize) == 0) {
1205 td->td_retval[0] = bsd_gidsetsz;
1206 return (0);
1207 }
1208
1209 if (ngrp < bsd_gidsetsz)
1210 return (EINVAL);
1211
1212 ngrp = 0;
1213 linux_gidset = malloc(bsd_gidsetsz * sizeof(*linux_gidset),
1214 M_TEMP, M_WAITOK);
1215 while (ngrp < bsd_gidsetsz) {
1216 linux_gidset[ngrp] = bsd_gidset[ngrp + 1];
1217 ngrp++;
1218 }
1219
1220 error = copyout(linux_gidset, args->grouplist, ngrp * sizeof(l_gid_t));
1221 free(linux_gidset, M_TEMP);
1222 if (error)
1223 return (error);
1224
1225 td->td_retval[0] = ngrp;
1226 return (0);
1227}
1228
1229int
1230linux_setrlimit(struct thread *td, struct linux_setrlimit_args *args)
1231{
1232 struct rlimit bsd_rlim;
1233 struct l_rlimit rlim;
1234 u_int which;
1235 int error;
1236
1237#ifdef DEBUG
1238 if (ldebug(setrlimit))
1239 printf(ARGS(setrlimit, "%d, %p"),
1240 args->resource, (void *)args->rlim);
1241#endif
1242
1243 if (args->resource >= LINUX_RLIM_NLIMITS)
1244 return (EINVAL);
1245
1246 which = linux_to_bsd_resource[args->resource];
1247 if (which == -1)
1248 return (EINVAL);
1249
1250 error = copyin(args->rlim, &rlim, sizeof(rlim));
1251 if (error)
1252 return (error);
1253
1254 bsd_rlim.rlim_cur = (rlim_t)rlim.rlim_cur;
1255 bsd_rlim.rlim_max = (rlim_t)rlim.rlim_max;
1256 return (kern_setrlimit(td, which, &bsd_rlim));
1257}
1258
1259int
1260linux_old_getrlimit(struct thread *td, struct linux_old_getrlimit_args *args)
1261{
1262 struct l_rlimit rlim;
1263 struct proc *p = td->td_proc;
1264 struct rlimit bsd_rlim;
1265 u_int which;
1266
1267#ifdef DEBUG
1268 if (ldebug(old_getrlimit))
1269 printf(ARGS(old_getrlimit, "%d, %p"),
1270 args->resource, (void *)args->rlim);
1271#endif
1272
1273 if (args->resource >= LINUX_RLIM_NLIMITS)
1274 return (EINVAL);
1275
1276 which = linux_to_bsd_resource[args->resource];
1277 if (which == -1)
1278 return (EINVAL);
1279
1280 PROC_LOCK(p);
1281 lim_rlimit(p, which, &bsd_rlim);
1282 PROC_UNLOCK(p);
1283
1284#ifdef COMPAT_LINUX32
1285 rlim.rlim_cur = (unsigned int)bsd_rlim.rlim_cur;
1286 if (rlim.rlim_cur == UINT_MAX)
1287 rlim.rlim_cur = INT_MAX;
1288 rlim.rlim_max = (unsigned int)bsd_rlim.rlim_max;
1289 if (rlim.rlim_max == UINT_MAX)
1290 rlim.rlim_max = INT_MAX;
1291#else
1292 rlim.rlim_cur = (unsigned long)bsd_rlim.rlim_cur;
1293 if (rlim.rlim_cur == ULONG_MAX)
1294 rlim.rlim_cur = LONG_MAX;
1295 rlim.rlim_max = (unsigned long)bsd_rlim.rlim_max;
1296 if (rlim.rlim_max == ULONG_MAX)
1297 rlim.rlim_max = LONG_MAX;
1298#endif
1299 return (copyout(&rlim, args->rlim, sizeof(rlim)));
1300}
1301
1302int
1303linux_getrlimit(struct thread *td, struct linux_getrlimit_args *args)
1304{
1305 struct l_rlimit rlim;
1306 struct proc *p = td->td_proc;
1307 struct rlimit bsd_rlim;
1308 u_int which;
1309
1310#ifdef DEBUG
1311 if (ldebug(getrlimit))
1312 printf(ARGS(getrlimit, "%d, %p"),
1313 args->resource, (void *)args->rlim);
1314#endif
1315
1316 if (args->resource >= LINUX_RLIM_NLIMITS)
1317 return (EINVAL);
1318
1319 which = linux_to_bsd_resource[args->resource];
1320 if (which == -1)
1321 return (EINVAL);
1322
1323 PROC_LOCK(p);
1324 lim_rlimit(p, which, &bsd_rlim);
1325 PROC_UNLOCK(p);
1326
1327 rlim.rlim_cur = (l_ulong)bsd_rlim.rlim_cur;
1328 rlim.rlim_max = (l_ulong)bsd_rlim.rlim_max;
1329 return (copyout(&rlim, args->rlim, sizeof(rlim)));
1330}
1331
1332int
1333linux_sched_setscheduler(struct thread *td,
1334 struct linux_sched_setscheduler_args *args)
1335{
1336 struct sched_setscheduler_args bsd;
1337
1338#ifdef DEBUG
1339 if (ldebug(sched_setscheduler))
1340 printf(ARGS(sched_setscheduler, "%d, %d, %p"),
1341 args->pid, args->policy, (const void *)args->param);
1342#endif
1343
1344 switch (args->policy) {
1345 case LINUX_SCHED_OTHER:
1346 bsd.policy = SCHED_OTHER;
1347 break;
1348 case LINUX_SCHED_FIFO:
1349 bsd.policy = SCHED_FIFO;
1350 break;
1351 case LINUX_SCHED_RR:
1352 bsd.policy = SCHED_RR;
1353 break;
1354 default:
1355 return EINVAL;
1356 }
1357
1358 bsd.pid = args->pid;
1359 bsd.param = (struct sched_param *)args->param;
1360 return sched_setscheduler(td, &bsd);
1361}
1362
1363int
1364linux_sched_getscheduler(struct thread *td,
1365 struct linux_sched_getscheduler_args *args)
1366{
1367 struct sched_getscheduler_args bsd;
1368 int error;
1369
1370#ifdef DEBUG
1371 if (ldebug(sched_getscheduler))
1372 printf(ARGS(sched_getscheduler, "%d"), args->pid);
1373#endif
1374
1375 bsd.pid = args->pid;
1376 error = sched_getscheduler(td, &bsd);
1377
1378 switch (td->td_retval[0]) {
1379 case SCHED_OTHER:
1380 td->td_retval[0] = LINUX_SCHED_OTHER;
1381 break;
1382 case SCHED_FIFO:
1383 td->td_retval[0] = LINUX_SCHED_FIFO;
1384 break;
1385 case SCHED_RR:
1386 td->td_retval[0] = LINUX_SCHED_RR;
1387 break;
1388 }
1389
1390 return error;
1391}
1392
1393int
1394linux_sched_get_priority_max(struct thread *td,
1395 struct linux_sched_get_priority_max_args *args)
1396{
1397 struct sched_get_priority_max_args bsd;
1398
1399#ifdef DEBUG
1400 if (ldebug(sched_get_priority_max))
1401 printf(ARGS(sched_get_priority_max, "%d"), args->policy);
1402#endif
1403
1404 switch (args->policy) {
1405 case LINUX_SCHED_OTHER:
1406 bsd.policy = SCHED_OTHER;
1407 break;
1408 case LINUX_SCHED_FIFO:
1409 bsd.policy = SCHED_FIFO;
1410 break;
1411 case LINUX_SCHED_RR:
1412 bsd.policy = SCHED_RR;
1413 break;
1414 default:
1415 return EINVAL;
1416 }
1417 return sched_get_priority_max(td, &bsd);
1418}
1419
1420int
1421linux_sched_get_priority_min(struct thread *td,
1422 struct linux_sched_get_priority_min_args *args)
1423{
1424 struct sched_get_priority_min_args bsd;
1425
1426#ifdef DEBUG
1427 if (ldebug(sched_get_priority_min))
1428 printf(ARGS(sched_get_priority_min, "%d"), args->policy);
1429#endif
1430
1431 switch (args->policy) {
1432 case LINUX_SCHED_OTHER:
1433 bsd.policy = SCHED_OTHER;
1434 break;
1435 case LINUX_SCHED_FIFO:
1436 bsd.policy = SCHED_FIFO;
1437 break;
1438 case LINUX_SCHED_RR:
1439 bsd.policy = SCHED_RR;
1440 break;
1441 default:
1442 return EINVAL;
1443 }
1444 return sched_get_priority_min(td, &bsd);
1445}
1446
1447#define REBOOT_CAD_ON 0x89abcdef
1448#define REBOOT_CAD_OFF 0
1449#define REBOOT_HALT 0xcdef0123
1450#define REBOOT_RESTART 0x01234567
1451#define REBOOT_RESTART2 0xA1B2C3D4
1452#define REBOOT_POWEROFF 0x4321FEDC
1453#define REBOOT_MAGIC1 0xfee1dead
1454#define REBOOT_MAGIC2 0x28121969
1455#define REBOOT_MAGIC2A 0x05121996
1456#define REBOOT_MAGIC2B 0x16041998
1457
1458int
1459linux_reboot(struct thread *td, struct linux_reboot_args *args)
1460{
1461 struct reboot_args bsd_args;
1462
1463#ifdef DEBUG
1464 if (ldebug(reboot))
1465 printf(ARGS(reboot, "0x%x"), args->cmd);
1466#endif
1467
1468 if (args->magic1 != REBOOT_MAGIC1)
1469 return EINVAL;
1470
1471 switch (args->magic2) {
1472 case REBOOT_MAGIC2:
1473 case REBOOT_MAGIC2A:
1474 case REBOOT_MAGIC2B:
1475 break;
1476 default:
1477 return EINVAL;
1478 }
1479
1480 switch (args->cmd) {
1481 case REBOOT_CAD_ON:
1482 case REBOOT_CAD_OFF:
1483 return (priv_check(td, PRIV_REBOOT));
1484 case REBOOT_HALT:
1485 bsd_args.opt = RB_HALT;
1486 break;
1487 case REBOOT_RESTART:
1488 case REBOOT_RESTART2:
1489 bsd_args.opt = 0;
1490 break;
1491 case REBOOT_POWEROFF:
1492 bsd_args.opt = RB_POWEROFF;
1493 break;
1494 default:
1495 return EINVAL;
1496 }
1497 return reboot(td, &bsd_args);
1498}
1499
1500
1501/*
1502 * The FreeBSD native getpid(2), getgid(2) and getuid(2) also modify
1503 * td->td_retval[1] when COMPAT_43 is defined. This clobbers registers that
1504 * are assumed to be preserved. The following lightweight syscalls fixes
1505 * this. See also linux_getgid16() and linux_getuid16() in linux_uid16.c
1506 *
1507 * linux_getpid() - MP SAFE
1508 * linux_getgid() - MP SAFE
1509 * linux_getuid() - MP SAFE
1510 */
1511
1512int
1513linux_getpid(struct thread *td, struct linux_getpid_args *args)
1514{
1515 struct linux_emuldata *em;
1516
1517#ifdef DEBUG
1518 if (ldebug(getpid))
1519 printf(ARGS(getpid, ""));
1520#endif
1521
1522 if (linux_use26(td)) {
1523 em = em_find(td->td_proc, EMUL_DONTLOCK);
1524 KASSERT(em != NULL, ("getpid: emuldata not found.\n"));
1525 td->td_retval[0] = em->shared->group_pid;
1526 } else {
1527 td->td_retval[0] = td->td_proc->p_pid;
1528 }
1529
1530 return (0);
1531}
1532
1533int
1534linux_gettid(struct thread *td, struct linux_gettid_args *args)
1535{
1536
1537#ifdef DEBUG
1538 if (ldebug(gettid))
1539 printf(ARGS(gettid, ""));
1540#endif
1541
1542 td->td_retval[0] = td->td_proc->p_pid;
1543 return (0);
1544}
1545
1546
1547int
1548linux_getppid(struct thread *td, struct linux_getppid_args *args)
1549{
1550 struct linux_emuldata *em;
1551 struct proc *p, *pp;
1552
1553#ifdef DEBUG
1554 if (ldebug(getppid))
1555 printf(ARGS(getppid, ""));
1556#endif
1557
1558 if (!linux_use26(td)) {
1559 PROC_LOCK(td->td_proc);
1560 td->td_retval[0] = td->td_proc->p_pptr->p_pid;
1561 PROC_UNLOCK(td->td_proc);
1562 return (0);
1563 }
1564
1565 em = em_find(td->td_proc, EMUL_DONTLOCK);
1566
1567 KASSERT(em != NULL, ("getppid: process emuldata not found.\n"));
1568
1569 /* find the group leader */
1570 p = pfind(em->shared->group_pid);
1571
1572 if (p == NULL) {
1573#ifdef DEBUG
1574 printf(LMSG("parent process not found.\n"));
1575#endif
1576 return (0);
1577 }
1578
1579 pp = p->p_pptr; /* switch to parent */
1580 PROC_LOCK(pp);
1581 PROC_UNLOCK(p);
1582
1583 /* if its also linux process */
1584 if (pp->p_sysent == &elf_linux_sysvec) {
1585 em = em_find(pp, EMUL_DONTLOCK);
1586 KASSERT(em != NULL, ("getppid: parent emuldata not found.\n"));
1587
1588 td->td_retval[0] = em->shared->group_pid;
1589 } else
1590 td->td_retval[0] = pp->p_pid;
1591
1592 PROC_UNLOCK(pp);
1593
1594 return (0);
1595}
1596
1597int
1598linux_getgid(struct thread *td, struct linux_getgid_args *args)
1599{
1600
1601#ifdef DEBUG
1602 if (ldebug(getgid))
1603 printf(ARGS(getgid, ""));
1604#endif
1605
1606 td->td_retval[0] = td->td_ucred->cr_rgid;
1607 return (0);
1608}
1609
1610int
1611linux_getuid(struct thread *td, struct linux_getuid_args *args)
1612{
1613
1614#ifdef DEBUG
1615 if (ldebug(getuid))
1616 printf(ARGS(getuid, ""));
1617#endif
1618
1619 td->td_retval[0] = td->td_ucred->cr_ruid;
1620 return (0);
1621}
1622
1623
1624int
1625linux_getsid(struct thread *td, struct linux_getsid_args *args)
1626{
1627 struct getsid_args bsd;
1628
1629#ifdef DEBUG
1630 if (ldebug(getsid))
1631 printf(ARGS(getsid, "%i"), args->pid);
1632#endif
1633
1634 bsd.pid = args->pid;
1635 return getsid(td, &bsd);
1636}
1637
1638int
1639linux_nosys(struct thread *td, struct nosys_args *ignore)
1640{
1641
1642 return (ENOSYS);
1643}
1644
1645int
1646linux_getpriority(struct thread *td, struct linux_getpriority_args *args)
1647{
1648 struct getpriority_args bsd_args;
1649 int error;
1650
1651#ifdef DEBUG
1652 if (ldebug(getpriority))
1653 printf(ARGS(getpriority, "%i, %i"), args->which, args->who);
1654#endif
1655
1656 bsd_args.which = args->which;
1657 bsd_args.who = args->who;
1658 error = getpriority(td, &bsd_args);
1659 td->td_retval[0] = 20 - td->td_retval[0];
1660 return error;
1661}
1662
1663int
1664linux_sethostname(struct thread *td, struct linux_sethostname_args *args)
1665{
1666 int name[2];
1667
1668#ifdef DEBUG
1669 if (ldebug(sethostname))
1670 printf(ARGS(sethostname, "*, %i"), args->len);
1671#endif
1672
1673 name[0] = CTL_KERN;
1674 name[1] = KERN_HOSTNAME;
1675 return (userland_sysctl(td, name, 2, 0, 0, 0, args->hostname,
1676 args->len, 0, 0));
1677}
1678
1679int
1680linux_setdomainname(struct thread *td, struct linux_setdomainname_args *args)
1681{
1682 int name[2];
1683
1684#ifdef DEBUG
1685 if (ldebug(setdomainname))
1686 printf(ARGS(setdomainname, "*, %i"), args->len);
1687#endif
1688
1689 name[0] = CTL_KERN;
1690 name[1] = KERN_NISDOMAINNAME;
1691 return (userland_sysctl(td, name, 2, 0, 0, 0, args->name,
1692 args->len, 0, 0));
1693}
1694
1695int
1696linux_exit_group(struct thread *td, struct linux_exit_group_args *args)
1697{
| 32
33#include "opt_compat.h"
34
35#include <sys/param.h>
36#include <sys/blist.h>
37#include <sys/fcntl.h>
38#if defined(__i386__)
39#include <sys/imgact_aout.h>
40#endif
41#include <sys/jail.h>
42#include <sys/kernel.h>
43#include <sys/limits.h>
44#include <sys/lock.h>
45#include <sys/malloc.h>
46#include <sys/mman.h>
47#include <sys/mount.h>
48#include <sys/mutex.h>
49#include <sys/namei.h>
50#include <sys/priv.h>
51#include <sys/proc.h>
52#include <sys/reboot.h>
53#include <sys/resourcevar.h>
54#include <sys/sched.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#include <sys/cpuset.h>
66
67#include <security/mac/mac_framework.h>
68
69#include <vm/vm.h>
70#include <vm/pmap.h>
71#include <vm/vm_kern.h>
72#include <vm/vm_map.h>
73#include <vm/vm_extern.h>
74#include <vm/vm_object.h>
75#include <vm/swap_pager.h>
76
77#ifdef COMPAT_LINUX32
78#include <machine/../linux32/linux.h>
79#include <machine/../linux32/linux32_proto.h>
80#else
81#include <machine/../linux/linux.h>
82#include <machine/../linux/linux_proto.h>
83#endif
84
85#include <compat/linux/linux_file.h>
86#include <compat/linux/linux_mib.h>
87#include <compat/linux/linux_signal.h>
88#include <compat/linux/linux_util.h>
89#include <compat/linux/linux_sysproto.h>
90#include <compat/linux/linux_emul.h>
91#include <compat/linux/linux_misc.h>
92
93int stclohz; /* Statistics clock frequency */
94
95#define BSD_TO_LINUX_SIGNAL(sig) \
96 (((sig) <= LINUX_SIGTBLSZ) ? bsd_to_linux_signal[_SIG_IDX(sig)] : sig)
97
98static unsigned int linux_to_bsd_resource[LINUX_RLIM_NLIMITS] = {
99 RLIMIT_CPU, RLIMIT_FSIZE, RLIMIT_DATA, RLIMIT_STACK,
100 RLIMIT_CORE, RLIMIT_RSS, RLIMIT_NPROC, RLIMIT_NOFILE,
101 RLIMIT_MEMLOCK, RLIMIT_AS
102};
103
104struct l_sysinfo {
105 l_long uptime; /* Seconds since boot */
106 l_ulong loads[3]; /* 1, 5, and 15 minute load averages */
107#define LINUX_SYSINFO_LOADS_SCALE 65536
108 l_ulong totalram; /* Total usable main memory size */
109 l_ulong freeram; /* Available memory size */
110 l_ulong sharedram; /* Amount of shared memory */
111 l_ulong bufferram; /* Memory used by buffers */
112 l_ulong totalswap; /* Total swap space size */
113 l_ulong freeswap; /* swap space still available */
114 l_ushort procs; /* Number of current processes */
115 l_ushort pads;
116 l_ulong totalbig;
117 l_ulong freebig;
118 l_uint mem_unit;
119 char _f[20-2*sizeof(l_long)-sizeof(l_int)]; /* padding */
120};
121int
122linux_sysinfo(struct thread *td, struct linux_sysinfo_args *args)
123{
124 struct l_sysinfo sysinfo;
125 vm_object_t object;
126 int i, j;
127 struct timespec ts;
128
129 getnanouptime(&ts);
130 if (ts.tv_nsec != 0)
131 ts.tv_sec++;
132 sysinfo.uptime = ts.tv_sec;
133
134 /* Use the information from the mib to get our load averages */
135 for (i = 0; i < 3; i++)
136 sysinfo.loads[i] = averunnable.ldavg[i] *
137 LINUX_SYSINFO_LOADS_SCALE / averunnable.fscale;
138
139 sysinfo.totalram = physmem * PAGE_SIZE;
140 sysinfo.freeram = sysinfo.totalram - cnt.v_wire_count * PAGE_SIZE;
141
142 sysinfo.sharedram = 0;
143 mtx_lock(&vm_object_list_mtx);
144 TAILQ_FOREACH(object, &vm_object_list, object_list)
145 if (object->shadow_count > 1)
146 sysinfo.sharedram += object->resident_page_count;
147 mtx_unlock(&vm_object_list_mtx);
148
149 sysinfo.sharedram *= PAGE_SIZE;
150 sysinfo.bufferram = 0;
151
152 swap_pager_status(&i, &j);
153 sysinfo.totalswap = i * PAGE_SIZE;
154 sysinfo.freeswap = (i - j) * PAGE_SIZE;
155
156 sysinfo.procs = nprocs;
157
158 /* The following are only present in newer Linux kernels. */
159 sysinfo.totalbig = 0;
160 sysinfo.freebig = 0;
161 sysinfo.mem_unit = 1;
162
163 return copyout(&sysinfo, args->info, sizeof(sysinfo));
164}
165
166int
167linux_alarm(struct thread *td, struct linux_alarm_args *args)
168{
169 struct itimerval it, old_it;
170 u_int secs;
171 int error;
172
173#ifdef DEBUG
174 if (ldebug(alarm))
175 printf(ARGS(alarm, "%u"), args->secs);
176#endif
177
178 secs = args->secs;
179
180 if (secs > INT_MAX)
181 secs = INT_MAX;
182
183 it.it_value.tv_sec = (long) secs;
184 it.it_value.tv_usec = 0;
185 it.it_interval.tv_sec = 0;
186 it.it_interval.tv_usec = 0;
187 error = kern_setitimer(td, ITIMER_REAL, &it, &old_it);
188 if (error)
189 return (error);
190 if (timevalisset(&old_it.it_value)) {
191 if (old_it.it_value.tv_usec != 0)
192 old_it.it_value.tv_sec++;
193 td->td_retval[0] = old_it.it_value.tv_sec;
194 }
195 return (0);
196}
197
198int
199linux_brk(struct thread *td, struct linux_brk_args *args)
200{
201 struct vmspace *vm = td->td_proc->p_vmspace;
202 vm_offset_t new, old;
203 struct obreak_args /* {
204 char * nsize;
205 } */ tmp;
206
207#ifdef DEBUG
208 if (ldebug(brk))
209 printf(ARGS(brk, "%p"), (void *)(uintptr_t)args->dsend);
210#endif
211 old = (vm_offset_t)vm->vm_daddr + ctob(vm->vm_dsize);
212 new = (vm_offset_t)args->dsend;
213 tmp.nsize = (char *)new;
214 if (((caddr_t)new > vm->vm_daddr) && !obreak(td, &tmp))
215 td->td_retval[0] = (long)new;
216 else
217 td->td_retval[0] = (long)old;
218
219 return 0;
220}
221
222#if defined(__i386__)
223/* XXX: what about amd64/linux32? */
224
225int
226linux_uselib(struct thread *td, struct linux_uselib_args *args)
227{
228 struct nameidata ni;
229 struct vnode *vp;
230 struct exec *a_out;
231 struct vattr attr;
232 vm_offset_t vmaddr;
233 unsigned long file_offset;
234 vm_offset_t buffer;
235 unsigned long bss_size;
236 char *library;
237 int error;
238 int locked, vfslocked;
239
240 LCONVPATHEXIST(td, args->library, &library);
241
242#ifdef DEBUG
243 if (ldebug(uselib))
244 printf(ARGS(uselib, "%s"), library);
245#endif
246
247 a_out = NULL;
248 vfslocked = 0;
249 locked = 0;
250 vp = NULL;
251
252 NDINIT(&ni, LOOKUP, ISOPEN | FOLLOW | LOCKLEAF | MPSAFE | AUDITVNODE1,
253 UIO_SYSSPACE, library, td);
254 error = namei(&ni);
255 LFREEPATH(library);
256 if (error)
257 goto cleanup;
258
259 vp = ni.ni_vp;
260 vfslocked = NDHASGIANT(&ni);
261 NDFREE(&ni, NDF_ONLY_PNBUF);
262
263 /*
264 * From here on down, we have a locked vnode that must be unlocked.
265 * XXX: The code below largely duplicates exec_check_permissions().
266 */
267 locked = 1;
268
269 /* Writable? */
270 if (vp->v_writecount) {
271 error = ETXTBSY;
272 goto cleanup;
273 }
274
275 /* Executable? */
276 error = VOP_GETATTR(vp, &attr, td->td_ucred);
277 if (error)
278 goto cleanup;
279
280 if ((vp->v_mount->mnt_flag & MNT_NOEXEC) ||
281 ((attr.va_mode & 0111) == 0) || (attr.va_type != VREG)) {
282 /* EACCESS is what exec(2) returns. */
283 error = ENOEXEC;
284 goto cleanup;
285 }
286
287 /* Sensible size? */
288 if (attr.va_size == 0) {
289 error = ENOEXEC;
290 goto cleanup;
291 }
292
293 /* Can we access it? */
294 error = VOP_ACCESS(vp, VEXEC, td->td_ucred, td);
295 if (error)
296 goto cleanup;
297
298 /*
299 * XXX: This should use vn_open() so that it is properly authorized,
300 * and to reduce code redundancy all over the place here.
301 * XXX: Not really, it duplicates far more of exec_check_permissions()
302 * than vn_open().
303 */
304#ifdef MAC
305 error = mac_vnode_check_open(td->td_ucred, vp, VREAD);
306 if (error)
307 goto cleanup;
308#endif
309 error = VOP_OPEN(vp, FREAD, td->td_ucred, td, NULL);
310 if (error)
311 goto cleanup;
312
313 /* Pull in executable header into kernel_map */
314 error = vm_mmap(kernel_map, (vm_offset_t *)&a_out, PAGE_SIZE,
315 VM_PROT_READ, VM_PROT_READ, 0, OBJT_VNODE, vp, 0);
316 if (error)
317 goto cleanup;
318
319 /* Is it a Linux binary ? */
320 if (((a_out->a_magic >> 16) & 0xff) != 0x64) {
321 error = ENOEXEC;
322 goto cleanup;
323 }
324
325 /*
326 * While we are here, we should REALLY do some more checks
327 */
328
329 /* Set file/virtual offset based on a.out variant. */
330 switch ((int)(a_out->a_magic & 0xffff)) {
331 case 0413: /* ZMAGIC */
332 file_offset = 1024;
333 break;
334 case 0314: /* QMAGIC */
335 file_offset = 0;
336 break;
337 default:
338 error = ENOEXEC;
339 goto cleanup;
340 }
341
342 bss_size = round_page(a_out->a_bss);
343
344 /* Check various fields in header for validity/bounds. */
345 if (a_out->a_text & PAGE_MASK || a_out->a_data & PAGE_MASK) {
346 error = ENOEXEC;
347 goto cleanup;
348 }
349
350 /* text + data can't exceed file size */
351 if (a_out->a_data + a_out->a_text > attr.va_size) {
352 error = EFAULT;
353 goto cleanup;
354 }
355
356 /*
357 * text/data/bss must not exceed limits
358 * XXX - this is not complete. it should check current usage PLUS
359 * the resources needed by this library.
360 */
361 PROC_LOCK(td->td_proc);
362 if (a_out->a_text > maxtsiz ||
363 a_out->a_data + bss_size > lim_cur(td->td_proc, RLIMIT_DATA)) {
364 PROC_UNLOCK(td->td_proc);
365 error = ENOMEM;
366 goto cleanup;
367 }
368 PROC_UNLOCK(td->td_proc);
369
370 /*
371 * Prevent more writers.
372 * XXX: Note that if any of the VM operations fail below we don't
373 * clear this flag.
374 */
375 vp->v_vflag |= VV_TEXT;
376
377 /*
378 * Lock no longer needed
379 */
380 locked = 0;
381 VOP_UNLOCK(vp, 0);
382 VFS_UNLOCK_GIANT(vfslocked);
383
384 /*
385 * Check if file_offset page aligned. Currently we cannot handle
386 * misalinged file offsets, and so we read in the entire image
387 * (what a waste).
388 */
389 if (file_offset & PAGE_MASK) {
390#ifdef DEBUG
391 printf("uselib: Non page aligned binary %lu\n", file_offset);
392#endif
393 /* Map text+data read/write/execute */
394
395 /* a_entry is the load address and is page aligned */
396 vmaddr = trunc_page(a_out->a_entry);
397
398 /* get anon user mapping, read+write+execute */
399 error = vm_map_find(&td->td_proc->p_vmspace->vm_map, NULL, 0,
400 &vmaddr, a_out->a_text + a_out->a_data, FALSE, VM_PROT_ALL,
401 VM_PROT_ALL, 0);
402 if (error)
403 goto cleanup;
404
405 /* map file into kernel_map */
406 error = vm_mmap(kernel_map, &buffer,
407 round_page(a_out->a_text + a_out->a_data + file_offset),
408 VM_PROT_READ, VM_PROT_READ, 0, OBJT_VNODE, vp,
409 trunc_page(file_offset));
410 if (error)
411 goto cleanup;
412
413 /* copy from kernel VM space to user space */
414 error = copyout(PTRIN(buffer + file_offset),
415 (void *)vmaddr, a_out->a_text + a_out->a_data);
416
417 /* release temporary kernel space */
418 vm_map_remove(kernel_map, buffer, buffer +
419 round_page(a_out->a_text + a_out->a_data + file_offset));
420
421 if (error)
422 goto cleanup;
423 } else {
424#ifdef DEBUG
425 printf("uselib: Page aligned binary %lu\n", file_offset);
426#endif
427 /*
428 * for QMAGIC, a_entry is 20 bytes beyond the load address
429 * to skip the executable header
430 */
431 vmaddr = trunc_page(a_out->a_entry);
432
433 /*
434 * Map it all into the process's space as a single
435 * copy-on-write "data" segment.
436 */
437 error = vm_mmap(&td->td_proc->p_vmspace->vm_map, &vmaddr,
438 a_out->a_text + a_out->a_data, VM_PROT_ALL, VM_PROT_ALL,
439 MAP_PRIVATE | MAP_FIXED, OBJT_VNODE, vp, file_offset);
440 if (error)
441 goto cleanup;
442 }
443#ifdef DEBUG
444 printf("mem=%08lx = %08lx %08lx\n", (long)vmaddr, ((long *)vmaddr)[0],
445 ((long *)vmaddr)[1]);
446#endif
447 if (bss_size != 0) {
448 /* Calculate BSS start address */
449 vmaddr = trunc_page(a_out->a_entry) + a_out->a_text +
450 a_out->a_data;
451
452 /* allocate some 'anon' space */
453 error = vm_map_find(&td->td_proc->p_vmspace->vm_map, NULL, 0,
454 &vmaddr, bss_size, FALSE, VM_PROT_ALL, VM_PROT_ALL, 0);
455 if (error)
456 goto cleanup;
457 }
458
459cleanup:
460 /* Unlock vnode if needed */
461 if (locked) {
462 VOP_UNLOCK(vp, 0);
463 VFS_UNLOCK_GIANT(vfslocked);
464 }
465
466 /* Release the kernel mapping. */
467 if (a_out)
468 vm_map_remove(kernel_map, (vm_offset_t)a_out,
469 (vm_offset_t)a_out + PAGE_SIZE);
470
471 return error;
472}
473
474#endif /* __i386__ */
475
476int
477linux_select(struct thread *td, struct linux_select_args *args)
478{
479 l_timeval ltv;
480 struct timeval tv0, tv1, utv, *tvp;
481 int error;
482
483#ifdef DEBUG
484 if (ldebug(select))
485 printf(ARGS(select, "%d, %p, %p, %p, %p"), args->nfds,
486 (void *)args->readfds, (void *)args->writefds,
487 (void *)args->exceptfds, (void *)args->timeout);
488#endif
489
490 /*
491 * Store current time for computation of the amount of
492 * time left.
493 */
494 if (args->timeout) {
495 if ((error = copyin(args->timeout, <v, sizeof(ltv))))
496 goto select_out;
497 utv.tv_sec = ltv.tv_sec;
498 utv.tv_usec = ltv.tv_usec;
499#ifdef DEBUG
500 if (ldebug(select))
501 printf(LMSG("incoming timeout (%jd/%ld)"),
502 (intmax_t)utv.tv_sec, utv.tv_usec);
503#endif
504
505 if (itimerfix(&utv)) {
506 /*
507 * The timeval was invalid. Convert it to something
508 * valid that will act as it does under Linux.
509 */
510 utv.tv_sec += utv.tv_usec / 1000000;
511 utv.tv_usec %= 1000000;
512 if (utv.tv_usec < 0) {
513 utv.tv_sec -= 1;
514 utv.tv_usec += 1000000;
515 }
516 if (utv.tv_sec < 0)
517 timevalclear(&utv);
518 }
519 microtime(&tv0);
520 tvp = &utv;
521 } else
522 tvp = NULL;
523
524 error = kern_select(td, args->nfds, args->readfds, args->writefds,
525 args->exceptfds, tvp, sizeof(l_int) * 8);
526
527#ifdef DEBUG
528 if (ldebug(select))
529 printf(LMSG("real select returns %d"), error);
530#endif
531 if (error)
532 goto select_out;
533
534 if (args->timeout) {
535 if (td->td_retval[0]) {
536 /*
537 * Compute how much time was left of the timeout,
538 * by subtracting the current time and the time
539 * before we started the call, and subtracting
540 * that result from the user-supplied value.
541 */
542 microtime(&tv1);
543 timevalsub(&tv1, &tv0);
544 timevalsub(&utv, &tv1);
545 if (utv.tv_sec < 0)
546 timevalclear(&utv);
547 } else
548 timevalclear(&utv);
549#ifdef DEBUG
550 if (ldebug(select))
551 printf(LMSG("outgoing timeout (%jd/%ld)"),
552 (intmax_t)utv.tv_sec, utv.tv_usec);
553#endif
554 ltv.tv_sec = utv.tv_sec;
555 ltv.tv_usec = utv.tv_usec;
556 if ((error = copyout(<v, args->timeout, sizeof(ltv))))
557 goto select_out;
558 }
559
560select_out:
561#ifdef DEBUG
562 if (ldebug(select))
563 printf(LMSG("select_out -> %d"), error);
564#endif
565 return error;
566}
567
568int
569linux_mremap(struct thread *td, struct linux_mremap_args *args)
570{
571 struct munmap_args /* {
572 void *addr;
573 size_t len;
574 } */ bsd_args;
575 int error = 0;
576
577#ifdef DEBUG
578 if (ldebug(mremap))
579 printf(ARGS(mremap, "%p, %08lx, %08lx, %08lx"),
580 (void *)(uintptr_t)args->addr,
581 (unsigned long)args->old_len,
582 (unsigned long)args->new_len,
583 (unsigned long)args->flags);
584#endif
585
586 if (args->flags & ~(LINUX_MREMAP_FIXED | LINUX_MREMAP_MAYMOVE)) {
587 td->td_retval[0] = 0;
588 return (EINVAL);
589 }
590
591 /*
592 * Check for the page alignment.
593 * Linux defines PAGE_MASK to be FreeBSD ~PAGE_MASK.
594 */
595 if (args->addr & PAGE_MASK) {
596 td->td_retval[0] = 0;
597 return (EINVAL);
598 }
599
600 args->new_len = round_page(args->new_len);
601 args->old_len = round_page(args->old_len);
602
603 if (args->new_len > args->old_len) {
604 td->td_retval[0] = 0;
605 return ENOMEM;
606 }
607
608 if (args->new_len < args->old_len) {
609 bsd_args.addr =
610 (caddr_t)((uintptr_t)args->addr + args->new_len);
611 bsd_args.len = args->old_len - args->new_len;
612 error = munmap(td, &bsd_args);
613 }
614
615 td->td_retval[0] = error ? 0 : (uintptr_t)args->addr;
616 return error;
617}
618
619#define LINUX_MS_ASYNC 0x0001
620#define LINUX_MS_INVALIDATE 0x0002
621#define LINUX_MS_SYNC 0x0004
622
623int
624linux_msync(struct thread *td, struct linux_msync_args *args)
625{
626 struct msync_args bsd_args;
627
628 bsd_args.addr = (caddr_t)(uintptr_t)args->addr;
629 bsd_args.len = (uintptr_t)args->len;
630 bsd_args.flags = args->fl & ~LINUX_MS_SYNC;
631
632 return msync(td, &bsd_args);
633}
634
635int
636linux_time(struct thread *td, struct linux_time_args *args)
637{
638 struct timeval tv;
639 l_time_t tm;
640 int error;
641
642#ifdef DEBUG
643 if (ldebug(time))
644 printf(ARGS(time, "*"));
645#endif
646
647 microtime(&tv);
648 tm = tv.tv_sec;
649 if (args->tm && (error = copyout(&tm, args->tm, sizeof(tm))))
650 return error;
651 td->td_retval[0] = tm;
652 return 0;
653}
654
655struct l_times_argv {
656 l_clock_t tms_utime;
657 l_clock_t tms_stime;
658 l_clock_t tms_cutime;
659 l_clock_t tms_cstime;
660};
661
662
663/*
664 * Glibc versions prior to 2.2.1 always use hard-coded CLK_TCK value.
665 * Since 2.2.1 Glibc uses value exported from kernel via AT_CLKTCK
666 * auxiliary vector entry.
667 */
668#define CLK_TCK 100
669
670#define CONVOTCK(r) (r.tv_sec * CLK_TCK + r.tv_usec / (1000000 / CLK_TCK))
671#define CONVNTCK(r) (r.tv_sec * stclohz + r.tv_usec / (1000000 / stclohz))
672
673#define CONVTCK(r) (linux_kernver(td) >= LINUX_KERNVER_2004000 ? \
674 CONVNTCK(r) : CONVOTCK(r))
675
676int
677linux_times(struct thread *td, struct linux_times_args *args)
678{
679 struct timeval tv, utime, stime, cutime, cstime;
680 struct l_times_argv tms;
681 struct proc *p;
682 int error;
683
684#ifdef DEBUG
685 if (ldebug(times))
686 printf(ARGS(times, "*"));
687#endif
688
689 if (args->buf != NULL) {
690 p = td->td_proc;
691 PROC_LOCK(p);
692 PROC_SLOCK(p);
693 calcru(p, &utime, &stime);
694 PROC_SUNLOCK(p);
695 calccru(p, &cutime, &cstime);
696 PROC_UNLOCK(p);
697
698 tms.tms_utime = CONVTCK(utime);
699 tms.tms_stime = CONVTCK(stime);
700
701 tms.tms_cutime = CONVTCK(cutime);
702 tms.tms_cstime = CONVTCK(cstime);
703
704 if ((error = copyout(&tms, args->buf, sizeof(tms))))
705 return error;
706 }
707
708 microuptime(&tv);
709 td->td_retval[0] = (int)CONVTCK(tv);
710 return 0;
711}
712
713int
714linux_newuname(struct thread *td, struct linux_newuname_args *args)
715{
716 struct l_new_utsname utsname;
717 char osname[LINUX_MAX_UTSNAME];
718 char osrelease[LINUX_MAX_UTSNAME];
719 char *p;
720
721#ifdef DEBUG
722 if (ldebug(newuname))
723 printf(ARGS(newuname, "*"));
724#endif
725
726 linux_get_osname(td, osname);
727 linux_get_osrelease(td, osrelease);
728
729 bzero(&utsname, sizeof(utsname));
730 strlcpy(utsname.sysname, osname, LINUX_MAX_UTSNAME);
731 getcredhostname(td->td_ucred, utsname.nodename, LINUX_MAX_UTSNAME);
732 getcreddomainname(td->td_ucred, utsname.domainname, LINUX_MAX_UTSNAME);
733 strlcpy(utsname.release, osrelease, LINUX_MAX_UTSNAME);
734 strlcpy(utsname.version, version, LINUX_MAX_UTSNAME);
735 for (p = utsname.version; *p != '\0'; ++p)
736 if (*p == '\n') {
737 *p = '\0';
738 break;
739 }
740 strlcpy(utsname.machine, linux_platform, LINUX_MAX_UTSNAME);
741
742 return (copyout(&utsname, args->buf, sizeof(utsname)));
743}
744
745#if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
746struct l_utimbuf {
747 l_time_t l_actime;
748 l_time_t l_modtime;
749};
750
751int
752linux_utime(struct thread *td, struct linux_utime_args *args)
753{
754 struct timeval tv[2], *tvp;
755 struct l_utimbuf lut;
756 char *fname;
757 int error;
758
759 LCONVPATHEXIST(td, args->fname, &fname);
760
761#ifdef DEBUG
762 if (ldebug(utime))
763 printf(ARGS(utime, "%s, *"), fname);
764#endif
765
766 if (args->times) {
767 if ((error = copyin(args->times, &lut, sizeof lut))) {
768 LFREEPATH(fname);
769 return error;
770 }
771 tv[0].tv_sec = lut.l_actime;
772 tv[0].tv_usec = 0;
773 tv[1].tv_sec = lut.l_modtime;
774 tv[1].tv_usec = 0;
775 tvp = tv;
776 } else
777 tvp = NULL;
778
779 error = kern_utimes(td, fname, UIO_SYSSPACE, tvp, UIO_SYSSPACE);
780 LFREEPATH(fname);
781 return (error);
782}
783
784int
785linux_utimes(struct thread *td, struct linux_utimes_args *args)
786{
787 l_timeval ltv[2];
788 struct timeval tv[2], *tvp = NULL;
789 char *fname;
790 int error;
791
792 LCONVPATHEXIST(td, args->fname, &fname);
793
794#ifdef DEBUG
795 if (ldebug(utimes))
796 printf(ARGS(utimes, "%s, *"), fname);
797#endif
798
799 if (args->tptr != NULL) {
800 if ((error = copyin(args->tptr, ltv, sizeof ltv))) {
801 LFREEPATH(fname);
802 return (error);
803 }
804 tv[0].tv_sec = ltv[0].tv_sec;
805 tv[0].tv_usec = ltv[0].tv_usec;
806 tv[1].tv_sec = ltv[1].tv_sec;
807 tv[1].tv_usec = ltv[1].tv_usec;
808 tvp = tv;
809 }
810
811 error = kern_utimes(td, fname, UIO_SYSSPACE, tvp, UIO_SYSSPACE);
812 LFREEPATH(fname);
813 return (error);
814}
815
816int
817linux_futimesat(struct thread *td, struct linux_futimesat_args *args)
818{
819 l_timeval ltv[2];
820 struct timeval tv[2], *tvp = NULL;
821 char *fname;
822 int error, dfd;
823
824 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
825 LCONVPATHEXIST_AT(td, args->filename, &fname, dfd);
826
827#ifdef DEBUG
828 if (ldebug(futimesat))
829 printf(ARGS(futimesat, "%s, *"), fname);
830#endif
831
832 if (args->utimes != NULL) {
833 if ((error = copyin(args->utimes, ltv, sizeof ltv))) {
834 LFREEPATH(fname);
835 return (error);
836 }
837 tv[0].tv_sec = ltv[0].tv_sec;
838 tv[0].tv_usec = ltv[0].tv_usec;
839 tv[1].tv_sec = ltv[1].tv_sec;
840 tv[1].tv_usec = ltv[1].tv_usec;
841 tvp = tv;
842 }
843
844 error = kern_utimesat(td, dfd, fname, UIO_SYSSPACE, tvp, UIO_SYSSPACE);
845 LFREEPATH(fname);
846 return (error);
847}
848#endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
849
850#define __WCLONE 0x80000000
851
852int
853linux_waitpid(struct thread *td, struct linux_waitpid_args *args)
854{
855 int error, options, tmpstat;
856
857#ifdef DEBUG
858 if (ldebug(waitpid))
859 printf(ARGS(waitpid, "%d, %p, %d"),
860 args->pid, (void *)args->status, args->options);
861#endif
862 /*
863 * this is necessary because the test in kern_wait doesn't work
864 * because we mess with the options here
865 */
866 if (args->options & ~(WUNTRACED | WNOHANG | WCONTINUED | __WCLONE))
867 return (EINVAL);
868
869 options = (args->options & (WNOHANG | WUNTRACED));
870 /* WLINUXCLONE should be equal to __WCLONE, but we make sure */
871 if (args->options & __WCLONE)
872 options |= WLINUXCLONE;
873
874 error = kern_wait(td, args->pid, &tmpstat, options, NULL);
875 if (error)
876 return error;
877
878 if (args->status) {
879 tmpstat &= 0xffff;
880 if (WIFSIGNALED(tmpstat))
881 tmpstat = (tmpstat & 0xffffff80) |
882 BSD_TO_LINUX_SIGNAL(WTERMSIG(tmpstat));
883 else if (WIFSTOPPED(tmpstat))
884 tmpstat = (tmpstat & 0xffff00ff) |
885 (BSD_TO_LINUX_SIGNAL(WSTOPSIG(tmpstat)) << 8);
886 return copyout(&tmpstat, args->status, sizeof(int));
887 }
888
889 return 0;
890}
891
892int
893linux_wait4(struct thread *td, struct linux_wait4_args *args)
894{
895 int error, options, tmpstat;
896 struct rusage ru, *rup;
897 struct proc *p;
898
899#ifdef DEBUG
900 if (ldebug(wait4))
901 printf(ARGS(wait4, "%d, %p, %d, %p"),
902 args->pid, (void *)args->status, args->options,
903 (void *)args->rusage);
904#endif
905
906 options = (args->options & (WNOHANG | WUNTRACED));
907 /* WLINUXCLONE should be equal to __WCLONE, but we make sure */
908 if (args->options & __WCLONE)
909 options |= WLINUXCLONE;
910
911 if (args->rusage != NULL)
912 rup = &ru;
913 else
914 rup = NULL;
915 error = kern_wait(td, args->pid, &tmpstat, options, rup);
916 if (error)
917 return error;
918
919 p = td->td_proc;
920 PROC_LOCK(p);
921 sigqueue_delete(&p->p_sigqueue, SIGCHLD);
922 PROC_UNLOCK(p);
923
924 if (args->status) {
925 tmpstat &= 0xffff;
926 if (WIFSIGNALED(tmpstat))
927 tmpstat = (tmpstat & 0xffffff80) |
928 BSD_TO_LINUX_SIGNAL(WTERMSIG(tmpstat));
929 else if (WIFSTOPPED(tmpstat))
930 tmpstat = (tmpstat & 0xffff00ff) |
931 (BSD_TO_LINUX_SIGNAL(WSTOPSIG(tmpstat)) << 8);
932 error = copyout(&tmpstat, args->status, sizeof(int));
933 }
934 if (args->rusage != NULL && error == 0)
935 error = copyout(&ru, args->rusage, sizeof(ru));
936
937 return (error);
938}
939
940int
941linux_mknod(struct thread *td, struct linux_mknod_args *args)
942{
943 char *path;
944 int error;
945
946 LCONVPATHCREAT(td, args->path, &path);
947
948#ifdef DEBUG
949 if (ldebug(mknod))
950 printf(ARGS(mknod, "%s, %d, %d"), path, args->mode, args->dev);
951#endif
952
953 switch (args->mode & S_IFMT) {
954 case S_IFIFO:
955 case S_IFSOCK:
956 error = kern_mkfifo(td, path, UIO_SYSSPACE, args->mode);
957 break;
958
959 case S_IFCHR:
960 case S_IFBLK:
961 error = kern_mknod(td, path, UIO_SYSSPACE, args->mode,
962 args->dev);
963 break;
964
965 case S_IFDIR:
966 error = EPERM;
967 break;
968
969 case 0:
970 args->mode |= S_IFREG;
971 /* FALLTHROUGH */
972 case S_IFREG:
973 error = kern_open(td, path, UIO_SYSSPACE,
974 O_WRONLY | O_CREAT | O_TRUNC, args->mode);
975 if (error == 0)
976 kern_close(td, td->td_retval[0]);
977 break;
978
979 default:
980 error = EINVAL;
981 break;
982 }
983 LFREEPATH(path);
984 return (error);
985}
986
987int
988linux_mknodat(struct thread *td, struct linux_mknodat_args *args)
989{
990 char *path;
991 int error, dfd;
992
993 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
994 LCONVPATHCREAT_AT(td, args->filename, &path, dfd);
995
996#ifdef DEBUG
997 if (ldebug(mknodat))
998 printf(ARGS(mknodat, "%s, %d, %d"), path, args->mode, args->dev);
999#endif
1000
1001 switch (args->mode & S_IFMT) {
1002 case S_IFIFO:
1003 case S_IFSOCK:
1004 error = kern_mkfifoat(td, dfd, path, UIO_SYSSPACE, args->mode);
1005 break;
1006
1007 case S_IFCHR:
1008 case S_IFBLK:
1009 error = kern_mknodat(td, dfd, path, UIO_SYSSPACE, args->mode,
1010 args->dev);
1011 break;
1012
1013 case S_IFDIR:
1014 error = EPERM;
1015 break;
1016
1017 case 0:
1018 args->mode |= S_IFREG;
1019 /* FALLTHROUGH */
1020 case S_IFREG:
1021 error = kern_openat(td, dfd, path, UIO_SYSSPACE,
1022 O_WRONLY | O_CREAT | O_TRUNC, args->mode);
1023 if (error == 0)
1024 kern_close(td, td->td_retval[0]);
1025 break;
1026
1027 default:
1028 error = EINVAL;
1029 break;
1030 }
1031 LFREEPATH(path);
1032 return (error);
1033}
1034
1035/*
1036 * UGH! This is just about the dumbest idea I've ever heard!!
1037 */
1038int
1039linux_personality(struct thread *td, struct linux_personality_args *args)
1040{
1041#ifdef DEBUG
1042 if (ldebug(personality))
1043 printf(ARGS(personality, "%lu"), (unsigned long)args->per);
1044#endif
1045 if (args->per != 0)
1046 return EINVAL;
1047
1048 /* Yes Jim, it's still a Linux... */
1049 td->td_retval[0] = 0;
1050 return 0;
1051}
1052
1053struct l_itimerval {
1054 l_timeval it_interval;
1055 l_timeval it_value;
1056};
1057
1058#define B2L_ITIMERVAL(bip, lip) \
1059 (bip)->it_interval.tv_sec = (lip)->it_interval.tv_sec; \
1060 (bip)->it_interval.tv_usec = (lip)->it_interval.tv_usec; \
1061 (bip)->it_value.tv_sec = (lip)->it_value.tv_sec; \
1062 (bip)->it_value.tv_usec = (lip)->it_value.tv_usec;
1063
1064int
1065linux_setitimer(struct thread *td, struct linux_setitimer_args *uap)
1066{
1067 int error;
1068 struct l_itimerval ls;
1069 struct itimerval aitv, oitv;
1070
1071#ifdef DEBUG
1072 if (ldebug(setitimer))
1073 printf(ARGS(setitimer, "%p, %p"),
1074 (void *)uap->itv, (void *)uap->oitv);
1075#endif
1076
1077 if (uap->itv == NULL) {
1078 uap->itv = uap->oitv;
1079 return (linux_getitimer(td, (struct linux_getitimer_args *)uap));
1080 }
1081
1082 error = copyin(uap->itv, &ls, sizeof(ls));
1083 if (error != 0)
1084 return (error);
1085 B2L_ITIMERVAL(&aitv, &ls);
1086#ifdef DEBUG
1087 if (ldebug(setitimer)) {
1088 printf("setitimer: value: sec: %jd, usec: %ld\n",
1089 (intmax_t)aitv.it_value.tv_sec, aitv.it_value.tv_usec);
1090 printf("setitimer: interval: sec: %jd, usec: %ld\n",
1091 (intmax_t)aitv.it_interval.tv_sec, aitv.it_interval.tv_usec);
1092 }
1093#endif
1094 error = kern_setitimer(td, uap->which, &aitv, &oitv);
1095 if (error != 0 || uap->oitv == NULL)
1096 return (error);
1097 B2L_ITIMERVAL(&ls, &oitv);
1098
1099 return (copyout(&ls, uap->oitv, sizeof(ls)));
1100}
1101
1102int
1103linux_getitimer(struct thread *td, struct linux_getitimer_args *uap)
1104{
1105 int error;
1106 struct l_itimerval ls;
1107 struct itimerval aitv;
1108
1109#ifdef DEBUG
1110 if (ldebug(getitimer))
1111 printf(ARGS(getitimer, "%p"), (void *)uap->itv);
1112#endif
1113 error = kern_getitimer(td, uap->which, &aitv);
1114 if (error != 0)
1115 return (error);
1116 B2L_ITIMERVAL(&ls, &aitv);
1117 return (copyout(&ls, uap->itv, sizeof(ls)));
1118}
1119
1120int
1121linux_nice(struct thread *td, struct linux_nice_args *args)
1122{
1123 struct setpriority_args bsd_args;
1124
1125 bsd_args.which = PRIO_PROCESS;
1126 bsd_args.who = 0; /* current process */
1127 bsd_args.prio = args->inc;
1128 return setpriority(td, &bsd_args);
1129}
1130
1131int
1132linux_setgroups(struct thread *td, struct linux_setgroups_args *args)
1133{
1134 struct ucred *newcred, *oldcred;
1135 l_gid_t *linux_gidset;
1136 gid_t *bsd_gidset;
1137 int ngrp, error;
1138 struct proc *p;
1139
1140 ngrp = args->gidsetsize;
1141 if (ngrp < 0 || ngrp >= ngroups_max + 1)
1142 return (EINVAL);
1143 linux_gidset = malloc(ngrp * sizeof(*linux_gidset), M_TEMP, M_WAITOK);
1144 error = copyin(args->grouplist, linux_gidset, ngrp * sizeof(l_gid_t));
1145 if (error)
1146 goto out;
1147 newcred = crget();
1148 p = td->td_proc;
1149 PROC_LOCK(p);
1150 oldcred = crcopysafe(p, newcred);
1151
1152 /*
1153 * cr_groups[0] holds egid. Setting the whole set from
1154 * the supplied set will cause egid to be changed too.
1155 * Keep cr_groups[0] unchanged to prevent that.
1156 */
1157
1158 if ((error = priv_check_cred(oldcred, PRIV_CRED_SETGROUPS, 0)) != 0) {
1159 PROC_UNLOCK(p);
1160 crfree(newcred);
1161 goto out;
1162 }
1163
1164 if (ngrp > 0) {
1165 newcred->cr_ngroups = ngrp + 1;
1166
1167 bsd_gidset = newcred->cr_groups;
1168 ngrp--;
1169 while (ngrp >= 0) {
1170 bsd_gidset[ngrp + 1] = linux_gidset[ngrp];
1171 ngrp--;
1172 }
1173 } else
1174 newcred->cr_ngroups = 1;
1175
1176 setsugid(p);
1177 p->p_ucred = newcred;
1178 PROC_UNLOCK(p);
1179 crfree(oldcred);
1180 error = 0;
1181out:
1182 free(linux_gidset, M_TEMP);
1183 return (error);
1184}
1185
1186int
1187linux_getgroups(struct thread *td, struct linux_getgroups_args *args)
1188{
1189 struct ucred *cred;
1190 l_gid_t *linux_gidset;
1191 gid_t *bsd_gidset;
1192 int bsd_gidsetsz, ngrp, error;
1193
1194 cred = td->td_ucred;
1195 bsd_gidset = cred->cr_groups;
1196 bsd_gidsetsz = cred->cr_ngroups - 1;
1197
1198 /*
1199 * cr_groups[0] holds egid. Returning the whole set
1200 * here will cause a duplicate. Exclude cr_groups[0]
1201 * to prevent that.
1202 */
1203
1204 if ((ngrp = args->gidsetsize) == 0) {
1205 td->td_retval[0] = bsd_gidsetsz;
1206 return (0);
1207 }
1208
1209 if (ngrp < bsd_gidsetsz)
1210 return (EINVAL);
1211
1212 ngrp = 0;
1213 linux_gidset = malloc(bsd_gidsetsz * sizeof(*linux_gidset),
1214 M_TEMP, M_WAITOK);
1215 while (ngrp < bsd_gidsetsz) {
1216 linux_gidset[ngrp] = bsd_gidset[ngrp + 1];
1217 ngrp++;
1218 }
1219
1220 error = copyout(linux_gidset, args->grouplist, ngrp * sizeof(l_gid_t));
1221 free(linux_gidset, M_TEMP);
1222 if (error)
1223 return (error);
1224
1225 td->td_retval[0] = ngrp;
1226 return (0);
1227}
1228
1229int
1230linux_setrlimit(struct thread *td, struct linux_setrlimit_args *args)
1231{
1232 struct rlimit bsd_rlim;
1233 struct l_rlimit rlim;
1234 u_int which;
1235 int error;
1236
1237#ifdef DEBUG
1238 if (ldebug(setrlimit))
1239 printf(ARGS(setrlimit, "%d, %p"),
1240 args->resource, (void *)args->rlim);
1241#endif
1242
1243 if (args->resource >= LINUX_RLIM_NLIMITS)
1244 return (EINVAL);
1245
1246 which = linux_to_bsd_resource[args->resource];
1247 if (which == -1)
1248 return (EINVAL);
1249
1250 error = copyin(args->rlim, &rlim, sizeof(rlim));
1251 if (error)
1252 return (error);
1253
1254 bsd_rlim.rlim_cur = (rlim_t)rlim.rlim_cur;
1255 bsd_rlim.rlim_max = (rlim_t)rlim.rlim_max;
1256 return (kern_setrlimit(td, which, &bsd_rlim));
1257}
1258
1259int
1260linux_old_getrlimit(struct thread *td, struct linux_old_getrlimit_args *args)
1261{
1262 struct l_rlimit rlim;
1263 struct proc *p = td->td_proc;
1264 struct rlimit bsd_rlim;
1265 u_int which;
1266
1267#ifdef DEBUG
1268 if (ldebug(old_getrlimit))
1269 printf(ARGS(old_getrlimit, "%d, %p"),
1270 args->resource, (void *)args->rlim);
1271#endif
1272
1273 if (args->resource >= LINUX_RLIM_NLIMITS)
1274 return (EINVAL);
1275
1276 which = linux_to_bsd_resource[args->resource];
1277 if (which == -1)
1278 return (EINVAL);
1279
1280 PROC_LOCK(p);
1281 lim_rlimit(p, which, &bsd_rlim);
1282 PROC_UNLOCK(p);
1283
1284#ifdef COMPAT_LINUX32
1285 rlim.rlim_cur = (unsigned int)bsd_rlim.rlim_cur;
1286 if (rlim.rlim_cur == UINT_MAX)
1287 rlim.rlim_cur = INT_MAX;
1288 rlim.rlim_max = (unsigned int)bsd_rlim.rlim_max;
1289 if (rlim.rlim_max == UINT_MAX)
1290 rlim.rlim_max = INT_MAX;
1291#else
1292 rlim.rlim_cur = (unsigned long)bsd_rlim.rlim_cur;
1293 if (rlim.rlim_cur == ULONG_MAX)
1294 rlim.rlim_cur = LONG_MAX;
1295 rlim.rlim_max = (unsigned long)bsd_rlim.rlim_max;
1296 if (rlim.rlim_max == ULONG_MAX)
1297 rlim.rlim_max = LONG_MAX;
1298#endif
1299 return (copyout(&rlim, args->rlim, sizeof(rlim)));
1300}
1301
1302int
1303linux_getrlimit(struct thread *td, struct linux_getrlimit_args *args)
1304{
1305 struct l_rlimit rlim;
1306 struct proc *p = td->td_proc;
1307 struct rlimit bsd_rlim;
1308 u_int which;
1309
1310#ifdef DEBUG
1311 if (ldebug(getrlimit))
1312 printf(ARGS(getrlimit, "%d, %p"),
1313 args->resource, (void *)args->rlim);
1314#endif
1315
1316 if (args->resource >= LINUX_RLIM_NLIMITS)
1317 return (EINVAL);
1318
1319 which = linux_to_bsd_resource[args->resource];
1320 if (which == -1)
1321 return (EINVAL);
1322
1323 PROC_LOCK(p);
1324 lim_rlimit(p, which, &bsd_rlim);
1325 PROC_UNLOCK(p);
1326
1327 rlim.rlim_cur = (l_ulong)bsd_rlim.rlim_cur;
1328 rlim.rlim_max = (l_ulong)bsd_rlim.rlim_max;
1329 return (copyout(&rlim, args->rlim, sizeof(rlim)));
1330}
1331
1332int
1333linux_sched_setscheduler(struct thread *td,
1334 struct linux_sched_setscheduler_args *args)
1335{
1336 struct sched_setscheduler_args bsd;
1337
1338#ifdef DEBUG
1339 if (ldebug(sched_setscheduler))
1340 printf(ARGS(sched_setscheduler, "%d, %d, %p"),
1341 args->pid, args->policy, (const void *)args->param);
1342#endif
1343
1344 switch (args->policy) {
1345 case LINUX_SCHED_OTHER:
1346 bsd.policy = SCHED_OTHER;
1347 break;
1348 case LINUX_SCHED_FIFO:
1349 bsd.policy = SCHED_FIFO;
1350 break;
1351 case LINUX_SCHED_RR:
1352 bsd.policy = SCHED_RR;
1353 break;
1354 default:
1355 return EINVAL;
1356 }
1357
1358 bsd.pid = args->pid;
1359 bsd.param = (struct sched_param *)args->param;
1360 return sched_setscheduler(td, &bsd);
1361}
1362
1363int
1364linux_sched_getscheduler(struct thread *td,
1365 struct linux_sched_getscheduler_args *args)
1366{
1367 struct sched_getscheduler_args bsd;
1368 int error;
1369
1370#ifdef DEBUG
1371 if (ldebug(sched_getscheduler))
1372 printf(ARGS(sched_getscheduler, "%d"), args->pid);
1373#endif
1374
1375 bsd.pid = args->pid;
1376 error = sched_getscheduler(td, &bsd);
1377
1378 switch (td->td_retval[0]) {
1379 case SCHED_OTHER:
1380 td->td_retval[0] = LINUX_SCHED_OTHER;
1381 break;
1382 case SCHED_FIFO:
1383 td->td_retval[0] = LINUX_SCHED_FIFO;
1384 break;
1385 case SCHED_RR:
1386 td->td_retval[0] = LINUX_SCHED_RR;
1387 break;
1388 }
1389
1390 return error;
1391}
1392
1393int
1394linux_sched_get_priority_max(struct thread *td,
1395 struct linux_sched_get_priority_max_args *args)
1396{
1397 struct sched_get_priority_max_args bsd;
1398
1399#ifdef DEBUG
1400 if (ldebug(sched_get_priority_max))
1401 printf(ARGS(sched_get_priority_max, "%d"), args->policy);
1402#endif
1403
1404 switch (args->policy) {
1405 case LINUX_SCHED_OTHER:
1406 bsd.policy = SCHED_OTHER;
1407 break;
1408 case LINUX_SCHED_FIFO:
1409 bsd.policy = SCHED_FIFO;
1410 break;
1411 case LINUX_SCHED_RR:
1412 bsd.policy = SCHED_RR;
1413 break;
1414 default:
1415 return EINVAL;
1416 }
1417 return sched_get_priority_max(td, &bsd);
1418}
1419
1420int
1421linux_sched_get_priority_min(struct thread *td,
1422 struct linux_sched_get_priority_min_args *args)
1423{
1424 struct sched_get_priority_min_args bsd;
1425
1426#ifdef DEBUG
1427 if (ldebug(sched_get_priority_min))
1428 printf(ARGS(sched_get_priority_min, "%d"), args->policy);
1429#endif
1430
1431 switch (args->policy) {
1432 case LINUX_SCHED_OTHER:
1433 bsd.policy = SCHED_OTHER;
1434 break;
1435 case LINUX_SCHED_FIFO:
1436 bsd.policy = SCHED_FIFO;
1437 break;
1438 case LINUX_SCHED_RR:
1439 bsd.policy = SCHED_RR;
1440 break;
1441 default:
1442 return EINVAL;
1443 }
1444 return sched_get_priority_min(td, &bsd);
1445}
1446
1447#define REBOOT_CAD_ON 0x89abcdef
1448#define REBOOT_CAD_OFF 0
1449#define REBOOT_HALT 0xcdef0123
1450#define REBOOT_RESTART 0x01234567
1451#define REBOOT_RESTART2 0xA1B2C3D4
1452#define REBOOT_POWEROFF 0x4321FEDC
1453#define REBOOT_MAGIC1 0xfee1dead
1454#define REBOOT_MAGIC2 0x28121969
1455#define REBOOT_MAGIC2A 0x05121996
1456#define REBOOT_MAGIC2B 0x16041998
1457
1458int
1459linux_reboot(struct thread *td, struct linux_reboot_args *args)
1460{
1461 struct reboot_args bsd_args;
1462
1463#ifdef DEBUG
1464 if (ldebug(reboot))
1465 printf(ARGS(reboot, "0x%x"), args->cmd);
1466#endif
1467
1468 if (args->magic1 != REBOOT_MAGIC1)
1469 return EINVAL;
1470
1471 switch (args->magic2) {
1472 case REBOOT_MAGIC2:
1473 case REBOOT_MAGIC2A:
1474 case REBOOT_MAGIC2B:
1475 break;
1476 default:
1477 return EINVAL;
1478 }
1479
1480 switch (args->cmd) {
1481 case REBOOT_CAD_ON:
1482 case REBOOT_CAD_OFF:
1483 return (priv_check(td, PRIV_REBOOT));
1484 case REBOOT_HALT:
1485 bsd_args.opt = RB_HALT;
1486 break;
1487 case REBOOT_RESTART:
1488 case REBOOT_RESTART2:
1489 bsd_args.opt = 0;
1490 break;
1491 case REBOOT_POWEROFF:
1492 bsd_args.opt = RB_POWEROFF;
1493 break;
1494 default:
1495 return EINVAL;
1496 }
1497 return reboot(td, &bsd_args);
1498}
1499
1500
1501/*
1502 * The FreeBSD native getpid(2), getgid(2) and getuid(2) also modify
1503 * td->td_retval[1] when COMPAT_43 is defined. This clobbers registers that
1504 * are assumed to be preserved. The following lightweight syscalls fixes
1505 * this. See also linux_getgid16() and linux_getuid16() in linux_uid16.c
1506 *
1507 * linux_getpid() - MP SAFE
1508 * linux_getgid() - MP SAFE
1509 * linux_getuid() - MP SAFE
1510 */
1511
1512int
1513linux_getpid(struct thread *td, struct linux_getpid_args *args)
1514{
1515 struct linux_emuldata *em;
1516
1517#ifdef DEBUG
1518 if (ldebug(getpid))
1519 printf(ARGS(getpid, ""));
1520#endif
1521
1522 if (linux_use26(td)) {
1523 em = em_find(td->td_proc, EMUL_DONTLOCK);
1524 KASSERT(em != NULL, ("getpid: emuldata not found.\n"));
1525 td->td_retval[0] = em->shared->group_pid;
1526 } else {
1527 td->td_retval[0] = td->td_proc->p_pid;
1528 }
1529
1530 return (0);
1531}
1532
1533int
1534linux_gettid(struct thread *td, struct linux_gettid_args *args)
1535{
1536
1537#ifdef DEBUG
1538 if (ldebug(gettid))
1539 printf(ARGS(gettid, ""));
1540#endif
1541
1542 td->td_retval[0] = td->td_proc->p_pid;
1543 return (0);
1544}
1545
1546
1547int
1548linux_getppid(struct thread *td, struct linux_getppid_args *args)
1549{
1550 struct linux_emuldata *em;
1551 struct proc *p, *pp;
1552
1553#ifdef DEBUG
1554 if (ldebug(getppid))
1555 printf(ARGS(getppid, ""));
1556#endif
1557
1558 if (!linux_use26(td)) {
1559 PROC_LOCK(td->td_proc);
1560 td->td_retval[0] = td->td_proc->p_pptr->p_pid;
1561 PROC_UNLOCK(td->td_proc);
1562 return (0);
1563 }
1564
1565 em = em_find(td->td_proc, EMUL_DONTLOCK);
1566
1567 KASSERT(em != NULL, ("getppid: process emuldata not found.\n"));
1568
1569 /* find the group leader */
1570 p = pfind(em->shared->group_pid);
1571
1572 if (p == NULL) {
1573#ifdef DEBUG
1574 printf(LMSG("parent process not found.\n"));
1575#endif
1576 return (0);
1577 }
1578
1579 pp = p->p_pptr; /* switch to parent */
1580 PROC_LOCK(pp);
1581 PROC_UNLOCK(p);
1582
1583 /* if its also linux process */
1584 if (pp->p_sysent == &elf_linux_sysvec) {
1585 em = em_find(pp, EMUL_DONTLOCK);
1586 KASSERT(em != NULL, ("getppid: parent emuldata not found.\n"));
1587
1588 td->td_retval[0] = em->shared->group_pid;
1589 } else
1590 td->td_retval[0] = pp->p_pid;
1591
1592 PROC_UNLOCK(pp);
1593
1594 return (0);
1595}
1596
1597int
1598linux_getgid(struct thread *td, struct linux_getgid_args *args)
1599{
1600
1601#ifdef DEBUG
1602 if (ldebug(getgid))
1603 printf(ARGS(getgid, ""));
1604#endif
1605
1606 td->td_retval[0] = td->td_ucred->cr_rgid;
1607 return (0);
1608}
1609
1610int
1611linux_getuid(struct thread *td, struct linux_getuid_args *args)
1612{
1613
1614#ifdef DEBUG
1615 if (ldebug(getuid))
1616 printf(ARGS(getuid, ""));
1617#endif
1618
1619 td->td_retval[0] = td->td_ucred->cr_ruid;
1620 return (0);
1621}
1622
1623
1624int
1625linux_getsid(struct thread *td, struct linux_getsid_args *args)
1626{
1627 struct getsid_args bsd;
1628
1629#ifdef DEBUG
1630 if (ldebug(getsid))
1631 printf(ARGS(getsid, "%i"), args->pid);
1632#endif
1633
1634 bsd.pid = args->pid;
1635 return getsid(td, &bsd);
1636}
1637
1638int
1639linux_nosys(struct thread *td, struct nosys_args *ignore)
1640{
1641
1642 return (ENOSYS);
1643}
1644
1645int
1646linux_getpriority(struct thread *td, struct linux_getpriority_args *args)
1647{
1648 struct getpriority_args bsd_args;
1649 int error;
1650
1651#ifdef DEBUG
1652 if (ldebug(getpriority))
1653 printf(ARGS(getpriority, "%i, %i"), args->which, args->who);
1654#endif
1655
1656 bsd_args.which = args->which;
1657 bsd_args.who = args->who;
1658 error = getpriority(td, &bsd_args);
1659 td->td_retval[0] = 20 - td->td_retval[0];
1660 return error;
1661}
1662
1663int
1664linux_sethostname(struct thread *td, struct linux_sethostname_args *args)
1665{
1666 int name[2];
1667
1668#ifdef DEBUG
1669 if (ldebug(sethostname))
1670 printf(ARGS(sethostname, "*, %i"), args->len);
1671#endif
1672
1673 name[0] = CTL_KERN;
1674 name[1] = KERN_HOSTNAME;
1675 return (userland_sysctl(td, name, 2, 0, 0, 0, args->hostname,
1676 args->len, 0, 0));
1677}
1678
1679int
1680linux_setdomainname(struct thread *td, struct linux_setdomainname_args *args)
1681{
1682 int name[2];
1683
1684#ifdef DEBUG
1685 if (ldebug(setdomainname))
1686 printf(ARGS(setdomainname, "*, %i"), args->len);
1687#endif
1688
1689 name[0] = CTL_KERN;
1690 name[1] = KERN_NISDOMAINNAME;
1691 return (userland_sysctl(td, name, 2, 0, 0, 0, args->name,
1692 args->len, 0, 0));
1693}
1694
1695int
1696linux_exit_group(struct thread *td, struct linux_exit_group_args *args)
1697{
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