1 /*-
2 * Copyright (c) 2002 Doug Rabson
3 * Copyright (c) 1994-1995 Søren Schmidt
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer
11 * in this position and unchanged.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD: releng/5.4/sys/compat/linux/linux_misc.c 144437 2005-03-31 22:17:42Z sobomax $");
32
33 #include "opt_mac.h"
34
35 #include <sys/param.h>
36 #include <sys/blist.h>
37 #include <sys/fcntl.h>
38 #if defined(__i386__) || defined(__alpha__)
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/mac.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/proc.h>
52 #include <sys/reboot.h>
53 #include <sys/resourcevar.h>
54 #include <sys/signalvar.h>
55 #include <sys/stat.h>
56 #include <sys/syscallsubr.h>
57 #include <sys/sysctl.h>
58 #include <sys/sysproto.h>
59 #include <sys/systm.h>
60 #include <sys/time.h>
61 #include <sys/vmmeter.h>
62 #include <sys/vnode.h>
63 #include <sys/wait.h>
64
65 #include <vm/vm.h>
66 #include <vm/pmap.h>
67 #include <vm/vm_kern.h>
68 #include <vm/vm_map.h>
69 #include <vm/vm_extern.h>
70 #include <vm/vm_object.h>
71 #include <vm/swap_pager.h>
72
73 #include <posix4/sched.h>
74
75 #include "opt_compat.h"
76
77 #include <compat/linux/linux_sysproto.h>
78
79 #ifdef COMPAT_LINUX32
80 #include <machine/../linux32/linux.h>
81 #include <machine/../linux32/linux32_proto.h>
82 #else
83 #include <machine/../linux/linux.h>
84 #include <machine/../linux/linux_proto.h>
85 #endif
86
87 #include <compat/linux/linux_mib.h>
88 #include <compat/linux/linux_util.h>
89
90 #ifdef __i386__
91 #include <machine/cputypes.h>
92 #endif
93
94 #ifdef __alpha__
95 #define BSD_TO_LINUX_SIGNAL(sig) (sig)
96 #else
97 #define BSD_TO_LINUX_SIGNAL(sig) \
98 (((sig) <= LINUX_SIGTBLSZ) ? bsd_to_linux_signal[_SIG_IDX(sig)] : sig)
99 #endif
100
101 #ifndef __alpha__
102 static 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, -1
106 };
107 #endif /*!__alpha__*/
108
109 struct l_sysinfo {
110 l_long uptime; /* Seconds since boot */
111 l_ulong loads[3]; /* 1, 5, and 15 minute load averages */
112 #define LINUX_SYSINFO_LOADS_SCALE 65536
113 l_ulong totalram; /* Total usable main memory size */
114 l_ulong freeram; /* Available memory size */
115 l_ulong sharedram; /* Amount of shared memory */
116 l_ulong bufferram; /* Memory used by buffers */
117 l_ulong totalswap; /* Total swap space size */
118 l_ulong freeswap; /* swap space still available */
119 l_ushort procs; /* Number of current processes */
120 l_ulong totalbig;
121 l_ulong freebig;
122 l_uint mem_unit;
123 char _f[6]; /* Pads structure to 64 bytes */
124 };
125 #ifndef __alpha__
126 int
127 linux_sysinfo(struct thread *td, struct linux_sysinfo_args *args)
128 {
129 struct l_sysinfo sysinfo;
130 vm_object_t object;
131 int i, j;
132 struct timespec ts;
133
134 /* Uptime is copied out of print_uptime() in kern_shutdown.c */
135 getnanouptime(&ts);
136 i = 0;
137 if (ts.tv_sec >= 86400) {
138 ts.tv_sec %= 86400;
139 i = 1;
140 }
141 if (i || ts.tv_sec >= 3600) {
142 ts.tv_sec %= 3600;
143 i = 1;
144 }
145 if (i || ts.tv_sec >= 60) {
146 ts.tv_sec %= 60;
147 i = 1;
148 }
149 sysinfo.uptime=ts.tv_sec;
150
151 /* Use the information from the mib to get our load averages */
152 for (i = 0; i < 3; i++)
153 sysinfo.loads[i] = averunnable.ldavg[i] *
154 LINUX_SYSINFO_LOADS_SCALE / averunnable.fscale;
155
156 sysinfo.totalram = physmem * PAGE_SIZE;
157 sysinfo.freeram = sysinfo.totalram - cnt.v_wire_count * PAGE_SIZE;
158
159 sysinfo.sharedram = 0;
160 mtx_lock(&vm_object_list_mtx);
161 TAILQ_FOREACH(object, &vm_object_list, object_list)
162 if (object->shadow_count > 1)
163 sysinfo.sharedram += object->resident_page_count;
164 mtx_unlock(&vm_object_list_mtx);
165
166 sysinfo.sharedram *= PAGE_SIZE;
167 sysinfo.bufferram = 0;
168
169 swap_pager_status(&i, &j);
170 sysinfo.totalswap= i * PAGE_SIZE;
171 sysinfo.freeswap = (i - j) * PAGE_SIZE;
172
173 sysinfo.procs = nprocs;
174
175 /* The following are only present in newer Linux kernels. */
176 sysinfo.totalbig = 0;
177 sysinfo.freebig = 0;
178 sysinfo.mem_unit = 1;
179
180 return copyout(&sysinfo, args->info, sizeof(sysinfo));
181 }
182 #endif /*!__alpha__*/
183
184 #ifndef __alpha__
185 int
186 linux_alarm(struct thread *td, struct linux_alarm_args *args)
187 {
188 struct itimerval it, old_it;
189 struct timeval tv;
190 struct proc *p;
191
192 #ifdef DEBUG
193 if (ldebug(alarm))
194 printf(ARGS(alarm, "%u"), args->secs);
195 #endif
196
197 if (args->secs > 100000000)
198 return EINVAL;
199
200 it.it_value.tv_sec = (long)args->secs;
201 it.it_value.tv_usec = 0;
202 it.it_interval.tv_sec = 0;
203 it.it_interval.tv_usec = 0;
204 p = td->td_proc;
205 PROC_LOCK(p);
206 old_it = p->p_realtimer;
207 getmicrouptime(&tv);
208 if (timevalisset(&old_it.it_value))
209 callout_stop(&p->p_itcallout);
210 if (it.it_value.tv_sec != 0) {
211 callout_reset(&p->p_itcallout, tvtohz(&it.it_value),
212 realitexpire, p);
213 timevaladd(&it.it_value, &tv);
214 }
215 p->p_realtimer = it;
216 PROC_UNLOCK(p);
217 if (timevalcmp(&old_it.it_value, &tv, >)) {
218 timevalsub(&old_it.it_value, &tv);
219 if (old_it.it_value.tv_usec != 0)
220 old_it.it_value.tv_sec++;
221 td->td_retval[0] = old_it.it_value.tv_sec;
222 }
223 return 0;
224 }
225 #endif /*!__alpha__*/
226
227 int
228 linux_brk(struct thread *td, struct linux_brk_args *args)
229 {
230 struct vmspace *vm = td->td_proc->p_vmspace;
231 vm_offset_t new, old;
232 struct obreak_args /* {
233 char * nsize;
234 } */ tmp;
235
236 #ifdef DEBUG
237 if (ldebug(brk))
238 printf(ARGS(brk, "%p"), (void *)(uintptr_t)args->dsend);
239 #endif
240 old = (vm_offset_t)vm->vm_daddr + ctob(vm->vm_dsize);
241 new = (vm_offset_t)args->dsend;
242 tmp.nsize = (char *) new;
243 if (((caddr_t)new > vm->vm_daddr) && !obreak(td, &tmp))
244 td->td_retval[0] = (long)new;
245 else
246 td->td_retval[0] = (long)old;
247
248 return 0;
249 }
250
251 #if defined(__i386__) || defined(__alpha__)
252
253 int
254 linux_uselib(struct thread *td, struct linux_uselib_args *args)
255 {
256 struct nameidata ni;
257 struct vnode *vp;
258 struct exec *a_out;
259 struct vattr attr;
260 vm_offset_t vmaddr;
261 unsigned long file_offset;
262 vm_offset_t buffer;
263 unsigned long bss_size;
264 char *library;
265 int error;
266 int locked;
267
268 LCONVPATHEXIST(td, args->library, &library);
269
270 #ifdef DEBUG
271 if (ldebug(uselib))
272 printf(ARGS(uselib, "%s"), library);
273 #endif
274
275 a_out = NULL;
276 locked = 0;
277 vp = NULL;
278
279 /*
280 * XXX: This code should make use of vn_open(), rather than doing
281 * all this stuff itself.
282 */
283 NDINIT(&ni, LOOKUP, FOLLOW|LOCKLEAF, UIO_SYSSPACE, library, td);
284 error = namei(&ni);
285 LFREEPATH(library);
286 if (error)
287 goto cleanup;
288
289 vp = ni.ni_vp;
290 /*
291 * XXX - This looks like a bogus check. A LOCKLEAF namei should not
292 * succeed without returning a vnode.
293 */
294 if (vp == NULL) {
295 error = ENOEXEC; /* ?? */
296 goto cleanup;
297 }
298 NDFREE(&ni, NDF_ONLY_PNBUF);
299
300 /*
301 * From here on down, we have a locked vnode that must be unlocked.
302 */
303 locked++;
304
305 /* Writable? */
306 if (vp->v_writecount) {
307 error = ETXTBSY;
308 goto cleanup;
309 }
310
311 /* Executable? */
312 error = VOP_GETATTR(vp, &attr, td->td_ucred, td);
313 if (error)
314 goto cleanup;
315
316 if ((vp->v_mount->mnt_flag & MNT_NOEXEC) ||
317 ((attr.va_mode & 0111) == 0) || (attr.va_type != VREG)) {
318 error = ENOEXEC;
319 goto cleanup;
320 }
321
322 /* Sensible size? */
323 if (attr.va_size == 0) {
324 error = ENOEXEC;
325 goto cleanup;
326 }
327
328 /* Can we access it? */
329 error = VOP_ACCESS(vp, VEXEC, td->td_ucred, td);
330 if (error)
331 goto cleanup;
332
333 /*
334 * XXX: This should use vn_open() so that it is properly authorized,
335 * and to reduce code redundancy all over the place here.
336 */
337 #ifdef MAC
338 error = mac_check_vnode_open(td->td_ucred, vp, FREAD);
339 if (error)
340 goto cleanup;
341 #endif
342 error = VOP_OPEN(vp, FREAD, td->td_ucred, td, -1);
343 if (error)
344 goto cleanup;
345
346 /* Pull in executable header into kernel_map */
347 error = vm_mmap(kernel_map, (vm_offset_t *)&a_out, PAGE_SIZE,
348 VM_PROT_READ, VM_PROT_READ, 0, (caddr_t)vp, 0);
349 /*
350 * Lock no longer needed
351 */
352 locked = 0;
353 VOP_UNLOCK(vp, 0, td);
354
355 if (error)
356 goto cleanup;
357
358 /* Is it a Linux binary ? */
359 if (((a_out->a_magic >> 16) & 0xff) != 0x64) {
360 error = ENOEXEC;
361 goto cleanup;
362 }
363
364 /*
365 * While we are here, we should REALLY do some more checks
366 */
367
368 /* Set file/virtual offset based on a.out variant. */
369 switch ((int)(a_out->a_magic & 0xffff)) {
370 case 0413: /* ZMAGIC */
371 file_offset = 1024;
372 break;
373 case 0314: /* QMAGIC */
374 file_offset = 0;
375 break;
376 default:
377 error = ENOEXEC;
378 goto cleanup;
379 }
380
381 bss_size = round_page(a_out->a_bss);
382
383 /* Check various fields in header for validity/bounds. */
384 if (a_out->a_text & PAGE_MASK || a_out->a_data & PAGE_MASK) {
385 error = ENOEXEC;
386 goto cleanup;
387 }
388
389 /* text + data can't exceed file size */
390 if (a_out->a_data + a_out->a_text > attr.va_size) {
391 error = EFAULT;
392 goto cleanup;
393 }
394
395 /*
396 * text/data/bss must not exceed limits
397 * XXX - this is not complete. it should check current usage PLUS
398 * the resources needed by this library.
399 */
400 PROC_LOCK(td->td_proc);
401 if (a_out->a_text > maxtsiz ||
402 a_out->a_data + bss_size > lim_cur(td->td_proc, RLIMIT_DATA)) {
403 PROC_UNLOCK(td->td_proc);
404 error = ENOMEM;
405 goto cleanup;
406 }
407 PROC_UNLOCK(td->td_proc);
408
409 mp_fixme("Unlocked vflags access.");
410 /* prevent more writers */
411 vp->v_vflag |= VV_TEXT;
412
413 /*
414 * Check if file_offset page aligned. Currently we cannot handle
415 * misalinged file offsets, and so we read in the entire image
416 * (what a waste).
417 */
418 if (file_offset & PAGE_MASK) {
419 #ifdef DEBUG
420 printf("uselib: Non page aligned binary %lu\n", file_offset);
421 #endif
422 /* Map text+data read/write/execute */
423
424 /* a_entry is the load address and is page aligned */
425 vmaddr = trunc_page(a_out->a_entry);
426
427 /* get anon user mapping, read+write+execute */
428 error = vm_map_find(&td->td_proc->p_vmspace->vm_map, NULL, 0,
429 &vmaddr, a_out->a_text + a_out->a_data, FALSE, VM_PROT_ALL,
430 VM_PROT_ALL, 0);
431 if (error)
432 goto cleanup;
433
434 /* map file into kernel_map */
435 error = vm_mmap(kernel_map, &buffer,
436 round_page(a_out->a_text + a_out->a_data + file_offset),
437 VM_PROT_READ, VM_PROT_READ, 0, (caddr_t)vp,
438 trunc_page(file_offset));
439 if (error)
440 goto cleanup;
441
442 /* copy from kernel VM space to user space */
443 error = copyout(PTRIN(buffer + file_offset),
444 (void *)vmaddr, a_out->a_text + a_out->a_data);
445
446 /* release temporary kernel space */
447 vm_map_remove(kernel_map, buffer, buffer +
448 round_page(a_out->a_text + a_out->a_data + file_offset));
449
450 if (error)
451 goto cleanup;
452 } else {
453 #ifdef DEBUG
454 printf("uselib: Page aligned binary %lu\n", file_offset);
455 #endif
456 /*
457 * for QMAGIC, a_entry is 20 bytes beyond the load address
458 * to skip the executable header
459 */
460 vmaddr = trunc_page(a_out->a_entry);
461
462 /*
463 * Map it all into the process's space as a single
464 * copy-on-write "data" segment.
465 */
466 error = vm_mmap(&td->td_proc->p_vmspace->vm_map, &vmaddr,
467 a_out->a_text + a_out->a_data, VM_PROT_ALL, VM_PROT_ALL,
468 MAP_PRIVATE | MAP_FIXED, (caddr_t)vp, file_offset);
469 if (error)
470 goto cleanup;
471 }
472 #ifdef DEBUG
473 printf("mem=%08lx = %08lx %08lx\n", (long)vmaddr, ((long*)vmaddr)[0],
474 ((long*)vmaddr)[1]);
475 #endif
476 if (bss_size != 0) {
477 /* Calculate BSS start address */
478 vmaddr = trunc_page(a_out->a_entry) + a_out->a_text +
479 a_out->a_data;
480
481 /* allocate some 'anon' space */
482 error = vm_map_find(&td->td_proc->p_vmspace->vm_map, NULL, 0,
483 &vmaddr, bss_size, FALSE, VM_PROT_ALL, VM_PROT_ALL, 0);
484 if (error)
485 goto cleanup;
486 }
487
488 cleanup:
489 /* Unlock vnode if needed */
490 if (locked)
491 VOP_UNLOCK(vp, 0, td);
492
493 /* Release the kernel mapping. */
494 if (a_out)
495 vm_map_remove(kernel_map, (vm_offset_t)a_out,
496 (vm_offset_t)a_out + PAGE_SIZE);
497
498 return error;
499 }
500
501 #endif /* __i386__ || __alpha__ */
502
503 int
504 linux_select(struct thread *td, struct linux_select_args *args)
505 {
506 l_timeval ltv;
507 struct timeval tv0, tv1, utv, *tvp;
508 int error;
509
510 #ifdef DEBUG
511 if (ldebug(select))
512 printf(ARGS(select, "%d, %p, %p, %p, %p"), args->nfds,
513 (void *)args->readfds, (void *)args->writefds,
514 (void *)args->exceptfds, (void *)args->timeout);
515 #endif
516
517 /*
518 * Store current time for computation of the amount of
519 * time left.
520 */
521 if (args->timeout) {
522 if ((error = copyin(args->timeout, <v, sizeof(ltv))))
523 goto select_out;
524 utv.tv_sec = ltv.tv_sec;
525 utv.tv_usec = ltv.tv_usec;
526 #ifdef DEBUG
527 if (ldebug(select))
528 printf(LMSG("incoming timeout (%ld/%ld)"),
529 utv.tv_sec, utv.tv_usec);
530 #endif
531
532 if (itimerfix(&utv)) {
533 /*
534 * The timeval was invalid. Convert it to something
535 * valid that will act as it does under Linux.
536 */
537 utv.tv_sec += utv.tv_usec / 1000000;
538 utv.tv_usec %= 1000000;
539 if (utv.tv_usec < 0) {
540 utv.tv_sec -= 1;
541 utv.tv_usec += 1000000;
542 }
543 if (utv.tv_sec < 0)
544 timevalclear(&utv);
545 }
546 microtime(&tv0);
547 tvp = &utv;
548 } else
549 tvp = NULL;
550
551 error = kern_select(td, args->nfds, args->readfds, args->writefds,
552 args->exceptfds, tvp);
553
554 #ifdef DEBUG
555 if (ldebug(select))
556 printf(LMSG("real select returns %d"), error);
557 #endif
558 if (error) {
559 /*
560 * See fs/select.c in the Linux kernel. Without this,
561 * Maelstrom doesn't work.
562 */
563 if (error == ERESTART)
564 error = EINTR;
565 goto select_out;
566 }
567
568 if (args->timeout) {
569 if (td->td_retval[0]) {
570 /*
571 * Compute how much time was left of the timeout,
572 * by subtracting the current time and the time
573 * before we started the call, and subtracting
574 * that result from the user-supplied value.
575 */
576 microtime(&tv1);
577 timevalsub(&tv1, &tv0);
578 timevalsub(&utv, &tv1);
579 if (utv.tv_sec < 0)
580 timevalclear(&utv);
581 } else
582 timevalclear(&utv);
583 #ifdef DEBUG
584 if (ldebug(select))
585 printf(LMSG("outgoing timeout (%ld/%ld)"),
586 utv.tv_sec, utv.tv_usec);
587 #endif
588 ltv.tv_sec = utv.tv_sec;
589 ltv.tv_usec = utv.tv_usec;
590 if ((error = copyout(<v, args->timeout, sizeof(ltv))))
591 goto select_out;
592 }
593
594 select_out:
595 #ifdef DEBUG
596 if (ldebug(select))
597 printf(LMSG("select_out -> %d"), error);
598 #endif
599 return error;
600 }
601
602 int
603 linux_mremap(struct thread *td, struct linux_mremap_args *args)
604 {
605 struct munmap_args /* {
606 void *addr;
607 size_t len;
608 } */ bsd_args;
609 int error = 0;
610
611 #ifdef DEBUG
612 if (ldebug(mremap))
613 printf(ARGS(mremap, "%p, %08lx, %08lx, %08lx"),
614 (void *)(uintptr_t)args->addr,
615 (unsigned long)args->old_len,
616 (unsigned long)args->new_len,
617 (unsigned long)args->flags);
618 #endif
619 args->new_len = round_page(args->new_len);
620 args->old_len = round_page(args->old_len);
621
622 if (args->new_len > args->old_len) {
623 td->td_retval[0] = 0;
624 return ENOMEM;
625 }
626
627 if (args->new_len < args->old_len) {
628 bsd_args.addr =
629 (caddr_t)((uintptr_t)args->addr + args->new_len);
630 bsd_args.len = args->old_len - args->new_len;
631 error = munmap(td, &bsd_args);
632 }
633
634 td->td_retval[0] = error ? 0 : (uintptr_t)args->addr;
635 return error;
636 }
637
638 #define LINUX_MS_ASYNC 0x0001
639 #define LINUX_MS_INVALIDATE 0x0002
640 #define LINUX_MS_SYNC 0x0004
641
642 int
643 linux_msync(struct thread *td, struct linux_msync_args *args)
644 {
645 struct msync_args bsd_args;
646
647 bsd_args.addr = (caddr_t)(uintptr_t)args->addr;
648 bsd_args.len = (uintptr_t)args->len;
649 bsd_args.flags = args->fl & ~LINUX_MS_SYNC;
650
651 return msync(td, &bsd_args);
652 }
653
654 #ifndef __alpha__
655 int
656 linux_time(struct thread *td, struct linux_time_args *args)
657 {
658 struct timeval tv;
659 l_time_t tm;
660 int error;
661
662 #ifdef DEBUG
663 if (ldebug(time))
664 printf(ARGS(time, "*"));
665 #endif
666
667 microtime(&tv);
668 tm = tv.tv_sec;
669 if (args->tm && (error = copyout(&tm, args->tm, sizeof(tm))))
670 return error;
671 td->td_retval[0] = tm;
672 return 0;
673 }
674 #endif /*!__alpha__*/
675
676 struct l_times_argv {
677 l_long tms_utime;
678 l_long tms_stime;
679 l_long tms_cutime;
680 l_long tms_cstime;
681 };
682
683 #ifdef __alpha__
684 #define CLK_TCK 1024 /* Linux uses 1024 on alpha */
685 #else
686 #define CLK_TCK 100 /* Linux uses 100 */
687 #endif
688
689 #define CONVTCK(r) (r.tv_sec * CLK_TCK + r.tv_usec / (1000000 / CLK_TCK))
690
691 int
692 linux_times(struct thread *td, struct linux_times_args *args)
693 {
694 struct timeval tv;
695 struct l_times_argv tms;
696 struct rusage ru;
697 int error;
698
699 #ifdef DEBUG
700 if (ldebug(times))
701 printf(ARGS(times, "*"));
702 #endif
703
704 mtx_lock_spin(&sched_lock);
705 calcru(td->td_proc, &ru.ru_utime, &ru.ru_stime, NULL);
706 mtx_unlock_spin(&sched_lock);
707
708 tms.tms_utime = CONVTCK(ru.ru_utime);
709 tms.tms_stime = CONVTCK(ru.ru_stime);
710
711 tms.tms_cutime = CONVTCK(td->td_proc->p_stats->p_cru.ru_utime);
712 tms.tms_cstime = CONVTCK(td->td_proc->p_stats->p_cru.ru_stime);
713
714 if ((error = copyout(&tms, args->buf, sizeof(tms))))
715 return error;
716
717 microuptime(&tv);
718 td->td_retval[0] = (int)CONVTCK(tv);
719 return 0;
720 }
721
722 int
723 linux_newuname(struct thread *td, struct linux_newuname_args *args)
724 {
725 struct l_new_utsname utsname;
726 char osname[LINUX_MAX_UTSNAME];
727 char osrelease[LINUX_MAX_UTSNAME];
728 char *p;
729
730 #ifdef DEBUG
731 if (ldebug(newuname))
732 printf(ARGS(newuname, "*"));
733 #endif
734
735 linux_get_osname(td, osname);
736 linux_get_osrelease(td, osrelease);
737
738 bzero(&utsname, sizeof(utsname));
739 strlcpy(utsname.sysname, osname, LINUX_MAX_UTSNAME);
740 getcredhostname(td->td_ucred, utsname.nodename, LINUX_MAX_UTSNAME);
741 strlcpy(utsname.release, osrelease, LINUX_MAX_UTSNAME);
742 strlcpy(utsname.version, version, LINUX_MAX_UTSNAME);
743 for (p = utsname.version; *p != '\0'; ++p)
744 if (*p == '\n') {
745 *p = '\0';
746 break;
747 }
748 #ifdef __i386__
749 {
750 const char *class;
751 switch (cpu_class) {
752 case CPUCLASS_686:
753 class = "i686";
754 break;
755 case CPUCLASS_586:
756 class = "i586";
757 break;
758 case CPUCLASS_486:
759 class = "i486";
760 break;
761 default:
762 class = "i386";
763 }
764 strlcpy(utsname.machine, class, LINUX_MAX_UTSNAME);
765 }
766 #elif defined(__amd64__) /* XXX: Linux can change 'personality'. */
767 #ifdef COMPAT_LINUX32
768 strlcpy(utsname.machine, "i686", LINUX_MAX_UTSNAME);
769 #else
770 strlcpy(utsname.machine, "x86_64", LINUX_MAX_UTSNAME);
771 #endif /* COMPAT_LINUX32 */
772 #else /* something other than i386 or amd64 - assume we and Linux agree */
773 strlcpy(utsname.machine, machine, LINUX_MAX_UTSNAME);
774 #endif /* __i386__ */
775 strlcpy(utsname.domainname, domainname, LINUX_MAX_UTSNAME);
776
777 return (copyout(&utsname, args->buf, sizeof(utsname)));
778 }
779
780 #if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
781 struct l_utimbuf {
782 l_time_t l_actime;
783 l_time_t l_modtime;
784 };
785
786 int
787 linux_utime(struct thread *td, struct linux_utime_args *args)
788 {
789 struct timeval tv[2], *tvp;
790 struct l_utimbuf lut;
791 char *fname;
792 int error;
793
794 LCONVPATHEXIST(td, args->fname, &fname);
795
796 #ifdef DEBUG
797 if (ldebug(utime))
798 printf(ARGS(utime, "%s, *"), fname);
799 #endif
800
801 if (args->times) {
802 if ((error = copyin(args->times, &lut, sizeof lut))) {
803 LFREEPATH(fname);
804 return error;
805 }
806 tv[0].tv_sec = lut.l_actime;
807 tv[0].tv_usec = 0;
808 tv[1].tv_sec = lut.l_modtime;
809 tv[1].tv_usec = 0;
810 tvp = tv;
811 } else
812 tvp = NULL;
813
814 error = kern_utimes(td, fname, UIO_SYSSPACE, tvp, UIO_SYSSPACE);
815 LFREEPATH(fname);
816 return (error);
817 }
818 #endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
819
820 #define __WCLONE 0x80000000
821
822 #ifndef __alpha__
823 int
824 linux_waitpid(struct thread *td, struct linux_waitpid_args *args)
825 {
826 int error, options, tmpstat;
827
828 #ifdef DEBUG
829 if (ldebug(waitpid))
830 printf(ARGS(waitpid, "%d, %p, %d"),
831 args->pid, (void *)args->status, args->options);
832 #endif
833
834 options = (args->options & (WNOHANG | WUNTRACED));
835 /* WLINUXCLONE should be equal to __WCLONE, but we make sure */
836 if (args->options & __WCLONE)
837 options |= WLINUXCLONE;
838
839 error = kern_wait(td, args->pid, &tmpstat, options, NULL);
840 if (error)
841 return error;
842
843 if (args->status) {
844 tmpstat &= 0xffff;
845 if (WIFSIGNALED(tmpstat))
846 tmpstat = (tmpstat & 0xffffff80) |
847 BSD_TO_LINUX_SIGNAL(WTERMSIG(tmpstat));
848 else if (WIFSTOPPED(tmpstat))
849 tmpstat = (tmpstat & 0xffff00ff) |
850 (BSD_TO_LINUX_SIGNAL(WSTOPSIG(tmpstat)) << 8);
851 return copyout(&tmpstat, args->status, sizeof(int));
852 }
853
854 return 0;
855 }
856 #endif /*!__alpha__*/
857
858 int
859 linux_wait4(struct thread *td, struct linux_wait4_args *args)
860 {
861 int error, options, tmpstat;
862 struct rusage ru;
863 struct proc *p;
864
865 #ifdef DEBUG
866 if (ldebug(wait4))
867 printf(ARGS(wait4, "%d, %p, %d, %p"),
868 args->pid, (void *)args->status, args->options,
869 (void *)args->rusage);
870 #endif
871
872 options = (args->options & (WNOHANG | WUNTRACED));
873 /* WLINUXCLONE should be equal to __WCLONE, but we make sure */
874 if (args->options & __WCLONE)
875 options |= WLINUXCLONE;
876
877 error = kern_wait(td, args->pid, &tmpstat, options, &ru);
878 if (error)
879 return error;
880
881 p = td->td_proc;
882 PROC_LOCK(p);
883 SIGDELSET(p->p_siglist, SIGCHLD);
884 PROC_UNLOCK(p);
885
886 if (args->status) {
887 tmpstat &= 0xffff;
888 if (WIFSIGNALED(tmpstat))
889 tmpstat = (tmpstat & 0xffffff80) |
890 BSD_TO_LINUX_SIGNAL(WTERMSIG(tmpstat));
891 else if (WIFSTOPPED(tmpstat))
892 tmpstat = (tmpstat & 0xffff00ff) |
893 (BSD_TO_LINUX_SIGNAL(WSTOPSIG(tmpstat)) << 8);
894 error = copyout(&tmpstat, args->status, sizeof(int));
895 }
896 if (args->rusage != NULL && error == 0)
897 error = copyout(&ru, args->rusage, sizeof(ru));
898
899 return (error);
900 }
901
902 int
903 linux_mknod(struct thread *td, struct linux_mknod_args *args)
904 {
905 char *path;
906 int error;
907
908 LCONVPATHCREAT(td, args->path, &path);
909
910 #ifdef DEBUG
911 if (ldebug(mknod))
912 printf(ARGS(mknod, "%s, %d, %d"), path, args->mode, args->dev);
913 #endif
914
915 if (args->mode & S_IFIFO)
916 error = kern_mkfifo(td, path, UIO_SYSSPACE, args->mode);
917 else
918 error = kern_mknod(td, path, UIO_SYSSPACE, args->mode,
919 args->dev);
920 LFREEPATH(path);
921 return (error);
922 }
923
924 /*
925 * UGH! This is just about the dumbest idea I've ever heard!!
926 */
927 int
928 linux_personality(struct thread *td, struct linux_personality_args *args)
929 {
930 #ifdef DEBUG
931 if (ldebug(personality))
932 printf(ARGS(personality, "%lu"), (unsigned long)args->per);
933 #endif
934 #ifndef __alpha__
935 if (args->per != 0)
936 return EINVAL;
937 #endif
938
939 /* Yes Jim, it's still a Linux... */
940 td->td_retval[0] = 0;
941 return 0;
942 }
943
944 struct l_itimerval {
945 l_timeval it_interval;
946 l_timeval it_value;
947 };
948
949 int
950 linux_setitimer(struct thread *td, struct linux_setitimer_args *uap)
951 {
952 int error;
953 caddr_t sg;
954 struct l_itimerval *lp, *lop, ls;
955 struct itimerval *p = NULL, *op = NULL, s;
956
957 #ifdef DEBUG
958 if (ldebug(setitimer))
959 printf(ARGS(setitimer, "%p, %p"),
960 (void *)uap->itv, (void *)uap->oitv);
961 #endif
962 lp = uap->itv;
963 if (lp != NULL) {
964 sg = stackgap_init();
965 p = stackgap_alloc(&sg, sizeof(struct itimerval));
966 uap->itv = (struct l_itimerval *)p;
967 error = copyin(lp, &ls, sizeof(ls));
968 if (error != 0)
969 return (error);
970 s.it_interval.tv_sec = ls.it_interval.tv_sec;
971 s.it_interval.tv_usec = ls.it_interval.tv_usec;
972 s.it_value.tv_sec = ls.it_value.tv_sec;
973 s.it_value.tv_usec = ls.it_value.tv_usec;
974 error = copyout(&s, p, sizeof(s));
975 if (error != 0)
976 return (error);
977 #ifdef DEBUG
978 if (ldebug(setitimer)) {
979 printf("setitimer: value: sec: %ld, usec: %ld\n",
980 s.it_value.tv_sec, s.it_value.tv_usec);
981 printf("setitimer: interval: sec: %ld, usec: %ld\n",
982 s.it_interval.tv_sec, s.it_interval.tv_usec);
983 }
984 #endif
985 }
986 lop = uap->oitv;
987 if (lop != NULL) {
988 sg = stackgap_init();
989 op = stackgap_alloc(&sg, sizeof(struct itimerval));
990 uap->oitv = (struct l_itimerval *)op;
991 }
992 error = setitimer(td, (struct setitimer_args *) uap);
993 if (error != 0)
994 return (error);
995 if (lop != NULL) {
996 error = copyin(op, &s, sizeof(s));
997 if (error != 0)
998 return (error);
999 ls.it_interval.tv_sec = s.it_interval.tv_sec;
1000 ls.it_interval.tv_usec = s.it_interval.tv_usec;
1001 ls.it_value.tv_sec = s.it_value.tv_sec;
1002 ls.it_value.tv_usec = s.it_value.tv_usec;
1003 error = copyout(&ls, lop, sizeof(ls));
1004 }
1005 return (error);
1006 }
1007
1008 int
1009 linux_getitimer(struct thread *td, struct linux_getitimer_args *uap)
1010 {
1011 int error;
1012 caddr_t sg;
1013 struct l_itimerval *lp, ls;
1014 struct itimerval *p = NULL, s;
1015
1016 #ifdef DEBUG
1017 if (ldebug(getitimer))
1018 printf(ARGS(getitimer, "%p"), (void *)uap->itv);
1019 #endif
1020 lp = uap->itv;
1021 if (lp != NULL) {
1022 sg = stackgap_init();
1023 p = stackgap_alloc(&sg, sizeof(struct itimerval));
1024 uap->itv = (struct l_itimerval *)p;
1025 }
1026 error = getitimer(td, (struct getitimer_args *) uap);
1027 if (error != 0)
1028 return (error);
1029 if (lp != NULL) {
1030 error = copyin(p, &s, sizeof(s));
1031 if (error != 0)
1032 return (error);
1033 ls.it_interval.tv_sec = s.it_interval.tv_sec;
1034 ls.it_interval.tv_usec = s.it_interval.tv_usec;
1035 ls.it_value.tv_sec = s.it_value.tv_sec;
1036 ls.it_value.tv_usec = s.it_value.tv_usec;
1037 error = copyout(&ls, lp, sizeof(ls));
1038 }
1039 return (error);
1040 }
1041
1042 #ifndef __alpha__
1043 int
1044 linux_nice(struct thread *td, struct linux_nice_args *args)
1045 {
1046 struct setpriority_args bsd_args;
1047
1048 bsd_args.which = PRIO_PROCESS;
1049 bsd_args.who = 0; /* current process */
1050 bsd_args.prio = args->inc;
1051 return setpriority(td, &bsd_args);
1052 }
1053 #endif /*!__alpha__*/
1054
1055 int
1056 linux_setgroups(struct thread *td, struct linux_setgroups_args *args)
1057 {
1058 struct ucred *newcred, *oldcred;
1059 l_gid_t linux_gidset[NGROUPS];
1060 gid_t *bsd_gidset;
1061 int ngrp, error;
1062 struct proc *p;
1063
1064 ngrp = args->gidsetsize;
1065 if (ngrp < 0 || ngrp >= NGROUPS)
1066 return (EINVAL);
1067 error = copyin(args->grouplist, linux_gidset, ngrp * sizeof(l_gid_t));
1068 if (error)
1069 return (error);
1070 newcred = crget();
1071 p = td->td_proc;
1072 PROC_LOCK(p);
1073 oldcred = p->p_ucred;
1074
1075 /*
1076 * cr_groups[0] holds egid. Setting the whole set from
1077 * the supplied set will cause egid to be changed too.
1078 * Keep cr_groups[0] unchanged to prevent that.
1079 */
1080
1081 if ((error = suser_cred(oldcred, SUSER_ALLOWJAIL)) != 0) {
1082 PROC_UNLOCK(p);
1083 crfree(newcred);
1084 return (error);
1085 }
1086
1087 crcopy(newcred, oldcred);
1088 if (ngrp > 0) {
1089 newcred->cr_ngroups = ngrp + 1;
1090
1091 bsd_gidset = newcred->cr_groups;
1092 ngrp--;
1093 while (ngrp >= 0) {
1094 bsd_gidset[ngrp + 1] = linux_gidset[ngrp];
1095 ngrp--;
1096 }
1097 }
1098 else
1099 newcred->cr_ngroups = 1;
1100
1101 setsugid(p);
1102 p->p_ucred = newcred;
1103 PROC_UNLOCK(p);
1104 crfree(oldcred);
1105 return (0);
1106 }
1107
1108 int
1109 linux_getgroups(struct thread *td, struct linux_getgroups_args *args)
1110 {
1111 struct ucred *cred;
1112 l_gid_t linux_gidset[NGROUPS];
1113 gid_t *bsd_gidset;
1114 int bsd_gidsetsz, ngrp, error;
1115
1116 cred = td->td_ucred;
1117 bsd_gidset = cred->cr_groups;
1118 bsd_gidsetsz = cred->cr_ngroups - 1;
1119
1120 /*
1121 * cr_groups[0] holds egid. Returning the whole set
1122 * here will cause a duplicate. Exclude cr_groups[0]
1123 * to prevent that.
1124 */
1125
1126 if ((ngrp = args->gidsetsize) == 0) {
1127 td->td_retval[0] = bsd_gidsetsz;
1128 return (0);
1129 }
1130
1131 if (ngrp < bsd_gidsetsz)
1132 return (EINVAL);
1133
1134 ngrp = 0;
1135 while (ngrp < bsd_gidsetsz) {
1136 linux_gidset[ngrp] = bsd_gidset[ngrp + 1];
1137 ngrp++;
1138 }
1139
1140 if ((error = copyout(linux_gidset, args->grouplist,
1141 ngrp * sizeof(l_gid_t))))
1142 return (error);
1143
1144 td->td_retval[0] = ngrp;
1145 return (0);
1146 }
1147
1148 #ifndef __alpha__
1149 int
1150 linux_setrlimit(struct thread *td, struct linux_setrlimit_args *args)
1151 {
1152 struct rlimit bsd_rlim;
1153 struct l_rlimit rlim;
1154 u_int which;
1155 int error;
1156
1157 #ifdef DEBUG
1158 if (ldebug(setrlimit))
1159 printf(ARGS(setrlimit, "%d, %p"),
1160 args->resource, (void *)args->rlim);
1161 #endif
1162
1163 if (args->resource >= LINUX_RLIM_NLIMITS)
1164 return (EINVAL);
1165
1166 which = linux_to_bsd_resource[args->resource];
1167 if (which == -1)
1168 return (EINVAL);
1169
1170 error = copyin(args->rlim, &rlim, sizeof(rlim));
1171 if (error)
1172 return (error);
1173
1174 bsd_rlim.rlim_cur = (rlim_t)rlim.rlim_cur;
1175 bsd_rlim.rlim_max = (rlim_t)rlim.rlim_max;
1176 return (kern_setrlimit(td, which, &bsd_rlim));
1177 }
1178
1179 int
1180 linux_old_getrlimit(struct thread *td, struct linux_old_getrlimit_args *args)
1181 {
1182 struct l_rlimit rlim;
1183 struct proc *p = td->td_proc;
1184 struct rlimit bsd_rlim;
1185 u_int which;
1186
1187 #ifdef DEBUG
1188 if (ldebug(old_getrlimit))
1189 printf(ARGS(old_getrlimit, "%d, %p"),
1190 args->resource, (void *)args->rlim);
1191 #endif
1192
1193 if (args->resource >= LINUX_RLIM_NLIMITS)
1194 return (EINVAL);
1195
1196 which = linux_to_bsd_resource[args->resource];
1197 if (which == -1)
1198 return (EINVAL);
1199
1200 PROC_LOCK(p);
1201 lim_rlimit(p, which, &bsd_rlim);
1202 PROC_UNLOCK(p);
1203
1204 #ifdef COMPAT_LINUX32
1205 rlim.rlim_cur = (unsigned int)bsd_rlim.rlim_cur;
1206 if (rlim.rlim_cur == UINT_MAX)
1207 rlim.rlim_cur = INT_MAX;
1208 rlim.rlim_max = (unsigned int)bsd_rlim.rlim_max;
1209 if (rlim.rlim_max == UINT_MAX)
1210 rlim.rlim_max = INT_MAX;
1211 #else
1212 rlim.rlim_cur = (unsigned long)bsd_rlim.rlim_cur;
1213 if (rlim.rlim_cur == ULONG_MAX)
1214 rlim.rlim_cur = LONG_MAX;
1215 rlim.rlim_max = (unsigned long)bsd_rlim.rlim_max;
1216 if (rlim.rlim_max == ULONG_MAX)
1217 rlim.rlim_max = LONG_MAX;
1218 #endif
1219 return (copyout(&rlim, args->rlim, sizeof(rlim)));
1220 }
1221
1222 int
1223 linux_getrlimit(struct thread *td, struct linux_getrlimit_args *args)
1224 {
1225 struct l_rlimit rlim;
1226 struct proc *p = td->td_proc;
1227 struct rlimit bsd_rlim;
1228 u_int which;
1229
1230 #ifdef DEBUG
1231 if (ldebug(getrlimit))
1232 printf(ARGS(getrlimit, "%d, %p"),
1233 args->resource, (void *)args->rlim);
1234 #endif
1235
1236 if (args->resource >= LINUX_RLIM_NLIMITS)
1237 return (EINVAL);
1238
1239 which = linux_to_bsd_resource[args->resource];
1240 if (which == -1)
1241 return (EINVAL);
1242
1243 PROC_LOCK(p);
1244 lim_rlimit(p, which, &bsd_rlim);
1245 PROC_UNLOCK(p);
1246
1247 rlim.rlim_cur = (l_ulong)bsd_rlim.rlim_cur;
1248 rlim.rlim_max = (l_ulong)bsd_rlim.rlim_max;
1249 return (copyout(&rlim, args->rlim, sizeof(rlim)));
1250 }
1251 #endif /*!__alpha__*/
1252
1253 int
1254 linux_sched_setscheduler(struct thread *td,
1255 struct linux_sched_setscheduler_args *args)
1256 {
1257 struct sched_setscheduler_args bsd;
1258
1259 #ifdef DEBUG
1260 if (ldebug(sched_setscheduler))
1261 printf(ARGS(sched_setscheduler, "%d, %d, %p"),
1262 args->pid, args->policy, (const void *)args->param);
1263 #endif
1264
1265 switch (args->policy) {
1266 case LINUX_SCHED_OTHER:
1267 bsd.policy = SCHED_OTHER;
1268 break;
1269 case LINUX_SCHED_FIFO:
1270 bsd.policy = SCHED_FIFO;
1271 break;
1272 case LINUX_SCHED_RR:
1273 bsd.policy = SCHED_RR;
1274 break;
1275 default:
1276 return EINVAL;
1277 }
1278
1279 bsd.pid = args->pid;
1280 bsd.param = (struct sched_param *)args->param;
1281 return sched_setscheduler(td, &bsd);
1282 }
1283
1284 int
1285 linux_sched_getscheduler(struct thread *td,
1286 struct linux_sched_getscheduler_args *args)
1287 {
1288 struct sched_getscheduler_args bsd;
1289 int error;
1290
1291 #ifdef DEBUG
1292 if (ldebug(sched_getscheduler))
1293 printf(ARGS(sched_getscheduler, "%d"), args->pid);
1294 #endif
1295
1296 bsd.pid = args->pid;
1297 error = sched_getscheduler(td, &bsd);
1298
1299 switch (td->td_retval[0]) {
1300 case SCHED_OTHER:
1301 td->td_retval[0] = LINUX_SCHED_OTHER;
1302 break;
1303 case SCHED_FIFO:
1304 td->td_retval[0] = LINUX_SCHED_FIFO;
1305 break;
1306 case SCHED_RR:
1307 td->td_retval[0] = LINUX_SCHED_RR;
1308 break;
1309 }
1310
1311 return error;
1312 }
1313
1314 int
1315 linux_sched_get_priority_max(struct thread *td,
1316 struct linux_sched_get_priority_max_args *args)
1317 {
1318 struct sched_get_priority_max_args bsd;
1319
1320 #ifdef DEBUG
1321 if (ldebug(sched_get_priority_max))
1322 printf(ARGS(sched_get_priority_max, "%d"), args->policy);
1323 #endif
1324
1325 switch (args->policy) {
1326 case LINUX_SCHED_OTHER:
1327 bsd.policy = SCHED_OTHER;
1328 break;
1329 case LINUX_SCHED_FIFO:
1330 bsd.policy = SCHED_FIFO;
1331 break;
1332 case LINUX_SCHED_RR:
1333 bsd.policy = SCHED_RR;
1334 break;
1335 default:
1336 return EINVAL;
1337 }
1338 return sched_get_priority_max(td, &bsd);
1339 }
1340
1341 int
1342 linux_sched_get_priority_min(struct thread *td,
1343 struct linux_sched_get_priority_min_args *args)
1344 {
1345 struct sched_get_priority_min_args bsd;
1346
1347 #ifdef DEBUG
1348 if (ldebug(sched_get_priority_min))
1349 printf(ARGS(sched_get_priority_min, "%d"), args->policy);
1350 #endif
1351
1352 switch (args->policy) {
1353 case LINUX_SCHED_OTHER:
1354 bsd.policy = SCHED_OTHER;
1355 break;
1356 case LINUX_SCHED_FIFO:
1357 bsd.policy = SCHED_FIFO;
1358 break;
1359 case LINUX_SCHED_RR:
1360 bsd.policy = SCHED_RR;
1361 break;
1362 default:
1363 return EINVAL;
1364 }
1365 return sched_get_priority_min(td, &bsd);
1366 }
1367
1368 #define REBOOT_CAD_ON 0x89abcdef
1369 #define REBOOT_CAD_OFF 0
1370 #define REBOOT_HALT 0xcdef0123
1371
1372 int
1373 linux_reboot(struct thread *td, struct linux_reboot_args *args)
1374 {
1375 struct reboot_args bsd_args;
1376
1377 #ifdef DEBUG
1378 if (ldebug(reboot))
1379 printf(ARGS(reboot, "0x%x"), args->cmd);
1380 #endif
1381 if (args->cmd == REBOOT_CAD_ON || args->cmd == REBOOT_CAD_OFF)
1382 return (0);
1383 bsd_args.opt = (args->cmd == REBOOT_HALT) ? RB_HALT : 0;
1384 return (reboot(td, &bsd_args));
1385 }
1386
1387 #ifndef __alpha__
1388
1389 /*
1390 * The FreeBSD native getpid(2), getgid(2) and getuid(2) also modify
1391 * td->td_retval[1] when COMPAT_43 is defined. This
1392 * globbers registers that are assumed to be preserved. The following
1393 * lightweight syscalls fixes this. See also linux_getgid16() and
1394 * linux_getuid16() in linux_uid16.c.
1395 *
1396 * linux_getpid() - MP SAFE
1397 * linux_getgid() - MP SAFE
1398 * linux_getuid() - MP SAFE
1399 */
1400
1401 int
1402 linux_getpid(struct thread *td, struct linux_getpid_args *args)
1403 {
1404
1405 td->td_retval[0] = td->td_proc->p_pid;
1406 return (0);
1407 }
1408
1409 int
1410 linux_getgid(struct thread *td, struct linux_getgid_args *args)
1411 {
1412
1413 td->td_retval[0] = td->td_ucred->cr_rgid;
1414 return (0);
1415 }
1416
1417 int
1418 linux_getuid(struct thread *td, struct linux_getuid_args *args)
1419 {
1420
1421 td->td_retval[0] = td->td_ucred->cr_ruid;
1422 return (0);
1423 }
1424
1425 #endif /*!__alpha__*/
1426
1427 int
1428 linux_getsid(struct thread *td, struct linux_getsid_args *args)
1429 {
1430 struct getsid_args bsd;
1431 bsd.pid = args->pid;
1432 return getsid(td, &bsd);
1433 }
1434
1435 int
1436 linux_nosys(struct thread *td, struct nosys_args *ignore)
1437 {
1438
1439 return (ENOSYS);
1440 }
Cache object: e52cd956b229a3b43d3a022ad98069c4
|