1/*-
2 * Copyright (c) 2004 Tim J. Robbins
3 * Copyright (c) 2002 Doug Rabson
4 * Copyright (c) 2000 Marcel Moolenaar
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer
12 * in this position and unchanged.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. The name of the author may not be used to endorse or promote products
17 * derived from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#include <sys/cdefs.h>
| 1/*-
2 * Copyright (c) 2004 Tim J. Robbins
3 * Copyright (c) 2002 Doug Rabson
4 * Copyright (c) 2000 Marcel Moolenaar
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer
12 * in this position and unchanged.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. The name of the author may not be used to endorse or promote products
17 * derived from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#include <sys/cdefs.h>
|
32__FBSDID("$FreeBSD: head/sys/amd64/linux32/linux32_machdep.c 166731 2007-02-15 01:20:43Z jkim $");
| 32__FBSDID("$FreeBSD: head/sys/amd64/linux32/linux32_machdep.c 166944 2007-02-24 16:49:25Z netchild $");
|
33
34#include <sys/param.h>
35#include <sys/kernel.h>
36#include <sys/systm.h>
37#include <sys/file.h>
38#include <sys/fcntl.h>
39#include <sys/clock.h>
40#include <sys/imgact.h>
41#include <sys/limits.h>
42#include <sys/lock.h>
43#include <sys/malloc.h>
44#include <sys/mman.h>
45#include <sys/mutex.h>
46#include <sys/priv.h>
47#include <sys/proc.h>
48#include <sys/resource.h>
49#include <sys/resourcevar.h>
50#include <sys/sched.h>
51#include <sys/syscallsubr.h>
52#include <sys/sysproto.h>
53#include <sys/unistd.h>
54
55#include <machine/frame.h>
56#include <machine/psl.h>
57
58#include <vm/vm.h>
59#include <vm/pmap.h>
60#include <vm/vm_extern.h>
61#include <vm/vm_kern.h>
62#include <vm/vm_map.h>
63
64#include <amd64/linux32/linux.h>
65#include <amd64/linux32/linux32_proto.h>
66#include <compat/linux/linux_ipc.h>
67#include <compat/linux/linux_signal.h>
68#include <compat/linux/linux_util.h>
69#include <compat/linux/linux_emul.h>
70
71struct l_old_select_argv {
72 l_int nfds;
73 l_uintptr_t readfds;
74 l_uintptr_t writefds;
75 l_uintptr_t exceptfds;
76 l_uintptr_t timeout;
77} __packed;
78
79int
80linux_to_bsd_sigaltstack(int lsa)
81{
82 int bsa = 0;
83
84 if (lsa & LINUX_SS_DISABLE)
85 bsa |= SS_DISABLE;
86 if (lsa & LINUX_SS_ONSTACK)
87 bsa |= SS_ONSTACK;
88 return (bsa);
89}
90
91int
92bsd_to_linux_sigaltstack(int bsa)
93{
94 int lsa = 0;
95
96 if (bsa & SS_DISABLE)
97 lsa |= LINUX_SS_DISABLE;
98 if (bsa & SS_ONSTACK)
99 lsa |= LINUX_SS_ONSTACK;
100 return (lsa);
101}
102
103/*
104 * Custom version of exec_copyin_args() so that we can translate
105 * the pointers.
106 */
107static int
108linux_exec_copyin_args(struct image_args *args, char *fname,
109 enum uio_seg segflg, char **argv, char **envv)
110{
111 char *argp, *envp;
112 u_int32_t *p32, arg;
113 size_t length;
114 int error;
115
116 bzero(args, sizeof(*args));
117 if (argv == NULL)
118 return (EFAULT);
119
120 /*
121 * Allocate temporary demand zeroed space for argument and
122 * environment strings
123 */
124 args->buf = (char *) kmem_alloc_wait(exec_map,
125 PATH_MAX + ARG_MAX + MAXSHELLCMDLEN);
126 if (args->buf == NULL)
127 return (ENOMEM);
128 args->begin_argv = args->buf;
129 args->endp = args->begin_argv;
130 args->stringspace = ARG_MAX;
131
132 args->fname = args->buf + ARG_MAX;
133
134 /*
135 * Copy the file name.
136 */
137 error = (segflg == UIO_SYSSPACE) ?
138 copystr(fname, args->fname, PATH_MAX, &length) :
139 copyinstr(fname, args->fname, PATH_MAX, &length);
140 if (error != 0)
141 goto err_exit;
142
143 /*
144 * extract arguments first
145 */
146 p32 = (u_int32_t *)argv;
147 for (;;) {
148 error = copyin(p32++, &arg, sizeof(arg));
149 if (error)
150 goto err_exit;
151 if (arg == 0)
152 break;
153 argp = PTRIN(arg);
154 error = copyinstr(argp, args->endp, args->stringspace, &length);
155 if (error) {
156 if (error == ENAMETOOLONG)
157 error = E2BIG;
158
159 goto err_exit;
160 }
161 args->stringspace -= length;
162 args->endp += length;
163 args->argc++;
164 }
165
166 args->begin_envv = args->endp;
167
168 /*
169 * extract environment strings
170 */
171 if (envv) {
172 p32 = (u_int32_t *)envv;
173 for (;;) {
174 error = copyin(p32++, &arg, sizeof(arg));
175 if (error)
176 goto err_exit;
177 if (arg == 0)
178 break;
179 envp = PTRIN(arg);
180 error = copyinstr(envp, args->endp, args->stringspace,
181 &length);
182 if (error) {
183 if (error == ENAMETOOLONG)
184 error = E2BIG;
185 goto err_exit;
186 }
187 args->stringspace -= length;
188 args->endp += length;
189 args->envc++;
190 }
191 }
192
193 return (0);
194
195err_exit:
196 kmem_free_wakeup(exec_map, (vm_offset_t)args->buf,
197 PATH_MAX + ARG_MAX + MAXSHELLCMDLEN);
198 args->buf = NULL;
199 return (error);
200}
201
202int
203linux_execve(struct thread *td, struct linux_execve_args *args)
204{
205 struct image_args eargs;
206 char *path;
207 int error;
208
209 LCONVPATHEXIST(td, args->path, &path);
210
211#ifdef DEBUG
212 if (ldebug(execve))
213 printf(ARGS(execve, "%s"), path);
214#endif
215
216 error = linux_exec_copyin_args(&eargs, path, UIO_SYSSPACE, args->argp,
217 args->envp);
218 free(path, M_TEMP);
219 if (error == 0)
220 error = kern_execve(td, &eargs, NULL);
221 if (error == 0)
222 /* linux process can exec fbsd one, dont attempt
223 * to create emuldata for such process using
224 * linux_proc_init, this leads to a panic on KASSERT
225 * because such process has p->p_emuldata == NULL
226 */
227 if (td->td_proc->p_sysent == &elf_linux_sysvec)
228 error = linux_proc_init(td, 0, 0);
229 return (error);
230}
231
232struct iovec32 {
233 u_int32_t iov_base;
234 int iov_len;
235};
236
237CTASSERT(sizeof(struct iovec32) == 8);
238
239static int
240linux32_copyinuio(struct iovec32 *iovp, u_int iovcnt, struct uio **uiop)
241{
242 struct iovec32 iov32;
243 struct iovec *iov;
244 struct uio *uio;
245 u_int iovlen;
246 int error, i;
247
248 *uiop = NULL;
249 if (iovcnt > UIO_MAXIOV)
250 return (EINVAL);
251 iovlen = iovcnt * sizeof(struct iovec);
252 uio = malloc(iovlen + sizeof *uio, M_IOV, M_WAITOK);
253 iov = (struct iovec *)(uio + 1);
254 for (i = 0; i < iovcnt; i++) {
255 error = copyin(&iovp[i], &iov32, sizeof(struct iovec32));
256 if (error) {
257 free(uio, M_IOV);
258 return (error);
259 }
260 iov[i].iov_base = PTRIN(iov32.iov_base);
261 iov[i].iov_len = iov32.iov_len;
262 }
263 uio->uio_iov = iov;
264 uio->uio_iovcnt = iovcnt;
265 uio->uio_segflg = UIO_USERSPACE;
266 uio->uio_offset = -1;
267 uio->uio_resid = 0;
268 for (i = 0; i < iovcnt; i++) {
269 if (iov->iov_len > INT_MAX - uio->uio_resid) {
270 free(uio, M_IOV);
271 return (EINVAL);
272 }
273 uio->uio_resid += iov->iov_len;
274 iov++;
275 }
276 *uiop = uio;
277 return (0);
278}
279
280int
281linux_readv(struct thread *td, struct linux_readv_args *uap)
282{
283 struct uio *auio;
284 int error;
285
286 error = linux32_copyinuio(uap->iovp, uap->iovcnt, &auio);
287 if (error)
288 return (error);
289 error = kern_readv(td, uap->fd, auio);
290 free(auio, M_IOV);
291 return (error);
292}
293
294int
295linux_writev(struct thread *td, struct linux_writev_args *uap)
296{
297 struct uio *auio;
298 int error;
299
300 error = linux32_copyinuio(uap->iovp, uap->iovcnt, &auio);
301 if (error)
302 return (error);
303 error = kern_writev(td, uap->fd, auio);
304 free(auio, M_IOV);
305 return (error);
306}
307
308struct l_ipc_kludge {
309 l_uintptr_t msgp;
310 l_long msgtyp;
311} __packed;
312
313int
314linux_ipc(struct thread *td, struct linux_ipc_args *args)
315{
316
317 switch (args->what & 0xFFFF) {
318 case LINUX_SEMOP: {
319 struct linux_semop_args a;
320
321 a.semid = args->arg1;
322 a.tsops = args->ptr;
323 a.nsops = args->arg2;
324 return (linux_semop(td, &a));
325 }
326 case LINUX_SEMGET: {
327 struct linux_semget_args a;
328
329 a.key = args->arg1;
330 a.nsems = args->arg2;
331 a.semflg = args->arg3;
332 return (linux_semget(td, &a));
333 }
334 case LINUX_SEMCTL: {
335 struct linux_semctl_args a;
336 int error;
337
338 a.semid = args->arg1;
339 a.semnum = args->arg2;
340 a.cmd = args->arg3;
341 error = copyin(args->ptr, &a.arg, sizeof(a.arg));
342 if (error)
343 return (error);
344 return (linux_semctl(td, &a));
345 }
346 case LINUX_MSGSND: {
347 struct linux_msgsnd_args a;
348
349 a.msqid = args->arg1;
350 a.msgp = args->ptr;
351 a.msgsz = args->arg2;
352 a.msgflg = args->arg3;
353 return (linux_msgsnd(td, &a));
354 }
355 case LINUX_MSGRCV: {
356 struct linux_msgrcv_args a;
357
358 a.msqid = args->arg1;
359 a.msgsz = args->arg2;
360 a.msgflg = args->arg3;
361 if ((args->what >> 16) == 0) {
362 struct l_ipc_kludge tmp;
363 int error;
364
365 if (args->ptr == 0)
366 return (EINVAL);
367 error = copyin(args->ptr, &tmp, sizeof(tmp));
368 if (error)
369 return (error);
370 a.msgp = PTRIN(tmp.msgp);
371 a.msgtyp = tmp.msgtyp;
372 } else {
373 a.msgp = args->ptr;
374 a.msgtyp = args->arg5;
375 }
376 return (linux_msgrcv(td, &a));
377 }
378 case LINUX_MSGGET: {
379 struct linux_msgget_args a;
380
381 a.key = args->arg1;
382 a.msgflg = args->arg2;
383 return (linux_msgget(td, &a));
384 }
385 case LINUX_MSGCTL: {
386 struct linux_msgctl_args a;
387
388 a.msqid = args->arg1;
389 a.cmd = args->arg2;
390 a.buf = args->ptr;
391 return (linux_msgctl(td, &a));
392 }
393 case LINUX_SHMAT: {
394 struct linux_shmat_args a;
395
396 a.shmid = args->arg1;
397 a.shmaddr = args->ptr;
398 a.shmflg = args->arg2;
399 a.raddr = PTRIN((l_uint)args->arg3);
400 return (linux_shmat(td, &a));
401 }
402 case LINUX_SHMDT: {
403 struct linux_shmdt_args a;
404
405 a.shmaddr = args->ptr;
406 return (linux_shmdt(td, &a));
407 }
408 case LINUX_SHMGET: {
409 struct linux_shmget_args a;
410
411 a.key = args->arg1;
412 a.size = args->arg2;
413 a.shmflg = args->arg3;
414 return (linux_shmget(td, &a));
415 }
416 case LINUX_SHMCTL: {
417 struct linux_shmctl_args a;
418
419 a.shmid = args->arg1;
420 a.cmd = args->arg2;
421 a.buf = args->ptr;
422 return (linux_shmctl(td, &a));
423 }
424 default:
425 break;
426 }
427
428 return (EINVAL);
429}
430
431int
432linux_old_select(struct thread *td, struct linux_old_select_args *args)
433{
434 struct l_old_select_argv linux_args;
435 struct linux_select_args newsel;
436 int error;
437
438#ifdef DEBUG
439 if (ldebug(old_select))
440 printf(ARGS(old_select, "%p"), args->ptr);
441#endif
442
443 error = copyin(args->ptr, &linux_args, sizeof(linux_args));
444 if (error)
445 return (error);
446
447 newsel.nfds = linux_args.nfds;
448 newsel.readfds = PTRIN(linux_args.readfds);
449 newsel.writefds = PTRIN(linux_args.writefds);
450 newsel.exceptfds = PTRIN(linux_args.exceptfds);
451 newsel.timeout = PTRIN(linux_args.timeout);
452 return (linux_select(td, &newsel));
453}
454
455int
456linux_fork(struct thread *td, struct linux_fork_args *args)
457{
458 int error;
459 struct proc *p2;
460 struct thread *td2;
461
462#ifdef DEBUG
463 if (ldebug(fork))
464 printf(ARGS(fork, ""));
465#endif
466
467 if ((error = fork1(td, RFFDG | RFPROC | RFSTOPPED, 0, &p2)) != 0)
468 return (error);
469
470 if (error == 0) {
471 td->td_retval[0] = p2->p_pid;
472 td->td_retval[1] = 0;
473 }
474
475 if (td->td_retval[1] == 1)
476 td->td_retval[0] = 0;
477 error = linux_proc_init(td, td->td_retval[0], 0);
478 if (error)
479 return (error);
480
481 td2 = FIRST_THREAD_IN_PROC(p2);
482
483 /* make it run */
484 mtx_lock_spin(&sched_lock);
485 TD_SET_CAN_RUN(td2);
486 sched_add(td2, SRQ_BORING);
487 mtx_unlock_spin(&sched_lock);
488
489 return (0);
490}
491
492int
493linux_vfork(struct thread *td, struct linux_vfork_args *args)
494{
495 int error;
496 struct proc *p2;
497 struct thread *td2;
498
499#ifdef DEBUG
500 if (ldebug(vfork))
501 printf(ARGS(vfork, ""));
502#endif
503
504 /* exclude RFPPWAIT */
505 if ((error = fork1(td, RFFDG | RFPROC | RFMEM | RFSTOPPED, 0, &p2)) != 0)
506 return (error);
507 if (error == 0) {
508 td->td_retval[0] = p2->p_pid;
509 td->td_retval[1] = 0;
510 }
511 /* Are we the child? */
512 if (td->td_retval[1] == 1)
513 td->td_retval[0] = 0;
514 error = linux_proc_init(td, td->td_retval[0], 0);
515 if (error)
516 return (error);
517
518 PROC_LOCK(p2);
519 p2->p_flag |= P_PPWAIT;
520 PROC_UNLOCK(p2);
521
522 td2 = FIRST_THREAD_IN_PROC(p2);
523
524 /* make it run */
525 mtx_lock_spin(&sched_lock);
526 TD_SET_CAN_RUN(td2);
527 sched_add(td2, SRQ_BORING);
528 mtx_unlock_spin(&sched_lock);
529
530 /* wait for the children to exit, ie. emulate vfork */
531 PROC_LOCK(p2);
532 while (p2->p_flag & P_PPWAIT)
533 msleep(td->td_proc, &p2->p_mtx, PWAIT, "ppwait", 0);
534 PROC_UNLOCK(p2);
535
536 return (0);
537}
538
539int
540linux_clone(struct thread *td, struct linux_clone_args *args)
541{
542 int error, ff = RFPROC | RFSTOPPED;
543 struct proc *p2;
544 struct thread *td2;
545 int exit_signal;
546 struct linux_emuldata *em;
547
548#ifdef DEBUG
549 if (ldebug(clone)) {
550 printf(ARGS(clone, "flags %x, stack %x, parent tid: %x, child tid: %x"),
551 (unsigned int)args->flags, (unsigned int)(uintptr_t)args->stack,
552 (unsigned int)(uintptr_t)args->parent_tidptr,
553 (unsigned int)(uintptr_t)args->child_tidptr);
554 }
555#endif
556
557 exit_signal = args->flags & 0x000000ff;
558 if (!LINUX_SIG_VALID(exit_signal) && exit_signal != 0)
559 return (EINVAL);
560
561 if (exit_signal <= LINUX_SIGTBLSZ)
562 exit_signal = linux_to_bsd_signal[_SIG_IDX(exit_signal)];
563
564 if (args->flags & CLONE_VM)
565 ff |= RFMEM;
566 if (args->flags & CLONE_SIGHAND)
567 ff |= RFSIGSHARE;
568 /*
569 * XXX: in linux sharing of fs info (chroot/cwd/umask)
570 * and open files is independant. in fbsd its in one
| 33
34#include <sys/param.h>
35#include <sys/kernel.h>
36#include <sys/systm.h>
37#include <sys/file.h>
38#include <sys/fcntl.h>
39#include <sys/clock.h>
40#include <sys/imgact.h>
41#include <sys/limits.h>
42#include <sys/lock.h>
43#include <sys/malloc.h>
44#include <sys/mman.h>
45#include <sys/mutex.h>
46#include <sys/priv.h>
47#include <sys/proc.h>
48#include <sys/resource.h>
49#include <sys/resourcevar.h>
50#include <sys/sched.h>
51#include <sys/syscallsubr.h>
52#include <sys/sysproto.h>
53#include <sys/unistd.h>
54
55#include <machine/frame.h>
56#include <machine/psl.h>
57
58#include <vm/vm.h>
59#include <vm/pmap.h>
60#include <vm/vm_extern.h>
61#include <vm/vm_kern.h>
62#include <vm/vm_map.h>
63
64#include <amd64/linux32/linux.h>
65#include <amd64/linux32/linux32_proto.h>
66#include <compat/linux/linux_ipc.h>
67#include <compat/linux/linux_signal.h>
68#include <compat/linux/linux_util.h>
69#include <compat/linux/linux_emul.h>
70
71struct l_old_select_argv {
72 l_int nfds;
73 l_uintptr_t readfds;
74 l_uintptr_t writefds;
75 l_uintptr_t exceptfds;
76 l_uintptr_t timeout;
77} __packed;
78
79int
80linux_to_bsd_sigaltstack(int lsa)
81{
82 int bsa = 0;
83
84 if (lsa & LINUX_SS_DISABLE)
85 bsa |= SS_DISABLE;
86 if (lsa & LINUX_SS_ONSTACK)
87 bsa |= SS_ONSTACK;
88 return (bsa);
89}
90
91int
92bsd_to_linux_sigaltstack(int bsa)
93{
94 int lsa = 0;
95
96 if (bsa & SS_DISABLE)
97 lsa |= LINUX_SS_DISABLE;
98 if (bsa & SS_ONSTACK)
99 lsa |= LINUX_SS_ONSTACK;
100 return (lsa);
101}
102
103/*
104 * Custom version of exec_copyin_args() so that we can translate
105 * the pointers.
106 */
107static int
108linux_exec_copyin_args(struct image_args *args, char *fname,
109 enum uio_seg segflg, char **argv, char **envv)
110{
111 char *argp, *envp;
112 u_int32_t *p32, arg;
113 size_t length;
114 int error;
115
116 bzero(args, sizeof(*args));
117 if (argv == NULL)
118 return (EFAULT);
119
120 /*
121 * Allocate temporary demand zeroed space for argument and
122 * environment strings
123 */
124 args->buf = (char *) kmem_alloc_wait(exec_map,
125 PATH_MAX + ARG_MAX + MAXSHELLCMDLEN);
126 if (args->buf == NULL)
127 return (ENOMEM);
128 args->begin_argv = args->buf;
129 args->endp = args->begin_argv;
130 args->stringspace = ARG_MAX;
131
132 args->fname = args->buf + ARG_MAX;
133
134 /*
135 * Copy the file name.
136 */
137 error = (segflg == UIO_SYSSPACE) ?
138 copystr(fname, args->fname, PATH_MAX, &length) :
139 copyinstr(fname, args->fname, PATH_MAX, &length);
140 if (error != 0)
141 goto err_exit;
142
143 /*
144 * extract arguments first
145 */
146 p32 = (u_int32_t *)argv;
147 for (;;) {
148 error = copyin(p32++, &arg, sizeof(arg));
149 if (error)
150 goto err_exit;
151 if (arg == 0)
152 break;
153 argp = PTRIN(arg);
154 error = copyinstr(argp, args->endp, args->stringspace, &length);
155 if (error) {
156 if (error == ENAMETOOLONG)
157 error = E2BIG;
158
159 goto err_exit;
160 }
161 args->stringspace -= length;
162 args->endp += length;
163 args->argc++;
164 }
165
166 args->begin_envv = args->endp;
167
168 /*
169 * extract environment strings
170 */
171 if (envv) {
172 p32 = (u_int32_t *)envv;
173 for (;;) {
174 error = copyin(p32++, &arg, sizeof(arg));
175 if (error)
176 goto err_exit;
177 if (arg == 0)
178 break;
179 envp = PTRIN(arg);
180 error = copyinstr(envp, args->endp, args->stringspace,
181 &length);
182 if (error) {
183 if (error == ENAMETOOLONG)
184 error = E2BIG;
185 goto err_exit;
186 }
187 args->stringspace -= length;
188 args->endp += length;
189 args->envc++;
190 }
191 }
192
193 return (0);
194
195err_exit:
196 kmem_free_wakeup(exec_map, (vm_offset_t)args->buf,
197 PATH_MAX + ARG_MAX + MAXSHELLCMDLEN);
198 args->buf = NULL;
199 return (error);
200}
201
202int
203linux_execve(struct thread *td, struct linux_execve_args *args)
204{
205 struct image_args eargs;
206 char *path;
207 int error;
208
209 LCONVPATHEXIST(td, args->path, &path);
210
211#ifdef DEBUG
212 if (ldebug(execve))
213 printf(ARGS(execve, "%s"), path);
214#endif
215
216 error = linux_exec_copyin_args(&eargs, path, UIO_SYSSPACE, args->argp,
217 args->envp);
218 free(path, M_TEMP);
219 if (error == 0)
220 error = kern_execve(td, &eargs, NULL);
221 if (error == 0)
222 /* linux process can exec fbsd one, dont attempt
223 * to create emuldata for such process using
224 * linux_proc_init, this leads to a panic on KASSERT
225 * because such process has p->p_emuldata == NULL
226 */
227 if (td->td_proc->p_sysent == &elf_linux_sysvec)
228 error = linux_proc_init(td, 0, 0);
229 return (error);
230}
231
232struct iovec32 {
233 u_int32_t iov_base;
234 int iov_len;
235};
236
237CTASSERT(sizeof(struct iovec32) == 8);
238
239static int
240linux32_copyinuio(struct iovec32 *iovp, u_int iovcnt, struct uio **uiop)
241{
242 struct iovec32 iov32;
243 struct iovec *iov;
244 struct uio *uio;
245 u_int iovlen;
246 int error, i;
247
248 *uiop = NULL;
249 if (iovcnt > UIO_MAXIOV)
250 return (EINVAL);
251 iovlen = iovcnt * sizeof(struct iovec);
252 uio = malloc(iovlen + sizeof *uio, M_IOV, M_WAITOK);
253 iov = (struct iovec *)(uio + 1);
254 for (i = 0; i < iovcnt; i++) {
255 error = copyin(&iovp[i], &iov32, sizeof(struct iovec32));
256 if (error) {
257 free(uio, M_IOV);
258 return (error);
259 }
260 iov[i].iov_base = PTRIN(iov32.iov_base);
261 iov[i].iov_len = iov32.iov_len;
262 }
263 uio->uio_iov = iov;
264 uio->uio_iovcnt = iovcnt;
265 uio->uio_segflg = UIO_USERSPACE;
266 uio->uio_offset = -1;
267 uio->uio_resid = 0;
268 for (i = 0; i < iovcnt; i++) {
269 if (iov->iov_len > INT_MAX - uio->uio_resid) {
270 free(uio, M_IOV);
271 return (EINVAL);
272 }
273 uio->uio_resid += iov->iov_len;
274 iov++;
275 }
276 *uiop = uio;
277 return (0);
278}
279
280int
281linux_readv(struct thread *td, struct linux_readv_args *uap)
282{
283 struct uio *auio;
284 int error;
285
286 error = linux32_copyinuio(uap->iovp, uap->iovcnt, &auio);
287 if (error)
288 return (error);
289 error = kern_readv(td, uap->fd, auio);
290 free(auio, M_IOV);
291 return (error);
292}
293
294int
295linux_writev(struct thread *td, struct linux_writev_args *uap)
296{
297 struct uio *auio;
298 int error;
299
300 error = linux32_copyinuio(uap->iovp, uap->iovcnt, &auio);
301 if (error)
302 return (error);
303 error = kern_writev(td, uap->fd, auio);
304 free(auio, M_IOV);
305 return (error);
306}
307
308struct l_ipc_kludge {
309 l_uintptr_t msgp;
310 l_long msgtyp;
311} __packed;
312
313int
314linux_ipc(struct thread *td, struct linux_ipc_args *args)
315{
316
317 switch (args->what & 0xFFFF) {
318 case LINUX_SEMOP: {
319 struct linux_semop_args a;
320
321 a.semid = args->arg1;
322 a.tsops = args->ptr;
323 a.nsops = args->arg2;
324 return (linux_semop(td, &a));
325 }
326 case LINUX_SEMGET: {
327 struct linux_semget_args a;
328
329 a.key = args->arg1;
330 a.nsems = args->arg2;
331 a.semflg = args->arg3;
332 return (linux_semget(td, &a));
333 }
334 case LINUX_SEMCTL: {
335 struct linux_semctl_args a;
336 int error;
337
338 a.semid = args->arg1;
339 a.semnum = args->arg2;
340 a.cmd = args->arg3;
341 error = copyin(args->ptr, &a.arg, sizeof(a.arg));
342 if (error)
343 return (error);
344 return (linux_semctl(td, &a));
345 }
346 case LINUX_MSGSND: {
347 struct linux_msgsnd_args a;
348
349 a.msqid = args->arg1;
350 a.msgp = args->ptr;
351 a.msgsz = args->arg2;
352 a.msgflg = args->arg3;
353 return (linux_msgsnd(td, &a));
354 }
355 case LINUX_MSGRCV: {
356 struct linux_msgrcv_args a;
357
358 a.msqid = args->arg1;
359 a.msgsz = args->arg2;
360 a.msgflg = args->arg3;
361 if ((args->what >> 16) == 0) {
362 struct l_ipc_kludge tmp;
363 int error;
364
365 if (args->ptr == 0)
366 return (EINVAL);
367 error = copyin(args->ptr, &tmp, sizeof(tmp));
368 if (error)
369 return (error);
370 a.msgp = PTRIN(tmp.msgp);
371 a.msgtyp = tmp.msgtyp;
372 } else {
373 a.msgp = args->ptr;
374 a.msgtyp = args->arg5;
375 }
376 return (linux_msgrcv(td, &a));
377 }
378 case LINUX_MSGGET: {
379 struct linux_msgget_args a;
380
381 a.key = args->arg1;
382 a.msgflg = args->arg2;
383 return (linux_msgget(td, &a));
384 }
385 case LINUX_MSGCTL: {
386 struct linux_msgctl_args a;
387
388 a.msqid = args->arg1;
389 a.cmd = args->arg2;
390 a.buf = args->ptr;
391 return (linux_msgctl(td, &a));
392 }
393 case LINUX_SHMAT: {
394 struct linux_shmat_args a;
395
396 a.shmid = args->arg1;
397 a.shmaddr = args->ptr;
398 a.shmflg = args->arg2;
399 a.raddr = PTRIN((l_uint)args->arg3);
400 return (linux_shmat(td, &a));
401 }
402 case LINUX_SHMDT: {
403 struct linux_shmdt_args a;
404
405 a.shmaddr = args->ptr;
406 return (linux_shmdt(td, &a));
407 }
408 case LINUX_SHMGET: {
409 struct linux_shmget_args a;
410
411 a.key = args->arg1;
412 a.size = args->arg2;
413 a.shmflg = args->arg3;
414 return (linux_shmget(td, &a));
415 }
416 case LINUX_SHMCTL: {
417 struct linux_shmctl_args a;
418
419 a.shmid = args->arg1;
420 a.cmd = args->arg2;
421 a.buf = args->ptr;
422 return (linux_shmctl(td, &a));
423 }
424 default:
425 break;
426 }
427
428 return (EINVAL);
429}
430
431int
432linux_old_select(struct thread *td, struct linux_old_select_args *args)
433{
434 struct l_old_select_argv linux_args;
435 struct linux_select_args newsel;
436 int error;
437
438#ifdef DEBUG
439 if (ldebug(old_select))
440 printf(ARGS(old_select, "%p"), args->ptr);
441#endif
442
443 error = copyin(args->ptr, &linux_args, sizeof(linux_args));
444 if (error)
445 return (error);
446
447 newsel.nfds = linux_args.nfds;
448 newsel.readfds = PTRIN(linux_args.readfds);
449 newsel.writefds = PTRIN(linux_args.writefds);
450 newsel.exceptfds = PTRIN(linux_args.exceptfds);
451 newsel.timeout = PTRIN(linux_args.timeout);
452 return (linux_select(td, &newsel));
453}
454
455int
456linux_fork(struct thread *td, struct linux_fork_args *args)
457{
458 int error;
459 struct proc *p2;
460 struct thread *td2;
461
462#ifdef DEBUG
463 if (ldebug(fork))
464 printf(ARGS(fork, ""));
465#endif
466
467 if ((error = fork1(td, RFFDG | RFPROC | RFSTOPPED, 0, &p2)) != 0)
468 return (error);
469
470 if (error == 0) {
471 td->td_retval[0] = p2->p_pid;
472 td->td_retval[1] = 0;
473 }
474
475 if (td->td_retval[1] == 1)
476 td->td_retval[0] = 0;
477 error = linux_proc_init(td, td->td_retval[0], 0);
478 if (error)
479 return (error);
480
481 td2 = FIRST_THREAD_IN_PROC(p2);
482
483 /* make it run */
484 mtx_lock_spin(&sched_lock);
485 TD_SET_CAN_RUN(td2);
486 sched_add(td2, SRQ_BORING);
487 mtx_unlock_spin(&sched_lock);
488
489 return (0);
490}
491
492int
493linux_vfork(struct thread *td, struct linux_vfork_args *args)
494{
495 int error;
496 struct proc *p2;
497 struct thread *td2;
498
499#ifdef DEBUG
500 if (ldebug(vfork))
501 printf(ARGS(vfork, ""));
502#endif
503
504 /* exclude RFPPWAIT */
505 if ((error = fork1(td, RFFDG | RFPROC | RFMEM | RFSTOPPED, 0, &p2)) != 0)
506 return (error);
507 if (error == 0) {
508 td->td_retval[0] = p2->p_pid;
509 td->td_retval[1] = 0;
510 }
511 /* Are we the child? */
512 if (td->td_retval[1] == 1)
513 td->td_retval[0] = 0;
514 error = linux_proc_init(td, td->td_retval[0], 0);
515 if (error)
516 return (error);
517
518 PROC_LOCK(p2);
519 p2->p_flag |= P_PPWAIT;
520 PROC_UNLOCK(p2);
521
522 td2 = FIRST_THREAD_IN_PROC(p2);
523
524 /* make it run */
525 mtx_lock_spin(&sched_lock);
526 TD_SET_CAN_RUN(td2);
527 sched_add(td2, SRQ_BORING);
528 mtx_unlock_spin(&sched_lock);
529
530 /* wait for the children to exit, ie. emulate vfork */
531 PROC_LOCK(p2);
532 while (p2->p_flag & P_PPWAIT)
533 msleep(td->td_proc, &p2->p_mtx, PWAIT, "ppwait", 0);
534 PROC_UNLOCK(p2);
535
536 return (0);
537}
538
539int
540linux_clone(struct thread *td, struct linux_clone_args *args)
541{
542 int error, ff = RFPROC | RFSTOPPED;
543 struct proc *p2;
544 struct thread *td2;
545 int exit_signal;
546 struct linux_emuldata *em;
547
548#ifdef DEBUG
549 if (ldebug(clone)) {
550 printf(ARGS(clone, "flags %x, stack %x, parent tid: %x, child tid: %x"),
551 (unsigned int)args->flags, (unsigned int)(uintptr_t)args->stack,
552 (unsigned int)(uintptr_t)args->parent_tidptr,
553 (unsigned int)(uintptr_t)args->child_tidptr);
554 }
555#endif
556
557 exit_signal = args->flags & 0x000000ff;
558 if (!LINUX_SIG_VALID(exit_signal) && exit_signal != 0)
559 return (EINVAL);
560
561 if (exit_signal <= LINUX_SIGTBLSZ)
562 exit_signal = linux_to_bsd_signal[_SIG_IDX(exit_signal)];
563
564 if (args->flags & CLONE_VM)
565 ff |= RFMEM;
566 if (args->flags & CLONE_SIGHAND)
567 ff |= RFSIGSHARE;
568 /*
569 * XXX: in linux sharing of fs info (chroot/cwd/umask)
570 * and open files is independant. in fbsd its in one
|
571 * structure but in reality it doesnt make any problems
572 * because both this flags are set at once usually.
| 571 * structure but in reality it doesn't cause any problems
572 * because both of these flags are usually set together.
|
573 */
574 if (!(args->flags & (CLONE_FILES | CLONE_FS)))
575 ff |= RFFDG;
576
577 /*
578 * Attempt to detect when linux_clone(2) is used for creating
579 * kernel threads. Unfortunately despite the existence of the
580 * CLONE_THREAD flag, version of linuxthreads package used in
581 * most popular distros as of beginning of 2005 doesn't make
| 573 */
574 if (!(args->flags & (CLONE_FILES | CLONE_FS)))
575 ff |= RFFDG;
576
577 /*
578 * Attempt to detect when linux_clone(2) is used for creating
579 * kernel threads. Unfortunately despite the existence of the
580 * CLONE_THREAD flag, version of linuxthreads package used in
581 * most popular distros as of beginning of 2005 doesn't make
|
582 * any use of it. Therefore, this detection relay fully on
| 582 * any use of it. Therefore, this detection relies on
|
583 * empirical observation that linuxthreads sets certain
584 * combination of flags, so that we can make more or less
585 * precise detection and notify the FreeBSD kernel that several
586 * processes are in fact part of the same threading group, so
587 * that special treatment is necessary for signal delivery
588 * between those processes and fd locking.
589 */
590 if ((args->flags & 0xffffff00) == THREADING_FLAGS)
591 ff |= RFTHREAD;
592
593 error = fork1(td, ff, 0, &p2);
594 if (error)
595 return (error);
596
597 if (args->flags & (CLONE_PARENT|CLONE_THREAD)) {
598 sx_xlock(&proctree_lock);
599 PROC_LOCK(p2);
600 proc_reparent(p2, td->td_proc->p_pptr);
601 PROC_UNLOCK(p2);
602 sx_xunlock(&proctree_lock);
603 }
604
605 /* create the emuldata */
606 error = linux_proc_init(td, p2->p_pid, args->flags);
607 /* reference it - no need to check this */
608 em = em_find(p2, EMUL_DOLOCK);
609 KASSERT(em != NULL, ("clone: emuldata not found.\n"));
610 /* and adjust it */
611 if (args->flags & CLONE_PARENT_SETTID) {
612 if (args->parent_tidptr == NULL) {
613 EMUL_UNLOCK(&emul_lock);
614 return (EINVAL);
615 }
616 error = copyout(&p2->p_pid, args->parent_tidptr, sizeof(p2->p_pid));
617 if (error) {
618 EMUL_UNLOCK(&emul_lock);
619 return (error);
620 }
621 }
622
623 if (args->flags & CLONE_THREAD) {
624 /* XXX: linux mangles pgrp and pptr somehow
625 * I think it might be this but I am not sure.
626 */
627#ifdef notyet
628 PROC_LOCK(p2);
629 p2->p_pgrp = td->td_proc->p_pgrp;
630 PROC_UNLOCK(p2);
631#endif
632 exit_signal = 0;
633 }
634
635 if (args->flags & CLONE_CHILD_SETTID)
636 em->child_set_tid = args->child_tidptr;
637 else
638 em->child_set_tid = NULL;
639
640 if (args->flags & CLONE_CHILD_CLEARTID)
641 em->child_clear_tid = args->child_tidptr;
642 else
643 em->child_clear_tid = NULL;
644
645 EMUL_UNLOCK(&emul_lock);
646
647 PROC_LOCK(p2);
648 p2->p_sigparent = exit_signal;
649 PROC_UNLOCK(p2);
650 td2 = FIRST_THREAD_IN_PROC(p2);
651 /*
652 * in a case of stack = NULL we are supposed to COW calling process stack
653 * this is what normal fork() does so we just keep the tf_rsp arg intact
654 */
655 if (args->stack)
656 td2->td_frame->tf_rsp = PTROUT(args->stack);
657
658 if (args->flags & CLONE_SETTLS) {
659 /* XXX: todo */
660 }
661
662#ifdef DEBUG
663 if (ldebug(clone))
664 printf(LMSG("clone: successful rfork to %ld, stack %p sig = %d"),
665 (long)p2->p_pid, args->stack, exit_signal);
666#endif
667 if (args->flags & CLONE_VFORK) {
668 PROC_LOCK(p2);
669 p2->p_flag |= P_PPWAIT;
670 PROC_UNLOCK(p2);
671 }
672
673 /*
674 * Make this runnable after we are finished with it.
675 */
676 mtx_lock_spin(&sched_lock);
677 TD_SET_CAN_RUN(td2);
678 sched_add(td2, SRQ_BORING);
679 mtx_unlock_spin(&sched_lock);
680
681 td->td_retval[0] = p2->p_pid;
682 td->td_retval[1] = 0;
683
684 if (args->flags & CLONE_VFORK) {
685 /* wait for the children to exit, ie. emulate vfork */
686 PROC_LOCK(p2);
687 while (p2->p_flag & P_PPWAIT)
688 msleep(td->td_proc, &p2->p_mtx, PWAIT, "ppwait", 0);
689 PROC_UNLOCK(p2);
690 }
691
692 return (0);
693}
694
695#define STACK_SIZE (2 * 1024 * 1024)
696#define GUARD_SIZE (4 * PAGE_SIZE)
697
698static int linux_mmap_common(struct thread *, struct l_mmap_argv *);
699
700int
701linux_mmap2(struct thread *td, struct linux_mmap2_args *args)
702{
703 struct l_mmap_argv linux_args;
704
705#ifdef DEBUG
706 if (ldebug(mmap2))
707 printf(ARGS(mmap2, "%p, %d, %d, 0x%08x, %d, %d"),
708 (void *)(intptr_t)args->addr, args->len, args->prot,
709 args->flags, args->fd, args->pgoff);
710#endif
711
712 linux_args.addr = PTROUT(args->addr);
713 linux_args.len = args->len;
714 linux_args.prot = args->prot;
715 linux_args.flags = args->flags;
716 linux_args.fd = args->fd;
717 linux_args.pgoff = args->pgoff;
718
719 return (linux_mmap_common(td, &linux_args));
720}
721
722int
723linux_mmap(struct thread *td, struct linux_mmap_args *args)
724{
725 int error;
726 struct l_mmap_argv linux_args;
727
728 error = copyin(args->ptr, &linux_args, sizeof(linux_args));
729 if (error)
730 return (error);
731
732#ifdef DEBUG
733 if (ldebug(mmap))
734 printf(ARGS(mmap, "%p, %d, %d, 0x%08x, %d, %d"),
735 (void *)(intptr_t)linux_args.addr, linux_args.len,
736 linux_args.prot, linux_args.flags, linux_args.fd,
737 linux_args.pgoff);
738#endif
739 if ((linux_args.pgoff % PAGE_SIZE) != 0)
740 return (EINVAL);
741 linux_args.pgoff /= PAGE_SIZE;
742
743 return (linux_mmap_common(td, &linux_args));
744}
745
746static int
747linux_mmap_common(struct thread *td, struct l_mmap_argv *linux_args)
748{
749 struct proc *p = td->td_proc;
750 struct mmap_args /* {
751 caddr_t addr;
752 size_t len;
753 int prot;
754 int flags;
755 int fd;
756 long pad;
757 off_t pos;
758 } */ bsd_args;
759 int error;
760 struct file *fp;
761
762 error = 0;
763 bsd_args.flags = 0;
764 fp = NULL;
765
766 /*
767 * Linux mmap(2):
768 * You must specify exactly one of MAP_SHARED and MAP_PRIVATE
769 */
770 if (! ((linux_args->flags & LINUX_MAP_SHARED) ^
771 (linux_args->flags & LINUX_MAP_PRIVATE)))
772 return (EINVAL);
773
774 if (linux_args->flags & LINUX_MAP_SHARED)
775 bsd_args.flags |= MAP_SHARED;
776 if (linux_args->flags & LINUX_MAP_PRIVATE)
777 bsd_args.flags |= MAP_PRIVATE;
778 if (linux_args->flags & LINUX_MAP_FIXED)
779 bsd_args.flags |= MAP_FIXED;
780 if (linux_args->flags & LINUX_MAP_ANON)
781 bsd_args.flags |= MAP_ANON;
782 else
783 bsd_args.flags |= MAP_NOSYNC;
784 if (linux_args->flags & LINUX_MAP_GROWSDOWN)
785 bsd_args.flags |= MAP_STACK;
786
787 /*
788 * PROT_READ, PROT_WRITE, or PROT_EXEC implies PROT_READ and PROT_EXEC
789 * on Linux/i386. We do this to ensure maximum compatibility.
790 * Linux/ia64 does the same in i386 emulation mode.
791 */
792 bsd_args.prot = linux_args->prot;
793 if (bsd_args.prot & (PROT_READ | PROT_WRITE | PROT_EXEC))
794 bsd_args.prot |= PROT_READ | PROT_EXEC;
795
796 if (linux_args->fd != -1) {
797 /*
798 * Linux follows Solaris mmap(2) description:
799 * The file descriptor fildes is opened with
800 * read permission, regardless of the
801 * protection options specified.
802 */
803
804 if ((error = fget(td, linux_args->fd, &fp)) != 0)
805 return (error);
806 if (fp->f_type != DTYPE_VNODE) {
807 fdrop(fp, td);
808 return (EINVAL);
809 }
810
811 /* Linux mmap() just fails for O_WRONLY files */
812 if (!(fp->f_flag & FREAD)) {
813 fdrop(fp, td);
814 return (EACCES);
815 }
816
817 fdrop(fp, td);
818 }
819 bsd_args.fd = linux_args->fd;
820
821 if (linux_args->flags & LINUX_MAP_GROWSDOWN) {
822 /*
823 * The linux MAP_GROWSDOWN option does not limit auto
824 * growth of the region. Linux mmap with this option
825 * takes as addr the inital BOS, and as len, the initial
826 * region size. It can then grow down from addr without
827 * limit. However, linux threads has an implicit internal
828 * limit to stack size of STACK_SIZE. Its just not
829 * enforced explicitly in linux. But, here we impose
830 * a limit of (STACK_SIZE - GUARD_SIZE) on the stack
831 * region, since we can do this with our mmap.
832 *
833 * Our mmap with MAP_STACK takes addr as the maximum
834 * downsize limit on BOS, and as len the max size of
835 * the region. It them maps the top SGROWSIZ bytes,
| 583 * empirical observation that linuxthreads sets certain
584 * combination of flags, so that we can make more or less
585 * precise detection and notify the FreeBSD kernel that several
586 * processes are in fact part of the same threading group, so
587 * that special treatment is necessary for signal delivery
588 * between those processes and fd locking.
589 */
590 if ((args->flags & 0xffffff00) == THREADING_FLAGS)
591 ff |= RFTHREAD;
592
593 error = fork1(td, ff, 0, &p2);
594 if (error)
595 return (error);
596
597 if (args->flags & (CLONE_PARENT|CLONE_THREAD)) {
598 sx_xlock(&proctree_lock);
599 PROC_LOCK(p2);
600 proc_reparent(p2, td->td_proc->p_pptr);
601 PROC_UNLOCK(p2);
602 sx_xunlock(&proctree_lock);
603 }
604
605 /* create the emuldata */
606 error = linux_proc_init(td, p2->p_pid, args->flags);
607 /* reference it - no need to check this */
608 em = em_find(p2, EMUL_DOLOCK);
609 KASSERT(em != NULL, ("clone: emuldata not found.\n"));
610 /* and adjust it */
611 if (args->flags & CLONE_PARENT_SETTID) {
612 if (args->parent_tidptr == NULL) {
613 EMUL_UNLOCK(&emul_lock);
614 return (EINVAL);
615 }
616 error = copyout(&p2->p_pid, args->parent_tidptr, sizeof(p2->p_pid));
617 if (error) {
618 EMUL_UNLOCK(&emul_lock);
619 return (error);
620 }
621 }
622
623 if (args->flags & CLONE_THREAD) {
624 /* XXX: linux mangles pgrp and pptr somehow
625 * I think it might be this but I am not sure.
626 */
627#ifdef notyet
628 PROC_LOCK(p2);
629 p2->p_pgrp = td->td_proc->p_pgrp;
630 PROC_UNLOCK(p2);
631#endif
632 exit_signal = 0;
633 }
634
635 if (args->flags & CLONE_CHILD_SETTID)
636 em->child_set_tid = args->child_tidptr;
637 else
638 em->child_set_tid = NULL;
639
640 if (args->flags & CLONE_CHILD_CLEARTID)
641 em->child_clear_tid = args->child_tidptr;
642 else
643 em->child_clear_tid = NULL;
644
645 EMUL_UNLOCK(&emul_lock);
646
647 PROC_LOCK(p2);
648 p2->p_sigparent = exit_signal;
649 PROC_UNLOCK(p2);
650 td2 = FIRST_THREAD_IN_PROC(p2);
651 /*
652 * in a case of stack = NULL we are supposed to COW calling process stack
653 * this is what normal fork() does so we just keep the tf_rsp arg intact
654 */
655 if (args->stack)
656 td2->td_frame->tf_rsp = PTROUT(args->stack);
657
658 if (args->flags & CLONE_SETTLS) {
659 /* XXX: todo */
660 }
661
662#ifdef DEBUG
663 if (ldebug(clone))
664 printf(LMSG("clone: successful rfork to %ld, stack %p sig = %d"),
665 (long)p2->p_pid, args->stack, exit_signal);
666#endif
667 if (args->flags & CLONE_VFORK) {
668 PROC_LOCK(p2);
669 p2->p_flag |= P_PPWAIT;
670 PROC_UNLOCK(p2);
671 }
672
673 /*
674 * Make this runnable after we are finished with it.
675 */
676 mtx_lock_spin(&sched_lock);
677 TD_SET_CAN_RUN(td2);
678 sched_add(td2, SRQ_BORING);
679 mtx_unlock_spin(&sched_lock);
680
681 td->td_retval[0] = p2->p_pid;
682 td->td_retval[1] = 0;
683
684 if (args->flags & CLONE_VFORK) {
685 /* wait for the children to exit, ie. emulate vfork */
686 PROC_LOCK(p2);
687 while (p2->p_flag & P_PPWAIT)
688 msleep(td->td_proc, &p2->p_mtx, PWAIT, "ppwait", 0);
689 PROC_UNLOCK(p2);
690 }
691
692 return (0);
693}
694
695#define STACK_SIZE (2 * 1024 * 1024)
696#define GUARD_SIZE (4 * PAGE_SIZE)
697
698static int linux_mmap_common(struct thread *, struct l_mmap_argv *);
699
700int
701linux_mmap2(struct thread *td, struct linux_mmap2_args *args)
702{
703 struct l_mmap_argv linux_args;
704
705#ifdef DEBUG
706 if (ldebug(mmap2))
707 printf(ARGS(mmap2, "%p, %d, %d, 0x%08x, %d, %d"),
708 (void *)(intptr_t)args->addr, args->len, args->prot,
709 args->flags, args->fd, args->pgoff);
710#endif
711
712 linux_args.addr = PTROUT(args->addr);
713 linux_args.len = args->len;
714 linux_args.prot = args->prot;
715 linux_args.flags = args->flags;
716 linux_args.fd = args->fd;
717 linux_args.pgoff = args->pgoff;
718
719 return (linux_mmap_common(td, &linux_args));
720}
721
722int
723linux_mmap(struct thread *td, struct linux_mmap_args *args)
724{
725 int error;
726 struct l_mmap_argv linux_args;
727
728 error = copyin(args->ptr, &linux_args, sizeof(linux_args));
729 if (error)
730 return (error);
731
732#ifdef DEBUG
733 if (ldebug(mmap))
734 printf(ARGS(mmap, "%p, %d, %d, 0x%08x, %d, %d"),
735 (void *)(intptr_t)linux_args.addr, linux_args.len,
736 linux_args.prot, linux_args.flags, linux_args.fd,
737 linux_args.pgoff);
738#endif
739 if ((linux_args.pgoff % PAGE_SIZE) != 0)
740 return (EINVAL);
741 linux_args.pgoff /= PAGE_SIZE;
742
743 return (linux_mmap_common(td, &linux_args));
744}
745
746static int
747linux_mmap_common(struct thread *td, struct l_mmap_argv *linux_args)
748{
749 struct proc *p = td->td_proc;
750 struct mmap_args /* {
751 caddr_t addr;
752 size_t len;
753 int prot;
754 int flags;
755 int fd;
756 long pad;
757 off_t pos;
758 } */ bsd_args;
759 int error;
760 struct file *fp;
761
762 error = 0;
763 bsd_args.flags = 0;
764 fp = NULL;
765
766 /*
767 * Linux mmap(2):
768 * You must specify exactly one of MAP_SHARED and MAP_PRIVATE
769 */
770 if (! ((linux_args->flags & LINUX_MAP_SHARED) ^
771 (linux_args->flags & LINUX_MAP_PRIVATE)))
772 return (EINVAL);
773
774 if (linux_args->flags & LINUX_MAP_SHARED)
775 bsd_args.flags |= MAP_SHARED;
776 if (linux_args->flags & LINUX_MAP_PRIVATE)
777 bsd_args.flags |= MAP_PRIVATE;
778 if (linux_args->flags & LINUX_MAP_FIXED)
779 bsd_args.flags |= MAP_FIXED;
780 if (linux_args->flags & LINUX_MAP_ANON)
781 bsd_args.flags |= MAP_ANON;
782 else
783 bsd_args.flags |= MAP_NOSYNC;
784 if (linux_args->flags & LINUX_MAP_GROWSDOWN)
785 bsd_args.flags |= MAP_STACK;
786
787 /*
788 * PROT_READ, PROT_WRITE, or PROT_EXEC implies PROT_READ and PROT_EXEC
789 * on Linux/i386. We do this to ensure maximum compatibility.
790 * Linux/ia64 does the same in i386 emulation mode.
791 */
792 bsd_args.prot = linux_args->prot;
793 if (bsd_args.prot & (PROT_READ | PROT_WRITE | PROT_EXEC))
794 bsd_args.prot |= PROT_READ | PROT_EXEC;
795
796 if (linux_args->fd != -1) {
797 /*
798 * Linux follows Solaris mmap(2) description:
799 * The file descriptor fildes is opened with
800 * read permission, regardless of the
801 * protection options specified.
802 */
803
804 if ((error = fget(td, linux_args->fd, &fp)) != 0)
805 return (error);
806 if (fp->f_type != DTYPE_VNODE) {
807 fdrop(fp, td);
808 return (EINVAL);
809 }
810
811 /* Linux mmap() just fails for O_WRONLY files */
812 if (!(fp->f_flag & FREAD)) {
813 fdrop(fp, td);
814 return (EACCES);
815 }
816
817 fdrop(fp, td);
818 }
819 bsd_args.fd = linux_args->fd;
820
821 if (linux_args->flags & LINUX_MAP_GROWSDOWN) {
822 /*
823 * The linux MAP_GROWSDOWN option does not limit auto
824 * growth of the region. Linux mmap with this option
825 * takes as addr the inital BOS, and as len, the initial
826 * region size. It can then grow down from addr without
827 * limit. However, linux threads has an implicit internal
828 * limit to stack size of STACK_SIZE. Its just not
829 * enforced explicitly in linux. But, here we impose
830 * a limit of (STACK_SIZE - GUARD_SIZE) on the stack
831 * region, since we can do this with our mmap.
832 *
833 * Our mmap with MAP_STACK takes addr as the maximum
834 * downsize limit on BOS, and as len the max size of
835 * the region. It them maps the top SGROWSIZ bytes,
|
836 * and autgrows the region down, up to the limit
| 836 * and auto grows the region down, up to the limit
|
837 * in addr.
838 *
839 * If we don't use the MAP_STACK option, the effect
840 * of this code is to allocate a stack region of a
841 * fixed size of (STACK_SIZE - GUARD_SIZE).
842 */
843
844 if ((caddr_t)PTRIN(linux_args->addr) + linux_args->len >
845 p->p_vmspace->vm_maxsaddr) {
846 /*
847 * Some linux apps will attempt to mmap
848 * thread stacks near the top of their
849 * address space. If their TOS is greater
850 * than vm_maxsaddr, vm_map_growstack()
851 * will confuse the thread stack with the
852 * process stack and deliver a SEGV if they
853 * attempt to grow the thread stack past their
854 * current stacksize rlimit. To avoid this,
855 * adjust vm_maxsaddr upwards to reflect
856 * the current stacksize rlimit rather
857 * than the maximum possible stacksize.
858 * It would be better to adjust the
859 * mmap'ed region, but some apps do not check
860 * mmap's return value.
861 */
862 PROC_LOCK(p);
863 p->p_vmspace->vm_maxsaddr = (char *)LINUX32_USRSTACK -
864 lim_cur(p, RLIMIT_STACK);
865 PROC_UNLOCK(p);
866 }
867
868 /* This gives us our maximum stack size */
869 if (linux_args->len > STACK_SIZE - GUARD_SIZE)
870 bsd_args.len = linux_args->len;
871 else
872 bsd_args.len = STACK_SIZE - GUARD_SIZE;
873
874 /*
875 * This gives us a new BOS. If we're using VM_STACK, then
876 * mmap will just map the top SGROWSIZ bytes, and let
877 * the stack grow down to the limit at BOS. If we're
878 * not using VM_STACK we map the full stack, since we
879 * don't have a way to autogrow it.
880 */
881 bsd_args.addr = (caddr_t)PTRIN(linux_args->addr) -
882 bsd_args.len;
883 } else {
884 bsd_args.addr = (caddr_t)PTRIN(linux_args->addr);
885 bsd_args.len = linux_args->len;
886 }
887 bsd_args.pos = (off_t)linux_args->pgoff * PAGE_SIZE;
888 bsd_args.pad = 0;
889
890#ifdef DEBUG
891 if (ldebug(mmap))
892 printf("-> %s(%p, %d, %d, 0x%08x, %d, 0x%x)\n",
893 __func__,
894 (void *)bsd_args.addr, (int)bsd_args.len, bsd_args.prot,
895 bsd_args.flags, bsd_args.fd, (int)bsd_args.pos);
896#endif
897 error = mmap(td, &bsd_args);
898#ifdef DEBUG
899 if (ldebug(mmap))
900 printf("-> %s() return: 0x%x (0x%08x)\n",
901 __func__, error, (u_int)td->td_retval[0]);
902#endif
903 return (error);
904}
905
906int
907linux_iopl(struct thread *td, struct linux_iopl_args *args)
908{
909 int error;
910
911 if (args->level < 0 || args->level > 3)
912 return (EINVAL);
913 if ((error = priv_check(td, PRIV_IO)) != 0)
914 return (error);
915 if ((error = securelevel_gt(td->td_ucred, 0)) != 0)
916 return (error);
917 td->td_frame->tf_rflags = (td->td_frame->tf_rflags & ~PSL_IOPL) |
918 (args->level * (PSL_IOPL / 3));
919
920 return (0);
921}
922
923int
924linux_pipe(struct thread *td, struct linux_pipe_args *args)
925{
926 int pip[2];
927 int error;
928 register_t reg_rdx;
929
930#ifdef DEBUG
931 if (ldebug(pipe))
932 printf(ARGS(pipe, "*"));
933#endif
934
935 reg_rdx = td->td_retval[1];
936 error = pipe(td, 0);
937 if (error) {
938 td->td_retval[1] = reg_rdx;
939 return (error);
940 }
941
942 pip[0] = td->td_retval[0];
943 pip[1] = td->td_retval[1];
944 error = copyout(pip, args->pipefds, 2 * sizeof(int));
945 if (error) {
946 td->td_retval[1] = reg_rdx;
947 return (error);
948 }
949
950 td->td_retval[1] = reg_rdx;
951 td->td_retval[0] = 0;
952 return (0);
953}
954
955int
956linux_sigaction(struct thread *td, struct linux_sigaction_args *args)
957{
958 l_osigaction_t osa;
959 l_sigaction_t act, oact;
960 int error;
961
962#ifdef DEBUG
963 if (ldebug(sigaction))
964 printf(ARGS(sigaction, "%d, %p, %p"),
965 args->sig, (void *)args->nsa, (void *)args->osa);
966#endif
967
968 if (args->nsa != NULL) {
969 error = copyin(args->nsa, &osa, sizeof(l_osigaction_t));
970 if (error)
971 return (error);
972 act.lsa_handler = osa.lsa_handler;
973 act.lsa_flags = osa.lsa_flags;
974 act.lsa_restorer = osa.lsa_restorer;
975 LINUX_SIGEMPTYSET(act.lsa_mask);
976 act.lsa_mask.__bits[0] = osa.lsa_mask;
977 }
978
979 error = linux_do_sigaction(td, args->sig, args->nsa ? &act : NULL,
980 args->osa ? &oact : NULL);
981
982 if (args->osa != NULL && !error) {
983 osa.lsa_handler = oact.lsa_handler;
984 osa.lsa_flags = oact.lsa_flags;
985 osa.lsa_restorer = oact.lsa_restorer;
986 osa.lsa_mask = oact.lsa_mask.__bits[0];
987 error = copyout(&osa, args->osa, sizeof(l_osigaction_t));
988 }
989
990 return (error);
991}
992
993/*
994 * Linux has two extra args, restart and oldmask. We dont use these,
995 * but it seems that "restart" is actually a context pointer that
996 * enables the signal to happen with a different register set.
997 */
998int
999linux_sigsuspend(struct thread *td, struct linux_sigsuspend_args *args)
1000{
1001 sigset_t sigmask;
1002 l_sigset_t mask;
1003
1004#ifdef DEBUG
1005 if (ldebug(sigsuspend))
1006 printf(ARGS(sigsuspend, "%08lx"), (unsigned long)args->mask);
1007#endif
1008
1009 LINUX_SIGEMPTYSET(mask);
1010 mask.__bits[0] = args->mask;
1011 linux_to_bsd_sigset(&mask, &sigmask);
1012 return (kern_sigsuspend(td, sigmask));
1013}
1014
1015int
1016linux_rt_sigsuspend(struct thread *td, struct linux_rt_sigsuspend_args *uap)
1017{
1018 l_sigset_t lmask;
1019 sigset_t sigmask;
1020 int error;
1021
1022#ifdef DEBUG
1023 if (ldebug(rt_sigsuspend))
1024 printf(ARGS(rt_sigsuspend, "%p, %d"),
1025 (void *)uap->newset, uap->sigsetsize);
1026#endif
1027
1028 if (uap->sigsetsize != sizeof(l_sigset_t))
1029 return (EINVAL);
1030
1031 error = copyin(uap->newset, &lmask, sizeof(l_sigset_t));
1032 if (error)
1033 return (error);
1034
1035 linux_to_bsd_sigset(&lmask, &sigmask);
1036 return (kern_sigsuspend(td, sigmask));
1037}
1038
1039int
1040linux_pause(struct thread *td, struct linux_pause_args *args)
1041{
1042 struct proc *p = td->td_proc;
1043 sigset_t sigmask;
1044
1045#ifdef DEBUG
1046 if (ldebug(pause))
1047 printf(ARGS(pause, ""));
1048#endif
1049
1050 PROC_LOCK(p);
1051 sigmask = td->td_sigmask;
1052 PROC_UNLOCK(p);
1053 return (kern_sigsuspend(td, sigmask));
1054}
1055
1056int
1057linux_sigaltstack(struct thread *td, struct linux_sigaltstack_args *uap)
1058{
1059 stack_t ss, oss;
1060 l_stack_t lss;
1061 int error;
1062
1063#ifdef DEBUG
1064 if (ldebug(sigaltstack))
1065 printf(ARGS(sigaltstack, "%p, %p"), uap->uss, uap->uoss);
1066#endif
1067
1068 if (uap->uss != NULL) {
1069 error = copyin(uap->uss, &lss, sizeof(l_stack_t));
1070 if (error)
1071 return (error);
1072
1073 ss.ss_sp = PTRIN(lss.ss_sp);
1074 ss.ss_size = lss.ss_size;
1075 ss.ss_flags = linux_to_bsd_sigaltstack(lss.ss_flags);
1076 }
1077 error = kern_sigaltstack(td, (uap->uss != NULL) ? &ss : NULL,
1078 (uap->uoss != NULL) ? &oss : NULL);
1079 if (!error && uap->uoss != NULL) {
1080 lss.ss_sp = PTROUT(oss.ss_sp);
1081 lss.ss_size = oss.ss_size;
1082 lss.ss_flags = bsd_to_linux_sigaltstack(oss.ss_flags);
1083 error = copyout(&lss, uap->uoss, sizeof(l_stack_t));
1084 }
1085
1086 return (error);
1087}
1088
1089int
1090linux_ftruncate64(struct thread *td, struct linux_ftruncate64_args *args)
1091{
1092 struct ftruncate_args sa;
1093
1094#ifdef DEBUG
1095 if (ldebug(ftruncate64))
1096 printf(ARGS(ftruncate64, "%u, %jd"), args->fd,
1097 (intmax_t)args->length);
1098#endif
1099
1100 sa.fd = args->fd;
1101 sa.pad = 0;
1102 sa.length = args->length;
1103 return ftruncate(td, &sa);
1104}
1105
1106int
1107linux_gettimeofday(struct thread *td, struct linux_gettimeofday_args *uap)
1108{
1109 struct timeval atv;
1110 l_timeval atv32;
1111 struct timezone rtz;
1112 int error = 0;
1113
1114 if (uap->tp) {
1115 microtime(&atv);
1116 atv32.tv_sec = atv.tv_sec;
1117 atv32.tv_usec = atv.tv_usec;
1118 error = copyout(&atv32, uap->tp, sizeof (atv32));
1119 }
1120 if (error == 0 && uap->tzp != NULL) {
1121 rtz.tz_minuteswest = tz_minuteswest;
1122 rtz.tz_dsttime = tz_dsttime;
1123 error = copyout(&rtz, uap->tzp, sizeof (rtz));
1124 }
1125 return (error);
1126}
1127
1128int
1129linux_getrusage(struct thread *td, struct linux_getrusage_args *uap)
1130{
1131 struct l_rusage s32;
1132 struct rusage s;
1133 int error;
1134
1135 error = kern_getrusage(td, uap->who, &s);
1136 if (error != 0)
1137 return (error);
1138 if (uap->rusage != NULL) {
1139 s32.ru_utime.tv_sec = s.ru_utime.tv_sec;
1140 s32.ru_utime.tv_usec = s.ru_utime.tv_usec;
1141 s32.ru_stime.tv_sec = s.ru_stime.tv_sec;
1142 s32.ru_stime.tv_usec = s.ru_stime.tv_usec;
1143 s32.ru_maxrss = s.ru_maxrss;
1144 s32.ru_ixrss = s.ru_ixrss;
1145 s32.ru_idrss = s.ru_idrss;
1146 s32.ru_isrss = s.ru_isrss;
1147 s32.ru_minflt = s.ru_minflt;
1148 s32.ru_majflt = s.ru_majflt;
1149 s32.ru_nswap = s.ru_nswap;
1150 s32.ru_inblock = s.ru_inblock;
1151 s32.ru_oublock = s.ru_oublock;
1152 s32.ru_msgsnd = s.ru_msgsnd;
1153 s32.ru_msgrcv = s.ru_msgrcv;
1154 s32.ru_nsignals = s.ru_nsignals;
1155 s32.ru_nvcsw = s.ru_nvcsw;
1156 s32.ru_nivcsw = s.ru_nivcsw;
1157 error = copyout(&s32, uap->rusage, sizeof(s32));
1158 }
1159 return (error);
1160}
1161
1162int
1163linux_sched_rr_get_interval(struct thread *td,
1164 struct linux_sched_rr_get_interval_args *uap)
1165{
1166 struct timespec ts;
1167 struct l_timespec ts32;
1168 int error;
1169
1170 error = kern_sched_rr_get_interval(td, uap->pid, &ts);
1171 if (error != 0)
1172 return (error);
1173 ts32.tv_sec = ts.tv_sec;
1174 ts32.tv_nsec = ts.tv_nsec;
1175 return (copyout(&ts32, uap->interval, sizeof(ts32)));
1176}
1177
1178int
1179linux_mprotect(struct thread *td, struct linux_mprotect_args *uap)
1180{
1181 struct mprotect_args bsd_args;
1182
1183 bsd_args.addr = uap->addr;
1184 bsd_args.len = uap->len;
1185 bsd_args.prot = uap->prot;
1186 if (bsd_args.prot & (PROT_READ | PROT_WRITE | PROT_EXEC))
1187 bsd_args.prot |= PROT_READ | PROT_EXEC;
1188 return (mprotect(td, &bsd_args));
1189}
| 837 * in addr.
838 *
839 * If we don't use the MAP_STACK option, the effect
840 * of this code is to allocate a stack region of a
841 * fixed size of (STACK_SIZE - GUARD_SIZE).
842 */
843
844 if ((caddr_t)PTRIN(linux_args->addr) + linux_args->len >
845 p->p_vmspace->vm_maxsaddr) {
846 /*
847 * Some linux apps will attempt to mmap
848 * thread stacks near the top of their
849 * address space. If their TOS is greater
850 * than vm_maxsaddr, vm_map_growstack()
851 * will confuse the thread stack with the
852 * process stack and deliver a SEGV if they
853 * attempt to grow the thread stack past their
854 * current stacksize rlimit. To avoid this,
855 * adjust vm_maxsaddr upwards to reflect
856 * the current stacksize rlimit rather
857 * than the maximum possible stacksize.
858 * It would be better to adjust the
859 * mmap'ed region, but some apps do not check
860 * mmap's return value.
861 */
862 PROC_LOCK(p);
863 p->p_vmspace->vm_maxsaddr = (char *)LINUX32_USRSTACK -
864 lim_cur(p, RLIMIT_STACK);
865 PROC_UNLOCK(p);
866 }
867
868 /* This gives us our maximum stack size */
869 if (linux_args->len > STACK_SIZE - GUARD_SIZE)
870 bsd_args.len = linux_args->len;
871 else
872 bsd_args.len = STACK_SIZE - GUARD_SIZE;
873
874 /*
875 * This gives us a new BOS. If we're using VM_STACK, then
876 * mmap will just map the top SGROWSIZ bytes, and let
877 * the stack grow down to the limit at BOS. If we're
878 * not using VM_STACK we map the full stack, since we
879 * don't have a way to autogrow it.
880 */
881 bsd_args.addr = (caddr_t)PTRIN(linux_args->addr) -
882 bsd_args.len;
883 } else {
884 bsd_args.addr = (caddr_t)PTRIN(linux_args->addr);
885 bsd_args.len = linux_args->len;
886 }
887 bsd_args.pos = (off_t)linux_args->pgoff * PAGE_SIZE;
888 bsd_args.pad = 0;
889
890#ifdef DEBUG
891 if (ldebug(mmap))
892 printf("-> %s(%p, %d, %d, 0x%08x, %d, 0x%x)\n",
893 __func__,
894 (void *)bsd_args.addr, (int)bsd_args.len, bsd_args.prot,
895 bsd_args.flags, bsd_args.fd, (int)bsd_args.pos);
896#endif
897 error = mmap(td, &bsd_args);
898#ifdef DEBUG
899 if (ldebug(mmap))
900 printf("-> %s() return: 0x%x (0x%08x)\n",
901 __func__, error, (u_int)td->td_retval[0]);
902#endif
903 return (error);
904}
905
906int
907linux_iopl(struct thread *td, struct linux_iopl_args *args)
908{
909 int error;
910
911 if (args->level < 0 || args->level > 3)
912 return (EINVAL);
913 if ((error = priv_check(td, PRIV_IO)) != 0)
914 return (error);
915 if ((error = securelevel_gt(td->td_ucred, 0)) != 0)
916 return (error);
917 td->td_frame->tf_rflags = (td->td_frame->tf_rflags & ~PSL_IOPL) |
918 (args->level * (PSL_IOPL / 3));
919
920 return (0);
921}
922
923int
924linux_pipe(struct thread *td, struct linux_pipe_args *args)
925{
926 int pip[2];
927 int error;
928 register_t reg_rdx;
929
930#ifdef DEBUG
931 if (ldebug(pipe))
932 printf(ARGS(pipe, "*"));
933#endif
934
935 reg_rdx = td->td_retval[1];
936 error = pipe(td, 0);
937 if (error) {
938 td->td_retval[1] = reg_rdx;
939 return (error);
940 }
941
942 pip[0] = td->td_retval[0];
943 pip[1] = td->td_retval[1];
944 error = copyout(pip, args->pipefds, 2 * sizeof(int));
945 if (error) {
946 td->td_retval[1] = reg_rdx;
947 return (error);
948 }
949
950 td->td_retval[1] = reg_rdx;
951 td->td_retval[0] = 0;
952 return (0);
953}
954
955int
956linux_sigaction(struct thread *td, struct linux_sigaction_args *args)
957{
958 l_osigaction_t osa;
959 l_sigaction_t act, oact;
960 int error;
961
962#ifdef DEBUG
963 if (ldebug(sigaction))
964 printf(ARGS(sigaction, "%d, %p, %p"),
965 args->sig, (void *)args->nsa, (void *)args->osa);
966#endif
967
968 if (args->nsa != NULL) {
969 error = copyin(args->nsa, &osa, sizeof(l_osigaction_t));
970 if (error)
971 return (error);
972 act.lsa_handler = osa.lsa_handler;
973 act.lsa_flags = osa.lsa_flags;
974 act.lsa_restorer = osa.lsa_restorer;
975 LINUX_SIGEMPTYSET(act.lsa_mask);
976 act.lsa_mask.__bits[0] = osa.lsa_mask;
977 }
978
979 error = linux_do_sigaction(td, args->sig, args->nsa ? &act : NULL,
980 args->osa ? &oact : NULL);
981
982 if (args->osa != NULL && !error) {
983 osa.lsa_handler = oact.lsa_handler;
984 osa.lsa_flags = oact.lsa_flags;
985 osa.lsa_restorer = oact.lsa_restorer;
986 osa.lsa_mask = oact.lsa_mask.__bits[0];
987 error = copyout(&osa, args->osa, sizeof(l_osigaction_t));
988 }
989
990 return (error);
991}
992
993/*
994 * Linux has two extra args, restart and oldmask. We dont use these,
995 * but it seems that "restart" is actually a context pointer that
996 * enables the signal to happen with a different register set.
997 */
998int
999linux_sigsuspend(struct thread *td, struct linux_sigsuspend_args *args)
1000{
1001 sigset_t sigmask;
1002 l_sigset_t mask;
1003
1004#ifdef DEBUG
1005 if (ldebug(sigsuspend))
1006 printf(ARGS(sigsuspend, "%08lx"), (unsigned long)args->mask);
1007#endif
1008
1009 LINUX_SIGEMPTYSET(mask);
1010 mask.__bits[0] = args->mask;
1011 linux_to_bsd_sigset(&mask, &sigmask);
1012 return (kern_sigsuspend(td, sigmask));
1013}
1014
1015int
1016linux_rt_sigsuspend(struct thread *td, struct linux_rt_sigsuspend_args *uap)
1017{
1018 l_sigset_t lmask;
1019 sigset_t sigmask;
1020 int error;
1021
1022#ifdef DEBUG
1023 if (ldebug(rt_sigsuspend))
1024 printf(ARGS(rt_sigsuspend, "%p, %d"),
1025 (void *)uap->newset, uap->sigsetsize);
1026#endif
1027
1028 if (uap->sigsetsize != sizeof(l_sigset_t))
1029 return (EINVAL);
1030
1031 error = copyin(uap->newset, &lmask, sizeof(l_sigset_t));
1032 if (error)
1033 return (error);
1034
1035 linux_to_bsd_sigset(&lmask, &sigmask);
1036 return (kern_sigsuspend(td, sigmask));
1037}
1038
1039int
1040linux_pause(struct thread *td, struct linux_pause_args *args)
1041{
1042 struct proc *p = td->td_proc;
1043 sigset_t sigmask;
1044
1045#ifdef DEBUG
1046 if (ldebug(pause))
1047 printf(ARGS(pause, ""));
1048#endif
1049
1050 PROC_LOCK(p);
1051 sigmask = td->td_sigmask;
1052 PROC_UNLOCK(p);
1053 return (kern_sigsuspend(td, sigmask));
1054}
1055
1056int
1057linux_sigaltstack(struct thread *td, struct linux_sigaltstack_args *uap)
1058{
1059 stack_t ss, oss;
1060 l_stack_t lss;
1061 int error;
1062
1063#ifdef DEBUG
1064 if (ldebug(sigaltstack))
1065 printf(ARGS(sigaltstack, "%p, %p"), uap->uss, uap->uoss);
1066#endif
1067
1068 if (uap->uss != NULL) {
1069 error = copyin(uap->uss, &lss, sizeof(l_stack_t));
1070 if (error)
1071 return (error);
1072
1073 ss.ss_sp = PTRIN(lss.ss_sp);
1074 ss.ss_size = lss.ss_size;
1075 ss.ss_flags = linux_to_bsd_sigaltstack(lss.ss_flags);
1076 }
1077 error = kern_sigaltstack(td, (uap->uss != NULL) ? &ss : NULL,
1078 (uap->uoss != NULL) ? &oss : NULL);
1079 if (!error && uap->uoss != NULL) {
1080 lss.ss_sp = PTROUT(oss.ss_sp);
1081 lss.ss_size = oss.ss_size;
1082 lss.ss_flags = bsd_to_linux_sigaltstack(oss.ss_flags);
1083 error = copyout(&lss, uap->uoss, sizeof(l_stack_t));
1084 }
1085
1086 return (error);
1087}
1088
1089int
1090linux_ftruncate64(struct thread *td, struct linux_ftruncate64_args *args)
1091{
1092 struct ftruncate_args sa;
1093
1094#ifdef DEBUG
1095 if (ldebug(ftruncate64))
1096 printf(ARGS(ftruncate64, "%u, %jd"), args->fd,
1097 (intmax_t)args->length);
1098#endif
1099
1100 sa.fd = args->fd;
1101 sa.pad = 0;
1102 sa.length = args->length;
1103 return ftruncate(td, &sa);
1104}
1105
1106int
1107linux_gettimeofday(struct thread *td, struct linux_gettimeofday_args *uap)
1108{
1109 struct timeval atv;
1110 l_timeval atv32;
1111 struct timezone rtz;
1112 int error = 0;
1113
1114 if (uap->tp) {
1115 microtime(&atv);
1116 atv32.tv_sec = atv.tv_sec;
1117 atv32.tv_usec = atv.tv_usec;
1118 error = copyout(&atv32, uap->tp, sizeof (atv32));
1119 }
1120 if (error == 0 && uap->tzp != NULL) {
1121 rtz.tz_minuteswest = tz_minuteswest;
1122 rtz.tz_dsttime = tz_dsttime;
1123 error = copyout(&rtz, uap->tzp, sizeof (rtz));
1124 }
1125 return (error);
1126}
1127
1128int
1129linux_getrusage(struct thread *td, struct linux_getrusage_args *uap)
1130{
1131 struct l_rusage s32;
1132 struct rusage s;
1133 int error;
1134
1135 error = kern_getrusage(td, uap->who, &s);
1136 if (error != 0)
1137 return (error);
1138 if (uap->rusage != NULL) {
1139 s32.ru_utime.tv_sec = s.ru_utime.tv_sec;
1140 s32.ru_utime.tv_usec = s.ru_utime.tv_usec;
1141 s32.ru_stime.tv_sec = s.ru_stime.tv_sec;
1142 s32.ru_stime.tv_usec = s.ru_stime.tv_usec;
1143 s32.ru_maxrss = s.ru_maxrss;
1144 s32.ru_ixrss = s.ru_ixrss;
1145 s32.ru_idrss = s.ru_idrss;
1146 s32.ru_isrss = s.ru_isrss;
1147 s32.ru_minflt = s.ru_minflt;
1148 s32.ru_majflt = s.ru_majflt;
1149 s32.ru_nswap = s.ru_nswap;
1150 s32.ru_inblock = s.ru_inblock;
1151 s32.ru_oublock = s.ru_oublock;
1152 s32.ru_msgsnd = s.ru_msgsnd;
1153 s32.ru_msgrcv = s.ru_msgrcv;
1154 s32.ru_nsignals = s.ru_nsignals;
1155 s32.ru_nvcsw = s.ru_nvcsw;
1156 s32.ru_nivcsw = s.ru_nivcsw;
1157 error = copyout(&s32, uap->rusage, sizeof(s32));
1158 }
1159 return (error);
1160}
1161
1162int
1163linux_sched_rr_get_interval(struct thread *td,
1164 struct linux_sched_rr_get_interval_args *uap)
1165{
1166 struct timespec ts;
1167 struct l_timespec ts32;
1168 int error;
1169
1170 error = kern_sched_rr_get_interval(td, uap->pid, &ts);
1171 if (error != 0)
1172 return (error);
1173 ts32.tv_sec = ts.tv_sec;
1174 ts32.tv_nsec = ts.tv_nsec;
1175 return (copyout(&ts32, uap->interval, sizeof(ts32)));
1176}
1177
1178int
1179linux_mprotect(struct thread *td, struct linux_mprotect_args *uap)
1180{
1181 struct mprotect_args bsd_args;
1182
1183 bsd_args.addr = uap->addr;
1184 bsd_args.len = uap->len;
1185 bsd_args.prot = uap->prot;
1186 if (bsd_args.prot & (PROT_READ | PROT_WRITE | PROT_EXEC))
1187 bsd_args.prot |= PROT_READ | PROT_EXEC;
1188 return (mprotect(td, &bsd_args));
1189}
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