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authorAtsushi Nemoto <anemo@mba.ocn.ne.jp>2006-11-07 04:02:44 -0500
committerRalf Baechle <ralf@linux-mips.org>2006-12-04 17:43:12 -0500
commit05e4396651ca1cac51d8da9ff4992741c9dc1e39 (patch)
tree15881e19dfd7550dbe26245a356a10a979577086
parent9567772f14f6d2692ea88ddc111a5a6b352fd512 (diff)
[MIPS] Use SYSVIPC_COMPAT to fix various problems on N32
N32 SysV IPC system calls should use 32-bit compatible code. arch/mips/kernel/linux32.c have similar compatible code for O32, but ipc/compat.c seems more complete. We can use it for both N32 and O32. This patch should fix these problems (and other possible problems): http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=1149188824.6986.6.camel%40diimka-laptop http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=44C6B829.8050508%40caviumnetworks.com Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat
-rw-r--r--arch/mips/Kconfig5
-rw-r--r--arch/mips/kernel/linux32.c578
-rw-r--r--arch/mips/kernel/scall64-n32.S14
-rw-r--r--include/asm-mips/compat.h68
4 files changed, 103 insertions, 562 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 27f83e642968..2308c8ef0218 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -1940,6 +1940,11 @@ config COMPAT
1940 depends on MIPS32_COMPAT 1940 depends on MIPS32_COMPAT
1941 default y 1941 default y
1942 1942
1943config SYSVIPC_COMPAT
1944 bool
1945 depends on COMPAT && SYSVIPC
1946 default y
1947
1943config MIPS32_O32 1948config MIPS32_O32
1944 bool "Kernel support for o32 binaries" 1949 bool "Kernel support for o32 binaries"
1945 depends on MIPS32_COMPAT 1950 depends on MIPS32_COMPAT
diff --git a/arch/mips/kernel/linux32.c b/arch/mips/kernel/linux32.c
index 7a3ebbeba1f3..b061c9aa6302 100644
--- a/arch/mips/kernel/linux32.c
+++ b/arch/mips/kernel/linux32.c
@@ -382,531 +382,6 @@ asmlinkage int sys32_sched_rr_get_interval(compat_pid_t pid,
382 return ret; 382 return ret;
383} 383}
384 384
385struct msgbuf32 { s32 mtype; char mtext[1]; };
386
387struct ipc_perm32
388{
389 key_t key;
390 __compat_uid_t uid;
391 __compat_gid_t gid;
392 __compat_uid_t cuid;
393 __compat_gid_t cgid;
394 compat_mode_t mode;
395 unsigned short seq;
396};
397
398struct ipc64_perm32 {
399 key_t key;
400 __compat_uid_t uid;
401 __compat_gid_t gid;
402 __compat_uid_t cuid;
403 __compat_gid_t cgid;
404 compat_mode_t mode;
405 unsigned short seq;
406 unsigned short __pad1;
407 unsigned int __unused1;
408 unsigned int __unused2;
409};
410
411struct semid_ds32 {
412 struct ipc_perm32 sem_perm; /* permissions .. see ipc.h */
413 compat_time_t sem_otime; /* last semop time */
414 compat_time_t sem_ctime; /* last change time */
415 u32 sem_base; /* ptr to first semaphore in array */
416 u32 sem_pending; /* pending operations to be processed */
417 u32 sem_pending_last; /* last pending operation */
418 u32 undo; /* undo requests on this array */
419 unsigned short sem_nsems; /* no. of semaphores in array */
420};
421
422struct semid64_ds32 {
423 struct ipc64_perm32 sem_perm;
424 compat_time_t sem_otime;
425 compat_time_t sem_ctime;
426 unsigned int sem_nsems;
427 unsigned int __unused1;
428 unsigned int __unused2;
429};
430
431struct msqid_ds32
432{
433 struct ipc_perm32 msg_perm;
434 u32 msg_first;
435 u32 msg_last;
436 compat_time_t msg_stime;
437 compat_time_t msg_rtime;
438 compat_time_t msg_ctime;
439 u32 wwait;
440 u32 rwait;
441 unsigned short msg_cbytes;
442 unsigned short msg_qnum;
443 unsigned short msg_qbytes;
444 compat_ipc_pid_t msg_lspid;
445 compat_ipc_pid_t msg_lrpid;
446};
447
448struct msqid64_ds32 {
449 struct ipc64_perm32 msg_perm;
450 compat_time_t msg_stime;
451 unsigned int __unused1;
452 compat_time_t msg_rtime;
453 unsigned int __unused2;
454 compat_time_t msg_ctime;
455 unsigned int __unused3;
456 unsigned int msg_cbytes;
457 unsigned int msg_qnum;
458 unsigned int msg_qbytes;
459 compat_pid_t msg_lspid;
460 compat_pid_t msg_lrpid;
461 unsigned int __unused4;
462 unsigned int __unused5;
463};
464
465struct shmid_ds32 {
466 struct ipc_perm32 shm_perm;
467 int shm_segsz;
468 compat_time_t shm_atime;
469 compat_time_t shm_dtime;
470 compat_time_t shm_ctime;
471 compat_ipc_pid_t shm_cpid;
472 compat_ipc_pid_t shm_lpid;
473 unsigned short shm_nattch;
474};
475
476struct shmid64_ds32 {
477 struct ipc64_perm32 shm_perm;
478 compat_size_t shm_segsz;
479 compat_time_t shm_atime;
480 compat_time_t shm_dtime;
481 compat_time_t shm_ctime;
482 compat_pid_t shm_cpid;
483 compat_pid_t shm_lpid;
484 unsigned int shm_nattch;
485 unsigned int __unused1;
486 unsigned int __unused2;
487};
488
489struct ipc_kludge32 {
490 u32 msgp;
491 s32 msgtyp;
492};
493
494static int
495do_sys32_semctl(int first, int second, int third, void __user *uptr)
496{
497 union semun fourth;
498 u32 pad;
499 int err, err2;
500 struct semid64_ds s;
501 mm_segment_t old_fs;
502
503 if (!uptr)
504 return -EINVAL;
505 err = -EFAULT;
506 if (get_user (pad, (u32 __user *)uptr))
507 return err;
508 if ((third & ~IPC_64) == SETVAL)
509 fourth.val = (int)pad;
510 else
511 fourth.__pad = (void __user *)A(pad);
512 switch (third & ~IPC_64) {
513 case IPC_INFO:
514 case IPC_RMID:
515 case IPC_SET:
516 case SEM_INFO:
517 case GETVAL:
518 case GETPID:
519 case GETNCNT:
520 case GETZCNT:
521 case GETALL:
522 case SETVAL:
523 case SETALL:
524 err = sys_semctl (first, second, third, fourth);
525 break;
526
527 case IPC_STAT:
528 case SEM_STAT:
529 fourth.__pad = (struct semid64_ds __user *)&s;
530 old_fs = get_fs();
531 set_fs(KERNEL_DS);
532 err = sys_semctl(first, second, third | IPC_64, fourth);
533 set_fs(old_fs);
534
535 if (third & IPC_64) {
536 struct semid64_ds32 __user *usp64 = (struct semid64_ds32 __user *) A(pad);
537
538 if (!access_ok(VERIFY_WRITE, usp64, sizeof(*usp64))) {
539 err = -EFAULT;
540 break;
541 }
542 err2 = __put_user(s.sem_perm.key, &usp64->sem_perm.key);
543 err2 |= __put_user(s.sem_perm.uid, &usp64->sem_perm.uid);
544 err2 |= __put_user(s.sem_perm.gid, &usp64->sem_perm.gid);
545 err2 |= __put_user(s.sem_perm.cuid, &usp64->sem_perm.cuid);
546 err2 |= __put_user(s.sem_perm.cgid, &usp64->sem_perm.cgid);
547 err2 |= __put_user(s.sem_perm.mode, &usp64->sem_perm.mode);
548 err2 |= __put_user(s.sem_perm.seq, &usp64->sem_perm.seq);
549 err2 |= __put_user(s.sem_otime, &usp64->sem_otime);
550 err2 |= __put_user(s.sem_ctime, &usp64->sem_ctime);
551 err2 |= __put_user(s.sem_nsems, &usp64->sem_nsems);
552 } else {
553 struct semid_ds32 __user *usp32 = (struct semid_ds32 __user *) A(pad);
554
555 if (!access_ok(VERIFY_WRITE, usp32, sizeof(*usp32))) {
556 err = -EFAULT;
557 break;
558 }
559 err2 = __put_user(s.sem_perm.key, &usp32->sem_perm.key);
560 err2 |= __put_user(s.sem_perm.uid, &usp32->sem_perm.uid);
561 err2 |= __put_user(s.sem_perm.gid, &usp32->sem_perm.gid);
562 err2 |= __put_user(s.sem_perm.cuid, &usp32->sem_perm.cuid);
563 err2 |= __put_user(s.sem_perm.cgid, &usp32->sem_perm.cgid);
564 err2 |= __put_user(s.sem_perm.mode, &usp32->sem_perm.mode);
565 err2 |= __put_user(s.sem_perm.seq, &usp32->sem_perm.seq);
566 err2 |= __put_user(s.sem_otime, &usp32->sem_otime);
567 err2 |= __put_user(s.sem_ctime, &usp32->sem_ctime);
568 err2 |= __put_user(s.sem_nsems, &usp32->sem_nsems);
569 }
570 if (err2)
571 err = -EFAULT;
572 break;
573
574 default:
575 err = - EINVAL;
576 break;
577 }
578
579 return err;
580}
581
582static int
583do_sys32_msgsnd (int first, int second, int third, void __user *uptr)
584{
585 struct msgbuf32 __user *up = (struct msgbuf32 __user *)uptr;
586 struct msgbuf *p;
587 mm_segment_t old_fs;
588 int err;
589
590 if (second < 0)
591 return -EINVAL;
592 p = kmalloc (second + sizeof (struct msgbuf)
593 + 4, GFP_USER);
594 if (!p)
595 return -ENOMEM;
596 err = get_user (p->mtype, &up->mtype);
597 if (err)
598 goto out;
599 err |= __copy_from_user (p->mtext, &up->mtext, second);
600 if (err)
601 goto out;
602 old_fs = get_fs ();
603 set_fs (KERNEL_DS);
604 err = sys_msgsnd (first, (struct msgbuf __user *)p, second, third);
605 set_fs (old_fs);
606out:
607 kfree (p);
608
609 return err;
610}
611
612static int
613do_sys32_msgrcv (int first, int second, int msgtyp, int third,
614 int version, void __user *uptr)
615{
616 struct msgbuf32 __user *up;
617 struct msgbuf *p;
618 mm_segment_t old_fs;
619 int err;
620
621 if (!version) {
622 struct ipc_kludge32 __user *uipck = (struct ipc_kludge32 __user *)uptr;
623 struct ipc_kludge32 ipck;
624
625 err = -EINVAL;
626 if (!uptr)
627 goto out;
628 err = -EFAULT;
629 if (copy_from_user (&ipck, uipck, sizeof (struct ipc_kludge32)))
630 goto out;
631 uptr = (void __user *)AA(ipck.msgp);
632 msgtyp = ipck.msgtyp;
633 }
634
635 if (second < 0)
636 return -EINVAL;
637 err = -ENOMEM;
638 p = kmalloc (second + sizeof (struct msgbuf) + 4, GFP_USER);
639 if (!p)
640 goto out;
641 old_fs = get_fs ();
642 set_fs (KERNEL_DS);
643 err = sys_msgrcv (first, (struct msgbuf __user *)p, second + 4, msgtyp, third);
644 set_fs (old_fs);
645 if (err < 0)
646 goto free_then_out;
647 up = (struct msgbuf32 __user *)uptr;
648 if (put_user (p->mtype, &up->mtype) ||
649 __copy_to_user (&up->mtext, p->mtext, err))
650 err = -EFAULT;
651free_then_out:
652 kfree (p);
653out:
654 return err;
655}
656
657static int
658do_sys32_msgctl (int first, int second, void __user *uptr)
659{
660 int err = -EINVAL, err2;
661 struct msqid64_ds m;
662 struct msqid_ds32 __user *up32 = (struct msqid_ds32 __user *)uptr;
663 struct msqid64_ds32 __user *up64 = (struct msqid64_ds32 __user *)uptr;
664 mm_segment_t old_fs;
665
666 switch (second & ~IPC_64) {
667 case IPC_INFO:
668 case IPC_RMID:
669 case MSG_INFO:
670 err = sys_msgctl (first, second, (struct msqid_ds __user *)uptr);
671 break;
672
673 case IPC_SET:
674 if (second & IPC_64) {
675 if (!access_ok(VERIFY_READ, up64, sizeof(*up64))) {
676 err = -EFAULT;
677 break;
678 }
679 err = __get_user(m.msg_perm.uid, &up64->msg_perm.uid);
680 err |= __get_user(m.msg_perm.gid, &up64->msg_perm.gid);
681 err |= __get_user(m.msg_perm.mode, &up64->msg_perm.mode);
682 err |= __get_user(m.msg_qbytes, &up64->msg_qbytes);
683 } else {
684 if (!access_ok(VERIFY_READ, up32, sizeof(*up32))) {
685 err = -EFAULT;
686 break;
687 }
688 err = __get_user(m.msg_perm.uid, &up32->msg_perm.uid);
689 err |= __get_user(m.msg_perm.gid, &up32->msg_perm.gid);
690 err |= __get_user(m.msg_perm.mode, &up32->msg_perm.mode);
691 err |= __get_user(m.msg_qbytes, &up32->msg_qbytes);
692 }
693 if (err)
694 break;
695 old_fs = get_fs();
696 set_fs(KERNEL_DS);
697 err = sys_msgctl(first, second | IPC_64, (struct msqid_ds __user *)&m);
698 set_fs(old_fs);
699 break;
700
701 case IPC_STAT:
702 case MSG_STAT:
703 old_fs = get_fs();
704 set_fs(KERNEL_DS);
705 err = sys_msgctl(first, second | IPC_64, (struct msqid_ds __user *)&m);
706 set_fs(old_fs);
707 if (second & IPC_64) {
708 if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) {
709 err = -EFAULT;
710 break;
711 }
712 err2 = __put_user(m.msg_perm.key, &up64->msg_perm.key);
713 err2 |= __put_user(m.msg_perm.uid, &up64->msg_perm.uid);
714 err2 |= __put_user(m.msg_perm.gid, &up64->msg_perm.gid);
715 err2 |= __put_user(m.msg_perm.cuid, &up64->msg_perm.cuid);
716 err2 |= __put_user(m.msg_perm.cgid, &up64->msg_perm.cgid);
717 err2 |= __put_user(m.msg_perm.mode, &up64->msg_perm.mode);
718 err2 |= __put_user(m.msg_perm.seq, &up64->msg_perm.seq);
719 err2 |= __put_user(m.msg_stime, &up64->msg_stime);
720 err2 |= __put_user(m.msg_rtime, &up64->msg_rtime);
721 err2 |= __put_user(m.msg_ctime, &up64->msg_ctime);
722 err2 |= __put_user(m.msg_cbytes, &up64->msg_cbytes);
723 err2 |= __put_user(m.msg_qnum, &up64->msg_qnum);
724 err2 |= __put_user(m.msg_qbytes, &up64->msg_qbytes);
725 err2 |= __put_user(m.msg_lspid, &up64->msg_lspid);
726 err2 |= __put_user(m.msg_lrpid, &up64->msg_lrpid);
727 if (err2)
728 err = -EFAULT;
729 } else {
730 if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) {
731 err = -EFAULT;
732 break;
733 }
734 err2 = __put_user(m.msg_perm.key, &up32->msg_perm.key);
735 err2 |= __put_user(m.msg_perm.uid, &up32->msg_perm.uid);
736 err2 |= __put_user(m.msg_perm.gid, &up32->msg_perm.gid);
737 err2 |= __put_user(m.msg_perm.cuid, &up32->msg_perm.cuid);
738 err2 |= __put_user(m.msg_perm.cgid, &up32->msg_perm.cgid);
739 err2 |= __put_user(m.msg_perm.mode, &up32->msg_perm.mode);
740 err2 |= __put_user(m.msg_perm.seq, &up32->msg_perm.seq);
741 err2 |= __put_user(m.msg_stime, &up32->msg_stime);
742 err2 |= __put_user(m.msg_rtime, &up32->msg_rtime);
743 err2 |= __put_user(m.msg_ctime, &up32->msg_ctime);
744 err2 |= __put_user(m.msg_cbytes, &up32->msg_cbytes);
745 err2 |= __put_user(m.msg_qnum, &up32->msg_qnum);
746 err2 |= __put_user(m.msg_qbytes, &up32->msg_qbytes);
747 err2 |= __put_user(m.msg_lspid, &up32->msg_lspid);
748 err2 |= __put_user(m.msg_lrpid, &up32->msg_lrpid);
749 if (err2)
750 err = -EFAULT;
751 }
752 break;
753 }
754
755 return err;
756}
757
758static int
759do_sys32_shmat (int first, int second, int third, int version, void __user *uptr)
760{
761 unsigned long raddr;
762 u32 __user *uaddr = (u32 __user *)A((u32)third);
763 int err = -EINVAL;
764
765 if (version == 1)
766 return err;
767 err = do_shmat (first, uptr, second, &raddr);
768 if (err)
769 return err;
770 err = put_user (raddr, uaddr);
771 return err;
772}
773
774struct shm_info32 {
775 int used_ids;
776 u32 shm_tot, shm_rss, shm_swp;
777 u32 swap_attempts, swap_successes;
778};
779
780static int
781do_sys32_shmctl (int first, int second, void __user *uptr)
782{
783 struct shmid64_ds32 __user *up64 = (struct shmid64_ds32 __user *)uptr;
784 struct shmid_ds32 __user *up32 = (struct shmid_ds32 __user *)uptr;
785 struct shm_info32 __user *uip = (struct shm_info32 __user *)uptr;
786 int err = -EFAULT, err2;
787 struct shmid64_ds s64;
788 mm_segment_t old_fs;
789 struct shm_info si;
790 struct shmid_ds s;
791
792 switch (second & ~IPC_64) {
793 case IPC_INFO:
794 second = IPC_INFO; /* So that we don't have to translate it */
795 case IPC_RMID:
796 case SHM_LOCK:
797 case SHM_UNLOCK:
798 err = sys_shmctl(first, second, (struct shmid_ds __user *)uptr);
799 break;
800 case IPC_SET:
801 if (second & IPC_64) {
802 err = get_user(s.shm_perm.uid, &up64->shm_perm.uid);
803 err |= get_user(s.shm_perm.gid, &up64->shm_perm.gid);
804 err |= get_user(s.shm_perm.mode, &up64->shm_perm.mode);
805 } else {
806 err = get_user(s.shm_perm.uid, &up32->shm_perm.uid);
807 err |= get_user(s.shm_perm.gid, &up32->shm_perm.gid);
808 err |= get_user(s.shm_perm.mode, &up32->shm_perm.mode);
809 }
810 if (err)
811 break;
812 old_fs = get_fs();
813 set_fs(KERNEL_DS);
814 err = sys_shmctl(first, second & ~IPC_64, (struct shmid_ds __user *)&s);
815 set_fs(old_fs);
816 break;
817
818 case IPC_STAT:
819 case SHM_STAT:
820 old_fs = get_fs();
821 set_fs(KERNEL_DS);
822 err = sys_shmctl(first, second | IPC_64, (void __user *) &s64);
823 set_fs(old_fs);
824 if (err < 0)
825 break;
826 if (second & IPC_64) {
827 if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64))) {
828 err = -EFAULT;
829 break;
830 }
831 err2 = __put_user(s64.shm_perm.key, &up64->shm_perm.key);
832 err2 |= __put_user(s64.shm_perm.uid, &up64->shm_perm.uid);
833 err2 |= __put_user(s64.shm_perm.gid, &up64->shm_perm.gid);
834 err2 |= __put_user(s64.shm_perm.cuid, &up64->shm_perm.cuid);
835 err2 |= __put_user(s64.shm_perm.cgid, &up64->shm_perm.cgid);
836 err2 |= __put_user(s64.shm_perm.mode, &up64->shm_perm.mode);
837 err2 |= __put_user(s64.shm_perm.seq, &up64->shm_perm.seq);
838 err2 |= __put_user(s64.shm_atime, &up64->shm_atime);
839 err2 |= __put_user(s64.shm_dtime, &up64->shm_dtime);
840 err2 |= __put_user(s64.shm_ctime, &up64->shm_ctime);
841 err2 |= __put_user(s64.shm_segsz, &up64->shm_segsz);
842 err2 |= __put_user(s64.shm_nattch, &up64->shm_nattch);
843 err2 |= __put_user(s64.shm_cpid, &up64->shm_cpid);
844 err2 |= __put_user(s64.shm_lpid, &up64->shm_lpid);
845 } else {
846 if (!access_ok(VERIFY_WRITE, up32, sizeof(*up32))) {
847 err = -EFAULT;
848 break;
849 }
850 err2 = __put_user(s64.shm_perm.key, &up32->shm_perm.key);
851 err2 |= __put_user(s64.shm_perm.uid, &up32->shm_perm.uid);
852 err2 |= __put_user(s64.shm_perm.gid, &up32->shm_perm.gid);
853 err2 |= __put_user(s64.shm_perm.cuid, &up32->shm_perm.cuid);
854 err2 |= __put_user(s64.shm_perm.cgid, &up32->shm_perm.cgid);
855 err2 |= __put_user(s64.shm_perm.mode, &up32->shm_perm.mode);
856 err2 |= __put_user(s64.shm_perm.seq, &up32->shm_perm.seq);
857 err2 |= __put_user(s64.shm_atime, &up32->shm_atime);
858 err2 |= __put_user(s64.shm_dtime, &up32->shm_dtime);
859 err2 |= __put_user(s64.shm_ctime, &up32->shm_ctime);
860 err2 |= __put_user(s64.shm_segsz, &up32->shm_segsz);
861 err2 |= __put_user(s64.shm_nattch, &up32->shm_nattch);
862 err2 |= __put_user(s64.shm_cpid, &up32->shm_cpid);
863 err2 |= __put_user(s64.shm_lpid, &up32->shm_lpid);
864 }
865 if (err2)
866 err = -EFAULT;
867 break;
868
869 case SHM_INFO:
870 old_fs = get_fs();
871 set_fs(KERNEL_DS);
872 err = sys_shmctl(first, second, (void __user *)&si);
873 set_fs(old_fs);
874 if (err < 0)
875 break;
876 err2 = put_user(si.used_ids, &uip->used_ids);
877 err2 |= __put_user(si.shm_tot, &uip->shm_tot);
878 err2 |= __put_user(si.shm_rss, &uip->shm_rss);
879 err2 |= __put_user(si.shm_swp, &uip->shm_swp);
880 err2 |= __put_user(si.swap_attempts, &uip->swap_attempts);
881 err2 |= __put_user (si.swap_successes, &uip->swap_successes);
882 if (err2)
883 err = -EFAULT;
884 break;
885
886 default:
887 err = -EINVAL;
888 break;
889 }
890
891 return err;
892}
893
894static int sys32_semtimedop(int semid, struct sembuf __user *tsems, int nsems,
895 const struct compat_timespec __user *timeout32)
896{
897 struct compat_timespec t32;
898 struct timespec __user *t64 = compat_alloc_user_space(sizeof(*t64));
899
900 if (copy_from_user(&t32, timeout32, sizeof(t32)))
901 return -EFAULT;
902
903 if (put_user(t32.tv_sec, &t64->tv_sec) ||
904 put_user(t32.tv_nsec, &t64->tv_nsec))
905 return -EFAULT;
906
907 return sys_semtimedop(semid, tsems, nsems, t64);
908}
909
910asmlinkage long 385asmlinkage long
911sys32_ipc (u32 call, int first, int second, int third, u32 ptr, u32 fifth) 386sys32_ipc (u32 call, int first, int second, int third, u32 ptr, u32 fifth)
912{ 387{
@@ -918,48 +393,43 @@ sys32_ipc (u32 call, int first, int second, int third, u32 ptr, u32 fifth)
918 switch (call) { 393 switch (call) {
919 case SEMOP: 394 case SEMOP:
920 /* struct sembuf is the same on 32 and 64bit :)) */ 395 /* struct sembuf is the same on 32 and 64bit :)) */
921 err = sys_semtimedop (first, (struct sembuf __user *)AA(ptr), second, 396 err = sys_semtimedop(first, compat_ptr(ptr), second, NULL);
922 NULL);
923 break; 397 break;
924 case SEMTIMEDOP: 398 case SEMTIMEDOP:
925 err = sys32_semtimedop (first, (struct sembuf __user *)AA(ptr), second, 399 err = compat_sys_semtimedop(first, compat_ptr(ptr), second,
926 (const struct compat_timespec __user *)AA(fifth)); 400 compat_ptr(fifth));
927 break; 401 break;
928 case SEMGET: 402 case SEMGET:
929 err = sys_semget (first, second, third); 403 err = sys_semget(first, second, third);
930 break; 404 break;
931 case SEMCTL: 405 case SEMCTL:
932 err = do_sys32_semctl (first, second, third, 406 err = compat_sys_semctl(first, second, third, compat_ptr(ptr));
933 (void __user *)AA(ptr));
934 break; 407 break;
935
936 case MSGSND: 408 case MSGSND:
937 err = do_sys32_msgsnd (first, second, third, 409 err = compat_sys_msgsnd(first, second, third, compat_ptr(ptr));
938 (void __user *)AA(ptr));
939 break; 410 break;
940 case MSGRCV: 411 case MSGRCV:
941 err = do_sys32_msgrcv (first, second, fifth, third, 412 err = compat_sys_msgrcv(first, second, fifth, third,
942 version, (void __user *)AA(ptr)); 413 version, compat_ptr(ptr));
943 break; 414 break;
944 case MSGGET: 415 case MSGGET:
945 err = sys_msgget ((key_t) first, second); 416 err = sys_msgget((key_t) first, second);
946 break; 417 break;
947 case MSGCTL: 418 case MSGCTL:
948 err = do_sys32_msgctl (first, second, (void __user *)AA(ptr)); 419 err = compat_sys_msgctl(first, second, compat_ptr(ptr));
949 break; 420 break;
950
951 case SHMAT: 421 case SHMAT:
952 err = do_sys32_shmat (first, second, third, 422 err = compat_sys_shmat(first, second, third, version,
953 version, (void __user *)AA(ptr)); 423 compat_ptr(ptr));
954 break; 424 break;
955 case SHMDT: 425 case SHMDT:
956 err = sys_shmdt ((char __user *)A(ptr)); 426 err = sys_shmdt(compat_ptr(ptr));
957 break; 427 break;
958 case SHMGET: 428 case SHMGET:
959 err = sys_shmget (first, (unsigned)second, third); 429 err = sys_shmget(first, (unsigned)second, third);
960 break; 430 break;
961 case SHMCTL: 431 case SHMCTL:
962 err = do_sys32_shmctl (first, second, (void __user *)AA(ptr)); 432 err = compat_sys_shmctl(first, second, compat_ptr(ptr));
963 break; 433 break;
964 default: 434 default:
965 err = -EINVAL; 435 err = -EINVAL;
@@ -969,18 +439,16 @@ sys32_ipc (u32 call, int first, int second, int third, u32 ptr, u32 fifth)
969 return err; 439 return err;
970} 440}
971 441
972asmlinkage long sys32_shmat(int shmid, char __user *shmaddr, 442#ifdef CONFIG_MIPS32_N32
973 int shmflg, int32_t __user *addr) 443asmlinkage long sysn32_semctl(int semid, int semnum, int cmd, union semun arg)
974{ 444{
975 unsigned long raddr; 445 /* compat_sys_semctl expects a pointer to union semun */
976 int err; 446 u32 __user *uptr = compat_alloc_user_space(sizeof(u32));
977 447 if (put_user(ptr_to_compat(arg.__pad), uptr))
978 err = do_shmat(shmid, shmaddr, shmflg, &raddr); 448 return -EFAULT;
979 if (err) 449 return compat_sys_semctl(semid, semnum, cmd, uptr);
980 return err;
981
982 return put_user(raddr, addr);
983} 450}
451#endif
984 452
985struct sysctl_args32 453struct sysctl_args32
986{ 454{
diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S
index 5b18f265d75b..34567d81f940 100644
--- a/arch/mips/kernel/scall64-n32.S
+++ b/arch/mips/kernel/scall64-n32.S
@@ -149,8 +149,8 @@ EXPORT(sysn32_call_table)
149 PTR sys_mincore 149 PTR sys_mincore
150 PTR sys_madvise 150 PTR sys_madvise
151 PTR sys_shmget 151 PTR sys_shmget
152 PTR sys32_shmat 152 PTR sys_shmat
153 PTR sys_shmctl /* 6030 */ 153 PTR compat_sys_shmctl /* 6030 */
154 PTR sys_dup 154 PTR sys_dup
155 PTR sys_dup2 155 PTR sys_dup2
156 PTR sys_pause 156 PTR sys_pause
@@ -184,12 +184,12 @@ EXPORT(sysn32_call_table)
184 PTR sys32_newuname 184 PTR sys32_newuname
185 PTR sys_semget 185 PTR sys_semget
186 PTR sys_semop 186 PTR sys_semop
187 PTR sys_semctl 187 PTR sysn32_semctl
188 PTR sys_shmdt /* 6065 */ 188 PTR sys_shmdt /* 6065 */
189 PTR sys_msgget 189 PTR sys_msgget
190 PTR sys_msgsnd 190 PTR compat_sys_msgsnd
191 PTR sys_msgrcv 191 PTR compat_sys_msgrcv
192 PTR sys_msgctl 192 PTR compat_sys_msgctl
193 PTR compat_sys_fcntl /* 6070 */ 193 PTR compat_sys_fcntl /* 6070 */
194 PTR sys_flock 194 PTR sys_flock
195 PTR sys_fsync 195 PTR sys_fsync
@@ -335,7 +335,7 @@ EXPORT(sysn32_call_table)
335 PTR compat_sys_fcntl64 335 PTR compat_sys_fcntl64
336 PTR sys_set_tid_address 336 PTR sys_set_tid_address
337 PTR sys_restart_syscall 337 PTR sys_restart_syscall
338 PTR sys_semtimedop /* 6215 */ 338 PTR compat_sys_semtimedop /* 6215 */
339 PTR sys_fadvise64_64 339 PTR sys_fadvise64_64
340 PTR compat_sys_statfs64 340 PTR compat_sys_statfs64
341 PTR compat_sys_fstatfs64 341 PTR compat_sys_fstatfs64
diff --git a/include/asm-mips/compat.h b/include/asm-mips/compat.h
index 900f472fdd2b..55a0152feb08 100644
--- a/include/asm-mips/compat.h
+++ b/include/asm-mips/compat.h
@@ -32,6 +32,7 @@ typedef struct {
32 s32 val[2]; 32 s32 val[2];
33} compat_fsid_t; 33} compat_fsid_t;
34typedef s32 compat_timer_t; 34typedef s32 compat_timer_t;
35typedef s32 compat_key_t;
35 36
36typedef s32 compat_int_t; 37typedef s32 compat_int_t;
37typedef s32 compat_long_t; 38typedef s32 compat_long_t;
@@ -146,4 +147,71 @@ static inline void __user *compat_alloc_user_space(long len)
146 return (void __user *) (regs->regs[29] - len); 147 return (void __user *) (regs->regs[29] - len);
147} 148}
148 149
150struct compat_ipc64_perm {
151 compat_key_t key;
152 __compat_uid32_t uid;
153 __compat_gid32_t gid;
154 __compat_uid32_t cuid;
155 __compat_gid32_t cgid;
156 compat_mode_t mode;
157 unsigned short seq;
158 unsigned short __pad2;
159 compat_ulong_t __unused1;
160 compat_ulong_t __unused2;
161};
162
163struct compat_semid64_ds {
164 struct compat_ipc64_perm sem_perm;
165 compat_time_t sem_otime;
166 compat_time_t sem_ctime;
167 compat_ulong_t sem_nsems;
168 compat_ulong_t __unused1;
169 compat_ulong_t __unused2;
170};
171
172struct compat_msqid64_ds {
173 struct compat_ipc64_perm msg_perm;
174#ifndef CONFIG_CPU_LITTLE_ENDIAN
175 compat_ulong_t __unused1;
176#endif
177 compat_time_t msg_stime;
178#ifdef CONFIG_CPU_LITTLE_ENDIAN
179 compat_ulong_t __unused1;
180#endif
181#ifndef CONFIG_CPU_LITTLE_ENDIAN
182 compat_ulong_t __unused2;
183#endif
184 compat_time_t msg_rtime;
185#ifdef CONFIG_CPU_LITTLE_ENDIAN
186 compat_ulong_t __unused2;
187#endif
188#ifndef CONFIG_CPU_LITTLE_ENDIAN
189 compat_ulong_t __unused3;
190#endif
191 compat_time_t msg_ctime;
192#ifdef CONFIG_CPU_LITTLE_ENDIAN
193 compat_ulong_t __unused3;
194#endif
195 compat_ulong_t msg_cbytes;
196 compat_ulong_t msg_qnum;
197 compat_ulong_t msg_qbytes;
198 compat_pid_t msg_lspid;
199 compat_pid_t msg_lrpid;
200 compat_ulong_t __unused4;
201 compat_ulong_t __unused5;
202};
203
204struct compat_shmid64_ds {
205 struct compat_ipc64_perm shm_perm;
206 compat_size_t shm_segsz;
207 compat_time_t shm_atime;
208 compat_time_t shm_dtime;
209 compat_time_t shm_ctime;
210 compat_pid_t shm_cpid;
211 compat_pid_t shm_lpid;
212 compat_ulong_t shm_nattch;
213 compat_ulong_t __unused1;
214 compat_ulong_t __unused2;
215};
216
149#endif /* _ASM_COMPAT_H */ 217#endif /* _ASM_COMPAT_H */
generated by cgit v1.2.2 (git 2.25.0) at 2025-12-31 12:46:50 -0500