470
471 return (error);
472}
473
474#endif /* __i386__ */
475
476int
477linux_select(struct thread *td, struct linux_select_args *args)
478{
479 l_timeval ltv;
480 struct timeval tv0, tv1, utv, *tvp;
481 int error;
482
483#ifdef DEBUG
484 if (ldebug(select))
485 printf(ARGS(select, "%d, %p, %p, %p, %p"), args->nfds,
486 (void *)args->readfds, (void *)args->writefds,
487 (void *)args->exceptfds, (void *)args->timeout);
488#endif
489
490 /*
491 * Store current time for computation of the amount of
492 * time left.
493 */
494 if (args->timeout) {
495 if ((error = copyin(args->timeout, <v, sizeof(ltv))))
496 goto select_out;
497 utv.tv_sec = ltv.tv_sec;
498 utv.tv_usec = ltv.tv_usec;
499#ifdef DEBUG
500 if (ldebug(select))
501 printf(LMSG("incoming timeout (%jd/%ld)"),
502 (intmax_t)utv.tv_sec, utv.tv_usec);
503#endif
504
505 if (itimerfix(&utv)) {
506 /*
507 * The timeval was invalid. Convert it to something
508 * valid that will act as it does under Linux.
509 */
510 utv.tv_sec += utv.tv_usec / 1000000;
511 utv.tv_usec %= 1000000;
512 if (utv.tv_usec < 0) {
513 utv.tv_sec -= 1;
514 utv.tv_usec += 1000000;
515 }
516 if (utv.tv_sec < 0)
517 timevalclear(&utv);
518 }
519 microtime(&tv0);
520 tvp = &utv;
521 } else
522 tvp = NULL;
523
524 error = kern_select(td, args->nfds, args->readfds, args->writefds,
525 args->exceptfds, tvp, sizeof(l_int) * 8);
526
527#ifdef DEBUG
528 if (ldebug(select))
529 printf(LMSG("real select returns %d"), error);
530#endif
531 if (error)
532 goto select_out;
533
534 if (args->timeout) {
535 if (td->td_retval[0]) {
536 /*
537 * Compute how much time was left of the timeout,
538 * by subtracting the current time and the time
539 * before we started the call, and subtracting
540 * that result from the user-supplied value.
541 */
542 microtime(&tv1);
543 timevalsub(&tv1, &tv0);
544 timevalsub(&utv, &tv1);
545 if (utv.tv_sec < 0)
546 timevalclear(&utv);
547 } else
548 timevalclear(&utv);
549#ifdef DEBUG
550 if (ldebug(select))
551 printf(LMSG("outgoing timeout (%jd/%ld)"),
552 (intmax_t)utv.tv_sec, utv.tv_usec);
553#endif
554 ltv.tv_sec = utv.tv_sec;
555 ltv.tv_usec = utv.tv_usec;
556 if ((error = copyout(<v, args->timeout, sizeof(ltv))))
557 goto select_out;
558 }
559
560select_out:
561#ifdef DEBUG
562 if (ldebug(select))
563 printf(LMSG("select_out -> %d"), error);
564#endif
565 return (error);
566}
567
568int
569linux_mremap(struct thread *td, struct linux_mremap_args *args)
570{
571 struct munmap_args /* {
572 void *addr;
573 size_t len;
574 } */ bsd_args;
575 int error = 0;
576
577#ifdef DEBUG
578 if (ldebug(mremap))
579 printf(ARGS(mremap, "%p, %08lx, %08lx, %08lx"),
580 (void *)(uintptr_t)args->addr,
581 (unsigned long)args->old_len,
582 (unsigned long)args->new_len,
583 (unsigned long)args->flags);
584#endif
585
586 if (args->flags & ~(LINUX_MREMAP_FIXED | LINUX_MREMAP_MAYMOVE)) {
587 td->td_retval[0] = 0;
588 return (EINVAL);
589 }
590
591 /*
592 * Check for the page alignment.
593 * Linux defines PAGE_MASK to be FreeBSD ~PAGE_MASK.
594 */
595 if (args->addr & PAGE_MASK) {
596 td->td_retval[0] = 0;
597 return (EINVAL);
598 }
599
600 args->new_len = round_page(args->new_len);
601 args->old_len = round_page(args->old_len);
602
603 if (args->new_len > args->old_len) {
604 td->td_retval[0] = 0;
605 return (ENOMEM);
606 }
607
608 if (args->new_len < args->old_len) {
609 bsd_args.addr =
610 (caddr_t)((uintptr_t)args->addr + args->new_len);
611 bsd_args.len = args->old_len - args->new_len;
612 error = sys_munmap(td, &bsd_args);
613 }
614
615 td->td_retval[0] = error ? 0 : (uintptr_t)args->addr;
616 return (error);
617}
618
619#define LINUX_MS_ASYNC 0x0001
620#define LINUX_MS_INVALIDATE 0x0002
621#define LINUX_MS_SYNC 0x0004
622
623int
624linux_msync(struct thread *td, struct linux_msync_args *args)
625{
626 struct msync_args bsd_args;
627
628 bsd_args.addr = (caddr_t)(uintptr_t)args->addr;
629 bsd_args.len = (uintptr_t)args->len;
630 bsd_args.flags = args->fl & ~LINUX_MS_SYNC;
631
632 return (sys_msync(td, &bsd_args));
633}
634
635int
636linux_time(struct thread *td, struct linux_time_args *args)
637{
638 struct timeval tv;
639 l_time_t tm;
640 int error;
641
642#ifdef DEBUG
643 if (ldebug(time))
644 printf(ARGS(time, "*"));
645#endif
646
647 microtime(&tv);
648 tm = tv.tv_sec;
649 if (args->tm && (error = copyout(&tm, args->tm, sizeof(tm))))
650 return (error);
651 td->td_retval[0] = tm;
652 return (0);
653}
654
655struct l_times_argv {
656 l_clock_t tms_utime;
657 l_clock_t tms_stime;
658 l_clock_t tms_cutime;
659 l_clock_t tms_cstime;
660};
661
662
663/*
664 * Glibc versions prior to 2.2.1 always use hard-coded CLK_TCK value.
665 * Since 2.2.1 Glibc uses value exported from kernel via AT_CLKTCK
666 * auxiliary vector entry.
667 */
668#define CLK_TCK 100
669
670#define CONVOTCK(r) (r.tv_sec * CLK_TCK + r.tv_usec / (1000000 / CLK_TCK))
671#define CONVNTCK(r) (r.tv_sec * stclohz + r.tv_usec / (1000000 / stclohz))
672
673#define CONVTCK(r) (linux_kernver(td) >= LINUX_KERNVER_2004000 ? \
674 CONVNTCK(r) : CONVOTCK(r))
675
676int
677linux_times(struct thread *td, struct linux_times_args *args)
678{
679 struct timeval tv, utime, stime, cutime, cstime;
680 struct l_times_argv tms;
681 struct proc *p;
682 int error;
683
684#ifdef DEBUG
685 if (ldebug(times))
686 printf(ARGS(times, "*"));
687#endif
688
689 if (args->buf != NULL) {
690 p = td->td_proc;
691 PROC_LOCK(p);
692 PROC_SLOCK(p);
693 calcru(p, &utime, &stime);
694 PROC_SUNLOCK(p);
695 calccru(p, &cutime, &cstime);
696 PROC_UNLOCK(p);
697
698 tms.tms_utime = CONVTCK(utime);
699 tms.tms_stime = CONVTCK(stime);
700
701 tms.tms_cutime = CONVTCK(cutime);
702 tms.tms_cstime = CONVTCK(cstime);
703
704 if ((error = copyout(&tms, args->buf, sizeof(tms))))
705 return (error);
706 }
707
708 microuptime(&tv);
709 td->td_retval[0] = (int)CONVTCK(tv);
710 return (0);
711}
712
713int
714linux_newuname(struct thread *td, struct linux_newuname_args *args)
715{
716 struct l_new_utsname utsname;
717 char osname[LINUX_MAX_UTSNAME];
718 char osrelease[LINUX_MAX_UTSNAME];
719 char *p;
720
721#ifdef DEBUG
722 if (ldebug(newuname))
723 printf(ARGS(newuname, "*"));
724#endif
725
726 linux_get_osname(td, osname);
727 linux_get_osrelease(td, osrelease);
728
729 bzero(&utsname, sizeof(utsname));
730 strlcpy(utsname.sysname, osname, LINUX_MAX_UTSNAME);
731 getcredhostname(td->td_ucred, utsname.nodename, LINUX_MAX_UTSNAME);
732 getcreddomainname(td->td_ucred, utsname.domainname, LINUX_MAX_UTSNAME);
733 strlcpy(utsname.release, osrelease, LINUX_MAX_UTSNAME);
734 strlcpy(utsname.version, version, LINUX_MAX_UTSNAME);
735 for (p = utsname.version; *p != '\0'; ++p)
736 if (*p == '\n') {
737 *p = '\0';
738 break;
739 }
740 strlcpy(utsname.machine, linux_platform, LINUX_MAX_UTSNAME);
741
742 return (copyout(&utsname, args->buf, sizeof(utsname)));
743}
744
745#if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
746struct l_utimbuf {
747 l_time_t l_actime;
748 l_time_t l_modtime;
749};
750
751int
752linux_utime(struct thread *td, struct linux_utime_args *args)
753{
754 struct timeval tv[2], *tvp;
755 struct l_utimbuf lut;
756 char *fname;
757 int error;
758
759 LCONVPATHEXIST(td, args->fname, &fname);
760
761#ifdef DEBUG
762 if (ldebug(utime))
763 printf(ARGS(utime, "%s, *"), fname);
764#endif
765
766 if (args->times) {
767 if ((error = copyin(args->times, &lut, sizeof lut))) {
768 LFREEPATH(fname);
769 return (error);
770 }
771 tv[0].tv_sec = lut.l_actime;
772 tv[0].tv_usec = 0;
773 tv[1].tv_sec = lut.l_modtime;
774 tv[1].tv_usec = 0;
775 tvp = tv;
776 } else
777 tvp = NULL;
778
779 error = kern_utimes(td, fname, UIO_SYSSPACE, tvp, UIO_SYSSPACE);
780 LFREEPATH(fname);
781 return (error);
782}
783
784int
785linux_utimes(struct thread *td, struct linux_utimes_args *args)
786{
787 l_timeval ltv[2];
788 struct timeval tv[2], *tvp = NULL;
789 char *fname;
790 int error;
791
792 LCONVPATHEXIST(td, args->fname, &fname);
793
794#ifdef DEBUG
795 if (ldebug(utimes))
796 printf(ARGS(utimes, "%s, *"), fname);
797#endif
798
799 if (args->tptr != NULL) {
800 if ((error = copyin(args->tptr, ltv, sizeof ltv))) {
801 LFREEPATH(fname);
802 return (error);
803 }
804 tv[0].tv_sec = ltv[0].tv_sec;
805 tv[0].tv_usec = ltv[0].tv_usec;
806 tv[1].tv_sec = ltv[1].tv_sec;
807 tv[1].tv_usec = ltv[1].tv_usec;
808 tvp = tv;
809 }
810
811 error = kern_utimes(td, fname, UIO_SYSSPACE, tvp, UIO_SYSSPACE);
812 LFREEPATH(fname);
813 return (error);
814}
815
816int
817linux_futimesat(struct thread *td, struct linux_futimesat_args *args)
818{
819 l_timeval ltv[2];
820 struct timeval tv[2], *tvp = NULL;
821 char *fname;
822 int error, dfd;
823
824 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
825 LCONVPATHEXIST_AT(td, args->filename, &fname, dfd);
826
827#ifdef DEBUG
828 if (ldebug(futimesat))
829 printf(ARGS(futimesat, "%s, *"), fname);
830#endif
831
832 if (args->utimes != NULL) {
833 if ((error = copyin(args->utimes, ltv, sizeof ltv))) {
834 LFREEPATH(fname);
835 return (error);
836 }
837 tv[0].tv_sec = ltv[0].tv_sec;
838 tv[0].tv_usec = ltv[0].tv_usec;
839 tv[1].tv_sec = ltv[1].tv_sec;
840 tv[1].tv_usec = ltv[1].tv_usec;
841 tvp = tv;
842 }
843
844 error = kern_utimesat(td, dfd, fname, UIO_SYSSPACE, tvp, UIO_SYSSPACE);
845 LFREEPATH(fname);
846 return (error);
847}
848#endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
849
850int
851linux_common_wait(struct thread *td, int pid, int *status,
852 int options, struct rusage *ru)
853{
854 int error, tmpstat;
855
856 error = kern_wait(td, pid, &tmpstat, options, ru);
857 if (error)
858 return (error);
859
860 if (status) {
861 tmpstat &= 0xffff;
862 if (WIFSIGNALED(tmpstat))
863 tmpstat = (tmpstat & 0xffffff80) |
864 BSD_TO_LINUX_SIGNAL(WTERMSIG(tmpstat));
865 else if (WIFSTOPPED(tmpstat))
866 tmpstat = (tmpstat & 0xffff00ff) |
867 (BSD_TO_LINUX_SIGNAL(WSTOPSIG(tmpstat)) << 8);
868 error = copyout(&tmpstat, status, sizeof(int));
869 }
870
871 return (error);
872}
873
874int
875linux_waitpid(struct thread *td, struct linux_waitpid_args *args)
876{
877 int options;
878
879#ifdef DEBUG
880 if (ldebug(waitpid))
881 printf(ARGS(waitpid, "%d, %p, %d"),
882 args->pid, (void *)args->status, args->options);
883#endif
884 /*
885 * this is necessary because the test in kern_wait doesn't work
886 * because we mess with the options here
887 */
888 if (args->options & ~(WUNTRACED | WNOHANG | WCONTINUED | __WCLONE))
889 return (EINVAL);
890
891 options = (args->options & (WNOHANG | WUNTRACED));
892 /* WLINUXCLONE should be equal to __WCLONE, but we make sure */
893 if (args->options & __WCLONE)
894 options |= WLINUXCLONE;
895
896 return (linux_common_wait(td, args->pid, args->status, options, NULL));
897}
898
899
900int
901linux_mknod(struct thread *td, struct linux_mknod_args *args)
902{
903 char *path;
904 int error;
905
906 LCONVPATHCREAT(td, args->path, &path);
907
908#ifdef DEBUG
909 if (ldebug(mknod))
910 printf(ARGS(mknod, "%s, %d, %d"), path, args->mode, args->dev);
911#endif
912
913 switch (args->mode & S_IFMT) {
914 case S_IFIFO:
915 case S_IFSOCK:
916 error = kern_mkfifo(td, path, UIO_SYSSPACE, args->mode);
917 break;
918
919 case S_IFCHR:
920 case S_IFBLK:
921 error = kern_mknod(td, path, UIO_SYSSPACE, args->mode,
922 args->dev);
923 break;
924
925 case S_IFDIR:
926 error = EPERM;
927 break;
928
929 case 0:
930 args->mode |= S_IFREG;
931 /* FALLTHROUGH */
932 case S_IFREG:
933 error = kern_open(td, path, UIO_SYSSPACE,
934 O_WRONLY | O_CREAT | O_TRUNC, args->mode);
935 if (error == 0)
936 kern_close(td, td->td_retval[0]);
937 break;
938
939 default:
940 error = EINVAL;
941 break;
942 }
943 LFREEPATH(path);
944 return (error);
945}
946
947int
948linux_mknodat(struct thread *td, struct linux_mknodat_args *args)
949{
950 char *path;
951 int error, dfd;
952
953 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
954 LCONVPATHCREAT_AT(td, args->filename, &path, dfd);
955
956#ifdef DEBUG
957 if (ldebug(mknodat))
958 printf(ARGS(mknodat, "%s, %d, %d"), path, args->mode, args->dev);
959#endif
960
961 switch (args->mode & S_IFMT) {
962 case S_IFIFO:
963 case S_IFSOCK:
964 error = kern_mkfifoat(td, dfd, path, UIO_SYSSPACE, args->mode);
965 break;
966
967 case S_IFCHR:
968 case S_IFBLK:
969 error = kern_mknodat(td, dfd, path, UIO_SYSSPACE, args->mode,
970 args->dev);
971 break;
972
973 case S_IFDIR:
974 error = EPERM;
975 break;
976
977 case 0:
978 args->mode |= S_IFREG;
979 /* FALLTHROUGH */
980 case S_IFREG:
981 error = kern_openat(td, dfd, path, UIO_SYSSPACE,
982 O_WRONLY | O_CREAT | O_TRUNC, args->mode);
983 if (error == 0)
984 kern_close(td, td->td_retval[0]);
985 break;
986
987 default:
988 error = EINVAL;
989 break;
990 }
991 LFREEPATH(path);
992 return (error);
993}
994
995/*
996 * UGH! This is just about the dumbest idea I've ever heard!!
997 */
998int
999linux_personality(struct thread *td, struct linux_personality_args *args)
1000{
1001#ifdef DEBUG
1002 if (ldebug(personality))
1003 printf(ARGS(personality, "%lu"), (unsigned long)args->per);
1004#endif
1005 if (args->per != 0)
1006 return (EINVAL);
1007
1008 /* Yes Jim, it's still a Linux... */
1009 td->td_retval[0] = 0;
1010 return (0);
1011}
1012
1013struct l_itimerval {
1014 l_timeval it_interval;
1015 l_timeval it_value;
1016};
1017
1018#define B2L_ITIMERVAL(bip, lip) \
1019 (bip)->it_interval.tv_sec = (lip)->it_interval.tv_sec; \
1020 (bip)->it_interval.tv_usec = (lip)->it_interval.tv_usec; \
1021 (bip)->it_value.tv_sec = (lip)->it_value.tv_sec; \
1022 (bip)->it_value.tv_usec = (lip)->it_value.tv_usec;
1023
1024int
1025linux_setitimer(struct thread *td, struct linux_setitimer_args *uap)
1026{
1027 int error;
1028 struct l_itimerval ls;
1029 struct itimerval aitv, oitv;
1030
1031#ifdef DEBUG
1032 if (ldebug(setitimer))
1033 printf(ARGS(setitimer, "%p, %p"),
1034 (void *)uap->itv, (void *)uap->oitv);
1035#endif
1036
1037 if (uap->itv == NULL) {
1038 uap->itv = uap->oitv;
1039 return (linux_getitimer(td, (struct linux_getitimer_args *)uap));
1040 }
1041
1042 error = copyin(uap->itv, &ls, sizeof(ls));
1043 if (error != 0)
1044 return (error);
1045 B2L_ITIMERVAL(&aitv, &ls);
1046#ifdef DEBUG
1047 if (ldebug(setitimer)) {
1048 printf("setitimer: value: sec: %jd, usec: %ld\n",
1049 (intmax_t)aitv.it_value.tv_sec, aitv.it_value.tv_usec);
1050 printf("setitimer: interval: sec: %jd, usec: %ld\n",
1051 (intmax_t)aitv.it_interval.tv_sec, aitv.it_interval.tv_usec);
1052 }
1053#endif
1054 error = kern_setitimer(td, uap->which, &aitv, &oitv);
1055 if (error != 0 || uap->oitv == NULL)
1056 return (error);
1057 B2L_ITIMERVAL(&ls, &oitv);
1058
1059 return (copyout(&ls, uap->oitv, sizeof(ls)));
1060}
1061
1062int
1063linux_getitimer(struct thread *td, struct linux_getitimer_args *uap)
1064{
1065 int error;
1066 struct l_itimerval ls;
1067 struct itimerval aitv;
1068
1069#ifdef DEBUG
1070 if (ldebug(getitimer))
1071 printf(ARGS(getitimer, "%p"), (void *)uap->itv);
1072#endif
1073 error = kern_getitimer(td, uap->which, &aitv);
1074 if (error != 0)
1075 return (error);
1076 B2L_ITIMERVAL(&ls, &aitv);
1077 return (copyout(&ls, uap->itv, sizeof(ls)));
1078}
1079
1080int
1081linux_nice(struct thread *td, struct linux_nice_args *args)
1082{
1083 struct setpriority_args bsd_args;
1084
1085 bsd_args.which = PRIO_PROCESS;
1086 bsd_args.who = 0; /* current process */
1087 bsd_args.prio = args->inc;
1088 return (sys_setpriority(td, &bsd_args));
1089}
1090
1091int
1092linux_setgroups(struct thread *td, struct linux_setgroups_args *args)
1093{
1094 struct ucred *newcred, *oldcred;
1095 l_gid_t *linux_gidset;
1096 gid_t *bsd_gidset;
1097 int ngrp, error;
1098 struct proc *p;
1099
1100 ngrp = args->gidsetsize;
1101 if (ngrp < 0 || ngrp >= ngroups_max + 1)
1102 return (EINVAL);
1103 linux_gidset = malloc(ngrp * sizeof(*linux_gidset), M_TEMP, M_WAITOK);
1104 error = copyin(args->grouplist, linux_gidset, ngrp * sizeof(l_gid_t));
1105 if (error)
1106 goto out;
1107 newcred = crget();
1108 p = td->td_proc;
1109 PROC_LOCK(p);
1110 oldcred = crcopysafe(p, newcred);
1111
1112 /*
1113 * cr_groups[0] holds egid. Setting the whole set from
1114 * the supplied set will cause egid to be changed too.
1115 * Keep cr_groups[0] unchanged to prevent that.
1116 */
1117
1118 if ((error = priv_check_cred(oldcred, PRIV_CRED_SETGROUPS, 0)) != 0) {
1119 PROC_UNLOCK(p);
1120 crfree(newcred);
1121 goto out;
1122 }
1123
1124 if (ngrp > 0) {
1125 newcred->cr_ngroups = ngrp + 1;
1126
1127 bsd_gidset = newcred->cr_groups;
1128 ngrp--;
1129 while (ngrp >= 0) {
1130 bsd_gidset[ngrp + 1] = linux_gidset[ngrp];
1131 ngrp--;
1132 }
1133 } else
1134 newcred->cr_ngroups = 1;
1135
1136 setsugid(p);
1137 p->p_ucred = newcred;
1138 PROC_UNLOCK(p);
1139 crfree(oldcred);
1140 error = 0;
1141out:
1142 free(linux_gidset, M_TEMP);
1143 return (error);
1144}
1145
1146int
1147linux_getgroups(struct thread *td, struct linux_getgroups_args *args)
1148{
1149 struct ucred *cred;
1150 l_gid_t *linux_gidset;
1151 gid_t *bsd_gidset;
1152 int bsd_gidsetsz, ngrp, error;
1153
1154 cred = td->td_ucred;
1155 bsd_gidset = cred->cr_groups;
1156 bsd_gidsetsz = cred->cr_ngroups - 1;
1157
1158 /*
1159 * cr_groups[0] holds egid. Returning the whole set
1160 * here will cause a duplicate. Exclude cr_groups[0]
1161 * to prevent that.
1162 */
1163
1164 if ((ngrp = args->gidsetsize) == 0) {
1165 td->td_retval[0] = bsd_gidsetsz;
1166 return (0);
1167 }
1168
1169 if (ngrp < bsd_gidsetsz)
1170 return (EINVAL);
1171
1172 ngrp = 0;
1173 linux_gidset = malloc(bsd_gidsetsz * sizeof(*linux_gidset),
1174 M_TEMP, M_WAITOK);
1175 while (ngrp < bsd_gidsetsz) {
1176 linux_gidset[ngrp] = bsd_gidset[ngrp + 1];
1177 ngrp++;
1178 }
1179
1180 error = copyout(linux_gidset, args->grouplist, ngrp * sizeof(l_gid_t));
1181 free(linux_gidset, M_TEMP);
1182 if (error)
1183 return (error);
1184
1185 td->td_retval[0] = ngrp;
1186 return (0);
1187}
1188
1189int
1190linux_setrlimit(struct thread *td, struct linux_setrlimit_args *args)
1191{
1192 struct rlimit bsd_rlim;
1193 struct l_rlimit rlim;
1194 u_int which;
1195 int error;
1196
1197#ifdef DEBUG
1198 if (ldebug(setrlimit))
1199 printf(ARGS(setrlimit, "%d, %p"),
1200 args->resource, (void *)args->rlim);
1201#endif
1202
1203 if (args->resource >= LINUX_RLIM_NLIMITS)
1204 return (EINVAL);
1205
1206 which = linux_to_bsd_resource[args->resource];
1207 if (which == -1)
1208 return (EINVAL);
1209
1210 error = copyin(args->rlim, &rlim, sizeof(rlim));
1211 if (error)
1212 return (error);
1213
1214 bsd_rlim.rlim_cur = (rlim_t)rlim.rlim_cur;
1215 bsd_rlim.rlim_max = (rlim_t)rlim.rlim_max;
1216 return (kern_setrlimit(td, which, &bsd_rlim));
1217}
1218
1219int
1220linux_old_getrlimit(struct thread *td, struct linux_old_getrlimit_args *args)
1221{
1222 struct l_rlimit rlim;
1223 struct proc *p = td->td_proc;
1224 struct rlimit bsd_rlim;
1225 u_int which;
1226
1227#ifdef DEBUG
1228 if (ldebug(old_getrlimit))
1229 printf(ARGS(old_getrlimit, "%d, %p"),
1230 args->resource, (void *)args->rlim);
1231#endif
1232
1233 if (args->resource >= LINUX_RLIM_NLIMITS)
1234 return (EINVAL);
1235
1236 which = linux_to_bsd_resource[args->resource];
1237 if (which == -1)
1238 return (EINVAL);
1239
1240 PROC_LOCK(p);
1241 lim_rlimit(p, which, &bsd_rlim);
1242 PROC_UNLOCK(p);
1243
1244#ifdef COMPAT_LINUX32
1245 rlim.rlim_cur = (unsigned int)bsd_rlim.rlim_cur;
1246 if (rlim.rlim_cur == UINT_MAX)
1247 rlim.rlim_cur = INT_MAX;
1248 rlim.rlim_max = (unsigned int)bsd_rlim.rlim_max;
1249 if (rlim.rlim_max == UINT_MAX)
1250 rlim.rlim_max = INT_MAX;
1251#else
1252 rlim.rlim_cur = (unsigned long)bsd_rlim.rlim_cur;
1253 if (rlim.rlim_cur == ULONG_MAX)
1254 rlim.rlim_cur = LONG_MAX;
1255 rlim.rlim_max = (unsigned long)bsd_rlim.rlim_max;
1256 if (rlim.rlim_max == ULONG_MAX)
1257 rlim.rlim_max = LONG_MAX;
1258#endif
1259 return (copyout(&rlim, args->rlim, sizeof(rlim)));
1260}
1261
1262int
1263linux_getrlimit(struct thread *td, struct linux_getrlimit_args *args)
1264{
1265 struct l_rlimit rlim;
1266 struct proc *p = td->td_proc;
1267 struct rlimit bsd_rlim;
1268 u_int which;
1269
1270#ifdef DEBUG
1271 if (ldebug(getrlimit))
1272 printf(ARGS(getrlimit, "%d, %p"),
1273 args->resource, (void *)args->rlim);
1274#endif
1275
1276 if (args->resource >= LINUX_RLIM_NLIMITS)
1277 return (EINVAL);
1278
1279 which = linux_to_bsd_resource[args->resource];
1280 if (which == -1)
1281 return (EINVAL);
1282
1283 PROC_LOCK(p);
1284 lim_rlimit(p, which, &bsd_rlim);
1285 PROC_UNLOCK(p);
1286
1287 rlim.rlim_cur = (l_ulong)bsd_rlim.rlim_cur;
1288 rlim.rlim_max = (l_ulong)bsd_rlim.rlim_max;
1289 return (copyout(&rlim, args->rlim, sizeof(rlim)));
1290}
1291
1292int
1293linux_sched_setscheduler(struct thread *td,
1294 struct linux_sched_setscheduler_args *args)
1295{
1296 struct sched_setscheduler_args bsd;
1297
1298#ifdef DEBUG
1299 if (ldebug(sched_setscheduler))
1300 printf(ARGS(sched_setscheduler, "%d, %d, %p"),
1301 args->pid, args->policy, (const void *)args->param);
1302#endif
1303
1304 switch (args->policy) {
1305 case LINUX_SCHED_OTHER:
1306 bsd.policy = SCHED_OTHER;
1307 break;
1308 case LINUX_SCHED_FIFO:
1309 bsd.policy = SCHED_FIFO;
1310 break;
1311 case LINUX_SCHED_RR:
1312 bsd.policy = SCHED_RR;
1313 break;
1314 default:
1315 return (EINVAL);
1316 }
1317
1318 bsd.pid = args->pid;
1319 bsd.param = (struct sched_param *)args->param;
1320 return (sys_sched_setscheduler(td, &bsd));
1321}
1322
1323int
1324linux_sched_getscheduler(struct thread *td,
1325 struct linux_sched_getscheduler_args *args)
1326{
1327 struct sched_getscheduler_args bsd;
1328 int error;
1329
1330#ifdef DEBUG
1331 if (ldebug(sched_getscheduler))
1332 printf(ARGS(sched_getscheduler, "%d"), args->pid);
1333#endif
1334
1335 bsd.pid = args->pid;
1336 error = sys_sched_getscheduler(td, &bsd);
1337
1338 switch (td->td_retval[0]) {
1339 case SCHED_OTHER:
1340 td->td_retval[0] = LINUX_SCHED_OTHER;
1341 break;
1342 case SCHED_FIFO:
1343 td->td_retval[0] = LINUX_SCHED_FIFO;
1344 break;
1345 case SCHED_RR:
1346 td->td_retval[0] = LINUX_SCHED_RR;
1347 break;
1348 }
1349
1350 return (error);
1351}
1352
1353int
1354linux_sched_get_priority_max(struct thread *td,
1355 struct linux_sched_get_priority_max_args *args)
1356{
1357 struct sched_get_priority_max_args bsd;
1358
1359#ifdef DEBUG
1360 if (ldebug(sched_get_priority_max))
1361 printf(ARGS(sched_get_priority_max, "%d"), args->policy);
1362#endif
1363
1364 switch (args->policy) {
1365 case LINUX_SCHED_OTHER:
1366 bsd.policy = SCHED_OTHER;
1367 break;
1368 case LINUX_SCHED_FIFO:
1369 bsd.policy = SCHED_FIFO;
1370 break;
1371 case LINUX_SCHED_RR:
1372 bsd.policy = SCHED_RR;
1373 break;
1374 default:
1375 return (EINVAL);
1376 }
1377 return (sys_sched_get_priority_max(td, &bsd));
1378}
1379
1380int
1381linux_sched_get_priority_min(struct thread *td,
1382 struct linux_sched_get_priority_min_args *args)
1383{
1384 struct sched_get_priority_min_args bsd;
1385
1386#ifdef DEBUG
1387 if (ldebug(sched_get_priority_min))
1388 printf(ARGS(sched_get_priority_min, "%d"), args->policy);
1389#endif
1390
1391 switch (args->policy) {
1392 case LINUX_SCHED_OTHER:
1393 bsd.policy = SCHED_OTHER;
1394 break;
1395 case LINUX_SCHED_FIFO:
1396 bsd.policy = SCHED_FIFO;
1397 break;
1398 case LINUX_SCHED_RR:
1399 bsd.policy = SCHED_RR;
1400 break;
1401 default:
1402 return (EINVAL);
1403 }
1404 return (sys_sched_get_priority_min(td, &bsd));
1405}
1406
1407#define REBOOT_CAD_ON 0x89abcdef
1408#define REBOOT_CAD_OFF 0
1409#define REBOOT_HALT 0xcdef0123
1410#define REBOOT_RESTART 0x01234567
1411#define REBOOT_RESTART2 0xA1B2C3D4
1412#define REBOOT_POWEROFF 0x4321FEDC
1413#define REBOOT_MAGIC1 0xfee1dead
1414#define REBOOT_MAGIC2 0x28121969
1415#define REBOOT_MAGIC2A 0x05121996
1416#define REBOOT_MAGIC2B 0x16041998
1417
1418int
1419linux_reboot(struct thread *td, struct linux_reboot_args *args)
1420{
1421 struct reboot_args bsd_args;
1422
1423#ifdef DEBUG
1424 if (ldebug(reboot))
1425 printf(ARGS(reboot, "0x%x"), args->cmd);
1426#endif
1427
1428 if (args->magic1 != REBOOT_MAGIC1)
1429 return (EINVAL);
1430
1431 switch (args->magic2) {
1432 case REBOOT_MAGIC2:
1433 case REBOOT_MAGIC2A:
1434 case REBOOT_MAGIC2B:
1435 break;
1436 default:
1437 return (EINVAL);
1438 }
1439
1440 switch (args->cmd) {
1441 case REBOOT_CAD_ON:
1442 case REBOOT_CAD_OFF:
1443 return (priv_check(td, PRIV_REBOOT));
1444 case REBOOT_HALT:
1445 bsd_args.opt = RB_HALT;
1446 break;
1447 case REBOOT_RESTART:
1448 case REBOOT_RESTART2:
1449 bsd_args.opt = 0;
1450 break;
1451 case REBOOT_POWEROFF:
1452 bsd_args.opt = RB_POWEROFF;
1453 break;
1454 default:
1455 return (EINVAL);
1456 }
1457 return (sys_reboot(td, &bsd_args));
1458}
1459
1460
1461/*
1462 * The FreeBSD native getpid(2), getgid(2) and getuid(2) also modify
1463 * td->td_retval[1] when COMPAT_43 is defined. This clobbers registers that
1464 * are assumed to be preserved. The following lightweight syscalls fixes
1465 * this. See also linux_getgid16() and linux_getuid16() in linux_uid16.c
1466 *
1467 * linux_getpid() - MP SAFE
1468 * linux_getgid() - MP SAFE
1469 * linux_getuid() - MP SAFE
1470 */
1471
1472int
1473linux_getpid(struct thread *td, struct linux_getpid_args *args)
1474{
1475 struct linux_emuldata *em;
1476
1477#ifdef DEBUG
1478 if (ldebug(getpid))
1479 printf(ARGS(getpid, ""));
1480#endif
1481
1482 if (linux_use26(td)) {
1483 em = em_find(td->td_proc, EMUL_DONTLOCK);
1484 KASSERT(em != NULL, ("getpid: emuldata not found.\n"));
1485 td->td_retval[0] = em->shared->group_pid;
1486 } else {
1487 td->td_retval[0] = td->td_proc->p_pid;
1488 }
1489
1490 return (0);
1491}
1492
1493int
1494linux_gettid(struct thread *td, struct linux_gettid_args *args)
1495{
1496
1497#ifdef DEBUG
1498 if (ldebug(gettid))
1499 printf(ARGS(gettid, ""));
1500#endif
1501
1502 td->td_retval[0] = td->td_proc->p_pid;
1503 return (0);
1504}
1505
1506
1507int
1508linux_getppid(struct thread *td, struct linux_getppid_args *args)
1509{
1510 struct linux_emuldata *em;
1511 struct proc *p, *pp;
1512
1513#ifdef DEBUG
1514 if (ldebug(getppid))
1515 printf(ARGS(getppid, ""));
1516#endif
1517
1518 if (!linux_use26(td)) {
1519 PROC_LOCK(td->td_proc);
1520 td->td_retval[0] = td->td_proc->p_pptr->p_pid;
1521 PROC_UNLOCK(td->td_proc);
1522 return (0);
1523 }
1524
1525 em = em_find(td->td_proc, EMUL_DONTLOCK);
1526
1527 KASSERT(em != NULL, ("getppid: process emuldata not found.\n"));
1528
1529 /* find the group leader */
1530 p = pfind(em->shared->group_pid);
1531
1532 if (p == NULL) {
1533#ifdef DEBUG
1534 printf(LMSG("parent process not found.\n"));
1535#endif
1536 return (0);
1537 }
1538
1539 pp = p->p_pptr; /* switch to parent */
1540 PROC_LOCK(pp);
1541 PROC_UNLOCK(p);
1542
1543 /* if its also linux process */
1544 if (pp->p_sysent == &elf_linux_sysvec) {
1545 em = em_find(pp, EMUL_DONTLOCK);
1546 KASSERT(em != NULL, ("getppid: parent emuldata not found.\n"));
1547
1548 td->td_retval[0] = em->shared->group_pid;
1549 } else
1550 td->td_retval[0] = pp->p_pid;
1551
1552 PROC_UNLOCK(pp);
1553
1554 return (0);
1555}
1556
1557int
1558linux_getgid(struct thread *td, struct linux_getgid_args *args)
1559{
1560
1561#ifdef DEBUG
1562 if (ldebug(getgid))
1563 printf(ARGS(getgid, ""));
1564#endif
1565
1566 td->td_retval[0] = td->td_ucred->cr_rgid;
1567 return (0);
1568}
1569
1570int
1571linux_getuid(struct thread *td, struct linux_getuid_args *args)
1572{
1573
1574#ifdef DEBUG
1575 if (ldebug(getuid))
1576 printf(ARGS(getuid, ""));
1577#endif
1578
1579 td->td_retval[0] = td->td_ucred->cr_ruid;
1580 return (0);
1581}
1582
1583
1584int
1585linux_getsid(struct thread *td, struct linux_getsid_args *args)
1586{
1587 struct getsid_args bsd;
1588
1589#ifdef DEBUG
1590 if (ldebug(getsid))
1591 printf(ARGS(getsid, "%i"), args->pid);
1592#endif
1593
1594 bsd.pid = args->pid;
1595 return (sys_getsid(td, &bsd));
1596}
1597
1598int
1599linux_nosys(struct thread *td, struct nosys_args *ignore)
1600{
1601
1602 return (ENOSYS);
1603}
1604
1605int
1606linux_getpriority(struct thread *td, struct linux_getpriority_args *args)
1607{
1608 struct getpriority_args bsd_args;
1609 int error;
1610
1611#ifdef DEBUG
1612 if (ldebug(getpriority))
1613 printf(ARGS(getpriority, "%i, %i"), args->which, args->who);
1614#endif
1615
1616 bsd_args.which = args->which;
1617 bsd_args.who = args->who;
1618 error = sys_getpriority(td, &bsd_args);
1619 td->td_retval[0] = 20 - td->td_retval[0];
1620 return (error);
1621}
1622
1623int
1624linux_sethostname(struct thread *td, struct linux_sethostname_args *args)
1625{
1626 int name[2];
1627
1628#ifdef DEBUG
1629 if (ldebug(sethostname))
1630 printf(ARGS(sethostname, "*, %i"), args->len);
1631#endif
1632
1633 name[0] = CTL_KERN;
1634 name[1] = KERN_HOSTNAME;
1635 return (userland_sysctl(td, name, 2, 0, 0, 0, args->hostname,
1636 args->len, 0, 0));
1637}
1638
1639int
1640linux_setdomainname(struct thread *td, struct linux_setdomainname_args *args)
1641{
1642 int name[2];
1643
1644#ifdef DEBUG
1645 if (ldebug(setdomainname))
1646 printf(ARGS(setdomainname, "*, %i"), args->len);
1647#endif
1648
1649 name[0] = CTL_KERN;
1650 name[1] = KERN_NISDOMAINNAME;
1651 return (userland_sysctl(td, name, 2, 0, 0, 0, args->name,
1652 args->len, 0, 0));
1653}
1654
1655int
1656linux_exit_group(struct thread *td, struct linux_exit_group_args *args)
1657{
1658 struct linux_emuldata *em;
1659
1660#ifdef DEBUG
1661 if (ldebug(exit_group))
1662 printf(ARGS(exit_group, "%i"), args->error_code);
1663#endif
1664
1665 em = em_find(td->td_proc, EMUL_DONTLOCK);
1666 if (em->shared->refs > 1) {
1667 EMUL_SHARED_WLOCK(&emul_shared_lock);
1668 em->shared->flags |= EMUL_SHARED_HASXSTAT;
1669 em->shared->xstat = W_EXITCODE(args->error_code, 0);
1670 EMUL_SHARED_WUNLOCK(&emul_shared_lock);
1671 if (linux_use26(td))
1672 linux_kill_threads(td, SIGKILL);
1673 }
1674
1675 /*
1676 * XXX: we should send a signal to the parent if
1677 * SIGNAL_EXIT_GROUP is set. We ignore that (temporarily?)
1678 * as it doesnt occur often.
1679 */
1680 exit1(td, W_EXITCODE(args->error_code, 0));
1681
1682 return (0);
1683}
1684
1685#define _LINUX_CAPABILITY_VERSION 0x19980330
1686
1687struct l_user_cap_header {
1688 l_int version;
1689 l_int pid;
1690};
1691
1692struct l_user_cap_data {
1693 l_int effective;
1694 l_int permitted;
1695 l_int inheritable;
1696};
1697
1698int
1699linux_capget(struct thread *td, struct linux_capget_args *args)
1700{
1701 struct l_user_cap_header luch;
1702 struct l_user_cap_data lucd;
1703 int error;
1704
1705 if (args->hdrp == NULL)
1706 return (EFAULT);
1707
1708 error = copyin(args->hdrp, &luch, sizeof(luch));
1709 if (error != 0)
1710 return (error);
1711
1712 if (luch.version != _LINUX_CAPABILITY_VERSION) {
1713 luch.version = _LINUX_CAPABILITY_VERSION;
1714 error = copyout(&luch, args->hdrp, sizeof(luch));
1715 if (error)
1716 return (error);
1717 return (EINVAL);
1718 }
1719
1720 if (luch.pid)
1721 return (EPERM);
1722
1723 if (args->datap) {
1724 /*
1725 * The current implementation doesn't support setting
1726 * a capability (it's essentially a stub) so indicate
1727 * that no capabilities are currently set or available
1728 * to request.
1729 */
1730 bzero (&lucd, sizeof(lucd));
1731 error = copyout(&lucd, args->datap, sizeof(lucd));
1732 }
1733
1734 return (error);
1735}
1736
1737int
1738linux_capset(struct thread *td, struct linux_capset_args *args)
1739{
1740 struct l_user_cap_header luch;
1741 struct l_user_cap_data lucd;
1742 int error;
1743
1744 if (args->hdrp == NULL || args->datap == NULL)
1745 return (EFAULT);
1746
1747 error = copyin(args->hdrp, &luch, sizeof(luch));
1748 if (error != 0)
1749 return (error);
1750
1751 if (luch.version != _LINUX_CAPABILITY_VERSION) {
1752 luch.version = _LINUX_CAPABILITY_VERSION;
1753 error = copyout(&luch, args->hdrp, sizeof(luch));
1754 if (error)
1755 return (error);
1756 return (EINVAL);
1757 }
1758
1759 if (luch.pid)
1760 return (EPERM);
1761
1762 error = copyin(args->datap, &lucd, sizeof(lucd));
1763 if (error != 0)
1764 return (error);
1765
1766 /* We currently don't support setting any capabilities. */
1767 if (lucd.effective || lucd.permitted || lucd.inheritable) {
1768 linux_msg(td,
1769 "capset effective=0x%x, permitted=0x%x, "
1770 "inheritable=0x%x is not implemented",
1771 (int)lucd.effective, (int)lucd.permitted,
1772 (int)lucd.inheritable);
1773 return (EPERM);
1774 }
1775
1776 return (0);
1777}
1778
1779int
1780linux_prctl(struct thread *td, struct linux_prctl_args *args)
1781{
1782 int error = 0, max_size;
1783 struct proc *p = td->td_proc;
1784 char comm[LINUX_MAX_COMM_LEN];
1785 struct linux_emuldata *em;
1786 int pdeath_signal;
1787
1788#ifdef DEBUG
1789 if (ldebug(prctl))
1790 printf(ARGS(prctl, "%d, %d, %d, %d, %d"), args->option,
1791 args->arg2, args->arg3, args->arg4, args->arg5);
1792#endif
1793
1794 switch (args->option) {
1795 case LINUX_PR_SET_PDEATHSIG:
1796 if (!LINUX_SIG_VALID(args->arg2))
1797 return (EINVAL);
1798 em = em_find(p, EMUL_DOLOCK);
1799 KASSERT(em != NULL, ("prctl: emuldata not found.\n"));
1800 em->pdeath_signal = args->arg2;
1801 EMUL_UNLOCK(&emul_lock);
1802 break;
1803 case LINUX_PR_GET_PDEATHSIG:
1804 em = em_find(p, EMUL_DOLOCK);
1805 KASSERT(em != NULL, ("prctl: emuldata not found.\n"));
1806 pdeath_signal = em->pdeath_signal;
1807 EMUL_UNLOCK(&emul_lock);
1808 error = copyout(&pdeath_signal,
1809 (void *)(register_t)args->arg2,
1810 sizeof(pdeath_signal));
1811 break;
1812 case LINUX_PR_GET_KEEPCAPS:
1813 /*
1814 * Indicate that we always clear the effective and
1815 * permitted capability sets when the user id becomes
1816 * non-zero (actually the capability sets are simply
1817 * always zero in the current implementation).
1818 */
1819 td->td_retval[0] = 0;
1820 break;
1821 case LINUX_PR_SET_KEEPCAPS:
1822 /*
1823 * Ignore requests to keep the effective and permitted
1824 * capability sets when the user id becomes non-zero.
1825 */
1826 break;
1827 case LINUX_PR_SET_NAME:
1828 /*
1829 * To be on the safe side we need to make sure to not
1830 * overflow the size a linux program expects. We already
1831 * do this here in the copyin, so that we don't need to
1832 * check on copyout.
1833 */
1834 max_size = MIN(sizeof(comm), sizeof(p->p_comm));
1835 error = copyinstr((void *)(register_t)args->arg2, comm,
1836 max_size, NULL);
1837
1838 /* Linux silently truncates the name if it is too long. */
1839 if (error == ENAMETOOLONG) {
1840 /*
1841 * XXX: copyinstr() isn't documented to populate the
1842 * array completely, so do a copyin() to be on the
1843 * safe side. This should be changed in case
1844 * copyinstr() is changed to guarantee this.
1845 */
1846 error = copyin((void *)(register_t)args->arg2, comm,
1847 max_size - 1);
1848 comm[max_size - 1] = '\0';
1849 }
1850 if (error)
1851 return (error);
1852
1853 PROC_LOCK(p);
1854 strlcpy(p->p_comm, comm, sizeof(p->p_comm));
1855 PROC_UNLOCK(p);
1856 break;
1857 case LINUX_PR_GET_NAME:
1858 PROC_LOCK(p);
1859 strlcpy(comm, p->p_comm, sizeof(comm));
1860 PROC_UNLOCK(p);
1861 error = copyout(comm, (void *)(register_t)args->arg2,
1862 strlen(comm) + 1);
1863 break;
1864 default:
1865 error = EINVAL;
1866 break;
1867 }
1868
1869 return (error);
1870}
1871
1872/*
1873 * Get affinity of a process.
1874 */
1875int
1876linux_sched_getaffinity(struct thread *td,
1877 struct linux_sched_getaffinity_args *args)
1878{
1879 int error;
1880 struct cpuset_getaffinity_args cga;
1881
1882#ifdef DEBUG
1883 if (ldebug(sched_getaffinity))
1884 printf(ARGS(sched_getaffinity, "%d, %d, *"), args->pid,
1885 args->len);
1886#endif
1887 if (args->len < sizeof(cpuset_t))
1888 return (EINVAL);
1889
1890 cga.level = CPU_LEVEL_WHICH;
1891 cga.which = CPU_WHICH_PID;
1892 cga.id = args->pid;
1893 cga.cpusetsize = sizeof(cpuset_t);
1894 cga.mask = (cpuset_t *) args->user_mask_ptr;
1895
1896 if ((error = sys_cpuset_getaffinity(td, &cga)) == 0)
1897 td->td_retval[0] = sizeof(cpuset_t);
1898
1899 return (error);
1900}
1901
1902/*
1903 * Set affinity of a process.
1904 */
1905int
1906linux_sched_setaffinity(struct thread *td,
1907 struct linux_sched_setaffinity_args *args)
1908{
1909 struct cpuset_setaffinity_args csa;
1910
1911#ifdef DEBUG
1912 if (ldebug(sched_setaffinity))
1913 printf(ARGS(sched_setaffinity, "%d, %d, *"), args->pid,
1914 args->len);
1915#endif
1916 if (args->len < sizeof(cpuset_t))
1917 return (EINVAL);
1918
1919 csa.level = CPU_LEVEL_WHICH;
1920 csa.which = CPU_WHICH_PID;
1921 csa.id = args->pid;
1922 csa.cpusetsize = sizeof(cpuset_t);
1923 csa.mask = (cpuset_t *) args->user_mask_ptr;
1924
1925 return (sys_cpuset_setaffinity(td, &csa));
1926}
| 460
461 return (error);
462}
463
464#endif /* __i386__ */
465
466int
467linux_select(struct thread *td, struct linux_select_args *args)
468{
469 l_timeval ltv;
470 struct timeval tv0, tv1, utv, *tvp;
471 int error;
472
473#ifdef DEBUG
474 if (ldebug(select))
475 printf(ARGS(select, "%d, %p, %p, %p, %p"), args->nfds,
476 (void *)args->readfds, (void *)args->writefds,
477 (void *)args->exceptfds, (void *)args->timeout);
478#endif
479
480 /*
481 * Store current time for computation of the amount of
482 * time left.
483 */
484 if (args->timeout) {
485 if ((error = copyin(args->timeout, <v, sizeof(ltv))))
486 goto select_out;
487 utv.tv_sec = ltv.tv_sec;
488 utv.tv_usec = ltv.tv_usec;
489#ifdef DEBUG
490 if (ldebug(select))
491 printf(LMSG("incoming timeout (%jd/%ld)"),
492 (intmax_t)utv.tv_sec, utv.tv_usec);
493#endif
494
495 if (itimerfix(&utv)) {
496 /*
497 * The timeval was invalid. Convert it to something
498 * valid that will act as it does under Linux.
499 */
500 utv.tv_sec += utv.tv_usec / 1000000;
501 utv.tv_usec %= 1000000;
502 if (utv.tv_usec < 0) {
503 utv.tv_sec -= 1;
504 utv.tv_usec += 1000000;
505 }
506 if (utv.tv_sec < 0)
507 timevalclear(&utv);
508 }
509 microtime(&tv0);
510 tvp = &utv;
511 } else
512 tvp = NULL;
513
514 error = kern_select(td, args->nfds, args->readfds, args->writefds,
515 args->exceptfds, tvp, sizeof(l_int) * 8);
516
517#ifdef DEBUG
518 if (ldebug(select))
519 printf(LMSG("real select returns %d"), error);
520#endif
521 if (error)
522 goto select_out;
523
524 if (args->timeout) {
525 if (td->td_retval[0]) {
526 /*
527 * Compute how much time was left of the timeout,
528 * by subtracting the current time and the time
529 * before we started the call, and subtracting
530 * that result from the user-supplied value.
531 */
532 microtime(&tv1);
533 timevalsub(&tv1, &tv0);
534 timevalsub(&utv, &tv1);
535 if (utv.tv_sec < 0)
536 timevalclear(&utv);
537 } else
538 timevalclear(&utv);
539#ifdef DEBUG
540 if (ldebug(select))
541 printf(LMSG("outgoing timeout (%jd/%ld)"),
542 (intmax_t)utv.tv_sec, utv.tv_usec);
543#endif
544 ltv.tv_sec = utv.tv_sec;
545 ltv.tv_usec = utv.tv_usec;
546 if ((error = copyout(<v, args->timeout, sizeof(ltv))))
547 goto select_out;
548 }
549
550select_out:
551#ifdef DEBUG
552 if (ldebug(select))
553 printf(LMSG("select_out -> %d"), error);
554#endif
555 return (error);
556}
557
558int
559linux_mremap(struct thread *td, struct linux_mremap_args *args)
560{
561 struct munmap_args /* {
562 void *addr;
563 size_t len;
564 } */ bsd_args;
565 int error = 0;
566
567#ifdef DEBUG
568 if (ldebug(mremap))
569 printf(ARGS(mremap, "%p, %08lx, %08lx, %08lx"),
570 (void *)(uintptr_t)args->addr,
571 (unsigned long)args->old_len,
572 (unsigned long)args->new_len,
573 (unsigned long)args->flags);
574#endif
575
576 if (args->flags & ~(LINUX_MREMAP_FIXED | LINUX_MREMAP_MAYMOVE)) {
577 td->td_retval[0] = 0;
578 return (EINVAL);
579 }
580
581 /*
582 * Check for the page alignment.
583 * Linux defines PAGE_MASK to be FreeBSD ~PAGE_MASK.
584 */
585 if (args->addr & PAGE_MASK) {
586 td->td_retval[0] = 0;
587 return (EINVAL);
588 }
589
590 args->new_len = round_page(args->new_len);
591 args->old_len = round_page(args->old_len);
592
593 if (args->new_len > args->old_len) {
594 td->td_retval[0] = 0;
595 return (ENOMEM);
596 }
597
598 if (args->new_len < args->old_len) {
599 bsd_args.addr =
600 (caddr_t)((uintptr_t)args->addr + args->new_len);
601 bsd_args.len = args->old_len - args->new_len;
602 error = sys_munmap(td, &bsd_args);
603 }
604
605 td->td_retval[0] = error ? 0 : (uintptr_t)args->addr;
606 return (error);
607}
608
609#define LINUX_MS_ASYNC 0x0001
610#define LINUX_MS_INVALIDATE 0x0002
611#define LINUX_MS_SYNC 0x0004
612
613int
614linux_msync(struct thread *td, struct linux_msync_args *args)
615{
616 struct msync_args bsd_args;
617
618 bsd_args.addr = (caddr_t)(uintptr_t)args->addr;
619 bsd_args.len = (uintptr_t)args->len;
620 bsd_args.flags = args->fl & ~LINUX_MS_SYNC;
621
622 return (sys_msync(td, &bsd_args));
623}
624
625int
626linux_time(struct thread *td, struct linux_time_args *args)
627{
628 struct timeval tv;
629 l_time_t tm;
630 int error;
631
632#ifdef DEBUG
633 if (ldebug(time))
634 printf(ARGS(time, "*"));
635#endif
636
637 microtime(&tv);
638 tm = tv.tv_sec;
639 if (args->tm && (error = copyout(&tm, args->tm, sizeof(tm))))
640 return (error);
641 td->td_retval[0] = tm;
642 return (0);
643}
644
645struct l_times_argv {
646 l_clock_t tms_utime;
647 l_clock_t tms_stime;
648 l_clock_t tms_cutime;
649 l_clock_t tms_cstime;
650};
651
652
653/*
654 * Glibc versions prior to 2.2.1 always use hard-coded CLK_TCK value.
655 * Since 2.2.1 Glibc uses value exported from kernel via AT_CLKTCK
656 * auxiliary vector entry.
657 */
658#define CLK_TCK 100
659
660#define CONVOTCK(r) (r.tv_sec * CLK_TCK + r.tv_usec / (1000000 / CLK_TCK))
661#define CONVNTCK(r) (r.tv_sec * stclohz + r.tv_usec / (1000000 / stclohz))
662
663#define CONVTCK(r) (linux_kernver(td) >= LINUX_KERNVER_2004000 ? \
664 CONVNTCK(r) : CONVOTCK(r))
665
666int
667linux_times(struct thread *td, struct linux_times_args *args)
668{
669 struct timeval tv, utime, stime, cutime, cstime;
670 struct l_times_argv tms;
671 struct proc *p;
672 int error;
673
674#ifdef DEBUG
675 if (ldebug(times))
676 printf(ARGS(times, "*"));
677#endif
678
679 if (args->buf != NULL) {
680 p = td->td_proc;
681 PROC_LOCK(p);
682 PROC_SLOCK(p);
683 calcru(p, &utime, &stime);
684 PROC_SUNLOCK(p);
685 calccru(p, &cutime, &cstime);
686 PROC_UNLOCK(p);
687
688 tms.tms_utime = CONVTCK(utime);
689 tms.tms_stime = CONVTCK(stime);
690
691 tms.tms_cutime = CONVTCK(cutime);
692 tms.tms_cstime = CONVTCK(cstime);
693
694 if ((error = copyout(&tms, args->buf, sizeof(tms))))
695 return (error);
696 }
697
698 microuptime(&tv);
699 td->td_retval[0] = (int)CONVTCK(tv);
700 return (0);
701}
702
703int
704linux_newuname(struct thread *td, struct linux_newuname_args *args)
705{
706 struct l_new_utsname utsname;
707 char osname[LINUX_MAX_UTSNAME];
708 char osrelease[LINUX_MAX_UTSNAME];
709 char *p;
710
711#ifdef DEBUG
712 if (ldebug(newuname))
713 printf(ARGS(newuname, "*"));
714#endif
715
716 linux_get_osname(td, osname);
717 linux_get_osrelease(td, osrelease);
718
719 bzero(&utsname, sizeof(utsname));
720 strlcpy(utsname.sysname, osname, LINUX_MAX_UTSNAME);
721 getcredhostname(td->td_ucred, utsname.nodename, LINUX_MAX_UTSNAME);
722 getcreddomainname(td->td_ucred, utsname.domainname, LINUX_MAX_UTSNAME);
723 strlcpy(utsname.release, osrelease, LINUX_MAX_UTSNAME);
724 strlcpy(utsname.version, version, LINUX_MAX_UTSNAME);
725 for (p = utsname.version; *p != '\0'; ++p)
726 if (*p == '\n') {
727 *p = '\0';
728 break;
729 }
730 strlcpy(utsname.machine, linux_platform, LINUX_MAX_UTSNAME);
731
732 return (copyout(&utsname, args->buf, sizeof(utsname)));
733}
734
735#if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
736struct l_utimbuf {
737 l_time_t l_actime;
738 l_time_t l_modtime;
739};
740
741int
742linux_utime(struct thread *td, struct linux_utime_args *args)
743{
744 struct timeval tv[2], *tvp;
745 struct l_utimbuf lut;
746 char *fname;
747 int error;
748
749 LCONVPATHEXIST(td, args->fname, &fname);
750
751#ifdef DEBUG
752 if (ldebug(utime))
753 printf(ARGS(utime, "%s, *"), fname);
754#endif
755
756 if (args->times) {
757 if ((error = copyin(args->times, &lut, sizeof lut))) {
758 LFREEPATH(fname);
759 return (error);
760 }
761 tv[0].tv_sec = lut.l_actime;
762 tv[0].tv_usec = 0;
763 tv[1].tv_sec = lut.l_modtime;
764 tv[1].tv_usec = 0;
765 tvp = tv;
766 } else
767 tvp = NULL;
768
769 error = kern_utimes(td, fname, UIO_SYSSPACE, tvp, UIO_SYSSPACE);
770 LFREEPATH(fname);
771 return (error);
772}
773
774int
775linux_utimes(struct thread *td, struct linux_utimes_args *args)
776{
777 l_timeval ltv[2];
778 struct timeval tv[2], *tvp = NULL;
779 char *fname;
780 int error;
781
782 LCONVPATHEXIST(td, args->fname, &fname);
783
784#ifdef DEBUG
785 if (ldebug(utimes))
786 printf(ARGS(utimes, "%s, *"), fname);
787#endif
788
789 if (args->tptr != NULL) {
790 if ((error = copyin(args->tptr, ltv, sizeof ltv))) {
791 LFREEPATH(fname);
792 return (error);
793 }
794 tv[0].tv_sec = ltv[0].tv_sec;
795 tv[0].tv_usec = ltv[0].tv_usec;
796 tv[1].tv_sec = ltv[1].tv_sec;
797 tv[1].tv_usec = ltv[1].tv_usec;
798 tvp = tv;
799 }
800
801 error = kern_utimes(td, fname, UIO_SYSSPACE, tvp, UIO_SYSSPACE);
802 LFREEPATH(fname);
803 return (error);
804}
805
806int
807linux_futimesat(struct thread *td, struct linux_futimesat_args *args)
808{
809 l_timeval ltv[2];
810 struct timeval tv[2], *tvp = NULL;
811 char *fname;
812 int error, dfd;
813
814 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
815 LCONVPATHEXIST_AT(td, args->filename, &fname, dfd);
816
817#ifdef DEBUG
818 if (ldebug(futimesat))
819 printf(ARGS(futimesat, "%s, *"), fname);
820#endif
821
822 if (args->utimes != NULL) {
823 if ((error = copyin(args->utimes, ltv, sizeof ltv))) {
824 LFREEPATH(fname);
825 return (error);
826 }
827 tv[0].tv_sec = ltv[0].tv_sec;
828 tv[0].tv_usec = ltv[0].tv_usec;
829 tv[1].tv_sec = ltv[1].tv_sec;
830 tv[1].tv_usec = ltv[1].tv_usec;
831 tvp = tv;
832 }
833
834 error = kern_utimesat(td, dfd, fname, UIO_SYSSPACE, tvp, UIO_SYSSPACE);
835 LFREEPATH(fname);
836 return (error);
837}
838#endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
839
840int
841linux_common_wait(struct thread *td, int pid, int *status,
842 int options, struct rusage *ru)
843{
844 int error, tmpstat;
845
846 error = kern_wait(td, pid, &tmpstat, options, ru);
847 if (error)
848 return (error);
849
850 if (status) {
851 tmpstat &= 0xffff;
852 if (WIFSIGNALED(tmpstat))
853 tmpstat = (tmpstat & 0xffffff80) |
854 BSD_TO_LINUX_SIGNAL(WTERMSIG(tmpstat));
855 else if (WIFSTOPPED(tmpstat))
856 tmpstat = (tmpstat & 0xffff00ff) |
857 (BSD_TO_LINUX_SIGNAL(WSTOPSIG(tmpstat)) << 8);
858 error = copyout(&tmpstat, status, sizeof(int));
859 }
860
861 return (error);
862}
863
864int
865linux_waitpid(struct thread *td, struct linux_waitpid_args *args)
866{
867 int options;
868
869#ifdef DEBUG
870 if (ldebug(waitpid))
871 printf(ARGS(waitpid, "%d, %p, %d"),
872 args->pid, (void *)args->status, args->options);
873#endif
874 /*
875 * this is necessary because the test in kern_wait doesn't work
876 * because we mess with the options here
877 */
878 if (args->options & ~(WUNTRACED | WNOHANG | WCONTINUED | __WCLONE))
879 return (EINVAL);
880
881 options = (args->options & (WNOHANG | WUNTRACED));
882 /* WLINUXCLONE should be equal to __WCLONE, but we make sure */
883 if (args->options & __WCLONE)
884 options |= WLINUXCLONE;
885
886 return (linux_common_wait(td, args->pid, args->status, options, NULL));
887}
888
889
890int
891linux_mknod(struct thread *td, struct linux_mknod_args *args)
892{
893 char *path;
894 int error;
895
896 LCONVPATHCREAT(td, args->path, &path);
897
898#ifdef DEBUG
899 if (ldebug(mknod))
900 printf(ARGS(mknod, "%s, %d, %d"), path, args->mode, args->dev);
901#endif
902
903 switch (args->mode & S_IFMT) {
904 case S_IFIFO:
905 case S_IFSOCK:
906 error = kern_mkfifo(td, path, UIO_SYSSPACE, args->mode);
907 break;
908
909 case S_IFCHR:
910 case S_IFBLK:
911 error = kern_mknod(td, path, UIO_SYSSPACE, args->mode,
912 args->dev);
913 break;
914
915 case S_IFDIR:
916 error = EPERM;
917 break;
918
919 case 0:
920 args->mode |= S_IFREG;
921 /* FALLTHROUGH */
922 case S_IFREG:
923 error = kern_open(td, path, UIO_SYSSPACE,
924 O_WRONLY | O_CREAT | O_TRUNC, args->mode);
925 if (error == 0)
926 kern_close(td, td->td_retval[0]);
927 break;
928
929 default:
930 error = EINVAL;
931 break;
932 }
933 LFREEPATH(path);
934 return (error);
935}
936
937int
938linux_mknodat(struct thread *td, struct linux_mknodat_args *args)
939{
940 char *path;
941 int error, dfd;
942
943 dfd = (args->dfd == LINUX_AT_FDCWD) ? AT_FDCWD : args->dfd;
944 LCONVPATHCREAT_AT(td, args->filename, &path, dfd);
945
946#ifdef DEBUG
947 if (ldebug(mknodat))
948 printf(ARGS(mknodat, "%s, %d, %d"), path, args->mode, args->dev);
949#endif
950
951 switch (args->mode & S_IFMT) {
952 case S_IFIFO:
953 case S_IFSOCK:
954 error = kern_mkfifoat(td, dfd, path, UIO_SYSSPACE, args->mode);
955 break;
956
957 case S_IFCHR:
958 case S_IFBLK:
959 error = kern_mknodat(td, dfd, path, UIO_SYSSPACE, args->mode,
960 args->dev);
961 break;
962
963 case S_IFDIR:
964 error = EPERM;
965 break;
966
967 case 0:
968 args->mode |= S_IFREG;
969 /* FALLTHROUGH */
970 case S_IFREG:
971 error = kern_openat(td, dfd, path, UIO_SYSSPACE,
972 O_WRONLY | O_CREAT | O_TRUNC, args->mode);
973 if (error == 0)
974 kern_close(td, td->td_retval[0]);
975 break;
976
977 default:
978 error = EINVAL;
979 break;
980 }
981 LFREEPATH(path);
982 return (error);
983}
984
985/*
986 * UGH! This is just about the dumbest idea I've ever heard!!
987 */
988int
989linux_personality(struct thread *td, struct linux_personality_args *args)
990{
991#ifdef DEBUG
992 if (ldebug(personality))
993 printf(ARGS(personality, "%lu"), (unsigned long)args->per);
994#endif
995 if (args->per != 0)
996 return (EINVAL);
997
998 /* Yes Jim, it's still a Linux... */
999 td->td_retval[0] = 0;
1000 return (0);
1001}
1002
1003struct l_itimerval {
1004 l_timeval it_interval;
1005 l_timeval it_value;
1006};
1007
1008#define B2L_ITIMERVAL(bip, lip) \
1009 (bip)->it_interval.tv_sec = (lip)->it_interval.tv_sec; \
1010 (bip)->it_interval.tv_usec = (lip)->it_interval.tv_usec; \
1011 (bip)->it_value.tv_sec = (lip)->it_value.tv_sec; \
1012 (bip)->it_value.tv_usec = (lip)->it_value.tv_usec;
1013
1014int
1015linux_setitimer(struct thread *td, struct linux_setitimer_args *uap)
1016{
1017 int error;
1018 struct l_itimerval ls;
1019 struct itimerval aitv, oitv;
1020
1021#ifdef DEBUG
1022 if (ldebug(setitimer))
1023 printf(ARGS(setitimer, "%p, %p"),
1024 (void *)uap->itv, (void *)uap->oitv);
1025#endif
1026
1027 if (uap->itv == NULL) {
1028 uap->itv = uap->oitv;
1029 return (linux_getitimer(td, (struct linux_getitimer_args *)uap));
1030 }
1031
1032 error = copyin(uap->itv, &ls, sizeof(ls));
1033 if (error != 0)
1034 return (error);
1035 B2L_ITIMERVAL(&aitv, &ls);
1036#ifdef DEBUG
1037 if (ldebug(setitimer)) {
1038 printf("setitimer: value: sec: %jd, usec: %ld\n",
1039 (intmax_t)aitv.it_value.tv_sec, aitv.it_value.tv_usec);
1040 printf("setitimer: interval: sec: %jd, usec: %ld\n",
1041 (intmax_t)aitv.it_interval.tv_sec, aitv.it_interval.tv_usec);
1042 }
1043#endif
1044 error = kern_setitimer(td, uap->which, &aitv, &oitv);
1045 if (error != 0 || uap->oitv == NULL)
1046 return (error);
1047 B2L_ITIMERVAL(&ls, &oitv);
1048
1049 return (copyout(&ls, uap->oitv, sizeof(ls)));
1050}
1051
1052int
1053linux_getitimer(struct thread *td, struct linux_getitimer_args *uap)
1054{
1055 int error;
1056 struct l_itimerval ls;
1057 struct itimerval aitv;
1058
1059#ifdef DEBUG
1060 if (ldebug(getitimer))
1061 printf(ARGS(getitimer, "%p"), (void *)uap->itv);
1062#endif
1063 error = kern_getitimer(td, uap->which, &aitv);
1064 if (error != 0)
1065 return (error);
1066 B2L_ITIMERVAL(&ls, &aitv);
1067 return (copyout(&ls, uap->itv, sizeof(ls)));
1068}
1069
1070int
1071linux_nice(struct thread *td, struct linux_nice_args *args)
1072{
1073 struct setpriority_args bsd_args;
1074
1075 bsd_args.which = PRIO_PROCESS;
1076 bsd_args.who = 0; /* current process */
1077 bsd_args.prio = args->inc;
1078 return (sys_setpriority(td, &bsd_args));
1079}
1080
1081int
1082linux_setgroups(struct thread *td, struct linux_setgroups_args *args)
1083{
1084 struct ucred *newcred, *oldcred;
1085 l_gid_t *linux_gidset;
1086 gid_t *bsd_gidset;
1087 int ngrp, error;
1088 struct proc *p;
1089
1090 ngrp = args->gidsetsize;
1091 if (ngrp < 0 || ngrp >= ngroups_max + 1)
1092 return (EINVAL);
1093 linux_gidset = malloc(ngrp * sizeof(*linux_gidset), M_TEMP, M_WAITOK);
1094 error = copyin(args->grouplist, linux_gidset, ngrp * sizeof(l_gid_t));
1095 if (error)
1096 goto out;
1097 newcred = crget();
1098 p = td->td_proc;
1099 PROC_LOCK(p);
1100 oldcred = crcopysafe(p, newcred);
1101
1102 /*
1103 * cr_groups[0] holds egid. Setting the whole set from
1104 * the supplied set will cause egid to be changed too.
1105 * Keep cr_groups[0] unchanged to prevent that.
1106 */
1107
1108 if ((error = priv_check_cred(oldcred, PRIV_CRED_SETGROUPS, 0)) != 0) {
1109 PROC_UNLOCK(p);
1110 crfree(newcred);
1111 goto out;
1112 }
1113
1114 if (ngrp > 0) {
1115 newcred->cr_ngroups = ngrp + 1;
1116
1117 bsd_gidset = newcred->cr_groups;
1118 ngrp--;
1119 while (ngrp >= 0) {
1120 bsd_gidset[ngrp + 1] = linux_gidset[ngrp];
1121 ngrp--;
1122 }
1123 } else
1124 newcred->cr_ngroups = 1;
1125
1126 setsugid(p);
1127 p->p_ucred = newcred;
1128 PROC_UNLOCK(p);
1129 crfree(oldcred);
1130 error = 0;
1131out:
1132 free(linux_gidset, M_TEMP);
1133 return (error);
1134}
1135
1136int
1137linux_getgroups(struct thread *td, struct linux_getgroups_args *args)
1138{
1139 struct ucred *cred;
1140 l_gid_t *linux_gidset;
1141 gid_t *bsd_gidset;
1142 int bsd_gidsetsz, ngrp, error;
1143
1144 cred = td->td_ucred;
1145 bsd_gidset = cred->cr_groups;
1146 bsd_gidsetsz = cred->cr_ngroups - 1;
1147
1148 /*
1149 * cr_groups[0] holds egid. Returning the whole set
1150 * here will cause a duplicate. Exclude cr_groups[0]
1151 * to prevent that.
1152 */
1153
1154 if ((ngrp = args->gidsetsize) == 0) {
1155 td->td_retval[0] = bsd_gidsetsz;
1156 return (0);
1157 }
1158
1159 if (ngrp < bsd_gidsetsz)
1160 return (EINVAL);
1161
1162 ngrp = 0;
1163 linux_gidset = malloc(bsd_gidsetsz * sizeof(*linux_gidset),
1164 M_TEMP, M_WAITOK);
1165 while (ngrp < bsd_gidsetsz) {
1166 linux_gidset[ngrp] = bsd_gidset[ngrp + 1];
1167 ngrp++;
1168 }
1169
1170 error = copyout(linux_gidset, args->grouplist, ngrp * sizeof(l_gid_t));
1171 free(linux_gidset, M_TEMP);
1172 if (error)
1173 return (error);
1174
1175 td->td_retval[0] = ngrp;
1176 return (0);
1177}
1178
1179int
1180linux_setrlimit(struct thread *td, struct linux_setrlimit_args *args)
1181{
1182 struct rlimit bsd_rlim;
1183 struct l_rlimit rlim;
1184 u_int which;
1185 int error;
1186
1187#ifdef DEBUG
1188 if (ldebug(setrlimit))
1189 printf(ARGS(setrlimit, "%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 error = copyin(args->rlim, &rlim, sizeof(rlim));
1201 if (error)
1202 return (error);
1203
1204 bsd_rlim.rlim_cur = (rlim_t)rlim.rlim_cur;
1205 bsd_rlim.rlim_max = (rlim_t)rlim.rlim_max;
1206 return (kern_setrlimit(td, which, &bsd_rlim));
1207}
1208
1209int
1210linux_old_getrlimit(struct thread *td, struct linux_old_getrlimit_args *args)
1211{
1212 struct l_rlimit rlim;
1213 struct proc *p = td->td_proc;
1214 struct rlimit bsd_rlim;
1215 u_int which;
1216
1217#ifdef DEBUG
1218 if (ldebug(old_getrlimit))
1219 printf(ARGS(old_getrlimit, "%d, %p"),
1220 args->resource, (void *)args->rlim);
1221#endif
1222
1223 if (args->resource >= LINUX_RLIM_NLIMITS)
1224 return (EINVAL);
1225
1226 which = linux_to_bsd_resource[args->resource];
1227 if (which == -1)
1228 return (EINVAL);
1229
1230 PROC_LOCK(p);
1231 lim_rlimit(p, which, &bsd_rlim);
1232 PROC_UNLOCK(p);
1233
1234#ifdef COMPAT_LINUX32
1235 rlim.rlim_cur = (unsigned int)bsd_rlim.rlim_cur;
1236 if (rlim.rlim_cur == UINT_MAX)
1237 rlim.rlim_cur = INT_MAX;
1238 rlim.rlim_max = (unsigned int)bsd_rlim.rlim_max;
1239 if (rlim.rlim_max == UINT_MAX)
1240 rlim.rlim_max = INT_MAX;
1241#else
1242 rlim.rlim_cur = (unsigned long)bsd_rlim.rlim_cur;
1243 if (rlim.rlim_cur == ULONG_MAX)
1244 rlim.rlim_cur = LONG_MAX;
1245 rlim.rlim_max = (unsigned long)bsd_rlim.rlim_max;
1246 if (rlim.rlim_max == ULONG_MAX)
1247 rlim.rlim_max = LONG_MAX;
1248#endif
1249 return (copyout(&rlim, args->rlim, sizeof(rlim)));
1250}
1251
1252int
1253linux_getrlimit(struct thread *td, struct linux_getrlimit_args *args)
1254{
1255 struct l_rlimit rlim;
1256 struct proc *p = td->td_proc;
1257 struct rlimit bsd_rlim;
1258 u_int which;
1259
1260#ifdef DEBUG
1261 if (ldebug(getrlimit))
1262 printf(ARGS(getrlimit, "%d, %p"),
1263 args->resource, (void *)args->rlim);
1264#endif
1265
1266 if (args->resource >= LINUX_RLIM_NLIMITS)
1267 return (EINVAL);
1268
1269 which = linux_to_bsd_resource[args->resource];
1270 if (which == -1)
1271 return (EINVAL);
1272
1273 PROC_LOCK(p);
1274 lim_rlimit(p, which, &bsd_rlim);
1275 PROC_UNLOCK(p);
1276
1277 rlim.rlim_cur = (l_ulong)bsd_rlim.rlim_cur;
1278 rlim.rlim_max = (l_ulong)bsd_rlim.rlim_max;
1279 return (copyout(&rlim, args->rlim, sizeof(rlim)));
1280}
1281
1282int
1283linux_sched_setscheduler(struct thread *td,
1284 struct linux_sched_setscheduler_args *args)
1285{
1286 struct sched_setscheduler_args bsd;
1287
1288#ifdef DEBUG
1289 if (ldebug(sched_setscheduler))
1290 printf(ARGS(sched_setscheduler, "%d, %d, %p"),
1291 args->pid, args->policy, (const void *)args->param);
1292#endif
1293
1294 switch (args->policy) {
1295 case LINUX_SCHED_OTHER:
1296 bsd.policy = SCHED_OTHER;
1297 break;
1298 case LINUX_SCHED_FIFO:
1299 bsd.policy = SCHED_FIFO;
1300 break;
1301 case LINUX_SCHED_RR:
1302 bsd.policy = SCHED_RR;
1303 break;
1304 default:
1305 return (EINVAL);
1306 }
1307
1308 bsd.pid = args->pid;
1309 bsd.param = (struct sched_param *)args->param;
1310 return (sys_sched_setscheduler(td, &bsd));
1311}
1312
1313int
1314linux_sched_getscheduler(struct thread *td,
1315 struct linux_sched_getscheduler_args *args)
1316{
1317 struct sched_getscheduler_args bsd;
1318 int error;
1319
1320#ifdef DEBUG
1321 if (ldebug(sched_getscheduler))
1322 printf(ARGS(sched_getscheduler, "%d"), args->pid);
1323#endif
1324
1325 bsd.pid = args->pid;
1326 error = sys_sched_getscheduler(td, &bsd);
1327
1328 switch (td->td_retval[0]) {
1329 case SCHED_OTHER:
1330 td->td_retval[0] = LINUX_SCHED_OTHER;
1331 break;
1332 case SCHED_FIFO:
1333 td->td_retval[0] = LINUX_SCHED_FIFO;
1334 break;
1335 case SCHED_RR:
1336 td->td_retval[0] = LINUX_SCHED_RR;
1337 break;
1338 }
1339
1340 return (error);
1341}
1342
1343int
1344linux_sched_get_priority_max(struct thread *td,
1345 struct linux_sched_get_priority_max_args *args)
1346{
1347 struct sched_get_priority_max_args bsd;
1348
1349#ifdef DEBUG
1350 if (ldebug(sched_get_priority_max))
1351 printf(ARGS(sched_get_priority_max, "%d"), args->policy);
1352#endif
1353
1354 switch (args->policy) {
1355 case LINUX_SCHED_OTHER:
1356 bsd.policy = SCHED_OTHER;
1357 break;
1358 case LINUX_SCHED_FIFO:
1359 bsd.policy = SCHED_FIFO;
1360 break;
1361 case LINUX_SCHED_RR:
1362 bsd.policy = SCHED_RR;
1363 break;
1364 default:
1365 return (EINVAL);
1366 }
1367 return (sys_sched_get_priority_max(td, &bsd));
1368}
1369
1370int
1371linux_sched_get_priority_min(struct thread *td,
1372 struct linux_sched_get_priority_min_args *args)
1373{
1374 struct sched_get_priority_min_args bsd;
1375
1376#ifdef DEBUG
1377 if (ldebug(sched_get_priority_min))
1378 printf(ARGS(sched_get_priority_min, "%d"), args->policy);
1379#endif
1380
1381 switch (args->policy) {
1382 case LINUX_SCHED_OTHER:
1383 bsd.policy = SCHED_OTHER;
1384 break;
1385 case LINUX_SCHED_FIFO:
1386 bsd.policy = SCHED_FIFO;
1387 break;
1388 case LINUX_SCHED_RR:
1389 bsd.policy = SCHED_RR;
1390 break;
1391 default:
1392 return (EINVAL);
1393 }
1394 return (sys_sched_get_priority_min(td, &bsd));
1395}
1396
1397#define REBOOT_CAD_ON 0x89abcdef
1398#define REBOOT_CAD_OFF 0
1399#define REBOOT_HALT 0xcdef0123
1400#define REBOOT_RESTART 0x01234567
1401#define REBOOT_RESTART2 0xA1B2C3D4
1402#define REBOOT_POWEROFF 0x4321FEDC
1403#define REBOOT_MAGIC1 0xfee1dead
1404#define REBOOT_MAGIC2 0x28121969
1405#define REBOOT_MAGIC2A 0x05121996
1406#define REBOOT_MAGIC2B 0x16041998
1407
1408int
1409linux_reboot(struct thread *td, struct linux_reboot_args *args)
1410{
1411 struct reboot_args bsd_args;
1412
1413#ifdef DEBUG
1414 if (ldebug(reboot))
1415 printf(ARGS(reboot, "0x%x"), args->cmd);
1416#endif
1417
1418 if (args->magic1 != REBOOT_MAGIC1)
1419 return (EINVAL);
1420
1421 switch (args->magic2) {
1422 case REBOOT_MAGIC2:
1423 case REBOOT_MAGIC2A:
1424 case REBOOT_MAGIC2B:
1425 break;
1426 default:
1427 return (EINVAL);
1428 }
1429
1430 switch (args->cmd) {
1431 case REBOOT_CAD_ON:
1432 case REBOOT_CAD_OFF:
1433 return (priv_check(td, PRIV_REBOOT));
1434 case REBOOT_HALT:
1435 bsd_args.opt = RB_HALT;
1436 break;
1437 case REBOOT_RESTART:
1438 case REBOOT_RESTART2:
1439 bsd_args.opt = 0;
1440 break;
1441 case REBOOT_POWEROFF:
1442 bsd_args.opt = RB_POWEROFF;
1443 break;
1444 default:
1445 return (EINVAL);
1446 }
1447 return (sys_reboot(td, &bsd_args));
1448}
1449
1450
1451/*
1452 * The FreeBSD native getpid(2), getgid(2) and getuid(2) also modify
1453 * td->td_retval[1] when COMPAT_43 is defined. This clobbers registers that
1454 * are assumed to be preserved. The following lightweight syscalls fixes
1455 * this. See also linux_getgid16() and linux_getuid16() in linux_uid16.c
1456 *
1457 * linux_getpid() - MP SAFE
1458 * linux_getgid() - MP SAFE
1459 * linux_getuid() - MP SAFE
1460 */
1461
1462int
1463linux_getpid(struct thread *td, struct linux_getpid_args *args)
1464{
1465 struct linux_emuldata *em;
1466
1467#ifdef DEBUG
1468 if (ldebug(getpid))
1469 printf(ARGS(getpid, ""));
1470#endif
1471
1472 if (linux_use26(td)) {
1473 em = em_find(td->td_proc, EMUL_DONTLOCK);
1474 KASSERT(em != NULL, ("getpid: emuldata not found.\n"));
1475 td->td_retval[0] = em->shared->group_pid;
1476 } else {
1477 td->td_retval[0] = td->td_proc->p_pid;
1478 }
1479
1480 return (0);
1481}
1482
1483int
1484linux_gettid(struct thread *td, struct linux_gettid_args *args)
1485{
1486
1487#ifdef DEBUG
1488 if (ldebug(gettid))
1489 printf(ARGS(gettid, ""));
1490#endif
1491
1492 td->td_retval[0] = td->td_proc->p_pid;
1493 return (0);
1494}
1495
1496
1497int
1498linux_getppid(struct thread *td, struct linux_getppid_args *args)
1499{
1500 struct linux_emuldata *em;
1501 struct proc *p, *pp;
1502
1503#ifdef DEBUG
1504 if (ldebug(getppid))
1505 printf(ARGS(getppid, ""));
1506#endif
1507
1508 if (!linux_use26(td)) {
1509 PROC_LOCK(td->td_proc);
1510 td->td_retval[0] = td->td_proc->p_pptr->p_pid;
1511 PROC_UNLOCK(td->td_proc);
1512 return (0);
1513 }
1514
1515 em = em_find(td->td_proc, EMUL_DONTLOCK);
1516
1517 KASSERT(em != NULL, ("getppid: process emuldata not found.\n"));
1518
1519 /* find the group leader */
1520 p = pfind(em->shared->group_pid);
1521
1522 if (p == NULL) {
1523#ifdef DEBUG
1524 printf(LMSG("parent process not found.\n"));
1525#endif
1526 return (0);
1527 }
1528
1529 pp = p->p_pptr; /* switch to parent */
1530 PROC_LOCK(pp);
1531 PROC_UNLOCK(p);
1532
1533 /* if its also linux process */
1534 if (pp->p_sysent == &elf_linux_sysvec) {
1535 em = em_find(pp, EMUL_DONTLOCK);
1536 KASSERT(em != NULL, ("getppid: parent emuldata not found.\n"));
1537
1538 td->td_retval[0] = em->shared->group_pid;
1539 } else
1540 td->td_retval[0] = pp->p_pid;
1541
1542 PROC_UNLOCK(pp);
1543
1544 return (0);
1545}
1546
1547int
1548linux_getgid(struct thread *td, struct linux_getgid_args *args)
1549{
1550
1551#ifdef DEBUG
1552 if (ldebug(getgid))
1553 printf(ARGS(getgid, ""));
1554#endif
1555
1556 td->td_retval[0] = td->td_ucred->cr_rgid;
1557 return (0);
1558}
1559
1560int
1561linux_getuid(struct thread *td, struct linux_getuid_args *args)
1562{
1563
1564#ifdef DEBUG
1565 if (ldebug(getuid))
1566 printf(ARGS(getuid, ""));
1567#endif
1568
1569 td->td_retval[0] = td->td_ucred->cr_ruid;
1570 return (0);
1571}
1572
1573
1574int
1575linux_getsid(struct thread *td, struct linux_getsid_args *args)
1576{
1577 struct getsid_args bsd;
1578
1579#ifdef DEBUG
1580 if (ldebug(getsid))
1581 printf(ARGS(getsid, "%i"), args->pid);
1582#endif
1583
1584 bsd.pid = args->pid;
1585 return (sys_getsid(td, &bsd));
1586}
1587
1588int
1589linux_nosys(struct thread *td, struct nosys_args *ignore)
1590{
1591
1592 return (ENOSYS);
1593}
1594
1595int
1596linux_getpriority(struct thread *td, struct linux_getpriority_args *args)
1597{
1598 struct getpriority_args bsd_args;
1599 int error;
1600
1601#ifdef DEBUG
1602 if (ldebug(getpriority))
1603 printf(ARGS(getpriority, "%i, %i"), args->which, args->who);
1604#endif
1605
1606 bsd_args.which = args->which;
1607 bsd_args.who = args->who;
1608 error = sys_getpriority(td, &bsd_args);
1609 td->td_retval[0] = 20 - td->td_retval[0];
1610 return (error);
1611}
1612
1613int
1614linux_sethostname(struct thread *td, struct linux_sethostname_args *args)
1615{
1616 int name[2];
1617
1618#ifdef DEBUG
1619 if (ldebug(sethostname))
1620 printf(ARGS(sethostname, "*, %i"), args->len);
1621#endif
1622
1623 name[0] = CTL_KERN;
1624 name[1] = KERN_HOSTNAME;
1625 return (userland_sysctl(td, name, 2, 0, 0, 0, args->hostname,
1626 args->len, 0, 0));
1627}
1628
1629int
1630linux_setdomainname(struct thread *td, struct linux_setdomainname_args *args)
1631{
1632 int name[2];
1633
1634#ifdef DEBUG
1635 if (ldebug(setdomainname))
1636 printf(ARGS(setdomainname, "*, %i"), args->len);
1637#endif
1638
1639 name[0] = CTL_KERN;
1640 name[1] = KERN_NISDOMAINNAME;
1641 return (userland_sysctl(td, name, 2, 0, 0, 0, args->name,
1642 args->len, 0, 0));
1643}
1644
1645int
1646linux_exit_group(struct thread *td, struct linux_exit_group_args *args)
1647{
1648 struct linux_emuldata *em;
1649
1650#ifdef DEBUG
1651 if (ldebug(exit_group))
1652 printf(ARGS(exit_group, "%i"), args->error_code);
1653#endif
1654
1655 em = em_find(td->td_proc, EMUL_DONTLOCK);
1656 if (em->shared->refs > 1) {
1657 EMUL_SHARED_WLOCK(&emul_shared_lock);
1658 em->shared->flags |= EMUL_SHARED_HASXSTAT;
1659 em->shared->xstat = W_EXITCODE(args->error_code, 0);
1660 EMUL_SHARED_WUNLOCK(&emul_shared_lock);
1661 if (linux_use26(td))
1662 linux_kill_threads(td, SIGKILL);
1663 }
1664
1665 /*
1666 * XXX: we should send a signal to the parent if
1667 * SIGNAL_EXIT_GROUP is set. We ignore that (temporarily?)
1668 * as it doesnt occur often.
1669 */
1670 exit1(td, W_EXITCODE(args->error_code, 0));
1671
1672 return (0);
1673}
1674
1675#define _LINUX_CAPABILITY_VERSION 0x19980330
1676
1677struct l_user_cap_header {
1678 l_int version;
1679 l_int pid;
1680};
1681
1682struct l_user_cap_data {
1683 l_int effective;
1684 l_int permitted;
1685 l_int inheritable;
1686};
1687
1688int
1689linux_capget(struct thread *td, struct linux_capget_args *args)
1690{
1691 struct l_user_cap_header luch;
1692 struct l_user_cap_data lucd;
1693 int error;
1694
1695 if (args->hdrp == NULL)
1696 return (EFAULT);
1697
1698 error = copyin(args->hdrp, &luch, sizeof(luch));
1699 if (error != 0)
1700 return (error);
1701
1702 if (luch.version != _LINUX_CAPABILITY_VERSION) {
1703 luch.version = _LINUX_CAPABILITY_VERSION;
1704 error = copyout(&luch, args->hdrp, sizeof(luch));
1705 if (error)
1706 return (error);
1707 return (EINVAL);
1708 }
1709
1710 if (luch.pid)
1711 return (EPERM);
1712
1713 if (args->datap) {
1714 /*
1715 * The current implementation doesn't support setting
1716 * a capability (it's essentially a stub) so indicate
1717 * that no capabilities are currently set or available
1718 * to request.
1719 */
1720 bzero (&lucd, sizeof(lucd));
1721 error = copyout(&lucd, args->datap, sizeof(lucd));
1722 }
1723
1724 return (error);
1725}
1726
1727int
1728linux_capset(struct thread *td, struct linux_capset_args *args)
1729{
1730 struct l_user_cap_header luch;
1731 struct l_user_cap_data lucd;
1732 int error;
1733
1734 if (args->hdrp == NULL || args->datap == NULL)
1735 return (EFAULT);
1736
1737 error = copyin(args->hdrp, &luch, sizeof(luch));
1738 if (error != 0)
1739 return (error);
1740
1741 if (luch.version != _LINUX_CAPABILITY_VERSION) {
1742 luch.version = _LINUX_CAPABILITY_VERSION;
1743 error = copyout(&luch, args->hdrp, sizeof(luch));
1744 if (error)
1745 return (error);
1746 return (EINVAL);
1747 }
1748
1749 if (luch.pid)
1750 return (EPERM);
1751
1752 error = copyin(args->datap, &lucd, sizeof(lucd));
1753 if (error != 0)
1754 return (error);
1755
1756 /* We currently don't support setting any capabilities. */
1757 if (lucd.effective || lucd.permitted || lucd.inheritable) {
1758 linux_msg(td,
1759 "capset effective=0x%x, permitted=0x%x, "
1760 "inheritable=0x%x is not implemented",
1761 (int)lucd.effective, (int)lucd.permitted,
1762 (int)lucd.inheritable);
1763 return (EPERM);
1764 }
1765
1766 return (0);
1767}
1768
1769int
1770linux_prctl(struct thread *td, struct linux_prctl_args *args)
1771{
1772 int error = 0, max_size;
1773 struct proc *p = td->td_proc;
1774 char comm[LINUX_MAX_COMM_LEN];
1775 struct linux_emuldata *em;
1776 int pdeath_signal;
1777
1778#ifdef DEBUG
1779 if (ldebug(prctl))
1780 printf(ARGS(prctl, "%d, %d, %d, %d, %d"), args->option,
1781 args->arg2, args->arg3, args->arg4, args->arg5);
1782#endif
1783
1784 switch (args->option) {
1785 case LINUX_PR_SET_PDEATHSIG:
1786 if (!LINUX_SIG_VALID(args->arg2))
1787 return (EINVAL);
1788 em = em_find(p, EMUL_DOLOCK);
1789 KASSERT(em != NULL, ("prctl: emuldata not found.\n"));
1790 em->pdeath_signal = args->arg2;
1791 EMUL_UNLOCK(&emul_lock);
1792 break;
1793 case LINUX_PR_GET_PDEATHSIG:
1794 em = em_find(p, EMUL_DOLOCK);
1795 KASSERT(em != NULL, ("prctl: emuldata not found.\n"));
1796 pdeath_signal = em->pdeath_signal;
1797 EMUL_UNLOCK(&emul_lock);
1798 error = copyout(&pdeath_signal,
1799 (void *)(register_t)args->arg2,
1800 sizeof(pdeath_signal));
1801 break;
1802 case LINUX_PR_GET_KEEPCAPS:
1803 /*
1804 * Indicate that we always clear the effective and
1805 * permitted capability sets when the user id becomes
1806 * non-zero (actually the capability sets are simply
1807 * always zero in the current implementation).
1808 */
1809 td->td_retval[0] = 0;
1810 break;
1811 case LINUX_PR_SET_KEEPCAPS:
1812 /*
1813 * Ignore requests to keep the effective and permitted
1814 * capability sets when the user id becomes non-zero.
1815 */
1816 break;
1817 case LINUX_PR_SET_NAME:
1818 /*
1819 * To be on the safe side we need to make sure to not
1820 * overflow the size a linux program expects. We already
1821 * do this here in the copyin, so that we don't need to
1822 * check on copyout.
1823 */
1824 max_size = MIN(sizeof(comm), sizeof(p->p_comm));
1825 error = copyinstr((void *)(register_t)args->arg2, comm,
1826 max_size, NULL);
1827
1828 /* Linux silently truncates the name if it is too long. */
1829 if (error == ENAMETOOLONG) {
1830 /*
1831 * XXX: copyinstr() isn't documented to populate the
1832 * array completely, so do a copyin() to be on the
1833 * safe side. This should be changed in case
1834 * copyinstr() is changed to guarantee this.
1835 */
1836 error = copyin((void *)(register_t)args->arg2, comm,
1837 max_size - 1);
1838 comm[max_size - 1] = '\0';
1839 }
1840 if (error)
1841 return (error);
1842
1843 PROC_LOCK(p);
1844 strlcpy(p->p_comm, comm, sizeof(p->p_comm));
1845 PROC_UNLOCK(p);
1846 break;
1847 case LINUX_PR_GET_NAME:
1848 PROC_LOCK(p);
1849 strlcpy(comm, p->p_comm, sizeof(comm));
1850 PROC_UNLOCK(p);
1851 error = copyout(comm, (void *)(register_t)args->arg2,
1852 strlen(comm) + 1);
1853 break;
1854 default:
1855 error = EINVAL;
1856 break;
1857 }
1858
1859 return (error);
1860}
1861
1862/*
1863 * Get affinity of a process.
1864 */
1865int
1866linux_sched_getaffinity(struct thread *td,
1867 struct linux_sched_getaffinity_args *args)
1868{
1869 int error;
1870 struct cpuset_getaffinity_args cga;
1871
1872#ifdef DEBUG
1873 if (ldebug(sched_getaffinity))
1874 printf(ARGS(sched_getaffinity, "%d, %d, *"), args->pid,
1875 args->len);
1876#endif
1877 if (args->len < sizeof(cpuset_t))
1878 return (EINVAL);
1879
1880 cga.level = CPU_LEVEL_WHICH;
1881 cga.which = CPU_WHICH_PID;
1882 cga.id = args->pid;
1883 cga.cpusetsize = sizeof(cpuset_t);
1884 cga.mask = (cpuset_t *) args->user_mask_ptr;
1885
1886 if ((error = sys_cpuset_getaffinity(td, &cga)) == 0)
1887 td->td_retval[0] = sizeof(cpuset_t);
1888
1889 return (error);
1890}
1891
1892/*
1893 * Set affinity of a process.
1894 */
1895int
1896linux_sched_setaffinity(struct thread *td,
1897 struct linux_sched_setaffinity_args *args)
1898{
1899 struct cpuset_setaffinity_args csa;
1900
1901#ifdef DEBUG
1902 if (ldebug(sched_setaffinity))
1903 printf(ARGS(sched_setaffinity, "%d, %d, *"), args->pid,
1904 args->len);
1905#endif
1906 if (args->len < sizeof(cpuset_t))
1907 return (EINVAL);
1908
1909 csa.level = CPU_LEVEL_WHICH;
1910 csa.which = CPU_WHICH_PID;
1911 csa.id = args->pid;
1912 csa.cpusetsize = sizeof(cpuset_t);
1913 csa.mask = (cpuset_t *) args->user_mask_ptr;
1914
1915 return (sys_cpuset_setaffinity(td, &csa));
1916}
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