77424f4177
- Move linux_nanosleep() from src/sys/amd64/linux32/linux32_machdep.c to src/sys/compat/linux/linux_time.c. - Validate timespec ranges before use as Linux kernel does. - Fix l_timespec structure. - Clean up style(9) nits.
247 lines
6.4 KiB
C
247 lines
6.4 KiB
C
/* $NetBSD: linux_time.c,v 1.14 2006/05/14 03:40:54 christos Exp $ */
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/*-
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* Copyright (c) 2001 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Emmanuel Dreyfus.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#if 0
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__KERNEL_RCSID(0, "$NetBSD: linux_time.c,v 1.14 2006/05/14 03:40:54 christos Exp $");
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#endif
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#include "opt_compat.h"
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#include <sys/param.h>
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#include <sys/ucred.h>
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#include <sys/mount.h>
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#include <sys/signal.h>
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#include <sys/stdint.h>
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#include <sys/syscallsubr.h>
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#include <sys/sysproto.h>
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#include <sys/time.h>
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#include <sys/systm.h>
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#include <sys/proc.h>
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#ifdef COMPAT_LINUX32
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#include <machine/../linux32/linux.h>
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#include <machine/../linux32/linux32_proto.h>
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#else
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#include <machine/../linux/linux.h>
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#include <machine/../linux/linux_proto.h>
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#endif
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static void native_to_linux_timespec(struct l_timespec *,
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struct timespec *);
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static int linux_to_native_timespec(struct timespec *,
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struct l_timespec *);
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static int linux_to_native_clockid(clockid_t *, clockid_t);
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static void
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native_to_linux_timespec(struct l_timespec *ltp, struct timespec *ntp)
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{
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ltp->tv_sec = ntp->tv_sec;
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ltp->tv_nsec = ntp->tv_nsec;
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}
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static int
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linux_to_native_timespec(struct timespec *ntp, struct l_timespec *ltp)
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{
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if (ltp->tv_sec < 0 || ltp->tv_nsec > (l_long)999999999L)
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return (EINVAL);
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ntp->tv_sec = ltp->tv_sec;
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ntp->tv_nsec = ltp->tv_nsec;
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return (0);
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}
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static int
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linux_to_native_clockid(clockid_t *n, clockid_t l)
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{
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switch (l) {
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case LINUX_CLOCK_REALTIME:
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*n = CLOCK_REALTIME;
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break;
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case LINUX_CLOCK_MONOTONIC:
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*n = CLOCK_MONOTONIC;
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break;
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case LINUX_CLOCK_PROCESS_CPUTIME_ID:
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case LINUX_CLOCK_THREAD_CPUTIME_ID:
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case LINUX_CLOCK_REALTIME_HR:
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case LINUX_CLOCK_MONOTONIC_HR:
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default:
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return (EINVAL);
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break;
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}
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return (0);
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}
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int
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linux_clock_gettime(struct thread *td, struct linux_clock_gettime_args *args)
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{
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struct l_timespec lts;
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int error;
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clockid_t nwhich = 0; /* XXX: GCC */
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struct timespec tp;
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error = linux_to_native_clockid(&nwhich, args->which);
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if (error != 0)
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return (error);
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error = kern_clock_gettime(td, nwhich, &tp);
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if (error != 0)
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return (error);
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native_to_linux_timespec(<s, &tp);
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return (copyout(<s, args->tp, sizeof lts));
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}
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int
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linux_clock_settime(struct thread *td, struct linux_clock_settime_args *args)
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{
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struct timespec ts;
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struct l_timespec lts;
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int error;
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clockid_t nwhich = 0; /* XXX: GCC */
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error = linux_to_native_clockid(&nwhich, args->which);
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if (error != 0)
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return (error);
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error = copyin(args->tp, <s, sizeof lts);
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if (error != 0)
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return (error);
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error = linux_to_native_timespec(&ts, <s);
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if (error != 0)
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return (error);
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return (kern_clock_settime(td, nwhich, &ts));
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}
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int
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linux_clock_getres(struct thread *td, struct linux_clock_getres_args *args)
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{
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struct timespec ts;
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struct l_timespec lts;
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int error;
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clockid_t nwhich = 0; /* XXX: GCC */
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if (args->tp == NULL)
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return (0);
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error = linux_to_native_clockid(&nwhich, args->which);
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if (error != 0)
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return (error);
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error = kern_clock_getres(td, nwhich, &ts);
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if (error != 0)
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return (error);
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native_to_linux_timespec(<s, &ts);
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return (copyout(<s, args->tp, sizeof lts));
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}
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int
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linux_nanosleep(struct thread *td, struct linux_nanosleep_args *args)
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{
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struct timespec *rmtp;
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struct l_timespec lrqts, lrmts;
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struct timespec rqts, rmts;
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int error;
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error = copyin(args->rqtp, &lrqts, sizeof lrqts);
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if (error != 0)
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return (error);
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if (args->rmtp != NULL)
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rmtp = &rmts;
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else
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rmtp = NULL;
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error = linux_to_native_timespec(&rqts, &lrqts);
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if (error != 0)
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return (error);
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error = kern_nanosleep(td, &rqts, rmtp);
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if (error != 0)
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return (error);
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if (args->rmtp != NULL) {
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native_to_linux_timespec(&lrmts, rmtp);
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error = copyout(&lrmts, args->rmtp, sizeof(lrmts));
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if (error != 0)
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return (error);
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}
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return (0);
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}
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int
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linux_clock_nanosleep(struct thread *td, struct linux_clock_nanosleep_args *args)
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{
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struct timespec *rmtp;
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struct l_timespec lrqts, lrmts;
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struct timespec rqts, rmts;
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int error;
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if (args->flags != 0)
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return (EINVAL); /* XXX deal with TIMER_ABSTIME */
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if (args->which != LINUX_CLOCK_REALTIME)
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return (EINVAL);
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error = copyin(args->rqtp, &lrqts, sizeof lrqts);
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if (error != 0)
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return (error);
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if (args->rmtp != NULL)
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rmtp = &rmts;
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else
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rmtp = NULL;
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error = linux_to_native_timespec(&rqts, &lrqts);
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if (error != 0)
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return (error);
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error = kern_nanosleep(td, &rqts, rmtp);
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if (error != 0)
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return (error);
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if (args->rmtp != NULL) {
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native_to_linux_timespec(&lrmts, rmtp);
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error = copyout(&lrmts, args->rmtp, sizeof lrmts );
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if (error != 0)
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return (error);
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}
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return (0);
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}
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