5c2748d5e7
writes the remaining time into the structure pointed to by rmtp unless rmtp is NULL. The value of *rmtp can then be used to call nanosleep() again and complete the specified pause if the previous call was interrupted. Note. clock_nanosleep() with an absolute time value does not write the remaining time. While here fix whitespaces and typo in SDT_PROBE.
570 lines
16 KiB
C
570 lines
16 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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*
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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/kernel.h>
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#include <sys/lock.h>
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#include <sys/ucred.h>
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#include <sys/mount.h>
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#include <sys/mutex.h>
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#include <sys/resourcevar.h>
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#include <sys/sdt.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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#include <compat/linux/linux_dtrace.h>
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#include <compat/linux/linux_timer.h>
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/* DTrace init */
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LIN_SDT_PROVIDER_DECLARE(LINUX_DTRACE);
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/**
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* DTrace probes in this module.
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*/
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LIN_SDT_PROBE_DEFINE2(time, native_to_linux_timespec, entry,
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"struct l_timespec *", "struct timespec *");
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LIN_SDT_PROBE_DEFINE0(time, native_to_linux_timespec, return);
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LIN_SDT_PROBE_DEFINE2(time, linux_to_native_timespec, entry,
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"struct timespec *", "struct l_timespec *");
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LIN_SDT_PROBE_DEFINE1(time, linux_to_native_timespec, return, "int");
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LIN_SDT_PROBE_DEFINE2(time, linux_to_native_clockid, entry, "clockid_t *",
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"clockid_t");
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LIN_SDT_PROBE_DEFINE1(time, linux_to_native_clockid, unsupported_clockid,
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"clockid_t");
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LIN_SDT_PROBE_DEFINE1(time, linux_to_native_clockid, unknown_clockid,
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"clockid_t");
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LIN_SDT_PROBE_DEFINE1(time, linux_to_native_clockid, return, "int");
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LIN_SDT_PROBE_DEFINE2(time, linux_clock_gettime, entry, "clockid_t",
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"struct l_timespec *");
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LIN_SDT_PROBE_DEFINE1(time, linux_clock_gettime, conversion_error, "int");
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LIN_SDT_PROBE_DEFINE1(time, linux_clock_gettime, gettime_error, "int");
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LIN_SDT_PROBE_DEFINE1(time, linux_clock_gettime, copyout_error, "int");
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LIN_SDT_PROBE_DEFINE1(time, linux_clock_gettime, return, "int");
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LIN_SDT_PROBE_DEFINE2(time, linux_clock_settime, entry, "clockid_t",
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"struct l_timespec *");
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LIN_SDT_PROBE_DEFINE1(time, linux_clock_settime, conversion_error, "int");
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LIN_SDT_PROBE_DEFINE1(time, linux_clock_settime, settime_error, "int");
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LIN_SDT_PROBE_DEFINE1(time, linux_clock_settime, copyin_error, "int");
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LIN_SDT_PROBE_DEFINE1(time, linux_clock_settime, return, "int");
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LIN_SDT_PROBE_DEFINE2(time, linux_clock_getres, entry, "clockid_t",
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"struct l_timespec *");
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LIN_SDT_PROBE_DEFINE0(time, linux_clock_getres, nullcall);
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LIN_SDT_PROBE_DEFINE1(time, linux_clock_getres, conversion_error, "int");
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LIN_SDT_PROBE_DEFINE1(time, linux_clock_getres, getres_error, "int");
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LIN_SDT_PROBE_DEFINE1(time, linux_clock_getres, copyout_error, "int");
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LIN_SDT_PROBE_DEFINE1(time, linux_clock_getres, return, "int");
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LIN_SDT_PROBE_DEFINE2(time, linux_nanosleep, entry, "const struct l_timespec *",
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"struct l_timespec *");
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LIN_SDT_PROBE_DEFINE1(time, linux_nanosleep, conversion_error, "int");
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LIN_SDT_PROBE_DEFINE1(time, linux_nanosleep, copyout_error, "int");
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LIN_SDT_PROBE_DEFINE1(time, linux_nanosleep, copyin_error, "int");
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LIN_SDT_PROBE_DEFINE1(time, linux_nanosleep, return, "int");
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LIN_SDT_PROBE_DEFINE4(time, linux_clock_nanosleep, entry, "clockid_t", "int",
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"struct l_timespec *", "struct l_timespec *");
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LIN_SDT_PROBE_DEFINE1(time, linux_clock_nanosleep, conversion_error, "int");
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LIN_SDT_PROBE_DEFINE1(time, linux_clock_nanosleep, copyout_error, "int");
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LIN_SDT_PROBE_DEFINE1(time, linux_clock_nanosleep, copyin_error, "int");
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LIN_SDT_PROBE_DEFINE1(time, linux_clock_nanosleep, unsupported_flags, "int");
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LIN_SDT_PROBE_DEFINE1(time, linux_clock_nanosleep, unsupported_clockid, "int");
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LIN_SDT_PROBE_DEFINE1(time, linux_clock_nanosleep, return, "int");
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void
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native_to_linux_timespec(struct l_timespec *ltp, struct timespec *ntp)
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{
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LIN_SDT_PROBE2(time, native_to_linux_timespec, entry, ltp, ntp);
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ltp->tv_sec = ntp->tv_sec;
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ltp->tv_nsec = ntp->tv_nsec;
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LIN_SDT_PROBE0(time, native_to_linux_timespec, return);
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}
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int
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linux_to_native_timespec(struct timespec *ntp, struct l_timespec *ltp)
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{
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LIN_SDT_PROBE2(time, linux_to_native_timespec, entry, ntp, ltp);
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if (ltp->tv_sec < 0 || ltp->tv_nsec > (l_long)999999999L) {
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LIN_SDT_PROBE1(time, linux_to_native_timespec, return, EINVAL);
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return (EINVAL);
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}
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ntp->tv_sec = ltp->tv_sec;
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ntp->tv_nsec = ltp->tv_nsec;
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LIN_SDT_PROBE1(time, linux_to_native_timespec, return, 0);
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return (0);
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}
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int
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linux_to_native_clockid(clockid_t *n, clockid_t l)
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{
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LIN_SDT_PROBE2(time, linux_to_native_clockid, entry, n, l);
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if (l < 0) {
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/* cpu-clock */
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if ((l & LINUX_CLOCKFD_MASK) == LINUX_CLOCKFD)
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return (EINVAL);
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if (LINUX_CPUCLOCK_WHICH(l) >= LINUX_CPUCLOCK_MAX)
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return (EINVAL);
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if (LINUX_CPUCLOCK_PERTHREAD(l))
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*n = CLOCK_THREAD_CPUTIME_ID;
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else
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*n = CLOCK_PROCESS_CPUTIME_ID;
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return (0);
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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_REALTIME_COARSE:
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*n = CLOCK_REALTIME_FAST;
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break;
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case LINUX_CLOCK_MONOTONIC_COARSE:
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*n = CLOCK_MONOTONIC_FAST;
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break;
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case LINUX_CLOCK_MONOTONIC_RAW:
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case LINUX_CLOCK_BOOTTIME:
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case LINUX_CLOCK_REALTIME_ALARM:
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case LINUX_CLOCK_BOOTTIME_ALARM:
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case LINUX_CLOCK_SGI_CYCLE:
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case LINUX_CLOCK_TAI:
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LIN_SDT_PROBE1(time, linux_to_native_clockid,
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unsupported_clockid, l);
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LIN_SDT_PROBE1(time, linux_to_native_clockid, return, EINVAL);
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return (EINVAL);
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default:
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LIN_SDT_PROBE1(time, linux_to_native_clockid,
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unknown_clockid, l);
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LIN_SDT_PROBE1(time, linux_to_native_clockid, return, EINVAL);
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return (EINVAL);
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}
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LIN_SDT_PROBE1(time, linux_to_native_clockid, return, 0);
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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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struct timespec tp;
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struct rusage ru;
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struct thread *targettd;
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struct proc *p;
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int error, clockwhich;
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clockid_t nwhich = 0; /* XXX: GCC */
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pid_t pid;
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lwpid_t tid;
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LIN_SDT_PROBE2(time, linux_clock_gettime, entry, args->which, args->tp);
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error = linux_to_native_clockid(&nwhich, args->which);
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if (error != 0) {
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LIN_SDT_PROBE1(time, linux_clock_gettime, conversion_error,
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error);
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LIN_SDT_PROBE1(time, linux_clock_gettime, return, error);
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return (error);
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}
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switch (nwhich) {
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case CLOCK_PROCESS_CPUTIME_ID:
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clockwhich = LINUX_CPUCLOCK_WHICH(args->which);
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pid = LINUX_CPUCLOCK_ID(args->which);
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if (pid == 0) {
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p = td->td_proc;
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PROC_LOCK(p);
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} else {
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error = pget(pid, PGET_CANSEE, &p);
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if (error != 0)
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return (EINVAL);
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}
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switch (clockwhich) {
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case LINUX_CPUCLOCK_PROF:
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PROC_STATLOCK(p);
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calcru(p, &ru.ru_utime, &ru.ru_stime);
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PROC_STATUNLOCK(p);
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PROC_UNLOCK(p);
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timevaladd(&ru.ru_utime, &ru.ru_stime);
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TIMEVAL_TO_TIMESPEC(&ru.ru_utime, &tp);
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break;
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case LINUX_CPUCLOCK_VIRT:
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PROC_STATLOCK(p);
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calcru(p, &ru.ru_utime, &ru.ru_stime);
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PROC_STATUNLOCK(p);
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PROC_UNLOCK(p);
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TIMEVAL_TO_TIMESPEC(&ru.ru_utime, &tp);
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break;
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case LINUX_CPUCLOCK_SCHED:
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PROC_UNLOCK(p);
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error = kern_clock_getcpuclockid2(td, pid,
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CPUCLOCK_WHICH_PID, &nwhich);
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if (error != 0)
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return (EINVAL);
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error = kern_clock_gettime(td, nwhich, &tp);
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break;
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default:
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PROC_UNLOCK(p);
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return (EINVAL);
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}
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break;
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case CLOCK_THREAD_CPUTIME_ID:
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clockwhich = LINUX_CPUCLOCK_WHICH(args->which);
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p = td->td_proc;
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tid = LINUX_CPUCLOCK_ID(args->which);
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if (tid == 0) {
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targettd = td;
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PROC_LOCK(p);
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} else {
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targettd = tdfind(tid, p->p_pid);
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if (targettd == NULL)
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return (EINVAL);
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}
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switch (clockwhich) {
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case LINUX_CPUCLOCK_PROF:
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PROC_STATLOCK(p);
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thread_lock(targettd);
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rufetchtd(targettd, &ru);
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thread_unlock(targettd);
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PROC_STATUNLOCK(p);
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PROC_UNLOCK(p);
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timevaladd(&ru.ru_utime, &ru.ru_stime);
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TIMEVAL_TO_TIMESPEC(&ru.ru_utime, &tp);
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break;
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case LINUX_CPUCLOCK_VIRT:
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PROC_STATLOCK(p);
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thread_lock(targettd);
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rufetchtd(targettd, &ru);
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thread_unlock(targettd);
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PROC_STATUNLOCK(p);
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PROC_UNLOCK(p);
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TIMEVAL_TO_TIMESPEC(&ru.ru_utime, &tp);
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break;
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case LINUX_CPUCLOCK_SCHED:
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error = kern_clock_getcpuclockid2(td, tid,
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CPUCLOCK_WHICH_TID, &nwhich);
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PROC_UNLOCK(p);
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if (error != 0)
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return (EINVAL);
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error = kern_clock_gettime(td, nwhich, &tp);
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break;
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default:
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PROC_UNLOCK(p);
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return (EINVAL);
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}
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break;
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default:
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error = kern_clock_gettime(td, nwhich, &tp);
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break;
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}
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if (error != 0) {
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LIN_SDT_PROBE1(time, linux_clock_gettime, gettime_error, error);
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LIN_SDT_PROBE1(time, linux_clock_gettime, return, error);
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return (error);
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}
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native_to_linux_timespec(<s, &tp);
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error = copyout(<s, args->tp, sizeof lts);
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if (error != 0)
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LIN_SDT_PROBE1(time, linux_clock_gettime, copyout_error, error);
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LIN_SDT_PROBE1(time, linux_clock_gettime, return, error);
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return (error);
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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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LIN_SDT_PROBE2(time, linux_clock_settime, entry, args->which, args->tp);
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error = linux_to_native_clockid(&nwhich, args->which);
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if (error != 0) {
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LIN_SDT_PROBE1(time, linux_clock_settime, conversion_error,
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error);
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LIN_SDT_PROBE1(time, linux_clock_settime, return, error);
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return (error);
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}
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error = copyin(args->tp, <s, sizeof lts);
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if (error != 0) {
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LIN_SDT_PROBE1(time, linux_clock_settime, copyin_error, error);
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LIN_SDT_PROBE1(time, linux_clock_settime, return, error);
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return (error);
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}
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error = linux_to_native_timespec(&ts, <s);
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if (error != 0) {
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LIN_SDT_PROBE1(time, linux_clock_settime, conversion_error,
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error);
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LIN_SDT_PROBE1(time, linux_clock_settime, return, error);
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return (error);
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}
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error = kern_clock_settime(td, nwhich, &ts);
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if (error != 0)
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LIN_SDT_PROBE1(time, linux_clock_settime, settime_error, error);
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LIN_SDT_PROBE1(time, linux_clock_settime, return, error);
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return (error);
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}
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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 proc *p;
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struct timespec ts;
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struct l_timespec lts;
|
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int error, clockwhich;
|
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clockid_t nwhich = 0; /* XXX: GCC */
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pid_t pid;
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lwpid_t tid;
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LIN_SDT_PROBE2(time, linux_clock_getres, entry, args->which, args->tp);
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error = linux_to_native_clockid(&nwhich, args->which);
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if (error != 0) {
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LIN_SDT_PROBE1(time, linux_clock_getres, conversion_error,
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error);
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LIN_SDT_PROBE1(time, linux_clock_getres, return, error);
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return (error);
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}
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|
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/*
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* Check user supplied clock id in case of per-process
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* or thread-specific cpu-time clock.
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*/
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switch (nwhich) {
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case CLOCK_THREAD_CPUTIME_ID:
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tid = LINUX_CPUCLOCK_ID(args->which);
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if (tid != 0) {
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p = td->td_proc;
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if (tdfind(tid, p->p_pid) == NULL)
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return (ESRCH);
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PROC_UNLOCK(p);
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}
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break;
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case CLOCK_PROCESS_CPUTIME_ID:
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pid = LINUX_CPUCLOCK_ID(args->which);
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|
if (pid != 0) {
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error = pget(pid, PGET_CANSEE, &p);
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if (error != 0)
|
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return (EINVAL);
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PROC_UNLOCK(p);
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}
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break;
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}
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|
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if (args->tp == NULL) {
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LIN_SDT_PROBE0(time, linux_clock_getres, nullcall);
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LIN_SDT_PROBE1(time, linux_clock_getres, return, 0);
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return (0);
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}
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|
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switch (nwhich) {
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case CLOCK_THREAD_CPUTIME_ID:
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case CLOCK_PROCESS_CPUTIME_ID:
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clockwhich = LINUX_CPUCLOCK_WHICH(args->which);
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switch (clockwhich) {
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case LINUX_CPUCLOCK_PROF:
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nwhich = CLOCK_PROF;
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break;
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|
case LINUX_CPUCLOCK_VIRT:
|
|
nwhich = CLOCK_VIRTUAL;
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break;
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|
case LINUX_CPUCLOCK_SCHED:
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|
break;
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|
default:
|
|
return (EINVAL);
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|
}
|
|
break;
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|
|
default:
|
|
break;
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|
}
|
|
error = kern_clock_getres(td, nwhich, &ts);
|
|
if (error != 0) {
|
|
LIN_SDT_PROBE1(time, linux_clock_getres, getres_error, error);
|
|
LIN_SDT_PROBE1(time, linux_clock_getres, return, error);
|
|
return (error);
|
|
}
|
|
native_to_linux_timespec(<s, &ts);
|
|
|
|
error = copyout(<s, args->tp, sizeof lts);
|
|
if (error != 0)
|
|
LIN_SDT_PROBE1(time, linux_clock_getres, copyout_error, error);
|
|
|
|
LIN_SDT_PROBE1(time, linux_clock_getres, return, error);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
linux_nanosleep(struct thread *td, struct linux_nanosleep_args *args)
|
|
{
|
|
struct timespec *rmtp;
|
|
struct l_timespec lrqts, lrmts;
|
|
struct timespec rqts, rmts;
|
|
int error, error2;
|
|
|
|
LIN_SDT_PROBE2(time, linux_nanosleep, entry, args->rqtp, args->rmtp);
|
|
|
|
error = copyin(args->rqtp, &lrqts, sizeof lrqts);
|
|
if (error != 0) {
|
|
LIN_SDT_PROBE1(time, linux_nanosleep, copyin_error, error);
|
|
LIN_SDT_PROBE1(time, linux_nanosleep, return, error);
|
|
return (error);
|
|
}
|
|
|
|
if (args->rmtp != NULL)
|
|
rmtp = &rmts;
|
|
else
|
|
rmtp = NULL;
|
|
|
|
error = linux_to_native_timespec(&rqts, &lrqts);
|
|
if (error != 0) {
|
|
LIN_SDT_PROBE1(time, linux_nanosleep, conversion_error, error);
|
|
LIN_SDT_PROBE1(time, linux_nanosleep, return, error);
|
|
return (error);
|
|
}
|
|
error = kern_nanosleep(td, &rqts, rmtp);
|
|
if (args->rmtp != NULL) {
|
|
native_to_linux_timespec(&lrmts, rmtp);
|
|
error2 = copyout(&lrmts, args->rmtp, sizeof(lrmts));
|
|
if (error2 != 0) {
|
|
LIN_SDT_PROBE1(time, linux_nanosleep, copyout_error,
|
|
error2);
|
|
LIN_SDT_PROBE1(time, linux_nanosleep, return, error2);
|
|
return (error2);
|
|
}
|
|
}
|
|
|
|
LIN_SDT_PROBE1(time, linux_nanosleep, return, error);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
linux_clock_nanosleep(struct thread *td, struct linux_clock_nanosleep_args *args)
|
|
{
|
|
struct timespec *rmtp;
|
|
struct l_timespec lrqts, lrmts;
|
|
struct timespec rqts, rmts;
|
|
int error, error2;
|
|
|
|
LIN_SDT_PROBE4(time, linux_clock_nanosleep, entry, args->which,
|
|
args->flags, args->rqtp, args->rmtp);
|
|
|
|
if (args->flags != 0) {
|
|
/* XXX deal with TIMER_ABSTIME */
|
|
LIN_SDT_PROBE1(time, linux_clock_nanosleep, unsupported_flags,
|
|
args->flags);
|
|
LIN_SDT_PROBE1(time, linux_clock_nanosleep, return, EINVAL);
|
|
return (EINVAL); /* XXX deal with TIMER_ABSTIME */
|
|
}
|
|
|
|
if (args->which != LINUX_CLOCK_REALTIME) {
|
|
LIN_SDT_PROBE1(time, linux_clock_nanosleep, unsupported_clockid,
|
|
args->which);
|
|
LIN_SDT_PROBE1(time, linux_clock_nanosleep, return, EINVAL);
|
|
return (EINVAL);
|
|
}
|
|
|
|
error = copyin(args->rqtp, &lrqts, sizeof(lrqts));
|
|
if (error != 0) {
|
|
LIN_SDT_PROBE1(time, linux_clock_nanosleep, copyin_error,
|
|
error);
|
|
LIN_SDT_PROBE1(time, linux_clock_nanosleep, return, error);
|
|
return (error);
|
|
}
|
|
|
|
if (args->rmtp != NULL)
|
|
rmtp = &rmts;
|
|
else
|
|
rmtp = NULL;
|
|
|
|
error = linux_to_native_timespec(&rqts, &lrqts);
|
|
if (error != 0) {
|
|
LIN_SDT_PROBE1(time, linux_clock_nanosleep, conversion_error,
|
|
error);
|
|
LIN_SDT_PROBE1(time, linux_clock_nanosleep, return, error);
|
|
return (error);
|
|
}
|
|
error = kern_nanosleep(td, &rqts, rmtp);
|
|
if (args->rmtp != NULL) {
|
|
/* XXX. Not for TIMER_ABSTIME */
|
|
native_to_linux_timespec(&lrmts, rmtp);
|
|
error2 = copyout(&lrmts, args->rmtp, sizeof(lrmts));
|
|
if (error2 != 0) {
|
|
LIN_SDT_PROBE1(time, linux_clock_nanosleep,
|
|
copyout_error, error2);
|
|
LIN_SDT_PROBE1(time, linux_clock_nanosleep,
|
|
return, error2);
|
|
return (error2);
|
|
}
|
|
}
|
|
|
|
LIN_SDT_PROBE1(time, linux_clock_nanosleep, return, error);
|
|
return (error);
|
|
}
|