freebsd-dev/sys/compat/linux/linux_time.c
Pedro F. Giffuni 7f2d13d607 sys/compat: further adoption of SPDX licensing ID tags.
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
2017-11-27 15:13:23 +00:00

621 lines
18 KiB
C

/* $NetBSD: linux_time.c,v 1.14 2006/05/14 03:40:54 christos Exp $ */
/*-
* SPDX-License-Identifier: BSD-2-Clause-NetBSD
*
* Copyright (c) 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Emmanuel Dreyfus.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#if 0
__KERNEL_RCSID(0, "$NetBSD: linux_time.c,v 1.14 2006/05/14 03:40:54 christos Exp $");
#endif
#include "opt_compat.h"
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/ucred.h>
#include <sys/limits.h>
#include <sys/mount.h>
#include <sys/mutex.h>
#include <sys/resourcevar.h>
#include <sys/sdt.h>
#include <sys/signal.h>
#include <sys/stdint.h>
#include <sys/syscallsubr.h>
#include <sys/sysproto.h>
#include <sys/time.h>
#include <sys/systm.h>
#include <sys/proc.h>
#ifdef COMPAT_LINUX32
#include <machine/../linux32/linux.h>
#include <machine/../linux32/linux32_proto.h>
#else
#include <machine/../linux/linux.h>
#include <machine/../linux/linux_proto.h>
#endif
#include <compat/linux/linux_dtrace.h>
#include <compat/linux/linux_timer.h>
/* DTrace init */
LIN_SDT_PROVIDER_DECLARE(LINUX_DTRACE);
/**
* DTrace probes in this module.
*/
LIN_SDT_PROBE_DEFINE2(time, native_to_linux_timespec, entry,
"struct l_timespec *", "struct timespec *");
LIN_SDT_PROBE_DEFINE0(time, native_to_linux_timespec, return);
LIN_SDT_PROBE_DEFINE2(time, linux_to_native_timespec, entry,
"struct timespec *", "struct l_timespec *");
LIN_SDT_PROBE_DEFINE1(time, linux_to_native_timespec, return, "int");
LIN_SDT_PROBE_DEFINE2(time, linux_to_native_clockid, entry, "clockid_t *",
"clockid_t");
LIN_SDT_PROBE_DEFINE1(time, linux_to_native_clockid, unsupported_clockid,
"clockid_t");
LIN_SDT_PROBE_DEFINE1(time, linux_to_native_clockid, unknown_clockid,
"clockid_t");
LIN_SDT_PROBE_DEFINE1(time, linux_to_native_clockid, return, "int");
LIN_SDT_PROBE_DEFINE2(time, linux_clock_gettime, entry, "clockid_t",
"struct l_timespec *");
LIN_SDT_PROBE_DEFINE1(time, linux_clock_gettime, conversion_error, "int");
LIN_SDT_PROBE_DEFINE1(time, linux_clock_gettime, gettime_error, "int");
LIN_SDT_PROBE_DEFINE1(time, linux_clock_gettime, copyout_error, "int");
LIN_SDT_PROBE_DEFINE1(time, linux_clock_gettime, return, "int");
LIN_SDT_PROBE_DEFINE2(time, linux_clock_settime, entry, "clockid_t",
"struct l_timespec *");
LIN_SDT_PROBE_DEFINE1(time, linux_clock_settime, conversion_error, "int");
LIN_SDT_PROBE_DEFINE1(time, linux_clock_settime, settime_error, "int");
LIN_SDT_PROBE_DEFINE1(time, linux_clock_settime, copyin_error, "int");
LIN_SDT_PROBE_DEFINE1(time, linux_clock_settime, return, "int");
LIN_SDT_PROBE_DEFINE2(time, linux_clock_getres, entry, "clockid_t",
"struct l_timespec *");
LIN_SDT_PROBE_DEFINE0(time, linux_clock_getres, nullcall);
LIN_SDT_PROBE_DEFINE1(time, linux_clock_getres, conversion_error, "int");
LIN_SDT_PROBE_DEFINE1(time, linux_clock_getres, getres_error, "int");
LIN_SDT_PROBE_DEFINE1(time, linux_clock_getres, copyout_error, "int");
LIN_SDT_PROBE_DEFINE1(time, linux_clock_getres, return, "int");
LIN_SDT_PROBE_DEFINE2(time, linux_nanosleep, entry, "const struct l_timespec *",
"struct l_timespec *");
LIN_SDT_PROBE_DEFINE1(time, linux_nanosleep, conversion_error, "int");
LIN_SDT_PROBE_DEFINE1(time, linux_nanosleep, copyout_error, "int");
LIN_SDT_PROBE_DEFINE1(time, linux_nanosleep, copyin_error, "int");
LIN_SDT_PROBE_DEFINE1(time, linux_nanosleep, return, "int");
LIN_SDT_PROBE_DEFINE4(time, linux_clock_nanosleep, entry, "clockid_t", "int",
"struct l_timespec *", "struct l_timespec *");
LIN_SDT_PROBE_DEFINE1(time, linux_clock_nanosleep, conversion_error, "int");
LIN_SDT_PROBE_DEFINE1(time, linux_clock_nanosleep, copyout_error, "int");
LIN_SDT_PROBE_DEFINE1(time, linux_clock_nanosleep, copyin_error, "int");
LIN_SDT_PROBE_DEFINE1(time, linux_clock_nanosleep, unsupported_flags, "int");
LIN_SDT_PROBE_DEFINE1(time, linux_clock_nanosleep, unsupported_clockid, "int");
LIN_SDT_PROBE_DEFINE1(time, linux_clock_nanosleep, return, "int");
int
native_to_linux_timespec(struct l_timespec *ltp, struct timespec *ntp)
{
LIN_SDT_PROBE2(time, native_to_linux_timespec, entry, ltp, ntp);
#ifdef COMPAT_LINUX32
if (ntp->tv_sec > INT_MAX || ntp->tv_sec < INT_MIN)
return (EOVERFLOW);
#endif
ltp->tv_sec = ntp->tv_sec;
ltp->tv_nsec = ntp->tv_nsec;
LIN_SDT_PROBE0(time, native_to_linux_timespec, return);
return (0);
}
int
linux_to_native_timespec(struct timespec *ntp, struct l_timespec *ltp)
{
LIN_SDT_PROBE2(time, linux_to_native_timespec, entry, ntp, ltp);
if (ltp->tv_sec < 0 || ltp->tv_nsec < 0 || ltp->tv_nsec > 999999999) {
LIN_SDT_PROBE1(time, linux_to_native_timespec, return, EINVAL);
return (EINVAL);
}
ntp->tv_sec = ltp->tv_sec;
ntp->tv_nsec = ltp->tv_nsec;
LIN_SDT_PROBE1(time, linux_to_native_timespec, return, 0);
return (0);
}
int
native_to_linux_itimerspec(struct l_itimerspec *ltp, struct itimerspec *ntp)
{
int error;
error = native_to_linux_timespec(&ltp->it_interval, &ntp->it_interval);
if (error == 0)
error = native_to_linux_timespec(&ltp->it_value, &ntp->it_interval);
return (error);
}
int
linux_to_native_itimerspec(struct itimerspec *ntp, struct l_itimerspec *ltp)
{
int error;
error = linux_to_native_timespec(&ntp->it_interval, &ltp->it_interval);
if (error == 0)
error = linux_to_native_timespec(&ntp->it_value, &ltp->it_value);
return (error);
}
int
linux_to_native_clockid(clockid_t *n, clockid_t l)
{
LIN_SDT_PROBE2(time, linux_to_native_clockid, entry, n, l);
if (l < 0) {
/* cpu-clock */
if ((l & LINUX_CLOCKFD_MASK) == LINUX_CLOCKFD)
return (EINVAL);
if (LINUX_CPUCLOCK_WHICH(l) >= LINUX_CPUCLOCK_MAX)
return (EINVAL);
if (LINUX_CPUCLOCK_PERTHREAD(l))
*n = CLOCK_THREAD_CPUTIME_ID;
else
*n = CLOCK_PROCESS_CPUTIME_ID;
return (0);
}
switch (l) {
case LINUX_CLOCK_REALTIME:
*n = CLOCK_REALTIME;
break;
case LINUX_CLOCK_MONOTONIC:
*n = CLOCK_MONOTONIC;
break;
case LINUX_CLOCK_REALTIME_COARSE:
*n = CLOCK_REALTIME_FAST;
break;
case LINUX_CLOCK_MONOTONIC_COARSE:
*n = CLOCK_MONOTONIC_FAST;
break;
case LINUX_CLOCK_BOOTTIME:
*n = CLOCK_UPTIME;
break;
case LINUX_CLOCK_MONOTONIC_RAW:
case LINUX_CLOCK_REALTIME_ALARM:
case LINUX_CLOCK_BOOTTIME_ALARM:
case LINUX_CLOCK_SGI_CYCLE:
case LINUX_CLOCK_TAI:
LIN_SDT_PROBE1(time, linux_to_native_clockid,
unsupported_clockid, l);
LIN_SDT_PROBE1(time, linux_to_native_clockid, return, EINVAL);
return (EINVAL);
default:
LIN_SDT_PROBE1(time, linux_to_native_clockid,
unknown_clockid, l);
LIN_SDT_PROBE1(time, linux_to_native_clockid, return, EINVAL);
return (EINVAL);
}
LIN_SDT_PROBE1(time, linux_to_native_clockid, return, 0);
return (0);
}
int
linux_to_native_timerflags(int *nflags, int flags)
{
if (flags & ~LINUX_TIMER_ABSTIME)
return (EINVAL);
*nflags = 0;
if (flags & LINUX_TIMER_ABSTIME)
*nflags |= TIMER_ABSTIME;
return (0);
}
int
linux_clock_gettime(struct thread *td, struct linux_clock_gettime_args *args)
{
struct l_timespec lts;
struct timespec tp;
struct rusage ru;
struct thread *targettd;
struct proc *p;
int error, clockwhich;
clockid_t nwhich = 0; /* XXX: GCC */
pid_t pid;
lwpid_t tid;
LIN_SDT_PROBE2(time, linux_clock_gettime, entry, args->which, args->tp);
error = linux_to_native_clockid(&nwhich, args->which);
if (error != 0) {
LIN_SDT_PROBE1(time, linux_clock_gettime, conversion_error,
error);
LIN_SDT_PROBE1(time, linux_clock_gettime, return, error);
return (error);
}
switch (nwhich) {
case CLOCK_PROCESS_CPUTIME_ID:
clockwhich = LINUX_CPUCLOCK_WHICH(args->which);
pid = LINUX_CPUCLOCK_ID(args->which);
if (pid == 0) {
p = td->td_proc;
PROC_LOCK(p);
} else {
error = pget(pid, PGET_CANSEE, &p);
if (error != 0)
return (EINVAL);
}
switch (clockwhich) {
case LINUX_CPUCLOCK_PROF:
PROC_STATLOCK(p);
calcru(p, &ru.ru_utime, &ru.ru_stime);
PROC_STATUNLOCK(p);
PROC_UNLOCK(p);
timevaladd(&ru.ru_utime, &ru.ru_stime);
TIMEVAL_TO_TIMESPEC(&ru.ru_utime, &tp);
break;
case LINUX_CPUCLOCK_VIRT:
PROC_STATLOCK(p);
calcru(p, &ru.ru_utime, &ru.ru_stime);
PROC_STATUNLOCK(p);
PROC_UNLOCK(p);
TIMEVAL_TO_TIMESPEC(&ru.ru_utime, &tp);
break;
case LINUX_CPUCLOCK_SCHED:
PROC_UNLOCK(p);
error = kern_clock_getcpuclockid2(td, pid,
CPUCLOCK_WHICH_PID, &nwhich);
if (error != 0)
return (EINVAL);
error = kern_clock_gettime(td, nwhich, &tp);
break;
default:
PROC_UNLOCK(p);
return (EINVAL);
}
break;
case CLOCK_THREAD_CPUTIME_ID:
clockwhich = LINUX_CPUCLOCK_WHICH(args->which);
p = td->td_proc;
tid = LINUX_CPUCLOCK_ID(args->which);
if (tid == 0) {
targettd = td;
PROC_LOCK(p);
} else {
targettd = tdfind(tid, p->p_pid);
if (targettd == NULL)
return (EINVAL);
}
switch (clockwhich) {
case LINUX_CPUCLOCK_PROF:
PROC_STATLOCK(p);
thread_lock(targettd);
rufetchtd(targettd, &ru);
thread_unlock(targettd);
PROC_STATUNLOCK(p);
PROC_UNLOCK(p);
timevaladd(&ru.ru_utime, &ru.ru_stime);
TIMEVAL_TO_TIMESPEC(&ru.ru_utime, &tp);
break;
case LINUX_CPUCLOCK_VIRT:
PROC_STATLOCK(p);
thread_lock(targettd);
rufetchtd(targettd, &ru);
thread_unlock(targettd);
PROC_STATUNLOCK(p);
PROC_UNLOCK(p);
TIMEVAL_TO_TIMESPEC(&ru.ru_utime, &tp);
break;
case LINUX_CPUCLOCK_SCHED:
error = kern_clock_getcpuclockid2(td, tid,
CPUCLOCK_WHICH_TID, &nwhich);
PROC_UNLOCK(p);
if (error != 0)
return (EINVAL);
error = kern_clock_gettime(td, nwhich, &tp);
break;
default:
PROC_UNLOCK(p);
return (EINVAL);
}
break;
default:
error = kern_clock_gettime(td, nwhich, &tp);
break;
}
if (error != 0) {
LIN_SDT_PROBE1(time, linux_clock_gettime, gettime_error, error);
LIN_SDT_PROBE1(time, linux_clock_gettime, return, error);
return (error);
}
error = native_to_linux_timespec(&lts, &tp);
if (error != 0)
return (error);
error = copyout(&lts, args->tp, sizeof lts);
if (error != 0)
LIN_SDT_PROBE1(time, linux_clock_gettime, copyout_error, error);
LIN_SDT_PROBE1(time, linux_clock_gettime, return, error);
return (error);
}
int
linux_clock_settime(struct thread *td, struct linux_clock_settime_args *args)
{
struct timespec ts;
struct l_timespec lts;
int error;
clockid_t nwhich = 0; /* XXX: GCC */
LIN_SDT_PROBE2(time, linux_clock_settime, entry, args->which, args->tp);
error = linux_to_native_clockid(&nwhich, args->which);
if (error != 0) {
LIN_SDT_PROBE1(time, linux_clock_settime, conversion_error,
error);
LIN_SDT_PROBE1(time, linux_clock_settime, return, error);
return (error);
}
error = copyin(args->tp, &lts, sizeof lts);
if (error != 0) {
LIN_SDT_PROBE1(time, linux_clock_settime, copyin_error, error);
LIN_SDT_PROBE1(time, linux_clock_settime, return, error);
return (error);
}
error = linux_to_native_timespec(&ts, &lts);
if (error != 0) {
LIN_SDT_PROBE1(time, linux_clock_settime, conversion_error,
error);
LIN_SDT_PROBE1(time, linux_clock_settime, return, error);
return (error);
}
error = kern_clock_settime(td, nwhich, &ts);
if (error != 0)
LIN_SDT_PROBE1(time, linux_clock_settime, settime_error, error);
LIN_SDT_PROBE1(time, linux_clock_settime, return, error);
return (error);
}
int
linux_clock_getres(struct thread *td, struct linux_clock_getres_args *args)
{
struct proc *p;
struct timespec ts;
struct l_timespec lts;
int error, clockwhich;
clockid_t nwhich = 0; /* XXX: GCC */
pid_t pid;
lwpid_t tid;
LIN_SDT_PROBE2(time, linux_clock_getres, entry, args->which, args->tp);
error = linux_to_native_clockid(&nwhich, args->which);
if (error != 0) {
LIN_SDT_PROBE1(time, linux_clock_getres, conversion_error,
error);
LIN_SDT_PROBE1(time, linux_clock_getres, return, error);
return (error);
}
/*
* Check user supplied clock id in case of per-process
* or thread-specific cpu-time clock.
*/
switch (nwhich) {
case CLOCK_THREAD_CPUTIME_ID:
tid = LINUX_CPUCLOCK_ID(args->which);
if (tid != 0) {
p = td->td_proc;
if (tdfind(tid, p->p_pid) == NULL)
return (ESRCH);
PROC_UNLOCK(p);
}
break;
case CLOCK_PROCESS_CPUTIME_ID:
pid = LINUX_CPUCLOCK_ID(args->which);
if (pid != 0) {
error = pget(pid, PGET_CANSEE, &p);
if (error != 0)
return (EINVAL);
PROC_UNLOCK(p);
}
break;
}
if (args->tp == NULL) {
LIN_SDT_PROBE0(time, linux_clock_getres, nullcall);
LIN_SDT_PROBE1(time, linux_clock_getres, return, 0);
return (0);
}
switch (nwhich) {
case CLOCK_THREAD_CPUTIME_ID:
case CLOCK_PROCESS_CPUTIME_ID:
clockwhich = LINUX_CPUCLOCK_WHICH(args->which);
switch (clockwhich) {
case LINUX_CPUCLOCK_PROF:
nwhich = CLOCK_PROF;
break;
case LINUX_CPUCLOCK_VIRT:
nwhich = CLOCK_VIRTUAL;
break;
case LINUX_CPUCLOCK_SCHED:
break;
default:
return (EINVAL);
}
break;
default:
break;
}
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);
}
error = native_to_linux_timespec(&lts, &ts);
if (error != 0)
return (error);
error = copyout(&lts, 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 (error == EINTR && args->rmtp != NULL) {
error2 = native_to_linux_timespec(&lrmts, rmtp);
if (error2 != 0)
return (error2);
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, flags;
clockid_t clockid;
LIN_SDT_PROBE4(time, linux_clock_nanosleep, entry, args->which,
args->flags, args->rqtp, args->rmtp);
error = linux_to_native_timerflags(&flags, args->flags);
if (error != 0) {
LIN_SDT_PROBE1(time, linux_clock_nanosleep, unsupported_flags,
args->flags);
LIN_SDT_PROBE1(time, linux_clock_nanosleep, return, error);
return (error);
}
error = linux_to_native_clockid(&clockid, args->which);
if (error != 0) {
LIN_SDT_PROBE1(time, linux_clock_nanosleep, unsupported_clockid,
args->which);
LIN_SDT_PROBE1(time, linux_clock_settime, return, error);
return (error);
}
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_clock_nanosleep(td, clockid, flags, &rqts, rmtp);
if (error == EINTR && (flags & TIMER_ABSTIME) == 0 &&
args->rmtp != NULL) {
error2 = native_to_linux_timespec(&lrmts, rmtp);
if (error2 != 0)
return (error2);
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);
}