linux_timer.c revision 271743
1271743Sbz/*- 2271743Sbz * Copyright (c) 2014 Bjoern A. Zeeb 3271743Sbz * All rights reserved. 4271743Sbz * 5271743Sbz * This software was developed by SRI International and the University of 6271743Sbz * Cambridge Computer Laboratory under DARPA/AFRL contract FA8750-11-C-0249 7271743Sbz * ("MRC2"), as part of the DARPA MRC research programme. 8271743Sbz * 9271743Sbz * Redistribution and use in source and binary forms, with or without 10271743Sbz * modification, are permitted provided that the following conditions 11271743Sbz * are met: 12271743Sbz * 1. Redistributions of source code must retain the above copyright 13271743Sbz * notice, this list of conditions and the following disclaimer. 14271743Sbz * 2. Redistributions in binary form must reproduce the above copyright 15271743Sbz * notice, this list of conditions and the following disclaimer in the 16271743Sbz * documentation and/or other materials provided with the distribution. 17271743Sbz * 18271743Sbz * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19271743Sbz * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20271743Sbz * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21271743Sbz * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22271743Sbz * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23271743Sbz * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24271743Sbz * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25271743Sbz * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26271743Sbz * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27271743Sbz * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28271743Sbz * SUCH DAMAGE. 29271743Sbz */ 30271743Sbz#include <sys/cdefs.h> 31271743Sbz__FBSDID("$FreeBSD: head/sys/compat/linux/linux_timer.c 271743 2014-09-18 08:36:45Z bz $"); 32271743Sbz 33271743Sbz#include "opt_compat.h" 34271743Sbz 35271743Sbz#include <sys/param.h> 36271743Sbz#include <sys/errno.h> 37271743Sbz#include <sys/signal.h> 38271743Sbz#include <sys/syscallsubr.h> 39271743Sbz#include <sys/systm.h> 40271743Sbz#include <sys/time.h> 41271743Sbz#include <sys/types.h> 42271743Sbz 43271743Sbz#ifdef COMPAT_LINUX32 44271743Sbz#include <machine/../linux32/linux.h> 45271743Sbz#include <machine/../linux32/linux32_proto.h> 46271743Sbz#else 47271743Sbz#include <machine/../linux/linux.h> 48271743Sbz#include <machine/../linux/linux_proto.h> 49271743Sbz#endif 50271743Sbz#include <compat/linux/linux_timer.h> 51271743Sbz 52271743Sbzstatic int 53271743Sbzlinux_convert_l_clockid(clockid_t *clock_id) 54271743Sbz{ 55271743Sbz 56271743Sbz switch (*clock_id) { 57271743Sbz case LINUX_CLOCK_REALTIME: 58271743Sbz *clock_id = CLOCK_REALTIME; 59271743Sbz break; 60271743Sbz case LINUX_CLOCK_MONOTONIC: 61271743Sbz *clock_id = CLOCK_MONOTONIC; 62271743Sbz break; 63271743Sbz default: 64271743Sbz return (EINVAL); 65271743Sbz } 66271743Sbz 67271743Sbz return (0); 68271743Sbz} 69271743Sbz 70271743Sbzstatic int 71271743Sbzlinux_convert_l_sigevent(struct l_sigevent *l_sig, struct sigevent *sig) 72271743Sbz{ 73271743Sbz 74271743Sbz CP(*l_sig, *sig, sigev_notify); 75271743Sbz switch (l_sig->sigev_notify) { 76271743Sbz case L_SIGEV_SIGNAL: 77271743Sbz sig->sigev_notify = SIGEV_SIGNAL; 78271743Sbz CP(*l_sig, *sig, sigev_signo); 79271743Sbz PTRIN_CP(*l_sig, *sig, sigev_value.sival_ptr); 80271743Sbz break; 81271743Sbz case L_SIGEV_NONE: 82271743Sbz sig->sigev_notify = SIGEV_NONE; 83271743Sbz break; 84271743Sbz case L_SIGEV_THREAD: 85271743Sbz#if 0 86271743Sbz /* Seems to not be used anywhere (anymore)? */ 87271743Sbz sig->sigev_notify = SIGEV_THREAD; 88271743Sbz return (ENOSYS); 89271743Sbz#else 90271743Sbz return (EINVAL); 91271743Sbz#endif 92271743Sbz case L_SIGEV_THREAD_ID: 93271743Sbz sig->sigev_notify = SIGEV_THREAD_ID; 94271743Sbz CP2(*l_sig, *sig, _l_sigev_un._tid, sigev_notify_thread_id); 95271743Sbz CP(*l_sig, *sig, sigev_signo); 96271743Sbz PTRIN_CP(*l_sig, *sig, sigev_value.sival_ptr); 97271743Sbz break; 98271743Sbz default: 99271743Sbz return (EINVAL); 100271743Sbz } 101271743Sbz return (0); 102271743Sbz} 103271743Sbz 104271743Sbzint 105271743Sbzlinux_timer_create(struct thread *td, struct linux_timer_create_args *uap) 106271743Sbz{ 107271743Sbz struct l_sigevent l_ev; 108271743Sbz struct sigevent ev, *evp; 109271743Sbz int error, id; 110271743Sbz 111271743Sbz if (uap->evp == NULL) { 112271743Sbz evp = NULL; 113271743Sbz } else { 114271743Sbz error = copyin(uap->evp, &l_ev, sizeof(l_ev)); 115271743Sbz if (error != 0) 116271743Sbz return (error); 117271743Sbz error = linux_convert_l_sigevent(&l_ev, &ev); 118271743Sbz if (error != 0) 119271743Sbz return (error); 120271743Sbz evp = &ev; 121271743Sbz } 122271743Sbz error = linux_convert_l_clockid(&uap->clock_id); 123271743Sbz if (error != 0) 124271743Sbz return (error); 125271743Sbz error = kern_ktimer_create(td, uap->clock_id, evp, &id, -1); 126271743Sbz if (error == 0) { 127271743Sbz error = copyout(&id, uap->timerid, sizeof(int)); 128271743Sbz if (error != 0) 129271743Sbz kern_ktimer_delete(td, id); 130271743Sbz } 131271743Sbz return (error); 132271743Sbz} 133271743Sbz 134271743Sbzint 135271743Sbzlinux_timer_settime(struct thread *td, struct linux_timer_settime_args *uap) 136271743Sbz{ 137271743Sbz struct l_itimerspec l_val, l_oval; 138271743Sbz struct itimerspec val, oval, *ovalp; 139271743Sbz int error; 140271743Sbz 141271743Sbz error = copyin(uap->new, &l_val, sizeof(l_val)); 142271743Sbz if (error != 0) 143271743Sbz return (error); 144271743Sbz ITS_CP(l_val, val); 145271743Sbz ovalp = uap->old != NULL ? &oval : NULL; 146271743Sbz error = kern_ktimer_settime(td, uap->timerid, uap->flags, &val, ovalp); 147271743Sbz if (error == 0 && uap->old != NULL) { 148271743Sbz ITS_CP(oval, l_oval); 149271743Sbz error = copyout(&l_oval, uap->old, sizeof(l_oval)); 150271743Sbz } 151271743Sbz return (error); 152271743Sbz} 153271743Sbz 154271743Sbzint 155271743Sbzlinux_timer_gettime(struct thread *td, struct linux_timer_gettime_args *uap) 156271743Sbz{ 157271743Sbz struct l_itimerspec l_val; 158271743Sbz struct itimerspec val; 159271743Sbz int error; 160271743Sbz 161271743Sbz error = kern_ktimer_gettime(td, uap->timerid, &val); 162271743Sbz if (error == 0) { 163271743Sbz ITS_CP(val, l_val); 164271743Sbz error = copyout(&l_val, uap->setting, sizeof(l_val)); 165271743Sbz } 166271743Sbz return (error); 167271743Sbz} 168271743Sbz 169271743Sbzint 170271743Sbzlinux_timer_getoverrun(struct thread *td, struct linux_timer_getoverrun_args *uap) 171271743Sbz{ 172271743Sbz 173271743Sbz return (kern_ktimer_getoverrun(td, uap->timerid)); 174271743Sbz} 175271743Sbz 176271743Sbzint 177271743Sbzlinux_timer_delete(struct thread *td, struct linux_timer_delete_args *uap) 178271743Sbz{ 179271743Sbz 180271743Sbz return (kern_ktimer_delete(td, uap->timerid)); 181271743Sbz} 182271743Sbz 183