294 lines
7.6 KiB
C
294 lines
7.6 KiB
C
/* $NetBSD: linux_misc_notalpha.c,v 1.49 1998/10/04 00:02:37 fvdl Exp $ */
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/*-
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* Copyright (c) 1995, 1998 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 Frank van der Linden and Eric Haszlakiewicz.
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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/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/mman.h>
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#include <sys/mount.h>
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#include <sys/malloc.h>
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#include <sys/mbuf.h>
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#include <sys/namei.h>
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#include <sys/ptrace.h>
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#include <sys/resource.h>
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#include <sys/resourcevar.h>
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#include <sys/wait.h>
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#include <sys/syscallargs.h>
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#include <vm/vm.h>
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#include <vm/vm_param.h>
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#include <compat/linux/common/linux_types.h>
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#include <compat/linux/common/linux_fcntl.h>
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#include <compat/linux/common/linux_misc.h>
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#include <compat/linux/common/linux_mmap.h>
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#include <compat/linux/common/linux_signal.h>
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#include <compat/linux/common/linux_util.h>
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#include <compat/linux/linux_syscallargs.h>
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/*
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* This file contains routines which are used
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* on every linux architechture except the Alpha.
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*/
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/* Used on: arm, i386, m68k, mips, ppc, sparc, sparc64 */
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/* Not used on: alpha */
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/*
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* Alarm. This is a libc call which uses setitimer(2) in NetBSD.
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* Fiddle with the timers to make it work.
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*/
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int
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linux_sys_alarm(p, v, retval)
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struct proc *p;
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void *v;
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register_t *retval;
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{
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struct linux_sys_alarm_args /* {
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syscallarg(unsigned int) secs;
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} */ *uap = v;
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int s;
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struct itimerval *itp, it;
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itp = &p->p_realtimer;
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s = splclock();
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/*
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* Clear any pending timer alarms.
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*/
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untimeout(realitexpire, p);
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timerclear(&itp->it_interval);
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if (timerisset(&itp->it_value) &&
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timercmp(&itp->it_value, &time, >))
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timersub(&itp->it_value, &time, &itp->it_value);
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/*
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* Return how many seconds were left (rounded up)
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*/
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retval[0] = itp->it_value.tv_sec;
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if (itp->it_value.tv_usec)
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retval[0]++;
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/*
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* alarm(0) just resets the timer.
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*/
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if (SCARG(uap, secs) == 0) {
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timerclear(&itp->it_value);
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splx(s);
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return 0;
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}
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/*
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* Check the new alarm time for sanity, and set it.
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*/
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timerclear(&it.it_interval);
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it.it_value.tv_sec = SCARG(uap, secs);
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it.it_value.tv_usec = 0;
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if (itimerfix(&it.it_value) || itimerfix(&it.it_interval)) {
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splx(s);
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return (EINVAL);
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}
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if (timerisset(&it.it_value)) {
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timeradd(&it.it_value, &time, &it.it_value);
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timeout(realitexpire, p, hzto(&it.it_value));
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}
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p->p_realtimer = it;
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splx(s);
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return 0;
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}
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int
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linux_sys_nice(p, v, retval)
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struct proc *p;
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void *v;
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register_t *retval;
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{
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struct linux_sys_nice_args /* {
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syscallarg(int) incr;
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} */ *uap = v;
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struct sys_setpriority_args bsa;
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SCARG(&bsa, which) = PRIO_PROCESS;
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SCARG(&bsa, who) = 0;
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SCARG(&bsa, prio) = SCARG(uap, incr);
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return sys_setpriority(p, &bsa, retval);
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}
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/*
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* The old Linux readdir was only able to read one entry at a time,
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* even though it had a 'count' argument. In fact, the emulation
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* of the old call was better than the original, because it did handle
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* the count arg properly. Don't bother with it anymore now, and use
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* it to distinguish between old and new. The difference is that the
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* newer one actually does multiple entries, and the reclen field
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* really is the reclen, not the namelength.
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*/
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int
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linux_sys_readdir(p, v, retval)
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struct proc *p;
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void *v;
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register_t *retval;
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{
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struct linux_sys_readdir_args /* {
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syscallarg(int) fd;
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syscallarg(struct linux_dirent *) dent;
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syscallarg(unsigned int) count;
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} */ *uap = v;
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SCARG(uap, count) = 1;
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return linux_sys_getdents(p, uap, retval);
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}
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/*
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* I wonder why Linux has gettimeofday() _and_ time().. Still, we
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* need to deal with it.
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*/
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int
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linux_sys_time(p, v, retval)
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struct proc *p;
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void *v;
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register_t *retval;
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{
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struct linux_sys_time_args /* {
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linux_time_t *t;
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} */ *uap = v;
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struct timeval atv;
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linux_time_t tt;
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int error;
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microtime(&atv);
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tt = atv.tv_sec;
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if (SCARG(uap, t) && (error = copyout(&tt, SCARG(uap, t), sizeof tt)))
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return error;
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retval[0] = tt;
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return 0;
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}
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/*
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* utime(). Do conversion to things that utimes() understands,
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* and pass it on.
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*/
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int
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linux_sys_utime(p, v, retval)
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struct proc *p;
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void *v;
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register_t *retval;
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{
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struct linux_sys_utime_args /* {
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syscallarg(char *) path;
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syscallarg(struct linux_utimbuf *)times;
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} */ *uap = v;
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caddr_t sg;
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int error;
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struct sys_utimes_args ua;
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struct timeval tv[2], *tvp;
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struct linux_utimbuf lut;
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sg = stackgap_init(p->p_emul);
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LINUX_CHECK_ALT_EXIST(p, &sg, SCARG(uap, path));
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SCARG(&ua, path) = SCARG(uap, path);
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if (SCARG(uap, times) != NULL) {
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if ((error = copyin(SCARG(uap, times), &lut, sizeof lut)))
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return error;
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tv[0].tv_usec = tv[1].tv_usec = 0;
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tv[0].tv_sec = lut.l_actime;
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tv[1].tv_sec = lut.l_modtime;
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tvp = (struct timeval *) stackgap_alloc(&sg, sizeof(tv));
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if ((error = copyout(tv, tvp, sizeof tv)))
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return error;
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SCARG(&ua, tptr) = tvp;
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}
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else
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SCARG(&ua, tptr) = NULL;
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return sys_utimes(p, &ua, retval);
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}
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/*
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* waitpid(2). Passed on to the NetBSD call, surrounded by code to
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* reserve some space for a NetBSD-style wait status, and converting
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* it to what Linux wants.
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*/
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int
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linux_sys_waitpid(p, v, retval)
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struct proc *p;
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void *v;
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register_t *retval;
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{
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struct linux_sys_waitpid_args /* {
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syscallarg(int) pid;
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syscallarg(int *) status;
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syscallarg(int) options;
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} */ *uap = v;
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struct sys_wait4_args w4a;
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int error, *status, tstat;
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caddr_t sg;
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if (SCARG(uap, status) != NULL) {
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sg = stackgap_init(p->p_emul);
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status = (int *) stackgap_alloc(&sg, sizeof status);
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} else
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status = NULL;
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SCARG(&w4a, pid) = SCARG(uap, pid);
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SCARG(&w4a, status) = status;
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SCARG(&w4a, options) = SCARG(uap, options);
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SCARG(&w4a, rusage) = NULL;
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if ((error = sys_wait4(p, &w4a, retval)))
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return error;
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sigdelset(&p->p_siglist, SIGCHLD);
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if (status != NULL) {
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if ((error = copyin(status, &tstat, sizeof tstat)))
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return error;
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bsd_to_linux_wstat(&tstat);
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return copyout(&tstat, SCARG(uap, status), sizeof tstat);
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}
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return 0;
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}
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