108 lines
3.3 KiB
C
108 lines
3.3 KiB
C
/* $NetBSD: sys_machdep.c,v 1.3 1994/10/26 08:25:18 cgd Exp $ */
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/*-
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* William Jolitz.
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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 University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)sys_machdep.c 5.5 (Berkeley) 1/19/91
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*/
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#include "param.h"
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#include "systm.h"
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#include "ioctl.h"
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#include "file.h"
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#include "time.h"
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#include "proc.h"
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#include "uio.h"
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#include "kernel.h"
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#include "mtio.h"
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#include "buf.h"
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#include "trace.h"
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#ifdef TRACE
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int nvualarm;
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vtrace(p, uap, retval)
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struct proc *p;
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register struct vtrace_args /* {
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syscallarg(int) request;
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syscallarg(int) value;
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} */ *uap;
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register_t *retval;
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{
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int vdoualarm();
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switch (SCARG(uap, request)) {
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case VTR_DISABLE: /* disable a trace point */
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case VTR_ENABLE: /* enable a trace point */
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if (SCARG(uap, value) < 0 || SCARG(uap, value) >= TR_NFLAGS)
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return (EINVAL);
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*retval = traceflags[SCARG(uap, value)];
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traceflags[SCARG(uap, value)] = SCARG(uap, request);
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break;
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case VTR_VALUE: /* return a trace point setting */
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if (SCARG(uap, value) < 0 || SCARG(uap, value) >= TR_NFLAGS)
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return (EINVAL);
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*retval = traceflags[SCARG(uap, value)];
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break;
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case VTR_UALARM: /* set a real-time ualarm, less than 1 min */
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if (SCARG(uap, value) <= 0 || SCARG(uap, value) > 60 * hz ||
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nvualarm > 5)
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return (EINVAL);
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nvualarm++;
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timeout(vdoualarm, (caddr_t)p->p_pid, SCARG(uap, value));
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break;
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case VTR_STAMP:
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trace(TR_STAMP, SCARG(uap, value), p->p_pid);
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break;
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}
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return (0);
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}
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vdoualarm(arg)
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int arg;
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{
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register struct proc *p;
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p = pfind(arg);
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if (p)
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psignal(p, 16);
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nvualarm--;
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}
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#endif
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