time.c

linux进程跟踪的工具和源代码

/*
 * Copyright (c) 1991, 1992 Paul Kranenburg <[e-mail]>
 * Copyright (c) 1993 Branko Lankester <[e-mail]>
 * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <[e-mail]>
 * All rights reserved.
 *
 * 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.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
 *
 *	$Id: time.c,v 1.4 2000/10/13 12:47:12 wichert Exp $
 */

#include "defs.h"

#ifdef LINUX
#include <linux/version.h>
#include <sys/timex.h>
#endif /* LINUX */

void
printtv(tcp, addr)
struct tcb *tcp;
long addr;
{
	struct timeval tv;

	if (addr == 0)
		tprintf("NULL");
	else if (!verbose(tcp))
		tprintf("%#lx", addr);
	else if (umove(tcp, addr, &tv) < 0)
		tprintf("{...}");
	else
		tprintf("{%lu, %lu}", (long) tv.tv_sec, (long) tv.tv_usec);
}

#ifdef ALPHA
struct timeval32 
{
    unsigned tv_sec;
    unsigned tv_usec;
};

void
printtv32(tcp, addr)
struct tcb *tcp;
long addr;
{
    struct timeval32  tv;

    if (addr == 0)
	tprintf("NULL");
    else if (!verbose(tcp))
	tprintf("%#lx", addr);
    else if (umove(tcp, addr, &tv) < 0)
	tprintf("{...}");
    else
	tprintf("{%u, %u}", tv.tv_sec, tv.tv_usec);
}
#endif


int
sys_time(tcp)
struct tcb *tcp;
{
	if (exiting(tcp)) {
#ifndef SVR4
		printnum(tcp, tcp->u_arg[0], "%ld");
#endif /* SVR4 */
	}
	return 0;
}

int
sys_stime(tcp)
struct tcb *tcp;
{
	if (exiting(tcp)) {
		printnum(tcp, tcp->u_arg[0], "%ld");
	}
	return 0;
}

int
sys_gettimeofday(tcp)
struct tcb *tcp;
{
	if (exiting(tcp)) {
		if (syserror(tcp)) {
			tprintf("%#lx, %#lx",
				tcp->u_arg[0], tcp->u_arg[1]);
			return 0;
		}
		printtv(tcp, tcp->u_arg[0]);
#ifndef SVR4
		tprintf(", ");
		printtv(tcp, tcp->u_arg[1]);
#endif /* !SVR4 */
	}
	return 0;
}


#ifdef ALPHA
int
sys_osf_gettimeofday(tcp)
struct tcb *tcp;
{
    if (exiting(tcp)) {
	if (syserror(tcp)) {
	    tprintf("%#lx, %#lx",
		    tcp->u_arg[0], tcp->u_arg[1]);
	    return 0;
	}
	printtv32(tcp, tcp->u_arg[0]);
#ifndef SVR4
	tprintf(", ");
	printtv32(tcp, tcp->u_arg[1]);
#endif /* !SVR4 */
    }
    return 0;
}
#endif

int
sys_settimeofday(tcp)
struct tcb *tcp;
{
	if (entering(tcp)) {
		printtv(tcp, tcp->u_arg[0]);
#ifndef SVR4
		tprintf(", ");
		printtv(tcp, tcp->u_arg[1]);
#endif /* !SVR4 */
	}
	return 0;
}

#ifdef ALPHA
int
sys_osf_settimeofday(tcp)
struct tcb *tcp;
{
    if (entering(tcp)) {
	printtv32(tcp, tcp->u_arg[0]);
#ifndef SVR4
	tprintf(", ");
	printtv32(tcp, tcp->u_arg[1]);
#endif /* !SVR4 */
    }
    return 0;
}
#endif

int
sys_adjtime(tcp)
struct tcb *tcp;
{
	if (entering(tcp)) {
		printtv(tcp, tcp->u_arg[0]);
		tprintf(", ");
	} else {
		if (syserror(tcp))
			tprintf("%#lx", tcp->u_arg[1]);
		else
			printtv(tcp, tcp->u_arg[1]);
	}
	return 0;
}

static struct xlat which[] = {
	{ ITIMER_REAL,	"ITIMER_REAL"	},
	{ ITIMER_VIRTUAL,"ITIMER_VIRTUAL"},
	{ ITIMER_PROF,	"ITIMER_PROF"	},
	{ 0,		NULL		},
};

static void
printitv(tcp, addr)
struct tcb *tcp;
long addr;
{
	struct itimerval itv;

	if (addr == 0)
		tprintf("NULL");
	else if (!verbose(tcp))
		tprintf("%#lx", addr);
	else if (umove(tcp, addr, &itv) < 0)
		tprintf("{...}");
	else {
		tprintf("{it_interval={%lu, %lu}, it_value={%lu, %lu}}",
		(long) itv.it_interval.tv_sec, (long) itv.it_interval.tv_usec,
		(long) itv.it_value.tv_sec, (long) itv.it_value.tv_usec);
	}
}


#ifdef ALPHA
static void
printitv32(tcp, addr)
struct tcb *tcp;
long addr;
{
    struct itimerval32
    {
	struct timeval32 it_interval;
	struct timeval32 it_value;
    } itv;

    if (addr == 0)
	tprintf("NULL");
    else if (!verbose(tcp))
	tprintf("%#lx", addr);
    else if (umove(tcp, addr, &itv) < 0)
	tprintf("{...}");
    else {
	tprintf("{it_interval={%u, %u}, it_value={%u, %u}}",
		itv.it_interval.tv_sec, itv.it_interval.tv_usec,
		itv.it_value.tv_sec, itv.it_value.tv_usec);
    }
}
#endif

int
sys_getitimer(tcp)
struct tcb *tcp;
{
	if (entering(tcp)) {
		printxval(which, tcp->u_arg[0], "ITIMER_???");
		tprintf(", ");
	} else {
		if (syserror(tcp))
			tprintf("%#lx", tcp->u_arg[1]);
		else
			printitv(tcp, tcp->u_arg[1]);
	}
	return 0;
}


#ifdef ALPHA
int
sys_osf_getitimer(tcp)
struct tcb *tcp;
{
    if (entering(tcp)) {
	printxval(which, tcp->u_arg[0], "ITIMER_???");
	tprintf(", ");
    } else {
	if (syserror(tcp))
	    tprintf("%#lx", tcp->u_arg[1]);
	else
	    printitv32(tcp, tcp->u_arg[1]);
    }
    return 0;
}
#endif

int
sys_setitimer(tcp)
struct tcb *tcp;
{
	if (entering(tcp)) {
		printxval(which, tcp->u_arg[0], "ITIMER_???");
		tprintf(", ");
		printitv(tcp, tcp->u_arg[1]);
		tprintf(", ");
	} else {
		if (syserror(tcp))
			tprintf("%#lx", tcp->u_arg[2]);
		else
			printitv(tcp, tcp->u_arg[2]);
	}
	return 0;
}

#ifdef ALPHA
int
sys_osf_setitimer(tcp)
struct tcb *tcp;
{
    if (entering(tcp)) {
	printxval(which, tcp->u_arg[0], "ITIMER_???");
	tprintf(", ");
	printitv32(tcp, tcp->u_arg[1]);
	tprintf(", ");
    } else {
	if (syserror(tcp))
	    tprintf("%#lx", tcp->u_arg[2]);
	else
	    printitv32(tcp, tcp->u_arg[2]);
    }
    return 0;
}
#endif

#ifdef LINUX

int
sys_adjtimex(tcp)
struct tcb *tcp;
{
	struct timex txc;

	if (exiting(tcp)) {
		if (tcp->u_arg[0] == 0)
			tprintf("NULL");
		else if (syserror(tcp) || !verbose(tcp))
			tprintf("%#lx", tcp->u_arg[0]);
		else if (umove(tcp, tcp->u_arg[0], &txc) < 0)
			tprintf("{...}");
		else {
#if LINUX_VERSION_CODE < 66332
			tprintf("{mode=%d, offset=%ld, frequency=%ld, ",
				txc.mode, txc.offset, txc.frequency);
			tprintf("maxerror=%ld, esterror=%lu, status=%u, ",
				txc.maxerror, txc.esterror, txc.status);
			tprintf("time_constant=%ld, precision=%lu, ",
				txc.time_constant, txc.precision);
			tprintf("tolerance=%ld, time={%lu, %lu}}",
				txc.tolerance, (long) txc.time.tv_sec,
				(long) txc.time.tv_usec);
#else
			tprintf("{modes=%d, offset=%ld, freq=%ld, ",
				txc.modes, txc.offset, txc.freq);
			tprintf("maxerror=%ld, esterror=%lu, status=%u, ",
				txc.maxerror, txc.esterror, txc.status);
			tprintf("constant=%ld, precision=%lu, ",
				txc.constant, txc.precision);
			tprintf("tolerance=%ld, time={%lu, %lu}}",
				txc.tolerance, (long) txc.time.tv_sec,
				(long) txc.time.tv_usec);
			/* there's a bunch of other stuff, but it's not
			 * worth the time or the trouble to include */
#endif
		}
	}
	return 0;
}
#endif /* LINUX */