trace.c

早期freebsd实现

/*
 * Copyright (c) 1983 Eric P. Allman
 * Copyright (c) 1988, 1993
 *	The Regents of the University of California.  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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
 */

#ifndef lint
static char sccsid[] = "@(#)trace.c	8.2 (Berkeley) 3/14/94";
#endif /* not lint */

# include "sendmail.h"

/*
**  TtSETUP -- set up for trace package.
**
**	Parameters:
**		vect -- pointer to trace vector.
**		size -- number of flags in trace vector.
**		defflags -- flags to set if no value given.
**
**	Returns:
**		none
**
**	Side Effects:
**		environment is set up.
*/

u_char		*tTvect;
int		tTsize;
static char	*DefFlags;

tTsetup(vect, size, defflags)
	u_char *vect;
	int size;
	char *defflags;
{
	tTvect = vect;
	tTsize = size;
	DefFlags = defflags;
}
/*
**  TtFLAG -- process an external trace flag description.
**
**	Parameters:
**		s -- the trace flag.
**
**	Returns:
**		none.
**
**	Side Effects:
**		sets/clears trace flags.
*/

tTflag(s)
	register char *s;
{
	unsigned int first, last;
	register unsigned int i;

	if (*s == '\0')
		s = DefFlags;

	for (;;)
	{
		/* find first flag to set */
		i = 0;
		while (isdigit(*s))
			i = i * 10 + (*s++ - '0');
		first = i;

		/* find last flag to set */
		if (*s == '-')
		{
			i = 0;
			while (isdigit(*++s))
				i = i * 10 + (*s - '0');
		}
		last = i;

		/* find the level to set it to */
		i = 1;
		if (*s == '.')
		{
			i = 0;
			while (isdigit(*++s))
				i = i * 10 + (*s - '0');
		}

		/* clean up args */
		if (first >= tTsize)
			first = tTsize - 1;
		if (last >= tTsize)
			last = tTsize - 1;

		/* set the flags */
		while (first <= last)
			tTvect[first++] = i;

		/* more arguments? */
		if (*s++ == '\0')
			return;
	}
}