trace.c

操作系统SunOS 4.1.3版本的源码

/*
 * Copyright (c) 1988 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that this notice is preserved and that due credit is given
 * to the University of California at Berkeley. The name of the University
 * may not be used to endorse or promote products derived from this
 * software without specific prior written permission. This software
 * is provided ``as is'' without express or implied warranty.
 *
 *  Sendmail
 *  Copyright (c) 1983  Eric P. Allman
 *  Berkeley, California
 */

# include "sendmail.h"

SCCSID(@(#)trace.c 1.1 92/07/30 SMI); /* from UCB 5.4 3/13/88 */

/*
**  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;
{
	int first, last;
	register 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;
	}
}