options.h

/*
 * This file is part of ltrace.
 * Copyright (C) 2012,2013 Petr Machata, Red Hat Inc.
 * Copyright (C) 2009,2010 Joe Damato
 * Copyright (C) 1998,2002,2008 Juan Cespedes
 * Copyright (C) 2006 Ian Wienand
 * Copyright (C) 2006 Steve Fink
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 */
#ifndef _OPTIONS_H_
#define _OPTIONS_H_

#include <stdio.h>
#include <sys/types.h>
#include <sys/time.h>

#include "forward.h"
#include "vect.h"

struct options_t {
	int align;      /* -a: default alignment column for results */
	char * user;    /* -u: username to run command as */
	int syscalls;   /* -S: display system calls */
	int demangle;   /* -C: demangle low-level names into user-level names */
	int indent;     /* -n: indent trace output according to program flow */
	FILE *output;   /* output to a specific file */
	int summary;    /* count time, calls, and report a summary on program exit */
	int debug;      /* debug */
	size_t arraylen;   /* default maximum # of array elements printed */
	size_t strlen;     /* default maximum # of bytes printed in strings */
	int follow;     /* trace child processes */
	int no_signals; /* don't print signals */
#if defined(HAVE_UNWINDER)
	int bt_depth;	 /* how may levels of stack frames to show */
#endif /* defined(HAVE_UNWINDER) */
	struct filter *plt_filter;
	struct filter *static_filter;

	/* A filter matching library names of libraries, whose
	 * exported symbols we wish to trace.  */
	struct filter *export_filter;

	int hide_caller; /* Whether caller library should be hidden.  */
};
extern struct options_t options;

extern int opt_i;		/* instruction pointer */
extern int opt_r;		/* print relative timestamp */
extern int opt_t;		/* print absolute timestamp */
extern int opt_T;		/* show the time spent inside each call */

struct opt_p_t {
	pid_t pid;
	struct opt_p_t *next;
};

extern struct opt_p_t *opt_p;	/* attach to process with a given pid */

enum opt_F_kind {
	OPT_F_UNKNOWN = 0,
	OPT_F_BROKEN,
	OPT_F_FILE,
	OPT_F_DIR,
};

struct opt_F_t {
	char *pathname;
	int own_pathname : 1;
	enum opt_F_kind kind : 2;
};

/* If entry->kind is OPT_F_UNKNOWN, figure out whether it should be
 * OPT_F_FILE or OPT_F_DIR, cache the result, and return it.  Return
 * OPT_F_BROKEN on failure.  Error message will have been printed in
 * that case.  */
enum opt_F_kind opt_F_get_kind(struct opt_F_t *entry);

/* Destroy and release any memory associated with ENTRY (but don't
 * free ENTRY itself).  */
void opt_F_destroy(struct opt_F_t *entry);

/* PATHS contains colon-separated list of values, akin to enviroment
 * variables PATH, PYTHONPATH, and others.  No escaping is possible.
 * The list is split and added to VEC, which shall be a vector
 * initialized like VECT_INIT(VEC, struct opt_F_t); Returns 0 on
 * success or a negative value on failure.  */
int parse_colon_separated_list(const char *paths, struct vect *vec);

/* Vector of struct opt_F_t.  */
extern struct vect opt_F;

extern char **process_options(int argc, char **argv);

#endif /* _OPTIONS_H_ */