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Add a parameter 'action' to mpfree() so it can optionally discard
or keep the memory pointed at by the char ** parameter.

Allows mpfree() to be used against the global mountpoints[] and
eliminates a couple of manual loops to free the current contents
of mountpoints[].

No intentional functional change.

/*	$OpenBSD: extern.h,v 1.36 2023/06/21 12:50:09 krw Exp $	*/

/*
 * Copyright (c) 2003 Theo de Raadt <deraadt@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#define MEG(x)	((x) * 1024LL * (1024 / DEV_BSIZE))
#define GIG(x)  (MEG(x) * 1024LL)

/* 'actions' for mpfree(). */
#define	DISCARD	0
#define	KEEP	1

u_short	dkcksum(const struct disklabel *);
char	canonical_unit(const struct disklabel *, char);
double	scale(u_int64_t, char, const struct disklabel *);
void	display(FILE *, const struct disklabel *, char, int);
void	display_partition(FILE *, const struct disklabel *, int, char);
int	duid_parse(struct disklabel *, char *);

int	editor(int);
int	editor_allocspace(struct disklabel *);
void	mpsave(const struct disklabel *);
void	mpcopy(char **, char **);
void	mpfree(char **, int);
void	parse_autotable(char *);

int	writelabel(int, struct disklabel *);
extern  char *dkname, *specname, *fstabfile;
extern	char *mountpoints[MAXPARTITIONS];
extern  int aflag, dflag, uidflag;
extern  int donothing;
extern	int verbose;
extern	int quiet;
extern	struct disklabel lab;