GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: sbin/mount_ext2fs/../mount/getmntopts.c Lines: 0 47 0.0 %
Date: 2017-11-13 Branches: 0 42 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: getmntopts.c,v 1.12 2015/01/16 06:39:59 deraadt Exp $	*/
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/*	$NetBSD: getmntopts.c,v 1.3 1995/03/18 14:56:58 cgd Exp $	*/
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/*-
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 * Copyright (c) 1994
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 *	The Regents of the University of California.  All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. Neither the name of the University nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 */
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#include <sys/types.h>
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#include <sys/mount.h>
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#include <err.h>
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#include <errno.h>
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#include <fstab.h>
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#include <stdlib.h>
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#include <string.h>
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#include <limits.h>
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#include "mntopts.h"
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int
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getmntopts(const char *optionp, const struct mntopt *m0, int *flagp)
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{
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	char *p, *q;
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	union mntval val;
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	int ret = 0;
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	p = q = strdup(optionp);
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	if (p == NULL)
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		err(1, NULL);
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	while (p != NULL) {
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		ret |= getmntopt(&p, &val, m0, flagp);
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	}
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	free(q);
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	return (ret);
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}
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int
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getmntopt(char **optionp, union mntval *valuep, const struct mntopt *m0,
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    int *flagp)
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{
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	const struct mntopt *m;
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	char *opt, *value, *endp;
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	long l;
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	int inverse, negative, needval, ret = 0;
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	/* Pull out the next option. */
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	do {
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		if (*optionp == NULL)
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			return (0);
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		opt = strsep(optionp, ",");
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	} while (opt == NULL || *opt == '\0');
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	/* Check for "no" prefix. */
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	if (opt[0] == 'n' && opt[1] == 'o') {
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		negative = 1;
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		opt += 2;
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	} else
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		negative = 0;
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	/* Stash the value for options with assignments in them. */
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	if ((value = strchr(opt, '=')) != NULL)
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		*value++ = '\0';
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	/* Scan option table. */
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	for (m = m0; m->m_option != NULL; ++m)
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		if (strcasecmp(opt, m->m_option) == 0)
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			break;
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	/* Save flag, or fail if option is not recognised. */
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	if (m->m_option) {
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		needval = (m->m_oflags & (MFLAG_INTVAL|MFLAG_STRVAL)) != 0;
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		if (needval != (value != NULL) && !(m->m_oflags & MFLAG_OPT))
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			errx(1, "-o %s: option %s a value", opt,
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			    needval ? "needs" : "does not need");
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		inverse = (m->m_oflags & MFLAG_INVERSE) ? 1 : 0;
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		if (m->m_oflags & MFLAG_SET) {
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			if (negative == inverse)
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				*flagp |= m->m_flag;
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			else
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				*flagp &= ~m->m_flag;
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		}
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		else if (negative == inverse)
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			ret = m->m_flag;
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	} else
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		errx(1, "-o %s: option not supported", opt);
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	/* Store the value for options with assignments in them. */
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	if (value != NULL) {
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		if (m->m_oflags & MFLAG_INTVAL) {
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			errno = 0;
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			l = strtol(value, &endp, 10);
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			if (endp == value || l < 0 || l > INT_MAX ||
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			    (l == LONG_MAX && errno == ERANGE))
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				errx(1, "%s: illegal value '%s'",
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				    opt, value);
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			valuep->ival = (int)l;
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		} else
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			valuep->strval = value;
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	} else
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		memset(valuep, 0, sizeof(*valuep));
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	return (ret);
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}