GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.sbin/amd/amd/mtab.c Lines: 0 38 0.0 %
Date: 2017-11-13 Branches: 0 14 0.0 %

Line Branch Exec Source
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/*
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 * Copyright (c) 1989, 1990 Jan-Simon Pendry
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 * Copyright (c) 1989, 1990 Imperial College of Science, Technology & Medicine
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 * Copyright (c) 1989, 1990, 1993
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 *	The Regents of the University of California.  All rights reserved.
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 *
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 * This code is derived from software contributed to Berkeley by
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 * Jan-Simon Pendry at Imperial College, London.
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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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 *	from: @(#)mtab.c	8.1 (Berkeley) 6/6/93
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 *	$Id: mtab.c,v 1.7 2014/10/20 06:55:59 guenther Exp $
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 */
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#include "am.h"
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/*
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 * Firewall /etc/mtab entries
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 */
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void
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mnt_free(struct mntent *mp)
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{
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	free(mp->mnt_fsname);
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	free(mp->mnt_dir);
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	free(mp->mnt_type);
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	free(mp->mnt_opts);
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	free(mp);
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}
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/*
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 * Discard memory allocated for mount list
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 */
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void
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discard_mntlist(mntlist *mp)
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{
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	mntlist *mp2;
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	while ((mp2 = mp)) {
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		mp = mp->mnext;
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		if (mp2->mnt)
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			mnt_free(mp2->mnt);
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		free(mp2);
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	}
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}
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/*
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 * Throw away a mount list
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 */
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void
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free_mntlist(mntlist *mp)
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{
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	discard_mntlist(mp);
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}
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/*
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 * Utility routine which determines the value of a
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 * numeric option in the mount options (such as port=%d).
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 * Returns 0 if the option is not specified.
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 */
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int
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hasmntval(struct mntent *mnt, char *opt)
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{
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	char *str = hasmntopt(mnt, opt);
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	if (str) {
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		char *eq = strchr(str, '=');
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		if (eq)
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			return atoi(eq+1);
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		else
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			plog(XLOG_USER, "bad numeric option \"%s\" in \"%s\"", opt, str);
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	}
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	return 0;
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}
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static struct mntent *
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mnt_dup(struct statfs *mp)
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{
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	struct mntent *new_mp = ALLOC(mntent);
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	new_mp->mnt_fsname = strdup(mp->f_mntfromname);
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	new_mp->mnt_dir = strdup(mp->f_mntonname);
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	new_mp->mnt_type = strdup(mp->f_fstypename);
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	new_mp->mnt_opts = strdup("unset");
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	new_mp->mnt_freq = 0;
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	new_mp->mnt_passno = 0;
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	return new_mp;
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}
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/*
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 * Read a mount table into memory
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 */
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mntlist *
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read_mtab(char *fs)
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{
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	mntlist **mpp, *mhp;
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	struct statfs *mntbufp, *mntp;
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	int nloc = getmntinfo(&mntbufp, MNT_NOWAIT);
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	if (nloc == 0) {
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		plog(XLOG_ERROR, "Can't read mount table");
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		return 0;
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	}
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	mpp = &mhp;
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	for (mntp = mntbufp; mntp < mntbufp + nloc; mntp++) {
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		/*
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		 * Allocate a new slot
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		 */
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		*mpp = ALLOC(mntlist);
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		/*
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		 * Copy the data returned by getmntent
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		 */
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		(*mpp)->mnt = mnt_dup(mntp);
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		/*
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		 * Move to next pointer
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		 */
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		mpp = &(*mpp)->mnext;
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	}
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	/*
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	 * Terminate the list
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	 */
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	*mpp = 0;
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	return mhp;
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}