GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libc/gen/getmntinfo.c Lines: 10 15 66.7 %
Date: 2017-11-07 Branches: 7 14 50.0 %

Line Branch Exec Source
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/*	$OpenBSD: getmntinfo.c,v 1.10 2015/09/14 16:09:13 tedu Exp $ */
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/*
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 * Copyright (c) 1989, 1993
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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 <stdlib.h>
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/*
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 * Return information about mounted filesystems.
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 */
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int
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getmntinfo(struct statfs **mntbufp, int flags)
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{
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	static struct statfs *mntbuf;
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	static int mntsize;
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	static size_t bufsize;
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	if (mntsize <= 0 && (mntsize = getfsstat(0, 0, MNT_NOWAIT)) < 0)
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		return (0);
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	if (bufsize > 0 && (mntsize = getfsstat(mntbuf, bufsize, flags)) < 0)
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		return (0);
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	while (bufsize <= mntsize * sizeof(struct statfs)) {
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		free(mntbuf);
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		bufsize = (mntsize + 1) * sizeof(struct statfs);
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		if ((mntbuf = malloc(bufsize)) == 0) {
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			bufsize = 0;
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			return (0);
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		}
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		if ((mntsize = getfsstat(mntbuf, bufsize, flags)) < 0)
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			return (0);
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	}
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	*mntbufp = mntbuf;
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	return (mntsize);
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}