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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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✓✗✗✓
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if (mntsize <= 0 && (mntsize = getfsstat(0, 0, MNT_NOWAIT)) < 0) |
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return (0); |
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✗✓✗✗
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if (bufsize > 0 && (mntsize = getfsstat(mntbuf, bufsize, flags)) < 0) |
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return (0); |
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✓✓ |
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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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✗✓ |
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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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✓✗ |
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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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} |