103 lines
3 KiB
C
103 lines
3 KiB
C
/* mounted filesystems, C mini-library
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*
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* Copyright (c) 1980, 1989, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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* Copyright (c) 2001
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* David Rufino <daverufino@btinternet.com>
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* Copyright 2012
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* Joey Hess <id@joeyh.name>
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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 "libmounts.h"
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#ifdef GETMNTENT
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/* direct passthrough the getmntent */
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FILE *mounts_start (void) {
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return setmntent("/etc/mtab", "r");
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}
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int mounts_end (FILE *fp) {
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return endmntent(fp);
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}
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struct mntent *mounts_next (FILE *fp) {
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return getmntent(fp);
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}
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#endif
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#ifdef GETMNTINFO
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/* getmntent emulation using getmntinfo */
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FILE *mounts_start (void) {
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return ((FILE *)0x1); /* dummy non-NULL FILE pointer, not used */
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}
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int mounts_end (FILE *fp) {
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return 1;
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}
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static struct mntent _mntent;
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static struct mntent *statfs_to_mntent (struct statfs *mntbuf) {
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_mntent.mnt_fsname = mntbuf->f_mntfromname;
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_mntent.mnt_dir = mntbuf->f_mntonname;
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_mntent.mnt_type = mntbuf->f_fstypename;
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_mntent.mnt_opts = NULL;
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_mntent.mnt_freq = 0;
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_mntent.mnt_passno = 0;
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return (&_mntent);
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}
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static int pos = -1;
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static int mntsize = -1;
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struct statfs *mntbuf = NULL;
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struct mntent *mounts_next (FILE *fp) {
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if (pos == -1 || mntsize == -1)
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mntsize = getmntinfo(&mntbuf, MNT_NOWAIT);
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++pos;
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if (pos == mntsize) {
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pos = mntsize = -1;
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mntbuf = NULL;
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return NULL;
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}
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return (statfs_to_mntent(&mntbuf[pos]));
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}
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#endif
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#ifdef UNKNOWN
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/* dummy, do-nothing version */
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FILE *mounts_start (void) {
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return ((FILE *)0x1);
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}
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int mounts_end (FILE *fp) {
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return 1;
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}
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struct mntent *mounts_next (FILE *fp) {
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return NULL;
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}
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#endif
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