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/* mounted filesystems, C mini-library
*
* Copyright (c) 1980, 1989, 1993, 1994
* The Regents of the University of California. All rights reserved.
* Copyright (c) 2001
* David Rufino <daverufino@btinternet.com>
* Copyright 2012
* Joey Hess <joey@kitenet.net>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "libmounts.h"
#include <errno.h>
#include <stdio.h>
#ifdef GETMNTENT
/* direct passthrough the getmntent */
FILE *mounts_start (void) {
return setmntent("/etc/mtab", "r");
}
int mounts_end (FILE *fp) {
return endmntent(fp);
}
struct mntent *mounts_next (FILE *fp) {
return getmntent(fp);
}
#endif
#ifdef GETMNTINFO
/* getmntent emulation using getmntinfo */
FILE *mounts_start (void) {
return ((FILE *)0x1); /* dummy non-NULL FILE pointer, not used */
}
int mounts_end (FILE *fp) {
return 1;
}
static struct mntent _mntent;
static struct mntent *statfs_to_mntent (struct statfs *mntbuf) {
_mntent.mnt_fsname = mntbuf->f_mntfromname;
_mntent.mnt_dir = mntbuf->f_mntonname;
_mntent.mnt_type = mntbuf->f_fstypename;
_mntent.mnt_opts = '\0';
_mntent.mnt_freq = 0;
_mntent.mnt_passno = 0;
return (&_mntent);
}
static int pos = -1;
static int mntsize = -1;
struct statfs *mntbuf = NULL;
struct mntent *mounts_next (FILE *fp) {
if (pos == -1 || mntsize == -1)
mntsize = getmntinfo(&mntbuf, MNT_NOWAIT);
++pos;
if (pos == mntsize) {
pos = mntsize = -1;
mntbuf = NULL;
return NULL;
}
return (statfs_to_mntent(&mntbuf[pos]));
}
#endif
#ifdef UNKNOWN
/* dummy, do-nothing version */
FILE *mounts_start (void) {
return ((FILE *)0x1);
}
int mounts_end (FILE *fp) {
return 1;
}
struct mntent *mounts_next (FILE *fp) {
return NULL;
}
#endif
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