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/*
* 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 (c) 2014
* Red Hat, Inc. <http://www.redhat.com>
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. 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.
*/
#if !defined(GF_LINUX_HOST_OS)
#include <stdlib.h>
#include <string.h>
#include <sys/param.h>
#include <sys/ucred.h>
#include <sys/mount.h>
#include "mntent_compat.h"
#ifdef __NetBSD__
typedef struct statvfs gf_statfs_t;
#else
typedef struct statfs gf_statfs_t;
#endif
static int pos = -1;
static int mntsize = -1;
static struct mntent _mntent;
char *
hasmntopt (const struct mntent *mnt, const char *option)
{
int found;
char *opt, *optbuf;
optbuf = strdup(mnt->mnt_opts);
found = 0;
for (opt = optbuf; (opt = strtok(opt, " ")) != NULL; opt = NULL) {
if (!strcasecmp(opt, option)) {
opt = opt - optbuf + mnt->mnt_opts;
free (optbuf);
return (opt);
}
}
free (optbuf);
return (NULL);
}
static char *
concatopt (char *s0, const char *s1)
{
size_t i;
char *cp;
if (s1 == NULL || *s1 == '\0')
return s0;
if (s0 && *s0) {
i = strlen(s0) + strlen(s1) + 1 + 1;
if ((cp = (char *)malloc(i)) == NULL)
return (NULL);
(void)snprintf(cp, i, "%s %s", s0, s1);
} else
cp = strdup(s1);
if (s0)
free(s0);
return (cp);
}
static char *
flags2opts (int flags)
{
char *res;
res = NULL;
res = concatopt(res, (flags & MNT_RDONLY) ? "ro" : "rw");
if (flags & MNT_SYNCHRONOUS) res = concatopt(res, "sync");
if (flags & MNT_NOEXEC) res = concatopt(res, "noexec");
if (flags & MNT_NOSUID) res = concatopt(res, "nosuid");
#if !defined(__FreeBSD__)
if (flags & MNT_NODEV) res = concatopt(res, "nodev");
#endif /* __FreeBSD__ */
if (flags & MNT_UNION) res = concatopt(res, "union");
if (flags & MNT_ASYNC) res = concatopt(res, "async");
#if !defined(GF_DARWIN_HOST_OS)
if (flags & MNT_NOATIME) res = concatopt(res, "noatime");
#if !defined(__NetBSD__)
if (flags & MNT_NOCLUSTERR) res = concatopt(res, "noclusterr");
if (flags & MNT_NOCLUSTERW) res = concatopt(res, "noclusterw");
if (flags & MNT_NOSYMFOLLOW) res = concatopt(res, "nosymfollow");
if (flags & MNT_SUIDDIR) res = concatopt(res, "suiddir");
#endif /* !__NetBSD__ */
#endif /* !GF_DARWIN_HOS_OS */
return res;
}
static struct mntent *
statfs_to_mntent (gf_statfs_t *mntbuf)
{
static char opts_buf[40], *tmp;
int f_flags;
_mntent.mnt_fsname = mntbuf->f_mntfromname;
_mntent.mnt_dir = mntbuf->f_mntonname;
_mntent.mnt_type = mntbuf->f_fstypename;
#ifdef __NetBSD__
f_flags = mntbuf->f_flag;
#else
f_flags = mntbuf->f_flags;
#endif
tmp = flags2opts (f_flags);
if (tmp) {
opts_buf[sizeof(opts_buf)-1] = '\0';
strncpy (opts_buf, tmp, sizeof(opts_buf)-1);
free (tmp);
} else {
*opts_buf = '\0';
}
_mntent.mnt_opts = opts_buf;
_mntent.mnt_freq = _mntent.mnt_passno = 0;
return (&_mntent);
}
struct mntent *
getmntent (FILE *fp)
{
gf_statfs_t *mntbuf;
if (!fp)
return NULL;
if (pos == -1 || mntsize == -1)
mntsize = getmntinfo (&mntbuf, MNT_NOWAIT);
++pos;
if (pos == mntsize) {
pos = mntsize = -1;
return (NULL);
}
return (statfs_to_mntent (&mntbuf[pos]));
}
/*
Careful using this function ``buffer`` and ``bufsize`` are
ignored since there is no stream with strings to populate
them on OSX or NetBSD, if one wishes to populate them then
perhaps a new function should be written in this source file
which uses 'getmntinfo()' to stringify the mntent's
*/
struct mntent *getmntent_r (FILE *fp, struct mntent *result,
char *buffer, int bufsize)
{
struct mntent *ment = NULL;
if (!fp)
return NULL;
flockfile (fp);
ment = getmntent (fp);
memcpy (result, ment, sizeof(*ment));
funlockfile (fp);
return result;
}
FILE *
setmntent (const char *filename, const char *type)
{
FILE *fp = NULL;
#ifdef GF_DARWIN_HOST_OS
fp = fopen (filename, "w");
#else
fp = fopen (filename, type);
#endif
return fp;
}
int
endmntent (FILE *fp)
{
if (fp)
fclose (fp);
return 1; /* endmntent() always returns 1 */
}
#endif /* !GF_LINUX_HOST_OS */
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