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/*
* Copyright (C) 2005-2010 Junjiro R. Okajima
*
* This program, aufs is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <sys/types.h>
#include <errno.h>
#include <mntent.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "au_util.h"
#define ProcMounts "/proc/self/mounts"
static void copy_ent(struct mntent *dst, struct mntent *src)
{
free(dst->mnt_opts);
free(dst->mnt_type);
free(dst->mnt_dir);
free(dst->mnt_fsname);
dst->mnt_dir = NULL;
dst->mnt_type = NULL;
dst->mnt_opts = NULL;
dst->mnt_fsname = strdup(src->mnt_fsname);
if (dst->mnt_fsname)
dst->mnt_dir = strdup(src->mnt_dir);
if (dst->mnt_dir)
dst->mnt_type = strdup(src->mnt_type);
if (dst->mnt_type)
dst->mnt_opts = strdup(src->mnt_opts);
if (dst->mnt_opts) {
dst->mnt_freq = src->mnt_freq;
dst->mnt_passno = src->mnt_passno;
} else
AuFin("strdup");
}
int au_proc_getmntent(char *mntpnt, struct mntent *rent)
{
int found;
struct mntent *p;
FILE *fp;
fp = setmntent(ProcMounts, "r");
if (!fp)
AuFin(ProcMounts);
/* find the last one */
memset(rent, 0, sizeof(*rent));
found = 0;
while ((p = getmntent(fp)))
if (!strcmp(p->mnt_dir, mntpnt)) {
Dpri("%s, %s, %s, %s, %d, %d\n",
p->mnt_fsname, p->mnt_dir, p->mnt_type,
p->mnt_opts, p->mnt_freq, p->mnt_passno);
copy_ent(rent, p);
found = 1;
}
endmntent(fp);
if (!found) {
errno = EINVAL;
AuFin("%s", mntpnt);
}
return 0;
}
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