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/*
* Copyright (C) 2013-2019 Canonical, Ltd.
*
* This program 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 Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* This code is a complete clean re-write of the stress tool by
* Colin Ian King <colin.king@canonical.com> and attempts to be
* backwardly compatible with the stress tool by Amos Waterland
* <apw@rossby.metr.ou.edu> but has more stress tests and more
* functionality.
*
*/
#include "stress-ng.h"
/*
* mount_add()
* add a new mount point to table
*/
static void mount_add(
char *mnts[],
const int max,
int *n,
const char *name)
{
char *mnt;
if (*n >= max)
return;
mnt = strdup(name);
if (!mnt)
return;
mnts[*n] = mnt;
(*n)++;
}
/*
* mount_free()
* free mount info
*/
void mount_free(char *mnts[], const int n)
{
int i;
for (i = 0; i < n; i++) {
free(mnts[i]);
mnts[i] = NULL;
}
}
/*
* mount_get()
* populate mnts with up to max mount points
* from /etc/mtab
*/
#if defined(HAVE_GETMNTINFO)
int mount_get(char *mnts[], const int max)
{
int i, n = 0, ret;
#if defined(__NetBSD__) || defined(__minix__)
struct statvfs *statbufs;
#else
struct statfs *statbufs;
#endif
ret = getmntinfo(&statbufs, 0);
if (ret > max)
ret = max;
for (i = 0; i < ret; i++) {
mount_add(mnts, max, &n, statbufs[i].f_mntonname);
}
return ret;
}
#elif defined(HAVE_GETMNTENT) && defined(HAVE_MNTENT_H)
int mount_get(char *mnts[], const int max)
{
FILE *mounts;
struct mntent* mnt;
int n = 0;
mounts = setmntent("/etc/mtab", "r");
/* Failed, so assume / is available */
if (!mounts) {
mount_add(mnts, max, &n, "/");
return n;
}
while ((mnt = getmntent(mounts)) != NULL)
mount_add(mnts, max, &n, mnt->mnt_dir);
(void)endmntent(mounts);
return n;
}
#else
int mount_get(char *mnts[], const int max)
{
int n = 0;
mount_add(mnts, max, &n, "/");
mount_add(mnts, max, &n, "/dev");
mount_add(mnts, max, &n, "/tmp");
return n;
}
#endif
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