blob: efdfddb2a4add469a0819de970f5ae9c76279a93 [file] [log] [blame]
/*
* Copyright (C) Tildeslash Ltd. All rights reserved.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License version 3.
*
* 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 Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* In addition, as a special exception, the copyright holders give
* permission to link the code of portions of this program with the
* OpenSSL library under certain conditions as described in each
* individual source file, and distribute linked combinations
* including the two.
*
* You must obey the GNU Affero General Public License in all respects
* for all of the code used other than OpenSSL.
*/
/**
* System independent filesystem methods.
*
* @file
*/
#include "config.h"
#ifdef HAVE_STDIO_H
#include <stdio.h>
#endif
#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif
#ifdef HAVE_STRINGS_H
#include <strings.h>
#endif
#ifdef HAVE_STRING_H
#include <string.h>
#endif
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include "monit.h"
#include "device.h"
#include "device_sysdep.h"
/**
* This function validates whether given object is valid for filesystem
* informations statistics and stores path suitable for it in given
* filesystem information structure for later use. Filesystem must be mounted.
*
* Valid objects are file or directory that are part of requested
* filesystem, device or mountpoint.
*
* In the case of file, directory or mountpoint the result is original
* object, in the case of device the mountpoint is returned.
*
* @param inf Information structure where resulting data will be stored
* @param object Identifies appropriate device object
* @return NULL in the case of failure otherwise filesystem path
*/
char *device_path(Info_T inf, char *object) {
struct stat buf;
ASSERT(inf);
ASSERT(object);
if(stat(object, &buf) != 0) {
LogError("%s: Cannot stat '%s' -- %s\n", prog, object, STRERROR);
return NULL;
}
if(S_ISREG(buf.st_mode) || S_ISDIR(buf.st_mode)) {
inf->priv.filesystem.mntpath = Str_dup(object);
return inf->priv.filesystem.mntpath;
} else if(S_ISBLK(buf.st_mode) || S_ISCHR(buf.st_mode)) {
return device_mountpoint_sysdep(inf, object);
}
LogError("%s: Not file, directory or device: '%s'", prog, object);
return NULL;
}
/**
* Filesystem usage statistics. In the case of success the result is stored in the given information structure.
*
* @param inf Information structure where resulting data will be stored
* @param object Identifies requested filesystem - either file, directory, device or mountpoint
* @return TRUE if informations were succesfully read otherwise FALSE
*/
int filesystem_usage(Info_T inf, char *object) {
int rv;
ASSERT(inf);
ASSERT(object);
if(!device_path(inf, object))
return FALSE;
inf->priv.filesystem._flags = inf->priv.filesystem.flags;
rv = filesystem_usage_sysdep(inf);
FREE(inf->priv.filesystem.mntpath);
return rv;
}