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/*
* Copyright (C) 2017 ~ 2018 Deepin Technology Co., Ltd.
*
* Author: jouyouyun <jouyouwen717@gmail.com>
*
* 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 3 of the License, or
* 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, see <http://www.gnu.org/licenses/>.
*/
package utils
/*
#include <stdlib.h>
#include <sys/statvfs.h>
*/
import "C"
import "unsafe"
import "errors"
type FilesystemInfo struct {
TotalSize uint64 // byte
FreeSize uint64
AvailSize uint64
UsedSize uint64
}
func QueryFilesytemInfo(path string) (*FilesystemInfo, error) {
buf := C.struct_statvfs{}
cpath := C.CString(path)
defer C.free(unsafe.Pointer(cpath))
if C.statvfs(cpath, &buf) != 0 {
return nil, errors.New("Statvfs error.")
}
total := uint64(buf.f_blocks) * uint64(buf.f_frsize)
free := uint64(buf.f_bfree) * uint64(buf.f_frsize)
//Get real avail size instead of free size.
avail := uint64(buf.f_bavail) * uint64(buf.f_frsize)
return &FilesystemInfo{
TotalSize: total,
FreeSize: free,
AvailSize: avail,
UsedSize: total - free,
}, nil
}
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