go-ceph/cephfs/statfs.go

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package cephfs
/*
#cgo LDFLAGS: -lcephfs
#cgo CPPFLAGS: -D_FILE_OFFSET_BITS=64
#include <stdlib.h>
#include <cephfs/libcephfs.h>
*/
import "C"
import (
"unsafe"
)
// CephStatVFS instances are returned from the StatFS call. It reports
// file-system wide statistics.
type CephStatVFS struct {
// Bsize reports the file system's block size.
Bsize int64
// Fragment reports the file system's fragment size.
Frsize int64
// Blocks reports the number of blocks in the file system.
Blocks uint64
// Bfree reports the number of free blocks.
Bfree uint64
// Bavail reports the number of free blocks for unprivileged users.
Bavail uint64
// Files reports the number of inodes in the file system.
Files uint64
// Ffree reports the number of free indoes.
Ffree uint64
// Favail reports the number of free indoes for unprivileged users.
Favail uint64
// Fsid reports the file system ID number.
Fsid int64
// Flag reports the file system mount flags.
Flag int64
// Namemax reports the maximum file name length.
Namemax int64
}
// StatFS returns file system wide statistics.
// NOTE: Many of the statistics fields reported by ceph are not filled in with
// useful values.
//
// Implements:
//
// int ceph_statfs(struct ceph_mount_info *cmount, const char *path, struct statvfs *stbuf);
func (mount *MountInfo) StatFS(path string) (*CephStatVFS, error) {
if err := mount.validate(); err != nil {
return nil, err
}
cPath := C.CString(path)
defer C.free(unsafe.Pointer(cPath))
var statvfs C.struct_statvfs
ret := C.ceph_statfs(mount.mount, cPath, &statvfs)
if ret != 0 {
return nil, getError(ret)
}
csfs := &CephStatVFS{
Bsize: int64(statvfs.f_bsize),
Frsize: int64(statvfs.f_frsize),
Blocks: uint64(statvfs.f_blocks),
Bfree: uint64(statvfs.f_bfree),
Bavail: uint64(statvfs.f_bavail),
Files: uint64(statvfs.f_files),
Ffree: uint64(statvfs.f_ffree),
Favail: uint64(statvfs.f_favail),
Fsid: int64(statvfs.f_fsid),
Flag: int64(statvfs.f_flag),
Namemax: int64(statvfs.f_namemax),
}
return csfs, nil
}