go-ceph/cephfs/conn_nautilus.go
John Mulligan fa5bb0fd69 cephfs: add GetFsCid to implement ceph_get_fs_cid
This function can be used to uniquely id the file system that the
mount object is connecting to.

Signed-off-by: John Mulligan <jmulligan@redhat.com>
2020-02-24 10:18:48 +01:00

31 lines
695 B
Go

// +build !luminous,!mimic
package cephfs
/*
#cgo LDFLAGS: -lcephfs
#cgo CPPFLAGS: -D_FILE_OFFSET_BITS=64
#include <cephfs/libcephfs.h>
*/
import "C"
// Some general connectivity and mounting functions are new in
// Ceph Nautilus.
// GetFsCid returns the cluster ID for a mounted ceph file system.
// If the object does not refer to a mounted file system, an error
// will be returned.
//
// Note:
// Only supported in Ceph Nautilus and newer.
//
// Implements:
// int64_t ceph_get_fs_cid(struct ceph_mount_info *cmount);
func (mount *MountInfo) GetFsCid() (int64, error) {
ret := C.ceph_get_fs_cid(mount.mount)
if ret < 0 {
return 0, getError(C.int(ret))
}
return int64(ret), nil
}