// Truncate sets the size of the named object in the pool referenced by
// the given context to size. If this enlarges the object, the new area
// is logically filled with zeroes. If this shrinks the object, the data
// is removed.
func (c *Context) Truncate(name string, size int64) error {
cname := C.CString(name)
defer C.free(unsafe.Pointer(cname))
if cerr := C.rados_trunc(c.ctx, cname, C.uint64_t(size)); cerr != 0 {
return fmt.Errorf("RADOS trunc: %s: %s", name, strerror(cerr))
}
return nil
}
// Truncate sets the size of the named object in the pool referenced by
// the given context to size. If this enlarges the object, the new area
// is logically filled with zeroes. If this shrinks the object, the data
// is removed.
func (c *Context) Truncate(name string, size int64) error {
cname := C.CString(name)
defer C.free(unsafe.Pointer(cname))
if cerr := C.rados_trunc(c.ctx, cname, C.uint64_t(size)); cerr != 0 {
return radosReturnCodeError(cerr)
}
return nil
}
func (r *RadosIoCtx) Trunc(oid string, length uint64) error {
coid := C.CString(oid)
defer func() {
C.free(unsafe.Pointer(coid))
}()
cerr := C.rados_trunc(*r.ctx, coid, C.uint64_t(length))
if cerr < 0 {
return errors.New("resize object failed")
}
return nil
}
// Truncate modifies the size of an object. If the object size in increased, the new space is zero-filled. If the size
// is reduced, the excess data is removed.
func (o *Object) Truncate(size uint64) error {
oid := C.CString(o.name)
defer freeString(oid)
s := C.uint64_t(size)
ret := C.rados_trunc(o.ioContext, oid, s)
if err := toRadosError(ret); err != nil {
err.Message = fmt.Sprintf("Unable to resize object %s to size %d.", o.name, size)
return err
}
return nil
}
// Truncate resizes the object with key oid to size size. If the operation
// enlarges the object, the new area is logically filled with zeroes. If the
// operation shrinks the object, the excess data is removed. It returns an
// error, if any.
func (p *Pool) Truncate(oid string, size uint64) error {
c_oid := C.CString(oid)
defer C.free(unsafe.Pointer(c_oid))
ret := C.rados_trunc(p.ioctx, c_oid, (C.uint64_t)(size))
if ret == 0 {
return nil
} else {
return RadosError(int(ret))
}
}
// Truncate resizes the object with key oid to size size. If the operation
// enlarges the object, the new area is logically filled with zeroes. If the
// operation shrinks the object, the excess data is removed. It returns an
// error, if any.
func (ioctx *IOContext) Truncate(oid string, size uint64) error {
c_oid := C.CString(oid)
defer C.free(unsafe.Pointer(c_oid))
return GetRadosError(C.rados_trunc(ioctx.ioctx, c_oid, (C.uint64_t)(size)))
}
