mirror of
https://github.com/ceph/go-ceph
synced 2024-12-19 21:02:12 +00:00
6c944e8b65
In order to avoid external dependencies on implementation details,
this change replaces RBDError with the unexported rbdError. In case
some application really needs access to the integer value, it can use
the pattern
var errno interface{ Errno() int }
if errors.As(err, errno) { ... errno.Errno() ... }
Signed-off-by: Sven Anderson <sven@redhat.com>
84 lines
2.2 KiB
Go
84 lines
2.2 KiB
Go
package rbd
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/*
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#include <errno.h>
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*/
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import "C"
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import (
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"errors"
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"fmt"
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"github.com/ceph/go-ceph/internal/errutil"
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)
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// rbdError represents an error condition returned from the librbd APIs.
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type rbdError int
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func (e rbdError) Error() string {
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errno, s := errutil.FormatErrno(int(e))
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if s == "" {
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return fmt.Sprintf("rbd: ret=%d", errno)
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}
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return fmt.Sprintf("rbd: ret=%d, %s", errno, s)
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}
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func (e rbdError) Errno() int {
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return int(e)
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}
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func getError(err C.int) error {
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if err != 0 {
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if err == -C.ENOENT {
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return ErrNotFound
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}
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return rbdError(err)
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}
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return nil
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}
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// getErrorIfNegative converts a ceph return code to error if negative.
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// This is useful for functions that return a usable positive value on
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// success but a negative error number on error.
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func getErrorIfNegative(ret C.int) error {
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if ret >= 0 {
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return nil
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}
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return getError(ret)
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}
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// Public go errors:
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var (
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// ErrNoIOContext may be returned if an api call requires an IOContext and
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// it is not provided.
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ErrNoIOContext = errors.New("IOContext is missing")
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// ErrNoName may be returned if an api call requires a name and it is
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// not provided.
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ErrNoName = errors.New("RBD image does not have a name")
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// ErrSnapshotNoName may be returned if an api call requires a snapshot
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// name and it is not provided.
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ErrSnapshotNoName = errors.New("RBD snapshot does not have a name")
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// ErrImageNotOpen may be returned if an api call requires an open image handle and one is not provided.
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ErrImageNotOpen = errors.New("RBD image not open")
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// ErrImageIsOpen may be returned if an api call requires a closed image handle and one is not provided.
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ErrImageIsOpen = errors.New("RBD image is open")
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// ErrNotFound may be returned from an api call when the requested item is
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// missing.
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ErrNotFound = errors.New("RBD image not found")
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// ErrNoNamespaceName maye be returned if an api call requires a namespace
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// name and it is not provided.
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ErrNoNamespaceName = errors.New("Namespace value is missing")
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// revive:disable:exported for compatibility with old versions
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RbdErrorImageNotOpen = ErrImageNotOpen
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RbdErrorNotFound = ErrNotFound
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// revive:enable:exported
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)
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// Private errors:
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const (
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errRange = rbdError(-C.ERANGE)
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)
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