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rebase: use go-ceph v0.3.0

Browse Source 
v0.3.0 adds support for rbd.FeatureSet that can be used to parse the
features of an RBD image. This will be used in the followup commit that
adds rbdVolume.getImageInfo().

Signed-off-by: Niels de Vos <ndevos@redhat.com>
This commit is contained in:
Niels de Vos 2020-05-08 16:07:31 +02:00 committed by mergify[bot]
parent 323cc0e3bb
commit 772d1dfa77
23 changed files with 990 additions and 375 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
go.mod
View File

@ -3,7 +3,7 @@ module github.com/ceph/ceph-csi
go 1.13
require (
github.com/ceph/go-ceph v0.2.0
github.com/ceph/go-ceph v0.3.0
github.com/container-storage-interface/spec v1.2.0
github.com/docker/spdystream v0.0.0-20181023171402-6480d4af844c // indirect
github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e // indirect

4
go.sum
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@ -62,8 +62,8 @@ github.com/bradfitz/go-smtpd v0.0.0-20170404230938-deb6d6237625/go.mod h1:HYsPBT
github.com/caddyserver/caddy v1.0.3/go.mod h1:G+ouvOY32gENkJC+jhgl62TyhvqEsFaDiZ4uw0RzP1E=
github.com/cenkalti/backoff v2.1.1+incompatible/go.mod h1:90ReRw6GdpyfrHakVjL/QHaoyV4aDUVVkXQJJJ3NXXM=
github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
github.com/ceph/go-ceph v0.2.0 h1:AMTlFmyU+ipCNj/l41m84c02At/6sP4vuQfCr+CtcsE=
github.com/ceph/go-ceph v0.2.0/go.mod h1:6gzI3dc/5hfl98DIK25fQ0iFSdyCRjVEFTuCoGwvjEY=
github.com/ceph/go-ceph v0.3.0 h1:DBAQTu2GGznczfoiwaRroPttiZe10J8SaHdH3v/0lIE=
github.com/ceph/go-ceph v0.3.0/go.mod h1:6gzI3dc/5hfl98DIK25fQ0iFSdyCRjVEFTuCoGwvjEY=
github.com/cespare/prettybench v0.0.0-20150116022406-03b8cfe5406c/go.mod h1:Xe6ZsFhtM8HrDku0pxJ3/Lr51rwykrzgFwpmTzleatY=
github.com/cespare/xxhash/v2 v2.1.1 h1:6MnRN8NT7+YBpUIWxHtefFZOKTAPgGjpQSxqLNn0+qY=
github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=

64
vendor/github.com/ceph/go-ceph/internal/callbacks/callbacks.go generated vendored Normal file
View File

@ -0,0 +1,64 @@
package callbacks
import (
"sync"
)
// The logic of this file is largely adapted from:
// https://github.com/golang/go/wiki/cgo#function-variables
//
// Also helpful:
// https://eli.thegreenplace.net/2019/passing-callbacks-and-pointers-to-cgo/
// Callbacks provides a tracker for data that is to be passed between Go
// and C callback functions. The Go callback/object may not be passed
// by a pointer to C code and so instead integer indexes into an internal
// map are used.
// Typically the item being added will either be a callback function or
// a data structure containing a callback function. It is up to the caller
// to control and validate what "callbacks" get used.
type Callbacks struct {
mutex sync.RWMutex
cmap map[int]interface{}
}
// New returns a new callbacks tracker.
func New() *Callbacks {
return &Callbacks{cmap: make(map[int]interface{})}
}
// Add a callback/object to the tracker and return a new index
// for the object.
func (cb *Callbacks) Add(v interface{}) int {
cb.mutex.Lock()
defer cb.mutex.Unlock()
// this approach assumes that there are typically very few callbacks
// in play at once and can just use the length of the map as our
// index. But in case of collisions we fall back to simply incrementing
// until we find a free key like in the cgo wiki page.
// If this code ever becomes a hot path there's surely plenty of room
// for optimization in the future :-)
index := len(cb.cmap) + 1
for {
if _, found := cb.cmap[index]; !found {
break
}
index++
}
cb.cmap[index] = v
return index
}
// Remove a callback/object given it's index.
func (cb *Callbacks) Remove(index int) {
cb.mutex.Lock()
defer cb.mutex.Unlock()
delete(cb.cmap, index)
}
// Lookup returns a mapped callback/object given an index.
func (cb *Callbacks) Lookup(index int) interface{} {
cb.mutex.RLock()
defer cb.mutex.RUnlock()
return cb.cmap[index]
}

0
vendor/github.com/ceph/go-ceph/errutil/strerror.go → vendor/github.com/ceph/go-ceph/internal/errutil/strerror.go generated vendored
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52
vendor/github.com/ceph/go-ceph/rados/conn.go generated vendored
View File

@ -7,15 +7,9 @@ import "C"
import (
"bytes"
"errors"
"unsafe"
)
var (
// ErrNotConnected is returned when functions are called without a RADOS connection
ErrNotConnected = errors.New("RADOS not connected")
)
// ClusterStat represents Ceph cluster statistics.
type ClusterStat struct {
Kb uint64
@ -53,7 +47,7 @@ func (c *Conn) PingMonitor(id string) (string, error) {
reply := C.GoStringN(strout, (C.int)(strlen))
return reply, nil
}
return "", RadosError(int(ret))
return "", getError(ret)
}
// Connect establishes a connection to a RADOS cluster. It returns an error,
@ -61,7 +55,7 @@ func (c *Conn) PingMonitor(id string) (string, error) {
func (c *Conn) Connect() error {
ret := C.rados_connect(c.cluster)
if ret != 0 {
return RadosError(int(ret))
return getError(ret)
}
c.connected = true
return nil
@ -80,14 +74,14 @@ func (c *Conn) ReadConfigFile(path string) error {
c_path := C.CString(path)
defer C.free(unsafe.Pointer(c_path))
ret := C.rados_conf_read_file(c.cluster, c_path)
return getRadosError(int(ret))
return getError(ret)
}
// ReadDefaultConfigFile configures the connection using a Ceph configuration
// file located at default locations.
func (c *Conn) ReadDefaultConfigFile() error {
ret := C.rados_conf_read_file(c.cluster, nil)
return getRadosError(int(ret))
return getError(ret)
}
// OpenIOContext creates and returns a new IOContext for the given pool.
@ -103,20 +97,20 @@ func (c *Conn) OpenIOContext(pool string) (*IOContext, error) {
if ret == 0 {
return ioctx, nil
}
return nil, RadosError(int(ret))
return nil, getError(ret)
}
// ListPools returns the names of all existing pools.
func (c *Conn) ListPools() (names []string, err error) {
buf := make([]byte, 4096)
for {
ret := int(C.rados_pool_list(c.cluster,
(*C.char)(unsafe.Pointer(&buf[0])), C.size_t(len(buf))))
ret := C.rados_pool_list(c.cluster,
(*C.char)(unsafe.Pointer(&buf[0])), C.size_t(len(buf)))
if ret < 0 {
return nil, RadosError(int(ret))
return nil, getError(ret)
}
if ret > len(buf) {
if int(ret) > len(buf) {
buf = make([]byte, ret)
continue
}
@ -140,7 +134,7 @@ func (c *Conn) SetConfigOption(option, value string) error {
defer C.free(unsafe.Pointer(c_opt))
defer C.free(unsafe.Pointer(c_val))
ret := C.rados_conf_set(c.cluster, c_opt, c_val)
return getRadosError(int(ret))
return getError(ret)
}
// GetConfigOption returns the value of the Ceph configuration option
@ -165,7 +159,7 @@ func (c *Conn) GetConfigOption(name string) (value string, err error) {
// retrieved.
func (c *Conn) WaitForLatestOSDMap() error {
ret := C.rados_wait_for_latest_osdmap(c.cluster)
return getRadosError(int(ret))
return getError(ret)
}
func (c *Conn) ensure_connected() error {
@ -184,7 +178,7 @@ func (c *Conn) GetClusterStats() (stat ClusterStat, err error) {
c_stat := C.struct_rados_cluster_stat_t{}
ret := C.rados_cluster_stat(c.cluster, &c_stat)
if ret < 0 {
return ClusterStat{}, RadosError(int(ret))
return ClusterStat{}, getError(ret)
}
return ClusterStat{
Kb: uint64(c_stat.kb),
@ -211,28 +205,28 @@ func (c *Conn) ParseCmdLineArgs(args []string) error {
}
ret := C.rados_conf_parse_argv(c.cluster, argc, &argv[0])
return getRadosError(int(ret))
return getError(ret)
}
// ParseDefaultConfigEnv configures the connection from the default Ceph
// environment variable(s).
func (c *Conn) ParseDefaultConfigEnv() error {
ret := C.rados_conf_parse_env(c.cluster, nil)
return getRadosError(int(ret))
return getError(ret)
}
// GetFSID returns the fsid of the cluster as a hexadecimal string. The fsid
// is a unique identifier of an entire Ceph cluster.
func (c *Conn) GetFSID() (fsid string, err error) {
buf := make([]byte, 37)
ret := int(C.rados_cluster_fsid(c.cluster,
(*C.char)(unsafe.Pointer(&buf[0])), C.size_t(len(buf))))
ret := C.rados_cluster_fsid(c.cluster,
(*C.char)(unsafe.Pointer(&buf[0])), C.size_t(len(buf)))
// FIXME: the success case isn't documented correctly in librados.h
if ret == 36 {
fsid = C.GoString((*C.char)(unsafe.Pointer(&buf[0])))
return fsid, nil
}
return "", RadosError(int(ret))
return "", getError(ret)
}
// GetInstanceID returns a globally unique identifier for the cluster
@ -246,8 +240,8 @@ func (c *Conn) GetInstanceID() uint64 {
func (c *Conn) MakePool(name string) error {
c_name := C.CString(name)
defer C.free(unsafe.Pointer(c_name))
ret := int(C.rados_pool_create(c.cluster, c_name))
return getRadosError(int(ret))
ret := C.rados_pool_create(c.cluster, c_name)
return getError(ret)
}
// DeletePool deletes a pool and all the data inside the pool.
@ -257,8 +251,8 @@ func (c *Conn) DeletePool(name string) error {
}
c_name := C.CString(name)
defer C.free(unsafe.Pointer(c_name))
ret := int(C.rados_pool_delete(c.cluster, c_name))
return getRadosError(int(ret))
ret := C.rados_pool_delete(c.cluster, c_name)
return getError(ret)
}
// GetPoolByName returns the ID of the pool with a given name.
@ -329,7 +323,7 @@ func (c *Conn) monCommand(args, inputBuffer []byte) (buffer []byte, info string,
C.free(unsafe.Pointer(outbuf))
}
if ret != 0 {
err = RadosError(int(ret))
err = getError(ret)
return nil, info, err
}
@ -400,7 +394,7 @@ func (c *Conn) pgCommand(pgid []byte, args [][]byte, inputBuffer []byte) (buffer
C.free(unsafe.Pointer(outbuf))
}
if ret != 0 {
err = RadosError(int(ret))
err = getError(ret)
return nil, info, err
}

63
vendor/github.com/ceph/go-ceph/rados/errors.go generated vendored Normal file
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@ -0,0 +1,63 @@
package rados
/*
#include <errno.h>
*/
import "C"
import (
"errors"
"fmt"
"github.com/ceph/go-ceph/internal/errutil"
)
// revive:disable:exported Temporarily live with stuttering
// RadosError represents an error condition returned from the Ceph RADOS APIs.
type RadosError int
// revive:enable:exported
// Error returns the error string for the RadosError type.
func (e RadosError) Error() string {
errno, s := errutil.FormatErrno(int(e))
if s == "" {
return fmt.Sprintf("rados: ret=%d", errno)
}
return fmt.Sprintf("rados: ret=%d, %s", errno, s)
}
func getError(e C.int) error {
if e == 0 {
return nil
}
return RadosError(e)
}
// Public go errors:
var (
// ErrNotConnected is returned when functions are called without a RADOS connection
ErrNotConnected = errors.New("RADOS not connected")
)
// Public RadosErrors:
const (
// ErrNotFound indicates a missing resource.
ErrNotFound = RadosError(-C.ENOENT)
// ErrPermissionDenied indicates a permissions issue.
ErrPermissionDenied = RadosError(-C.EPERM)
// ErrObjectExists indicates that an exclusive object creation failed.
ErrObjectExists = RadosError(-C.EEXIST)
// RadosErrorNotFound indicates a missing resource.
//
// Deprecated: use ErrNotFound instead
RadosErrorNotFound = ErrNotFound
// RadosErrorPermissionDenied indicates a permissions issue.
//
// Deprecated: use ErrPermissionDenied instead
RadosErrorPermissionDenied = ErrPermissionDenied
)

51
vendor/github.com/ceph/go-ceph/rados/ioctx.go generated vendored
View File

@ -90,9 +90,10 @@ type IOContext struct {
ioctx C.rados_ioctx_t
}
// Pointer returns a uintptr representation of the IOContext.
func (ioctx *IOContext) Pointer() uintptr {
return uintptr(ioctx.ioctx)
// Pointer returns a pointer reference to an internal structure.
// This function should NOT be used outside of go-ceph itself.
func (ioctx *IOContext) Pointer() unsafe.Pointer {
return unsafe.Pointer(ioctx.ioctx)
}
// SetNamespace sets the namespace for objects within this IO context (pool).
@ -120,7 +121,7 @@ func (ioctx *IOContext) Create(oid string, exclusive CreateOption) error {
ret := C.rados_write_op_operate(op, ioctx.ioctx, c_oid, nil, 0)
C.rados_release_write_op(op)
return getRadosError(int(ret))
return getError(ret)
}
// Write writes len(data) bytes to the object with key oid starting at byte
@ -139,7 +140,7 @@ func (ioctx *IOContext) Write(oid string, data []byte, offset uint64) error {
(C.size_t)(len(data)),
(C.uint64_t)(offset))
return getRadosError(int(ret))
return getError(ret)
}
// WriteFull writes len(data) bytes to the object with key oid.
@ -152,7 +153,7 @@ func (ioctx *IOContext) WriteFull(oid string, data []byte) error {
ret := C.rados_write_full(ioctx.ioctx, c_oid,
(*C.char)(unsafe.Pointer(&data[0])),
(C.size_t)(len(data)))
return getRadosError(int(ret))
return getError(ret)
}
// Append appends len(data) bytes to the object with key oid.
@ -165,7 +166,7 @@ func (ioctx *IOContext) Append(oid string, data []byte) error {
ret := C.rados_append(ioctx.ioctx, c_oid,
(*C.char)(unsafe.Pointer(&data[0])),
(C.size_t)(len(data)))
return getRadosError(int(ret))
return getError(ret)
}
// Read reads up to len(data) bytes from the object with key oid starting at byte
@ -189,7 +190,7 @@ func (ioctx *IOContext) Read(oid string, data []byte, offset uint64) (int, error
if ret >= 0 {
return int(ret), nil
}
return 0, getRadosError(int(ret))
return 0, getError(ret)
}
// Delete deletes the object with key oid. It returns an error, if any.
@ -197,7 +198,7 @@ func (ioctx *IOContext) Delete(oid string) error {
c_oid := C.CString(oid)
defer C.free(unsafe.Pointer(c_oid))
return getRadosError(int(C.rados_remove(ioctx.ioctx, c_oid)))
return getError(C.rados_remove(ioctx.ioctx, c_oid))
}
// Truncate resizes the object with key oid to size size. If the operation
@ -208,7 +209,7 @@ func (ioctx *IOContext) Truncate(oid string, size uint64) error {
c_oid := C.CString(oid)
defer C.free(unsafe.Pointer(c_oid))
return getRadosError(int(C.rados_trunc(ioctx.ioctx, c_oid, (C.uint64_t)(size))))
return getError(C.rados_trunc(ioctx.ioctx, c_oid, (C.uint64_t)(size)))
}
// Destroy informs librados that the I/O context is no longer in use.
@ -228,7 +229,7 @@ func (ioctx *IOContext) GetPoolStats() (stat PoolStat, err error) {
c_stat := C.struct_rados_pool_stat_t{}
ret := C.rados_ioctx_pool_stat(ioctx.ioctx, &c_stat)
if ret < 0 {
return PoolStat{}, getRadosError(int(ret))
return PoolStat{}, getError(ret)
}
return PoolStat{
Num_bytes: uint64(c_stat.num_bytes),
@ -256,7 +257,7 @@ func (ioctx *IOContext) GetPoolName() (name string, err error) {
buf = make([]byte, len(buf)*2)
continue
} else if ret < 0 {
return "", getRadosError(int(ret))
return "", getError(ret)
}
name = C.GoStringN((*C.char)(unsafe.Pointer(&buf[0])), ret)
return name, nil
@ -276,7 +277,7 @@ func (ioctx *IOContext) ListObjects(listFn ObjectListFunc) error {
var ctx C.rados_list_ctx_t
ret := C.rados_nobjects_list_open(ioctx.ioctx, &ctx)
if ret < 0 {
return getRadosError(int(ret))
return getError(ret)
}
defer func() { C.rados_nobjects_list_close(ctx) }()
@ -286,7 +287,7 @@ func (ioctx *IOContext) ListObjects(listFn ObjectListFunc) error {
if ret == -C.ENOENT {
return nil
} else if ret < 0 {
return getRadosError(int(ret))
return getError(ret)
}
listFn(C.GoString(c_entry))
}
@ -306,7 +307,7 @@ func (ioctx *IOContext) Stat(object string) (stat ObjectStat, err error) {
&c_pmtime)
if ret < 0 {
return ObjectStat{}, getRadosError(int(ret))
return ObjectStat{}, getError(ret)
}
return ObjectStat{
Size: uint64(c_psize),
@ -332,7 +333,7 @@ func (ioctx *IOContext) GetXattr(object string, name string, data []byte) (int,
if ret >= 0 {
return int(ret), nil
}
return 0, getRadosError(int(ret))
return 0, getError(ret)
}
// SetXattr sets an xattr for an object with key `name` with value as `data`
@ -349,7 +350,7 @@ func (ioctx *IOContext) SetXattr(object string, name string, data []byte) error
(*C.char)(unsafe.Pointer(&data[0])),
(C.size_t)(len(data)))
return getRadosError(int(ret))
return getError(ret)
}
// ListXattrs lists all the xattrs for an object. The xattrs are returned as a
@ -362,7 +363,7 @@ func (ioctx *IOContext) ListXattrs(oid string) (map[string][]byte, error) {
ret := C.rados_getxattrs(ioctx.ioctx, c_oid, &it)
if ret < 0 {
return nil, getRadosError(int(ret))
return nil, getError(ret)
}
defer func() { C.rados_getxattrs_end(it) }()
m := make(map[string][]byte)
@ -374,7 +375,7 @@ func (ioctx *IOContext) ListXattrs(oid string) (map[string][]byte, error) {
ret := C.rados_getxattrs_next(it, &c_name, &c_val, &c_len)
if ret < 0 {
return nil, getRadosError(int(ret))
return nil, getError(ret)
}
// rados api returns a null name,val & 0-length upon
// end of iteration
@ -397,7 +398,7 @@ func (ioctx *IOContext) RmXattr(oid string, name string) error {
c_oid,
c_name)
return getRadosError(int(ret))
return getError(ret)
}
// LockExclusive takes an exclusive lock on an object.
@ -444,7 +445,7 @@ func (ioctx *IOContext) LockExclusive(oid, name, cookie, desc string, duration t
case -C.EEXIST:
return int(ret), nil
default:
return int(ret), RadosError(int(ret))
return int(ret), getError(ret)
}
}
@ -495,7 +496,7 @@ func (ioctx *IOContext) LockShared(oid, name, cookie, tag, desc string, duration
case -C.EEXIST:
return int(ret), nil
default:
return int(ret), RadosError(int(ret))
return int(ret), getError(ret)
}
}
@ -524,7 +525,7 @@ func (ioctx *IOContext) Unlock(oid, name, cookie string) (int, error) {
case -C.ENOENT:
return int(ret), nil
default:
return int(ret), RadosError(int(ret))
return int(ret), getError(ret)
}
}
@ -581,7 +582,7 @@ func (ioctx *IOContext) ListLockers(oid, name string) (*LockInfo, error) {
}
if ret < 0 {
return nil, RadosError(int(ret))
return nil, RadosError(ret)
}
return &LockInfo{int(ret), c_exclusive == 1, C.GoString(c_tag), splitCString(c_clients, c_clients_len), splitCString(c_cookies, c_cookies_len), splitCString(c_addrs, c_addrs_len)}, nil
}
@ -617,6 +618,6 @@ func (ioctx *IOContext) BreakLock(oid, name, client, cookie string) (int, error)
case -C.EINVAL: // -EINVAL
return int(ret), nil
default:
return int(ret), RadosError(int(ret))
return int(ret), getError(ret)
}
}

4
vendor/github.com/ceph/go-ceph/rados/object_iter.go generated vendored
View File

@ -20,7 +20,7 @@ type IterToken uint32
func (ioctx *IOContext) Iter() (*Iter, error) {
iter := Iter{}
if cerr := C.rados_nobjects_list_open(ioctx.ioctx, &iter.ctx); cerr < 0 {
return nil, getRadosError(int(cerr))
return nil, getError(cerr)
}
return &iter, nil
}
@ -53,7 +53,7 @@ func (iter *Iter) Next() bool {
var c_entry *C.char
var c_namespace *C.char
if cerr := C.rados_nobjects_list_next(iter.ctx, &c_entry, nil, &c_namespace); cerr < 0 {
iter.err = getRadosError(int(cerr))
iter.err = getError(cerr)
return false
}
iter.entry = C.GoString(c_entry)

12
vendor/github.com/ceph/go-ceph/rados/omap.go generated vendored
View File

@ -63,7 +63,7 @@ func (ioctx *IOContext) SetOmap(oid string, pairs map[string][]byte) error {
ret := C.rados_write_op_operate(op, ioctx.ioctx, c_oid, nil, 0)
C.rados_release_write_op(op)
return getRadosError(int(ret))
return getError(ret)
}
// OmapListFunc is the type of the function called for each omap key
@ -104,9 +104,9 @@ func (ioctx *IOContext) ListOmapValues(oid string, startAfter string, filterPref
ret := C.rados_read_op_operate(op, ioctx.ioctx, c_oid, 0)
if int(ret) != 0 {
return getRadosError(int(ret))
return getError(ret)
} else if int(c_prval) != 0 {
return RadosError(int(c_prval))
return getError(c_prval)
}
for {
@ -117,7 +117,7 @@ func (ioctx *IOContext) ListOmapValues(oid string, startAfter string, filterPref
ret = C.rados_omap_get_next(c_iter, &c_key, &c_val, &c_len)
if int(ret) != 0 {
return getRadosError(int(ret))
return getError(ret)
}
if c_key == nil {
@ -210,7 +210,7 @@ func (ioctx *IOContext) RmOmapKeys(oid string, keys []string) error {
ret := C.rados_write_op_operate(op, ioctx.ioctx, c_oid, nil, 0)
C.rados_release_write_op(op)
return getRadosError(int(ret))
return getError(ret)
}
// CleanOmap clears the omap `oid`
@ -224,5 +224,5 @@ func (ioctx *IOContext) CleanOmap(oid string) error {
ret := C.rados_write_op_operate(op, ioctx.ioctx, c_oid, nil, 0)
C.rados_release_write_op(op)
return getRadosError(int(ret))
return getError(ret)
}

41
vendor/github.com/ceph/go-ceph/rados/rados.go generated vendored
View File

@ -7,37 +7,15 @@ package rados
import "C"
import (
"fmt"
"runtime"
"unsafe"
"github.com/ceph/go-ceph/errutil"
)
// RadosError represents an error condition returned from the Ceph RADOS APIs.
type RadosError int
// Error returns the error string for the RadosError type.
func (e RadosError) Error() string {
errno, s := errutil.FormatErrno(int(e))
if s == "" {
return fmt.Sprintf("rados: ret=%d", errno)
}
return fmt.Sprintf("rados: ret=%d, %s", errno, s)
}
const (
// AllNamespaces is used to reset a selected namespace to all
// namespaces. See the IOContext SetNamespace function.
AllNamespaces = C.LIBRADOS_ALL_NSPACES
// ErrNotFound indicates a missing resource.
ErrNotFound = RadosError(-C.ENOENT)
// ErrPermissionDenied indicates a permissions issue.
ErrPermissionDenied = RadosError(-C.EPERM)
// ErrObjectExists indicates that an exclusive object creation failed.
ErrObjectExists = RadosError(-C.EEXIST)
// FIXME: for backwards compatibility
// RadosAllNamespaces is used to reset a selected namespace to all
@ -45,23 +23,8 @@ const (
//
// Deprecated: use AllNamespaces instead
RadosAllNamespaces = AllNamespaces
// RadosErrorNotFound indicates a missing resource.
//
// Deprecated: use ErrNotFound instead
RadosErrorNotFound = ErrNotFound
// RadosErrorPermissionDenied indicates a permissions issue.
//
// Deprecated: use ErrPermissionDenied instead
RadosErrorPermissionDenied = ErrPermissionDenied
)
func getRadosError(err int) error {
if err == 0 {
return nil
}
return RadosError(err)
}
// Version returns the major, minor, and patch components of the version of
// the RADOS library linked against.
func Version() (int, int, int) {
@ -79,7 +42,7 @@ func newConn(user *C.char) (*Conn, error) {
ret := C.rados_create(&conn.cluster, user)
if ret != 0 {
return nil, RadosError(int(ret))
return nil, getError(ret)
}
runtime.SetFinalizer(conn, freeConn)
@ -112,7 +75,7 @@ func NewConnWithClusterAndUser(clusterName string, userName string) (*Conn, erro
conn := makeConn()
ret := C.rados_create2(&conn.cluster, c_cluster_name, c_name, 0)
if ret != 0 {
return nil, RadosError(int(ret))
return nil, getError(ret)
}
runtime.SetFinalizer(conn, freeConn)

13
vendor/github.com/ceph/go-ceph/rbd/callback_shims.go generated vendored Normal file
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@ -0,0 +1,13 @@
package rbd
/*
#include <rbd/librbd.h>
extern int diffIterateCallback(uint64_t ofs, size_t len, int exists, int index);
int callDiffIterateCallback(uint64_t ofs, size_t len, int exists, int index) {
return diffIterateCallback(ofs, len, exists, index);
}
*/
import "C"

135
vendor/github.com/ceph/go-ceph/rbd/diff_iterate.go generated vendored Normal file
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@ -0,0 +1,135 @@
package rbd
/*
#cgo LDFLAGS: -lrbd
#undef _GNU_SOURCE
#include <errno.h>
#include <stdlib.h>
#include <rbd/librbd.h>
extern int callDiffIterateCallback(uint64_t ofs, size_t len, int exists, int index);
// cgo is having trouble converting the callback from the librbd header
// to a unsafe.Pointer. This shim exists solely to help it along.
static inline int wrap_rbd_diff_iterate2(
rbd_image_t image,
const char *fromsnapname,
uint64_t ofs, uint64_t len,
uint8_t include_parent, uint8_t whole_object,
void *cb,
uintptr_t arg) {
return rbd_diff_iterate2(image, fromsnapname, ofs, len, include_parent, whole_object, cb, (void*)arg);
}
*/
import "C"
import (
"unsafe"
"github.com/ceph/go-ceph/internal/callbacks"
)
var diffIterateCallbacks = callbacks.New()
// DiffIncludeParent values control if the difference should include the parent
// image.
type DiffIncludeParent uint8
// DiffWholeObject values control if the diff extents should cover the whole
// object.
type DiffWholeObject uint8
// DiffIterateCallback defines the function signature needed for the
// DiffIterate callback.
//
// The function will be called with the arguments: offset, length, exists, and
// data. The offset and length correspond to the changed region of the image.
// The exists value is set to zero if the region is known to be zeros,
// otherwise it is set to 1. The data value is the extra data parameter that
// was set on the DiffIterateConfig and is meant to be used for passing
// arbitrary user-defined items to the callback function.
//
// The callback can trigger the iteration to terminate early by returning
// a non-zero error code.
type DiffIterateCallback func(uint64, uint64, int, interface{}) int
// DiffIterateConfig is used to define the parameters of a DiffIterate call.
// Callback, Offset, and Length should always be specified when passed to
// DiffIterate. The other values are optional.
type DiffIterateConfig struct {
SnapName string
Offset uint64
Length uint64
IncludeParent DiffIncludeParent
WholeObject DiffWholeObject
Callback DiffIterateCallback
Data interface{}
}
const (
// ExcludeParent will exclude the parent from the diff.
ExcludeParent = DiffIncludeParent(0)
// IncludeParent will include the parent in the diff.
IncludeParent = DiffIncludeParent(1)
// DisableWholeObject will not use the whole object in the diff.
DisableWholeObject = DiffWholeObject(0)
// EnableWholeObject will use the whole object in the diff.
EnableWholeObject = DiffWholeObject(1)
)
// DiffIterate calls a callback on changed extents of an image.
//
// Calling DiffIterate will cause the callback specified in the
// DiffIterateConfig to be called as many times as there are changed
// regions in the image (controlled by the parameters as passed to librbd).
//
// See the documentation of DiffIterateCallback for a description of the
// arguments to the callback and the return behavior.
//
// Implements:
// int rbd_diff_iterate2(rbd_image_t image,
// const char *fromsnapname,
// uint64_t ofs, uint64_t len,
// uint8_t include_parent, uint8_t whole_object,
// int (*cb)(uint64_t, size_t, int, void *),
// void *arg);
func (image *Image) DiffIterate(config DiffIterateConfig) error {
if err := image.validate(imageIsOpen); err != nil {
return err
}
if config.Callback == nil {
return RBDError(C.EINVAL)
}
var cSnapName *C.char
if config.SnapName != NoSnapshot {
cSnapName = C.CString(config.SnapName)
defer C.free(unsafe.Pointer(cSnapName))
}
cbIndex := diffIterateCallbacks.Add(config)
defer diffIterateCallbacks.Remove(cbIndex)
ret := C.wrap_rbd_diff_iterate2(
image.image,
cSnapName,
C.uint64_t(config.Offset),
C.uint64_t(config.Length),
C.uint8_t(config.IncludeParent),
C.uint8_t(config.WholeObject),
C.callDiffIterateCallback,
C.uintptr_t(cbIndex))
return getError(ret)
}
//export diffIterateCallback
func diffIterateCallback(
offset C.uint64_t, length C.size_t, exists, index C.int) C.int {
v := diffIterateCallbacks.Lookup(int(index))
config := v.(DiffIterateConfig)
return C.int(config.Callback(
uint64(offset), uint64(length), int(exists), config.Data))
}

62
vendor/github.com/ceph/go-ceph/rbd/errors.go generated vendored Normal file
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@ -0,0 +1,62 @@
package rbd
/*
#include <errno.h>
*/
import "C"
import (
"errors"
"fmt"
"github.com/ceph/go-ceph/internal/errutil"
)
// revive:disable:exported Temporarily live with stuttering
// RBDError represents an error condition returned from the librbd APIs.
type RBDError int
// revive:enable:exported
func (e RBDError) Error() string {
errno, s := errutil.FormatErrno(int(e))
if s == "" {
return fmt.Sprintf("rbd: ret=%d", errno)
}
return fmt.Sprintf("rbd: ret=%d, %s", errno, s)
}
func getError(err C.int) error {
if err != 0 {
if err == -C.ENOENT {
return ErrNotFound
}
return RBDError(err)
}
return nil
}
// Public go errors:
var (
// ErrNoIOContext may be returned if an api call requires an IOContext and
// it is not provided.
ErrNoIOContext = errors.New("RBD image does not have an IOContext")
// ErrNoName may be returned if an api call requires a name and it is
// not provided.
ErrNoName = errors.New("RBD image does not have a name")
// ErrSnapshotNoName may be returned if an aip call requires a snapshot
// name and it is not provided.
ErrSnapshotNoName = errors.New("RBD snapshot does not have a name")
// ErrImageNotOpen may be returnened if an api call requires an open image handle and one is not provided.
ErrImageNotOpen = errors.New("RBD image not open")
// ErrNotFound may be returned from an api call when the requested item is
// missing.
ErrNotFound = errors.New("RBD image not found")
// revive:disable:exported for compatibility with old versions
RbdErrorImageNotOpen = ErrImageNotOpen
RbdErrorNotFound = ErrNotFound
// revive:enable:exported
)

176
vendor/github.com/ceph/go-ceph/rbd/features.go generated vendored Normal file
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@ -0,0 +1,176 @@
package rbd
// #cgo LDFLAGS: -lrbd
// #include <rbd/librbd.h>
import "C"
const (
// RBD features, bit values
// FeatureLayering is the representation of RBD_FEATURE_LAYERING from
// librbd
FeatureLayering = uint64(C.RBD_FEATURE_LAYERING)
// FeatureStripingV2 is the representation of RBD_FEATURE_STRIPINGV2
// from librbd
FeatureStripingV2 = uint64(C.RBD_FEATURE_STRIPINGV2)
// FeatureExclusiveLock is the representation of
// RBD_FEATURE_EXCLUSIVE_LOCK from librbd
FeatureExclusiveLock = uint64(C.RBD_FEATURE_EXCLUSIVE_LOCK)
// FeatureObjectMap is the representation of RBD_FEATURE_OBJECT_MAP
// from librbd
FeatureObjectMap = uint64(C.RBD_FEATURE_OBJECT_MAP)
// FeatureFastDiff is the representation of RBD_FEATURE_FAST_DIFF from
// librbd
FeatureFastDiff = uint64(C.RBD_FEATURE_FAST_DIFF)
// FeatureDeepFlatten is the representation of RBD_FEATURE_DEEP_FLATTEN
// from librbd
FeatureDeepFlatten = uint64(C.RBD_FEATURE_DEEP_FLATTEN)
// FeatureJournaling is the representation of RBD_FEATURE_JOURNALING
// from librbd
FeatureJournaling = uint64(C.RBD_FEATURE_JOURNALING)
// FeatureDataPool is the representation of RBD_FEATURE_DATA_POOL from
// librbd
FeatureDataPool = uint64(C.RBD_FEATURE_DATA_POOL)
// RBD features, strings
// FeatureNameLayering is the representation of
// RBD_FEATURE_NAME_LAYERING from librbd
FeatureNameLayering = C.RBD_FEATURE_NAME_LAYERING
// FeatureNameStripingV2 is the representation of
// RBD_FEATURE_NAME_STRIPINGV2 from librbd
FeatureNameStripingV2 = C.RBD_FEATURE_NAME_STRIPINGV2
// FeatureNameExclusiveLock is the representation of
// RBD_FEATURE_NAME_EXCLUSIVE_LOCK from librbd
FeatureNameExclusiveLock = C.RBD_FEATURE_NAME_EXCLUSIVE_LOCK
// FeatureNameObjectMap is the representation of
// RBD_FEATURE_NAME_OBJECT_MAP from librbd
FeatureNameObjectMap = C.RBD_FEATURE_NAME_OBJECT_MAP
// FeatureNameFastDiff is the representation of
// RBD_FEATURE_NAME_FAST_DIFF from librbd
FeatureNameFastDiff = C.RBD_FEATURE_NAME_FAST_DIFF
// FeatureNameDeepFlatten is the representation of
// RBD_FEATURE_NAME_DEEP_FLATTEN from librbd
FeatureNameDeepFlatten = C.RBD_FEATURE_NAME_DEEP_FLATTEN
// FeatureNameJournaling is the representation of
// RBD_FEATURE_NAME_JOURNALING from librbd
FeatureNameJournaling = C.RBD_FEATURE_NAME_JOURNALING
// FeatureNameDataPool is the representation of
// RBD_FEATURE_NAME_DATA_POOL from librbd
FeatureNameDataPool = C.RBD_FEATURE_NAME_DATA_POOL
// old names for backwards compatibility (unused?)
// RbdFeatureLayering deprecated alias for FeatureLayering
RbdFeatureLayering = FeatureLayering
// RbdFeatureStripingV2 deprecated alias for FeatureStripingV2
RbdFeatureStripingV2 = FeatureStripingV2
// RbdFeatureExclusiveLock deprecated alias for FeatureExclusiveLock
RbdFeatureExclusiveLock = FeatureExclusiveLock
// RbdFeatureObjectMap deprecated alias for FeatureObjectMap
RbdFeatureObjectMap = FeatureObjectMap
// RbdFeatureFastDiff deprecated alias for FeatureFastDiff
RbdFeatureFastDiff = FeatureFastDiff
// RbdFeatureDeepFlatten deprecated alias for FeatureDeepFlatten
RbdFeatureDeepFlatten = FeatureDeepFlatten
// RbdFeatureJournaling deprecated alias for FeatureJournaling
RbdFeatureJournaling = FeatureJournaling
// RbdFeatureDataPool deprecated alias for FeatureDataPool
RbdFeatureDataPool = FeatureDataPool
// revive:disable:exported Maybe unused
// the following are probably really unused?
RbdFeaturesDefault = uint64(C.RBD_FEATURES_DEFAULT)
RbdFeaturesIncompatible = uint64(C.RBD_FEATURES_INCOMPATIBLE)
RbdFeaturesRwIncompatible = uint64(C.RBD_FEATURES_RW_INCOMPATIBLE)
RbdFeaturesMutable = uint64(C.RBD_FEATURES_MUTABLE)
RbdFeaturesSingleClient = uint64(C.RBD_FEATURES_SINGLE_CLIENT)
// revive:enable:exported
)
// FeatureSet is a combination of the bit value for multiple featurs.
type FeatureSet uint64
var (
featureNameToBit = map[string]uint64{
FeatureNameLayering: FeatureLayering,
FeatureNameStripingV2: FeatureStripingV2,
FeatureNameExclusiveLock: FeatureExclusiveLock,
FeatureNameObjectMap: FeatureObjectMap,
FeatureNameFastDiff: FeatureFastDiff,
FeatureNameDeepFlatten: FeatureDeepFlatten,
FeatureNameJournaling: FeatureJournaling,
FeatureNameDataPool: FeatureDataPool,
}
)
// FeatureSetFromNames returns a FeatureSet built from flag bits corresponding
// to the provided feature names.
func FeatureSetFromNames(names []string) FeatureSet {
var fs uint64
for _, name := range names {
fs |= featureNameToBit[name]
}
return FeatureSet(fs)
}
// Names converts all of the enabled feature bits in the FeatureSet to
// a slice of strings corresponding to the names for each feature.
func (fs *FeatureSet) Names() []string {
names := []string{}
for name, bit := range featureNameToBit {
if (uint64(*fs) & bit) == bit {
names = append(names, name)
}
}
return names
}
// GetFeatures returns the features bitmask for the rbd image.
//
// Implements:
// int rbd_get_features(rbd_image_t image, uint64_t *features);
func (image *Image) GetFeatures() (features uint64, err error) {
if err := image.validate(imageIsOpen); err != nil {
return 0, err
}
if ret := C.rbd_get_features(image.image, (*C.uint64_t)(&features)); ret < 0 {
return 0, RBDError(ret)
}
return features, nil
}
// UpdateFeatures updates the features on the Image.
//
// Implements:
// int rbd_update_features(rbd_image_t image, uint64_t features,
// uint8_t enabled);
func (image *Image) UpdateFeatures(features uint64, enabled bool) error {
if image.image == nil {
return RbdErrorImageNotOpen
}
cEnabled := C.uint8_t(0)
if enabled {
cEnabled = 1
}
return getError(C.rbd_update_features(image.image, C.uint64_t(features), cEnabled))
}

20
vendor/github.com/ceph/go-ceph/rbd/features_mimic.go generated vendored Normal file
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@ -0,0 +1,20 @@
// +build !luminous
package rbd
// #include <rbd/librbd.h>
import "C"
const (
// FeatureOperations is the representation of RBD_FEATURE_OPERATIONS
// from librbd
FeatureOperations = uint64(C.RBD_FEATURE_OPERATIONS)
// FeatureNameOperations is the representation of
// RBD_FEATURE_NAME_OPERATIONS from librbd
FeatureNameOperations = C.RBD_FEATURE_NAME_OPERATIONS
)
func init() {
featureNameToBit[FeatureNameOperations] = FeatureOperations
}

20
vendor/github.com/ceph/go-ceph/rbd/features_nautilus.go generated vendored Normal file
View File

@ -0,0 +1,20 @@
// +build !luminous,!mimic
package rbd
// #include <rbd/librbd.h>
import "C"
const (
// FeatureMigrating is the representation of RBD_FEATURE_MIGRATING from
// librbd
FeatureMigrating = uint64(C.RBD_FEATURE_MIGRATING)
// FeatureNameMigrating is the representation of
// RBD_FEATURE_NAME_MIGRATING from librbd
FeatureNameMigrating = C.RBD_FEATURE_NAME_MIGRATING
)
func init() {
featureNameToBit[FeatureNameMigrating] = FeatureMigrating
}

107
vendor/github.com/ceph/go-ceph/rbd/options.go generated vendored
View File

@ -12,34 +12,93 @@ import (
const (
// RBD image options.
RbdImageOptionFormat = C.RBD_IMAGE_OPTION_FORMAT
RbdImageOptionFeatures = C.RBD_IMAGE_OPTION_FEATURES
RbdImageOptionOrder = C.RBD_IMAGE_OPTION_ORDER
RbdImageOptionStripeUnit = C.RBD_IMAGE_OPTION_STRIPE_UNIT
RbdImageOptionStripeCount = C.RBD_IMAGE_OPTION_STRIPE_COUNT
RbdImageOptionJournalOrder = C.RBD_IMAGE_OPTION_JOURNAL_ORDER
RbdImageOptionJournalSplayWidth = C.RBD_IMAGE_OPTION_JOURNAL_SPLAY_WIDTH
RbdImageOptionJournalPool = C.RBD_IMAGE_OPTION_JOURNAL_POOL
RbdImageOptionFeaturesSet = C.RBD_IMAGE_OPTION_FEATURES_SET
RbdImageOptionFeaturesClear = C.RBD_IMAGE_OPTION_FEATURES_CLEAR
RbdImageOptionDataPool = C.RBD_IMAGE_OPTION_DATA_POOL
// ImageOptionFormat is the representation of RBD_IMAGE_OPTION_FORMAT from
// librbd
ImageOptionFormat = C.RBD_IMAGE_OPTION_FORMAT
// ImageOptionFeatures is the representation of RBD_IMAGE_OPTION_FEATURES
// from librbd
ImageOptionFeatures = C.RBD_IMAGE_OPTION_FEATURES
// ImageOptionOrder is the representation of RBD_IMAGE_OPTION_ORDER from
// librbd
ImageOptionOrder = C.RBD_IMAGE_OPTION_ORDER
// ImageOptionStripeUnit is the representation of
// RBD_IMAGE_OPTION_STRIPE_UNIT from librbd
ImageOptionStripeUnit = C.RBD_IMAGE_OPTION_STRIPE_UNIT
// ImageOptionStripeCount is the representation of
// RBD_IMAGE_OPTION_STRIPE_COUNT from librbd
ImageOptionStripeCount = C.RBD_IMAGE_OPTION_STRIPE_COUNT
// ImageOptionJournalOrder is the representation of
// RBD_IMAGE_OPTION_JOURNAL_ORDER from librbd
ImageOptionJournalOrder = C.RBD_IMAGE_OPTION_JOURNAL_ORDER
// ImageOptionJournalSplayWidth is the representation of
// RBD_IMAGE_OPTION_JOURNAL_SPLAY_WIDTH from librbd
ImageOptionJournalSplayWidth = C.RBD_IMAGE_OPTION_JOURNAL_SPLAY_WIDTH
// ImageOptionJournalPool is the representation of
// RBD_IMAGE_OPTION_JOURNAL_POOL from librbd
ImageOptionJournalPool = C.RBD_IMAGE_OPTION_JOURNAL_POOL
// ImageOptionFeaturesSet is the representation of
// RBD_IMAGE_OPTION_FEATURES_SET from librbd
ImageOptionFeaturesSet = C.RBD_IMAGE_OPTION_FEATURES_SET
// ImageOptionFeaturesClear is the representation of
// RBD_IMAGE_OPTION_FEATURES_CLEAR from librbd
ImageOptionFeaturesClear = C.RBD_IMAGE_OPTION_FEATURES_CLEAR
// ImageOptionDataPool is the representation of RBD_IMAGE_OPTION_DATA_POOL
// from librbd
ImageOptionDataPool = C.RBD_IMAGE_OPTION_DATA_POOL
// RbdImageOptionFormat deprecated alias for ImageOptionFormat
RbdImageOptionFormat = ImageOptionFormat
// RbdImageOptionFeatures deprecated alias for ImageOptionFeatures
RbdImageOptionFeatures = ImageOptionFeatures
// RbdImageOptionOrder deprecated alias for ImageOptionOrder
RbdImageOptionOrder = ImageOptionOrder
// RbdImageOptionStripeUnit deprecated alias for ImageOptionStripeUnit
RbdImageOptionStripeUnit = ImageOptionStripeUnit
// RbdImageOptionStripeCount deprecated alias for ImageOptionStripeCount
RbdImageOptionStripeCount = ImageOptionStripeCount
// RbdImageOptionJournalOrder deprecated alias for ImageOptionJournalOrder
RbdImageOptionJournalOrder = ImageOptionJournalOrder
// RbdImageOptionJournalSplayWidth deprecated alias for
RbdImageOptionJournalSplayWidth = ImageOptionJournalSplayWidth
// RbdImageOptionJournalPool deprecated alias for ImageOptionJournalPool
RbdImageOptionJournalPool = ImageOptionJournalPool
// RbdImageOptionFeaturesSet deprecated alias for ImageOptionFeaturesSet
RbdImageOptionFeaturesSet = ImageOptionFeaturesSet
// RbdImageOptionFeaturesClear deprecated alias for ImageOptionFeaturesClear
RbdImageOptionFeaturesClear = ImageOptionFeaturesClear
// RbdImageOptionDataPool deprecated alias for ImageOptionDataPool
RbdImageOptionDataPool = ImageOptionDataPool
// introduced with Ceph Mimic
//RbdImageOptionFlatten = C.RBD_IMAGE_OPTION_FLATTEN
)
type RbdImageOptions struct {
// ImageOptions represents a group of configurable image options.
type ImageOptions struct {
options C.rbd_image_options_t
}
type RbdImageOption C.int
// ImageOption values are unique keys for configurable options.
type ImageOption C.int
// revive:disable:exported Deprecated aliases
// RbdImageOptions deprecated alias for ImageOptions
type RbdImageOptions = ImageOptions
// RbdImageOption is a deprecated alias for ImageOption
type RbdImageOption = ImageOption
//revive:enable:exported
// NewRbdImageOptions creates a new RbdImageOptions struct. Call
// RbdImageOptions.Destroy() to free the resources.
//
// Implements:
// void rbd_image_options_create(rbd_image_options_t* opts)
func NewRbdImageOptions() *RbdImageOptions {
rio := &RbdImageOptions{}
func NewRbdImageOptions() *ImageOptions {
rio := &ImageOptions{}
C.rbd_image_options_create(&rio.options)
return rio
}
@ -48,7 +107,7 @@ func NewRbdImageOptions() *RbdImageOptions {
//
// Implements:
// void rbd_image_options_destroy(rbd_image_options_t opts);
func (rio *RbdImageOptions) Destroy() {
func (rio *ImageOptions) Destroy() {
C.rbd_image_options_destroy(rio.options)
}
@ -57,7 +116,7 @@ func (rio *RbdImageOptions) Destroy() {
// Implements:
// int rbd_image_options_set_string(rbd_image_options_t opts, int optname,
// const char* optval);
func (rio *RbdImageOptions) SetString(option RbdImageOption, value string) error {
func (rio *ImageOptions) SetString(option ImageOption, value string) error {
c_value := C.CString(value)
defer C.free(unsafe.Pointer(c_value))
@ -75,7 +134,7 @@ func (rio *RbdImageOptions) SetString(option RbdImageOption, value string) error
// Implements:
// int rbd_image_options_get_string(rbd_image_options_t opts, int optname,
// char* optval, size_t maxlen);
func (rio *RbdImageOptions) GetString(option RbdImageOption) (string, error) {
func (rio *ImageOptions) GetString(option ImageOption) (string, error) {
value := make([]byte, 4096)
ret := C.rbd_image_options_get_string(rio.options, C.int(option),
@ -93,7 +152,7 @@ func (rio *RbdImageOptions) GetString(option RbdImageOption) (string, error) {
// Implements:
// int rbd_image_options_set_uint64(rbd_image_options_t opts, int optname,
// const uint64_t optval);
func (rio *RbdImageOptions) SetUint64(option RbdImageOption, value uint64) error {
func (rio *ImageOptions) SetUint64(option ImageOption, value uint64) error {
c_value := C.uint64_t(value)
ret := C.rbd_image_options_set_uint64(rio.options, C.int(option), c_value)
@ -110,7 +169,7 @@ func (rio *RbdImageOptions) SetUint64(option RbdImageOption, value uint64) error
// Implements:
// int rbd_image_options_get_uint64(rbd_image_options_t opts, int optname,
// uint64_t* optval);
func (rio *RbdImageOptions) GetUint64(option RbdImageOption) (uint64, error) {
func (rio *ImageOptions) GetUint64(option ImageOption) (uint64, error) {
var c_value C.uint64_t
ret := C.rbd_image_options_get_uint64(rio.options, C.int(option), &c_value)
@ -126,7 +185,7 @@ func (rio *RbdImageOptions) GetUint64(option RbdImageOption) (uint64, error) {
// Implements:
// int rbd_image_options_is_set(rbd_image_options_t opts, int optname,
// bool* is_set);
func (rio *RbdImageOptions) IsSet(option RbdImageOption) (bool, error) {
func (rio *ImageOptions) IsSet(option ImageOption) (bool, error) {
var c_set C.bool
ret := C.rbd_image_options_is_set(rio.options, C.int(option), &c_set)
@ -141,7 +200,7 @@ func (rio *RbdImageOptions) IsSet(option RbdImageOption) (bool, error) {
//
// Implements:
// int rbd_image_options_unset(rbd_image_options_t opts, int optname)
func (rio *RbdImageOptions) Unset(option RbdImageOption) error {
func (rio *ImageOptions) Unset(option ImageOption) error {
ret := C.rbd_image_options_unset(rio.options, C.int(option))
if ret != 0 {
return fmt.Errorf("%v, could not unset option %v", getError(ret), option)
@ -154,7 +213,7 @@ func (rio *RbdImageOptions) Unset(option RbdImageOption) error {
//
// Implements:
// void rbd_image_options_clear(rbd_image_options_t opts)
func (rio *RbdImageOptions) Clear() {
func (rio *ImageOptions) Clear() {
C.rbd_image_options_clear(rio.options)
}
@ -163,7 +222,7 @@ func (rio *RbdImageOptions) Clear() {
//
// Implements:
// int rbd_image_options_is_empty(rbd_image_options_t opts)
func (rio *RbdImageOptions) IsEmpty() bool {
func (rio *ImageOptions) IsEmpty() bool {
ret := C.rbd_image_options_is_empty(rio.options)
return ret != 0
}

309
vendor/github.com/ceph/go-ceph/rbd/rbd.go generated vendored
View File

@ -8,50 +8,27 @@ package rbd
// #include <stdlib.h>
// #include <rados/librados.h>
// #include <rbd/librbd.h>
// #include <rbd/features.h>
import "C"
import (
"bytes"
"errors"
"fmt"
"io"
"time"
"unsafe"
"github.com/ceph/go-ceph/errutil"
"github.com/ceph/go-ceph/rados"
)
const (
// RBD features.
RbdFeatureLayering = uint64(C.RBD_FEATURE_LAYERING)
RbdFeatureStripingV2 = uint64(C.RBD_FEATURE_STRIPINGV2)
RbdFeatureExclusiveLock = uint64(C.RBD_FEATURE_EXCLUSIVE_LOCK)
RbdFeatureObjectMap = uint64(C.RBD_FEATURE_OBJECT_MAP)
RbdFeatureFastDiff = uint64(C.RBD_FEATURE_FAST_DIFF)
RbdFeatureDeepFlatten = uint64(C.RBD_FEATURE_DEEP_FLATTEN)
RbdFeatureJournaling = uint64(C.RBD_FEATURE_JOURNALING)
RbdFeatureDataPool = uint64(C.RBD_FEATURE_DATA_POOL)
// Image.Seek() constants:
RbdFeaturesDefault = uint64(C.RBD_FEATURES_DEFAULT)
// Features that make an image inaccessible for read or write by clients that don't understand
// them.
RbdFeaturesIncompatible = uint64(C.RBD_FEATURES_INCOMPATIBLE)
// Features that make an image unwritable by clients that don't understand them.
RbdFeaturesRwIncompatible = uint64(C.RBD_FEATURES_RW_INCOMPATIBLE)
// Features that may be dynamically enabled or disabled.
RbdFeaturesMutable = uint64(C.RBD_FEATURES_MUTABLE)
// Features that only work when used with a single client using the image for writes.
RbdFeaturesSingleClient = uint64(C.RBD_FEATURES_SINGLE_CLIENT)
// Image.Seek() constants
// SeekSet is used with Seek to absolutely position the file.
SeekSet = int(C.SEEK_SET)
// SeekCur is used with Seek to position the file relatively to the current
// position.
SeekCur = int(C.SEEK_CUR)
// SeekEnd is used with Seek to position the file relatively to the end.
SeekEnd = int(C.SEEK_END)
)
@ -66,22 +43,7 @@ const (
NoSnapshot = ""
)
//
type RBDError int
var (
ErrNoIOContext = errors.New("RBD image does not have an IOContext")
ErrNoName = errors.New("RBD image does not have a name")
ErrSnapshotNoName = errors.New("RBD snapshot does not have a name")
ErrImageNotOpen = errors.New("RBD image not open")
ErrNotFound = errors.New("RBD image not found")
// retained for compatibility with old versions
RbdErrorImageNotOpen = ErrImageNotOpen
RbdErrorNotFound = ErrNotFound
)
//
// ImageInfo represents the status information for an image.
type ImageInfo struct {
Size uint64
Obj_size uint64
@ -92,21 +54,21 @@ type ImageInfo struct {
Parent_name string
}
//
// SnapInfo represents the status information for a snapshot.
type SnapInfo struct {
Id uint64
Size uint64
Name string
}
//
// Locker provides info about a client that is locking an image.
type Locker struct {
Client string
Cookie string
Addr string
}
//
// Image is a handle for an RBD image.
type Image struct {
io.Reader
io.Writer
@ -119,12 +81,6 @@ type Image struct {
image C.rbd_image_t
}
//
type Snapshot struct {
image *Image
name string
}
// TrashInfo contains information about trashed RBDs.
type TrashInfo struct {
Id string // Id string, required to remove / restore trashed RBDs.
@ -145,6 +101,11 @@ func split(buf []byte) (values []string) {
return values
}
// cephIoctx returns a ceph rados_ioctx_t given a go-ceph rados IOContext.
func cephIoctx(radosIoctx *rados.IOContext) C.rados_ioctx_t {
return C.rados_ioctx_t(radosIoctx.Pointer())
}
// test if a bit is set in the given value
func hasBit(value, bit uint32) bool {
return (value & bit) == bit
@ -164,38 +125,6 @@ func (image *Image) validate(req uint32) error {
return nil
}
// validate the attributes listed in the req bitmask, and return an error in
// case the attribute is not set
// Calls snapshot.image.validate(req) to validate the image attributes.
func (snapshot *Snapshot) validate(req uint32) error {
if hasBit(req, snapshotNeedsName) && snapshot.name == "" {
return ErrSnapshotNoName
} else if snapshot.image != nil {
return snapshot.image.validate(req)
}
return nil
}
func (e RBDError) Error() string {
errno, s := errutil.FormatErrno(int(e))
if s == "" {
return fmt.Sprintf("rbd: ret=%d", errno)
}
return fmt.Sprintf("rbd: ret=%d, %s", errno, s)
}
func getError(err C.int) error {
if err != 0 {
if err == -C.ENOENT {
return ErrNotFound
}
return RBDError(err)
} else {
return nil
}
}
// Version returns the major, minor, and patch level of the librbd library.
func Version() (int, int, int) {
var c_major, c_minor, c_patch C.int
@ -238,7 +167,7 @@ func Create(ioctx *rados.IOContext, name string, size uint64, order int,
defer C.free(unsafe.Pointer(c_name))
ret = C.rbd_create(C.rados_ioctx_t(ioctx.Pointer()),
ret = C.rbd_create(cephIoctx(ioctx),
c_name, C.uint64_t(size), &c_order)
default:
return nil, errors.New("Wrong number of argument")
@ -268,7 +197,7 @@ func Create2(ioctx *rados.IOContext, name string, size uint64, features uint64,
defer C.free(unsafe.Pointer(c_name))
ret = C.rbd_create2(C.rados_ioctx_t(ioctx.Pointer()), c_name,
ret = C.rbd_create2(cephIoctx(ioctx), c_name,
C.uint64_t(size), C.uint64_t(features), &c_order)
if ret < 0 {
return nil, RBDError(ret)
@ -296,7 +225,7 @@ func Create3(ioctx *rados.IOContext, name string, size uint64, features uint64,
defer C.free(unsafe.Pointer(c_name))
ret = C.rbd_create3(C.rados_ioctx_t(ioctx.Pointer()), c_name,
ret = C.rbd_create3(cephIoctx(ioctx), c_name,
C.uint64_t(size), C.uint64_t(features), &c_order,
C.uint64_t(stripe_unit), C.uint64_t(stripe_count))
if ret < 0 {
@ -329,9 +258,9 @@ func (image *Image) Clone(snapname string, c_ioctx *rados.IOContext, c_name stri
defer C.free(unsafe.Pointer(c_p_snapname))
defer C.free(unsafe.Pointer(c_c_name))
ret := C.rbd_clone(C.rados_ioctx_t(image.ioctx.Pointer()),
ret := C.rbd_clone(cephIoctx(image.ioctx),
c_p_name, c_p_snapname,
C.rados_ioctx_t(c_ioctx.Pointer()),
cephIoctx(c_ioctx),
c_c_name, C.uint64_t(features), &c_order)
if ret < 0 {
return nil, RBDError(ret)
@ -364,7 +293,7 @@ func (image *Image) Trash(delay time.Duration) error {
c_name := C.CString(image.name)
defer C.free(unsafe.Pointer(c_name))
return getError(C.rbd_trash_move(C.rados_ioctx_t(image.ioctx.Pointer()), c_name,
return getError(C.rbd_trash_move(cephIoctx(image.ioctx), c_name,
C.uint64_t(delay.Seconds())))
}
@ -383,7 +312,7 @@ func (image *Image) Rename(destname string) error {
defer C.free(unsafe.Pointer(c_srcname))
defer C.free(unsafe.Pointer(c_destname))
err := RBDError(C.rbd_rename(C.rados_ioctx_t(image.ioctx.Pointer()),
err := RBDError(C.rbd_rename(cephIoctx(image.ioctx),
c_srcname, c_destname))
if err == 0 {
image.name = destname
@ -523,22 +452,6 @@ func (image *Image) GetSize() (size uint64, err error) {
return size, nil
}
// GetFeatures returns the features bitmask for the rbd image.
//
// Implements:
// int rbd_get_features(rbd_image_t image, uint64_t *features);
func (image *Image) GetFeatures() (features uint64, err error) {
if err := image.validate(imageIsOpen); err != nil {
return 0, err
}
if ret := C.rbd_get_features(image.image, (*C.uint64_t)(&features)); ret < 0 {
return 0, RBDError(ret)
}
return features, nil
}
// GetStripeUnit returns the stripe-unit value for the rbd image.
//
// Implements:
@ -605,10 +518,10 @@ func (image *Image) Copy(ioctx *rados.IOContext, destname string) error {
defer C.free(unsafe.Pointer(c_destname))
return getError(C.rbd_copy(image.image,
C.rados_ioctx_t(ioctx.Pointer()), c_destname))
cephIoctx(ioctx), c_destname))
}
// Copy one rbd image to another, using an image handle.
// Copy2 copies one rbd image to another, using an image handle.
//
// Implements:
// int rbd_copy2(rbd_image_t src, rbd_image_t dest);
@ -818,6 +731,7 @@ func (image *Image) Write(data []byte) (n int, err error) {
return ret, err
}
// Seek updates the internal file position for the current image.
func (image *Image) Seek(offset int64, whence int) (int64, error) {
switch whence {
case SeekSet:
@ -836,7 +750,12 @@ func (image *Image) Seek(offset int64, whence int) (int64, error) {
return image.offset, nil
}
// int rbd_discard(rbd_image_t image, uint64_t ofs, uint64_t len);
// Discard the supplied range from the image. The supplied range will be read
// as zeros once Discard returns. The discarded range will no longer take up
// space.
//
// Implements:
// int rbd_discard(rbd_image_t image, uint64_t ofs, uint64_t len);
func (image *Image) Discard(ofs uint64, length uint64) (int, error) {
if err := image.validate(imageIsOpen); err != nil {
return 0, err
@ -850,6 +769,7 @@ func (image *Image) Discard(ofs uint64, length uint64) (int, error) {
return int(ret), nil
}
// ReadAt copies data from the image into the supplied buffer.
func (image *Image) ReadAt(data []byte, off int64) (int, error) {
if err := image.validate(imageIsOpen); err != nil {
return 0, err
@ -876,6 +796,7 @@ func (image *Image) ReadAt(data []byte, off int64) (int, error) {
return ret, nil
}
// WriteAt copies data from the supplied buffer to the image.
func (image *Image) WriteAt(data []byte, off int64) (n int, err error) {
if err := image.validate(imageIsOpen); err != nil {
return 0, err
@ -895,7 +816,10 @@ func (image *Image) WriteAt(data []byte, off int64) (n int, err error) {
return ret, err
}
// int rbd_flush(rbd_image_t image);
// Flush all cached writes to storage.
//
// Implements:
// int rbd_flush(rbd_image_t image);
func (image *Image) Flush() error {
if err := image.validate(imageIsOpen); err != nil {
return err
@ -904,8 +828,11 @@ func (image *Image) Flush() error {
return getError(C.rbd_flush(image.image))
}
// int rbd_snap_list(rbd_image_t image, rbd_snap_info_t *snaps, int *max_snaps);
// void rbd_snap_list_end(rbd_snap_info_t *snaps);
// GetSnapshotNames returns more than just the names of snapshots
// associated with the rbd image.
//
// Implements:
// int rbd_snap_list(rbd_image_t image, rbd_snap_info_t *snaps, int *max_snaps);
func (image *Image) GetSnapshotNames() (snaps []SnapInfo, err error) {
if err := image.validate(imageIsOpen); err != nil {
return nil, err
@ -934,35 +861,10 @@ func (image *Image) GetSnapshotNames() (snaps []SnapInfo, err error) {
return snaps[:len(snaps)-1], nil
}
// int rbd_snap_create(rbd_image_t image, const char *snapname);
func (image *Image) CreateSnapshot(snapname string) (*Snapshot, error) {
if err := image.validate(imageIsOpen); err != nil {
return nil, err
}
c_snapname := C.CString(snapname)
defer C.free(unsafe.Pointer(c_snapname))
ret := C.rbd_snap_create(image.image, c_snapname)
if ret < 0 {
return nil, RBDError(ret)
}
return &Snapshot{
image: image,
name: snapname,
}, nil
}
// GetMetadata returns the metadata string associated with the given key.
//
func (image *Image) GetSnapshot(snapname string) *Snapshot {
return &Snapshot{
image: image,
name: snapname,
}
}
// int rbd_metadata_get(rbd_image_t image, const char *key, char *value, size_t *vallen)
// Implements:
// int rbd_metadata_get(rbd_image_t image, const char *key, char *value, size_t *vallen)
func (image *Image) GetMetadata(key string) (string, error) {
if err := image.validate(imageIsOpen); err != nil {
return "", err
@ -989,7 +891,10 @@ func (image *Image) GetMetadata(key string) (string, error) {
return string(value), nil
}
// int rbd_metadata_set(rbd_image_t image, const char *key, const char *value)
// SetMetadata updates the metadata string associated with the given key.
//
// Implements:
// int rbd_metadata_set(rbd_image_t image, const char *key, const char *value)
func (image *Image) SetMetadata(key string, value string) error {
if err := image.validate(imageIsOpen); err != nil {
return err
@ -1008,7 +913,10 @@ func (image *Image) SetMetadata(key string, value string) error {
return nil
}
// int rbd_metadata_remove(rbd_image_t image, const char *key)
// RemoveMetadata clears the metadata associated with the given key.
//
// Implements:
// int rbd_metadata_remove(rbd_image_t image, const char *key)
func (image *Image) RemoveMetadata(key string) error {
if err := image.validate(imageIsOpen); err != nil {
return err
@ -1051,103 +959,20 @@ func (image *Image) GetId() (string, error) {
}
}
// int rbd_snap_remove(rbd_image_t image, const char *snapname);
func (snapshot *Snapshot) Remove() error {
if err := snapshot.validate(snapshotNeedsName | imageIsOpen); err != nil {
return err
}
c_snapname := C.CString(snapshot.name)
defer C.free(unsafe.Pointer(c_snapname))
return getError(C.rbd_snap_remove(snapshot.image.image, c_snapname))
}
// int rbd_snap_rollback(rbd_image_t image, const char *snapname);
// int rbd_snap_rollback_with_progress(rbd_image_t image, const char *snapname,
// librbd_progress_fn_t cb, void *cbdata);
func (snapshot *Snapshot) Rollback() error {
if err := snapshot.validate(snapshotNeedsName | imageIsOpen); err != nil {
return err
}
c_snapname := C.CString(snapshot.name)
defer C.free(unsafe.Pointer(c_snapname))
return getError(C.rbd_snap_rollback(snapshot.image.image, c_snapname))
}
// int rbd_snap_protect(rbd_image_t image, const char *snap_name);
func (snapshot *Snapshot) Protect() error {
if err := snapshot.validate(snapshotNeedsName | imageIsOpen); err != nil {
return err
}
c_snapname := C.CString(snapshot.name)
defer C.free(unsafe.Pointer(c_snapname))
return getError(C.rbd_snap_protect(snapshot.image.image, c_snapname))
}
// int rbd_snap_unprotect(rbd_image_t image, const char *snap_name);
func (snapshot *Snapshot) Unprotect() error {
if err := snapshot.validate(snapshotNeedsName | imageIsOpen); err != nil {
return err
}
c_snapname := C.CString(snapshot.name)
defer C.free(unsafe.Pointer(c_snapname))
return getError(C.rbd_snap_unprotect(snapshot.image.image, c_snapname))
}
// int rbd_snap_is_protected(rbd_image_t image, const char *snap_name,
// int *is_protected);
func (snapshot *Snapshot) IsProtected() (bool, error) {
if err := snapshot.validate(snapshotNeedsName | imageIsOpen); err != nil {
return false, err
}
var c_is_protected C.int
c_snapname := C.CString(snapshot.name)
defer C.free(unsafe.Pointer(c_snapname))
ret := C.rbd_snap_is_protected(snapshot.image.image, c_snapname,
&c_is_protected)
if ret < 0 {
return false, RBDError(ret)
}
return c_is_protected != 0, nil
}
// int rbd_snap_set(rbd_image_t image, const char *snapname);
func (snapshot *Snapshot) Set() error {
if err := snapshot.validate(snapshotNeedsName | imageIsOpen); err != nil {
return err
}
c_snapname := C.CString(snapshot.name)
defer C.free(unsafe.Pointer(c_snapname))
return getError(C.rbd_snap_set(snapshot.image.image, c_snapname))
}
// GetTrashList returns a slice of TrashInfo structs, containing information about all RBD images
// currently residing in the trash.
func GetTrashList(ioctx *rados.IOContext) ([]TrashInfo, error) {
var num_entries C.size_t
// Call rbd_trash_list with nil pointer to get number of trash entries.
if C.rbd_trash_list(C.rados_ioctx_t(ioctx.Pointer()), nil, &num_entries); num_entries == 0 {
if C.rbd_trash_list(cephIoctx(ioctx), nil, &num_entries); num_entries == 0 {
return nil, nil
}
c_entries := make([]C.rbd_trash_image_info_t, num_entries)
trashList := make([]TrashInfo, num_entries)
if ret := C.rbd_trash_list(C.rados_ioctx_t(ioctx.Pointer()), &c_entries[0], &num_entries); ret < 0 {
if ret := C.rbd_trash_list(cephIoctx(ioctx), &c_entries[0], &num_entries); ret < 0 {
return nil, RBDError(ret)
}
@ -1171,7 +996,7 @@ func TrashRemove(ioctx *rados.IOContext, id string, force bool) error {
c_id := C.CString(id)
defer C.free(unsafe.Pointer(c_id))
return getError(C.rbd_trash_remove(C.rados_ioctx_t(ioctx.Pointer()), c_id, C.bool(force)))
return getError(C.rbd_trash_remove(cephIoctx(ioctx), c_id, C.bool(force)))
}
// TrashRestore restores the trashed RBD with the specified id back to the pool from whence it
@ -1182,7 +1007,7 @@ func TrashRestore(ioctx *rados.IOContext, id, name string) error {
defer C.free(unsafe.Pointer(c_id))
defer C.free(unsafe.Pointer(c_name))
return getError(C.rbd_trash_restore(C.rados_ioctx_t(ioctx.Pointer()), c_id, c_name))
return getError(C.rbd_trash_restore(cephIoctx(ioctx), c_id, c_name))
}
// OpenImage will open an existing rbd image by name and snapshot name,
@ -1204,7 +1029,7 @@ func OpenImage(ioctx *rados.IOContext, name, snapName string) (*Image, error) {
var cImage C.rbd_image_t
ret := C.rbd_open(
C.rados_ioctx_t(ioctx.Pointer()),
cephIoctx(ioctx),
cName,
&cImage,
cSnapName)
@ -1240,7 +1065,7 @@ func OpenImageReadOnly(ioctx *rados.IOContext, name, snapName string) (*Image, e
var cImage C.rbd_image_t
ret := C.rbd_open_read_only(
C.rados_ioctx_t(ioctx.Pointer()),
cephIoctx(ioctx),
cName,
&cImage,
cSnapName)
@ -1277,7 +1102,7 @@ func OpenImageById(ioctx *rados.IOContext, id, snapName string) (*Image, error)
var cImage C.rbd_image_t
ret := C.rbd_open_by_id(
C.rados_ioctx_t(ioctx.Pointer()),
cephIoctx(ioctx),
cid,
&cImage,
cSnapName)
@ -1314,7 +1139,7 @@ func OpenImageByIdReadOnly(ioctx *rados.IOContext, id, snapName string) (*Image,
var cImage C.rbd_image_t
ret := C.rbd_open_by_id_read_only(
C.rados_ioctx_t(ioctx.Pointer()),
cephIoctx(ioctx),
cid,
&cImage,
cSnapName)
@ -1334,7 +1159,7 @@ func OpenImageByIdReadOnly(ioctx *rados.IOContext, id, snapName string) (*Image,
// Implements:
// int rbd_create4(rados_ioctx_t io, const char *name, uint64_t size,
// rbd_image_options_t opts);
func CreateImage(ioctx *rados.IOContext, name string, size uint64, rio *RbdImageOptions) error {
func CreateImage(ioctx *rados.IOContext, name string, size uint64, rio *ImageOptions) error {
if rio == nil {
return RBDError(C.EINVAL)
@ -1343,7 +1168,7 @@ func CreateImage(ioctx *rados.IOContext, name string, size uint64, rio *RbdImage
c_name := C.CString(name)
defer C.free(unsafe.Pointer(c_name))
ret := C.rbd_create4(C.rados_ioctx_t(ioctx.Pointer()), c_name,
ret := C.rbd_create4(cephIoctx(ioctx), c_name,
C.uint64_t(size), C.rbd_image_options_t(rio.options))
return getError(ret)
}
@ -1355,7 +1180,7 @@ func CreateImage(ioctx *rados.IOContext, name string, size uint64, rio *RbdImage
func RemoveImage(ioctx *rados.IOContext, name string) error {
c_name := C.CString(name)
defer C.free(unsafe.Pointer(c_name))
return getError(C.rbd_remove(C.rados_ioctx_t(ioctx.Pointer()), c_name))
return getError(C.rbd_remove(cephIoctx(ioctx), c_name))
}
// CloneImage creates a clone of the image from the named snapshot in the
@ -1366,7 +1191,7 @@ func RemoveImage(ioctx *rados.IOContext, name string) error {
// const char *p_snapname, rados_ioctx_t c_ioctx,
// const char *c_name, rbd_image_options_t c_opts);
func CloneImage(ioctx *rados.IOContext, parentName, snapName string,
destctx *rados.IOContext, name string, rio *RbdImageOptions) error {
destctx *rados.IOContext, name string, rio *ImageOptions) error {
if rio == nil {
return RBDError(C.EINVAL)
@ -1380,10 +1205,10 @@ func CloneImage(ioctx *rados.IOContext, parentName, snapName string,
defer C.free(unsafe.Pointer(cCloneName))
ret := C.rbd_clone3(
C.rados_ioctx_t(ioctx.Pointer()),
cephIoctx(ioctx),
cParentName,
cParentSnapName,
C.rados_ioctx_t(destctx.Pointer()),
cephIoctx(destctx),
cCloneName,
C.rbd_image_options_t(rio.options))
return getError(ret)
@ -1394,7 +1219,7 @@ func CloneImage(ioctx *rados.IOContext, parentName, snapName string,
// This function is a convenience wrapper around CloneImage to support cloning
// from an existing Image.
func CloneFromImage(parent *Image, snapName string,
destctx *rados.IOContext, name string, rio *RbdImageOptions) error {
destctx *rados.IOContext, name string, rio *ImageOptions) error {
if err := parent.validate(imageNeedsIOContext); err != nil {
return err

2
vendor/github.com/ceph/go-ceph/rbd/rbd_mimic.go generated vendored
View File

@ -23,7 +23,7 @@ func GetImageNames(ioctx *rados.IOContext) (names []string, err error) {
buf := make([]byte, 4096)
for {
size := C.size_t(len(buf))
ret := C.rbd_list(C.rados_ioctx_t(ioctx.Pointer()),
ret := C.rbd_list(cephIoctx(ioctx),
(*C.char)(unsafe.Pointer(&buf[0])), &size)
if ret == -C.ERANGE {
buf = make([]byte, size)

4
vendor/github.com/ceph/go-ceph/rbd/rbd_nautilus.go generated vendored
View File

@ -20,7 +20,7 @@ import (
// GetImageNames returns the list of current RBD images.
func GetImageNames(ioctx *rados.IOContext) ([]string, error) {
size := C.size_t(0)
ret := C.rbd_list2(C.rados_ioctx_t(ioctx.Pointer()), nil, &size)
ret := C.rbd_list2(cephIoctx(ioctx), nil, &size)
if ret < 0 && ret != -C.ERANGE {
return nil, RBDError(ret)
} else if ret > 0 {
@ -31,7 +31,7 @@ func GetImageNames(ioctx *rados.IOContext) ([]string, error) {
// expected: ret == -ERANGE, size contains number of image names
images := make([]C.rbd_image_spec_t, size)
ret = C.rbd_list2(C.rados_ioctx_t(ioctx.Pointer()), (*C.rbd_image_spec_t)(unsafe.Pointer(&images[0])), &size)
ret = C.rbd_list2(cephIoctx(ioctx), (*C.rbd_image_spec_t)(unsafe.Pointer(&images[0])), &size)
if ret < 0 {
return nil, RBDError(ret)
}

162
vendor/github.com/ceph/go-ceph/rbd/snapshot.go generated vendored Normal file
View File

@ -0,0 +1,162 @@
package rbd
// #cgo LDFLAGS: -lrbd
// #include <stdlib.h>
// #include <rbd/librbd.h>
import "C"
import (
"unsafe"
)
// Snapshot represents a snapshot on a particular rbd image.
type Snapshot struct {
image *Image
name string
}
// CreateSnapshot returns a new Snapshot objects after creating
// a snapshot of the rbd image.
//
// Implements:
// int rbd_snap_create(rbd_image_t image, const char *snapname);
func (image *Image) CreateSnapshot(snapname string) (*Snapshot, error) {
if err := image.validate(imageIsOpen); err != nil {
return nil, err
}
c_snapname := C.CString(snapname)
defer C.free(unsafe.Pointer(c_snapname))
ret := C.rbd_snap_create(image.image, c_snapname)
if ret < 0 {
return nil, RBDError(ret)
}
return &Snapshot{
image: image,
name: snapname,
}, nil
}
// validate the attributes listed in the req bitmask, and return an error in
// case the attribute is not set
// Calls snapshot.image.validate(req) to validate the image attributes.
func (snapshot *Snapshot) validate(req uint32) error {
if hasBit(req, snapshotNeedsName) && snapshot.name == "" {
return ErrSnapshotNoName
} else if snapshot.image != nil {
return snapshot.image.validate(req)
}
return nil
}
// GetSnapshot constructs a snapshot object for the image given
// the snap name. It does not validate that this snapshot exists.
func (image *Image) GetSnapshot(snapname string) *Snapshot {
return &Snapshot{
image: image,
name: snapname,
}
}
// Remove the snapshot from the connected rbd image.
//
// Implements:
// int rbd_snap_remove(rbd_image_t image, const char *snapname);
func (snapshot *Snapshot) Remove() error {
if err := snapshot.validate(snapshotNeedsName | imageIsOpen); err != nil {
return err
}
c_snapname := C.CString(snapshot.name)
defer C.free(unsafe.Pointer(c_snapname))
return getError(C.rbd_snap_remove(snapshot.image.image, c_snapname))
}
// Rollback the image to the snapshot.
//
// Implements:
// int rbd_snap_rollback(rbd_image_t image, const char *snapname);
func (snapshot *Snapshot) Rollback() error {
if err := snapshot.validate(snapshotNeedsName | imageIsOpen); err != nil {
return err
}
c_snapname := C.CString(snapshot.name)
defer C.free(unsafe.Pointer(c_snapname))
return getError(C.rbd_snap_rollback(snapshot.image.image, c_snapname))
}
// Protect a snapshot from unwanted deletion.
//
// Implements:
// int rbd_snap_protect(rbd_image_t image, const char *snap_name);
func (snapshot *Snapshot) Protect() error {
if err := snapshot.validate(snapshotNeedsName | imageIsOpen); err != nil {
return err
}
c_snapname := C.CString(snapshot.name)
defer C.free(unsafe.Pointer(c_snapname))
return getError(C.rbd_snap_protect(snapshot.image.image, c_snapname))
}
// Unprotect stops protecting the snapshot.
//
// Implements:
// int rbd_snap_unprotect(rbd_image_t image, const char *snap_name);
func (snapshot *Snapshot) Unprotect() error {
if err := snapshot.validate(snapshotNeedsName | imageIsOpen); err != nil {
return err
}
c_snapname := C.CString(snapshot.name)
defer C.free(unsafe.Pointer(c_snapname))
return getError(C.rbd_snap_unprotect(snapshot.image.image, c_snapname))
}
// IsProtected returns true if the snapshot is currently protected.
//
// Implements:
// int rbd_snap_is_protected(rbd_image_t image, const char *snap_name,
// int *is_protected);
func (snapshot *Snapshot) IsProtected() (bool, error) {
if err := snapshot.validate(snapshotNeedsName | imageIsOpen); err != nil {
return false, err
}
var c_is_protected C.int
c_snapname := C.CString(snapshot.name)
defer C.free(unsafe.Pointer(c_snapname))
ret := C.rbd_snap_is_protected(snapshot.image.image, c_snapname,
&c_is_protected)
if ret < 0 {
return false, RBDError(ret)
}
return c_is_protected != 0, nil
}
// Set updates the rbd image (not the Snapshot) such that the snapshot
// is the source of readable data.
//
// Implements:
// int rbd_snap_set(rbd_image_t image, const char *snapname);
func (snapshot *Snapshot) Set() error {
if err := snapshot.validate(snapshotNeedsName | imageIsOpen); err != nil {
return err
}
c_snapname := C.CString(snapshot.name)
defer C.free(unsafe.Pointer(c_snapname))
return getError(C.rbd_snap_set(snapshot.image.image, c_snapname))
}

57
vendor/github.com/ceph/go-ceph/rbd/watchers_mimic.go generated vendored Normal file
View File

@ -0,0 +1,57 @@
// +build !luminous
//
// Ceph Mimic is the first version that supports watchers through librbd.
package rbd
// #cgo LDFLAGS: -lrbd
// #include <errno.h>
// #include <rbd/librbd.h>
import "C"
// ImageWatcher is a representation of the rbd_image_watcher_t from librbd.h
type ImageWatcher struct {
Addr string
Id int64
Cookie uint64
}
// ListWatchers returns the watchers on an RBD image. In case of an error, nil
// and an error are returned.
//
// Note:
// Only supported in Ceph Mimic and newer.
//
// Implements:
// int rbd_watchers_list(rbd_image_t image,
// rbd_image_watcher_t *watchers, size_t *max_watchers)
func (image *Image) ListWatchers() ([]ImageWatcher, error) {
if err := image.validate(imageIsOpen); err != nil {
return nil, err
}
count := C.ulong(0)
ret := C.rbd_watchers_list(image.image, nil, &count)
if ret != 0 && ret != -C.ERANGE {
return nil, getError(ret)
}
if ret == 0 && count == 0 {
return nil, nil
}
watchers := make([]C.rbd_image_watcher_t, count)
ret = C.rbd_watchers_list(image.image, &watchers[0], &count)
if ret != 0 && ret != -C.ERANGE {
return nil, getError(ret)
}
defer C.rbd_watchers_list_cleanup(&watchers[0], count)
imageWatchers := make([]ImageWatcher, len(watchers))
for i, watcher := range watchers {
imageWatchers[i].Addr = C.GoString(watcher.addr)
imageWatchers[i].Id = int64(watcher.id)
imageWatchers[i].Cookie = uint64(watcher.cookie)
}
return imageWatchers, nil
}

5
vendor/modules.txt vendored
View File

@ -2,8 +2,9 @@
github.com/beorn7/perks/quantile
# github.com/blang/semver v3.5.0+incompatible
github.com/blang/semver
# github.com/ceph/go-ceph v0.2.0
github.com/ceph/go-ceph/errutil
# github.com/ceph/go-ceph v0.3.0
github.com/ceph/go-ceph/internal/callbacks
github.com/ceph/go-ceph/internal/errutil
github.com/ceph/go-ceph/rados
github.com/ceph/go-ceph/rbd
# github.com/cespare/xxhash/v2 v2.1.1