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libvirt/tools/virsh-volume.c

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/*
* virsh-volume.c: Commands to manage storage volume
*
* Copyright (C) 2005, 2007-2016 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
* Daniel Veillard <veillard@redhat.com>
* Karel Zak <kzak@redhat.com>
* Daniel P. Berrange <berrange@redhat.com>
*
*/
#include <config.h>
#include "virsh-volume.h"
#include <fcntl.h>
#include <libxml/parser.h>
#include <libxml/tree.h>
#include <libxml/xpath.h>
#include <libxml/xmlsave.h>
#include "internal.h"
#include "virbuffer.h"
#include "viralloc.h"
#include "virutil.h"
#include "virfile.h"
#include "virsh-pool.h"
#include "virxml.h"
#include "virstring.h"
#define VIRSH_COMMON_OPT_POOL_FULL \
VIRSH_COMMON_OPT_POOL(N_("pool name or uuid")) \
#define VIRSH_COMMON_OPT_POOL_NAME \
VIRSH_COMMON_OPT_POOL(N_("pool name")) \
#define VIRSH_COMMON_OPT_POOL_OPTIONAL \
{.name = "pool", \
.type = VSH_OT_STRING, \
.help = N_("pool name or uuid") \
} \
#define VIRSH_COMMON_OPT_VOLUME_VOL \
{.name = "vol", \
.type = VSH_OT_DATA, \
.flags = VSH_OFLAG_REQ, \
.help = N_("vol name, key or path") \
} \
virStorageVolPtr
virshCommandOptVolBy(vshControl *ctl, const vshCmd *cmd,
const char *optname,
const char *pooloptname,
const char **name, unsigned int flags)
{
virStorageVolPtr vol = NULL;
virStoragePoolPtr pool = NULL;
const char *n = NULL, *p = NULL;
virshControlPtr priv = ctl->privData;
virCheckFlags(VIRSH_BYUUID | VIRSH_BYNAME, NULL);
if (vshCommandOptStringReq(ctl, cmd, optname, &n) < 0)
return NULL;
if (pooloptname != NULL &&
vshCommandOptStringReq(ctl, cmd, pooloptname, &p) < 0)
return NULL;
if (p) {
if (!(pool = virshCommandOptPoolBy(ctl, cmd, pooloptname, name, flags)))
return NULL;
if (virStoragePoolIsActive(pool) != 1) {
vshError(ctl, _("pool '%s' is not active"), p);
virStoragePoolFree(pool);
return NULL;
}
}
vshDebug(ctl, VSH_ERR_DEBUG, "%s: found option <%s>: %s\n",
cmd->def->name, optname, n);
if (name)
*name = n;
/* try it by name */
if (pool && (flags & VIRSH_BYNAME)) {
vshDebug(ctl, VSH_ERR_DEBUG, "%s: <%s> trying as vol name\n",
cmd->def->name, optname);
vol = virStorageVolLookupByName(pool, n);
}
/* try it by key */
if (!vol && (flags & VIRSH_BYUUID)) {
vshDebug(ctl, VSH_ERR_DEBUG, "%s: <%s> trying as vol key\n",
cmd->def->name, optname);
vol = virStorageVolLookupByKey(priv->conn, n);
}
/* try it by path */
if (!vol && (flags & VIRSH_BYUUID)) {
vshDebug(ctl, VSH_ERR_DEBUG, "%s: <%s> trying as vol path\n",
cmd->def->name, optname);
vol = virStorageVolLookupByPath(priv->conn, n);
}
if (!vol) {
if (pool || !pooloptname)
vshError(ctl, _("failed to get vol '%s'"), n);
else
vshError(ctl, _("failed to get vol '%s', specifying --%s "
"might help"), n, pooloptname);
}
/* If the pool was specified, then make sure that the returned
* volume is from the given pool */
if (pool && vol) {
virStoragePoolPtr volpool = NULL;
if ((volpool = virStoragePoolLookupByVolume(vol))) {
if (STRNEQ(virStoragePoolGetName(volpool),
virStoragePoolGetName(pool))) {
vshResetLibvirtError();
vshError(ctl,
_("Requested volume '%s' is not in pool '%s'"),
n, virStoragePoolGetName(pool));
virStorageVolFree(vol);
vol = NULL;
}
virStoragePoolFree(volpool);
}
}
if (pool)
virStoragePoolFree(pool);
return vol;
}
/*
* "vol-create-as" command
*/
static const vshCmdInfo info_vol_create_as[] = {
{.name = "help",
.data = N_("create a volume from a set of args")
},
{.name = "desc",
.data = N_("Create a vol.")
},
{.name = NULL}
};
static const vshCmdOptDef opts_vol_create_as[] = {
VIRSH_COMMON_OPT_POOL_NAME,
{.name = "name",
.type = VSH_OT_DATA,
.flags = VSH_OFLAG_REQ,
.help = N_("name of the volume")
},
{.name = "capacity",
.type = VSH_OT_DATA,
.flags = VSH_OFLAG_REQ,
.help = N_("size of the vol, as scaled integer (default bytes)")
},
{.name = "allocation",
.type = VSH_OT_STRING,
.help = N_("initial allocation size, as scaled integer (default bytes)")
},
{.name = "format",
.type = VSH_OT_STRING,
.help = N_("file format type raw,bochs,qcow,qcow2,qed,vmdk")
},
{.name = "backing-vol",
.type = VSH_OT_STRING,
.help = N_("the backing volume if taking a snapshot")
},
{.name = "backing-vol-format",
.type = VSH_OT_STRING,
.help = N_("format of backing volume if taking a snapshot")
},
{.name = "prealloc-metadata",
.type = VSH_OT_BOOL,
.help = N_("preallocate metadata (for qcow2 instead of full allocation)")
},
{.name = "print-xml",
.type = VSH_OT_BOOL,
.help = N_("print XML document, but don't define/create")
},
{.name = NULL}
};
static int
virshVolSize(const char *data, unsigned long long *val)
{
char *end;
if (virStrToLong_ull(data, &end, 10, val) < 0)
return -1;
return virScaleInteger(val, end, 1, ULLONG_MAX);
}
static bool
cmdVolCreateAs(vshControl *ctl, const vshCmd *cmd)
{
virStoragePoolPtr pool;
virStorageVolPtr vol = NULL;
char *xml = NULL;
bool printXML = vshCommandOptBool(cmd, "print-xml");
const char *name, *capacityStr = NULL, *allocationStr = NULL, *format = NULL;
const char *snapshotStrVol = NULL, *snapshotStrFormat = NULL;
unsigned long long capacity, allocation = 0;
virBuffer buf = VIR_BUFFER_INITIALIZER;
unsigned long flags = 0;
virshControlPtr priv = ctl->privData;
bool ret = false;
if (vshCommandOptBool(cmd, "prealloc-metadata"))
flags |= VIR_STORAGE_VOL_CREATE_PREALLOC_METADATA;
if (!(pool = virshCommandOptPool(ctl, cmd, "pool", NULL)))
return false;
if (vshCommandOptStringReq(ctl, cmd, "name", &name) < 0)
goto cleanup;
if (vshCommandOptStringReq(ctl, cmd, "capacity", &capacityStr) < 0)
goto cleanup;
if (virshVolSize(capacityStr, &capacity) < 0) {
vshError(ctl, _("Malformed size %s"), capacityStr);
goto cleanup;
}
if (vshCommandOptStringQuiet(ctl, cmd, "allocation", &allocationStr) > 0 &&
virshVolSize(allocationStr, &allocation) < 0) {
vshError(ctl, _("Malformed size %s"), allocationStr);
goto cleanup;
}
if (vshCommandOptStringReq(ctl, cmd, "format", &format) < 0 ||
vshCommandOptStringReq(ctl, cmd, "backing-vol", &snapshotStrVol) < 0 ||
vshCommandOptStringReq(ctl, cmd, "backing-vol-format",
&snapshotStrFormat) < 0)
goto cleanup;
virBufferAddLit(&buf, "<volume>\n");
virBufferAdjustIndent(&buf, 2);
virBufferAsprintf(&buf, "<name>%s</name>\n", name);
virBufferAsprintf(&buf, "<capacity>%llu</capacity>\n", capacity);
if (allocationStr)
virBufferAsprintf(&buf, "<allocation>%llu</allocation>\n", allocation);
if (format) {
virBufferAddLit(&buf, "<target>\n");
virBufferAdjustIndent(&buf, 2);
virBufferAsprintf(&buf, "<format type='%s'/>\n", format);
virBufferAdjustIndent(&buf, -2);
virBufferAddLit(&buf, "</target>\n");
}
/* Convert the snapshot parameters into backingStore XML */
if (snapshotStrVol) {
/* Lookup snapshot backing volume. Try the backing-vol
* parameter as a name */
vshDebug(ctl, VSH_ERR_DEBUG,
"%s: Look up backing store volume '%s' as name\n",
cmd->def->name, snapshotStrVol);
virStorageVolPtr snapVol = virStorageVolLookupByName(pool, snapshotStrVol);
if (snapVol)
vshDebug(ctl, VSH_ERR_DEBUG,
"%s: Backing store volume found using '%s' as name\n",
cmd->def->name, snapshotStrVol);
if (snapVol == NULL) {
/* Snapshot backing volume not found by name. Try the
* backing-vol parameter as a key */
vshDebug(ctl, VSH_ERR_DEBUG,
"%s: Look up backing store volume '%s' as key\n",
cmd->def->name, snapshotStrVol);
snapVol = virStorageVolLookupByKey(priv->conn, snapshotStrVol);
if (snapVol)
vshDebug(ctl, VSH_ERR_DEBUG,
"%s: Backing store volume found using '%s' as key\n",
cmd->def->name, snapshotStrVol);
}
if (snapVol == NULL) {
/* Snapshot backing volume not found by key. Try the
* backing-vol parameter as a path */
vshDebug(ctl, VSH_ERR_DEBUG,
"%s: Look up backing store volume '%s' as path\n",
cmd->def->name, snapshotStrVol);
snapVol = virStorageVolLookupByPath(priv->conn, snapshotStrVol);
if (snapVol)
vshDebug(ctl, VSH_ERR_DEBUG,
"%s: Backing store volume found using '%s' as path\n",
cmd->def->name, snapshotStrVol);
}
if (snapVol == NULL) {
vshError(ctl, _("failed to get vol '%s'"), snapshotStrVol);
goto cleanup;
}
char *snapshotStrVolPath;
if ((snapshotStrVolPath = virStorageVolGetPath(snapVol)) == NULL) {
virStorageVolFree(snapVol);
goto cleanup;
}
/* Create XML for the backing store */
virBufferAddLit(&buf, "<backingStore>\n");
virBufferAdjustIndent(&buf, 2);
virBufferAsprintf(&buf, "<path>%s</path>\n", snapshotStrVolPath);
if (snapshotStrFormat)
virBufferAsprintf(&buf, "<format type='%s'/>\n",
snapshotStrFormat);
virBufferAdjustIndent(&buf, -2);
virBufferAddLit(&buf, "</backingStore>\n");
/* Cleanup snapshot allocations */
VIR_FREE(snapshotStrVolPath);
virStorageVolFree(snapVol);
}
virBufferAdjustIndent(&buf, -2);
virBufferAddLit(&buf, "</volume>\n");
if (virBufferError(&buf)) {
vshPrint(ctl, "%s", _("Failed to allocate XML buffer"));
goto cleanup;
}
xml = virBufferContentAndReset(&buf);
if (printXML) {
vshPrint(ctl, "%s", xml);
} else {
if (!(vol = virStorageVolCreateXML(pool, xml, flags))) {
vshError(ctl, _("Failed to create vol %s"), name);
goto cleanup;
}
vshPrint(ctl, _("Vol %s created\n"), name);
}
ret = true;
cleanup:
virBufferFreeAndReset(&buf);
if (vol)
virStorageVolFree(vol);
virStoragePoolFree(pool);
VIR_FREE(xml);
return ret;
}
/*
* "vol-create" command
*/
static const vshCmdInfo info_vol_create[] = {
{.name = "help",
.data = N_("create a vol from an XML file")
},
{.name = "desc",
.data = N_("Create a vol.")
},
{.name = NULL}
};
static const vshCmdOptDef opts_vol_create[] = {
VIRSH_COMMON_OPT_POOL_NAME,
VIRSH_COMMON_OPT_FILE(N_("file containing an XML vol description")),
{.name = "prealloc-metadata",
.type = VSH_OT_BOOL,
.help = N_("preallocate metadata (for qcow2 instead of full allocation)")
},
{.name = NULL}
};
static bool
cmdVolCreate(vshControl *ctl, const vshCmd *cmd)
{
virStoragePoolPtr pool;
virStorageVolPtr vol;
const char *from = NULL;
bool ret = false;
unsigned int flags = 0;
char *buffer = NULL;
if (vshCommandOptBool(cmd, "prealloc-metadata"))
flags |= VIR_STORAGE_VOL_CREATE_PREALLOC_METADATA;
if (!(pool = virshCommandOptPool(ctl, cmd, "pool", NULL)))
return false;
if (vshCommandOptStringReq(ctl, cmd, "file", &from) < 0)
goto cleanup;
if (virFileReadAll(from, VSH_MAX_XML_FILE, &buffer) < 0) {
vshSaveLibvirtError();
goto cleanup;
}
if ((vol = virStorageVolCreateXML(pool, buffer, flags))) {
vshPrint(ctl, _("Vol %s created from %s\n"),
virStorageVolGetName(vol), from);
virStorageVolFree(vol);
ret = true;
} else {
vshError(ctl, _("Failed to create vol from %s"), from);
}
cleanup:
VIR_FREE(buffer);
virStoragePoolFree(pool);
return ret;
}
/*
* "vol-create-from" command
*/
static const vshCmdInfo info_vol_create_from[] = {
{.name = "help",
.data = N_("create a vol, using another volume as input")
},
{.name = "desc",
.data = N_("Create a vol from an existing volume.")
},
{.name = NULL}
};
static const vshCmdOptDef opts_vol_create_from[] = {
VIRSH_COMMON_OPT_POOL_FULL,
VIRSH_COMMON_OPT_FILE(N_("file containing an XML vol description")),
VIRSH_COMMON_OPT_VOLUME_VOL,
{.name = "inputpool",
.type = VSH_OT_STRING,
.help = N_("pool name or uuid of the input volume's pool")
},
{.name = "prealloc-metadata",
.type = VSH_OT_BOOL,
.help = N_("preallocate metadata (for qcow2 instead of full allocation)")
},
{.name = "reflink",
.type = VSH_OT_BOOL,
.help = N_("use btrfs COW lightweight copy")
},
{.name = NULL}
};
static bool
cmdVolCreateFrom(vshControl *ctl, const vshCmd *cmd)
{
virStoragePoolPtr pool = NULL;
virStorageVolPtr newvol = NULL, inputvol = NULL;
const char *from = NULL;
bool ret = false;
char *buffer = NULL;
unsigned int flags = 0;
if (!(pool = virshCommandOptPool(ctl, cmd, "pool", NULL)))
goto cleanup;
if (vshCommandOptBool(cmd, "prealloc-metadata"))
flags |= VIR_STORAGE_VOL_CREATE_PREALLOC_METADATA;
if (vshCommandOptBool(cmd, "reflink"))
flags |= VIR_STORAGE_VOL_CREATE_REFLINK;
if (vshCommandOptStringReq(ctl, cmd, "file", &from) < 0)
goto cleanup;
if (!(inputvol = virshCommandOptVol(ctl, cmd, "vol", "inputpool", NULL)))
goto cleanup;
if (virFileReadAll(from, VSH_MAX_XML_FILE, &buffer) < 0) {
vshReportError(ctl);
goto cleanup;
}
newvol = virStorageVolCreateXMLFrom(pool, buffer, inputvol, flags);
if (newvol != NULL) {
vshPrint(ctl, _("Vol %s created from input vol %s\n"),
virStorageVolGetName(newvol), virStorageVolGetName(inputvol));
} else {
vshError(ctl, _("Failed to create vol from %s"), from);
goto cleanup;
}
ret = true;
cleanup:
VIR_FREE(buffer);
if (pool)
virStoragePoolFree(pool);
if (inputvol)
virStorageVolFree(inputvol);
if (newvol)
virStorageVolFree(newvol);
return ret;
}
static xmlChar *
virshMakeCloneXML(const char *origxml, const char *newname)
{
xmlDocPtr doc = NULL;
xmlXPathContextPtr ctxt = NULL;
xmlXPathObjectPtr obj = NULL;
xmlChar *newxml = NULL;
int size;
doc = virXMLParseStringCtxt(origxml, _("(volume_definition)"), &ctxt);
if (!doc)
goto cleanup;
obj = xmlXPathEval(BAD_CAST "/volume/name", ctxt);
if (obj == NULL || obj->nodesetval == NULL ||
obj->nodesetval->nodeTab == NULL)
goto cleanup;
xmlNodeSetContent(obj->nodesetval->nodeTab[0], (const xmlChar *)newname);
xmlDocDumpMemory(doc, &newxml, &size);
cleanup:
xmlXPathFreeObject(obj);
xmlXPathFreeContext(ctxt);
xmlFreeDoc(doc);
return newxml;
}
/*
* "vol-clone" command
*/
static const vshCmdInfo info_vol_clone[] = {
{.name = "help",
.data = N_("clone a volume.")
},
{.name = "desc",
.data = N_("Clone an existing volume within the parent pool.")
},
{.name = NULL}
};
static const vshCmdOptDef opts_vol_clone[] = {
VIRSH_COMMON_OPT_VOLUME_VOL,
{.name = "newname",
.type = VSH_OT_DATA,
.flags = VSH_OFLAG_REQ,
.help = N_("clone name")
},
VIRSH_COMMON_OPT_POOL_OPTIONAL,
{.name = "prealloc-metadata",
.type = VSH_OT_BOOL,
.help = N_("preallocate metadata (for qcow2 instead of full allocation)")
},
{.name = "reflink",
.type = VSH_OT_BOOL,
.help = N_("use btrfs COW lightweight copy")
},
{.name = NULL}
};
static bool
cmdVolClone(vshControl *ctl, const vshCmd *cmd)
{
virStoragePoolPtr origpool = NULL;
virStorageVolPtr origvol = NULL, newvol = NULL;
const char *name = NULL;
char *origxml = NULL;
xmlChar *newxml = NULL;
bool ret = false;
unsigned int flags = 0;
if (!(origvol = virshCommandOptVol(ctl, cmd, "vol", "pool", NULL)))
goto cleanup;
if (vshCommandOptBool(cmd, "prealloc-metadata"))
flags |= VIR_STORAGE_VOL_CREATE_PREALLOC_METADATA;
if (vshCommandOptBool(cmd, "reflink"))
flags |= VIR_STORAGE_VOL_CREATE_REFLINK;
origpool = virStoragePoolLookupByVolume(origvol);
if (!origpool) {
vshError(ctl, "%s", _("failed to get parent pool"));
goto cleanup;
}
if (vshCommandOptStringReq(ctl, cmd, "newname", &name) < 0)
goto cleanup;
origxml = virStorageVolGetXMLDesc(origvol, 0);
if (!origxml)
goto cleanup;
newxml = virshMakeCloneXML(origxml, name);
if (!newxml) {
vshPrint(ctl, "%s", _("Failed to allocate XML buffer"));
goto cleanup;
}
newvol = virStorageVolCreateXMLFrom(origpool, (char *) newxml, origvol, flags);
if (newvol != NULL) {
vshPrint(ctl, _("Vol %s cloned from %s\n"),
virStorageVolGetName(newvol), virStorageVolGetName(origvol));
} else {
vshError(ctl, _("Failed to clone vol from %s"),
virStorageVolGetName(origvol));
goto cleanup;
}
ret = true;
cleanup:
VIR_FREE(origxml);
xmlFree(newxml);
if (origvol)
virStorageVolFree(origvol);
if (newvol)
virStorageVolFree(newvol);
if (origpool)
virStoragePoolFree(origpool);
return ret;
}
/*
* "vol-upload" command
*/
static const vshCmdInfo info_vol_upload[] = {
{.name = "help",
.data = N_("upload file contents to a volume")
},
{.name = "desc",
.data = N_("Upload file contents to a volume")
},
{.name = NULL}
};
static const vshCmdOptDef opts_vol_upload[] = {
VIRSH_COMMON_OPT_VOLUME_VOL,
VIRSH_COMMON_OPT_FILE(N_("file")),
VIRSH_COMMON_OPT_POOL_OPTIONAL,
{.name = "offset",
.type = VSH_OT_INT,
.help = N_("volume offset to upload to")
},
{.name = "length",
.type = VSH_OT_INT,
.help = N_("amount of data to upload")
},
{.name = NULL}
};
static int
cmdVolUploadSource(virStreamPtr st ATTRIBUTE_UNUSED,
char *bytes, size_t nbytes, void *opaque)
{
int *fd = opaque;
return saferead(*fd, bytes, nbytes);
}
static bool
cmdVolUpload(vshControl *ctl, const vshCmd *cmd)
{
const char *file = NULL;
virStorageVolPtr vol = NULL;
bool ret = false;
int fd = -1;
virStreamPtr st = NULL;
const char *name = NULL;
unsigned long long offset = 0, length = 0;
virshControlPtr priv = ctl->privData;
if (vshCommandOptULongLong(ctl, cmd, "offset", &offset) < 0)
return false;
if (vshCommandOptULongLongWrap(ctl, cmd, "length", &length) < 0)
return false;
if (!(vol = virshCommandOptVol(ctl, cmd, "vol", "pool", &name)))
return false;
if (vshCommandOptStringReq(ctl, cmd, "file", &file) < 0)
goto cleanup;
if ((fd = open(file, O_RDONLY)) < 0) {
vshError(ctl, _("cannot read %s"), file);
goto cleanup;
}
if (!(st = virStreamNew(priv->conn, 0))) {
vshError(ctl, _("cannot create a new stream"));
goto cleanup;
}
if (virStorageVolUpload(vol, st, offset, length, 0) < 0) {
vshError(ctl, _("cannot upload to volume %s"), name);
goto cleanup;
}
if (virStreamSendAll(st, cmdVolUploadSource, &fd) < 0) {
vshError(ctl, _("cannot send data to volume %s"), name);
goto cleanup;
}
if (VIR_CLOSE(fd) < 0) {
vshError(ctl, _("cannot close file %s"), file);
virStreamAbort(st);
goto cleanup;
}
if (virStreamFinish(st) < 0) {
vshError(ctl, _("cannot close volume %s"), name);
goto cleanup;
}
ret = true;
cleanup:
if (vol)
virStorageVolFree(vol);
if (st)
virStreamFree(st);
VIR_FORCE_CLOSE(fd);
return ret;
}
/*
* "vol-download" command
*/
static const vshCmdInfo info_vol_download[] = {
{.name = "help",
.data = N_("download volume contents to a file")
},
{.name = "desc",
.data = N_("Download volume contents to a file")
},
{.name = NULL}
};
static const vshCmdOptDef opts_vol_download[] = {
VIRSH_COMMON_OPT_VOLUME_VOL,
VIRSH_COMMON_OPT_FILE(N_("file")),
VIRSH_COMMON_OPT_POOL_OPTIONAL,
{.name = "offset",
.type = VSH_OT_INT,
.help = N_("volume offset to download from")
},
{.name = "length",
.type = VSH_OT_INT,
.help = N_("amount of data to download")
},
{.name = NULL}
};
static bool
cmdVolDownload(vshControl *ctl, const vshCmd *cmd)
{
const char *file = NULL;
virStorageVolPtr vol = NULL;
bool ret = false;
int fd = -1;
virStreamPtr st = NULL;
const char *name = NULL;
unsigned long long offset = 0, length = 0;
bool created = false;
virshControlPtr priv = ctl->privData;
if (vshCommandOptULongLong(ctl, cmd, "offset", &offset) < 0)
return false;
if (vshCommandOptULongLongWrap(ctl, cmd, "length", &length) < 0)
return false;
if (!(vol = virshCommandOptVol(ctl, cmd, "vol", "pool", &name)))
return false;
if (vshCommandOptStringReq(ctl, cmd, "file", &file) < 0)
goto cleanup;
if ((fd = open(file, O_WRONLY|O_CREAT|O_EXCL, 0666)) < 0) {
if (errno != EEXIST ||
(fd = open(file, O_WRONLY|O_TRUNC, 0666)) < 0) {
vshError(ctl, _("cannot create %s"), file);
goto cleanup;
}
} else {
created = true;
}
if (!(st = virStreamNew(priv->conn, 0))) {
vshError(ctl, _("cannot create a new stream"));
goto cleanup;
}
if (virStorageVolDownload(vol, st, offset, length, 0) < 0) {
vshError(ctl, _("cannot download from volume %s"), name);
goto cleanup;
}
if (virStreamRecvAll(st, virshStreamSink, &fd) < 0) {
vshError(ctl, _("cannot receive data from volume %s"), name);
goto cleanup;
}
if (VIR_CLOSE(fd) < 0) {
vshError(ctl, _("cannot close file %s"), file);
virStreamAbort(st);
goto cleanup;
}
if (virStreamFinish(st) < 0) {
vshError(ctl, _("cannot close volume %s"), name);
goto cleanup;
}
ret = true;
cleanup:
VIR_FORCE_CLOSE(fd);
if (!ret && created)
unlink(file);
if (vol)
virStorageVolFree(vol);
if (st)
virStreamFree(st);
return ret;
}
/*
* "vol-delete" command
*/
static const vshCmdInfo info_vol_delete[] = {
{.name = "help",
.data = N_("delete a vol")
},
{.name = "desc",
.data = N_("Delete a given vol.")
},
{.name = NULL}
};
static const vshCmdOptDef opts_vol_delete[] = {
VIRSH_COMMON_OPT_VOLUME_VOL,
VIRSH_COMMON_OPT_POOL_OPTIONAL,
{.name = "delete-snapshots",
.type = VSH_OT_BOOL,
.help = N_("delete snapshots associated with volume (must be "
"supported by storage driver)")
},
{.name = NULL}
};
static bool
cmdVolDelete(vshControl *ctl, const vshCmd *cmd)
{
virStorageVolPtr vol;
bool ret = true;
const char *name;
bool delete_snapshots = vshCommandOptBool(cmd, "delete-snapshots");
unsigned int flags = 0;
if (!(vol = virshCommandOptVol(ctl, cmd, "vol", "pool", &name)))
return false;
if (delete_snapshots)
flags |= VIR_STORAGE_VOL_DELETE_WITH_SNAPSHOTS;
if (virStorageVolDelete(vol, flags) == 0) {
vshPrint(ctl, _("Vol %s deleted\n"), name);
} else {
vshError(ctl, _("Failed to delete vol %s"), name);
ret = false;
}
virStorageVolFree(vol);
return ret;
}
/*
* "vol-wipe" command
*/
static const vshCmdInfo info_vol_wipe[] = {
{.name = "help",
.data = N_("wipe a vol")
},
{.name = "desc",
.data = N_("Ensure data previously on a volume is not accessible to future reads")
},
{.name = NULL}
};
static const vshCmdOptDef opts_vol_wipe[] = {
VIRSH_COMMON_OPT_VOLUME_VOL,
VIRSH_COMMON_OPT_POOL_OPTIONAL,
{.name = "algorithm",
.type = VSH_OT_STRING,
.help = N_("perform selected wiping algorithm")
},
{.name = NULL}
};
VIR_ENUM_DECL(virStorageVolWipeAlgorithm)
VIR_ENUM_IMPL(virStorageVolWipeAlgorithm, VIR_STORAGE_VOL_WIPE_ALG_LAST,
"zero", "nnsa", "dod", "bsi", "gutmann", "schneier",
"pfitzner7", "pfitzner33", "random", "trim");
static bool
cmdVolWipe(vshControl *ctl, const vshCmd *cmd)
{
virStorageVolPtr vol;
bool ret = false;
const char *name;
const char *algorithm_str = NULL;
int algorithm = VIR_STORAGE_VOL_WIPE_ALG_ZERO;
int funcRet;
if (!(vol = virshCommandOptVol(ctl, cmd, "vol", "pool", &name)))
return false;
if (vshCommandOptStringReq(ctl, cmd, "algorithm", &algorithm_str) < 0)
goto out;
if (algorithm_str &&
(algorithm = virStorageVolWipeAlgorithmTypeFromString(algorithm_str)) < 0) {
vshError(ctl, _("Unsupported algorithm '%s'"), algorithm_str);
goto out;
}
if ((funcRet = virStorageVolWipePattern(vol, algorithm, 0)) < 0) {
if (last_error->code == VIR_ERR_NO_SUPPORT &&
algorithm == VIR_STORAGE_VOL_WIPE_ALG_ZERO)
funcRet = virStorageVolWipe(vol, 0);
}
if (funcRet < 0) {
vshError(ctl, _("Failed to wipe vol %s"), name);
goto out;
}
vshPrint(ctl, _("Vol %s wiped\n"), name);
ret = true;
out:
virStorageVolFree(vol);
return ret;
}
VIR_ENUM_DECL(virshStorageVol)
VIR_ENUM_IMPL(virshStorageVol,
VIR_STORAGE_VOL_LAST,
N_("file"),
N_("block"),
N_("dir"),
N_("network"),
N_("netdir"),
N_("ploop"))
static const char *
virshVolumeTypeToString(int type)
{
const char *str = virshStorageVolTypeToString(type);
return str ? _(str) : _("unknown");
}
/*
* "vol-info" command
*/
static const vshCmdInfo info_vol_info[] = {
{.name = "help",
.data = N_("storage vol information")
},
{.name = "desc",
.data = N_("Returns basic information about the storage vol.")
},
{.name = NULL}
};
static const vshCmdOptDef opts_vol_info[] = {
VIRSH_COMMON_OPT_VOLUME_VOL,
VIRSH_COMMON_OPT_POOL_OPTIONAL,
{.name = "bytes",
.type = VSH_OT_BOOL,
.help = N_("sizes are represented in bytes rather than pretty units")
},
{.name = NULL}
};
static bool
cmdVolInfo(vshControl *ctl, const vshCmd *cmd)
{
virStorageVolInfo info;
virStorageVolPtr vol;
bool bytes = vshCommandOptBool(cmd, "bytes");
bool ret = true;
if (!(vol = virshCommandOptVol(ctl, cmd, "vol", "pool", NULL)))
return false;
vshPrint(ctl, "%-15s %s\n", _("Name:"), virStorageVolGetName(vol));
if (virStorageVolGetInfo(vol, &info) == 0) {
double val;
const char *unit;
vshPrint(ctl, "%-15s %s\n", _("Type:"),
virshVolumeTypeToString(info.type));
if (bytes) {
vshPrint(ctl, "%-15s %llu %s\n", _("Capacity:"),
info.capacity, _("bytes"));
} else {
val = vshPrettyCapacity(info.capacity, &unit);
vshPrint(ctl, "%-15s %2.2lf %s\n", _("Capacity:"), val, unit);
}
if (bytes) {
vshPrint(ctl, "%-15s %llu %s\n", _("Allocation:"),
info.allocation, _("bytes"));
} else {
val = vshPrettyCapacity(info.allocation, &unit);
vshPrint(ctl, "%-15s %2.2lf %s\n", _("Allocation:"), val, unit);
}
} else {
ret = false;
}
virStorageVolFree(vol);
return ret;
}
/*
* "vol-resize" command
*/
static const vshCmdInfo info_vol_resize[] = {
{.name = "help",
.data = N_("resize a vol")
},
{.name = "desc",
.data = N_("Resizes a storage volume.")
},
{.name = NULL}
};
static const vshCmdOptDef opts_vol_resize[] = {
VIRSH_COMMON_OPT_VOLUME_VOL,
{.name = "capacity",
.type = VSH_OT_DATA,
.flags = VSH_OFLAG_REQ,
.help = N_("new capacity for the vol, as scaled integer (default bytes)")
},
VIRSH_COMMON_OPT_POOL_OPTIONAL,
{.name = "allocate",
.type = VSH_OT_BOOL,
.help = N_("allocate the new capacity, rather than leaving it sparse")
},
{.name = "delta",
.type = VSH_OT_BOOL,
.help = N_("use capacity as a delta to current size, rather than the new size")
},
{.name = "shrink",
.type = VSH_OT_BOOL,
.help = N_("allow the resize to shrink the volume")
},
{.name = NULL}
};
static bool
cmdVolResize(vshControl *ctl, const vshCmd *cmd)
{
virStorageVolPtr vol;
const char *capacityStr = NULL;
unsigned long long capacity = 0;
unsigned int flags = 0;
bool ret = false;
bool delta = vshCommandOptBool(cmd, "delta");
if (vshCommandOptBool(cmd, "allocate"))
flags |= VIR_STORAGE_VOL_RESIZE_ALLOCATE;
if (vshCommandOptBool(cmd, "shrink"))
flags |= VIR_STORAGE_VOL_RESIZE_SHRINK;
if (!(vol = virshCommandOptVol(ctl, cmd, "vol", "pool", NULL)))
return false;
if (vshCommandOptStringReq(ctl, cmd, "capacity", &capacityStr) < 0)
goto cleanup;
virSkipSpaces(&capacityStr);
if (*capacityStr == '-') {
/* The API always requires a positive value; but we allow a
* negative value for convenience. */
if (vshCommandOptBool(cmd, "shrink")) {
capacityStr++;
delta = true;
} else {
vshError(ctl, "%s",
_("negative size requires --shrink"));
goto cleanup;
}
}
if (delta)
flags |= VIR_STORAGE_VOL_RESIZE_DELTA;
if (virshVolSize(capacityStr, &capacity) < 0) {
vshError(ctl, _("Malformed size %s"), capacityStr);
goto cleanup;
}
if (virStorageVolResize(vol, capacity, flags) == 0) {
vshPrint(ctl,
delta ? _("Size of volume '%s' successfully changed by %s\n")
: _("Size of volume '%s' successfully changed to %s\n"),
virStorageVolGetName(vol), capacityStr);
ret = true;
} else {
vshError(ctl,
delta ? _("Failed to change size of volume '%s' by %s\n")
: _("Failed to change size of volume '%s' to %s\n"),
virStorageVolGetName(vol), capacityStr);
ret = false;
}
cleanup:
virStorageVolFree(vol);
return ret;
}
/*
* "vol-dumpxml" command
*/
static const vshCmdInfo info_vol_dumpxml[] = {
{.name = "help",
.data = N_("vol information in XML")
},
{.name = "desc",
.data = N_("Output the vol information as an XML dump to stdout.")
},
{.name = NULL}
};
static const vshCmdOptDef opts_vol_dumpxml[] = {
VIRSH_COMMON_OPT_VOLUME_VOL,
VIRSH_COMMON_OPT_POOL_OPTIONAL,
{.name = NULL}
};
static bool
cmdVolDumpXML(vshControl *ctl, const vshCmd *cmd)
{
virStorageVolPtr vol;
bool ret = true;
char *dump;
if (!(vol = virshCommandOptVol(ctl, cmd, "vol", "pool", NULL)))
return false;
dump = virStorageVolGetXMLDesc(vol, 0);
if (dump != NULL) {
vshPrint(ctl, "%s", dump);
VIR_FREE(dump);
} else {
ret = false;
}
virStorageVolFree(vol);
return ret;
}
static int
virshStorageVolSorter(const void *a, const void *b)
{
virStorageVolPtr *va = (virStorageVolPtr *) a;
virStorageVolPtr *vb = (virStorageVolPtr *) b;
if (*va && !*vb)
return -1;
if (!*va)
return *vb != NULL;
return vshStrcasecmp(virStorageVolGetName(*va),
virStorageVolGetName(*vb));
}
struct virshStorageVolList {
virStorageVolPtr *vols;
size_t nvols;
};
typedef struct virshStorageVolList *virshStorageVolListPtr;
static void
virshStorageVolListFree(virshStorageVolListPtr list)
{
size_t i;
if (list && list->vols) {
for (i = 0; i < list->nvols; i++) {
if (list->vols[i])
virStorageVolFree(list->vols[i]);
}
VIR_FREE(list->vols);
}
VIR_FREE(list);
}
static virshStorageVolListPtr
virshStorageVolListCollect(vshControl *ctl,
virStoragePoolPtr pool,
unsigned int flags)
{
virshStorageVolListPtr list = vshMalloc(ctl, sizeof(*list));
size_t i;
char **names = NULL;
virStorageVolPtr vol = NULL;
bool success = false;
size_t deleted = 0;
int nvols = 0;
int ret = -1;
/* try the list with flags support (0.10.2 and later) */
if ((ret = virStoragePoolListAllVolumes(pool,
&list->vols,
flags)) >= 0) {
list->nvols = ret;
goto finished;
}
/* check if the command is actually supported */
if (last_error && last_error->code == VIR_ERR_NO_SUPPORT)
goto fallback;
/* there was an error during the call */
vshError(ctl, "%s", _("Failed to list volumes"));
goto cleanup;
fallback:
/* fall back to old method (0.10.1 and older) */
vshResetLibvirtError();
/* Determine the number of volumes in the pool */
if ((nvols = virStoragePoolNumOfVolumes(pool)) < 0) {
vshError(ctl, "%s", _("Failed to list storage volumes"));
goto cleanup;
}
if (nvols == 0) {
success = true;
return list;
}
/* Retrieve the list of volume names in the pool */
names = vshCalloc(ctl, nvols, sizeof(*names));
if ((nvols = virStoragePoolListVolumes(pool, names, nvols)) < 0) {
vshError(ctl, "%s", _("Failed to list storage volumes"));
goto cleanup;
}
list->vols = vshMalloc(ctl, sizeof(virStorageVolPtr) * (nvols));
list->nvols = 0;
/* get the vols */
for (i = 0; i < nvols; i++) {
if (!(vol = virStorageVolLookupByName(pool, names[i])))
continue;
list->vols[list->nvols++] = vol;
}
/* truncate the list for not found vols */
deleted = nvols - list->nvols;
finished:
/* sort the list */
if (list->vols && list->nvols)
qsort(list->vols, list->nvols, sizeof(*list->vols), virshStorageVolSorter);
if (deleted)
VIR_SHRINK_N(list->vols, list->nvols, deleted);
success = true;
cleanup:
if (nvols > 0)
for (i = 0; i < nvols; i++)
VIR_FREE(names[i]);
VIR_FREE(names);
if (!success) {
virshStorageVolListFree(list);
list = NULL;
}
return list;
}
/*
* "vol-list" command
*/
static const vshCmdInfo info_vol_list[] = {
{.name = "help",
.data = N_("list vols")
},
{.name = "desc",
.data = N_("Returns list of vols by pool.")
},
{.name = NULL}
};
static const vshCmdOptDef opts_vol_list[] = {
VIRSH_COMMON_OPT_POOL_FULL,
{.name = "details",
.type = VSH_OT_BOOL,
.help = N_("display extended details for volumes")
},
{.name = NULL}
};
static bool
cmdVolList(vshControl *ctl, const vshCmd *cmd ATTRIBUTE_UNUSED)
{
virStorageVolInfo volumeInfo;
virStoragePoolPtr pool;
char *outputStr = NULL;
const char *unit;
double val;
bool details = vshCommandOptBool(cmd, "details");
size_t i;
bool ret = false;
int stringLength = 0;
size_t allocStrLength = 0, capStrLength = 0;
size_t nameStrLength = 0, pathStrLength = 0;
size_t typeStrLength = 0;
struct volInfoText {
char *allocation;
char *capacity;
char *path;
char *type;
};
struct volInfoText *volInfoTexts = NULL;
virshStorageVolListPtr list = NULL;
/* Look up the pool information given to us by the user */
if (!(pool = virshCommandOptPool(ctl, cmd, "pool", NULL)))
return false;
if (!(list = virshStorageVolListCollect(ctl, pool, 0)))
goto cleanup;
if (list->nvols > 0)
volInfoTexts = vshCalloc(ctl, list->nvols, sizeof(*volInfoTexts));
/* Collect the rest of the volume information for display */
for (i = 0; i < list->nvols; i++) {
/* Retrieve volume info */
virStorageVolPtr vol = list->vols[i];
/* Retrieve the volume path */
if ((volInfoTexts[i].path = virStorageVolGetPath(vol)) == NULL) {
/* Something went wrong retrieving a volume path, cope with it */
volInfoTexts[i].path = vshStrdup(ctl, _("unknown"));
}
/* If requested, retrieve volume type and sizing information */
if (details) {
if (virStorageVolGetInfo(vol, &volumeInfo) != 0) {
/* Something went wrong retrieving volume info, cope with it */
volInfoTexts[i].allocation = vshStrdup(ctl, _("unknown"));
volInfoTexts[i].capacity = vshStrdup(ctl, _("unknown"));
volInfoTexts[i].type = vshStrdup(ctl, _("unknown"));
} else {
/* Convert the returned volume info into output strings */
/* Volume type */
volInfoTexts[i].type = vshStrdup(ctl,
virshVolumeTypeToString(volumeInfo.type));
val = vshPrettyCapacity(volumeInfo.capacity, &unit);
if (virAsprintf(&volInfoTexts[i].capacity,
"%.2lf %s", val, unit) < 0)
goto cleanup;
val = vshPrettyCapacity(volumeInfo.allocation, &unit);
if (virAsprintf(&volInfoTexts[i].allocation,
"%.2lf %s", val, unit) < 0)
goto cleanup;
}
/* Remember the largest length for each output string.
* This lets us displaying header and volume information rows
* using a single, properly sized, printf style output string.
*/
/* Keep the length of name string if longest so far */
stringLength = strlen(virStorageVolGetName(list->vols[i]));
if (stringLength > nameStrLength)
nameStrLength = stringLength;
/* Keep the length of path string if longest so far */
stringLength = strlen(volInfoTexts[i].path);
if (stringLength > pathStrLength)
pathStrLength = stringLength;
/* Keep the length of type string if longest so far */
stringLength = strlen(volInfoTexts[i].type);
if (stringLength > typeStrLength)
typeStrLength = stringLength;
/* Keep the length of capacity string if longest so far */
stringLength = strlen(volInfoTexts[i].capacity);
if (stringLength > capStrLength)
capStrLength = stringLength;
/* Keep the length of allocation string if longest so far */
stringLength = strlen(volInfoTexts[i].allocation);
if (stringLength > allocStrLength)
allocStrLength = stringLength;
}
}
/* If the --details option wasn't selected, we output the volume
* info using the fixed string format from previous versions to
* maintain backward compatibility.
*/
/* Output basic info then return if --details option not selected */
if (!details) {
/* The old output format */
vshPrintExtra(ctl, " %-20s %-40s\n", _("Name"), _("Path"));
vshPrintExtra(ctl, "---------------------------------------"
"---------------------------------------\n");
for (i = 0; i < list->nvols; i++) {
vshPrint(ctl, " %-20s %-40s\n", virStorageVolGetName(list->vols[i]),
volInfoTexts[i].path);
}
/* Cleanup and return */
ret = true;
goto cleanup;
}
/* We only get here if the --details option was selected. */
/* Use the length of name header string if it's longest */
stringLength = strlen(_("Name"));
if (stringLength > nameStrLength)
nameStrLength = stringLength;
/* Use the length of path header string if it's longest */
stringLength = strlen(_("Path"));
if (stringLength > pathStrLength)
pathStrLength = stringLength;
/* Use the length of type header string if it's longest */
stringLength = strlen(_("Type"));
if (stringLength > typeStrLength)
typeStrLength = stringLength;
/* Use the length of capacity header string if it's longest */
stringLength = strlen(_("Capacity"));
if (stringLength > capStrLength)
capStrLength = stringLength;
/* Use the length of allocation header string if it's longest */
stringLength = strlen(_("Allocation"));
if (stringLength > allocStrLength)
allocStrLength = stringLength;
/* Display the string lengths for debugging */
vshDebug(ctl, VSH_ERR_DEBUG,
"Longest name string = %zu chars\n", nameStrLength);
vshDebug(ctl, VSH_ERR_DEBUG,
"Longest path string = %zu chars\n", pathStrLength);
vshDebug(ctl, VSH_ERR_DEBUG,
"Longest type string = %zu chars\n", typeStrLength);
vshDebug(ctl, VSH_ERR_DEBUG,
"Longest capacity string = %zu chars\n", capStrLength);
vshDebug(ctl, VSH_ERR_DEBUG,
"Longest allocation string = %zu chars\n", allocStrLength);
if (virAsprintf(&outputStr,
" %%-%lus %%-%lus %%-%lus %%%lus %%%lus\n",
(unsigned long) nameStrLength,
(unsigned long) pathStrLength,
(unsigned long) typeStrLength,
(unsigned long) capStrLength,
(unsigned long) allocStrLength) < 0)
goto cleanup;
/* Display the header */
vshPrint(ctl, outputStr, _("Name"), _("Path"), _("Type"),
("Capacity"), _("Allocation"));
for (i = nameStrLength + pathStrLength + typeStrLength
+ capStrLength + allocStrLength
+ 10; i > 0; i--)
vshPrintExtra(ctl, "-");
vshPrintExtra(ctl, "\n");
/* Display the volume info rows */
for (i = 0; i < list->nvols; i++) {
vshPrint(ctl, outputStr,
virStorageVolGetName(list->vols[i]),
volInfoTexts[i].path,
volInfoTexts[i].type,
volInfoTexts[i].capacity,
volInfoTexts[i].allocation);
}
/* Cleanup and return */
ret = true;
cleanup:
/* Safely free the memory allocated in this function */
if (list && list->nvols) {
for (i = 0; i < list->nvols; i++) {
/* Cleanup the memory for one volume info structure per loop */
VIR_FREE(volInfoTexts[i].path);
VIR_FREE(volInfoTexts[i].type);
VIR_FREE(volInfoTexts[i].capacity);
VIR_FREE(volInfoTexts[i].allocation);
}
}
/* Cleanup remaining memory */
VIR_FREE(outputStr);
VIR_FREE(volInfoTexts);
virStoragePoolFree(pool);
virshStorageVolListFree(list);
/* Return the desired value */
return ret;
}
/*
* "vol-name" command
*/
static const vshCmdInfo info_vol_name[] = {
{.name = "help",
.data = N_("returns the volume name for a given volume key or path")
},
{.name = "desc",
.data = ""
},
{.name = NULL}
};
static const vshCmdOptDef opts_vol_name[] = {
{.name = "vol",
.type = VSH_OT_DATA,
.flags = VSH_OFLAG_REQ,
.help = N_("volume key or path")
},
{.name = NULL}
};
static bool
cmdVolName(vshControl *ctl, const vshCmd *cmd)
{
virStorageVolPtr vol;
if (!(vol = virshCommandOptVolBy(ctl, cmd, "vol", NULL, NULL,
VIRSH_BYUUID)))
return false;
vshPrint(ctl, "%s\n", virStorageVolGetName(vol));
virStorageVolFree(vol);
return true;
}
/*
* "vol-pool" command
*/
static const vshCmdInfo info_vol_pool[] = {
{.name = "help",
.data = N_("returns the storage pool for a given volume key or path")
},
{.name = "desc",
.data = ""
},
{.name = NULL}
};
static const vshCmdOptDef opts_vol_pool[] = {
{.name = "vol",
.type = VSH_OT_DATA,
.flags = VSH_OFLAG_REQ,
.help = N_("volume key or path")
},
{.name = "uuid",
.type = VSH_OT_BOOL,
.help = N_("return the pool uuid rather than pool name")
},
{.name = NULL}
};
static bool
cmdVolPool(vshControl *ctl, const vshCmd *cmd)
{
virStoragePoolPtr pool;
virStorageVolPtr vol;
char uuid[VIR_UUID_STRING_BUFLEN];
/* Use the supplied string to locate the volume */
if (!(vol = virshCommandOptVolBy(ctl, cmd, "vol", NULL, NULL,
VIRSH_BYUUID))) {
return false;
}
/* Look up the parent storage pool for the volume */
pool = virStoragePoolLookupByVolume(vol);
if (pool == NULL) {
vshError(ctl, "%s", _("failed to get parent pool"));
virStorageVolFree(vol);
return false;
}
/* Return the requested details of the parent storage pool */
if (vshCommandOptBool(cmd, "uuid")) {
/* Retrieve and return pool UUID string */
if (virStoragePoolGetUUIDString(pool, &uuid[0]) == 0)
vshPrint(ctl, "%s\n", uuid);
} else {
/* Return the storage pool name */
vshPrint(ctl, "%s\n", virStoragePoolGetName(pool));
}
/* Cleanup */
virStorageVolFree(vol);
virStoragePoolFree(pool);
return true;
}
/*
* "vol-key" command
*/
static const vshCmdInfo info_vol_key[] = {
{.name = "help",
.data = N_("returns the volume key for a given volume name or path")
},
{.name = "desc",
.data = ""
},
{.name = NULL}
};
static const vshCmdOptDef opts_vol_key[] = {
{.name = "vol",
.type = VSH_OT_DATA,
.flags = VSH_OFLAG_REQ,
.help = N_("volume name or path")
},
VIRSH_COMMON_OPT_POOL_OPTIONAL,
{.name = NULL}
};
static bool
cmdVolKey(vshControl *ctl, const vshCmd *cmd)
{
virStorageVolPtr vol;
if (!(vol = virshCommandOptVol(ctl, cmd, "vol", "pool", NULL)))
return false;
vshPrint(ctl, "%s\n", virStorageVolGetKey(vol));
virStorageVolFree(vol);
return true;
}
/*
* "vol-path" command
*/
static const vshCmdInfo info_vol_path[] = {
{.name = "help",
.data = N_("returns the volume path for a given volume name or key")
},
{.name = "desc",
.data = ""
},
{.name = NULL}
};
static const vshCmdOptDef opts_vol_path[] = {
{.name = "vol",
.type = VSH_OT_DATA,
.flags = VSH_OFLAG_REQ,
.help = N_("volume name or key")
},
VIRSH_COMMON_OPT_POOL_OPTIONAL,
{.name = NULL}
};
static bool
cmdVolPath(vshControl *ctl, const vshCmd *cmd)
{
virStorageVolPtr vol;
char * StorageVolPath;
if (!(vol = virshCommandOptVol(ctl, cmd, "vol", "pool", NULL)))
return false;
if ((StorageVolPath = virStorageVolGetPath(vol)) == NULL) {
virStorageVolFree(vol);
return false;
}
vshPrint(ctl, "%s\n", StorageVolPath);
VIR_FREE(StorageVolPath);
virStorageVolFree(vol);
return true;
}
const vshCmdDef storageVolCmds[] = {
{.name = "vol-clone",
.handler = cmdVolClone,
.opts = opts_vol_clone,
.info = info_vol_clone,
.flags = 0
},
{.name = "vol-create-as",
.handler = cmdVolCreateAs,
.opts = opts_vol_create_as,
.info = info_vol_create_as,
.flags = 0
},
{.name = "vol-create",
.handler = cmdVolCreate,
.opts = opts_vol_create,
.info = info_vol_create,
.flags = 0
},
{.name = "vol-create-from",
.handler = cmdVolCreateFrom,
.opts = opts_vol_create_from,
.info = info_vol_create_from,
.flags = 0
},
{.name = "vol-delete",
.handler = cmdVolDelete,
.opts = opts_vol_delete,
.info = info_vol_delete,
.flags = 0
},
{.name = "vol-download",
.handler = cmdVolDownload,
.opts = opts_vol_download,
.info = info_vol_download,
.flags = 0
},
{.name = "vol-dumpxml",
.handler = cmdVolDumpXML,
.opts = opts_vol_dumpxml,
.info = info_vol_dumpxml,
.flags = 0
},
{.name = "vol-info",
.handler = cmdVolInfo,
.opts = opts_vol_info,
.info = info_vol_info,
.flags = 0
},
{.name = "vol-key",
.handler = cmdVolKey,
.opts = opts_vol_key,
.info = info_vol_key,
.flags = 0
},
{.name = "vol-list",
.handler = cmdVolList,
.opts = opts_vol_list,
.info = info_vol_list,
.flags = 0
},
{.name = "vol-name",
.handler = cmdVolName,
.opts = opts_vol_name,
.info = info_vol_name,
.flags = 0
},
{.name = "vol-path",
.handler = cmdVolPath,
.opts = opts_vol_path,
.info = info_vol_path,
.flags = 0
},
{.name = "vol-pool",
.handler = cmdVolPool,
.opts = opts_vol_pool,
.info = info_vol_pool,
.flags = 0
},
{.name = "vol-resize",
.handler = cmdVolResize,
.opts = opts_vol_resize,
.info = info_vol_resize,
.flags = 0
},
{.name = "vol-upload",
.handler = cmdVolUpload,
.opts = opts_vol_upload,
.info = info_vol_upload,
.flags = 0
},
{.name = "vol-wipe",
.handler = cmdVolWipe,
.opts = opts_vol_wipe,
.info = info_vol_wipe,
.flags = 0
},
{.name = NULL}
};
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