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Added convenience virsh command for creating pools/volumes without XML

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This commit is contained in:
Daniel P. Berrange 2008-02-20 15:29:13 +00:00
parent 816fd02876
commit f43e709842
11 changed files with 402 additions and 30 deletions
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10
ChangeLog
View File

@ -1,3 +1,13 @@
Wed Feb 20 10:23:27 EST 2008 Daniel P. Berrange <berrange@redhat.com>
* src/virsh.c: Added convenience methods for creating pools
and volumes without XML
* src/buf.c, src/buf.h, src/libvirt_sym.version: Export the
virBuffer* methods to virsh
* src/xend_internal.c, src/xm_intenral.c, src/xml.c,
src/qemu_conf.c
* src/util.c, src/util.h: Export virStrToLong_ull to virsh
Wed Feb 20 10:22:27 EST 2008 Daniel P. Berrange <berrange@redhat.com>
* src/virsh.c: Added commands for all storage APIs

11
src/buf.c
View File

@ -61,7 +61,7 @@ virBufferGrow(virBufferPtr buf, unsigned int len)
* Returns 0 successful, -1 in case of internal or API error.
*/
int
virBufferAdd(virBufferPtr buf, const char *str, int len)
__virBufferAdd(virBufferPtr buf, const char *str, int len)
{
unsigned int needSize;
@ -97,7 +97,7 @@ virBufferAdd(virBufferPtr buf, const char *str, int len)
* Returns 0 if successful, -1 in the case of error.
*/
int
virBufferAddChar (virBufferPtr buf, char c)
__virBufferAddChar (virBufferPtr buf, char c)
{
unsigned int needSize;
@ -190,7 +190,7 @@ virBufferContentAndFree (virBufferPtr buf)
* Returns 0 successful, -1 in case of internal or API error.
*/
int
virBufferVSprintf(virBufferPtr buf, const char *format, ...)
__virBufferVSprintf(virBufferPtr buf, const char *format, ...)
{
int size, count, grow_size;
va_list locarg, argptr;
@ -198,6 +198,11 @@ virBufferVSprintf(virBufferPtr buf, const char *format, ...)
if ((format == NULL) || (buf == NULL)) {
return (-1);
}
if (buf->size == 0 &&
virBufferGrow(buf, 100) < 0)
return -1;
size = buf->size - buf->use - 1;
va_start(argptr, format);
va_copy(locarg, argptr);

12
src/buf.h
View File

@ -29,15 +29,19 @@ struct _virBuffer {
virBufferPtr virBufferNew(unsigned int size);
void virBufferFree(virBufferPtr buf);
char *virBufferContentAndFree(virBufferPtr buf);
int virBufferAdd(virBufferPtr buf, const char *str, int len);
int virBufferAddChar(virBufferPtr buf, char c);
int virBufferVSprintf(virBufferPtr buf, const char *format, ...)
int __virBufferAdd(virBufferPtr buf, const char *str, int len);
int __virBufferAddChar(virBufferPtr buf, char c);
int __virBufferVSprintf(virBufferPtr buf, const char *format, ...)
ATTRIBUTE_FORMAT(printf, 2, 3);
int virBufferStrcat(virBufferPtr buf, ...);
int virBufferEscapeString(virBufferPtr buf, const char *format, const char *str);
int virBufferURIEncodeString (virBufferPtr buf, const char *str);
#define virBufferAddLit(buf_, literal_string_) \
virBufferAdd (buf_, "" literal_string_ "", sizeof literal_string_ - 1)
__virBufferAdd (buf_, "" literal_string_ "", sizeof literal_string_ - 1)
#define virBufferAdd(b,s,l) __virBufferAdd((b),(s),(l))
#define virBufferAddChar(b,c) __virBufferAddChar((b),(c))
#define virBufferVSprintf(b,f,...) __virBufferVSprintf((b),(f), __VA_ARGS__)
#endif /* __VIR_BUFFER_H__ */

5
src/libvirt_sym.version
View File

@ -178,6 +178,11 @@
__virFileReadAll;
__virStrToLong_i;
__virStrToLong_ull;
__virBufferVSprintf;
__virBufferAdd;
__virBufferAddChar;
local: *;
};

6
src/qemu_conf.c
View File

@ -2818,7 +2818,7 @@ char *qemudGenerateXML(virConnectPtr conn,
if (virBufferAddLit(buf, " <readonly/>\n") < 0)
goto no_memory;
if (virBufferVSprintf(buf, " </disk>\n") < 0)
if (virBufferAddLit(buf, " </disk>\n") < 0)
goto no_memory;
disk = disk->next;
@ -2889,7 +2889,7 @@ char *qemudGenerateXML(virConnectPtr conn,
}
}
if (virBufferVSprintf(buf, " </interface>\n") < 0)
if (virBufferAddLit(buf, " </interface>\n") < 0)
goto no_memory;
net = net->next;
@ -2974,7 +2974,7 @@ char *qemudGenerateNetworkXML(virConnectPtr conn,
if (!buf)
goto no_memory;
if (virBufferVSprintf(buf, "<network>\n") < 0)
if (virBufferAddLit(buf, "<network>\n") < 0)
goto no_memory;
if (virBufferVSprintf(buf, " <name>%s</name>\n", def->name) < 0)

2
src/util.c
View File

@ -613,7 +613,7 @@ virStrToLong_ll(char const *s, char **end_ptr, int base, long long *result)
/* Just like virStrToLong_i, above, but produce an "unsigned long long" value. */
int
virStrToLong_ull(char const *s, char **end_ptr, int base, unsigned long long *result)
__virStrToLong_ull(char const *s, char **end_ptr, int base, unsigned long long *result)
{
unsigned long long val;
char *p;

9
src/util.h
View File

@ -70,9 +70,10 @@ int virStrToLong_ll(char const *s,
char **end_ptr,
int base,
long long *result);
int virStrToLong_ull(char const *s,
char **end_ptr,
int base,
unsigned long long *result);
int __virStrToLong_ull(char const *s,
char **end_ptr,
int base,
unsigned long long *result);
#define virStrToLong_ull(s,e,b,r) __virStrToLong_ull((s),(e),(b),(r))
#endif /* __VIR_UTIL_H__ */

347
src/virsh.c
View File

@ -48,6 +48,7 @@
#include "console.h"
#include "util.h"
#include "buf.h"
static char *progname;
@ -240,6 +241,9 @@ static vshCmdOpt *vshCommandOpt(vshCmd * cmd, const char *name);
static int vshCommandOptInt(vshCmd * cmd, const char *name, int *found);
static char *vshCommandOptString(vshCmd * cmd, const char *name,
int *found);
#if 0
static int vshCommandOptStringList(vshCmd * cmd, const char *name, char ***data);
#endif
static int vshCommandOptBool(vshCmd * cmd, const char *name);
#define VSH_BYID (1 << 1)
@ -2851,6 +2855,100 @@ cmdPoolCreate(vshControl * ctl, vshCmd * cmd)
return ret;
}
/*
* "pool-create-as" command
*/
static vshCmdInfo info_pool_create_as[] = {
{"syntax", "pool-create-as <name> <type>"},
{"help", gettext_noop("create a pool from a set of args")},
{"desc", gettext_noop("Create a pool.")},
{NULL, NULL}
};
static vshCmdOptDef opts_pool_create_as[] = {
{"name", VSH_OT_DATA, VSH_OFLAG_REQ, gettext_noop("name of the pool")},
{"type", VSH_OT_DATA, VSH_OFLAG_REQ, gettext_noop("type of the pool")},
{"source-host", VSH_OT_DATA, 0, gettext_noop("source-host for underlying storage")},
{"source-path", VSH_OT_DATA, 0, gettext_noop("source path for underlying storage")},
{"source-dev", VSH_OT_DATA, 0, gettext_noop("source device for underlying storage")},
{"target", VSH_OT_DATA, 0, gettext_noop("target for underlying storage")},
{NULL, 0, 0, NULL}
};
static int
cmdPoolCreateAs(vshControl * ctl, vshCmd * cmd)
{
virStoragePoolPtr pool;
int found;
char *name, *type, *srcHost, *srcPath, *srcDev, *target;
virBuffer buf;
memset(&buf, 0, sizeof(buf));
if (!vshConnectionUsability(ctl, ctl->conn, TRUE))
return FALSE;
name = vshCommandOptString(cmd, "name", &found);
if (!found)
goto cleanup;
type = vshCommandOptString(cmd, "type", &found);
if (!found)
goto cleanup;
srcHost = vshCommandOptString(cmd, "source-host", &found);
srcPath = vshCommandOptString(cmd, "source-path", &found);
srcDev = vshCommandOptString(cmd, "source-dev", &found);
target = vshCommandOptString(cmd, "target", &found);
if (virBufferVSprintf(&buf, "<pool type='%s'>\n", type) < 0)
goto cleanup;
if (virBufferVSprintf(&buf, " <name>%s</name>\n", name) < 0)
goto cleanup;
if (srcHost || srcPath || srcDev) {
if (virBufferAddLit(&buf, " <source>\n") < 0)
goto cleanup;
if (srcHost &&
virBufferVSprintf(&buf, " <host name='%s'>\n", srcHost) < 0)
goto cleanup;
if (srcPath &&
virBufferVSprintf(&buf, " <dir path='%s'/>\n", srcPath) < 0)
goto cleanup;
if (srcDev &&
virBufferVSprintf(&buf, " <device path='%s'/>\n", srcDev) < 0)
goto cleanup;
if (virBufferAddLit(&buf, " </source>\n") < 0)
goto cleanup;
}
if (target) {
if (virBufferAddLit(&buf, " <target>\n") < 0)
goto cleanup;
if (virBufferVSprintf(&buf, " <path>%s</path>\n", target) < 0)
goto cleanup;
if (virBufferAddLit(&buf, " </target>\n") < 0)
goto cleanup;
}
if (virBufferAddLit(&buf, "</pool>\n") < 0)
goto cleanup;
pool = virStoragePoolCreateXML(ctl->conn, buf.content, 0);
free (buf.content);
if (pool != NULL) {
vshPrint(ctl, _("Pool %s created\n"), name);
virStoragePoolFree(pool);
return TRUE;
} else {
vshError(ctl, FALSE, _("Failed to create pool %s"), name);
return FALSE;
}
cleanup:
free(buf.content);
return FALSE;
}
/*
* "pool-define" command
@ -2900,6 +2998,101 @@ cmdPoolDefine(vshControl * ctl, vshCmd * cmd)
}
/*
* "pool-define-as" command
*/
static vshCmdInfo info_pool_define_as[] = {
{"syntax", "pool-define-as <name> <type>"},
{"help", gettext_noop("define a pool from a set of args")},
{"desc", gettext_noop("Define a pool.")},
{NULL, NULL}
};
static vshCmdOptDef opts_pool_define_as[] = {
{"name", VSH_OT_DATA, VSH_OFLAG_REQ, gettext_noop("name of the pool")},
{"type", VSH_OT_DATA, VSH_OFLAG_REQ, gettext_noop("type of the pool")},
{"source-host", VSH_OT_DATA, 0, gettext_noop("source-host for underlying storage")},
{"source-path", VSH_OT_DATA, 0, gettext_noop("source path for underlying storage")},
{"source-dev", VSH_OT_DATA, 0, gettext_noop("source device for underlying storage")},
{"target", VSH_OT_DATA, 0, gettext_noop("target for underlying storage")},
{NULL, 0, 0, NULL}
};
static int
cmdPoolDefineAs(vshControl * ctl, vshCmd * cmd)
{
virStoragePoolPtr pool;
int found;
char *name, *type, *srcHost, *srcPath, *srcDev, *target;
virBuffer buf;
memset(&buf, 0, sizeof(buf));
if (!vshConnectionUsability(ctl, ctl->conn, TRUE))
return FALSE;
name = vshCommandOptString(cmd, "name", &found);
if (!found)
goto cleanup;
type = vshCommandOptString(cmd, "type", &found);
if (!found)
goto cleanup;
srcHost = vshCommandOptString(cmd, "source-host", &found);
srcPath = vshCommandOptString(cmd, "source-path", &found);
srcDev = vshCommandOptString(cmd, "source-dev", &found);
target = vshCommandOptString(cmd, "target", &found);
if (virBufferVSprintf(&buf, "<pool type='%s'>\n", type) < 0)
goto cleanup;
if (virBufferVSprintf(&buf, " <name>%s</name>\n", name) < 0)
goto cleanup;
if (srcHost || srcPath || srcDev) {
if (virBufferAddLit(&buf, " <source>\n") < 0)
goto cleanup;
if (srcHost &&
virBufferVSprintf(&buf, " <host>%s</host>\n", srcHost) < 0)
goto cleanup;
if (srcPath &&
virBufferVSprintf(&buf, " <path>%s</path>\n", srcPath) < 0)
goto cleanup;
if (srcDev &&
virBufferVSprintf(&buf, " <device>%s</device>\n", srcDev) < 0)
goto cleanup;
if (virBufferAddLit(&buf, " </source>\n") < 0)
goto cleanup;
}
if (target) {
if (virBufferAddLit(&buf, " <target>\n") < 0)
goto cleanup;
if (virBufferVSprintf(&buf, " <path>%s</path>\n", target) < 0)
goto cleanup;
if (virBufferAddLit(&buf, " </target>\n") < 0)
goto cleanup;
}
if (virBufferAddLit(&buf, "</pool>\n") < 0)
goto cleanup;
pool = virStoragePoolDefineXML(ctl->conn, buf.content, 0);
free (buf.content);
if (pool != NULL) {
vshPrint(ctl, _("Pool %s defined\n"), name);
virStoragePoolFree(pool);
return TRUE;
} else {
vshError(ctl, FALSE, _("Failed to define pool %s"), name);
return FALSE;
}
cleanup:
free(buf.content);
return FALSE;
}
/*
* "pool-build" command
*/
@ -3391,6 +3584,131 @@ cmdPoolStart(vshControl * ctl, vshCmd * cmd)
}
/*
* "vol-create-as" command
*/
static vshCmdInfo info_vol_create_as[] = {
{"syntax", "create-as <pool> <name> <capacity>"},
{"help", gettext_noop("create a vol from a set of as")},
{"desc", gettext_noop("Create a vol.")},
{NULL, NULL}
};
static vshCmdOptDef opts_vol_create_as[] = {
{"pool", VSH_OT_DATA, VSH_OFLAG_REQ, gettext_noop("pool name")},
{"name", VSH_OT_DATA, VSH_OFLAG_REQ, gettext_noop("name of the vol")},
{"capacity", VSH_OT_DATA, VSH_OFLAG_REQ, gettext_noop("size of the vol with optional k,M,G,T suffix")},
{"allocation", VSH_OT_DATA, 0, gettext_noop("initial allocation size with optional k,M,G,T suffix")},
{"format", VSH_OT_DATA, 0, gettext_noop("file format type raw,bochs,qcow,qcow2,vmdk")},
{NULL, 0, 0, NULL}
};
static int cmdVolSize(const char *data, unsigned long long *val)
{
char *end;
if (virStrToLong_ull(data, &end, 10, val) < 0)
return -1;
if (end && *end) {
/* Delibrate fallthrough cases here :-) */
switch (*end) {
case 'T':
*val *= 1024;
case 'G':
*val *= 1024;
case 'M':
*val *= 1024;
case 'k':
*val *= 1024;
break;
default:
return -1;
}
end++;
if (*end)
return -1;
}
return 0;
}
static int
cmdVolCreateAs(vshControl * ctl, vshCmd * cmd)
{
virStoragePoolPtr pool;
virStorageVolPtr vol;
int found;
char *name, *capacityStr, *allocationStr, *format;
unsigned long long capacity, allocation = 0;
virBuffer buf;
memset(&buf, 0, sizeof(buf));
if (!vshConnectionUsability(ctl, ctl->conn, TRUE))
return FALSE;
if (!(pool = vshCommandOptPoolBy(ctl, cmd, "pool", NULL,
VSH_BYNAME)))
return FALSE;
name = vshCommandOptString(cmd, "name", &found);
if (!found)
goto cleanup;
capacityStr = vshCommandOptString(cmd, "capacity", &found);
if (!found)
goto cleanup;
if (cmdVolSize(capacityStr, &capacity) < 0)
vshError(ctl, FALSE, _("Malformed size %s"), capacityStr);
allocationStr = vshCommandOptString(cmd, "allocation", &found);
if (allocationStr &&
cmdVolSize(allocationStr, &allocation) < 0)
vshError(ctl, FALSE, _("Malformed size %s"), allocationStr);
format = vshCommandOptString(cmd, "format", &found);
if (virBufferAddLit(&buf, "<volume>\n") < 0)
goto cleanup;
if (virBufferVSprintf(&buf, " <name>%s</name>\n", name) < 0)
goto cleanup;
if (virBufferVSprintf(&buf, " <capacity>%llu</capacity>\n", capacity) < 0)
goto cleanup;
if (allocationStr &&
virBufferVSprintf(&buf, " <allocation>%llu</allocation>\n", allocation) < 0)
goto cleanup;
if (format) {
if (virBufferAddLit(&buf, " <target>\n") < 0)
goto cleanup;
if (format)
if (virBufferVSprintf(&buf, " <format type='%s'/>\n",format) < 0)
goto cleanup;
if (virBufferAddLit(&buf, " </target>\n") < 0)
goto cleanup;
}
if (virBufferAddLit(&buf, "</volume>\n") < 0)
goto cleanup;
vol = virStorageVolCreateXML(pool, buf.content, 0);
free (buf.content);
virStoragePoolFree(pool);
if (vol != NULL) {
vshPrint(ctl, _("Vol %s created\n"), name);
virStorageVolFree(vol);
return TRUE;
} else {
vshError(ctl, FALSE, _("Failed to create vol %s"), name);
return FALSE;
}
cleanup:
free(buf.content);
virStoragePoolFree(pool);
return FALSE;
}
/*
* "pool-undefine" command
*/
@ -4802,7 +5120,9 @@ static vshCmdDef commands[] = {
{"pool-autostart", cmdPoolAutostart, opts_pool_autostart, info_pool_autostart},
{"pool-build", cmdPoolBuild, opts_pool_build, info_pool_build},
{"pool-create", cmdPoolCreate, opts_pool_create, info_pool_create},
{"pool-create-as", cmdPoolCreateAs, opts_pool_create_as, info_pool_create_as},
{"pool-define", cmdPoolDefine, opts_pool_define, info_pool_define},
{"pool-define-as", cmdPoolDefineAs, opts_pool_define_as, info_pool_define_as},
{"pool-destroy", cmdPoolDestroy, opts_pool_destroy, info_pool_destroy},
{"pool-delete", cmdPoolDelete, opts_pool_delete, info_pool_delete},
{"pool-dumpxml", cmdPoolDumpXML, opts_pool_dumpxml, info_pool_dumpxml},
@ -4831,6 +5151,7 @@ static vshCmdDef commands[] = {
{"uri", cmdURI, NULL, info_uri},
{"vol-create", cmdVolCreate, opts_vol_create, info_vol_create},
{"vol-create-as", cmdVolCreateAs, opts_vol_create_as, info_vol_create_as},
{"vol-delete", cmdVolDelete, opts_vol_delete, info_vol_delete},
{"vol-dumpxml", cmdVolDumpXML, opts_vol_dumpxml, info_vol_dumpxml},
{"vol-info", cmdVolInfo, opts_vol_info, info_vol_info},
@ -5071,6 +5392,32 @@ vshCommandOptString(vshCmd * cmd, const char *name, int *found)
return arg && arg->data && *arg->data ? arg->data : NULL;
}
#if 0
static int
vshCommandOptStringList(vshCmd * cmd, const char *name, char ***data)
{
vshCmdOpt *arg = cmd->opts;
char **val = NULL;
int nval = 0;
while (arg) {
if (arg->def && STREQ(arg->def->name, name)) {
char **tmp = realloc(val, sizeof(*tmp) * (nval+1));
if (!tmp) {
free(val);
return -1;
}
val = tmp;
val[nval++] = arg->data;
}
arg = arg->next;
}
*data = val;
return nval;
}
#endif
/*
* Returns TRUE/FALSE if the option exists
*/

20
src/xend_internal.c
View File

@ -1440,7 +1440,7 @@ xend_parse_sexp_desc(virConnectPtr conn, struct sexpr *root,
virBufferVSprintf(&buf, " <bootloader>%s</bootloader>\n", tmp);
} else if (sexpr_has(root, "domain/bootloader")) {
bootloader = 1;
virBufferVSprintf(&buf, " <bootloader/>\n");
virBufferAddLit(&buf, " <bootloader/>\n");
}
tmp = sexpr_node(root, "domain/bootloader_args");
if (tmp != NULL && bootloader) {
@ -1464,12 +1464,12 @@ xend_parse_sexp_desc(virConnectPtr conn, struct sexpr *root,
max_mem = cur_mem;
virBufferVSprintf(&buf, " <memory>%d</memory>\n", max_mem);
if ((cur_mem >= MIN_XEN_GUEST_SIZE) && (cur_mem != max_mem))
virBufferVSprintf(&buf, " <currentMemory>%d</currentMemory>\n",
cur_mem);
virBufferVSprintf(&buf, " <currentMemory>%d</currentMemory>\n",
cur_mem);
virBufferVSprintf(&buf, " <vcpu");
virBufferAddLit(&buf, " <vcpu");
if (cpus != NULL) {
virBufferVSprintf(&buf, " cpuset='%s'", cpus);
virBufferVSprintf(&buf, " cpuset='%s'", cpus);
}
virBufferVSprintf(&buf, ">%d</vcpu>\n",
sexpr_int(root, "domain/vcpus"));
@ -1646,7 +1646,7 @@ xend_parse_sexp_desc(virConnectPtr conn, struct sexpr *root,
}
} else {
/* This case is the cdrom device only */
virBufferVSprintf(&buf, " <disk device='cdrom'>\n");
virBufferAddLit(&buf, " <disk device='cdrom'>\n");
}
virBufferVSprintf(&buf, " <target dev='%s'/>\n", dst);
@ -1654,9 +1654,9 @@ xend_parse_sexp_desc(virConnectPtr conn, struct sexpr *root,
/* XXX should we force mode == r, if cdrom==1, or assume
xend has already done this ? */
if ((mode != NULL) && (!strcmp(mode, "r")))
virBufferVSprintf(&buf, " <readonly/>\n");
virBufferAddLit(&buf, " <readonly/>\n");
else if ((mode != NULL) && (!strcmp(mode, "w!")))
virBufferVSprintf(&buf, " <shareable/>\n");
virBufferAddLit(&buf, " <shareable/>\n");
virBufferAddLit(&buf, " </disk>\n");
bad_parse:
@ -1667,12 +1667,12 @@ xend_parse_sexp_desc(virConnectPtr conn, struct sexpr *root,
tmp2 = sexpr_node(node, "device/vif/script");
tmp = sexpr_node(node, "device/vif/bridge");
if ((tmp2 && strstr(tmp2, "bridge")) || tmp) {
virBufferVSprintf(&buf, " <interface type='bridge'>\n");
virBufferAddLit(&buf, " <interface type='bridge'>\n");
if (tmp != NULL)
virBufferVSprintf(&buf, " <source bridge='%s'/>\n",
tmp);
} else {
virBufferVSprintf(&buf, " <interface type='ethernet'>\n");
virBufferAddLit(&buf, " <interface type='ethernet'>\n");
}
tmp = sexpr_node(node, "device/vif/vifname");

2
src/xm_internal.c
View File

@ -667,7 +667,7 @@ char *xenXMDomainFormatXML(virConnectPtr conn, virConfPtr conf) {
val = MIN_XEN_GUEST_SIZE * 2;
virBufferVSprintf(buf, " <memory>%ld</memory>\n", val * 1024);
virBufferVSprintf(buf, " <vcpu");
virBufferAddLit(buf, " <vcpu");
if (xenXMConfigGetString(conf, "cpus", &str) == 0) {
char *ranges;

8
src/xml.c
View File

@ -1298,11 +1298,11 @@ virDomainParseXMLDiskDesc(virConnectPtr conn, xmlNodePtr node,
}
}
if (ro == 1)
virBufferVSprintf(buf, "(mode 'r')");
virBufferAddLit(buf, "(mode 'r')");
else if (shareable == 1)
virBufferVSprintf(buf, "(mode 'w!')");
virBufferAddLit(buf, "(mode 'w!')");
else
virBufferVSprintf(buf, "(mode 'w')");
virBufferAddLit(buf, "(mode 'w')");
virBufferAddLit(buf, ")");
virBufferAddLit(buf, ")");
@ -1617,7 +1617,7 @@ virDomainParseXMLDesc(virConnectPtr conn, const char *xmldesc, char **name,
free(str);
} else if (virXPathNumber("count(/domain/bootloader)", ctxt, &f) == 0
&& (f > 0)) {
virBufferVSprintf(&buf, "(bootloader)");
virBufferAddLit(&buf, "(bootloader)");
/*
* if using a bootloader, the kernel and initrd strings are not
* significant and should be discarded