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qemu: Split out NBD command generation

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This commit is contained in:
Peter Krempa 2013-11-18 18:02:30 +01:00
parent eaa1539b2f
commit d94fd0c9c2
1 changed files with 61 additions and 56 deletions
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117
src/qemu/qemu_command.c
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@ -3680,7 +3680,7 @@ qemuNetworkDriveGetPort(int protocol,
return -1;
}
#define QEMU_DEFAULT_NBD_PORT "10809"
char *
qemuBuildNetworkDriveURI(int protocol,
@ -3691,9 +3691,67 @@ qemuBuildNetworkDriveURI(int protocol,
const char *secret)
{
char *ret = NULL;
virBuffer buf = VIR_BUFFER_INITIALIZER;
virURIPtr uri = NULL;
switch ((enum virDomainDiskProtocol) protocol) {
case VIR_DOMAIN_DISK_PROTOCOL_NBD:
if (nhosts != 1) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("protocol '%s' accepts only one host"),
virDomainDiskProtocolTypeToString(protocol));
goto cleanup;
}
if (!((hosts->name && strchr(hosts->name, ':')) ||
(hosts->transport == VIR_DOMAIN_DISK_PROTO_TRANS_TCP &&
!hosts->name) ||
(hosts->transport == VIR_DOMAIN_DISK_PROTO_TRANS_UNIX &&
hosts->socket &&
hosts->socket[0] != '/'))) {
virBufferAddLit(&buf, "nbd:");
switch (hosts->transport) {
case VIR_DOMAIN_DISK_PROTO_TRANS_TCP:
virBufferStrcat(&buf, hosts->name, NULL);
virBufferAsprintf(&buf, ":%s",
hosts->port ? hosts->port :
QEMU_DEFAULT_NBD_PORT);
break;
case VIR_DOMAIN_DISK_PROTO_TRANS_UNIX:
if (!hosts->socket) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("socket attribute required for "
"unix transport"));
goto cleanup;
}
virBufferAsprintf(&buf, "unix:%s", hosts->socket);
break;
default:
virReportError(VIR_ERR_INTERNAL_ERROR,
_("nbd does not support transport '%s'"),
virDomainDiskProtocolTransportTypeToString(hosts->transport));
goto cleanup;
}
if (src)
virBufferAsprintf(&buf, ":exportname=%s", src);
if (virBufferError(&buf) < 0) {
virReportOOMError();
goto cleanup;
}
ret = virBufferContentAndReset(&buf);
goto cleanup;
}
/* fallthrough */
/* NBD code uses same formatting scheme as others in some cases */
case VIR_DOMAIN_DISK_PROTOCOL_HTTP:
case VIR_DOMAIN_DISK_PROTOCOL_HTTPS:
case VIR_DOMAIN_DISK_PROTOCOL_FTP:
@ -3701,7 +3759,6 @@ qemuBuildNetworkDriveURI(int protocol,
case VIR_DOMAIN_DISK_PROTOCOL_TFTP:
case VIR_DOMAIN_DISK_PROTOCOL_ISCSI:
case VIR_DOMAIN_DISK_PROTOCOL_GLUSTER:
case VIR_DOMAIN_DISK_PROTOCOL_NBD:
if (nhosts != 1) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("protocol '%s' accepts only one host"),
@ -3786,6 +3843,7 @@ qemuBuildNetworkDriveURI(int protocol,
}
cleanup:
virBufferFreeAndReset(&buf);
virURIFree(uri);
return ret;
@ -3839,56 +3897,6 @@ cleanup:
}
#define QEMU_DEFAULT_NBD_PORT "10809"
static int
qemuBuildNBDString(virConnectPtr conn, virDomainDiskDefPtr disk, virBufferPtr opt)
{
const char *transp;
if (disk->nhosts != 1) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("nbd accepts only one host"));
return -1;
}
if ((disk->hosts->name && strchr(disk->hosts->name, ':')) ||
(disk->hosts->transport == VIR_DOMAIN_DISK_PROTO_TRANS_TCP && !disk->hosts->name) ||
(disk->hosts->transport == VIR_DOMAIN_DISK_PROTO_TRANS_UNIX && disk->hosts->socket && disk->hosts->socket[0] != '/'))
return qemuBuildDriveURIString(conn, disk, opt);
virBufferAddLit(opt, "file=nbd:");
switch (disk->hosts->transport) {
case VIR_DOMAIN_DISK_PROTO_TRANS_TCP:
if (disk->hosts->name)
virBufferEscape(opt, ',', ",", "%s", disk->hosts->name);
virBufferEscape(opt, ',', ",", ":%s",
disk->hosts->port ? disk->hosts->port :
QEMU_DEFAULT_NBD_PORT);
break;
case VIR_DOMAIN_DISK_PROTO_TRANS_UNIX:
if (!disk->hosts->socket) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("socket attribute required for unix transport"));
return -1;
}
virBufferEscape(opt, ',', ",", "unix:%s", disk->hosts->socket);
break;
default:
transp = virDomainDiskProtocolTransportTypeToString(disk->hosts->transport);
virReportError(VIR_ERR_INTERNAL_ERROR,
_("nbd does not support transport '%s'"), transp);
break;
}
if (disk->src)
virBufferEscape(opt, ',', ",", ":exportname=%s", disk->src);
virBufferAddChar(opt, ',');
return 0;
}
char *
@ -4013,10 +4021,6 @@ qemuBuildDriveStr(virConnectPtr conn ATTRIBUTE_UNUSED,
virBufferEscape(&opt, ',', ",", "file=fat:%s,", disk->src);
} else if (actualType == VIR_DOMAIN_DISK_TYPE_NETWORK) {
switch (disk->protocol) {
case VIR_DOMAIN_DISK_PROTOCOL_NBD:
if (qemuBuildNBDString(conn, disk, &opt) < 0)
goto error;
break;
case VIR_DOMAIN_DISK_PROTOCOL_RBD:
virBufferAddLit(&opt, "file=");
if (qemuBuildRBDString(conn, disk, &opt) < 0)
@ -4024,6 +4028,7 @@ qemuBuildDriveStr(virConnectPtr conn ATTRIBUTE_UNUSED,
virBufferAddChar(&opt, ',');
break;
case VIR_DOMAIN_DISK_PROTOCOL_NBD:
case VIR_DOMAIN_DISK_PROTOCOL_SHEEPDOG:
case VIR_DOMAIN_DISK_PROTOCOL_TFTP:
case VIR_DOMAIN_DISK_PROTOCOL_FTPS: