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Split code for building QEMU -drive arg in separate method
To enable it to be called from multiple locations, split out the code for building the -drive arg string. This will be needed by later patches which do drive hotplug, the conversion to use -device, and the conversion to controller/bus/unit addressing * src/qemu/qemu_conf.c, src/qemu/qemu_conf.h: Add qemuBuildDriveStr for building -drive arg string
This commit is contained in:
Daniel P. Berrange
parent
ab0da52b43
commit
2982d73a11
@ -1523,6 +1523,104 @@ qemuAssignNetNames(virDomainDefPtr def,
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return 0;
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}
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#define QEMU_SERIAL_PARAM_ACCEPTED_CHARS \
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"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_"
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static int
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qemuSafeSerialParamValue(virConnectPtr conn,
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const char *value)
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{
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if (strspn(value, QEMU_SERIAL_PARAM_ACCEPTED_CHARS) != strlen (value)) {
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qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
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_("driver serial '%s' contains unsafe characters"),
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value);
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return -1;
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}
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return 0;
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}
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char *
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qemuBuildDriveStr(virDomainDiskDefPtr disk,
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int bootable,
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int qemuCmdFlags)
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{
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virBuffer opt = VIR_BUFFER_INITIALIZER;
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const char *bus = virDomainDiskQEMUBusTypeToString(disk->bus);
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int idx = virDiskNameToIndex(disk->dst);
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if (idx < 0) {
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qemudReportError(NULL, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
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_("unsupported disk type '%s'"), disk->dst);
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goto error;
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}
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if (disk->src) {
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if (disk->type == VIR_DOMAIN_DISK_TYPE_DIR) {
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/* QEMU only supports magic FAT format for now */
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if (disk->driverType &&
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STRNEQ(disk->driverType, "fat")) {
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qemudReportError(NULL, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
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_("unsupported disk driver type for '%s'"),
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disk->driverType);
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goto error;
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}
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if (!disk->readonly) {
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qemudReportError(NULL, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "%s",
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_("cannot create virtual FAT disks in read-write mode"));
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goto error;
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}
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if (disk->device == VIR_DOMAIN_DISK_DEVICE_FLOPPY)
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virBufferVSprintf(&opt, "file=fat:floppy:%s,", disk->src);
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else
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virBufferVSprintf(&opt, "file=fat:%s,", disk->src);
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} else {
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virBufferVSprintf(&opt, "file=%s,", disk->src);
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}
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}
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virBufferVSprintf(&opt, "if=%s", bus);
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if (disk->device == VIR_DOMAIN_DISK_DEVICE_CDROM)
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virBufferAddLit(&opt, ",media=cdrom");
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virBufferVSprintf(&opt, ",index=%d", idx);
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if (bootable &&
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disk->device == VIR_DOMAIN_DISK_DEVICE_DISK)
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virBufferAddLit(&opt, ",boot=on");
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if (disk->driverType &&
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disk->type != VIR_DOMAIN_DISK_TYPE_DIR &&
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qemuCmdFlags & QEMUD_CMD_FLAG_DRIVE_FORMAT)
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virBufferVSprintf(&opt, ",format=%s", disk->driverType);
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if (disk->serial &&
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(qemuCmdFlags & QEMUD_CMD_FLAG_DRIVE_SERIAL)) {
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if (qemuSafeSerialParamValue(NULL, disk->serial) < 0)
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goto error;
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virBufferVSprintf(&opt, ",serial=%s", disk->serial);
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}
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if (disk->cachemode) {
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const char *mode =
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(qemuCmdFlags & QEMUD_CMD_FLAG_DRIVE_CACHE_V2) ?
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qemuDiskCacheV2TypeToString(disk->cachemode) :
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qemuDiskCacheV1TypeToString(disk->cachemode);
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virBufferVSprintf(&opt, ",cache=%s", mode);
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} else if (disk->shared && !disk->readonly) {
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virBufferAddLit(&opt, ",cache=off");
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}
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if (virBufferError(&opt)) {
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virReportOOMError(NULL);
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goto error;
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}
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return virBufferContentAndReset(&opt);
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error:
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virBufferFreeAndReset(&opt);
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return NULL;
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}
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int
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qemuBuildNicStr(virConnectPtr conn,
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virDomainNetDefPtr net,
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@ -1866,23 +1964,6 @@ no_memory:
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}
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#define QEMU_SERIAL_PARAM_ACCEPTED_CHARS \
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"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_"
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static int
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qemuSafeSerialParamValue(virConnectPtr conn,
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const char *value)
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{
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if (strspn(value, QEMU_SERIAL_PARAM_ACCEPTED_CHARS) != strlen (value)) {
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qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
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_("driver serial '%s' contains unsafe characters"),
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value);
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return -1;
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}
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return 0;
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}
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/*
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* Constructs a argv suitable for launching qemu with config defined
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* for a given virtual machine.
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@ -2274,12 +2355,9 @@ int qemudBuildCommandLine(virConnectPtr conn,
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}
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for (i = 0 ; i < def->ndisks ; i++) {
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virBuffer opt = VIR_BUFFER_INITIALIZER;
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char *optstr;
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int bootable = 0;
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virDomainDiskDefPtr disk = def->disks[i];
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int idx = virDiskNameToIndex(disk->dst);
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const char *bus = virDomainDiskQEMUBusTypeToString(disk->bus);
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if (disk->bus == VIR_DOMAIN_DISK_BUS_USB) {
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if (disk->device == VIR_DOMAIN_DISK_DEVICE_DISK) {
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@ -2292,14 +2370,6 @@ int qemudBuildCommandLine(virConnectPtr conn,
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continue;
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}
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ADD_ARG_SPACE;
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if (idx < 0) {
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qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
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_("unsupported disk type '%s'"), disk->dst);
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goto error;
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}
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switch (disk->device) {
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case VIR_DOMAIN_DISK_DEVICE_CDROM:
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bootable = bootCD;
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@ -2315,69 +2385,10 @@ int qemudBuildCommandLine(virConnectPtr conn,
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break;
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}
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if (disk->src) {
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if (disk->type == VIR_DOMAIN_DISK_TYPE_DIR) {
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/* QEMU only supports magic FAT format for now */
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if (disk->driverType &&
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STRNEQ(disk->driverType, "fat")) {
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qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
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_("unsupported disk driver type for '%s'"),
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disk->driverType);
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goto error;
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}
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if (!disk->readonly) {
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qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, "%s",
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_("cannot create virtual FAT disks in read-write mode"));
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goto error;
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}
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if (disk->device == VIR_DOMAIN_DISK_DEVICE_FLOPPY)
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virBufferVSprintf(&opt, "file=fat:floppy:%s,", disk->src);
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else
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virBufferVSprintf(&opt, "file=fat:%s,", disk->src);
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} else {
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virBufferVSprintf(&opt, "file=%s,", disk->src);
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}
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}
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virBufferVSprintf(&opt, "if=%s", bus);
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if (disk->device == VIR_DOMAIN_DISK_DEVICE_CDROM)
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virBufferAddLit(&opt, ",media=cdrom");
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virBufferVSprintf(&opt, ",index=%d", idx);
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if (bootable &&
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disk->device == VIR_DOMAIN_DISK_DEVICE_DISK)
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virBufferAddLit(&opt, ",boot=on");
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if (disk->driverType &&
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disk->type != VIR_DOMAIN_DISK_TYPE_DIR &&
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qemuCmdFlags & QEMUD_CMD_FLAG_DRIVE_FORMAT)
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virBufferVSprintf(&opt, ",format=%s", disk->driverType);
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if (disk->serial &&
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(qemuCmdFlags & QEMUD_CMD_FLAG_DRIVE_SERIAL)) {
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if (qemuSafeSerialParamValue(conn, disk->serial) < 0)
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goto error;
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virBufferVSprintf(&opt, ",serial=%s", disk->serial);
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}
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ADD_ARG_LIT("-drive");
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if (disk->cachemode) {
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const char *mode =
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(qemuCmdFlags & QEMUD_CMD_FLAG_DRIVE_CACHE_V2) ?
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qemuDiskCacheV2TypeToString(disk->cachemode) :
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qemuDiskCacheV1TypeToString(disk->cachemode);
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virBufferVSprintf(&opt, ",cache=%s", mode);
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} else if (disk->shared && !disk->readonly) {
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virBufferAddLit(&opt, ",cache=off");
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}
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if (virBufferError(&opt)) {
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virBufferFreeAndReset(&opt);
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goto no_memory;
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}
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optstr = virBufferContentAndReset(&opt);
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if ((qargv[qargc++] = strdup("-drive")) == NULL) {
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VIR_FREE(optstr);
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goto no_memory;
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}
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if (!(optstr = qemuBuildDriveStr(disk, bootable, qemuCmdFlags)))
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goto error;
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ADD_ARG(optstr);
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}
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} else {
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@ -193,6 +193,11 @@ int qemuBuildNicStr (virConnectPtr conn,
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int vlan,
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char **str);
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char * qemuBuildDriveStr (virDomainDiskDefPtr disk,
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int bootable,
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int qemuCmdFlags);
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int qemudNetworkIfaceConnect (virConnectPtr conn,
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struct qemud_driver *driver,
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virDomainNetDefPtr net,
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