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qemuBuildVHostUserFsCommandLine: Generate via JSON

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The 'vhost-user-fs-pci' has following properties we control:
  chardev=<str>          - ID of a chardev to use as a backend
  queue-size=<uint16>    -  (default: 128)
  tag=<str>
  bootindex=<int32>

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Peter Krempa 2021-10-05 16:23:19 +02:00
parent cb1721767b
commit 7ef62d7d57
2 changed files with 27 additions and 28 deletions
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45
src/qemu/qemu_command.c
View File

@ -2579,31 +2579,30 @@ qemuBuildVHostUserFsChardevStr(const virDomainFSDef *fs,
}
char *
qemuBuildVHostUserFsDevStr(virDomainFSDef *fs,
const virDomainDef *def,
const char *chardev_alias,
qemuDomainObjPrivate *priv)
virJSONValue *
qemuBuildVHostUserFsDevProps(virDomainFSDef *fs,
const virDomainDef *def,
const char *chardev_alias,
qemuDomainObjPrivate *priv)
{
g_auto(virBuffer) buf = VIR_BUFFER_INITIALIZER;
g_autoptr(virJSONValue) props = NULL;
if (qemuBuildVirtioDevStr(&buf, priv->qemuCaps, VIR_DOMAIN_DEVICE_FS, fs) < 0)
if (!(props = qemuBuildVirtioDevProps(VIR_DOMAIN_DEVICE_FS, fs, priv->qemuCaps)))
return NULL;
virBufferAsprintf(&buf, ",id=%s", fs->info.alias);
virBufferAsprintf(&buf, ",chardev=%s", chardev_alias);
if (fs->queue_size)
virBufferAsprintf(&buf, ",queue-size=%llu", fs->queue_size);
virBufferAddLit(&buf, ",tag=");
virQEMUBuildBufferEscapeComma(&buf, fs->dst);
if (fs->info.bootIndex)
virBufferAsprintf(&buf, ",bootindex=%u", fs->info.bootIndex);
if (qemuBuildDeviceAddressStr(&buf, def, &fs->info) < 0)
if (virJSONValueObjectAdd(props,
"s:id", fs->info.alias,
"s:chardev", chardev_alias,
"P:queue-size", fs->queue_size,
"s:tag", fs->dst,
"p:bootindex", fs->info.bootIndex,
NULL) < 0)
return NULL;
return virBufferContentAndReset(&buf);
if (qemuBuildDeviceAddressProps(props, def, &fs->info) < 0)
return NULL;
return g_steal_pointer(&props);
}
@ -2615,7 +2614,7 @@ qemuBuildVHostUserFsCommandLine(virCommand *cmd,
{
g_autofree char *chardev_alias = NULL;
g_autofree char *chrdevstr = NULL;
g_autofree char *devstr = NULL;
g_autoptr(virJSONValue) devprops = NULL;
chardev_alias = qemuDomainGetVhostUserChrAlias(fs->info.alias);
chrdevstr = qemuBuildVHostUserFsChardevStr(fs, chardev_alias, priv);
@ -2626,11 +2625,11 @@ qemuBuildVHostUserFsCommandLine(virCommand *cmd,
if (qemuCommandAddExtDevice(cmd, &fs->info, priv->qemuCaps) < 0)
return -1;
if (!(devstr = qemuBuildVHostUserFsDevStr(fs, def, chardev_alias, priv)))
if (!(devprops = qemuBuildVHostUserFsDevProps(fs, def, chardev_alias, priv)))
return -1;
virCommandAddArg(cmd, "-device");
virCommandAddArg(cmd, devstr);
if (qemuBuildDeviceCommandlineFromJSON(cmd, devprops, priv->qemuCaps) < 0)
return -1;
return 0;
}

10
src/qemu/qemu_command.h
View File

@ -138,11 +138,11 @@ qemuBuildDiskDeviceProps(const virDomainDef *def,
virDomainDiskDef *disk,
virQEMUCaps *qemuCaps);
char *
qemuBuildVHostUserFsDevStr(virDomainFSDef *fs,
const virDomainDef *def,
const char *chardev_alias,
qemuDomainObjPrivate *priv);
virJSONValue *
qemuBuildVHostUserFsDevProps(virDomainFSDef *fs,
const virDomainDef *def,
const char *chardev_alias,
qemuDomainObjPrivate *priv);
/* Current, best practice */
int