[libvirt] [PATCH] bhyve: add console support through nmdm device
Roman Bogorodskiy
bogorodskiy at gmail.com
Sat Mar 15 12:30:01 UTC 2014
nmdm is a FreeBSD driver which allows to create a pair of tty
devices one of which is passed to the guest and second is used
by the client.
This patch adds new 'nmdm' character device type and implements
domainOpenConsole() for bhyve driver based on that.
---
src/bhyve/bhyve_command.c | 34 ++++++++++++++++++++++
src/bhyve/bhyve_driver.c | 69 ++++++++++++++++++++++++++++++++++++++++++++
src/conf/domain_audit.c | 1 +
src/conf/domain_conf.c | 12 +++++++-
src/conf/domain_conf.h | 1 +
src/qemu/qemu_monitor_json.c | 1 +
6 files changed, 117 insertions(+), 1 deletion(-)
diff --git a/src/bhyve/bhyve_command.c b/src/bhyve/bhyve_command.c
index a19daac..b9df6d0 100644
--- a/src/bhyve/bhyve_command.c
+++ b/src/bhyve/bhyve_command.c
@@ -181,6 +181,38 @@ bhyveBuildNetArgStr(const virDomainDef *def, virCommandPtr cmd)
}
static int
+bhyveBuildConsoleArgStr(const virDomainDef *def, virCommandPtr cmd)
+{
+
+ virDomainChrDefPtr chr = NULL;
+
+ if (!def->nserials)
+ return 0;
+
+ chr = def->serials[0];
+
+ if (chr->source.type != VIR_DOMAIN_CHR_TYPE_NMDM) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+ _("only nmdm console types are supported"));
+ return -1;
+ }
+
+ /* bhyve supports only two ports: com1 and com2 */
+ if (chr->target.port > 2) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+ _("only two serial ports are supported"));
+ return -1;
+ }
+
+ virCommandAddArgList(cmd, "-s", "31,lpc", NULL);
+ virCommandAddArg(cmd, "-l");
+ virCommandAddArgFormat(cmd, "com%d,%s",
+ chr->target.port + 1, chr->source.data.file.path);
+
+ return 0;
+}
+
+static int
bhyveBuildDiskArgStr(const virDomainDef *def, virCommandPtr cmd)
{
virDomainDiskDefPtr disk;
@@ -265,6 +297,8 @@ virBhyveProcessBuildBhyveCmd(bhyveConnPtr driver ATTRIBUTE_UNUSED,
goto error;
if (bhyveBuildDiskArgStr(vm->def, cmd) < 0)
goto error;
+ if (bhyveBuildConsoleArgStr(vm->def, cmd) < 0)
+ goto error;
virCommandAddArg(cmd, vm->def->name);
return cmd;
diff --git a/src/bhyve/bhyve_driver.c b/src/bhyve/bhyve_driver.c
index 9dbb299..4a564d1 100644
--- a/src/bhyve/bhyve_driver.c
+++ b/src/bhyve/bhyve_driver.c
@@ -22,6 +22,7 @@
#include <config.h>
+#include <fcntl.h>
#include <sys/utsname.h>
#include "virerror.h"
@@ -575,6 +576,73 @@ cleanup:
}
static int
+bhyveDomainOpenConsole(virDomainPtr dom,
+ const char *dev_name ATTRIBUTE_UNUSED,
+ virStreamPtr st,
+ unsigned int flags)
+{
+ virDomainObjPtr vm = NULL;
+ virDomainChrDefPtr chr = NULL;
+ char *console_path;
+ char c;
+ int ret = -1;
+
+ virCheckFlags(0, -1);
+
+ if (!(vm = bhyveDomObjFromDomain(dom)))
+ goto cleanup;
+
+ if (virDomainOpenConsoleEnsureACL(dom->conn, vm->def) < 0)
+ goto cleanup;
+
+ if (!virDomainObjIsActive(vm)) {
+ virReportError(VIR_ERR_OPERATION_INVALID,
+ "%s", _("domain is not running"));
+ goto cleanup;
+ }
+
+ if (!vm->def->nserials) {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ "%s", _("no console devices available"));
+ goto cleanup;
+ }
+
+ chr = vm->def->serials[0];
+
+ if (VIR_STRDUP(console_path, chr->source.data.file.path) < 0)
+ goto cleanup;
+
+ /* nmdm(4) uses the device pair with naming schema like that:
+ *
+ * nmdm0A, nmdm0B
+ *
+ * So if domain uses nmdm0A, we have to open nmdm0B and vice versa.
+ */
+ c = chr->source.data.file.path[strlen(chr->source.data.file.path) - 1];
+ if (c == 'A')
+ console_path[strlen(console_path) - 1] = 'B';
+ else if (c == 'B')
+ console_path[strlen(console_path) - 1] = 'A';
+ else {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("invalid name for nmdm device: %s"),
+ chr->source.data.file.path);
+ goto cleanup;
+ }
+
+ if (virFDStreamOpenPTY(st, console_path,
+ 0, 0, O_RDWR) < 0)
+ goto cleanup;
+
+ ret = 0;
+
+cleanup:
+ virObjectUnlock(vm);
+ VIR_FREE(console_path);
+ return ret;
+}
+
+static int
bhyveNodeGetCPUStats(virConnectPtr conn,
int cpuNum,
virNodeCPUStatsPtr params,
@@ -701,6 +769,7 @@ static virDriver bhyveDriver = {
.domainGetXMLDesc = bhyveDomainGetXMLDesc, /* 1.2.2 */
.domainIsActive = bhyveDomainIsActive, /* 1.2.2 */
.domainIsPersistent = bhyveDomainIsPersistent, /* 1.2.2 */
+ .domainOpenConsole = bhyveDomainOpenConsole, /* 1.2.3 */
.nodeGetCPUStats = bhyveNodeGetCPUStats, /* 1.2.2 */
.nodeGetMemoryStats = bhyveNodeGetMemoryStats, /* 1.2.2 */
};
diff --git a/src/conf/domain_audit.c b/src/conf/domain_audit.c
index b6564c2..461af11 100644
--- a/src/conf/domain_audit.c
+++ b/src/conf/domain_audit.c
@@ -70,6 +70,7 @@ virDomainAuditChardevPath(virDomainChrSourceDefPtr chr)
case VIR_DOMAIN_CHR_TYPE_DEV:
case VIR_DOMAIN_CHR_TYPE_FILE:
case VIR_DOMAIN_CHR_TYPE_PIPE:
+ case VIR_DOMAIN_CHR_TYPE_NMDM:
return chr->data.file.path;
case VIR_DOMAIN_CHR_TYPE_UNIX:
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 92b1324..2397a7d 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -440,7 +440,8 @@ VIR_ENUM_IMPL(virDomainChr, VIR_DOMAIN_CHR_TYPE_LAST,
"tcp",
"unix",
"spicevmc",
- "spiceport")
+ "spiceport",
+ "nmdm")
VIR_ENUM_IMPL(virDomainChrTcpProtocol, VIR_DOMAIN_CHR_TCP_PROTOCOL_LAST,
"raw",
@@ -1514,6 +1515,7 @@ virDomainChrSourceDefCopy(virDomainChrSourceDefPtr dest,
case VIR_DOMAIN_CHR_TYPE_DEV:
case VIR_DOMAIN_CHR_TYPE_FILE:
case VIR_DOMAIN_CHR_TYPE_PIPE:
+ case VIR_DOMAIN_CHR_TYPE_NMDM:
if (VIR_STRDUP(dest->data.file.path, src->data.file.path) < 0)
return -1;
break;
@@ -7198,6 +7200,7 @@ virDomainChrSourceDefParseXML(virDomainChrSourceDefPtr def,
case VIR_DOMAIN_CHR_TYPE_FILE:
case VIR_DOMAIN_CHR_TYPE_PIPE:
case VIR_DOMAIN_CHR_TYPE_UNIX:
+ case VIR_DOMAIN_CHR_TYPE_NMDM:
/* PTY path is only parsed from live xml. */
if (!path &&
(def->type != VIR_DOMAIN_CHR_TYPE_PTY ||
@@ -7278,6 +7281,7 @@ virDomainChrSourceDefParseXML(virDomainChrSourceDefPtr def,
case VIR_DOMAIN_CHR_TYPE_DEV:
case VIR_DOMAIN_CHR_TYPE_FILE:
case VIR_DOMAIN_CHR_TYPE_PIPE:
+ case VIR_DOMAIN_CHR_TYPE_NMDM:
if (!path &&
def->type != VIR_DOMAIN_CHR_TYPE_PTY) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
@@ -7458,6 +7462,11 @@ virDomainChrDefNew(void) {
* <target port="1"/>
* </serial>
*
+ * <serial type="nmdm">
+ * <source path="/dev/nmdm0A"/>
+ * <target port="1">
+ * </serial>
+ *
*/
static virDomainChrDefPtr
virDomainChrDefParseXML(xmlXPathContextPtr ctxt,
@@ -15734,6 +15743,7 @@ virDomainChrSourceDefFormat(virBufferPtr buf,
case VIR_DOMAIN_CHR_TYPE_DEV:
case VIR_DOMAIN_CHR_TYPE_FILE:
case VIR_DOMAIN_CHR_TYPE_PIPE:
+ case VIR_DOMAIN_CHR_TYPE_NMDM:
if (def->type != VIR_DOMAIN_CHR_TYPE_PTY ||
(def->data.file.path &&
!(flags & VIR_DOMAIN_XML_INACTIVE))) {
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index 37191a8..8b6081e 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -1107,6 +1107,7 @@ enum virDomainChrType {
VIR_DOMAIN_CHR_TYPE_UNIX,
VIR_DOMAIN_CHR_TYPE_SPICEVMC,
VIR_DOMAIN_CHR_TYPE_SPICEPORT,
+ VIR_DOMAIN_CHR_TYPE_NMDM,
VIR_DOMAIN_CHR_TYPE_LAST
};
diff --git a/src/qemu/qemu_monitor_json.c b/src/qemu/qemu_monitor_json.c
index dbc04f6..bae8ff5 100644
--- a/src/qemu/qemu_monitor_json.c
+++ b/src/qemu/qemu_monitor_json.c
@@ -5325,6 +5325,7 @@ qemuMonitorJSONAttachCharDevCommand(const char *chrID,
case VIR_DOMAIN_CHR_TYPE_SPICEPORT:
case VIR_DOMAIN_CHR_TYPE_PIPE:
case VIR_DOMAIN_CHR_TYPE_STDIO:
+ case VIR_DOMAIN_CHR_TYPE_NMDM:
case VIR_DOMAIN_CHR_TYPE_LAST:
virReportError(VIR_ERR_OPERATION_FAILED,
_("Unsupported char device type '%d'"),
--
1.8.4.2
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