[PATCH 04/10] ch_monitor: Add pty json builder function

[William Douglas <william.douglas@xxxxxxxxx>]

Add function to build the the json structure to configure a PTY in
cloud-hypervisor. The configuration only supports a single serial or
console device.

Signed-off-by: William Douglas <william.douglas@xxxxxxxxx>
---
 src/ch/ch_monitor.c | 59 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 59 insertions(+)

diff --git a/src/ch/ch_monitor.c b/src/ch/ch_monitor.c
index 5e7d6e3189..d4289b75ce 100644
--- a/src/ch/ch_monitor.c
+++ b/src/ch/ch_monitor.c
@@ -89,6 +89,65 @@ virCHMonitorBuildCPUJson(virJSONValue *content, virDomainDef *vmdef)
     return -1;
 }
 
+static int
+virCHMonitorBuildPTYJson(virJSONValue *content, virDomainDef *vmdef)
+{
+    virJSONValue *ptyc = virJSONValueNewObject();
+    virJSONValue *ptys = virJSONValueNewObject();
+
+    if (vmdef->nconsoles || vmdef->nserials) {
+        if ((vmdef->nconsoles &&
+             vmdef->consoles[0]->source->type == VIR_DOMAIN_CHR_TYPE_PTY)
+            && (vmdef->nserials &&
+                vmdef->serials[0]->source->type == VIR_DOMAIN_CHR_TYPE_PTY)) {
+            virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+                           _("Only a single console or serial can be configured for this domain"));
+            goto cleanup;
+        } else if (vmdef->nconsoles > 1) {
+            virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+                           _("Only a single console can be configured for this domain"));
+            goto cleanup;
+        } else if (vmdef->nserials > 1) {
+            virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+                           _("Only a single serial can be configured for this domain"));
+            goto cleanup;
+        }
+    }
+
+    if (vmdef->nconsoles) {
+        if (vmdef->consoles[0]->source->type == VIR_DOMAIN_CHR_TYPE_PTY) {
+            if (virJSONValueObjectAppendString(ptyc, "mode", "Pty") < 0)
+                goto cleanup;
+            if (virJSONValueObjectAppend(content, "console", &ptyc) < 0)
+                goto cleanup;
+        } else {
+            virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+                           _("Console can only be enabled for a PTY"));
+            goto cleanup;
+        }
+    }
+
+    if (vmdef->nserials) {
+        if (vmdef->serials[0]->source->type == VIR_DOMAIN_CHR_TYPE_PTY) {
+            if (virJSONValueObjectAppendString(ptys, "mode", "Pty") < 0)
+                goto cleanup;
+            if (virJSONValueObjectAppend(content, "serial", &ptys) < 0)
+                goto cleanup;
+        } else {
+            virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+                           _("Serial can only be enabled for a PTY"));
+            goto cleanup;
+        }
+    }
+
+    return 0;
+
+ cleanup:
+    virJSONValueFree(ptyc);
+    virJSONValueFree(ptys);
+    return -1;
+}
+
 static int
 virCHMonitorBuildKernelRelatedJson(virJSONValue *content, virDomainDef *vmdef)
 {
-- 
2.31.1