Added detection for non-DMI Linux hypervisors (Xen)

gophernicus.h

@@ -99,6 +99,7 @@
 #include <errno.h>
 #include <pwd.h>
 #include <limits.h>
+#include <ctype.h>
 
 #ifdef HAVE_SENDFILE
 #include <sys/sendfile.h>

platform.c

@@ -152,6 +152,17 @@ void platform(state *st)
 		}
 	}
 
+	/* No DMI? Get possible hypervisor name */
+	if (!*st->server_description && (fp = fopen("/sys/hypervisor/type" , "r"))) {
+		fgets(buf, sizeof(buf), fp);
+		fclose(fp);
+
+		chomp(buf);
+		ucfirst(buf);
+
+		if (*buf) snprintf(st->server_description, sizeof(st->server_description), "%s virtual machine", buf);
+	}
+
 	/* Identify Gentoo */
 	if (!*sysname && (fp = fopen("/etc/gentoo-release", "r"))) {
 		fgets(sysname, sizeof(sysname), fp);

string.c

@@ -26,6 +26,16 @@
 #include "gophernicus.h"
 
 
+/*
+ * Make a string's first character uppercase
+ */
+void ucfirst(char *str)
+{
+	if (str == NULL || !*str) return;
+	*str = toupper(*str);
+}
+
+
 /*
  * Repeat a character num times and zero-terminate
  */