cleanups

1 files changed, 60 insertions, 0 deletions

diff --git a/xs_tools.c b/xs_tools.c
new file mode 100644
index 0000000..5a72b45
--- /dev/null
+++ b/xs_tools.c
@@ -0,0 +1,60 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <xs.h>
+
+#include "xs_tools.h"
+
+/* ------------------------------------------------------------- */
+
+struct xs_handle *xenstore_open(int daemon, int domain,
+				int readonly_ok, int verbose)
+{
+    struct xs_handle *xenstore = NULL;
+
+    if (NULL == xenstore && daemon && readonly_ok) {
+	xenstore = xs_daemon_open_readonly();
+	if (NULL == xenstore)
+	    fprintf(stderr,"can't connect to %s\n",xs_daemon_socket_ro());
+	else
+	    if (verbose)
+		printf("connected to %s\n", xs_daemon_socket_ro());
+    }
+
+    if (NULL == xenstore && daemon) {
+	xenstore = xs_daemon_open();
+	if (NULL == xenstore)
+	    fprintf(stderr,"can't connect to %s\n",xs_daemon_socket());
+	else
+	    if (verbose)
+		printf("connected to %s\n", xs_daemon_socket());
+    }
+
+    if (NULL == xenstore && domain) {
+	xenstore = xs_domain_open();
+	if (NULL == xenstore)
+	    fprintf(stderr, "can't connect to %s\n", xs_domain_dev());
+	else
+	    if (verbose)
+		printf("connected to %s\n", xs_domain_dev());
+    }
+    return xenstore;
+}
+
+int xenstore_read(struct xs_handle *xenstore, char *path, char *dst, size_t size)
+{
+    xs_transaction_t xst;
+    char *xs_value = NULL;
+
+    xst = xs_transaction_start(xenstore);
+    if (!xst)
+	return -1;
+
+    xs_value = xs_read(xenstore, xst, path, NULL);
+    xs_transaction_end(xenstore, xst, 0);
+    if (NULL == xs_value)
+	return -2;
+    snprintf(dst, size, "%s", xs_value);
+    free(xs_value);
+    return 0;
+}