libxenlight: initial libxenlight implementation under tools/libxl

Signed-off-by: Vincent Hanquez <Vincent.Hanquez@eu.citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>

1 files changed, 108 insertions, 0 deletions

diff --git a/tools/libxl/libxl_xshelp.c b/tools/libxl/libxl_xshelp.c
new file mode 100644
index 0000000000..6286d02826
--- /dev/null
+++ b/tools/libxl/libxl_xshelp.c
@@ -0,0 +1,108 @@
+/*
+ * Copyright (C) 2009      Citrix Ltd.
+ * Author Vincent Hanquez <vincent.hanquez@eu.citrix.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation; version 2.1 only. with the special
+ * exception on linking described in file LICENSE.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ */
+
+#include <string.h>
+#include <stddef.h>
+#include "libxl.h"
+#include "libxl_internal.h"
+#include <stdio.h>
+#include <stdarg.h>
+
+char **libxl_xs_kvs_of_flexarray(struct libxl_ctx *ctx, flexarray_t *array, int length)
+{
+    char **kvs;
+    int i;
+
+    kvs = libxl_calloc(ctx, length + 2, sizeof(char *));
+    if (kvs) {
+        for (i = 0; i < length; i += 2) {
+            void *ptr;
+
+            flexarray_get(array, i, &ptr);
+            kvs[i] = (char *) ptr;
+            flexarray_get(array, i + 1, &ptr);
+            kvs[i + 1] = (char *) ptr;
+        }
+        kvs[i] = NULL;
+        kvs[i + 1] = NULL;
+    }
+    return kvs;
+}
+
+int libxl_xs_writev(struct libxl_ctx *ctx, xs_transaction_t t,
+                    char *dir, char *kvs[])
+{
+    char *path;
+    int i;
+
+    if (!kvs)
+        return 0;
+
+    for (i = 0; kvs[i] != NULL; i += 2) {
+        path = libxl_sprintf(ctx, "%s/%s", dir, kvs[i]);
+        if (path) {
+            int length = strlen(kvs[i + 1]);
+            xs_write(ctx->xsh, t, path, kvs[i + 1], length);
+        }
+        libxl_free(ctx, path);
+    }
+    return 0;
+}
+
+int libxl_xs_write(struct libxl_ctx *ctx, xs_transaction_t t,
+                   char *path, char *fmt, ...)
+{
+    char *s;
+    va_list ap;
+    int ret;
+    va_start(ap, fmt);
+    ret = vasprintf(&s, fmt, ap);
+    va_end(ap);
+
+    if (ret == -1) {
+        return -1;
+    }
+    xs_write(ctx->xsh, t, path, s, ret);
+    free(s);
+    return 0;
+}
+
+char * libxl_xs_read(struct libxl_ctx *ctx, xs_transaction_t t, char *path)
+{
+    unsigned int len;
+    char *ptr;
+
+    ptr = xs_read(ctx->xsh, t, path, &len);
+    if (ptr != NULL) {
+        libxl_ptr_add(ctx, ptr);
+        return ptr;
+    }
+    return 0;
+}
+
+char *libxl_xs_get_dompath(struct libxl_ctx *ctx, uint32_t domid)
+{
+    char *s = xs_get_domain_path(ctx->xsh, domid);
+    libxl_ptr_add(ctx, s);
+    return s;
+}
+
+char **libxl_xs_directory(struct libxl_ctx *ctx, xs_transaction_t t, char *path, unsigned int *nb)
+{
+    char **ret = NULL;
+    ret = xs_directory(ctx->xsh, XBT_NULL, path, nb);
+    libxl_ptr_add(ctx, ret);
+    return ret;
+}