libxl: add a flags argument to libxl_ctx_alloc.

Currently unused but gives us scope for expansion in an ABI compatible manner
in the future.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Ian Jackson <ian.jackson.citrix.com>
Committed-by: Ian Jackson <ian.jackson.citrix.com>

6 files changed, 9 insertions, 6 deletions

diff --git a/tools/libxl/gentest.py b/tools/libxl/gentest.py
index 24898b7a6e..05e77cce5e 100644
--- a/tools/libxl/gentest.py
+++ b/tools/libxl/gentest.py
@@ -239,7 +239,7 @@ int main(int argc, char **argv)
     logger = xtl_createlogger_stdiostream(stderr, XTL_DETAIL, 0);
     if (!logger) exit(1);
 
-    if (libxl_ctx_alloc(&ctx, LIBXL_VERSION, (xentoollog_logger*)logger)) {
+    if (libxl_ctx_alloc(&ctx, LIBXL_VERSION, 0, (xentoollog_logger*)logger)) {
         fprintf(stderr, "cannot init xl context\\n");
         exit(1);
     }
diff --git a/tools/libxl/libxl.c b/tools/libxl/libxl.c
index 9af0804643..c0a1c58801 100644
--- a/tools/libxl/libxl.c
+++ b/tools/libxl/libxl.c
@@ -39,7 +39,8 @@
 #define PAGE_TO_MEMKB(pages) ((pages) * 4)
 #define BACKEND_STRING_SIZE 5
 
-int libxl_ctx_alloc(libxl_ctx **pctx, int version, xentoollog_logger * lg)
+int libxl_ctx_alloc(libxl_ctx **pctx, int version,
+                    unsigned flags, xentoollog_logger * lg)
 {
     libxl_ctx *ctx;
     struct stat stat_buf;
diff --git a/tools/libxl/libxl.h b/tools/libxl/libxl.h
index 0d85f843f4..ef25c5da6d 100644
--- a/tools/libxl/libxl.h
+++ b/tools/libxl/libxl.h
@@ -245,7 +245,9 @@ typedef struct {
 } libxl_domain_config;
 
 /* context functions */
-int libxl_ctx_alloc(libxl_ctx **pctx, int version, xentoollog_logger *lg);
+int libxl_ctx_alloc(libxl_ctx **pctx, int version,
+                    unsigned flags /* none currently defined */,
+                    xentoollog_logger *lg);
 int libxl_ctx_free(libxl_ctx *ctx /* 0 is OK */);
 int libxl_ctx_postfork(libxl_ctx *ctx);
 
diff --git a/tools/libxl/xl.c b/tools/libxl/xl.c
index 4600f8e5ed..7288f5f980 100644
--- a/tools/libxl/xl.c
+++ b/tools/libxl/xl.c
@@ -116,7 +116,7 @@ int main(int argc, char **argv)
     logger = xtl_createlogger_stdiostream(stderr, minmsglevel,  0);
     if (!logger) exit(1);
 
-    if (libxl_ctx_alloc(&ctx, LIBXL_VERSION, (xentoollog_logger*)logger)) {
+    if (libxl_ctx_alloc(&ctx, LIBXL_VERSION, 0, (xentoollog_logger*)logger)) {
         fprintf(stderr, "cannot init xl context\n");
         exit(1);
     }
diff --git a/tools/ocaml/libs/xl/xenlight_stubs.c b/tools/ocaml/libs/xl/xenlight_stubs.c
index be05b8ea87..0944c5696f 100644
--- a/tools/ocaml/libs/xl/xenlight_stubs.c
+++ b/tools/ocaml/libs/xl/xenlight_stubs.c
@@ -59,7 +59,7 @@ static void log_destroy(struct xentoollog_logger *logger)
 	lg.logger.destroy = log_destroy; \
 	lg.logger.progress = NULL; \
 	caml_enter_blocking_section(); \
-	ret = libxl_ctx_alloc(&ctx, LIBXL_VERSION, (struct xentoollog_logger *) &lg); \
+	ret = libxl_ctx_alloc(&ctx, LIBXL_VERSION, 0, (struct xentoollog_logger *) &lg); \
 	if (ret != 0) \
 		failwith_xl("cannot init context", &lg);
 
diff --git a/tools/python/xen/lowlevel/xl/xl.c b/tools/python/xen/lowlevel/xl/xl.c
index 005acd699d..aadbee877b 100644
--- a/tools/python/xen/lowlevel/xl/xl.c
+++ b/tools/python/xen/lowlevel/xl/xl.c
@@ -687,7 +687,7 @@ PyXl_init(XlObject *self, PyObject *args, PyObject *kwds)
         return -1;
     }
 
-    if ( libxl_ctx_alloc(&self->ctx, LIBXL_VERSION,
+    if ( libxl_ctx_alloc(&self->ctx, LIBXL_VERSION, 0,
                 (xentoollog_logger*)self->logger) ) {
         PyErr_SetString(xl_error_obj, "cannot init xl context");
         return -1;