xl: introduce xcalloc

Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Cc: Ian Campbell <ian.campbell@citrix.com>
Cc: Ian Jackson <ian.jackson@eu.citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>

diff --git a/tools/libxl/xl_cmdimpl.c b/tools/libxl/xl_cmdimpl.c
index 04faf984268b846651b4a589a2990489e7aba6a8..1de98045f1e0cff8e55aa2e2c4469b7ea7c9d6ca 100644 (file)
--- a/tools/libxl/xl_cmdimpl.c
+++ b/tools/libxl/xl_cmdimpl.c
@@ -289,6 +289,16 @@ static void *xmalloc(size_t sz) {
     return r;
 }
 
+static void *xcalloc(size_t n, size_t sz) __attribute__((unused));
+static void *xcalloc(size_t n, size_t sz) {
+    void *r = calloc(n, sz);
+    if (!r) {
+        fprintf(stderr,"xl: Unable to calloc %zu bytes.\n", sz*n);
+        exit(-ERROR_FAIL);
+    }
+    return r;
+}
+
 static void *xrealloc(void *ptr, size_t sz) {
     void *r;
     if (!sz) { free(ptr); return 0; }