Re: [Xen-devel] [PATCH] xl: Check for dependencies in xl

[Kamala Narasimhan <kamala.narasimhan@xxxxxxxxx>]

Revised patch based on your comments.  Please let me know if there are
further suggestions.

Signed-off-by: Kamala Narasimhan <kamala.narasimhan@xxxxxxxxxx>

Kamala

diff -r fe8a177ae9cb tools/libxl/libxl.c
--- a/tools/libxl/libxl.c       Wed Jan 19 15:29:04 2011 +0000
+++ b/tools/libxl/libxl.c       Wed Jan 19 13:42:24 2011 -0500
@@ -38,13 +38,24 @@

 #define PAGE_TO_MEMKB(pages) ((pages) * 4)

+static char const xenstore_pid_file[] = "/var/run/xenstore.pid";
+
 int libxl_ctx_init(libxl_ctx *ctx, int version, xentoollog_logger *lg)
 {
+    struct stat stat_buf;
+
     if (version != LIBXL_VERSION)
         return ERROR_VERSION;
     memset(ctx, 0, sizeof(libxl_ctx));
     ctx->lg = lg;
     memset(&ctx->version_info, 0, sizeof(libxl_version_info));
+
+    if ( stat(xenstore_pid_file, &stat_buf) != 0 ) {
+        LIBXL__LOG(ctx, LIBXL__LOG_ERROR,
+            "Is xenstore daemon running?\nStat on file %s returned -
\"%s\".\n",
+            xenstore_pid_file, strerror(errno));
+        return ERROR_FAIL;
+    }

     ctx->xch = xc_interface_open(lg,lg,0);
     if (!ctx->xch) {

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel