[Xen-devel] [PATCH 17 of 24] libxl: add libxl__spawn_confirm_offspring_startup

[Olaf Hering <olaf@xxxxxxxxx>]

# HG changeset patch
# User Olaf Hering <olaf@xxxxxxxxx>
# Date 1317653616 -7200
# Node ID 018f63b6e4863faca16a832a5a34c6a6e7726cf7
# Parent  35ec0355b3283a87477c7377a2fd3da5e84d2bcd
libxl: add libxl__spawn_confirm_offspring_startup

libxl__spawn_confirm_offspring_startup() is a generic version of
libxl__confirm_device_model_startup().

Signed-off-by: Olaf Hering <olaf@xxxxxxxxx>

diff -r 35ec0355b328 -r 018f63b6e486 tools/libxl/libxl_exec.c
--- a/tools/libxl/libxl_exec.c
+++ b/tools/libxl/libxl_exec.c
@@ -262,6 +262,30 @@ err:
     return -1;
 }
 
+static int detach_offspring(libxl__gc *gc,
+                               libxl__spawner_starting *starting)
+{
+    int rc;
+    rc = libxl__spawn_detach(gc, starting->for_spawn);
+    if (starting->for_spawn)
+        free(starting->for_spawn);
+    free(starting);
+    return rc;
+}
+
+int libxl__spawn_confirm_offspring_startup(libxl__gc *gc,
+                                       uint32_t timeout, char *what,
+                                       char *path, char *state,
+                                       libxl__spawner_starting *starting)
+{
+    int detach;
+    int problem = libxl__wait_for_offspring(gc, starting->domid, timeout, what,
+                                               path, state,
+                                               starting->for_spawn, NULL, 
NULL);
+    detach = detach_offspring(gc, starting);
+    return problem ? problem : detach;
+}
+
 static int libxl__set_fd_flag(libxl__gc *gc, int fd, int flag)
 {
     int flags;
diff -r 35ec0355b328 -r 018f63b6e486 tools/libxl/libxl_internal.h
--- a/tools/libxl/libxl_internal.h
+++ b/tools/libxl/libxl_internal.h
@@ -313,6 +313,12 @@ _hidden int libxl__wait_for_offspring(li
                                                        const char *state,
                                                        void *userdata),
                                  void *check_callback_userdata);
+
+_hidden int libxl__spawn_confirm_offspring_startup(libxl__gc *gc,
+                                       uint32_t timeout, char *what,
+                                       char *path, char *state,
+                                       libxl__spawner_starting *starting);
+
   /* Logs errors.  A copy of "what" is taken.  Return values:
    *  < 0   error, for_spawn need not be detached
    *   +1   caller is the parent, must call detach on *for_spawn eventually

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