[PATCH v4 11/32] libxl_dm: Add libxl__qemu_qmp_path()

[Anthony PERARD <anthony.perard@citrix.com>]

... which generate the path to a QMP socket that libxl uses.

Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
---

Notes:
    New in v4.

 tools/libxl/libxl_dm.c       | 9 +++++++--
 tools/libxl/libxl_internal.h | 1 +
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/tools/libxl/libxl_dm.c b/tools/libxl/libxl_dm.c
index fdd7fa3ba4..5c28a0ced4 100644
--- a/tools/libxl/libxl_dm.c
+++ b/tools/libxl/libxl_dm.c
@@ -910,6 +910,11 @@ static char *qemu_disk_ide_drive_string(libxl__gc *gc, const char *target_path,
     return drive;
 }
 
+const char *libxl__qemu_qmp_path(libxl__gc *gc, int domid)
+{
+    return GCSPRINTF("%s/qmp-libxl-%d", libxl__run_dir_path(), domid);
+}
+
 static int libxl__build_device_model_args_new(libxl__gc *gc,
                                         const char *dm, int guest_domid,
                                         const libxl_domain_config *guest_config,
@@ -946,8 +951,8 @@ static int libxl__build_device_model_args_new(libxl__gc *gc,
     flexarray_append(dm_args, "-chardev");
     flexarray_append(dm_args,
                      GCSPRINTF("socket,id=libxl-cmd,"
-                                    "path=%s/qmp-libxl-%d,server,nowait",
-                                    libxl__run_dir_path(), guest_domid));
+                               "path=%s,server,nowait",
+                               libxl__qemu_qmp_path(gc, guest_domid)));
 
     flexarray_append(dm_args, "-no-shutdown");
     flexarray_append(dm_args, "-mon");
diff --git a/tools/libxl/libxl_internal.h b/tools/libxl/libxl_internal.h
index 72ab177ce5..5b71a23d23 100644
--- a/tools/libxl/libxl_internal.h
+++ b/tools/libxl/libxl_internal.h
@@ -4424,6 +4424,7 @@ static inline bool libxl__string_is_default(char **s)
 
 _hidden int libxl__prepare_sockaddr_un(libxl__gc *gc, struct sockaddr_un *un,
                                        const char *path, const char *what);
+_hidden const char *libxl__qemu_qmp_path(libxl__gc *gc, int guest_domid);
 #endif
 
 /*
-- 
Anthony PERARD


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