[PATCH 5/6] tools: Introduce a non-truncating xc_xenver_cmdline()

[Andrew Cooper]

Update libxl to match.  No API/ABI change.

Signed-off-by: Andrew Cooper <andrew.coop...@citrix.com>
---
CC: Wei Liu <w...@xen.org>
CC: Anthony PERARD <anthony.per...@citrix.com>
CC: Juergen Gross <jgr...@suse.com>
---
 tools/include/xenctrl.h      | 1 +
 tools/libs/ctrl/xc_version.c | 5 +++++
 tools/libs/light/libxl.c     | 4 +---
 3 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/tools/include/xenctrl.h b/tools/include/xenctrl.h
index 48dbf3eab75f..fd80a509197d 100644
--- a/tools/include/xenctrl.h
+++ b/tools/include/xenctrl.h
@@ -1611,6 +1611,7 @@ int xc_version(xc_interface *xch, int cmd, void *arg);
 char *xc_xenver_extraversion(xc_interface *xch);
 char *xc_xenver_capabilities(xc_interface *xch);
 char *xc_xenver_changeset(xc_interface *xch);
+char *xc_xenver_commandline(xc_interface *xch);
 
 int xc_flask_op(xc_interface *xch, xen_flask_op_t *op);
 
diff --git a/tools/libs/ctrl/xc_version.c b/tools/libs/ctrl/xc_version.c
index 9f2cae03dba8..02f6e9551b57 100644
--- a/tools/libs/ctrl/xc_version.c
+++ b/tools/libs/ctrl/xc_version.c
@@ -166,3 +166,8 @@ char *xc_xenver_changeset(xc_interface *xch)
 {
     return varbuf_simple_string(xch, XENVER_changeset2);
 }
+
+char *xc_xenver_commandline(xc_interface *xch)
+{
+    return varbuf_simple_string(xch, XENVER_commandline2);
+}
diff --git a/tools/libs/light/libxl.c b/tools/libs/light/libxl.c
index 80e763aba944..3f906a47148b 100644
--- a/tools/libs/light/libxl.c
+++ b/tools/libs/light/libxl.c
@@ -583,7 +583,6 @@ const libxl_version_info* libxl_get_version_info(libxl_ctx 
*ctx)
     union {
         xen_compile_info_t xen_cc;
         xen_platform_parameters_t p_parms;
-        xen_commandline_t xen_commandline;
         xen_build_id_t build_id;
     } u;
     long xen_version;
@@ -613,8 +612,7 @@ const libxl_version_info* libxl_get_version_info(libxl_ctx 
*ctx)
 
     info->pagesize = xc_version(ctx->xch, XENVER_pagesize, NULL);
 
-    xc_version(ctx->xch, XENVER_commandline, &u.xen_commandline);
-    info->commandline = libxl__strdup(NOGC, u.xen_commandline);
+    info->commandline = xc_xenver_commandline(ctx->xch);
 
     u.build_id.len = sizeof(u) - sizeof(u.build_id);
     r = libxl__xc_version_wrap(gc, info, &u.build_id);
-- 
2.11.0