[xen staging] libxl: Probe QEMU for -run-with user=user and use it

[patchbot@xxxxxxx]

commit 1436593d5f8f7f700478e307d5198535ba69f88d
Author:     Anthony PERARD <anthony.perard@xxxxxxxxxx>
AuthorDate: Fri Aug 30 09:49:40 2024 +0000
Commit:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CommitDate: Fri Aug 30 18:14:11 2024 +0100

    libxl: Probe QEMU for -run-with user=user and use it
    
    "-runas" is deprecated since QEMU 9.1 and will be remove in a future
    release.
    
    Signed-off-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
    Reviewed-by: Jason Andryuk <jason.andryuk@xxxxxxx>
---
 tools/libs/light/libxl_dm.c       | 12 ++++++++++--
 tools/libs/light/libxl_internal.h |  1 +
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/tools/libs/light/libxl_dm.c b/tools/libs/light/libxl_dm.c
index 15b157060f..1f2f5bd97a 100644
--- a/tools/libs/light/libxl_dm.c
+++ b/tools/libs/light/libxl_dm.c
@@ -2052,8 +2052,13 @@ static int libxl__build_device_model_args_new(libxl__gc 
*gc,
         }
 
         if (state->dm_runas) {
-            flexarray_append(dm_args, "-runas");
-            flexarray_append(dm_args, state->dm_runas);
+            if (qemu_opts->have_runwith_user) {
+                flexarray_append_pair(dm_args, "-run-with",
+                                      GCSPRINTF("user=%s", state->dm_runas));
+            } else {
+                flexarray_append(dm_args, "-runas");
+                flexarray_append(dm_args, state->dm_runas);
+            }
         }
     }
     flexarray_append(dm_args, NULL);
@@ -3073,6 +3078,9 @@ static void device_model_probe_cmdline(libxl__egc *egc,
                 if (!strcmp("chroot", libxl__json_object_get_string(o))) {
                     dmss->qemu_opts.have_runwith_chroot = true;
                 }
+                else if (!strcmp("user", libxl__json_object_get_string(o))) {
+                    dmss->qemu_opts.have_runwith_user = true;
+                }
             }
 
             /*
diff --git a/tools/libs/light/libxl_internal.h 
b/tools/libs/light/libxl_internal.h
index 0133c57e01..089a2f949c 100644
--- a/tools/libs/light/libxl_internal.h
+++ b/tools/libs/light/libxl_internal.h
@@ -4145,6 +4145,7 @@ typedef struct libxl__dm_spawn_state 
libxl__dm_spawn_state;
 typedef struct libxl__qemu_available_opts libxl__qemu_available_opts;
 struct libxl__qemu_available_opts {
     bool have_runwith_chroot;
+    bool have_runwith_user;
 };
 
 typedef void libxl__dm_spawn_cb(libxl__egc *egc, libxl__dm_spawn_state*,
--
generated by git-patchbot for /home/xen/git/xen.git#staging