bus: parse uid/gid/pid/tid meta data from kdbus messages

[elogind.git] / src / libsystemd-bus / bus-kernel.c

diff --git a/src/libsystemd-bus/bus-kernel.c b/src/libsystemd-bus/bus-kernel.c
index 712b697b0a8410d518e19342744be3eebb5282d3..83379d1430408f6807f53a90edb28b5a38174a61 100644 (file)
--- a/src/libsystemd-bus/bus-kernel.c
+++ b/src/libsystemd-bus/bus-kernel.c
@@ -224,6 +224,7 @@ static int bus_kernel_make_message(sd_bus *bus, struct kdbus_msg *k, sd_bus_mess
         _cleanup_free_ int *fds = NULL;
         struct bus_header *h = NULL;
         size_t total, n_bytes = 0, idx = 0;
+        struct kdbus_creds *creds = NULL;
         int r;
 
         assert(bus);
@@ -262,7 +263,9 @@ static int bus_kernel_make_message(sd_bus *bus, struct kdbus_msg *k, sd_bus_mess
                         fds = f;
                         memcpy(fds + n_fds, d->fds, j);
                         n_fds += j;
-                }
+
+                } else if (d->type == KDBUS_MSG_SRC_CREDS)
+                        creds = &d->creds;
         }
 
         if (!h)
@@ -301,6 +304,14 @@ static int bus_kernel_make_message(sd_bus *bus, struct kdbus_msg *k, sd_bus_mess
                 idx += l;
         }
 
+        if (creds) {
+                m->uid = creds->uid;
+                m->gid = creds->gid;
+                m->pid = creds->pid;
+                m->tid = creds->tid;
+                m->uid_valid = m->gid_valid = true;
+        }
+
         r = bus_message_parse_fields(m);
         if (r < 0) {
                 sd_bus_message_unref(m);