sd-bus: update to current kernel version, by splitting off the extended KDBUS_ITEM_PIDS structure from KDBUS_ITEM_CREDS

Also:

- adds support for euid, suid, fsuid, egid, sgid, fsgid fields.

- makes augmentation of creds with data from /proc explicitly
  controllable to give apps better control over this, given that this is
  racy.

- enables augmentation for kdbus connections (previously we only did it
  for dbus1). This is useful since with recent kdbus versions it is
  possible for clients to control the metadata they want to send.

- changes sd_bus_query_sender_privilege() to take the euid of the client
  into consideration, if known

- when we don't have permissions to read augmentation data from /proc,
  don't fail, just don't add the data in

1 files changed, 7 insertions, 0 deletions

diff --git a/src/libsystemd/sd-bus/bus-creds.h b/src/libsystemd/sd-bus/bus-creds.h
index cf1f611237..15821a57d2 100644
--- a/src/libsystemd/sd-bus/bus-creds.h
+++ b/src/libsystemd/sd-bus/bus-creds.h
@@ -32,7 +32,14 @@ struct sd_bus_creds {
         uint64_t mask;
 
         uid_t uid;
+        uid_t euid;
+        uid_t suid;
+        uid_t fsuid;
         gid_t gid;
+        gid_t egid;
+        gid_t sgid;
+        gid_t fsgid;
+
         pid_t pid;
         usec_t pid_starttime;
         pid_t tid;