journald: log the slice of a process along with each message in _SYSTEMD_SLICE=

diff --git a/man/systemd.journal-fields.xml b/man/systemd.journal-fields.xml
index cffcccb..8a15598 100644 (file)
--- a/man/systemd.journal-fields.xml
+++ b/man/systemd.journal-fields.xml
@@ -223,17 +223,20 @@
                                 <term><varname>_SYSTEMD_UNIT=</varname></term>
                                 <term><varname>_SYSTEMD_USER_UNIT=</varname></term>
                                 <term><varname>_SYSTEMD_OWNER_UID=</varname></term>
+                                <term><varname>_SYSTEMD_SLICE=</varname></term>
 
                                 <listitem>
-                                        <para>The control group path in
-                                        the systemd hierarchy, the
+                                        <para>The control group path
+                                        in the systemd hierarchy, the
                                         systemd session ID (if any),
-                                        the systemd unit name (if any),
-                                        the systemd user session unit name (if any)
-                                        and the owner UID of the
-                                        systemd session (if any) of
-                                        the process the journal entry
-                                        originates from.</para>
+                                        the systemd unit name (if
+                                        any), the systemd user session
+                                        unit name (if any), the owner
+                                        UID of the systemd session (if
+                                        any) and the systemd slice
+                                        unit of the process the
+                                        journal entry originates
+                                        from.</para>
                                 </listitem>
                         </varlistentry>
 

diff --git a/src/journal/journald-server.c b/src/journal/journald-server.c
index ba211b3..709fa8b 100644 (file)
--- a/src/journal/journald-server.c
+++ b/src/journal/journald-server.c
@@ -638,6 +638,12 @@ static void dispatch_message_real(
                                 IOVEC_SET_STRING(iovec[n++], x);
                         }
 
+                        if (cg_path_get_slice(c, &t) >= 0) {
+                                x = strappenda("_SYSTEMD_SLICE=", t);
+                                free(t);
+                                IOVEC_SET_STRING(iovec[n++], x);
+                        }
+
                         free(c);
                 }
 

diff --git a/src/journal/journald-server.h b/src/journal/journald-server.h
index e856ef2..238fc8c 100644 (file)
--- a/src/journal/journald-server.h
+++ b/src/journal/journald-server.h
@@ -125,7 +125,7 @@ typedef struct Server {
         bool sync_scheduled;
 } Server;
 
-#define N_IOVEC_META_FIELDS 19
+#define N_IOVEC_META_FIELDS 20
 #define N_IOVEC_KERNEL_FIELDS 64
 #define N_IOVEC_UDEV_FIELDS 32
 #define N_IOVEC_OBJECT_FIELDS 11