Implement explicit selection of subsystem types.

- Fixes bugs #347583, #349389, both of which were triggered by cgroups
  being detected as the LXC subsystem type.
- Makes it much easier to select "prefix" type.
- "rc -S" will now print a warning if you have not configured rc_sys in
  /etc/rc.conf
- All other semantics of rc_sys are unchanged in this patch.

Signed-off-by: Robin H. Johnson <robbat2@gentoo.org>

1 files changed, 11 insertions, 0 deletions

diff --git a/src/librc/rc.h.in b/src/librc/rc.h.in
index d9d0453..3d0ffb4 100644
--- a/src/librc/rc.h.in
+++ b/src/librc/rc.h.in
@@ -274,8 +274,19 @@ bool rc_service_daemons_crashed(const char *);
 #define RC_SYS_VSERVER "VSERVER"
 #define RC_SYS_XEN0    "XEN0"
 #define RC_SYS_XENU    "XENU"
+
+/*! Returns the type of subsystem
+ * @return string from RC_SYS_* types or NULL if none detected */
 const char *rc_sys(void);
 
+/*! Returns the type of subsystem using old automatic code
+ * @return string from RC_SYS_* types or NULL if none detected */
+const char *rc_sys_v1(void);
+
+/*! Returns the type of subsystem using new rc.conf rc_sys value
+ * @return string from RC_SYS_* types or NULL if none detected */
+const char *rc_sys_v2(void);
+
 /*! @name Dependency options
  * These options can change the services found by the rc_get_depinfo and
  * rc_get_depends functions. */