[PATCH] sysctl: add a parent entry to ctl_table and set the parent entry

Add a parent entry into the ctl_table so you can walk the list of parents and
find the entire path to a ctl_table entry.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Cc: Stephen Smalley <sds@tycho.nsa.gov>
Cc: James Morris <jmorris@namei.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h
index 89150494bd10..1371d7b86810 100644
--- a/include/linux/sysctl.h
+++ b/include/linux/sysctl.h
@@ -1022,6 +1022,7 @@ struct ctl_table
         int maxlen;
         mode_t mode;
         ctl_table *child;
+        ctl_table *parent;              /* Automatically set */
         proc_handler *proc_handler;     /* Callback for text formatting */
         ctl_handler *strategy;          /* Callback function for all r/w */
         struct proc_dir_entry *de;      /* /proc control block */