Merge git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/sysctl-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/sysctl-2.6: (43 commits)
  security/tomoyo: Remove now unnecessary handling of security_sysctl.
  security/tomoyo: Add a special case to handle accesses through the internal proc mount.
  sysctl: Drop & in front of every proc_handler.
  sysctl: Remove CTL_NONE and CTL_UNNUMBERED
  sysctl: kill dead ctl_handler definitions.
  sysctl: Remove the last of the generic binary sysctl support
  sysctl net: Remove unused binary sysctl code
  sysctl security/tomoyo: Don't look at ctl_name
  sysctl arm: Remove binary sysctl support
  sysctl x86: Remove dead binary sysctl support
  sysctl sh: Remove dead binary sysctl support
  sysctl powerpc: Remove dead binary sysctl support
  sysctl ia64: Remove dead binary sysctl support
  sysctl s390: Remove dead sysctl binary support
  sysctl frv: Remove dead binary sysctl support
  sysctl mips/lasat: Remove dead binary sysctl support
  sysctl drivers: Remove dead binary sysctl support
  sysctl crypto: Remove dead binary sysctl support
  sysctl security/keys: Remove dead binary sysctl support
  sysctl kernel: Remove binary sysctl logic
  ...

1 files changed, 9 insertions, 0 deletions

diff --git a/security/tomoyo/realpath.c b/security/tomoyo/realpath.c
index 917f564cdab1..18369d497eb8 100644
--- a/security/tomoyo/realpath.c
+++ b/security/tomoyo/realpath.c
@@ -110,6 +110,15 @@ int tomoyo_realpath_from_path2(struct path *path, char *newname,
                 spin_unlock(&dcache_lock);
                 path_put(&root);
                 path_put(&ns_root);
+                /* Prepend "/proc" prefix if using internal proc vfs mount. */
+                if (!IS_ERR(sp) && (path->mnt->mnt_parent == path->mnt) &&
+                    (strcmp(path->mnt->mnt_sb->s_type->name, "proc") == 0)) {
+                        sp -= 5;
+                        if (sp >= newname)
+                                memcpy(sp, "/proc", 5);
+                        else
+                                sp = ERR_PTR(-ENOMEM);
+                }
         }
         if (IS_ERR(sp))
                 error = PTR_ERR(sp);