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authorDavid Quigley <dpquigl@tycho.nsa.gov>2006-06-23 02:04:02 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-23 07:42:54 -0700
commit86c3a7645c05a7d06b72653aa4b2bea4e7229d1b (patch)
treeac68280e9c44dbc6ca4c88dc1e9c72a8f56be95e
parent35601547baf92d984b6e59cf3583649da04baea5 (diff)
downloadlinux-86c3a7645c05a7d06b72653aa4b2bea4e7229d1b.tar.gz
[PATCH] SELinux: add security_task_movememory calls to mm code
This patch inserts security_task_movememory hook calls into memory management code to enable security modules to mediate this operation between tasks. Since the last posting, the hook has been renamed following feedback from Christoph Lameter. Signed-off-by: David Quigley <dpquigl@tycho.nsa.gov> Acked-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: James Morris <jmorris@namei.org> Cc: Andi Kleen <ak@muc.de> Acked-by: Christoph Lameter <clameter@sgi.com> Acked-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--mm/mempolicy.c5
-rw-r--r--mm/migrate.c6
2 files changed, 11 insertions, 0 deletions
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 05b84acf0bb33..ec4a1a950df9e 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -88,6 +88,7 @@
#include <linux/proc_fs.h>
#include <linux/migrate.h>
#include <linux/rmap.h>
+#include <linux/security.h>
#include <asm/tlbflush.h>
#include <asm/uaccess.h>
@@ -942,6 +943,10 @@ asmlinkage long sys_migrate_pages(pid_t pid, unsigned long maxnode,
goto out;
}
+ err = security_task_movememory(task);
+ if (err)
+ goto out;
+
err = do_migrate_pages(mm, &old, &new,
capable(CAP_SYS_NICE) ? MPOL_MF_MOVE_ALL : MPOL_MF_MOVE);
out:
diff --git a/mm/migrate.c b/mm/migrate.c
index 033a12f4c9499..1c2a71aa05cd4 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -27,6 +27,7 @@
#include <linux/writeback.h>
#include <linux/mempolicy.h>
#include <linux/vmalloc.h>
+#include <linux/security.h>
#include "internal.h"
@@ -905,6 +906,11 @@ asmlinkage long sys_move_pages(pid_t pid, unsigned long nr_pages,
goto out2;
}
+ err = security_task_movememory(task);
+ if (err)
+ goto out2;
+
+
task_nodes = cpuset_mems_allowed(task);
/* Limit nr_pages so that the multiplication may not overflow */