[PATCH] SELinux: add security_task_movememory calls to mm code (86c3a764) · Commits · 戴 / test

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>

mm/mempolicy.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -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:

mm/migrate.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -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 */

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