The patch titled
SELinux: add task_movememory hook
has been added to the -mm tree. Its filename is
selinux-add-task_movememory-hook.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: SELinux: add task_movememory hook
From: David Quigley <dpquigl@xxxxxxxxxxxxx>
This patch adds new security hook, task_movememory, to be called when memory
owened by a task is to be moved (e.g. when migrating pages to a this hook is
identical to the setscheduler implementation, but a separate hook introduced
to allow this check to be specialized in the future if necessary.
Since the last posting, the hook has been renamed following feedback from
Christoph Lameter.
Signed-off-by: David Quigley <dpquigl@xxxxxxxxxxxxx>
Acked-by: Stephen Smalley <sds@xxxxxxxxxxxxx>
Signed-off-by: James Morris <jmorris@xxxxxxxxx>
Cc: Christoph Lameter <clameter@xxxxxxx>
Cc: Andi Kleen <ak@xxxxxx>
Cc: Chris Wright <chrisw@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
include/linux/security.h | 15 +++++++++++++++
security/dummy.c | 6 ++++++
security/selinux/hooks.c | 6 ++++++
3 files changed, 27 insertions(+)
diff -puN include/linux/security.h~selinux-add-task_movememory-hook include/linux/security.h
--- a/include/linux/security.h~selinux-add-task_movememory-hook
+++ a/include/linux/security.h
@@ -601,6 +601,10 @@ struct swap_info_struct;
* @p.
* @p contains the task_struct for process.
* Return 0 if permission is granted.
+ * @task_movememory
+ * Check permission before moving memory owned by process @p.
+ * @p contains the task_struct for process.
+ * Return 0 if permission is granted.
* @task_kill:
* Check permission before sending signal @sig to @p. @info can be NULL,
* the constant 1, or a pointer to a siginfo structure. If @info is 1 or
@@ -1220,6 +1224,7 @@ struct security_operations {
int (*task_setscheduler) (struct task_struct * p, int policy,
struct sched_param * lp);
int (*task_getscheduler) (struct task_struct * p);
+ int (*task_movememory) (struct task_struct * p);
int (*task_kill) (struct task_struct * p,
struct siginfo * info, int sig);
int (*task_wait) (struct task_struct * p);
@@ -1865,6 +1870,11 @@ static inline int security_task_getsched
return security_ops->task_getscheduler (p);
}
+static inline int security_task_movememory (struct task_struct *p)
+{
+ return security_ops->task_movememory (p);
+}
+
static inline int security_task_kill (struct task_struct *p,
struct siginfo *info, int sig)
{
@@ -2512,6 +2522,11 @@ static inline int security_task_getsched
return 0;
}
+static inline int security_task_movememory (struct task_struct *p)
+{
+ return 0;
+}
+
static inline int security_task_kill (struct task_struct *p,
struct siginfo *info, int sig)
{
diff -puN security/dummy.c~selinux-add-task_movememory-hook security/dummy.c
--- a/security/dummy.c~selinux-add-task_movememory-hook
+++ a/security/dummy.c
@@ -537,6 +537,11 @@ static int dummy_task_getscheduler (stru
return 0;
}
+static int dummy_task_movememory (struct task_struct *p)
+{
+ return 0;
+}
+
static int dummy_task_wait (struct task_struct *p)
{
return 0;
@@ -981,6 +986,7 @@ void security_fixup_ops (struct security
set_to_dummy_if_null(ops, task_setrlimit);
set_to_dummy_if_null(ops, task_setscheduler);
set_to_dummy_if_null(ops, task_getscheduler);
+ set_to_dummy_if_null(ops, task_movememory);
set_to_dummy_if_null(ops, task_wait);
set_to_dummy_if_null(ops, task_kill);
set_to_dummy_if_null(ops, task_prctl);
diff -puN security/selinux/hooks.c~selinux-add-task_movememory-hook security/selinux/hooks.c
--- a/security/selinux/hooks.c~selinux-add-task_movememory-hook
+++ a/security/selinux/hooks.c
@@ -2679,6 +2679,11 @@ static int selinux_task_getscheduler(str
return task_has_perm(current, p, PROCESS__GETSCHED);
}
+static int selinux_task_movememory(struct task_struct *p)
+{
+ return task_has_perm(current, p, PROCESS__SETSCHED);
+}
+
static int selinux_task_kill(struct task_struct *p, struct siginfo *info, int sig)
{
u32 perm;
@@ -4392,6 +4397,7 @@ static struct security_operations selinu
.task_setrlimit = selinux_task_setrlimit,
.task_setscheduler = selinux_task_setscheduler,
.task_getscheduler = selinux_task_getscheduler,
+ .task_movememory = selinux_task_movememory,
.task_kill = selinux_task_kill,
.task_wait = selinux_task_wait,
.task_prctl = selinux_task_prctl,
_
Patches currently in -mm which might be from dpquigl@xxxxxxxxxxxxx are
selinux-add-security-hooks-to-getsetaffinity.patch
selinux-add-security-hook-call-to-mediate-attach_task.patch
selinux-add-task_movememory-hook.patch
selinux-add-security_task_movememory-calls-to-mm-code.patch
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