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authorDavid Quigley <dpquigl@tycho.nsa.gov>2006-06-23 02:04:01 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-23 07:42:54 -0700
commit35601547baf92d984b6e59cf3583649da04baea5 (patch)
treea392501e6e004ed33789dbf3f7a9fe43295439e1 /include
parent22fb52dd736a62e24c44c50739007496265dc38c (diff)
[PATCH] SELinux: add task_movememory hook
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@tycho.nsa.gov> Acked-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: James Morris <jmorris@namei.org> Cc: Christoph Lameter <clameter@sgi.com> Cc: Andi Kleen <ak@muc.de> Acked-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/security.h15
1 files changed, 15 insertions, 0 deletions
diff --git a/include/linux/security.h b/include/linux/security.h
index 65b32a0c620..d2c17bd91a2 100644
--- a/include/linux/security.h
+++ b/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_getscheduler (struct task_struct *p)
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_getscheduler (struct task_struct *p)
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)
{