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authorDavid Quigley <dpquigl@tycho.nsa.gov>2006-06-30 01:55:49 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-30 11:25:37 -0700
commita1836a42daf5ddfe9a891973734bd9a7d62eb504 (patch)
treee8819aec40aff3fa0eecd2ef9d92df8213bce58b /include
parent7a01955f99b65622a00ba5c8b39202ddc6fa65f8 (diff)
[PATCH] SELinux: Add security hook definition for getioprio and insert hooks
Add a new security hook definition for the sys_ioprio_get operation. At present, the SELinux hook function implementation for this hook is identical to the getscheduler implementation but a separate hook is introduced to allow this check to be specialized in the future if necessary. This patch also creates a helper function get_task_ioprio which handles the access check in addition to retrieving the ioprio value for the task. 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: Jens Axboe <axboe@suse.de> 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 d4b13d617f6..f75303831d0 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -585,6 +585,10 @@ struct swap_info_struct;
* @p contains the task_struct of process.
* @ioprio contains the new ioprio value
* Return 0 if permission is granted.
+ * @task_getioprio
+ * Check permission before getting the ioprio value of @p.
+ * @p contains the task_struct of process.
+ * Return 0 if permission is granted.
* @task_setrlimit:
* Check permission before setting the resource limits of the current
* process for @resource to @new_rlim. The old resource limit values can
@@ -1227,6 +1231,7 @@ struct security_operations {
int (*task_setgroups) (struct group_info *group_info);
int (*task_setnice) (struct task_struct * p, int nice);
int (*task_setioprio) (struct task_struct * p, int ioprio);
+ int (*task_getioprio) (struct task_struct * p);
int (*task_setrlimit) (unsigned int resource, struct rlimit * new_rlim);
int (*task_setscheduler) (struct task_struct * p, int policy,
struct sched_param * lp);
@@ -1864,6 +1869,11 @@ static inline int security_task_setioprio (struct task_struct *p, int ioprio)
return security_ops->task_setioprio (p, ioprio);
}
+static inline int security_task_getioprio (struct task_struct *p)
+{
+ return security_ops->task_getioprio (p);
+}
+
static inline int security_task_setrlimit (unsigned int resource,
struct rlimit *new_rlim)
{
@@ -2520,6 +2530,11 @@ static inline int security_task_setioprio (struct task_struct *p, int ioprio)
return 0;
}
+static inline int security_task_getioprio (struct task_struct *p)
+{
+ return 0;
+}
+
static inline int security_task_setrlimit (unsigned int resource,
struct rlimit *new_rlim)
{