CRED: Detach the credentials from task_struct
Detach the credentials from task_struct, duplicating them in copy_process()
and releasing them in __put_task_struct().
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: James Morris <jmorris@namei.org>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Signed-off-by: James Morris <jmorris@namei.org>
diff --git a/include/linux/security.h b/include/linux/security.h
index 9f305d4..9239cc1 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -593,15 +593,15 @@
* manual page for definitions of the @clone_flags.
* @clone_flags contains the flags indicating what should be shared.
* Return 0 if permission is granted.
- * @task_alloc_security:
- * @p contains the task_struct for child process.
- * Allocate and attach a security structure to the p->security field. The
- * security field is initialized to NULL when the task structure is
+ * @cred_alloc_security:
+ * @cred contains the cred struct for child process.
+ * Allocate and attach a security structure to the cred->security field.
+ * The security field is initialized to NULL when the task structure is
* allocated.
* Return 0 if operation was successful.
- * @task_free_security:
- * @p contains the task_struct for process.
- * Deallocate and clear the p->security field.
+ * @cred_free:
+ * @cred points to the credentials.
+ * Deallocate and clear the cred->security field in a set of credentials.
* @task_setuid:
* Check permission before setting one or more of the user identity
* attributes of the current process. The @flags parameter indicates
@@ -1405,8 +1405,8 @@
int (*dentry_open) (struct file *file);
int (*task_create) (unsigned long clone_flags);
- int (*task_alloc_security) (struct task_struct *p);
- void (*task_free_security) (struct task_struct *p);
+ int (*cred_alloc_security) (struct cred *cred);
+ void (*cred_free) (struct cred *cred);
int (*task_setuid) (uid_t id0, uid_t id1, uid_t id2, int flags);
int (*task_post_setuid) (uid_t old_ruid /* or fsuid */ ,
uid_t old_euid, uid_t old_suid, int flags);
@@ -1660,8 +1660,8 @@
int security_file_receive(struct file *file);
int security_dentry_open(struct file *file);
int security_task_create(unsigned long clone_flags);
-int security_task_alloc(struct task_struct *p);
-void security_task_free(struct task_struct *p);
+int security_cred_alloc(struct cred *cred);
+void security_cred_free(struct cred *cred);
int security_task_setuid(uid_t id0, uid_t id1, uid_t id2, int flags);
int security_task_post_setuid(uid_t old_ruid, uid_t old_euid,
uid_t old_suid, int flags);
@@ -2181,12 +2181,12 @@
return 0;
}
-static inline int security_task_alloc(struct task_struct *p)
+static inline int security_cred_alloc(struct cred *cred)
{
return 0;
}
-static inline void security_task_free(struct task_struct *p)
+static inline void security_cred_free(struct cred *cred)
{ }
static inline int security_task_setuid(uid_t id0, uid_t id1, uid_t id2,