CRED: Pass credentials through dentry_open()
Pass credentials through dentry_open() so that the COW creds patch can have
SELinux's flush_unauthorized_files() pass the appropriate creds back to itself
when it opens its null chardev.
The security_dentry_open() call also now takes a creds pointer, as does the
dentry_open hook in struct security_operations.
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: James Morris <jmorris@namei.org>
Signed-off-by: James Morris <jmorris@namei.org>
diff --git a/include/linux/fs.h b/include/linux/fs.h
index b3d404a..3bfec13 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -315,6 +315,7 @@
struct kstatfs;
struct vm_area_struct;
struct vfsmount;
+struct cred;
extern void __init inode_init(void);
extern void __init inode_init_early(void);
@@ -1673,7 +1674,8 @@
extern long do_sys_open(int dfd, const char __user *filename, int flags,
int mode);
extern struct file *filp_open(const char *, int, int);
-extern struct file * dentry_open(struct dentry *, struct vfsmount *, int);
+extern struct file * dentry_open(struct dentry *, struct vfsmount *, int,
+ const struct cred *);
extern int filp_close(struct file *, fl_owner_t id);
extern char * getname(const char __user *);
diff --git a/include/linux/security.h b/include/linux/security.h
index 9239cc1..7e9fe04 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -1402,7 +1402,7 @@
int (*file_send_sigiotask) (struct task_struct *tsk,
struct fown_struct *fown, int sig);
int (*file_receive) (struct file *file);
- int (*dentry_open) (struct file *file);
+ int (*dentry_open) (struct file *file, const struct cred *cred);
int (*task_create) (unsigned long clone_flags);
int (*cred_alloc_security) (struct cred *cred);
@@ -1658,7 +1658,7 @@
int security_file_send_sigiotask(struct task_struct *tsk,
struct fown_struct *fown, int sig);
int security_file_receive(struct file *file);
-int security_dentry_open(struct file *file);
+int security_dentry_open(struct file *file, const struct cred *cred);
int security_task_create(unsigned long clone_flags);
int security_cred_alloc(struct cred *cred);
void security_cred_free(struct cred *cred);
@@ -2171,7 +2171,8 @@
return 0;
}
-static inline int security_dentry_open(struct file *file)
+static inline int security_dentry_open(struct file *file,
+ const struct cred *cred)
{
return 0;
}
