vfs: export __inode_permission() to modules
We need to be able to check inode permissions (but not filesystem implied
permissions) for stackable filesystems. Expose this interface for overlayfs.
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
diff --git a/fs/internal.h b/fs/internal.h
index 0f0626a..757ba2a 100644
--- a/fs/internal.h
+++ b/fs/internal.h
@@ -47,7 +47,6 @@
/*
* namei.c
*/
-extern int __inode_permission(struct inode *, int);
extern int user_path_mountpoint_at(int, const char __user *, unsigned int, struct path *);
extern int vfs_path_lookup(struct dentry *, struct vfsmount *,
const char *, unsigned int, struct path *);
diff --git a/fs/namei.c b/fs/namei.c
index 75306b3..d944f6d 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -416,6 +416,7 @@
return security_inode_permission(inode, mask);
}
+EXPORT_SYMBOL(__inode_permission);
/**
* sb_permission - Check superblock-level permissions
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 10ed65b..5419df7 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2257,6 +2257,7 @@
#endif
extern int notify_change(struct dentry *, struct iattr *, struct inode **);
extern int inode_permission(struct inode *, int);
+extern int __inode_permission(struct inode *, int);
extern int generic_permission(struct inode *, int);
static inline bool execute_ok(struct inode *inode)