24 	struct file_handle *handle = NULL;  in do_sys_name_to_handle()  local
28 	 * the file handle if decodeable file handle was requested.  in do_sys_name_to_handle()
39 	handle = kmalloc(sizeof(struct file_handle) + f_handle.handle_bytes,  in do_sys_name_to_handle()
41 	if (!handle)  in do_sys_name_to_handle()
44 	/* convert handle size to multiple of sizeof(u32) */  in do_sys_name_to_handle()
47 	/* we ask for a non connectable maybe decodeable file handle */  in do_sys_name_to_handle()
49 				    (struct fid *)handle->f_handle,  in do_sys_name_to_handle()
51 	handle->handle_type = retval;  in do_sys_name_to_handle()
52 	/* convert handle size to bytes */  in do_sys_name_to_handle()
54 	handle->handle_bytes = handle_bytes;  in do_sys_name_to_handle()
55 	if ((handle->handle_bytes > f_handle.handle_bytes) ||  in do_sys_name_to_handle()
59 		 * But file system returned 255 always. So handle  in do_sys_name_to_handle()
65 		 * set the handle size to zero so we copy only  in do_sys_name_to_handle()
73 	    copy_to_user(ufh, handle,  in do_sys_name_to_handle()
76 	kfree(handle);  in do_sys_name_to_handle()
81  * sys_name_to_handle_at: convert name to handle
83  * @name: name that should be converted to handle.
84  * @handle: resulting file handle
87  *        and whether a decodable file handle is required.
89  * @handle->handle_size indicate the space available to store the
90  * variable part of the file handle in bytes. If there is not
95 		struct file_handle __user *, handle, int __user *, mnt_id,  in SYSCALL_DEFINE5()
112 		err = do_sys_name_to_handle(&path, handle, mnt_id, fh_flags);  in SYSCALL_DEFINE5()
142 static int do_handle_to_path(int mountdirfd, struct file_handle *handle,  in do_handle_to_path()  argument
153 	/* change the handle size to multiple of sizeof(u32) */  in do_handle_to_path()
154 	handle_dwords = handle->handle_bytes >> 2;  in do_handle_to_path()
156 					  (struct fid *)handle->f_handle,  in do_handle_to_path()
157 					  handle_dwords, handle->handle_type,  in do_handle_to_path()
175 	struct file_handle *handle = NULL;  in handle_to_path()  local
178 	 * With handle we don't look at the execute bit on the  in handle_to_path()
195 	handle = kmalloc(sizeof(struct file_handle) + f_handle.handle_bytes,  in handle_to_path()
197 	if (!handle) {  in handle_to_path()
201 	/* copy the full handle */  in handle_to_path()
202 	*handle = f_handle;  in handle_to_path()
203 	if (copy_from_user(&handle->f_handle,  in handle_to_path()
210 	retval = do_handle_to_path(mountdirfd, handle, path);  in handle_to_path()
213 	kfree(handle);  in handle_to_path()
248  * sys_open_by_handle_at: Open the file handle
250  * @handle: file handle to be opened
254  * of the mount point. file handle is decoded relative
259 		struct file_handle __user *, handle,  in SYSCALL_DEFINE3()
267 	ret = do_handle_open(mountdirfd, handle, flags);  in SYSCALL_DEFINE3()
277 			     struct file_handle __user *, handle, int, flags)  in COMPAT_SYSCALL_DEFINE3()
279 	return do_handle_open(mountdirfd, handle, flags);  in COMPAT_SYSCALL_DEFINE3()