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()
43 	handle = kzalloc(struct_size(handle, f_handle, f_handle.handle_bytes),  in do_sys_name_to_handle()
45 	if (!handle)  in do_sys_name_to_handle()
48 	/* convert handle size to multiple of sizeof(u32) */  in do_sys_name_to_handle()
51 	/* we ask for a non connectable maybe decodeable file handle */  in do_sys_name_to_handle()
53 				    (struct fid *)handle->f_handle,  in do_sys_name_to_handle()
55 	handle->handle_type = retval;  in do_sys_name_to_handle()
56 	/* convert handle size to bytes */  in do_sys_name_to_handle()
58 	handle->handle_bytes = handle_bytes;  in do_sys_name_to_handle()
59 	if ((handle->handle_bytes > f_handle.handle_bytes) ||  in do_sys_name_to_handle()
63 		 * But file system returned 255 always. So handle  in do_sys_name_to_handle()
69 		 * set the handle size to zero so we copy only  in do_sys_name_to_handle()
77 	    copy_to_user(ufh, handle,  in do_sys_name_to_handle()
78 			 struct_size(handle, f_handle, handle_bytes)))  in do_sys_name_to_handle()
80 	kfree(handle);  in do_sys_name_to_handle()
85  * sys_name_to_handle_at: convert name to handle
87  * @name: name that should be converted to handle.
88  * @handle: resulting file handle
91  *        and whether a decodable file handle is required.
93  * @handle->handle_size indicate the space available to store the
94  * variable part of the file handle in bytes. If there is not
99 		struct file_handle __user *, handle, int __user *, mnt_id,  in SYSCALL_DEFINE5()
116 		err = do_sys_name_to_handle(&path, handle, mnt_id, fh_flags);  in SYSCALL_DEFINE5()
146 static int do_handle_to_path(int mountdirfd, struct file_handle *handle,  in do_handle_to_path()  argument
157 	/* change the handle size to multiple of sizeof(u32) */  in do_handle_to_path()
158 	handle_dwords = handle->handle_bytes >> 2;  in do_handle_to_path()
160 					  (struct fid *)handle->f_handle,  in do_handle_to_path()
161 					  handle_dwords, handle->handle_type,  in do_handle_to_path()
179 	struct file_handle *handle = NULL;  in handle_to_path()  local
182 	 * With handle we don't look at the execute bit on the  in handle_to_path()
199 	handle = kmalloc(struct_size(handle, f_handle, f_handle.handle_bytes),  in handle_to_path()
201 	if (!handle) {  in handle_to_path()
205 	/* copy the full handle */  in handle_to_path()
206 	*handle = f_handle;  in handle_to_path()
207 	if (copy_from_user(&handle->f_handle,  in handle_to_path()
214 	retval = do_handle_to_path(mountdirfd, handle, path);  in handle_to_path()
217 	kfree(handle);  in handle_to_path()
252  * sys_open_by_handle_at: Open the file handle
254  * @handle: file handle to be opened
258  * of the mount point. file handle is decoded relative
263 		struct file_handle __user *, handle,  in SYSCALL_DEFINE3()
271 	ret = do_handle_open(mountdirfd, handle, flags);  in SYSCALL_DEFINE3()
281 			     struct file_handle __user *, handle, int, flags)  in COMPAT_SYSCALL_DEFINE3()
283 	return do_handle_open(mountdirfd, handle, flags);  in COMPAT_SYSCALL_DEFINE3()