--- kernel-source-2.6.17.orig/include/linux/syscalls.h
+++ kernel-source-2.6.17/include/linux/syscalls.h
@@ -41,6 +41,7 @@ struct stat;
 struct stat64;
 struct statfs;
 struct statfs64;
+struct ustat;
 struct __sysctl_args;
 struct sysinfo;
 struct timespec;
--- kernel-source-2.6.17.orig/include/linux/types.h
+++ kernel-source-2.6.17/include/linux/types.h
@@ -180,11 +180,13 @@ #ifdef __KERNEL__
 typedef unsigned __bitwise__ gfp_t;
 #endif
 
+#ifdef __KERNEL__
 struct ustat {
 	__kernel_daddr_t	f_tfree;
 	__kernel_ino_t		f_tinode;
 	char			f_fname[6];
 	char			f_fpack[6];
 };
+#endif
 
 #endif /* _LINUX_TYPES_H */