Structs starting with `r' in bsd/vfs

• readlink_args bsd/vfs/vfs_syscalls.c:1624
• rename_args bsd/vfs/vfs_syscalls.c:2172
• revoke_args bsd/vfs/vfs_syscalls.c:2638
• rmdir_args bsd/vfs/vfs_syscalls.c:2297