1. 根目录:
2. include
3. linux
4. uts.h

#ifndef _LINUX_UTS_H
#define _LINUX_UTS_H

/*
 * Defines for what uname() should return 
 */
#ifndef UTS_SYSNAME
#define UTS_SYSNAME "Linux"
#endif

#ifndef UTS_NODENAME
#define UTS_NODENAME "(none)"	/* set by sethostname() */
#endif

#ifndef UTS_DOMAINNAME
#define UTS_DOMAINNAME "(none)"	/* set by setdomainname() */
#endif

#endif