U

ucred_getlabel() routine

declarationAccessing the Process Sensitivity Label

uid fieldData Types for X11

upgrading labels

guidelinesPrivileged Operations and Labels

privileges neededPrivileged Operations and Labels

Trusted X Window SystemPrivileged Operations and the Trusted X Window System

user IDs

obtaining on windowSetting a Window Label

obtaining on workstationObtaining the X Window Server Workstation Owner ID