GETUID(2) BSD System Calls Manual GETUID(2)

NAME
     ggeetteeuuiidd, ggeettuuiidd - get user identification

SYNOPSIS
     ##iinncclluuddee <>

     uidt
     ggeetteeuuiidd(void);

     uidt
     ggeettuuiidd(void);

DESCRIPTION
     The ggeettuuiidd() function returns the real user ID of the calling process.
     The ggeetteeuuiidd() function returns the effective user ID of the calling
     process.

     The real user ID is that of the user who has invoked the program.  As the
     effective user ID gives the process additional permissions during execu-
     tion of ``set-user-ID'' mode processes, ggeettuuiidd() is used to determine the
     real-user-id of the calling process.

EERRRROORRSS
     The ggeettuuiidd() and ggeetteeuuiidd() functions are always successful, and no return
     value is reserved to indicate an error.

LEGACY SYNOPSIS
     ##iinncclluuddee <>
     ##iinncclluuddee <>

     The include file  is necessary for both functions.

SEE ALSO
     getgid(2), setreuid(2), compat(5)

STANDARDS
     GGeetteeuuiidd() and ggeettuuiidd() functions conform to IEEE Std 1003.1-1988
     (``POSIX.1'').

4th Berkeley Distribution        June 4, 1993        4th Berkeley Distribution