GETUID(P)						     POSIX Programmer's Manual							 GETUID(P)

NAME

       getuid - get a real user ID

SYNOPSIS

       #include <unistd.h>

       uid_t getuid(void);

DESCRIPTION

       The getuid() function shall return the real user ID of the calling process.

RETURN VALUE

       The getuid() function shall always be successful and no return value is reserved to indicate the error.

ERRORS

       No errors are defined.

       The following sections are informative.

EXAMPLES

   Setting the Effective User ID to the Real User ID
       The following example sets the effective user ID and the real user ID of the current process to the real user ID of the caller.

	      #include <unistd.h>
	      #include <sys/types.h>
	      ...
	      setreuid(getuid(), getuid());
	      ...

APPLICATION USAGE

       None.

RATIONALE

       None.

FUTURE DIRECTIONS

       None.

SEE ALSO

       getegid()  ,  geteuid() , getgid() , setegid() , seteuid() , setgid() , setregid() , setreuid() , setuid() , the Base Definitions volume of
       IEEE Std 1003.1-2001, <sys/types.h>, <unistd.h>

COPYRIGHT

       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technol-
       ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
       Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and  the  original  IEEE
       and  The  Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained
       online at http://www.opengroup.org/unix/online.html .

IEEE
/The Open Group						       2003								 GETUID(P)