Man Pages

getuid(3p) - phpMan getuid(3p) - phpMan

Command: man perldoc info search(apropos)  


GETUID(3P)                 POSIX Programmer's Manual                GETUID(3P)



PROLOG
       This manual page is part of the POSIX Programmer's Manual.  The Linux implementation of this interface may dif-
       fer (consult the corresponding Linux manual page for details of Linux behavior), or the interface  may  not  be
       implemented on Linux.

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 Def-
       initions 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, Stan-
       dard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base  Specifica-
       tions  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 Stan-
       dard,  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(3P)