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GETUID(2)		   Linux Programmer's Manual		     GETUID(2)

NAME
       getuid, geteuid - get user identity

SYNOPSIS
       #include	<unistd.h>
       #include	<sys/types.h>

       uid_t getuid(void);
       uid_t geteuid(void);

DESCRIPTION
       getuid()	returns	the real user ID of the	calling	process.

       geteuid() returns the effective user ID of the calling process.

ERRORS
       These functions are always successful.

CONFORMING TO
       POSIX.1-2001, 4.3BSD.

NOTES
   History
       In  UNIX	V6  the	getuid() call returned (euid __	8) + uid.  UNIX	V7 in-
       troduced	separate calls getuid()	and geteuid().

       The original Linux getuid() and geteuid() system	calls  supported  only
       16-bit  user  IDs.   Subsequently,  Linux  2.4 added getuid32() and ge-
       teuid32(), supporting 32-bit IDs.  The  glibc  getuid()	and  geteuid()
       wrapper	functions transparently	deal with the variations across	kernel
       versions.

SEE ALSO
       getresuid(2), setreuid(2), setuid(2), credentials(7)

COLOPHON
       This page is part of release 3.74 of the	Linux  man-pages  project.   A
       description  of	the project, information about reporting bugs, and the
       latest	 version    of	  this	  page,	   can	   be	  found	    at
       http://www.kernel.org/doc/man-pages/.

Linux				  2010-11-22			     GETUID(2)

NAME | SYNOPSIS | DESCRIPTION | ERRORS | CONFORMING TO | NOTES | SEE ALSO | COLOPHON

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