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getuid(2)                        System Calls                        getuid(2)



NAME
       getuid,  geteuid, getgid, getegid - get real user, effective user, real
       group, and effective group IDs

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

       uid_t getuid(void);

       uid_t geteuid(void);

       gid_t getgid(void);

       gid_t getegid(void);

DESCRIPTION
       The getuid() function returns the real user ID of the calling  process.
       The real user ID identifies the person who is logged in.

       The  geteuid()  function  returns  the effective user ID of the calling
       process. The effective user ID gives the  process  various  permissions
       during execution of "set-user-ID" mode processes which use  getuid() to
       determine the real user ID of the process that invoked them.

       The getgid() function returns the real group ID of the calling process.

       The getegid() function returns the effective group ID  of  the  calling
       process.

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:


       tab()     allbox;     cw(2.750000i)|    cw(2.750000i)    lw(2.750000i)|
       lw(2.750000i).  ATTRIBUTE TYPEATTRIBUTE VALUE Interface  StabilityStan-
       dard MT-LevelAsync-Signal-Safe


SEE ALSO
       intro(2), setuid(2), attributes(5), standards(5)




SunOS 5.10                        28 Dec 1996                        getuid(2)