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:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |Async-Signal-Safe 	   |
       +-----------------------------+-----------------------------+

SEE ALSO

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

SunOS 5.10							    28 Dec 1996 							 getuid(2)