getuid(2) [v7 man page]

GETUID(2)							System Calls Manual							 GETUID(2)

NAME

       getuid, getgid, geteuid, getegid - get user and group identity

SYNOPSIS

       getuid( )

       geteuid( )

       getgid( )

       getegid( )

DESCRIPTION

       Getuid  returns	the  real  user  ID  of the current process, geteuid the effective user ID.  The real user ID identifies the person who is
       logged in, in contradistinction to the effective user ID, which determines his access permission at the moment.	It is thus useful to  pro-
       grams which operate using the `set user ID' mode, to find out who invoked them.

       Getgid returns the real group ID, getegid the effective group ID.

SEE ALSO

       setuid(2)

ASSEMBLER

       (getuid = 24.)
       sys getuid
       (real user ID in r0, effective user ID in r1)

       (getgid = 47.)
       sys getgid
       (real group ID in r0, effective group ID in r1)

																	 GETUID(2)

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 5.11							    28 Dec 1996 							 getuid(2)