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



NAME
       getgid, getegid - get group identity

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

       gid_t getgid(void);
       gid_t getegid(void);

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

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

ERRORS
       These functions are always successful.

CONFORMING TO
       POSIX.1-2001, 4.3BSD.

NOTES
       The  original  Linux  getgid() and getegid() system calls supported only 16-bit group IDs.
       Subsequently, Linux 2.4 added getgid32() and  getegid32(),  supporting  32-bit  IDs.   The
       glibc  getgid()  and  getegid()  wrapper  functions transparently deal with the variations
       across kernel versions.

SEE ALSO
       getresgid(2), setgid(2), setregid(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                                  GETGID(2)