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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  gete-
       gid32(), supporting 32-bit IDs.  The glibc getgid() and getegid() wrap-
       per functions transparently deal with the variations across kernel ver-
       sions.
SEE ALSO
       getresgid(2), setgid(2), setregid(2), credentials(7)
COLOPHON
       This  page  is  part of release 3.53 of the Linux man-pages project.  A
       description of the project, and information about reporting  bugs,  can
       be found at http://www.kernel.org/doc/man-pages/.

Linux                             2010-11-22                         GETGID(2)