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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.

       When  a  normal program is executed, the effective and real group ID of
       the process are set to the group ID of the  user  executing  the  file.
       When a set ID program is executed the real group ID is set to the group
       of the calling user and the effective user ID corresponds  to  the  set
       group ID bit on the file being executed.

ERRORS

       These functions are always successful.

CONFORMING TO

       POSIX.1-2001, 4.3BSD

SEE ALSO

       getresgid(2), setgid(2), setregid(2), credentials(7)

COLOPHON

       This  page  is  part of release 3.01 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/.