NAME

getgid, getegid − get group identity

SYNTAX

gid = getgid()
int gid;

egid = getegid()
int egid;

DESCRIPTION

The getgid system call returns the real group ID of the current process, getegid the effective group ID.

The real group ID is specified at login time. 

The effective group ID is more transient, and determines additional access permission during execution of a “set-group-ID” process, and it is for such processes that getgid is most useful.

ENVIRONMENT

Differs from the System V definition in that the return values are ints instead of unsigned shorts. 

SEE ALSO

getuid(2), setregid(2), setgid(3)

System Calls