getgid32(poll.html) - phpMan

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, POSIX.1-2008, 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 4.15 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
       https://www.kernel.org/doc/man-pages/.
Linux                             2017-09-15                         GETGID(2)