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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, 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 4.16 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)