getegid(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
   getegid32(),  supporting  32-bit IDs.  The glibc getgid() and getegid()
   wrapper functions transparently deal with the variations across  kernel
   versions.

SEE ALSO

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

COLOPHON

   This  page  is  part of release 4.09 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/.

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