GETGID

Section: Linux Programmer's Manual (2)
Updated: 2017-09-15
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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.  

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 4.13 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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Index

NAME

SYNOPSIS

DESCRIPTION

ERRORS

CONFORMING TO

NOTES

SEE ALSO

COLOPHON