Name

group_member — test whether a process is in a group

Synopsis

        #include <unistd.h>
int group_member( gid_t gid);
 
[Note] Note
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
group_member():
_GNU_SOURCE

DESCRIPTION

The group_member() function tests whether any of the caller's supplementary group IDs (as returned by getgroups(2)) matches gid.

RETURN VALUE

The group_member() function returns nonzero if any of the caller's supplementary group IDs matches gid, and zero otherwise.

CONFORMING TO

This function is a nonstandard GNU extension.

SEE ALSO

getgid(2), getgroups(2), getgrouplist(3), group(5)

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/.


  Copyright (C) 2014, Michael Kerrisk <mtk.manpagesgmail.com>

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