group_member

GROUP_MEMBER(3)             Linux Programmer's Manual            GROUP_MEMBER(3)



NAME
       group_member - test whether a process is in a group

SYNOPSIS
       #include <unistd.h>

       int group_member(gid_t gid);

   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 5.12 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/.



GNU                                2021-03-22                    GROUP_MEMBER(3)