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

NAME         top

       group_member - test whether a process is in a group

SYNOPSIS         top

       #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         top

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

RETURN VALUE         top

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

CONFORMING TO         top

       This function is a nonstandard GNU extension.

SEE ALSO         top

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

COLOPHON         top

       This page is part of release 4.12 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                              2014-03-30                  GROUP_MEMBER(3)

Pages that refer to this page: getgroups(2),  getgrouplist(3)