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)

Information

Source
Linux kernel
OS/version
GNU
Source updated
March 30, 2014
Page created
February 9, 2018
Page generated
December 2, 2018