group_member
test whether a process is in a group
- Provided by: manpages-dev (Version: 6.9.1-1)
- Source: manpages
- Report a bug
LIBRARY
Standard C library (libc, -lc)
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.
STANDARDS
GNU.