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group_member

Section: C Library Functions (3)
Updated: 202-0-08
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group_member - test whether a process is in a group

Standard C library (libc,~-lc)

#include <unistd.h>
int group_member(gid_t gid);

Feature Test Macro Requirements for glibc (see feature_test_macros(7)): group_member():

    _GNU_SOURCE

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

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

GNU.