—
NAME
group_member - test whether a process is in a group
LIBRARY
Standard C library (libc, -lc)
SYNOPSIS
bash
#include <unistd.h>bash
int group_member(gid_t \ngid\n);group_member():
bash
\n
_GNU_SOURCEDESCRIPTION
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.
SEE ALSO
getgid(2), getgroups(2), getgrouplist(3), group(5)