group_member man page

group_member — test whether a process is in a group


#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.

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)

Referenced By

getgrouplist(3), getgroups(2).

Explore man page connections for group_member(3).