Man page - group_member(3)

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Manual

group_member

NAME
LIBRARY
SYNOPSIS
DESCRIPTION
RETURN VALUE
STANDARDS
SEE ALSO

NAME

group_member - test whether a process is in a group

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.

SEE ALSO

getgid (2), getgroups (2), getgrouplist (3), group (5)