[MAN] group_member

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GROUP_MEMBER

Section: Linux Programmer's Manual (3)
Updated: 2014-03-30
Index Return to Main Contents

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NAME

group_member - test whether a process is in a group  

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.  

CONFORMING TO

This function is a nonstandard GNU extension.  

SEE ALSO

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

COLOPHON

This page is part of release 4.15 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.

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Index

NAME

SYNOPSIS

DESCRIPTION

RETURN VALUE

CONFORMING TO

SEE ALSO

COLOPHON

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