group_member(3) — Linux manual page

group_member(3)         Library Functions Manual         group_member(3)

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)

COLOPHON

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Linux man-pages 6.9.1          2024-05-02                group_member(3)

Pages that refer to this page: getgroups(2), getgrouplist(3)

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