NAME    [Toc]    [Back]

     setgroups - set group access list

LIBRARY    [Toc]    [Back]

     Standard C Library (libc, -lc)

SYNOPSIS    [Toc]    [Back]

     #include <sys/param.h>
     #include <unistd.h>

     int
     setgroups(int ngroups, const gid_t *gidset);

DESCRIPTION    [Toc]    [Back]

     setgroups() sets the group access list of the current user process
     according to the array gidset.  The parameter ngroups indicates the number
 of entries in the array and must be no more than {NGROUPS_MAX}.

     Only the super-user may set new groups.

RETURN VALUES    [Toc]    [Back]

     A 0 value is returned on success, -1 on error, with an error code stored
     in errno.

ERRORS    [Toc]    [Back]

     The setgroups() call will fail if:

     [EINVAL]           The value of ngroups is greater than {NGROUPS_MAX}.

     [EPERM]            The caller is not the super-user.

     [EFAULT]           The address specified for gidset is outside the process
 address space.

SEE ALSO    [Toc]    [Back]

     getgroups(2), initgroups(3)

HISTORY    [Toc]    [Back]

     The setgroups() function call appeared in 4.2BSD.

BSD                             April 16, 1994                             BSD