MirBSD manpage: setgroups(2)

SETGROUPS(2)               BSD Programmer's Manual                SETGROUPS(2)

NAME

     setgroups - set group access list

SYNOPSIS

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

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

DESCRIPTION

     setgroups() sets the group access list of the current user process ac-
     cording 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 superuser may set new groups.

RETURN VALUES

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

ERRORS

     The setgroups() call will fail if:

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

     [EPERM]       The caller is not the superuser.

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

SEE ALSO

     getgroups(2), setgid(2), setregid(2), initgroups(3)

HISTORY

     The setgroups() function call appeared in 4.2BSD.

MirBSD #10-current              April 16, 1994                               1