/* * fgetgrent.c - This file is part of the libc-8086/grp package for ELKS, * Copyright (C) 1995, 1996 Nat Friedman <ndf@linux.mit.edu>. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the Free * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * */ #include <stdio.h> #include <errno.h> #include "config.h" #ifdef __UCLIBC_HAS_THREADS__ #include <pthread.h> extern pthread_mutex_t __getgrent_lock; # define LOCK pthread_mutex_lock(&__getgrent_lock) # define UNLOCK pthread_mutex_unlock(&__getgrent_lock); #else # define LOCK # define UNLOCK #endif static char *line_buff = NULL; static char **members = NULL; struct group *fgetgrent(FILE * file) { struct group *grp; if (file == NULL) { __set_errno(EINTR); return NULL; } LOCK; grp = __getgrent(fileno(file), line_buff, members); UNLOCK; return grp; }