| /* Copyright (C) 1991 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C 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. |
| |
| The GNU C 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 the GNU C Library; see the file COPYING.LIB. If |
| not, write to the Free Software Foundation, Inc., 675 Mass Ave, |
| Cambridge, MA 02139, USA. */ |
| |
| #include <ansidecl.h> |
| #include <stddef.h> |
| #include <stdio.h> |
| #include <grp.h> |
| |
| static FILE *stream = NULL; |
| |
| /* Rewind the stream. */ |
| void |
| DEFUN_VOID(setgrent) |
| { |
| if (stream != NULL) |
| rewind(stream); |
| } |
| |
| |
| /* Close the stream. */ |
| void |
| DEFUN_VOID(endgrent) |
| { |
| if (stream != NULL) |
| { |
| (void) fclose(stream); |
| stream = NULL; |
| } |
| } |
| |
| |
| /* Read an entry from the stream. */ |
| struct group * |
| DEFUN_VOID(getgrent) |
| { |
| static PTR info = NULL; |
| if (info == NULL) |
| { |
| info = __grpalloc(); |
| if (info == NULL) |
| return(NULL); |
| } |
| |
| if (stream == NULL) |
| { |
| stream = __grpopen(); |
| if (stream == NULL) |
| return(NULL); |
| } |
| |
| return(__grpread(stream, info)); |
| } |