| /* Header for environment manipulation library. |
| Copyright 1989, 1992 Free Software Foundation. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or |
| (at your option) any later version. |
| |
| This program 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 General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. */ |
| |
| #if !defined (ENVIRON_H) |
| #define ENVIRON_H 1 |
| |
| /* We manipulate environments represented as these structures. */ |
| |
| struct environ |
| { |
| /* Number of usable slots allocated in VECTOR. |
| VECTOR always has one slot not counted here, |
| to hold the terminating zero. */ |
| int allocated; |
| /* A vector of slots, ALLOCATED + 1 of them. |
| The first few slots contain strings "VAR=VALUE" |
| and the next one contains zero. |
| Then come some unused slots. */ |
| char **vector; |
| }; |
| |
| extern struct environ * |
| make_environ PARAMS ((void)); |
| |
| extern void |
| free_environ PARAMS ((struct environ *)); |
| |
| extern void |
| init_environ PARAMS ((struct environ *)); |
| |
| extern char * |
| get_in_environ PARAMS ((const struct environ *, const char *)); |
| |
| extern void |
| set_in_environ PARAMS ((struct environ *, const char *, |
| const char *)); |
| |
| extern void |
| unset_in_environ PARAMS ((struct environ *, char *)); |
| |
| extern char ** |
| environ_vector PARAMS ((struct environ *)); |
| |
| #endif /* defined (ENVIRON_H) */ |