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- /* 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., 675 Mass Ave, Cambridge, MA 02139, 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) */
-