60 lines
1.8 KiB
C
60 lines
1.8 KiB
C
/* 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) */
|