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/* Header for environment manipulation library.
Copyright (C) 1989-2015 Free Software Foundation, Inc.
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 3 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, see <http://www.gnu.org/licenses/>. */
#if !defined (ENVIRON_H)
#define ENVIRON_H 1
/* We manipulate environments represented as these structures. */
struct gdb_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 gdb_environ *make_environ (void);
extern void free_environ (struct gdb_environ *);
extern void init_environ (struct gdb_environ *);
extern char *get_in_environ (const struct gdb_environ *, const char *);
extern void set_in_environ (struct gdb_environ *, const char *, const char *);
extern void unset_in_environ (struct gdb_environ *, const char *);
extern char **environ_vector (struct gdb_environ *);
#endif /* defined (ENVIRON_H) */
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