1 /* Header for environment manipulation library.
2 Copyright (C) 1989, 1992, 2000, 2005, 2007, 2008
3 Free Software Foundation, Inc.
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 3 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>. */
18 #if !defined (ENVIRON_H)
21 /* We manipulate environments represented as these structures. */
25 /* Number of usable slots allocated in VECTOR.
26 VECTOR always has one slot not counted here,
27 to hold the terminating zero. */
29 /* A vector of slots, ALLOCATED + 1 of them.
30 The first few slots contain strings "VAR=VALUE"
31 and the next one contains zero.
32 Then come some unused slots. */
36 extern struct gdb_environ
*make_environ (void);
38 extern void free_environ (struct gdb_environ
*);
40 extern void init_environ (struct gdb_environ
*);
42 extern char *get_in_environ (const struct gdb_environ
*, const char *);
44 extern void set_in_environ (struct gdb_environ
*, const char *, const char *);
46 extern void unset_in_environ (struct gdb_environ
*, char *);
48 extern char **environ_vector (struct gdb_environ
*);
50 #endif /* defined (ENVIRON_H) */
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