1 /* Header for environment manipulation library. 2 Copyright (C) 1989, 1992, 2000, 2005, 2007, 2008, 2009 3 Free Software Foundation, Inc. 4 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. 9 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. 14 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/>. */ 17 18 #if !defined (ENVIRON_H) 19 #define ENVIRON_H 1 20 21 /* We manipulate environments represented as these structures. */ 22 23 struct gdb_environ 24 { 25 /* Number of usable slots allocated in VECTOR. 26 VECTOR always has one slot not counted here, 27 to hold the terminating zero. */ 28 int allocated; 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. */ 33 char **vector; 34 }; 35 36 extern struct gdb_environ *make_environ (void); 37 38 extern void free_environ (struct gdb_environ *); 39 40 extern void init_environ (struct gdb_environ *); 41 42 extern char *get_in_environ (const struct gdb_environ *, const char *); 43 44 extern void set_in_environ (struct gdb_environ *, const char *, const char *); 45 46 extern void unset_in_environ (struct gdb_environ *, char *); 47 48 extern char **environ_vector (struct gdb_environ *); 49 50 #endif /* defined (ENVIRON_H) */ 51