1 /* Header for environment manipulation library. 2 Copyright (C) 1989-2013 Free Software Foundation, Inc. 3 4 This program is free software; you can redistribute it and/or modify 5 it under the terms of the GNU General Public License as published by 6 the Free Software Foundation; either version 3 of the License, or 7 (at your option) any later version. 8 9 This program is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 GNU General Public License for more details. 13 14 You should have received a copy of the GNU General Public License 15 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 16 17 #if !defined (ENVIRON_H) 18 #define ENVIRON_H 1 19 20 /* We manipulate environments represented as these structures. */ 21 22 struct gdb_environ 23 { 24 /* Number of usable slots allocated in VECTOR. 25 VECTOR always has one slot not counted here, 26 to hold the terminating zero. */ 27 int allocated; 28 /* A vector of slots, ALLOCATED + 1 of them. 29 The first few slots contain strings "VAR=VALUE" 30 and the next one contains zero. 31 Then come some unused slots. */ 32 char **vector; 33 }; 34 35 extern struct gdb_environ *make_environ (void); 36 37 extern void free_environ (struct gdb_environ *); 38 39 extern void init_environ (struct gdb_environ *); 40 41 extern char *get_in_environ (const struct gdb_environ *, const char *); 42 43 extern void set_in_environ (struct gdb_environ *, const char *, const char *); 44 45 extern void unset_in_environ (struct gdb_environ *, char *); 46 47 extern char **environ_vector (struct gdb_environ *); 48 49 #endif /* defined (ENVIRON_H) */ 50