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/* 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., 675 Mass Ave, Cambridge, MA 02139, 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) */
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