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40 lines
1.4 KiB
C
40 lines
1.4 KiB
C
/* Header for environment manipulation library.
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Copyright (C) 1989, Free Software Foundation.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 1, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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/* We manipulate environments represented as these structures. */
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struct environ
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{
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/* Number of usable slots allocated in VECTOR.
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VECTOR always has one slot not counted here,
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to hold the terminating zero. */
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int allocated;
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/* A vector of slots, ALLOCATED + 1 of them.
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The first few slots contain strings "VAR=VALUE"
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and the next one contains zero.
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Then come some unused slots. */
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char **vector;
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};
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struct environ *make_environ ();
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void free_environ ();
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void init_environ ();
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char *get_in_environ ();
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void set_in_environ ();
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void unset_in_environ ();
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char **environ_vector ();
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