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60 lines
1.8 KiB
C
60 lines
1.8 KiB
C
/* Header for environment manipulation library.
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Copyright 1989, 1992 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 2 of the License, or
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(at your option) 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., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#if !defined (ENVIRON_H)
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#define ENVIRON_H 1
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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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extern struct environ *
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make_environ PARAMS ((void));
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extern void
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free_environ PARAMS ((struct environ *));
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extern void
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init_environ PARAMS ((struct environ *));
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extern char *
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get_in_environ PARAMS ((const struct environ *, const char *));
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extern void
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set_in_environ PARAMS ((struct environ *, const char *,
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const char *));
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extern void
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unset_in_environ PARAMS ((struct environ *, char *));
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extern char **
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environ_vector PARAMS ((struct environ *));
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#endif /* defined (ENVIRON_H) */
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