[deliverable/binutils-gdb.git] / gdb / environ.h

/* Header for environment manipulation library.
   Copyright (C) 1989, 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 1, 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.  */

/* 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;
};

struct environ *make_environ ();
void free_environ ();
void init_environ ();
char *get_in_environ ();
void set_in_environ ();
void unset_in_environ ();
char **environ_vector ();
Commit	Line	Data
bd5635a1 RP	1	/* Header for environment manipulation library.
	2	Copyright (C) 1989, Free Software Foundation.
	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 1, or (at your option)
	7	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, write to the Free Software
	16	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
	17
	18	/* We manipulate environments represented as these structures. */
	19
	20	struct environ
	21	{
	22	/* Number of usable slots allocated in VECTOR.
	23	VECTOR always has one slot not counted here,
	24	to hold the terminating zero. */
	25	int allocated;
	26	/* A vector of slots, ALLOCATED + 1 of them.
	27	The first few slots contain strings "VAR=VALUE"
	28	and the next one contains zero.
	29	Then come some unused slots. */
	30	char **vector;
	31	};
	32
	33	struct environ *make_environ ();
	34	void free_environ ();
	35	void init_environ ();
	36	char *get_in_environ ();
	37	void set_in_environ ();
	38	void unset_in_environ ();
	39	char **environ_vector ();