newlib/libc/stdlib/setenv.c

   1 /*
   2  * Copyright (c) 1987 Regents of the University of California.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms are permitted
   6  * provided that: (1) source distributions retain this entire copyright
   7  * notice and comment, and (2) distributions including binaries display
   8  * the following acknowledgement:  ``This product includes software
   9  * developed by the University of California, Berkeley and its contributors''
  10  * in the documentation or other materials provided with the distribution.
  11  * Neither the name of the University nor the names of its
  12  * contributors may be used to endorse or promote products derived
  13  * from this software without specific prior written permission.
  14  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
  15  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
  16  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  17  */
  18
  19 #ifndef _REENT_ONLY
  20
  21 #include <stddef.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24
  25 extern int _unsetenv_r (struct _reent *, const char *);
  26
  27 /*
  28  * setenv --
  29  *      Set the value of the environmental variable "name" to be
  30  *      "value".  If rewrite is set, replace any current value.
  31  */
  32
  33 int
  34 setenv (const char *name,
  35         const char *value,
  36         int rewrite)
  37 {
  38   return _setenv_r (_REENT, name, value, rewrite);
  39 }
  40
  41 /*
  42  * unsetenv(name) --
  43  *      Delete environmental variable "name".
  44  */
  45 int
  46 unsetenv (const char *name)
  47 {
  48   return _unsetenv_r (_REENT, name);
  49 }
  50
  51 #endif /* !_REENT_ONLY */