compiler/posixc/setenv.c

   1 /*
   2     Copyright © 1995-2012, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     POSIX.1-2008 function setenv().
   6 */
   7
   8 #include <proto/dos.h>
   9 #include <dos/var.h>
  10
  11 /*****************************************************************************
  12
  13     NAME */
  14 #include <stdlib.h>
  15
  16         int setenv (
  17
  18 /*  SYNOPSIS */
  19         const char *name,
  20         const char *value,
  21         int         overwrite)
  22 /*  FUNCTION
  23         Change or add an environment variable.
  24
  25     INPUTS
  26         name      - Name of the environment variable,
  27         value     - Value wich the variable must be set or changed to.
  28         overwrite - If non-zero then, if a variable with the name name already
  29                     exists, its value is changet to value, otherwise is not
  30                     changed
  31
  32     RESULT
  33         Returns zero on success, or -1 if there was insufficient
  34         space in the environment.
  35
  36     NOTES
  37         This function must not be used in a shared library.
  38
  39     EXAMPLE
  40
  41     BUGS
  42
  43     SEE ALSO
  44
  45     INTERNALS
  46
  47 ******************************************************************************/
  48 {
  49     if (!overwrite && FindVar(name, LV_VAR))
  50         return 0;
  51
  52     return -!SetVar(name, value, -1, LV_VAR | GVF_LOCAL_ONLY);
  53 } /* setenv */
  54