runtime/platform/setenv.putenv.c

   1 /* This implementation of setenv has a space leak, but I don't see how to avoid
   2  * it, since the specification of putenv is that it uses the memory for its arg.
   3  */
   4 int setenv (const char *name, const char *value, int overwrite) {
   5         size_t len;
   6         char *b;
   7
   8         if (!overwrite && getenv (name))
   9                 return 0;
  10
  11         len = strlen (name) + strlen (value) + 2 /* = and \000 */;
  12         b = malloc (len);
  13         snprintf (b, len, "%s=%s", name, value);
  14         return putenv (b);
  15 }