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/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 1997-2009 Oracle. All rights reserved.
*
* $Id$
*/
#include "db_config.h"
#include "db_int.h"
/*
* __os_getenv --
* Retrieve an environment variable.
*
* PUBLIC: int __os_getenv __P((ENV *, const char *, char **, size_t));
*/
int
__os_getenv(env, name, bpp, buflen)
ENV *env;
const char *name;
char **bpp;
size_t buflen;
{
/*
* If we have getenv, there's a value and the buffer is large enough:
* copy value into the pointer, return 0
* If we have getenv, there's a value and the buffer is too short:
* set pointer to NULL, return EINVAL
* If we have getenv and there's no value:
* set pointer to NULL, return 0
* If we don't have getenv:
* set pointer to NULL, return 0
*/
#ifdef HAVE_GETENV
char *p;
if ((p = getenv(name)) != NULL) {
if (strlen(p) < buflen) {
(void)strcpy(*bpp, p);
return (0);
}
*bpp = NULL;
__db_errx(env,
"%s: buffer too small to hold environment variable %s",
name, p);
return (EINVAL);
}
#else
COMPQUIET(env, NULL);
COMPQUIET(name, NULL);
COMPQUIET(buflen, 0);
#endif
*bpp = NULL;
return (0);
}
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