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/*
* $Source$
* $Author$
*
* Copyright 1990 by the Massachusetts Institute of Technology.
* All Rights Reserved.
*
* Export of this software from the United States of America may
* require a specific license from the United States Government.
* It is the responsibility of any person or organization contemplating
* export to obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of M.I.T. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*
*
* This file contains the source code for krb5_scc_destroy.
*/
#if !defined(lint) && !defined(SABER)
static char rcsid_scc_destry_c[] =
"$Id$";
#endif /* !lint && !SABER */
#include "scc.h"
#ifndef SEEK_SET
#define SEEK_SET 0
#endif
/*
* Effects:
* Destroys the contents of id.
*
* Errors:
* system errors
*/
krb5_error_code krb5_scc_destroy(id)
krb5_ccache id;
{
#if 0
unsigned long size;
char zeros[BUFSIZ];
#endif
krb5_scc_data *data = (krb5_scc_data *) id->data;
register int ret;
if (!OPENCLOSE(id)) {
(void) fclose(data->file);
data->file = 0;
}
ret = remove (data->filename);
if (ret < 0) {
ret = krb5_scc_interpret(errno);
if (OPENCLOSE(id)) {
(void) fclose(data->file);
data->file = 0;
}
return ret;
}
#if 0
/*
* Possible future extension: Read entire file to determine
* length, then write nulls all over it. This was the UNIX
* version...
*/
ret = fstat(fileno(data->file), &buf);
if (ret < 0) {
ret = krb5_scc_interpret(errno);
if (OPENCLOSE(id)) {
(void) fclose(data->file);
data->file = 0;
}
return ret;
}
/* XXX This may not be legal XXX */
size = (unsigned long) buf.st_size;
memset (zeros, 0, BUFSIZ);
for (i=0; i < size / BUFSIZ; i++)
if (fwrite(data->file, zeros, BUFSIZ) < 0) {
ret = krb5_scc_interpret(errno);
if (OPENCLOSE(id)) {
(void) fclose(data->file);
data->file = 0;
}
return ret;
}
if (fwrite(data->file, zeros, size % BUFSIZ) < 0) {
ret = krb5_scc_interpret(errno);
if (OPENCLOSE(id)) {
(void) fclose(data->file);
data->file = 0;
}
return ret;
}
ret = fclose(data->file);
data->file = 0;
#endif
if (ret)
ret = krb5_scc_interpret(errno);
return ret;
}
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