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/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 1997-2006
* Oracle Corporation. All rights reserved.
*
* $Id: os_unlink.c,v 12.8 2006/08/24 14:46:18 bostic Exp $
*/
#include "db_config.h"
#include "db_int.h"
/*
* __os_region_unlink --
* Remove a shared memory object file.
*
* PUBLIC: int __os_region_unlink __P((DB_ENV *, const char *));
*/
int
__os_region_unlink(dbenv, path)
DB_ENV *dbenv;
const char *path;
{
#ifdef HAVE_QNX
int ret;
char *newname;
if ((ret = __os_shmname(dbenv, path, &newname)) != 0)
goto err;
if ((ret = shm_unlink(newname)) != 0) {
ret = __os_get_syserr();
if (__os_posix_err(ret) != ENOENT)
__db_syserr(dbenv, ret, "shm_unlink: %s", newname);
}
err:
if (newname != NULL)
__os_free(dbenv, newname);
return (ret);
#else
if (F_ISSET(dbenv, DB_ENV_OVERWRITE))
(void)__db_file_multi_write(dbenv, path);
return (__os_unlink(dbenv, path));
#endif
}
/*
* __os_unlink --
* Remove a file.
*
* PUBLIC: int __os_unlink __P((DB_ENV *, const char *));
*/
int
__os_unlink(dbenv, path)
DB_ENV *dbenv;
const char *path;
{
int ret, t_ret;
if (DB_GLOBAL(j_unlink) != NULL)
ret = DB_GLOBAL(j_unlink)(path);
else
#ifdef HAVE_VXWORKS
RETRY_CHK((unlink((char *)path)), ret);
#else
RETRY_CHK((unlink(path)), ret);
#endif
/*
* !!!
* The results of unlink are file system driver specific on VxWorks.
* In the case of removing a file that did not exist, some, at least,
* return an error, but with an errno of 0, not ENOENT. We do not
* have to test for the explicitly, the RETRY_CHK macro resets "ret"
* to be the errno, and so we'll just slide right on through.
*
* XXX
* We shouldn't be testing for an errno of ENOENT here, but ENOENT
* signals that a file is missing, and we attempt to unlink things
* (such as v. 2.x environment regions, in DB_ENV->remove) that we
* are expecting not to be there. Reporting errors in these cases
* is annoying.
*/
if (ret != 0) {
t_ret = __os_posix_err(ret);
if (t_ret != ENOENT)
__db_syserr(dbenv, ret, "unlink: %s", path);
ret = t_ret;
}
return (ret);
}
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