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/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 1997-2002
* Sleepycat Software. All rights reserved.
*/
#include "db_config.h"
#ifndef lint
static const char revid[] = "$Id: os_unlink.c,v 11.24 2002/07/12 18:56:53 bostic Exp $";
#endif /* not lint */
#ifndef NO_SYSTEM_INCLUDES
#include <sys/types.h>
#include <string.h>
#include <unistd.h>
#endif
#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_errno();
if (ret != ENOENT)
__db_err(dbenv, "shm_unlink: %s: %s",
newname, strerror(ret));
}
err:
if (newname != NULL)
__os_free(dbenv, newname);
return (ret);
#else
if (F_ISSET(dbenv, DB_ENV_OVERWRITE))
(void)__db_overwrite(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;
retry: ret = DB_GLOBAL(j_unlink) != NULL ?
DB_GLOBAL(j_unlink)(path) :
#ifdef HAVE_VXWORKS
unlink((char *)path);
#else
unlink(path);
#endif
if (ret == -1) {
if ((ret = __os_get_errno()) == EINTR)
goto retry;
/*
* XXX
* We really shouldn't be looking at this value ourselves,
* but ENOENT usually 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're expecting not to
* be there. Reporting errors in these cases is annoying.
*/
#ifdef HAVE_VXWORKS
/*
* XXX
* 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.
*
* Code below falls through to original if-statement only
* we didn't get a "successful" error.
*/
if (ret != 0)
/* FALLTHROUGH */
#endif
if (ret != ENOENT)
__db_err(dbenv, "unlink: %s: %s", path, strerror(ret));
}
return (ret);
}
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