os_unlink.c

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/*-
 * See the file LICENSE for redistribution information.
 *
 * Copyright (c) 1997, 1998, 1999, 2000
 *      Sleepycat Software.  All rights reserved.
 */

#include "config.h"

#ifndef lint
static const char revid[] = "$Id: os__unlink_8c-source.html,v 1.1 2008/06/08 10:21:34 sebdiaz Exp $";
#endif /* not lint */

#ifndef NO_SYSTEM_INCLUDES
#include <sys/types.h>

#include <errno.h>
#include <string.h>
#include <unistd.h>
#endif

#include "db_int.h"
#include "os_jump.h"

/*
 * CDB___os_unlink --
 *      Remove a file.
 *
 * PUBLIC: int CDB___os_unlink __P((DB_ENV *, const char *));
 */
int
CDB___os_unlink(dbenv, path)
        DB_ENV *dbenv;
        const char *path;
{
        int ret;

        ret = CDB___db_jump.j_unlink != NULL ?
            CDB___db_jump.j_unlink(path) : unlink(path);
        if (ret == -1) {
                ret = CDB___os_get_errno();
                /*
                 * 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)
                        CDB___db_err(dbenv, "Unlink: %s: %s", path, strerror(ret));
        }

        return (ret);
}

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