/*      $NetBSD: t_full.c,v 1.11 2019/07/16 17:29:17 martin Exp $       */

/*-
 * Copyright (c) 2010 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include <sys/stat.h>
#include <sys/statvfs.h>

#include <atf-c.h>
#include <fcntl.h>
#include <libgen.h>
#include <stdlib.h>
#include <unistd.h>

#include <rump/rump_syscalls.h>
#include <rump/rump.h>

#include "../common/h_fsmacros.h"
#include "h_macros.h"

/*
 * Write this much over the image size.  This is to force an NFS commit,
 * since we might just stuff data into the cache and miss the problem.
 */
#define NFSBONUS (1<<16)

static void
fillfs(const atf_tc_t *tc, const char *mp)
{
        char buf[8192];
        size_t written;
        ssize_t n = 0; /* xxxgcc */
        size_t bonus;
        int fd, i = 0;

        if (FSTYPE_P2K_FFS(tc) || FSTYPE_PUFFS(tc) || FSTYPE_RUMPFS(tc) ||
            FSTYPE_ZFS(tc)) {
                atf_tc_skip("fs does not support explicit block allocation "
                    "(GOP_ALLOC)");
        }

        bonus = 0;
        if (FSTYPE_NFS(tc))
                bonus = NFSBONUS;

        if (rump_sys_chdir(mp) == -1)
                atf_tc_fail_errno("chdir mountpoint");
        fd = rump_sys_open("afile", O_CREAT | O_RDWR, 0600);
        if (fd == -1)
                atf_tc_fail_errno("create file");

        for (written = 0; written < FSTEST_IMGSIZE + bonus; written +=n) {
                memset(buf, i++, sizeof(buf)); /* known garbage */
                n = rump_sys_write(fd, buf, sizeof(buf));
                if (n == -1)
                        break;
        }
        if (n == -1) {
                if (errno != ENOSPC)
                        atf_tc_fail_errno("write");
        } else {
                atf_tc_fail("filled file system over size limit");
        }

        rump_sys_close(fd);
        rump_sys_chdir("/");
}

ATF_TC_FSAPPLY(fillfs, "fills file system, expects ENOSPC");

ATF_TP_ADD_TCS(tp)
{

        ATF_TP_FSAPPLY(fillfs);

        return atf_no_error();
}