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      1 /*	$NetBSD: t_unmount.c,v 1.4 2024/10/02 17:16:32 bad Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2024 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND
     17  * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
     18  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     19  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     20  * IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY
     21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
     23  * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     24  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
     25  * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     26  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
     27  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     28  */
     29 #include <sys/cdefs.h>
     30 __COPYRIGHT("@(#) Copyright (c) 2024\
     31  The NetBSD Foundation, inc. All rights reserved.");
     32 __RCSID("$NetBSD: t_unmount.c,v 1.4 2024/10/02 17:16:32 bad Exp $");
     33 
     34 #include <sys/types.h>
     35 #include <sys/mount.h>
     36 #include <sys/vnode.h>
     37 
     38 #include <rump/rump.h>
     39 #include <rump/rumpvnode_if.h>
     40 #include <rump/rump_syscalls.h>
     41 
     42 #include <fs/tmpfs/tmpfs_args.h>
     43 
     44 #include <atf-c.h>
     45 #include <errno.h>
     46 #include <stdio.h>
     47 
     48 #include "h_macros.h"
     49 
     50 ATF_TC(async);
     51 ATF_TC_HEAD(async, tc)
     52 {
     53 	atf_tc_set_md_var(tc,
     54 	    "descr", "failed unmount of async fs should stay async");
     55 }
     56 
     57 #define MP "/mnt"
     58 
     59 ATF_TC_BODY(async, tc)
     60 {
     61 	struct tmpfs_args args;
     62 	struct vnode *vp;
     63 	extern struct vnode *rumpns_rootvnode;
     64 
     65 	RZ(rump_init());
     66 
     67 	memset(&args, 0, sizeof(args));
     68 	args.ta_version = TMPFS_ARGS_VERSION;
     69 	args.ta_root_mode = 0777;
     70 
     71 	/* create mount point and mount a tmpfs on it */
     72 	RL(rump_sys_mkdir(MP, 0777));
     73 	RL(rump_sys_mount(MOUNT_TMPFS, MP, MNT_ASYNC, &args, sizeof(args)));
     74 
     75 	/* make sure the tmpfs is busy */
     76 	RL(rump_sys_chdir(MP));
     77 
     78 	/* need a stable lwp for componentname */
     79 	RZ(rump_pub_lwproc_rfork(RUMP_RFCFDG));
     80 
     81 	/* get vnode of MP, unlocked */
     82 	RZ(rump_pub_namei(RUMP_NAMEI_LOOKUP, 0, MP, NULL, &vp, NULL));
     83 
     84 	/* make sure we didn't just get the root vnode */
     85 	ATF_REQUIRE_MSG((rumpns_rootvnode != vp), "drat! got the root vnode");
     86 
     87 	printf("mnt_iflag & IMNT_ONWORKLIST == %d\n",
     88 	    (vp->v_mount->mnt_iflag & IMNT_ONWORKLIST) != 0);
     89 
     90 	/* can't unmount a busy file system */
     91 	ATF_REQUIRE_ERRNO(EBUSY, rump_sys_unmount(MP, 0) == -1);
     92 
     93 	printf("mnt_iflag & IMNT_ONWORKLIST == %d\n",
     94 	    (vp->v_mount->mnt_iflag & IMNT_ONWORKLIST) != 0);
     95 
     96 
     97 	ATF_REQUIRE_MSG(((vp->v_mount->mnt_iflag & IMNT_ONWORKLIST) == 0),
     98 	    "mount point on syncer work list");
     99 }
    100 
    101 ATF_TP_ADD_TCS(tp)
    102 {
    103 	ATF_TP_ADD_TC(tp, async);
    104 
    105 	return atf_no_error();
    106 }
    107