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t_pr.c revision 1.4 
      1 /*	$NetBSD: t_pr.c,v 1.4 2010/07/03 12:08:37 pooka Exp $	*/
      2 
      3 #include <sys/types.h>
      4 #include <sys/mount.h>
      5 
      6 #include <atf-c.h>
      7 #include <err.h>
      8 #include <errno.h>
      9 #include <fcntl.h>
     10 #include <stdio.h>
     11 #include <unistd.h>
     12 #include <string.h>
     13 #include <stdlib.h>
     14 
     15 #include <rump/rump.h>
     16 #include <rump/rump_syscalls.h>
     17 
     18 #include <miscfs/union/union.h>
     19 #include <ufs/ufs/ufsmount.h>
     20 
     21 #include "../../h_macros.h"
     22 
     23 ATF_TC(multilayer);
     24 ATF_TC_HEAD(multilayer, tc)
     25 {
     26 	atf_tc_set_md_var(tc, "descr", "mount_union -b twice");
     27 	atf_tc_set_md_var(tc, "use.fs", "true");
     28 }
     29 
     30 #define IMG1 "atf1.img"
     31 #define DEV1 "/dev/fs1"
     32 #define newfs_base "newfs -F -s 10000 "
     33 
     34 ATF_TC_BODY(multilayer, tc)
     35 {
     36 	struct ufs_args args;
     37 	struct union_args unionargs;
     38 
     39 	if (system(newfs_base IMG1) == -1)
     40 		atf_tc_fail_errno("create img1");
     41 
     42 	rump_init();
     43         rump_pub_etfs_register(DEV1, IMG1, RUMP_ETFS_BLK);
     44 
     45 	memset(&args, 0, sizeof(args));
     46 	args.fspec = __UNCONST(DEV1);
     47 	if (rump_sys_mount(MOUNT_FFS, "/", 0, &args, sizeof(args)) == -1)
     48 		atf_tc_fail_errno("could not mount root");
     49 
     50 	if (rump_sys_mkdir("/Tunion", 0777) == -1)
     51 		atf_tc_fail_errno("mkdir mp1");
     52 	if (rump_sys_mkdir("/Tunion2", 0777) == -1)
     53 		atf_tc_fail_errno("mkdir mp2");
     54 	if (rump_sys_mkdir("/Tunion2/A", 0777) == -1)
     55 		atf_tc_fail_errno("mkdir A");
     56 	if (rump_sys_mkdir("/Tunion2/B", 0777) == -1)
     57 		atf_tc_fail_errno("mkdir B");
     58 
     59 	unionargs.target = __UNCONST("/Tunion2/A");
     60 	unionargs.mntflags = UNMNT_BELOW;
     61 
     62 	if (rump_sys_mount(MOUNT_UNION, "/Tunion", 0,
     63 	    &unionargs, sizeof(unionargs)) == -1)
     64 		atf_tc_fail_errno("union mount");
     65 
     66 	unionargs.target = __UNCONST("/Tunion2/B");
     67 	unionargs.mntflags = UNMNT_BELOW;
     68 
     69 	/* BADABOOM */
     70 	/* atf_tc_expect_signal(-1, "PR kern/23986"); */
     71 	rump_sys_mount(MOUNT_UNION, "/Tunion", 0,&unionargs,sizeof(unionargs));
     72 }
     73 
     74 ATF_TC(devnull1);
     75 ATF_TC_HEAD(devnull1, tc)
     76 {
     77 	atf_tc_set_md_var(tc, "descr", "mount_union -b and "
     78 	    "'echo x > /un/null'");
     79 }
     80 
     81 ATF_TC_BODY(devnull1, tc)
     82 {
     83 	struct union_args unionargs;
     84 	int fd;
     85 
     86 	rump_init();
     87 
     88 	if (rump_sys_mkdir("/mp", 0777) == -1)
     89 		atf_tc_fail_errno("mkdir mp");
     90 
     91 	unionargs.target = __UNCONST("/dev");
     92 	unionargs.mntflags = UNMNT_BELOW;
     93 
     94 	if (rump_sys_mount(MOUNT_UNION, "/mp", 0,
     95 	    &unionargs, sizeof(unionargs)) == -1)
     96 		atf_tc_fail_errno("union mount");
     97 
     98 	fd = rump_sys_open("/mp/null", O_WRONLY | O_CREAT | O_TRUNC);
     99 
    100 	atf_tc_expect_fail("PR kern/43560");
    101 	if (fd == -1)
    102 		atf_tc_fail_errno("open");
    103 }
    104 
    105 ATF_TC(devnull2);
    106 ATF_TC_HEAD(devnull2, tc)
    107 {
    108 	atf_tc_set_md_var(tc, "descr", "mount_union -b and "
    109 	    "'echo x >> /un/null'");
    110 }
    111 
    112 ATF_TC_BODY(devnull2, tc)
    113 {
    114 	struct union_args unionargs;
    115 	int fd;
    116 
    117 	rump_init();
    118 
    119 	if (rump_sys_mkdir("/mp", 0777) == -1)
    120 		atf_tc_fail_errno("mkdir mp");
    121 
    122 	unionargs.target = __UNCONST("/dev");
    123 	unionargs.mntflags = UNMNT_BELOW;
    124 
    125 	if (rump_sys_mount(MOUNT_UNION, "/mp", 0,
    126 	    &unionargs, sizeof(unionargs)) == -1)
    127 		atf_tc_fail_errno("union mount");
    128 
    129 	fd = rump_sys_open("/mp/null", O_WRONLY | O_CREAT | O_APPEND);
    130 	if (fd == -1)
    131 		atf_tc_fail_errno("open");
    132 
    133 	atf_tc_expect_signal(-1, "PR kern/43560");
    134 	rump_sys_write(fd, &fd, sizeof(fd));
    135 }
    136 
    137 ATF_TP_ADD_TCS(tp)
    138 {
    139 	ATF_TP_ADD_TC(tp, multilayer);
    140 	ATF_TP_ADD_TC(tp, devnull1);
    141 	ATF_TP_ADD_TC(tp, devnull2);
    142 
    143 	return atf_no_error();
    144 }
    145