tests/fs/union/t_pr.c

   1 /*      $NetBSD: t_pr.c,v 1.8 2011/08/10 06:27:02 hannken 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
  20 #include "../../h_macros.h"
  21
  22 ATF_TC(multilayer);
  23 ATF_TC_HEAD(multilayer, tc)
  24 {
  25         atf_tc_set_md_var(tc, "descr", "mount_union -b twice");
  26 }
  27
  28 ATF_TC_BODY(multilayer, tc)
  29 {
  30         struct union_args unionargs;
  31
  32         rump_init();
  33
  34         if (rump_sys_mkdir("/Tunion", 0777) == -1)
  35                 atf_tc_fail_errno("mkdir mp1");
  36         if (rump_sys_mkdir("/Tunion2", 0777) == -1)
  37                 atf_tc_fail_errno("mkdir mp2");
  38         if (rump_sys_mkdir("/Tunion2/A", 0777) == -1)
  39                 atf_tc_fail_errno("mkdir A");
  40         if (rump_sys_mkdir("/Tunion2/B", 0777) == -1)
  41                 atf_tc_fail_errno("mkdir B");
  42
  43         unionargs.target = __UNCONST("/Tunion2/A");
  44         unionargs.mntflags = UNMNT_BELOW;
  45
  46         if (rump_sys_mount(MOUNT_UNION, "/Tunion", 0,
  47             &unionargs, sizeof(unionargs)) == -1)
  48                 atf_tc_fail_errno("union mount");
  49
  50         unionargs.target = __UNCONST("/Tunion2/B");
  51         unionargs.mntflags = UNMNT_BELOW;
  52
  53         rump_sys_mount(MOUNT_UNION, "/Tunion", 0,&unionargs,sizeof(unionargs));
  54 }
  55
  56 ATF_TC(devnull1);
  57 ATF_TC_HEAD(devnull1, tc)
  58 {
  59         atf_tc_set_md_var(tc, "descr", "mount_union -b and "
  60             "'echo x > /un/null'");
  61 }
  62
  63 ATF_TC_BODY(devnull1, tc)
  64 {
  65         struct union_args unionargs;
  66         int fd, res;
  67
  68         rump_init();
  69
  70         if (rump_sys_mkdir("/mp", 0777) == -1)
  71                 atf_tc_fail_errno("mkdir mp");
  72
  73         unionargs.target = __UNCONST("/dev");
  74         unionargs.mntflags = UNMNT_BELOW;
  75
  76         if (rump_sys_mount(MOUNT_UNION, "/mp", 0,
  77             &unionargs, sizeof(unionargs)) == -1)
  78                 atf_tc_fail_errno("union mount");
  79
  80         fd = rump_sys_open("/mp/null", O_WRONLY | O_CREAT | O_TRUNC);
  81
  82         if (fd == -1)
  83                 atf_tc_fail_errno("open");
  84
  85         res = rump_sys_write(fd, &fd, sizeof(fd));
  86         if (res != sizeof(fd))
  87                 atf_tc_fail("write");
  88 }
  89
  90 ATF_TC(devnull2);
  91 ATF_TC_HEAD(devnull2, tc)
  92 {
  93         atf_tc_set_md_var(tc, "descr", "mount_union -b and "
  94             "'echo x >> /un/null'");
  95 }
  96
  97 ATF_TC_BODY(devnull2, tc)
  98 {
  99         struct union_args unionargs;
 100         int fd, res;
 101
 102         rump_init();
 103
 104         if (rump_sys_mkdir("/mp", 0777) == -1)
 105                 atf_tc_fail_errno("mkdir mp");
 106
 107         unionargs.target = __UNCONST("/dev");
 108         unionargs.mntflags = UNMNT_BELOW;
 109
 110         if (rump_sys_mount(MOUNT_UNION, "/mp", 0,
 111             &unionargs, sizeof(unionargs)) == -1)
 112                 atf_tc_fail_errno("union mount");
 113
 114         fd = rump_sys_open("/mp/null", O_WRONLY | O_CREAT | O_APPEND);
 115         if (fd == -1)
 116                 atf_tc_fail_errno("open");
 117
 118         res = rump_sys_write(fd, &fd, sizeof(fd));
 119         if (res != sizeof(fd))
 120                 atf_tc_fail("write");
 121 }
 122
 123 ATF_TP_ADD_TCS(tp)
 124 {
 125         ATF_TP_ADD_TC(tp, multilayer);
 126         ATF_TP_ADD_TC(tp, devnull1);
 127         ATF_TP_ADD_TC(tp, devnull2);
 128
 129         return atf_no_error();
 130 }