tests/fs/tmpfs/t_sizes.sh

   1 # $NetBSD: t_sizes.sh,v 1.5 2010/11/07 17:51:18 jmmv Exp $
   2 #
   3 # Copyright (c) 2005, 2006, 2007, 2008 The NetBSD Foundation, Inc.
   4 # All rights reserved.
   5 #
   6 # Redistribution and use in source and binary forms, with or without
   7 # modification, are permitted provided that the following conditions
   8 # are met:
   9 # 1. Redistributions of source code must retain the above copyright
  10 #    notice, this list of conditions and the following disclaimer.
  11 # 2. Redistributions in binary form must reproduce the above copyright
  12 #    notice, this list of conditions and the following disclaimer in the
  13 #    documentation and/or other materials provided with the distribution.
  14 #
  15 # THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  16 # ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  17 # TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  18 # PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  19 # BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  20 # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  21 # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  22 # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  23 # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  24 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  25 # POSSIBILITY OF SUCH DAMAGE.
  26 #
  27
  28 #
  29 # Verifies that the file system controls memory usage correctly.
  30 #
  31
  32 atf_test_case small
  33 small_head() {
  34         atf_set "descr" "Checks the status after creating a small file"
  35         atf_set "require.user" "root"
  36 }
  37 small_body() {
  38         test_mount -o -s10M
  39
  40         echo a >a || atf_fail "Could not create file"
  41         eval $($(atf_get_srcdir)/h_tools statvfs .)
  42         f_bused=$((${f_blocks} - ${f_bfree}))
  43         [ ${f_bused} -gt 1 ] || atf_fail "Incorrect bused count"
  44         atf_check -s eq:0 -o empty -e empty rm a
  45
  46         test_unmount
  47 }
  48
  49 atf_test_case big
  50 big_head() {
  51         atf_set "descr" "Checks the status after creating a big file"
  52         atf_set "require.user" "root"
  53 }
  54 big_body() {
  55         test_mount -o -s10M
  56
  57         pagesize=$(sysctl hw.pagesize | cut -d ' ' -f 3)
  58         eval $($(atf_get_srcdir)/h_tools statvfs . | sed -e 's|^f_|cf_|')
  59         cf_bused=$((${cf_blocks} - ${cf_bfree}))
  60
  61         atf_check -s eq:0 -o ignore -e ignore \
  62             dd if=/dev/zero of=a bs=1m count=5
  63         eval $($(atf_get_srcdir)/h_tools statvfs .)
  64         f_bused=$((${f_blocks} - ${f_bfree}))
  65         [ ${f_bused} -ne ${cf_bused} ] || atf_fail "bused did not change"
  66         [ ${f_bused} -gt $((5 * 1024 * 1024 / ${pagesize})) ] || \
  67             atf_fail "bused too big"
  68         of_bused=${f_bused}
  69         atf_check -s eq:0 -o empty -e empty rm a
  70         eval $($(atf_get_srcdir)/h_tools statvfs .)
  71         f_bused=$((${f_blocks} - ${f_bfree}))
  72         [ ${f_bused} -lt ${of_bused} ] || \
  73             atf_fail "bused was not correctly restored"
  74
  75         test_unmount
  76 }
  77
  78 atf_test_case overflow
  79 overflow_head() {
  80         atf_set "descr" "Checks the status after creating a big file that" \
  81                         "overflows the file system limits"
  82         atf_set "require.user" "root"
  83 }
  84 overflow_body() {
  85         test_mount -o -s10M
  86
  87         atf_check -s eq:0 -o empty -e empty touch a
  88         atf_check -s eq:0 -o empty -e empty rm a
  89         eval $($(atf_get_srcdir)/h_tools statvfs .)
  90         of_bused=$((${f_blocks} - ${f_bfree}))
  91         atf_check -s eq:1 -o ignore -e ignore \
  92             dd if=/dev/zero of=a bs=1m count=15
  93         atf_check -s eq:0 -o empty -e empty rm a
  94         eval $($(atf_get_srcdir)/h_tools statvfs .)
  95         f_bused=$((${f_blocks} - ${f_bfree}))
  96         [ ${f_bused} -ge ${of_bused} -a ${f_bused} -le $((${of_bused} + 1)) ] \
  97             || atf_fail "Incorrect bused"
  98
  99         test_unmount
 100 }
 101
 102 atf_test_case overwrite
 103 overwrite_head() {
 104         atf_set "descr" "Checks that writing to the middle of a file" \
 105                         "does not change its size"
 106         atf_set "require.user" "root"
 107 }
 108 overwrite_body() {
 109         test_mount -o -s10M
 110
 111         atf_check -s eq:0 -o ignore -e ignore \
 112             dd if=/dev/zero of=a bs=1024 count=10
 113         sync
 114         atf_check -s eq:0 -o ignore -e ignore \
 115             dd if=/dev/zero of=a bs=1024 conv=notrunc seek=1 count=1
 116         sync
 117         eval $(stat -s a)
 118         [ ${st_size} -eq 10240 ] || atf_fail "Incorrect file size"
 119
 120         test_unmount
 121 }
 122
 123 atf_init_test_cases() {
 124         . $(atf_get_srcdir)/../h_funcs.subr
 125         . $(atf_get_srcdir)/h_funcs.subr
 126
 127         atf_add_test_case small
 128         atf_add_test_case big
 129         atf_add_test_case overflow
 130         atf_add_test_case overwrite
 131 }