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Stephen Warren4a282742015-10-03 13:56:47 -06001#!/bin/bash
2
3# (C) Copyright 2015 Stephen Warren
4#
5# SPDX-License-Identifier: GPL-2.0+
6
7# This script tests U-Boot's FAT filesystem code's ability to read non-
8# contiguous files.
9
10# When porting the ff.c FAT parsing code into U-Boot, it was found that ff.c
11# always reads files cluster-by-cluster, which results in poor performance.
12# This was solved by adding a patch to ff.c to coalesce reads of adjacent
13# clusters. Since this patch needed to correctly handle non-contiguous files,
14# this test was written to validate that.
15#
16# To execute the test, simply run it from the U-Boot source root directory:
17#
18# cd u-boot
19# ./test/fs/fat-noncontig-test.sh
20#
21# The test will create a FAT filesystem image, record the CRC of a randomly
22# generated file in the image, build U-Boot sandbox, invoke U-Boot sandbox to
23# read the file and validate that the CRCs match. Expected output is shown
24# below. The important part of the log is the penultimate line that contains
25# either "PASS" or "FAILURE".
26#
27# mkfs.fat 3.0.26 (2014-03-07)
28#
29#
30# U-Boot 2015.10-rc4-00018-g4b22a3e5513f (Oct 03 2015 - 13:49:23 -0600)
31#
32# DRAM: 128 MiB
33# Using default environment
34#
35# In: serial
36# Out: lcd
37# Err: lcd
38# Net: No ethernet found.
39# => host bind 0 sandbox/fat-noncontig.img
40# => load host 0:0 1000 noncontig.img
41# 33584964 bytes read in 18 ms (1.7 GiB/s)
42# => crc32 1000 $filesize 0
43# crc32 for 00001000 ... 02008743 ==> 6a080523
44# => if itest.l *0 != 2305086a; then echo FAILURE; else echo PASS; fi
45# PASS
46# => reset
47#
48# All temporary files used by this script are created in ./sandbox to avoid
49# polluting the source tree. test/fs/fs-test.sh also uses this directory for
50# the same purpose.
51#
52# TODO: Integrate this (and many other corner-cases e.g. different types of
53# FAT) with fs-test.sh so that a single script tests everything filesystem-
54# related.
55
56odir=sandbox
57img=${odir}/fat-noncontig.img
58mnt=${odir}/mnt
59fill=/dev/urandom
60testfn=noncontig.img
61mnttestfn=${mnt}/${testfn}
62crcaddr=0
63loadaddr=1000
64
65for prereq in fallocate mkfs.fat dd crc32; do
66 if [ ! -x "`which $prereq`" ]; then
67 echo "Missing $prereq binary. Exiting!"
68 exit 1
69 fi
70done
71
72make O=${odir} -s sandbox_defconfig && make O=${odir} -s -j8
73
74mkdir -p ${mnt}
75if [ ! -f ${img} ]; then
76 fallocate -l 40M ${img}
Stephen Warren34a60d92015-11-17 10:29:07 -070077 if [ $? -ne 0 ]; then
78 echo fallocate failed - using dd instead
79 dd if=/dev/zero of=${img} bs=1024 count=$((40 * 1024))
80 if [ $? -ne 0 ]; then
81 echo Could not create empty disk image
82 exit $?
83 fi
84 fi
Stephen Warren4a282742015-10-03 13:56:47 -060085 mkfs.fat ${img}
Stephen Warren34a60d92015-11-17 10:29:07 -070086 if [ $? -ne 0 ]; then
87 echo Could not create FAT filesystem
88 exit $?
89 fi
Stephen Warren4a282742015-10-03 13:56:47 -060090
91 sudo mount -o loop,uid=$(id -u) ${img} ${mnt}
Stephen Warren34a60d92015-11-17 10:29:07 -070092 if [ $? -ne 0 ]; then
93 echo Could not mount test filesystem
94 exit $?
95 fi
Stephen Warren4a282742015-10-03 13:56:47 -060096
97 for ((sects=8; sects < 512; sects += 8)); do
98 fn=${mnt}/keep-${sects}.img
99 dd if=${fill} of=${fn} bs=512 count=${sects} >/dev/null 2>&1
100 fn=${mnt}/remove-${sects}.img
101 dd if=${fill} of=${fn} bs=512 count=${sects} >/dev/null 2>&1
102 done
103
104 rm -f ${mnt}/remove-*.img
105
106 # 511 deliberately to trigger a file size that's not a multiple of the
107 # sector size (ignoring sizes that are multiples of both).
108 dd if=${fill} of=${mnttestfn} bs=511 >/dev/null 2>&1
109
110 sudo umount ${mnt}
Stephen Warren34a60d92015-11-17 10:29:07 -0700111 if [ $? -ne 0 ]; then
112 echo Could not unmount test filesystem
113 exit $?
114 fi
Stephen Warren4a282742015-10-03 13:56:47 -0600115fi
116
117sudo mount -o ro,loop,uid=$(id -u) ${img} ${mnt}
Stephen Warren34a60d92015-11-17 10:29:07 -0700118if [ $? -ne 0 ]; then
119 echo Could not mount test filesystem
120 exit $?
121fi
Stephen Warren4a282742015-10-03 13:56:47 -0600122crc=0x`crc32 ${mnttestfn}`
123sudo umount ${mnt}
Stephen Warren34a60d92015-11-17 10:29:07 -0700124if [ $? -ne 0 ]; then
125 echo Could not unmount test filesystem
126 exit $?
127fi
Stephen Warren4a282742015-10-03 13:56:47 -0600128
129crc=`printf %02x%02x%02x%02x \
130 $((${crc} & 0xff)) \
131 $(((${crc} >> 8) & 0xff)) \
132 $(((${crc} >> 16) & 0xff)) \
133 $((${crc} >> 24))`
134
135./sandbox/u-boot << EOF
136host bind 0 ${img}
137load host 0:0 ${loadaddr} ${testfn}
138crc32 ${loadaddr} \$filesize ${crcaddr}
139if itest.l *${crcaddr} != ${crc}; then echo FAILURE; else echo PASS; fi
140reset
141EOF
Stephen Warren34a60d92015-11-17 10:29:07 -0700142if [ $? -ne 0 ]; then
143 echo U-Boot exit status indicates an error
144 exit $?
145fi