146 lines
4.1 KiB
Bash
Executable File
146 lines
4.1 KiB
Bash
Executable File
#!/bin/bash
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# (C) Copyright 2015 Stephen Warren
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#
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# SPDX-License-Identifier: GPL-2.0+
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# This script tests U-Boot's FAT filesystem code's ability to read non-
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# contiguous files.
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# When porting the ff.c FAT parsing code into U-Boot, it was found that ff.c
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# always reads files cluster-by-cluster, which results in poor performance.
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# This was solved by adding a patch to ff.c to coalesce reads of adjacent
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# clusters. Since this patch needed to correctly handle non-contiguous files,
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# this test was written to validate that.
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#
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# To execute the test, simply run it from the U-Boot source root directory:
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#
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# cd u-boot
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# ./test/fs/fat-noncontig-test.sh
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#
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# The test will create a FAT filesystem image, record the CRC of a randomly
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# generated file in the image, build U-Boot sandbox, invoke U-Boot sandbox to
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# read the file and validate that the CRCs match. Expected output is shown
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# below. The important part of the log is the penultimate line that contains
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# either "PASS" or "FAILURE".
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#
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# mkfs.fat 3.0.26 (2014-03-07)
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#
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#
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# U-Boot 2015.10-rc4-00018-g4b22a3e5513f (Oct 03 2015 - 13:49:23 -0600)
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#
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# DRAM: 128 MiB
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# Using default environment
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#
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# In: serial
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# Out: lcd
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# Err: lcd
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# Net: No ethernet found.
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# => host bind 0 sandbox/fat-noncontig.img
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# => load host 0:0 1000 noncontig.img
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# 33584964 bytes read in 18 ms (1.7 GiB/s)
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# => crc32 1000 $filesize 0
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# crc32 for 00001000 ... 02008743 ==> 6a080523
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# => if itest.l *0 != 2305086a; then echo FAILURE; else echo PASS; fi
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# PASS
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# => reset
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#
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# All temporary files used by this script are created in ./sandbox to avoid
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# polluting the source tree. test/fs/fs-test.sh also uses this directory for
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# the same purpose.
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#
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# TODO: Integrate this (and many other corner-cases e.g. different types of
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# FAT) with fs-test.sh so that a single script tests everything filesystem-
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# related.
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odir=sandbox
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img=${odir}/fat-noncontig.img
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mnt=${odir}/mnt
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fill=/dev/urandom
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testfn=noncontig.img
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mnttestfn=${mnt}/${testfn}
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crcaddr=0
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loadaddr=1000
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for prereq in fallocate mkfs.fat dd crc32; do
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if [ ! -x "`which $prereq`" ]; then
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echo "Missing $prereq binary. Exiting!"
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exit 1
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fi
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done
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make O=${odir} -s sandbox_defconfig && make O=${odir} -s -j8
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mkdir -p ${mnt}
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if [ ! -f ${img} ]; then
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fallocate -l 40M ${img}
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if [ $? -ne 0 ]; then
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echo fallocate failed - using dd instead
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dd if=/dev/zero of=${img} bs=1024 count=$((40 * 1024))
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if [ $? -ne 0 ]; then
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echo Could not create empty disk image
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exit $?
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fi
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fi
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mkfs.fat ${img}
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if [ $? -ne 0 ]; then
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echo Could not create FAT filesystem
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exit $?
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fi
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sudo mount -o loop,uid=$(id -u) ${img} ${mnt}
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if [ $? -ne 0 ]; then
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echo Could not mount test filesystem
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exit $?
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fi
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for ((sects=8; sects < 512; sects += 8)); do
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fn=${mnt}/keep-${sects}.img
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dd if=${fill} of=${fn} bs=512 count=${sects} >/dev/null 2>&1
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fn=${mnt}/remove-${sects}.img
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dd if=${fill} of=${fn} bs=512 count=${sects} >/dev/null 2>&1
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done
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rm -f ${mnt}/remove-*.img
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# 511 deliberately to trigger a file size that's not a multiple of the
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# sector size (ignoring sizes that are multiples of both).
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dd if=${fill} of=${mnttestfn} bs=511 >/dev/null 2>&1
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sudo umount ${mnt}
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if [ $? -ne 0 ]; then
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echo Could not unmount test filesystem
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exit $?
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fi
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fi
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sudo mount -o ro,loop,uid=$(id -u) ${img} ${mnt}
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if [ $? -ne 0 ]; then
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echo Could not mount test filesystem
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exit $?
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fi
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crc=0x`crc32 ${mnttestfn}`
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sudo umount ${mnt}
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if [ $? -ne 0 ]; then
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echo Could not unmount test filesystem
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exit $?
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fi
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crc=`printf %02x%02x%02x%02x \
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$((${crc} & 0xff)) \
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$(((${crc} >> 8) & 0xff)) \
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$(((${crc} >> 16) & 0xff)) \
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$((${crc} >> 24))`
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./sandbox/u-boot << EOF
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host bind 0 ${img}
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load host 0:0 ${loadaddr} ${testfn}
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crc32 ${loadaddr} \$filesize ${crcaddr}
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if itest.l *${crcaddr} != ${crc}; then echo FAILURE; else echo PASS; fi
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reset
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EOF
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if [ $? -ne 0 ]; then
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echo U-Boot exit status indicates an error
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exit $?
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fi
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