mirror of
https://git.kernel.org/pub/scm/fs/ext2/e2fsprogs.git
synced 2024-12-03 15:03:59 +08:00
e0d5dd3602
Once we've "fixed" the filesystem, try mounting and modifying it to see if we can break the kernel. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
328 lines
7.6 KiB
Bash
Executable File
328 lines
7.6 KiB
Bash
Executable File
#!/bin/bash
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# Test harness to fuzz a filesystem over and over...
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# Copyright (C) 2014 Oracle.
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DIR=/tmp
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PASSES=10000
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SZ=32m
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SCRIPT_DIR="$(dirname "$0")"
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FEATURES="has_journal,extent,huge_file,flex_bg,uninit_bg,dir_nlink,extra_isize,64bit,metadata_csum,bigalloc,sparse_super2,inline_data"
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BLK_SZ=4096
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INODE_SZ=256
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EXTENDED_OPTS="discard"
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EXTENDED_FSCK_OPTIONS=""
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RUN_FSCK=1
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OVERRIDE_PATH=1
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HAS_FUSE2FS=0
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USE_FUSE2FS=0
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MAX_FSCK=10
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SRCDIR=/etc
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test -x "${SCRIPT_DIR}/fuse2fs" && HAS_FUSE2FS=1
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print_help() {
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echo "Usage: $0 OPTIONS"
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echo "-b: FS block size is this. (${BLK_SZ})"
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echo "-B: Corrupt this many bytes per run."
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echo "-d: Create test files in this directory. (${DIR})"
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echo "-E: Extended mke2fs options."
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echo "-f: Do not run e2fsck after each pass."
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echo "-F: Extended e2fsck options."
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echo "-I: Create inodes of this size. (${INODE_SZ})"
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echo "-n: Run this many passes. (${PASSES})"
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echo "-O: Create FS with these features."
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echo "-p: Use system's mke2fs/e2fsck/tune2fs tools."
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echo "-s: Create FS images of this size. (${SZ})"
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echo "-S: Copy files from this dir. (${SRCDIR})"
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echo "-x: Run e2fsck at most this many times. (${MAX_FSCK})"
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test "${HAS_FUSE2FS}" -gt 0 && echo "-u: Use fuse2fs instead of the kernel."
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exit 0
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}
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GETOPT="d:n:s:O:I:b:B:E:F:fpx:S:"
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test "${HAS_FUSE2FS}" && GETOPT="${GETOPT}u"
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while getopts "${GETOPT}" opt; do
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case "${opt}" in
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"B")
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E2FUZZ_ARGS="${E2FUZZ_ARGS} -b ${OPTARG}"
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;;
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"d")
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DIR="${OPTARG}"
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;;
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"n")
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PASSES="${OPTARG}"
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;;
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"s")
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SZ="${OPTARG}"
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;;
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"O")
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FEATURES="${FEATURES},${OPTARG}"
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;;
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"I")
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INODE_SZ="${OPTARG}"
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;;
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"b")
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BLK_SZ="${OPTARG}"
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;;
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"E")
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EXTENDED_OPTS="${OPTARG}"
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;;
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"F")
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EXTENDED_FSCK_OPTS="-E ${OPTARG}"
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;;
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"f")
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RUN_FSCK=0
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;;
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"p")
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OVERRIDE_PATH=0
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;;
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"u")
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USE_FUSE2FS=1
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;;
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"x")
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MAX_FSCK="${OPTARG}"
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;;
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"S")
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SRCDIR="${OPTARG}"
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;;
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*)
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print_help
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;;
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esac
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done
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if [ "${OVERRIDE_PATH}" -gt 0 ]; then
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PATH="${SCRIPT_DIR}:${SCRIPT_DIR}/../e2fsck/:${PATH}"
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export PATH
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fi
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TESTDIR="${DIR}/tests/"
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TESTMNT="${DIR}/mnt/"
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BASE_IMG="${DIR}/e2fuzz.img"
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cat > /tmp/mke2fs.conf << ENDL
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[defaults]
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base_features = ${FEATURES}
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default_mntopts = acl,user_xattr,block_validity
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enable_periodic_fsck = 0
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blocksize = ${BLK_SZ}
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inode_size = ${INODE_SZ}
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inode_ratio = 4096
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cluster_size = $((BLK_SZ * 2))
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options = ${EXTENDED_OPTS}
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ENDL
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MKE2FS_CONFIG=/tmp/mke2fs.conf
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export MKE2FS_CONFIG
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# Set up FS image
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echo "+ create fs image"
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umount "${TESTDIR}"
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umount "${TESTMNT}"
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rm -rf "${TESTDIR}"
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rm -rf "${TESTMNT}"
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mkdir -p "${TESTDIR}"
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mkdir -p "${TESTMNT}"
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rm -rf "${BASE_IMG}"
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truncate -s "${SZ}" "${BASE_IMG}"
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mke2fs -F -v "${BASE_IMG}"
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if [ $? -ne 0 ]; then
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exit $?
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fi
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# Populate FS image
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echo "+ populate fs image"
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modprobe loop
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mount "${BASE_IMG}" "${TESTMNT}" -o loop
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if [ $? -ne 0 ]; then
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exit $?
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fi
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SRC_SZ="$(du -ks "${SRCDIR}" | awk '{print $1}')"
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FS_SZ="$(( $(stat -f "${TESTMNT}" -c '%a * %S') / 1024 ))"
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NR="$(( (FS_SZ * 4 / 10) / SRC_SZ ))"
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if [ "${NR}" -lt 1 ]; then
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NR=1
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fi
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echo "+ make ${NR} copies"
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seq 1 "${NR}" | while read nr; do
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cp -pRdu "${SRCDIR}" "${TESTMNT}/test.${nr}" 2> /dev/null
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done
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umount "${TESTMNT}"
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e2fsck -fn "${BASE_IMG}"
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if [ $? -ne 0 ]; then
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echo "fsck failed??"
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exit 1
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fi
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# Run tests
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echo "+ run test"
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ret=0
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seq 1 "${PASSES}" | while read pass; do
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echo "+ pass ${pass}"
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PASS_IMG="${TESTDIR}/e2fuzz-${pass}.img"
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FSCK_IMG="${TESTDIR}/e2fuzz-${pass}.fsck"
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FUZZ_LOG="${TESTDIR}/e2fuzz-${pass}.fuzz.log"
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OPS_LOG="${TESTDIR}/e2fuzz-${pass}.ops.log"
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echo "++ corrupt image"
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cp "${BASE_IMG}" "${PASS_IMG}"
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if [ $? -ne 0 ]; then
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exit $?
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fi
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tune2fs -L "e2fuzz-${pass}" "${PASS_IMG}"
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e2fuzz -v "${PASS_IMG}" ${E2FUZZ_ARGS} > "${FUZZ_LOG}"
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if [ $? -ne 0 ]; then
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exit $?
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fi
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echo "++ mount image"
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if [ "${USE_FUSE2FS}" -gt 0 ]; then
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"${SCRIPT_DIR}/fuse2fs" "${PASS_IMG}" "${TESTMNT}"
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res=$?
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else
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mount "${PASS_IMG}" "${TESTMNT}" -o loop
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res=$?
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fi
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if [ "${res}" -eq 0 ]; then
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echo "+++ ls -laR"
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ls -laR "${TESTMNT}/test.1/" > /dev/null 2> "${OPS_LOG}"
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echo "+++ cat files"
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find "${TESTMNT}/test.1/" -type f -size -1048576k -print0 | xargs -0 cat > /dev/null 2>> "${OPS_LOG}"
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echo "+++ expand"
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find "${TESTMNT}/" -type f 2> /dev/null | head -n 50000 | while read f; do
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attr -l "$f" > /dev/null 2>> "${OPS_LOG}"
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if [ -f "$f" -a -w "$f" ]; then
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dd if=/dev/zero bs="${BLK_SZ}" count=1 >> "$f" 2>> "${OPS_LOG}"
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fi
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mv "$f" "$f.longer" > /dev/null 2>> "${OPS_LOG}"
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done
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sync
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echo "+++ create files"
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cp -pRdu "${SRCDIR}" "${TESTMNT}/test.moo" 2>> "${OPS_LOG}"
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sync
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echo "+++ remove files"
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rm -rf "${TESTMNT}/test.moo" 2>> "${OPS_LOG}"
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umount "${TESTMNT}"
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res=$?
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if [ "${res}" -ne 0 ]; then
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ret=1
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break
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fi
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sync
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test "${USE_FUSE2FS}" -gt 0 && sleep 2
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fi
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if [ "${RUN_FSCK}" -gt 0 ]; then
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cp "${PASS_IMG}" "${FSCK_IMG}"
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pass_img_sz="$(stat -c '%s' "${PASS_IMG}")"
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seq 1 "${MAX_FSCK}" | while read fsck_pass; do
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echo "++ fsck pass ${fsck_pass}: $(which e2fsck) -fy ${FSCK_IMG} ${EXTENDED_FSCK_OPTS}"
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FSCK_LOG="${TESTDIR}/e2fuzz-${pass}-${fsck_pass}.log"
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e2fsck -fy "${FSCK_IMG}" ${EXTENDED_FSCK_OPTS} > "${FSCK_LOG}" 2>&1
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res=$?
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echo "++ fsck returns ${res}"
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if [ "${res}" -eq 0 ]; then
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exit 0
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elif [ "${fsck_pass}" -eq "${MAX_FSCK}" ]; then
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echo "++ fsck did not fix in ${MAX_FSCK} passes."
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exit 1
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fi
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if [ "${res}" -gt 0 -a \
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"$(grep 'Memory allocation failed' "${FSCK_LOG}" | wc -l)" -gt 0 ]; then
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echo "++ Ran out of memory, get more RAM"
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exit 0
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fi
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if [ "${res}" -gt 0 -a \
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"$(grep 'Could not allocate block' "${FSCK_LOG}" | wc -l)" -gt 0 -a \
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"$(dumpe2fs -h "${FSCK_IMG}" | grep '^Free blocks:' | awk '{print $3}')0" -eq 0 ]; then
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echo "++ Ran out of space, get a bigger image"
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exit 0
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fi
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if [ "${fsck_pass}" -gt 1 ]; then
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diff -u "${TESTDIR}/e2fuzz-${pass}-$((fsck_pass - 1)).log" "${FSCK_LOG}"
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if [ $? -eq 0 ]; then
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echo "++ fsck makes no progress"
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exit 2
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fi
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fi
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fsck_img_sz="$(stat -c '%s' "${FSCK_IMG}")"
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if [ "${fsck_img_sz}" -ne "${pass_img_sz}" ]; then
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echo "++ fsck image size changed"
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exit 3
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fi
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done
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fsck_loop_ret=$?
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if [ "${fsck_loop_ret}" -gt 0 ]; then
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break;
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fi
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fi
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echo "+++ check fs for round 2"
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FSCK_LOG="${TESTDIR}/e2fuzz-${pass}-round2.log"
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e2fsck -fn "${FSCK_IMG}" ${EXTENDED_FSCK_OPTS} >> "${FSCK_LOG}" 2>&1
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res=$?
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if [ "${res}" -ne 0 ]; then
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echo "++++ fsck failed."
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exit 1
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fi
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echo "++ mount image (2)"
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mount "${FSCK_IMG}" "${TESTMNT}" -o loop
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res=$?
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if [ "${res}" -eq 0 ]; then
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echo "+++ ls -laR (2)"
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ls -laR "${TESTMNT}/test.1/" > /dev/null 2> "${OPS_LOG}"
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echo "+++ cat files (2)"
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find "${TESTMNT}/test.1/" -type f -size -1048576k -print0 | xargs -0 cat > /dev/null 2>> "${OPS_LOG}"
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echo "+++ expand (2)"
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find "${TESTMNT}/" -type f 2> /dev/null | head -n 50000 | while read f; do
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attr -l "$f" > /dev/null 2>> "${OPS_LOG}"
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if [ -f "$f" -a -w "$f" ]; then
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dd if=/dev/zero bs="${BLK_SZ}" count=1 >> "$f" 2>> "${OPS_LOG}"
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fi
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mv "$f" "$f.longer" > /dev/null 2>> "${OPS_LOG}"
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done
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sync
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echo "+++ create files (2)"
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cp -pRdu "${SRCDIR}" "${TESTMNT}/test.moo" 2>> "${OPS_LOG}"
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sync
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echo "+++ remove files (2)"
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rm -rf "${TESTMNT}/test.moo" 2>> "${OPS_LOG}"
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umount "${TESTMNT}"
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res=$?
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if [ "${res}" -ne 0 ]; then
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ret=1
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break
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fi
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sync
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test "${USE_FUSE2FS}" -gt 0 && sleep 2
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echo "+++ check fs (2)"
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e2fsck -fn "${FSCK_IMG}" >> "${FSCK_LOG}" 2>&1
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res=$?
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if [ "${res}" -ne 0 ]; then
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echo "++ fsck failed."
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exit 1
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fi
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else
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echo "++ mount(2) failed with ${res}"
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exit 1
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fi
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rm -rf "${FSCK_IMG}" "${PASS_IMG}" "${FUZZ_LOG}" "${TESTDIR}"/e2fuzz*.log
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done
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exit $ret
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