mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/kdave/btrfs-progs.git
synced 2024-11-28 22:54:12 +08:00
320 lines
6.8 KiB
Bash
320 lines
6.8 KiB
Bash
#!/bin/bash
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#
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# Common routines for all tests
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#
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# assert that argument is not empty and is an existing path (file or directory)
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_assert_path()
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{
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local path
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path="$1"
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if [ -z "$path" ]; then
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echo "ASSERTION FAIL: $path is not valid"
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exit 1
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fi
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if [ -f "$path" -o -d "$path" -o -b "$path" ]; then
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return 0
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fi
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echo "ASSERTION FAIL: $path is not valid"
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exit 1
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}
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_fail()
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{
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echo "$*" | tee -a "$RESULTS"
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exit 1
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}
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# log a message to the results file
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_log()
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{
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echo "$*" | tee -a "$RESULTS"
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}
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_not_run()
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{
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echo " [NOTRUN] $*"
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exit 0
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}
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run_check()
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{
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echo "############### $@" >> "$RESULTS" 2>&1
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if [ "$TEST_LOG" = 'tty' ]; then echo "CMD: $@" > /dev/tty; fi
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if [ "$1" = 'root_helper' ]; then
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"$@" >> "$RESULTS" 2>&1 || _fail "failed: $@"
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else
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$INSTRUMENT "$@" >> "$RESULTS" 2>&1 || _fail "failed: $@"
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fi
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}
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# same as run_check but the stderr+stdout output is duplicated on stdout and
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# can be processed further
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run_check_stdout()
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{
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echo "############### $@" >> "$RESULTS" 2>&1
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if [ "$TEST_LOG" = 'tty' ]; then echo "CMD(stdout): $@" > /dev/tty; fi
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if [ "$1" = 'root_helper' ]; then
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"$@" 2>&1 | tee -a "$RESULTS" || _fail "failed: $@"
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else
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$INSTRUMENT "$@" 2>&1 | tee -a "$RESULTS" || _fail "failed: $@"
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fi
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}
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# same as run_check but does not fail the test if it's handled gracefully by
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# the tool, unexpected failure like segfault or abor will exit forcibly
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# output is logged
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run_mayfail()
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{
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local ret
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echo "############### $@" >> "$RESULTS" 2>&1
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if [ "$TEST_LOG" = 'tty' ]; then echo "CMD(mayfail): $@" > /dev/tty; fi
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if [ "$1" = 'root_helper' ]; then
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"$@" >> $RESULTS 2>&1
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else
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$INSTRUMENT "$@" >> "$RESULTS" 2>&1
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fi
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ret=$?
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if [ $ret != 0 ]; then
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echo "failed (ignored, ret=$ret): $@" >> "$RESULTS"
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if [ $ret == 139 ]; then
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_fail "mayfail: returned code 139 (SEGFAULT), not ignored"
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elif [ $ret == 134 ]; then
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_fail "mayfail: returned code 134 (SIGABRT), not ignored"
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fi
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return $ret
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fi
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}
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# first argument is error message to print if it fails, otherwise
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# same as run_check but expects the command to fail, output is logged
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run_mustfail()
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{
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local msg
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msg="$1"
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shift
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echo "############### $@" >> "$RESULTS" 2>&1
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if [ "$TEST_LOG" = 'tty' ]; then echo "CMD(mustfail): $@" > /dev/tty; fi
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if [ "$1" = 'root_helper' ]; then
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"$@" >> "$RESULTS" 2>&1
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else
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$INSTRUMENT "$@" >> "$RESULTS" 2>&1
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fi
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if [ $? != 0 ]; then
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echo "failed (expected): $@" >> "$RESULTS"
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return 0
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else
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echo "succeeded (unexpected!): $@" >> "$RESULTS"
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_fail "unexpected success: $msg"
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return 1
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fi
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}
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check_prereq()
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{
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if ! [ -f "$TOP/$1" ]; then
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_fail "Failed prerequisites: $1";
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fi
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}
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check_global_prereq()
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{
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which $1 &> /dev/null
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if [ $? -ne 0 ]; then
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_fail "Failed system wide prerequisities: $1";
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fi
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}
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check_image()
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{
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local image
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image=$1
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echo "testing image $(basename $image)" >> "$RESULTS"
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$TOP/btrfs check "$image" >> "$RESULTS" 2>&1
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[ $? -eq 0 ] && _fail "btrfs check should have detected corruption"
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run_check $TOP/btrfs check --repair "$image"
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run_check $TOP/btrfs check "$image"
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}
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# Extract a usable image from packed formats
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# - raw btrfs filesystem images, suffix .raw
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# - dtto compressed by XZ, suffix .raw.xz
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# - meta-dump images with suffix .img
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# - dtto compressed by XZ, suffix .img.xz
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# - compressed send stream, .stream.xz
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extract_image()
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{
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local image
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local cleanme
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image="$1"
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case "$image" in
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*.img)
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rm -f "$image.restored"
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: ;;
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*.img.xz)
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xz --decompress --keep "$image" || \
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_fail "failed to decompress image $image" >&2
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image=${image%%.xz}
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rm -f "$image.restored"
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cleanme=$image
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;;
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*.raw)
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cp --sparse=auto "$image" "$image.restored"
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;;
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*.raw.xz)
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xz --decompress --keep "$image" || \
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_fail "failed to decompress image $image" >&2
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image=${image%%.xz}
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mv "$image" "$image.restored"
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;;
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*.stream.xz)
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xz --decompress --keep "$image" || \
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_fail "failed to decompress file $image" >&2
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image=${image%%.xz}
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mv "$image" "$image.restored"
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;;
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esac
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if ! [ -f "$image.restored" ]; then
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echo "restoring image $(basename $image)" >> "$RESULTS"
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"$TOP/btrfs-image" -r "$image" "$image.restored" \
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&>> "$RESULTS" \
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|| _fail "failed to restore image $image" >&2
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fi
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[ -f "$cleanme" ] && rm -f "$cleanme"
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echo "$image.restored"
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}
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# Process all image dumps in a given directory
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check_all_images()
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{
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local dir
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local extracted
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dir="$1"
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for image in $(find "$dir" \( -iname '*.img' -o \
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-iname '*.img.xz' -o \
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-iname '*.raw' -o \
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-iname '*.raw.xz' \) | sort)
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do
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extracted=$(extract_image "$image")
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check_image "$extracted"
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rm -f "$extracted"
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done
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}
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# some tests need to mount the recovered image and do verifications call
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# 'setup_root_helper' and then check for have_root_helper == 1 if the test
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# needs to fail otherwise; using sudo by default for now
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SUDO_HELPER=
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NEED_SUDO_VALIDATE=unknown
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export SUDO_HELPER
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export NEED_SUDO_VALIDATE
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root_helper()
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{
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if [ $UID -eq 0 ]; then
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"$@"
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else
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if [ "$NEED_SUDO_VALIDATE" = 'yes' ]; then
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sudo -v -n &>/dev/null || \
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_not_run "Need to validate sudo credentials"
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sudo -n "$@"
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elif [ "$NEED_SUDO_VALIDATE" = 'no' ]; then
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sudo -n /bin/true &> /dev/null || \
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_not_run "Need to validate sudo user settings"
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sudo -n "$@"
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else
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# should not happen
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_not_run "Need to validate root privileges"
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fi
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fi
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}
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setup_root_helper()
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{
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if [ $UID -eq 0 -o -n "$SUDO_HELPER" ]; then
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return
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fi
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# Test for old sudo or special settings, which make sudo -v fail even
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# if user setting is NOPASSWD
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sudo -n /bin/true &>/dev/null && NEED_SUDO_VALIDATE=no
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# Newer sudo or default sudo setting
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sudo -v -n &>/dev/null && NEED_SUDO_VALIDATE=yes
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if [ "$NEED_SUDO_VALIDATE" = 'unknown' ]; then
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_not_run "Need to validate root privileges"
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fi
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SUDO_HELPER=root_helper
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}
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prepare_test_dev()
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{
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# num[K/M/G/T...]
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local size="$1"
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[[ "$TEST_DEV" ]] && return
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[[ "$size" ]] || size='2G'
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echo "\$TEST_DEV not given, use $TOP/test/test.img as fallback" >> \
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"$RESULTS"
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TEST_DEV="$TOP/tests/test.img"
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truncate -s "$size" "$TEST_DEV" || _not_run "create file for loop device failed"
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}
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run_check_mount_test_dev()
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{
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setup_root_helper
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local loop_opt
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if [[ -b "$TEST_DEV" ]]; then
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loop_opt=""
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elif [[ -f "$TEST_DEV" ]]; then
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loop_opt="-o loop"
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else
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_fail "Invalid \$TEST_DEV: $TEST_DEV"
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fi
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[[ -d "$TEST_MNT" ]] || {
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_fail "Invalid \$TEST_MNT: $TEST_MNT"
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}
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run_check $SUDO_HELPER mount $loop_opt "$@" "$TEST_DEV" "$TEST_MNT"
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}
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run_check_umount_test_dev()
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{
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setup_root_helper
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run_check $SUDO_HELPER umount "$@" "$TEST_DEV"
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}
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check_kernel_support()
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{
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if ! grep -iq 'btrfs' /proc/filesystems; then
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echo "WARNING: btrfs filesystem not listed in /proc/filesystems, some tests might fail"
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return 1
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fi
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return 0
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}
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init_env()
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{
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TEST_MNT="${TEST_MNT:-$TOP/tests/mnt}"
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export TEST_MNT
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mkdir -p "$TEST_MNT" || { echo "Failed mkdir -p $TEST_MNT"; exit 1; }
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}
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init_env
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