btrfs-progs: Document logic of btrfs_read_dev_super

[platform/upstream/btrfs-progs.git] / tests / fsck-tests.sh

diff --git a/tests/fsck-tests.sh b/tests/fsck-tests.sh
index a992b45..15d26c7 100755 (executable)
--- a/tests/fsck-tests.sh
+++ b/tests/fsck-tests.sh
@@ -1,35 +1,53 @@
 #!/bin/bash
 #
 # loop through all of our bad images and make sure fsck repairs them properly
-#
-# It's GPL, same as everything else in this tree.
-#
 
-unset top
-unset LANG
 LANG=C
-script_dir=$(dirname $(realpath $0))
-top=$(realpath $script_dir/../)
+SCRIPT_DIR=$(dirname $(readlink -f "$0"))
+TOP=$(readlink -f "$SCRIPT_DIR/../")
 TEST_DEV=${TEST_DEV:-}
-TEST_MNT=${TEST_MNT:-$top/tests/mnt}
-RESULT="$top/tests/fsck-tests-results.txt"
+RESULTS="$TOP/tests/fsck-tests-results.txt"
+IMAGE="$TOP/tests/test.img"
 
-source $top/tests/common
+source "$TOP/tests/common"
 
-# Allow child test to use $top and $RESULT
-export top
-export RESULT
-# For custom script needs to verfiy recovery
-export TEST_MNT
+export TOP
+export RESULTS
 export LANG
+export IMAGE
+export TEST_DEV
 
-rm -f $RESULT
-mkdir -p $TEST_MNT || _fail "unable to create mount point on $TEST_MNT"
+rm -f "$RESULTS"
 
 # test rely on corrupting blocks tool
 check_prereq btrfs-corrupt-block
 check_prereq btrfs-image
 check_prereq btrfs
+check_prereq btrfstune
+check_kernel_support
+
+run_one_test() {
+       local testname
+
+       testname="$1"
+       echo "    [TEST/fsck]   $(basename $testname)"
+       cd "$testname"
+       echo "=== Entering $testname" >> "$RESULTS"
+       if [ -x test.sh ]; then
+               # Type 2
+               ./test.sh
+               if [ $? -ne 0 ]; then
+                       if [[ $TEST_LOG =~ dump ]]; then
+                               cat "$RESULTS"
+                       fi
+                       _fail "test failed for case $(basename $testname)"
+               fi
+       else
+               # Type 1
+               check_all_images
+       fi
+       cd "$TOP"
+}
 
 # Each dir contains one type of error for btrfsck test.
 # Each dir must be one of the following 2 types:
@@ -44,58 +62,8 @@ check_prereq btrfs
 #    This is for case btrfs-image can't dump or case needs extra
 #    check/verify
 
-for i in $(find $top/tests/fsck-tests -maxdepth 1 -mindepth 1 -type d | sort)
+for i in $(find "$TOP/tests/fsck-tests" -maxdepth 1 -mindepth 1 -type d        \
+       ${TEST:+-name "$TEST"} | sort)
 do
-       echo "     [TEST]    $(basename $i)"
-       cd $i
-       if [ -x test.sh ]; then
-               # Type 2
-               ./test.sh
-               if [ $? -ne 0 ]; then
-                       _fail "test failed for case $(basename $i)"
-               fi
-       else
-               # Type 1
-               check_all_images `pwd`
-       fi
-       cd $top
+       run_one_test "$i"
 done
-
-if [ -z $TEST_DEV ] || [ -z $TEST_MNT ];then
-       echo "     [NOTRUN] extent tree rebuild"
-       exit 0
-fi
-
-# test whether fsck can rebuild a corrupted extent tree
-test_extent_tree_rebuild()
-{
-       echo "     [TEST]    extent tree rebuild"
-       $top/mkfs.btrfs -f $TEST_DEV >> /dev/null 2>&1 || _fail "fail to mkfs"
-
-       run_check mount $TEST_DEV $TEST_MNT
-       cp -aR /lib/modules/`uname -r`/ $TEST_MNT 2>&1
-
-       for i in `seq 1 100`;do
-               $top/btrfs sub snapshot $TEST_MNT \
-                       $TEST_MNT/snapaaaaaaa_$i >& /dev/null
-       done
-       run_check umount $TEST_DEV
-
-       # get extent root bytenr
-       extent_root_bytenr=`$top/btrfs-debug-tree -r $TEST_DEV | \
-                           grep extent | awk '{print $7}'`
-       if [ -z $extent_root_bytenr ];then
-               _fail "fail to get extent root bytenr"
-       fi
-
-       # corrupt extent root node block
-       run_check $top/btrfs-corrupt-block -l $extent_root_bytenr \
-               -b 4096 $TEST_DEV
-
-       $top/btrfs check $TEST_DEV >& /dev/null && \
-                       _fail "btrfs check should detect failure"
-       run_check $top/btrfs check --init-extent-tree $TEST_DEV
-       run_check $top/btrfs check $TEST_DEV
-}
-
-test_extent_tree_rebuild