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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 15:49:25 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 15:49:25 +0000
commit464df1d5e5ab1322e2dd0a7796939fff1aeefa9a (patch)
tree6a403684e0978f0287d7f0ec0e5aab1fd31a59e1 /tests/u_mke2fs_opt_offset
parentInitial commit. (diff)
downloade2fsprogs-upstream.tar.xz
e2fsprogs-upstream.zip
Adding upstream version 1.47.0.upstream/1.47.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/u_mke2fs_opt_offset')
-rw-r--r--tests/u_mke2fs_opt_offset/script104
1 files changed, 104 insertions, 0 deletions
diff --git a/tests/u_mke2fs_opt_offset/script b/tests/u_mke2fs_opt_offset/script
new file mode 100644
index 0000000..4b34b7a
--- /dev/null
+++ b/tests/u_mke2fs_opt_offset/script
@@ -0,0 +1,104 @@
+test_description="e2undo and mke2fs with offset option"
+OUT="$test_name.log"
+TDB_FILE="$TMPFILE.e2undo"
+
+E2UNDO_FEATURE_COMPAT_OFFSET=1
+
+trap "rm -f $TDB_FILE" EXIT INT QUIT
+
+test_e2undo_mke2fs_off() {
+ OFF=$1
+
+ rm -f "$TDB_FILE"
+ echo "testing e2undo and mke2fs with the -E offset=$OFF option" >> "$OUT"
+ # prepare $TMPFILE
+ yes a | $DD of="$TMPFILE" bs="$OFF" count=1 iflag=fullblock \
+ > /dev/null 2>>"$OUT"
+ yes b | $DD bs=1k count=1024 iflag=fullblock >> "$TMPFILE" 2>>"$OUT"
+ yes c | $DD bs=1k count=3 iflag=fullblock >> "$TMPFILE" 2>>"$OUT"
+
+ crc_exp=`$CRCSUM "$TMPFILE"`
+ $MKE2FS -F -z "$TDB_FILE" -b 1024 -E offset="$OFF" "$TMPFILE" 1024 \
+ >> "$OUT" 2>&1
+
+ # supplement test with offset specific data
+ supplement_test_$OFF
+
+ # dump undo header (just to ease debugging in case of a failure)
+ echo "undo header:" >> "$OUT"
+ $E2UNDO -h "$TDB_FILE" "$TMPFILE" >> "$OUT" 2>&1
+
+ # offset is stored in the undo header
+ $E2UNDO "$TDB_FILE" "$TMPFILE" >> "$OUT" 2>&1
+ crc_act=`$CRCSUM "$TMPFILE"`
+
+ # also test the key extension code path: the key for the fs block 960
+ # (tdb block 30) is extended by the fs block 992 (tdb block 31)
+ # => we have exactly 3 key blocks instead of 4
+ num_keys_exp=3
+ num_keys_act=`$E2UNDO -h "$TDB_FILE" "$TMPFILE" | grep "^nr keys:" \
+ | cut -f2`
+
+ offset_exp=$OFF
+ offset_act=`$E2UNDO -h "$TDB_FILE" "$TMPFILE" | grep "^fs offset:" \
+ | cut -f2`
+ compat_exp=$E2UNDO_FEATURE_COMPAT_OFFSET
+ compat_act=`$E2UNDO -h "$TDB_FILE" "$TMPFILE" | grep "^compat:" | cut -f3`
+
+ if [ "$crc_exp" != "$crc_act" -o \
+ "$num_keys_exp" != "$num_keys_act" -o \
+ "$offset_exp" != "$offset_act" -o \
+ $(($compat_act & $E2UNDO_FEATURE_COMPAT_OFFSET)) -ne $compat_exp ]
+ then
+ echo "mke2fs called with offset: $OFF" >> "$test_name.failed"
+ echo "crc_exp: $crc_exp" >> "$test_name.failed"
+ echo "crc_act: $crc_act" >> "$test_name.failed"
+ echo "num_keys_exp: $num_keys_exp" >> "$test_name.failed"
+ echo "num_keys_act: $num_keys_act" >> "$test_name.failed"
+ echo "offset_exp: $offset_exp" >> "$test_name.failed"
+ echo "offset_act: $offset_act" >> "$test_name.failed"
+ echo "compat_exp: $compat_exp" >> "$test_name.failed"
+ echo "compat_act: $compat_act" >> "$test_name.failed"
+ echo >> "$test_name.failed"
+ fi
+}
+
+supplement_test_2048() {
+ # modify the two subsequent 1k blocks (1026 and 1027) after the fs end:
+ # e2undo will overwrite these modified blocks with the old
+ # data again (this might be considered as a bug (for now,
+ # this testcase just documents this behavior))
+ SEEK_BLOCKS=$(((2048 + 1024 * 1024) / 1024))
+ yes d | $DD of="$TMPFILE" bs=1k count=2 seek="$SEEK_BLOCKS" \
+ iflag=fullblock > /dev/null 2>>"$OUT"
+}
+
+supplement_test_96255() {
+ # nothing to supplement
+ :
+}
+
+# test even offset < tdb_data_size
+# with an offset of 2048 the old code wrote an incorrect undo file,
+# for example, the computations for fs block 0 were wrong:
+# * backing_blk_num was set to ULLONG_MAX - 1 instead of 0
+# * data was read from the beginning of the file instead of offset 2048
+# * data_ptr was set to read_ptr - 2048
+# for details, see the old undo_write_tdb code in undo_io.c
+test_e2undo_mke2fs_off 2048
+
+# test odd offset > tdb_data_size: 32768 * 3 - 2 * 1024 - 1
+# a somewhat arbitrary value, for example, during the backup of
+# fs block 0 such an offset resulted in:
+# * the largest "in fs block offset" (96255 % 1024 == 1023)
+# * a wrong value for data_size (actual bytes read: 31745)
+# * an invalid address for data_ptr
+# for details, see the old undo_write_tdb code in undo_io.c
+test_e2undo_mke2fs_off 96255
+
+if [ -e "$test_name.failed" ]; then
+ echo "$test_name: $test_description: failed"
+else
+ echo "$test_name: $test_description: ok"
+ touch "$test_name.ok"
+fi