mirror of
https://github.com/git/git.git
synced 2024-10-31 22:37:54 +01:00
a64d080fff
The Git CodingGuidelines prefer the $(...) construct for command
substitution instead of using the backquotes `...`.
The backquoted form is the traditional method for command
substitution, and is supported by POSIX. However, all but the
simplest uses become complicated quickly. In particular, embedded
command substitutions and/or the use of double quotes require
careful escaping with the backslash character.
The patch was generated by:
for _f in $(find . -name "*.sh")
do
perl -i -pe 'BEGIN{undef $/;} s/`(.+?)`/\$(\1)/smg' "${_f}"
done
and then carefully proof-read.
Signed-off-by: Elia Pinto <gitter.spiros@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
314 lines
11 KiB
Bash
Executable file
314 lines
11 KiB
Bash
Executable file
#!/bin/sh
|
|
#
|
|
# Copyright (c) 2008 Nicolas Pitre
|
|
#
|
|
|
|
test_description='resilience to pack corruptions with redundant objects'
|
|
. ./test-lib.sh
|
|
|
|
# Note: the test objects are created with knowledge of their pack encoding
|
|
# to ensure good code path coverage, and to facilitate direct alteration
|
|
# later on. The assumed characteristics are:
|
|
#
|
|
# 1) blob_2 is a delta with blob_1 for base and blob_3 is a delta with blob2
|
|
# for base, such that blob_3 delta depth is 2;
|
|
#
|
|
# 2) the bulk of object data is uncompressible so the text part remains
|
|
# visible;
|
|
#
|
|
# 3) object header is always 2 bytes.
|
|
|
|
create_test_files() {
|
|
test-genrandom "foo" 2000 > file_1 &&
|
|
test-genrandom "foo" 1800 > file_2 &&
|
|
test-genrandom "foo" 1800 > file_3 &&
|
|
echo " base " >> file_1 &&
|
|
echo " delta1 " >> file_2 &&
|
|
echo " delta delta2 " >> file_3 &&
|
|
test-genrandom "bar" 150 >> file_2 &&
|
|
test-genrandom "baz" 100 >> file_3
|
|
}
|
|
|
|
create_new_pack() {
|
|
rm -rf .git &&
|
|
git init &&
|
|
blob_1=$(git hash-object -t blob -w file_1) &&
|
|
blob_2=$(git hash-object -t blob -w file_2) &&
|
|
blob_3=$(git hash-object -t blob -w file_3) &&
|
|
pack=$(printf "$blob_1\n$blob_2\n$blob_3\n" |
|
|
git pack-objects $@ .git/objects/pack/pack) &&
|
|
pack=".git/objects/pack/pack-${pack}" &&
|
|
git verify-pack -v ${pack}.pack
|
|
}
|
|
|
|
do_repack() {
|
|
pack=$(printf "$blob_1\n$blob_2\n$blob_3\n" |
|
|
git pack-objects $@ .git/objects/pack/pack) &&
|
|
pack=".git/objects/pack/pack-${pack}"
|
|
}
|
|
|
|
do_corrupt_object() {
|
|
ofs=$(git show-index < ${pack}.idx | grep $1 | cut -f1 -d" ") &&
|
|
ofs=$(($ofs + $2)) &&
|
|
chmod +w ${pack}.pack &&
|
|
dd of=${pack}.pack bs=1 conv=notrunc seek=$ofs &&
|
|
test_must_fail git verify-pack ${pack}.pack
|
|
}
|
|
|
|
printf '\0' > zero
|
|
|
|
test_expect_success \
|
|
'initial setup validation' \
|
|
'create_test_files &&
|
|
create_new_pack &&
|
|
git prune-packed &&
|
|
git cat-file blob $blob_1 > /dev/null &&
|
|
git cat-file blob $blob_2 > /dev/null &&
|
|
git cat-file blob $blob_3 > /dev/null'
|
|
|
|
test_expect_success \
|
|
'create corruption in header of first object' \
|
|
'do_corrupt_object $blob_1 0 < zero &&
|
|
test_must_fail git cat-file blob $blob_1 > /dev/null &&
|
|
test_must_fail git cat-file blob $blob_2 > /dev/null &&
|
|
test_must_fail git cat-file blob $blob_3 > /dev/null'
|
|
|
|
test_expect_success \
|
|
'... but having a loose copy allows for full recovery' \
|
|
'mv ${pack}.idx tmp &&
|
|
git hash-object -t blob -w file_1 &&
|
|
mv tmp ${pack}.idx &&
|
|
git cat-file blob $blob_1 > /dev/null &&
|
|
git cat-file blob $blob_2 > /dev/null &&
|
|
git cat-file blob $blob_3 > /dev/null'
|
|
|
|
test_expect_success \
|
|
'... and loose copy of first delta allows for partial recovery' \
|
|
'git prune-packed &&
|
|
test_must_fail git cat-file blob $blob_2 > /dev/null &&
|
|
mv ${pack}.idx tmp &&
|
|
git hash-object -t blob -w file_2 &&
|
|
mv tmp ${pack}.idx &&
|
|
test_must_fail git cat-file blob $blob_1 > /dev/null &&
|
|
git cat-file blob $blob_2 > /dev/null &&
|
|
git cat-file blob $blob_3 > /dev/null'
|
|
|
|
test_expect_success \
|
|
'create corruption in data of first object' \
|
|
'create_new_pack &&
|
|
git prune-packed &&
|
|
chmod +w ${pack}.pack &&
|
|
perl -i.bak -pe "s/ base /abcdef/" ${pack}.pack &&
|
|
test_must_fail git cat-file blob $blob_1 > /dev/null &&
|
|
test_must_fail git cat-file blob $blob_2 > /dev/null &&
|
|
test_must_fail git cat-file blob $blob_3 > /dev/null'
|
|
|
|
test_expect_success \
|
|
'... but having a loose copy allows for full recovery' \
|
|
'mv ${pack}.idx tmp &&
|
|
git hash-object -t blob -w file_1 &&
|
|
mv tmp ${pack}.idx &&
|
|
git cat-file blob $blob_1 > /dev/null &&
|
|
git cat-file blob $blob_2 > /dev/null &&
|
|
git cat-file blob $blob_3 > /dev/null'
|
|
|
|
test_expect_success \
|
|
'... and loose copy of second object allows for partial recovery' \
|
|
'git prune-packed &&
|
|
test_must_fail git cat-file blob $blob_2 > /dev/null &&
|
|
mv ${pack}.idx tmp &&
|
|
git hash-object -t blob -w file_2 &&
|
|
mv tmp ${pack}.idx &&
|
|
test_must_fail git cat-file blob $blob_1 > /dev/null &&
|
|
git cat-file blob $blob_2 > /dev/null &&
|
|
git cat-file blob $blob_3 > /dev/null'
|
|
|
|
test_expect_success \
|
|
'create corruption in header of first delta' \
|
|
'create_new_pack &&
|
|
git prune-packed &&
|
|
do_corrupt_object $blob_2 0 < zero &&
|
|
git cat-file blob $blob_1 > /dev/null &&
|
|
test_must_fail git cat-file blob $blob_2 > /dev/null &&
|
|
test_must_fail git cat-file blob $blob_3 > /dev/null'
|
|
|
|
test_expect_success \
|
|
'... but having a loose copy allows for full recovery' \
|
|
'mv ${pack}.idx tmp &&
|
|
git hash-object -t blob -w file_2 &&
|
|
mv tmp ${pack}.idx &&
|
|
git cat-file blob $blob_1 > /dev/null &&
|
|
git cat-file blob $blob_2 > /dev/null &&
|
|
git cat-file blob $blob_3 > /dev/null'
|
|
|
|
test_expect_success \
|
|
'... and then a repack "clears" the corruption' \
|
|
'do_repack &&
|
|
git prune-packed &&
|
|
git verify-pack ${pack}.pack &&
|
|
git cat-file blob $blob_1 > /dev/null &&
|
|
git cat-file blob $blob_2 > /dev/null &&
|
|
git cat-file blob $blob_3 > /dev/null'
|
|
|
|
test_expect_success \
|
|
'create corruption in data of first delta' \
|
|
'create_new_pack &&
|
|
git prune-packed &&
|
|
chmod +w ${pack}.pack &&
|
|
perl -i.bak -pe "s/ delta1 /abcdefgh/" ${pack}.pack &&
|
|
git cat-file blob $blob_1 > /dev/null &&
|
|
test_must_fail git cat-file blob $blob_2 > /dev/null &&
|
|
test_must_fail git cat-file blob $blob_3 > /dev/null'
|
|
|
|
test_expect_success \
|
|
'... but having a loose copy allows for full recovery' \
|
|
'mv ${pack}.idx tmp &&
|
|
git hash-object -t blob -w file_2 &&
|
|
mv tmp ${pack}.idx &&
|
|
git cat-file blob $blob_1 > /dev/null &&
|
|
git cat-file blob $blob_2 > /dev/null &&
|
|
git cat-file blob $blob_3 > /dev/null'
|
|
|
|
test_expect_success \
|
|
'... and then a repack "clears" the corruption' \
|
|
'do_repack &&
|
|
git prune-packed &&
|
|
git verify-pack ${pack}.pack &&
|
|
git cat-file blob $blob_1 > /dev/null &&
|
|
git cat-file blob $blob_2 > /dev/null &&
|
|
git cat-file blob $blob_3 > /dev/null'
|
|
|
|
test_expect_success \
|
|
'corruption in delta base reference of first delta (OBJ_REF_DELTA)' \
|
|
'create_new_pack &&
|
|
git prune-packed &&
|
|
do_corrupt_object $blob_2 2 < zero &&
|
|
git cat-file blob $blob_1 > /dev/null &&
|
|
test_must_fail git cat-file blob $blob_2 > /dev/null &&
|
|
test_must_fail git cat-file blob $blob_3 > /dev/null'
|
|
|
|
test_expect_success \
|
|
'... but having a loose copy allows for full recovery' \
|
|
'mv ${pack}.idx tmp &&
|
|
git hash-object -t blob -w file_2 &&
|
|
mv tmp ${pack}.idx &&
|
|
git cat-file blob $blob_1 > /dev/null &&
|
|
git cat-file blob $blob_2 > /dev/null &&
|
|
git cat-file blob $blob_3 > /dev/null'
|
|
|
|
test_expect_success \
|
|
'... and then a repack "clears" the corruption' \
|
|
'do_repack &&
|
|
git prune-packed &&
|
|
git verify-pack ${pack}.pack &&
|
|
git cat-file blob $blob_1 > /dev/null &&
|
|
git cat-file blob $blob_2 > /dev/null &&
|
|
git cat-file blob $blob_3 > /dev/null'
|
|
|
|
test_expect_success \
|
|
'corruption #0 in delta base reference of first delta (OBJ_OFS_DELTA)' \
|
|
'create_new_pack --delta-base-offset &&
|
|
git prune-packed &&
|
|
do_corrupt_object $blob_2 2 < zero &&
|
|
git cat-file blob $blob_1 > /dev/null &&
|
|
test_must_fail git cat-file blob $blob_2 > /dev/null &&
|
|
test_must_fail git cat-file blob $blob_3 > /dev/null'
|
|
|
|
test_expect_success \
|
|
'... but having a loose copy allows for full recovery' \
|
|
'mv ${pack}.idx tmp &&
|
|
git hash-object -t blob -w file_2 &&
|
|
mv tmp ${pack}.idx &&
|
|
git cat-file blob $blob_1 > /dev/null &&
|
|
git cat-file blob $blob_2 > /dev/null &&
|
|
git cat-file blob $blob_3 > /dev/null'
|
|
|
|
test_expect_success \
|
|
'... and then a repack "clears" the corruption' \
|
|
'do_repack --delta-base-offset &&
|
|
git prune-packed &&
|
|
git verify-pack ${pack}.pack &&
|
|
git cat-file blob $blob_1 > /dev/null &&
|
|
git cat-file blob $blob_2 > /dev/null &&
|
|
git cat-file blob $blob_3 > /dev/null'
|
|
|
|
test_expect_success \
|
|
'corruption #1 in delta base reference of first delta (OBJ_OFS_DELTA)' \
|
|
'create_new_pack --delta-base-offset &&
|
|
git prune-packed &&
|
|
printf "\001" | do_corrupt_object $blob_2 2 &&
|
|
git cat-file blob $blob_1 > /dev/null &&
|
|
test_must_fail git cat-file blob $blob_2 > /dev/null &&
|
|
test_must_fail git cat-file blob $blob_3 > /dev/null'
|
|
|
|
test_expect_success \
|
|
'... but having a loose copy allows for full recovery' \
|
|
'mv ${pack}.idx tmp &&
|
|
git hash-object -t blob -w file_2 &&
|
|
mv tmp ${pack}.idx &&
|
|
git cat-file blob $blob_1 > /dev/null &&
|
|
git cat-file blob $blob_2 > /dev/null &&
|
|
git cat-file blob $blob_3 > /dev/null'
|
|
|
|
test_expect_success \
|
|
'... and then a repack "clears" the corruption' \
|
|
'do_repack --delta-base-offset &&
|
|
git prune-packed &&
|
|
git verify-pack ${pack}.pack &&
|
|
git cat-file blob $blob_1 > /dev/null &&
|
|
git cat-file blob $blob_2 > /dev/null &&
|
|
git cat-file blob $blob_3 > /dev/null'
|
|
|
|
test_expect_success \
|
|
'... and a redundant pack allows for full recovery too' \
|
|
'do_corrupt_object $blob_2 2 < zero &&
|
|
git cat-file blob $blob_1 > /dev/null &&
|
|
test_must_fail git cat-file blob $blob_2 > /dev/null &&
|
|
test_must_fail git cat-file blob $blob_3 > /dev/null &&
|
|
mv ${pack}.idx tmp &&
|
|
git hash-object -t blob -w file_1 &&
|
|
git hash-object -t blob -w file_2 &&
|
|
printf "$blob_1\n$blob_2\n" | git pack-objects .git/objects/pack/pack &&
|
|
git prune-packed &&
|
|
mv tmp ${pack}.idx &&
|
|
git cat-file blob $blob_1 > /dev/null &&
|
|
git cat-file blob $blob_2 > /dev/null &&
|
|
git cat-file blob $blob_3 > /dev/null'
|
|
|
|
test_expect_success \
|
|
'corruption of delta base reference pointing to wrong object' \
|
|
'create_new_pack --delta-base-offset &&
|
|
git prune-packed &&
|
|
printf "\220\033" | do_corrupt_object $blob_3 2 &&
|
|
git cat-file blob $blob_1 >/dev/null &&
|
|
git cat-file blob $blob_2 >/dev/null &&
|
|
test_must_fail git cat-file blob $blob_3 >/dev/null'
|
|
|
|
test_expect_success \
|
|
'... but having a loose copy allows for full recovery' \
|
|
'mv ${pack}.idx tmp &&
|
|
git hash-object -t blob -w file_3 &&
|
|
mv tmp ${pack}.idx &&
|
|
git cat-file blob $blob_1 > /dev/null &&
|
|
git cat-file blob $blob_2 > /dev/null &&
|
|
git cat-file blob $blob_3 > /dev/null'
|
|
|
|
test_expect_success \
|
|
'... and then a repack "clears" the corruption' \
|
|
'do_repack --delta-base-offset --no-reuse-delta &&
|
|
git prune-packed &&
|
|
git verify-pack ${pack}.pack &&
|
|
git cat-file blob $blob_1 > /dev/null &&
|
|
git cat-file blob $blob_2 > /dev/null &&
|
|
git cat-file blob $blob_3 > /dev/null'
|
|
|
|
test_expect_success \
|
|
'corrupting header to have too small output buffer fails unpack' \
|
|
'create_new_pack &&
|
|
git prune-packed &&
|
|
printf "\262\001" | do_corrupt_object $blob_1 0 &&
|
|
test_must_fail git cat-file blob $blob_1 > /dev/null &&
|
|
test_must_fail git cat-file blob $blob_2 > /dev/null &&
|
|
test_must_fail git cat-file blob $blob_3 > /dev/null'
|
|
|
|
test_done
|