Merge branch 'dt/cache-tree-repair'
Add a few more places in "commit" and "checkout" that make sure
that the cache-tree is fully populated in the index.
* dt/cache-tree-repair:
cache-tree: do not try to use an invalidated subtree info to build a tree
cache-tree: Write updated cache-tree after commit
cache-tree: subdirectory tests
test-dump-cache-tree: invalid trees are not errors
cache-tree: create/update cache-tree on checkout
diff --git a/builtin/checkout.c b/builtin/checkout.c
index f71e745..8afdf2b 100644
--- a/builtin/checkout.c
+++ b/builtin/checkout.c
@@ -552,6 +552,12 @@
}
}
+ if (!active_cache_tree)
+ active_cache_tree = cache_tree();
+
+ if (!cache_tree_fully_valid(active_cache_tree))
+ cache_tree_update(&the_index, WRITE_TREE_SILENT | WRITE_TREE_REPAIR);
+
if (write_locked_index(&the_index, lock_file, COMMIT_LOCK))
die(_("unable to write new index file"));
diff --git a/builtin/commit.c b/builtin/commit.c
index 5911447..41f481b 100644
--- a/builtin/commit.c
+++ b/builtin/commit.c
@@ -353,6 +353,13 @@
discard_cache();
read_cache_from(index_lock.filename);
+ if (update_main_cache_tree(WRITE_TREE_SILENT) == 0) {
+ if (reopen_lock_file(&index_lock) < 0)
+ die(_("unable to write index file"));
+ if (write_locked_index(&the_index, &index_lock, CLOSE_LOCK))
+ die(_("unable to update temporary index"));
+ } else
+ warning(_("Failed to update main cache tree"));
commit_style = COMMIT_NORMAL;
return index_lock.filename;
@@ -393,8 +400,12 @@
if (!only && !pathspec.nr) {
hold_locked_index(&index_lock, 1);
refresh_cache_or_die(refresh_flags);
- if (active_cache_changed) {
+ if (active_cache_changed
+ || !cache_tree_fully_valid(active_cache_tree)) {
update_main_cache_tree(WRITE_TREE_SILENT);
+ active_cache_changed = 1;
+ }
+ if (active_cache_changed) {
if (write_locked_index(&the_index, &index_lock,
COMMIT_LOCK))
die(_("unable to write new_index file"));
@@ -444,6 +455,7 @@
hold_locked_index(&index_lock, 1);
add_remove_files(&partial);
refresh_cache(REFRESH_QUIET);
+ update_main_cache_tree(WRITE_TREE_SILENT);
if (write_locked_index(&the_index, &index_lock, CLOSE_LOCK))
die(_("unable to write new_index file"));
diff --git a/cache-tree.c b/cache-tree.c
index c53f7de..75a54fd 100644
--- a/cache-tree.c
+++ b/cache-tree.c
@@ -246,9 +246,12 @@
struct strbuf buffer;
int missing_ok = flags & WRITE_TREE_MISSING_OK;
int dryrun = flags & WRITE_TREE_DRY_RUN;
+ int repair = flags & WRITE_TREE_REPAIR;
int to_invalidate = 0;
int i;
+ assert(!(dryrun && repair));
+
*skip_count = 0;
if (0 <= it->entry_count && has_sha1_file(it->sha1))
@@ -320,6 +323,7 @@
int pathlen, entlen;
const unsigned char *sha1;
unsigned mode;
+ int expected_missing = 0;
path = ce->name;
pathlen = ce_namelen(ce);
@@ -336,8 +340,10 @@
i += sub->count;
sha1 = sub->cache_tree->sha1;
mode = S_IFDIR;
- if (sub->cache_tree->entry_count < 0)
+ if (sub->cache_tree->entry_count < 0) {
to_invalidate = 1;
+ expected_missing = 1;
+ }
}
else {
sha1 = ce->sha1;
@@ -347,6 +353,8 @@
}
if (mode != S_IFGITLINK && !missing_ok && !has_sha1_file(sha1)) {
strbuf_release(&buffer);
+ if (expected_missing)
+ return -1;
return error("invalid object %06o %s for '%.*s'",
mode, sha1_to_hex(sha1), entlen+baselen, path);
}
@@ -381,7 +389,14 @@
#endif
}
- if (dryrun)
+ if (repair) {
+ unsigned char sha1[20];
+ hash_sha1_file(buffer.buf, buffer.len, tree_type, sha1);
+ if (has_sha1_file(sha1))
+ hashcpy(it->sha1, sha1);
+ else
+ to_invalidate = 1;
+ } else if (dryrun)
hash_sha1_file(buffer.buf, buffer.len, tree_type, it->sha1);
else if (write_sha1_file(buffer.buf, buffer.len, tree_type, it->sha1)) {
strbuf_release(&buffer);
diff --git a/cache-tree.h b/cache-tree.h
index b47ccec..aa7b3e4 100644
--- a/cache-tree.h
+++ b/cache-tree.h
@@ -39,6 +39,7 @@
#define WRITE_TREE_IGNORE_CACHE_TREE 2
#define WRITE_TREE_DRY_RUN 4
#define WRITE_TREE_SILENT 8
+#define WRITE_TREE_REPAIR 16
/* error return codes */
#define WRITE_TREE_UNREADABLE_INDEX (-1)
diff --git a/t/t0090-cache-tree.sh b/t/t0090-cache-tree.sh
index 6c33e28..f9648a8 100755
--- a/t/t0090-cache-tree.sh
+++ b/t/t0090-cache-tree.sh
@@ -8,7 +8,7 @@
. ./test-lib.sh
cmp_cache_tree () {
- test-dump-cache-tree >actual &&
+ test-dump-cache-tree | sed -e '/#(ref)/d' >actual &&
sed "s/$_x40/SHA/" <actual >filtered &&
test_cmp "$1" filtered
}
@@ -16,15 +16,40 @@
# We don't bother with actually checking the SHA1:
# test-dump-cache-tree already verifies that all existing data is
# correct.
-test_shallow_cache_tree () {
- printf "SHA (%d entries, 0 subtrees)\n" $(git ls-files|wc -l) >expect &&
+generate_expected_cache_tree_rec () {
+ dir="$1${1:+/}" &&
+ parent="$2" &&
+ # ls-files might have foo/bar, foo/bar/baz, and foo/bar/quux
+ # We want to count only foo because it's the only direct child
+ subtrees=$(git ls-files|grep /|cut -d / -f 1|uniq) &&
+ subtree_count=$(echo "$subtrees"|awk '$1 {++c} END {print c}') &&
+ entries=$(git ls-files|wc -l) &&
+ printf "SHA $dir (%d entries, %d subtrees)\n" "$entries" "$subtree_count" &&
+ for subtree in $subtrees
+ do
+ cd "$subtree"
+ generate_expected_cache_tree_rec "$dir$subtree" "$dir" || return 1
+ cd ..
+ done &&
+ dir=$parent
+}
+
+generate_expected_cache_tree () {
+ (
+ generate_expected_cache_tree_rec
+ )
+}
+
+test_cache_tree () {
+ generate_expected_cache_tree >expect &&
cmp_cache_tree expect
}
test_invalid_cache_tree () {
- echo "invalid (0 subtrees)" >expect &&
- printf "SHA #(ref) (%d entries, 0 subtrees)\n" $(git ls-files|wc -l) >>expect &&
- cmp_cache_tree expect
+ printf "invalid %s ()\n" "" "$@" >expect &&
+ test-dump-cache-tree |
+ sed -n -e "s/[0-9]* subtrees//" -e '/#(ref)/d' -e '/^invalid /p' >actual &&
+ test_cmp expect actual
}
test_no_cache_tree () {
@@ -32,26 +57,59 @@
cmp_cache_tree expect
}
-test_expect_failure 'initial commit has cache-tree' '
+test_expect_success 'initial commit has cache-tree' '
test_commit foo &&
- test_shallow_cache_tree
+ test_cache_tree
'
test_expect_success 'read-tree HEAD establishes cache-tree' '
git read-tree HEAD &&
- test_shallow_cache_tree
+ test_cache_tree
'
test_expect_success 'git-add invalidates cache-tree' '
test_when_finished "git reset --hard; git read-tree HEAD" &&
- echo "I changed this file" > foo &&
+ echo "I changed this file" >foo &&
git add foo &&
test_invalid_cache_tree
'
+test_expect_success 'git-add in subdir invalidates cache-tree' '
+ test_when_finished "git reset --hard; git read-tree HEAD" &&
+ mkdir dirx &&
+ echo "I changed this file" >dirx/foo &&
+ git add dirx/foo &&
+ test_invalid_cache_tree
+'
+
+cat >before <<\EOF
+SHA (3 entries, 2 subtrees)
+SHA dir1/ (1 entries, 0 subtrees)
+SHA dir2/ (1 entries, 0 subtrees)
+EOF
+
+cat >expect <<\EOF
+invalid (2 subtrees)
+invalid dir1/ (0 subtrees)
+SHA dir2/ (1 entries, 0 subtrees)
+EOF
+
+test_expect_success 'git-add in subdir does not invalidate sibling cache-tree' '
+ git tag no-children &&
+ test_when_finished "git reset --hard no-children; git read-tree HEAD" &&
+ mkdir dir1 dir2 &&
+ test_commit dir1/a &&
+ test_commit dir2/b &&
+ echo "I changed this file" >dir1/a &&
+ cmp_cache_tree before &&
+ echo "I changed this file" >dir1/a &&
+ git add dir1/a &&
+ cmp_cache_tree expect
+'
+
test_expect_success 'update-index invalidates cache-tree' '
test_when_finished "git reset --hard; git read-tree HEAD" &&
- echo "I changed this file" > foo &&
+ echo "I changed this file" >foo &&
git update-index --add foo &&
test_invalid_cache_tree
'
@@ -59,7 +117,7 @@
test_expect_success 'write-tree establishes cache-tree' '
test-scrap-cache-tree &&
git write-tree &&
- test_shallow_cache_tree
+ test_cache_tree
'
test_expect_success 'test-scrap-cache-tree works' '
@@ -70,24 +128,94 @@
test_expect_success 'second commit has cache-tree' '
test_commit bar &&
- test_shallow_cache_tree
+ test_cache_tree
+'
+
+test_expect_success 'commit --interactive gives cache-tree on partial commit' '
+ cat <<-\EOT >foo.c &&
+ int foo()
+ {
+ return 42;
+ }
+ int bar()
+ {
+ return 42;
+ }
+ EOT
+ git add foo.c &&
+ test_invalid_cache_tree &&
+ git commit -m "add a file" &&
+ test_cache_tree &&
+ cat <<-\EOT >foo.c &&
+ int foo()
+ {
+ return 43;
+ }
+ int bar()
+ {
+ return 44;
+ }
+ EOT
+ (echo p; echo 1; echo; echo s; echo n; echo y; echo q) |
+ git commit --interactive -m foo &&
+ test_cache_tree
+'
+
+test_expect_success 'commit in child dir has cache-tree' '
+ mkdir dir &&
+ >dir/child.t &&
+ git add dir/child.t &&
+ git commit -m dir/child.t &&
+ test_cache_tree
'
test_expect_success 'reset --hard gives cache-tree' '
test-scrap-cache-tree &&
git reset --hard &&
- test_shallow_cache_tree
+ test_cache_tree
'
test_expect_success 'reset --hard without index gives cache-tree' '
rm -f .git/index &&
git reset --hard &&
- test_shallow_cache_tree
+ test_cache_tree
'
-test_expect_failure 'checkout gives cache-tree' '
+test_expect_success 'checkout gives cache-tree' '
+ git tag current &&
git checkout HEAD^ &&
- test_shallow_cache_tree
+ test_cache_tree
+'
+
+test_expect_success 'checkout -b gives cache-tree' '
+ git checkout current &&
+ git checkout -b prev HEAD^ &&
+ test_cache_tree
+'
+
+test_expect_success 'checkout -B gives cache-tree' '
+ git checkout current &&
+ git checkout -B prev HEAD^ &&
+ test_cache_tree
+'
+
+test_expect_success 'partial commit gives cache-tree' '
+ git checkout -b partial no-children &&
+ test_commit one &&
+ test_commit two &&
+ echo "some change" >one.t &&
+ git add one.t &&
+ echo "some other change" >two.t &&
+ git commit two.t -m partial &&
+ test_cache_tree
+'
+
+test_expect_success 'no phantom error when switching trees' '
+ mkdir newdir &&
+ >newdir/one &&
+ git add newdir/one &&
+ git checkout 2>errors &&
+ ! test -s errors
'
test_done
diff --git a/test-dump-cache-tree.c b/test-dump-cache-tree.c
index 330ba4f..54c0872 100644
--- a/test-dump-cache-tree.c
+++ b/test-dump-cache-tree.c
@@ -26,16 +26,16 @@
return 0;
if (it->entry_count < 0) {
+ /* invalid */
dump_one(it, pfx, "");
dump_one(ref, pfx, "#(ref) ");
- if (it->subtree_nr != ref->subtree_nr)
- errs = 1;
}
else {
dump_one(it, pfx, "");
if (hashcmp(it->sha1, ref->sha1) ||
ref->entry_count != it->entry_count ||
ref->subtree_nr != it->subtree_nr) {
+ /* claims to be valid but is lying */
dump_one(ref, pfx, "#(ref) ");
errs = 1;
}
