diff options
| -rw-r--r-- | cache-tree.c | 4 | ||||
| -rw-r--r-- | read-cache.c | 5 | ||||
| -rwxr-xr-x | t/t1601-index-bogus.sh | 22 | ||||
| -rwxr-xr-x | t/t7009-filter-branch-null-sha1.sh | 6 |
4 files changed, 35 insertions, 2 deletions
diff --git a/cache-tree.c b/cache-tree.c index 345ea35963..34baa6d85a 100644 --- a/cache-tree.c +++ b/cache-tree.c @@ -354,7 +354,9 @@ static int update_one(struct cache_tree *it, entlen = pathlen - baselen; i++; } - if (mode != S_IFGITLINK && !missing_ok && !has_sha1_file(sha1)) { + + if (is_null_sha1(sha1) || + (mode != S_IFGITLINK && !missing_ok && !has_sha1_file(sha1))) { strbuf_release(&buffer); if (expected_missing) return -1; diff --git a/read-cache.c b/read-cache.c index 9054369dd0..2ca2cae617 100644 --- a/read-cache.c +++ b/read-cache.c @@ -2021,6 +2021,7 @@ static int do_write_index(struct index_state *istate, int newfd, int entries = istate->cache_nr; struct stat st; struct strbuf previous_name_buf = STRBUF_INIT, *previous_name; + int drop_cache_tree = 0; for (i = removed = extended = 0; i < entries; i++) { if (cache[i]->ce_flags & CE_REMOVE) @@ -2071,6 +2072,8 @@ static int do_write_index(struct index_state *istate, int newfd, warning(msg, ce->name); else return error(msg, ce->name); + + drop_cache_tree = 1; } if (ce_write_entry(&c, newfd, ce, previous_name) < 0) return -1; @@ -2089,7 +2092,7 @@ static int do_write_index(struct index_state *istate, int newfd, if (err) return -1; } - if (!strip_extensions && istate->cache_tree) { + if (!strip_extensions && !drop_cache_tree && istate->cache_tree) { struct strbuf sb = STRBUF_INIT; cache_tree_write(&sb, istate->cache_tree); diff --git a/t/t1601-index-bogus.sh b/t/t1601-index-bogus.sh new file mode 100755 index 0000000000..73cc9323cd --- /dev/null +++ b/t/t1601-index-bogus.sh @@ -0,0 +1,22 @@ +#!/bin/sh + +test_description='test handling of bogus index entries' +. ./test-lib.sh + +test_expect_success 'create tree with null sha1' ' + tree=$(printf "160000 commit $_z40\\tbroken\\n" | git mktree) +' + +test_expect_success 'read-tree refuses to read null sha1' ' + test_must_fail git read-tree $tree +' + +test_expect_success 'GIT_ALLOW_NULL_SHA1 overrides refusal' ' + GIT_ALLOW_NULL_SHA1=1 git read-tree $tree +' + +test_expect_success 'git write-tree refuses to write null sha1' ' + test_must_fail git write-tree +' + +test_done diff --git a/t/t7009-filter-branch-null-sha1.sh b/t/t7009-filter-branch-null-sha1.sh index c27f90f285..a8d9ec4987 100755 --- a/t/t7009-filter-branch-null-sha1.sh +++ b/t/t7009-filter-branch-null-sha1.sh @@ -31,6 +31,12 @@ test_expect_success 'setup: bring HEAD and index in sync' ' git commit -a -m "back to normal" ' +test_expect_success 'noop filter-branch complains' ' + test_must_fail git filter-branch \ + --force --prune-empty \ + --index-filter "true" +' + test_expect_success 'filter commands are still checked' ' test_must_fail git filter-branch \ --force --prune-empty \ |