diff options
| -rw-r--r-- | refs.c | 19 | ||||
| -rwxr-xr-x | t/t1400-update-ref.sh | 19 |
2 files changed, 32 insertions, 6 deletions
@@ -1119,10 +1119,16 @@ static int log_ref_write(const char *ref_name, const unsigned char *old_sha1, return 0; } +static int is_branch(const char *refname) +{ + return !strcmp(refname, "HEAD") || !prefixcmp(refname, "refs/heads/"); +} + int write_ref_sha1(struct ref_lock *lock, const unsigned char *sha1, const char *logmsg) { static char term = '\n'; + struct object *o; if (!lock) return -1; @@ -1130,6 +1136,19 @@ int write_ref_sha1(struct ref_lock *lock, unlock_ref(lock); return 0; } + o = parse_object(sha1); + if (!o) { + error("Trying to write ref %s with nonexistant object %s", + lock->ref_name, sha1_to_hex(sha1)); + unlock_ref(lock); + return -1; + } + if (o->type != OBJ_COMMIT && is_branch(lock->ref_name)) { + error("Trying to write non-commit object %s to branch %s", + sha1_to_hex(sha1), lock->ref_name); + unlock_ref(lock); + return -1; + } if (write_in_full(lock->lock_fd, sha1_to_hex(sha1), 40) != 40 || write_in_full(lock->lock_fd, &term, 1) != 1 || close(lock->lock_fd) < 0) { diff --git a/t/t1400-update-ref.sh b/t/t1400-update-ref.sh index a90824ba8a..71ab2dd0ee 100755 --- a/t/t1400-update-ref.sh +++ b/t/t1400-update-ref.sh @@ -7,12 +7,19 @@ test_description='Test git update-ref and basic ref logging' . ./test-lib.sh Z=0000000000000000000000000000000000000000 -A=1111111111111111111111111111111111111111 -B=2222222222222222222222222222222222222222 -C=3333333333333333333333333333333333333333 -D=4444444444444444444444444444444444444444 -E=5555555555555555555555555555555555555555 -F=6666666666666666666666666666666666666666 + +test_expect_success setup ' + + for name in A B C D E F + do + test_tick && + T=$(git write-tree) && + sha1=$(echo $name | git commit-tree $T) && + eval $name=$sha1 + done + +' + m=refs/heads/master n_dir=refs/heads/gu n=$n_dir/fixes |