Merge branch 'jk/close-duped-fd-before-unlock-for-bundle'
When "git bundle" aborts due to an empty commit ranges
(i.e. resulting in an empty pack), it left a file descriptor to an
lockfile open, which resulted in leftover lockfile on Windows where
you cannot remove a file with an open file descriptor. This has
been corrected.
* jk/close-duped-fd-before-unlock-for-bundle:
bundle: dup() output descriptor closer to point-of-use
diff --git a/bundle.c b/bundle.c
index 1ef584b..88c3e16 100644
--- a/bundle.c
+++ b/bundle.c
@@ -243,7 +243,7 @@
}
-/* Write the pack data to bundle_fd, then close it if it is > 1. */
+/* Write the pack data to bundle_fd */
static int write_pack_data(int bundle_fd, struct rev_info *revs)
{
struct child_process pack_objects = CHILD_PROCESS_INIT;
@@ -256,6 +256,20 @@
pack_objects.in = -1;
pack_objects.out = bundle_fd;
pack_objects.git_cmd = 1;
+
+ /*
+ * start_command() will close our descriptor if it's >1. Duplicate it
+ * to avoid surprising the caller.
+ */
+ if (pack_objects.out > 1) {
+ pack_objects.out = dup(pack_objects.out);
+ if (pack_objects.out < 0) {
+ error_errno(_("unable to dup bundle descriptor"));
+ child_process_clear(&pack_objects);
+ return -1;
+ }
+ }
+
if (start_command(&pack_objects))
return error(_("Could not spawn pack-objects"));
@@ -421,21 +435,10 @@
bundle_to_stdout = !strcmp(path, "-");
if (bundle_to_stdout)
bundle_fd = 1;
- else {
+ else
bundle_fd = hold_lock_file_for_update(&lock, path,
LOCK_DIE_ON_ERROR);
- /*
- * write_pack_data() will close the fd passed to it,
- * but commit_lock_file() will also try to close the
- * lockfile's fd. So make a copy of the file
- * descriptor to avoid trying to close it twice.
- */
- bundle_fd = dup(bundle_fd);
- if (bundle_fd < 0)
- die_errno("unable to dup file descriptor");
- }
-
/* write signature */
write_or_die(bundle_fd, bundle_signature, strlen(bundle_signature));
@@ -463,10 +466,8 @@
goto err;
/* write pack */
- if (write_pack_data(bundle_fd, &revs)) {
- bundle_fd = -1; /* already closed by the above call */
+ if (write_pack_data(bundle_fd, &revs))
goto err;
- }
if (!bundle_to_stdout) {
if (commit_lock_file(&lock))
@@ -474,11 +475,7 @@
}
return 0;
err:
- if (!bundle_to_stdout) {
- if (0 <= bundle_fd)
- close(bundle_fd);
- rollback_lock_file(&lock);
- }
+ rollback_lock_file(&lock);
return -1;
}
diff --git a/t/t5607-clone-bundle.sh b/t/t5607-clone-bundle.sh
index 348d9b3..cf39e9e 100755
--- a/t/t5607-clone-bundle.sh
+++ b/t/t5607-clone-bundle.sh
@@ -71,4 +71,10 @@
git bundle verify bundle
'
+test_expect_success 'failed bundle creation does not leave cruft' '
+ # This fails because the bundle would be empty.
+ test_must_fail git bundle create fail.bundle master..master &&
+ test_path_is_missing fail.bundle.lock
+'
+
test_done
