Read HEAD from disk instead of relying on local variable
our_head_points_at, so that if earlier code fails to make HEAD
properly, it'll be detected.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx>
---
builtin/clone.c | 101 +++++++++++++++++++++++++++++++-----------------------
1 files changed, 58 insertions(+), 43 deletions(-)
diff --git a/builtin/clone.c b/builtin/clone.c
index 91862f7..98e3542 100644
--- a/builtin/clone.c
+++ b/builtin/clone.c
@@ -486,6 +486,63 @@ static void write_followtags(const struct ref *refs, const char *msg)
}
}
+static int checkout(void)
+{
+ unsigned char sha1[20];
+ char *head;
+ struct lock_file *lock_file;
+ struct unpack_trees_options opts;
+ struct tree *tree;
+ struct tree_desc t;
+ int err = 0, fd;
+
+ if (option_no_checkout)
+ return 0;
+
+ head = resolve_refdup("HEAD", sha1, 1, NULL);
+ if (!head) {
+ warning(_("remote HEAD refers to nonexistent ref, "
+ "unable to checkout.\n"));
+ return 0;
+ }
+ if (strcmp(head, "HEAD")) {
+ if (prefixcmp(head, "refs/heads/"))
+ die(_("HEAD not found below refs/heads!"));
+ }
+ free(head);
+
+ /* We need to be in the new work tree for the checkout */
+ setup_work_tree();
+
+ lock_file = xcalloc(1, sizeof(struct lock_file));
+ fd = hold_locked_index(lock_file, 1);
+
+ memset(&opts, 0, sizeof opts);
+ opts.update = 1;
+ opts.merge = 1;
+ opts.fn = oneway_merge;
+ opts.verbose_update = (option_verbosity > 0);
+ opts.src_index = &the_index;
+ opts.dst_index = &the_index;
+
+ tree = parse_tree_indirect(sha1);
+ parse_tree(tree);
+ init_tree_desc(&t, tree->buffer, tree->size);
+ unpack_trees(1, &t, &opts);
+
+ if (write_cache(fd, active_cache, active_nr) ||
+ commit_locked_index(lock_file))
+ die(_("unable to write new index file"));
+
+ err |= run_hook(NULL, "post-checkout", sha1_to_hex(null_sha1),
+ sha1_to_hex(sha1), "1", NULL);
+
+ if (!err && option_recursive)
+ err = run_command_v_opt(argv_submodule, RUN_GIT_CMD);
+
+ return err;
+}
+
static int write_one_config(const char *key, const char *value, void *data)
{
return git_config_set_multivar(key, value ? value : "true", "^$", 0);
@@ -766,13 +823,6 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
/* Source had detached HEAD pointing somewhere. */
update_ref(reflog_msg.buf, "HEAD", remote_head->old_sha1,
NULL, REF_NODEREF, DIE_ON_ERR);
- our_head_points_at = remote_head;
- } else {
- /* Nothing to checkout out */
- if (!option_no_checkout)
- warning(_("remote HEAD refers to nonexistent ref, "
- "unable to checkout.\n"));
- option_no_checkout = 1;
}
if (transport) {
@@ -780,42 +830,7 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
transport_disconnect(transport);
}
- if (!option_no_checkout) {
- struct lock_file *lock_file = xcalloc(1, sizeof(struct lock_file));
- struct unpack_trees_options opts;
- struct tree *tree;
- struct tree_desc t;
- int fd;
-
- /* We need to be in the new work tree for the checkout */
- setup_work_tree();
-
- fd = hold_locked_index(lock_file, 1);
-
- memset(&opts, 0, sizeof opts);
- opts.update = 1;
- opts.merge = 1;
- opts.fn = oneway_merge;
- opts.verbose_update = (option_verbosity > 0);
- opts.src_index = &the_index;
- opts.dst_index = &the_index;
-
- tree = parse_tree_indirect(our_head_points_at->old_sha1);
- parse_tree(tree);
- init_tree_desc(&t, tree->buffer, tree->size);
- unpack_trees(1, &t, &opts);
-
- if (write_cache(fd, active_cache, active_nr) ||
- commit_locked_index(lock_file))
- die(_("unable to write new index file"));
-
- err |= run_hook(NULL, "post-checkout", sha1_to_hex(null_sha1),
- sha1_to_hex(our_head_points_at->old_sha1), "1",
- NULL);
-
- if (!err && option_recursive)
- err = run_command_v_opt(argv_submodule, RUN_GIT_CMD);
- }
+ err = checkout();
strbuf_release(&reflog_msg);
strbuf_release(&branch_top);
--
1.7.3.1.256.g2539c.dirty
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