diff options
| author | Phillip Wood <phillip.wood@dunelm.org.uk> | 2022-01-26 16:05:38 +0300 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2022-01-26 23:08:52 +0300 |
| commit | 69f4c23009ee30faeb61a831f4265791c945783e (patch) | |
| tree | 4521a6bcadf828e73d54b9e5f30c1c686a2623d2 /reset.c | |
| parent | bd55eee04b698af6c10c77b24f88601814771ac8 (diff) | |
rebase: pass correct arguments to post-checkout hook
If a rebase started with "rebase [--apply|--merge] <upstream> <branch>"
detects that <upstream> is an ancestor of <branch> then it fast-forwards
and checks out <branch>. Unfortunately in that case it passed the null
oid as the first argument to the post-checkout hook rather than the oid
of HEAD.
A side effect of this change is that the call to update_ref() which
updates HEAD now always receives the old value of HEAD. This provides
protection against another process updating HEAD during the checkout.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'reset.c')
| -rw-r--r-- | reset.c | 18 |
1 files changed, 9 insertions, 9 deletions
@@ -18,7 +18,7 @@ int reset_head(struct repository *r, struct object_id *oid, const char *action, unsigned run_hook = flags & RESET_HEAD_RUN_POST_CHECKOUT_HOOK; unsigned refs_only = flags & RESET_HEAD_REFS_ONLY; unsigned update_orig_head = flags & RESET_ORIG_HEAD; - struct object_id head_oid; + struct object_id *head = NULL, head_oid; struct tree_desc desc[2] = { { NULL }, { NULL } }; struct lock_file lock = LOCK_INIT; struct unpack_trees_options unpack_tree_opts = { 0 }; @@ -26,8 +26,7 @@ int reset_head(struct repository *r, struct object_id *oid, const char *action, const char *reflog_action; struct strbuf msg = STRBUF_INIT; size_t prefix_len; - struct object_id *orig = NULL, oid_orig, - *old_orig = NULL, oid_old_orig; + struct object_id *old_orig = NULL, oid_old_orig; int ret = 0, nr = 0; if (switch_to_branch && !starts_with(switch_to_branch, "refs/")) @@ -38,7 +37,9 @@ int reset_head(struct repository *r, struct object_id *oid, const char *action, goto leave_reset_head; } - if ((!oid || !reset_hard) && get_oid("HEAD", &head_oid)) { + if (!get_oid("HEAD", &head_oid)) { + head = &head_oid; + } else if (!oid || !reset_hard) { ret = error(_("could not determine HEAD revision")); goto leave_reset_head; } @@ -98,13 +99,12 @@ reset_head_refs: if (update_orig_head) { if (!get_oid("ORIG_HEAD", &oid_old_orig)) old_orig = &oid_old_orig; - if (!get_oid("HEAD", &oid_orig)) { - orig = &oid_orig; + if (head) { if (!reflog_orig_head) { strbuf_addstr(&msg, "updating ORIG_HEAD"); reflog_orig_head = msg.buf; } - update_ref(reflog_orig_head, "ORIG_HEAD", orig, + update_ref(reflog_orig_head, "ORIG_HEAD", head, old_orig, 0, UPDATE_REFS_MSG_ON_ERR); } else if (old_orig) delete_ref(NULL, "ORIG_HEAD", old_orig, 0); @@ -116,7 +116,7 @@ reset_head_refs: reflog_head = msg.buf; } if (!switch_to_branch) - ret = update_ref(reflog_head, "HEAD", oid, orig, + ret = update_ref(reflog_head, "HEAD", oid, head, detach_head ? REF_NO_DEREF : 0, UPDATE_REFS_MSG_ON_ERR); else { @@ -128,7 +128,7 @@ reset_head_refs: } if (run_hook) run_hook_le(NULL, "post-checkout", - oid_to_hex(orig ? orig : null_oid()), + oid_to_hex(head ? head : null_oid()), oid_to_hex(oid), "1", NULL); leave_reset_head: |