From: Eric Sunshine <sunshine@sunshineco.com>
To: git@vger.kernel.org
Cc: Junio C Hamano <gitster@pobox.com>,
Duy Nguyen <pclouds@gmail.com>,
Michael J Gruber <git@drmicha.warpmail.net>,
Eric Sunshine <sunshine@sunshineco.com>
Subject: [PATCH v3 08/22] checkout: teach check_linked_checkout() about symbolic link HEAD
Date: Fri, 17 Jul 2015 19:00:03 -0400 [thread overview]
Message-ID: <1437174017-81687-9-git-send-email-sunshine@sunshineco.com> (raw)
In-Reply-To: <1437174017-81687-1-git-send-email-sunshine@sunshineco.com>
check_linked_checkout() only understands symref-style HEAD (i.e. "ref:
refs/heads/master"), however, HEAD may also be a an actual symbolic link
(on platforms which support it). To accurately detect if a branch is
checked out elsewhere, it needs to handle symbolic link HEAD, as well.
Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
---
No changes since v2.
builtin/checkout.c | 6 +++++-
t/t2025-worktree-add.sh | 8 ++++++++
2 files changed, 13 insertions(+), 1 deletion(-)
diff --git a/builtin/checkout.c b/builtin/checkout.c
index 6f4e492..f04dcaa 100644
--- a/builtin/checkout.c
+++ b/builtin/checkout.c
@@ -889,7 +889,11 @@ static void check_linked_checkout(const char *branch, const char *id)
else
strbuf_addf(&path, "%s/HEAD", get_git_common_dir());
- if (strbuf_read_file(&sb, path.buf, 0) >= 0 &&
+ if (!strbuf_readlink(&sb, path.buf, 0)) {
+ if (!starts_with(sb.buf, "refs/") ||
+ check_refname_format(sb.buf, 0))
+ goto done;
+ } else if (strbuf_read_file(&sb, path.buf, 0) >= 0 &&
starts_with(sb.buf, "ref:")) {
strbuf_remove(&sb, 0, strlen("ref:"));
strbuf_trim(&sb);
diff --git a/t/t2025-worktree-add.sh b/t/t2025-worktree-add.sh
index ead8aa2..9e30690 100755
--- a/t/t2025-worktree-add.sh
+++ b/t/t2025-worktree-add.sh
@@ -83,6 +83,14 @@ test_expect_success 'die the same branch is already checked out' '
)
'
+test_expect_success SYMLINKS 'die the same branch is already checked out (symlink)' '
+ head=$(git -C there rev-parse --git-path HEAD) &&
+ ref=$(git -C there symbolic-ref HEAD) &&
+ rm "$head" &&
+ ln -s "$ref" "$head" &&
+ test_must_fail git -C here checkout newmaster
+'
+
test_expect_success 'not die the same branch is already checked out' '
(
cd here &&
--
2.5.0.rc2.378.g0af52e8
next prev parent reply other threads:[~2015-07-17 23:02 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-17 22:59 [PATCH v3 00/22] rid git-checkout of too-intimate knowledge of new worktree Eric Sunshine
2015-07-17 22:59 ` [PATCH v3 01/22] checkout: avoid resolving HEAD unnecessarily Eric Sunshine
2015-07-17 22:59 ` [PATCH v3 02/22] checkout: name check_linked_checkouts() more meaningfully Eric Sunshine
2015-07-17 22:59 ` [PATCH v3 03/22] checkout: improve die_if_checked_out() robustness Eric Sunshine
2015-07-17 22:59 ` [PATCH v3 04/22] checkout: die_if_checked_out: simplify strbuf management Eric Sunshine
2015-07-17 23:00 ` [PATCH v3 05/22] checkout: generalize die_if_checked_out() branch name argument Eric Sunshine
2015-07-17 23:00 ` [PATCH v3 06/22] checkout: check_linked_checkout: improve "already checked out" aesthetic Eric Sunshine
2015-07-17 23:00 ` [PATCH v3 07/22] checkout: check_linked_checkout: simplify symref parsing Eric Sunshine
2015-07-17 23:00 ` Eric Sunshine [this message]
2015-07-17 23:00 ` [PATCH v3 09/22] branch: publish die_if_checked_out() Eric Sunshine
2015-07-17 23:00 ` [PATCH v3 10/22] worktree: improve worktree setup message Eric Sunshine
2015-07-17 23:00 ` [PATCH v3 11/22] worktree: simplify new branch (-b/-B) option checking Eric Sunshine
2015-07-17 23:00 ` [PATCH v3 12/22] worktree: introduce options container Eric Sunshine
2015-07-17 23:00 ` [PATCH v3 13/22] worktree: make --detach mutually exclusive with -b/-B Eric Sunshine
2015-07-17 23:00 ` [PATCH v3 14/22] worktree: add: suppress auto-vivication with --detach and no <branch> Eric Sunshine
2015-07-17 23:20 ` Eric Sunshine
2015-07-17 23:00 ` [PATCH v3 15/22] worktree: make branch creation distinct from worktree population Eric Sunshine
2015-07-17 23:00 ` [PATCH v3 16/22] worktree: elucidate environment variables intended for child processes Eric Sunshine
2015-07-17 23:00 ` [PATCH v3 17/22] worktree: add_worktree: construct worktree-population command locally Eric Sunshine
2015-07-17 23:00 ` [PATCH v3 18/22] worktree: detect branch-name/detached and error conditions locally Eric Sunshine
2015-07-17 23:00 ` [PATCH v3 19/22] worktree: make setup of new HEAD distinct from worktree population Eric Sunshine
2015-07-17 23:00 ` [PATCH v3 20/22] worktree: avoid resolving HEAD unnecessarily Eric Sunshine
2015-07-17 23:00 ` [PATCH v3 21/22] worktree: populate via "git reset --hard" rather than "git checkout" Eric Sunshine
2015-07-17 23:00 ` [PATCH v3 22/22] checkout: drop intimate knowledge of newly created worktree Eric Sunshine
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1437174017-81687-9-git-send-email-sunshine@sunshineco.com \
--to=sunshine@sunshineco.com \
--cc=git@drmicha.warpmail.net \
--cc=git@vger.kernel.org \
--cc=gitster@pobox.com \
--cc=pclouds@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).