[PATCH v3 8/8] WIP: receive.allowupdatestohidden
STALE3764d
From: Junio C Hamano <hidden>
Date: 2016-06-15 22:56:00
Subsystem:
documentation, the rest · Maintainers:
Jonathan Corbet, Linus Torvalds
This does not work yet, and for a good reason. As the side that pushes to a hidden ref never sees that the ref already exists, a request to update such a ref will come in the form of "please _create_ this ref and point it at this object", which will not pass the compare-and-swap based anti-race safety at the receiving end. Signed-off-by: Junio C Hamano <redacted> --- Documentation/config.txt | 6 ++++++ builtin/receive-pack.c | 9 ++++++++- t/t5516-fetch-push.sh | 24 ++++++++++++++++++++++++ 3 files changed, 38 insertions(+), 1 deletion(-)
diff --git a/Documentation/config.txt b/Documentation/config.txt
index 2dce021..8f13fc0 100644
--- a/Documentation/config.txt
+++ b/Documentation/config.txt@@ -1849,6 +1849,12 @@ receive.updateserverinfo:: If set to true, git-receive-pack will run git-update-server-info after receiving data from git-push and updating refs. +receive.allowupdatestohidden:: + When `transfer.hiderefs` is in effect, allow `receive-pack` + to accept a push request that asks to update or delete a + hidden ref (by default, such a request is rejected). + see also `transfer.hiderefs`. + remote.<name>.url:: The URL of a remote repository. See linkgit:git-fetch[1] or linkgit:git-push[1].
diff --git a/builtin/receive-pack.c b/builtin/receive-pack.c
index a8248d9..88500e7 100644
--- a/builtin/receive-pack.c
+++ b/builtin/receive-pack.c@@ -41,6 +41,7 @@ static int auto_gc = 1; static const char *head_name; static void *head_name_to_free; static int sent_capabilities; +static int allow_updates_to_hidden; static enum deny_action parse_deny_action(const char *var, const char *value) {
@@ -119,6 +120,11 @@ static int receive_pack_config(const char *var, const char *value, void *cb) return 0; } + if (strcmp(var, "receive.allowupdatestohidden") == 0) { + allow_updates_to_hidden = git_config_bool(var, value); + return 0; + } + return git_default_config(var, value, cb); }
@@ -726,7 +732,8 @@ static void execute_commands(struct command *commands, const char *unpacker_erro 0, &cmd)) set_connectivity_errors(commands); - reject_updates_to_hidden(commands); + if (!allow_updates_to_hidden) + reject_updates_to_hidden(commands); if (run_receive_hook(commands, pre_receive_hook, 0)) { for (cmd = commands; cmd; cmd = cmd->next) {
diff --git a/t/t5516-fetch-push.sh b/t/t5516-fetch-push.sh
index 522056f..4c8aef9 100755
--- a/t/t5516-fetch-push.sh
+++ b/t/t5516-fetch-push.sh@@ -1095,4 +1095,28 @@ test_expect_success 'push to update a hidden ref' ' check_push_result $the_first_commit hidden/three ' +test_expect_failure 'allow push to update a hidden ref' ' + mk_test heads/master hidden/one hidden/two hidden/three && + ( + cd testrepo && + git config transfer.hiderefs refs/hidden && + git config receive.allowupdatestohidden yes + ) && + + # push to unhidden ref succeeds normally + git push testrepo master:refs/heads/master && + check_push_result $the_commit heads/master && + + # push to update a hidden ref should succeed + git push testrepo master:refs/hidden/one && + check_push_result $the_commit heads/master && + + # push to delete a hidden ref should succeed + git push testrepo :refs/hidden/two && + ( + cd testrepo && + test_must_fail git show-ref -q refs/hidden/one + ) +' + test_done
--
1.8.1.2.589.ga9b91ac