From: "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>
To: git@vger.kernel.org
Cc: "Junio C Hamano" <gitster@pobox.com>,
"Glen Choo" <chooglen@google.com>,
"Atharva Raykar" <raykar.ath@gmail.com>,
"Prathamesh Chavan" <pc44800@gmail.com>,
"Ævar Arnfjörð Bjarmason" <avarab@gmail.com>
Subject: [PATCH v4 32/33] submodule--helper: libify even more "die" paths for module_update()
Date: Thu, 1 Sep 2022 01:18:14 +0200 [thread overview]
Message-ID: <patch-v4-32.33-3254a8ca6eb-20220831T230519Z-avarab@gmail.com> (raw)
In-Reply-To: <cover-v4-00.33-00000000000-20220831T230519Z-avarab@gmail.com>
As noted in a preceding commit the get_default_remote_submodule() and
remote_submodule_branch() functions would invoke die(), and thus leave
update_submodule() only partially lib-ified. We've addressed the
former of those in a preceding commit, let's now address the latter.
In addition to lib-ifying the function this fixes a potential (but
obscure) segfault introduced by a logic error in
1012a5cbc3f (submodule--helper run-update-procedure: learn --remote,
2022-03-04):
We were assuming that remote_submodule_branch() would always return
non-NULL, but if the submodule_from_path() call in that function fails
we'll return NULL. See its introduction in
92bbe7ccf1f (submodule--helper: add remote-branch helper,
2016-08-03). I.e. we'd previously have segfaulted in the xstrfmt()
call in update_submodule() seen in the context.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
---
builtin/submodule--helper.c | 41 ++++++++++++++++++++++---------------
1 file changed, 25 insertions(+), 16 deletions(-)
diff --git a/builtin/submodule--helper.c b/builtin/submodule--helper.c
index 9de3a3c921a..3f822eac3a1 100644
--- a/builtin/submodule--helper.c
+++ b/builtin/submodule--helper.c
@@ -2268,42 +2268,49 @@ static int run_update_procedure(const struct update_data *ud)
return run_update_command(ud, subforce);
}
-static const char *remote_submodule_branch(const char *path)
+static int remote_submodule_branch(const char *path, const char **branch)
{
const struct submodule *sub;
- const char *branch = NULL;
char *key;
+ *branch = NULL;
sub = submodule_from_path(the_repository, null_oid(), path);
if (!sub)
- return NULL;
+ return die_message(_("could not initialize submodule at path '%s'"),
+ path);
key = xstrfmt("submodule.%s.branch", sub->name);
- if (repo_config_get_string_tmp(the_repository, key, &branch))
- branch = sub->branch;
+ if (repo_config_get_string_tmp(the_repository, key, branch))
+ *branch = sub->branch;
free(key);
- if (!branch)
- return "HEAD";
+ if (!*branch) {
+ *branch = "HEAD";
+ return 0;
+ }
- if (!strcmp(branch, ".")) {
+ if (!strcmp(*branch, ".")) {
const char *refname = resolve_ref_unsafe("HEAD", 0, NULL, NULL);
if (!refname)
- die(_("No such ref: %s"), "HEAD");
+ return die_message(_("No such ref: %s"), "HEAD");
/* detached HEAD */
if (!strcmp(refname, "HEAD"))
- die(_("Submodule (%s) branch configured to inherit "
- "branch from superproject, but the superproject "
- "is not on any branch"), sub->name);
+ return die_message(_("Submodule (%s) branch configured to inherit "
+ "branch from superproject, but the superproject "
+ "is not on any branch"), sub->name);
if (!skip_prefix(refname, "refs/heads/", &refname))
- die(_("Expecting a full ref name, got %s"), refname);
- return refname;
+ return die_message(_("Expecting a full ref name, got %s"),
+ refname);
+
+ *branch = refname;
+ return 0;
}
- return branch;
+ /* Our "branch" is coming from repo_config_get_string_tmp() */
+ return 0;
}
static int ensure_core_worktree(const char *path)
@@ -2439,7 +2446,9 @@ static int update_submodule(struct update_data *update_data)
code = get_default_remote_submodule(update_data->sm_path, &remote_name);
if (code)
return code;
- branch = remote_submodule_branch(update_data->sm_path);
+ code = remote_submodule_branch(update_data->sm_path, &branch);
+ if (code)
+ return code;
remote_ref = xstrfmt("refs/remotes/%s/%s", remote_name, branch);
if (!update_data->nofetch) {
--
2.37.3.1420.g76f8a3d556c
next prev parent reply other threads:[~2022-08-31 23:19 UTC|newest]
Thread overview: 142+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-28 16:16 [PATCH 00/20] submodule--helper: add tests, rm dead code, refactor & leak prep Ævar Arnfjörð Bjarmason
2022-07-28 16:16 ` [PATCH 01/20] submodule tests: test usage behavior Ævar Arnfjörð Bjarmason
2022-07-29 20:30 ` Glen Choo
2022-07-28 16:16 ` [PATCH 02/20] submodule tests: test for "add <repository> <abs-path>" Ævar Arnfjörð Bjarmason
2022-07-28 16:16 ` [PATCH 03/20] submodule--helper: remove unused "name" helper Ævar Arnfjörð Bjarmason
2022-07-28 16:16 ` [PATCH 04/20] submodule--helper: remove unused "list" helper Ævar Arnfjörð Bjarmason
2022-07-29 21:31 ` Glen Choo
2022-07-28 16:16 ` [PATCH 05/20] test-tool submodule-config: remove unused "--url" handling Ævar Arnfjörð Bjarmason
2022-07-28 16:16 ` [PATCH 06/20] submodule--helper: move "is-active" to a test-tool Ævar Arnfjörð Bjarmason
2022-07-29 21:45 ` Glen Choo
2022-07-28 16:16 ` [PATCH 07/20] submodule--helper: move "check-name" " Ævar Arnfjörð Bjarmason
2022-07-29 21:55 ` Glen Choo
2022-07-28 16:16 ` [PATCH 08/20] submodule--helper: move "resolve-relative-url-test" " Ævar Arnfjörð Bjarmason
2022-07-29 21:58 ` Glen Choo
2022-07-28 16:16 ` [PATCH 09/20] submodule--helper style: don't separate declared variables with \n\n Ævar Arnfjörð Bjarmason
2022-07-28 16:16 ` [PATCH 10/20] submodule--helper style: add \n\n after variable declarations Ævar Arnfjörð Bjarmason
2022-07-28 16:16 ` [PATCH 11/20] submodule--helper: replace memset() with { 0 }-initialization Ævar Arnfjörð Bjarmason
2022-07-28 16:16 ` [PATCH 12/20] submodule--helper: convert a strbuf_detach() to xstrfmt() Ævar Arnfjörð Bjarmason
2022-07-28 16:16 ` [PATCH 13/20] submodule--helper: stop conflating "sb" in clone_submodule() Ævar Arnfjörð Bjarmason
2022-07-29 17:08 ` Glen Choo
2022-07-28 16:16 ` [PATCH 14/20] submodule--helper: pass a "const struct module_clone_data" to clone_submodule() Ævar Arnfjörð Bjarmason
2022-07-29 22:09 ` Glen Choo
2022-08-01 15:05 ` Ævar Arnfjörð Bjarmason
2022-07-28 16:17 ` [PATCH 15/20] submodule--helper: add "const" to copy of "update_data" Ævar Arnfjörð Bjarmason
2022-07-28 16:17 ` [PATCH 16/20] submodule--helper: refactor "errmsg_str" to be a "struct strbuf" Ævar Arnfjörð Bjarmason
2022-07-28 16:17 ` [PATCH 17/20] submodule--helper: rename "int res" to "int ret" Ævar Arnfjörð Bjarmason
2022-07-28 16:17 ` [PATCH 18/20] submodule--helper: add skeleton "goto cleanup" to update_submodule() Ævar Arnfjörð Bjarmason
2022-07-28 16:17 ` [PATCH 19/20] submodule--helper: don't exit() on failure, return Ævar Arnfjörð Bjarmason
2022-07-29 22:23 ` Glen Choo
2022-07-28 16:17 ` [PATCH 20/20] submodule--helper: fix bad config API usage Ævar Arnfjörð Bjarmason
2022-07-29 22:52 ` [PATCH 00/20] submodule--helper: add tests, rm dead code, refactor & leak prep Glen Choo
2022-08-02 15:45 ` [PATCH v2 00/28] " Ævar Arnfjörð Bjarmason
2022-08-02 15:45 ` [PATCH v2 01/28] submodule tests: test usage behavior Ævar Arnfjörð Bjarmason
2022-08-02 22:30 ` Glen Choo
2022-08-02 15:45 ` [PATCH v2 02/28] submodule tests: test for "add <repository> <abs-path>" Ævar Arnfjörð Bjarmason
2022-08-02 15:45 ` [PATCH v2 03/28] submodule--helper: remove unused "name" helper Ævar Arnfjörð Bjarmason
2022-08-02 15:45 ` [PATCH v2 04/28] submodule--helper: remove unused "list" helper Ævar Arnfjörð Bjarmason
2022-08-02 15:45 ` [PATCH v2 05/28] test-tool submodule-config: remove unused "--url" handling Ævar Arnfjörð Bjarmason
2022-08-02 15:45 ` [PATCH v2 06/28] submodule--helper: move "is-active" to a test-tool Ævar Arnfjörð Bjarmason
2022-08-02 15:45 ` [PATCH v2 07/28] submodule--helper: move "check-name" " Ævar Arnfjörð Bjarmason
2022-08-02 15:45 ` [PATCH v2 08/28] submodule--helper: move "resolve-relative-url-test" " Ævar Arnfjörð Bjarmason
2022-08-02 22:32 ` Glen Choo
2022-08-02 15:45 ` [PATCH v2 09/28] submodule--helper style: don't separate declared variables with \n\n Ævar Arnfjörð Bjarmason
2022-08-02 15:45 ` [PATCH v2 10/28] submodule--helper style: add \n\n after variable declarations Ævar Arnfjörð Bjarmason
2022-08-02 15:45 ` [PATCH v2 11/28] submodule--helper: replace memset() with { 0 }-initialization Ævar Arnfjörð Bjarmason
2022-08-02 15:45 ` [PATCH v2 12/28] submodule--helper: use xstrfmt() in clone_submodule() Ævar Arnfjörð Bjarmason
2022-08-02 15:45 ` [PATCH v2 13/28] submodule--helper: move "sb" in clone_submodule() to its own scope Ævar Arnfjörð Bjarmason
2022-08-02 15:45 ` [PATCH v2 14/28] submodule--helper: pass a "const struct module_clone_data" to clone_submodule() Ævar Arnfjörð Bjarmason
2022-08-02 15:45 ` [PATCH v2 15/28] submodule--helper: add "const" to copy of "update_data" Ævar Arnfjörð Bjarmason
2022-08-02 15:46 ` [PATCH v2 16/28] submodule--helper: refactor "errmsg_str" to be a "struct strbuf" Ævar Arnfjörð Bjarmason
2022-08-02 15:46 ` [PATCH v2 17/28] submodule--helper: don't redundantly check "else if (res)" Ævar Arnfjörð Bjarmason
2022-08-02 15:46 ` [PATCH v2 18/28] submodule--helper: rename "int res" to "int ret" Ævar Arnfjörð Bjarmason
2022-08-02 15:46 ` [PATCH v2 19/28] submodule--helper: return "ret", not "1" from update_submodule() Ævar Arnfjörð Bjarmason
2022-08-02 15:46 ` [PATCH v2 20/28] submodule--helper: add missing braces to "else" arm Ævar Arnfjörð Bjarmason
2022-08-02 15:46 ` [PATCH v2 21/28] submodule--helper: don't call submodule_strategy_to_string() in BUG() Ævar Arnfjörð Bjarmason
2022-08-02 23:08 ` Glen Choo
2022-08-02 15:46 ` [PATCH v2 22/28] submodule--helper: move submodule_strategy_to_string() to only user Ævar Arnfjörð Bjarmason
2022-08-02 23:30 ` Glen Choo
2022-08-03 13:06 ` Ævar Arnfjörð Bjarmason
2022-08-02 15:46 ` [PATCH v2 23/28] submodule--helper: use "code" in run_update_command() Ævar Arnfjörð Bjarmason
2022-08-02 15:46 ` [PATCH v2 24/28] submodule--helper: don't exit() on failure, return Ævar Arnfjörð Bjarmason
2022-08-02 15:46 ` [PATCH v2 25/28] submodule--helper: libify determine_submodule_update_strategy() Ævar Arnfjörð Bjarmason
2022-08-02 15:46 ` [PATCH v2 26/28] submodule--helper: libify "must_die_on_failure" code paths Ævar Arnfjörð Bjarmason
2022-08-03 4:37 ` Glen Choo
2022-08-02 15:46 ` [PATCH v2 27/28] submodule--helper: libify "must_die_on_failure" code paths (for die) Ævar Arnfjörð Bjarmason
2022-08-03 4:32 ` Glen Choo
2022-08-02 15:46 ` [PATCH v2 28/28] submodule--helper: fix bad config API usage Ævar Arnfjörð Bjarmason
2022-08-21 13:57 ` [PATCH v3 00/32] submodule--helper: add tests, rm dead code, refactor & leak prep Ævar Arnfjörð Bjarmason
2022-08-21 13:57 ` [PATCH v3 01/32] submodule tests: test usage behavior Ævar Arnfjörð Bjarmason
2022-08-23 22:42 ` Glen Choo
2022-08-21 13:57 ` [PATCH v3 02/32] submodule tests: test for "add <repository> <abs-path>" Ævar Arnfjörð Bjarmason
2022-08-21 13:57 ` [PATCH v3 03/32] submodule--helper: remove unused "name" helper Ævar Arnfjörð Bjarmason
2022-08-21 13:57 ` [PATCH v3 04/32] submodule--helper: remove unused "list" helper Ævar Arnfjörð Bjarmason
2022-08-21 13:57 ` [PATCH v3 05/32] test-tool submodule-config: remove unused "--url" handling Ævar Arnfjörð Bjarmason
2022-08-21 13:57 ` [PATCH v3 06/32] submodule--helper: move "is-active" to a test-tool Ævar Arnfjörð Bjarmason
2022-08-21 13:57 ` [PATCH v3 07/32] submodule--helper: move "check-name" " Ævar Arnfjörð Bjarmason
2022-08-21 13:57 ` [PATCH v3 08/32] submodule--helper: move "resolve-relative-url-test" " Ævar Arnfjörð Bjarmason
2022-08-21 13:57 ` [PATCH v3 09/32] submodule--helper style: don't separate declared variables with \n\n Ævar Arnfjörð Bjarmason
2022-08-21 13:57 ` [PATCH v3 10/32] submodule--helper style: add \n\n after variable declarations Ævar Arnfjörð Bjarmason
2022-08-21 13:57 ` [PATCH v3 11/32] submodule--helper: replace memset() with { 0 }-initialization Ævar Arnfjörð Bjarmason
2022-08-21 13:57 ` [PATCH v3 12/32] submodule--helper: use xstrfmt() in clone_submodule() Ævar Arnfjörð Bjarmason
2022-08-21 13:57 ` [PATCH v3 13/32] submodule--helper: move "sb" in clone_submodule() to its own scope Ævar Arnfjörð Bjarmason
2022-08-21 13:57 ` [PATCH v3 14/32] submodule--helper: add "const" to passed "module_clone_data" Ævar Arnfjörð Bjarmason
2022-08-21 13:57 ` [PATCH v3 15/32] submodule--helper: add "const" to copy of "update_data" Ævar Arnfjörð Bjarmason
2022-08-21 13:57 ` [PATCH v3 16/32] submodule--helper: refactor "errmsg_str" to be a "struct strbuf" Ævar Arnfjörð Bjarmason
2022-08-21 13:57 ` [PATCH v3 17/32] submodule--helper: don't redundantly check "else if (res)" Ævar Arnfjörð Bjarmason
2022-08-21 16:12 ` Eric Sunshine
2022-08-21 13:57 ` [PATCH v3 18/32] submodule--helper: rename "int res" to "int ret" Ævar Arnfjörð Bjarmason
2022-08-21 13:57 ` [PATCH v3 19/32] submodule--helper: return "ret", not "1" from update_submodule() Ævar Arnfjörð Bjarmason
2022-08-21 13:57 ` [PATCH v3 20/32] submodule--helper: add missing braces to "else" arm Ævar Arnfjörð Bjarmason
2022-08-21 13:57 ` [PATCH v3 21/32] submodule--helper: don't call submodule_strategy_to_string() in BUG() Ævar Arnfjörð Bjarmason
2022-08-21 13:57 ` [PATCH v3 22/32] submodule API: don't handle SM_..{UNSPECIFIED,COMMAND} in to_string() Ævar Arnfjörð Bjarmason
2022-08-21 13:57 ` [PATCH v3 23/32] submodule--helper: use "code" in run_update_command() Ævar Arnfjörð Bjarmason
2022-08-21 13:57 ` [PATCH v3 24/32] submodule--helper: don't exit() on failure, return Ævar Arnfjörð Bjarmason
2022-08-21 13:57 ` [PATCH v3 25/32] submodule--helper: libify determine_submodule_update_strategy() Ævar Arnfjörð Bjarmason
2022-08-21 13:57 ` [PATCH v3 26/32] submodule--helper: libify "must_die_on_failure" code paths Ævar Arnfjörð Bjarmason
2022-08-21 13:57 ` [PATCH v3 27/32] submodule--helper update: don't override 'checkout' exit code Ævar Arnfjörð Bjarmason
2022-08-21 13:57 ` [PATCH v3 28/32] submodule--helper: libify "must_die_on_failure" code paths (for die) Ævar Arnfjörð Bjarmason
2022-08-23 23:27 ` Glen Choo
2022-08-21 13:57 ` [PATCH v3 29/32] submodule--helper: check repo{_submodule,}_init() return values Ævar Arnfjörð Bjarmason
2022-08-23 23:38 ` Glen Choo
2022-08-21 13:57 ` [PATCH v3 30/32] submodule--helper: libify more "die" paths for module_update() Ævar Arnfjörð Bjarmason
2022-08-24 0:07 ` Glen Choo
2022-08-21 13:57 ` [PATCH v3 31/32] submodule--helper: libify even " Ævar Arnfjörð Bjarmason
2022-08-24 0:12 ` Glen Choo
2022-08-21 13:57 ` [PATCH v3 32/32] submodule--helper: fix bad config API usage Ævar Arnfjörð Bjarmason
2022-08-31 23:17 ` [PATCH v4 00/33] submodule--helper: add tests, rm dead code, refactor & leak prep Ævar Arnfjörð Bjarmason
2022-08-31 23:17 ` [PATCH v4 01/33] submodule tests: test usage behavior Ævar Arnfjörð Bjarmason
2022-08-31 23:17 ` [PATCH v4 02/33] submodule tests: test for "add <repository> <abs-path>" Ævar Arnfjörð Bjarmason
2022-08-31 23:17 ` [PATCH v4 03/33] submodule--helper: remove unused "name" helper Ævar Arnfjörð Bjarmason
2022-08-31 23:17 ` [PATCH v4 04/33] submodule--helper: remove unused "list" helper Ævar Arnfjörð Bjarmason
2022-08-31 23:17 ` [PATCH v4 05/33] test-tool submodule-config: remove unused "--url" handling Ævar Arnfjörð Bjarmason
2022-08-31 23:17 ` [PATCH v4 06/33] submodule--helper: move "is-active" to a test-tool Ævar Arnfjörð Bjarmason
2022-08-31 23:17 ` [PATCH v4 07/33] submodule--helper: move "check-name" " Ævar Arnfjörð Bjarmason
2022-08-31 23:17 ` [PATCH v4 08/33] submodule--helper: move "resolve-relative-url-test" " Ævar Arnfjörð Bjarmason
2022-08-31 23:17 ` [PATCH v4 09/33] submodule--helper style: don't separate declared variables with \n\n Ævar Arnfjörð Bjarmason
2022-08-31 23:17 ` [PATCH v4 10/33] submodule--helper style: add \n\n after variable declarations Ævar Arnfjörð Bjarmason
2022-08-31 23:17 ` [PATCH v4 11/33] submodule--helper: replace memset() with { 0 }-initialization Ævar Arnfjörð Bjarmason
2022-08-31 23:17 ` [PATCH v4 12/33] submodule--helper: use xstrfmt() in clone_submodule() Ævar Arnfjörð Bjarmason
2022-08-31 23:17 ` [PATCH v4 13/33] submodule--helper: move "sb" in clone_submodule() to its own scope Ævar Arnfjörð Bjarmason
2022-08-31 23:17 ` [PATCH v4 14/33] submodule--helper: add "const" to passed "module_clone_data" Ævar Arnfjörð Bjarmason
2022-08-31 23:17 ` [PATCH v4 15/33] submodule--helper: add "const" to copy of "update_data" Ævar Arnfjörð Bjarmason
2022-08-31 23:17 ` [PATCH v4 16/33] submodule--helper: add "const" to passed "struct update_data" Ævar Arnfjörð Bjarmason
2022-08-31 23:17 ` [PATCH v4 17/33] submodule--helper: refactor "errmsg_str" to be a "struct strbuf" Ævar Arnfjörð Bjarmason
2022-08-31 23:18 ` [PATCH v4 18/33] submodule--helper: don't redundantly check "else if (res)" Ævar Arnfjörð Bjarmason
2022-08-31 23:18 ` [PATCH v4 19/33] submodule--helper: rename "int res" to "int ret" Ævar Arnfjörð Bjarmason
2022-08-31 23:18 ` [PATCH v4 20/33] submodule--helper: return "ret", not "1" from update_submodule() Ævar Arnfjörð Bjarmason
2022-08-31 23:18 ` [PATCH v4 21/33] submodule--helper: add missing braces to "else" arm Ævar Arnfjörð Bjarmason
2022-08-31 23:18 ` [PATCH v4 22/33] submodule--helper: don't call submodule_strategy_to_string() in BUG() Ævar Arnfjörð Bjarmason
2022-08-31 23:18 ` [PATCH v4 23/33] submodule API: don't handle SM_..{UNSPECIFIED,COMMAND} in to_string() Ævar Arnfjörð Bjarmason
2022-08-31 23:18 ` [PATCH v4 24/33] submodule--helper: use "code" in run_update_command() Ævar Arnfjörð Bjarmason
2022-08-31 23:18 ` [PATCH v4 25/33] submodule--helper: don't exit() on failure, return Ævar Arnfjörð Bjarmason
2022-08-31 23:18 ` [PATCH v4 26/33] submodule--helper: libify determine_submodule_update_strategy() Ævar Arnfjörð Bjarmason
2022-08-31 23:18 ` [PATCH v4 27/33] submodule--helper: libify "must_die_on_failure" code paths Ævar Arnfjörð Bjarmason
2022-08-31 23:18 ` [PATCH v4 28/33] submodule--helper update: don't override 'checkout' exit code Ævar Arnfjörð Bjarmason
2022-08-31 23:18 ` [PATCH v4 29/33] submodule--helper: libify "must_die_on_failure" code paths (for die) Ævar Arnfjörð Bjarmason
2022-08-31 23:18 ` [PATCH v4 30/33] submodule--helper: check repo{_submodule,}_init() return values Ævar Arnfjörð Bjarmason
2022-08-31 23:18 ` [PATCH v4 31/33] submodule--helper: libify more "die" paths for module_update() Ævar Arnfjörð Bjarmason
2022-09-01 20:55 ` Glen Choo
2022-08-31 23:18 ` Ævar Arnfjörð Bjarmason [this message]
2022-08-31 23:18 ` [PATCH v4 33/33] submodule--helper: fix bad config API usage Ævar Arnfjörð Bjarmason
2022-09-01 20:59 ` [PATCH v4 00/33] submodule--helper: add tests, rm dead code, refactor & leak prep Glen Choo
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