From: "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>
To: git@vger.kernel.org
Cc: "Junio C Hamano" <gitster@pobox.com>, "Jeff King" <peff@peff.net>,
"Taylor Blau" <me@ttaylorr.com>,
"Eric Sunshine" <sunshine@sunshineco.com>,
"Ævar Arnfjörð Bjarmason" <avarab@gmail.com>
Subject: [PATCH v2 5/6] usage.c + gc: add and use a die_message_errno()
Date: Tue, 7 Dec 2021 19:26:33 +0100 [thread overview]
Message-ID: <patch-v2-5.6-2b4a3910654-20211207T182419Z-avarab@gmail.com> (raw)
In-Reply-To: <cover-v2-0.6-00000000000-20211207T182419Z-avarab@gmail.com>
Change the "error: " output when we exit with 128 due to gc.log errors
to use a "fatal: " prefix instead. To do this add a
die_message_errno() a sibling function to the die_errno() added in a
preceding commit.
Before this we'd expect report_last_gc_error() to return -1 from
error_errno() in this case. It already treated a status of 0 and 1
specially. Let's just document that anything that's not 0 or 1 should
be returned.
We could also retain the "ret < 0" behavior here without hardcoding
128 by returning -128, and having the caller do a "return -ret", but I
think this makes more sense, and preserves the path from
die_message*()'s return value to the "return" without hardcoding
"128".
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
---
builtin/gc.c | 13 +++++++------
git-compat-util.h | 1 +
usage.c | 12 ++++++++++++
3 files changed, 20 insertions(+), 6 deletions(-)
diff --git a/builtin/gc.c b/builtin/gc.c
index 900ccfb8d48..8e60ef1eaba 100644
--- a/builtin/gc.c
+++ b/builtin/gc.c
@@ -470,7 +470,8 @@ static const char *lock_repo_for_gc(int force, pid_t* ret_pid)
/*
* Returns 0 if there was no previous error and gc can proceed, 1 if
* gc should not proceed due to an error in the last run. Prints a
- * message and returns -1 if an error occurred while reading gc.log
+ * message and returns with a non-[01] status code if an error occurred
+ * while reading gc.log
*/
static int report_last_gc_error(void)
{
@@ -484,7 +485,7 @@ static int report_last_gc_error(void)
if (errno == ENOENT)
goto done;
- ret = error_errno(_("cannot stat '%s'"), gc_log_path);
+ ret = die_message_errno(_("cannot stat '%s'"), gc_log_path);
goto done;
}
@@ -493,7 +494,7 @@ static int report_last_gc_error(void)
len = strbuf_read_file(&sb, gc_log_path, 0);
if (len < 0)
- ret = error_errno(_("cannot read '%s'"), gc_log_path);
+ ret = die_message_errno(_("cannot read '%s'"), gc_log_path);
else if (len > 0) {
/*
* A previous gc failed. Report the error, and don't
@@ -612,12 +613,12 @@ int cmd_gc(int argc, const char **argv, const char *prefix)
if (detach_auto) {
int ret = report_last_gc_error();
- if (ret < 0)
- /* an I/O error occurred, already reported */
- return 128;
if (ret == 1)
/* Last gc --auto failed. Skip this one. */
return 0;
+ else if (ret)
+ /* an I/O error occurred, already reported */
+ return ret;
if (lock_repo_for_gc(force, &pid))
return 0;
diff --git a/git-compat-util.h b/git-compat-util.h
index d5e495529c8..c6c6f7d6b51 100644
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -480,6 +480,7 @@ NORETURN void usagef(const char *err, ...) __attribute__((format (printf, 1, 2))
NORETURN void die(const char *err, ...) __attribute__((format (printf, 1, 2)));
NORETURN void die_errno(const char *err, ...) __attribute__((format (printf, 1, 2)));
int die_message(const char *err, ...) __attribute__((format (printf, 1, 2)));
+int die_message_errno(const char *err, ...) __attribute__((format (printf, 1, 2)));
int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
int error_errno(const char *err, ...) __attribute__((format (printf, 1, 2)));
void warning(const char *err, ...) __attribute__((format (printf, 1, 2)));
diff --git a/usage.c b/usage.c
index 76399ba8409..3d09e8eea48 100644
--- a/usage.c
+++ b/usage.c
@@ -233,6 +233,18 @@ int die_message(const char *err, ...)
return 128;
}
+#undef die_message_errno
+int die_message_errno(const char *fmt, ...)
+{
+ char buf[1024];
+ va_list params;
+
+ va_start(params, fmt);
+ die_message_routine(fmt_with_err(buf, sizeof(buf), fmt), params);
+ va_end(params);
+ return 128;
+}
+
#undef error_errno
int error_errno(const char *fmt, ...)
{
--
2.34.1.898.g5a552c2e5f0
next prev parent reply other threads:[~2021-12-07 18:26 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-06 16:55 [PATCH 0/4] usage API: Add and use die_message() Ævar Arnfjörð Bjarmason
2021-12-06 16:55 ` [PATCH 1/4] usage.c: add a die_message() routine Ævar Arnfjörð Bjarmason
2021-12-06 19:42 ` Junio C Hamano
2021-12-06 19:46 ` Junio C Hamano
2021-12-06 16:55 ` [PATCH 2/4] usage.c API users: use die_message() where appropriate Ævar Arnfjörð Bjarmason
2021-12-06 20:00 ` Junio C Hamano
2021-12-06 16:55 ` [PATCH 3/4] usage.c + gc: add and use a die_message_errno() Ævar Arnfjörð Bjarmason
2021-12-06 21:19 ` Junio C Hamano
2021-12-06 16:55 ` [PATCH 4/4] config API: don't use vreportf(), make it static in usage.c Ævar Arnfjörð Bjarmason
2021-12-06 21:26 ` Junio C Hamano
2021-12-07 18:05 ` Ævar Arnfjörð Bjarmason
2021-12-07 18:26 ` [PATCH v2 0/6] usage API: Add and use die_message() Ævar Arnfjörð Bjarmason
2021-12-07 18:26 ` [PATCH v2 1/6] usage.c: add a die_message() routine Ævar Arnfjörð Bjarmason
2021-12-07 18:26 ` [PATCH v2 2/6] usage.c API users: use die_message() for "fatal :" + exit 128 Ævar Arnfjörð Bjarmason
2021-12-07 18:26 ` [PATCH v2 3/6] usage.c API users: use die_message() for error() " Ævar Arnfjörð Bjarmason
2021-12-07 18:26 ` [PATCH v2 4/6] gc: return from cmd_gc(), don't call exit() Ævar Arnfjörð Bjarmason
2021-12-07 18:26 ` Ævar Arnfjörð Bjarmason [this message]
2021-12-07 18:26 ` [PATCH v2 6/6] config API: use get_error_routine(), not vreportf() Ævar Arnfjörð Bjarmason
2021-12-07 21:24 ` [PATCH v2 0/6] usage API: Add and use die_message() Junio C Hamano
2021-12-22 18:57 ` Jonathan Tan
2021-12-22 19:59 ` Junio C Hamano
2021-12-24 17:01 ` Ævar Arnfjörð Bjarmason
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