systemd/SOURCES/1200-tree-wide-check-more-log-message-format-in-log_struc.patch

55 lines
2.2 KiB
Diff

From b0134d872f6f7dd6b310d4791cb10dd78c0126fe Mon Sep 17 00:00:00 2001
From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Tue, 18 Mar 2025 15:50:43 +0900
Subject: [PATCH] tree-wide: check more log message format in log_struct() and
friends
This introduce LOG_ITEM() macro that checks arbitrary formats in
log_struct().
Then, drop _printf_ attribute from log_struct_internal(), as it does not
help so much, and compiler checked only the first format string.
Hopefully, this silences false-positive warnings by Coverity.
[dtardon: Backported just the new macros, not their use across the
source tree. I could easily avoid doing it at all, but the macros might
be useful for future backports.]
(cherry picked from commit 3cf6a3a3d4acf8347ccd0250274f517e6b2e9fe6)
Related: RHEL-100353
---
src/basic/log.h | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/src/basic/log.h b/src/basic/log.h
index c51941c141..153c3571b6 100644
--- a/src/basic/log.h
+++ b/src/basic/log.h
@@ -146,7 +146,7 @@ int log_struct_internal(
const char *file,
int line,
const char *func,
- const char *format, ...) _printf_(6,0) _sentinel_;
+ const char *format, ...) _sentinel_;
int log_oom_internal(
int level,
@@ -305,11 +305,15 @@ bool log_on_console(void) _pure_;
/* Do a fake formatting of the message string to let the scanner verify the arguments against the format
* message. The variable will never be set to true, but we don't tell the compiler that :) */
extern bool _log_message_dummy;
-# define LOG_MESSAGE(fmt, ...) "MESSAGE=%.0d" fmt, (_log_message_dummy && printf(fmt, ##__VA_ARGS__)), ##__VA_ARGS__
+# define LOG_ITEM(fmt, ...) "%.0d" fmt, (_log_message_dummy && printf(fmt, ##__VA_ARGS__)), ##__VA_ARGS__
+# define LOG_MESSAGE(fmt, ...) LOG_ITEM("MESSAGE=" fmt, ##__VA_ARGS__)
#else
+# define LOG_ITEM(fmt, ...) fmt, ##__VA_ARGS__
# define LOG_MESSAGE(fmt, ...) "MESSAGE=" fmt, ##__VA_ARGS__
#endif
+#define LOG_MESSAGE_ID(id) LOG_ITEM("MESSAGE_ID=" id)
+
void log_received_signal(int level, const struct signalfd_siginfo *si);
/* If turned on, any requests for a log target involving "syslog" will be implicitly upgraded to the equivalent journal target */