From 253c4e787a799a3e1f92957ed791b5222f8d2f64 Mon Sep 17 00:00:00 2001 From: James Byrne Date: Fri, 12 Apr 2019 17:01:51 +0000 Subject: Optionally re-introduce bb_info_msg() Between Busybox 1.24.2 and 1.25.0 the bb_info_msg() function was eliminated and calls to it changed to be bb_error_msg(). The downside of this is that daemons now log all messages to syslog at the LOG_ERR level which makes it hard to filter errors from informational messages. This change optionally re-introduces bb_info_msg(), controlled by a new option FEATURE_SYSLOG_INFO, restores all the calls to bb_info_msg() that were removed (only in applets that set logmode to LOGMODE_SYSLOG or LOGMODE_BOTH), and also changes informational messages in ifplugd and ntpd. The code size change of this is as follows (using 'defconfig' on x86_64 with gcc 7.3.0-27ubuntu1~18.04) function old new delta bb_info_msg - 182 +182 bb_vinfo_msg - 27 +27 static.log7 194 198 +4 log8 190 191 +1 log5 190 191 +1 crondlog 45 - -45 ------------------------------------------------------------------------------ (add/remove: 2/1 grow/shrink: 3/0 up/down: 215/-45) Total: 170 bytes If you don't care about everything being logged at LOG_ERR level then when FEATURE_SYSLOG_INFO is disabled Busybox actually gets smaller: function old new delta static.log7 194 200 +6 log8 190 193 +3 log5 190 193 +3 syslog_level 1 - -1 bb_verror_msg 583 581 -2 crondlog 45 - -45 ------------------------------------------------------------------------------ (add/remove: 0/2 grow/shrink: 3/1 up/down: 12/-48) Total: -36 bytes Signed-off-by: James Byrne Signed-off-by: Denys Vlasenko --- include/libbb.h | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/libbb.h b/include/libbb.h index a20d5e403..57cfce385 100644 --- a/include/libbb.h +++ b/include/libbb.h @@ -1316,7 +1316,6 @@ enum { LOGMODE_BOTH = LOGMODE_SYSLOG + LOGMODE_STDIO, }; extern const char *msg_eol; -extern smallint syslog_level; extern smallint logmode; extern uint8_t xfunc_error_retval; extern void (*die_func)(void); @@ -1336,6 +1335,14 @@ void bb_verror_msg(const char *s, va_list p, const char *strerr) FAST_FUNC; void bb_die_memory_exhausted(void) NORETURN FAST_FUNC; void bb_logenv_override(void) FAST_FUNC; +#if ENABLE_FEATURE_SYSLOG_INFO +void bb_info_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))) FAST_FUNC; +void bb_vinfo_msg(const char *s, va_list p) FAST_FUNC; +#else +#define bb_info_msg bb_error_msg +#define bb_vinfo_msg(s,p) bb_verror_msg(s,p,NULL) +#endif + /* We need to export XXX_main from libbusybox * only if we build "individual" binaries */ -- cgit v1.2.3