From f16d15c9276bd8f501f861c39cbd4adc812d0c1d Mon Sep 17 00:00:00 2001 From: Yusuke Okada Date: Thu, 18 Aug 2022 14:46:19 -0400 Subject: [PATCH] virtiofsd: use g_date_time_get_microsecond to get subsecond The "%f" specifier in g_date_time_format() is only available in glib 2.65.2 or later. If combined with older glib, the function returns null and the timestamp displayed as "(null)". For backward compatibility, g_date_time_get_microsecond should be used to retrieve subsecond. In this patch the g_date_time_format() leaves subsecond field as "%06d" and let next snprintf to format with g_date_time_get_microsecond. Signed-off-by: Yusuke Okada Reviewed-by: Dr. David Alan Gilbert Message-id: 20220818184618.2205172-1-yokada.996@gmail.com Signed-off-by: Stefan Hajnoczi --- tools/virtiofsd/passthrough_ll.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/tools/virtiofsd/passthrough_ll.c b/tools/virtiofsd/passthrough_ll.c index 371a7bead6..20f0f41f99 100644 --- a/tools/virtiofsd/passthrough_ll.c +++ b/tools/virtiofsd/passthrough_ll.c @@ -4185,6 +4185,7 @@ static void setup_nofile_rlimit(unsigned long rlimit_nofile) static void log_func(enum fuse_log_level level, const char *fmt, va_list ap) { g_autofree char *localfmt = NULL; + char buf[64]; if (current_log_level < level) { return; @@ -4197,9 +4198,11 @@ static void log_func(enum fuse_log_level level, const char *fmt, va_list ap) fmt); } else { g_autoptr(GDateTime) now = g_date_time_new_now_utc(); - g_autofree char *nowstr = g_date_time_format(now, "%Y-%m-%d %H:%M:%S.%f%z"); + g_autofree char *nowstr = g_date_time_format(now, + "%Y-%m-%d %H:%M:%S.%%06d%z"); + snprintf(buf, 64, nowstr, g_date_time_get_microsecond(now)); localfmt = g_strdup_printf("[%s] [ID: %08ld] %s", - nowstr, syscall(__NR_gettid), fmt); + buf, syscall(__NR_gettid), fmt); } fmt = localfmt; }