diff options
| author | Markus Armbruster <armbru@redhat.com> | 2019-04-17 21:06:36 +0200 |
|---|---|---|
| committer | Markus Armbruster <armbru@redhat.com> | 2019-04-18 22:18:59 +0200 |
| commit | 679cb8e1a1e5d10f44ac9e40fe1458cbfd720ebb (patch) | |
| tree | 388f5556a444d8037c3b48fe05ccc41cddbe2591 /include/monitor/monitor.h | |
| parent | 26eaf2cd0dd31d7bdb2a5ac53f32a051754b0c30 (diff) | |
monitor error: Make printf()-like functions return a value
printf() & friends return the number of characters written on success,
negative value on error.
monitor_printf(), monitor_vfprintf(), monitor_vprintf(),
error_printf(), error_printf_unless_qmp(), error_vprintf(), and
error_vprintf_unless_qmp() return void. Some of them carry a TODO
comment asking for int instead.
Improve them to return int like printf() does.
This makes our use of monitor_printf() as fprintf_function slightly
less dirty: the function cast no longer adds a return value that isn't
there. It still changes a parameter's pointer type. That will be
addressed in a future commit.
monitor_vfprintf() always returns zero. Improve it to return the
proper value.
Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <20190417190641.26814-11-armbru@redhat.com>
Diffstat (limited to 'include/monitor/monitor.h')
| -rw-r--r-- | include/monitor/monitor.h | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/include/monitor/monitor.h b/include/monitor/monitor.h index c1b40a9cac..e4c3717454 100644 --- a/include/monitor/monitor.h +++ b/include/monitor/monitor.h @@ -28,9 +28,9 @@ void monitor_resume(Monitor *mon); int monitor_get_fd(Monitor *mon, const char *fdname, Error **errp); int monitor_fd_param(Monitor *mon, const char *fdname, Error **errp); -void monitor_vprintf(Monitor *mon, const char *fmt, va_list ap) +int monitor_vprintf(Monitor *mon, const char *fmt, va_list ap) GCC_FMT_ATTR(2, 0); -void monitor_printf(Monitor *mon, const char *fmt, ...) GCC_FMT_ATTR(2, 3); +int monitor_printf(Monitor *mon, const char *fmt, ...) GCC_FMT_ATTR(2, 3); int monitor_fprintf(FILE *stream, const char *fmt, ...) GCC_FMT_ATTR(2, 3); void monitor_flush(Monitor *mon); int monitor_set_cpu(int cpu_index); @@ -48,7 +48,7 @@ int monitor_fdset_dup_fd_add(int64_t fdset_id, int dup_fd); void monitor_fdset_dup_fd_remove(int dup_fd); int monitor_fdset_dup_fd_find(int dup_fd); -void monitor_vfprintf(FILE *stream, - const char *fmt, va_list ap) GCC_FMT_ATTR(2, 0); +int monitor_vfprintf(FILE *stream, + const char *fmt, va_list ap) GCC_FMT_ATTR(2, 0); #endif /* MONITOR_H */ |