Command line help explicitly requested by the user should be printed to stdout, not stderr. We do elsewhere. Adjust -drive to match: use qemu_printf() instead of error_printf(). Plain printf() would be wrong because we need to print to the current monitor for "drive_add ... format=help".
Cc: Kevin Wolf <kw...@redhat.com> Cc: Max Reitz <mre...@redhat.com> Cc: qemu-bl...@nongnu.org Signed-off-by: Markus Armbruster <arm...@redhat.com> --- blockdev.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/blockdev.c b/blockdev.c index 4775a07d93..79fbac8450 100644 --- a/blockdev.c +++ b/blockdev.c @@ -40,6 +40,7 @@ #include "monitor/monitor.h" #include "qemu/error-report.h" #include "qemu/option.h" +#include "qemu/qemu-print.h" #include "qemu/config-file.h" #include "qapi/qapi-commands-block.h" #include "qapi/qapi-commands-transaction.h" @@ -301,7 +302,7 @@ DriveInfo *drive_get_next(BlockInterfaceType type) static void bdrv_format_print(void *opaque, const char *name) { - error_printf(" %s", name); + qemu_printf(" %s", name); } typedef struct { @@ -530,11 +531,11 @@ static BlockBackend *blockdev_init(const char *file, QDict *bs_opts, if ((buf = qemu_opt_get(opts, "format")) != NULL) { if (is_help_option(buf)) { - error_printf("Supported formats:"); + qemu_printf("Supported formats:"); bdrv_iterate_format(bdrv_format_print, NULL, false); - error_printf("\nSupported formats (read-only):"); + qemu_printf("\nSupported formats (read-only):"); bdrv_iterate_format(bdrv_format_print, NULL, true); - error_printf("\n"); + qemu_printf("\n"); goto early_err; } -- 2.17.2