Currently it is possible to call "kwboot -b -t /dev/ttyUSB0" but not to
call "kwboot -b /dev/ttyUSB0".
Fix it by not trying to process the last argv[], which is non-getopt()
option (tty path) as the image path for -b.
Fixes: c513fe47dca2 ("tools: kwboot: Allow to use option -b without image path")
Reported-by: Marcel Ziswiler <mar...@ziswiler.com>
Signed-off-by: Pali Rohár <p...@kernel.org>
Reviewed-by: Marcel Ziswiler <mar...@ziswiler.com>
Tested-by: Marcel Ziswiler <mar...@ziswiler.com>
---
tools/kwboot.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/kwboot.c b/tools/kwboot.c
index 7737188f0d0a..68c0ef1f1b07 100644
--- a/tools/kwboot.c
+++ b/tools/kwboot.c
@@ -1770,7 +1770,7 @@ main(int argc, char **argv)
bootmsg = kwboot_msg_boot;
if (prev_optind == optind)
goto usage;
- if (argv[optind] && argv[optind][0] != '-')
+ if (optind < argc - 1 && argv[optind] &&
argv[optind][0] != '-')
imgpath = argv[optind++];
break;
--
2.20.1
