nandwrite: complain on malformed -s NUM

[platform/upstream/busybox.git] / miscutils / nandwrite.c

diff --git a/miscutils/nandwrite.c b/miscutils/nandwrite.c
index d0e4397..8df0fdc 100644 (file)
--- a/miscutils/nandwrite.c
+++ b/miscutils/nandwrite.c
@@ -72,6 +72,8 @@ int nandwrite_main(int argc UNUSED_PARAM, char **argv)
        xioctl(fd, MEMGETINFO, &meminfo);
 
        mtdoffset = bb_strtou(opt_s, NULL, 0);
+       if (errno)
+               bb_error_msg_and_die("invalid number '%s'", opt_s);
 
        /* Pull it into a CPU register (hopefully) - smaller code that way */
        meminfo_writesize = meminfo.writesize;