diff options
Diffstat (limited to 'utils/swi-update.c')
| -rw-r--r-- | utils/swi-update.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/utils/swi-update.c b/utils/swi-update.c index 5183524..fb1683e 100644 --- a/utils/swi-update.c +++ b/utils/swi-update.c @@ -701,8 +701,10 @@ static int write_hdlc(int fd, const char *in, size_t inlen) wlen = hdlc_frame(in, inlen, wbuf, sizeof(wbuf)); if (wlen > 0) { - write(fd, wbuf, wlen); - print_packet("write", wbuf, wlen); + if (write(fd, wbuf, wlen) < 0) + fprintf(stderr, "error writing HDLC"); + else + print_packet("write", wbuf, wlen); } else { debug("hdlc_frame() returned %d\n", wlen); } @@ -843,7 +845,10 @@ static int download_image(int serfd, char *buf, const char *image) FD_SET(serfd, &wr); if (select(serfd + 1, NULL, &wr, NULL, &tv) <= 0) goto out; - write(serfd, buf, rlen); + if (write(serfd, buf, rlen) < 0) { + fprintf(stderr, "error writing data"); + goto out; + } ret = read_and_parse(serfd, false); if (ret < 0) goto out; |