ustream: suppress write attempts in ustream_printf and ustream_vprintf if a write...

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

diff --git a/ustream.c b/ustream.c
index 8e6efcda43be5eca12d2dc8b4c131928be9d9123..9c14678b059ad656ddc5b318cac23953615ba968 100644 (file)
--- a/ustream.c
+++ b/ustream.c
@@ -435,6 +435,9 @@ int ustream_vprintf(struct ustream *s, const char *format, va_list arg)
        va_list arg2;
        int wr, maxlen, buflen;
 
+       if (s->write_error)
+               return 0;
+
        if (!l->data_bytes) {
                buf = alloca(MAX_STACK_BUFLEN);
                va_copy(arg2, arg);
@@ -493,6 +496,9 @@ int ustream_printf(struct ustream *s, const char *format, ...)
        va_list arg;
        int ret;
 
+       if (s->write_error)
+               return 0;
+
        va_start(arg, format);
        ret = ustream_vprintf(s, format, arg);
        va_end(arg);