utils: add little-endian swap helpers

[project/libubox.git] / ustream.c

diff --git a/ustream.c b/ustream.c
index a58069d..719af99 100644 (file)
--- a/ustream.c
+++ b/ustream.c
@@ -24,7 +24,7 @@
 
 #include "ustream.h"
 
-void ustream_init_buf(struct ustream_buf *buf, int len)
+static void ustream_init_buf(struct ustream_buf *buf, int len)
 {
        if (!len)
                abort();
@@ -37,6 +37,7 @@ void ustream_init_buf(struct ustream_buf *buf, int len)
 
 static void ustream_add_buf(struct ustream_buf_list *l, struct ustream_buf *buf)
 {
+       l->buffers++;
        if (!l->tail)
                l->head = buf;
        else
@@ -104,7 +105,8 @@ static void ustream_state_change_cb(struct uloop_timeout *t)
 
        if (s->write_error)
                ustream_free_buffers(&s->w);
-       s->notify_state(s);
+       if (s->notify_state)
+               s->notify_state(s);
 }
 
 void ustream_init_defaults(struct ustream *s)
@@ -340,7 +342,7 @@ bool ustream_write_pending(struct ustream *s)
        if (s->write_error)
                return false;
 
-       while (buf) {
+       while (buf && s->w.data_bytes) {
                struct ustream_buf *next = buf->next;
                int maxlen = buf->tail - buf->data;
 
@@ -403,7 +405,7 @@ static int ustream_write_buffered(struct ustream *s, const char *data, int len,
 int ustream_write(struct ustream *s, const char *data, int len, bool more)
 {
        struct ustream_buf_list *l = &s->w;
-       int wr;
+       int wr = 0;
 
        if (s->write_error)
                return 0;
@@ -434,6 +436,9 @@ 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);
@@ -492,6 +497,9 @@ 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);