1 files changed, 46 insertions, 0 deletions
diff --git a/src/os/unix/ngx_readv_chain.c b/src/os/unix/ngx_readv_chain.c
new file mode 100644
index 000000000..8432f0c8d
--- /dev/null
+++ b/src/os/unix/ngx_readv_chain.c
@@ -0,0 +1,46 @@
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+
+
+ssize_t ngx_readv_chain(ngx_connection_t *c, ngx_chain_t *entry)
+{
+    ssize_t        n;
+    struct iovec  *iov;
+    ngx_err_t      err;
+    ngx_array_t    io;
+
+#if (NGX_SUPPRESS_WARN)
+    iov = NULL;
+#endif
+
+    ngx_init_array(io, c->pool, 10, sizeof(struct iovec), NGX_ERROR);
+
+    while (entry) {
+        ngx_test_null(iov, ngx_push_array(&io), NGX_ERROR);
+        iov->iov_base = entry->hunk->pos;
+        iov->iov_len = entry->hunk->end - entry->hunk->last;
+        entry = entry->next;
+    }
+
+ngx_log_debug(c->log, "recv: %d:%d" _ io.nelts _ iov->iov_len);
+
+    n = readv(c->fd, (struct iovec *) io.elts, io.nelts);
+
+    ngx_destroy_array(&io);
+
+    if (n == -1) {
+        c->read->ready = 0;
+
+        err = ngx_errno;
+        if (err == NGX_EAGAIN) {
+            ngx_log_error(NGX_LOG_INFO, c->log, err, "readv() returned EAGAIN");
+            return NGX_AGAIN;
+        }
+
+        ngx_log_error(NGX_LOG_ERR, c->log, err, "readv() failed");
+        return NGX_ERROR;
+    }
+
+    return n;
+}