new file mode 100644
--- /dev/null
+++ b/src/os/unix/ngx_solaris_sendfilev_chain.c
@@ -0,0 +1,147 @@
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+#include <ngx_event.h>
+
+
+ngx_chain_t *ngx_solaris_sendfilev_chain(ngx_connection_t *c, ngx_chain_t *in)
+{
+    int             fd;
+    char           *prev;
+    off_t           fprev;
+    size_t          sent;
+    ssize_t         n;
+    ngx_int_t       eintr;
+    sendfilevec_t  *sfv;
+    ngx_array_t     vec;
+    ngx_event_t    *wev;
+    ngx_chain_t    *cl;
+
+    wev = c->write;
+
+    if (!wev->ready) {
+        return in;
+    }
+
+    do {
+        fd = SFV_FD_SELF;
+        prev = NULL;
+        sfv = NULL;
+        eintr = 0;
+        sent = 0;
+
+        /* create the sendfilevec and coalesce the neighbouring hunks */
+
+        for (cl = in; cl; cl = cl->next) {
+            if (ngx_hunk_special(cl->hunk)) {
+                continue;
+            }
+
+            if (ngx_hunk_in_memory_only(cl->hunk)) {
+                fd = SFV_FD_SELF;
+
+                if (prev == cl->hunk->pos) {
+                    sfv->sfv_len += cl->hunk->last - cl->hunk->pos;
+
+                } else {
+                    ngx_test_null(sfv, ngx_push_array(&vec), NGX_CHAIN_ERROR);
+                    sfv->sfv_fd = SFV_FD_SELF;
+                    sfv->sfv_flag = 0;
+                    sfv->sfv_off = cl->hunk->pos;
+                    sfv->sfv_len = cl->hunk->last - cl->hunk->pos;
+                }
+
+                prev = cl->hunk->last;
+
+            } else {
+                prev = NULL;
+
+                if (fd == cl->hunk->file->fd && fprev == cl->hunk->file_pos) {
+                    sfv->sfv_len += cl->hunk->file_last - cl->hunk->file_pos;
+
+                } else {
+                    ngx_test_null(sfv, ngx_push_array(&vec), NGX_CHAIN_ERROR);
+                    fd = cl->hunk->file->fd;
+                    sfv->sfv_fd = fd;
+                    sfv->sfv_flag = 0;
+                    sfv->sfv_off = cl->hunk->file_pos;
+                    sfv->sfv_len = cl->hunk->file_last - cl->hunk->file_pos;
+                }
+
+                fprev = cl->hunk->file_last;
+            }
+        }
+
+        n = sendfile(c->fd, vec->elts, vec->nelts, &sent);
+
+        if (n == -1) {
+            err = ngx_errno;
+
+            if (err == NGX_EINTR) {
+                eintr = 1;
+            }
+
+            if (err == NGX_EAGAIN || err == NGX_EINTR) {
+                ngx_log_error(NGX_LOG_INFO, c->log, err,
+                              "sendfilev() sent only " SIZE_T_FMT " bytes",
+                              sent);
+            } else {
+                wev->error = 1;
+                ngx_log_error(NGX_LOG_CRIT, c->log, err, "sendfilev() failed");
+                return NGX_CHAIN_ERROR;
+            }
+        }
+
+#if (NGX_DEBUG_WRITE_CHAIN)
+        ngx_log_debug(c->log, "sendfilev: %d " SIZE_T_FMT ", n _ sent);
+#endif
+
+        c->sent += sent;
+
+        for (cl = in; cl; cl = cl->next) {
+
+            if (ngx_hunk_special(cl->hunk)) {
+                continue; 
+            }
+
+            if (sent == 0) {
+                break;
+            }
+
+            size = ngx_hunk_size(cl->hunk);
+
+            if (sent >= size) {
+                sent -= size;
+
+                if (cl->hunk->type & NGX_HUNK_IN_MEMORY) {
+                    cl->hunk->pos = cl->hunk->last;
+                }
+
+                if (cl->hunk->type & NGX_HUNK_FILE) {
+                    cl->hunk->file_pos = cl->hunk->file_last;
+                }
+
+                continue;
+            }
+
+            if (cl->hunk->type & NGX_HUNK_IN_MEMORY) {
+                cl->hunk->pos += sent;
+            }
+
+            if (cl->hunk->type & NGX_HUNK_FILE) {
+                cl->hunk->file_pos += sent;
+            }
+
+            break;
+        }
+
+        in = cl;
+
+    } while (eintr);
+
+    if (in) {
+        wev->ready = 0;
+    }
+
+    return in;
+}