--- a/src/os/unix/ngx_solaris_sendfilev_chain.c
+++ b/src/os/unix/ngx_solaris_sendfilev_chain.c
@@ -43,42 +43,42 @@ ngx_chain_t *ngx_solaris_sendfilev_chain
         /* create the sendfilevec and coalesce the neighbouring bufs */
 
         for (cl = in; cl && vec.nelts < IOV_MAX; cl = cl->next) {
-            if (ngx_hunk_special(cl->hunk)) {
+            if (ngx_buf_special(cl->buf)) {
                 continue;
             }
 
-            if (ngx_hunk_in_memory_only(cl->hunk)) {
+            if (ngx_buf_in_memory_only(cl->buf)) {
                 fd = SFV_FD_SELF;
 
-                if (prev == cl->hunk->pos) {
-                    sfv->sfv_len += cl->hunk->last - cl->hunk->pos;
+                if (prev == cl->buf->pos) {
+                    sfv->sfv_len += cl->buf->last - cl->buf->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 = (off_t) (uintptr_t) cl->hunk->pos;
-                    sfv->sfv_len = cl->hunk->last - cl->hunk->pos;
+                    sfv->sfv_off = (off_t) (uintptr_t) cl->buf->pos;
+                    sfv->sfv_len = cl->buf->last - cl->buf->pos;
                 }
 
-                prev = cl->hunk->last;
+                prev = cl->buf->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;
+                if (fd == cl->buf->file->fd && fprev == cl->buf->file_pos) {
+                    sfv->sfv_len += cl->buf->file_last - cl->buf->file_pos;
 
                 } else {
                     ngx_test_null(sfv, ngx_push_array(&vec), NGX_CHAIN_ERROR);
-                    fd = cl->hunk->file->fd;
+                    fd = cl->buf->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;
+                    sfv->sfv_off = cl->buf->file_pos;
+                    sfv->sfv_len = cl->buf->file_last - cl->buf->file_pos;
                 }
 
-                fprev = cl->hunk->file_last;
+                fprev = cl->buf->file_last;
             }
         }
 
@@ -117,7 +117,7 @@ ngx_chain_t *ngx_solaris_sendfilev_chain
 
         for (cl = in; cl; cl = cl->next) {
 
-            if (ngx_hunk_special(cl->hunk)) {
+            if (ngx_buf_special(cl->buf)) {
                 continue; 
             }
 
@@ -125,28 +125,28 @@ ngx_chain_t *ngx_solaris_sendfilev_chain
                 break;
             }
 
-            size = ngx_hunk_size(cl->hunk);
+            size = ngx_buf_size(cl->buf);
 
             if (sent >= size) {
                 sent -= size;
 
-                if (cl->hunk->type & NGX_HUNK_IN_MEMORY) {
-                    cl->hunk->pos = cl->hunk->last;
+                if (ngx_buf_in_memory(cl->buf)) {
+                    cl->buf->pos = cl->buf->last;
                 }
 
-                if (cl->hunk->type & NGX_HUNK_FILE) {
-                    cl->hunk->file_pos = cl->hunk->file_last;
+                if (cl->buf->in_file) {
+                    cl->buf->file_pos = cl->buf->file_last;
                 }
 
                 continue;
             }
 
-            if (cl->hunk->type & NGX_HUNK_IN_MEMORY) {
-                cl->hunk->pos += sent;
+            if (ngx_buf_in_memory(cl->buf)) {
+                cl->buf->pos += sent;
             }
 
-            if (cl->hunk->type & NGX_HUNK_FILE) {
-                cl->hunk->file_pos += sent;
+            if (cl->buf->in_file) {
+                cl->buf->file_pos += sent;
             }
 
             break;