new file mode 100644
--- /dev/null
+++ b/src/os/unix/ngx_linux_init.c
@@ -0,0 +1,53 @@
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+
+
+/* STUB */
+ssize_t ngx_unix_recv(ngx_connection_t *c, char *buf, size_t size);
+ngx_chain_t *ngx_writev_chain(ngx_connection_t *c, ngx_chain_t *in);
+int ngx_posix_init(ngx_log_t *log);
+
+
+char ngx_linux_kern_ostype[50];
+char ngx_linux_kern_osrelease[20];
+
+
+ngx_os_io_t ngx_os_io = {
+    ngx_unix_recv,
+    NULL,
+    NULL,
+    ngx_writev_chain,
+    NGX_HAVE_ZEROCOPY
+};
+
+
+int ngx_os_init(ngx_log_t *log)
+{
+    int  name[2], len;
+
+    name[0] = CTL_KERN;
+    name[1] = KERN_OSTYPE;
+    len = sizeof(ngx_linux_kern_ostype);
+    if (sysctl(name, sizeof(name), ngx_linux_kern_ostype, &len, NULL, 0)
+                                                                       == -1) {
+        ngx_log_error(NGX_LOG_ALERT, log, errno, "sysctl(KERN_OSTYPE) failed");
+        return NGX_ERROR;
+    }
+
+    name[0] = CTL_KERN;
+    name[1] = KERN_OSRELEASE;
+    len = sizeof(ngx_linux_kern_osrelease);
+    if (sysctl(name, sizeof(name), ngx_linux_kern_osrelease, &len, NULL, 0)
+                                                                       == -1) {
+        ngx_log_error(NGX_LOG_ALERT, log, errno,
+                      "sysctl(KERN_OSRELEASE) failed");
+        return NGX_ERROR;
+    }
+
+    ngx_log_error(NGX_LOG_INFO, log, 0, "OS: %s %s",
+                  ngx_linux_kern_ostype, ngx_linux_kern_osrelease);
+
+
+    return ngx_posix_init(log);
+}