new file mode 100644
--- /dev/null
+++ b/src/os/unix/ngx_linux_init.c
@@ -0,0 +1,80 @@
+
+/*
+ * Copyright (C) Igor Sysoev
+ */
+
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+
+
+char ngx_linux_kern_ostype[50];
+char ngx_linux_kern_osrelease[20];
+
+int ngx_linux_rtsig_max;
+
+
+ngx_os_io_t ngx_os_io = {
+    ngx_unix_recv,
+    ngx_readv_chain,
+    ngx_unix_send,
+#if (HAVE_SENDFILE)
+    ngx_linux_sendfile_chain,
+    NGX_IO_SENDFILE
+#else
+    ngx_writev_chain,
+    0
+#endif
+};
+
+
+ngx_int_t 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, ngx_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, ngx_errno,
+                      "sysctl(KERN_OSRELEASE) failed");
+        return NGX_ERROR;
+    }
+
+
+    name[0] = CTL_KERN;
+    name[1] = KERN_RTSIGMAX;
+    len = sizeof(ngx_linux_rtsig_max);
+    if (sysctl(name, sizeof(name), &ngx_linux_rtsig_max, &len, NULL, 0) == -1) {
+        ngx_log_error(NGX_LOG_INFO, log, ngx_errno,
+                      "sysctl(KERN_RTSIGMAX) failed");
+        ngx_linux_rtsig_max = 0;
+
+    }
+
+
+    return ngx_posix_init(log);
+}
+
+
+void ngx_os_status(ngx_log_t *log)
+{
+    ngx_log_error(NGX_LOG_INFO, log, 0, "OS: %s %s",
+                  ngx_linux_kern_ostype, ngx_linux_kern_osrelease);
+
+    ngx_log_error(NGX_LOG_INFO, log, 0, "sysctl(KERN_RTSIGMAX): %d",
+                  ngx_linux_rtsig_max);
+
+    ngx_posix_status(log);
+}