diff --git a/src/core/ngx_open_file_cache.c b/src/core/ngx_open_file_cache.c
index 5f6e0b2..034bf3b 100644
--- a/src/core/ngx_open_file_cache.c
+++ b/src/core/ngx_open_file_cache.c
@@ -487,7 +487,14 @@
     }
 
     if (!of->log) {
-        fd = ngx_open_file(name, NGX_FILE_RDONLY, NGX_FILE_OPEN, 0);
+
+        /*
+         * Use non-blocking open() not to hang on FIFO files, etc.
+         * This flag has no effect on a regular files.
+         */
+
+        fd = ngx_open_file(name, NGX_FILE_RDONLY|NGX_FILE_NONBLOCK,
+                           NGX_FILE_OPEN, 0);
 
     } else {
         fd = ngx_open_file(name, NGX_FILE_APPEND, NGX_FILE_CREATE_OR_OPEN,
diff --git a/src/http/modules/ngx_http_gzip_static_module.c b/src/http/modules/ngx_http_gzip_static_module.c
index 29874a3..6ba3cd8 100644
--- a/src/http/modules/ngx_http_gzip_static_module.c
+++ b/src/http/modules/ngx_http_gzip_static_module.c
@@ -179,7 +179,7 @@
 #if !(NGX_WIN32) /* the not regular files are probably Unix specific */
 
     if (!of.is_file) {
-        ngx_log_error(NGX_LOG_CRIT, log, ngx_errno,
+        ngx_log_error(NGX_LOG_CRIT, log, 0,
                       "\"%s\" is not a regular file", path.data);
 
         return NGX_HTTP_NOT_FOUND;
diff --git a/src/http/modules/ngx_http_static_module.c b/src/http/modules/ngx_http_static_module.c
index bc46b84..258ed21 100644
--- a/src/http/modules/ngx_http_static_module.c
+++ b/src/http/modules/ngx_http_static_module.c
@@ -188,7 +188,7 @@
 #if !(NGX_WIN32) /* the not regular files are probably Unix specific */
 
     if (!of.is_file) {
-        ngx_log_error(NGX_LOG_CRIT, log, ngx_errno,
+        ngx_log_error(NGX_LOG_CRIT, log, 0,
                       "\"%s\" is not a regular file", path.data);
 
         return NGX_HTTP_NOT_FOUND;
diff --git a/src/os/unix/ngx_files.h b/src/os/unix/ngx_files.h
index c9144f3..361c1bb 100644
--- a/src/os/unix/ngx_files.h
+++ b/src/os/unix/ngx_files.h
@@ -64,6 +64,7 @@
 #define NGX_FILE_OPEN            0
 #define NGX_FILE_TRUNCATE        O_CREAT|O_TRUNC
 #define NGX_FILE_APPEND          O_WRONLY|O_APPEND
+#define NGX_FILE_NONBLOCK        O_NONBLOCK
 
 #define NGX_FILE_DEFAULT_ACCESS  0644
 #define NGX_FILE_OWNER_ACCESS    0600
diff --git a/src/os/win32/ngx_files.h b/src/os/win32/ngx_files.h
index c11379f..7d01736 100644
--- a/src/os/win32/ngx_files.h
+++ b/src/os/win32/ngx_files.h
@@ -64,6 +64,7 @@
 #define NGX_FILE_WRONLY             GENERIC_WRITE
 #define NGX_FILE_RDWR               GENERIC_READ|GENERIC_WRITE
 #define NGX_FILE_APPEND             FILE_APPEND_DATA|SYNCHRONIZE
+#define NGX_FILE_NONBLOCK           0
 
 #define NGX_FILE_CREATE_OR_OPEN     OPEN_ALWAYS
 #define NGX_FILE_OPEN               OPEN_EXISTING