merge r3138, r3139, r3157, r3158, r3159, r3164, r3165, r3202, r3203, r3383, r3388, r3417, r3418: Win32 (mostly) and some Unix file related fixes: *) preserve errno while ngx_free() *) win32 ngx_file_info() utf8 support *) delete Win95 code *) log file name for read/write errors *) test incomplete WriteFile() *) handle short pwrite() to log an error cause: ENOSPC, EDQUOT, or EFBIG *) uniform ngx_directio_on/off() interface with other file functions *) do not create Win32 drive letter in ngx_create_full_path() *) ignore EACCES errors for top level directories in ngx_create_full_path() *) fix Win32 error messages when an temporary file replaces an existent file: *) do not rename an already renamed file *) now ngx_win32_rename_file() returns error code *) do not log failure inside ngx_win32_rename_file() *) fix Win32 error message when an temporary file replaces an existent file: return at once if ngx_win32_rename_file() was not failed and do not try to delete already the renamed temporary file *) skip URI trailing spaces under Win32 *) disable Win32 short file names

--- a/src/core/ngx_output_chain.c
+++ b/src/core/ngx_output_chain.c
@@ -510,7 +510,7 @@ ngx_output_chain_copy_buf(ngx_output_cha
 #if (NGX_HAVE_ALIGNED_DIRECTIO)
 
         if (ctx->unaligned) {
-            if (ngx_directio_off(src->file->fd) == -1) {
+            if (ngx_directio_off(src->file->fd) == NGX_FILE_ERROR) {
                 ngx_log_error(NGX_LOG_ALERT, ctx->pool->log, ngx_errno,
                               ngx_directio_off_n " \"%s\" failed",
                               src->file->name.data);
@@ -528,7 +528,7 @@ ngx_output_chain_copy_buf(ngx_output_cha
 
             err = ngx_errno;
 
-            if (ngx_directio_on(src->file->fd) == -1) {
+            if (ngx_directio_on(src->file->fd) == NGX_FILE_ERROR) {
                 ngx_log_error(NGX_LOG_ALERT, ctx->pool->log, ngx_errno,
                               ngx_directio_on_n " \"%s\" failed",
                               src->file->name.data);