From b6fffc1af096e4c55fb45707f3597f4df06805fe Mon Sep 17 00:00:00 2001
From: Dmitry Volyntsev <xeioex@nginx.com>
Date: Fri, 17 Apr 2020 17:04:18 +0000
Subject: [PATCH] Improved reading of pseudofiles.

---
 src/njs_fs.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/njs_fs.c b/src/njs_fs.c
index 1f231263..2d63452b 100644
--- a/src/njs_fs.c
+++ b/src/njs_fs.c
@@ -233,6 +233,12 @@ njs_fs_read_file(njs_vm_t *vm, njs_value_t *args, njs_uint_t nargs,
             goto done;
         }
 
+        if (njs_slow_path(data.length < size)) {
+            /* Pseudo-files may return less data than declared by st_size. */
+            njs_string_truncate(&retval, data.length);
+        }
+
+        size = data.length;
         start = data.start;
 
     } else {
-- 
2.47.3