From 0a2ea859565e6e437590c25d9c88f738c5c2376f Mon Sep 17 00:00:00 2001
From: songweibin <song.weibin@zte.com.cn>
Date: Fri, 31 Aug 2018 15:41:52 +0800
Subject: [PATCH] rbd: fix error import when the input is a pipe

Fixes: http://tracker.ceph.com/issues/34536

Signed-off-by: songweibin <song.weibin@zte.com.cn>
(cherry picked from commit 3168d21629eb4d33f95dbd9399225e3e3817dc4f)
---
 src/tools/rbd/action/Import.cc | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/src/tools/rbd/action/Import.cc b/src/tools/rbd/action/Import.cc
index b7ab85d7825..8a024d336c9 100644
--- a/src/tools/rbd/action/Import.cc
+++ b/src/tools/rbd/action/Import.cc
@@ -639,7 +639,7 @@ static int decode_imagemeta(int fd, uint64_t length, std::map<std::string, std::
   return 0;
 }
 
-static int do_import_header(int fd, int import_format, uint64_t &size, librbd::ImageOptions& opts,
+static int do_import_header(int fd, int import_format, librbd::ImageOptions& opts,
                             std::map<std::string, std::string>* imagemetas)
 {
   // There is no header in v1 image.
@@ -647,10 +647,6 @@ static int do_import_header(int fd, int import_format, uint64_t &size, librbd::I
     return 0;
   }
 
-  if (fd == STDIN_FILENO || size < utils::RBD_IMAGE_BANNER_V2.size()) {
-    return -EINVAL;
-  }
-
   int r;
   r = validate_banner(fd, utils::RBD_IMAGE_BANNER_V2);
   if (r < 0) {
@@ -885,7 +881,7 @@ static int do_import(librados::Rados &rados, librbd::RBD &rbd,
 #endif
   }
 
-  r = do_import_header(fd, import_format, size, opts, &imagemetas);
+  r = do_import_header(fd, import_format, opts, &imagemetas);
   if (r < 0) {
     std::cerr << "rbd: import header failed." << std::endl;
     goto done;
-- 
2.47.3