fix zstd -l processing with closed stdin

zstd-l-stdin.patch

@@ -0,0 +1,70 @@
+From 712a9fd9721c314f4b0238577d803b012845f6d2 Mon Sep 17 00:00:00 2001
+From: "W. Felix Handte" <w@felixhandte.com>
+Date: Fri, 29 Jun 2018 15:33:44 -0400
+Subject: [PATCH] Allow Invoking `zstd --list` When `stdin` is not a `tty`
+
+Also now returns an error when no inputs are given.
+
+New proposed behavior:
+
+```
+felix@odin:~/prog/zstd (list-stdin-check)$ ./zstd -l; echo $?
+No files given
+1
+felix@odin:~/prog/zstd (list-stdin-check)$ ./zstd -l Makefile.zst; echo $?
+Frames  Skips  Compressed  Uncompressed  Ratio  Check  Filename
+     1      0     3.08 KB      10.92 KB  3.544  XXH64  Makefile.zst
+0
+felix@odin:~/prog/zstd (list-stdin-check)$ ./zstd -l <Makefile.zst; echo $?
+zstd: --list does not support reading from standard input
+No files given
+1
+felix@odin:~/prog/zstd (list-stdin-check)$ ./zstd -l Makefile.zst <Makefile.zst; echo $?
+Frames  Skips  Compressed  Uncompressed  Ratio  Check  Filename
+     1      0     3.08 KB      10.92 KB  3.544  XXH64  Makefile.zst
+0
+felix@odin:~/prog/zstd (list-stdin-check)$
+```
+---
+ programs/fileio.c | 16 ++++++++++------
+ 1 file changed, 10 insertions(+), 6 deletions(-)
+
+diff --git a/programs/fileio.c b/programs/fileio.c
+index 0175b31..b4eed28 100644
+--- a/programs/fileio.c
++++ b/programs/fileio.c
+@@ -2017,21 +2017,25 @@ static int FIO_listFile(fileInfo_t* total, const char* inFileName, int displayLe
+ }
+ 
+ int FIO_listMultipleFiles(unsigned numFiles, const char** filenameTable, int displayLevel){
+-
+-    if (!IS_CONSOLE(stdin)) {
+-        DISPLAYOUT("zstd: --list does not support reading from standard input\n");
+-        return 1;
++    unsigned u;
++    for (u=0; u<numFiles;u++) {
++        if (!strcmp (filenameTable[u], stdinmark)) {
++            DISPLAYOUT("zstd: --list does not support reading from standard input\n");
++            return 1;
++        }
+     }
+ 
+     if (numFiles == 0) {
++        if (!IS_CONSOLE(stdin)) {
++            DISPLAYOUT("zstd: --list does not support reading from standard input\n");
++        }
+         DISPLAYOUT("No files given\n");
+-        return 0;
++        return 1;
+     }
+     if (displayLevel <= 2) {
+         DISPLAYOUT("Frames  Skips  Compressed  Uncompressed  Ratio  Check  Filename\n");
+     }
+     {   int error = 0;
+-        unsigned u;
+         fileInfo_t total;
+         memset(&total, 0, sizeof(total));
+         total.usesCheck = 1;
+-- 
+2.9.3
+

zstd.spec

@@ -21,6 +21,7 @@ URL:            https://github.com/facebook/zstd
 Source0:        https://github.com/facebook/zstd/archive/v%{version}.tar.gz#/%{name}-%{version}.tar.gz
 
 Patch1:         pzstd.1.patch
+Patch2:         zstd-l-stdin.patch
 
 BuildRequires:  gcc gtest-devel
 %if %{with pzstd}
@@ -51,6 +52,7 @@ find -name .gitignore -delete
 %if %{with pzstd}
 %patch1 -p1
 %endif
+%patch2 -p1
 
 %build
 export CFLAGS="$RPM_OPT_FLAGS"