diff -Naur tar-1.31-orig/lib/rmt.h tar-1.31/lib/rmt.h
--- tar-1.31-orig/lib/rmt.h	2015-12-06 00:53:30.000000000 +0300
+++ tar-1.31/lib/rmt.h	2019-01-15 11:43:57.167024200 +0300
@@ -62,7 +62,7 @@
 #define rmtcreat(dev_name, mode, command) \
    (_remdev (dev_name) \
     ? rmt_open__ (dev_name, O_CREAT | O_WRONLY, __REM_BIAS, command) \
-    : creat (dev_name, mode))
+    : open (dev_name, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, mode))
 
 #define rmtlstat(dev_name, muffer) \
   (_remdev (dev_name) ? (errno = EOPNOTSUPP), -1 : lstat (dev_name, buffer))
diff -Naur tar-1.31-orig/rmt/rmt.c tar-1.31/rmt/rmt.c
--- tar-1.31-orig/rmt/rmt.c	2018-07-31 11:55:58.000000000 +0300
+++ tar-1.31/rmt/rmt.c	2019-01-15 11:43:57.182624300 +0300
@@ -338,7 +338,7 @@
       if (device_fd >= 0)
 	close (device_fd);
 
-      device_fd = open (device, flag, MODE_RW);
+      device_fd = open (device, flag | O_BINARY, MODE_RW);
       if (device_fd < 0)
 	rmt_error (errno);
       else
diff -Naur tar-1.31-orig/src/buffer.c tar-1.31/src/buffer.c
--- tar-1.31-orig/src/buffer.c	2019-01-02 21:07:47.000000000 +0300
+++ tar-1.31/src/buffer.c	2019-01-15 11:43:57.182624300 +0300
@@ -766,6 +766,7 @@
             enum compress_type type;
 
             archive = STDIN_FILENO;
+            freopen (NULL, "rb", stdin);
             type = check_compressed_archive (&shortfile);
             if (type != ct_tar && type != ct_none)
               FATAL_ERROR ((0, 0,
@@ -778,12 +779,19 @@
 
         case ACCESS_WRITE:
           archive = STDOUT_FILENO;
+	  freopen (NULL,
+		   fcntl (STDOUT_FILENO, F_GETFL) & O_APPEND ? "ab" : "wb",
+		   stdout);
           if (!index_file_name)
             stdlis = stderr;
           break;
 
         case ACCESS_UPDATE:
           archive = STDIN_FILENO;
+	  freopen (NULL, "rb", stdin);
+	  freopen (NULL,
+		   fcntl (STDOUT_FILENO, F_GETFL) & O_APPEND ? "ab" : "wb",
+		   stdout);
           write_archive_to_stdout = true;
           record_end = record_start; /* set up for 1st record = # 0 */
           if (!index_file_name)
@@ -1182,7 +1190,7 @@
 void
 closeout_volume_number (void)
 {
-  FILE *file = fopen (volno_file_option, "w");
+  FILE *file = fopen (volno_file_option, "wb");
 
   if (file)
     {
diff -Naur tar-1.31-orig/src/incremen.c tar-1.31/src/incremen.c
--- tar-1.31-orig/src/incremen.c	2019-01-02 21:07:48.000000000 +0300
+++ tar-1.31/src/incremen.c	2019-01-15 11:43:57.198224300 +0300
@@ -1035,7 +1035,14 @@
       lineno++;
 
       if (buf[n - 1] == '\n')
-	buf[n - 1] = '\0';
+	{
+	  buf[n - 1] = '\0';
+	  /* Cygwin hack - older tars created incremental files with \r\n
+	     line endings, so strip the \r.  This breaks on managed mount
+	     on directories with a trailing \r, oh well.  */
+	  if (buf[n - 2] == '\r')
+	    buf[n - 2] = '\0';
+	}
 
       if (version == 1)
 	{
@@ -1330,7 +1337,7 @@
   int fd;
   char *buf = NULL;
   size_t bufsize = 0;
-  int flags = O_RDWR | O_CREAT;
+  int flags = O_RDWR | O_CREAT | O_BINARY;
 
   if (incremental_level == 0)
     flags |= O_TRUNC;
@@ -1344,7 +1351,7 @@
       return;
     }
 
-  listed_incremental_stream = fdopen (fd, "r+");
+  listed_incremental_stream = fdopen (fd, "rb+");
   if (! listed_incremental_stream)
     {
       open_error (listed_incremental_option);
diff -Naur tar-1.31-orig/src/system.c tar-1.31/src/system.c
--- tar-1.31-orig/src/system.c	2019-01-02 21:07:48.000000000 +0300
+++ tar-1.31/src/system.c	2019-01-15 11:43:57.213824300 +0300
@@ -366,7 +366,8 @@
 	 compressor.  */
       if (strcmp (archive_name_array[0], "-"))
 	{
-	  archive = creat (archive_name_array[0], MODE_RW);
+	  archive = open (archive_name_array[0],
+			  O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, MODE_RW);
 	  if (archive < 0)
 	    {
 	      int saved_errno = errno;
@@ -407,7 +408,11 @@
   xclose (child_pipe[PWRITE]);
 
   if (strcmp (archive_name_array[0], "-") == 0)
-    archive = STDOUT_FILENO;
+    {
+      archive = STDOUT_FILENO;
+      freopen (NULL, fcntl (STDOUT_FILENO, F_GETFL) & O_APPEND ? "ab" : "wb",
+	       stdout);
+    }
   else
     {
       archive = rmtcreat (archive_name_array[0], MODE_RW, rsh_command_option);