File cpio-2.6-eof-handling.patch of Package cpio-2.6

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File cpio-2.6-eof-handling.patch of Package cpio-2.6

--- doc/cpio.1
+++ doc/cpio.1
@@ -54,6 +54,19 @@
 hpbin@4GB@same as bin, but different device major/minor encoding
 hpodc@8GB@same as odc, but different device major/minor encoding
 .TE
+.PP
+.SH WRITING AND READING ARCHIVES ON MULTIPLE TAPES
+.PP
+When the end of the medium has been reached, cpio will ask the user
+for to mount a new "tape" to continue the processing. 
+If the user specified the device name on the command line 
+(with the -I, -O, -F or --file options), then cpio can automatically 
+re-open the same device to use the next medium.  If the user did not
+specify the device name, then cpio will ask them which device to use.
+.PP
+Before re-opening the tape, cpio will prompt the user to switch
+tapes. This message can be changed with the option -M MESSAGE or
+ --message=MESSAGE.
 .LP
 .SH DESCRIPTION
 GNU cpio is fully documented in the texinfo documentation. To access the
--- doc/cpio.info
+++ doc/cpio.info
@@ -479,6 +479,14 @@
 Sticking a floppy disk to a filing cabinet using a magnet is probably
 not a good idea.
 
+   Writing and reading archives on multiple tapes needs user's attention.
+When the end of the medium has been reached, cpio will ask the user
+for to mount a new "tape" to continue the processing.
+If the user specified the device name on the command line
+(with the -I, -O, -F or --file options), then cpio can automatically
+re-open the same device to use the next medium.  If the user did not
+specify the device name, then cpio will ask them which device to use.
+
 
 File: cpio.info,  Node: Concept Index,  Prev: Media,  Up: Top
 
--- src/util.c
+++ src/util.c
@@ -188,8 +188,15 @@
   input_size = rmtread (in_des, input_buffer, num_bytes);
   if (input_size == 0 && input_is_special)
     {
-      get_next_reel (in_des);
+      if (!tape_eof (in_des))
+	get_next_reel (in_des);
       input_size = rmtread (in_des, input_buffer, num_bytes);
+      if (input_size == 0)
+	{
+	  if (tape_eod (in_des))
+	    get_next_reel (in_des);
+	  input_size = rmtread (in_des, input_buffer, num_bytes);
+	}
     }
   if (input_size < 0)
     error (1, errno, _("read error"));
@@ -354,8 +361,15 @@
 	{
 	  if (input_is_special)
 	    {
-	      get_next_reel (in_des);
+	      if (!tape_eof (in_des))
+		get_next_reel (in_des);
 	      tmp_input_size = rmtread (in_des, append_buf, io_block_size);
+	      if (tmp_input_size == 0)
+		{
+		  if (tape_eod (in_des))
+		    get_next_reel (in_des);
+		  tmp_input_size = rmtread (in_des, append_buf, io_block_size);
+		}
 	    }
 	  else
 	    break;
@@ -828,6 +842,40 @@
 #endif
 }
 
+int
+tape_eof( int tape_des)
+{
+  struct mtget status;
+
+  if (rmtioctl (tape_des, MTIOCGET, (char*)&status) == -1) {
+    error (1, errno, "Cannot get tape status");
+    return 0;
+  }
+
+  if (GMT_EOF(status.mt_gstat)) {
+      return 1;
+  }
+
+  return 0;
+}
+
+int
+tape_eod( int tape_des)
+{
+  struct mtget status;
+
+  if (rmtioctl (tape_des, MTIOCGET, (char*)&status) == -1) {
+    error (1, errno, "Cannot get tape status");
+    return 1;
+  }
+
+  if (GMT_EOD(status.mt_gstat)) {
+      return 1;
+  }
+
+  return 0;
+}
+
 /* The file on file descriptor TAPE_DES is assumed to be magnetic tape
    (or floppy disk or other device) and the end of the medium
    has been reached.  Ask the user for to mount a new "tape" to continue

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File cpio-2.6-eof-handling.patch of Package cpio-2.6

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