SHA256
1
0
forked from pool/cpio
cpio/cpio-eof_tape_handling.patch

78 lines
1.9 KiB
Diff

--- src/util.c
+++ src/util.c
@@ -188,8 +188,15 @@ tape_fill_input_buffer (int in_des, int
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 @@ tape_buffered_peek (char *peek_buf, int
{
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 @@ tape_offline (int tape_des)
#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