[Gambas-user] Pipe EOF

[Admin]

So, I have this piece of code:

---------------------------------

Dim PackSize As Integer

Dim packet As String
Dim archive As File
Dim outgoing As File
Dim NeededTransactions As Integer
Dim transaction As Integer
Dim OnePercent As Integer

archive = Pipe "~/base.tar.gz" For Read
outgoing = Pipe "/tmp/install" For Write

PackSize = Stat("~/base.tar.gz").Size
NeededTransactions = Int(Val(Label1.Text) / 8192)
OnePercent = Int(Val(Label1.Text) / 100)

Shell ("tar --same-owner -xzpf /tmp/install -C /")

For transaction = 0 To NeededTransactions

   Read #archive, packet, -8192
   Write #outgoing, packet
   Label1.Text -= Len(packet)
   ProgressBar1.Value = (PackSize - Val(Label1.Text)) / OnePercent / 100
   Wait

Next

Wait 10

Close #archive
Close #outgoing

Wait 10

Shell "ps ax | grep tar"

----------------------------------------

base.tar.gz is basically a Linux installation in a tarball with a packed 
path starting with /mnt, so when it is untared, it copies a full Linux 
system to /mnt assuming there's a new drive mounted. I can untar it 
manually in a terminal, then install Grub, and the system boots 
successfully.

When this code is executed, my progress bar fills to 100%, my "bytes 
left" Label1 eventually becomes zero, and #archive and #outgoing get 
closed succesfully. All 123849 files appear in /mnt as intended.

But when that last ps ax is executed - tar is still there. And the 
system boots to kernel panic stating that /sbin/init cant be ran because 
of Permission Denied, which tells me that tar clearly didn't go well.

If, after I get to 100% and zero bytes left, I simply do this in terminal:
cat /dev/zero > /tmp/install

tar immidiately prints into gambas IDE's terminal that it has 
successfully finished unpacking, the command (cat /dev/zero) terminates 
almost immidiatly after start, and the system boots fine.


So, I wonder if closing a pipe does not actually send EOF to the pipe 
despite stating this exact behaviour in documentation, or am I missing 
somethig?


Best regards

Dmitry Bachilo.