Package: dcfldd
Version: 1.3.4.1-2.1
Severity: normal
Tags: patch

Dear Maintainer,

When trying to use sizeprobe=of, dcfldd failed with
an error about the BLKGETSIZE ioctl failing.

Using strace showed dcfldd was trying to ioctl(1, BLKGETSIZE, ...)
instead of the block device specified using of, e.g., of=/dev/md3.

The problem is that it performs ioctl(STDOUT_FILENO, BLKGETSIZE, ...)
unconditionally, instead of using the file descriptor of the output file.

The following patch makes it use the first file in the output list instead:

--- dcfldd-1.3.4.1.orig/dcfldd.c
+++ dcfldd-1.3.4.1/dcfldd.c
@@ -759,7 +759,7 @@ int main(int argc, char **argv)
         else
             sizeprobe(STDIN_FILENO);
     else if (probe == PROBE_OUTPUT)
-        sizeprobe(STDOUT_FILENO);
+        sizeprobe(outputlist->data.fd);
     start_time = time(NULL);
     
     if (do_verify)

-- System Information:
Debian Release: 7.6
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: i386 (i686)

Kernel: Linux 2.6.32-5-686 (SMP w/2 CPU cores)
Locale: LANG=el_GR.UTF8, LC_CTYPE=el_GR.UTF8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages dcfldd depends on:
ii  libc6  2.13-38+deb7u3

dcfldd recommends no packages.

dcfldd suggests no packages.

-- no debconf information


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