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Date: Sat, 15 Jan 2011 15:35:33 +0100
From: Christian Franke <Christian DOT Franke AT t-online DOT de>
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To: cygwin AT cygwin DOT com
Subject: Output of /proc/partitions now incomplete on WinXP
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At least under WinXP SP3 the output of /proc/partitions does not longer 
list sda1, sda2, ... even if run with admin rights:

# cygcheck -f /bin/cygwin1.dll
cygwin-1.7.7-1

# cat /proc/partitions
major minor  #blocks  name

     8     0 976762584 sda
     8    16 976762584 sdb

It worked with 1.7.5-1 (but with admin rights only).

strace output contains this line for each missing sdXN:

... [main] cat 3992 format_proc_partitions: DeviceIoControl Win32 error 5

Problem is likely introduced by fhandler_proc.cc 1.91. The new method 
without FILE_READ_DATA permission may work on Win7 but is apparently not 
backward compatible with XP.

Christian


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