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Date: Thu, 11 Dec 2025 23:06:37 +0100
Message-ID: <CAKAoaQkoAgN6o6t8HvPtk7PYjTUAC9YXsR9DNfs0sz=Ho9aDXA@mail.gmail.com>
Subject: Cygwin /usr/bin/getconf CASE_INSENSITIVE /path does not recognise
 case-sensitive filesystems...
To: cygwin@cygwin.com
From: Roland Mainz via Cygwin <cygwin@cygwin.com>
Reply-To: Roland Mainz <roland.mainz@nrubsig.org>
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Sender: "Cygwin" <cygwin-bounces~archive-cygwin=delorie.com@cygwin.com>

Hi!

----

I got a couple of bugreports that Cygwin $ getconf CASE_INSENSITIVE
/path # does not work and always reports that the filesystem is
case-insensitive - which is not true for NFSv3, and usually not true
for NFSv4.1 filesystems coming from Linux (NFSv4 supports
case-insensitive filesystems, but that is not the issue...)

Example (/cygdrive/l/ is a case-sensitive filesystem):
---- snip ----
$ getconf CASE_INSENSITIVE /cygdrive/l/builds
1
$ getconf -a /cygdrive/l/builds | fgrep -i case
CASE_INSENSITIVE                    1

$ /usr/lib/csih/getVolInfo /cygdrive/l/builds
Device Type        : 0x07
Characteristics    : 0x00000030
  FILE_REMOVABLE_MEDIA              : FALSE
  FILE_REMOTE_DEVICE                : TRUE
Volume Name        : <nfs://derfwnb4966_ipv4:2049/>
Serial Number      : 5488
Max Filenamelength : 255
Filesystemname     : <NFS>
Flags              : 0x084020cf
  FILE_CASE_SENSITIVE_SEARCH        : TRUE
  FILE_CASE_PRESERVED_NAMES         : TRUE
  FILE_UNICODE_ON_DISK              : TRUE
  FILE_PERSISTENT_ACLS              : TRUE
  FILE_FILE_COMPRESSION             : FALSE
  FILE_VOLUME_QUOTAS                : FALSE
  FILE_SUPPORTS_SPARSE_FILES        : TRUE
  FILE_SUPPORTS_REPARSE_POINTS      : TRUE
  FILE_SUPPORTS_REMOTE_STORAGE      : FALSE
  FILE_RETURNS_CLEANUP_RESULT_INFO  : FALSE
  FILE_SUPPORTS_POSIX_UNLINK_RENAME : FALSE
  FILE_VOLUME_IS_COMPRESSED         : FALSE
  FILE_SUPPORTS_OBJECT_IDS          : FALSE
  FILE_SUPPORTS_ENCRYPTION          : FALSE
  FILE_NAMED_STREAMS                : TRUE
  FILE_READ_ONLY_VOLUME             : FALSE
  FILE_SEQUENTIAL_WRITE_ONCE        : FALSE
  FILE_SUPPORTS_TRANSACTIONS        : FALSE
  FILE_SUPPORTS_HARD_LINKS          : TRUE
  FILE_SUPPORTS_EXTENDED_ATTRIBUTES : TRUE
  FILE_SUPPORTS_OPEN_BY_FILE_ID     : FALSE
  FILE_SUPPORTS_USN_JOURNAL         : FALSE
  FILE_SUPPORTS_INTEGRITY_STREAMS   : FALSE
  FILE_SUPPORTS_BLOCK_REFCOUNTING   : TRUE
  FILE_SUPPORTS_SPARSE_VDL          : FALSE
  FILE_DAX_VOLUME                   : FALSE
  FILE_SUPPORTS_GHOSTING            : FALSE
SectorInfoFlags    : 0x07
  SSINFO_FLAGS_NO_SEEK_PENALTY      : TRUE
  SSINFO_FLAGS_TRIM_ENABLED         : FALSE
---- snip ----

---- snip ----
$ uname -a
CYGWIN_NT-10.0-19045 wingrendel02 3.7.0-0.332.g43ddce194c49.x86_64
2025-12-10 20:22 UTC x86_64 Cygwin
---- snip ----

----

Bye,
Roland
-- 
  __ .  . __
 (o.\ \/ /.o) roland.mainz@nrubsig.org
  \__\/\/__/  MPEG specialist, C&&JAVA&&Sun&&Unix programmer
  /O /==\ O\  TEL +49 641 3992797
 (;O/ \/ \O;)

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