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From: "Lavrentiev, Anton (NIH/NLM/NCBI) [C] via cygwin" <cygwin@cygwin.com>
Reply-To: "Lavrentiev, Anton (NIH/NLM/NCBI) [C]" <lavr@ncbi.nlm.nih.gov>
To: "'cygwin@cygwin.com'" <cygwin@cygwin.com>
Subject: Re: SMBFS mount's file cannot be made executable
Date: Thu, 15 Aug 2019 01:40:25 +0000
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> You can often figure permissions problems

I already figured where the problem was, in how cygwin convers (or, actually doesn't) the UNIX's "x" bit into
the native DAC for the underlying filesystem (to store as, again, "x" in the Linux share).  Missing that DAC, SMBD
returns "Access denied" for an attempt to execute the .exe file.

I don't think that any of the requested output is of any help or indication, rather than to actually show that the
execute permission is missing.

$ /usr/lib/csih/getVolInfo /cygdrive/z
Device Type        : 7
Characteristics    : 10
Volume Name        : <home>
Serial Number      : 3112497429
Max Filenamelength : 255
Filesystemname     : <NTFS>
Flags              : 1006f
  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          : TRUE
  FILE_SUPPORTS_SPARSE_FILES  : TRUE
  FILE_SUPPORTS_REPARSE_POINTS: FALSE
  FILE_SUPPORTS_REMOTE_STORAGE: FALSE
  FILE_VOLUME_IS_COMPRESSED   : FALSE
  FILE_SUPPORTS_OBJECT_IDS    : TRUE
  FILE_SUPPORTS_ENCRYPTION    : FALSE
  FILE_NAMED_STREAMS          : FALSE
  FILE_READ_ONLY_VOLUME       : FALSE
  FILE_SEQUENTIAL_WRITE_ONCE  : FALSE
  FILE_SUPPORTS_TRANSACTIONS  : FALSE

$ pwd
/cygdrive/z

$ gcc hello.c

$ /usr/lib/csih/getVolInfo /cygdrive/z/a.exe
Device Type        : 7
Characteristics    : 10
Volume Name        : <home>
Serial Number      : 3112497429
Max Filenamelength : 255
Filesystemname     : <NTFS>
Flags              : 1006f
  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          : TRUE
  FILE_SUPPORTS_SPARSE_FILES  : TRUE
  FILE_SUPPORTS_REPARSE_POINTS: FALSE
  FILE_SUPPORTS_REMOTE_STORAGE: FALSE
  FILE_VOLUME_IS_COMPRESSED   : FALSE
  FILE_SUPPORTS_OBJECT_IDS    : TRUE
  FILE_SUPPORTS_ENCRYPTION    : FALSE
  FILE_NAMED_STREAMS          : FALSE
  FILE_READ_ONLY_VOLUME       : FALSE
  FILE_SEQUENTIAL_WRITE_ONCE  : FALSE
  FILE_SUPPORTS_TRANSACTIONS  : FALSE

$ ls -dl /cygdrive/z/a.exe
-rw-rw-r--+ 1 lavr cppcore 157753 Aug 14 21:30 /cygdrive/z/a.exe

$ getfacl /cygdrive/z/a.exe
# file: /cygdrive/z/a.exe
# owner: lavr
# group: cppcore
user::rw-
user:lavr:rw-
group::r--
group:cppcore:r--
mask::rw-
other::r--

$ icacls `cygpath -w /cygdrive/z/a.exe`
Z:\a.exe S-1-22-1-4640:(R,W)
         S-1-22-2-5333:(R)
         S-1-22-2-5333:(R)
         S-1-22-1-4640:(R,W)
         Everyone:(R)

Successfully processed 1 files; Failed processing 0 files


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