SMBFS mount's file cannot be made executable

Thu Aug 15 01:40:00 GMT 2019

> 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
--
Problem reports: http://cygwin.com/problems.html
FAQ: http://cygwin.com/faq/
Documentation: http://cygwin.com/docs.html
Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple