On 10/5/2016 12:40 AM, Marco Atzeri wrote:
On 05/10/2016 06:31, Mitch Deoudes wrote:
mkdir has suddenly started creating directories with strange
permissions. As far as I can tell, it's related to making directories
nested inside other directories that were also created within cygwin.
As you create deeper and deeper nestings, the perms get more and more
screwed up. It starts at the second level deep, with the setuid flag,
and eventually gets to the point where you're making directories that
don't even have user read/write.
I tried this on a brand new installation of the latest cygwin64, with no
modifications, as of just now:
mitch@calculonjr ~/src/etc/rsync
$ umask
0022
mitch@calculonjr ~/src/etc/rsync
$ mkdir baz
mitch@calculonjr ~/src/etc/rsync
$ ls -ld baz
drwxrwxr-x+ 1 mitch None 0 Oct 5 00:11 baz <--- first dir looks
reasonable (but doesn't match umask)
mitch@calculonjr ~/src/etc/rsync
$ mkdir baz/bob
mitch@calculonjr ~/src/etc/rsync
$ ls -l baz
total 0
drwsrwsr-t+ 1 mitch None 0 Oct 5 00:11 bob <--- second dir is weird
mitch@calculonjr ~/src/etc/rsync
$ mkdir baz/bob/foo
mitch@calculonjr ~/src/etc/rsync
$ ls -l baz/bob/
total 0
d--Srws--T+ 1 mitch None 0 Oct 5 00:12 foo <--- third dir doesn't
even have user read/write
mitch@calculonjr ~/src/etc/rsync
$ mkdir baz/bob/foo/blob
mkdir: cannot create directory `baz/bob/foo/blob': Permission denied
Any guesses what might be causing this? I'm pretty sure this was
working as of my last update, which was probably several months ago.
mitch
where is your home ?
$ cygpath -u ~
/home/marco
and what are its ACLS ?
$ cacls $(cygpath -w ~)
E:\cygwin64\home\marco MATZERI\marco:F
BUILTIN\Administrators:R
Everyone:R
CREATOR OWNER:(OI)(CI)(IO)F
CREATOR GROUP:(OI)(CI)(IO)R
Everyone:(OI)(CI)(IO)R
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Hmm... in checking the acl's on my home dir, I noticed there was an
entry for an unkown user. Probably left over from the last time I
migrated my data to a new windows install. I deleted that entry via the
Windows properties->security tab, which triggered a massive re-write of
all the permissions for everything in my home dir. Now mkdir seems to
work fine.
No idea why that would cause/fix the problem. Especially given the fact
that said data migration happened probably years ago. My home dir acl's
do look a little convoluted compared to yours, though:
Everyone:(special access:)
READ_CONTROL
SYNCHRONIZE
FILE_READ_EA
FILE_READ_ATTRIBUTES
CREATOR OWNER:(OI)(CI)(IO)F
NT AUTHORITY\SYSTEM:(OI)(CI)F
calculonjr\mitch:(OI)(CI)F
BUILTIN\Administrators:(OI)(CI)F
BUILTIN\Users:(special access:)
READ_CONTROL
SYNCHRONIZE
FILE_READ_EA
FILE_READ_ATTRIBUTES
BUILTIN\Users:(CI)(IO)(special access:)
SYNCHRONIZE
FILE_WRITE_DATA
FILE_APPEND_DATA
BUILTIN\Administrators:(ID)F
BUILTIN\Administrators:(OI)(CI)(IO)(ID)F
NT AUTHORITY\SYSTEM:(ID)F
NT AUTHORITY\SYSTEM:(OI)(CI)(IO)(ID)F
NT AUTHORITY\Authenticated Users:(ID)C
NT AUTHORITY\Authenticated Users:(OI)(CI)(IO)(ID)C
BUILTIN\Users:(ID)R
BUILTIN\Users:(OI)(CI)(IO)(ID)(special access:)
GENERIC_READ
GENERIC_EXECUTE
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