Re: Impossible to give "write" permission on a sub folder
Read the ntfs-3 man page.
Take a look at the man page for ntfs-3g, the section on
Access Handling and Security:
From the ntfs-3g man page:
------------------------------------------------------------
Access Handling and Security
By default, files and directories are owned by the effective
user and group of the mounting process, and ev‐
erybody has full read, write, execution and directory browsing
permissions. You can also assign permissions
to a single user by using the uid and/or the gid options
together with the umask, or fmask and dmask options.
Doing so, Windows users have full access to the files created by
ntfs-3g.
But, by setting the permissions option, you can benefit from the
full ownership and permissions features as
defined by POSIX. Moreover, by defining a Windows-to-Linux
user mapping, the ownerships and permissions are
even applied to Windows users and conversely.
If ntfs-3g is set setuid-root then non-root users will be also
able to mount volumes.
------------------------------------------------------------
You use the defaults option when mounting. I do not know how that
affects access and security for ntfs-3g. I would suggest either using
uid and gid options when mounting instead, or using the
usermapping file that maps Windows users to Debian users.
You need to check which user under Windows owns those folders, which Windows
users have write access to those folders, etc.
As mentioned in the man page, there is a way to map Windows users to
Debian 11 users using the default .NTFS-3G/UserMapping file or a
custom usermapping file with the usermapping mount option.
I used this feature a long time ago, and the format for the usermapping
file is documented in the ntfs-3g man page.
As is said at the beginning of this reply, read the ntfs-3g man page!
HTH,
Chuck
On 11/26/2021 3:29 AM, lists.debian@netc.eu wrote:
Hello to all,
I have a dual boot PC with Windows 10 and Debian 11
This PC has 2 drives, one SSD that has both operating systems and a
HDD where I store all other files (documents, music, images, ...)
The goal is to share this HDD between Windows and Debian. To do it, I
added the following line to the fstab file:
UUID=ACB23705B236D414 /mnt/windows ntfs-3g defaults,umask=000
0 0
the folders lount without any problem to /mnt/windows, all with the
correct permission settings (rwx) :
$ ls -l /mnt/windows/
total 80
drwxrwxrwx 1 root root 4096 14 nov. 20:20 '$RECYCLE.BIN'
drwxrwxrwx 1 root root 4096 24 nov. 15:59 CloudStation
drwxrwxrwx 1 root root 4096 21 nov. 11:44 Documents
-rwxrwxrwx 1 root root 8192 25 juin 08:15 DumpStack.log.tmp
drwxrwxrwx 1 root root 4096 22 nov. 20:41 Images
drwxrwxrwx 1 root root 4096 24 nov. 11:53 Music
drwxrwxrwx 1 root root 8192 23 nov. 06:21 'System Volume Information'
drwxrwxrwx 1 root root 40960 21 nov. 22:22 Downloads
drwxrwxrwx 1 root root 4096 21 nov. 19:44 Videos
My problem is that in some sub folders, I'm not getting the write
("w") permission. For example on the "Documents" one:
$ ls -l /mnt/windows/Documents/
total 117
drwxrwxrwx 1 root root 16384 24 nov. 15:59 User1
-rwxrwxrwx 1 root root 0 26 nov. 2020 Default.rdp
-rwxrwxrwx 1 root root 432 11 mars 2021 desktop.ini
dr-xr-xr-x 1 root root 40960 24 nov. 15:59 User2
drwxrwxrwx 1 root root 16384 24 nov. 16:00 Public
drwxrwxrwx 1 root root 4096 24 nov. 15:59 User3
dr-xr-xr-x 1 root root 20480 21 nov. 12:05 Scan
-rwxrwxrwx 1 root root 18432 4 déc. 2016 Thumbs.db
drwxrwxrwx 1 root root 0 16 nov. 23:13 'Unified Remote'
Most of the folders are OK, but I ave User2 and San that doesn't have
the write ("w") permission...
Do you have any idea on whats going on?
Thanks in advance for all the help,
Berst regards,
Marc
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