windows share mounted on linux, can't edit or delete existing files


I've mounted a share from my Windows Server on a linux (RHEL) server and I can access all files, I can create/edit/delete new files.
But I can't modify or delete existing files. I can open and read them though.
Even as root I can't do these things.

'ls -al' shows the rights on the file as follows: -rwxrwxrwx. (including the . at the end).

I've mounted the share as follows:
 mount -t cifs // /home/shareddocs -o rw,user=username,password="userpassword",uid=username,gid="domain users",vers=2.1,user_xattr,dir_mode=0777,file_mode=0777

Does anybody have any idea how to solve this? I suspect this might have something to do with selinux?
BelgianITGuyIT ManagerAsked:
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Daniel McAllisterPresident, IT4SOHO, LLCCommented:
It appears that the user for which you authenticated to the CIFS share does not have the permissions you seek.
I'd be curious to see the output of "getfacl <path to file>" (the dot on the end is likely the acl for the file -- that's an Access Control List -- that overrides the "standard" *nix permissions (except for owner permissions).
Also, you don't report the UID/GID shown on the output of the ls -l command -- do they show the CIFS user or some local user (or root)?
Daniel McAllisterPresident, IT4SOHO, LLCCommented:
As with all shared files/folders, you must have DUAL permissions that allow you to do whatever:
 - You must have the appropriate SHARE permissions (that is, the file/folder that is being shared must have given YOU (the accessing user) the permissions you seek -- in the SHARE part of the permissions
 - You must ALSO have the appropriate FILE permissions

I hope this helps...
BelgianITGuyIT ManagerAuthor Commented:
Hi Daniel,

thanks for the comments.
When I did a getfacl of the file, I got #group: domain\040users. Which looked weird, so I changed my mount command to gid="e-team" instead of gid="domain users", thinking the space caused problems, but this didn't solve it:

if I do a ls -al on that file I get:
-rwxrwxrwx. 1 bob e-team  17 Sep26 16:38 testfile.txt
(bob is the cifs user, e-team is the cifs group used to mount the share)

getfacl testfile.txt shows :
# file: testfile.txt
# owner: bob
# group: e-team

I am logged in as user1@domain
if I do a groups user1@domain I get:
user1@domain : domain users e-team it BUILTIN+users

So I am a member of e-team, and group permissions are rwx. I don't get why I only have read rights on the file, no write, no delete.
I can do a cat testfile.txt, and open it in vi, but can't save it.

Could this be a problem with selinux?  I have very little experience/knowledge about it, but I remember having a problem with it in the past where files shared by samba were not visible to the users. But that was mounting a folder shared by samba on linux server 1 to linux server 2. No MS Windows Server was involved in that case.

command getsebool -a |grep samba shows:
samba_create_home_dirs --> off
samba_domain_controller --> off
samba_enable_home_dirs --> off
samba_export_all_ro --> off
samba_export_all_rw --> off
samba_load_libgfapi --> off
samba_portmapper --> off
samba_run_unconfined --> off
samba_share_fusefs --> off
samba_share_nfs --> off
sanlock_use_samba --> off
tmpreaper_use_samba --> off
use_samba_home_dirs --> off
virt_use_samba --> off

command getsebool -a |grep smb shows:
smbd_anon_write --> off

Is one of these settings the culprit?
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BelgianITGuyIT ManagerAuthor Commented:
Maybe it doesn't have anything to do with selinux:
I changed the mode to permissive, rebooted the server, remounted the share: still the same problem.

Extra info:
even user bob (who owns the files, since the share is mounted as user bob) doesn't have write access to the file when I ssh into the server as bob.

if I do a ls -al on that file I get:
-rwxrwxrwx. 1 bob e-team  17 Sep26 16:38 testfile.txt
(bob is the cifs user, e-team is the cifs group used to mount the share)

getfacl testfile.txt shows :
# file: testfile.txt
# owner: bob
# group: e-team
BelgianITGuyIT ManagerAuthor Commented:
Finally solved it. Apparently the user used to mount the windows share was not a member of the group used.
Must have been an oversight when creating this user a couple of years ago.

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Daniel McAllisterPresident, IT4SOHO, LLCCommented:
I'm glad you found the issue. Permissions in share situations are seldom as straightforward as people think.
BelgianITGuyIT ManagerAuthor Commented:
through trial & error I found out that the windows user was not a member of the correct group.
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