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[Samba] Set ACLs on Samba share from Windows

 
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Dadoo
External


Since: Jul 04, 2010
Posts: 4



PostPosted: Sun Jul 04, 2010 10:10 pm    Post subject: [Samba] Set ACLs on Samba share from Windows
Archived from groups: linux>samba (more info?)

I can't seem to verify whether or my first attempt at sending this
message was successful, so I'm reposting it, using a different method. I
apologize if anyone has seen it already.

I have a Samba server, joined to my Windows Active Directory domain, and
I'm having a problem setting ACLs on a share from Windows. On Windows, I
get the error message "Unable to save permission changes on <folder>. The
parameter is incorrect." and when I look in my Samba log, I see the
message "ACL is invalid for set (Invalid argument)".

"getent passwd" and "getent group" return both local and AD users and
groups, respectively.

Here are the relevant lines from my smb.conf:

[global]
workgroup = <My domain>
server string = Samba Server Version %v
log file = /var/log/samba/log.%m
max log size = 50
log level = 3 winbind:10 acls:10
security = ads
realm = <My domain>.LOCAL
encrypt passwords = yes
idmap uid = 2000-10000
idmap gid = 2000-10000
winbind enum groups = yes
winbind enum users = yes
wins server = 10.0.0.65
load printers = no
cups options = raw
[homes]
comment = Home Directories
browseable = no
writable = yes
[printers]
comment = All Printers
path = /var/spool/samba
browseable = no
guest ok = no
writable = no
printable = yes
[paperport]
comment = Test share for PaperPort images
path = /u1/images
admin users = <My domain>\<user1> <My domain>\<me>
public = yes
writable = yes
browseable = yes

I'm sure I'm missing something minor, but I can't figure out what it is.
Anyone have any ideas?

Thanks

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Gaiseric Vandal
External


Since: May 16, 2007
Posts: 16



PostPosted: Mon Jul 05, 2010 1:10 am    Post subject: Re: [Samba] Set ACLs on Samba share from Windows [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

It works for me - Solaris 10, ZFS file system, configured as a PDC or BDC

#testparm -v | grep "acl "

acl compatibility = auto
acl check permissions = Yes
acl group control = No
acl map full control = Yes
force unknown acl user = No
nt acl support = Yes
map acl inherit = No


If you are on linux, ext3 and ext4 should support acl's.

Can you use "setfacl" to change permissions on a file on the unix level
using the uid of a domain user?
Can you, in windows, set permissions for someone defined as a local user?
That might indicated if the problem is really with ACL's or if the problem
is with winbind retrieving users from the domain controller. (Although
getent seems to indicate that that winbind is not the problem.)




-----Original Message-----
From: samba-bounces@lists.samba.org [mailto:samba-bounces@lists.samba.org]
On Behalf Of Dadoo
Sent: Saturday, July 03, 2010 3:46 AM
To: samba@lists.samba.org
Subject: [Samba] Set ACLs on Samba share from Windows


I can't seem to verify whether or my first attempt at sending this
message was successful, so I'm reposting it, using a different method. I
apologize if anyone has seen it already.

I have a Samba server, joined to my Windows Active Directory domain, and
I'm having a problem setting ACLs on a share from Windows. On Windows, I
get the error message "Unable to save permission changes on <folder>. The
parameter is incorrect." and when I look in my Samba log, I see the
message "ACL is invalid for set (Invalid argument)".

"getent passwd" and "getent group" return both local and AD users and
groups, respectively.

Here are the relevant lines from my smb.conf:

[global]
workgroup = <My domain>
server string = Samba Server Version %v
log file = /var/log/samba/log.%m
max log size = 50
log level = 3 winbind:10 acls:10
security = ads
realm = <My domain>.LOCAL
encrypt passwords = yes
idmap uid = 2000-10000
idmap gid = 2000-10000
winbind enum groups = yes
winbind enum users = yes
wins server = 10.0.0.65
load printers = no
cups options = raw
[homes]
comment = Home Directories
browseable = no
writable = yes
[printers]
comment = All Printers
path = /var/spool/samba
browseable = no
guest ok = no
writable = no
printable = yes
[paperport]
comment = Test share for PaperPort images
path = /u1/images
admin users = <My domain>\<user1> <My domain>\<me>
public = yes
writable = yes
browseable = yes

I'm sure I'm missing something minor, but I can't figure out what it is.
Anyone have any ideas?

Thanks

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Dadoo
External


Since: Jul 04, 2010
Posts: 4



PostPosted: Wed Jul 07, 2010 6:10 am    Post subject: Re: [Samba] Set ACLs on Samba share from Windows [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

On Sun, 04 Jul 2010 20:26:47 -0400, Gaiseric Vandal wrote:

> It works for me - Solaris 10, ZFS file system, configured as a PDC or
> BDC
>
> #testparm -v | grep "acl "
>
> acl compatibility = auto
> acl check permissions = Yes
> acl group control = No
> acl map full control = Yes
> force unknown acl user = No
> nt acl support = Yes
> map acl inherit = No

I'll try those settings and see if that works.

> Can you use "setfacl" to change permissions on a file on the unix level
> using the uid of a domain user?

Yes.

> Can you, in windows, set permissions for someone defined as a local
> user?

I don't know. I'll have to set up user mappings to get that to work.

> That might indicated if the problem is really with ACL's or if the
> problem is with winbind retrieving users from the domain controller.
> (Although getent seems to indicate that that winbind is not the
> problem.)

Thanks.

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Dadoo
External


Since: Jul 04, 2010
Posts: 4



PostPosted: Thu Jul 08, 2010 8:10 am    Post subject: Re: [Samba] Set ACLs on Samba share from Windows [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

On Sun, 04 Jul 2010 20:26:47 -0400, Gaiseric Vandal wrote:

> It works for me - Solaris 10, ZFS file system, configured as a PDC or
> BDC
>
> #testparm -v | grep "acl "
>
> acl compatibility = auto
> acl check permissions = Yes
> acl group control = No
> acl map full control = Yes
> force unknown acl user = No
> nt acl support = Yes
> map acl inherit = No

"testparm" gives me the same output.


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Helmut Hullen
External


Since: Feb 19, 2007
Posts: 21



PostPosted: Thu Jul 08, 2010 11:10 am    Post subject: Re: [Samba] Set ACLs on Samba share from Windows [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

Hallo, Dadoo,

Du meintest am 08.07.10:


>> #testparm -v | grep "acl "
>>
>> acl compatibility = auto
>> acl check permissions = Yes
>> acl group control = No
>> acl map full control = Yes
>> force unknown acl user = No
>> nt acl support = Yes
>> map acl inherit = No

> "testparm" gives me the same output.

Just control with

testparm -sv

these options show what Samba does use, not only what is written into
the "smb.conf".

Viele Gruesse!
Helmut
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Dadoo
External


Since: Jul 04, 2010
Posts: 4



PostPosted: Tue Aug 31, 2010 12:10 am    Post subject: Re: [Samba] Set ACLs on Samba share from Windows [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

On Thu, 08 Jul 2010 11:47:00 +0200, Helmut Hullen wrote:
>
> Just control with
>
> testparm -sv
>
> these options show what Samba does use, not only what is written into
> the "smb.conf".
>
> Viele Gruesse!
> Helmut

Sorry it took me so long to get back to you. I have attached the
information you asked for at the end of this message.

I've also done a little more research. I examined some of the Samba
source and discovered the error is coming from a function named
"acl_valid", which is called from "smb_acl_to_posix", in the file
"vfs_posixacl.c". I'll admit I'm no expert on POSIX ACLs, but I have to
wonder if there's a bug in the Linux ACL functions, since
"smb_acl_to_posix" uses *only* ACL functions to manipulate the ACL, and
someone else in this group said that very same function works on Solaris.
Does this work for anyone out there, using a Linux system?

Thanks

=====

Load smb config files from /etc/samba/smb.conf
rlimit_max: rlimit_max (1024) below minimum Windows limit (16384)
Processing section "[homes]"
Processing section "[printers]"
Processing section "[paperport]"
Loaded services file OK.
Server role: ROLE_DOMAIN_MEMBER
[global]
dos charset = CP850
unix charset = UTF-8
display charset = LOCALE
workgroup = <My domain>
realm = <My domain>.LOCAL
netbios name = PPTEST
netbios aliases =
netbios scope =
server string = Samba Server Version %v
interfaces =
bind interfaces only = No
security = ADS
auth methods =
encrypt passwords = Yes
update encrypted = No
client schannel = Auto
server schannel = Auto
allow trusted domains = Yes
map to guest = Never
null passwords = No
obey pam restrictions = No
password server = *
smb passwd file = /var/lib/samba/private/smbpasswd
private dir = /var/lib/samba/private
passdb backend = tdbsam
algorithmic rid base = 1000
root directory =
guest account = nobody
enable privileges = Yes
pam password change = No
passwd program =
passwd chat = *new*password* %n\n *new*password* %n\n *changed*
passwd chat debug = No
passwd chat timeout = 2
check password script =
username map = /etc/samba/smbusers
password level = 0
username level = 0
unix password sync = No
restrict anonymous = 0
lanman auth = No
ntlm auth = Yes
client NTLMv2 auth = No
client lanman auth = No
client plaintext auth = No
preload modules =
dedicated keytab file =
kerberos method = default
map untrusted to domain = No
log level = 3 winbind:3 acls:3 idmap:10
syslog = 1
syslog only = No
log file = /var/log/samba/log.%m
max log size = 50
debug timestamp = Yes
debug prefix timestamp = No
debug hires timestamp = Yes
debug pid = No
debug uid = No
debug class = No
enable core files = Yes
smb ports = 445 139
large readwrite = Yes
max protocol = NT1
min protocol = CORE
min receivefile size = 0
read raw = Yes
write raw = Yes
disable netbios = No
reset on zero vc = No
acl compatibility = auto
defer sharing violations = Yes
nt pipe support = Yes
nt status support = Yes
announce version = 4.9
announce as = NT
max mux = 50
max xmit = 16644
name resolve order = lmhosts wins host bcast
max ttl = 259200
max wins ttl = 518400
min wins ttl = 21600
time server = No
unix extensions = Yes
use spnego = Yes
client signing = auto
server signing = No
client use spnego = Yes
client ldap sasl wrapping = plain
enable asu support = No
svcctl list =
deadtime = 0
getwd cache = Yes
keepalive = 300
lpq cache time = 30
max smbd processes = 0
paranoid server security = Yes
max disk size = 0
max open files = 16384
socket options = TCP_NODELAY
use mmap = Yes
hostname lookups = No
name cache timeout = 660
ctdbd socket =
cluster addresses =
clustering = No
ctdb timeout = 0
load printers = No
printcap cache time = 750
printcap name =
cups server =
cups encrypt = No
cups connection timeout = 30
iprint server =
disable spoolss = No
addport command =
enumports command =
addprinter command =
deleteprinter command =
show add printer wizard = Yes
os2 driver map =
mangling method = hash2
mangle prefix = 1
max stat cache size = 256
stat cache = Yes
machine password timeout = 604800
add user script =
rename user script =
delete user script =
add group script =
delete group script =
add user to group script =
delete user from group script =
set primary group script =
add machine script =
shutdown script =
abort shutdown script =
username map script =
logon script =
logon path = \\%N\%U\profile
logon drive =
logon home = \\%N\%U
domain logons = No
init logon delayed hosts =
init logon delay = 100
os level = 20
lm announce = Auto
lm interval = 60
preferred master = No
local master = Yes
domain master = Auto
browse list = Yes
enhanced browsing = Yes
dns proxy = Yes
wins proxy = No
wins server = 10.0.0.65
wins support = No
wins hook =
kernel oplocks = Yes
lock spin time = 200
oplock break wait time = 0
ldap admin dn =
ldap delete dn = No
ldap group suffix =
ldap idmap suffix =
ldap machine suffix =
ldap passwd sync = no
ldap replication sleep = 1000
ldap suffix =
ldap ssl = start tls
ldap ssl ads = No
ldap deref = auto
ldap follow referral = Auto
ldap timeout = 15
ldap connection timeout = 2
ldap page size = 1024
ldap user suffix =
ldap debug level = 0
ldap debug threshold = 10
eventlog list =
add share command =
change share command =
delete share command =
preload =
lock directory = /var/lib/samba
state directory = /var/lib/samba
cache directory = /var/lib/samba
pid directory = /var/run
utmp directory =
wtmp directory =
utmp = No
default service =
message command =
get quota command =
set quota command =
remote announce =
remote browse sync =
socket address = 0.0.0.0
nmbd bind explicit broadcast = Yes
homedir map = auto.home
afs username map =
afs token lifetime = 604800
log nt token command =
time offset = 0
NIS homedir = No
registry shares = No
usershare allow guests = No
usershare max shares = 0
usershare owner only = Yes
usershare path = /var/lib/samba/usershares
usershare prefix allow list =
usershare prefix deny list =
usershare template share =
panic action =
perfcount module =
host msdfs = Yes
passdb expand explicit = No
idmap backend = tdb
idmap alloc backend =
idmap cache time = 604800
idmap negative cache time = 120
idmap uid = 2000-10000
idmap gid = 2000-10000
template homedir = /home/%D/%U
template shell = /bin/false
winbind separator = \
winbind cache time = 300
winbind reconnect delay = 30
winbind enum users = Yes
winbind enum groups = Yes
winbind use default domain = No
winbind trusted domains only = No
winbind nested groups = Yes
winbind expand groups = 1
winbind nss info = template
winbind refresh tickets = No
winbind offline logon = No
winbind normalize names = No
winbind rpc only = No
create krb5 conf = Yes
comment =
path =
username =
invalid users =
valid users =
admin users =
read list =
write list =
printer admin =
force user =
force group =
read only = Yes
acl check permissions = Yes
acl group control = No
acl map full control = Yes
create mask = 0744
force create mode = 00
security mask = 0777
force security mode = 00
directory mask = 0755
force directory mode = 00
directory security mask = 0777
force directory security mode = 00
force unknown acl user = No
inherit permissions = No
inherit acls = No
inherit owner = No
guest only = No
administrative share = No
guest ok = No
only user = No
hosts allow =
hosts deny =
allocation roundup size = 1048576
aio read size = 0
aio write size = 0
aio write behind =
ea support = No
nt acl support = Yes
profile acls = No
map acl inherit = No
afs share = No
smb encrypt = auto
block size = 1024
change notify = Yes
directory name cache size = 100
kernel change notify = Yes
max connections = 0
min print space = 0
strict allocate = No
strict sync = No
sync always = No
use sendfile = No
write cache size = 0
max reported print jobs = 0
max print jobs = 1000
printable = No
printing = cups
cups options = raw
print command =
lpq command = %p
lprm command =
lppause command =
lpresume command =
queuepause command =
queueresume command =
printer name =
use client driver = No
default devmode = Yes
force printername = No
printjob username = %U
default case = lower
case sensitive = Auto
preserve case = Yes
short preserve case = Yes
mangling char = ~
hide dot files = Yes
hide special files = No
hide unreadable = No
hide unwriteable files = No
delete veto files = No
veto files =
hide files =
veto oplock files =
map archive = Yes
map hidden = No
map system = No
map readonly = yes
mangled names = Yes
store dos attributes = No
dmapi support = No
browseable = Yes
access based share enum = No
blocking locks = Yes
csc policy = manual
fake oplocks = No
locking = Yes
oplocks = Yes
level2 oplocks = Yes
oplock contention limit = 2
posix locking = Yes
strict locking = Auto
share modes = Yes
dfree cache time = 0
dfree command =
copy =
preexec =
preexec close = No
postexec =
root preexec =
root preexec close = No
root postexec =
available = Yes
volume =
fstype = NTFS
set directory = No
wide links = No
follow symlinks = Yes
dont descend =
magic script =
magic output =
delete readonly = No
dos filemode = No
dos filetimes = Yes
dos filetime resolution = No
fake directory create times = No
vfs objects =
msdfs root = No
msdfs proxy =
[homes]
comment = Home Directories
read only = No
browseable = No
[printers]
comment = All Printers
path = /var/spool/samba
printable = Yes
browseable = No
[paperport]
comment = Test share for PaperPort images
path = /u1/images
admin users = <me>, <My domain>\<user1>, <My domain>\<me>
read only = No
guest ok = Yes

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