Hi
Is there a way of getting samba to use the passwd file entries when
utilising POSIX extended acls.
I have two groups of users
1) A vast amount of users who access filestore via windows only. In this
case I winbind and idmap to assign random UNIX uids as is normal.
2) I also have a much smaller group of users who use NFS and CIFS to
access the same area. In this case I put an entry in the password file
on the samba server to set the uid to a particular value so that samba
may write files with that uid. This means that a NFS client may also
access those files provided it has an appropriate user setup.
All this works very well. However I was going to use POSIX extended ACLs
to facilitate sharing but the samba side seems not to work the way I had
hoped. For example an linux user, user-A (uid 1234) may set an acl on a
directory for user-B (uid 12345) so that he may access it, and this
works with NFS (version3) . It seems however that samba does not use the
entries in the passwd file to map uids when it comes to extended acls
and always maps it to a random uid via winbind.
The symptom of this is that a user via samba writes files with uid 1234
but cannot access a file produced from an NFS client with an acl giving
read/write permission to uid 1234. It also works this way when setting
acls via samba - acls are always assigned using the random uid not the
uid as defined in the password file which means that users on NFS
clients cannot read files they should.
My setup is clustered samba 3.5.8 using ctdb and GPFS 3.3 as the
parallel filesystem. testparm -v is below. nsswitch.conf does not point
to winbind.
Does anyone have any pointers. Am I missing something simple?
Thanks
Bob
[global]
dos charset = CP850
unix charset = UTF-8
display charset = LOCALE
workgroup =********************
realm =**************************
netbios name = ************************
netbios aliases netbios scope server string = Samba 3.5.8
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 = Bad User
null passwords = No
obey pam restrictions = No
password server = *********************
smb passwd file = /usr/local/samba-3.5.8/private/smbpasswd
private dir = /RDSF_REPL/gpfs_admin/cifs_state/
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 password level = 0
username level = 0
unix password sync = No
restrict anonymous = 2
lanman auth = No
ntlm auth = Yes
client NTLMv2 auth = Yes
client lanman auth = No
client plaintext auth = No
preload modules dedicated keytab file kerberos method = default
map untrusted to domain = No
log level = 1 acls:10 idmap:10
syslog = 1
syslog only = Yes
log file = /var/log/samba/log.%m
max log size = 5000
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 SO_RCVBUF=8192 SO_SNDBUF=8192
use mmap = Yes
hostname lookups = No
name cache timeout = 660
ctdbd socket cluster addresses clustering = Yes
ctdb timeout = 0
load printers = Yes
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 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 =
/usr/local/samba-3.5.8/var/locks
state directory = /usr/local/samba-3.5.8/var/locks
cache directory = /usr/local/samba-3.5.8/var/locks
pid directory = /usr/local/samba-3.5.8/var/locks
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 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 = /usr/local/samba-3.5.8/var/locks/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 = tdb2
idmap alloc backend idmap cache time = 604800
idmap negative cache time = 120
idmap uid = 100000-200000
idmap gid = 100000-200000
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 = Yes
winbind trusted domains only = No
winbind nested groups = Yes
winbind expand groups = 1
winbind nss info = template
winbind refresh tickets = Yes
winbind offline logon = No
winbind normalize names = No
winbind rpc only = Yes
create krb5 conf = Yes
nfs4: acedup = merge
nfs4: chown = yes
nfs4: mode = special
gpfs:winattr = No
gpfs:sharemodes = No
fileid:mapping = fsname
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 = Yes
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 = bsd
cups options print command = lpr -r -P'%p' %s
lpq command = lpq -P'%p'
lprm command = lprm -P'%p' %j
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 = gpfs, fileid
msdfs root = No
msdfs proxy
[ACRC]
comment = ACRC Space for use and testing
path = *************************
valid users = ***************************
read only = No
inherit acls = Yes
hosts allow = ****************
nfs4: acedup = merge
nfs4: chown = yes
nfs4: mode = special
gpfs:winattr = No
--
Bob Cregan
Senior Storage Systems Administrator
ACRC
Bristol University
Tel: +44 (0) 117 331 4421
Mobile: +44 (0) 7712388129
