[Samba] CIFS mount not applying setuids
Ben Tyger
ben.tyger at tygerclan.net
Wed Jun 24 03:19:16 GMT 2009
Hello all,
I've been dealing with this problem for years now and I am a bit fed
up with it. Maybe some of you all can shed some light on the situation.
I am having problems with my samba server setting the
uid/gid/permissions incorrectly when a file is written to the server
filesystem over cifs. I currently use the account remotemounter for
mounting samba shares. Even with the 'setuids' options set, it still
defaults back to writing files as the remotemounter's default
user:group:umask settings. I know that samba will rollback to standard
UID/GID of the mounting username if CIFS Unix Extensions are
unavailable. I don't know why CIFS Unix Extensions wouldn't be
available. Anybody have any ideas?
---Client mount command ---
hydrian at bran ~ $ sudo mount -vv /mnt/Multimedia/
parsing options:
rw,credentials=/etc/samba/cred-remotemounter,setuids,acl,noperms
mount.cifs kernel mount options
unc=//brigid.tygerclan.local\multimedia,ip=192.168.1.4,user=remotemounter,pass={mypassword},ver=1,rw,credentials=/etc/samba/cred-remotemounter,setuids,acl,noperms
Client: Gentoo Linux
net-fs/mount-cifs-3.0.30
net-fs/samba-3.0.33
--------------------------------------
--- Server Config----------------
[global]
dos charset = CP850
unix charset = UTF-8
display charset = LOCALE
workgroup = TYGERCLAN
realm =
netbios name = BRIGID
netbios aliases =
netbios scope =
server string = brigid.tygerclan.net
interfaces =
bind interfaces only = No
security = USER
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 = /etc/samba/smbpasswd
private dir = /etc/samba
passdb backend = ldapsam:ldap://ldap-slave.tygerclan.local
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 = 0
lanman auth = No
ntlm auth = Yes
client NTLMv2 auth = No
client lanman auth = Yes
client plaintext auth = No
preload modules =
use kerberos keytab = No
log level = 0
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 = No
debug pid = No
debug uid = No
enable core files = Yes
smb ports = 445 139
large readwrite = Yes
max protocol = NT1
min protocol = CORE
read bmpx = No
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
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 = 10000
open files database hash size = 10007
socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
use mmap = Yes
hostname lookups = No
name cache timeout = 660
load printers = Yes
printcap cache time = 750
printcap name = cups
cups server =
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 = 1024
stat cache = Yes
machine password timeout = 604800
add user script = /usr/sbin/smbldap-useradd '%u'
rename user script =
delete user script = /usr/sbin/smbldap-userdel '%u'
add group script = /usr/sbin/smbldap-groupadd '%g' &&
/usr/sbin/smbldap-groupshow %g|awk '/^gidNumber:/ {print $2}'
delete group script = /usr/sbin/smbldap-userdel '%g'
add user to group script = /usr/sbin/smbldap-groupmod -m '%u' '%g'
delete user from group script = /usr/sbin/smbldap-groupmod -x
'%u' '%g'
set primary group script = /usr/sbin/smbldap-usermod -g '%g' '%u'
add machine script = /usr/sbin/smbldap-useradd -w -d /dev/null
-g 'Domain Computers' -c 'Machine Account' -s /bin/false '%u'
shutdown script =
abort shutdown script =
username map script =
logon script =
logon path = \\brigid.tygerclan.net\Profiles\%U
logon drive =
logon home = \\brigid.tygerclan.local\%U\.profile
domain logons = Yes
os level = 20
lm announce = Auto
lm interval = 60
preferred master = Yes
local master = Yes
domain master = Yes
browse list = Yes
enhanced browsing = Yes
dns proxy = No
wins proxy = No
wins server =
wins support = Yes
wins hook =
kernel oplocks = Yes
lock spin time = 200
oplock break wait time = 0
ldap admin dn = cn=Manager,dc=tygerclan,dc=net
ldap delete dn = No
ldap group suffix = ou=Groups
ldap idmap suffix = ou=Idmap
ldap machine suffix = ou=Computers
ldap passwd sync = no
ldap replication sleep = 1000
ldap suffix = dc=tygerclan,dc=net
ldap ssl = no
ldap timeout = 15
ldap page size = 1024
ldap user suffix = ou=People
ldap debug level = 0
ldap debug threshold = 10
add share command =
change share command =
delete share command =
eventlog list =
config file =
preload =
lock directory =
pid directory = /var/run/samba
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
homedir map = auto.home
afs username map =
afs token lifetime = 604800
log nt token command =
time offset = 0
NIS homedir = No
usershare allow guests = No
usershare max shares = 100
usershare owner only = Yes
usershare path = /var/lib/samba/usershares
usershare prefix allow list =
usershare prefix deny list =
usershare template share =
panic action =
host msdfs = Yes
passdb expand explicit = No
idmap domains =
idmap backend =
idmap alloc backend =
idmap cache time = 900
idmap negative cache time = 120
idmap uid =
idmap gid =
template homedir = /home/%D/%U
template shell = /bin/false
winbind separator = \
winbind cache time = 300
winbind enum users = No
winbind enum groups = No
winbind use default domain = No
winbind trusted domains only = No
winbind nested groups = Yes
winbind nss info = template
winbind refresh tickets = No
winbind offline logon = No
winbind normalize names = No
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 = Yes
nt acl support = Yes
profile acls = No
map acl inherit = No
afs share = No
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 =
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
mangled map =
store dos attributes = No
dmapi support = No
browseable = Yes
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 =
include =
preexec =
preexec close = No
postexec =
root preexec =
root preexec close = No
root postexec =
available = Yes
volume =
fstype = NTFS
set directory = No
wide links = Yes
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
[netlogon]
comment = Network Logon Service
path = /var/lib/samba/netlogon
guest ok = Yes
[Profiles]
path = /var/lib/samba/profiles
guest ok = Yes
browseable = No
[printers]
comment = All Printers
path = /var/spool/samba
create mask = 0700
guest ok = Yes
printable = Yes
browseable = No
[print$]
path = /var/lib/samba/printers
write list = @adm, root
guest ok = Yes
[portage]
comment = Gentoo Portage files
path = /data/distro-specific/Gentoo
valid users = portage
write list = portage
force user = root
force group = portage
read only = No
create mask = 0750
force create mode = 0640
directory mask = 0750
force directory mode = 0750
hosts allow = 192.168.1.
[Multimedia]
path = /data/archive/Multimedia
valid users = @Multimedia
write list = @Multimedia
[Adult]
path = /data/archive/Adult
valid users = @Adult
write list = @Adult
read only = No
browseable = No
[Windows]
comment = Windows Applications
path = /data/archive/Windows
write list = @Windows
force group = Windows
create mask = 0640
force create mode = 0640
directory mask = 0770
force directory mode = 0770
[Linux]
comment = Linux Files
path = /data/archive/Linux
write list = @Linux
force group = Linux
create mask = 0640
force create mode = 0640
directory mask = 0770
force directory mode = 0770
[Roms]
comment = Roms Image Files
path = /data/archive/Roms
valid users = @Roms
write list = @Roms
force group = Roms
create mask = 0640
force create mode = 0640
directory mask = 0770
force directory mode = 0770
[ISOs]
comment = Mounted ISOs
path = /mnt/ISOs
read list = @ISOs
[btimport]
comment = Place .torrent files here to be downloaded
path = /data/bittorrent/import
valid users = @p2pusers
write list = @p2pusers
force user = p2p
read only = No
[BTDownloads]
comment = Completed BitTorrents
path = /data/bittorrent/complete
valid users = @p2pusers
write list = @p2pusers
Samba-3.0.28a
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