Samba on an embedded arm machine

Adam Pigg piggz1 at
Thu Feb 22 10:00:48 GMT 2007


Im trying to get samba to run on a media player which runs linux.

The processor is an arm, and ive managed to compile samba using the following 
options using the uclibc cross compiler at

export LD_LIBARY_PATH=/usr/local/arm-elf/lib
export CPPFLAGS=-I/usr/local/arm-elf/include
export LDFLAGS=-L/usr/local/arm-elf/lib
export CC=arm-elf-gcc
export CFLAGS="-Wl,-elf2flt"
./configure --prefix=/cdrom/samba --host=i686 --target=arm-elf --without-cups --without-libsmbclient --without-dns-updates --without-smbmount --without-cifsmount --without-ldap

I also had to modify libads/dns.c to wrap all calls to dn_expand() with #ifdef 
WITH_LIBRESOLV as uclibc's libresolv is just a stub.

Doing this, samba compiles and starts to run....using smdb -i, it errors 
trying to set up the guest user.  In smb.conf i have guest account = ftp, 
which exists in /etc/passwd, but there is no /etc/groups on this machine.

Is there anyway i can patch samba to run?



/cdrom/samba/sbin # cat /etc/passwd

Output of smbd -i
/cdrom/samba # ./sbin/smbd -i
smbd version 3.0.24 started.
Copyright Andrew Tridgell and the Samba Team 1992-2006
Processing section "[public]"
adding IPC service
reloading printcap cache
Unable to open printcap file /etc/printcap for read!
reload status: error
reloading printcap cache
Unable to open printcap file /etc/printcap for read!
reload status: error
added interface ip= bcast= nmask=
loaded services
get_root_nt_token: getpwnam"root") failed!
get_root_nt_token: getpwnam"root") failed!
se_access_check: user sid is S-1-1-0
se_access_check: also S-1-5-2
se_access_check: also S-1-5-7
init_services_keys: key lookup failed! (WERR_ACCESS_DENIED)
push_sec_ctx(0, 0) : sec_ctx_stack_ndx = 1
push_conn_ctx(0) : conn_ctx_stack_ndx = 0
setting sec ctx (0, 0) - sec_ctx_stack_ndx = 1
pop_sec_ctx (0, 0) - sec_ctx_stack_ndx = 0
push_sec_ctx(0, 0) : sec_ctx_stack_ndx = 1
push_conn_ctx(0) : conn_ctx_stack_ndx = 0
setting sec ctx (0, 0) - sec_ctx_stack_ndx = 1
getgrouplist_internals: initgroups() failed!
pop_sec_ctx (0, 0) - sec_ctx_stack_ndx = 0
push_sec_ctx(0, 0) : sec_ctx_stack_ndx = 1
push_conn_ctx(0) : conn_ctx_stack_ndx = 0
setting sec ctx (0, 0) - sec_ctx_stack_ndx = 1
getgrouplist_internals: initgroups() failed!
pop_sec_ctx (0, 0) - sec_ctx_stack_ndx = 0
get_user_groups: failed to get the unix group list
ERROR: failed to setup guest info.

-------------- next part --------------

# This is the main Samba configuration file. You should read the
# smb.conf(5) manual page in order to understand the options listed
# here. Samba has a huge number of configurable options (perhaps too
# many!) most of which are not shown in this example
# Any line which starts with a ; (semi-colon) or a # (hash) 
# is a comment and is ignored. In this example we will use a #
# for commentry and a ; for parts of the config file that you
# may wish to enable
# NOTE: Whenever you modify this file you should run the command "testparm"
# to check that you have not made any basic syntactic errors. 
#======================= Global Settings =====================================

# 1. Server Naming Options:
# workgroup = NT-Domain-Name or Workgroup-Name
   workgroup = MDKGROUP

# netbios name is the name you will see in "Network Neighbourhood",
# but defaults to your hostname
  netbios name = mg35

# server string is the equivalent of the NT Description field
   server string = Samba Server MG35

# Message command is run by samba when a "popup" message is sent to it.
# The example below is for use with LinPopUp:
; message command = /usr/bin/linpopup "%f" "%m" %s; rm %s

# 3. Logging Options:
# this tells Samba to use a separate log file for each machine
# that connects
   log file = /cdrom/samba/var/log/samba/%m.log

# Put a capping on the size of the log files (in Kb).
   max log size = 50

# Set the log (verbosity) level (0 <= log level <= 10)
 log level = 3

# 4. Security and Domain Membership Options:
# This option is important for security. It allows you to restrict
# connections to machines which are on your local network. The
# following example restricts access to two C class networks and
# the "loopback" interface. For more examples of the syntax see
# the smb.conf man page. Do not enable this if (tcp/ip) name resolution does
# not work for all the hosts in your network.
#   hosts allow = 192.168.1. 192.168.2. 127.

# Uncomment this if you want a guest account, you must add this to /etc/passwd
# otherwise the user "nobody" is used
#  guest account = pcguest
# Allow users to map to guest:
  map to guest = bad user

# Security mode. Most people will want user level security. See
# security_level.txt for details.
   security = share

# Password Level allows matching of _n_ characters of the password for
# all combinations of upper and lower case.
#  password level = 8
#  username level = 8

# You may wish to use password encryption. Please read
# ENCRYPTION.txt, Win95.txt and WinNT.txt in the Samba documentation.
# Do not enable this option unless you have read those documents
# Encrypted passwords are required for any use of samba in a Windows NT domain
# The smbpasswd file is only required by a server doing authentication, thus
# members of a domain do not need one.
  encrypt passwords = yes
  smb passwd file = /cdrom/samba/var/smbpasswd

# The following are needed to allow password changing from Windows to
# also update the Linux system password.
# NOTE: Use these with 'encrypt passwords' and 'smb passwd file' above.
# NOTE2: You do NOT need these to allow workstations to change only
#        the encrypted SMB passwords. They allow the Unix password
#        to be kept in sync with the SMB password.
;  unix password sync = Yes
# You either need to setup a passwd program and passwd chat, or
# enable pam password change
;  pam password change = yes
#  passwd program = /usr/bin/passwd '%u'
;  passwd chat = *New*UNIX*password* %n\n *Re*ype*new*UNIX*password* %n\n \

# Unix users can map to different SMB User names
;  username map = /etc/samba/smbusers

# Using the following line enables you to customise your configuration
# on a per machine basis. The %m gets replaced with the netbios name
# of the machine that is connecting
#   include = /etc/samba/smb.conf.%m

# Options for using winbind. Winbind allows you to do all account and
# authentication from a Windows or samba domain controller, creating
# accounts on the fly, and maintaining a mapping of Windows RIDs to unix uid's 
# and gid's. winbind uid and winbind gid are the only required parameters.
# winbind uid is the range of uid's winbind can use when mapping RIDs to uid's
#  idmap uid = 10000-20000
# winbind gid is the range of uid's winbind can use when mapping RIDs to gid's
#  idmap gid = 10000-20000
# winbind separator is the character a user must use between their domain
# name and username, defaults to "\"
#  winbind separator = +
# winbind use default domain allows you to have winbind return usernames
# in the form user instead of DOMAIN+user for the domain listed in the
# workgroup parameter.
#  winbind use default domain = yes
# template homedir determines the home directory for winbind users, with 
# %D expanding to their domain name and %U expanding to their username:
#  template homedir = /home/%D/%U

# When using winbind, you may want to have samba create home directories
# on the fly for authenticated users. Ensure that /etc/pam.d/samba is
# using 'service=system-auth-winbind' in pam_stack modules, and then
# enable obedience of pam restrictions below:
#  obey pam restrictions = yes

# template shell determines the shell users authenticated by winbind get
#  template shell = /bin/bash

# 5. Browser Control and Networking Options:
# Most people will find that this option gives better performance.
# See speed.txt and the manual pages for details
   socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192

# Configure Samba to use multiple interfaces
# If you have multiple network interfaces then you must list them
# here. See the man page for details.
   interfaces = eth0

# Configure remote browse list synchronisation here
#  request announcement to, or browse list sync from:
#       a specific host or from / to a whole subnet (see below)
#   remote browse sync =
# Cause this host to announce itself to local subnets here
#   remote announce =

# set local master to no if you don't want Samba to become a master
# browser on your network. Otherwise the normal election rules apply
#   local master = no

# OS Level determines the precedence of this server in master browser
# elections. The default value should be reasonable
#   os level = 33

# Domain Master specifies Samba to be the Domain Master Browser. This
# allows Samba to collate browse lists between subnets. Don't use this
# if you already have a Windows NT domain controller doing this job
#   domain master = yes 

# Preferred Master causes Samba to force a local browser election on startup
# and gives it a slightly higher chance of winning the election
#   preferred master = yes

# 6. Domain Control Options:
# Enable this if you want Samba to be a domain logon server for 
# Windows95 workstations or Primary Domain Controller for WinNT and Win2k
#   domain logons = yes

# if you enable domain logons then you may want a per-machine or
# per user logon script
# run a specific logon batch file per workstation (machine)
#   logon script = %m.bat
# run a specific logon batch file per username
#   logon script = %u.bat

# Where to store roaming profiles for WinNT and Win2k
#        %L substitutes for this servers netbios name, %u is username
#        You must uncomment the [Profiles] share below
#   logon path = \\%L\Profiles\%u

# Where to store roaming profiles for Win9x. Be careful with this as it also
# impacts where Win2k finds it's /HOME share
# logon home = \\%L\%u\.profile

# The add user script is used by a domain member to add local user accounts
# that have been authenticated by the domain controller, or when adding
# users via the Windows NT Tools (ie User Manager for Domains).

# Scripts for file (passwd, smbpasswd) backend:
# add user script = /usr/sbin/useradd -s /bin/false '%u'
# delete user script = /usr/sbin/userdel '%s'
# add user to group script = /usr/bin/gpasswd -a '%u' '%g'
# delete user from group script = /usr/bin/gpasswd -d '%u' '%g'
# set primary group script = /usr/sbin/usermod -g '%g' '%u'
# add group script = /usr/sbin/groupadd %g && getent group '%g'|awk -F: '{print $3}'
# delete group script = /usr/sbin/groupdel '%g'

# Scripts for LDAP backend (assumes nss_ldap is in use on the domain controller,
# and needs configuration in
# add user script = /usr/sbin/smbldap-useradd -m '%u'
# delete user script = /usr/sbin/smbldap-userdel '%u'
# 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 group script = /usr/sbin/smbldap-groupadd '%g' && /usr/sbin/smbldap-groupshow %g|awk '/^gidNumber:/ {print $2}'
# delete group script = /usr/sbin/smbldap-groupdel '%g'

# The add machine script is use by a samba server configured as a domain
# controller to add local machine accounts when adding machines to the domain.
# The script must work from the command line when replacing the macros,
# or the operation will fail. Check that groups exist if forcing a group.
# Script for domain controller for adding machines:
# add machine script = /usr/sbin/useradd -d /dev/null -g machines -c 'Machine Account' -s /bin/false -M '%u'
# Script for domain controller with LDAP backend for adding machines (please
# configure in /etc/samba/ first):
# add machine script = /usr/sbin/smbldap-useradd -w -d /dev/null -c 'Machine Account' -s /bin/false '%u'

# Domain groups:
# Domain groups are now configured by using the 'net groupmap' tool

# Enable priveleges, ie allowing members of Domain Admins to join machines
# to the domain
# enable privileges = yes

# 7. Name Resolution Options:
# All NetBIOS names must be resolved to IP Addresses
# 'Name Resolve Order' allows the named resolution mechanism to be specified
# the default order is "host lmhosts wins bcast". "host" means use the unix
# system gethostbyname() function call that will use either /etc/hosts OR
# DNS or NIS depending on the settings of /etc/host.config, /etc/nsswitch.conf
# and the /etc/resolv.conf file. "host" therefore is system configuration
# dependant. This parameter is most often of use to prevent DNS lookups
# in order to resolve NetBIOS names to IP Addresses. Use with care!
# The example below excludes use of name resolution for machines that are NOT
# on the local network segment
# - OR - are not deliberately to be known via lmhosts or via WINS.
# name resolve order = wins lmhosts bcast

# Windows Internet Name Serving Support Section:
# WINS Support - Tells the NMBD component of Samba to enable it's WINS Server
   wins support = yes

# WINS Server - Tells the NMBD components of Samba to be a WINS Client
#       Note: Samba can be either a WINS Server, or a WINS Client, but NOT both
#   wins server = w.x.y.z

# WINS Proxy - Tells Samba to answer name resolution queries on
# behalf of a non WINS capable client, for this to work there must be
# at least one  WINS Server on the network. The default is NO.
#   wins proxy = yes

# DNS Proxy - tells Samba whether or not to try to resolve NetBIOS names
# via DNS nslookups. The built-in default for versions 1.9.17 is yes,
# this has been changed in version 1.9.18 to no.
   dns proxy = no 

# 8. File Naming Options:
# Case Preservation can be handy - system default is _no_
# NOTE: These can be set on a per share basis
#  preserve case = no
#  short preserve case = no
# Default case is normally upper case for all DOS files
#  default case = lower
# Be very careful with case sensitivity - it can break things!
#  case sensitive = no

# Enabling internationalization:
# you can match a Windows code page with a UNIX character set.
# Windows: 437 (US), 737 (GREEK), 850 (Latin1 - Western European),
# 852 (Eastern Eu.), 861 (Icelandic), 932 (Cyrillic - Russian),
# 936 (Japanese - Shift-JIS), 936 (Simpl. Chinese), 949 (Korean Hangul),
# 950 (Trad. Chin.).
# UNIX: ISO8859-1 (Western European), ISO8859-2 (Eastern Eu.),
# ISO8859-5 (Russian Cyrillic), KOI8-R (Alt-Russ. Cyril.)
# This is an example for french users:
#   dos charset = 850
#   unix charset = ISO8859-1

#============================ Share Definitions ==============================
   comment = Home Directories
   browseable = no
   writable = yes
# You can enable VFS recycle bin and on-access virus-scanning on a per 
# share basis:
# Uncomment the next 2 lines (make sure you create a .recycle folder in 
# the base of the share and ensure all users will have write access to it.
# For virus scanning, install samba-vscan-clamav and ensure the clamd service
# is running
#   vfs objects = vscan-clamav recycle
#   vscan-clamav: config-file = /etc/samba/vscan-clamav.conf

# A publicly accessible directory, but read only, except for people in
# the "staff" group
   comment = Public Stuff
   path = /cdrom
   public = yes
   writable = no

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