Here is a smbpasswd -D10 -a guest (guest's UID is 4): -----start------ Netbios name list:- my_netbios_names[0]="MKAPLAN-CLIP2" Trying to load: smbpasswd Attempting to register passdb backend ldapsam Successfully added passdb backend 'ldapsam' Attempting to register passdb backend ldapsam_compat Successfully added passdb backend 'ldapsam_compat' Attempting to register passdb backend smbpasswd Successfully added passdb backend 'smbpasswd' Attempting to register passdb backend tdbsam Successfully added passdb backend 'tdbsam' Attempting to register passdb backend guest Successfully added passdb backend 'guest' Attempting to find an passdb backend to match smbpasswd (smbpasswd) Found pdb backend smbpasswd pdb backend smbpasswd has a valid init Attempting to find an passdb backend to match guest (guest) Found pdb backend guest pdb backend guest has a valid init getsampwnam (smbpasswd): search by name: guest startsmbfilepwent_internal: opening file /etc/private/smbpasswd getsmbfilepwent: returning passwd entry for user admin, uid 1 getsmbfilepwent: returning passwd entry for user a1, uid 18000 getsmbfilepwent: returning passwd entry for user dum_owner, uid 81 getsmbfilepwent: returning passwd entry for user tdbsam, uid 18001 getsmbfilepwent: end of file reached. endsmbfilepwent_internal: closed password file. pdb_set_username: setting username guest, was element 11 -> now SET pdb_set_full_name: setting full name guest, was element 12 -> now SET pdb_set_domain: setting domain MKAPLAN-CLIP2, was pdb_set_user_sid: setting user sid S-1-5-21-505807000-3058679453-2213821969-501 pdb_set_user_sid_from_rid: setting user sid S-1-5-21-505807000-3058679453-2213821969-501 from rid 501 pdb_set_group_sid: setting group sid S-1-5-21-505807000-3058679453-2213821969-514 pdb_set_group_sid_from_rid: setting group sid S-1-5-21-505807000-3058679453-2213821969-514 from rid 514 account_policy_get: maximum password age:-1 account_policy_get: minimum password age:0 startsmbfilepwent_internal: opening file /etc/private/smbpasswd getsmbfilepwent: returning passwd entry for user admin, uid 1 getsmbfilepwent: returning passwd entry for user a1, uid 18000 getsmbfilepwent: returning passwd entry for user dum_owner, uid 81 getsmbfilepwent: returning passwd entry for user tdbsam, uid 18001 getsmbfilepwent: end of file reached. endsmbfilepwent_internal: closed password file. -----end------ And here is a smbpasswd -D 10 -a a1 (UID is 18001): -----start------ Netbios name list:- my_netbios_names[0]="MKAPLAN-CLIP2" Trying to load: smbpasswd Attempting to register passdb backend ldapsam Successfully added passdb backend 'ldapsam' Attempting to register passdb backend ldapsam_compat Successfully added passdb backend 'ldapsam_compat' Attempting to register passdb backend smbpasswd Successfully added passdb backend 'smbpasswd' Attempting to register passdb backend tdbsam Successfully added passdb backend 'tdbsam' Attempting to register passdb backend guest Successfully added passdb backend 'guest' Attempting to find an passdb backend to match smbpasswd (smbpasswd) Found pdb backend smbpasswd pdb backend smbpasswd has a valid init Attempting to find an passdb backend to match guest (guest) Found pdb backend guest pdb backend guest has a valid init getsampwnam (smbpasswd): search by name: a1 startsmbfilepwent_internal: opening file /etc/private/smbpasswd getsmbfilepwent: returning passwd entry for user admin, uid 1 getsmbfilepwent: end of file reached. endsmbfilepwent_internal: closed password file. Finding user a1 Trying _Get_Pwnam(), username as lowercase is a1 Get_Pwnam_internals did find user [a1]! pdb_set_username: setting username a1, was element 11 -> now SET pdb_set_full_name: setting full name , was element 12 -> now SET pdb_set_unix_homedir: setting home dir /local_user_, was NULL element 21 -> now SET pdb_set_domain: setting domain MKAPLAN-CLIP2, was pdb_set_user_sid: setting user sid S-1-5-21-505807000-3058679453-2213821969-37000 element 17 -> now SET pdb_set_user_sid_from_rid: setting user sid S-1-5-21-505807000-3058679453-2213821969-37000 from rid 37000 pdb_set_group_sid: setting group sid S-1-5-21-505807000-3058679453-2213821969-1201 element 18 -> now SET pdb_set_group_sid_from_rid: setting group sid S-1-5-21-505807000-3058679453-2213821969-1201 from rid 1201 Home server: mkaplan-clip2 pdb_set_profile_path: setting profile path \\mkaplan-clip2\a1\profile, was Home server: mkaplan-clip2 pdb_set_homedir: setting home dir \\mkaplan-clip2\a1, was pdb_set_dir_drive: setting dir drive , was NULL pdb_set_logon_script: setting logon script , was pdb_init_sam_new: no RID specified. Generating one via old algorithm pdb_set_user_sid: setting user sid S-1-5-21-505807000-3058679453-2213821969-37000 element 17 -> now SET pdb_set_user_sid_from_rid: setting user sid S-1-5-21-505807000-3058679453-2213821969-37000 from rid 37000 account_policy_get: maximum password age:-1 account_policy_get: minimum password age:0 startsmbfilepwent_internal: opening file /etc/private/smbpasswd getsmbfilepwent: returning passwd entry for user admin, uid 1 getsmbfilepwent: end of file reached. endsmbfilepwent_internal: closed password file. -----end------ So there is some error here which is not propagating up.
Fixed by making sure the pdb_guest module set's the SID instead of using PDB_DEFAULT.
sorry for the same, cleaning up the database to prevent unecessary reopens of bugs.