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81.

File Permissions

82.

File Permissions define the explicit rights a computer or user has to a particular directory, file, or set of files. Such permissions may be defined by editing the <filename>/etc/samba/smb.conf</filename> file and specifying the explicit permissions of a defined file share.

83.

For example, for a defined Samba share called <emphasis>share</emphasis> and the need to give <emphasis role="italic">read-only</emphasis> permissions to the group of users known as <emphasis role="italic">qa</emphasis>, while allowing write permissions to the share by the group called <emphasis role="italic">sysadmin</emphasis> and the user named <emphasis role="italic">vincent</emphasis>, then the <filename>/etc/samba/smb.conf</filename> file could be edited to add the following entries under the <emphasis>[share]</emphasis> entry:

84.

read list = @qa
write list = @sysadmin, vincent

85.

Another possible Samba permission is to declare <emphasis>administrative</emphasis> permissions to a particular shared resource. Users having administrative permissions may read, write, or modify any information contained in the resource where the user has been given explicit administrative permissions.

86.

For example, to give the user <emphasis role="italic">melissa</emphasis> administrative permissions to the <emphasis role="italic">share</emphasis> example, the <filename>/etc/samba/smb.conf</filename> file would be edited to add the following line under the <emphasis>[share]</emphasis> entry:

87.

admin users = melissa

88.

After editing <filename>/etc/samba/smb.conf</filename>, restart Samba for the changes to take effect:

89.

For the <emphasis>read list</emphasis> and <emphasis>write list</emphasis> to work the Samba security mode must <emphasis>not</emphasis> be set to <emphasis role="italic">security = share</emphasis>

90.

Now that Samba has been configured to limit which groups have access to the shared directory, the filesystem permissions need to be updated.