Include experimental support for using the operating system's asynchronous disk I/O features. This is currently supported only on Linux platforms.
Include support for Unix filesystem access control lists (ACLs). The server must provide a filesystem ACL interface that is supported by Samba. See Chapter 6 for details.
Include support for the automounter, a feature often used in conjunction with NFS, to mount NFS shares automatically at the first attempt to access them. This feature is not actively maintained and may be removed in a future release.
Include support for locating the NIS+ server that is serving a particular user's home directory and telling the client to connect to it. Use --with-automount along with this option. This feature is not actively maintained and may be removed in a future release.
Include integration with filesystem disk-quota support.
Check to see whether the Samba host operating system supports the sendfile( ) system call, which speeds up file transfers by copying data directly to and from kernel buffers, avoiding the overhead of copying to and from buffers in user space. If the operating system has the sendfile( ) system call, support is included in Samba for the use sendfile configuration file option.
Use spin locks instead of the normal method of file locking that uses the fcntl( ) C-library function. Using this option results in a Samba installation that consumes much more CPU time on the host system. Use it only when absolutely necessary.
Include support for syslog error logging. This option must be specified for the Samba configuration file parameters syslog and syslog only to work. This option is widely supported, but might not work correctly on all Samba host systems.
Include Samba's quota abstraction layer when integrating with filesystem quotes. Also refer to the --with-quotas option.
Include support for user accounting in the system's utmp file. This option is necessary for the utmp and utmp directory Samba configuration file options to work. The option is widely supported, but might not work correctly on all Samba host systems.
Build a VFS module for interacting with AFS ACLs rather than using the default POSIX ACL mapping enabled by the --with-acl-support option.