1 Contributor: Jim Doyle <doyle@oec.com>
3 Status: Current but needs updating
5 Subject: Basic DCE/DFS Support for SAMBA 1.9.13
6 =============================================================================
11 Per-instance authentication for DCE/DFS.
13 Missing Functionality in this Implementation:
14 ---------------------------------------------
16 * No automatic refresh of credentials
18 To do so would not be that hard.. One could simply
19 stash the clear-text key in memory, spawn a key management
20 thread to wake up right before credentials expire and
21 refresh the login context.
23 * No UNIX Signals support (SIGCLD, SIGPIPE, SIGHUP, SIGBUS, SIGSEGV)
26 There is no support for signal processing in Samba daemons
27 that need to authenticate with DCE. The explanation for this
28 is that the smbd is linked against thread-safe libraries in
29 order to be able to use DCE authentication mechanisms.
30 Because smbd uses signal() and fork(), it represents the
31 worst case scenario for DCE portability. In order
32 to properly support signals in a forked server environment,
33 some rework of smbd is needed in order to properly
34 construct, shutdown and reconstruct asynchronous signal
35 handling threads and synchronous signal traps across the
36 parent and child. I have not had contiguous time to work
37 on it, I expect it to be a weeks worth of work to cleanly
38 integrate thread-safe signal handing into the code and
39 test it. Until I can get to this task, I will leave it up
40 to someone adventurous enough to engineer it and negotiate
41 with Andrew to integrate the changes into the mainline branch.
43 The lack of full signal support means that you cannot
44 rely upon SIGHUP-ing the parent daemon to refresh
45 the configuration data. Likewise, you cannot take advantage
46 of the builtin SIGBUS/SIGSEGV traps to diagnose failures.
47 You will have to halt Samba in order to make changes
48 and then have them take effect.
50 The SMBD server as it stands is suitable to use if you
51 already have experience with configuring and running
57 HP-UX 9.05 / HP-UX DCE 1.2.1
58 AIX 3.2.5 / AIX DCE/6000 1.3
59 DEC OSF-1 3.0 / DEC DCE 1.3
64 - Uncomment the the appropriate block in the Makefile
65 for the platform you wish to build on.
67 - Samples of Samba server configuration files for our
68 DFS environment are included in samples.dcedfs/
72 Bugs, Suggestions, etc..
73 --------------------------
75 Please post them to the mailing list.
76 That way I will see them and they will become part of
77 the archives so others can share the knowledge.