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mirror of https://git.FreeBSD.org/src.git synced 2024-12-22 11:17:19 +00:00
freebsd/include
Doug Rabson a9148abd9d Implement support for RPCSEC_GSS authentication to both the NFS client
and server. This replaces the RPC implementation of the NFS client and
server with the newer RPC implementation originally developed
(actually ported from the userland sunrpc code) to support the NFS
Lock Manager.  I have tested this code extensively and I believe it is
stable and that performance is at least equal to the legacy RPC
implementation.

The NFS code currently contains support for both the new RPC
implementation and the older legacy implementation inherited from the
original NFS codebase. The default is to use the new implementation -
add the NFS_LEGACYRPC option to fall back to the old code. When I
merge this support back to RELENG_7, I will probably change this so
that users have to 'opt in' to get the new code.

To use RPCSEC_GSS on either client or server, you must build a kernel
which includes the KGSSAPI option and the crypto device. On the
userland side, you must build at least a new libc, mountd, mount_nfs
and gssd. You must install new versions of /etc/rc.d/gssd and
/etc/rc.d/nfsd and add 'gssd_enable=YES' to /etc/rc.conf.

As long as gssd is running, you should be able to mount an NFS
filesystem from a server that requires RPCSEC_GSS authentication. The
mount itself can happen without any kerberos credentials but all
access to the filesystem will be denied unless the accessing user has
a valid ticket file in the standard place (/tmp/krb5cc_<uid>). There
is currently no support for situations where the ticket file is in a
different place, such as when the user logged in via SSH and has
delegated credentials from that login. This restriction is also
present in Solaris and Linux. In theory, we could improve this in
future, possibly using Brooks Davis' implementation of variant
symlinks.

Supporting RPCSEC_GSS on a server is nearly as simple. You must create
service creds for the server in the form 'nfs/<fqdn>@<REALM>' and
install them in /etc/krb5.keytab. The standard heimdal utility ktutil
makes this fairly easy. After the service creds have been created, you
can add a '-sec=krb5' option to /etc/exports and restart both mountd
and nfsd.

The only other difference an administrator should notice is that nfsd
doesn't fork to create service threads any more. In normal operation,
there will be two nfsd processes, one in userland waiting for TCP
connections and one in the kernel handling requests. The latter
process will create as many kthreads as required - these should be
visible via 'top -H'. The code has some support for varying the number
of service threads according to load but initially at least, nfsd uses
a fixed number of threads according to the value supplied to its '-n'
option.

Sponsored by:	Isilon Systems
MFC after:	1 month
2008-11-03 10:38:00 +00:00
..
arpa Fix TELOPT(opt) when opt > TELOPT_TN3270E. 2008-09-13 17:46:50 +00:00
gssapi Add an implementation of the RPCSEC_GSS authentication protocol for RPC. This 2008-08-06 14:02:05 +00:00
protocols Expand dump to allow MAX_INT dump levels. 2008-05-24 05:20:46 +00:00
rpc Implement support for RPCSEC_GSS authentication to both the NFS client 2008-11-03 10:38:00 +00:00
rpcsvc
_ctype.h Back out not human readable optimization in prev. commit which shown 2007-11-01 03:18:02 +00:00
a.out.h
ar.h
assert.h Only protect the prototypes with #ifndef _ASSERT_H_, the standards 2007-12-01 19:28:13 +00:00
bitstring.h
complex.h Implement cproj{,f,l}(). 2008-08-07 15:07:48 +00:00
cpio.h
ctype.h The problem is: currently our single byte ctype(3) functions are broken 2007-10-13 16:28:22 +00:00
db.h
dirent.h Implement fdopendir(3) by splitting __opendir2() into two parts, the upper part 2008-04-16 18:59:36 +00:00
dlfcn.h
elf-hints.h
elf.h Remove some OpenSolaris compatibility stuff now that we're doing it a 2007-11-28 22:09:12 +00:00
err.h
fmtmsg.h
fnmatch.h
fstab.h
fts.h Our fts(3) API, as inherited from 4.4BSD, suffers from integer 2008-01-26 17:09:40 +00:00
ftw.h
getopt.h
glob.h
grp.h
gssapi.h
hesiod.h
histedit.h
ieeefp.h
ifaddrs.h
inttypes.h
iso646.h
kenv.h
langinfo.h
libgen.h
limits.h
link.h
locale.h
Makefile Move getosreldate(3) prototype from the machine generated <osreldate.h> 2008-09-26 19:23:22 +00:00
malloc_np.h
malloc.h
memory.h
monetary.h
mpool.h
mqueue.h
ndbm.h
netconfig.h
netdb.h
nl_types.h
nlist.h
nss.h
nsswitch.h Implementing 'fallback' nsswitch source. 'fallback' source is used 2007-12-12 10:08:03 +00:00
paths.h
printf.h
proc_service.h
pthread_np.h Add cpu affinity APIs to get and set thread's cpu affinity mask, the 2008-03-03 08:28:13 +00:00
pthread.h Make pthread_cleanup_push() and pthread_cleanup_pop() as a pair of macros, 2008-06-09 01:14:10 +00:00
pwd.h
ranlib.h
readpassphrase.h Define the size_t type since readpassphrase(3) requires it in its 2008-05-08 23:57:29 +00:00
regex.h
regexp.h
res_update.h
resolv.h
runetype.h
search.h
setjmp.h
signal.h
spawn.h Remove __restrict keywords from array arguments to make GCC's -std=c99 work. 2008-06-19 07:30:32 +00:00
stab.h
stdbool.h
stddef.h
stdio.h Tag FILE's _bf as being part of the public ABI as well due to the in-tree 2008-05-07 15:12:45 +00:00
stdlib.h Add arc4random_uniform() 2008-07-22 11:40:42 +00:00
string.h Add memrchr(3). 2008-04-10 00:12:44 +00:00
stringlist.h
strings.h Add the ffsll and flsll functions. These are ffs and fls operating 2008-11-03 10:22:19 +00:00
sysexits.h
tar.h
tgmath.h
time.h Add POSIX pthread API pthread_getcpuclockid() to get a thread's cpu 2008-03-22 09:59:20 +00:00
timeconv.h
timers.h
ttyent.h
ulimit.h
unistd.h Move getosreldate(3) prototype from the machine generated <osreldate.h> 2008-09-26 19:23:22 +00:00
utime.h
utmp.h
uuid.h Add missing prototypes for uuid_enc,dec_le,be() functions. 2008-09-15 23:47:19 +00:00
varargs.h
vis.h
wchar.h
wctype.h Back out iswascii change from prev. commit, iswascii was right, 2007-10-14 10:23:54 +00:00
wordexp.h