opnsense-src/sys/fs
Rick Macklem b9410313c6 nfscl/kgssapi: Fix Kerberized NFS mounts to pNFS servers
During recent testing related to the IETF NFSv4 Bakeathon, it was
discovered that Kerberized NFSv4.1/4.2 mounts to pNFS servers
(sec=krb5[ip],pnfs mount options) was broken.
The FreeBSD client was using the "service principal" for
the MDS to try and establish a rpcsec_gss credential for a DS,
which is incorrect. (A "service principal" looks like
"nfs@<fqdn-of-server>" and the <fqdn-of-server> for the DS is not
the same as the MDS for most pNFS servers.)

To fix this, the rpcsec_gss code needs to be able to do a
reverse DNS lookup of the DS's IP address.  A new kgssapi upcall
to the gssd(8) daemon is added by this patch to do the reverse DNS
along with a new rpcsec_gss function to generate the "service
principal".

A separate patch to the gssd(8) will be committed, so that this
patch will fix the problem.  Without the gssd(8) patch, the new
upcall fails and current/incorrect behaviour remains.

This bug only affects the rare case of a Kerberized (sec=krb5[ip],pnfs)
mount using pNFS.

This patch changes the internal KAPI between the kgssapi and
nfscl modules, but since I did a version bump a few days ago,
I will not do one this time.

(cherry picked from commit dd7d42a1fae5a4879b62689a165238082421f343)
2023-12-23 17:03:58 -08:00
..
autofs sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
cd9660 sys: Remove $FreeBSD$: one-line bare tag 2023-08-16 11:55:17 -06:00
cuse sys: Remove $FreeBSD$: one-line .c comment pattern 2023-08-16 11:54:24 -06:00
deadfs sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
devfs devfs: add integrity asserts for cdevp_list 2023-09-27 19:46:38 -05:00
ext2fs Fix build with gcc12. 2023-10-31 08:59:28 -07:00
fdescfs sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
fifofs sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00
fuse vn_copy_file_range(): provide ENOSYS fallback to vn_generic_copy_file_range() 2023-12-05 02:43:27 +02:00
mntfs sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
msdosfs sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
nfs nfscl/kgssapi: Fix Kerberized NFS mounts to pNFS servers 2023-12-23 17:03:58 -08:00
nfsclient nfscl/kgssapi: Fix Kerberized NFS mounts to pNFS servers 2023-12-23 17:03:58 -08:00
nfsserver nfsd: Avoid acquiring a vnode for some NFSv4 Readdir operations 2023-11-16 15:46:17 -08:00
nullfs nullfs: do not allow bypass on copy_file_range() 2023-12-05 02:43:27 +02:00
procfs sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
pseudofs pseudofs: fix off by one in hash iteration in pfs_purge 2023-11-24 17:22:15 +00:00
smbfs sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
tarfs vfs: use __enum_uint8 for vtype and vstate 2023-07-05 15:06:30 +00:00
tmpfs sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
udf sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
unionfs sys: Remove $FreeBSD$: one-line .h pattern 2023-08-16 11:54:18 -06:00