opnsense-src/sys/fs
Rick Macklem 01ae8969a9 nfsd: do not implicitly bind the back channel for NFSv4.1/4.2 mounts
The NFSv4.1 (and 4.2 on 13) server incorrectly binds
a new TCP connection to the back channel when first
used by an RPC with a Sequence op in it (almost all of them).
RFC5661 specifies that only the fore channel should be bound.

This was done because early clients (including FreeBSD)
did not do the required BindConnectionToSession RPC.

Unfortunately, this breaks the Linux client when the
"nconnects" mount option is used, since the server
may do a callback on the incorrect TCP connection.

This patch converts the server behaviour to that
required by the RFC.  It also makes the server test/indicate
failure of the back channel more aggressively.

Until this patch is applied to the server, the
"nconnects" mount option is not recommended for a Linux
NFSv4.1/4.2 client mount to the FreeBSD server.

Reported by:	bcodding@redhat.com
Tested by:	bcodding@redhat.com
PR:		254560
MFC after:	1 week
2021-03-30 14:31:05 -07:00
..
autofs Ensure that dirent's d_off field is initialized 2021-01-03 11:50:31 -05:00
cd9660 Make MAXPHYS tunable. Bump MAXPHYS to 1M. 2020-11-28 12:12:51 +00:00
cuse Fix for loading cuse.ko via rc.d . Make sure we declare the cuse(3) 2020-10-23 08:44:53 +00:00
deadfs vn_open(): If the vnode is reclaimed during open(2), do not return error. 2021-02-12 03:02:20 +02:00
devfs Remove #define _KERNEL hacks from libprocstat 2021-02-21 11:38:21 +02:00
ext2fs ext2fs: clear write cluster tracking on truncation 2021-02-21 11:38:21 +02:00
fdescfs Convert remaining cap_rights_init users to cap_rights_init_one 2021-01-12 13:16:10 +00:00
fifofs fs: clean up empty lines in .c and .h files 2020-09-01 21:18:40 +00:00
fuse fusefs: fix a dead store in fuse_vnop_advlock 2021-03-19 19:38:57 -06:00
mntfs Add a new "mntfs" pseudo file system which provides private device vnodes for 2020-03-06 18:41:37 +00:00
msdosfs Fix makefs bootstrap after d485c77f20 2021-02-22 17:55:45 +00:00
nfs nfsv4 client: fix forced dismount when sleeping on nfsv4lck 2021-03-19 14:09:33 -07:00
nfsclient nfsv4 client: replace while loops with LIST_FOREACH() loops 2021-03-29 14:14:51 -07:00
nfsserver nfsd: do not implicitly bind the back channel for NFSv4.1/4.2 mounts 2021-03-30 14:31:05 -07:00
nullfs null_vput_pair(): release use reference on dvp earlier 2021-03-12 13:31:08 +02:00
procfs Close races in vm object chain traversal for unlock 2021-02-25 12:11:19 -08:00
pseudofs Add sbuf streaming mode to pseudofs(9), use in linprocfs(5) 2020-11-05 06:48:51 +00:00
smbfs Ensure that dirent's d_off field is initialized 2021-01-03 11:50:31 -05:00
tmpfs tmpfs: implement pathconf(_PC_SYMLINK_MAX) 2021-01-29 09:30:25 +00:00
udf Make MAXPHYS tunable. Bump MAXPHYS to 1M. 2020-11-28 12:12:51 +00:00
unionfs Split out cwd/root/jail, cmask state from filedesc table 2020-11-17 21:14:13 +00:00