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c88f7dcd6d
linux/fs/cifs
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Paulo Alcantara c88f7dcd6d cifs: support nested dfs links over reconnect 
Mounting a dfs link that has nested links was already supported at
mount(2), so make it work over reconnect as well.

Make the following case work:

* mount //root/dfs/link /mnt -o ...
  - final share: /server/share

* in server settings
  - change target folder of /root/dfs/link3 to /server/share2
  - change target folder of /root/dfs/link2 to /root/dfs/link3
  - change target folder of /root/dfs/link to /root/dfs/link2

* mount -o remount,... /mnt
 - refresh all dfs referrals
 - mark current connection for failover
 - cifs_reconnect() reconnects to root server
 - tree_connect()
   * checks that /root/dfs/link2 is a link, then chase it
   * checks that root/dfs/link3 is a link, then chase it
   * finally tree connect to /server/share2

If the mounted share is no longer accessible and a reconnect had been
triggered, the client will retry it from both last referral
path (/root/dfs/link3) and original referral path (/root/dfs/link).

Any new referral paths found while chasing dfs links over reconnect,
it will be updated to TCP_Server_Info::leaf_fullpath, accordingly.

Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Steve French <stfrench@microsoft.com>
2021-11-10 16:30:13 -06:00
..
asn1.c cifs: decoding negTokenInit with generic ASN1 decoder 2021-06-20 21:28:17 -05:00
cache.c cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
cifs_debug.c cifs: nosharesock should not share socket with future sessions 2021-11-07 00:09:37 -05:00
cifs_debug.h cifs: use SPDX-Licence-Identifier 2021-06-20 21:28:17 -05:00
cifs_dfs_ref.c cifs: support nested dfs links over reconnect 2021-11-10 16:30:13 -06:00
cifs_fs_sb.h cifs: support nested dfs links over reconnect 2021-11-10 16:30:13 -06:00
cifs_ioctl.h cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
cifs_spnego_negtokeninit.asn1 cifs: decoding negTokenInit with generic ASN1 decoder 2021-06-20 21:28:17 -05:00
cifs_spnego.c cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
cifs_spnego.h cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
cifs_swn.c cifs: remove support for NTLM and weaker authentication algorithms 2021-08-25 15:47:06 -05:00
cifs_swn.h cifs: simplify SWN code with dummy funcs instead of ifdefs 2021-04-25 16:28:22 -05:00
cifs_unicode.c cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
cifs_unicode.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
cifs_uniupr.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
cifsacl.c cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
cifsacl.h cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
cifsencrypt.c cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
cifsfs.c cifs: Create a new shared file holding smb2 pdu definitions 2021-11-05 09:50:57 -05:00
cifsfs.h cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
cifsglob.h cifs: support nested dfs links over reconnect 2021-11-10 16:30:13 -06:00
cifspdu.h cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
cifsproto.h cifs: support nested dfs links over reconnect 2021-11-10 16:30:13 -06:00
cifsroot.c cifs: Standardize logging output 2020-06-01 00:10:18 -05:00
cifssmb.c cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
connect.c cifs: support nested dfs links over reconnect 2021-11-10 16:30:13 -06:00
dfs_cache.c cifs: support nested dfs links over reconnect 2021-11-10 16:30:13 -06:00
dfs_cache.h cifs: support share failover when remounting 2021-07-22 11:43:23 -05:00
dir.c cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
dns_resolve.c cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
dns_resolve.h cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
export.c cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
file.c smb3: do not error on fsync when readonly 2021-11-10 16:28:27 -06:00
fs_context.c cifs: send workstation name during ntlmssp session setup 2021-11-08 13:07:56 -06:00
fs_context.h cifs: send workstation name during ntlmssp session setup 2021-11-08 13:07:56 -06:00
fscache.c cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
fscache.h cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
inode.c cifs: Deferred close performance improvements 2021-09-17 16:39:53 -05:00
ioctl.c cifs: fix incorrect kernel doc comments 2021-09-13 18:29:46 -05:00
Kconfig cifs: create a MD4 module and switch cifs.ko to use it 2021-08-25 15:48:00 -05:00
link.c cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
Makefile cifs: decoding negTokenInit with generic ASN1 decoder 2021-06-20 21:28:17 -05:00
misc.c cifs: support nested dfs links over reconnect 2021-11-10 16:30:13 -06:00
netlink.c cifs: Constify static struct genl_ops 2021-06-20 21:28:16 -05:00
netlink.h cifs: Register generic netlink family 2020-12-14 09:16:22 -06:00
netmisc.c cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
nterr.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
nterr.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
ntlmssp.h cifs: send workstation name during ntlmssp session setup 2021-11-08 13:07:56 -06:00
readdir.c cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
rfc1002pdu.h cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
sess.c cifs: send workstation name during ntlmssp session setup 2021-11-08 13:07:56 -06:00
smb1ops.c cifs: constify path argument of ->make_node() 2021-04-25 16:28:23 -05:00
smb2file.c cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
smb2glob.h cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
smb2inode.c cifs: for compound requests, use open handle if possible 2021-11-10 11:05:20 -06:00
smb2maperror.c cifs: Create a new shared file holding smb2 pdu definitions 2021-11-05 09:50:57 -05:00
smb2misc.c cifs: Move SMB2_Create definitions to the shared area 2021-11-05 09:55:36 -05:00
smb2ops.c cifs: support nested dfs links over reconnect 2021-11-10 16:30:13 -06:00
smb2pdu.c cifs: support nested dfs links over reconnect 2021-11-10 16:30:13 -06:00
smb2pdu.h cifs: Move SMB2_Create definitions to the shared area 2021-11-05 09:55:36 -05:00
smb2proto.h cifs: Create a new shared file holding smb2 pdu definitions 2021-11-05 09:50:57 -05:00
smb2status.h cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
smb2transport.c cifs: Create a new shared file holding smb2 pdu definitions 2021-11-05 09:50:57 -05:00
smbdirect.c smbdirect: missing rc checks while waiting for rdma events 2021-06-22 12:08:32 -05:00
smbdirect.h cifs: smbd: Do not schedule work to send immediate packet on every receive 2020-04-07 12:41:16 -05:00
smbencrypt.c cifs: rename cifs_common to smbfs_common 2021-09-08 23:59:26 -05:00
smberr.h cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
trace.c smb3: Cleanup license mess 2019-01-24 09:37:33 -06:00
trace.h smb3: add dynamic trace points for socket connection 2021-11-05 16:20:24 -05:00
transport.c cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
unc.c cifs: don't cargo-cult strndup() 2021-04-25 16:28:23 -05:00
winucase.c cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
xattr.c cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00