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There is no point going all the way back to the original dfs full path
if reconnect of tcon did not finish due a nested link found as newly
resolved target for the current referral. So, just mark current
server for reconnect as we already set @current_fullpath to the new
dfs referral in update_server_fullpath().
Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Steve French <stfrench@microsoft.com>
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Avoid blocking in dfs_cache_noreq_update_tgthint() while reconnecting
servers or tcons as the cache refresh worker or new mounts might
already be updating their targets.
Move some more dfs related code out of connect.c while at it.
Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Steve French <stfrench@microsoft.com>
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We can't rely on cifs_tcon::ses to refresh cached referral as the
server target might not respond to referrals, e.g. share is not hosted
in a DFS root server. Consider the following
mount //dom/dfs/link -> /root1/dfs/link -> /fs0/share
where fs0 can't get a referral for "/root1/dfs/link".
To simplify and fix the access of dfs root sessions, store the dfs
root session pointer directly to new sessions so making it easier to
select the appropriate ipc connection and use it for failover or cache
refresh.
Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Steve French <stfrench@microsoft.com>
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When matching DFS superblocks we can't rely on either the server's
address or tcon's UNC name from mount(2) as the existing servers and
tcons might be connected to somewhere else. Instead, check if
superblock is dfs, and if so, match its original source pathname with
the new mount's source pathname.
For DFS connections, instead of checking server's address, match its
referral path as it could be connected to different targets.
Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Steve French <stfrench@microsoft.com>
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All callers from dns_resolve_server_name_to_ip() used to convert the
ip addr string back to sockaddr, so do that inside
dns_resolve_server_name_to_ip() and avoid duplicating code.
Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Steve French <stfrench@microsoft.com>
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After switching to filesystem context support, we no longer need to
handle mount options string when chasing dfs referrals. Now, we set
the new values directly into smb3_fs_context.
Start working on a separate source file to handle most dfs related
mount functions as connect.c has already became too big. The
remaining functions will be moved gradually in follow-up patches.
Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Steve French <stfrench@microsoft.com>
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