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cifs: return DFS root session id in DebugData

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commit f446a63080 upstream.

Return the DFS root session id in /proc/fs/cifs/DebugData to make it
easier to track which IPC tcon was used to get new DFS referrals for a
specific connection, and aids in debugging.

A simple output of it would be

  Sessions:
  1) Address: 192.168.1.13 Uses: 1 Capability: 0x300067   Session Status: 1
  Security type: RawNTLMSSP  SessionId: 0xd80000000009
  User: 0 Cred User: 0
  DFS root session id: 0x128006c000035

Signed-off-by: Paulo Alcantara (SUSE) <pc@manguebit.com>
Cc: stable@vger.kernel.org # 6.2
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Paulo Alcantara
2023-03-14 20:32:55 -03:00
committed by Greg Kroah-Hartman
parent 5a89d81c1a
commit dd83d228ef
1 changed files with 5 additions and 0 deletions
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5
fs/cifs/cifs_debug.c
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@@ -419,6 +419,11 @@ skip_rdma:
from_kuid(&init_user_ns, ses->linux_uid), from_kuid(&init_user_ns, ses->linux_uid),
from_kuid(&init_user_ns, ses->cred_uid)); from_kuid(&init_user_ns, ses->cred_uid));
if (ses->dfs_root_ses) {
seq_printf(m, "\n\tDFS root session id: 0x%llx",
ses->dfs_root_ses->Suid);
}
spin_lock(&ses->chan_lock); spin_lock(&ses->chan_lock);
if (CIFS_CHAN_NEEDS_RECONNECT(ses, 0)) if (CIFS_CHAN_NEEDS_RECONNECT(ses, 0))
seq_puts(m, "\tPrimary channel: DISCONNECTED "); seq_puts(m, "\tPrimary channel: DISCONNECTED ");