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smb3: display volume serial number for shares in /proc/fs/cifs/DebugData

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It can be helpful for debugging.  According to MS-FSCC:

"A 32-bit unsigned integer that contains the serial number of the
volume. The serial number is an opaque value generated by the file
system at format time"

Signed-off-by: Steve French <stfrench@microsoft.com>
Acked-by: Pavel Shilovsky <pshilov@microsoft.com>
This commit is contained in:
Steve French 2019-03-12 01:29:03 -05:00
parent 257b78099b
commit ab7b10cf4f
1 changed files with 3 additions and 0 deletions
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3
fs/cifs/cifs_debug.c
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@ -115,6 +115,9 @@ static void cifs_debug_tcon(struct seq_file *m, struct cifs_tcon *tcon)
seq_puts(m, " type: CDROM ");
else
seq_printf(m, " type: %d ", dev_type);
seq_printf(m, "Serial Number: 0x%x", tcon->vol_serial_number);
if ((tcon->seal) ||
(tcon->ses->session_flags & SMB2_SESSION_FLAG_ENCRYPT_DATA) ||
(tcon->share_flags & SHI1005_FLAGS_ENCRYPT_DATA))