linux-kernel - [PATCH 4.9 052/107] cifs: add missing debug entries for kconfig options

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Date:   Mon,  3 Sep 2018 18:56:16 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Steve French <stfrench@...rosoft.com>,
        Ronnie Sahlberg <lsahlber@...hat.com>,
        Pavel Shilovsky <pshilov@...rosoft.com>,
        Paulo Alcantara <palcantara@...e.de>
Subject: [PATCH 4.9 052/107] cifs: add missing debug entries for kconfig options

4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Steve French <stfrench@...rosoft.com>

commit 950132afd59385caf6e2b84e5235d069fa10681d upstream.

/proc/fs/cifs/DebugData displays the features (Kconfig options)
used to build cifs.ko but it was missing some, and needed comma
separator.  These can be useful in debugging certain problems
so we know which optional features were enabled in the user's build.
Also clarify them, by making them more closely match the
corresponding CONFIG_CIFS_* parm.

Old format:
Features: dfs fscache posix spnego xattr acl

New format:
Features: DFS,FSCACHE,SMB_DIRECT,STATS,DEBUG2,ALLOW_INSECURE_LEGACY,CIFS_POSIX,UPCALL(SPNEGO),XATTR,ACL

Signed-off-by: Steve French <stfrench@...rosoft.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@...hat.com>
Reviewed-by: Pavel Shilovsky <pshilov@...rosoft.com>
Reviewed-by: Paulo Alcantara <palcantara@...e.de>
CC: Stable <stable@...r.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 fs/cifs/cifs_debug.c |   30 +++++++++++++++++++++++-------
 1 file changed, 23 insertions(+), 7 deletions(-)

--- a/fs/cifs/cifs_debug.c
+++ b/fs/cifs/cifs_debug.c
@@ -123,25 +123,41 @@ static int cifs_debug_data_proc_show(str
 	seq_printf(m, "CIFS Version %s\n", CIFS_VERSION);
 	seq_printf(m, "Features:");
 #ifdef CONFIG_CIFS_DFS_UPCALL
-	seq_printf(m, " dfs");
+	seq_printf(m, " DFS");
 #endif
 #ifdef CONFIG_CIFS_FSCACHE
-	seq_printf(m, " fscache");
+	seq_printf(m, ",FSCACHE");
+#endif
+#ifdef CONFIG_CIFS_SMB_DIRECT
+	seq_printf(m, ",SMB_DIRECT");
+#endif
+#ifdef CONFIG_CIFS_STATS2
+	seq_printf(m, ",STATS2");
+#elif defined(CONFIG_CIFS_STATS)
+	seq_printf(m, ",STATS");
+#endif
+#ifdef CONFIG_CIFS_DEBUG2
+	seq_printf(m, ",DEBUG2");
+#elif defined(CONFIG_CIFS_DEBUG)
+	seq_printf(m, ",DEBUG");
+#endif
+#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY
+	seq_printf(m, ",ALLOW_INSECURE_LEGACY");
 #endif
 #ifdef CONFIG_CIFS_WEAK_PW_HASH
-	seq_printf(m, " lanman");
+	seq_printf(m, ",WEAK_PW_HASH");
 #endif
 #ifdef CONFIG_CIFS_POSIX
-	seq_printf(m, " posix");
+	seq_printf(m, ",CIFS_POSIX");
 #endif
 #ifdef CONFIG_CIFS_UPCALL
-	seq_printf(m, " spnego");
+	seq_printf(m, ",UPCALL(SPNEGO)");
 #endif
 #ifdef CONFIG_CIFS_XATTR
-	seq_printf(m, " xattr");
+	seq_printf(m, ",XATTR");
 #endif
 #ifdef CONFIG_CIFS_ACL
-	seq_printf(m, " acl");
+	seq_printf(m, ",ACL");
 #endif
 	seq_putc(m, '\n');
 	seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid);