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authorShirish Pargaonkar <shirishpargaonkar@gmail.com>2013-08-29 08:35:09 -0500
committerSteve French <smfrench@gmail.com>2013-09-08 14:47:47 -0500
commitd4e63bd6e40da30e965e8947b98ba75c6b973c62 (patch)
tree4f17bdbe75843ac578a9a9e1ee491192dd280d73 /fs/cifs/sess.c
parent31f92e9a87553d9d3044fe97b5fe0247e4314773 (diff)
downloadlinux-d4e63bd6e40da30e965e8947b98ba75c6b973c62.tar.bz2
cifs: Process post session setup code in respective dialect functions.
Move the post (successful) session setup code to respective dialect routines. For smb1, session key is per smb connection. For smb2/smb3, session key is per smb session. If client and server do not require signing, free session key for smb1/2/3. If client and server require signing smb1 - Copy (kmemdup) session key for the first session to connection. Free session key of that and subsequent sessions on this connection. smb2 - For every session, keep the session key and free it when the session is being shutdown. smb3 - For every session, generate the smb3 signing key using the session key and then free the session key. There are two unrelated line formatting changes as well. Reviewed-by: Jeff Layton <jlayton@samba.org> Signed-off-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com> Signed-off-by: Steve French <smfrench@gmail.com>
Diffstat (limited to 'fs/cifs/sess.c')
-rw-r--r--fs/cifs/sess.c40
1 files changed, 37 insertions, 3 deletions
diff --git a/fs/cifs/sess.c b/fs/cifs/sess.c
index a0a62db0f575..acea6c4ded47 100644
--- a/fs/cifs/sess.c
+++ b/fs/cifs/sess.c
@@ -629,7 +629,8 @@ CIFS_SessSetup(const unsigned int xid, struct cifs_ses *ses,
type = select_sectype(ses->server, ses->sectype);
cifs_dbg(FYI, "sess setup type %d\n", type);
if (type == Unspecified) {
- cifs_dbg(VFS, "Unable to select appropriate authentication method!");
+ cifs_dbg(VFS,
+ "Unable to select appropriate authentication method!");
return -EINVAL;
}
@@ -815,8 +816,9 @@ ssetup_ntlmssp_authenticate:
ses->auth_key.response = kmemdup(msg->data, msg->sesskey_len,
GFP_KERNEL);
if (!ses->auth_key.response) {
- cifs_dbg(VFS, "Kerberos can't allocate (%u bytes) memory",
- msg->sesskey_len);
+ cifs_dbg(VFS,
+ "Kerberos can't allocate (%u bytes) memory",
+ msg->sesskey_len);
rc = -ENOMEM;
goto ssetup_exit;
}
@@ -1005,5 +1007,37 @@ ssetup_exit:
if ((phase == NtLmChallenge) && (rc == 0))
goto ssetup_ntlmssp_authenticate;
+ if (!rc) {
+ mutex_lock(&ses->server->srv_mutex);
+ if (!ses->server->session_estab) {
+ if (ses->server->sign) {
+ ses->server->session_key.response =
+ kmemdup(ses->auth_key.response,
+ ses->auth_key.len, GFP_KERNEL);
+ if (!ses->server->session_key.response) {
+ rc = -ENOMEM;
+ mutex_unlock(&ses->server->srv_mutex);
+ goto keycp_exit;
+ }
+ ses->server->session_key.len =
+ ses->auth_key.len;
+ }
+ ses->server->sequence_number = 0x2;
+ ses->server->session_estab = true;
+ }
+ mutex_unlock(&ses->server->srv_mutex);
+
+ cifs_dbg(FYI, "CIFS session established successfully\n");
+ spin_lock(&GlobalMid_Lock);
+ ses->status = CifsGood;
+ ses->need_reconnect = false;
+ spin_unlock(&GlobalMid_Lock);
+ }
+
+keycp_exit:
+ kfree(ses->auth_key.response);
+ ses->auth_key.response = NULL;
+ kfree(ses->ntlmssp);
+
return rc;
}