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author | Shirish Pargaonkar <shirishpargaonkar@gmail.com> | 2013-08-29 15:35:09 +0200 |
---|---|---|
committer | Steve French <smfrench@gmail.com> | 2013-09-08 21:47:47 +0200 |
commit | d4e63bd6e40da30e965e8947b98ba75c6b973c62 (patch) | |
tree | 4f17bdbe75843ac578a9a9e1ee491192dd280d73 /fs | |
parent | CIFS: convert to use le32_add_cpu() (diff) | |
download | linux-d4e63bd6e40da30e965e8947b98ba75c6b973c62.tar.xz linux-d4e63bd6e40da30e965e8947b98ba75c6b973c62.zip |
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')
-rw-r--r-- | fs/cifs/connect.c | 27 | ||||
-rw-r--r-- | fs/cifs/misc.c | 1 | ||||
-rw-r--r-- | fs/cifs/sess.c | 40 | ||||
-rw-r--r-- | fs/cifs/smb2pdu.c | 31 |
4 files changed, 70 insertions, 29 deletions
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index b1bab99be83b..688f48ec9abc 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -3828,33 +3828,8 @@ cifs_setup_session(const unsigned int xid, struct cifs_ses *ses, if (server->ops->sess_setup) rc = server->ops->sess_setup(xid, ses, nls_info); - if (rc) { + if (rc) cifs_dbg(VFS, "Send error in SessSetup = %d\n", rc); - } else { - mutex_lock(&server->srv_mutex); - if (!server->session_estab) { - server->session_key.response = ses->auth_key.response; - server->session_key.len = ses->auth_key.len; - server->sequence_number = 0x2; - server->session_estab = true; - ses->auth_key.response = NULL; - if (server->ops->generate_signingkey) - server->ops->generate_signingkey(server); - } - mutex_unlock(&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); - } - - kfree(ses->auth_key.response); - ses->auth_key.response = NULL; - ses->auth_key.len = 0; - kfree(ses->ntlmssp); - ses->ntlmssp = NULL; return rc; } diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c index f7d4b2285efe..82a2b9fb528a 100644 --- a/fs/cifs/misc.c +++ b/fs/cifs/misc.c @@ -105,6 +105,7 @@ sesInfoFree(struct cifs_ses *buf_to_free) } kfree(buf_to_free->user_name); kfree(buf_to_free->domainName); + kfree(buf_to_free->auth_key.response); kfree(buf_to_free); } 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; } diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c index 7d56a5ca2abb..f56cf99e027a 100644 --- a/fs/cifs/smb2pdu.c +++ b/fs/cifs/smb2pdu.c @@ -478,6 +478,13 @@ SMB2_sess_setup(const unsigned int xid, struct cifs_ses *ses, } /* + * If we are here due to reconnect, free per-smb session key + * in case signing was required. + */ + kfree(ses->auth_key.response); + ses->auth_key.response = NULL; + + /* * If memory allocation is successful, caller of this function * frees it. */ @@ -628,6 +635,30 @@ ssetup_exit: /* if ntlmssp, and negotiate succeeded, proceed to authenticate phase */ if ((phase == NtLmChallenge) && (rc == 0)) goto ssetup_ntlmssp_authenticate; + + if (!rc) { + mutex_lock(&server->srv_mutex); + if (!server->session_estab) { + server->sequence_number = 0x2; + server->session_estab = true; + if (server->ops->generate_signingkey) + server->ops->generate_signingkey(server); + } + mutex_unlock(&server->srv_mutex); + + cifs_dbg(FYI, "SMB2/3 session established successfully\n"); + spin_lock(&GlobalMid_Lock); + ses->status = CifsGood; + ses->need_reconnect = false; + spin_unlock(&GlobalMid_Lock); + } + + if (!server->sign) { + kfree(ses->auth_key.response); + ses->auth_key.response = NULL; + } + kfree(ses->ntlmssp); + return rc; } |