diff options
author | Jeff Layton <jlayton@redhat.com> | 2010-07-07 04:43:02 +0400 |
---|---|---|
committer | Steve French <sfrench@us.ibm.com> | 2010-08-02 16:40:35 +0400 |
commit | daf5b0b6f3f6d7b15c2600426cc6c60a0e155218 (patch) | |
tree | 9c6210671c489d493f02dd7ca1eb6799c21fd195 | |
parent | 4515148ef72bfda4ce3c8754149711d9972867ce (diff) | |
download | linux-daf5b0b6f3f6d7b15c2600426cc6c60a0e155218.tar.xz |
cifs: match secType when searching for existing tcp session
The secType is a per-tcp session entity, but the current routine doesn't
verify that it is acceptible when attempting to match an existing TCP
session.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
-rw-r--r-- | fs/cifs/cifsglob.h | 3 | ||||
-rw-r--r-- | fs/cifs/connect.c | 55 |
2 files changed, 54 insertions, 4 deletions
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h index 06b48998db94..8fb1d10b8742 100644 --- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -83,8 +83,7 @@ enum statusEnum { }; enum securityEnum { - PLAINTXT = 0, /* Legacy with Plaintext passwords */ - LANMAN, /* Legacy LANMAN auth */ + LANMAN = 0, /* Legacy LANMAN auth */ NTLM, /* Legacy NTLM012 auth with NTLM hash */ NTLMv2, /* Legacy NTLM auth with NTLMv2 hash */ RawNTLMSSP, /* NTLMSSP without SPNEGO, NTLMv2 hash */ diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 65e760b9428f..b24e4cea4e3c 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -1412,8 +1412,56 @@ match_address(struct TCP_Server_Info *server, struct sockaddr *addr) return true; } +static bool +match_security(struct TCP_Server_Info *server, struct smb_vol *vol) +{ + unsigned int secFlags; + + if (vol->secFlg & (~(CIFSSEC_MUST_SIGN | CIFSSEC_MUST_SEAL))) + secFlags = vol->secFlg; + else + secFlags = global_secflags | vol->secFlg; + + switch (server->secType) { + case LANMAN: + if (!(secFlags & (CIFSSEC_MAY_LANMAN|CIFSSEC_MAY_PLNTXT))) + return false; + break; + case NTLMv2: + if (!(secFlags & CIFSSEC_MAY_NTLMV2)) + return false; + break; + case NTLM: + if (!(secFlags & CIFSSEC_MAY_NTLM)) + return false; + break; + case Kerberos: + if (!(secFlags & CIFSSEC_MAY_KRB5)) + return false; + break; + case RawNTLMSSP: + if (!(secFlags & CIFSSEC_MAY_NTLMSSP)) + return false; + break; + default: + /* shouldn't happen */ + return false; + } + + /* now check if signing mode is acceptible */ + if ((secFlags & CIFSSEC_MAY_SIGN) == 0 && + (server->secMode & SECMODE_SIGN_REQUIRED)) + return false; + else if (((secFlags & CIFSSEC_MUST_SIGN) == CIFSSEC_MUST_SIGN) && + (server->secMode & + (SECMODE_SIGN_ENABLED|SECMODE_SIGN_REQUIRED)) == 0) + return false; + + return true; +} + static struct TCP_Server_Info * -cifs_find_tcp_session(struct sockaddr *addr) +cifs_find_tcp_session(struct sockaddr *addr, struct smb_vol *vol) { struct TCP_Server_Info *server; @@ -1431,6 +1479,9 @@ cifs_find_tcp_session(struct sockaddr *addr) if (!match_address(server, addr)) continue; + if (!match_security(server, vol)) + continue; + ++server->srv_count; write_unlock(&cifs_tcp_ses_lock); cFYI(1, "Existing tcp session with server found"); @@ -1501,7 +1552,7 @@ cifs_get_tcp_session(struct smb_vol *volume_info) } /* see if we already have a matching tcp_ses */ - tcp_ses = cifs_find_tcp_session((struct sockaddr *)&addr); + tcp_ses = cifs_find_tcp_session((struct sockaddr *)&addr, volume_info); if (tcp_ses) return tcp_ses; |