Merge branch 'staging-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...

[pandora-kernel.git] / fs / cifs / connect.c

diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 8cf4a63..4bc862a 100644 (file)
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -807,8 +807,7 @@ static int
 cifs_parse_mount_options(char *options, const char *devname,
                         struct smb_vol *vol)
 {
-       char *value;
-       char *data;
+       char *value, *data, *end;
        unsigned int  temp_len, i, j;
        char separator[2];
        short int override_uid = -1;
@@ -851,6 +850,7 @@ cifs_parse_mount_options(char *options, const char *devname,
        if (!options)
                return 1;
 
+       end = options + strlen(options);
        if (strncmp(options, "sep=", 4) == 0) {
                if (options[4] != 0) {
                        separator[0] = options[4];
@@ -916,6 +916,7 @@ cifs_parse_mount_options(char *options, const char *devname,
                        the only illegal character in a password is null */
 
                        if ((value[temp_len] == 0) &&
+                           (value + temp_len < end) &&
                            (value[temp_len+1] == separator[0])) {
                                /* reinsert comma */
                                value[temp_len] = separator[0];
@@ -1854,6 +1855,8 @@ cifs_put_smb_ses(struct cifsSesInfo *ses)
        cifs_put_tcp_session(server);
 }
 
+static bool warned_on_ntlm;  /* globals init to false automatically */
+
 static struct cifsSesInfo *
 cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb_vol *volume_info)
 {
@@ -1928,6 +1931,15 @@ cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb_vol *volume_info)
        }
        ses->cred_uid = volume_info->cred_uid;
        ses->linux_uid = volume_info->linux_uid;
+
+       /* ntlmv2 is much stronger than ntlm security, and has been broadly
+       supported for many years, time to update default security mechanism */
+       if ((volume_info->secFlg == 0) && warned_on_ntlm == false) {
+               warned_on_ntlm = true;
+               cERROR(1, "default security mechanism requested.  The default "
+                       "security mechanism will be upgraded from ntlm to "
+                       "ntlmv2 in kernel release 2.6.41");
+       }
        ses->overrideSecFlg = volume_info->secFlg;
 
        mutex_lock(&ses->session_mutex);