On Wed, 1 Dec 2010 09:03:32 -0600
Shirish Pargaonkar <[email protected]> wrote:

> On Wed, Dec 1, 2010 at 8:49 AM, Jeff Layton <[email protected]> wrote:
> > A number of places that deal with RFC1001/1002 negotiations have bare
> > "15" or "16" values. Replace them with RFC_1001_NAME_LEN and
> > RFC_1001_NAME_LEN_WITH_NULL.
> >
> > The patch also cleans up some checkpatch warnings for code surrounding
> > the changes. This should apply cleanly on top of the patch to remove
> > Local_System_Name.
> >
> > Reported-by: Shirish Pargaonkar <[email protected]>
> > Signed-off-by: Jeff Layton <[email protected]>
> > ---
> >  fs/cifs/connect.c |   37 +++++++++++++++++++------------------
> >  1 files changed, 19 insertions(+), 18 deletions(-)
> >
> > diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
> > index 5d48e09..a96324b 100644
> > --- a/fs/cifs/connect.c
> > +++ b/fs/cifs/connect.c
> > @@ -64,8 +64,8 @@ struct smb_vol {
> >        char *UNC;
> >        char *UNCip;
> >        char *iocharset;  /* local code page for mapping to and from Unicode 
> > */
> > -       char source_rfc1001_name[16]; /* netbios name of client */
> > -       char target_rfc1001_name[16]; /* netbios name of server for 
> > Win9x/ME */
> > +       char source_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* clnt nb 
> > name */
> > +       char target_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* srvr nb 
> > name */
> >        uid_t cred_uid;
> >        uid_t linux_uid;
> >        gid_t linux_gid;
> > @@ -816,11 +816,11 @@ cifs_parse_mount_options(char *options, const char 
> > *devname,
> >         * informational, only used for servers that do not support
> >         * port 445 and it can be overridden at mount time
> >         */
> > -       memset(vol->source_rfc1001_name, 0x20, 15);
> > -       for (i = 0; i < strnlen(nodename, 15); i++)
> > +       memset(vol->source_rfc1001_name, 0x20, RFC1001_NAME_LEN);
> > +       for (i = 0; i < strnlen(nodename, RFC1001_NAME_LEN); i++)
> >                vol->source_rfc1001_name[i] = toupper(nodename[i]);
> >
> > -       vol->source_rfc1001_name[15] = 0;
> > +       vol->source_rfc1001_name[RFC1001_NAME_LEN] = 0;
> >        /* null target name indicates to use *SMBSERVR default called name
> >           if we end up sending RFC1001 session initialize */
> >        vol->target_rfc1001_name[0] = 0;
> > @@ -1165,22 +1165,22 @@ cifs_parse_mount_options(char *options, const char 
> > *devname,
> >                        if (!value || !*value || (*value == ' ')) {
> >                                cFYI(1, "invalid (empty) netbiosname");
> >                        } else {
> > -                               memset(vol->source_rfc1001_name, 0x20, 15);
> > -                               for (i = 0; i < 15; i++) {
> > -                               /* BB are there cases in which a comma can 
> > be
> > -                               valid in this workstation netbios name (and 
> > need
> > -                               special handling)? */
> > -
> > -                               /* We do not uppercase netbiosname for user 
> > */
> > +                               memset(vol->source_rfc1001_name, 0x20,
> > +                                       RFC1001_NAME_LEN);
> > +                               /*
> > +                                * FIXME: are there cases in which a comma 
> > can
> > +                                * be valid in workstation netbios name (and
> > +                                * need special handling)?
> > +                                */
> > +                               for (i = 0; i < RFC1001_NAME_LEN; i++) {
> > +                                       /* don't ucase netbiosname for user 
> > */
> >                                        if (value[i] == 0)
> >                                                break;
> > -                                       else
> > -                                               vol->source_rfc1001_name[i] 
> > =
> > -                                                               value[i];
> > +                                       vol->source_rfc1001_name[i] = 
> > value[i];
> >                                }
> >                                /* The string has 16th byte zero still from
> >                                set at top of the function  */
> > -                               if ((i == 15) && (value[i] != 0))
> > +                               if (i == RFC1001_NAME_LEN && value[i] != 0)
> >                                        printk(KERN_WARNING "CIFS: 
> > netbiosname"
> >                                                " longer than 15 
> > truncated.\n");
> >                        }
> > @@ -1190,7 +1190,8 @@ cifs_parse_mount_options(char *options, const char 
> > *devname,
> >                                cFYI(1, "empty server netbiosname 
> > specified");
> >                        } else {
> >                                /* last byte, type, is 0x20 for servr type */
> > -                               memset(vol->target_rfc1001_name, 0x20, 16);
> > +                               memset(vol->target_rfc1001_name, 0x20,
> > +                                       RFC1001_NAME_LEN_WITH_NULL);
> >
> >                                for (i = 0; i < 15; i++) {
> >                                /* BB are there cases in which a comma can be
> > @@ -1207,7 +1208,7 @@ cifs_parse_mount_options(char *options, const char 
> > *devname,
> >                                }
> >                                /* The string has 16th byte zero still from
> >                                   set at top of the function  */
> > -                               if ((i == 15) && (value[i] != 0))
> > +                               if (i == RFC1001_NAME_LEN && value[i] != 0)
> >                                        printk(KERN_WARNING "CIFS: server 
> > net"
> >                                        "biosname longer than 15 
> > truncated.\n");
> >                        }
> > --
> > 1.7.3.2
> >
> >
> 
> Jeff, I do not see where RFC1001_NAME_LEN_WITH_NULL and RFC1000_NAME_LEN
> are defined.

In cifsglob.h...

There's a tool for this sort of thing called "cscope":

    http://cscope.sourceforge.net/

Cheers,
-- 
Jeff Layton <[email protected]>
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