• Ronnie Sahlberg's avatar
    cifs: return ENAMETOOLONG for overlong names in cifs_open()/cifs_lookup() · d3edede2
    Ronnie Sahlberg authored
    Add checking for the path component length and verify it is <= the maximum
    that the server advertizes via FileFsAttributeInformation.
    
    With this patch cifs.ko will now return ENAMETOOLONG instead of ENOENT
    when users to access an overlong path.
    
    To test this, try to cd into a (non-existing) directory on a CIFS share
    that has a too long name:
    cd /mnt/aaaaaaaaaaaaaaa...
    
    and it now should show a good error message from the shell:
    bash: cd: /mnt/aaaaaaaaaaaaaaaa...aaaaaa: File name too long
    
    rh bz 1153996
    Signed-off-by: default avatarRonnie Sahlberg <lsahlber@redhat.com>
    Signed-off-by: default avatarSteve French <smfrench@gmail.com>
    Cc: <stable@vger.kernel.org>
    d3edede2
dir.c 25 KB