Re: [PATCH 2/3] cifs: move calc_lanman_hash to smb1ops.c

[kernel test robot <lkp@intel.com>]

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Hi Ronnie,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on cifs/for-next]
[also build test ERROR on v5.14-rc5 next-20210813]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Ronnie-Sahlberg/cifs-only-compile-in-smb1ops-c-if-we-configure-CIFS_ALLOW_INSECURE_LEGACY/20210814-045731
base:   git://git.samba.org/sfrench/cifs-2.6.git for-next
config: hexagon-randconfig-r041-20210814 (attached as .config)
compiler: clang version 12.0.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/0day-ci/linux/commit/2a89ec2d759f8c3c9035498c5ef1bf66a8f8b07b
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Ronnie-Sahlberg/cifs-only-compile-in-smb1ops-c-if-we-configure-CIFS_ALLOW_INSECURE_LEGACY/20210814-045731
        git checkout 2a89ec2d759f8c3c9035498c5ef1bf66a8f8b07b
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=hexagon 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

>> fs/cifs/smb1ops.c:51:26: error: implicitly declaring library function 'toupper' with type 'int (int)' [-Werror,-Wimplicit-function-declaration]
                   password_with_pad[i] = toupper(password_with_pad[i]);
                                          ^
   fs/cifs/smb1ops.c:51:26: note: include the header <ctype.h> or explicitly provide a declaration for 'toupper'
   1 error generated.


vim +51 fs/cifs/smb1ops.c

    16	
    17	#ifdef CONFIG_CIFS_WEAK_PW_HASH
    18	int calc_lanman_hash(const char *password, const char *cryptkey, bool encrypt,
    19				char *lnm_session_key)
    20	{
    21		int i, len;
    22		int rc;
    23		char password_with_pad[CIFS_ENCPWD_SIZE] = {0};
    24	
    25		if (password) {
    26			for (len = 0; len < CIFS_ENCPWD_SIZE; len++)
    27				if (!password[len])
    28					break;
    29	
    30			memcpy(password_with_pad, password, len);
    31		}
    32	
    33		if (!encrypt && global_secflags & CIFSSEC_MAY_PLNTXT) {
    34			memcpy(lnm_session_key, password_with_pad,
    35				CIFS_ENCPWD_SIZE);
    36			return 0;
    37		}
    38	
    39		/* calculate old style session key */
    40		/* calling toupper is less broken than repeatedly
    41		calling nls_toupper would be since that will never
    42		work for UTF8, but neither handles multibyte code pages
    43		but the only alternative would be converting to UCS-16 (Unicode)
    44		(using a routine something like UniStrupr) then
    45		uppercasing and then converting back from Unicode - which
    46		would only worth doing it if we knew it were utf8. Basically
    47		utf8 and other multibyte codepages each need their own strupper
    48		function since a byte at a time will ont work. */
    49	
    50		for (i = 0; i < CIFS_ENCPWD_SIZE; i++)
  > 51			password_with_pad[i] = toupper(password_with_pad[i]);
    52	
    53		rc = SMBencrypt(password_with_pad, cryptkey, lnm_session_key);
    54	
    55		return rc;
    56	}
    57	#endif /* CIFS_WEAK_PW_HASH */
    58	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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