[PATCH] fs: nfsd: fix kconfig dependency warning for NFSD_V4

[PATCH] fs: nfsd: fix kconfig dependency warning for NFSD_V4

[Julian Braha]

When NFSD_V4 is enabled and CRYPTO is disabled,
Kbuild gives the following warning:

WARNING: unmet direct dependencies detected for CRYPTO_SHA256
  Depends on [n]: CRYPTO [=n]
  Selected by [y]:
  - NFSD_V4 [=y] && NETWORK_FILESYSTEMS [=y] && NFSD [=y] && PROC_FS [=y]

WARNING: unmet direct dependencies detected for CRYPTO_MD5
  Depends on [n]: CRYPTO [=n]
  Selected by [y]:
  - NFSD_V4 [=y] && NETWORK_FILESYSTEMS [=y] && NFSD [=y] && PROC_FS [=y]

This is because NFSD_V4 selects CRYPTO_MD5 and CRYPTO_SHA256,
without depending on or selecting CRYPTO, despite those config options
being subordinate to CRYPTO.

Signed-off-by: Julian Braha <julianbraha@gmail.com>
--- a/fs/nfsd/Kconfig 2021-02-09 22:05:29.462030761 -0500
+++ b/fs/nfsd/Kconfig 2021-02-11 12:00:48.974076992 -0500
@@ -73,6 +73,7 @@
   select NFSD_V3
   select FS_POSIX_ACL
   select SUNRPC_GSS
+ select CRYPTO
   select CRYPTO_MD5
   select CRYPTO_SHA256
   select GRACE_PERIOD

Re: [PATCH] nfsd: fix kconfig dependency warning for NFSD_V4

[Chuck Lever]

Hi Julian-

> On Feb 19, 2021, at 4:56 PM, Julian Braha <julianbraha@gmail.com> wrote:
> 
> When NFSD_V4 is enabled and CRYPTO is disabled,
> Kbuild gives the following warning:
> 
> WARNING: unmet direct dependencies detected for CRYPTO_SHA256
>  Depends on [n]: CRYPTO [=n]
>  Selected by [y]:
>  - NFSD_V4 [=y] && NETWORK_FILESYSTEMS [=y] && NFSD [=y] && PROC_FS [=y]
> 
> WARNING: unmet direct dependencies detected for CRYPTO_MD5
>  Depends on [n]: CRYPTO [=n]
>  Selected by [y]:
>  - NFSD_V4 [=y] && NETWORK_FILESYSTEMS [=y] && NFSD [=y] && PROC_FS [=y]
> 
> This is because NFSD_V4 selects CRYPTO_MD5 and CRYPTO_SHA256,
> without depending on or selecting CRYPTO, despite those config options
> being subordinate to CRYPTO.
> 
> Signed-off-by: Julian Braha <julianbraha@gmail.com>

I've included this patch in the for-rc topic branch at:

git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux.git

However, there was some harumphing over on linux-rdma about
a similar change for CRYPTO_CRC32 and the rxe driver. I'm
not quite clear about the outcome of that conversation. It
seems like we are going with either

 - add "select CRYPTO"

or

 - add "depends on CRYPTO"


> --- a/fs/nfsd/Kconfig 2021-02-09 22:05:29.462030761 -0500
> +++ b/fs/nfsd/Kconfig 2021-02-11 12:00:48.974076992 -0500
> @@ -73,6 +73,7 @@
>   select NFSD_V3
>   select FS_POSIX_ACL
>   select SUNRPC_GSS
> + select CRYPTO
>   select CRYPTO_MD5
>   select CRYPTO_SHA256
>   select GRACE_PERIOD
> 
> 

--
Chuck Lever