diff mbox series

[RFC,v2,04/15] sunrpc: add rpcauth_map_to_svc_cred_local

Message ID 20240612030752.31754-5-snitzer@kernel.org (mailing list archive)
State New
Headers show
Series nfs/nfsd: add support for localio | expand

Commit Message

Mike Snitzer June 12, 2024, 3:07 a.m. UTC
From: Weston Andros Adamson <dros@primarydata.com>

Add new funtion rpcauth_map_to_svc_cred_local which maps a generic
rpc_cred to an svc_cred suitable for use in nfsd.

This is needed by the localio code to map nfs client creds to nfs
server credentials.

Signed-off-by: Weston Andros Adamson <dros@primarydata.com>
Signed-off-by: Lance Shelton <lance.shelton@hammerspace.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
---
 include/linux/sunrpc/auth.h |  4 ++++
 net/sunrpc/auth.c           | 17 +++++++++++++++++
 2 files changed, 21 insertions(+)

Comments

NeilBrown June 12, 2024, 4:28 a.m. UTC | #1
On Wed, 12 Jun 2024, Mike Snitzer wrote:
> From: Weston Andros Adamson <dros@primarydata.com>
> 
> Add new funtion rpcauth_map_to_svc_cred_local which maps a generic
> rpc_cred to an svc_cred suitable for use in nfsd.

This comment is stale.  There is not such thing as an "rpc_cred".

NeilBrown

> 
> This is needed by the localio code to map nfs client creds to nfs
> server credentials.
> 
> Signed-off-by: Weston Andros Adamson <dros@primarydata.com>
> Signed-off-by: Lance Shelton <lance.shelton@hammerspace.com>
> Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
> Signed-off-by: Mike Snitzer <snitzer@kernel.org>
> ---
>  include/linux/sunrpc/auth.h |  4 ++++
>  net/sunrpc/auth.c           | 17 +++++++++++++++++
>  2 files changed, 21 insertions(+)
> 
> diff --git a/include/linux/sunrpc/auth.h b/include/linux/sunrpc/auth.h
> index 61e58327b1aa..f8b561cf78ab 100644
> --- a/include/linux/sunrpc/auth.h
> +++ b/include/linux/sunrpc/auth.h
> @@ -11,6 +11,7 @@
>  #define _LINUX_SUNRPC_AUTH_H
>  
>  #include <linux/sunrpc/sched.h>
> +#include <linux/sunrpc/svcauth.h>
>  #include <linux/sunrpc/msg_prot.h>
>  #include <linux/sunrpc/xdr.h>
>  
> @@ -184,6 +185,9 @@ int			rpcauth_uptodatecred(struct rpc_task *);
>  int			rpcauth_init_credcache(struct rpc_auth *);
>  void			rpcauth_destroy_credcache(struct rpc_auth *);
>  void			rpcauth_clear_credcache(struct rpc_cred_cache *);
> +bool			rpcauth_map_to_svc_cred_local(struct rpc_auth *,
> +						      const struct cred *,
> +						      struct svc_cred *);
>  char *			rpcauth_stringify_acceptor(struct rpc_cred *);
>  
>  static inline
> diff --git a/net/sunrpc/auth.c b/net/sunrpc/auth.c
> index 04534ea537c8..f75728922d57 100644
> --- a/net/sunrpc/auth.c
> +++ b/net/sunrpc/auth.c
> @@ -308,6 +308,23 @@ rpcauth_init_credcache(struct rpc_auth *auth)
>  }
>  EXPORT_SYMBOL_GPL(rpcauth_init_credcache);
>  
> +bool
> +rpcauth_map_to_svc_cred_local(struct rpc_auth *auth, const struct cred *cred,
> +			      struct svc_cred *svc)
> +{
> +	svc->cr_uid = cred->uid;
> +	svc->cr_gid = cred->gid;
> +	svc->cr_flavor = auth->au_flavor;
> +	if (cred->group_info)
> +		svc->cr_group_info = get_group_info(cred->group_info);
> +	/* These aren't relevant for local (network is bypassed) */
> +	svc->cr_principal = NULL;
> +	svc->cr_gss_mech = NULL;
> +
> +	return true;
> +}
> +EXPORT_SYMBOL_GPL(rpcauth_map_to_svc_cred_local);
> +
>  char *
>  rpcauth_stringify_acceptor(struct rpc_cred *cred)
>  {
> -- 
> 2.44.0
> 
> 
>
Anna Schumaker June 12, 2024, 6:32 p.m. UTC | #2
Hi Mike,

On Tue, Jun 11, 2024 at 11:08 PM Mike Snitzer <snitzer@kernel.org> wrote:
>
> From: Weston Andros Adamson <dros@primarydata.com>
>
> Add new funtion rpcauth_map_to_svc_cred_local which maps a generic
> rpc_cred to an svc_cred suitable for use in nfsd.
>
> This is needed by the localio code to map nfs client creds to nfs
> server credentials.
>
> Signed-off-by: Weston Andros Adamson <dros@primarydata.com>
> Signed-off-by: Lance Shelton <lance.shelton@hammerspace.com>
> Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
> Signed-off-by: Mike Snitzer <snitzer@kernel.org>
> ---
>  include/linux/sunrpc/auth.h |  4 ++++
>  net/sunrpc/auth.c           | 17 +++++++++++++++++
>  2 files changed, 21 insertions(+)
>
> diff --git a/include/linux/sunrpc/auth.h b/include/linux/sunrpc/auth.h
> index 61e58327b1aa..f8b561cf78ab 100644
> --- a/include/linux/sunrpc/auth.h
> +++ b/include/linux/sunrpc/auth.h
> @@ -11,6 +11,7 @@
>  #define _LINUX_SUNRPC_AUTH_H
>
>  #include <linux/sunrpc/sched.h>
> +#include <linux/sunrpc/svcauth.h>
>  #include <linux/sunrpc/msg_prot.h>
>  #include <linux/sunrpc/xdr.h>
>
> @@ -184,6 +185,9 @@ int                 rpcauth_uptodatecred(struct rpc_task *);
>  int                    rpcauth_init_credcache(struct rpc_auth *);
>  void                   rpcauth_destroy_credcache(struct rpc_auth *);
>  void                   rpcauth_clear_credcache(struct rpc_cred_cache *);
> +bool                   rpcauth_map_to_svc_cred_local(struct rpc_auth *,
> +                                                     const struct cred *,
> +                                                     struct svc_cred *);
>  char *                 rpcauth_stringify_acceptor(struct rpc_cred *);
>
>  static inline
> diff --git a/net/sunrpc/auth.c b/net/sunrpc/auth.c
> index 04534ea537c8..f75728922d57 100644
> --- a/net/sunrpc/auth.c
> +++ b/net/sunrpc/auth.c
> @@ -308,6 +308,23 @@ rpcauth_init_credcache(struct rpc_auth *auth)
>  }
>  EXPORT_SYMBOL_GPL(rpcauth_init_credcache);
>
> +bool
> +rpcauth_map_to_svc_cred_local(struct rpc_auth *auth, const struct cred *cred,
> +                             struct svc_cred *svc)
> +{
> +       svc->cr_uid = cred->uid;
> +       svc->cr_gid = cred->gid;
> +       svc->cr_flavor = auth->au_flavor;
> +       if (cred->group_info)
> +               svc->cr_group_info = get_group_info(cred->group_info);
> +       /* These aren't relevant for local (network is bypassed) */
> +       svc->cr_principal = NULL;
> +       svc->cr_gss_mech = NULL;
> +
> +       return true;
> +}

This function doesn't have a way to fail, and only ever returns true.
Could it be a void function instead of bool?

Anna

> +EXPORT_SYMBOL_GPL(rpcauth_map_to_svc_cred_local);
> +
>  char *
>  rpcauth_stringify_acceptor(struct rpc_cred *cred)
>  {
> --
> 2.44.0
>
>
diff mbox series

Patch

diff --git a/include/linux/sunrpc/auth.h b/include/linux/sunrpc/auth.h
index 61e58327b1aa..f8b561cf78ab 100644
--- a/include/linux/sunrpc/auth.h
+++ b/include/linux/sunrpc/auth.h
@@ -11,6 +11,7 @@ 
 #define _LINUX_SUNRPC_AUTH_H
 
 #include <linux/sunrpc/sched.h>
+#include <linux/sunrpc/svcauth.h>
 #include <linux/sunrpc/msg_prot.h>
 #include <linux/sunrpc/xdr.h>
 
@@ -184,6 +185,9 @@  int			rpcauth_uptodatecred(struct rpc_task *);
 int			rpcauth_init_credcache(struct rpc_auth *);
 void			rpcauth_destroy_credcache(struct rpc_auth *);
 void			rpcauth_clear_credcache(struct rpc_cred_cache *);
+bool			rpcauth_map_to_svc_cred_local(struct rpc_auth *,
+						      const struct cred *,
+						      struct svc_cred *);
 char *			rpcauth_stringify_acceptor(struct rpc_cred *);
 
 static inline
diff --git a/net/sunrpc/auth.c b/net/sunrpc/auth.c
index 04534ea537c8..f75728922d57 100644
--- a/net/sunrpc/auth.c
+++ b/net/sunrpc/auth.c
@@ -308,6 +308,23 @@  rpcauth_init_credcache(struct rpc_auth *auth)
 }
 EXPORT_SYMBOL_GPL(rpcauth_init_credcache);
 
+bool
+rpcauth_map_to_svc_cred_local(struct rpc_auth *auth, const struct cred *cred,
+			      struct svc_cred *svc)
+{
+	svc->cr_uid = cred->uid;
+	svc->cr_gid = cred->gid;
+	svc->cr_flavor = auth->au_flavor;
+	if (cred->group_info)
+		svc->cr_group_info = get_group_info(cred->group_info);
+	/* These aren't relevant for local (network is bypassed) */
+	svc->cr_principal = NULL;
+	svc->cr_gss_mech = NULL;
+
+	return true;
+}
+EXPORT_SYMBOL_GPL(rpcauth_map_to_svc_cred_local);
+
 char *
 rpcauth_stringify_acceptor(struct rpc_cred *cred)
 {